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1 • <br />.~ <br /> <br />• <br /> <br /> <br />II <br />1 <br /> <br /> <br />,• <br /> <br />Figure 2.03.10-1 (con't) <br />PART I <br />Pan~• 3 of i8 <br />PEP,HIT N0: Co-0036943 <br />EFFLUENT LIMIT?.'IONS (Continued) <br />CONTAIYMENT REQUIREMENTS (Coal Mines only) <br />The `acilities shall be designed, cens[ructed and maintained to <br />contain or treat the volume of water Prem active mining areas, <br />orecarat~on plants, and associated areas •.ahich would result from a <br />i0-vear, ~a-hour, prccioi[atioc even[. The ter-,'~1~~-yea r, ?L-hcur <br />orecipitation even[" means the maximum c4-hour precipitation even[ with <br />a crobaole r?occurrence interval of once in l0 •/ears. <br />'+ithin 90 days of the effective date of the permit, the permittee <br />shall submit verification that Che facility F~as been designed, <br />constructed and maintained in accordance with tine criteria above. <br />This :-eri:`icaticn shall also identify the gauge station used and the <br />.0-year, 2L-hour orecipi[a[ion figure (in inches Of rain). <br />Such verification may be in the form of a latter or other indication <br />from the Colorado Hined Land Reclamation 9czrd, the Federal Office of <br />Surface `!fining, the Federal Envirenmentai ?rotec[icn Agency, or other <br />::pprooriate agency acceptable [o the Colorado 'dater Quality Con L of <br />Division, ;rating that the above criteria have been ,net. <br />STiRM _REMPTION~ <br />:+nv oierf;.;,,~, increase in volume of a discharge, ~r discharge from a <br />.,.-oass system, which is caused by pre,;io~tatior or snco-:r:elt, shall <br />net oe subj?ct :o :he limitations se[ forth in Part A-l, page Z o' tti; <br />oermi[. This exemp:~on :s avail,:bie r;n!•/ if .he '~cili[•: tias me[ the <br />10-+e.~r, ~~-Hour ,:ontr,inmen[ equirements. <br />~~r.•eerai ?,~r,ister, '/ol. !Jq, :jC, December 29, In7?~ <br />./'.' <br />REVISED ~;ay 15, 1981 <br />