1999-01-25_HYDROLOGY - M1977378 (4)

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4th Quarter/December Monthly Report Page 3 ♦ Tailings Pond No. 4 surface Drainage Modification Sunnyside is the owner of the land area where the proposed lined ditch will be constructed. The ditch outlet is planned to drain under Colo. Hwy 110 which requires a CDOT utility permit. Sunnyside's utility permit for placement of the drainage outlet culvert has expired requiring renewal through reapplication. With this exception. Sunnyside has legal right-of-entry to implement the work plan for this project. The project area is within Sunnyside' s MLR permit (M-77- 378) area and Stormwater Permit Certification (COR-040054) area. Approval to implement the work plan has been received through Technical Revision submittal (MLR permit) and Certification Modification (Stormwater Permit) approvals. There was no activity on this project for December or the 4th quarter. ♦ Tailings Pond No. 4 Upland Groundwater Diversion Sunnyside owns or controls the land area required for implementation of this project and has legal right-of- entry. The project area is within Sunnyside's MLR permit (M-77-378) area and Stormwater Permit Certification (COR- 040054) area. Approval to implement the work plan has been received through Technical Revision submittal (MLR permit) and Certification Modification (Stormwater Permit) approvals. There was no activity on this project for December or the 4 th quarter. Cement Creek Diversion and Water Treatment Cement Creek diversion and water treatment was active continuously throughout December and the 4th quarter. The flow of Cement Creek in throughout the 4th quarter was below the treatment system's capacity and the entire flow was diverted for treatment. The flow diverted and treated in December ranged from 347 G.P.M. to 479 G.P.M. and ranged from 347 G.P.M. to 708 G.P.M. for the 4th quarter.