PERMFILE112690 - Laserfiche WebLink

Home Browse Search

:-~ ~_%"- STATE DE~`RTMENT ~' JACK KINSTLINGER .'~~~". DIVISION OF HIGHWAYS ~~~Y~~if E. N HAASE ~r _ i CHIEF ENGINEER ~"' J„ E ~ ~'~ s*.rz m ~ow•.oo COLORADO STATE PATROL GOL. C. WAYNE KEITH, CHIEF 6201 EAST ARKANSAS AVENUE DENVER. COLOgApO 80222 ~303~ -59.Y011 t f ). M. " Y C... Y r. ~~- ~ ~ ~.' 7 ~c r.f, L ~ I/c... Mr. James B. McArdle Mined Land Reclamation Board 1313 Sherman Street Denver, Colorado 80203 Dear Mr. McArdle: t.~Itdt:O LAt;G ~IL4i_+Lnl, 1 ~LI'J Cele. Gep:. c! i~!~?L'Y,":I ~i L'S Dlii%Ci Dist. 4 Misc. I 25 htarch 11 , 1982 The Colorado Division of Highways has reviewed the proposed Siegrist Pit, File No. 82-15. The pit is located on both sides of St. Drain Creek immediately downstream of highway structures D-l7-AT, - AS on Interstate 25 and structure D-17-U on the frontage road. Our primary concern is the structural integrity of these three highway bridges. l•le object to any operation that o-rould cause degradation of St. Vrain Creek and endanger our structures. The permit application indicated leaving only 200 ft. wide channel and made no mention of bank protection or stability through the proposed pit area. A sub- ~ stantial dike must be provided on both banks to minimize the probability of the St. Drain eroding into the pits and subsequently degrading the channel flowline under our bridges. The stream banks are certain to be attacked as the St. Drain attempts to re-establish its natural meander, thus we recommend some bank revetment or placement of the ponds farther from the existing stream center. We appreciate the effort by Siegrist Construction Co. to mitigate any adverse esthetic results of this pit. Thank you for the opportunity to review this pit permit application. yJe are returning the report which you previously transmitted to us. Very truly yours, E. N. HAASE Chief Engineer GCJ/acb Attach. copy: D. M. Bower Kasenga/Heiderstadt //n. ~r JAMES W. KASENGA Staff Design Engineer OF HI~AYS EXECUTIVE DIRECTOR I