Mississippi Administrative Code Title 11 - Mississippi Department of Environmental Quality
Title 11 – Mississippi Department of Environmental Quality (Miss. Admin. Code):
🏛️ Code Structure Overview
Title 11 is divided into nine parts, each covering major regulatory domains under the Mississippi Department of Environmental Quality (MDEQ):
Part 1 – Administrative Regulations
Part 2 – Bureau of Public Water Supply
Part 3 – Hazardous Waste Management Regulations
Part 4 – Nonhazardous Solid Waste Management Regulations
Part 5 – Underground Storage Tank Regulations
Part 6 – Wastewater Pollution Control Regulations
Part 7 – Surface Water & Groundwater Use, Well Contractors & Dam Safety
Part 8 – Geology Regulations
Part 9 – Pollution Emergency Response Regulations mdeq.ms.gov+5regulations.justia.com+5law.cornell.edu+5
🔍 Selected Highlights by Part
Part 1 – Administrative Regulations
Chapter 1: Delegation of Authority
The Mississippi Commission on Environmental Quality (MCEQ) may delegate its powers—such as issuing orders, hiring staff, and managing waste protection—to the Executive Director of MDEQ. These delegations rely on statutory authority under Miss. Code Ann. § 49‑17‑17(o) & (n)
Part 2 – Bureau of Public Water Supply
Covers standards for potable water provision, licensing of well contractors, dam safety, and groundwater management. Includes Chapter 11, which stipulates reporting requirements for nitrogen oxide and VOC emissions in nonattainment areas—statements due by July 1 annually
Part 3 & 4 – Waste Management
Focus on regulation of hazardous and nonhazardous solid waste, including disposal standards, facility permitting, and enforcement frameworks. (Less detail in initial sources.)
Part 5 – Underground Storage Tanks
Provides technical specifications and spill prevention requirements to protect soil and groundwater.
Part 6 – Wastewater Pollution Control (NPDES and UIC)
Chapter 1: National Pollutant Discharge Elimination System (NPDES), Underground Injection Control (UIC), and state permit issuance.
Chapters 2–3: Water quality criteria for inland/coastal waters and operator certification standards.
Chapters 4–7: Revolving loan fund programs for wastewater infrastructure projects and annual impaired waters listing regulations.justia.com.
Parts 7–9
Part 7: Licensing for well drilling, dam safety oversight, and groundwater allocation.
Part 8: Geological surveys and energy resource regulations.
Part 9: Emergency response procedures for pollution incidents.
📄 Example Provisions from Air Quality Regulation (Part 2, Chapter 1)
Defines “ambient air”, “de minimis NSR modification”, “major/minor stationary source”, etc.
Establishes permitting criteria, public participation, and air pollution emergency episode actions (alert, warning, emergency levels)
✅ Summary Table
Part | Chapter(s) | Focus Area |
---|---|---|
1 | 1 | Delegation to MDEQ Executive Director |
2 | 1–11 | Air emissions, emergency response, public participation in air permitting |
3–4 | – | Hazardous & solid waste management |
5 | – | Underground storage tank standards |
6 | 1–9 | Wastewater & water quality, NPDES/UIC, funding support |
7 | – | Well contractors, dam safety, groundwater |
8 | – | Geology and energy resource regulation |
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