2018-02-02_REVISION - C1981019 (9)

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PART II Pen -nit - Page 25 Permit No. COR -030000 11. CHANGES IN THIS GENERAL PERMIT (cont) Storinivater Nallaeem(sur Plan (4WMP) -- Contents The SWMP Contents section has been modified. Some of the changes are limited to organization of information, which does not require modfcation of an existing permittee's current SWMP. Most of the SWMP changes involve either clarif cations, reformatting, or taking recommendations from the Division's SWMP guide and making them permit requirements (e.g., vehicle tracking controls, BMP installation specifications), If an aristing permittee (i.e., those with permit coverage before June 30, 2007),followed the recommendations in the SWMP guide (Appendix A of the permit application), then their SWMP will presumably meet the new requirements. However, for any existing permittees who did not follow the applicable SWMP guide recommendations, their SMWP must be amended to include the new required items: -SWMP Administrator -Identification ofpotential pollutant sources -Best Management Practices descriptions and installation specifications, including dedicated concrete or asphalt batch plants; vehicle tracking control; and waste management and disposal (including concrete washout activities). For existingpermittees, any SWMP changes based on the change in permit requirements must be completed by October], 2007. The plan is not to be submitted to the Division unless requested but must be available on site as outlined in Part LD.5(b) of the permit. The BMP requirement clarifications included in this renewed permit in no way imply that adequate BMPs to address cull pollutant sources at a permitted site were not required in previous permits. The revised requirements are intended only to better clarify SWMP content requirements and provide improved direction to permittees, The SWMP changes are listed below. All new applicants (after June 30, 2007) for permit coverage for their sites must filly comply with the new SWMP organization, plan requirements, and implementation_ Site Description: The requirement to provide an estimate of the run-off coefficient has been removed The run-offcoeffcient as currently utilized in the SWMP may not contribute sufficiently to permit compliance to justify the effort in determining accurate valines. See Part LC.1 of thepermit However, the Division still encourages use of'the coefficient as needed to adequately evaluate site-specific BMP selection and design criteria (e.g., pond capacities, BMP location, etc.) See Section C.2 of the SWMP guidance (Appendix A of the permit application). 2. Site Map: The requirement to identift boundaries of the 100 -year flood plain has been removed. The boundaries as currently utilized in the SWMP may not contribute sufficiently to permit compliance to just6 the effort in determining their location. See Part L C.2 of the permit. 3. Stormwater Management Controls: This section has been modified to require identification ofa SWMP Administrator and all potential pollutants sources in the SWMP. See Part LC.3 of the permit. a) The SWMP Administrator is a specific individual(s), position or title who is responsible for the process of developing, implementing, maintaining, and revising the SWMP. This individual serves as the comprehensive point of contact for all aspects of the facility's SWMP. This requirement may necessitate changes to existing permittees' SWMPs.