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� ABRA <br /> n <br /> 4 J <br /> September 27, 2000 <br /> J �1 Ms Lori Duncan <br /> San Joaquin County Public Health Services <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Re Quarterly Monitoring Report - Third Quarter 2000 <br /> City of Stockton Redevelopment Agency Property <br /> 141 North EI Dorado Street <br /> Stockton, California <br /> SAP Code 118532 <br /> Incident No 97130156 <br /> SJCPHS Site Code No 2436 <br /> Dear Ms Duncan <br /> This report describes the recently completed groundwater monitoring and sampling activities <br /> at the referenced site Cambria Environmental Technology, Inc (Cambria) prepared this <br /> report to meet quarterly reporting requirements issued by the Regional Water Quality Control <br /> Board, Central Valley Region (RWQCB) and San Joaquin County Public Health Services <br /> (SJCPHS) <br /> A groundwater extraction system was in operation at the site from March 2, 1993 through <br /> September 5, 1995 Several soil vapor extraction systems have operated at the site The <br /> most recent soil vapor extraction system operation utilizing activated carbon was terminated <br /> on August 21, 1996 The following table summarizes remediation performed to date <br /> Total Purgeable Petroleum Hydrocarbons Removed (pounds) <br /> LIQUID PHASE VAPOR PHASE CUMULATIVE <br /> 37 3277 3314 <br /> Quarterly Monitoring & Sampling Summary <br /> Oakland c A Groundwater monitoring and sampling for the third quarter of 2000 is summarized below <br /> San Ramon CA <br /> Sonoma, CA <br /> Portland o R 0 Blaine Tech Services, Inc (Blaine) of San Jose, California measured groundwater <br /> levels in and collected groundwater samples from wells MW-I through MW-4, RW-1, <br /> carnbna RW-2, and VEW-2 through VEW-4 on July 27, 2000 VEW-1 was inaccessible due to <br /> Environmental <br /> Technology,Inc a broken box lid and cap dammed in the well casing The samples were transported to <br /> Sequoia Analytical of Morgan Hill, California for chemical analyses <br /> 4merkins street <br /> P 0 Box 259 <br /> Sonoma,to 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />