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January 27,2000 Ms. Carla Lenkey Colorado Department of Public Health and Environment RECEIVED Wa[er Quality Control Division -Permits and Enforcement JAN 3 ~ 2000 4300 Cherry Creek Drive South - Denver, CO 80222-1530 Division of Minerals 8 Geology RE: PERMiT CO-0034142: 4th QUARTER. 1999 DISCHARGE MONiTORiNG REPORTS Dear Ms. Lenkey: Enclosed is a completed and signed copy of the above referenced discharge monitoring repot required by Cyprus Empire Corpora ion's (CEC) permit. No permit limitation exceedences occurred during this quarter. For Outfall 022 and 024, more parameters were reported than required in the field statistics because Routine Chronic Wet Testing was being performed at that time. Site 003 did not begin discharging until mid-October. Outfall 003 fell short of meeting some of the'Erequency of analysis' requirements for lab parameters. The reported statistics demonstrate that this site was visited per permit requirements, but the correct parameters were not teased. A different monitoring procedure has been implemented (see attached) along with group meetings to discuss the new program and stress [he requirements imposed by this discharge permit. In addition, a weekly contact will be made to go over activities Eor the 7day monitoring period. This will help both the new personnel working with the program and tracking of the required sampling. Chronic Whole Effluent Toxicity (WET) [esting was performed a[ Outfalls 003, 022, and 024 and indicated no toxicity to P. promelas or C dubia . The "Concentration with Statistically Significant Difference in Lethality" was > 100% for both species at each Ou[fall. Copies of the CDPS WET Test Repot Fotms for bo[h species are included in the submittal. Outfalls 004, D07, 009, Ol 1, 012, 013, 014, 015, 016, 017, 018, 019, 020, 021, and 023 along with Site 300I did trot discharge during this period. In order to reduce the amount of paper work, the following certification will be substitu[ed for the actual DMR forms to cover the outfalls which did not discharge. I cerify under penalty of law that I have personally examined and am familiar wi[h the information submitted herein; and based on my inquiry of those individuals responsible for obtaining the information, I believe the submitted information is true, accurate, and comple[e. I am aware tha[ there are significant penalties for submitting false information, including the possibility of fine and imprisonment. See 18 U.S.C. § 1001 and }3 U.S.C. § 1319. (Penalties under [here statutes may include fines up to Elm an~r ma„timum imprisonment of between 6 months and S years.) ~ ~ Richard Mills, Environmental Manager Dale Please contact meat (970) 870-2785 (or any further questions or additional information. RAG EMP RPORATION \ ~ St hanie S. Carter enclosures cc DMG CWPS Permit No. CO-0034142 File III IIIIIIIIIIIIIIII 999 ®'© Empire Corporation 29515 Routt County Road # 27 Oak Creek, CO 80467 (970) 879x800