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40 <br /> PUBLIC HEALTH SERVICES PRuiN <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> X <br /> Karen Furst, M.D., M.P.H., Health Officer p <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <'kaaN <br /> 209/468-3420 <br /> PETER NEMIEC C <br /> ASSISTANT COUNSEL <br /> UNOCAL CORPORATION <br /> DIVERSIFIED BUSINESS GROUP <br /> 376 VALENCIA AVENUE <br /> BREA CA 92823 <br /> RE: UNOCAL DEC 9 91999 <br /> 437 E. Miner Avenue SITE CODE: 1181 <br /> Stockton, CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) <br /> has reviewed the "Work Plan For Additional Subsurface Assessment" dated November <br /> 12, 1999, prepared by Gettler-Ryan Inc. for the above referenced site. <br /> The work plan is approved with the following comments and conditions. Analysis of the <br /> soil samples collected at 10 and 20 feet below surface grade (bsg) in the deep boring <br /> proposed is not required by PHS/EHD. Analysis of the soil sample collected at 65 feet <br /> bsg is required since contamination at this depth was documented in the soil from NP2. <br /> PHS/EHD recommends the well screen on the shallow well extend to 35 feet bsg since <br /> the well screen for NP-1-22 is from 22 to 37 feet bsg and the well screen for NP-2-22 is <br /> from 22 to 47 feet bsg. <br /> Please submit the PHS/EHD well permit applications (2) and $89 permit fee per <br /> application, encroachment permits, access agreements, and health and safety plan. <br /> Once PHS/EHD has approved the well permits, the work can be scheduled. Please <br /> provide PHS/EHD notification of the scheduled work at least 48 hours prior to its <br /> performance. <br /> If you have any questions contact me at (209) 468-3449. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> ' <br /> Margaret Lagorio, Supervising REHS <br /> Site Mitigation Unit <br /> c: CVRWQCB - Mark List <br /> UNOCAL - Bob Boust <br /> SJCADA - David Irey <br /> Gettler-Ryan Inc. — Stephen Carter <br /> A Division of San Joaquin County Heahh Care Services <br />