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Arkansas Storm Water Program
Arkansas Update
On
Construction, Industrial & Small MS4
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Construction Storm Water
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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
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Who’s affected?
All sites ≥1 acre• (But small sites have fewer
requirements)
Activities part of a larger common plan of development
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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
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Shaded area – Large site ≥10 acresNon-shaded – Large site ≥ 20 acres
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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
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Industrial Storm Water
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General Permit ARR000000
Most recent permit was effective n February 1, 2005
Permit covers 10 of the 11 regulated industrial categories (Excludes construction)
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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)
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Municipal Separate Storm Sewer System (MS4)
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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
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Storm Water Phase II UAs Listing
Fayetteville-Springdale
Fort SmithHot SpringsJonesboro
Little RockMemphisPine BluffTexarkana
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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
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Storm Water Phase II – MS4
Required to be Permitted/Waiver49 Cities/Counties
• 39 Permitted
7 Universities• 5 Permitted
4 Military Bases• 1 Permitted
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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.
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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