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�1�'^r!^p�� .,�xTo_..•x .,.�„„m mgr9mmR—�`^'aw'T�"P'Se;�"4'^T�...nm.+.-._n-r.w. � — 2wN ' �mr--=rpan+v+rRn< ....on wrnmw- <br /> I <br /> Lusix <br /> GE xoGICAL AND�NWR-,O HENTAL -J�ICES <br /> September 14, 1995 �] <br /> 524-001 /� 1 <br /> Ms Linda Turcatte <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> Post Office Box 388 <br /> Stockton, California 95201-0388 <br /> Subject Work Plan for Vent Well Installation <br /> `vlarci s Diesel 2969 Loomis Road, Stockton, California <br /> Dear Ms I U]Cdtte <br /> At the request of ru n and Margaret Marci, owners of the Marci s Diesel site in StoL'kton <br /> Lush (jeosciences is plea,ed to present this Work Plan to assess the extent of contamination and <br /> to evaluate appropriate options For mitigation of contamination at the site The site is located at <br /> 290) Lo(--r 1,, Road in the soutlieastern portion of Stockton, California, as indicated by the Sale <br /> Location Map, Figuie I The site vicinity is used mainly for light industrial and manufacturing <br /> bu,,inesse�! <br /> I, <br /> Background <br /> I� <br /> It is oui undetntancliig that the site formerly had two 5,000-gallon UST's for fuel <br /> Ili ev �,Nere removed in March 1987 Excavation by Thorpe Oil Co in March 1988 reached a <br /> total depth of 281« 29 ft Soil samples at that depth showed detectable xylenes and total volatile <br /> petroleum hv&ocarbons the excavation was backfilled with clean material Three groundwat_:r <br /> me initoring have been installed at the site (April, 1992) and monitored petiodicall , 5tnc.e <br /> that time Results of analyses of samples from the soil borings in which the wells were <br /> constructed are summarized in Table l The site configuration is shown on the attached <br /> Generalized Site Plan, Figure 2 Groundwater near the former tank locations has periodically <br /> shove-n some contamination by diesel fuel and volatile fuel constituents at low to non-detectable <br /> levvels (Table 2) The groundwater gradient has varied to all points of the compass in the 25 <br /> threes measurements have been made, the most c un.�mon direction is southeri) (l able 3) <br /> t+ <br /> 3560 BusNESs Di,� , SLATF 120 • SACRAMENTO, CA 95820 4 (91.6) 737-9294 FAX (916) 737-9298 <br /> „mw — _ 10 — <br />