HomeMy WebLinkAbout2015-122 I RESOLUTION NO. 2015-122
2 RESOLUTION OF THE MAYOR AND COMMON COUNCIL OF THE CITY
OF SAN BERNARDINO ADOPTING THE MITIGATED NEGATIVE
3 DECLARATION AND APPROVING THE MITIGATION MONITORING AND
4 REPORTING PROGRAM (MMRP) FOR THE TWIN CREEK ORANGE SHOW
ROAD STORM DRAIN PROJECT (PW PROJECT NO. 15-001).
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BE IT RESOLVED BY THE MAYOR AND COMMON COUNCIL OF THE
6 CITY OF SAN BERNARDINO AS FOLLOWS:
7 SECTION 1. The Mitigated Negative Declaration for the Twin Creek Orange Show
8 Road Storm Drain Project (PWP No. 15-001), as described in the Initial Study attached and
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incorporated herein as Exhibit"A", is hereby adopted.
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11 SECTION 2. The Mitigation Monitoring and Reporting Program (MMRP) for said
12 Project, attached and incorporated herein as Exhibit`B", is hereby approved.
13 SECTION 3. The Director of Community Development, or his designee, is hereby
14 authorized and directed to file a Notice of Determination for said Project with the Clerk of the
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Board of Supervisors of San Bernardino County.
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1 RESOLUTION OF THE MAYOR AND COMMON COUNCIL OF THE CITY OF
SAN BERNARDINO ADOPTING THE MITIGATED NEGATIVE DECLARATION
2 AND APPROVING THE MITIGATION MONITORING AND REPORTING
PROGRAM (MMRP) FOR THE TWIN CREEK ORANGE SHOW ROAD STORM
3 DRAIN PROJECT (PW PROJECT NO. 15-001).
4 I HEREBY CERTIFY that the foregoing Resolution was duly adopted by the Mayor and
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Common Council of the City of San Bernardino at a joint regular meeting thereof, held on the
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7 15th day of June, 2015, by the following vote, to wit:
8 Council Members: AYES NAYS ABSTAIN ABSENT
9 MARQUEZ x
10
BARRIOS x
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12 VALDIVIA x
13 SHORETT x
14 NICKEL x
15 JOHNSON x
16 MULVIHILL x
17 w ��
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19 Georgeang Hanna, CAC, City Clerk
20 The foregoing resolution is hereby approved this /'� day of June, 15.
21 f�f �
22 R. CAREY/Y)AVIS, Mayor
23 City of San Bernardino
Approved as to form:
24 GARY D. SAENZ,
25 City Attorney
26 By: s
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2015-122
EXHIBIT "A"
CITY OF SAN BERNARDINO
PLANNING DIVISION
INITIAL STUDY
CITY OF SAN BERNARDINO
INITIAL STUDY
TWIN CREEK ORANGE SHOW ROAD STORM DRAIN PROJECT
Project Description and Location:
The proposed Twin Creek Orange Show Road Storm Drain Project is located within the City's right-of-way for
Orange Show Road from Twin Creek west to Lena Road,and in Lena Road' 575 feet north of Norman Road, a
distance of approximately 1.0 mile. The entire flood control improvement project is within the City of San
Bernardino,San Bernardino County,California.
This is a public works improvement project that does not require any discretionary land use approvals and does
not seek to change any existing General Plan land use or zoning designations. Construction of all the
improvements may be completed in several phases over several years, depending on the availability of funding
and the pace of industrial development in this portion of the City. Excavation depths will range from 15 to 30
feet but will mainly be at a depth of 25 feet within the existing roads rights-of-way and traffic along Orange
Show Road or Lena Road may be temporarily diverted depending on the timing of construction.The land uses
adjacent to the project alignment are mainly industrial with some commercial on the west end and scattered
residences(approx. 16 units)along Orange Show Road and Lena Road.
April 2015
PREPARED BY:
LSA Associates,Inc.
1500 Iowa Avenue,Suite 200
Riverside,California 92507
(951)781-9310
LSA Project Number THE 1401
PREPARED FOR:
City of San Bernardino
Community Development Department
Planning Division
and
Hillwood Investment Properties
901 Via Piemonte,Suite 175
Ontario,CA 91764
Also shown as South Valley View Avenue on some area maps
Twin Creek Orange Show Road Storm Drain Project 1
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PLANNING DIVISION
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REVIEWED BY:
Independently reviewed, analyzed, and exercised judgment in in k' ig t e determination, by the City of San
Bernardino Development/Environmental Review Committee on 3 2 pursuant to Section 21082 of the
California Environmental Quality Act(CEQA).
The California Environmental Quality Act(CEQA)requires the preparation of an Initial Study when a proposal
must obtain discretionary approval from a governmental agency and is not exempt from CEQA.The purpose of
the Initial Study is to determine whether or not a proposal, not exempt from CEQA, qualifies for a Negative
Declaration or if an Environmental Impact Report(EIR)must be prepared.
I. Project Title: Twin Creek Orange Show Road Storm Drain Project
2. Lead Agency: City of San Bernardino
300 North"D" Street,San Bernardino,California 92418
3. Contact Person: Aron Leung,City of San Bernardino Planning Division
(909)384-5057 x3330
4. Project Location (Address/Nearest cross-streets): The proposed project is located within Orange Show
Road from the Twin Creek Flood Control Channel east to Lena Road',and in Lena Road north to 575 feet
north of Norman Road in the City of San Bernardino,California.
5. Project Sponsor: Mr.Ned Sciortino
6. Address: Hillwood Investment Properties,901 Via Piemonte,Suite 175,Ontario,CA 91764
7. General Plan/Zoning Designations: The Twin Creek channel is designated Public—Flood Control(PFC),
while both Orange Show Road and Lena Road are public streets and have no land use or zoning
designations. All of the land adjacent to the project area is designated Industrial (I) in the General Plan and
zoned Light Industrial (IL) except for along both sides of Waterman Avenue which are zoned Office-
Industrial Park (OIP) with a small area at the northwest corner of Waterman Avenue and Orange Show
Road designated General Commercial(GC-1)(City Website accessed December 2014 with City zoning map
dated February 2007).
8. Description of Project(Describe the whole action involved,including, but not limited to,later phases
of the project and any secondary,support,or off-site feature necessary for its implementation. Attach
additional sheets,if necessary):
The Twin Creek Orange Show Road Storm Drain project is located in the City of San Bernardino,County of
San Bernardino,California.The project limits are bound by Twin Creek on the western downstream end and
approximately 575 feet north of Norman Road within Lena Road on the eastern upstream end. Twin Creek
has its confluence with the Santa Ana River 3,500 feet(0.66 mile)south of this project.The project location
is shown in Figures 1 and 3,while the outfall structure and typical trench section are shown in Figures 2 and
4. In addition, an aerial photo of surrounding land uses is provided in Figure 5, and photographs of the
project alignment are provided in Figure 6.
The City operates the drainage system infrastructure within its boundaries. The Twin Creek Orange Show
Road storm drain system was originally constructed in 2002. The existing system is a 36" reinforced
Also shown as South Valley View Avenue on some area maps
Twin Creek Orange Show Road Storm Drain Project 2
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concrete pipe(RCP)which discharges 92 cubic feet per second(cfs)into Twin Creek,although it is unclear
what storm event this flow rate represents.The upstream end of the existing 36-inch drain line is just east of
the railroad crossing near Amos Avenue,approximately 1,100 feet east of the Twin Creek channel.
The City is proposing to replace the existing storm drain to increase capacity and serve the design flow of
the proposed developments in the area.The design flow for this project is the 100 year storm event and the
ultimate downstream design flow for this project is 1,275.9 cfs. This proposed system will consist of
reinforced concrete box (RCB) and RCP components. The proposed system will allow for a discharge of
1,276 cfs into Twin Creek.The proposed project is the expansion of the storm drain system in Orange Show
Road to increase capacity. The existing storm drain currently located in the Orange Show Road roadway
will be replaced with a 12' x 9' RCB storm drain and a new outfall structure will be located at the same
location as the existing structure in Twin Creek. A concrete headwall and wing walls and grouted rip rap
pad will be installed at the outfall structure to prevent channel erosion caused by high velocity flows (the
expected velocity at the downstream end of the outlet structure is approximately 5.3 feet per second).
The existing 36" RCP and outfall structure (5' by 13') will be replaced with a 12' by 9' RCB. A concrete
headwall and wing walls will be constructed per Caltrans standard plan D-84. The total length of these
structures will be 67 feet on the southern side of the KCB and 59 feet on the northern side of the RCB.
The total area within the channel that will be disturbed is approximately 0.28 acre. The western opening of
the outfall structure(the space between the 2 wing walls)will be 50 feet wide.An additional 69 feet on the
northern side and 95 feet on the southern side will be a graded slope to join the rip rap.The western opening
at the end of the rip rap will be 87 feet wide(this is between the end of the wing walls and where the work
joins the channel at the cut off wall). The wing walls will have return walls prior to the graded slope. The
return walls will be 16 feet on the northern side and 18 feet on the southern side. A 0.21 acre, 4-foot deep
grouted rip rap pad will be placed at the outfall structure in order to prevent streambed erosion. It will
consist of half-ton rip rap within the headwall/wing wall structure and quarter-ton rip rap outside of the
structure (1,355 cubic yards total for the structure). Additionally, 0.05 acre will be graded to allow for
positive drainage into the existing channel topography(see Figure 2).
The project will continue headed easterly in Orange Show Road approximately 2,045 lineal feet with a 144"
x 108"RCB,then 18 lineal feet of 144"x 96"RCB,then 488 lineal feet of 102"RCP,then 1,515 lineal feet
of 108" RCP. At this point the system turns heading north in Lena Road approximately 510 lineal feet of
102"RCP,then 575 lineal feet of 90"RCP.At this point,the proposed storm drain will join the existing 90"
RCP. In the existing condition, the 90"RCP in Lena Road discharges into existing detention basins located
at the northwest corner of Lena Road and Norman Road.Once all downstream construction is complete,the
connection to these basins will be removed(see Figure 3 and Table A for a summary of pipe reaches).
Twin Creek Orange Show Road Storm Drain Project 3
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Table A: Pipe Reach Characteristics
1.Twin Creek to Waterman 2045 144 x 108 24 16 56 784 *59,381
2.Waterman Crossing 18 144 x 96 27 16 62 961 641
3.Waterman to 488 feet west 488 120 26 14 63 848 15,327
of Waterman
4.488 feet west of Waterman 1515 108 26.5 13 58 850.75 47,737
to Lena Road
5.Orange Show to Norman 510 102 28.5 13 62 965.5 18,067
6.Norman to Existing Storm 575 90 15.5 12 35 310.5 6,613
Drain
Source:Thienes Engineering,December 2014(see figures 3 and 4)
'maximum
2 based on a 4-foot vertical 1:1 slope
3 area to be excavated
The project will be constructed in several phases based on available funds,but it is estimated that work will
begin at the downstream end and work upstream. Excavation, construction, and backfilling activities will
disturb a maximum of 1-2 acres per day,assuming a work area approximately 100 feet wide by 500 to 1,000
feet in length at most per day. If all the work were to be done at one time, construction would require
approximately 4 months to complete. Excavation depths will range from 15 to 30 feet but will mainly be at a
depth of 25 feet(see Figure 4 for a't'ypical Trench Section).Traffic control,mainly on Orange Show Road,
will be needed during construction in that roadway. The area adjacent to the project alignment is mainly
industrial with some commercial on the west end and scattered residences(approx. 16 units) along Orange
Show Road and Lena Road that represent the closest sensitive receptors to the proposed project. Table B
describes surrounding land uses and land use designations.
9. Surrounding Land Uses and Setting:
Table B—General Plan Designations and Land Uses
L.oca#ou L,and'1Jse IWIlgnatiMoci. Laud Uses
On site Public Flood Control Flood Control Channel and two public roadways
(channel)and no
designations for roadways
North Industrial and General Scattered residential and industrial uses
Commercial at Waterman
South Industrial and General Land along south side of Orange Show Road is largely vacant with
Commercial at Waterman scattered industrial businesses.
East Industrial More developed industrial land uses east of Lena Road and north of
Orange Show Road
West Industrial and General More developed commercial uses west of Twin Creek Channel.
Commercial
Twin Creek Orange Show Road Storm Drain Project 4
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The project alignment itself consists of the Twin Creek Flood Control Channel and two public roadways,
Orange Show Road and Lena Road. The two roads have no official land use or zoning designations,
although the drainage channel is zoned Public Flood Control(PFC).Much of the land adjacent to the project
alignment is designated for Industrial (I)land uses and zoned Light Industrial(IL)with the exception of the
intersection of Orange Show Road and Waterman Avenue which is designated General Commercial(GC-1)
and zoned Office-Industrial Park (OIP). Once the flood improvements have been made, no adjacent land
uses will be impacted by the project and few of the improvements will be generally visible to the public
(i.e.,most will be within public roadways).
10. Other agencies whose approval is required (e.g., permits, finance approval, or participation
agreement):
• City of San Bernardino Approval of Improvement Plans;
• Approval of Grading and Building Permits;
• Santa Ana Regional Water Quality Control Board,Clean Water Act(CWA)Section 401 Certification;
• California Department of Fish and Wildlife,Streambed Alteration Agreement;
• U.S. Army Corps of Engineers, CWA Section 404 Authorization,Nationwide Permit 43 —Stormwater
Management Facilities;and
• National Pollutant Discharge Elimination System (NPDES) Construction General Permit, Notice of
Intent.
Twin Creek Orange Show Road Storm Drain Project 5
2015-122
ry
Project Location
Vicinity Map
Figure 1
2015-122
OUTFALL STRUCTRUE
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1 1002.75FS (1 1002.51FSj.._
W. ORANO E SHOW ROAD
PROPOSED 101�ON GROUTED
RETURN WALLS I IRIP RAP
_ 2 TON_ GROUTED EXISTING_
I RIP RAP 36 RCP
1 EARTHEN (983. (1000.14NG)
1 HANNEL i =, ' x
PROPOSED
POSED
a^
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H WALL AND
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(1000.17 NG)
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( (982.44NG) (983.41 NG) (984.8 ; ''
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2015-122
CITY OF SAN BERNARDINO
PLANNING DIVISION
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Figure 6: Site Photographs
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A. Looking east at east bank of Twin Creek Channel(i.e.,far western end of project alignment)
{
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B. Looking east along Orange Show Road just east of Waterman Avenue
Twin Creek Orange Show Road Storm Drain Project
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Mauve 6. Site Piwtosraahs tcont'di
C. Looking east along Orange Show Road just west of Lena Road
ows
D. Looking north along Lena Road north of Orange Show Road
I'win Creek Orange Show Road Storm Drain Project 12
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ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED
The environmental factors checked below would be potentially affected by this project, involving at least one
impact that is a"Potentially Significant Impact"as indicated by the checklist on the following pages.
❑ Aesthetics ❑ Agriculture Resources ❑ Air Quality
❑ Biological Resources ❑ Cultural Resources ❑ Geology/Soils
❑ Hazards&Hazardous ❑ Hydrology/Water Quality ❑ Land Use/Planning
Materials ❑ Noise ❑ Population/Housing
❑ Mineral Resources ❑ Recreation ❑ Transportation/Circulation
❑ Public Services ❑ Mandatory Findings of
Significance
Determination
On the basis of this Initial Study,the City of San Bernardino,Environmental Review Committee finds:
That the proposed project COULD NOT have significant effect on the environment, and a ❑
NEGATIVE DECLARATION will be prepared.
That although the proposed project could have a significant effect on the environment,there
will not be a significant effect in this case because the mitigation measures described on an
attached sheet have been added to the project. A MITIGATED NEGATIVE
DECLARATION will be prepared.
That the proposed project MAY have a significant effect on the environment, and an ❑
ENVIRONMENTAL IMPACT REPORT is required.
That although the proposed project could have a significant effect on the environment,there ❑
WILL NOT be a significant effect in this case because all potentially significant effects(a)
have been analyzed adequately in an earlier EIR pursuant to applicable standards, and (b)
have been avoided or mitigated pursuant to that earlier EIR,including revisions or mitigation
measures that are imposed upon the proposed project.
Signature Dail
6 ,
Printed Name
Twin Creek Orange Show Road Storm Drain Project 13
2015-122
CITY OF SAN BERNARDINO
PLANNING DIVISION
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Potentially Less Than Significant Less Than
I. AESTHETICS—Would the project: Significant with Mitigation Significant No
Impact Incorporated Impact Impact
a) Have a substantial adverse effect on a ❑ ❑ ❑
scenic vista as identified in the City's
General Plan?
b) Substantially damage scenic resources, ❑ ❑ ❑
including but not limited to trees, rock
outcroppings, and historic buildings
within a state highway?
c) Substantially degrade the existing visual ❑ ❑ ® ❑
character of the site and its surroundings?
d) Create a new source of substantial light or ❑ ❑ ❑
glare, which would adversely affect
daytime or nighttime views of the area?
Discussion
La No Impact. The proposed project would result in the temporary excavation of approximately a mile of
public streets plus a small area of the east bank of the Twin Creek flood control channel adjacent to the
Orange Show Road bridge.The City's General Plan Natural Resources and Conservation Element(City
of San Bernardino,2005) identifies the Kendall Hills, San Bernardino Mountains, the hillsides adjacent
to Arrowhead Springs, Lytle Creek Wash. East "Twin Creeks Wash, the Santa Ana River, Badger
Canyon, Bailey Canyon, and Waterman Canyon as distinctive vistas. During construction,views along
portions of Orange Show Road and Lena Road will include construction equipment,earth mounds, etc.
These temporary activities are not expected to impact any scenic vistas. After completion, no project
improvements will be visible to area residents or travelers and will not affect views onto or out of the
project area. Therefore, the proposed project will not cause long-term adverse impacts on any scenic
vistas and no mitigation is required.
Lb No Impact. The project site or alignment consists of the Twin Creek flood control channel and
approximately one mile of two public roadways. The project area is relatively flat and only the Twin
Creek channel contains any native vegetation. There are no scenic resources or historic buildings
located within the alignment.The project alignment is not located along a state scenic highway.' Public
views of the San Bernardino Mountains from Interstate 10(I-10)and Interstate 215 (I-215)would not be
affected as these freeways are located out of the project area (1.14 miles south and 0.75 mile west,
respectively). The project would not significantly hinder views from the site or adjacent properties. For
these reasons,no impacts associated with scenic resources within a state scenic highway will occur and
no mitigation is required.
Lc Less than Significant Impact.Based on the City's General Plan Land Use Map,the property adjoining
the project alignment has zoning designations of Light Industrial (IL) and Office/Industrial Park(OIP)
along Waterman Avenue at Orange Show Road. There will be minor visual impacts in the project area
where and when construction is occurring,which is expected to be 500 lineal feet of roadway per day or
City o(San Bernardino General Plan,Figure C-1 "Scenic llighwayv/Routes,"'Me Planning Center,November 2005,
Twin Creek Orange Show Road Storm Drain Project 14
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less. Due to the low number of residences in the area(approximately 16), visual impacts will only be
temporary and are considered to be less than significant. Upon completion, all project improvements
will mainly be below ground so there will be no long-term visual impacts,and no mitigation is required.
I.d No Impact.Development of the proposed flood control improvements would not require the installation
of any permanent outdoor lighting, although some temporary lighting of construction areas may be
necessary for the maintenance of public safety and security.Therefore,there will be no significant long-
term impacts related to light and glare and no mitigation is required.
IL AGRICULTURE and FORESTRY Potentially Less Than Significant Less Than
RESOURCES—Would the project: Significant with Mitigation Significant No
Impact Incorporated Impact Im act
a) Convert Prime Farmland,Unique Farmland ❑ ❑ ❑
of Statewide Importance (Farmland), as
shown on the maps prepared pursuant to
the Farmland Mapping and Monitoring
Program of the California Resources
Agency,to a non-agricultural use?
b) Conflict with agricultural zoning, an ❑ ❑ ❑
existing agricultural use, or Williamson
Act Conservation Contract?
c) Conflict with existing zoning for, or cause ❑ ❑ ❑
rezoning of, forest land (as defined in
Public Resources Code Section 12220[g]),
timberland(as defined by Public Resources
Code Section 4526), or timberland zoned
Timberland Production (as defined by
Government Code Section 51104[g])?
d) Result in the loss of forest land or ❑ ❑ ❑
conversion of forest land to non-forest use?
e) Involve other changes in the existing ❑ ❑ ❑
environment which,due to their location or
nature, could result in conversion of
Farmland, to non-agricultural use or
conversion of forest land to non-forest use?
Discussion
li.a No Impact. Farmland maps are compiled by the California Department of Conservation, Farmland
Mapping and Monitoring Program (FMMP), pursuant to the provisions of Section 65570 of the
California Government Code. These maps utilize data from the United States Department of
Conservation(USDA)Natural Resource Conservation Service(MRCS)soil survey and current land use
information using eight mapping categories and represent an inventory of agricultural resources within
San Bernardino County. The maps depict currently urbanized lands and a qualitative sequence of
agricultural designations. Maps and statistics use a process that integrates aerial photo interpretation,
Twin Creek Orange Show Road Storm Drain Project 15
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field mapping,a computerized mapping system,and public review.
The project area is designated as "Urban & Built-Up" land, by the FMMP' and no Prime, Unique, or
Statewide Important Farmlands are located on site. In addition, all project work will occur with public
road rights-of-way and a public flood control channel.As no conversion of such farmland would occur,
no impact related to this issue would occur with implementation of the proposed project.
Il.b No Impact. The California Land Conservation Act of 1965, commonly referred to as the Williamson
Act, enables local government to enter into contracts with private landowners for the purpose of
restricting specific parcels of land to agriculture or related open space use. In return,landowners receive
property tax assessments much lower than normal because they are based upon farming and open space
uses as opposed to full market value. The purpose of the Williamson Act is to encourage property
owners to continue to farm their land and to prevent the premature conversion of farmland to urban
uses. The project alignment is not located within a Williamson Act contract area;z therefore, no impact
would result from the proposed development and no mitigation is required.
Me No Impact. The project alignment is currently developed with flood control and roadway
improvements. There are no agricultural or forestry-related uses and it does not have any designated
forest land uses. The proposed project would not conflict with existing forest zoning, cause rezoning of
forest land, or result in the loss or conversion of forest lands to non-forest uses as no such resources
existing within the City. Therefore, no impacts associated with these issues would occur and no
mitigation is required.
It.d No Impact.Please refer to Checklist Response Il.c.
ll.e No Impact. Implementation of the proposed project would not result in the conversion of agricultural
land to a non-agricultural use as no agricultural uses exist on site. Similarly, no forestry uses exist on
site. In the absence of land designated for agricultural use or forestry use,no impact would occur and no
mitigation is required.
California Department of Conservation,Farmland Mapping and Monitoring Program,2011.
2 California Department of Conservation, Williamson Act GIS Coverage, San Bernardino County, San Bernardino County East
Valley Region Parcels Under Agricultural Contract,October 31,2013
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Potentially Less Than Significant Less Than
Significant with Mitigation Significant No
III. AIR QUALITY—Would the project: Impact Incorporated
__!M act impact
a) Conflict with or obstruct implementation ❑ ❑ ❑
of the applicable air quality plan? (South
Coast Air Basin)
b) Violate any air quality standard or ❑ ® ❑ ❑
contribute substantially to an existing
projected air quality violation based on
the thresholds in the SCAQMD's"CEQA
Air Quality Handbook?"
c) Result in a cumulatively considerable net ❑ ❑ ® ❑
increase of any criteria pollutant for which
the project region is non-attainment under
an applicable federal or state ambient air
quality standard (including releasing
emissions that exceed quantitative
thresholds for ozone precursors)?
d) Expose sensitive receptors to substantial ❑ ® ❑ ❑
pollutant concentrations?
e) Create objectionable odors affecting a ❑ ❑ ® ❑
substantial number of people based on the
information contained in the Project
Description Form?
f) Generate greenhouse gas em:may s, either ❑ ® ❑ ❑
directly or indirectly, that have a significant impact on the envent?
g) Conflict with any applicable plan, policy, ❑ ❑ ® ❑
or regulation of any agency adopted for
the purpose of reducing the emission of
greenhouse gases?
Discussion
III.a No Impact. The project is located within the South Coast Air Basin (Basin) and is within the
jurisdiction of the South Coast Air Quality Management District(SCAQMD).The Basin is bounded by
the Pacific Ocean to the west and the San Gabriel, San Bernardino, and San Jacinto Mountains to the
north and east. It includes all of Orange County, the non-Antelope Valley portions of Los Angeles
County,and the non-desert portions of Riverside and San Bernardino Counties.The project is located in
the City of San Bernardino,
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The current regional air qualit plan is the 2012 Air Quality Management Plan(AQMP)adopted by the
SCAQMD in February 2013 . The AQMP proposes attainment demonstration of the federal PM2 5
standards through a more focused control of sulfur oxides (SOx), directly emitted PM2.5i and nitrogen
oxides(NOx)supplemented with volatile organic compounds(VOC)by 2015.The 8-hour ozone control
strategy builds upon the PM2 5 strategy, augmented with additional NOx and VOC reductions, to meet
the standard by 2024 assuming a"bump-up"is obtained. A bump-up is a voluntary reclassification of a
non-attainment area to a higher classification, allowing for an extension of an attainment deadline. The
Basin is currently a federal and state nonattainment area for PM,o,PM2 5,and ozone.
