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7 <br /> F <br /> L <br /> PUBLIC HEALTH SERVICES ,4►.D� . <br /> -� SAN JOAQUIN COUNTY a <br /> JOGI KHANNA bf.D.,htp,H,Health OfficeP.O,Box 2009 • (1601 Bast Hazelton Avenue) Stockton,California 95201 <br /> (209)468.3400 <br /> December 3, 1990 <br /> i V <br /> Doc Raymond <br /> Raymond Investment Corporation Co <br /> i P.O. Box 567 <br /> i Stockton, CA 95203 <br /> E . <br /> RE: Pony Express Courier Corp. IN REPLY REFER TO SITE CODE: 1690 <br /> 959 Moffat <br /> Manteca, CA 95336 <br /> We have completed our review of your Site Assessment Report dated <br /> September 1990. We agree that the depth to seasonal high <br /> groundwater is 15 feet and that the soil at the site is sandy loam. <br /> The inspector present during the underground tank removal noted a <br /> i strong hydrocarbon odor and staining of the soil at - fill end of <br /> the tank. According to Tri-Regional Guideli:i�s and the LUFT <br /> manual, a groundwater investigation is required due to the above <br /> factors. A Preliminary Repo t, as ouUined_in___the,.Tri-Regional <br /> .� Guidelines, Appendix A, s to be submitted to this offibe by <br /> Januar ,_1991. A Work Plan for installation of monitoring wells <br /> should be incorporated into this.repert. <br /> Detection limits used for the soil sampled following tank removal <br /> and the subsequent re-excavation were not sensitive enough. In the <br /> future use the detection limits listed in the LUFT manual for soil <br /> and water samples. <br /> The existing excavation should be Pilled with clean soil. <br /> Stockpiled soil should be resampled and the sample results should <br /> verify the soil is clean before it is placed back into the <br /> excavation. Discreet samples are rscammeaded for this <br /> verification. If you have any questions contact Ma*_garet Lagorio, <br /> Senior REHS, at (209) 468-3449. i <br /> r <br /> s <br /> Jogi xhann M.D., M.P.H. <br /> Health 0 Z1la4tffg <br /> aur a A. , Proram Manager <br /> vironmental Health Division <br /> i <br /> LAC/ML:nr <br /> ---- -- - — `1 T �------- - —_ — -- -- - -------�_ <br /> acs C. Wm. Hunter and Associates _-- <br /> 2701 Cottage Way, Ste. 25 <br /> Sacramento, CA 95825 ATTACWVt>:NT <br /> TO WORKPLAN . <br /> sG k.) !v%•I t f..r <br /> A Division olsan joagoin County Health Gre Servicrl <br /> RECEIVED 7 191%el� <br />