EPA v. Hilcorp Alaska, LLC

Case summary

This case addresses violations documented at approximately 35 of Hilcorps 72 affected facilities in Alaska. Region 10 inspected three Hilcorp facilities in Alaska to evaluate compliance with Clean Air Act, New Source Performance Standards, Subpart OOOOa - Standards of Performance for Crude Oil and Natural Gas Facilities. Based on field inspections and records review EPA found the company failed to repair vapor leaks of volatile organic liquids (VOC) and methane within required deadlines, to re-check their repairs, to conduct an initial leak inspection for a new facility, and to report accurately on their leak detection and repair activities during the three years reviewed. This CAFO action follows an NOV issued by R10 in April 2020 for Subpart OOOOa violations.

Defendants (1)

• Hilcorp Alaska, LLCNamed in complaintNamed in settlement

Facilities (30)

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU)

  MILNE POINT 1, NORTH SLOPE BOROUGH, AK, 99734

  Registry ID: 110064404700

• …and 15 more

Statutes cited

• CAA 111 — New Source Performance Standards

Enforcement conclusions (1)

• Hilcorp Alaska, LLCentered 2022-02-28

  Primary law: CAA

  Federal penalty: $180,580

Timeline (5 milestones)

• 2021-12-29Enforcement Action Data Entered
• 2022-02-28Air Resolved
• 2022-02-28Final Order Issued
• 2022-02-28Complaint Filed/Proposed Order
• 2022-02-28Enforcement Action Closed