How to Fill Out and Submit ENG Form 6082: Blocks, Attachments, and Filing

ENG Form 6082 is the U.S. Army Corps of Engineers’ Nationwide Permit Pre-Construction Notification, the form you submit to a USACE district engineer before starting a project that affects waters of the United States under a nationwide permit that requires advance notice.¹ The fillable PDF is available from USACE’s publications website and from individual district offices, and the November 2024 version is current. Once the district office has a complete submission in hand, it has 45 calendar days to verify the activity, add conditions, or tell you an individual permit is needed instead.

When You Have to Submit a PCN

Not every nationwide permit (NWP) requires a pre-construction notification. Many lower-impact activities can proceed as long as you meet the permit’s terms and conditions, with no notice to anyone.² Others trigger a PCN only above a threshold, and some require one for every activity.

Threshold-based examples:

NWP 12 (Utility Line Activities): PCN required when a Section 10 permit is needed, when discharges result in the loss of more than one-tenth of an acre of waters, or for new oil or gas pipelines longer than 250 miles.
NWP 14 (Linear Transportation Projects): PCN required when the loss exceeds one-tenth of an acre or when discharges affect special aquatic sites.
NWP 18 (Minor Discharges): PCN required when more than 10 cubic yards are discharged below the plane of ordinary high water mark or high tide line, or when discharges enter special aquatic sites.

NWPs that require a PCN for all activities include NWP 7 (Outfall Structures), NWP 17 (Hydropower Projects), NWP 29 (Residential Developments), NWP 39 (Commercial and Institutional Developments), NWP 42 (Recreational Facilities), and NWP 51 (Land-Based Renewable Energy Generation Facilities).³

Two general conditions can independently require a PCN no matter which NWP you are using. General Condition 18 (Endangered Species) requires a PCN if any listed or proposed species or designated critical habitat might be affected by your project or is in the project’s vicinity.⁴ General Condition 20 (Historic Properties) requires one if the activity might affect a property listed on, eligible for, or potentially eligible for the National Register of Historic Places.⁵ Under both conditions, you cannot start work until the district engineer confirms in writing that consultation under the Endangered Species Act or the National Historic Preservation Act is complete.

Filling Out the Form Block by Block

The form instructions warn that an application not completed in full will be returned, so it pays to work through every relevant block before you submit.¹

Applicant and Agent (Blocks 5–11)

Block 5 asks for the applicant’s name and email address. If the applicant is a company or agency, list the organization along with the responsible officer and their title. Blocks 6 and 7 collect the applicant’s full mailing address and daytime phone number.

Using an agent is optional. If you hire an attorney, engineer, consultant, or contractor to handle the process, enter their name and title in Block 8, address in Block 9, and phone number in Block 10. When you use an agent, the applicant must also complete and sign Block 11, the Statement of Authorization, which formally designates that person to act on the applicant’s behalf.⁶

Project Location (Blocks 12–17)

Block 12 takes the project’s name or title. Block 13 asks for the name of the waterbody your project will directly affect. If the waterbody has no official name, describe it by its relationship to a named feature, such as “unnamed tributary to Smith Creek.” Block 14 is the project street address, if one exists. Block 15 takes precise latitude and longitude. Block 16 covers additional identifiers like the tax parcel ID, Section-Township-Range data, and the local municipality. Block 17 asks for written driving directions from a known landmark, because field staff need to physically locate the site.

Permit and Project Description (Blocks 18–22)

Block 18 is where you identify the specific NWP number or numbers you believe authorize the activity. Getting this right matters. If the district engineer decides the activity doesn’t qualify under the NWP you picked, the review shifts to whether an individual or regional general permit is needed.⁷

Block 19 is the heart of the form. Describe the proposed activity and its direct and indirect environmental effects, including the anticipated loss of waters of the United States measured in acres or linear feet.⁸ Be specific. Vague phrasing like “minor grading near stream” gives the reviewer nothing to evaluate and will likely draw a request for more information.

Block 20 covers mitigation measures you plan to take to reduce environmental harm. Block 21 describes the purpose and need for the project. Block 22 quantifies the wetlands, streams, or other waters directly affected. If your project would result in the loss of more than one-tenth of an acre of wetlands, this section must also include a statement explaining how you will satisfy the compensatory mitigation requirement or why it should not apply.⁸ The same rule applies to stream bed losses greater than 300 linear feet. A conceptual or detailed mitigation plan can be submitted as an alternative.

Signature (Block 33)

The applicant signs. The signature affirms that you hold the property rights needed to carry out the proposed activity, including any mitigation or special conditions attached to the authorization.⁶ If an agent prepared the PCN, the agent signs as well.

What You Have to Attach

The form alone is not a complete PCN. Three drawings must accompany it:

A vicinity map showing the project’s general location in relation to surrounding roads, towns, and waterbodies.
A plan view showing the footprint of the proposed activity in relation to waters and wetlands on the site.
A typical cross-section showing how the activity interacts with the ground surface, waterbody, and any fill material.

