Laserfiche WebLink
1' k <br /> 500 12th Street A � � <br /> t <br /> Suite 100 Wood Consultants t <br /> Oakland.CA 94607-4014 <br /> (415)893-3600 <br /> 3� <br /> February 4, 1988 <br /> 882904 <br /> Mr. Hassan Pejuhesh _ s <br /> Senior Sanitary Engineer ��' <br /> F <br /> Office of the State Architect <br /> P.O. Box 1079 JAN 2 9 <br /> Sacramento, CA 95805 ENVIR€3NMENT.."O.- <br /> Subject: Proposal to Revise Preliminary Report', and Condi gljffiWa <br />' Surveys and Soil Sampling at California De:artment of <br /> Transportation Shop 10, 1603 South B Street, Stockton, <br /> California 95206 <br /> Dear Mr. Pejuhesh: <br /> Woodward-Clyde Consultants is pleased to submit the following proposal <br /> to conduct the following : <br /> 1) Preliminary Report <br /> Revise the existing preliminary soil and groundwater <br /> investigation conducted by WCC (Assignment No. 6, OSA Standard <br /> Agreement SA6378) according to RWQCB format. Certain <br /> information must be added to our reportlkto conform with t-he <br /> RWQCB Preliminary Report format guidelines. Based on <br /> discussions with Gordon Boggs of the RWQCB, the appropriate <br /> additional information can be compiled in a brief letter <br />'k attached to our review and report. <br /> f <br /> 2) Soil Gas <br /> WCC will perform a soil gas survey on Caltrans property in the <br /> area surrounding the underground storage tanks. The purpose of <br /> the survey is to obtain data useful in the evaluation of the <br /> lateral extent of hydrocarbons in the groundwater and to help <br /> locate additional monitoring wells. WCC will perform up to two <br /> days of soil gas sampling with soil ga0 probes initially placed <br /> at 50- to 100-foot spacings. If the technique proves effective, <br /> the probe spacing will be decreased in order to make a more <br /> detailed evaluation of the distribution':of organic compounds in <br /> the soil and groundwater. <br /> Soil gas will be extracted from pipes inserted from 2 to 15 feet <br /> in the ground. Each sample will be analyzed;lby gas <br /> chromatography for index volatile organic compounds. <br /> Consulting Engineers.Geologists <br /> and Environmental Scientists AdUk <br /> Offices in Other Principal Cities <br /> 882904-2 <br />