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EDMUND EL BROWN Jo. <br />GOVERNOR <br />GAMORN IA <br />Water Boards <br /> <br />MATTREw RODRIGUEZ <br />SECRETARY FOR <br />ENVIRONMENTAL PROTECTION <br />Central Valley Regional Water Quality Control Board <br />20 June 2017 <br />Mr. David Atwater <br />Van De Poi Enterprises, Inc. <br />P.O. Box 1107 <br />Stockton, CA 95201 <br />Soil Vapor Investigation Work Plan, Pacific Pride, 3147 South El Dorado Street, Stockton, <br />San Joaquin County <br />Central Valley Regional Water Quality Control Board (Central Valley Water Board) staff <br />reviewed the Soil-Vapor Investigation Work Plan (Work Plan) dated 25 April 2017, submitted on <br />your behalf by Advanced GeoEnvironnnental, Inc. (AGE). The Pacific Pride property is located <br />at 3147 South El Dorado Street in Stockton (Site). <br />In the Work Plan, AGE proposes to advance and collect samples from two soil vapor borings, <br />SV-1 and SV-2. AGE proposes to collect a shallow soil sample from approximately 5 feet below <br />ground surface (ft bgs) and a soil gas sample from approximately 6 ft bgs from each boring. <br />AGE will analyze soil samples for total petroleum hydrocarbons as gasoline (TPH-G) and diesel <br />(TPH-D), and volatile organic compounds (VOCs) including: benzene, toluene, ethylbenzene, <br />and total xylenes (BTEX), naphthalene, fuel oxygenated compounds (MTBE, DIPE, TAME, <br />ETBE and TBA), 1,2-dichloroethane (1,2-DCA), and ethylene dibronnide. AGE also proposes <br />analyzing the soil gas samples for TPH-G, VOCs including BTEX, naphthalene and isopropyl <br />alcohol (the leak detection compound), and percent oxygen. <br />Central Valley Water Board staff concurs with AGE's proposal to advance borings SV-1 and <br />SV-2 and collect soil and soil gas samples from each boring. Please submit a Soil Gas Sample <br />Results Report by 30 September 2017. <br />If you have any questions, please contact me via phone at (916) 464-4792 or via email at <br />vfischer@waterboards.ca.gov. <br />Vera Fischer, P.G. <br />Engineering Geologist <br />cc: Mr. Nuel Henderson, San Joaquin County Environmental Health Department, Stockton <br />Mr. Timothy Cuellar, Advanced GeoEnvironmental, Inc., Stockton <br />KARL E. LONGLEY Scip, P.E., CHAIR I PAMELA C. CREEDON P.E., BCEE, EXECUTIVE oFFiCER <br />11020 Sun Center Drive 9200, Rancho Cordova, CA 95670 I vAilwAraterboards.ca.govicentralvalley <br />ej RECYCLED PAPER