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437 Miner Avenue <br /> Page 2 <br /> PHS/EHD stated in correspondence dated June 3, 1997, that it was anticipated that a well placed in the <br /> proposed location approximately 210 feet in a current downgradient direction from former tanks pits <br /> would be non-detect. This statement should not be misinterpreted to infer that PHS/EHD concurred that <br /> the plume was not migrating. Until such time as the full extent of the groundwater plume is determined, <br /> it is impossible to ascertain whether or not the groundwater plume is migrating. <br /> Until such time as the full extent of the soil and groundwater contamination is determined it is premature <br /> to assign a risk status. However, since there is not a drinking water well on the site, nor are there any <br /> known vapor migration pathways, it is unlikely that the site poses an immediate significant human health <br /> risk. <br /> Unocal is still out of compliance with adopted policies, regulations and law and PHS/EHD's regulatory <br /> directives dated July 11, 1996,January 30, 1997, March 18, 1997, and June 3, 1997. An administrative <br /> office hearing has been scheduled for July 10, 1997 at 10:30 AM in the office of PHS/EHD to discuss <br /> Unocal's compliance status. <br /> If you have any questions please contact me at (209) 468-0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Mary Meays, Senior REP Margaret agorio, REHS <br /> Site Mitigation Unit Supervisor <br /> cc: Elizabeth Thayer, CVRWQCB <br /> cc: David Irey, San Joaquin County Deputy District Attorney <br /> cc: Stephen Carter, GeoStrategies 3164 Gold Camp Ste. 240, Sacramento CA 95670 <br /> cc: Joel Greger, MPDS 2401 Stanwell Ste. 300, Concord CA 94520 <br /> cc: Sutter Office Center, 2001 Union Street Ste.300, San Francisco CA 94123 <br />