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Riverside -Cement:Company H _ H <br /> I PC <br /> Environmental Office: Phone: (909)683-6458 <br /> 1490 Rubidoux Boulevard • Riverside,California 92509 PO(nE: 909768FUJ6f!; 705 <br /> Mailing Address:.P.0.Box 56040 • Riverside,*CAI ifornia 92517 Fax/Voice Mail: (909).68 $$703 . <br /> January 21, 1994 <br /> Margaret Lagorio-, Senior REHSI. <br /> Public Health Services <br /> San Joaquin County - <br /> P. Q:t Box 2009 <br /> Stockton, CA 92501 <br /> RE: Riverside Cement Stockton Gasoline.Tank Site`.Closure <br /> Dear Margaret: <br /> I enjoyed meeting you on January 11th and discussing:the-final:closure aspects of the <br /> gasoline tank site with Bill Hunter.-,As I, am just new this project, I appreciate your <br /> patience and consideration;inu working;with;=me. <br /> The current situation with the filled srte,,as.Bill Hunter _and I:.perceived it; is that the site <br /> was closed with :clean sides,and-bottoms.inyadditionAo;the clean water that se'eped;in. <br /> overnight. Our perception is that the testing constituted a'clean closure`andAhe subject <br /> would be closed with no:further testing and no further costs: <br /> However, you feel that the`testing done to date;-including the previous water testing, is <br /> not conclusive to prove closure, due to the'close water table proximity to the site and <br /> that surrounding areas-are already contaminated. You recommended that further <br /> ground water investigation is required to prove clean closure and that a plan should <br /> preface the actiiahmonitoring well (orYwells) ail' the subsequent testing: 'I lie—short term V <br /> plan, as well as future plans, need"clarification from your <br /> I. What specific chemicals/metals testing will provide evidence of clean <br /> closure? <br /> 2. Must all the first,time monitoring well testings be N.D.°to start.the clean <br /> }_. closure process? = ; . <br /> -. . <br /> 3:: From the time the monitoring wells areAn place and-sampled, when can <br /> qtr these-sampling be done (providing the firstYsampling,is, satisfactory)7, ;,C # <br /> 4.. "Rill only two monitoring well tests of N.D. '(or some other minute value)` <br /> ,I ^, .w..t - :be conclusiv..e;for,clean�cl6sure?,: <br />