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B&V WASTE SCIENCE AND TECHNOLOGY CORP. <br /> 2300 Clayton Road,Suite 220,Concord, California 94520-2100, (510) 246-8010, Fax: (510) 246-8082 <br /> East Bay Municipal Utility District BVWST Project 40429.200 <br /> Stockton Service Center BVWST File E.2 <br /> September 2, 1993 <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> 445 N. San Joaquin Street <br /> Stockton, California 95201 <br /> Su c s Addendum to Work Plan <br /> Attention: Diane Hinson <br /> Ms. Hinson: <br /> This letter presents an addendum to the July 1993 .Additional Site <br /> Assessment and Quarterly Monitoring Work Plan for the East Bay Municipal <br /> Utility District's (District) Stockton Service Center presented by B&V <br /> Waste Science and Technology Corp. (BVWST) . Modifications to the sampling <br /> proposed in the work plan are documented in this addendum. <br /> The initial phase of the field investigation indicated levels of petroleum <br /> hydrocarbons above the detection limits in HP-1 , HP-4, and HP-5. These <br /> concentrations are listed in the following table. Based on the results of <br /> the initial phase of the field investigation, (the installation of <br /> HydroPunch II® samples HP-1 , 2, 3, 4, and 5) , the remaining sampling <br /> locations have been modified. <br /> Table A-1 <br /> Analytical Results for <br /> HydroPunch II® Samples <br /> Sample q <br /> T'H Senzcrie Tolri+en�. .: I Eth'llfnzen eases <br /> HP-1 230 ND ND 0.8 ND <br /> HP-2 ND ND ND ND ND <br /> HP-3 ND ND ND ND ND <br /> HP-4 45,000 1,300 7,600 760 4,400 <br /> HP-5 3,900 0.5 21 43 79 <br /> ND = Not detected above detection limits. <br /> 93122 <br /> 40429200\addendum.wp <br />