HomeMy WebLinkAboutCC AG PKT 2011-03-28 #IAGENDA STAFF REPORT
DATE: March 28, 2011
TO: Honorable Mayor and City Council
THRU: Jill R. Ingram, Acting City Manager
FROM: Sean P. Crumby P.E., Director of Public Works
SUBJECT: APPROVE PLANS, SPECIFICATIONS AND ESTIMATE
FOR SLOPE REPAIR ON THE HILLSIDE BETWEEN
GUM GROVE PARK AND HERON POINTE TRACT
CIP NO. PR1101
SUMMARY OF REQUEST:
Approve plans, specifications and estimate to reconstruct the hillside between
Gum Grove Park and Heron Pointe Tract CIP No. PR1101 and authorize staff to
solicit bids.
BACKGROUND:
In January 2010, Southern California experienced a severe rainfall event. The
City of Seal Beach experienced rainfall intensities estimated between 25 year
and 200 year event, with a tornado touching down near the south portion of the
City. .
In response to this severe storm event, the City activated its Emergency
Operations Center (EOC). During full operations of the EOC, the Heron Pointe
Home Owners Association (HOA) notified the EOC about two slope failures, one
originating in the City's Gum Grove Park.
SLOPE FAILURE — Gum Grove Park
The City hired Leighton Consulting, a private geotechnical engineering firm, to
evaluate the situation and provide recommendations.
Leighton recommends a permanent repair that includes fully excavating the
existing soil and placing back competent compacted soil. Staff has been working
with the California Emergency Management Agency (CaIEMA) since the rain
event in January 2010 regarding reimbursement of expenses incurred during the
rain event. Due to the fact that a state of emergency was declared and the City
Agenda Item
Page 2
activated its EOC, CalEMA has informed the City that slope failure repair work is
fully reimbursable for work on public property.
(As noted above, the heavy rain in January 2010 caused a second slope failure,
occurring on the Hellman Ranch asphalt access road. The HOA has made
repairs to the slope.)
FINANCIAL IMPACT:
The estimated cost of construction for CIF
amount is fully refundable from CaIEMA.
budget amendment will reflect amount and
Budget Amendment No. 11- 09 -01)
No. PR1101 is $125,000. This
Under a separate agenda item, a
account number. (Agenda item T" -
ENVIRONMENTAL IMPACT:
This project has been deemed emergency repair work under CEQA Guidelines
15269 (a) and complies with all requirements of the California Environmental
Quality Act (CEQA).
ANALYSIS:
It is recommended that these improvements be constructed before the 2011
winter season. It is estimated the construction will take 3 -4 months to complete.
The plans and specifications have been completed and approved by the City
Engineer and staff is ready to solicit for bids. Plans and specifications are
available for review in the City Engineer's office.
RECOMMENDATION:
It is recommended City Council approve plans, specifications and estimate to
reconstruct the hillside between Gum Grove Park and Heron Pointe Tract CIP
No. PR1101 and authorize staff to solicit bids.
NOTED AND APPROVED:
%
Ji .Ingram
Acting City Manager
Prepared by: Michael Ho, City Engineer