Laserfiche WebLink
TabW 1A - April 2010 - March 2011 <br />Evaporation for a site near Olathe, Colorado (elev. 5350 ft) <br />.Western Gravel Inc. <br />Groundwater exposed During Mining 3.08 acres for south pit (April-June) and 1. 87 acres for north pit. <br />Groundwater exposed <br />Gross Evaporation, 46 -Inches (from NO AA Technical Report NWS 33) for north pit <br />Precipitation Station Montrose 2 <br /> - ? 2 ;3- <br />'Month Monthly Oross Average Year <br /> Evaporation Evaporation Precipitation <br /> Distrubution <br /> Inches Inches <br />A ri 1 4.14 0.73 <br />Ma 12.0 6.52 0.74 <br />June 14.5 6.67 0.45 <br />Jul 15.0 5.90 0.72 <br />August 13.6 6.21 1.06 <br />September 10.0 4.60 0.92 <br />October 7.0 3.22 5 <br />November 4.0 1.84 0.54 <br />December 3.0 1.38 0.52 <br />Janus 3.0 1.38 0.48 <br />February 3.5 1.61 0.40 <br />March 5.5 2.63 0.59 <br />nnual 100.00° 46.00 8.00 <br />Footnotes: <br />(1) From SEO's Guidelines (2128195) for sites with elevation less than 6,600 ft. <br />(2) Annual value from NOAH Technical Report NWS 33, <br />(3) Average annual precipitation data from NOAA recording stations at Montrose 2 (1982-2006) and Ridgway (1982-2006) averaged. <br />(4) Equals Column (3) x 0.70 <br />(5) Column (2) - Column (4) <br />(6) Column (5) 112 <br />(7) Column (6) x 3.08 acres of exposed groundwater surface April through June (during mining) and Column (6) x 4.9 acres of exposed ground water July through March (after mining <br />(8) Column (6) x 1.87 acres of exposed groundwater surface legged back to river <br />(9) Column (7) + Column (8) <br />Inc, Dee. by: EKG <br />P:t081-011W00\SWSP%Red Do&SWSP-RenewaLDeoember?0M Wright Ds Water ater En EngineeInesrs, Ckd, by: PRF <br />Western Gravel both pits SWSP Tables 12-10-09 EKGevap-Ining and non-mining 2010