Transcript Preventing Storm Water Pollution

Arkansas Storm Water Program
Arkansas Update
On
Construction, Industrial &
Small MS4
Construction Storm Water
General Permit ARR150000
Combined general permit issued
September 30, 2003, effective November
1, 2003
• Permit covers all regulated construction sites
Permit is currently being modified
Modified permit should go draft in July
Who’s affected?
All sites ≥1 acre
• (But small sites have
fewer requirements)
Activities part of a
larger common plan
of development
Are you small, medium or large?
Small, <5 Acres
• Automatic Permit Coverage
Medium, 5-10 or 5-20 Acres
• NOI, Fee (2 weeks prior)
Large, >10 or >20 Acres
• NOI, Fee, SWPPP
Shaded area – Large site ≥10 acres
Non-shaded – Large site ≥ 20 acres
What all regulated sites must do
Develop Storm Water Pollution Prevention
(SWPP) Plan before starting
Use Best Management Practices (BMPs) to
reduce runoff
Inspect, maintain and document storm
water controls
• Every two weeks
• 24 hours after ½-inch rainfall
Post Notice on site
Keep SWPPP on site
Industrial Storm Water
General Permit ARR000000
Most recent permit was effective n
February 1, 2005
Permit covers 10 of the 11 regulated
industrial categories (Excludes
construction)
Industrial Storm Water
Permit Requirements
•
•
•
•
•
•
•
NOI, Fee
Develop & Implement SWPPP
Effluent Limits for Coal Pile Runoff
Annual Sampling for 12 Monitoring Categories
Annual DMR Submittal
Toxicity Testing for Certain Permittees
“No Exposure” Exclusions
•
Must meet 40 CFR 122.26(g)
Municipal Separate Storm
Sewer System (MS4)
Storm Water Phase I – MS4
Medium/Large MS4 = Little Rock
• Renewed ARS000002, Effective September 1,
2005
• Permit requires
• Sampling of representative outfalls
• Storm water management program that meets that meets the
6 minimum measures
• Permit requires emphasis on Education/Outreach and
Construction site control
Storm Water Phase II UAs Listing
FayettevilleSpringdale
Fort Smith
Hot Springs
Jonesboro
Little Rock
Memphis
Pine Bluff
Texarkana
Storm Water Phase II – MS4
Designation Criteria for >10,000 & 1,000
Density
• Direct Discharge to 303d
• Direct Discharge to ERW
• >50% Population Growth
Conway and Maumelle
Storm Water Phase II – MS4
Required to be Permitted/Waiver
49 Cities/Counties
• 39 Permitted
7 Universities
• 5 Permitted
4 Military Bases
• 1 Permitted
Storm Water Phase II – MS4
Waivers available based on:
Population
• <1,000 or < 10,000
Pollutant contribution
• TMDL or equivalent analysis
ADEQ evaluation and determination.
General Permit ARR040000
Permit Requirements
Implement & Develop SWMP
• SWMP must cover 6 minimum measures
Annual update reports required
• 15 months after effective date
• Every year thereafter
Reports still not submitted for 8
permittees due in 2005