The PCN Application (ENG Form 6082): Filing, Attachments, and Submission

To fill out ENG Form 6082, you download the fillable PDF from the U.S. Army Corps of Engineers publications site, work through its blocks in order using a wetland delineation and site drawings you have already prepared, and attach that supporting documentation as appendices before submitting to your district’s regulatory office. The form is the Pre-Construction Notification (PCN) used only for activities authorized by a Nationwide Permit; individual permit applications use ENG Form 4345 instead.¹ The current set of 57 Nationwide Permits took effect on March 15, 2026, and runs through March 15, 2031.²

Confirm You Actually Need to File

Not every project under a Nationwide Permit needs a PCN. Each NWP sets its own conditions, and only some trigger notification. Three general conditions require a PCN no matter which NWP applies: any potential effect on a federally listed species or its designated critical habitat, any potential effect on historic properties listed on or eligible for the National Register, and any regional condition your division engineer has added.³⁴⁵

Individual NWPs also set quantitative limits that trigger a PCN. NWP 12 (Utility Line Activities), for example, requires notification when the utility line exceeds 500 linear feet in waters of the United States, and several development-related NWPs cap stream bed losses at 300 linear feet. Regional conditions can be much stricter — the New England District requires a PCN for tidal wetland losses over just 500 square feet.⁶ Read the specific NWP you plan to use and your district’s regional conditions before you decide.

What to Have in Hand Before You Open the PDF

ENG Form 6082 asks for technical information most applicants cannot produce off the top of their head. Assembling this material first prevents the district from returning your filing as incomplete.

Wetland and Waters Delineation

Every PCN must include a delineation of wetlands, other special aquatic sites, and other waters — lakes, ponds, and perennial, intermittent, and ephemeral streams — on the project site.⁷ Environmental consultants typically perform this using the 1987 Corps Wetlands Delineation Manual and the applicable regional supplement. The report should include a map with all delineated boundaries, data point locations, acreage calculations, and a written rationale for each boundary. Budget for it: costs commonly run several thousand dollars, and the 45-day review clock does not start until the delineation is submitted to or completed by the Corps.⁸

Site Drawings and Project Description

You need a plan-view drawing showing the project footprint relative to the delineated aquatic resources, plus cross-sections showing the depth and extent of any proposed fill. Your project description covers the nature of the work, the type and volume of material to be discharged, and total impact area in square feet or acres. Be precise. Vague descriptions are the most common reason PCNs come back for more information.

Coordinates and Location Data

Have geographic coordinates ready in decimal degrees. You will also identify the nearest waterway, the county and state, and the section, township, and range if those apply. A vicinity map showing roads and landmarks helps the reviewing engineer place your site quickly.

Working Through the Form

Download ENG Form 6082 from the USACE publications site and save the PDF locally before opening it in Adobe Acrobat; the interactive fields require you to enable all features.⁹

The first blocks capture your contact details and agent authorization if someone else is filing for you. The project location block takes the coordinates, nearest waterway, and property information. The project description block is where most applicants either succeed or fail: enter the specific NWP number you believe authorizes the activity, and make sure that number matches the type of work. Choosing the wrong NWP is a common error and forces the Corps to return the filing.

Later blocks cover the volume and type of fill material, the area of impact, and whether the site contains any aquatic resources. Attach the delineation report, all drawings, and the other supporting documentation as appendices. The form states that providing the information is technically voluntary, but that the application cannot be evaluated or issued without it.⁷

Species and Historic Property Attachments

General Condition 18 prohibits starting work until the district engineer confirms Endangered Species Act requirements are satisfied. Your PCN must name any listed species that might be affected and identify any designated critical habitat near the project.³ The U.S. Fish and Wildlife Service’s IPaC (Information for Planning and Consultation) system is the practical starting point. Define your project area, generate an official species list, and use the Determination Keys and Consultation Package Builder to evaluate effects and draft conservation measures. The output attaches directly to your PCN.¹⁰

General Condition 20 works the same way for historic properties. If the project might affect properties listed on or eligible for the National Register, identify them in the PCN or attach a vicinity map showing their locations. Contact your State Historic Preservation Officer or Tribal Historic Preservation Officer for information about registered or potentially eligible properties near the site. The district engineer uses your submission to decide whether formal Section 106 consultation is required.⁴

Mitigation Plan or Waiver Justification

If your project will cause more than one-tenth of an acre of wetland losses or more than three-hundredths of an acre of stream bed losses and requires a PCN, you must either submit a mitigation plan with the PCN or explain in writing why impacts are minimal enough that mitigation should not be required.¹¹ The minimum replacement ratio is one-for-one.

