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'] rr <br />• <br /> Working To Restore Nature <br /> September 13, 1993 <br />•� ARCO Station No. 548, Stockton, California <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Dissolved gasoline hydrocarbons were detected in groundwater samples collected from <br /> monitoring wells MW-1 and MW-5. Well MW-1 did not contain TOG at concentrations <br /> above laboratory detection limits. RESNA recommends continued quarterly monitoring. <br /> We understand that EMCON will conduct the next quarterly monitoring event in September, <br /> 1993. <br /> We recommend that copies of this report be forwarded to Ms. Mary Meays of the San <br /> Joaquin Public Health Services, P.O. Box 2009, Stockton, California 95241 and Ms. j <br /> Elizabeth Thayer of the California Regional Water Quality Control Board, Central Valley <br /> Region, 3443 Routier Road, Sacramento, California 95827-3098. Please call if you have <br /> questions regarding this report or any aspect of the project. <br /> Sincerely, <br /> R Indus <br />•� e�D Ji. Wq��q�cr J R. hnson <br /> roject Geologist <br /> No. C 13 r <br /> � P <br /> Richard H. Walls <br />• `Ff,�l£ �1V1`�o���� P.E. 43139 <br /> CA <br /> Attachments: Plate 1, Site Vicinity Map <br /> Plate 2, Generalized Site Plan <br />• Plate 3, Potentiometric Map <br /> Table 1, Groundwater Monitoring Data <br /> Appendix: EMCON Associates: Field Notes, Chain of Custody Record, and Laboratory <br /> Analysis Reports <br /> 0629ccar <br /> 3000a-8-s 3 <br />• <br />