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MID-CONTINENT RESOURCES, INC. <br /> PRODUCERS OF THE FAMOUS COAL BASIN COKING COAL <br /> BOX 158 <br /> CARBONDALE, COLORADO 81623 <br /> WQCONTMIENT RESOURCES,INC. TELEPHONE <br /> W PLAINFIELD ROAD SUITE 220 OW)903-2581 <br /> WILLOWBROOK.ILLINOM W521 TWX <br /> .December 23, 1983 910`n TT" <br /> . .s•oT2a <br /> Mr. Jim Herron <br /> Mined Land Reclamation Division <br /> 423 Centennial Bldg. <br /> 1313 Sherman St. <br /> Denver Colorado 80203 <br /> Re: Coal Basin Permit C-017-81 Sediment from Road Systems <br /> Dear Jim: <br /> Following is the data from samples taken on the roads: - <br /> - Tot. <br /> Sample Location Acres Area Ms/L TSS F1oW,CFS Tons Tons/Acre <br /> 1 A-6 6.4 16,080. 0.2 46.0 7.2 <br /> 2 D-4, 5 24.3 4,320 0.3 24.5 1.0 <br /> 3 E-3 12.8 9,370 0.1 26.7 2.1 <br /> 4 _ E-6 _ 1'.9 2,840 - 0.2 5.4 2.8 <br /> 5 F-1 30.1 1,755 0.1 5.0 0.2 <br /> 6 G-1 11.5 2,632 0.1 7.5 0.6 <br /> 7 G-19 19.2 3,273 0.3 18.6 1.0 <br /> Average-tons/acre = 2.13 spring runoff <br /> Total road disturbed area: 175. acres <br /> Spring sediment load, Coal Basin road system: 373. tons <br /> Add 30% (70% annual precipitation is snowpack); <br /> Annual sediment load, Coal Basin road system: 485. tons + <br /> Please contact me if you have any questions regarding this report. <br /> Sincerely, <br /> Environmental Coordinator <br /> DWBowman:ms <br />