The proposed project entails the construction of approximately one mile of below grade flood control
improvements (pipelines, reinforced concrete box channels, etc.) all of which will be built within
existing flood control or roadway rights-of-way. The road portion of the project area contains no zoning
designations,while the Twin Creek channel is designated Public Flood Control.Therefore,the proposed
project is consistent with existing General Plan and zoning designations.
The AQMP incorporates local General Plan land use assumptions and regional growth projections
developed by the Southern California Association of Governments (SCAG) to estimate stationary and
mobile source emissions associated with projected population and planned land uses. If a new land use
is consistent with the local General Plan and the regional growth projections adopted in the AQMP,then
the added emissions generated by the new project have been evaluated, are contained in AQMP, and
would not conflict with or obstruct implementation of the regional AQMP. Since the project does not
conflict with General Plan or zoning designations, it is not expected to hinder or obstruct
implementation of the AQMP.
Another measurement tool in determining consistency with the AQMP is to determine how a project
accommodates the expected increase in population or employment. In this case, the proposed project
would not result in any direct population or housing increase, and is only intended to accommodate
projected runoff volumes in this portion of the City. Based on this information, the proposed project
would not impair implementation of the AQMP(i.e.,no impact and no mitigation required).
Finally,the proposed project would accommodate growth that has been projected for the project vicinity
and sub-region through the construction of needed infrastructure, thus removing an impediment to
growth within the project area.Emissions projections used to establish SCAQMD attainment objectives
reflect adopted regional and local land use plans. Therefore,the emissions associated with the proposed
project are within the amounts already accounted for in the AQMP, and no significant inconsistency
with the AQMP would occur in this regard,and no mitigation is required.
Ill.b. Less than Significant Impact with Mitigation 2. The SCAQMD has developed the CE QA Air Quality
Handbook that establishes suggested significance thresholds based on the volume of pollution emitted.
According to the Handbook,arty project in the Basin with daily emissions that exceed any of the following
thresholds should be considered as having an individually and cumulatively significant air quality impact:
• 55 lbs.per day of ROC(reactive organic compounds)(75 lbs./day during construction);
• 55 lbs.per day of NOx(oxides of nitrogen)(100 lbs./day during construction);
• 550 lbs.per day of CO(carbon monoxide)(5501bs./day during construction);
• 150 lbs.per day of PM,o(1501bs./day during construction);and
Final 2012 Air Quality Management Plan,South Coast Air Quality Management District,final adopted February 2013,
2 Construction emissions only,other impacts are less than significant.
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150 lbs.per day of SOx(oxides of sulfur)(150 lbs./day during construction).
Construction Emissions. Air quality impacts would occur during site preparation, including roadway
demolition, asphalt removal, grading, and construction equipment exhaust. Major sources of emissions
include exhaust emissions from construction vehicles and equipment and fugitive dust generated by
construction vehicles and equipment traveling over exposed surfaces, as well as by soil disturbances
from grading and filling. Grading and construction activities would cause combustion emissions from
utility engines,heavy-duty construction vehicles,haul trucks,and vehicles transporting the construction
crew. Exhaust emissions during grading and construction activities envisioned on site would vary as
construction activity levels change. Fugitive dust emissions are generally associated with demolition,
land clearing, exposure of soils and cut and fill operations. Dust generated daily during construction
would vary substantially, depending on the level of activity, the specific operations, and weather
conditions. The emissions associated with site grading and the construction are estimated in Table C.
These estimates are based on the reasonable worst case assumptions for daily construction activities
outlined in the project description(section 8,page 4).
Table C—Short-Term Construction Emissions(Worst Case Daily)
Total Regional Pollutant Emissions,lbs/day
Construction Fugitive Exhaust Fugitive Exhaust
Activity ROG NOx CO S02 PM" PMta PM2s PM2s CO2e
Demolition 4.6 46.0 32.0 0.04 0.25 2.7 0.062 2.5 4,100
Trenching 6.0 66.0 38.0 0.064 0.52 3.3 0.14 3.0 6,700
Construction 5.8 46.0 32.0 0.053 0.50 2.7 0.14 2.6 5,300
Peak Daily 6.0 66.0 38.0 0.064 3.8 3.1 6,700
Emissions
SCAQMD 7S 100 550 150 150 55
Thresholds No Threshold
Significant No No No FNo No No
Emissions?
Source:LSA Associates,Inc,January 2015(see Appendix A)
CO=carbon monoxide PMz 5=particulate matter less than 2 5 microns in size
COz=carbon dioxide PM 10=particulate matter less than 10 microns in size
COm=carbon dioxide equivalent ROO=reactive organic compounds
lbs/day=pounds per day SCAQMD=South Coast Air Quality Management District
NO,=nitrogen oxides SO,=sulfur oxides
Equipment Exhaust. During the construction phases of development,on-site stationary sources,heavy-
duty construction vehicles, construction worker vehicles, and energy use would generate emissions.
Exhaust emissions during the construction activities envisioned on site would vary daily as construction
activity levels change. The volume of construction equipment exhaust would not exceed SCAQMD
daily thresholds.
Fugitive Dust.Fugitive dust emissions are generally associated with demolition,land clearing,exposure
of soils, and cut and fill operations. Dust generated daily during construction would vary substantially,
depending on the level of activity, the specific operations, and weather conditions. Even during peak
grading days, daily total construction emissions would not exceed the SCAQMD threshold for PM10,
and all other emissions are below SQACMD daily thresholds as well. With the implementation of the
standard conditions such as frequent watering (i.e., minimum twice a day) fugitive dust emissions can
be reduced by approximately 50 percent. Even when combined with the nearly 5 pounds per day of
PMio generated by equipment exhaust,the total mitigated daily dust emission would be well below the
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SCAQMD threshold of 150 pounds per day, as shown in Table C. When properly coordinated,
construction equipment emissions would not exceed the daily thresholds for the criteria pollutants of
NOx,ROC,CO,SOx,or PMio•
Local Significance Thresholds. In addition to emission generation, the SCAQMD CEQA Handbook
requires an evaluation of how construction emissions may affect "sensitive receptors" like residents,
young children, the elderly, etc. during construction using local significance thresholds (LSTs). As
indicated in Table D, the project LSTs would be considerably lower than the SCAQMD standards for
NOx, CO, and PM 10, and were just below the SCAQMD threshold for PM25. These estimates take into
account the proximity of construction equipment to the existing residences near the southeast corner of
the project alignment. Therefore,the project will not result in a significant air quality impact relative to
LSTs(LSA Associates,Inc.,January 2015,Appendix A).
Mitigation Measures In order to fully mitigate for construction-related air quality impacts,the City will
require the preparation and approval of a Dust Control Plan to be reviewed and approved by the Public
Works Division. In addition,the project proponent shall incorporate the following mitigation measures
into the project. Adherence to these measures would reduce total daily construction emissions of PMio
to below the SCAQMD threshold. The other four air pollutant emissions would be below the daily
thresholds established by the SCAQMD without mitigation.
AIR-1 The project shall comply with the requirements of SCAQMD Rules 402 and 403,Fugitive Dust,
which require the implementation of Reasonable Available Control Measures (RACM) for all
fugitive dust sources, and the AQMP, which identifies Best Available Control. Measures
(BACM) and Best Available Control Technologies(BACT)for area sources and point sources,
respectively.This would include but would not be limited to the following actions:
1. The project proponent shall ensure that construction equipment is properly maintained and
serviced to minimize exhaust emissions.
2. The project proponent shall ensure that existing power sources are utilized where feasible
via temporary power lines to avoid on-site power generation.
3. The project proponent shall ensure that construction employees be informed of ride-sharing
and transit opportunities.
4. The project proponent shall ensure that any portion of the site to be graded shall be
prewatered to a depth of three feet prior to the onset of grading activities.
5. The project proponent shall ensure that twice daily watering of the site or other soil
stabilization methods shall be employed on an ongoing basis after the initiation of any on-
site grading activity. Portions of the site that are actively being graded shall be watered
regularly to ensure that a crust is formed on the ground surface, and shall be watered at the
end of each workday.
6. The project proponent shall ensure that all disturbed areas are treated to prevent erosion
until the site is constructed.
7. To reduce the potential for wind erosion,the project proponent shall ensure that landscaped
areas,if any,are installed as soon as possible.
8. The project proponent shall ensure that SCAQMD Rule 403 is adhered to, ensuring the
cleanup of construction-related dirt on approach routes to the project alignment.
9. The project proponent shall ensure that all grading activities are suspended during first and
second stage ozone episodes or when wind speeds exceed 25 miles per hour.
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10. Cover all trucks hauling dirt, sand, soil, or other loose materials,or maintain at least 0.6 m
(2 feet) of freeboard (vertical space between the top of the load and top of the trailer)in
accordance with the requirements of California Vehicle Code(CVC)Section 23114.
11. Limit all on-site traffic speeds to 15 mph or less.
Operational Emissions. Since the project will not introduce any developed land uses into the project
alignment, there will be only minor long-term pollutant emissions associated with vehicular use or
stationary sources mainly during maintenance activities created by the consumption of fossil fuels.
There would also be no emissions from the consumption of natural gas on site or electricity (runoff
controlled by gravity).
Local Significance Thresholds. In addition to emission generation, the SCAQMD CEQA Handbook
requires an evaluation of how regional emissions may affect"sensitive receptors" like residents,young
children, the elderly, etc. over the long term, using Local Significance Thresholds (LSTs). The air
quality assessment for the project indicates that the project LSTs would be considerably lower than the
SCAQMD standards for NOx,CO, PM,o,and PM2 5•These estimates take into account the proximity of
construction equipment to the existing residences near the southeast corner of the project alignment.
Therefore,the project will not result in a significant air quality impact relative to LST(refer to Table D
below).Impacts are less than significant and no mitigation is required.
Table D: Construction LST Emissions
Onsite Emissions Ibs/da
On-Site Emissions Sources NOx CO PMTS PMzs
Construction Activities 61 33 3.2 2.9
LST Thresholds 170 972 7.0 4.0
Significant Emissions? No No No No
Source:LSA Associates,Inc.,January 2015(Appendix A).
SRA:Central San Bernardino Valley,2 acres,25 meter distance or less
CO=carbon monoxide PM2 5=particulate inatter less than 2.5 microns in size
lbs/day=pounds per day PM10 particulate matter less than 10 microns in size
LST=Localized Significance threshold
NOx=nitrogen oxides
CO Hosspots. The SCAQMD CEQA Handbook recommends an assessment of the buildup of carbon
monoxide(CO)from vehicles idling at congested intersections to determine if the traffic generated by a
proposed project would exceed any state or federal CO standards. in this case, the project does not
introduce any new land uses and so it will not generate long-term traffic other than occasional
maintenance trips. Therefore, project-related traffic would not create any CO hotspots by increased
traffic congestion,impacts are less than significant,and no mitigation is required.
lIl.c Less than Significant. As stated in the response to Checklist Question Ill.a, the project is in a non-
attainment basin for PM lo, PM2 5,and ozone. The proposed project would incrementally contribute non-
attainment pollutants to the air basin. However, project emissions would be below SCAQMD
significance thresholds, as discussed in question III.b. The AQMP incorporates local General Plan land
use assumptions and regional growth projections developed by the SCAG to estimate stationary and
mobile source emissions associated with projected population and planned land uses. The proposed
project would be consistent with the development envisioned in the City's General Plan (i.e., General
Plan and zoning designations), therefore, the cumulative effects associated with development of the
proposed uses has already been addressed in the AQMP, there are no significant impacts and no
mitigation is required.
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III.d Less than Significant Impact with Mitigation. Sensitive receptors are defined as populations that are
more susceptible to the effects of pollution than the population at large. The SCAQMD identifies the
following as sensitive receptors: long-term healthcare facilities, rehabilitation centers, convalescent
centers, retirement homes, schools, playgrounds, childcare centers, and athletic facilities. The project
alignment is in an area that is largely vacant but with scattered industrial and commercial uses.
Although there are no institutional sensitive receptors in the project area, there are approximately
sixteen homes immediately adjacent to the project construction area (along Orange Show Road and
Lena Road). The closest off-site sensitive land uses to the project alignment are two residences located
approximately 50 feet from planned construction along Orange Show Road. The construction of the
project alignment would temporarily produce construction emissions near these residences, but
emissions would be short-term and would not exceed SCAQMD thresholds as indicated in previously
referenced Table B. As indicated in Section III.b, the project would not exceed the Local Significance
Thresholds for construction or operational emissions for residences closest to the project alignment
(LSA Associates, Inc., January 2015, Appendix A). Operational emissions from the project would also
be below the SCAQMD thresholds. Therefore, impacts related to sensitive receptors issue are
considered to be less than significant with implementation of Mitigation Measure AIR-1, and no
additional mitigation is required.
Due to its nature,the proposed project does not require a Health Risk Assessment(HRA)to determine if
project emissions from trucks such as diesel particulates would cause any long-term health risks for
residents living closest to the project alignment. Therefore, potential health impacts are less than
significant and no mitigation is required.
IILe Less than Significant Impact. During construction, diesel-powered vehicles and equipment in use on
the site could create minor impacts regarding odors. These odors are temporary and not likely to be
noticeable beyond the project boundaries. SCAQMD Rules 1108 identifies standards regarding the
application of asphalt, and adherence to the standards identified in this rule would reduce temporary
odor impacts to a less than significant level. Long-term objectionable odors are not expected to occur
because the project involves flood control improvements that will largely be undergrounded,so impacts
would be less than significant and no mitigation is required.
IILf Less than Significant Impact with Mitigation. LSA estimated greenhouse gas (GHG) emissions
which are included in Appendix A of this document(see also previous Table B).The project GHG study
provides information on their physical and chemical attributes, their regulatory framework, and
evaluates potential GHG emissions associated with the proposed project. Modeled project emissions in
the study were based on project design, anticipated vehicle usage, and energy usage for the project. In
addition, the evaluation was prepared in conformance with appropriate standards, utilizing procedures
and methodologies in the SCAQMD CEQA Air Quality Handbook and the State CEQA Guidelines.
The GHG study estimated that the project would produce a maximum of 6,700 pounds per day of GHGs
during construction (worst case daily estimate — see Table C). Assuming all of the work could be
completed in four months if it were done at one time, the project would emit a total of 294.8 tons of
GI IGs during construction(6,700 pounds per day times 88 days). The SCAQMD has not yet established
a formal GHG emission significance threshold, therefore, the project is not expected to result in any
significant long-term GHG emissions since the project does not involve new land uses and its function
depends on gravity flow so it will have no energy use from pumping or equipment operation.
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The following measure is recommended to help minimize GHG emissions from the project during
construction to the extent practical:
GCC-1 To the extent practical and to the satisfaction of the City, the following shall be incorporated
into the design and construction of the project:
• Use locally produced and/or manufactured building materials for at least 10 percent of the
construction materials used for the project.
• Use "Green Building Materials," such as those materials that are resource efficient, and
recycled and manufactured in an environmentally friendly way,for at least 10 percent of the
project.
• Limit unnecessary idling of construction equipment.A reduction in equipment idling would
reduce fuel consumption,and therefore,GHG emissions.
• Maximize the use of electricity from the power grid by replacing diesel- or gasoline-
powered equipment during construction. This would reduce GHG emissions because
electricity can be produced more efficiently at centralized power plants.
After implementation of application of regulatory requirements and the recommended mitigation
measure, the project would implement appropriate GHG reduction strategies and would not conflict
with or impede implementation of reduction goals identified in AB 32,the Governor's Executive Order
S-3-05, and other strategies to help reduce GHGs to the level proposed by the Governor. The control
measures listed in Mitigation Measure GCC-1 would further reduce the project's GHGs, and
therefore,the project's contribution to GHG emissions.
The project would not be significantly affected by global climate change since it is away and elevated
from the coast (predicted sea level rise) and it is not in a urban/wildland interface (increased drought
and fire risks).
IIl.g Less than Significant Impact.The Climate Action Team(CAT)and the CARB have developed several
reports to achieve the Governor's GHG targets that rely on voluntary actions of California businesses,
local government and community groups, and state incentive and regulatory programs. These include
the CAT's 2006 "Report to Governor Schwarzenegger and the Legislature," the CARB's 2007
"Expanded List of Early Action Measures to Reduce Greenhouse Gas Emissions in California,"and the
CARB's "Climate Change Proposed Scoping Plan: a Framework for Change." The reports identify
strategies to reduce California's emissions to the levels proposed in Executive Order S-3-05 and AB 32
(i.e., 29% below existing"business as usual" emissions) as shown in Tables E and F below. However,
the proposed project does not involve development of any new land uses or architectural facilities,only
underground storm drainage improvements, so there will only be short-term GHG emissions from
construction and no long-term GHG emissions from the project. Therefore,the project does not need to
comply with the long-term recommended CAT or CARB actions. In addition, implementation of
Mitigation Measure GCC-1 will help reduce construction-related GHG emissions. With implementation
of the recommended mitigation measure, the proposed project will have less than significant impacts
related to greenhouse gases and global climate change.
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Table E—Recommended Actions for Climate Change Project Summary
ID Applicable to Will Project Conflict
No. Sector Strategy Name Project? with Implementation?
T-1 Transportation Pavley I and 1I—Light-Duty Vehicle GHG No No
Standards
T-2 Transportation Low Carbon Fuel Standard(Discrete Early No No
Action)
T-3 Transportation Regional Transportation-Related GHG No No
Targets
T-4 Transportation Vehicle Efficiency Measures No No
T-5 Transportation Ship Electrification at Ports(Discrete Early No No
Action)
T-6 Transportation Goods-movement Efficiency Measures No No
T-7 Transportation Heavy Duty Vehicle Greenhouse Gas
Emission Reduction Measure— No No
Aerodynamic Efficiency(Discrete Early
Action)
T-8 Transportation Medium and Heavy-Duty Vehicle No No
Hybridization
'f-9 Transportation High Speed Rail No No
E-1 Electricity and Increased Utility Energy Efficiency
Natural Gas Programs.More Stringent Building and No No
Appliance Standards
E-2 Electricity and Increased Combined Heat and Power Use by No No
Natural Gas 30,000 GWh
E-3 Electricity and Renewable Portfolio Standard No No
Natural Gas
E-4 Electricity and Million Solar Roofs
Natural Gas No No
CR-1 Electricity and Energy Efficiency No No
Natural Gas
CR-2 Electricity and Solar Water Heating No No
Natural Gas
GB-1 Green Buildings Green Buildings No No
W-1 Water Water Use Efficiency No No
W-2 Water Water Recycling No No
W-3 Water Water System Energy Efficiency No No
W-4 Water Reuse Urban Runoff No No
W-5 Water Increase Renewable Energy Production No No
W-6 Water Public Goods Charge(Water) No No
I-1 Industry Energy Efficiency and Cost-Benefits Audits No No
for Large Industrial Sources
I-2 Industry Oil and Gas Extraction GHG Emission No No
Reduction
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Table E—Recommended Actions for Climate Change Project Summary
ID Applicable to Will Project Conflict
No, Sector Strategy Name Project? with Implementation?
1-3 Industry GHG beak Reduction from Oil and Gas No No
Transmission
I-4 Industry Refinery Flare Recovery Process No No
Improvements
I-5 Industry Removal of Methane Exemption from No No
Existing Refinery Regulations
RW-I Recycling and Landfill Methane Control(Discrete Early No No
Waste Management Action)
RW-2 Recycling and Additional Reduction in Landfill Methane— No No
Waste Management Capture Improvements
RW-3 Recycling and High Recycling/Zero Waste No No
Waste Management
F-1 Forestry Sustainable Forest Target No No
H-1 High Global Motor Vehicle Air Conditioning Systems No
Warming Potential (Discrete Early Action) No
Gases
I1-2 High Global SF6 Limits in Non-Utility and Non- No
Warming Potential Semiconductor Manufacturing(Discrete No
Gases Early Action)
H-3 High Global Reduction in Perfluorocarbons in No
Warming Potential Semiconductor Manufacturing(Discrete No
Gases Early Action)
11-4 High Global Limit High GWP Use in Consumer Products No
Warming Potential (Discrete Early Action,Adopted June 2008) No
Gases
H-5 Iligh Global High GWP Reduction from Mobile Sources No No
Warming Potential
Gases
H-b High Global High GWP Reductions from Stationary No No
Warming Potential Sources
Gases
H-7 High Global Mitigation Fee on High GWP Gases No No
Warming Potential
Gases
A-] Agriculture Methane Capture at Large Dairies No No
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Table F—Project Compliance with Greenhouse Gas Emission Reduction Strategies
Strategy I Project Compliance
Mandatory Code
California Green Building Code. The Cal Green Code prescribes a Compliant. The project will be required to
wide array of measures that would directly and indirectly result in adhere to applicable non-residential mandatory
reduction of GHG emissions from the Business as Usual Scenario measures required by the CalGreen Code(e.g.,
(California Building Code).The mandatory measures that are applicable pipeline grading and placement, pipeline
to nonresidential projects include site selection,energy efficiency, water materials,concrete pouring and curing,etc.)..
efficiency, materials conservation and resource efficiency, and
environmental quality measures.
Energy Efficiency Measures
Energy Efficiency. Maximize energy efficiency building and appliance
standards, and pursue additional efficiency efforts including new
technologies, and new policy and implementation mechanisms. pursue
comparable investment in energy efficiency from all retail providers of
electricity in California (including both investor-owned and publicly Not Applicable.The proposed project will not
owned utilities). be required to comply with the updated Title
Renewables Portfolio Standard. Achieve a 33 percent renewable 24 standards for building construction as it
energy mix statewide. does not entail development of any buildings.
Green Building Strategy.Expand the use of green building practices to
reduce the carbon footprint of California's new and existing inventory of
buildings.
Water Conservation and Efflelency Measures
Water Use Efficiency. Continue efficiency programs and use cleaner Not Applicable.The proposed project will not
energy sources to move and treat water.Approximately 19 percent of all be required to comply with water use or
electricity,30 percent of all natural gas,and 88 million gallons of diesel conservation requirements as it does not
are used to convey,treat,distribute and use water and wastewater in the include construction of any buildings.
state. Increasing the efficiency of water transport and reducing water use
would reduce GHG emissions.
Solid Waste Reduction Measures
Increase Waste Diversion, Composting, and Commercial Recycling, Compliant The proposed project will
and Move Toward Zero-Waste. Increase waste diversion from landfills implement the recommended mitigation
beyond the 50 percent mandate to provide for additional recovery of measure GCC-1 to increase solid waste
recyclable materials. Composting and commercial recycling could have diversion and recycling from construction
substantial GHG reduction benefits.In the long term,zero waste policies activities(no operational wastes expected).
that would require manufacturers to design products to be fully
recyclable may be necessary.
Transportation and Motor Vehicle Measures
Vehicle Climate Change Standards. AR 1493 (Pavley) required the
State to develop and adopt regulations that achieve the most feasible and
cost-effective reduction of GHG emissions from passenger vehicles and
light-duty trucks. Regulations were adopted by the CARB in September
2004. Compliant. The project does not involve the
Light-Duty Vehicle Efficiency Measures. Implement additional manufacture of vehicles. However, vehicles
measures that could reduce light-duty GHG emissions. For example, that are purchased and used within the project
measures to ensure that tires are properly inflated can both reduce GHG alignment would comply with any vehicle and
emissions and improve fuel efficiency. fuel standards that the GARB adopts.
Adopt Heavy- and Medium-Duty Fuel and Engine Efficiency
Measures. Regulations to require retrofits to improve the fuel efficiency
of heavy-duty trucks that could include devices that reduce aerodynamic
drag and rolling resistance.This measure could also include hybridization
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Table F—Project Compliance with Greenhouse Gas Emission Reduction Strategies
Strategy Project Compliance
of and increased engine efficiency of vehicles.
Low Carbon Fuel Standard. The CARB identified this measure as a
Discrete Early Action Measure. This measure would reduce the carbon
intensity of California's transportation fuels by at least 10 percent by
2020.
Regional Transportation-Related Greenhouse Gas Targets. Develop Not Applicable. Specific regional emission
regional GHG emissions reduction targets for passenger vehicles. Local targets for transportation emissions do not
governments will play a significant role in the regional planning process directly apply to this project,so regional GHG
to reach passenger vehicle GIIG emissions reduction targets. Local reduction targets are also outside the scope of
governments have the ability to directly influence both the siting and this project.
design of new residential and commercial developments in a way that
reduces GHGs associated with vehicle travel.
Measures to Reduce High Global Warming Potential(GWP) Gases. Compliant.New products used or serviced on
The CARB has identified Discrete Early Action measures to reduce GHG the project alignment(after implementation of
emissions from the refrigerants used in car air conditioners,
the reduction of GHG gases) would comply
semiconductor manufacturing, and consumer products. The CARB has with future CARB rules and regulations.
also identified potential reduction opportunities for future commercial
and industrial refrigeration, changing the refrigerants used in auto air
conditioning systems, and ensuring that existing car air conditioning
systems do not leak.
