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zoning requirements, can be evaluated. However, a change in site use from commercial to <br /> residential will not result in an <br /> y substantive changes in the qualitative results of <br /> g Q the risk <br /> assessment. <br /> Third Bullet Item <br /> The remediation plan is consistent with the general guidelines of the California Leaking <br /> Underground Storage Tank Field, Manual (i.e., to clean up soils and ground water to the <br /> maximum extent practical to reduce any future risks). The numerical quantities described in the <br /> LUFT manual are not remediation,goals. The presence of residual petroleum hydrocarbons in <br /> soil and ground water beneath the site do not pose a significant health risk under any reasonably <br /> anticipated site use. On the basis i'of potential health risks, Alton Geoscience does not believe <br /> that additional remediation is required to ensure the safe future use of the property. <br /> Sincerely, <br /> ALTON GEOSCIENCE i <br /> Stephan Rosen <br /> Senior Geologist <br /> `1 <br /> William T. Hunt, RG, CEG <br /> Vice President, Operations <br /> I <br /> I <br /> M:%—'UnobiR04-343%gmatdx <br /> I <br /> i <br /> 5 <br /> I <br /> 12 <br /> h <br /> C <br /> . i <br />