SR-6F (7)
(4~-fc 4'
~cf~~ S97
G(;ytkac;f #= '319g C C.$
EPWM CP AA RS tJ s \sp1327\cc1327a3 wpd
Council Meetmg October 14,1997 Santa MOnica, Cahfomla
TO Mayor and City Council
FROM City Staff
SUBJECT Recommendation to Authorize the City Manager to Negotiate and Execute
an Amendment to Continue the Contract with the City of Los Angeles for the
Dry-Weather Runoff Diversion from the Plco-Kenter Storm Drain to the
Sanitary Sewer System
INTRODUCTION
This report recommends that the City Council authonze the City Manager to negotiate and
execute an amendment to the contract with the City of Los Angeles to contmue diverting
dry-weather low flow runoff from the Plco-Kenter storm drain mto the sanItary sewer
system The ongmal diversion agreement has been extended two tImes and the current
agreement term Will expIre on October 31, 1997 This amendment WIll extend the
agreement to October 31,2000
BACKGROUND
For many years, the Plco-Kenter storm dram has been a source of concern because Its dry
weather flow contains high concentrations of biological and chemical contammants When
released Into the Santa MOnica Bay, these contammants pose a potential risk to public
health The flow IS highly vanable and difficult to quantify, but for the purposes of this
contract It IS assumed that one-half of the flow onglnates In the City of Los Angeles and
one-half ongmates m Santa MOnica
~ 6F
1
...
"
.
OCT f ,. 1997
In 1991, the City of Santa Monica, the City of Los Angeles, and the County of Los Angeles
constructed a temporary "by-pass line" to carry dry weather low flows from the Plco-Kenter
storm drain six-hundred feet out mto the ocean This project prevented the accumulation
of low flow storm water at the outlet of the Plco-Kenter drain which over the summer
months becomes stagnant and unsightly
In an effort to further reduce pollution from entenng the Santa Monrca Bay, on January 13,
1992, the Cities of Los Angeles and Santa Monrca entered Into an agreement (contract
number 84370) to temporanly divert dry weather urban runoff flows from the Plco-Kenter
storm drain Into the sanitary sewer system to be transported to and treated at the Hypenon
Wastewater Treatment Plant As a result of thiS agreement, diverSion pump facIlities were
constructed at the terminus of the Plco-Kenter storm drain
One condition of the diverSion agreement IS that the City of Santa MOnica must continue
to pursue the deSign and construction of the dry weather runoff reclamation facIlity for the
Plco-Kenter storm drain It IS anticipated that the deSign of the facIlity Will be complete by
early 1998 and construction WIll be complete by mld-1999 Staff IS currently negotiating
a cost shanng agreement for the construction of the facIlity With the City of Los Angeles
2
BUDGET/FINANCIAL IMPACT
According to data received from the City'S Wastewater DIvIsion, approxImately thIrty-nine
(39) mIllIon gallons of dry weather flow are dIverted to the Hypenon Wastewater Treatment
Plant each year This results In a sewage treatment cost of approximately $140,000 per
year, of whIch one-half IS paid by the City of Los Angeles and one-half IS paId by Santa
MOnica per the agreement Santa MOnica's share ($70,000) IS already budgeted In
account number 31-500-661-00000-5512-00000
RECOMMENDATION
Staff recommends that the City CouncIl authorrze the CIty Manager to negotiate and
execute an amendment to continue the agreement with the City of Los Angeles to divert
dry weather runoff from the Plco-Kenter storm draIn Into the sanItary sewer system
Prepared by Craig Perkins, DIrector of Environmental & Public Works Management
Anthony Antlch, PE, CIty Engmeer
^
"