|
Appendix 4.7-7, Page 1 of 23
<br />CERT/FICATION RENEWAL
<br />AUTHOR/ZAT/ON TO DISCHARGE UNDER THE
<br />CDPS INDUSTRIAL GENERAL PERMIT
<br />FOR COAL MINING FAC/LITIES (SIC No: 7221)
<br />Category 07, Sub-category S, General Permits, Current jet 5556/year per CRS 25-8-502
<br />This permit specifically authorizes: C. B. Minerals Company, L.L.C
<br />Rushton 0. Backer, President and Director
<br />8717 De/gany Avenue #1 /S
<br />Playa del Rey, CA 90293
<br />(3/O) 827-1934
<br />with the jaciliry contact of.' Jantes Stover, Consu/tingEngineer
<br />(970) 245-4/01 Fez (970) 242-7908
<br />Permit No. COG-850000
<br />Facility No. COG-850003
<br />COMG No. C-84-065
<br />Page t
<br />to discharge from the jaciliry identified as the Caal Ridge Na. 1 Mine, located in the NW %., Section 6, T65, R90W; 1 % miles east ojNew Castle, C0: Garfield
<br />County; as shown in Figure ! ojthe permit from discharge point 001, as shown in Figure 1 ajthe permit and further described in this table.
<br />--'..,Ouija/1, q~~;~;. AchvelPosst}Llimng__-.; Design Capactty,_;,~~_ llO Xr„24-FlrEvent„_ ~Y„-.,...~~„~,~y~Regep?m8,_Water ._~-~,'-:-,."'
<br />..
<br />001 _. Post Mining _ 1.01 MG 0.414 MG _ Unnamed Tributary to the Colorado River
<br />The discharge goes to an untamed tributary to the Colorado River, which is within Segment 4, Lower Colorado River Sub-basin, Lower Colorado River Basin,
<br />found in the Classifications and Numeric Standards for the Lower Colorado River Basin (S CCR 1001-37); last update effective February 30,1002. Segment
<br />4 is classified jar the following uses: Recreation, Class 2; Aquatic Lije, Class 2 (Cold); Water Supply; Agriculture. The Divisiar reviewed this facility on brae
<br />1l. 200?, and determined that the anfidegradationprtsumption was overcome because discharge does not occur during low flow periods.
<br />Flow, MGD Report Report Monthly Instan(aneous or Continuous Design Capacity
<br />~tleable Solids, tnUl Report D.S" Monthly Grab Federal BAT
<br />pH, s. u. Report 6.5-9.0 Monthly /n-situ Water Quality Standards
<br />Oi! and Grease, mg/I Report /0 Monthly Visual Stare Effluent Regulations
<br />Salinity, mgR Report Report Quarterly Grab Salinity Standard (Reg. No. 39J
<br />'The discharge may be eligible far nn exemption from this (imitation ifit is demonstrated that the dischrtrge ocnvred rts n result of precipitation greater Ihnn dre nssocimed 10 year,
<br />34 how' event. See permit, Pnrt LB.f.d).
<br />The activity involves discharge ojsurjace runoff only jrom apost-minirsg area. NO other sources ojwasrewater will be discharged.
<br />Orrtjall(s) 007 shall be the discharge ojfina/ treated water prior to enteritrg an unnamed tributary to the Colorado River. Effluent limitations are spec fed
<br />below and in Par( /.B.1.6) and c).
<br />The permittee is encouraged to read the genera! rationale jar an understanding ojhaw this permit was developed a»d to read the permit to see what
<br />requirements esist. Within the body of the permit itself, monitoring requirements are specified in Part LB3.b)), the Stormwoter Management Plan
<br />requirements are specified in Parf /.B.1. and notificalian requirements jar effluent vialatia+s are addressed in Part ILA.
<br />Salinity (7'DS) monitoring ojthe discharge will be required, as shown in the table above. Phosphorus monitoring ojthe discharge will not be required
<br />Based upon previous discharge may r(oring data, the permittee has generally maintained compliance wi[h their permit., _
<br />Certi tcation: Based on Jte above information, C. B. Minerals Company, L.L.C. is certified (o dischargejrom the Coal Ridge No. I Mine under the general
<br />permit for coal mining, identified aspennit number COG-850000. Ail correspondence relative to this faci(iryshould reference the specific facility number,
<br />COG-850005.
<br />Christopher L. Gates
<br />June / 1. 3003
<br />I, 2002
<br />Jmre 30, 2007
<br />
|