The Urban Connection: NPDES and Storm Water in the State of Delaware Sandra M. Goodrow, Ph.D.,...

The Urban Connection:NPDES and Storm Water in the

State of Delaware

Sandra M. Goodrow, Ph.D., C.F.M.Environmental Scientist IVSurface Water Discharge Section

Presented at the Third Annual DEAWRA SymposiumNovember 19th, 2013

Overview of NPDES Programs National Pollutant Discharge

Elimination System

A system of regulating point sources of pollution to surface waters

Typical point sources include treated process water discharges from industry What is a

permit?

A. An agreement

B. A license

C. A stick

D. All of the above

NPDES Storm Water Program Phase I 1990

Industrial

11 Categories, including construction

Large and Medium MS4s Medium: Population of 10,000-

249,999

Large: Population of 250,000 or more

Phase II 1998

Small MS4s in Urban Areas

So, is it the population or…..

Stormwater is the Urban Connection

“We have met the enemy- imperviousness”

(Tom Shueller, Center for Watershed Protection)

Linking Land Use to Water Quality

Stormwater is the Urban Connection

What is Urban?Higher Population Density

May be cities, towns or sprawl

The Bureau of Census Released its 2010 Census in late 2011 Some communities in Delaware that

were not currently regulated grew in population, so that they now require permit coverage

“Urban Area”

Phase I 1990 Large and Medium MS4s Industrial Facilities Intended to cover the larger source

contributorsPhase 2 1999 Small MS4s in “Urban Areas” Intended to more fully cover the urban

contribution

Industrial Storm Water Program Standard Industrial

Classification (SIC) Codes or “Activity Code”

Examples of Sectors (or Classes) of SIC Codes:

Sector D: Asphalt Paving

Sector J: Mineral Mining

Sector M: Automobile Salvage Yards

Sector P: Land Transportation and Warehousing

Provisions Under the Industrial Storm Water Program Limits on Eligibility to Discharge (e.g.

TMDLs) “No Exposure” Certification SWPP/SWMP/SWPP&MP

Maps, drainage, outfalls, training…

Effluent Monitoring Specific to SIC Code

Inspections

Currently, DE holds permits for 362 Active Facilities 103 of these are

No Exposure Certified

The Industrial Storm Water Regulations are currently being revised.

Current MS4s in Delaware Phase I (Issued May 7, 2013)

New Castle County

DelDOT

Towns of Bellefonte, Elsmere and Newport

Cities of Delaware City, New Castle and Wilmington

Phase II (Issued ~2003) City of Newark

Town of Middletown

Kent County DelDOT

City of Dover

Provisions of the MS4 Program Intent

Authorized Discharges

6 Minimum Components

1. Public Education and Outreach

2. Public Involvement and Participation

3. Illicit Discharge, Detection and Elimination

4. Construction Site Stormwater Runoff Control

5. Post-Construction Storm Water Management

6. Pollution Prevention and Good Housekeeping

For each Minimum Component:

BMPs, goals, timelines and responsible party

Provisions of the MS4 ProgramPublic Education and Outreach/Public Involvement and Participation

Proper use of fertilizers and pesticides

Public reporting of illicit discharges

Stream clean ups

Proper maintenance of BMPs

Public review of SWPP&MP

For Example:

Provisions of the MS4 ProgramIllicit Discharge, Detection and Elimination

Ordinances

Grass Clippings

Commercial Facilities

Mapping of all outfalls

Development of a program to detect and report all illicit discharges

For Example:

Provisions of the MS4 Program

Construction Site Stormwater Runoff Control

Post-Construction Storm Water Management

Requires the review and approval of Sediment and Stormwater Plans according to standards set within the current Delaware Sediment and Stormwater Regulations

Use and maintenance of BMPs

Implement and enforce a program to address post construction stormwater runoff from new development and re-development projects

Provisions of the MS4 Program

Pollution Prevention and Good Housekeeping

A plan for all facilities owned or operated by permittee

(Public Works yards, parks, composting areas…)

A street cleaning program

A program to manage snow and ice, including salt storage and alternate deicing practices

For Example:

And there could be more….

What’s NEW in the MS4 Business?

2010 National Census changes where the permits are required

New “State of Delaware Phase II MS4 General Permit” almost ready for review!

So, now comes the 2010 Census

And Delaware has grown….

Census tracts Urban Areas vs.

Urban Clusters

How the NPDES Program Relates to other programs

Watershed Implementation Plans

TMDLs Use of Green

Infrastructure

Take Home

Reducing or reversing the impact of development is the intent of so many of our watershed programs

The NPDES permit program can be used as a comprehensive guide as to how to get there

Sandra M. Goodrow, Ph.D., C.F.M.Environmental Scientist IV

Surface Water Discharge SectionSandra.Goodrow@state.de.us

(302) 739-9946