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Nomellini Construction page 2 <br /> 1045 W . Charter Way, Stockton <br /> The placement of MW-12 and MWA 0 has not completed the vertical extent <br /> investigation of the dissolved gasoline constituent plume . Additional vertical <br /> investigation is required . The EHD will require additional monitoring wells to be <br /> placed in MW-10 and MW- 12 areas that are screened in HU-4 , as well as additional <br /> deeper monitoring wells for the vertical investigation/delineation . <br /> The EHD has noticed that there is no monitoring or shallow vapor well screened <br /> across the current water table in the areas around MW-4 or MW-2 . A shallow, first <br /> interface monitoring well is required in these areas for lateral definition of the status of <br /> the first ground water unit. <br /> The work Ian for further delineation required b the EHD in our May 1 2007 <br /> P q Y Y , <br /> correspondence is to include details to destroy the monitoring wells screened in two <br /> permeable hydrological units, install replacement wells , and install additional deeper <br /> and first interface monitoring wells noted in this correspondence . Please submit the <br /> work plan to Geotracker by July 10 , 2007. <br /> You may contact Michael Infurna , Senior REHS at (209) 468-3454 should you have <br /> any questions. <br /> Donna Heran , REHS , Director <br /> Environmental Health Department <br /> Michael J . Infurna Jr. , Senior REHS Nuel Hende on , PG <br /> LOP - Unit IV Engineering Geologist <br /> MI/ <br /> cc: CVRWQCB — James Barton , Sacramento . <br /> AGE — Art Deicke , 837 Shaw Rd , Stockton . <br /> SWRCB-Clean Up Fund — Mark Owens, Sacramento . <br />