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--- Stantec �.,,� <br /> June 22,2009 <br /> Page 2 of 2 <br /> Reference: Well Permit Application Packet <br /> All soil borings will be advanced using direct push technology and utility clearance will include the <br /> use of either a hand auger or a vacuum truck to air knife to a depth of five feet bgs. The soil <br /> borings will be advanced to a depth of approximately 20 feet bgs. Due to the close proximity to a <br /> future excavated area all soil borings will be backfilled with a 'bentonite slurry by a gravity feed <br /> method to just below grade. <br /> Monitoring wells MW1/132, MW-2, and MW-3 will be destroyed by using a drill rig to over-drill the <br /> well to total depth and the entire well casing and well box will be removed. After the well box and <br /> concrete apron are removed borings MW-2 and MW-3 will be filled with a neat cement grout <br /> pumped through a tremie pipe from the bottom of the boring to just below grade. Due to the close <br /> proximity to a future excavated area boring MW-1/B2.will be backfilled.with a bentonite slurry by a <br /> gravity feed method to just 'below grade. All borings will then be capped with either concrete or soil <br /> to match the existing surface grade. <br /> The domestic water well will be destroyed by using a drill rig to remove the pump and drop pipe <br /> from inside the well. Once the.casing is cleared both sides of the well casing will be perforated to <br /> allow an adequate seal. After the well casing is properly perforated the well will be filled with a neat <br /> cement grout pumped through a tremie pipe from the bottom of the boring to just below grade. The <br /> well box and concrete apron will be removed and then capped with either concrete or soil to match <br /> the existing surface grade. <br /> If you have any questions or concerns regarding this permit application package, please feel free to <br /> contact the undersigned at (916) 384-0752. <br /> Sincerely, <br /> Stantec.Consulting Corporation <br /> Bryan Rorie <br /> Project Scientist <br /> Attachments: <br /> April 24, 2009 Remedial Excavation Work Plan <br /> May 22,2009 RWQCB Approval Letter <br /> Well Permit Application (for six soil borings) <br /> Well Permit Application (for destruction of three monitoring wells) <br /> Well Permit Application (for destruction of one domestic water well) <br /> I:\PG&E\French Camp\2009 remediation\Permits\Permit App Cvr Ur 6-9-09.doc .' <br /> rte,' <br />