Laserfiche WebLink
Mr.Harlin Knoll <br /> Checklist for No Further Action Request and Monitoring Well Destruction Work Plan <br /> September 29,2010 <br /> Page 5 <br /> • Monitoring wells MW-2 and MW-4 will be overdrilled and removed using an auger <br /> drill rig. This will include the removal of the PVC piping,bentonite,sand,grout, <br /> and well box. The concrete and metal will be placed in the regular trash;the <br /> remaining material will be spread on site in an area of minimal erosion activity. A <br /> Portland cement/bentonite grout will be used as backfill material. The selected <br /> licensed driller will follow the California Well Standards,Bulletin 74-90 (Supplement <br /> to Bulletin 74-81). <br /> • All decommissioning activities will be documented by SHN field personnel. <br /> • A report documenting site activities will be submitted to the SJCEHD within 90 days <br /> following the conclusion of fieldwork activities. <br /> Proposed Schedule <br /> SHN is prepared to commence work on the destruction of the monitoring wells within four weeks <br /> after a NFA letter and well destruction permits have been granted by the SJCEHD. A report <br /> documenting our activities will be submitted within another 90 days after completing the site work. <br /> Thank you for your assistance in moving this site to closure. If you have any questions,please call <br /> me at 707-441-8855. <br /> Sincerely, <br /> SHN Consulting Engineers &Geologists,Inc. <br /> John gio,P.E. ZZ N0. 57105 :=•.t <br /> ` Project Manager °! <br /> L � ! <br /> JJA/MAP:ImsExp. <br /> s�gpF CIV I �`P <br /> Attachments: A. Site Maps and Cross Sections OF CALF <br /> B. Historic Monitoring Data <br /> C. Lead Analysis Documentation <br /> L D. Unauthorized Release Form <br /> E. Report Covers <br /> F. Soil Boring Logs <br /> c.w/attach.: Chris Walker,WOS <br /> James Barten,RWQCB,Central Valley Region <br /> L <br /> L <br /> \\Eureka\Projects\2007\007152-WOS\PUBS\rpt\20100929-NFA.doc S:_J J <br />