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iiECE1VED BY FA <br />~E8 2 31996 <br />February 20th (0700) - 21a (2300) <br />February 21st <br />February 22nd <br />08:00-08:10 <br />O8:30 <br />08:15 <br />08:15-09:45 <br />10:15 <br />10:30 <br />12:00 <br />13:00 <br />Urruaual Stormwater Eveat -Existing <br />enowpack 18 inches, ttnseaeotubly warm QAAQ <br />temperatures (35°F low), and 1.1 inches of <br />rainfall. <br />Inspection of drauiages, ditches and <br />ponds. <br />Surface Operations notified that ttutoff was <br />wming from undisturbed areas (Sylveaar <br />Gulch) into the ditches conveying water to <br />MH-2R <br />Surlhce Operations bladed the ditches in <br />Sylvester Gulch to reiateblish drainage of <br />undisturbed aroa runoff. <br />Pre-discharge sampling occurred. On-site <br />laboratory notified that TSS analyses would <br />be required as soon u possible. <br />CDPOI-I&E WQCD notification was <br />completed. <br />Contractor selected to determine if the 10- <br />year 24-hour event had infect, occurred. <br />Laboratory notified to conduct moisture per <br />inch of snow analysis. <br />Discharge began and discharge simples <br />taken. <br />13:30 Snow measurements taken for average snow <br />depth remaining. <br />15:20 Colorado Division of Minerals end Geology <br />notified of discharge. <br />16:11 Preliminary report of Total Suspended Solids <br />faxed from laboratory to MCC. <br />07:00 Discharge continuing at MB-2R end 1VID-3. <br />07:15 - 08:00 Sampling of discharge points end river <br />are wmpleted. <br />08:15 - 13:00 Chemical additives (flocculent), 4B gallons <br />added to Iv18-2R to settle solids. <br />Laboratory analyses and burden of proof documentation will be submitted as soon at it bewmes <br />available to us. <br />