Arkansas Storm Water Program Arkansas Update On Construction, Industrial & Small MS4

Construction Storm Water

General Permit ARR  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 ARR  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 (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 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 ARR  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