Professional Engineers Of North Carolina

SUM 2014

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23 Summer 2014 the Professional Engineer be developed with the goal of generating state stormwater permits that comply with state water quality standards. • To consult with the EMC in developing a rule to establish a fast-track permitting process for issuing state stormwater permits without a technical review when the permit applicant complies with MDC and submits a permit application prepared by a qualifed professional. The rule shall provide for: 1. A process for permit application, review and determination. 2. A process for ensuring compliance with MDC. 3. A specifcation for the types of professionals who are qualifed to prepare a permit application submit- ted pursuant to this section and the types of qualifca- tions such professionals must have. 4. A process for establishing the liability of a qualifed professional who prepares a permit application for a Product – Current Status Description Action needed from MDC Using the Discrete SCS Method for Computing Water Quality Volume – AP- PROVED, on DEMLR's web site to provide a voluntary option for designers. Allows designers to use the discrete SCS method to compute runoff volumes if they use the 90th percentile storm event and analyze pre versus post development runoff volumes. Information item but updates to BMP manual should facilitate use of this option. Options for Meeting Diffuse Flow Requirements – APPROVED, on DEMLR's web site to provide guidance for designers and reviewers. Clarifes and expands the options for designers to meet diffuse fow requirements in the stormwater and riparian buffer rules. Information item but updates to BMP manual should facilitate use of this option. Standards for Relaxing the Two-foot separation from SHWT for Infltration Devices – APPROVED, on DEMLR's web site to provide guidance for designers and reviewers. Allows designers to reduce the separation between the invert of infltration systems and the SHWT from 24" to 12" when the design is unlikely to cause water table mounding. Information item but updates to BMP manual should facilitate use of this option. Options for Meeting the No Direct Discharge to SA Waters Requirement – APPROVED, on DEMLR's web site to provide guidance for designers and reviewers. Clarifes and expands the options for designers to meet the coastal rule prohibition on new direct stormwater discharges to shellfshing (SA) waters unless effective infltration is provided. Information item but updates to BMP manual should facilitate use of this option. Defnitions of Key Stormwater Terms – POSTED on DEMLR web site to guide designers and reviewers, request to include next time the stormwater defnitions rule is updated (15A NCAC 2H .1002). Provides defnitions for frequently used terms that are not currently defned in stormwater rule language. Information item but request that updates to the BMP manual use these terms consistently with the defnitions provided. Alternative Design Criteria for Wet Detention Ponds – conveyed to the MDC Team for consideration and adoption. Provides an option for designing wet detention ponds that is based on hydraulic retention time rather than the SA/DA ratio. Request that the MDC consider this approach as they develop the wet pond MDCs and updated chapter. Technical Review Workgroup concerns, recommendations and actions

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