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 modifiedModified 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 acresNon-shaded – Large site ≥ 20 acres

What all regulated sites must doDevelop Storm Water Pollution Prevention

(SWPP) Plan before startingUse Best Management Practices (BMPs) to reduce

runoffInspect, maintain and document storm water controls

• Every two weeks• 24 hours after ½-inch rainfall

Post Notice on siteKeep 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

Fayetteville-Springdale

Fort SmithHot SpringsJonesboro

Little RockMemphisPine BluffTexarkana

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/Waiver49 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 RequirementsImplement & 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