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Temporary Substitute Supply Plan -line Camp. Montezuma Courly. SEP 2004, Pege 17 <br />Net evaporator was estimated on the bass o` the State Engineer s Cfr:ce crteria for graves arts, NWS 33 for <br />gross evaporation {<2.2 iNyrj, the Colorado Average Annual Precpitaticn t~"ap '.950•' 981, NOAA da;a fcr <br />Dotoresr, and annual disvibuton for sites over 6500 feet elevation <br />9ased on average annual prec+p~tabon of 2 i,02 inches, and assuming 70°ro effeGrre prec~pdat~on. net annua! <br />evaporations 42 2.0.7(2t.02j= 27.49 inches,year .f no credit is given !or freezing, and 39.89-0.7(21 OZ)=25.18 <br />with frozen conditions taken into account. Since precipitation and effective precipitation will be eraered monthly <br />!or reports (based on weather dataj, the gross evaporation rate is used tc determine consumption, and <br />precipitatioNeftective precipitation to determine rep~acement water avai~able. Local residents repo^, that ponds <br />n trip immed~ale vicir, ty rreeze be'ore 1 November and do net Thaw until a9er 30 Mach, lp provice a <br />conservat're esamale, only the months of DEC, JAN 8 FEB ae cc^suered frozen <br />Figure 9. Table: Mean Monthly Evaporation Rates -Free Water Surface <br /> <br /> <br /> <br />onth <br />SEO <br />Distributlbn <br />>650C <br />Nonthly <br />Grvss Evap <br />(inches) Nonthly <br />Gass Evap <br />(Inches) <br />wlireezing <br />JAty 1,00% 0.42 C.00 <br />FEB 300% 1.27 Q00 <br />h1AR 8~005b 2.53 2.53 <br />APR 90056 3.80 3.80 <br />h1AY 12.50% 5.26 5.28 <br />JUh 76.509s 6,Sa 6.Sa <br />JUL 18,0050 6.75 6,75 <br />AUG 130056 5.a9 5.a9 <br />SEP 11,0050 4. &t a.6a <br />OCT 7.50% 3.17 3'7 <br />hOV a,C09;, 1.69 1 n9 <br />DEC '~, SC'.n 0,63 C.CC <br />To1a! 100 005 a2,2'~~ 39 A5 <br />Water Consumed by Acarecate Ez;racuon The GfGce of the State Engineer instructs us to use a net loss of 4°~ <br />by weight fer the protlud mined irem the si;e to be cons~Cered consumed at the time o' extraction. Tne total <br />planned protluction from the pd ~s 700.000 tons (ta0,OD0 tons'year for five years), resulting in total consumption <br />of 20.5C2 acre•feet, As extracticn will take place apDroximatery 60 days par year assumed to be in the months <br />as shown ~n Figures 1 and 2, consumption w,!I be 4.12 acre•feet:'year, apportioned out over the months {April <br />through September} based on documented production, <br />Water Consumed by P,earedate Washlna, The aggregate produced wiu ~ washed, most likely using a sand <br />screw washer Based cn ~nstruc?ions from the Off+ce of the State Eng+neer, a 4%factor';by weighq of aggregate <br />mines (extracted} tad: ce used to track cdnsumption of this together with aggregate extraction, above. <br />Water Consumed by Dust Comrol Dust control water vri9 oe appLed to d.^tive stockpiles, haul roads, plant area, <br />antl work areas on worktlays when there is less than 0 ? Inch of precipdahon. Actual eperabons will lake place <br />for up to' 2G days per year `or all activities, pnmari!y during trip ceaod JUN-SEP. In the initial SWSP <br />submiss+cn, it was estimated that vra?er would be apD!Ied 58 days a year s However. operations in 2003 antl <br />' NOAA data available at: ntto:~'ccc.atmoS colostate.edurCyi-biNmlvdb.ol: for $LaLvn 52326 tpoloresl for <br />years •:9.17 to 1599 and is `ound at Table K•1 of the DMG application. It is also in Attachment 8. <br />s Assuming an average preaip.tatnn of at .east 0 1 inches during the ~.vbrk week of 2 days in June, 9 in July. 8 in <br />August. and 2 .n Septembers. water application ;o all areas with ;raftlc an work days without preciptation of at least <br />