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Ms. Carla Lenkey <br />October 27, 2000 <br />Page 2 <br />As noted on the enclosed monthly NOAH weather summary for September, precipitation in the amount <br />of 1.46" was recorded on 09/22/00. A l0-year, 24-hour event at Trapper is defined as 1.40". Daily <br />precipitation measurements are recorded at 7:30 a.m. The samples were collected at 9:40 a.m. (outfall <br />001) , 10:40 a.m. (outfall 017), and 11:15 a.m. (outfall Ol 1) on 09/22/00. This information demonstrates <br />these discharges were sampled within 48 hours of measurable precipitation. <br />Trapper is required to maintain sediment levels in ponds at or below 60% of the pond volume. The <br />ponds contributing to outfalls 001, Ol 1, and 017 all contained sediment levels well below this limit at the <br />time the exceedenas occurred. The exceedences occurred solely in response to precipitation and <br />therefore, the alternative limitations in these instances are applicable. No other exceedences or variances <br />from compliance with primary effluent limitations cecured during the quarter. Thank you for your <br />cooperation in this matter. Please contact me if you have any questions regarding the enclosed <br />information. <br />Sincerely, <br /> <br />Karl C. Koehler <br />Senior Environmental Engineer <br />KCKhck [CDHPE~00.0Crt7j <br />Fie4or~e <br />T. Kaldm6~ch, CDMG <br />Fk 109.3.7 <br />certify tinder penalty of law that this document and all attachments were;prepared under; ~; <br />irection or supervision in accordance with a.system designed to assure. qualified <br />roperly gather and evaluate the. information submitted. Based oa my,inc~t, o~~ person:.g <br />gathering:th <br />ersons who manage the system, fir those: persons dirxtly tt;spon§ible .for." <br />dotmation, the information submitted is to the best of my lmowledge `and belief, - trt>S <br />;curate, and complete. I am aware that there aro significant penalties for submitting`fahi <br />dormation, including the possibility of fine and itttpriso ent for lmowing violations.. <br />don Peters -. <br />President 8c General Manager ' . . <br />