1. Environmental Management Commission January 2014
Approval of NCDOT’s Falls Lake New & Existing Development Stormwater Program & Delegation of Future Approval
Good afternoon chairman Elken and members of the committee. My name is John Huisman. I work in the Nonpoint Source Planning Unit of the planning section here at DWQ. I am here today on behalf of the Falls Lake Watershed Oversight Committee to request approval of Agriculture Nutrient Tracking & Accounting Methods for the Falls Lake Watershed. I am also joined by my colleague and fellow WOC member Kelly Ibrahim with the Division of Soil & Water Conservation who has graciously agreed to assist in answering any questions you may have following the presentation.
I would like to point out that the Water Quality Committee saw a similar presentation at your July meeting when you approved the Ag accounting tools for the Jordan Watershed. The accounting methods I will review today are similar to those you approved for Jordan in July with slight variations given the different reduction needs in between the two watersheds.
Environmental Management Commission
January 2014

2. Background
The Falls Lake Watershed is located in the upper portion of the Neuse River basin. It is 770 square Miles in size spans portions of six counties (Wake, Durham, Orange, Granville, Person, and Franklin). And includes portions of seven municipalities Raleigh, Durham, Hillsborough, Creedmoor, Butner, Roxboro, Stem. The lake serves as a water supply to over 450,000 residents in Wake County.
For the purpose of discussing the strategy, the Upper watershed is defined as the areas of the watershed draining to the portion of the lake above NC-50. The lower watershed is the portion of the watershed draining to the the portion of the lake below NC-50
The lake is currently listed on the EPA 303d list for chl-a violations throughout the lake.
Senate Bill 981 – Charged the EMC with adopting NMS no later than January 2015

3. Falls Lake Strategy - Overview
Rules Effective January 2011
Reduction objectives: 40% TN 77% TP
Baseline: 2006
Staged Implementation
Stage I ( )
Initial reductions watershed wide
Achieve standards in lower lake
Stage II (2021 – 2036)
Additional reduction in upper watershed
Achieve standards throughout lake by 2041

4. Falls Lake Rules (15A NCAC 2b)
.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

5. State & Federal Entities Rule Falls (.0281)
Stormwater requirements for state & fed lands
Applies to NCDOT & Non-DOT Entities
Similar to requirements for local governments
New Development - N & P loading export targets
Existing Development - % reduction goals
Accounting tool
Modified Jordan / Falls Lake Stormwater Nutrient Accounting Tool (JLSLAT)

6. NCDOT Requirements (.0281 ) Implement Single Stormwater Mgt. Program
For New Development & Existing Development
New Development
Non-Road Projects: 2.2 lbs/ac/yr TN & .33 lbs/ac/yr TP
New DOT Road Projects meet buffer requirements
Existing Development
Stage I: Reduce loads back to 2006 baseline
Stage II: Achieve overall N & P % reductions
Minimum of 6 stormwater retrofits per year
Annual Reports

7. NCDOT Implementation Timeline
January Rules Adopted
July 2012
EMC Approved NCDOT Accounting Tool & Baseline Loads
July 2013
NCDOT Submitted New & Existing Dev. Stormwater Program
January 2014
DWR makes recommendations to EMC
January 15, 2014
DOT Implements EMC Approved Stormwater Program

8. NCDOT New Development Program Elements
Post-construction runoff control
New Roads & Non-Road Development
Process for DWR review of projects
Delineate scope of vested projects
Define lower thresholds of significance

9. NCDOT Existing Development Program Elements
Nutrient Loads for Baseline & Interim Development
Baseline Loads Approved by EMC July 2012
Interim Load Calculations
Implementation Rate & Schedule of BMPs
Stormwater System Inventory & Prioritization
Illegal Discharge Detection & Elimination
Fertilizer Management Education

10. NCDOT Existing Development Interim Loading
Development between Jan. 1, 2007 – Jan. 15, 2014
Method
Post-Dev. load vs. uniform Pre-Dev. load
Uniform annual load option provided in rule
Result: Net Decline In Interim Development Loads
99% of interim development secondary roads
Low road runoff concentrations
Does not change BMP implementation rate

11. Annual Reporting Required for both New & Existing D.
Summarize Implementation Activities
Types of projects
Describe measures implemented & offset payments
Reductions achieved
Submitted in conjunction with NPDES Report

12. Recommendations
Division requests that the Commission approve NCDOT's Falls Stormwater Program as meeting the minimum requirements established in Item (9) of the rule.
Staff also requests delegation of authority to the Director to approve any subsequent program amendments that the NCDOT may propose in the future. The Director would forward unique future program revisions of concern to the Water Quality Committee for review.

13. Questions? John Huisman - NC Division of Water Resources
Nonpoint Source Planning Unit