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Blank <br />Keffelew, Berhan <br />Page 1 of 3 <br />From: Bryan W. Kohlenberg [bwkQudfcd.org] <br />Sent: Monday, January 12, 2004 9:40 AM <br />To: Keffelew, Berhan <br />Subject: RE: Permit M-1983-176 <br />Berhan, <br />Having still not received any copy of the amendment and with the comment deadline tomorrow, I <br />decided to copy my comments on the County's Floodplain Use Permit Application to you. <br />Bryan W. Kohlenberg, P.E. <br />Urban Drainage and Flcod Control District <br />2480 W. 26th Avenue, Suite 1566 <br />Denver, Colorado 80211 <br />303.455.6277 ph / 303.455.7880 fax <br />www.udfcd.ora <br />We have the following comments concerning this amendment: <br />1. As stated in the application, the applicant needs to revise the County floodplain use permit. <br />However, this needs to be done prior to any mining in the new 8-acre area, not during mining <br />as the last paragraph on page 8 states. <br />We have the following comments on prior amendments that we believe should have a bearing on the <br />County's decision to approve this amendment: <br />2. The applicant has stated that the mining work in the 6.2-acre area (referred to, in this <br />application, as "Area 2") has been backfilled. However, it is unclear as to when this azea is <br />scheduled for revegetation. The table on page 8 of the application identifies this area as being <br />revegetated in Phase 1. Is Phase 1 expected to begin 1 to 3 yeazs from now or 1 to 3 years from <br />the original year 2000 conditional use permit? The District believes this area should be <br />revegetated immediately to provide much needed erosion control in this area. According to the <br />original conditional use permit application, dated July 24, 2000, this area was to be revegetated <br />with "native wetland type plants." <br />3. As part of Asphalt Specialties' last amendment application for the addition of approximately 15 <br />acres (also known as Sweetman addition), it was our understanding that the County required <br />the applicant to address the Henderson Creek flows that the proposed reservoir would <br />intercept. We believe the applicant chose to accept creek flows into the proposed reservoir <br />rather than route them around. On referral from Adams County, the District reviewed the first <br />set of Henderson Creek reservoir inflow and outflow structure plans submitted several months <br />ago by the applicant's consultant, but we have not heard back as to the status of our comments <br />or the design. We believe this issue should be adequately addressed before this amendment is <br />approved. <br />Permit#:'m#{ LQ~~-1~6 Confidental?: '~~ us] <br />Class:~~ [" Sf Q f~ Type-Seq.: <br />From: ~LRP~MU f h(.,OC~ To: . n /Yl ~ <br />Doc. Name: h~ t t, fl <br />Doc. Date (if no date stamp) <br />1/12/2004 <br />