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Rationale for Recommendation to Approve 15
<br /> September 29, 2016
<br /> Applicant submitted a list of the 43 easement owners for Little Turkey Creek Road to accompany Figure
<br /> C-2. The Division determined the revised Figure C-2 satisfied the requirements of Rule 6.4.3(g).
<br /> 6. Concerns regarding the control of stormwater and increased potential for flooding resulting
<br /> from the mining activity. Concerns for adverse impacts to the prevailing hydrologic balance for surface
<br /> water resources.
<br /> (W. Baker, M. Baker, S Harper, K. Rawson,M. McClurg, B. Chisnell, C Reed, N. Reed, G. Klein, C. Hancock, D.Hancock, R. Larsen, S.
<br /> Larsen,M.Harvey,L.Harvey, G.McCovven,J.Moore,K Moore,M Henslee,M. Cook,J.Lawrence,R. Cadigan,J. Cadigan, C Engelage,
<br /> S. Rawson, K. Blatchford, P. Blatchford, W. Dean, M. Heer, C. Heer, C. Kimble, C Bernstein, C. Lick, D. Lick, L. Rogers, J. Miller, K.
<br /> Troutt,J.Salazar,Jr.,M.Hodges,K.Kay, C.S.Kay,S.LaVerne,S.Pringle,M.Junck,R.Holden, Y.Holden, C Newby,K Newby,R. Welch,
<br /> S.Samson, V. Wekamp,D. Wekamp, G.Sovaiko,M.Spoor,B.Hughes,J.Kline,D.Murphy,J.Murphy,B.Simmons,S.Simmons, T.Sivonger,
<br /> S.Sovaiko,J. Gard,D. Gard, C.Bruce,D.Brice,M.Harper,Joe Koscove,S.Koscove,Jack Koscove, M. Koscove)
<br /> In an effort to verify compliance with C.R.S. 34-32.5-116(4)(h) and Rule 3.1.6, the application includes a
<br /> surface water monitoring plan. This plan includes the installment of four surface water monitoring
<br /> stations, located hydrologically up-gradient and down-gradient from the proposed mine area in the
<br /> Deadman Creek and Little Turkey Creek drainages. All monitoring stations will include collection of
<br /> water samples for laboratory analysis, field parameters, and streamflow measurements.
<br /> Surface water quality analysis will include all required parameters from the CDPHE,WQCC—Regulation
<br /> No. 32 — Classifications and Numeric Standards for Arkansas River Basin — Appendix 32-1 — Stream
<br /> Classifications and Water Quality Standards Tables — Effective 0610112016, Stream Section 14d
<br /> (COARUAI4D), except for Chlorophyll a, which the Division determined would not be required for this
<br /> site.
<br /> The Applicant is required to collect surface water quality data during five successive calendar quarters
<br /> prior to commencement of mining, in order to sufficiently characterize baseline conditions at the site. At
<br /> the end of the 15-month monitoring period, the Applicant will submit a final report to the Division which
<br /> summarizes monitoring results. After reviewing the final report, the Division will determine whether any
<br /> aspect of the monitoring plan needs to be revised. Any revisions to the approved surface water monitoring
<br /> plan will be submitted for Division review and approval through either the Technical Revision or
<br /> Amendment process.
<br /> Additionally, the Applicant has developed a stormwater management plan which shows how runoff water
<br /> from disturbed areas, stockpiled material, and operating surfaces will be managed to protect against
<br /> pollution of both surface and groundwater, during and after the operation. The Division determined the
<br /> stormwater management plan satisfied the requirements of Rule 6.4.7(2)(c) and the applicable
<br /> performance standards of Rule 3.1.
<br /> The stormwater management plan submitted in Exhibit G includes a series of ditches, sediment ponds,
<br /> and culverts designed to control runoff from a 100-year, 24-hour storm event. All structures are designed
<br /> using the most conservative conditions,typically the greatest disturbance area. The system design follows
<br /> guidelines established by El Paso County and the City of Colorado Springs, and are in compliance with
<br /> the Division of Water Resources' (DWR's) requirements. The Division determined that the stormwater
<br /> management plan satisfied the requirements of Rule 3.1.5(10) and (11), Rule 3.1.6, and Rule 6.4.7.
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