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PUBLIC <br /> HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> . Ernest M. Fujimoto, M.D., M.P.H., Acting HesitlyWicer • <br /> 304 E.Weber Ave.. 3rd Floor o P. O. Box 388 • Stockton, C4(9520 t038> 1 • �, �P <br /> 209/468-3420 L'Raft <br /> JERRY MOORE MAILED E t 0 GICGr, <br /> MOORE PETROLZUM <br /> 5491 F STREET <br /> BANTA CA 95344 <br /> RE Frank's Exxon #2 SITE CODE: 1464 <br /> 1399 E Yosemite Ave. <br /> Manteca, CA <br /> San Joaquin County public Health Services, Environmental Health Division <br /> (PHS/EHD) has reviewed the "Quarterly Groundwater Monitoring & Remediation Status <br /> Report-' dated August 21, 1995, prepared by Apex Envirotech, Inc , for the above <br /> referenced site <br /> A "Chain of Custody" was not provided for the water samples collected on July 11, <br /> 1995 In addition, air samples were collected from the vapor extraction unit on <br /> July S, 1995 and the results of those analyses were not included in or discussed <br /> in the report <br /> The report did not detail information on pulsing of the vapor extraction system, <br /> such as the organic vapor readings obtained when the system is first restarted <br /> and how long the system is operated before being turned off again <br /> Calculations on the current and total mass of hydrocarbons removed by the vapor <br /> extraction system are also not shown or discussed <br /> Please submit an addendum to this quarterly report that contains all of the above <br /> information by September 25, 1995 In the future, all of this information should <br /> be included in quarterly reports <br /> The report states that if water sample results remain below laboratory detection <br /> limits for TPH-gasoline and BTEX for 3 more quarters that Apex will request site <br /> closure Please be advised that confirmation soil sampling will be necessary <br /> prior to any request for closure <br /> If you have any questions contact Margaret Lagorio at (209) 468-3449 <br /> Donna Heran, REBS, Director <br /> Environmental Health Division <br /> Margaret Lagorio, Lead Senior RENS Diane M. son, RENS <br /> Site Mitigation Unit Supervisor <br /> ML <br /> A Division of San Joaquin County Health Care Services <br />