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STATE OF COLORADO <br />Dl?lt[?N Q? ???AMA?'?ON, MINING AND A??YY <br />Department of Natural Resources <br />1313 ?herm?n St., Roorr? 21 ? <br />Denver, Coiara?o 8423 <br />Pone: ?303? 86?-3??7 <br />???: ??a3? 83281 ?6 <br />C?L??ADO <br />DIVISION t?F <br />?EL.AMATt?N <br />hr?tNING <br />?? <br />S,AF ETY' <br /> Bill Ritter, Jr. <br /> governor <br /> Harris Q. 5hermara <br /> <br />?????? ???? ?xecUt?Vrr Dlrec?or <br /> Ronald IN. Cattar? <br /> QCV1510n D'[reCtOC <br /> Natural Resource trustee <br />??: Dan Mathews <br />FR?II?; IVlike Boula <br />DATA: October , X049 <br />UTET: Seneca II Perrnit Na. C-80-?0, Technical Re?isian Igo. 51 {T-51} <br /> watershed Boundary Relocation far Ponds a0?410D$ <br />I have reviewed Seneca Baal company's {S?'s? TR-51 ze?isian applleatlan that was submitted <br />to revise the watersheds far Ponds aa?4 and aa$. originally Fastmine channel 1 ?A was designed <br />to discharge to Pond a?4 but instead the channel was built such that the discharge went to Pond <br />??8. During an inspection walk through for the new Sage creek foal company permit, this was <br />identified and deemed significant because the watezshed boundary between Panels o?4 and aa8 <br />will ultimately become the permit boundary between Seneca II and Sage creek Baal company. <br />S? was requested to correct the problem in the Permit application package and they did so with <br />submittal of TR-1. <br />? has successfully rrzade the appropate changes by modifying the original Channel 1 ?? and <br />renaming it as 13A. ?.? requested, SCC rriadif?ed the e??sting SEDC,?D demonst?atians for both <br />Ponds ??? and X08 and far the appropriate channel segments. This resulted in, a small decrease <br />in total contributing area and peak discharge to Fond a04 and likewise a small increase in <br />contributing area and peak discharge to Pond 00$. Appropriately, SCC did Hat modify the panel <br />configurations, embankments or spillway structures since the change in peak discharge is <br />inconsequential. The As-Built Reports far bath Ponds a?4 and DDS were resubmitted and <br />recertified by a Professional Bngineer. <br />one item that l thought was rninin?ally lane was the channel profile far new Channel 1 ?A. SCE <br />simply changed the name from 1 ?A to I A and resubmitted the same drawing, There are some <br />minor differences between the old channel and the new one particularly towards the lower end of <br />the channel. This is also inconsequential since we don't xequire As-Built Drawings fox pastmine <br />channels, howevex; we will need to ensure that the channel is constructed at least to the <br />minimum design standards and. is stable. I also Hated that included same other extraneous <br />Dffi?? of Office of <br />Mined hand Reclamation Denver ? brand Junction ? Durango Active and In?ctiv? Mines