Laserfiche WebLink
.., ~ <br />Mr. Kent Gorham, CDMG <br />Re: N.O.V. No. CV-98-003 <br />Page 2 <br />• It should be noted that while runoff was intense within several Trapper drainage systems, <br />damage was minor and will be corrected as soon as ground conditions allow. <br />• While preliminary evaluation indicates that the one-foot freeboard requirement at No Name <br />No. 4 pond was slightly deficient, there was no embankment damage from the small amount <br />of water that ran over the west comer of the embankment during the peak discharge <br />experienced on March 26. Additional freeboard will be added to No Name No. 4 pond as <br />soon as ground wnditions allow. <br />Possible effluent limitation exceedances are still being evaluated. It is felt however that if <br />there were effluent violations on March 26 it was not because of any failure of the sediment <br />treatment system design. Rather, it was because of the very unusual set of climatic and <br />ground conditions that combined, as discussed above, to produce an uncharacteristically <br />intense and unprecedented precipitation input which acted to temporarily overwhelm a small <br />portion of the system. It is felt that this occurrence was very isolated, outside Trapper's <br />ability to control and very unlikely to occur again in the future. <br />• A monthly summary of collected Trapper weather data is enclosed for your review. Please <br />note that daily maximum temperatures were relatively moderate for several days prior to the <br />flooding on March 25 and 26 and then returned to more seasonal levels in subsequent days. <br />Also note that daily minimum temperatures well below free2ing occurred through March 23 <br />and likely acted to regulate any significant snowmelt prior to March 24. <br />Please contact me if you have any questions. <br />Sincerely, <br />~~~~ <br />Forrest Luke <br />Environmental Manager <br />Fvt. <br />lG:/dmg/nov96003] <br />c File 109.2.3.4 <br />Tom Kaldenbach, DMG <br />Uavid BertY, DMG <br />