Laserfiche WebLink
� BRM-West,Inc. <br /> RECEIVW 1777 Botelho Drive <br /> Suite 260 <br /> February 15, 1996FEB 16 ,���� Walnut Creek, CA 94596 <br /> (510)946-0455 <br /> ENVIRONMENTAL HEALTH <br /> (510)946-9968(Pax) <br /> PERMIT SERVICES <br /> Ms. Mary Meays <br /> Senior REHS <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 445 North San Joaquin Street <br /> Stockton, California 95201 <br /> Subject: 4th Quarter 1995 Ground Water ERM <br /> Monitoring Event <br /> 1325 & 1515 West Weber Avenue <br /> Stockton, California <br /> Dear Ms. Meays: <br /> On behalf of Catellus Development Corporation (Catellus), ERM-West, Inc., is <br /> pleased to submit this letter summarizing the results of the 4th quarter 1995 <br /> monitoring event recently conducted at Catellus' properties at 1325 and 1515 <br /> West Weber Avenue in Stockton, California. This monitoring event was <br /> performed on November 1st and 2nd, 1995, in accordance with discussions at a <br /> meeting between Catellus and San Joaquin County Public Health Services <br /> Environmental Health Division (PHS/EHD) on 9/7/95, and as documented in <br /> the 9/22/95 letter. Field activities included measuring water levels at all 10 <br /> onsite wells, and purging and sampling S wells previously installed on site <br /> (MW-1A, -2A, -3A, 4A, -5A, -1, -4, and -5). Field notes show that water levels <br /> and total depths were measured between approximately 10:30am and 11:OOam <br /> on 11/1/95. <br /> Samples from the eight monitoring wells were submitted for analysis for <br /> TPH(gasoline) by USEPA Method 5015 modified and for BTEX compounds <br /> using USEPA Method 8020. In addition, samples collected from two wells, <br /> located near Tank Site #2 (MW-1A and MW-2A) were analyzed for TPH(diesel). <br /> Samples collected from the other wells near Tank Site #2 were not analyzed for <br /> diesel because historical data collected between April 1992 and February 1995 <br /> indicate that diesel has never been detected at these locations. Diesel was not <br /> sampled near Tank Site #1 because the removed tank is not known to have <br /> contained diesel during its period of use. <br /> The results of this sampling event are consistent with results from previous <br /> sampling rounds. TPH(gasoline) and BTEX were detected in three wells <br /> (MW-IA, MW-2A, and MW-5) and TPH(diesel) was detected in MW-1A and <br /> MW-2A. Detected concentrations were similar to previous detections. As in <br /> previous sampling events, the other wells sampled during this monitoring <br /> A member of the Environmental <br /> Resources Management Group <br />