AB=Assembly Bill
CARB=California Air Resources Board
GHG=greenhouse gas
Potentially Less Than Significant less Than
IV. BIOLOGICAL RESOURCES—Would Significant with Mitigation Significant No
the project: Im act Incor orated Im act Im act
a) Have a substantial adverse effect, either ❑ ® ❑ El
directly or through habitat modifications,on
any species identified as a candidate,
sensitive,or special status species in local or
regional plans,policies,or regulations,or by
the California Department of Fish and Game
or U.S.Fish and Wildlife Service?
b) Have a substantial adverse effect on any ❑
riparian habitat or other sensitive natural
community identified in local or regional
plans, policies, regulations, or by the
California Department of Fish and Game or
U.S.Fish and Wildlife Service?
C) Have a substantial adverse effect on federally ❑ ® ❑ ❑
protected wetlands as defined by Section 404
of the Clean Water Act (including but not
limited to, marsh, vernal pool, coastal, etc.)
through direct removal, filling hydrological
interruption,or other means?
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d) Interfere substantially with the movement of
any native resident or migratory wildlife
corridors,or impede the use of native wildlife
nursery sites?
e) Conflict with any local policies or ordinances ® E]
protecting biological resources,such as a tree
preservation policy of ordinance?
f) Conflict with the provisions of an adopted El C]
Habitat Conservation Plan, Natural
Community Conservation Plan, or other
approved local, regional, or state habitat
conservation plan?
Discussion
IV.a Less than Significant with Mitigation.The project is not anticipated to result in significant impacts to
candidate,sensitive,or special-status species in local or regional plans,policies,or regulations,or by the
California Department of Wildlife (CDFW)or U.S. Fish and Wildlife Service (USFWS). The majority
of the site is within the rights-of-way of two public streets,Orange Show Road from Twin Creek east to
Lena Road(3,500 feet)and Lena Road from Orange Show Road north to 500 feet north of Norman Way
(1,600 feet),a total of approximately one mile.
The road portion of the site contains no native or landscaping vegetation, although some of the
residential properties adjacent to the project alignment have bushes and some large trees. LSA
Associates Inc.(LSA 2015) has prepared a biological assessment and regulatory permit applications for
the proposed project(see Appendix B), and the following information is based on those materials. The
Twin Creek Channel does not contain riparian and water-related habitat, and the onsite vegetation
consists of bare ground, developed land, and annual grassland(see Appendix B). All plants were either
identified by qualified staff in the field or collected and identified by a botanist—vegetation did not
meet the USACE's hydrophytic vegetation criteria.
The proposed improvements to the flood control channel inlet will impact less than 0.01-acre(140 lineal
feet) of "Waters of the U.S." under the federal jurisdiction of the U.S. Army Corps of Engineers
(USACE) pursuant to Section 404 of the federal Clean Water Act (CWA) and Regional Water Quality
Control Board (RWQCB) pursuant to Section 401 of the CWA. The proposed improvements to Twin
Creek Channel will also result in impacts to 0.245-acre of streambed(i.e., "Waters of the State")under
the jurisdiction of the California Department of Fish and Wildlife.
Prior to conducting a general biological resources site visit, LSA conducted a literature review to
determine the existence or potential for occurrence of special-status plant and animal species on or in
the vicinity of the project alignment. Database records for the San Bernardino North, San Bernardino
South, Harrison Mountain, and Redlands, California U.S. Geological Survey (USGS) 7.5-minute
quadrangles were searched on December 12, 2014, using the CDFW's Natural Diversity Online Data
Base application Rarefind 5 (CDFW, NDDB) and the California Native Plant Society's (CNPS)
Electronic Inventory of Rare and Endangered Vascular Plants of California (online edition, CNPS,
2014,http://www.cnps.org/). Aerial photographs(1938, 1959, 1968, 1980, 2005,2006,2007,and 2009)
were reviewed using HistoricAerials.com,and maps of USF"WS designated critical habitats were used to
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determine the locations of critical habitats relative to the project alignment. The project alignment is
mapped within designated critical habitat for the Southwestern willow flycatcher (Empidonaz traillii
extimus)(SWWF)(revised Final Critical Habitat for the SWWF,January 3, 2013). However, within the
revised critical habitat boundaries,only lands containing some or all of the primary constituent elements
(PCEs) identified for the species are designated as critical habitat, and the project alignment does not
contain these resources,as discussed below..
The project alignment is located in an area mapped as designated critical habitat for the Southwestern
willow flycatcher (Empidonax traillii extimus)(SWWF) in their revised Final Critical Habitat for the
SWWF dated January 3, 2013. However, within the revised critical habitat boundaries, only lands
containing some or all of the primary constituent elements (PCE) identified for the species are
designated as critical habitat.For the SWWF,these PCB include:
• Trees and shrubs that include but are not limited to species of willow and box elder;
• Dense riparian vegetation with thickets of trees and shrubs ranging in height from 6 to 98 feet tall in
middle and lower elevation riparian forests, and with lower-stature thickets(6 to 13 feet tall)found
at higher elevation riparian;
• Dense riparian understory foliage at least from the ground level up to approximately 13 feet;
• Sites for nesting that contain a dense tree and/or shrub canopy (i.e., a tree or shrub canopy with
densities ranging from 50 percent to 100 percent);
• Dense patches of riparian forests that are interspersed with small openings of open water or marsh
or shorter/sparser vegetation,that creates a mosaic;and
• A variety of insect prey populations(wasps,bees,flies,beetles,butterflies,and moths,etc.).
The Twin Creek channel portion of the project area consists of non-native grassland vegetation and does
not contain any trees or other riparian vegetation.The maximum height that species identified within the
project area would reach is approximately three feet tall. The project area is regularly maintained for
flood control purposes and vegetation is mowed on a regular basis. Therefore, vegetation will never
meet the requirements of the PCE identified above so long as the Twin Creek Channel is maintained for
its designated flood control purpose. Additionally, implementation of the project will not result in
degradation of critical habitat that occurs downstream. The Twin Creek Channel will continue to
function as a flood control channel,and the hydrologic regime of downstream areas will not be affected.
The CDFW, USFWS, local agencies, and special interest groups, such as the CNPS, maintain lists of
species that they consider to be in need of monitoring.Legal protection for these special interest species
varies widely.Of the special interest species known to occur in the general area,only the burrowing owl
(Athene cunicularia)could potentially be found on site.No other special interest species are expected to
occur within the project alignment due to unsuitable habitat conditions existing on the site (i.e., the
small portion of the Twin Creek Channel and the one mile of improved public roadways). Due to the
highly disturbed nature of the vegetation on site, the project area does not contain suitable habitat for
any other species protected under the California Endangered Species Act (CESA) or the Federal
Endangered Species Act(FESA)and no additional species surveys are required.
Suitable habitat for the burrowing owl is present within the project alignment at this time, however, no
sign of burrowing owl was found on site.Therefore,the following mitigation measure is proposed:
BIO-1 A pre-construction burrowing owl survey shall be conducted within 10 days prior to beginning
of site grading in the event that burrowing owls occupy the site in the future. Surveys and
relocation, if applicable, shall be conducted between September 1 and January 31. It is
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anticipated that the survey protocols will, at a minimum, reflect the standards of the CDFW
Staff Report on Burrowing Owl Mitigation(2012,as summarized below).
If burrowing owls are found on-site during the pre-construction surveys, they will be protected
in place through the use of buffer zones, visual screens, or other measures, while construction
activities are occurring. The CDFW Staff Report on Burrowing Mitigation includes appropriate
buffer zones based on the timing of construction that will be implemented, if needed. If
occupied burrows are too close to proposed construction areas to allow for appropriate
protection in place,a qualified biologist will discuss additional avoidance options with CDFW.
If needed,owls will be relocated by a qualified biologist from any occupied burrows that cannot
be avoided by project activities into adjacent suitable habitat. Suitable habitat is undeveloped
land that can meet tine burrowing owl's life cycle requirements(for both foraging and breeding)
and is not intended for development. Suitable habitat must be adjacent or near the disturbance
site or artificial burrows will need to be provided nearby. Once the biologist has confirmed that
the owls have left the burrow, burrows should be excavated using hand tools and refilled to
prevent reoccupation.
Owls shall be excluded from burrows using passive relocation techniques within the approved
limits of disturbance and an appropriate buffer zone. This will be conducted by a qualified
biologist by installing one-way doors in burrow entrances. The qualified biologist will also
determine whether creation of artificial burrows is necessary as part of the relocation effort.
A Burrowing Owl Relocation Plan(Relocation Plan)prepared by a qualified biologist shall be
submitted to the CDFW for review and approval prior to relocation of owls. The Relocation
Plan shall describe proposed relocation and monitoring plans and shall include the number and
location(s)of occupied burrow sites and details on adjacent or nearby suitable habitat available
to owls for relocation. If no suitable habitat is available nearby for relocation,details regarding
the creation of artificial burrows(numbers, locations,and type of burrows)shall be included in
the plan.The Relocation Plan shall also describe proposed mitigation to compensate for impacts
to burrowing owls/occupied burrows within the project alignment.
With implementation of this measure, the proposed project will have less than significant impacts on
listed or otherwise sensitive species.
IV.b-c Less than Significant with Mitigation.The extreme western portion of the project consists of the Twin
Creek Flood Control Channel which is a state and federally recognized drainage feature that flows into
the Santa Ana River to the south. It is subject to the federal jurisdiction of both the U.S.Army Corps of
Engineers (USACE) and the Regional Water Quality Control Board (RWQCB) and is subject to state
jurisdiction by the CDFW.The following information was excerpted from the biological assessment and
USACE permitting documentation prepared for the proposed project(see Appendix B).
The project alignment is located in an area mapped as designated critical habitat for the Southwestern
willow flycatcher (Empidonax tradhi extimus)(SWWF) in their revised Final Critical Habitat for the
SWWF dated January 3, 2013. However, within the revised critical habitat boundaries, only lands
containing some or all of the primary constituent elements (PCE) identified for the species are
designated as critical habitat.For the S W WF,these PCE include:
• Trees and shrubs that include but are not limited to species of willow and box elder;
• Dense riparian vegetation with thickets of trees and shrubs ranging in height from 6 to 98 feet tall in
middle and lower elevation riparian forests, and with lower-stature thickets(6 to 13 feet tall)found
at higher elevation riparian;
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• Dense riparian understory foliage at least from the ground level up to approximately 13 feet;
• Sites for nesting that contain a dense tree and/or shrub canopy (i.e., a tree or shrub canopy with
densities ranging from 50 percent to 100 percent);
• Dense patches of riparian forests that are interspersed with small openings of open water or marsh
or shorter/sparser vegetation,that creates a mosaic;and
• A variety of insect prey populations(wasps,bees,flies,beetles,butterflies,and moths,etc.).
The Twin Creek channel portion of the project area consists of non-native grassland vegetation and does
not contain any trees or other riparian vegetation.The maximum height that species identified within the
project area would reach is approximately three feet tall. The project area is regularly maintained for
flood control purposes and vegetation is mowed on a regular basis. Therefore, vegetation will never
meet the requirements of the PCE identified above so long as the Twin Creek Channel is maintained for
its designated flood control purpose. Additionally, implementation of the project will not result in
degradation of critical habitat that occurs downstream. The Twin Creek Channel will continue to
function as a flood control channel,and the hydrologic regime of downstream areas will not be affected.
Based on available information, the project is not expected to result in any significant impacts on
riparian habitat or other sensitive natural communities are anticipated. However, the following
mitigation is proposed to assure there will be no significant loss of riparian habitat as a result of work
within the Twin Creek Channel:
11I0-2 The Project applicant shall mitigate riparian/riverine habitat impacts in the Twin Creek Channel
at a minimum 1:1 ratio. If onsite mitigation is determined to be insufficient by the resource
agencies, the project applicant shall mitigate any residual onsite impacts to riparian/riverine
habitat through the purchase of mitigation credits at a ratio of 2:1.The mitigation credits will be
purchased through the Inland Empire Resource Conservation District (IERCD) to ensure high
quality habitat is preserved/restored within the same watershed as the impact area.
W.d Less than Significant Impact with Mitigation. Due to the area's predominantly developed nature and
the site's current condition, the roadway portion of the project alignment does not provide suitable
foraging ground or localized movement for wildlife, however, the Twin Creek portion of the site does
provide limited value to biological resources in this regard. Habitat fragmentation occurs when a
proposed action results in a single, unified habitat area being divided into two or more areas, such that
the division isolates the two new areas from each other.Isolation of habitat occurs when wildlife cannot
move freely from one portion of the habitat to another or from one habitat type to another. An example
is the fragmentation of habitats within and around clustered residential development. Habitat
fragmentation may occur when a portion of one or more habitats is converted into another habitat, as
when scrub habitats are converted into annual grassland habitat because of frequent burning. The San
Bernardino Valley is subject to ongoing urbanization and consequent loss of habitat and open space.
Furthermore, the project alignment consists of a flood control channel and two fully developed
roadways with nearby urban development,so it is not part of a larger interconnected movement corridor
for wildlife. Therefore, impacts are less than significant. However, implementation of Mitigation
Measure BIO-2 will help assure no net loss of riparian resources within the watershed as a result of
project implementation.
It is possible that nearby nesting habitat may be indirectly affected by proposed project activities.Trees
and shrubs on nearby residential properties may provide nesting habitat for birds at various times of the
year. Increased noise and human presence during construction activities may cause birds to abandon
nests or negatively affect nestlings.Typically,the CDFW requires construction activities within 300 feet
of trees and shrubs be scheduled outside of the avian nesting season. If construction activities are
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planned during the avian nesting season (February 15 through August 31), a pre-construction nesting
bird survey should be conducted within three days prior to commencement to avoid impacts to birds
protected under the Migratory Bird Treaty Act (META). The following mitigation will ensure that
potential impacts in this regard are reduced to less than significant levels.
BIO-3 If project activities are planned during the avian nesting season (approximately February 1
through August 31), nesting bird surveys shall be conducted within three days prior to
disturbance to ensure birds protected under the MBTA are not disturbed by construction-related
activities such as noise and increased human presence. Any active nests detected in the area
shall be flagged and an appropriate buffer around the nest location will be established, as
determined by the CDFW.The buffer area is to be avoided until the nesting cycle is complete or
it is determined by the biologist that the nest has failed.
IV.e Less than Significant Impact.The City has a tree removal policy that states that if more than five trees
are to be removed, a tree removal permit application must be submitted to and approved by the City.'
The City typically requires a replacement ratio at 1:1 for all removed trees, however, the project
alignment does not support any trees within the road rights-of-way, if it is determined that any trees do
need to be removed as part of the project,the applicant will be required to adhere to City requirements
related to the removal and/or replacement of trees, including a pre-permit tree survey, which would
reduce the potential impact associated tree removal to a less than significant level.
IV.f No Impact. The project alignment is not located within a Habitat Conservation Plan or Natural
Community Conservation Plan. Figures NRC-1 and NRC-2 of the City of San Bernardino General Plan
indicates that project is not in a sensitive Biological Resource Area. In addition, the analysis in the
previous Sections IV.a through IV.c demonstrate the project will not have any significant impacts on
listed or otherwise sensitive species, including southwestern willow flycatcher, with implementation of
the recommended Mitigation Measures BIO-1 through BIO-3.
V. CULTURAL RESOURCES—Would the Potentially I.,ess,rhan Significant Less Than
project: Significant with Mitigation Significant
Impact Incor orated Impact No Impact
a) Be developed in a sensitive ❑ ® ❑ ❑
archaeological area as identified in the
City's General Plan?
b) Cause a substantial adverse change in the ❑ ® ❑ ❑
significance of an archaeological
resource as defined in CEQA Section
1 5064.5?
c) Cause a substantial adverse change in the ❑ ® ❑ ❑
significance of a historic resource
pursuant to CEQA Section 15064.5?
d) Directly or indirectly destroy a unique ❑ ® ❑ ❑
paleontological resource or site unique to
geologic feature?
City of San Bernardino Municipal Code,Section 15.34
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Potentially Less Than Significant Less Than
V. CULTURAL RESOURCES—Would the Significant with Mitigation Significant
project: —Impact._ Incorporated impact_ No impact
e) Disturb any human remains, including ❑ ❑ ® ❑
those interred outside formal cemeteries?
Discussion
V.a-b Less than Significant Impact with Mitigation.The site is not designated as a sensitive archaeological
area in the City's General Plan or General Plan EIR.1 LSA Associates, Inc. (LSA) conducted a brief
walk-over of the project alignment and determined it has been completely disturbed by past human
activity and is covered over with improved structures (i.e., flood channel slope and public roadways).
Therefore,construction of the project will not impact any identified archaeological resources.However,
it is still possible that artifacts or other cultural resources could be found during excavation due to the
depth of disturbance anticipated,so the following mitigation measure is proposed:
CUL-I If cultural resources (archaeologic or historic) are discovered during project excavation
activities, a qualified archaeologist and/or historian shall be retained to assess the nature and
significance of the find,diverting construction excavation if necessary.The archaeologist and/or
historian shall have the authority to redirect ground-disturbing activities in the vicinity of the
find until the nature and extent of the find can be evaluated. Any such resource uncovered
during the course of project-related grading shall be recorded and/or removed per applicable
guidelines, in consultation and cooperation with San Bernardino County Museum staff and
appropriate Native American tribal representatives or the County Historical Society.
With implementation of the recommended mitigation, the potential impacts to archaeological and
historical resources are reduced to less than significant levels.
V.c Less than Significant Impact with Mitigation.A"historic resource"includes,but is not limited to any
object, building, site, area, place, record, or manuscript that is historically or archaeologically
significant, or is significant in the architectural, engineering, scientific, economic, agricultural,
educational, social, political, military, or cultural annals of California.' CEQA mandates that Lead
Agencies consider a resource to be "historically significant" if it meets the criteria for listing in the
California Register of Historical Resources(California Register). Such resources meet this requirement
of
if they are(1)Associated with events that have made a significant contribution to the broad sated with
local or regional history or the cultural heritage of California or the United States, ( ) road
the lives of persons important to local, California or national history, (3) Embodies the distinctive
characteristics of a type,period,region or method of construction or represents the work of a master or
possesses high artistic values,and/or(4)Has yielded,or has the potential to yield,information important
to the prehistory or history of the local area,California or the nation.
LSA Associates, Inc. (LSA) conducted a brief walk-over of the project alignment and determined there
are no structures, potentially historic or otherwise, within the project boundaries, and project
construction will not impact any of the existing residences adjacent to the project alignment. It is still
possible that historical artifacts could be found during excavation due to the depth of disturbance
Figure 5.4.2,Section 5 Paleontological Resources, City of San Bernardino General Plan Update&Associated Specific Plans FIR,
The Planning Center,July 2005.
Z Public Resources Code,Section 5020.16).
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anticipated,but implementation of Mitigation Measure CUL-I will help assure that the project would
not result in any significant impacts to historic resources,and not additional mitigation is required.
V.d Less than Significant with Mitigation. The City of San Bernardino General Plan does not directly
address paleontological resources. This portion of the San Bernardino Valley is underlain by deep
alluvial deposits, in places hundreds of feet thick. Under these conditions, it is unlikely that shallow
grading would uncover any fossiliferous materials. In addition, the project alignment has been
previously disturbed by construction of flood control and roadway improvements. However, there is at
least a possibility that trenching to a depth of 25 feet or more may uncover paleontological resources, so
adherence to Mitigation Measure CUL-2 would reduce the potential impact on unknown paleontological
resources to a less than significant level:
CUL-2 If paleontological resources are discovered during grading, a qualified paleontologist will be
retained to evaluate the resource and then monitor the remaining ground-disturbing activities.
The qualified paleontologist shall have the authority to redirect ground-disturbing activities in
the vicinity of the find until the nature and extent of the find can be evaluated. Any such
resource uncovered during the course of project-related grading shall be recorded and/or
removed per applicable guidelines,in consultation and cooperation with San Bernardino County
Museum staff. Any recovery activity shall be consistent with applicable City and/or State
regulations.
V.e Less than Significant Impact. No evidence is in place to suggest the project alignment has been used
for human burials.The California Health and Safety Code(Section 7050.5)states that if human remains
are discovered on site, no further disturbance shall occur until the County Coroner has made a
determination of origin and disposition pursuant to Public Resources Code Section 5097.98. If human
remains are encountered,State Health and Safety Code Section 7050.5 states that no further disturbance
shall occur until the County Coroner has made a determination of origin and disposition pursuant to
PRC Section 5097.98. The County Coroner must be notified of the find immediately. If the remains are
determined to be prehistoric, the Coroner will notify the Native American Heritage Commission
(NAFIC), which will determine and notify a Most Likely Descendant (MLD). With the permission of
the landowner or his/her authorized representative,the MLD may inspect the site of the discovery. The
MLD shall complete the inspection within 48 hours of notification by the NAHC. The MLD may
recommend scientific removal and nondestructive analysis of human remains and items associated with
Native American burials. Adherence to State regulations will ensure that proposed impacts will be less
than significant and no mitigation is required.
VI. GEOLOGY AND SOILS—Would the Potentially Less Than Significant Less Than
project: Significant with Mitigation Significant
Im act
Incorporated Impact No Impact
a) Involve earth movement (cut and/or fill) Fl ® []
based on information contained in the
Preliminary Project Description?
b) Expose people or structures to substantial
adverse effects,including the risk of loss,
injury,or death?
c) Be located within and Alquist-Priolo [] El
Earthquake Fault Zone?
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VI. GEOLOGY AND SOILS—Would the Potentially less Than Significant Less Than
project: Significant with Mitigation Significant
P ro J —impact Incorporated Impact No Impact
d) Result in erosion, dust or the loss of ❑ ® ❑ ❑
topsoil?
e) Be located within an area subject to ❑ ® ❑ ❑
landslides, mudslides, subsidence, or
other similar hazards as identified in the
City's General Plan?
f) Be located within an area subject to ❑ ® ❑ ❑
liquefaction as identified in the City's
General Plan?
g) Modify any unique geological or ❑ ❑ ❑
physical feature based on a site survey/
evaluation?
h) Result in erosion, dust, or unstable soil ❑ ® ❑ ❑
conditions from excavation, grading, fill,
or other construction activities?
i) Other: Development within Hillside ❑ ❑ ❑
Management District on slopes in excess
of 15 percent.
Discussion
VI.a Less than Significant Impact with Mitigation. Implementation of the proposed project would require
on-site excavation which is expected to be balanced on site (i.e., removed soil will be stockpiled then
replaced and compacted once the new flood control improvements are installed). Although not
expected, there may have to be a minor amount of imported fill for overexcavation or replacement of
any unconsolidated fill if any is discovered during grading. The import or export of earth would be
subject to haul permits issued by the City. Prior to approval of improvement plans and the issuance of a
grading permit, the project proponent would be required to prepare and submit a detailed grading plan
for planned improvements.These plans must be prepared in conformance with the applicable standards
of the City's Grading Ordinance and the California Building Code (CBC). Adherence to the
requirements of the City's Grading Ordinance, CBC, specific flood control improvement design
measures identified in a project-specific geotechnical investigation, and conditions set forth in the
grading permit(including any necessary export requirements and haul permits)are required prior to the
commencement of on-site clearing and grading activities. In addition,the following mitigation has been
identified to reduce impacts related to these issues to a less than significant level.
GEO-1 Prior to the issuance of improvement plans or a grading permit, the project proponent shall
demonstrate to the City that the siting, design and construction of all flood control structures
within the project limits comply with onsite soil investigations, applicable regulations of the
California Building Code, as well as the recommendations identified in any project-specific
geotechnical investigation based on actual improvement design, including the potential for
subsidence and liquefaction.
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With implementation of Mitigation Measures GEO-1, HYD-1 and HYD-2, potential earth- and erosion-
related impacts would be reduced to less than significant levels,and no additional mitigation measures would be
required.
VI.b—c No Impact. Fault rupture is the most easily avoided seismic hazard. The Alquist-Priolo Earthquake
Fault Zoning Act(A-P Act)mitigates fault rupture hazards by prohibiting the location of structures for
human occupancy across the trace of an active fault. The A-P Act requires the State Geologist to
delineate "Earthquake Fault Zones" along faults that are "sufficiently active" and"well defined." The
boundary of an"Earthquake Fault Zone"is generally 500 feet from major active faults and from 200 to
300 feet from well-defined minor faults. The mapping of active faults has been completed by the State
Geologist. These maps are distributed to all affected cities, counties,and State agencies for their use in
developing planning policies and controlling renovation or new construction.
As identified in the City's General Plan,the project alignment is not located within the boundaries of an
earthquake fault zone for fault-rupture hazard as defined by the Alquist-Priolo Earthquake Fault Zoning
Act.' Although no active traces of fault have been identified within the project limits,the City is situated
in a seismically active area. Ground shaking is expected to be the primary hazard likely to affect the
project. The project does not propose to construct any occupied structures on or near fault structures,so
there is no impact and no mitigation is required.
VIA Less than Significant Impact with Mitigation. Erosion of soil could occur through being located in a
high wind area or through construction activities exposing areas to precipitation and water erosion.
Based on the City's General Plan, the project alignment is not identified as being located in an area
susceptible to high winds.' Development would require the movement of on-site soils, although no
substantial import of fill material is expected. Prior to the issuance of improvement plans or a grading
permit, the project proponent would be required to prepare and submit a detailed grading plan for the
project improvements in conformance with applicable standards of the City's Grading Ordinance.
