1. What is Required to Achieve Worksheet 10
NPDES & PCSM Permitting Workshop
May 24, 2016
Water quality compliance for Nitrate

2. Flow Chart D Are you meeting CG-1/CG-2? Yes, left side of chart
No, right side of chart

3. Flow Chart D: Meeting CG-1/CG-2
Is 90 percent of the disturbed area controlled by a BMP?
Yes, to Worksheet 10
No, to Worksheet 12

4. 4 points are required for a “yes” rating
Because soluble pollutants, once they are contained in runoff, are extremely difficult to remove, prevention or reduction on the land surface that generate stormwater, as achieved through Non-Structural BMPs described in Chapter 5, is the most effective approach.
The control of nitrate from new development should focus on reduction of fertilizer applications rather than removal from runoff.
Defining distinction for the Non-Structural BMPs is their ability to prevent stormwater generation and not just mitigate stormwater-related impacts once these impacts have been generated.
Prevention and Non-Structural BMPs go hand in hand and can be contrasted with Structural BMPs that provide mitigation of those stormwater impacts, which cannot be prevented and/or avoided.
1 point

5. Ensure these BMPs meet all the criteria on Pages 18–26 in Chapter 8

6. Best to discuss with the reviewer prior to submission

9. Standard Worksheet 10 Ensure BMPs are clearly shown on PCSM Plan
Ensure detail and long-term operation and maintenance schedule provided

10. Standard Worksheet 10
If meet Worksheet 10, then assumed water quality compliance
If not, got to Worksheet 12 (only for NO3)

11. Reading District Office
Questions?
Mark Lonergan
Reading District Office
Bureau of Clean Water