Laserfiche WebLink
w <br /> 19449 Riverside Drive, Suite 230, Sonoma, California 95476 <br /> Telephone: 707.935.4850 Facsimile: 7079356649 <br /> CONE ROVERS ��1IC�CE8n n�D <br /> ASSOCIATES LI jl(s V www.CRAworld.com <br /> &ASSOCIATES <br /> April 21,2010 APR 2 6 2010 Reference No. 060223 <br /> ENVIROIVArtENT HEALTH <br /> Mr. Brian Taylor,P.G. PERMIT/SERVECE3 <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 11020 Sun Center Drive#200 <br /> Rancho Cordova,California 95670 <br /> Re: Agency Response to RWQCB's 22 March 2010 Letter <br /> Shell Oil Products US-Former Shell Central Valley Crude Oil Pipelines <br /> Hansen Road near Schulte Road (Cordes Ranch) <br /> Tracy,California <br /> SAP Code 805248 <br /> Incident No. 300562 <br /> Dear Mr. Taylor: <br /> Conestoga-Rovers &Associates (CRA)has prepared this letter on behalf of Equilon Enterprises <br /> LLC dba Shell Oil Products US (Shell)for the Former Shell Central Valley Crude Oil Pipelines <br /> site located at Hansen Road near Schulte Road,Tracy, California (Site). This letter is being <br /> submitted in response to the Central Valley Regional Water Quality Control Board's (RWQCB) <br /> March 22,2010 letter to Shell. The RWQCB's letter provides comments to the following <br /> documents: <br /> • 8 March 2010 Agency Response to Risk Assessment Scope of Work and Work Plan Addendum <br /> (Response) <br /> • 8 March 2010 Shell Oil Products US- Former Shell Central Valley Crude Oil Pipelines (Update) <br /> • 8 March 2010 Residential Well Monitoring Plan (Monitoring Plan) <br /> The following is in response to RWQCB's comments: <br /> 1. Response Letter Item 4: As requested,a minimum of three soil samples will be collected <br /> from above the water table from each of the proposed Area 2,3,and 4 well borings. <br /> Item Number 3: If soil vapor sampling is necessary to support the risk assessment,then a <br /> work plan for installing and sampling vapor wells will be submitted. <br /> Equal <br /> Employment <br /> Oppoduniry Employer <br /> Worldwide Engineering, Environmental, Construction,and iT Services <br />