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C A M B R I A <br /> monitoring wells indicate that fuel hydrocarbon and MTBE concentrations in groundwater beneath <br /> the site are below detection limits and do not threaten any potential sensitive receptors in the site <br /> vicinity <br /> The total pollutant mass remaining to the groundwater is decreasing at predicted rates and neither <br /> creates,nor threatens to create,a risk to human health and safety or future beneficial use(s)of the <br /> aquifer As discussed above, no TPHg, BTEX, or MTBE are currently present at detectable <br /> concentrations in groundwater samples collected from the site wells These non-detect concentrations <br /> demonstrate that the mass remaining in groundwater does not pose a risk to human health and safety <br /> or future beneficial uses of the aquifer <br /> Based on Cambna's review of site conditions,the site satisfies the criteria for a low-nsk fuel site On <br /> behalf of Shell,Cambria respectfully requests case closure A completed CVRWQCB Appendix B <br /> checklist is presented in Attachment A <br /> CLOSING <br /> . Thank you for your consideration of this matter Please call Aubrey Cool at(510)420-3336 if you <br /> have any questions or comments <br /> Sincerely, <br /> Cambria Environmental Technology, Inc. <br /> gw�'O� L'L" x <br /> Aubrey K Cool <br /> Project Geologist <br /> D Gep�O <br /> kms\ ��eH W tiF Cs <br /> Joe W Neely, RG O <br /> Senior Project Geologist <br /> RG 6927 No 6927 • <br /> OF:cAUCA� <br /> 1346 6 <br /> I <br />