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PUBLIC HEALTH SERVICES oQ�,N <br /> SAN JOAQUIN COUNTY , <br /> JOGI KHANNA I[D,M.P.H. . <br /> Health Officer <br /> P.O. Box 2009 • (1601 East Hazelton Avrnue) Stockton, California 95201 4�rjg <br /> (209) 468-3400 <br /> ELIOT APPLETON <br /> SIERRA BAY FARM f ' <br /> CREDIT ASSOCIATION !t <br /> P O BOX 8070 �1 <br /> STOCKTON CA 95208 `J JUN 1 7 1992 <br /> RE: Sierra Bay Farm SITE CODE: 4367 <br /> Credit Services <br /> 18775 Tom Paine Rd. <br /> Tracy, CA 95376 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has reviewed the <br /> correspondence from Wm. J. Hunter & Associates dated May 12, 1992 and has the following comments. <br /> Hydropunch sampling results are useful in determining placement of monitoring wells so that repeatable <br /> sampling events can be accomplished. PHS/EHD recognizes that groundwater plume delineation has been <br /> roughly defined and encourages further investigation be carried out to fully delineate the extent of <br /> contamination at the site. Monitoring wells should be installed and sampled quarterly over the next <br /> year(s) to provide gradient and constituent information. <br /> PHS/EHD will accept an addendum to the existing "Problem Assessment Report" (PAR) dated February <br /> 1992 along with any health and safety plan addendum for proposed monitoring well installations. Please <br /> include a timetable for installation and completion for any proposed work along with construction <br /> specifications for the monitoring wells. <br /> Utilizing the preliminary results achieved by hydropunch coIIection, PHS/EHD will review and consider <br /> proposals and costs for remediation alternatives for the contamination currently still in place on site. <br /> PIease refer to Tri-Regional Guidelines, Appendix A under "PAR" for proposals for remediation and <br /> include these alternatives in your addendum submittal by August 20, 1992. <br /> If you have any questions, please contact Michael Infurna, Senior REHS, of my staff at (209) 468-3454. <br /> Jogi Khanna, M.D., M.P.H. <br /> Health It <br /> r <br /> o 1a, RE , Program Manager <br /> Environmental Health Division <br /> LAC/MI:lb <br /> c: Wm. J. Hunter <br /> 2220 Loma Vista Dr. <br /> Sacramento, CA 95875 <br /> A Division of San Joaquin County Health fare Services �� <br />