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<br /> <br />EPA UNRED STATES ENVIRONMEMAL PROTECTION AGENCY <br />WASHINGTON DC 20450 <br />PLUGGING RECORD <br />NAME AND ADDRESS OF PERMITTEE <br />Natural Soda, Int. 3200 RBC 37, Rifle, CO <br />81650 NAME AND ADDRESS OF CEMENTING COMPANY <br />Big 4 Cementing, LLC. P.O. Box 1817, Vernal, Utah 84078 <br />Locate Well and Outline Unit on Section <br />Plat--640 Acres STATE <br />CO COUNTY <br />Rio Blanco PERMIT NUMBER <br />EPA CO 30358-00000 <br /> Surface location description <br /> w I { ! I { SW %, of SW %a of SW '/<Section 26 Townshi 15 Ran a 98W <br /> I I I I I I ! Locate Well in two directions from nearest lines of quarter section and drilling unit <br />_ I I I I I I ~ Surface Location 25 ft. from (N/S) S Line of quarter section <br /> I I I I I I i and 539 ft. from (E/W) W line of uarter section <br />w <br /> <br />' E 1 <br />Type of Permit Describe in detail the manner in which the fluid was placed and the <br />method used in introducing it into the hole. <br /> ~ <br /> Well Number CO 3358-04592 Well #4-3H <br /> ^ Individual <br />I III S <br />I <br />Ii <br />i <br />® Area <br /> Number of Wells <br />1 CLASS III <br /> Casin and Tubin Record after Plu in Well Activity Method of Emplacement of Cement Plugs <br />Size Wt (Lb/ft) Put In Well (ft) Left in Well (ft) Hole Size <br />13-3/8 54# 60 ft 60 ft 16 inch ^ Brine Disposal ^ The Balance Method <br />9-5/8 40# 2107 ft 2107 ft 12-1 /4 ^ Enhanced Recovery ^ The Dump Bailer Method <br />7 In 23 # 2731 1277 ft $-1 /2 ® Brine Injection ®The Two-Plug Method <br /> Lease Name Natural Soda, Inc. Well Number Well 4-3H <br />Cementin to Plu and Abandon Data: Plu #1 Plu #2 Plu #3 Plu #4 Plu #5 Plu #6 Plu #7 <br />Cementin Date 9/09/2004 <br /> <br />Size of Hole or Pi a in which Plu Placed (inches) 7 in. 7 in. / <br />9-5/8 7 in. / <br />9-5/8 7 in. / <br />9-5/$ <br />De th to Bottom of Tubin of Drill Pi eft.) 2086 ft 1$00 ft 1645 ft <br />Sacks of Cement Used (each lu ) Retainer 75 75 430 <br />Slur Volume Pum ed (cu. ft. ) 86 ~ 86 81 2 <br />Calculated To of Plu (n.) 2100 ft 1900 ft 1660 ft surface <br />Measured To of Plu (if to ed k.) 2100 ft 1862 ft 1662 ft surface <br />slur wt. (Lb./Cal.) 1 5.8# 1 5.8# 12.4 # <br />T eCement Retainer Class G Class G Class G <br /> List all O en Hole and/or Perforated Intervals <br />From To From To <br /> <br /> <br /> <br /> <br /> <br />Signature of Ce enter or Authorized Re resentative Signature of EPA Representative <br /> <br />