Liberte Environmental Associates

Intended Final NPDES General Permit AKG288100
And Related Regulatory Documents (EPA 2012)
For Oil and Gas Exploration in the Chukchi Sea, Alaska

In October 2012, the U.S. Environmental Protection Agency released its intended Final NPDES General Permit AKG288100 (a.k.a AKG-28-8100) for the Chukchi Sea, Alaska. The EPA
administratively extended the previous General Permit (AKG280000) that nominally expired in June 2011.

The previous permit (2006) is intended to cover Arctic Ocean oil and gas exploration in coastal and offshore Alaska, which includes both the Chukchi and Beaufort Seas. The public comment period ended for this
intended Final permit on March 30, 2012 but the EPA has only recently (Oct 2012) listed the public comments on its webpage for the final permit. The 2012 permit is also variously labeled as AKG-28-8100. The EPA signed separate
permits for the Beaufort and Chukchi Seas on October 23, 2012 with an effective date of November 28, 2012. The expiration date of the intended final permit is November 27, 2017.

Environmental Protection Agency (EPA) Related Documents
EPA Region 10 is responsible for issuing permits for Chukchi Sea for discharges from new sources, existing sources, and new dischargers in the Offshore and Coastal Subcategories of the Oil and Gas
Extraction Point Source Category in (40 CFR Part 435, Subparts A and D). The focus of the documents in this discussion is on the Intended Final wastewater permit conditions for the Chukchi Sea, Alaska.

Intended Final 2012 EPA NPDES General Permit AKG288100 (effective November 2012). The Intended Final permit Notice of Intent (NOI) to discharge form is available below. See Table 1 at the end
of this webpage for a listing of the 13 different types of discharges allowed under Intended Final permit akg288100.

Fact Sheet (2012) for the Intended Final EPA NPDES General Permit AKG288100. Both the Chukchi Sea and Beaufort Sea permits rely upon the same fact sheet.

EPA Response to Comments (RTC, 2012) from the Public on the Draft EPA NPDES General Permit AKG288100 for the Chukchi Sea. Both the Chukchi Sea and Beaufort Sea Response to Comments are listed under the same electronic PDF file.

EPA Summary of Changes lists key differences between the previous 2006 NPDES General Permit AKG280000 and the draft 2012 NPDES General Permit AKG288100 on which the intended final permit is based.

EPA Environmental Monitoring Plan Program Requirements Summary for the intended final 2012 NPDES General Permit AKG288100.

Intended Final permit Attachment 1: Notice of Intent (NOI) (November 2012) to discharge form.

Intended Final permit Attachment 2: Cooling Water Intake Structure Requirements (November 2012).

EPA Dilution Modeling for Chukchi Sea discharges. Both the Chukchi Sea and Beaufort Sea Dilution Modeling are listed under the same electronic PDF file.

The EPA indicates that Alaska Department of Environmental Conservation (ADEC) CWA 401 Water Quality Certification
is NOT required because no oil and gas exploration is planned for Alaska Coastal Waters of the Chukchi Sea.

EPA Draft Ocean Discharge Criteria Evaluation (ODCE) for the Chukchi Sea NPDES Permit No. AKG288100 (November 2012).

EPA Biological Evaluation (BE) for the Chukchi Sea NPDES Permit No. AKG288100 (November 2012).

EPA Environmental Justice basis for the Intended Final Chukchi Sea NPDES Permit AKG288100 (November 2012).

EPA Website for the Chukchi Sea Oil and Gas Exploration General Permit No. akg288100 contains additional information.

Table 1. Intended Final Permitted Discharges
001 Drilling Fluids and Drilling Cuttings
002 Deck Drainage
003 Sanitary Wastes
004 Domestic Wastes
005 Desalination Unit Wastes
006 Blowout Preventer Fluid
007 Boiler Blowdown
008 Fire Control System Test Water
009 Non-contact Cooling Water
010 Uncontaminated Ballast Water
011 Bilge Water
012 Excess Cement Slurry
013 Mud, Cuttings, Cement at Seafloor

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