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<br /> <br /> <br />~~ <br />COLORADO DEPARTMENT OF HEALTH, Water Quality Control Division <br />Rationale - Page 2. Permit No. COG-850023 <br />F. Discharge Points: 001 - the discharge from Pit No. 4, prior to <br />mixing with Grassy Creek, as shown is figures <br />1 and 2 of the permit. <br />002 - the discharge from Pit No. 3, prior to <br />mixing with Grassy Creek, as shown in figures <br />1 and 2 of the permit. <br />003 - the discharge from Pit No. 2, prior to <br />mixing with Grassy Creek, as shown in figures <br />1 and 2 of the permit. <br />004 - the discharge from Pit No. 1, prior to <br />mixing with Grassy Creek, as shown in figures <br />1 and 2 of the permit. <br />005 - the discharge from Pit No. 5, prior to <br />mixing with Grassy Creek, as shown in figures <br />1 and 2 of the permit. <br />G. Discharge Flows: The sedimentation ponds were designed to <br />contain and treat the 10-year, 24-hour <br />precipitation event. <br />III. RECEIVING STREAM: <br />001, 002, 003, and 004: "No Discharge" has <br />been reported on submitted discharge <br />monitoring reports for the period from <br />1-1-1985 through 9-30-1990. <br />A flow of 1 cfs was indicated as a flash storm <br />runoff flow value from each of the discharge <br />points; however, normally no flow is <br />discharged. <br />005 = 0.25 gpm from 1985 monitoring report <br />Discharges from 005 have been reported during <br />6 quarters from 1985 through 1990. However, <br />flow has not been reported. Flow is required <br />to be monitored for all discharges. <br />Measurement by bucket and stopwatch is <br />acceptable providing the permittee can show <br />that this is accurate within 10 % of the <br />actual reading. <br />A. Identification, Classification and Standards <br />1. Identification: All discharges will go to Grassy Creek, segment <br />12, Yampa River subbasin, Upper Colorado River Basin (Planning <br />