Development of the site would involve more than one acre;therefore,the proposed project is required to
obtain a National Pollutant Discharge Elimination System (NPDES) permit. A Storm Water Pollution
Prevention Plan (SWPPP)would also be required to address erosion and discharge impacts associated
with the proposed on-site grading. In addition to preparation of an SWPPP, new development projects
submitted to the City are required to submit a project-specific Water Quality Management Plan
(WQMP). The WQMP identifies specific measures to treat and/or limit the entry of contaminants into
the storm drain system. The WQMP is required to be incorporated by reference or attached to the
project's SWPPP as the Post-Construction Management Plan. Soils covering the majority of the project
alignment have a slight to moderate erosion hazard potential, but any imported fill material would have
to be approved by the City based on recommendations from a qualified soils engineering firm. The
project would be required to adhere to the City's Grading Ordinance, obtain an NPDES Permit, and
prepare an SWPPP for construction and operational impacts associated with soil erosion hazards. The
project area will be under sequential construction for an extended period of time,and there may be times
when no construction is occurring, so the SWPPP and WQMP will need to address this extended
construction period. With implementation of these standard City development requirements, plus
Mitigation Measures HYD-1 and HYD-2 in the hydrology section, potential erosion impacts will be
reduced to less than significant levels and no additional mitigation is necessary.
Figure S-3 Alquist-Priolo Study Zones,City of San Bernardino General Plan,November 2005.
Figure S-8 Wind Hazards,City of San Bernardino General Plan,November 2005.
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VI.e Less than Significant Impact with Mitigation. The topography of the site is generally flat and does
not present any significant topographical features that would result in any landslide occurrences. Based
on the City's General Plan, the project alignment it not located within an area susceptible to landslide
activity.' No landslide impact would result from the development of the proposed on-site uses.
The project alignment is identified by the City as being within an area of potential ground subsidence.Z
However,adherence to Mitigation Measure GEO-1 will help reduce potential impacts associated with
this issue to a less than significant level,and no additional mitigation is required.
Vl.f Less than Significant Impact with Mitigation.Liquefaction is a phenomenon that occurs when strong
earthquake shaking causes soils to collapse from a sudden loss of cohesion and undergo a
transformation from a solid to a liquefied state. Factors influencing a site's potential for liquefaction
include area seismicity, the type and characteristics of on-site soils, and the level of groundwater.
Liquefaction typically occurs in areas where groundwater is shallower than approximately 50 feet, and
where there is the presence of loose, sandy soils. According to the City's General Plan, the project
alignment is within an area that has a high potential for liquefaction.' Adherence to Mitigation
Measure GEO-1 would reduce the potential impact in this regard to a less than significant level.
VI.g No Impact.The project alignment is located south of the foothills of the San Bernardino Mountains in a
primarily flat area. The project is relatively flat and is typical of property in the project vicinity. As no
unique or physical, geologic,or topographic feature is located within the limits of the proposed project,
no impact associated with this issue is anticipated to occur and no mitigation measures are required.
VI.h Less than Significant Impact with Mitigation.Refer to Checklist Response VIA.
VI.i No Impact.The proposed project is not located within the City's Hillside Management Overlay District
(HMOD).Because the proposed project is not located in a hillside area,no impact related with this issue
would occur,and no mitigation is required.
t Figure S-7,Slope Stability and Major Landslides,City of San Bernardino General Plan,November 2005.
Z Figure S-6,Potential Subsidence Areas,City of San Bernardino General Plan,November 2005.
3 Figure S-5,Liquefaction Susceptibility,City of San Bernardino General Plan,November 2005.
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VII. HAZARDS AND MATERIALS— Potentially Less Than Significant Less Than
Would the project: Significant with Mitigation Significant
Impact Incorporated Impact No Impact
a) Create significant hazard to the public or El
the environment through routine transport,
use,or disposal of hazardous materials?
b) Create a significant hazard to the public or El ® E]
the environment through reasonably
foreseeable upset and accident conditions
involving the release of hazardous
material into the environment?
c) Emit hazardous emissions or handle El
hazardous or acutely hazardous materials,
substances, or waste within one-quarter
mile of an existing or proposed school?
d) Be located on a site which is included on a (�
list of hazardous materials sites compiled
pursuant to Government Code Section
65962.5 and, as a result, would it create a
significant hazard to the public or the
environment?
e) For a project located within an airport [] El
land use plan or, where such a plan has
not been adopted, within two miles of a
public airport or public use airport, would
the project result in a safety hazard for
people residing or working in the project
area?
f) Impair implementation of or physically
interfere with an emergency response plan
or emergency evacuation plan?
g) Expose people or structures to a significant
risk of loss, injury, or death involving
wildland fires, including where wildlands
are adjacent to urbanized areas or where
residences are intermixed with wildlands?
h) Other: Expose persons or property to El El
significant risk, injury, or death involving
high winds?
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Discussion
Vil.a Less than Significant Impact. The proposed project would result in the demolition of existing flood
control structures and the construction of a new flood control (pipelines and concrete box structures).
Potentially hazardous materials such as fuel, asphalt, paint products, lubricants, solvents, etc. may be
used on site during construction. The transport, use, and storage of hazardous materials during the
construction and operation of the site would be conducted in accordance with all applicable state and
federal laws. Compliance with all applicable laws and regulations would reduce the potential impact
associated with the routine transport, use, storage, or disposal of hazardous materials to a less than
significant level and no mitigation is required.
VII.b Less than Significant Impact with Mitigation. The Hazardous Materials Management Act(HMMA)
requires that businesses handling or storing certain amounts of hazardous materials prepare a Hazardous
Materials Business Emergency Plan (HMBEP), which includes an inventory of hazardous materials
stored on site (above specified quantities), an emergency response plan, and an employee training
program.An IIMBEP is a written set of procedures and information created to help minimize the effects
and extent of a release or threatened release of a hazardous material. The intent of the HMBEP is to
satisfy federal and state Community Right-to-Know laws and to provide detailed information for use by
emergency responders. However, the proposed project does not entail construction of any occupied
uses,only underground flood control improvements, so the requirements of the LIMA do not apply to
this project.However, it is possible that contaminated soils or other hazards might be uncovered during
excavation, or spills of hazardous materials may occur during construction. Therefore, the following
mitigation measure is proposed:
HAZ-1 During excavation, the contractor shall notify the City immediately in the event malodorous or
discolored soils,liquids,containers,or other materials known or suspected to contain hazardous
materials and/or contaminants are encountered or spills of hazardous materials occur during on-
site demolition/grading/construction.Earthmoving activities in the vicinity of said material shall
be halted until the extent and nature of the suspect material is determined by qualified
personnel, as determined by the City. The removal and/or disposal of any such contaminants
shall be in accordance with all applicable local,state,and federal standards.
Adherence to this measure will reduce the potential impact of unexpected release of hazardous materials to a
less than significant level.
VII.c No Impact.The nearest existing school to the project alignment is Burbank Elementary School which is
located at 198 W. Mill Street approximately 0.8 mile north of the project alignment, so there are no
existing or proposed schools located within a quarter mile of the project alignment. In the absence of an
existing or proposed school within a quarter mile of the project alignment, no impact would occur,and
no mitigation is required.
VII.d No Impact. The Department of Toxic Substance Control (DTSC), which designates the sites for the
Hazardous Waste and Substance Site(Cortese) List', does not indicate any underground storage tanks,
hazardous waste generators, landfills, or other potentially hazardous materials located on the project
' From the State Department of Toxic Substances Control(DTSC)website reference below
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alignment. The project alignment and adjacent properties were not listed in any of the databases
searched,including the Cortese list'. Therefore,there are no impacts and no mitigation is required
VII.e No Impact. The San Bernardino International Airport (SBIA) is located approximately 0.85 mile
northeast of the project alignment at its closest point. As identified in the City's General Plan, the
project alignment is located within the San Bernardino International Airport Influence Area.Z The
Airport Land Use Plan (ALUP) for the SBIA has yet to be adopted; therefore, there is not an adopted
ALUP in place. However, the project does not include any new land uses, only underground flood
control improvements.Therefore,the project would not have any significant impacts on the airport,and
no mitigation is required.
Vlt.f Less than Significant Impact with Mitigation. The proposed project does not involve any new land
uses or above-ground improvements. Access to and through the project area may be temporarily
affected by project construction activities, so the City will require the applicant to maintain adequate
emergency access during construction through implementation of the following mitigation measure:
HAZ-2 During all phases of project construction, the contractor shall maintain adequate emergency
access along Orange Show Road, Lena Road(also referred to as South Valley View Avenue),
and any feeder roads off these project roads within the project area. This measure shall be
implemented to the satisfaction of the City Engineer.
VII.g No Impact. The City has identified a Fire Overlay District (FOD) to mitigate the spread of fire, to
minimize property damage, and to reduce the risk to public health and safety. The fire hazard within
each zone varies based on slope, type of fuel present, and natural barriers. As identified in the City's
General Plan, the project alignment is not located in a fire hazard area'and the project does not propose
any new land uses. Therefore. no impacts associated with this issue are anticipated to occur, and no
mitigation is required.
VII.h No Impact. The City has periodic,extremely high winds, which have in the past resulted in significant
property damage, including roof and block wall damage, damaged power lines and traffic signals, and
downed trees. The most significant wind problems occur at the mouths of canyons and valleys
extending downslope from the San Bernardino Mountains. As identified in the City's General Plan,the
project alignment is not located within a "High Wind Area.A Since the project alignment is not within
an identified high wind area,and proposes no above-ground improvements that could be subject to high
winds,no impacts associated with this issue are anticipated to occur and no mitigation is required.
http;Hwww.envirostor.dtsc.ca.gov/public/
City of San Bernardino General Plan Figure LU-4,City of San Bernardino,November 1,2005,
Figure S-9:Fire Hazard Area,City of San Bernardino General Plan,November 2005.
a Figure S-A:High Wind Area,City of San Bernardino General Plan,November 2005.
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VIII. HYDROLOGY AND WATER Potentially Less Than Significant Less Than
QUALITY—Would the project: Significant with Mitigation Significant
Impact Incorporated Im act No Im act
a) Violate any water quality standards or ❑ ® ❑ ❑
waste discharge requirements?
b) Substantially deplete groundwater supplies ❑ ❑ ❑
or interfere substantially with groundwater
recharge such that there would be a net
deficit in aquifer volume or a lowering of
the local groundwater table level (e.g., the
production rate of pre-existing nearby
wells would drop to a level that would not
support existing land uses or planned uses
for which permits have been granted)?
c) Substantially alter the existing drainage ❑ ❑ ® ❑
pattern of the site or area, including
through the alteration of the course of a
stream or river, in a manner, which would
result in substantial erosion or siltation on
site or off site during construction?
d) Substantially alter the existing drainage ❑ ❑ ® ❑
pattern of the site or area, including
through the alteration of the course of a
stream or river, or substantially increase
the rate or amount of surface runoff in a
manner,which would result in flooding on
site or off site?
e) Create or contribute runoff water that ❑ ❑ ® ❑
would exceed the capacity of existing or
planned stormwater drainage systems or
provide substantial additional sources of
post-construction polluted runoff, such as
from areas of material storage, vehicle or
equipment fueling, vehicle or equipment
maintenance (including washing), waste
handling, hazardous materials handling or
storage, delivery areas, loading docks, or
other outdoor areas?
f) Otherwise substantially degrade water ❑ ® ❑ ❑
quality or beneficial uses?
g) Place within a 100-year flood hazard area ❑ ❑ ® ❑
structures that would impede or redirect
flood flows?
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Vlll. HYDROLOGY AND WATER Potentially Less Than Significant Less Than
QUALITY—Would the project: Significant with Mitigation Significant
A� _,_Impact__ Incorporated __Impact No Im act
h) Expose people or structures to a significant El
risk of loss, injury, or death involving
flooding as a result of a levee or dam?
i) Expose people or property to inundation by
seiche,tsunami,or iuudflow?
Discussion
VIII.a Less than Significant Impact with Mitigation. Construction of the proposed development will require
excavation which may allow eroded soils and other pollutants to enter the storm drain system. Pollutants
such as sediment, nutrients, heavy metals, toxic organics, trash and debris, and contaminants may be
conveyed by storm runoff of impermeable surfaces (e.g., streets). The City implements National
Pollutant Discharge Elimination System (NPDES) requirements for surface water discharge for all
qualifying activities,including the proposed project.The site is already fully developed with impervious
surfaces, and the project alignment will return to that condition after project construction. However,
development of the project alignment is in excess of one acre;therefore,the project is required to obtain
coverage under an NPDES permit,which includes the submittal of a Notice of Intent(NOI)application
to the State Water Resources Control Board(SWRCB),the receipt of a Waste Discharge Identification
Number(WDIN) from SWRCB, and the preparation of an SWPPP for construction discharges. During
the construction period,the project would use a series of Best Management Practices(BMPs)to reduce
erosion and sedimentation. These measures may include the use of gravel bags, silt fences, hay bales,
check dams,hydroseed, and soil binders. The construction contractor would be required to operate and
maintain these controls throughout the duration of on-site activities. In addition, the construction
contractor would be required to maintain an inspection log and have the log on site to be reviewed by
the City and representatives of the RWQCB.
The implementation of NPDES permits ensures that the state's mandatory standards for the maintenance
of clean water and the federal minimums are met. Coverage with the permit would prevent
sedimentation and soil erosion through implementation of an SWPPP and periodic inspections by
RWQCB staff. An SWPPP is a written document that describes the construction operator's activities to
comply with the requirements in the NPDES permit. The SWPPP is intended to facilitate a process
whereby the operator evaluates potential pollutant sources at the site and selects and implements BMPs
designed to prevent or control the discharge of pollutants in stormwater runoff.
Construction of the project alignment would require the demolition of the existing on-site structures and
disturbance of underlying soils. During the construction period,grading and excavation activities would
result in exposure of soil to storm runoff, potentially causing erosion and sediment in runoff. If not
managed through BMPs, the runoff could cause erosion and increased sedimentation in local drainage
ways. By volume, sediment is the principal component in most storm runoff. Sediments also transport
substances such as nutrients, hydrocarbons, and trace metals, which are conveyed to the receiving
waters. The potential for chemical releases is present at most construction sites in the form of fuels,
solvents, glues, paints, and other building construction materials. Once released, substances such as
fuels,oils,paints,and solvents could be transported to nearby surface waterways and/or to groundwater
in stormwater runoff, wash water, and dust control water, potentially reducing the quality of the
receiving waters and potentially result in impairment of downstream water sources.
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The NPDES permit program was established under Section 402 of the Clean Water Act,which prohibits
the unauthorized discharge of pollutants, including municipal, commercial, and industrial wastewater
discharges. An NPDES permit would generally specify an acceptable level of a pollutant or pollutant
parameter in a discharge (for example, a certain level of bacteria). The permittee may choose which
technologies to use to achieve that level. Some permits, however, do contain certain generic BMPs.
Table F lists BMPs for runoff control, sediment control, erosion control, and housekeeping that may be
used during the construction of the proposed project.
Table F—General Best Management Practices
Runoff Control Sediment Control Erosion Control Good Housekeeping
• Minimize clearing • Install perimeter Stabilize exposed soils 0 Create waste collection
• Preserve natural
controls . Protect steep slopes area
vegetation a Install sediment Complete construction in • Put lids on containers
Stabilize drainage trapping devices • phases 0 Clean up spills
• ways . Inlet protection I immediately
Source: National Pollutant Discharge Elimination System, Construction Site Stone Water Runoff Control, http://cfpub epa gov/
npdes/stonnwater/menuofbmps/index efm,website accessed January 8,2015.More detailed Best Management Practices are available at this web
site
Adherence to NPDES requirements is required of all construction activities within the City. On-site
grading activities and the development of the proposed on-site uses would increase the potential for the
erosion of soils. However, adherence to the BMPs identified by the above mitigation measures would
reduce impacts associated with short-term stormwater discharges during project construction.Therefore,
impacts associated with this issue are reduced to a less than significant level.
The proposed project would not change the permanent drainage pattern of the project area, and will not
increase the overall amount of impermeable surfaces and thus would not alter the current drainage
pattern. During construction, storm runoff from the roadways may carry a variety of pollutants
including, but not limited to, trash, debris, oil and grease, organic compounds (specifically solvents),
metals,sediment/turbidity,nutrients,oxygen-demanding substances,and pesticides.
The implementation of the following pollution prevention and source control measures would reduce
potential water quality impacts during construction to less than significant levels:
HYD-1 Prior to the issuance of a grading permit,the project applicant shall file and obtain a Notice of
Intent(NOI)with the Regional Water Quality Control Board in order to be in compliance with
the State NPDES General Construction Storm Water Permit for discharge of surface runoff
associated with construction activities. Evidence that this has been obtained(i.e., a copy of the
Waste Discharger's Identification Number) shall be submitted to the City for coverage under
the NPDES General Construction Permit. The NOl shall address the potential for an extended
and discontinuous construction period based on funding availability.
HYD-2 Prior to the issuance of a grading, the project applicant shall submit to and receive approval
from the City of San Bernardino a Storm Water Pollution Prevention Plan (SWPPP). The
SWPPP shall include a surface water control plan and erosion control plan citing specific
measures to control on-site and off-site erosion during the entire grading and construction
period. In addition,the SWPPP shall emphasize structural and nonstructural Best Management
Practices(BMPs)to control sediment and non-visible discharges from the site.The SWPPP will
include inspection forms for routine monitoring of the site during construction phase to ensure
NPDES compliance and additional BMPs and erosion control measures will be documented in
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the SWPPP and utilized if necessary. The SWPPP shall address the potential for an extended
and discontinuous construction period based on funding availability. The SWPPP will be kept
on site for the entire duration of project construction and will be available to the local RWQCB
for inspection at any time. Some the BMPs to be implemented may include the following:
• Sediment discharges from the site may be controlled by the following:sandbags,silt fences,
straw wattles and temporary basins (if deemed necessary), and other discharge control
devices. The construction and condition of the BMPs will be periodically inspected during
construction and repairs will be made when necessary as required by the SWPPP.
• Materials that have the potential to contribute to non-visible pollutants to stormwater must
not be placed in drainage ways and must be contained, elevated, and placed in temporary
storage containment areas.
• All loose piles of soil, silt, clay, sand,debris, and other earthen material shall be protected
in a reasonable manner to eliminate any discharge from the site. Stockpiles will be
surrounded by silt fences and covered with plastic tarps.
• In addition, the construction contractor shall be responsible for performing and
documenting the application of BMPs identified in the SWPPP.Weekly inspections shall be
performed on sandbag barriers and other sediment control measures called for in the
SWPPP. Monthly reports and inspection logs shall be maintained by the Contractor and
reviewed by the City of San Bernardino and the representatives of the State Water
Resources Control Board. In the event that it is not feasible to implement specific BMPs,
the City of San Bernardino can make a determination that other BMPs will provide
equivalent or superior treatment either on or off site.
According to the Regional Water Quality Control Board's website1,neither Twin Creek nor this portion
of the Santa Ana River are considered 303(b)"Impacted Water Bodies".The closest 303(b)body is the
portion of the Santa Ana River approximately a mile downstream of the confluence of Twin Creek,
south of the I-10 Freeway. Therefore, potential runoff from the project alignment would not directly
discharge into any impaired water bodies. Adherence to Mitigation Measures HYDA and HYD-2 and
measures included in the SWPPP and NPDES permit would reduce potential water quality impacts to
less than significant levels,and no additional mitigation is required.
VIII.b No Impact. The project does not propose any new land uses and will result in the same amount of
impervious surfaces compared to existing conditions in the road portion of the project. Construction of
the channel portion of the project(i.e.,within the Twin Creek channel)will result in a small increase in
impervious surface along the east bank of the channel to provide additional protection from erosion
around the outlet structure (Previous Section 8 of the Project Description –page 2 – states maximum
disturbance will be 0.28 acre). Therefore,the project will have minimal impacts,regarding groundwater
supplies or quality,and no mitigation is required.
VIII.c-i Less than Significant Impact. The City of San Bernardino Public Works Division administers storm
drain and flood control facilities within the City.The storm drain system has been divided into sub-areas
within the City based upon the San Bernardino County Flood Control District's Comprehensive Storm
Drain Plans. The project is located within Storm Drain. Sub-Area 2, which corresponds to a portion of
Comprehensive Storm Drain Plan No. 7,which covers the northwesterly portion of the City.
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The proposed project is to replace existing undersized flood control improvements within Orange Show
Road and Lena Road, and the drainage outlet into Twin Creek at Orange Show Road. This is a public
benefit project that will improve flood control conditions. Approval of drainage features/improvements
are made through the plan check process. As part of this process, all drainage improvements would be
required to meet the City's development standards. Erosion, sedimentation, and siltation impacts are
adequately addressed through adherence to Mitigation Measures HYD-1 and HYD-2. Because the
project would improve flood protection for upstream land uses, impacts related to this issue are
anticipated to be less than significant with implementation of the recommended mitigation.
VIJI.e Less than Significant Impact. The presence of impermeable surfaces such as streets generally
increases the velocity and volume of surface runoff compared to native soils. As urban runoff flows
over streets,it carries off pollutants such as automobile oil and antifreeze,pesticides, animal waste,and
litter into the storm drain system. The storm drain system collects water from the streets and transports it
directly or indirectly to local water supplies and eventually the Pacific Ocean. Urban runoff from the
storm drains is typically not filtered or treated.
Federal environmental regulations based on the CWA require the control of pollutants from Municipal
Separate Storm Sewer Systems (MS4s), construction sites and industrial activities. MS4s include
drainage systems owned and maintained by the City of San Bernardino. Discharges from such sources
were brought within the NPDES permit process by the 1987 Clean Water Act amendments and the
subsequent 1990 promulgation of stormwater regulations by the U.S.Environmental Protection Agency.
Because the project proponent would be required to adhere to storm drainage requirements identified
within the NPDES permit process as well as provisions required by the City of San Bernardino, a less
than significant impact related to this issue is anticipated to occur with the implementation of the
proposed flood control project,and no mitigation is required.
VIII.f Less than Significant with Mitigation. Please refer to the Response to Checklist Response VIIIa. In
accordance with the construction NPDES permits and as monitored by the City, the project developer
would be required to implement BMPs during the construction of the proposed flood improvements.
Adherence to the mitigation measures HYD-1 and HYD-2, along with City-mandated water quality
requirements, will reduce the water-quality impact associated with this issue to a less than significant
level,and no additional mitigation is required.
VIII.g Less Than Significant Impact. The road portion of the proposed project is not located within an area
identified as being subject to flood hazards, either by the City of San Bernardino (Figure S-1 of the
General Plan)or the Federal Emergency Management Agency,' the proposed project would not impede
or redirect flood flows (i.e., FEMA data shows the Twin Creek Channel is Zone AF,with "base flood
elevations determined" and Orange Show Road and Lena Road are Zone A with "no base flood
elevations determined"). The channel-related improvements within Twin Creek are likely within a 100-
year flood zone, however, these are designed to prevent erosion of the surrounding bank and not to
impede flow within the channel. No impact related to this issue is anticipated to occur with the
implementation of the proposed project,and no mitigation is required.
VIII.h Less than Significant Impact. Flood control in the City provides an integrated approach for regional
and local drainage flows. This system includes debris basins, storm channels, and levees. The road
portion of the project is not located within a 100-year flood hazard area,but the channel portion of the
project (i.e., improvements within the Twin Creek channel) are within the 100-year flood zone
identified for the creek.The entire project area is within the 500-year flood hazard area and the potential
Flood Zones AE and A, FEMA Flood Insurance Rate Map Panel 8683H dated August 28, 2008 (map number 06071C8683h),
Federal Emergency Management Agency.
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inundation area of the Seven Oaks Dam.' Although the project alignment is within this potential
inundation area, occurrence of such an event is extremely remote. The dam has been engineered and
constructed with the knowledge that the area is seismically active.Due to the unlikely possibility of dam
failure,the potential impact related to this issue is less than significant and no mitigation is required.
VIII.i No Impact. The project alignment is not located near or adjacent to a lake or ocean;therefore,there is
no potential for inundation of the site by a seiche (a wave or oscillation of the surface of water in an
enclosed or semi-enclosed basin)or tsunami.Because the project is not in close proximity to any large,
enclosed bodies of water(e.g., ocean, lake, or river) and is generally flat with no nearby mountainous
areas, potential impacts resulting from tsunamis, seiches, or mudflows are not anticipated to occur. In
addition, the proposed flood control facilities are open at both ends and so would not create a new
potential seiche condition on their own. Therefore, no impacts associated with these issues will occur
and no mitigation is required.
IX. LAND USE AND PLANNING—Would Potentially Less Than Significant Less Than
the project: Significant with Mitigation Significant
Impact Incorporated orated Im act No Impact
a) Physically divide an established ❑ ❑ ❑
community?
b) Conflict with any applicable land use plan, ❑ ❑ ❑
policy, or regulation of an agency with
jurisdiction over the project(including,but
not limited to the general plan, specific
plan, local coastal program, or zoning
ordinance) adopted for the purpose of
avoiding or mitigating an environmental
effect?
c) Conflict with any applicable habitat ❑ ❑ ❑
conservation plan or natural community
conservation plan?
d) Be developed within the Hillside ❑ ❑ ❑
Management Overlay District?
e) Be developed with Foothill Fire Zones A ❑ ❑ ❑
and B, or C as identified in the City's
General Plan?
f) Be developed within the Airport Influence ❑ ❑ ® ❑
Area as adopted by the San Bernardino
International Airport Authority?
