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SR-6-I (78) ~ C~~: 71 ~I . 6 I - EPWM:CP:LDR:gS/CC1477 (S:\SP1477) Council neetlng: December 13, 1994 Santa Honica, California TO: Mayor and Clty Counell DEC 1 3 199'1 FROM: Clty Staff SUBJECT: Request to Authorlze the Clty Manager to Negot1.ate and Execute a Cooperative Agreement w1.th the State of callfornia, Depart~ent of Transportation (Caltrans) for construction of a Soundwall on the Souths ide of the Santa Monica Freeway (Interstate 10) fron Cloverfield Boulevard to stewart Street INTRODUCTION Th1.s report requests that the Clty Counell autho:rize the City Manager to negotiate and execute a cooperative agreement with the State of Callfornla, Department of Transportatlon (Caltrans) for constructlon of a soundwall on the souths ide of the Santa Monica Freeway (Interstate 10) between Cloverfield Boulevard and Stewart street. BACKGROUND In con)Unctlon wlth the Clove:rfield Boulevard widening project, WhlCh is currently underway, varlOUS improvements to the freeway on and off ramps at Cloverfield wlll be undertaken. One component of the eastbound on-ramp widening on the south-side of the freeway wlll be the constructlon of a soundwall to buffer adjacent resldents from increased nOlse levels. The Cloverfield widen1.ng proJect, the freeway ramp lmprovements, and the soundwall constructlon are all funded by developer agreement traffic mitigation payments which have already been received by the city. DEC 1 3 199't 1 6 I .. ~ Since recent sound level tests conducted by Caltrans indicate that the area south of the freeway bebveen Cloverfield Boulevard and stewart street show that sound levels exceed the threshold minimums in state guidelines, Caltrans has informed the City that they are now willing to reImburse one-third of the total construction cost for the soundwall. DISCUSSION Based on a unIt price of $368 per lineal foot of a typical soundwall, the total cost of this wall is estimated at $700,000. Caltrans is prepared to proceed with the design of the soundwall now and InItiate constructIon during FY 1995-96, subject to the city providIng the necessary funds for the project ($700,000). FOllowing completion of constructIon, Caltrans will reimburse the City for one-third of the cost ($233,333) . In order for Caltrans to participate in the constructIon of the Cloverfield Soundwall Project, a cooperative agreement between Caltrans and the City must be executed. BUDGET IMPACT Traffic mItIgation funds in the amount of approxImately $6,000,000 which have been receIved to pay for the Cloverfield Boulevard Improvement Project is adequate to finance all costs assOCIated with the soundwall and the widening of the street as planned. Funds in the amount of $700,000 are available in ClP Account No. 01-770-415-25191-8905-99145, "Cloverfield Widening proj ect II . Caltrans will reimburse the City one-third of the actual constructIon cost, an amount not to exceed $233,333, subsequent to 2 04 ~ complet~on of construct~on. Th~s reimbursement will be depos~ted lnto Revenue Account No. 01-500-402-00000-0537-10000, IICloverfield Soundwall Re imburse II and the revenue budget wlll be lncreased by $233,333 for FY 1995-96 RECOMMENDATION Staff recommends that the City Counc~l authorize the City Manager to negotiate and execute a cooperative agreement wlth the State of Californlat Department of Transportation {Caltrans) , for partlcipation ~n the constructlon of a soundwall on the souths ide of the Santa Monica Freeway (Interstate 10 ) between Cloverfleld Boulevard and Stewart Street. Prepared by: Cralg Perkinst Director of Envlronmental and PubllC Works Management Anthony Anticht Clty Englneer 3