Linear projects like roads and utility lines should also include gradient drawings. Submit drawings on 8.5-by-11-inch paper or as electronic files.¹

Every PCN must also include a delineation of wetlands, other special aquatic sites, and other waters on the project site, including perennial, intermittent, and ephemeral streams. The delineation must follow the Corps’ current wetland delineation manual and the appropriate regional supplement. This is the single most common trip-up: the 45-day review clock does not start until the delineation has been submitted to or completed by the Corps.¹

Depending on the project, additional documents may be required:

If listed species or critical habitat might be affected, non-federal applicants must include the names of those species in the PCN.⁹
If the activity may affect a property on or eligible for the National Register of Historic Places, the PCN must identify it or include a vicinity map showing its location.⁹
For discharges into waters of the United States, a state water quality certification under Section 401 of the Clean Water Act, or documentation that the certification has been waived.
In coastal states, a Coastal Zone Management Act consistency concurrence or a presumption of concurrence.

Where to Send It

The PCN goes to the USACE district engineer with jurisdiction over the location of the proposed activity, not the district where you live or where your business is based.¹ USACE has 38 district offices nationwide.

Many districts now accept electronic submissions through the Regulatory Request System (RRS), an online portal for permit applications, PCNs, and other regulatory requests, at rrs.usace.army.mil.¹⁰ Some district offices also accept submissions by mail or email; check your local district’s website for its preferred method.¹¹ If you mail a paper copy, include one set of original drawings or high-quality reproductions.

What Happens After You Submit

Before the review clock starts, the district engineer has 30 days to decide whether your PCN is complete. If it is not, you will get a written request specifying what is missing, and a new 45-day period begins only after the district receives your revised, complete submission.¹² As a general rule, the district will request additional information only once, but if you don’t provide what they asked for, the review simply won’t start.

Once the PCN is complete, a 45-calendar-day review begins, counting weekends and holidays. The project manager evaluates whether your activity complies with the NWP’s terms and conditions and whether its environmental impacts are individually and cumulatively minimal.²

The review ends one of three ways:

Verification. The district engineer confirms the activity qualifies under the NWP, possibly with additional activity-specific conditions. The verification letter states how long it remains valid, generally through the NWP’s expiration date.⁷
Modification. The district engineer adds conditions to reduce impacts to a minimal level and verifies with those conditions attached.
Denial. The district engineer finds the activity would cause more than minimal impacts, cannot be sufficiently mitigated, or otherwise doesn’t comply, and directs you to apply for a regional general permit or an individual permit.²

If 45 days pass with no response, you may generally proceed under the NWP. Important exceptions apply. You cannot start work if the project triggered General Conditions 18 or 20, since those require written clearance regardless of elapsed time. You also cannot proceed if the activity requires a written waiver to exceed an NWP’s specified limits, or if you received written notice within the 45 days that an individual permit is required.¹²

Why PCNs Get Returned

Incomplete PCNs are the main source of delay, and the problems repeat. The missing wetland delineation is the biggest one; without it, the clock never starts. Vague project descriptions that don’t quantify the loss of waters in acres or linear feet draw requests for more information. So do missing drawings, omitted mitigation statements when losses exceed the thresholds, and failure to identify listed species that are present in the project area. Each of these resets the timeline. The form instructions put it plainly: an application not completed in full will be returned.¹

Check the Current NWP Conditions Before You File

In January 2026, the Corps published a Federal Register notice regarding the reissuance and modification of nationwide permits, which may update specific NWP conditions, thresholds, and PCN requirements.⁵ Before submitting, confirm with your local district office that you are working from the current permit conditions. Reissuance can change which activities require notification and what documentation must accompany the form.

1
U.S. Army Corps of Engineers. ENG Form 6082 – Nationwide Permit Pre-Construction Notification
2
eCFR. 33 CFR Part 330 – Nationwide Permit Program
3
U.S. Army Corps of Engineers. Summary Table of 2021 Final Nationwide Permits
4
U.S. Army Corps of Engineers. 2021 Nationwide Permit General Conditions
5
Federal Register. Reissuance and Modification of Nationwide Permits
6
U.S. Army Corps of Engineers. ENG Form 6082 Pre-Construction Notification
7
eCFR. 33 CFR 330.6 – Nationwide Permit Verification
8
U.S. Army Corps of Engineers. 2021 Nationwide Permits – General Condition 32
9
U.S. Army Corps of Engineers. Contents of a Complete Preconstruction Notification
10
U.S. Army Corps of Engineers. Civil Works Regulatory Program and Permits
11
U.S. Army Corps of Engineers. Obtain a Department of the Army Permit Application
12
U.S. Army Corps of Engineers. Nationwide Permits FAQ