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" CI~~OF SAN BERNARDIN~~REQ~STNFORoCOUNCIL A~ION '
From: ROGER G. HARDGRAVE
. Preliminary Geologic Evaluation
Subject: of Potential Landslide Areas --
San Manuel Fire North of Patton
Hospi tal GARY S. RASMUSSEN
& ASSOCIATES
Dept: Public Works/Engineering
Date: 5-30-90
Synopsis of Previous Council action:
02-05-90 --Resolution No. 90-44 adopted authorizing execution
of an Agreement for Professional Services, with Gary
S. Rasmussen & Associates.
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Recommended motion:
1. That the Preliminary Geologic Evaluation of Potential Landslide
Areas in the San Manuel Fire Area, prepared by Gary S. Rasmussen
and Associates, be accepted and filed.
2. That the Director of Public Works/City Engineer be directed to
include a project for constructing a debris basin, along Bangor
Street, in the 1991 Capital Improvement Program.
cc: Marshall Julian
Contact person:
Roqer G. Hardqrave
Phone:
5025
Supporting data attached:
Staff Report {, Study
Ward:
4
FUNDING REQUIREMENTS:
Amount:
N/A
Source: IAcct. No.l
IAcct. DescriDtionl
Finance:
Council Notes:
75-0262
Agenda Item No -').0
. 'CIThF SAN BERNARDINc9 - REQ~ST FOR COUNCIL ~ION
STAFF REPORT
The u. S. Forest Service routinely prepares a Burn Area
Report for every major fire. During the assessment of the
report for the San Manuel Fire, the Resource Geologist for the
U. S. Forest Service became concerned about potential stability
problems for fire areas within the burn. This concern prompted
the Geologist to write a letter advising the City of the
potential for landslides within these areas.
At the Council meeting of 2-5-90, authorization was
granted to execute an Agreement for Professional Services with
Gary Rasmussen and Associates. Under the terms of this
Agreement, an independent evaluation of the landslide potential
would be prepared by Gary Rasmussen and Associates.
The study, entitled "Preliminary Geologic Evaluation of
Landsliding, San Manuel Fire Burn, McKinley Mountain Area
Northeast of San Bernardino, California," has been completed.
This evaluation concludes, in part, that complete
failure of these older slides is not expected, and recommends
that a debris basin be provided for the central watercourse
(generally along Bangor Street). Based upon these fundings, we
recommend that no further action be taken, except to include a
debris basin in our next Capital Improvement Program.
We recommend that this evaluation be accepted and filed.
5-30-90
75-0264