City of San Bernardino Draft General Plan,The Planning Center,October 2005,Figure S-2.
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Discussion
1X.a No Impact. The proposed project is located in an area that is predominantly low intensity industrial
with limited commercial uses, mainly along Waterman Avenue. There are scattered residential uses in
the project area along Orange Show Road and Lena Road. Surrounding lands are designated IL
(Industrial Light)and OIP(Office/Industrial Park).The proposed project would install new underground
flood control improvements, and so would not physically divide an established community, therefore,
there are no impacts and no mitigation is required.
IX.b No Impact. The applicable land use plan governing the project area is the City of San Bernardino
General Plan(City of San Bernardino 2005). Other applicable regional plans developed by the Southern
California Association of Governments (SCAG) include the Regional Comprehensive Plan [SCAG
2008b: (RCP)] and Regional Transportation Plan [SCAG 2008a: (RTP)]. The two public roads that are
part of the project alignment do not have any land use designations or zoning, while the Twin Creek
channel is designated Public Flood Control). The surrounding area is currently designated Industrial in
the General Plan and zoned IL (Light Industrial) and OIP (Office/Industrial Park) along Waterman
Avenue.The proposed project would not conflict with any General Plan and zoning designations.Based
on this information, the project is consistent with the General Plan and applicable regional plans,
therefore impacts in this regard are less than significant and no mitigation is required.
IX.c. No Impact. The project alignment is located in an urban area that is not within an established habitat
conservation plan or natural community conservation plan. As outlined in the previous Section IV, the
project area does not contain critical habitat, primary constituent elements, or suitable habitat for the
southwestern willow flycatcher or other listed or sensitive species.No impact associated with this issue
will occur,therefore,no mitigation is required.
IX.d No Impact. The project is not located within the City's Hillside Management Overlay District
(HMOD).As such,no impact associated with this issue will occur,and no mitigation is required.
IX.e No Impact. No portion of the proposed project is located within a Fire Zone' and the project would
only construct non-flammable underground storm drain improvements. Therefore, there would be no
impacts and no mitigation is required.
IX.f Less than Significant Impact.The proposed project alignment is located within the"Airport Influence
Area"for the San Bernardino International Airport(SBIA).The SBIA has identified"Airport Influence
Areas" in the areas surrounding airport property! The entire project alignment is located within the
Airport Influence Area Boundary. The Airport Land Use Plan (ALUP) for the (SBIA) has yet to be
adopted; therefore,there is not an adopted ALUP in place. Although the development of high-intensity
uses (such as outdoor stadiums) is restricted within this zone, the development of industrial uses and
related public infrastructure such as roads and flood control channels is allowed. The project does not
propose any new land uses, so project impacts would be less than significant. Since there will be no
above-ground structures,no mitigation is required.
General Plan Figure S-9"Fire Hazard Areas,"City of San Bernardino,November 2005.
2 Airport Influence Area,Runway(2416)Category D-VI(Map),San Bernardino International Airport Authority,December 4,2003.
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X. MINERAL RESOURCES—Would the Potentially Less Than Significant Less Than
project: Significant with Mitigation Significant
�_ Impact
Incorporated Impact No Impact
a) Result in the loss of availability of known ❑ ❑ ❑
mineral resource that would be of value to
the region and the residents of the state?
b) Result in the loss of locally important ❑ ❑ ❑
mineral resource recovery site delineated
on a local general plan or other land use?
c) Be located in a Mineral Resource Zone as [] ❑ ❑
adopted by the State Mining Geology
Board an identified in the City's General
Plan?
Discussion
X.a—c No Impact.Mineral extraction is an important component of San Bernardino's economy. According to
the General Plan,' the bulk of the construction aggregate is found in the natural sand and gravel deposits
of Cajon Wash,Lytle Creek, Warm Creek,City Creek,and the Santa Ana River. In 1975,the California
State legislature adopted the Surface Mining and Reclamation Act (SMARA). This designated certain
areas as Mineral Resources Zones(MRZs)that were of State-wide or regional importance. Several areas
within the San Bernardino region have been classified as MRZ-2, which indicates that there are
significant mineral deposits or that there is a likelihood of significant mineral deposits within these
areas.
The proposed project would not result in a loss of availability of known mineral resources that would be
of value to the region and the residents of the state, because the project alignment is not located within
an MRZ. The proposed project would also not result in the loss of a locally-important mineral resource
recovery site. No mineral extraction activities occur on site. Because of the size and location of the
project alignment,and the absence of any identified on-site mineral resource,development of the project
alignment would not result in the loss of availability of a known mineral resource or a locally important
mineral resource recovery site. No impact related to this issue would occur and no mitigation is
required.
City oJ'San Bernardino General Plan(November 2005).
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tentially Less Than Significant Less
Po Than
Significant with Mitigation Significant
XI. NOISE—Would the project result in: Impact Incorporated Impact No Impact
a) Exposure of persons or generation of ❑ ® ❑ ❑
noise levels in excess standards
established in the City's General Plan or
Development Code, or applicable
standards of other agencies?
b) Exposure of persons to or generation of ❑ ® ❑ ❑
excessive groundbome vibration or
groundbome noise levels?
c) A substantial permanent increase in ❑ ❑ ❑
ambient noise level in the project vicinity
above existing without the project`?
d) A substantial or periodic increase in ❑ ❑ ® ❑
ambient noise levels in the project vicinity
above existing without the project?
e) For a project located within an airport ❑ ❑ ❑
land use plan or Airport Influence area,
would the project expose people residing
or working in the project area to excessive
noise levels?
Discussion
Xl.a Less than Significant impact with Mitigation.The project alignment is located in an area of the City
that has existing scattered residences but is slowly developing with industrial uses. The City specifies
the maximum acceptable exterior community noise equivalent level (CNEL) for industrial uses in the
City shall not exceed 75 decibels (dB) while interior noise levels shall not exceed CNEL 72dB. The
CNEL is a 24-hour A-weighted average sound level from midnight to midnight obtained after the
addition of 5 decibels(dB)to sound levels occurring between 7:00 p.m.and 10:00 p.m.and 10 dB to the
sound levels occurring between 10:00 p.m. and 7:00 a.m.' The 5 dB and 10 dB penalties added to the
evening and nighttime hours account for the added sensitivity of humans to noise during these time
periods. Based on noise analyses prepared for similar projects, noise from construction equipment
typically generates approximately 68 dB at 100 feet from the area where it operates. if two pieces of
equipment are used, the "typical" construction noise measurements of the maximum hourly average
noise levels are expected to be approximately 72 dB at 100 feet from the point of origin. These noise
sources would decrease at a rate of 6 dB per doubling of distance; therefore, at 200 feet, construction
noise would decrease to 66 dB;at 400 feet,the noise would decrease to 60 dB;etc.
City of San Bernardino General Plan,Chapter 14,Noise Element,November I,2005.
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The nearest noise-sensitive uses to the proposed project are approximately sixteen existing
residences along the north side of Orange Show Road and along Lena Road. Table G shows the
estimated noise levels for various pieces of equipment that will likely be used on the proposed project
alignment.
Table G—Typical Maximum Construction Equipment Noise Levels(Lm„x)
Range of Maximum Sound Suggested Maximum Sound
Level Measured at 50 t Level for.AnalysisAt SO ft
Type of Equipment (dBA) (dBA)
Jackhammers 75-85 82
Pneumatic Tools 78-88 85
Pumps 74-84 80
Scrapers 83-91 87
Haul Trucks 83-94 88
Cranes 79-86 82
Portable Generators 71--87 80
Rollers 75-82 80
Dozers 77-90 85
Tractors 77-82 80
Front-End Loaders 77--90 86
Hydraulic Backhoes 81-90 86
Hydraulic Excavators 81-90 86
Graders 79-89 86
Air Compressors 76-89 86
Trucks 81-87 86
Source:Noise Control for Buildings and Manufacturing Plants,Boll,Beranek&Newnian,1987
dBA-A-weighted decibels ft=feet ft-lb/blow=foot-pounds per blow
Construction of the proposed project is expected to require the use of backhoes, dozers, and trucks.
Based on the Suggested Maximum Sound Level for Analysis at 50 feet (dBA) column in Table G, the
maximum noise level generated by scrapers is assumed to be 87 dBA L,,., at 50 feet. The maximum
noise level generated by this equipment is approximately 86 dBA L„max at 50 feet. Combined, these
activities occurring at the same time in the active construction area would result in approximately
91 dBA Lmax at a distance of 50 feet.
Existing residences in the vicinity of the project area may be subject to short-term, intermittent noise
generated by on-site tenant improvement activities. The closest residence in the vicinity of the project
area is located on the north side of Orange Show Road east of Waterman Avenue,approximately 40 feet
from the project boundary,that would be subject to short-term noise reaching 91 dBA Ln.,,generated by
construction activities near the southern boundary of the project alignment.To prevent significant short-
term noise levels at local residences,construction on the project alignment will need to be limited to the
City's permitted work hours, which are between the hours of 7:00 a.m. and 10:00 p.m. on weekdays and
weekends. In addition, the following measure is proposed to help assure local residents will not
experience significant noise impacts during construction:
N01-1 During any project construction work within 200 feet of an existing residential property,
temporary noise reduction fencing shall be installed around the project work area or within the
City right-of-way adjacent to the affected residential property or properties for the duration of
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construction in that area.The fencing shall be constructed of plywood with a total thickness of 1
to 1.5 inches,or a sound blanket wall may be used.if sound blankets are used,they must have a
Sound Transmission Class(STC)rating of 27 or better.
Based on the nature of the project,there will be essentially no long-term noise impacts other than from
occasional channel maintenance vehicles and activities. As long as project activities are limited to the
hours and other requirements of the City's Noise Ordinance, and Mitigation Measure NOI-1 is
implemented as recommended,there will be no noise significant impacts during construction.
Xl.b Less than Significant Impact with Mitigation. Vibration refers to groundborne noise and perceptible
motion. As with noise, ground vibrations can be described by amplitude and frequency. Vibration
amplitude is characterized by its displacement, velocity, and acceleration. Displacement is the distance
that soil particles travel from their original location as a result of vibration, as measured in inches or
millimeters. Velocity is the speed of the soil particles measured in inches per second or millimeters per
second.Acceleration is the acceleration of the soil particles measured in inches per second per second or
millimeters per second per second. Particle velocity is the most commonly used vibration attribute used
to describe vibration. Table I1 presents the human reaction to various levels of peak particle velocity.
Vibrations also vary in frequency. Traffic vibrations generally range in frequencies from 10 to 30 hertz
(Hz), and tend to average around 15 Hz. As a point of reference, city buses often generate frequencies
around 3 Hz at high vehicle speeds,due to their suspension systems.
Table H: Human Reaction to Typical Vibration Levels
Vibration Level Peak
Particle Velocity
(inches/second) Human Reaction
0.0059-0.0188 Threshold of perception,possibility of intrusion.
0.0787 Vibrations readily perceptible.
0.0984 Level at which continuous vibrations begin to annoy people.
0.1968 Vibrations annoying to people in buildings.
0.3937-0.5905 Vibrations considered unpleasant by people subjected to
continuous vibrations and unacceptable to some people walking
on bridges.
Source:Caltrans 1992.
Groundbome vibration is almost exclusively a concern inside buildings and is rarely perceived as a
problem outdoors, where the motion may be discernable but without the effect associated with the
shaking of a building there is less of a reaction. Typical sources of groundborne vibration are heavier
construction activities (e.g., blasting, pile driving, and operating heavy duty earthmoving equipment),
steel-wheeled trains, and occasional traffic on rough roads. In this case, most of the construction
activities will be less intense so the potential vibration impacts would be correspondingly less. Problems
with groundborne vibration and noise from these sources are usually localized to areas within about 100
feet from the vibration source. When roadways are smooth,vibration from traffic, even heavy trucks,is
rarely perceptible. It is assumed for this project that the roadway surface would be smooth enough that
groundborne vibration from street traffic would not exceed the impact criteria. However,trenching and
sub-surface construction proximate to any of the 16 existing residences along the project area may result
in increased vibration impacts when construction is in the vicinity of the residences, especially those
closest to Orange Show Road or Lena Road. Any groundborne noise or vibration would be short-term
and occur only intermittently during grading and construction of the proposed facilities. however, the
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following measure is proposed to help assure that local residents do not experience significant vibration
impacts:
NOI-2 During trenching within 200 feet of an existing residential property, vibration levels will be
regularly measured at the closest adjacent residential property line to assure vibration levels do
not exceed 0.2 inches per second which, according to Caltrans,is the level at which continuous
vibrations are annoying to people in buildings. If project-related vibrations exceed this threshold
for more than one continuous hour on a given day,or intermittently for over a four-hour period
of time on a given day,alternative less intense construction methods shall be implemented(e.g.,
using smaller equipment or using larger equipment for shorter periods of time, etc.)to achieve
the indicated performance standard.This measure shall be implemented to the satisfaction of the
City Engineer and only where project construction is within 200 feet of an existing residence
along the street portion of the project.
XI.c No Impact. The project proposes no new land uses and so would not introduce additional residents or
workers into the area on a long-term basis. The project improvements will not create any new noise so
ambient noise levels will remain the same after project implementation. Therefore, there is no impact
and no mitigation is required.
XI.d Less than Significant Impact. The addition of the proposed project to the project area, which is
primarily industrial with scattered residential uses, would temporarily increase noise levels over those
that currently exists as a result of construction activities. During the construction phase of the project
there would be a temporary increase in noise levels that would be reduced by compliance with the
City's Noise Ordinance (Chapter 8.54 of the Municipal Code). With that, impacts would be less than
significant and no mitigation is required.
XI.e No Impact.The nearest airport to the project alignment is San Bernardino International Airport(SBIA),
located approximately 0.85 mile to the east at its closest point. As indicated in the City of San
Bernardino's General Plan(Figure LU-4),the project alignment is not located within the SBIA's noise
contours identified for this air facility. The project would not add any occupied uses or tall above-
ground structures that would interfere with activities at the airport, and would not introduce new
residents or employees into the project area.Therefore,there is no impact and no mitigation is required.
XII. POPULATION AND HOUSING— Potentially Less Than Significant Less Than
Would the project: Significant with Mitigation Significant
Impact Incorporated Impact No Impact
a) Induce substantial growth in an area either [] []
directly (e.g., by proposing new homes
and businesses)or indirectly(e.g.,through
extension of roads or other
infrastructure?)
b) Remove existing housing and displace
substantial numbers of people,
necessitating the construction of
replacement housing elsewhere?
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Discussion
XII.a—b No Impact. The proposed project would construct only underground flood control improvements, and
would not create any new land uses that would generate new population, residences, or employment.
Therefore,the project would have no population or housing impacts,and no mitigation is required.
XIII. PUBLIC SERVICES—Would the Potentially Less Than Significant Less Than
Significant with Mitigation Significant
project: Impact Incorporated Impact I No Im act
a) Result in substantial adverse physical impacts associated with the provision of new or physically altered
governmental facilities, the construction of which could cause significant environmental impacts, in
order to maintain acceptable service rations,response times, or other performance objectives for any of
the public services?
Fire protection,including medical aid? ❑ ❑ ® ❑
Police protection? ❑ ❑ ® El
Schools? ❑ ❑ ❑
Parks or other recreational facilities? ❑ ❑ D
Other governmental services? ❑ ❑ ❑
Discussion
XIII.a Less Than Significant Impact. The proposed project would construct underground flood control
improvements,and would not create any new land uses that would generate new population,residences,or
employment that would require increased levels of public services. It is possible the expanded flood
control facilities may require incrementally more maintenance compared to the existing facilities,
however,the project is not expected to create any significant impacts relative to public services in terms of
maintenance or public trespassing. It is also possible that construction could temporarily impact
emergency access,but Mitigation Measure HAZ-2 previously proposed in section VIIX(hazards)will help
assure the project area will have adequate emergency access during project construction. Therefore, no
additional mitigation is required.
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Potentially Less Than Significant Less Than
XIV. RECREATION—Would the project: Significant with Mitigation Significant
Impact Incorporated Impact No Impact
a) Increase the demand for neighborhood or ❑ ❑ ❑
regional parks or other recreational
facilities?
b) Include recreational facilities or require ❑ ❑ ❑
the construction or expansion of
recreational facilities, which might have
an adverse physical effect on the
environment?
Discussion
XIV.a—b No Impact.The proposed project would construct underground flood control improvements,and would
not create any new land uses that would generate new population,residences,or employment that would
require increased or additional park/recreation services. The project would not create any significant
impacts relative to recreation,and no mitigation is required.
XV. TRANSPORTATION/CIRCULATION Potentially Less Than Significant Less'rhan
—Would the project: Significant with Mitigation Significant
Impact Incorporated Impact No Impact
a) Conflict with an applicable plan, [] ❑ ❑
ordinance or policy establishing measures
of effectiveness for the performance of the
circulation system, taking into account all
modes of transportation including mass
transit and non-motorized travel and
relevant components of the circulation
system, including but not limited to
intersections, streets, highways, and
freeways, pedestrian and bicycle paths,
and mass transit?
b) Conflict with an applicable congestion ❑ ❑ ❑
management program, including, but not
limited to level of service standards and
travel demand measures, or other
standards established by the county
congestion management agency for
designated roads or highways?
c) Result in a change in air traffic patterns, _ ❑ ❑ ❑
including an increase in traffic levels or a
change in location that results in
substantial risks?
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Potentially Less Than Significant Less Than
XV. TRANSPORTATION/CIRCULATION Significant with Mitigation Significant
—Would the project: — Impact Incorporated ___!E pact No Impact.
d) Substantially increase hazards due to ❑ ® ❑ ❑
design feature (e.g., sharp curves of
dangerous intersections) or incompatible
uses(e.g.,farm equipment)?
e) Result in inadequate emergency access? ❑ ® ❑ ❑
f) Conflict with adopted policies, plans, or ❑ ® ❑ ❑
programs regarding public transit,bicycle,
or pedestrian facilities, or otherwise
decrease performance or safety of-such
facilities?
Discussion:
XV.a–b No Impact.The proposed project would construct only underground flood control improvements, and
would not create any new land uses that would generate new population,residences,or employment that
would in turn generate additional traffic on city streets. During construction,there will be some amount
of traffic during peak hours as workers drive to and from the site,but overall traffic volumes would be
relatively low given the modest intensity of the proposed construction activities. Once the project is
complete,there may be occasional vehicular trips related to maintenance activities.However,the project
is not expected to create any significant traffic impacts,and no mitigation is required.
XV.c No Impact.The nearest airport to the project alignment is San Bernardino International Airport,located
approximately 0.85 mile northeast of the project alignment at its closest point. While the project
alignment is located within the airport influence area of the SBIA,the nature and type of development
proposed for the project alignment would not impact the frequency or pattern of air traffic at San
Bernardino International Airport as it is a compatible use. Therefore,there would be no impact and no
mitigation is required.
XV.d Less than Significant Impact with Mitigation.The project will not generate any significant amount of
additional traffic on City streets or increased road hazards over the long-term, but may result in
temporary traffic delays or rerouting of traffic during construction in certain portions of the project area.
Therefore,the following mitigation measure is proposed:
TRA-I Prior to construction of any street portion of the project, the prime contractor shall submit a
Construction Traffic Mitigation Plan to the City for review and approval. The Plan shall outline
how construction traffic, parking, non-vehicular access, and other localized impacts from
project work will minimize traffic impacts on Orange Show Road and Lena Road. The Plan
shall include signage, lane closures, use of signal persons, etc. to help reduce potential traffic
impacts from project construction.This measure shall be implemented to the satisfaction of the
City Engineer.
In addition to TRA-1, the previous section Vll.f recommended Mitigation Measure HAZ-2 which will
help assure the project area will have adequate emergency access during all phases of project
construction. As long as adequate safety and traffic control precautions are taken, there should be no
significant impacts related to roadway hazards, and no additional mitigation is required(see Item XV.e
below regarding City access control measures).
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XV.e. Less than Significant Impact with Mitigation. The previous section XV.d recommended Mitigation
Measure TRA-1 which requires a Construction Traffic Mitigation Plan, and the previous section VII.f
recommended Mitigation Measure HAZ-2 which requires the project to maintain adequate emergency
access during construction. The design, construction(or reconstruction), and maintenance of structure,
roadways, and facilities must also comply with applicable City standards related to emergency access
and evacuation plans. Any construction activity that may temporarily restrict vehicular traffic would be
required to implement adequate and appropriate measures to facilitate the passage of persons and
vehicles through/around any required road closures. Adherence to the recommended mitigation
measures and applicable City access control measures would reduce the potential impact related to this
issue to a less than significant level,and no additional mitigation is required.
XV.f Less than Significant Impact with Mitigation. As described above,the proposed project will not add
new land uses or generate new residents or employees who would need non-vehicular transportation
services or improvements. Project construction may temporarily restrict vehicular and non-vehicular
access to the project area when work is being done along Orange Show Road or Lena Road. However,
the previous section XV.d recommended Mitigation Measure TRA-1 which requires a Construction
Traffic Mitigation Plan that includes non-vehicular access.Therefore, impacts in this regard will be less
than significant and no additional mitigation is required.
Potentially Less Than Significant Less Than
XVI. UTILITIES—Would the project: Significant with Mitigation Significant
Impact Incorporated Impact No Impact
a) Exceed wastewater treatment (1 0 El
requirements of the Santa Ana Regional
Water Quality Control Board?
b) Require or result in the construction of [�
new water or wastewater treatment
facilities or expansion of existing
facilities,the construction of which would
cause significant environmental effects?
c) Require or result in the construction of
new storm water drainage facilities or
expansion of existing facilities, the
construction of which could cause
significant environmental effects?
d) Have sufficient water supplies available to 1:1 ❑
serve the project from existing
entitlements and resources, or are new or
expanded entitlements needed?
e) Result in determination by the wastewater C]
treatment provider, which serves or may
serve the project that it has adequate
capacity to serve the project's projected
demand in addition to the provider's
existing commitments?
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f) Be served by a landfill with sufficient ❑ ® ❑ ❑
permitted capacity to accommodate the
project's solid waste disposal needs?
g) Comply with Federal, State, and local ❑ ❑ ® ❑
statutes and regulations related to solid
waste?
Discussion
XVI.a-b No Impact. The project must comply with Sections 404 and 401 of the Clean Water Act (CWA) in
terms of stormwater runoff quantity and quality that are discharged to this stretch of the Santa Ana
River via Twin Creek. Mitigation Measure HYD-1 outlined in the previous Section VIII.a requires the
filing of a Notice of Intent with the Regional Water Quality Control Board consistent with CWA
requirements to protect water resources in this area.
In summary, the proposed project would not require any new water or wastewater connections for
service, and subsequent permitting will assure compliance with regional water quality requirements,
therefore,there would be no impacts and no mitigation is required.
XVI.c Less than Significant Impact.The proposed project involves an expansion to the City's existing flood
control system to accommodate future growth.Approvals of drainage features/improvements are subject
to review and approval by the City Engineering Department. As part of this process, all project-related
drainage features would be required to meet the City's Operation & Maintenance Division standards.
The installation of project-related storm drain improvements would occur within an existing urbanized
area and would be designed, installed,and maintained per City standards. Because the project would be
required to design and install drainage systems according to standards and provisions set forth by the
City of San Bernardino, impacts related to this issue are anticipated to be less than significant(i.e., it
will actually be beneficial)and no mitigation is required.
XVI.d No Impact. The proposed project does not trigger the requirement for preparation of a water supply
assessment(i.e.,a development exceeding 500 residential units or equivalent)as established in Sections
10910-10912 of the California Water Code. See Item XVI.a-b above for more information.
XVI.e No Impact.Please refer to response to Checklist Question XVI.a-b above.
XVIX Less than Significant Impact with Mitigation. Demolition of existing flood control facilities will be
required to construct the proposed project. Materials that can be reused will be recycled to the extent
practical through the City's Refuse and Recycling Division, or through the County's Solid Waste
Management Division as appropriate.The City will provide solid waste collection services to the project
alignment through the City's Refuse and Recycling Division. Solid waste collection is a "demand-
responsive" service and current levels can be expanded and funded through user fees. Non-recyclable
solid waste from the proposed project would be collected and transported to the San Timoteo Sanitary
Landfill, located in the City of Redlands. These requirements are outlined in the following mitigation
measure:
UTL-I During project construction, existing asphalt and other waste materials will be recycled or
reused onsite to the extent practical, in compliance with the requirements of City's Refuse and
Recycling Division or the County's Solid Waste Management Division, as appropriate. Any
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materials that cannot be recycled or reused as part of this project will be disposed of in an
appropriate manner.This measure shall be implemented to the satisfaction of the City Engineer.
The San Timoteo Sanitary Landfill has a daily permitted throughput of 1,000 tons per day, a remaining
capacity of 11,360,000 cubic yards,and an estimated closure date of 2016.'Average daily throughput as
of 2011 is estimated at 690 tons/day. The volume of solid waste generated by the proposed project per
day represents 0.024 percent of the current permitted throughput at the San Timoteo Sanitary Landfill.
