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TE =�drl . 1, I C. , 9 2 8 . 47 No . 002 F . 0 <br /> LIE OF � LIFORNIA _ .I PETE WILSON, OOrernoF <br /> CALIFORNIA REGIONAL WATER OLIALITY CONTROL BOARD' " - <br /> CEti+T RAL VALLEY REGION <br /> 3443 RQUTIER ROAD. SUITF A <br /> SAGRAMENTO. GA 9$$27-3456 <br /> FIHC)NE i616) 365-5600 <br /> �Ak: �s,s1 as,-s�se <br /> 19 december 1991 <br /> Ms. Carmelita Cozad <br /> Cozad Trailer Sales <br /> 4907 Waterloo Road <br /> Stockton, CA 95215 <br /> COZAD TRAILER SALES, 4907 WATERLOO ROAD, STOCKTON, SAN JOAQUIN COUNTY <br /> lour letter, dated 22 November 1991, requested concurrence with closure of this <br /> site. A review of the file revealed that an underground gasoline storage tank <br /> was removed in 1989; soil in the excavation was contaminated with 124 mg/kg TPH <br /> as gasoline. In November 1990, a boring was drilled near the former tank pit to <br /> about 50 feet and low levels of benzene, toluene, ethyl benzene, and xylenes were <br /> found at that depth. <br /> Three monitoring wells were installed in July 1991 . Ground water samples from <br /> MWI contained 0.7 ppb toluene and from MW2 contained 1 .7 ppb toluene, 1 .0 ppb <br /> xylenes, and 50 ppb TPH as gasoline. MW3 contained no detectable hydrocarbons . <br /> Ground water samples collected in all three wells in August and September 1991 <br /> Contained no detectable hydrocarbons. Ueptn to ground water in September 1991 <br /> was about 96 feet. <br /> Based on the information provided, Board staff has determined, and the San <br /> Joaquin County Environmental Health Division concurs, that appropriate response <br /> actions have been completed, that acceptable remedial practices were implemented, <br /> and that, at this time, no further investigation, remedial or removal action, or <br /> monitoring is required at Cozad Trailer Sales, 4907 Waterloo Road, Stockton. <br /> Nothing in this determination shall ccnstitute or be construed as a satisfaction <br /> or release from liability for any conditions or claims arising as a result of <br /> past, current , ur future operations at this location. Nothing in this <br /> determinatior 15 intended or shall be construed to limit the rights of any <br /> parties with re�Lact to claims arising out of or relating to deposit or disposal <br /> at any other location of substances removed from -the site. Nothing in this <br /> determinat _r ' S intended or shall be construed to limit or preclude the Board <br /> or any other agency from taking any further enforcement actions. <br /> This letter does not relieve the tank owner of any responsibilities mandated <br /> under the California Health and Safety Code and California Water Code if <br /> existing, additional , or previously unidentified contamination at the site causes <br /> or threatens to cause pollution or nuisance or is found to pose a threat to <br /> public health or water quality. Changes in the resent or public land use q Y e ma <br /> 9 P P Y <br /> require further assessment and mitigation. <br />