Laserfiche WebLink
DEC 14 '94 02=36PM 209 SM 3509 P.2 <br /> � r <br /> Working To Restore Nature <br /> Task 2: Lowe and destroy the =nnant of lbIW1, if possible. 'The well was <br /> severely damaged during soil gonna tiZ <br /> �aetivides in October 1993. As <br /> discussed with Mary Mears of p EHD the veli will be Considered <br /> sufficiently destraye,d under any of th following conditions: the well remnant <br /> is located and the casing filled with n t cement grout from bottom to using <br /> a tremie pipe; the well remnwt is Joe, ted but the casing h already packed with <br /> native clayey soil, effectivcly elirainat gg the potential for vertical migration; or <br /> the well remnant cannot be located or s inacoerAble. <br /> Task 3: BackfUl and compact the excavation `t-with the remedieted V=kpiled native <br /> soil. The replaced sail will be cmpac ted to 90% prior to restoring the site with <br /> Grinch asphalt paving. BackfilliAg ud compaction will be performed under a <br /> City of Stockton grading permit. <br /> Talk 4: Drill and install a roplaCemcnt well fol'MWl in the vicinity of the fb"w well. <br /> 'The well will be installed to a total depth of 25 feet below grade using 2-inch <br /> PVC casin j and ##2 prewashed silica sand filter pack. Slotted casing (0.010 <br /> inch slots) will be place from approximately 10 to 25 fear below grade. The <br /> well will be fnished with a water tip well boa. The newly installed well will <br /> be developed and a groundwater ump a collected fbr analysis of BTBX, TPH& <br /> and 17Rd. <br /> Task 5: Resa.mple the replacement well, alon with existing wells MW2, MW3, and <br /> a.MW4,.after a coir muin.of 30 days from the initial sampling of the XePlanenmt <br /> well. <br /> Tule 6: Submit a do= report should gnu dwater contamination not be detected in <br /> any site wells. <br /> Work activities are expected to begin December lot, 1494. RESNA. will notify FHS/MM <br /> immediitdy when the stems of the MWl well remna at is determined (expected the morning of <br /> December 15, 19%). <br /> 15OMk -121494.doc 2 <br />