Laserfiche WebLink
?' S' <br /> IJ-11ECENED <br /> ID <br /> C A M B R I A <br /> FEB 2 8 2002 <br /> ENVIRONMENT HEALTH February 26, 2002 <br /> PERMIT/SERVICES <br /> Mr Harlin Knoll <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, California 95202 <br /> Re Groundwater Monitoring Report— Fourth Quarter 2001 <br /> Shell-branded Service Station <br /> 3725 Tracy Boulevard <br /> Tracy, California <br /> SAP Code 136186 <br /> Incident No 98996222 <br /> Dear Mr Knoll <br /> Cambria Environmental Technology, Inc (Cambria) prepared this report on behalf of Equiva <br /> Services LLC in accordance with quarterly reporting guidelines issued by the Central Valley <br /> Regional Water Quality Control Board and San Joaquin County Public Health Services, <br /> Environmental Health Division (SJCPHS) <br /> FOURTH QUARTER 2001 ACTIVITIES <br /> Groundwater Monitoring: Blaine Tech Services, Inc (Blaine) of San Jose, California gauged <br /> and sampled all site wells and prepared a summary table of field gauging data and laboratory <br /> analytical results constituents Cambria prepared an additional groundwater analytical data table <br /> (Table 2), site vicinity map (Figure 1), and a groundwater contourlchenucal concentration map <br /> (Figure 2) Cambria also prepared a graph (Figure 3) which is a plot of MTBE concentration in <br /> tank backfill well (BF-1) versus time Cumulative mass removed is also shown on the graph <br /> Blaine's report, which includes the laboratory report, is included as Appendix A <br /> Groundwater Remediation- Monthly groundwater extraction (GWE) using a vacuum truck <br /> began February 7, 2000 During May 2001 the frequency of GWE was increased to twice a <br /> Oakland CA month Between October 17, and December 26, 2001, a total of 24,800 gallons of groundwater <br /> San Ramon CA was removed from wells MW-1A and BF-I A summary of the volume of groundwater extracted <br /> Sonoma CA at the site and an estimate of the amount of total purgeable hydrocarbons as gasoline (TPHg), <br /> Cambriabenzene, and methyl tertiary butyl ether(MTBE)removed is presented in Table 1 <br /> Environmental <br /> Technology,Inc <br /> leerkms Street <br /> P 0 Box 259 <br /> Sonoma CA 95476 <br /> Tel(707)935-4850 <br /> Fax(707)935-6649 <br />