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• previously tested. The down gradient monitoring well (MW-2)has a higher concentration <br /> than last tested. Replacement monitoring wells in general have produced a lower analysis of BE1-K <br /> and TPHg than the original monitoring wells. <br /> • RECOMMENDATIONS <br /> To date two the CPT's located on the Olivarez Property have been completed and a report front <br /> Gregg Drilling & Testing, Inc. has been received. Currently Foothill Engineering is workinL) % ith <br /> Caltrans to secure an access agreement to install a third CPT in the parking lot under the vieduct of <br /> the Crosstown Freeway(State Route 4). The area directly north of the Lafayette Street is a res}rctecl <br /> access area and requires a special permit from Caltrans Headquarters. This final CPT Zvi" be <br /> installed when the Caltrans permit is obtained. <br /> It is recommended that quarterly water sampling be continued on only the replacemem wcc lis. <br /> Sampling ofthe original monitoring wells should only be resumed if the groundwater elevation drops <br /> and the over screen condition has been eliminated. <br /> Please review the enclosed data,-and if you-have any questions contact this office. <br /> Respectfully submitted, <br /> i <br /> I <br />• <br /> zErvin <br /> gRifenbrg, <br /> .V <br /> g t�1FL''^ <br /> ac <br /> 19750 <br /> E P• <br /> cc: Olivarez <br /> Cati�J � <br /> 2 <br />