Engineering Plan Review (Letter of non-objection)

According to 18 AAC 72.600, engineering plans should be submitted to DEC for review and approval. To obtain a "letter of non-objection" an applicant must submit a copy the Permanent Storm Water Management Control Plan Review Checklist with all documents listed on the General Project Information page. See the Frequently Asked Questions for answers to the commonly asked questions.

The kind of treatment controls that do need a letter of Non-Objection include:

  • Dry Extended Detention Pond
  • Constructed Wetlands
  • Wet Ponds
  • Sand Filters
  • Oil/Grit Separators
  • Rotational Flow Separators
  • Other similar treatment controls

The kinds of projects that typically do not need a letter of Non-Objection (unless they use one of the treatment controls listed above) include:

  • Utility Lines (water, sewer, gas, phone, etc.)
  • Road maintenance (to maintain the original line and grade of ditches and running surfaces.)
  • Bike and Pedestrian Trails
  • Golf Courses
  • Boardwalks
  • Weigh Stations
  • Sewage Lagoons


William Ashton, Storm Water and Wetlands Engineer
Division of Water – Alaska Department of Environmental Conservation
555 Cordova Street
Anchorage, AK 99501
Telephone: 907-269-6283
Fax Number: 907-269-3487
Email Address: