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iil.V,r ,< <br /> 9 rr Mll <br /> Wm. J. Hunter & Associates P'-"r >; " "o,0w <br /> :- 2220 Loma Vista Dr <br /> Registered Geologists Sacramento, CA 95825 <br /> T etroleum& Mineral Appraisers 95 Xf Q 99 PH f- 20 (916) 972-7941 <br /> FAX (916) 972-1683 <br /> WORKPLAN FOR PLACING TWO (2) GROUNDWATER MONITORING WELLS <br /> AT 2315 NO EL DORADO STREET, STOCKTON, CA <br /> SITE CODE 2080 <br /> Prepared for <br /> San Joaquin Public Health Service <br /> Environmental Health Division <br /> by <br /> Wm J Hunter & Associates <br /> March, 1995 <br /> In September, 1994 , one ( 1 ) soil boring was placed in the <br /> approximate center of a previously removed waste oil on the <br /> property to evaluate minor soil contamination encountered during <br /> prior investigative work conducted in 1993 The soil boring was <br /> programmed to go to 40' to determine the vertical extent of heavy <br /> hydrocarbons detected by that earlier work Soil contamination <br /> was encountered at 26' bgl, and was still present at 40 ' , the <br /> original programmed depth Since this was below recorded <br /> groundwater depths during the past 10 years, it was decided to <br /> continue drilling and convert the soil boring to a monitoring <br /> well . The well was completed on September 30 , water samples <br /> taken on October 3 , 1994 revealed significant levels of BTEX & <br /> TPH-G. The results of the laboratory analysis of those soil & <br /> water samples are summarized on TABLES VIII & IX. Details of <br /> that work is covered in the WJH report titled "Interim Report & <br /> Results of Groundwater Investigation, " dated October 31 , 1994 <br /> The County EHD wrote to Mr Valentine on February 27 , 1995, <br /> requiring that two ( 2) additional groundwater monitoring wells be <br /> placed on the property in order to obtain gradient data & <br /> evaluate the extent of the contamination encountered during the <br /> above work. A copy of that letter is included as EXHIBIT A <br /> Their proposed locations are shown on PLATE IV This workplan is <br /> for the purpose of complying with that request. <br /> 2315 No. El Dorado Avenue, Stockton, CA <br /> PRO !ERTY OWNER. <br /> Stephen Valentine, 6232 Hemet Ave , Stockton, CA 95207 <br /> CONTACT-PERSON: <br /> Steve Valentine, (209) 477-3471 <br /> 1 <br />