As adequate daily surplus capacity exists at the receiving landfill,development of the proposed project
would not significantly affect current operations or the expected lifetime of the landfill serving the
project area. With implementation of Mitigation Measure UTL-1, no significant solid waste disposal
impact would occur and no additional mitigation is required.
XVI.g Less than Significant Impact. The proposed project would be required to comply with applicable
elements of AB 1327, Chapter 18 (California Solid Waste Reuse and Recycling Access Act of 1991)
and other applicable local, state, and federal solid waste disposal standards, thereby ensuring that the
solid waste stream to the San Timoteo Sanitary Landfill is reduced in accordance with existing
regulations. In addition, Mitigation Measure UTL-1 recommended in Section XVI.f above will help
assure used asphalt will be recycled as part of this project. Otherwise, solid waste impacts are
considered to be less than significant.
Active Landfills Profile for San Timoteo Sanitary Landfill (36-AA-0087), CalRecycle website, http://www.calrecycle.ca.gov/
Profiles/Facility/Landfill/LFProfilel.asp?COLD=36&FACID-36-AA-0087 website accessed on February 3,2012.
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XVII. MANDATORY FINDINGS OF Potentially Less Than Significant Less Than
SIGNIFICANCE Significant with Mitigation Significant
Impact Incorporated Impact No Impact
a) Does the project have the potential to ❑ ® ❑ ❑
degrade the quality of the environment,
substantially reduce the habitat of a fish or
wildlife species, cause a fish or wildlife
population to drop below self-sustaining
levels, threaten to eliminate a plant or
animal community, reduce the number or
restrict the range of a rare or endangered
plant or animal, or eliminate important
examples of the major periods of
California history or prehistory?
b) Does the project have impacts that are ❑ ® ❑ ❑
individually limited, but cumulatively
considerable?("Cumulatively considerable"
means that the incremental effects of a
project are considerable when viewed in
connection with the effects of past projects,
the effects of other current projects, and the
effects of probable future projects.)
c) Does the project have environmental ❑ ❑ ® ❑
effects that will cause substantial adverse
effects on human beings, either directly or
indirectly?
Discussion
XVI.a Less than Significant with Mitigation. No endangered or threatened species were identified on site
during the biological resource survey. As stated in Section 1I1, development of the proposed project
would not cause a fish or wildlife population to drop below self-sustaining levels or restrict the
movement/distribution of a rare or endangered species. The proposed project would not affect any
threatened or endangered species or habitat. Potential impacts to migratory birds, the burrowing owl,
jurisdictional drainage features, and nesting bird species would be mitigated to a less than significant
level with adherence to Mitigation Measures BIO-1 through BIO-3. Impacts to on-site biological
resources (Twin Creek channel) will be reduced to a less than significant level with adherence to the
identified mitigation measures and subsequent state and federal permitting approvals.
Development of the proposed flood control improvements would not result in the elimination of any
identified archaeological or historical resources. There are no known unique ethnic or cultural values
associated with the site,nor are there any religious or sacred uses associated with the project alignment.
Mitigation Measures CUL-1 and CUL-2 have been identified to mitigate potential impacts if
undiscovered subsurface cultural and/or paleontological resources are found during excavation
operations.Adherence to the measure identified would reduce potential impacts associated with cultural,
historic,or paleontological resources to less than significant levels.
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XVI.b Less than Significant with Mitigation. The proposed project alignment is located within an area has
been designated by the City for industrial and commercial uses. While short-term construction-related
air quality and noise impacts would result from construction of the proposed flood control
improvements,adherence to Mitigation Measures AIR-1,GCC-1,N0I-1 and N0I-2 identified in this
Initial Study would help these impacts remain at less than significant levels. Other impacts related to
biological resources, geologic and soil conditions, hydrology and water quality, hazards and hazardous
materials, and archaeological/paleontological resources are similarly reduced to a less than significant
level through the implementation of mitigation measures and the adherence to established City-
mandated design and construction standards. Potential impacts related to water quality, hazardous
materials, and emergency access are addressed by Mitigation Measures HYD-1, HYD-2, HAZ-1,
HAZ-2,and TRA-1,respectively.
The cumulative effects resulting from build out of the City's General Plan were previously identified in
the General Plan EIR. The type, scale, and location of the proposed project is consistent with City's
General Plan and zoning designation and is compatible with the pattern of development that has been
approved for adjacent properties. Because of this consistency, the potential cumulative environmental
effects of the proposed project would fall within the impacts identified in the City's General Plan EIR.
As no cumulative impact greater than that identified in the General Plan EIR would result from
construction of the proposed drainage improvements, so less than significant impacts are anticipated to
occur.
XVI.c Less than Significant Impacts. As detailed in the preceding responses, development of the proposed
project would not result,either directly or indirectly,in significant adverse effects to human beings.
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REFERENCES
1. California Department of Conservation,Farmland Mapping and Monitoring Program,2014.
2. California Department of Toxic Substance Control, Hazardous Waste Substance and Sites List (Cortese
List), site accessed October 8.2014.
3. California Public Resources Code, §5020.10)
4. CalRecyle website, Active Landfills Profile for San Timoteo Sanitary Landfill (36-AA-0087),
http://www.calrecycle.ca.gov/Profiles/Facility/l,andfill/LFProfile l.asp?COID=36&FACID=36-AA-0087,
website accessed on January 8,2015.
5. City of San Bernardino,Development Code(Title 19 of the San Bernardino Municipal Code).
6. City of San Bernardino,General Plan,November 1,2005.
7. City of San Bernardino,General Plan Land Use Plan/Zoning Districts Map.
8. City of San Bernardino,General Plan Program Environmental Impact Report(EIR).
9. City of San Bernardino,Municipal Code,Sections 15.10, 15.34.
10. City of San Bernardino Municipal Water Department,Customer Service Department,January 2015.
11. City of San Bernardino Municipal Water Department, Urban Water Management Plan,December 2005.
12. Federal Emergency Management Agency(FEMA),Flood Insurance Rate Maps(FIRM),Panel 8683H dated
August 28,2008(map number 06071C8683h).
13. LSA Associates, Inc., Results of Biological Resources Analysis for the Twin Creek Orange Show Road
Storm Drain Project,January 2015.
14. South Coast Air Quality Management District,Final 2012 Air Quality Management Plan,adopted February
2013.
15. United States Department of Agriculture, Soil Conservation Service,Soil Survey of San Bernardino County,
Southwestern Part, California, 1980.
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SUMMARY OF MITIGATION MEASURES
AIR-1 The project shall comply with the requirements of SCAQMD Rules 402 and 403,Fugitive Dust,
which require the implementation of Reasonable Available Control Measures (RACM) for all
fugitive dust sources, and the AQMP, which identifies Best Available Control Measures
(BACM) and Best Available Control Technologies(BACT) for area sources and point sources,
respectively.This would include but would not be limited to the following actions:
1. The project proponent shall ensure that construction equipment is properly maintained and
serviced to minimize exhaust emissions.
2. The project proponent shall ensure that existing power sources are utilized where feasible
via temporary power lines to avoid on-site power generation.
3. The project proponent shall ensure that construction employees be informed of ride-sharing
and transit opportunities.
4. The project proponent shall ensure that any portion of the site to be graded shall be
prewatered to a depth of three feet prior to the onset of grading activities.
5. The project proponent shall ensure that twice daily watering of the site or other soil
stabilization methods shall be employed on an ongoing basis after the initiation of any on-
site grading activity. Portions of the site that are actively being graded shall be watered
regularly to ensure that a crust is formed on the ground surface,and shall be watered at the
end of each workday.
6. The project proponent shall ensure that all disturbed areas are treated to prevent erosion
until the site is constructed.
7. To reduce the potential for wind erosion,the project proponent shall ensure that landscaped
areas,if any,are installed as soon as possible.
8. The project proponent shall ensure that SCAQMD Rule 403 is adhered to, ensuring the
cleanup of construction-related dirt on approach routes to the project alignment.
9. The project proponent shall ensure that all grading activities are suspended during first and
second stage ozone episodes or when wind speeds exceed 25 miles per hour.
10. Cover all trucks hauling dirt, sand, soil, or other loose materials, or maintain at least 0.6 in
(2 feet) of freeboard (vertical space between the top of the load and top of the trailer)in
accordance with the requirements of California Vehicle Code(CVC)Section 23 114.
11. Limit all on-site traffic speeds to 15 mph or less.
GCC-1 To the extent practical and to the satisfaction of the City, the following shall be
incorporated into the design and construction of the project:
• Use locally produced and/or manufactured building materials for at least 10 percent of the
construction materials used for the project.
• Use "Green Building Materials," such as those materials that are resource efficient, and
recycled and manufactured in an environmentally friendly way, for at least 10 percent of the
project.
• Limit unnecessary idling of construction equipment. A reduction in equipment idling would
reduce fuel consumption,and therefore,GHG emissions.
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Maximize the use of electricity from the power grid by replacing diesel- or gasoline-
powered equipment during construction. This would reduce GHG emissions because
electricity can be produced more efficiently at centralized power plants.
BIO-1 A pre-construction burrowing owl survey shall be conducted within 10 days prior to beginning
of site grading in the event that burrowing owls occupy the site in the future. Surveys and
relocation, if applicable, shall be conducted between September 1 and January 31. It is
anticipated that the survey protocols will, at a minimum, reflect the standards of the CDFW
Staff Report on Burrowing Owl Mitigation(2012,as summarized below).
If burrowing owls are found on-site during the pre-construction surveys,they will be protected
in place through the use of buffer zones, visual screens, or other measures, while construction
activities are occurring.The CDFW Staff Report on Burrowing Mitigation includes appropriate
buffer zones based on the timing of construction that will be implemented, if needed. If
occupied burrows are too close to proposed construction areas to allow for appropriate
protection in place,a qualified biologist will discuss additional avoidance options with CDFW.
If needed,owls will be relocated by a qualified biologist from any occupied burrows that cannot
be avoided by project activities into adjacent suitable habitat. Suitable habitat is undeveloped
land that can meet the burrowing owl's life cycle requirements(for both foraging and breeding)
and is not intended for development. Suitable habitat must be adjacent or near the disturbance
site or artificial burrows will need to be provided nearby. Once the biologist has confirmed that
the owls have left the burrow, burrows should be excavated using hand tools and refilled to
prevent reoccupation.
Owls shall be excluded from burrows using passive relocation techniques within the approved
limits of disturbance and an appropriate buffer zone. This will be conducted by a qualified
biologist by installing one-way doors in burrow entrances. The qualified biologist will also
determine whether creation of artificial burrows is necessary as part of the relocation effort.
A Burrowing Owl Relocation Plan (Relocation Plan)prepared by a qualified biologist shall be
submitted to the CDFW for review and approval prior to relocation of owls. The Relocation
Plan shall describe proposed relocation and monitoring plans and shall include the number and
location(s)of occupied burrow sites and details on adjacent or nearby suitable habitat available
to owls for relocation. If no suitable habitat is available nearby for relocation, details regarding
the creation of artificial burrows(numbers,locations, and type of burrows)shall be included in
the plan.The Relocation Plan shall also describe proposed mitigation to compensate for impacts
to burrowing owls/occupied burrows within the project alignment.
BIO-2 The Project applicant shall mitigate riparian/riverine habitat impacts in the Twin Creek Channel
at a minimum 1:1 ratio. If onsite mitigation is determined to be insufficient by the resource
agencies, the project applicant shall mitigate any residual onsite impacts to riparian/riverine
habitat through the purchase of mitigation credits at a ratio of 2:1.The mitigation credits will be
purchased through the Inland Empire Resource Conservation District(IERCD) to ensure high
quality habitat is preserved/restored within the same watershed as the impact area.
BIO-3 If project activities are planned during the avian nesting season (approximately February l
through August 31), nesting bird surveys shall be conducted within three days prior to
disturbance to ensure birds protected under the MBTA are not disturbed by construction-related
activities such as noise and increased human presence. Any active nests detected in the area
shall be flagged and an appropriate buffer around the nest location will be established, as
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determined by the CDFW.The buffer area is to be avoided until the nesting cycle is complete or
it is determined by the biologist that the nest has failed.
CUL-1 If cultural resources (archaeologic or historic) are discovered during project excavation
activities, a qualified archaeologist and/or historian shall be retained to assess the nature and
significance of the find,diverting construction excavation if necessary.The archaeologist and/or
historian shall have the authority to redirect ground-disturbing activities in the vicinity of the
find until the nature and extent of the find can be evaluated. Any such resource uncovered
during the course of project-related grading shall be recorded and/or removed per applicable
guidelines, in consultation and cooperation with San Bernardino County Museum staff and
appropriate Native American tribal representatives or the County Historical Society.
CUL-2 If paleontological resources are discovered during grading, a qualified paleontologist will be
retained to evaluate the resource and then monitor the remaining ground-disturbing activities.
The qualified paleontologist shall have the authority to redirect ground-disturbing activities in
the vicinity of the find until the nature and extent of the find can be evaluated. Any such
resource uncovered during the course of project-related grading shall be recorded and/or
removed per applicable guidelines,in consultation and cooperation with San Bernardino County
Museum staff. Any recovery activity shall be consistent with applicable City and/or State
regulations.
GEO-1 Prior to the issuance of improvement plans or a grading permit, the project proponent shall
demonstrate to the City that the siting, design and construction of all flood control structures
within the project limits comply with onsite soil investigations, applicable regulations of the
California Building Code, as well as the recommendations identified in any project-specific
geotechnical investigation based on actual improvement design, including the potential for
subsidence and liquefaction.
HAZ-1 During excavation, the contractor shall notify the City immediately in the event malodorous or
discolored soils, liquids, containers, or other materials known or suspected to contain hazardous
materials and/or contaminants are encountered or spills of hazardous materials occur during on-
site demo lition/grading/construction. Earthmoving activities in the vicinity of said material shall
be halted until the extent and nature of the suspect material is determined by qualified
personnel, as determined by the City. The removal and/or disposal of any such contaminants
shall be in accordance with all applicable local,state,and federal standards.
HAZ-2 During all phases of project construction,the contractor shall maintain adequate emergency
access along Orange Show Road,Lena Road(also referred to as South Valley View Avenue),
and any feeder roads off these project roads within the project area.This measure shall be
implemented to the satisfaction of the City Engineer.
HYD-1 Prior to the issuance of a grading permit,the project applicant shall file and obtain a Notice of
Intent(NOI) with the Regional Water Quality Control Board in order to be in compliance with
the State NPDES General Construction Storm Water Permit for discharge of surface runoff
associated with construction activities. Evidence that this has been obtained(i.e., a copy of the
Waste Discharger's Identification Number) shall be submitted to the City for coverage under
the NPDES General Construction Permit. The NOI shall address the potential for an extended
and discontinuous construction period based on funding availability.
HYD-2 Prior to the issuance of a grading, the project applicant shall submit to and receive approval
from the City of San Bernardino a Storm Water Pollution Prevention Plan (SWPPP). The
SWPPP shall include a surface water control plan and erosion control plan citing specific
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measures to control on-site and off-site erosion during the entire grading and construction
period. In addition,the SWPPP shall emphasize structural and nonstructural Best Management
Practices(BMPs)to control sediment and non-visible discharges from the site.The SWPPP will
include inspection forms for routine monitoring of the site during construction phase to ensure
NPDES compliance and additional BMPs and erosion control measures will be documented in
the SWPPP and utilized if necessary. The SWPPP shall address the potential for an extended
and discontinuous construction period based on funding availability. The SWPPP will be kept
on site for the entire duration of project construction and will be available to the local RWQCB
for inspection at any time. Some the BMPs to be implemented may include the following:
• Sediment discharges from the site may be controlled by the following: sandbags,silt fences,
straw wattles and temporary basins (if deemed necessary), and other discharge control
devices. The construction and condition of the BMPs will be periodically inspected during
construction and repairs will be made when necessary as required by the SWPPP.
• Materials that have the potential to contribute to non-visible pollutants to stormwater must
not be placed in drainage ways and must be contained, elevated, and placed in temporary
storage containment areas.
• All loose piles of soil, silt, clay, sand,debris, and other earthen material shall be protected
in a reasonable manner to eliminate any discharge from the site. Stockpiles will be
surrounded by silt fences and covered with plastic tarps.
• In addition, the construction contractor shall be responsible for performing and
documenting the application of BMPs identified in the SWPPP.Weekly inspections shall be
performed on sandbag barriers and other sediment control measures called for in the
SWPPP. Monthly reports and inspection logs shall be maintained by the Contractor and
reviewed by the City of San Bernardino and the representatives of the State Water
Resources Control Board. In the event that it is not feasible to implement specific BMPs,
the City of San Bernardino can make a determination that other BMPs will provide
equivalent or superior treatment either on or off site.
N0I-1 During any project construction work within 200 feet of an existing residential property,
temporary noise reduction fencing shall be installed around the project work area or within the
City right-of-way adjacent to the affected residential property or properties for the duration of
construction in that area.The fencing shall be constructed of plywood with a total thickness of 1
to 1.5 inches,or a sound blanket wall may be used.If sound blankets are used,they must have a
Sound Transmission Class(STC)rating of 27 or better.
N01-2 During trenching within 200 feet of an existing residential property, vibration levels will be
regularly measured at the closest adjacent residential property line to assure vibration levels do
not exceed 0.2 inches per second which,according to Caltrans, is the level at which continuous
vibrations are annoying to people in buildings. If project-related vibrations exceed this threshold
for more than one continuous hour on a given day, or intermittently for over a four-hour period
of time on a given day,alternative less intense construction methods shall be implemented(e.g.,
using smaller equipment or using larger equipment for shorter periods of time, etc.)to achieve
the indicated performance standard.This measure shall be implemented to the satisfaction of the
City Engineer and only where project construction is within 200 feet of an existing residence
along the street portion of the project.
TRA-1 Prior to construction of any street portion of the project, the prime contractor shall submit a
Construction Traffic Mitigation Plan to the City for review and approval. The Plan shall outline
how construction traffic, parking, non-vehicular access, and other localized impacts from
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project work will minimize traffic impacts on Orange Show Road and Lena Road. The Plan
shall include signage, lane closures, use of signal persons, etc. to help reduce potential traffic
impacts from project construction.This measure shall be implemented to the satisfaction of the
City Engineer.
UTL-1 During project construction, existing asphalt and other waste materials will be recycled or
reused onsite to the extent practical, in compliance with the requirements of City's Refuse and
Recycling Division or the County's Solid Waste Management Division, as appropriate. Any
materials that cannot be recycled or reused as part of this project will be disposed of in an
appropriate manner.This measure shall be implemented to the satisfaction of the City Engineer.
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APPENDIX A
Air Quality and Greenhouse Gas Emissions
Twin Creek Orange Show Road Storm Drain Project
2015-122
L ISA S 120 E ASSOCIATES, I, S BERKELEY FRESNO RIVERSIDE
2q EXECUTIVE PARK, SUITE 200 949 553 OfiG6 TEL CARLSEAD PALM SPRINGS ROCKLIN
IRVINE, CALIFORNIA 92614 949 553$076 FAX FORT COLLINS PT RICHMOND SAN LUIS OBISPO
MEMORANDUM
DATE: January 12,2015
To: Aaron Leung,City of San Bernardino Planning Division
FROM: Kent Norton,AICP,Associate,LSA Associates,Inc.
Ronald Brugger,Senior Air Quality Specialist,LSA Associates,Inc.
SUBJECT: Construction Air Quality Impacts for the Proposed Twin Creek Orange Show Road
Storm Drain Project in the City of San Bernardino,California
This memorandum discusses the potential for air quality impacts from the construction of the
proposed Twin Creek Orange Show Road Storm Drain Project in the City of San Bernardino(City),
California.The proposed project is located within the City's right-of-way for Orange Show Road
from Twin Creek west to Lena Road,and in Lena Road 575 feet north of Norman Road,a distance of
approximately 1.0 mile.The entire flood control improvement project is within the City of San
Bernardino, San Bernardino County,California.
Construction of all the improvements may be completed in several phases over several years,
depending on the availability of funding and the pace of industrial development in this portion of the
City.Excavation depths will range from 15 to 30 feet but will mainly be at a depth of 25 feet within
the existing roads rights-of-way.Land uses in the area adjacent to the project site are mainly
industrial with some commercial on the west end and scattered rural residences(approx. 16 units)
along Orange Show Road and Lena Road.
Construction Emissions.Air quality impacts could occur during construction.Major sources of
emissions during demolition,trenching,and construction include exhaust emissions from construction
vehicles and equipment and fugitive dust generated by construction vehicles and equipment traveling
over exposed surfaces,as well as by soil disturbances from trenching.Exhaust emissions during
activities envisioned on site would vary as construction activity levels change.
The analysis conducted here assumes a worse-case schedule as shown in Table A. It is assumed that
there would be no overlap in emissions from different phases of construction.
Table A: Worst-Case Construction Schedule
Phase Phase Start . Phase End Number of Number
Number Phase Name _Date — Date Days/Week of Days
2 Demolition 3/1/2015 3/13/2015 5 10
3 "Trenching 3/14/2015 7/17/2015 5 �i90
4 Building Construction 7/18/2015 9/18/2015 5 45
Source:Project Description
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Fugitive dust emissions are generally associated with demolition,land clearing,exposure of soils and
cut and fill operations.Dust generated daily during construction would vary substantially,depending
on the level of activity,the specific operations,and weather conditions.The peak daily emissions
associated with the construction phases are listed in Table B.
Table B: Regional Construction Emissions—Peak Day
Total Regional Pollutant Emissions,lbs/day
Construction Fugitive Exhaust Fugitive Exhaust
Phase ROG NO, CO S02 PM,, PMra MIS PM,, CO2e
Demolition 4.6 46 32 0.04 0.25 2.7 0.062 2.5 4,100
Trenching 6.0 66 38 0.064 0.52 3.3 0.14 3.0 6,700
Construction 5.8 46 32 0.053 0.50 2.7 0.14 2.6 5,300
Peak Daily 6.0 66 38 0.064 3.8 3.1 6,700
Emissions
SCAQMD 75 100 550 150 150 55
Thresholds No
Significant No No No No No No Threshold
Emissions?
Source:LSA Associates,Inc,January 2015.
CO=carbon monoxide PM2 5=particulate matter less than 2.5 microns in size
CO2=carbon dioxide PMIO=particulate matter less than 10 microns in size
CO2.=carbon dioxide equivalent ROG=reactive organic compounds
Ibs/day=pounds per day SCAQMD=South Coast Air Quality Management District
NO,=nitrogen oxides SO,=sulfur oxides
Table B lists total daily construction emissions(i.e.,fugitive dust emissions and construction
equipment exhausts)that have incorporated standard control measures(described below in SC-1)that
can be reasonably implemented to significantly reduce emissions from construction.
Local Significance Thresholds In addition to the above regional emissions analysis,the SCAQMD
CEQA Handbook requires an evaluation of how construction emissions may affect"sensitive
receptors"like residents,young children,the elderly,etc.during construction using localized
significance thresholds(LSTs)1.LSTs represent the maximum emissions from a project that are not
expected to cause or contribute to an exceedance of the most stringent applicable federal or state
ambient air quality standard,and are developed based on the ambient concentrations of that pollutant
for each source receptor area and distance to the nearest sensitive receptor.There are existing
residential uses approximately 85 8 from the project site.Due to constraints of the project site
configuration and the anticipated construction schedule,the project is not expected to disturb more
than 1 ac on a daily basis.However to be conservative this analysis uses the LST levels for 2 ac.
Table C shows that the project on-site emissions would be lower than the appropriate SCAQMD LST
I From the SCAQMD wcbsitc,www.agmd.gov/home/regulations/cega/air-quality-analysis-
handbook/local i zed-significance-thresho 1 ds.
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thresholds for NOx,CO,PM10,and PM2,5(the only pollutants LSTs apply to).These thresholds take
into account the proximity of construction equipment to the existing residences near the project site.
Therefore,the project will not result in a significant air quality impact relative to LSTs.
Table C: Construction LST Emissions
Onsite Emissions(lbs/da )
On-Site Emissions Sources NOx CO PMta PM15
Construction Operations 61 33 3.2 2.9
LST Thresholds 170 972 7.0 4.0
Si nincant Emissions? No No No No
Source:LSA Associates,Inc.,January 2015.
SRA:Central San Bernardino Valley,2 acres,85 foot distance
CO=carbon monoxide PM2 5=particulate matter less than 2.5
lbs/day=pounds per day microns in size
LST=Localized Significance Threshold PMju=particulate matter less than 10
NOx=nitrogen oxides microns in size
Standard Conditions. In order to fully control construction-related air quality impacts,the City will
require the preparation and approval of a Dust Control Plan to be reviewed and approved by the
Public Works Division. In addition,the project proponent shall incorporate the following standard
conditions into the project.All air pollutant emissions would be below the daily thresholds
established by the SCAQMD without mitigation.
SC-1 The project shall comply with the requirements of SCAQMD Rules 402 and 403,
Fugitive Dust, which require the implementation of Reasonable Available Control
Measures (RACM) for all fugitive dust sources, and the AQMP, which identifies
Best Available Control Measures(BACM)and Best Available Control Technologies
(BACT) for area sources and point sources, respectively. This would include but
would not be limited to the following actions:
1. The project proponent shall ensure that construction equipment is properly
maintained and serviced to minimize exhaust emissions.
