John Huisman – NC DWQ NC Water Quality Commission – January 11, 2012 NC Environmental Management Commission – January 12,

 Background  New Development Rule Requirements  Differences between Falls & Neuse Requirements  Program Submittal Requirements  Overview of Local Government Programs  Recommendation for Approval 2

Falls Lake Local Governments Municipalities Butner Creedmoor Durham Hillsborough Raleigh Roxboro Stem Wake Forest Counties Durham Franklin Granville Orange Person Wake Includes 14 Jurisdictions Chl-a standard violations throughout the lake (shown in red) 3

.0275 Purpose and Scope (Goals) .0276 Definitions .0277 Stormwater – New Development .0278 Stormwater – Existing Development .0279 Wastewater Discharges .0280 Agriculture .0281 Stormwater State & Federal Entities .0282 Trading 4

 Requires all LG’s in Falls Watershed to implement stormwater programs for new development activities.  Programs address the following rule requirements:  Post-construction runoff N & P rate targets  Land disturbance thresholds  Onsite treatment criteria  Peak flow match (1-year 24 hour storm)  Compliance with existing Neuse Buffer Rules 5

RequirementFalls RuleNeuse Rule Applicability All Communities in Watershed Listed Communities Only Phosphorus Load Reduction RequiredNot Required Post-construction N&P rate targets 2.2 lbs/ac/yr TN.33 lbs/ac/yr TP 3.6 lb/ac/yr TN No TP requirement Land disturbance thresholds ½ acre residential 12,000 sq/ft commercial 1 acre residential ½ acre commercial Onsite treatment criteria >1 acre = 50% reduction <1acre = 30% reduction 6 lbs/ac/yr TN residential 10 lbs/ac/yr TN commercial Accounting Tool Basis BMP Effluent Concentrations & Volume Reduction BMP % Reduction Efficiencies DIFFERENCES BETWEEN FALLS AND NEUSE NEW DEVELOPMENT STORMWATER RULE REQUIREMENTS 6

 January 2011 – Effective date of rules  March EMC approved model program  August LG submitted local programs to DWQ for review  January DWQ Makes recommendations to EMC  July LGs adopt and implement local program 7

 All 14 LG’s submitted programs for approval  Four local governments used consultants  Three are using the model ordinance intact  Eleven have incorporated model ordinance language into existing ordinance or UDO  Fully adopt / implement by July 2012  City Of Durham and Raleigh already implementing 8

I. Info For EMC ApprovalII. Appendix of Supporting Info III. Supplemental Info (Optional) Adoption Timeline & Effective Date Other Stormwater Programs Statement of Buffer Compliance State & Fed Entities Enforcement Area of Applicability Maintenance & Inspection Program List of Forms Ordinance Nutrient Loading Accounting Tool Equivalent Program Option Program Contacts Professional Qualifications Stormwater Map Copies of Forms Program Approval Process Ordinance Changes Land Use Planning Appeals Process Exceeding Minimum Reqmts. Local Government Program Submittal Requirements 9

 Conducted by Nonpoint & Stormwater staff  Steps  Programs Submitted: August  DWQ Reviews: September - November  Comments to LG’s: End of November  LG’s submit revised programs: December  Submittals well organized & complete  Minor revisions / clarifications resubmitted 10

 Wake County - hybrid accounting tool  Five LG’s will form Stormwater Utility  Person, Granville, Butner, Creedmoor, & Stem  Three LG’s will not enforce on State & Fed  Durham, Wake Forest, & Wake County  Two LG’s updating UDO with revised text  Hillsborough & Creedmoor 11

 Request approval of the 14 Falls Lake Local government new development stormwater programs  Hillsborough & Creedmoor: Approval contingent upon receiving updated UDOs.  Request delegation of Authority to the Director to grant final approval:  Conditionally approved programs  Future program amendments 12

John Huisman - NC Division of Water Quality Nonpoint Source Planning Unit DWQ Falls Lake Website: