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COLORIUO DEP;IRT;LIErVT OF PUBLIC HE;ILTf1:I,vD ENV1ROh'rWE:VI, lVutrr Quuhry Corurul Di~isian <br />Rationale - ,-Intendment No. 1. Page 10. Pennu N'u CO-0000221 <br />• C. PF,RLIIT CH;t;VGES <br />Ls a result ujdtis amendment, pages 2, 3, S, 7, .Y, 9, /0, ll, 14. IJ. 28 IFigure 3) nttd 29 (Figure 4) are amended <br />Also, page 29n (Figure 5) is added to the pernut. <br />Ian C Kubic <br />June 1. 1999 <br />Vll. REFERENCES <br />A. CO Dept. of Public Hen[th and Envtrorrment, Water Qualiry Control Commission. Basic Standards and <br />,LletltndoingiesLr Surface Water (5 CCR 1002-3I). Denver. CDPHE. as revised 1/11/99. <br />B. CO Dept. of Public Health and Environment. Water Qualiry Control Commission. Regulations far Effluent <br />Limitations (S CCR 1002-62). Denver: CDPHE. as revised 1!/9/98. <br />C. CO Dept. of Pteblic Health and Environment, Water Qualiry Control Commission. Colorado Discharge Permit <br />Svstem Regulations (5 CCR 1002-61). Denver: CDPHE, as revised 3/9/99. <br />D. U. S. Government. Office of the Federal Register, National Archives and Records Administration. Cade ojFederal <br />Regulations (Pan 4341. Washington: 1997. <br />VIILPUBLIC NOTICE COtYItbIENTS <br />The permittee submitted comments: <br />• 1. They requested a change in the legal contact person and a change in the mailing address for the facility contact. <br />T)tese changes are being made. <br />2. The permittee requested elaboration on the monitoring history described in section Vl. B. 1. regarding oil artd grense. <br />This is being added. <br />3. The permittee stated that otters for the new sites (outfalls 0/2-017) is difficult. They are installing remote <br />monitoring equipment at these outfa[!s to ease monitoring for flow and pH. They requested that the oil attd grease <br />frequency be reduced to monthly. As stated earlier in this rationale, no oil/grease sheen ltns ever been observed at <br />any ojtheir outfalls that receive only surface nrnofj Additionally, they will install oil booms at these outfalls for <br />added security. On this basis, the monitoring frequency far oil and grense at these outfalls will be monthly. <br />4. The pennittee asked that the previous winter monitoring exemption be extended nvo months. As modified by this <br />amendment, the exemption is not limited by months; it is based on weather and access conditions. This will address <br />the permittee's concerns as stated in the draft amendment. <br />5. The pennittee noted that the amendment included requirements for autjall 007 in Part 1. A. 4. ojtlte permit. This <br />ourjnll was deleted some rime ago (prior to the most recent permit renewal) but was inadvertently left in rite permit. <br />It will be removed nosy. Also, the perntittee Hared that in nvo places, the permit refers to copies of WET-related <br />infonnntion being submitted to EPA as attachments to the discharge monitoring reports (DMRs). Since DNIRs are <br />no longer required to be subntiaed to EPA, these references wit! be deleted. <br />6. The permit previously waived 1VET testing for outfalls 004 and 008 for the first calendar quarters. This waiver is <br />being carried over via this amendment. <br />No other pam s« 6muted comments. The amendment wi/I be modrfed ns stated in dte above paragraphs. <br />Jon C. Kubic <br />Jnly 27, 1999 <br />• <br />