HomeMy WebLinkAbout03. Update on Miner Road and Other Storm Damage 30
Central Contra Costa Sanitary District
March 14, 2017
TO: ADMINISTRATION COMMITTEE
VIA: ROGER S. BAILEY, GENERAL MANAGER
ANN SASAKI, DEPUTY GENERAL MANAG,$1 ,
PHIL LEIBER, DIRECTOR OF FINANCE AND ADMINISTRATION ,
FROM: SHARI DEUTSCH, RISK MANAGEMENT ADMINISTRATOR-
SUBJECT: UPDATE ON MINER ROAD AND OTHER STORM DAMAGE
INTRODUCTION
On January 11, 2017, after days of heavy rain, a large sinkhole enveloped two Central
San sanitary sewers that run along Miner Road in Orinda. As a result, these sewer
lines, a 15-inch sewer and an 18-inch sewer, ruptured and heavily diluted sewage was
discharged into Lauterwasser Creek which flows into the San Pablo Reservoir, a
drinking water reservoir. The City of Orinda owns a 72-inch storm drain that is located
at the bottom of the sinkhole.
That same day, Central San was notified of a small sinkhole on North San Carlos Drive,
near Heather Farms Park in Walnut Creek. Repairs were performed by Central San's
paving contractor at a cost of $17,767.04. Central San also received and paid a claim
for vehicle damage arising from this sinkhole of $4,351 .49. The total cost for this event,
including Central San's labor, equipment and materials was $29,557.13.
SIGNIFICANT EVENTS REGARDING MINER ROAD
The Collection System Operations Division responded immediately upon notification of
the Miner Road sinkhole and implemented bypass pumping around the two broken
sewer mains. Since then, staff acquired rental equipment and transferred pump watch
duties to Rain For Rent under a contract as emergency protective measures. Staff
estimates that approximately $120,000 of additional expense was incurred through
February 21, 2017 and estimates an ongoing expense to maintain the bypass pumping
at $70,000 per month.
On February 14, 2017, a Presidential Declaration of a Major Emergency was issued for
the Winter Storms of 2017, regarding damages occurring from January 3-12, 2017.
Administration Committee
March 14, 2017
Page 2
On March 2, 2017, the Board proclaimed a local emergency for Central San's two
storm-related events occurring within this same time frame.
Staff has since prepared and provided an updated Initial Damage Estimate to the
County Office of Emergency Services that incorporated the cost of the Heather Farms
sinkhole and the extended cost to maintain bypass pumping on Miner Road through
June 2017.
The Federal Emergency Management Agency and the County Office of Emergency
Services have visited the Miner Road and Heather Farms sites along with other
incidents around the County. The State has 90 days from the date of the Presidential
Declaration of a Major Emergency to submit a Preliminary Damage Assessment to the
Federal Emergency Management Agency for its consideration.
SUBSEQUENT DEVELOPMENTS
Since a number of subsequent storm-related events occurred after the time period
covered by the February 14, 2017 declaration, the Federal Emergency Management
Agency is considering whether to recommend a second emergency declaration or to
extend the time included in the original declaration. If the original declaration is
extended to include damages occurring in February, the pool of potential applicants and
the severity of potentially eligible incidents for federal disaster funding will grow
significantly. This may result in a larger allocation of funds or could restrict the
allocation of funds to only the most severe incidents.
The City of Orinda has not yet been able to reach agreement with an adjacent
homeowner regarding emergency rights of entry for the repair work. Depending on the
outcome of negotiations this week, the City of Orinda will 1) start the planned repair
work shortly, 2) modify the design and begin work later than anticipated, or 3) install a
temporary bridge and revisit the permanent repair in two years. The two-year delay
arises from non-emergency environmental review, permitting and funding requirements.
As a result, Central San is now considering methods to install a temporary repair that
would last two years or a permanent repair. The options available to Central San will
depend on how, when and if the City of Orinda resolves the matter with the adjacent
homeowners. This will also require staff to submit an updated Initial Damage Estimate
to the County.
Staff will provide an update on this situation as additional information becomes
available.
C:\Users\CGranzeila\AppData\Local\Microsoft\Windows\Temporary Internet FiIes\Content.0utIook\IFG8EC1 Minter Storms Update
Admin Committee 03-14-2017(003).docx