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PUBLIC HEALTH SERVICES <br /> SAN ;OAQLI\COLNTY � <br /> f0GI KHA\NA VD MPH <br /> a � < <br /> Heath Officer <br /> P O Box 2009 • (1601 East Hazelton Avenue) 0 Stockton, Cakfornta 95201 FoR`� <br /> (209) 468-3400 <br /> JOHN MARGOWSKI <br /> WICKLAND OIL COMPANY - <br /> P O BOX 13648 <br /> SACRAMENTO CA 95853-4648 C. 199 <br /> RE: Former Regal Station SITE CODE: 1211 <br /> 6425 Pacific Avenue <br /> Stockton CA 95207 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) <br /> recently had telephone conversations and field communications with representatives of <br /> Western Geo-Engineers (WEGE). PHS/EHD would like to take this opportunity to <br /> clarify the December 22 and 23, 1993 communications between PHS/EHD staff and <br /> WEGE representatives <br /> Evidently during the site inspection of December 22, 1993, the vapor extraction system <br /> (VES) was not operating due to mechanical shut down When PHS/EHD staff inquired <br /> about the operation of the VES and groundwater extraction, in relation to the <br /> investigation of contamination associated with dry cleaning solvents on the property also <br /> owned by Lincoln Properties, the WEGE representative incorrectly inferred that <br /> PHS/EHD staff was requesting that the VES continue not to operate <br /> In regards to the operation of the VES, neither PHS/EHD nor the Central Valley <br /> Regional Water Quality Control Board (CVRWQCB) have placed any restrictions on its <br /> operation The VES has been removing petroleum hydrocarbon contamination from the <br /> soil, decreasing the amount of hydrocarbons available to leach into groundwater <br /> If fact, groundwater contamination continues to be evidenced and requires remediation <br /> PHS/EHD was informed that you have elected to discontinue groundwater extraction and <br /> treatment as a result of communication uith Lincoln Properties The extraction and <br /> treatment of contaminated groundwater appeared to effectively control plume migration <br /> and to reduce the levels of contamination Neither PHS/EHD nor the CVRWQCB has <br /> placed any restrictions on the operation of the groundwater extraction and treatment <br /> system <br /> At your earliest convenience, please re-start the VES and continue evaluation of the <br /> possible effect which periodic groundwater extraction may have on the migration of <br /> solvent contamination associated with Lincoln Properties' site. <br /> A Dh"LVon Of ban Jaaq=QXMry Health rare acrAces qs�> <br />