Specifications include, but are not limited to: 1 Mobilization: Mobilization of equipment and crew to project site. LS 1 2 Drill Up to Three Exploratory Borings: Drill 7 7/8” borings 10 ft into redbeds underlying LF 690 alluvium, estimated depth of 230 ft each; collect cuttings every 10 feet. 3 Plug One Exploratory Boring: Install highsolids bentonite grout via tremie in exploratory boring in accordance NMOSE plugging regulations CY 3.3 4 Install 2-inch Observation Well 4a 2-inch ID, schedule 40 PVC, 0.030” mill slot well screen with threaded joints and cap on bottom LF 40 4b 2-inch ID, schedule 40 PVC, blank casing with threaded joints, 2 ft stick up LF 180 4c Centralizers installed at 40 ft intervals from TD to 20 ft bgs EA 6 4d 6/9 silica sand filterpack installed via tremie pipe from TD to 160 ft bgs CF 24 4e High solids bentonite grout (20% active solids) installed via tremie from 20 to 160 ft bgs CY 1.8 4f Neat cement surface seal installed via tremie from 20 ft bgs to surface. Type I or II Portland cement, not to exceed 6.0 gallons of water per 94 pound sack of cement CF 6.7 4g Surface completion: 3 ft x 3 ft x 4-inch cement or concrete pad installed around the well casing, 4” steel shroud with locking cap cemented in place and bollards installed at each corner to protect the wellhead from traffic EA 1 5 Drill 26” boring to 40 ft for surface casing LF 40 6 Install 40 ft of 20” OD, 1/4” wall, mild steel surface casing to estimated depth of 40 ft LF 40 7 Cement conductor casing in place from 40 ft to ground surface with neat cement seal installed via tremie CY 2.6 8 Ream Boring: Ream exploratory boring below conductor casing to 17 ½” or 17 7/8” diameter to a depth of approximately 230 feet. LF 190 9 Blank Casing: 130 feet of blank 12 ¼” ID, ¼” wall thickness, HSLA steel casing at locations to be determined upon completion of drilling, to include 2 foot stick up above ground surface and 10 foot pump chamber below screen, cap on bottom. Casing joints shall include two 40 ft joints, one 20 ft joint, and three 10 ft joints. Total includes 8 ft landing joint. LF 130 10 Well Screen: 100 feet of 12 ¼” ID, ¼” wall thickness, 0.090” slot louvered screen, 120 louvers per ft, at locations to be determined upon completion of drilling. Screen shall include four 20 ft joints and two 10 ft joints LF 100
