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COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division <br />Rationale - Page 3. Permit No. COR- 030000 <br />H. CHANGES IN THIS GENERAL PERMIT (cont.) <br />I. Stormwater Management Plan (SWMP) — Contents <br />The SWMP Contents section has been modified. Some of the changes are limited to organization of <br />information, which does not require modification of an existingpermittee's current SWMP. Most of the SWMP <br />changes involve either clarifications, reformatting, or taking recommendations from the Division's SWMP <br />guide and making them permit requirements (e.g., vehicle tracking controls, BMP installation specifications). <br />If an existing permittee (Le., those with permit coverage before June 30, 2007) followed the recommendations <br />in the SWMP guide (Appendix A of the permit application), then their SWMP will presumably meet the new <br />requirements. However, for any existing permittees who did not follow the applicable SWMP guide <br />recommendations, their SMWP must be amended to include the new required items: <br />-SWMP Administrator <br />- Identification of potential pollutant sources <br />-Best Management Practices descriptions and installation specifications, including dedicated concrete or <br />asphalt batch plants; vehicle tracking control; and waste management and disposal (including concrete <br />washout activities). <br />For existing permittees, any SWMP changes based on the change in permit requirements must be completed by <br />October 1, 2007. The plan is not to be submitted to the Division unless requested, but must be available on site <br />as outlined in Part I.D. S(b) of the permit. <br />The BMP requirement clarifications included in this renewed permit in no way imply that adequate BMPs to <br />address all pollutant sources at a permitted site were not required in previous permits. The revised <br />requirements are intended only to better clarify SWMP content requirements and provide improved direction to <br />permittees. <br />The SWMP changes are listed below. All new applicants (after June 30, 2007) for permit coverage for their <br />sites must fully comply with the new SWMP organization, plan requirements, and implementation. <br />Site Description: The requirement to provide an estimate of the run -off coefficient has been removed. <br />The run -off coefficient as currently utilized in the SWMP may not contribute sufficiently to permit <br />compliance to justify the effort in determining accurate values. See Part I. C.1 of the permit. However, <br />the Division still encourages use of the coefficient as needed to adequately evaluate site - specific BMP <br />selection and design criteria (e.g., pond capacities, BMP location, etc.) See Section C.2 of the SWMP <br />guidance (Appendix A of the permit application). <br />2. Site Map: The requirement to identify boundaries of the 100 year flood plain has been removed. The <br />boundaries as currently utilized in the SWMP may not contribute sufficiently to permit compliance to <br />justify the effort in determining their location. See Part I. C.2 of the permit. <br />3. Stormwater Management Controls: This section has been modified to require identification of a SWMP <br />Administrator and all potential pollutants sources in the SWMP. See Part I.C.3 of the permit. <br />a) The SWMP Administrator is a specific individual(s), position or title who is responsible for the <br />process of developing, implementing, maintaining, and revising the SWMP. This individual <br />serves as the comprehensive point of contact for all aspects of the facility's SWMP. This <br />requirement may necessitate changes to existing permittees' SWMPs <br />