2. The project proponent shall ensure that existing power sources are utilized where
feasible via temporary power lines to avoid on-site power generation.
3. The project proponent shall ensure that construction employees be informed of
ride-sharing and transit opportunities.
4. The project proponent shall ensure that any portion of the site to be trenched shall
be prewatered to a depth of three feet prior to the onset of trenching activities.
5. The project proponent shall ensure that twice daily watering of the site or other
soil stabilization methods shall be employed on an ongoing basis after the
initiation of any on-site trenching activity. Portions of the site that are actively
being trenched shall be watered regularly to ensure that a crust is formed on the
ground surface,and shall be watered at the end of each workday.
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6. The project proponent shall ensure that all disturbed areas are treated to prevent
erosion until the site is constructed.
7. To reduce the potential for wind erosion,the project proponent shall ensure that
landscaped areas are installed as soon as possible.
8. The project proponent shall ensure that SCAQMD Rule 403 is adhered to,
ensuring the cleanup of construction-related dirt on approach routes to the project
site.
9. The project proponent shall ensure that all grading activities are suspended
during first and second stage ozone episodes or when wind speeds exceed 25
miles per hour.
10. Cover all trucks hauling dirt, sand, soil, or other loose materials, or maintain at
least 0.6 in (2 feet) of freeboard (vertical space between the top of the load and
top of the trailer)in accordance with the requirements of California Vehicle Code
(CVC)Section 23114.
11. Limit all on-site traffic speeds to 15 mph or less.
Summary.By conforming to the construction Standard Conditions mandated by the SCAQMD and
listed above in SC-1,the planned construction of the proposed project would not create air emissions
that would exceed any of the SCAQMD daily emissions thresholds nor any of the SCAQMD LST
thresholds.Thus,the air emissions during construction would be less than significant and no
mitigation is necessary.
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APPENDIX B
Biological Resources Assessment
and Permitting Materials
Twin Creek Orange Show Road Storm Drain Project
2015-122
U.S. Army Corps of Engineers ,South Pacific Division
Nationwide Permit Pre-Construction Notification (PCN) Form
This form integrates requirements of the U.S.Army Corps of Engineers Nationwide Permit Program within the South Pacific Division
(SPD),including General and Regional Conditions. You MUST fill out all boxes related to the work being done. Fillable boxes in this
form expand if additional space ce is needed.
Box 1 Project Name
Twin Creek at Orange Show Road Storm Drain Im rovements
Applicant Name Applicant Title
Applicant Company,Agency, etc. Applicant's internal tracking number(if any)
City of San Bernardino
Mailing Address
Work Phone with area code Mobile Phone with area code Home Phone with area code Fax # with area code
E-mail Address Relationship of applicant to property:
Owner Purchaser Lessee Other:
Application is hereby made for verification that subject regulated activities associated with subject project qualify for
authorization under a U.S.Army Corps of Engineers Nationwide Permit or Permits as described herein. I certify that I
am familiar with the information contained in this application and,that to the best of my knowledge and belief,such
information is true,complete,and accurate. I further certify that I possess the authority to undertake the proposed
activities. I hereby grant to the agency to which this application is made the right to enter the above-described location
to inspect the proposed, in-progress or completed work. I agree to start work only after all necessary permits have
been received and to comply with all terms and conditions of the authorization.
Signature of applicant Date (mm/dd/yyyy)
If anyone other than the person named as the Applicant will be in contact with the U.S.Army Corps of Engineers representing the
A riplicant regarding this project during the permit process,Box 2 MUST be filled out.
Box 2 Authorized Agent/Operator Name Agent/Operator Title
Sarah Barrera Senior Biologist
Agent/Operator Company, Agency, etc. E-mail Address
LSA Associates Inc. sarah.barrera @lsa-assoc.com
Mailing Address
1500 Iowa Avenue Suite 200 Riverside Ca 92507
Work Phone with area code Mobile Phone with area code Home Phone with area code Fax #with area code
951-781-9310 1 N/A I N/A 951-781-4277
I hereby authorize the above named authorized agent to act in my behalf as my agent in the processing of this application and to
furnish,upon request,supplemental information in support of this permit application.I understand that I am bound by the actions of
mv acient and I understand that if a federal or state permit is issued I or my agent,must sign the ermit.
Signature of applicant Date (mm/dd/yyyy)
I certify that I am familiar with the information contained in this application, and that to the best of my knowledge and
belief,such information is true complete,and accurate.
Signature of authorized agent Date mm/ddl
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Box 3 Name of Property Owner(s), if other than Applicant:
Owner Title Owner Company, Agency, etc.
Mailing Address
Work Phone with area code Mobile Phone with area code Home Phone with area code
Box 4 Name of Contractor(s) (if known):
Contractor Title Contractor Company,Agency, etc.
Mailing Address
Work Phone with area code Mobile Phone with area code Home Phone with area code
Box 5 Site Number 1 of 1. Project location(s), including street address, city,county,
state,zip code where proposed activity will occur:
The proposed storm drain outfall structure will be constructed in the Twin Creek channel on the
south side of Orange Show Road, City of San Bernardino, San Bernardino, CA
Name of Waterbody(ies) (if known,otherwise enter"an unnamed tributary to"):Twin Creek
Tributary to what named downstream waterbod : Santa Ana River
Latitude & Longitude (o/M/S,rte,or UTM with Zone): Section, Township, Range:
34.079324, -117.285575 San Bernardino Land Grant
Projected T1S R4W Section 15
County Assessor Parcel Number(Include county name): USGS Quadrangle map name:
San Bernardino County 014126205 San Bernardino South
Watershed(HUC and watershed name'): Size of permit area or project boundary:
'http://water.usgs.gov/GIS/regions.htmi acres linear feet
Directions to the project location and other location descriptions, if known:
The project is located approximately X.XX miles east of Interstate 215 and the Orange Show Road
exit. It is located on the south side of Orange Show Road between E Street and Waterman
Avenue.
Access limitations or restrictions (if any): Locked San Bernardino County Flood Control Gate Fence
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Box 6 Nature of Activity (Description of the project,include all features):
The proposed project is the expansion of the storm drain system in Orange Show Road to increase
capacity. The storm drain pipes currently located in the roadway will be replaced with larger
diameter pipes and a new outfall structure will be located at the same location of the existing
structure in Twin Creek. A concrete headwall and grouted rip rap pad will be installed at the outfall
structure to prevent channel erosion caused by high frequency flows.
Project Purpose(Description of the reason or purpose of the project):
The current storm drain facilities are inadequate to prevent flooding during large rainfall events.
Reason(s) for Discharge into Waters of the United States(Description of why dredged and/or fill material
needs to be placed in Waters of the United States): Expansion of the storm drain facilities is needed to provide
adequate flood control for the surrounding area.
Proposed discharge of dredge and/or fill material. Indicate total surface area in acres and linear
feet(where appropriate)of the proposed impacts to Waters of the United States, indicate water body type(tidal
wetland, non-tidal wetland, vernal pool, riparian wetland,ephemeral stream/river, intermittent stream/river, perennial
stream/river, pond/lake,vegetated shallows, bay/harbor, lagoon, ocean,etc.),and identify the impact(s)as permanent
and/or temporary for each requested Nationwide Permit':
'Enter the intended permit number(s). See Nationwide Permit regulations for permit numbers and qualification information:
Requested NWP Number:43 Requested NWP Number: Requested NWP Number:
Water Body Permanent Temporary Permanent Temporary Permanent "Temporary
Type Area Length Area Length Area Length Area Length Area Length Area Length
Non-wetland <0.01 140
ephemeral channel
Total: <0.01 140
Total volume (in cubic yards) and type(s) of material proposed to be dredged from or discharged
into Waters of the United States:
Material TylLe.. Total Volume Dredged Total Volume Discharged
Rock Slope Protection (RSP) 29.6
Clean spawning gravel
River rock
Soil/Dirt/Silt/Sand/Mud 4.5
Concrete
Structure(Cutoff Wall) 0.4
Stumps/Root wads
Other:
Total: 134.5
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Activity requires a written waiver to exceed specified limits of the Nationwide Permit? M Yes 0 No
If yes, provide Nationwide Permit number and name, limit to be exceeded, and rationale for each
requested waiver:
Activity will result in the loss of greater than 1/2-acre of Waters of the United States? YesN No
If yes, provide an electronic copy (compact disc) or multiple hard copies (7) of the complete PCN for
appropriate Federal and State Pre-discharge Notification (see General condition#31,Pre-construction Notification,
Agency Coordination,Section 2 and 4):
Describe direct and indirect effects caused by the activity (General condition#31,District Engineer's Decision:
The project will result in direct impacts to the 2-foot wide incised channel associated with the
existing outfall structure from the storm drain system into Twin Creek. A four-foot deep grouted rip
rap pad will be placed over 100 linear feet of this channel. A 1-foot wide buried 5-foot cutoff wall
will be placed at the edge of the rip rap pad. An additional 15-foot wide area of the channel will be
graded but will remain earthen. Indirect effects to the channel and Twin Creek include increased
flows from the storm drains stem.
Potential cumulative impacts of proposed activity(if any): The project is not anticipated to result in any
additional cumulative impacts.
Drawings and figures (see each U.S,Army Corps of Engineers District's Minimum Standards Guidance):
Vicinity map: ® Attached (or mail copy separately if applying electronically)
To-scale Plan view drawing(s): ® Attached (or mail copy separately if applying electronically)
To-scale elevation and/or Cross Section drawing(s): ® Attached (or mail copy separately if applying electronically)
Numbered and dated pre-project color photographs: ® Attached (or mail copy separately if applying electronically)
Sketch drawing(s) or map(s): ❑ Attached or mail copy separately if applying electronically
Has a wetlands/waters of the U.S. delineation been completed?
® Yes, Attached2 (or mail copy separately if applying electronically) ❑ No
If a delineation has been completed, has it been verified in writing by the Corps?
F] Yes, Date of preliminary or approved jurisdictional determination(mm/dd/yyyy): Corps file number: ® No
zIf available provide ESRI sha files NAD83 for delineated waters
For proposed discharges of dredged material resulting from navigation dredging into inland or near-
shore waters of the U.S. (including beach nourishment), please attach3 a proposed Sampling and
Analysis Plan (SAP) prepared according to Inland Testing Manual (ITM) guidelines (including Tier I
information, if available), or if disposed offshore, a proposed SAP prepared according to the Ocean
Disposal Manual.
3 O mail copy separately if applying electronically
Is any portion of the work already complete? El YES NO
If yes, describe the work:
Box 7 Authority:
Is Section 10 of the Rivers and Harbors Act applicable?: ❑ YES ® NO
Is Section 404 of the Clean Water Act applicable?: ® YES ❑ NO
Is the project located on U.S. Army Corps of Engineers property or easement?: ❑ YES ® NO
If yes, has Section 408 process been initiated?: ❑ YES ❑ NO
Would the ro'ect affect a U.S. Arm Cor s of En ineers structure?: ❑ YES ® NO
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If yes, has Section 408 process been initiated?: YES NO
Is the project located on other Federal Lands (USFS, BLM, etc.)?: ❑ YES ® NO
Is the project located on Tribal Lands?: ❑ YES ® NO
Box 8 Is the discharge of fill or dredged material for which Section 10/404 authorization is sought
art of a larger plan of development?: ❑ YES ® NO
If discharge of fill or dredged material is part of development, name and proposed schedule for that
larger development (start-up, duration, and completion dates):
NA
Location of larger development (if discharge of fill or dredged material is part of a plan of
development, a map of suitable quality and detail of the entire project site should be included):
NA
Box 9 Measures taken to avoid and minimize impacts to waters of the United States:
The project has been engineered to the standards required to meet existing and future flood control
needs. The project footprint has been contained to the minimum size needed to meet these needs.
Temporary impacts outside of the area to be permanently developed will be minimized by
identifying access routes that construction equipment will be required to use.
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2015-122
Box 10 Proposed Compensatory Mitigation related to fill/excavation and dredge activities. Indicate in
acres and linear feet(where appropriate)the total quantity of Waters of the United States proposed to be created,
restored, enhanced and/or preserved for purposes of providing compensatory mitigation. Indicate water body type
(tidal wetland, non-tidal wetland, vernal pool, riparian wetland, ephemeral stream/river, intermittent stream/river,
perennial stream/river, pond/lake,vegetated shallows, bay/harbor, lagoon,ocean, etc.)or non-jurisdictional (uplands').
Indicate mitigation type(permittee-responsible on-site/off-site, mitigation bank, or in-lieu fee program). If the mitigation
is purchase of credits from a mitigation bank, indicate the bank to be used, if known:
'For uplands,please indicate if designed as an upland buffer.
Site Water Body Created Restored Enhanced Preserved Mitigation
Number Type Area Length Area length Area Length Area Length Type
Total:
If no mitigation is proposed, provide detailed explanation of why no mitigation would be necessary:
The proposed project will not result in the loss of any waters of the U.S. or wetlands. The proposed
project is located within an existing disturbed flood control channel. The project will maintain the
same functions of the existing waters, the proposed impacts are only the conversion of the
streambed from earthen to grouted rip-rap and other engineered materials
If permittee-responsible mitigation is proposed, provide justification for not utilizing a Corps-
approved mitigation bank or in-lieu fee program:
Has a draft/conceptual mitigation plan been prepared in accordance with the April 10, 2008, Final
Mitigation Rule and District Guidelines3,4,57
zhttp://www.usace.army.mil/Missions/CivilWorks/RegulatoryProgramandPermits/mitig_info.aspx
;Sacramento and San Francisco Districts-http://www.spk.usace.army.mil/organizations/cespk-
co/regulatory/pdf/Mi tigation_Monitoring_Guidelines.pdf
4Los Angeles District-hit p!/www spl usace army.mil/Missions/RegStiatory.asi2x
5Albuquerque District-http://www.spa.usace.army.mil/reg/mitigation/SPA%2OFinal%2OMibgation%2OGuidelines_OLD.pdf
❑ Yes, Attached (or mail copy separately if applying electronically) ® No— Not Applicable
If no a Mitigation plan must be prepared and submitted if applicable.
Mitigation site(s) Latitude & Longitude (D/M/S,DD, USGS Quadrangle map name(s):
or UTM with Zone):
Assessor Parcel Number(s): Section(s), Township(s), Range(s):
Other location descriptions, if known:
Directions to the mitigation location(s):
Page 6 of 15
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Box 11 Threatened or Endangered Species and Essential Fish Habitat
Please list any federally-listed(or proposed)threatened or endangered species or critical habitat(or
proposed critical habitat)within the project area(include scientific names(e.g.,Genus species),if
known):
a. Southwestern willow flycatcher (Empidonax trail/ii extimus). The project area is located in an
area mapped as designated critical habitat (revised Final Critical Habitat for the SWWF, January 3,
2013). However, within the revised critical habitat boundaries, only lands containing some or all of
the primary constituent elements (PCEs) identified for the species are designated as critical
habitat. For the SWWF, these PCE's include:
• Trees and Shrubs that include but aren't limited to species of willow and box elder;
• Dense riparian vegetation with thickets of trees and shrubs ranging in height from 6 to 98
feet tall in middle and lower elevation riparian forests, and with lower-stature thickets (6 to
13 feet tall) found at higher elevation riparian;
• Dense riparian understory foliage at least from the ground level up to approximately 13 feet;
• Sites for nesting that contain a dense tree and/or shrub canopy (i.e., a tree or shrub canopy
with densities ranging from 50 percent to 100 percent);
• Dense patches of riparian forests that are interspersed with small openings of open water or
marsh or shorter/sparser vegetation, that creates a mosaic; and
• A variety of insect prey populations (wasps, bees, flies, beetles, butterflies and moths, etc.).
The project area consists of nonnative grassland vegetation and does not contain any trees or other
riparian vegetation. The maximum height that species identified within the project area would reacy
is approximately three feet tall. The project area is regularly maintained for flood control purposes
and vegetation is mowed on a regular basis. Therefore, vegetation will never meet the requirements
of the PCE's identified above so long as the Twin Creek Channel is maintained for its designated
flood control purpose.
Additionally, implementation of the project will not result in degradation of critical habitat that
occurs downstream. The Twin Creek Channel will continue to function as a flood control channel,
and the hydrologic regime of downstream areas will not be affected.
Have surveys, using U.S. Fish and Wildlife Service/NOAH Fisheries protocols, been conducted?
El Yes, Report attached or mail copy separately if applying electronically ® No
Has a biological assessment or evaluation been completed for the proposed project? No, however
vegetation and wildlife species identified during the jurisdictional delineation were noted and a list of
these species is included as an Appendix in the Jurisdictional Delineation Report.
Yes Report attached or mail copy separately if applying electronically ❑ Not attached
Has Section 7 consultation been initiated by another federal agency?
❑ Yes Initiation letter attached or mail copy separately if applying electronically No
Has Section 10 consultation been initiated for the proposed project?
Yes Initiation letter attached or mail copy separately if applying electronically ® No
Has the USFWS/NOAA Fisheries issued a Biological Opinion?
❑ Yes, Attached (or mail copy separately if applying electronically) ® No
If yes, list date Opinion was issued m d/
Is the project located within Essential Fish Habitat (EFH)? Yes M No
lhttg:/Is r nmfs noaa aov/hcd/HCD webContent/EFH/index EFH htm
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Box 12 Historic Properties and Cultural Resources:
Are any cultural resources of any type known to exist on-site? ❑ Yes ® No
Please list any known historic properties listed, or eligible for listing,on the National
Register of Historic Places:
a. b.
C. d.
e. f.
Has a cultural resource records search been conducted?
❑ Yes Report attached or mail copy separately if applying electronically ® No
Has a cultural resource pedestrian survey been conducted for the site?
❑ Yes Report attached or mail copy separately if applying electronically ® No
Has another federal agency been designated the lead federal agency for Section 106 consultation?
❑ Yes Designation letter email attached or mail copy separately if applying electronically ® No
Has Section 106 consultation been initiated by another federal agency?
❑ Yes Initiation letter attached or mail copy separately if applying electronically ® No
Has a Section 106 MOA or PA been signed by another federal agency and the SHPO?
❑ Yes, Attached (or mail copy separately if applying electronically) ® No
If yes, list date MOA or PA was signed m d
Box 13 Section 401 Water Quality Certification:
Applying for certification? ® Yes, Attached (or mail copy separately if applying electronically) ❑ No
❑ Not applicable (projects proposed for authorization under RHA Section 10 only)
Certification issued (including Programmatically)?
❑ Yes, Attached (or mail copy separately if applying electronically) ® No
Certification waived? ❑ Yes, Attached (or mail copy separately if applying electronically) ® No
Certification denied? ❑ Yes, Attached (or mail copy separately if applying electronically) ® No
Exempted activity? ❑ Yes ® No
Agency concurrence? ❑ Yes, Attached ® No
If exempt, state why-
Box 14 Coastal Zone Management Act:
Is the project located within the Coastal Zone? ❑ Yes ® No (1f no,proceed to Box 15)
If yes, applying for a coastal commission-approved Coastal Development Permit?
❑ Yes, Attached (or mail copy separately if applying electronically) ❑ No
If no, applying for separate CZMA-consistency certification?
❑ Yes, Attached (or mail copy separately if applying electronically) ❑ No
Permit/Consistency issued? ❑ Yes, Attached (or mail copy separately if applying electronically) ❑ No
Exempt? [:] Yes ❑ No
Agency concurrence? ❑ Yes, Attached ❑ No
If exempt, state why:
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2015-122
Box 15 List of other certifications or approvals/denials received from other federal, state, or local
agencies for work described in this application:
Agency Type of Approval Identification Date Date Date
Number Applied Approved Denied
California Lake or TBD Concurrent TBD
Department Streambed
of Fish and Alteration
Wildlife A reement
Regional Water Quality TBD Concurrent TBD
Water Quality Certification
Control Board
Would include but is not restricted to zoning,building,and flood plain permits
Page 9 of 15
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Nationwide Permit General Conditions (GC) checklist:
(httg://www.000.gov/fdsys/okg/FR-2012-02-21/pdf/2012-3687 pdf)
Check General Condition Rationale for compliance with General Condition
1. Navigation The proposed activity will not affect navigation
2. Aquatic Life Movements The project area does not support aquatic life
3.Spawning Areas The project area does not support spawning areas
4. Migratory Bird Breeding Areas The project area does not support migratory bird breeding
habitat.
5. Shellfish Beds The project area does not support shellfish beds
6. Suitable Material Onlv suitable material will be used for the project
7. Water Supply Intakes The ro osed activity is not near a public water supply intake
8.Adverse Effects from Impoundments The proposed activity does not involve water impoundment
9. Management of Water Flows The project will result in improved management of water
Flows in the existing flood control channel
10. Fills Within 100-Year Floodplains The project is located in a flood control channel and will
contribute to improved flood control functions.
11. Equipment There are no wetlands or mud flats in the proposed project
area.
12. Soil Erosion and Sediment Controls The project includes sediment stability measures including
grouted rip rap and buried cutoff wall that will reduce the
rate of flow of incoming storm waters to prevent erosion.
13. Removal of Temporary Fills All temporary fills will be removed and affected areas will be
recontouredf.if needed.
14. Proper Maintenance The new outlet, headwall, and other associated infrastructure
will be maintained in order ensure proper functioning and
safe
15. Single and Complete Project The proposed project is a single and complete project and
will use one NWP one time.
16. Wild and Scenic Rivers The affected water is not considered a"Wild and Scenic
River"
17.Tribal Rights The project will not impair any tribal rights
18. Endangered Species The project are does not support any endangered species.
The area has been mapped as designated critical habitat for
the southwestern willow flycatcher(Empidonax traiiiii
extimus)however the project area does not contain any
Primary Constituent Elements and will not in the future due
to its function as a maintained flood control channel.
19. Migratory Bird and Bald and Golden Eagle The proposed project does not contain substantial bird
Permits breeding habitat. It does not provide habitat to support bald
or golden eagles. If construction activities are proposed
during the Migratory Bird Nesting Season (February 15 to
August 15)a pre-construction nesting bird survey will be
conducted within three days of the start of construction. If
birds are found nesting in the project area or in adjacent
areas that would be indirectly affected by construction
activities suitable measures will be implemented to ensure
that no nesting migratory birds are affected.
20. Historic Properties No known historic properties are located within the proposed
project area.
21. Discovery of Previously Unknown Remains The District Engineer will be notified if any previously
and Artifacts unknown historic,cultural or archeological remains and
artifacts are discovered during project construction. This is
not antici ated sing the work will be conducted in a
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2015-122
constructed flood control channel that has been disturbed in
recent history.
22. Designated Critical Resource Waters The proposed activity will not occur within any Designated
Critical Resource Waters.
23. Mitigation Proposed mitigation includes the avoidance and minimization
of impacts to waters of the US outside of the necessary
impact areas. Compensatory is not anticipated as there will
be no permanent loss of waters of the U.S.,only conversion
from earthen to rip rap substrate.
24. Safety of Impoundment Structures The proposed project does not have any impoundment
structures.
25.Water Quality A Section 401 Water Quality Certification will be obtained
prior to the start of project construction..
26. Coastal Zone Management The propo sed project is not located within the Coastal Zone.
27. Regional and Case-by-Case Conditions The proposed project is not in conflict with any Regional
Conditions
28. Use of Multiple Nationwide Permits The proposed project will only use one NWP
29. Transfer of Nationwide Permit Verifications The property the proposed project is located on is not
anticipated to be sold. In the event sale does happen,the
NWP Verifications would be transferred according to
procedures discussed under this condition.
30. Compliance Certification The Permittee will sign the Compliance Certification provided
by the USACE at the time of project completion.
F21—- I 31. Pre-Construction Notification The proposed project will not be constructed until the
requirements of this condition are satisfied.
Page I I of 15
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2015-122
NWP Regional Conditions (RC) checklist:
Los Angeles District (SPL) in Arizona and California:
1. Is the project located within a waterbody supporting any federally-listed threatened or endangered fish species?
❑Yes ® No
If yes, unless determined to be impracticable by the U.S.Army Corps of Engineers(Corps),the permittee shall design
all road crossings to ensure that the passage and/or spawning of fish is not hindered. In these areas,the permittee
shall employ bridge designs that span the stream or river, including pier-or pile-supported spans,or designs that use
a bottomless arch culvert with a natural streambed.
2. Is the project located within the State of Arizona or the Mojave and Sonoran (Colorado)desert regions of California in
the Los Angeles District'?
❑Yes ® No
'The desert regions in California are limited to four USGS Hydrologic Unit Code(HUC)accounting units(Lower Colorado—150301,
Northern Mojave—180902,Southern Mojave-181001,and Salton Sea—181002.
If yes, is the applicant aware of the restriction described below?
❑Yes ❑ No ❑ Not Applicable
Nationwide Permits(NWP)3, 7, 12-15, 17-19, 21, 23, 25, 29, 35,36, 39-46,and 48-52 cannot be used to authorize
structures,work, and/or the discharge of dredged or fill material that would result in the"loss"of wetlands, muciflats,
vegetated shallows, or riffle and pool complexes,as defined at 40 CFR Part 230.40-45. The definition of"loss"for
this regional condition is the same as the definition of"loss of waters of the United States" used for the Nationwide
Permit Program.
