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Mike Pitta <br /> Page 2 <br /> March 31,2005 <br /> Abandonment Details <br /> Overdrill Overdrill Well <br /> Depth H.S.A. Dia. Dia <br /> Well (feet b s) (inches) (inches) Well Materials Removed <br /> M-9 16 8-1/4 2 Five feet of PVC blank casing and 10 <br /> feet of stainless steel wire mesh screen <br /> N-6 17 10-1/4 4 All PVC blank casing and screen was <br /> ground up using a stinger drill bit <br /> and disposed of as part of the drill <br /> cuttings <br /> RW-2 25 12-1/4 6 All PVC blank casing and screen was <br /> ground up using a stinger drill bit <br /> and disposed of as part of the drill <br /> cuttings <br /> Four drums of drill cuttings were generated during abandonment: one for N-6, two for RW- <br /> 2,and one for M-9. The drummed cuttings were staged along the eastern fence line of the <br /> property. One composite sample was collected on September 30,2004 from the drums for <br /> characterization and ult' e disposal at Foreward Landfill. The sample was sent to Alpha <br /> Analytical in Sparks,Nevada for analysis of metals,total petroleum hydrocarbons (TPH), <br /> and benzene, toluene,ethylbenzene,and xylene (BTEX) as noted in the following table. <br /> Drill Cuttings Analysis <br /> Analysis Laboratory Method <br /> CAM Metals EPA Method SW6020 <br /> TPH,Extractable and Pur eable EPA Method SW8015B/DHS LUFT Manual <br /> BTEX EPA Method 8260B <br /> The analytical results are attached. <br /> Please let me know if you have any questions or require additional information regarding <br /> the abandonment of Wells M-9,N-6, and RW-2. <br /> Sincerely, <br /> CH2M HILL <br /> Vv <br /> Mark uttig,RG <br /> Project Manager <br /> Attachments <br /> • Well Abandonment Permit <br /> • Analytical Results <br />