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COLORADO DEPARTMENT OF PUBLIC HEALTH & ENVIRONMENT -.Water Quality Control Division <br />Rationale - Page 2 Permit No. COR-040000 <br />•. INTRODUCTION <br />d. SWMP Certification: The previous permit included a requirement that the copy of Stormwater Management Plan that <br />remains at the facility had to include the certification language and signature. This requirement has been deleted. The <br />signatory requirements of Part LE.S only apply to the SWMP if it is to be submitted to the Division or to EPA. See Part <br />LD.Zb. <br />Deadlines for SWMP Changes. The section on permittee-initiated review and changes to the SWAP has been amended <br />to clearly indicate the deadline by which SWAP changes and implementation are required. Note that this time frame is <br />not a grace period from permit violations. If the original inadequacy constitutes a permit violation, then that violation is <br />not deferred by the timeframe allotted for corrective action. The time limits are those that the Division considers <br />reasonable for making the necessary repairs or modifications; and are included specifically so that inadequacies are not <br />allowed to persist indefinitely. Failure to take the necessary corrective action within the stipulated time limit constitutes <br />an additional and independent permit violation. See Part LD.2.c.2). <br />6. Inspections: <br />a. Preventive Maintenance vs. Comprehensive Inspections; Active Mines Only. The sections on preventive maintenance <br />(Part LB.4.c) and comprehensive inspections (Part LD.S) have been changed to emphasize that regular preventive <br />maintenance measures are distinct from specific comprehensive site evaluation. <br />fined. See Part LA.2.b. <br />b. The term "qualified personnel, " as used in the section on comprehensive inspections, has been de <br />c. Inspection Findings: The section on inspection findings has been changed to emphasize that any repairs or maintenance <br />needs identified by the inspection must be completed immediately. Also, any SWMP changes needed as a result of an <br />inspection must be completed and implemented within 60 days of discovery, as per the section on permittee-initiated <br />SWMP changes. See Part LD.S.d. <br />d. The term "significant observations, " as used in the section on comprehensive inspections, has been defined. See Part <br />LD.S.d.3. <br />7. Total Maximum Daily Load (TMDL): A section on TNDLs has been added. This section gives a general outline of the <br />additional requirements that may be imposed if the facility discharges to a waterbody for which a stormwater-related TMDL <br />is in place. See Part LD.8. <br />8. Annual Reports: The description of Annual Report requirements has been expanded to clarify that any decrease in inspection <br />frequency due to site inactivity must be explained in the report. Also, the due date for the Compliance Report has changed, to <br />cover a longer part of the permit term. See Part I.E.I. <br />9. Signatory Requirements: For public entities, the term "duly authorized employee, " as used in the section detailing who may <br />sign reports to be submitted to the Division, has been clarified. See Part LE-5.a. <br />.10. Record-Keeping: The section describing which records must be maintained and for how long has been clarified. See Part <br />LB.6. <br />IL Changes in Discharge: The section on the types of discharge or facility changes that necessitate Division notification has <br />been clarified. See Part II.A.1 <br />12. Non-Compliance Notification: The section on notification to the Division regarding instances of non-compliance has been <br />amended to clarify which types of discharges require notification. See Part U A.3. <br />13. CDMG: The name of the Division of Minerals and Geology, orDMG, has been changed to the Colorado Division of <br />Reclamation, Mining, And Safety, or CDRMS, as per state statute. All references to this agency reflect the new name. <br />Numerous other minor changes were made for clarification purposes only.