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iii iiiiiiiniii iii <br />~os~~g <br />,~ Cospossroo <br />A Cyprus Ama: Company <br />April 28, 1998 <br />Ms. Carla Lenke}' <br />Colorado Department of Public Heal[h and Environment <br />Water Quality Control Division -Permits and Enforcement <br />4300 Cherry Creek Drive South <br />Denver, CO 80222-1530 <br />P.O. Box 68 <br />Craig, Colorado 81626 <br />(97018248246 <br />RE: PERMIT CO.0034142: FIRST QUARTER. 1998 DISCHARGE MONITORING REPORTS <br />Dear Ms. Lenkey: <br />Enclosed is a completed and signed copy of the above referenced discharge monitoring report required by Cyprus <br />Empire Corporation's (GEC) permit for January 1, 1998 through March 31, 1998. Also, enclosed are copies of the <br />COLORADO -CDPS WET TEST REPORT FORTS -CHRONIC Forms for required quarterly testing. No permit <br />limitation exceedences occurred during the quarter. <br />For Outfalls 022 and 024, more parameters were reported then required in the statistics because Rou[ine Chronic Wet <br />Testing was being performed at that time. The reported statistics demonstrate that [hese sites were visited per permit <br />regulations. <br />Chronic Whole Effluent Toxicity (WET) testing was performed at Out(alls 022 and 024 and indicated no toxicity to <br />P. promelas or C rlrrbia. The "Concentration with Statistically Significant Difference in Lethality" was > 100%. Copies <br />of the CDPS \y/ET Test Report Forms for both species are included in the submittal. <br />Outfall 024 shows oil and grease lab data for 1/9/98, 2/4/98, and 3/4/98. There was no actual sheen on the wa[er. <br />Due to a misinterpre[ation of the permi[ regulauons, the sampler at Empire was having the lab automatically test for <br />this parameter. Again, this was withou[ cause, there was no O&G sheen at Outfall 024. <br />Outfalls 003, 007, 009, 011, 012, 014, 015, 016, 017, 019, 020, 021, and 023 along with Site 300I did not discharge <br />during this period. <br />Outfalls 004, 013, and 018 have not Mowed in recent years. During the indicated flow period for this quarter, however, <br />[he permitted location was experiencing a 65% snow pack melt Deer a period of two days, which caused these sites to <br />discharge. This is highly unusual for this area, and thus had anomalous effects on the above mentioned Outfalls. <br />Please contact me a[ (970) 879-3300, ex[. ?305 For any further ques[ions or additional informs[ion <br />CYPRUS EMPIRE CORPORATION <br />~~` ~r ~ ~~ ~ ~ - c~~ <br />Step"hanie 5. Carter <br />Environmental Specialist <br />enclosures <br />cc: DMG <br />CWPS Permit No. CO-0034142 file <br />