Federal regulations set a preference hierarchy for how you provide the compensation. Mitigation bank credits from a bank whose service area covers your site are preferred.¹² If no bank credits are available, approved in-lieu fee program credits come next. Permittee-responsible mitigation — on-site restoration, enhancement, or preservation you design and carry out yourself — is the option of last resort. For stream losses, the Corps prefers rehabilitation, enhancement, or preservation of the affected stream, since streams are treated as difficult-to-replace resources; plans for stream work typically include restoration or protection of adjacent riparian areas.¹¹

State 401 Water Quality Certification

Section 401 of the Clean Water Act requires a state water quality certification for any project needing a federal permit for activities that may discharge into navigable waters. If the state denies certification, the Corps cannot authorize your activity under the NWP.¹³ A district engineer’s verification will note when a project meets every NWP condition except the state certification and will deny the activity without prejudice until the state acts.¹⁴

States handle Section 401 certification through their own environmental agencies. Processes, timelines, and fees vary, and some states fold certification into a broader environmental resource permit review. Start the state process early. A delayed state certification is one of the most common reasons NWP verifications stall even after Corps review is finished.

Where and How to Submit

Find the right USACE district for your project location using the online locator at regulatory.ops.usace.army.mil/offices, which returns the district’s name, address, phone number, and website.¹⁵ Filing with the wrong district delays your project because the receiving office has to transfer the paperwork.

Most districts accept PCNs through the Regulatory Request System at rrs.usace.army.mil for electronic submission.¹⁶ Mail and email to the district regulatory office are also accepted; check your district’s website for the preferred method. If you mail the application, use certified mail or a tracked delivery service so you have a record of the receipt date, because that date starts the completeness review clock. There is no federal application fee for Nationwide Permit PCNs.

What Happens After You File

Review runs in two stages. The district engineer has 30 calendar days from receipt to determine whether your PCN is complete. If anything is missing, the district notifies you within that window and requests the additional material; the clock pauses until you provide it.⁸

Once the PCN is deemed complete, a 45-calendar-day period begins for the district engineer to decide whether the project qualifies. Two outcomes are possible. A written verification confirms the activity is authorized, sometimes with special conditions added by the district or division engineer. Or you may be notified in writing that impacts are more than minimal and an individual permit is required, using ENG Form 4345.

If 45 days pass with no written response, you may proceed under the NWP. Relying on that default is risky. A later inspection that finds the project out of compliance can trigger enforcement action, so getting the written verification in hand before starting work is the safer path.⁸ Keep the verification letter accessible at the project site during construction; inspectors may ask to see it.

After Construction: ENG Form 6285

When the permitted activity and any required mitigation are finished, sign and submit ENG Form 6285, the Certification of Compliance with Department of the Army Permit, to your district’s regulatory office. The form is short: you certify the completed work matches the permit terms and that any compensatory mitigation is complete. Photographs of the finished work help. You can submit by email or mail, and the certification closes your regulatory file. The project remains subject to compliance inspections afterward, and work that deviates from the approved plans can still lead to suspension, modification, or revocation of the permit.¹⁷

What Filing Protects You From

Starting construction without the required PCN or verification, or violating NWP terms, triggers enforcement under 33 U.S.C. 1319. Civil penalties can reach $68,445 per day of violation under current inflation-adjusted enforcement guidelines.¹⁸¹⁹ Knowing violations carry criminal fines between $5,000 and $50,000 per day and up to three years of imprisonment. The Corps can also issue cease-and-desist orders and require site restoration at your expense, which routinely costs far more than proper permitting would have. If there is any doubt whether your activity requires a PCN, filing one is cheap insurance: the form costs nothing to submit, and the worst outcome is a 45-day wait.

1
U.S. Army Corps of Engineers Publications. Engineer Forms
2
Federal Register. Reissuance and Modification of Nationwide Permits
3
U.S. Army Corps of Engineers. Nationwide Permit General Condition 18 Endangered Species
4
U.S. Army Corps of Engineers. 2021 Nationwide Permit General Conditions
5
U.S. Army Corps of Engineers. Nationwide Permits Reissuance Request for Comments
6
U.S. Army Corps of Engineers. Final New England District Regional Conditions for New Hampshire
7
U.S. Army Corps of Engineers. Nationwide Permit Pre-Construction Notification
8
U.S. Army Corps of Engineers. General Conditions 31 Pre-Construction Notification
9
U.S. Army Corps of Engineers. Instructions for U.S. Army Corps of Engineers Nationwide Permit Pre-Construction Notification
10
U.S. Fish & Wildlife Service. IPaC Information for Planning and Consultation
11
U.S. Army Corps of Engineers. Nationwide Permit 23 Compensatory Mitigation
12
eCFR. 33 CFR 332.3 – General Compensatory Mitigation Requirements
13
U.S. Environmental Protection Agency. Permit Program under CWA Section 404
14
eCFR. 33 CFR 330.6
15
U.S. Army Corps of Engineers. USACE Regulatory Boundaries
16
U.S. Army Corps of Engineers. Regulatory Request System
17
U.S. Army Corps of Engineers Publications. ENG Form 6285 Certification of Compliance
18
Office of the Law Revision Counsel. 33 USC 1319 Enforcement
19
GovInfo. Civil Monetary Penalty Adjustments