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March 2019 18107649 <br /> Table 1:Monitoring Well Construction Summary <br /> Elevation <br /> Elevation Well Screened Filter Pack Bentonite <br /> Well Easting'-(feet) Northing' PVC Top' Concrete Well Material Well Depth' Interval Interval Seal Interval Interperted <br /> No. (feet) Pad Top Installation Type (ft bgs) Screened Unit <br /> (feet) feet Date (ft bgs) (ft bgs) (ft bgs) <br /> MW-1 3097466.02 1486791.74 527209 5269.95 6/2/1998 2"/SCH40 659 45.90 5-26 1 -5 Niobrara/Codell <br /> PVC Contact <br /> MW-2 3097623 12 1487456.76 5266.03 526395 6/1/1998 2V SCH40 112 89 87-109 81.5-87 Niobrara/Codell <br /> PVC Contact <br /> MW-3 3097728.68 1486250.38 5261 03 5258.8 6/1/1998 2V SCH40 1072 84 81.5-113 77.5-81 5 Niobrara/Codell <br /> PVC Contact <br /> MW-4 3098893.31 1484259.44 524613 5243.77 April, 1999 2/SCH40 1883 168 unknown unknown unknown <br /> MW-5 3097213.94 1489893.21 527642 5273.86 11/30/2012 2/PSVC40 574 37.3 35.2-57.4 32.7-35.2 Silt Overburden <br /> MW-6 3098238 1486747.45 523968 5237.64 12/19/2012 4/PVC SCH40 2297 209.4 205.5-231.1 203 0-205 5 Niobrara <br /> MW-7 3098804.41 1484797.04 5219.61 521722 1 12/15/2012 4/PVC SCH40 2592 238.8 236 1-259.2 231.2-236.1 Niobrara <br /> Notes 1-Coordinates are in Colorado State Plane North Grid NAD 83 and elevations are on NAD 88 datum Top of well pads about 6 inches above land surface <br /> 2-MW-5 through MW-7 installation date is date the well,filter pack and grout placement were installed in the borehole,but completion wth concrete pad,bollards and <br /> protective steel riser was conducted at a later date <br /> 3-Well total depths for MW-1 through MW-4 measured by Golder 7/30/2010 from the top of the PVC well casing top,bls=below land surface Borehole and well <br /> construction logs were unavailable for MW-4 Information provided for MW-4 was obtained from a video survey of the well performed on July 30,2010 MW-1 well casing <br /> likely extended sometime after construction based on differences in drilled depth based from borehole log and total depth measurement made 7/30/2010,was reduced by <br /> 0 30 feet on 01/10/2013 to enable closing and securing the steel protective riser lid <br /> 4-Screened interval is the depth interval of the nominal length of the screen pipe section,and not the actual measured length of the perforations provided on the well <br /> construction diagrams <br /> GOLDER 1 <br />