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COLORADO DEPAR77HENT OF HEALTH, Water Qualiry Control Division Rationale • Page 3. Permit No. COGS00000 7//. COVERAGE UNDER THIS PERMIT disnicts or any entity created by or pursuant ro State law. (Note: the Transportation Act use a different classification scheme jot municipaUtiv than is outUned in EPA's municipal stormwater permit rcquirtmems. Under the 'Transportation Act, the determination of the sue of a municipaliry include the total population of the municipa/iry. For erampk, a rounty with a tola7 population of os+er ]00,000 is not eligible jot the Transportation Act exemption, teen though the saint rounry may not be required to obtain a municipal permit.) Stormwater discharge associated with industrial activity (except for airports, .sham electric power plams, or uncontrolled sanitary landfills), that art owned or apemted by a minor municipality are not required to apply jot or obtain a stormwarer pmnit at this tune. (Note This aemption does not apply to other, privately owned indtstrie within the saris minor municipality.) These facilitie are nor pmnanently erempred from the regu4uion, bur art instead glared in Phase 77 of the stormwater program. Phase !I facilitiv, including minor murticipalitiv, are curremty under a moratorium, which annpts them from pmnit requiremems under the stormwater program. /t is expected that roverage will be required at some future date. IV AI'PLICA77ON AND CERTU=ICATTON A. AdcUtional AppUeaRon Reatdremtnts nth the inclusion of srormwartr provisions in this permit, the application requirements hoer changed to some event as well. /n addition to tlu application rcquiremems outlined in the previous permit, the following must afro be submined: I. Dvcriprion of stormwoter discharge, including drainage area. 2. Desmptian of proem and proposal but managemem practice at site, including map. 3. Any esistrng watts quality data on stormwattr discharge. 4. For new jacilitiv (beginning operations after October 1, 1992), and for all other jacilitiv applying afrer July I, 1993, certification as to the preparation oja SWMP. (See Section V.B.3.a of the Rationale for SWMP cert~cation requirements for aisting faciGtie applying on time.) 14. Pctmit Ccrtifirations This permit is malt up of stsrro! parts, some of which do not apply to al! perminee (i. e., while mast jacilitiv will require rosrrage under the stormwarcr section L C, many will not require rovtrage under the proress watts section I.B). Therefore, the individud centcation prepared for tack appUcant wiU iMicate whether or mt Part LB of the permit must be fopowcd by that applicam. In all case (except as noted in Section 71/. C, above), Part I. C must be fol owed. (!n the absence of suds indication from the Division, the perminee will be reponsibk jar determining arut then romplying with the applicable sections in Part L) /n odditian, all permitttes will bt required to comply with Pair I, subparts A, D, E aid F, and aU of Part II of the ptrmil. V. TERMS AND COND177ONS OF PERMIC A. Process Water Dtseharees Numeric Limitations: Numeric limits will be applied for some of the industrial cnregoriv aos+ered by this permit. Thee limits are from the EPA Federal Guidelines for the applicable point source category, as follows: a. Mineral mining and processing poim source category - 40 CFR 436 -subpart $ (meshed stone), C (construction sand and grave!), D (industrial sand), R (phosphate rack) -and all other industrial facilitiv rosrred order SIC Cade 14, except those specifically !'sited in paragraphs b and c below, and concrete