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%~ ` - TerraMatrix tags tw,e grove Foea . PO sox mote Steamboat tiprings, Cdorado 80477 Sat-e~so • tax ~ae~e-eoae Much 16, 1994 Mr. Jon Rubic Colorado Department of Health Water Qualitq Control Division 4300 Cherry Creek Drive South Denver, Colorado 80222 iii-iiiiiiiiiiiii iii 999 AE~E~~~c ~R181 ~~~sian o~,yl,~eds "J'7 a G~0~09y Re: Rerr Coal Company (Permit No. CO-0043567) -Request for Permit Conversion Dear Mr. Rubic In October, 1993, Rerr Coal Company (Rerr) filed an appliption with the Water Quality Control Division (WQCD) for permit conversion to address [he antidpated temporary discharge of accumulated mine water resulting from final backfilling activities for an existing mine pit consistent with appliable regulatory requirements. As a result of this application, the existing mine approval (Permit COG850021) for stormwater discharge under the Coal General Permit was convened to an individual Industrial Discharge Permit (Permit No. CO-0043567). During the period of active mine water discharge, Rerr complied with all applicable permit provisions including spedfic sampling and reporting requirements. Mine water discharge effectively ttased on January 22, 1994 and no further mine water discharge is antidpated. With this cranstnitul Rerr, therefore, respectfully requests that the WQCD convert the existing approved permit (Permit No. CO-004356 back to a site stormwater approval under the Coal General Permit. Al] accumulated mine water has now been dischazged and all mine pit areas have been backfilled, regraded, and surface drainage has been reestablished as illustrated by the accompanying photographic rnpies. All future flows to existing sedimentation points and discharge from the associated CDPS discharge points will be solely from surface runoff from mine disturbance areas with no mine or process water contributions. Rerr currently antidpues completion of punned soil material replacement and revegeiaiiun un the reclaimed areas by late fall 1994. At that time, Rerr plans to submit a request for consideration of a modification of effluent limitations cronsistent with the change from active to postmining out[all status. Given that initial snowmelt has begun in the area, Rerr would greatly appredate your assistance in expediting this request so as to avoid the additional sampling/analysis requirements under the current approved permit. I would also request that in the permit conversion process you refer back to my letter of December 16, 1993 (copy attached) relative to consideration of the following specific issues: • Effluent limitations for iron for older discharges (3.Omg/1 vs. 1.0 mg/l) • Stormwater Management Plan requirements • New vs, existing facility (relative to economic and other impacts with respect to effluent limitations) Steamboat Springs, CO • Denver, CO .Seattle, WA • Juneau, AK • Santiago, Ctdle SA