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FK''101, : —round Zero Ana 1 ys i s PHONE NO. : 209 838 9983 Oct. 15 2008 09: 19AM P2 <br /> Oct 06 oa 09: 18a RIDDL. 1l.00DSCN/-NV CLOS 20995296 P. 1 <br /> Lo/o6/2068 NOW 8, 51 FAX 2019 367 5997 VATRICX RIDDLE btkn Utta.Co fdfu'1,1/VU• <br /> California Regional Water Quality Control Board <br /> Central Valley Rulon <br /> KArl 9.Uneky.Sc)?.P,C.,Chair <br /> Unda S.Adaras Arnold <br /> Seeratarvjor 1102C Sun C=w Drive 42D0,RarchoCacdova,Cal:f0mla 9$670.6514 Schwarsenezger <br /> 'FAwm4mertra1 I-HONE(?l 6,464-329:•FAX(016)464_5645 Cover— <br /> ProrscNon http://wwN.walerbaards.:a yovlxnNolvattey <br /> 3 October 2008 <br /> Mr. Bob Spencer <br /> West Coast Tomato, Inc. <br /> P.O. Box 936 <br /> Palmetto, FL 34220 <br /> WORK PLAN FOR SUBSURFACE INYPSTIGATION AND MONITORING WELL <br /> INSTALLATION, WEST COAST TOMATO, 2900 NARDING WAY, STOCKTON, SAN <br /> JOAQUIN COUNTY <br /> California Regional Water Quality Control Board, Central Valley Region (Central Valley Water i <br /> Board) staff reviewed the 22 September 2008 Workalon for Subsurface <br /> lnvastigation/Maniterfng Well Installation (Work Plan) submitted by Ground Zero Analysis, Inc. i <br /> (Ground Zero)on behalf of West Coast Tomato, Inc. (West Coast Tomato) for the <br /> aboveground storage tank (AGT) release at 2900 Harding Way in Stockton (Site;, c <br /> The Site is in a rural/commerciai area east of Stockton and is currently occupiea by a produce <br /> packaging facility- Western Tomato leased the Site from 1968 until it purchased the property <br /> in 1978. Texaco (now Chevron Gorporation) installed, supplied andlor serviced AGTs at the <br /> Site from 1972 until at least 1978, The Site consisted of four?00-gallon AGTs, two <br /> •2,000-gallon ALTs, and two dispensers. The type of fuel stored at the Site and the AGT { <br /> removai dates are unknown. In 1994, Western Tomato sold the Site to West Coast Tomato of 1 <br /> California who sold it to Chip Arnett/Chipa Properties in 2004. <br /> i <br /> 1 <br /> In March 2004, West Coast Tomato advanced four hand auger borings and drilled two soil <br /> borings in the area of-the formerAGTs_ One baring was advanceci-to-about 6o feet below <br /> ground surface (bgs), and West Coast Tomato noted hydrocarbon odors from seven to 60 feet <br /> logs. Soil samples contained total petroleum hydrocarbons as gasoline(TPH9) and TPH as <br /> diesel (TPHd) at a maximum Concentration of 1,200 milligrams per kilogram (mgkg�and <br /> 7,500 mg/log, respectively. The 60-foot bgs soil sample contained TPHg and TPHd•at <br /> 240 mg/kg and 2,446 mg/kg, respectively. In addition, West Coast Tomato collected one grab <br /> groundwater sample, which contained TP <br /> p t-Ig and TPHd at 45,000 micrograms per liter(;Ig/L) <br /> and 56,000 pg/L. respectively- <br /> The Work Plan.proposes installing four monitoring wells to investigate.the lateral extent of soil <br /> and groundwater,contamination at the Site. Vilest Coast Tomato will collect soil and � <br /> _ groundw4ter •sarnples and place the rrcAwly installed.mor'itoring wells on a quarterly,monitoring <br /> program. ' <br /> l <br /> > <br /> Ca4fornia£nvironnreatal.Prolection Ageney <br /> 2d Rery_•redPnr.J <br />