HomeMy WebLinkAbout37-Planning
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c.", OF SAN BERNARD.O - REQUAT FOR COUNCIL A~ON
From:
Frank A. Schuma
Subject: Construction of a Settling Basin and
Return Sludge Pump Station at the
Wastewater Treatment Plant
Dept:
Planning
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Date:
February 18, 1986
Mayor and Council Meeting of
March 3, 1986 @ 2:00 p.m.
Synopsis of Previous Council action:
None
Recommen1ed motion:
Adopt the Negative Declaration for the installation of a settling basin and
return sludge pump station at the Wastewater Treatment Plant to upgrade the
plant to 28.0 MGD capacity and improve plant reliability. The facility is
located at 299 Blood Bank Road.
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Signature
Contact person:
S t. -' t tt h d Project description, safety co. nsid-
uppor 109 ua a a ac e : _________ _
erations, mitigation measures, location map
FUNDING REQUIREMENTS: Amount:
Frank A. Schuma
Phone:
5057
Ward:
3
Source:
Finance:
Council Notes:
75-0262
Agenda Item No. c:;; 7
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ATTACHMENT A
Section A - General Information, Item 5 - Description of Project
Construction of secondary treatment facilities to upgrade an existing WWTP to
28.0 MGD capacity and improve plant reliability.
The project consists of construction of a 140-foot diameter, settling basin
and a Return Sludge Pump Station which is approximately 2,600 square feet of
floor area. Both structures are of reinforced concrete design and require
excavation for below-grade structures. Utility work aS$ociated with the
project includes existing electrical duct bank relocation and wastewater
piping modifications. All work on the project will be performed at the
project site. This site is located within the treatment plant property
boundary adjacent to the existing Unit I portion of the treatment plant.
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A TT ACHME NT B
Section G - Human Safety Potential, Item 22
Typically associated with heavy construction is .the potential for minor im-
pacts from noise and dust generated by equipment utilized by the contrac-
tors. Mi t i gat i on measures shall be pract iced by the Contractor and are i n-
cluded within the scope of project. Therefore, personnel at the facility
would be protected from the work and the surrounding community would not be
subject to impact from these activities.
Operational impacts of the proposed treatment facilities on the human element
should be insignificant from the standpoint of personnel directly associated
with the facility, i.e. plant personnel and neighbors. However, one potential
impact from operation of the completed project will involve noise from a
standby electrical generator. The 500 Kilowatt generator will be installed in
the Return Sludge Pump Station. Noise emissions emanate from the generator
engine and the radiator fan. Noise levels from both sources will meet Federal
guidelines for sound pressure levels. The generator will be operated only on
an intermittent basis.
The purpose of the project, i.e. improving plant reliability will be of
significant benefit to both the community of San Bernardino and downstream
communities of the Santa Ana River. By improving plant reliability, the
project will enable the plant to consistently meet existing discharge
1 imi tat ions imposed upon the facil i ty by the Envi ronmenta 1 Protection Agency,
and the State Water Resources Control Board for protection of the pub 1 i C"
health.
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ATTACH/1ENT C
Section I - Mitigation Measures
Under the tenns of his contract to complete the. subject facilities, the Con-
tractor is requi red to take measures to insure mi nimum dust and noi se impact
on the public from his liork. Dust control may include spraying, palliatives,
and/or modified operations. Noise control measures will be controlled through
prudent operational procedures by the Contractor.
Odor and noise control features have been included into the treatment facility
design to insure an environmentally sensitive project. P.otential sources of
odors (sludge wet wells and sumps) have been eliminated from the project to a
great extent. The remaining sump will be covered to mitigate any possible
source--; Also, a standby e 1 ectri ca 1 genera tor wi 11 be part of the Return
Sludge Pump Station structure. Noise mitigation incorporated into this design
includes: exhaust silencing, acoustical treatment of the generator equipment
and roOOl, and 1ayout,of the installation to least impact the public.
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