3. Is pre-construction notification(PCN) required?
®Yes ❑ No
If yes, then in accordance with General Condition 31, the appropriate Corps District shall be notified using either the
South Pacific Division PCN Checklist or a signed application form(ENG Form 4345)with an attachment providing
information on compliance with all of the General and Regional Conditions. The PCN Checklist and application form
are available at: hip /wwwspl usace armv mil/Missions/Regulatory aspx. In addition, the PCN shall include:
a. A written statement describing how the activity has been designed to avoid and minimize adverse effects, both
temporary and permanent,to waters of the United States; and
b. Drawings, including plan and cross-section views,clearly depicting the location,size and dimensions of the
proposed activity as well as the location of delineated waters of the U.S. on the site. The drawings shall contain a
title block, legend and scale,amount(in cubic yards)and area (in acres)of fill in Corps jurisdiction, including both
permanent and temporary fills/structures.The ordinary high water mark or, if tidal waters,the mean high water
mark and high tide line, should be shown(in feet), based on National Geodetic Vertical Datum(NGVD)or other
appropriate referenced elevation. All drawings for projects located within the boundaries of the Los Angeles
District shall comply with the most current version of the Map and Drawing Standards for the Los Angeles District
Regulatory Division(available on the Los Angeles District Regulatory Division website at:
http:/Iwww.sQl usace.army mil/Missions/Regulatory aspx); and
c. Numbered and dated pre-project color photographs showing a representative sample of waters proposed to be
impacted on the project site, and all waters proposed to be avoided on and immediately adjacent to the project
site. The compass angle and position of each photograph shall be documented on the plan-view drawing required
in subpart b of this regional condition.
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If yes, is the PCN attached?
®Yes ❑ No ❑ Not Applicable
4. Are any of the regulated activities located in the following areas:
a. All perennial waterbodies and special aquatic sites within the State of Arizona and within the Mojave and
Sonoran(Colorado)desert regions of California,excluding the Colorado River in Arizona from Davis Dam to River
Mile 261 (northern boundary of the Fort Mojave Indian Tribe Reservation).The desert region in California is
limited to four USGS HUC accounting units(Lower Colorado-150301, Northern Mojave-180902, Southern Mojave-
181001,and Salton Sea-181002).
❑Yes ® No
b. All areas designated as Essential Fish Habitat(EFH) by the Pacific Fishery Management Council (i.e.,all tidally
influenced areas- Federal Register dated March 12, 2007(72 FR 11092)), in which case the PCN shall include an
EFH assessment and extent of proposed impacts to EFH. Examples of EFH habitat assessments can be found at:
htto://www.swr.noaa.00Wefn.htm.
❑Yes ® No
c. All watersheds in the Santa Monica Mountains in Los Angeles and Ventura counties bounded by Calleguas Creek
on the west, by Highway 101 on the north and east, and by Sunset Boulevard and Pacific Ocean on the south.
❑Yes ® No
d. The Santa Clara River watershed in Los Angeles and Ventura counties, including but not limited to Aliso Canyon,
Agua Dulce Canyon, Sand Canyon, Bouquet Canyon, Mint Canyon, South Fork of the Santa Clara River,San
Francisquito Canyon, Castaic Creek, Piru Creek,Sespe Creek and the main-stem of the Santa Clara River.
❑Yes ® No
If yes to a, b, c, or d, notification to the Corps pursuant to General Condition 31 and Regional Condition 3 is required.
5. Will the proposed activity result in the discharge of fill material into jurisdictional vernal pools?
❑Yes ® No
If yes,an Individual Permit is required unless the discharges are for the purpose of restoration,enhancement,
management, or scientific study of vernal pools, which may be authorized under NWPs 5, 6, and/or 27 with the
submission of a PCN in accordance with General Condition 31 and Regional Condition 3.
6. a) Is project within the Murrieta Creek or Temecula Creek watersheds in Riverside County?
❑Yes ® No
b)Will the project require new permanent fill in perennial or intermittent watercourses?
❑Yes ® No
If yes to a and b,then projects which would otherwise be authorized under NWPs 29, 39,42,or 43 (including cases
where NWP 14 would be used In conjunction with above NWPs),will require an Individual Permit.
c)Is the roject located in an ephemeral watercourse?
®Yes LJ No
�d Will the project impact greater than 0.1 acre of waters of the U.S.?
]Yes ® No
If yes to a,c,and d,then projects which would otherwise be authorized under NWPs 29, 39, 42,or 43(including
cases where NWP 14 would be used in conjunction with above NWPs), will require an Individual Permit.
7. a)Is the project a bank stabilization project in San Luis Obispo Creek or Santa Rosa Creek in San Luis Obispo County?
F1 Yes No
b)Is the project a bank stabilization or grade control structure in Gaviota Creek, Mission Creek, or Carpinteria Creek
In Santa Barbara County?
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2015-122
❑Yes ® No
If yes to a or b,then an Individual Permit(Standard Individual Permit or 404 Letter of Permission)is required.
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B. Is the project located within the Los Angeles District's Special Area Management Plan(SAMP)areas for the San Diego
Creek Watershed and San Juan Creek/Western San Mateo Creek Watersheds in Orange County,California?
❑Yes ® No
If yes,then the Corps' Division Engineer,through his discretionary authority, has revoked the use of the following 26
selected NWPs within these SAMP watersheds: 3, 7, 12, 13, 14, 16, 17, 18, 19, 21, 25, 27, 29, 31, 33, 39, 40,41,
42, 43, 44,46,49,and 50. Consequently,these NWPs are no longer available in the above watersheds to authorize
impacts to waters of the United States from discharges of dredged or fill material under the Corps'Clean Water Act
section 404 authority.
9. Will the activity result in the loss of greater than 300 linear feet of intermittent and/or ephemeral streams for NWPs
29, 39, 40, 42, 43, 44, 51,and 52 or result in the loss of greater than 500 linear feet along the bank for NWP 13?
❑Yes ® No
If yes, is the applicant requesting a waiver of the linear foot limit?
❑Yes ❑ No ® Not Applicable
If yes,then the request shall include the following:
a. A narrative description of the stream.This should include known information on: volume and duration of flow; the
approximate length,width, and depth of the water body and characters observed associated with an Ordinary
High Water Mark(e.g. bed and bank,wrack line, or scour marks); a description of the adjacent vegetation
community and a statement regarding the wetland status of the associated vegetation community(i.e. wetland,
non-wetland); surrounding land use; water quality; issues related to cumulative impacts In the watershed,and;
any other relevant information; and
b. An analysis of the proposed impacts to the waterbody in accordance with General Condition 31 and Regional
Condition 3; and
c. Measures taken to avoid and minimize losses, including other methods of constructing the proposed project; and
d. A compensatory mitigation plan describing how the unavoidable losses are proposed to be compensated, in
accordance with 33 CFR Part 332.
10. Will the permittee complete the construction of any compensatory mitigation required by special condition(s) of the
NWP verification before or concurrent with commencement of construction of the authorized activity?
❑Yes ❑ No® Not Applicable
If no,then the proposed activity may not be in compliance with Regional Condition 10, unless construction of
compensatory mitigation prior to or concurrent with commencement of construction of the authorized activity is
specifically determined Impracticable by the Corps.
Will the mitigation involve use of a mitigation bank or in-lieu fee program?
❑Yes ® No
If yes, then the permittee shall submit proof to the Corps of payment prior to commencement of construction of the
authorized activity.
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EXHIBIT "B"
TWIN CREEK ORANGE SHOW ROAD STORM DRAIN PROJECT
MITIGATION MONITORING REPORTING PROGRAM
This Mitigation Monitoring and Reporting Program was prepared to implement the mitigation
measures outlined in the Draft and Final Initial Study (herein Final Initial Study) for the Twin
Creek Orange Show Road Storm Drain Project. This program has been prepared in compliance
with the California Environmental Quality Act (CEQA), and the State and City of San
Bernardino CEQA Guidelines.
CEQA Section 21081.6 requires adoption of a monitoring and/or reporting program for those
measures or conditions imposed on a project to mitigate or avoid adverse effects on the
environment. The law states that the monitoring or reporting program shall be designed to ensure
compliance during project implementation.
The Mitigation Monitoring and Reporting Program contains the following elements:
1. The mitigation measures are recorded with the action and procedure necessary to
ensure compliance. The program lists the mitigation measures contained within
the Initial Study.
2. A procedure for compliance and verification has been outlined for each
mandatory mitigation action. This procedure designates who will take action,
what action will be taken and when, and to whom and when compliance will be
reported.
3. The program contains a separate Mitigation Monitoring and Compliance Record
for each action. On each of these record sheets, the pertinent actions and dates
will be logged, and copies of permits, correspondence or other data relevant will
be retained by the City of San Bernardino.
4. The program is designed to be flexible. As monitoring progresses, changes to
compliance procedures may be necessary based upon recommendations by those
responsible for the program. If changes are made, new monitoring compliance
procedures and records will be developed and incorporated into the program.
The individual mitigation measures and accompanying monitoring/reporting actions follow.
They are presented in the same order as in the Final Initial Study.
April 23,2015
2015-122
Mitigation Monitoring and Reporting Program
Twin Creek Orange Show Road Storm Drain Project
Page 2
I. AIR QUALITY
AIR-1: The project shall comply with the requirements of SCAQMD Rules 402 and 403,
Fugitive Dust, which require the implementation of Reasonable Available Control
Measures (RACM) for all fugitive dust sources, and the AQMP, which identifies
Best Available Control Measures (BACM) and Best Available Control
Technologies (BACT) for area sources and point sources, respectively. This
would include but would not be limited to the following actions:
1. The project proponent shall ensure that construction equipment is properly
maintained and serviced to minimize exhaust emissions.
2. The project proponent shall ensure that existing power sources are utilized
where feasible via temporary power lines to avoid on-site power generation.
3. The project proponent shall ensure that construction employees be informed
of ride-sharing and transit opportunities.
4. The project proponent shall ensure that any portion of the site to be graded
shall be prewatered to a depth of three feet prior to the onset of grading
activities.
5. The project proponent shall ensure that twice daily watering of the site or
other soil stabilization methods shall be employed on an ongoing basis after
the initiation of any on-site grading activity. Portions of the site that are
actively being graded shall be watered regularly to ensure that a crust is
formed on the ground surface, and shall be watered at the end of each
workday.
6. The project proponent shall ensure that all disturbed areas are treated to
prevent erosion until the site is constructed.
7. To reduce the potential for wind erosion, the project proponent shall ensure
that landscaped areas, if any, are installed as soon as possible.
8. The project proponent shall ensure that SCAQMD Rule 403 is adhered to,
ensuring the cleanup of construction-related dirt on approach routes to the
project alignment.
9. The project proponent shall ensure that all grading activities are suspended
during first and second stage ozone episodes or when wind speeds exceed 25
miles per hour.
10. Cover all trucks hauling dirt, sand, soil, or other loose materials, or maintain
at least 0.6 m (2 feet) of freeboard (vertical space between the top of the load
and top of the trailer) in accordance with the requirements of California
Vehicle Code (CVC) Section 23114.
11. Limit all on-site traffic speeds to 15 mph or less.
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IMPLEMENTATION AND VERIFICATION
Planning staff and/or City Inspectors shall verify implementation of the above mitigation
measures.
COMPLIANCE RECORD
When Required: The verification shall be completed as necessary during grading and
construction.
WRITTEN VERIFICATION PREPARED BY:
DATE PREPARED:
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IL GREENHOUSE GAS EMISSIONS/GLOBAL CLIMATE CHANGE (GCC)
GCC-1: To the extent practical and to the satisfaction of the City, the following shall be
incorporated into the design and construction of the project:
• Use locally produced and/or manufactured building materials for at least 10
percent of the construction materials used for the project.
• Use "Green Building Materials," such as those materials that are resource
efficient, and recycled and manufactured in an environmentally friendly way,
for at least 10 percent of the project.
• Limit unnecessary idling of construction equipment. A reduction in equipment
idling would reduce fuel consumption, and therefore, GHG emissions.
• Maximize the use of electricity from the power grid by replacing diesel- or
gasoline-powered equipment during construction. This would reduce GHG
emissions because electricity can be produced more efficiently at centralized
power plants.
IMPLEMENTATION AND VERIFICATION
Planning staff shall verify implementation of the above mitigation measures.
COMPLIANCE RECORD
When Required: The verification shall be completed prior to issuance of building permits.
WRITTEN VERIFICATION PREPARED BY:
DATE PREPARED:
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III. BIOLOGICAL RESOURCES
BIO-1: A pre-construction burrowing owl survey shall be conducted within 10 days prior
to beginning of site grading in the event that burrowing owls occupy the site in
the future. Surveys and relocation, if applicable, shall be conducted between
September 1 and January 31. It is anticipated that the survey protocols will, at a
minimum, reflect the standards of the CDFW Staff Report on Burrowing Owl
Mitigation(2012, as summarized below).
If burrowing owls are found on-site during the pre-construction surveys, they will
be protected in place through the use of buffer zones, visual screens, or other
measures, while construction activities are occurring. The CDFW Staff Report on
Burrowing Mitigation includes appropriate buffer zones based on the timing of
construction that will be implemented, if needed. If occupied burrows are too
close to proposed construction areas to allow for appropriate protection in place, a
qualified biologist will discuss additional avoidance options with CDFW.
If needed, owls will be relocated by a qualified biologist from any occupied
burrows that cannot be avoided by project activities into adjacent suitable habitat.
Suitable habitat is undeveloped land that can meet the burrowing owl's life cycle
requirements (for both foraging and breeding) and is not intended for
development. Suitable habitat must be adjacent or near the disturbance site or
artificial burrows will need to be provided nearby. Once the biologist has
confirmed that the owls have left the burrow, burrows should be excavated using
hand tools and refilled to prevent reoccupation.
Owls shall be excluded from burrows using passive relocation techniques within
the approved limits of disturbance and an appropriate buffer zone. This will be
conducted by a qualified biologist by installing one-way doors in burrow
entrances. The qualified biologist will also determine whether creation of artificial
burrows is necessary as part of the relocation effort.
A Burrowing Owl Relocation Plan (Relocation Plan) prepared by a qualified
biologist shall be submitted to the CDFW for review and approval prior to
relocation of owls. The Relocation Plan shall describe proposed relocation and
monitoring plans and shall include the number and location(s) of occupied burrow
sites and details on adjacent or nearby suitable habitat available to owls for
relocation. If no suitable habitat is available nearby for relocation, details
regarding the creation of artificial burrows (numbers, locations, and type of
burrows) shall be included in the plan. The Relocation Plan shall also describe
proposed mitigation to compensate for impacts to burrowing owls/occupied
burrows within the project alignment.
BIO-2: The Project applicant shall mitigate riparian/riverine habitat impacts in the Twin
Creek Channel at a minimum 1:1 ratio. If onsite mitigation is determined to be
insufficient by the resource agencies, the project applicant shall mitigate any
residual onsite impacts to riparian/riverine habitat through the purchase of
mitigation credits at a ratio of 2:1. The mitigation credits will be purchased
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through the Inland Empire Resource Conservation District (IERCD) to ensure
high quality habitat is preserved/restored within the same watershed as the impact
area.
BIO-3: If project activities are planned during the avian nesting season (approximately
February 1 through August 31), nesting bird surveys shall be conducted within
three days prior to disturbance to ensure birds protected under the MBTA are not
disturbed by construction-related activities such as noise and increased human
presence. Any active nests detected in the area shall be flagged and an appropriate
buffer around the nest location will be established, as determined by the CDFW.
The buffer area is to be avoided until the nesting cycle is complete or it is
determined by the biologist that the nest has failed.
IMPLEMENTATION AND VERIFICATION
Planning staff and/or City Inspectors shall verify implementation of the above mitigation
measures.
COMPLIANCE RECORD
When Required: The verification shall be completed prior to issuance of a grading permit.
WRITTEN VERIFICATION PREPARED BY:
DATE PREPARED:
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IV. CULTURAL RESOURCES
CUL-1: If cultural resources (archaeologic or historic) are discovered during project
excavation activities, a qualified archaeologist and/or historian shall be retained to
assess the nature and significance of the find, diverting construction excavation if
necessary. The archaeologist and/or historian shall have the authority to redirect
ground-disturbing activities in the vicinity of the find until the nature and extent
of the find can be evaluated. Any such resource uncovered during the course of
project-related grading shall be recorded and/or removed per applicable
guidelines, in consultation and cooperation with San Bernardino County Museum
staff and appropriate Native American tribal representatives or the County
Historical Society.
CUL-2: If paleontological resources are discovered during grading, a qualified
paleontologist will be retained to evaluate the resource and then monitor the
remaining ground-disturbing activities. The qualified paleontologist shall have the
authority to redirect ground-disturbing activities in the vicinity of the find until
the nature and extent of the find can be evaluated. Any such resource uncovered
during the course of project-related grading shall be recorded and/or removed per
applicable guidelines, in consultation and cooperation with San Bernardino
County Museum staff. Any recovery activity shall be consistent with applicable
City and/or State regulations.
IMPLEMENTATION AND VERIFICATION
Planning staff and/or City Inspectors shall verify implementation of the above mitigation
measures.
COMPLIANCE RECORD
When Required: The verification shall be initiated during grading upon discovery of any
artifacts, and verified with a letter report after completion of grading.
WRITTEN VERIFICATION PREPARED BY:
DATE PREPARED:
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V. GEOLOGY AND SOILS
GEO-1: Prior to the issuance of improvement plans or a grading permit, the project
proponent shall demonstrate to the City that the siting, design and construction of
all flood control structures within the project limits comply with onsite soil
investigations, applicable regulations of the California Building Code, as well as
the recommendations identified in any project-specific geotechnical investigation
based on actual improvement design, including the potential for subsidence and
liquefaction.
IMPLEMENTATION AND VERIFICATION
At submittal and approval of building permits, whichever is later, to be verified by Building Plan
Check staff.
COMPLIANCE RECORD
When Required: The verification shall be completed prior to issuance of building permits.
WRITTEN VERIFICATION PREPARED BY:
DATE PREPARED:
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VI. HAZARDS AND HAZARDOUS MATERIALS
HAZ-1: During excavation, the contractor shall notify the City immediately in the event
malodorous or discolored soils, liquids, containers, or other materials known or
suspected to contain hazardous materials and/or contaminants are encountered or
spills of hazardous materials occur during on-site demolition/grading/
construction. Earthmoving activities in the vicinity of said material shall be halted
until the extent and nature of the suspect material is determined by qualified
personnel, as determined by the City. The removal and/or disposal of any such
contaminants shall be in accordance with all applicable local, state, and federal
standards.
HAZ-2: During all phases of project construction, the contractor shall maintain adequate
emergency access along Orange Show Road, Lena Road (also referred to as South
Valley View Avenue), and any feeder roads off these project roads within the
project area. This measure shall be implemented to the satisfaction of the City
Engineer.
IMPLEMENTATION AND VERIFICATION
(All measures except HAZ-5) Prior to demolition of the self-storage facility,the developer shall
submit documentation demonstrating completion of the required studies, and implementation as
appropriate of any remediation recommended in the studies.
(HAZ-5) During grading, City shall be notified and any discovered materials remediated
according to applicable standards.
COMPLIANCE RECORD
When Required: The required studies shall be submitted prior to issuance of building permits,
and during grading for discovery of buried hazmat substances.
WRITTEN VERIFICATION PREPARED BY:
DATE PREPARED:
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VII. HYDROLOGY AND WATER QUALITY
HYD-1: Prior to the issuance of a grading permit, the project applicant shall file and obtain
a Notice of Intent (NOI) with the Regional Water Quality Control Board in order
to be in compliance with the State NPDES General Construction Storm Water
Permit for discharge of surface runoff associated with construction activities.
Evidence that this has been obtained (i.e., a copy of the Waste Discharger's
Identification Number) shall be submitted to the City for coverage under the
NPDES General Construction Permit. The NOI shall address the potential for an
extended and discontinuous construction period based on funding availability.
HYD-2: Prior to the issuance of a grading, the project applicant shall submit to and receive
approval from the City of San Bernardino a Storm Water Pollution Prevention
Plan (SWPPP). The SWPPP shall include a surface water control plan and erosion
control plan citing specific measures to control on-site and off-site erosion during
the entire grading and construction period. In addition, the SWPPP shall
emphasize structural and nonstructural Best Management Practices (BMPs) to
control sediment and non-visible discharges from the site. The SWPPP will
include inspection forms for routine monitoring of the site during construction
phase to ensure NPDES compliance and additional BMPs and erosion control
measures will be documented in the SWPPP and utilized if necessary. The
SWPPP shall address the potential for an extended and discontinuous construction
period based on funding availability. The SWPPP will be kept on site for the
entire duration of project construction and will be available to the local RWQCB
for inspection at any time. Some the BMPs to be implemented may include the
following:
• Sediment discharges from the site may be controlled by the following:
sandbags, silt fences, straw wattles and temporary basins (if deemed
necessary), and other discharge control devices. The construction and
condition of the BMPs will be periodically inspected during construction
and repairs will be made when necessary as required by the SWPPP.
• Materials that have the potential to contribute to non-visible pollutants to
stormwater must not be placed in drainage ways and must be contained,
elevated, and placed in temporary storage containment areas.
• All loose piles of soil, silt, clay, sand, debris, and other earthen material
shall be protected in a reasonable manner to eliminate any discharge from
the site. Stockpiles will be surrounded by silt fences and covered with
plastic tarps.
In addition, the construction contractor shall be responsible for performing
and documenting the application of BMPs identified in the SWPPP.
Weekly inspections shall be performed on sandbag barriers and other
sediment control measures called for in the SWPPP. Monthly reports and
inspection logs shall be maintained by the Contractor and reviewed by the
City of San Bernardino and the representatives of the State Water
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Resources Control Board. In the event that it is not feasible to implement
specific BMPs, the City of San Bernardino can make a determination that
other BMPs will provide equivalent or superior treatment either on or off
site.
IMPLEMENTATION AND VERIFICATION
At submittal and approval of final development plans and throughout construction/life of the
project, and by onsite inspections by City staff.
COMPLIANCE RECORD
When Required: The verification shall be completed prior to construction, during grading
activities, after storm events, and annually for the refresher course on education materials. The
site shall be inspected daily for litter, and trash containers shall be emptied weekly.
WRITTEN VERIFICATION PREPARED BY:
DATE PREPARED:
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IX. NOISE
NOI-I: During any project construction work within 200 feet of an existing residential
property, temporary noise reduction fencing shall be installed around the project
work area or within the City right-of-way adjacent to the affected residential
property or properties for the duration of construction in that area. The fencing
shall be constructed of plywood with a total thickness of 1 to 1.5 inches, or a
sound blanket wall may be used. If sound blankets are used, they must have a
Sound Transmission Class (STC) rating of 27 or better.
NOI-2: During trenching within 200 feet of an existing residential property, vibration
levels will be regularly measured at the closest adjacent residential property line
to assure vibration levels do not exceed 0.2 inches per second which, according to
Caltrans, is the level at which continuous vibrations are annoying to people in
buildings. If project-related vibrations exceed this threshold for more than one
continuous hour on a given day, or intermittently for over a four-hour period of
time on a given day, alternative less intense construction methods shall be
implemented (e.g., using smaller equipment or using larger equipment for shorter
periods of time, etc.) to achieve the indicated performance standard. This measure
shall be implemented to the satisfaction of the City Engineer and only where
project construction is within 200 feet of an existing residence along the street
portion of the project.
IMPLEMENTATION AND VERIFICATION
Prior to issuance of an occupancy permit for guarantee, then throughout the life of the project as
needed based on onsite inspections by City staff.
COMPLIANCE RECORD
When Required: The verification shall be completed throughout construction of the project.
WRITTEN VERIFICATION PREPARED BY:
DATE PREPARED:
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X. TRANSPORTATION AND CIRCULATION
TRA-1: Prior to construction of any street portion of the project, the prime contractor shall
submit a Construction Traffic Mitigation Plan to the City for review and approval. The Plan shall
outline how construction traffic, parking, non-vehicular access, and other localized impacts from
project work will minimize traffic impacts on Orange Show Road and Lena Road. The Plan shall
include signage, lane closures, use of signal persons, etc. to help reduce potential traffic impacts
from project construction. This measure shall be implemented to the satisfaction of the City
Engineer.
IMPLEMENTATION AND VERIFICATION
Prior to issuance of an occupancy permit, Planning staff shall verify implementation of the above
mitigation measure.
COMPLIANCE RECORD
When Required: The verification shall be completed as necessary prior to issuance of an
occupancy permit.
WRITTEN VERIFICATION PREPARED BY:
DATE PREPARED:
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XI. UTILITIES
UTL-1: During project construction, existing asphalt and other waste materials will be
recycled or reused onsite to the extent practical, in compliance with the
requirements of City's Refuse and Recycling Division or the County's Solid
Waste Management Division, as appropriate. Any materials that cannot be
recycled or reused as part of this project will be disposed of in an appropriate
manner. This measure shall be implemented to the satisfaction of the City
Engineer.
IMPLEMENTATION AND VERIFICATION
Prior to issuance of an occupancy permit, City Refuse and Recycling Division staff shall verify
implementation of the above mitigation measure.
COMPLIANCE RECORD
When Required: The verification shall be completed as necessary prior to issuance of an
occupancy permit.
WRITTEN VERIFICATION PREPARED BY:
DATE PREPARED:
April 23,2015