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• <br /> <br />GROUNDWATER OBSERVATION WELL REPORT B L_ ~ p 1 A <br /> <br />Project Bruce Park Dam <br />Location Paonia Colorado PG. 1 OF 1 <br />Client Terror Ditch and Reservoir Company Baring No. BL-101A <br />Contractor Heliport Dolling Driller Ron Lancaster Location Paonia <br />Observed by ERF Date Started 11-29-01 COlOradO <br />Checked by RJH Date Completed f 1-29-01 Project No. 99292 <br /> <br />SURVEY LENGTH OF SURFACE CASING ABOVE GROUND 0.8 <br />DATUM NGVD SURFACE (FT) <br /> F RI <br />' <br /> LENGTH O <br />SER PIPE ABOVE GROUND 0 <br />GROUND SURFACE (FT) <br />ELEVATI ON <br /> THICKNESS OF SURFACE SEAL BELOW 0.0 <br /> GROUND SURFACE, IF ANY (FT) <br /> TYPE OF SURFACE SEAL (indicate any Portland Cement <br /> 0 -.7' Clayey Silt additional seals) <br /> Mostly fines, black <br /> .7-f4.5 Clay mostly ID OF SURFACE CASING (IN) Flush mount <br /> foes, very stiff, TYPE OF SURFACE CASING <br /> 15-20 % sand, <br /> 5-30% gravel <br /> DEPTH BOTTOM OF CASING (FT) <br /> gray to tan to red <br />a1 <br />~ <br />ID and OD OF RISER PIPE (IN) 0.8 <br />N 14.5-29.5' Sandstone TYPE OF RISER PIPE Flush joint PVC <br />o mostly sand, fine <br />o to metlium grained ~{- DIAMETER OF BOREHOLE (IN) 3.8 <br />? moderately to very <br />~ foable ~~ TYPE OF BACKFILL AROUND RISER PIPE Portland Cement <br />Z <br />O <br />F DEPTH TOP OF SEAL, IF ANY (FT) 10.5 <br />~ <br />Z I NPE OF SEAL Granular Bentonite <br />~ DEPTH BOTTOM OF SEAL (FT) 12.0 <br /> <br />J <br /> <br />~ I DEPTH TOP OF PERVIOUS SECTION 13.0 <br />J <br />~ <br />TYPE OF PERVIOUS SECTION PVC <br /> <br />W ~ <br />DESCRIBE OPENINGS 10 slot Machine cut <br /> <br /> ID and OD OF PERVIOUS SECTION (IN) 0.8 <br /> <br /> ~- <br /> TYPE OF BACKFILL AROUND PERVIOUS SECTION 10x20 silica sand <br /> <br /> DEPTH BOTTOM OF PERVIOUS SECTION (FT) 18.0 <br /> ~- DEPTH BOTTOM OF SAND COLUMN (FT) 19.0 <br /> J ELEV./DEPTH TOP OF SEAL, IF ANY (FT) <br /> TYPE OF SEAL <br /> ELEV./DEPTH BOTTOM OF SEAL (FT) 29.0 <br /> TYPE OF BACKFILL BELOW PERVIOUS SECTION, Portland Cement <br /> IF ANY <br />NOTES: Piezometer, 3!8" steel cable, and coaxial cable down hole <br />~ <br />total steel cable length from bottom of hole = 50' 8.5", total coax length from 22'tlepth = 25' (jEi CORSllIC3RL5, IRC. <br />20' 3/4" PVC for protective sheath over steel cable ENGLEWOOD COLORADO <br />