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R <br /> 1 <br /> Advanced <br /> r <br /> n Ir r <br /> Ge®Environm' ental Inca <br /> 06 Tune 1998 <br /> AGE-NC Project No,95-0142 <br /> ENVIRONMENTAL-HEALTH DIVISION <br /> r, ; 304,Er"Weber Ave TOrd�Ploor _ rs <br /> Mr Harlan Knoll P O. Box 388, S ocktan1CA 95201-0388 <br /> Apprbved eg � r <br /> San Joaquin'County,PHS-EHD Denied,` ❑ <br /> P O Box 388 Condi#io1�s �.,., w.cr .Q �r11,2c. <br /> Stockton, CA 95201 C�c�►,, r�.►� <br /> Date by <br /> _466LAiZ <br /> Subject: Work Plan for Depth Discrete - Hydrocarbon Assessment- <br /> STOCKTON PLATING <br />' 632 South=El Dorado Street, Stockton, California , <br /> Dear Mr Knoll <br /> In accordance with a request from Mr Jeff Setness of HARTMANN & SETNESS Advanced <br /> Ge Environmental, Inc (AGE) has prepared this work plan for dissolved hydrocarbon assessment <br /> for the site located at 632 South El Dorado Strect, Stockton, California (the site) ' <br /> E ' <br /> SOIL BORING AND SAMPLING RESULTS <br /> Oni22 April 1998, three hydro-punch grab water samples were collected from the site Additional <br /> one soil boring was established in the area of the former UST TK1-90 The soil boring was advanced <br /> to a total depth of 7,0 feet below surface grade(bsg) Soil samples were collected fiom depth between <br /> 40 feet and 70 feet bsg <br /> r r <br /> Sol encountered aty a depth of 45 and 60 feet demonstrated the highest concentration of <br /> hydrocarbons Whale hydrocarbons detected at depth of%feet and 55 feet bsg were lowest detected <br /> in the'soil samples analyzed This zone of lower concentration as a possible indication of a water <br /> level indicator over a significant duration,thus'dilutang or diffusing the hydrocarbons an contact with <br /> the soil at these depths A copy,of the data as attached and'the data v.ill be supplied in following <br /> quarterly report , z <br /> M <br /> 1 r <br /> Al <br /> SCOPE OF WORK <br /> Based on the,depth of hydrocarbon impacted soils,additional depth discrete wells should be installed <br /> of the vertical definition of hydrocarbons is required for the site Therefore AGE recommends the <br /> installation of three additional wells on the site <br /> 4005 North Wilson Way, Stockton, California 195205 <br /> Telephone(209)467-1006 FAX(209)467-,1118 <br /> p <br /> 1 <br /> L <br />