26-0045 DM.pdf

UNITED STATES MARINE CORPS

MARINE CORPS INSTALLATIONS EAST-MARINE CORPS BASE

PSC BOX 20005

CAMP LEJEUNE NC 28542-0005

From: Director, Environmental Management Division/G-F To: Action Proponent

Subj: DECISION MEMORANDUM, CATEGORICAL EXCLUSION; OLD

SAWMILL ROAD CULVERT REPAIR, 26M094CN, NEPA 26058

Ref: (a) DoD NEPA Implementing Procedures of 30 Jun 25

Encl: (1) Public Works Division / Ops REIR of 1 Jul 26

(2) Supporting Documents

(3) Applicable Conditions

1. In response to enclosure (1), this Decision Memorandum (DM) satisfies the referenced National Environmental Policy Act (NEPA) requirements applicable to the proposed action. Pursuant to the planning considerations for the Department of the Navy (DON) within Appendix A of the reference, this DM also documents the decision to categorically exclude (CATEX) the proposed action from the requirements of preparing an Environmental Assessment or an Environmental Impact Statement.

2. As outlined in enclosures (1) and (2), the proposed scope of the project is:

This project involves replacing the existing culvert pipe in the vicinity of Old Sawmill Road and Holcomb Boulevard on the Main Side of Camp Lejeune. The work includes replacing the existing drop inlet, as required, on the north side of the roadway with a new drop inlet designed to accommodate the replacement 18-inch reinforced concrete pipe (RCP). The project also includes replacing or repairing the damaged RCP and implementing any necessary supplemental drainage improvements to restore proper drainage and roadway trafficability.

3. Pursuant to the references, the proposed action qualifies for the following CATEX(S): "III A153-33 New construction that is similar to or compatible with existing land use (i.e., site and scale of construction are consistent with those of existing adjacent or nearby facilities) and, when completed, the use or operation of which complies with existing regulatory requirements (e.g., a building within a cantonment area with associated discharges and runoff within existing handling capacities). The test for whether this CATEX can be applied should focus on whether the proposed action generally fits within the designated land use of the proposed site.." The proposed action will not result in any extraordinary circumstances that may preclude the use of a CATEX.

4. In accordance with NEPA, this Decision Memorandum (DM) documents the proper level of environmental review for the proposed action to date but may not constitute authority to proceed with the implementation of the project. Please see the enclosures for more information. If the proposed action changes or does not begin within one calendar year after the date of this DM, please coordinate with the Environmental Planning Program Manager at (910-451-4542) to determine whether this DM continues to apply to the proposed action or whether an updated environmental impact review will be required to find that a CATEX still applies to the proposed action.

22 Jul 2026

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REQUEST FOR ENVIRONMENTAL IMPACT REVIEW

SECTION I - ACTION SPONSOR INFORMATION

Project Title: Old Sawmill Road Culvert Repair

Short Plain English Description of Action: Replace/repair the damaged reinforced concrete pipe (RCP) and supplementary drainage measures to restore trafficability.

Project ID: 26M094CN

Start By Date: 9/4/2026

End By Date: 12/31/2026

Action Sponsor (Unit/Command): Public Works Division / Ops

Action Sponsor Name: James Muston

Phone Number: 910-451-0876

Action Sponsor Name (Alternate): N/A

Phone Number: N/A

Base Location: Mainside

Project will result in permanent site improvement?: Yes

New or Modified Real Estate License Will Be Issued By Base?: None

Descriptive Information

Purpose and Need of Action: An approximate 5’ sinkhole has developed in the vicinity of Old Sawmill Road & Holcomb Boulevard. Road is closed until repaired due to safety concerns.

Scope of Project (Project Narrative): This project involves replacing the existing culvert pipe in the vicinity of Old Sawmill Road and Holcomb Boulevard on the Main Side of Camp Lejeune. The work includes replacing the existing drop inlet, as required, on the north side of the roadway with a new drop inlet designed to accommodate the replacement 18-inch reinforced concrete pipe (RCP). The project also includes replacing or repairing the damaged RCP and implementing any necessary supplemental drainage improvements to restore proper drainage and roadway trafficability.

Preferred and Alternative Sites

Preferred Site Description: Old Sawmill Road & Holcomb Boulevard.

SECTION II - PRELIMINARY ENVIRONMENTAL SURVEY

Enclosure: REIR (1)

a. AIR QUALITY

1. Will the project involve new/modification equipment associated with the following?:

N/A (Select all that apply):

Provide proposed construction dates, equipment size, specification, and estimated types.: N/A

2. Will pollution control equipment be involved (e.g. filter or incinerators)?: No

3. Was this building constructed before 1978?: N/A

4. Are there going to be any renovations, demolitions and/or building improvements?:

No

b. LAND QUALITY

1. Number of acres involved? Indicate total project area and total disturbed area.: 0.5 acres total

2. Does the proposed action involve digging and/or grading?: Yes

3. Will the action require use of earthen fill material?: Yes

4. Will the project increase impervious surfaces by 10,000 sqft or more?: No

5. Are there wetlands within the project area?: No

c. GROUNDWATER QUALITY

1. Does the project involve use of herbicides, insecticides, or pesticides?: No

2. Does the project involve installation/use of septic tanks, leach beds, or other on-site disposal of sanitary waste?: No

3. Will there be any wells dug or any excavation deeper than 20-feet?: No

4. Will the project generate or use any toxic or hazardous/waste materials?: Yes

5. Will there be an increase of solid waste (temporarily or permanently) caused by implementing the project/action?: Yes

6. Will the project or action be carried out within 100 to 500 feet of a drinking water supply well? If yes, provide distance to nearest drinking water well.: No

7. Does the project require the installation or removal of any petroleum or non-petroleum underground storage tank (UST)?: No

8. Are there any known Installation Restoration Program (Comprehensive Environmental Response, Compensation, and Liability Act - CERCLA or Resource Conservation Recovery Act - RCRA) sites or hazardous waste treatment, storage, and disposal (RCRA) facilities within the proposed project area: Yes

d. SURFACE WATER QUALITY

1. Is the project located on or in a water body or adjacent to or in the 100-year flood plain?: No

2. After construction is complete, will petroleum products including fuel, oil and lubricants (POLs) be routinely stored or used (temporarily or permanently) at the site?: No

3. Does the project require the installation of any petroleum or non-petroleum above ground storage tank (AST)?: No

e. NATURAL RESOURCES

1. Will trees be removed?: No

Amount to be removed:: N/A

2. Will grass, shrubs, or other low-growing vegetation be cut and/or removed?: No

3. Will public access for hunting, boating, fishing etc, be restricted?: No

4. Does the project involve the transfer (purchase, sale, lease, easement or otherwise) of any real estate interest?: No

5. Are there potential effects on any threatened or endangered species?: No

f. CULTURAL RESOURCES

1. Are there any known archaeological sites in the area of your project/action?: No

2. Are there any known historic buildings or districts in the project location?: No

g. UTILITIES AND SERVICES

1. Will new/modified utilities be required? Select all that apply.: N/A

If other is selected, please describe below.: N/A

h. SOCIAL ECONOMIC CONSIDERATIONS

1. Will the project cause an increase/decrease in on-base or off-base military population?: No

2. Will there be any changes to traffic flow and patterns on or off base?: No

3. Will the project cause noise or safety issues that could potentially impact off-base persons or property either during construction or from the project itself?: No

4. Will there be any increased demand on a local or state government to provide services?: No

i. GENERAL CONSIDERATIONS

1. Are alternative procedures, practices, or technologies available to minimize environmental impact or utility use?: N/A

2. Are there likely effects on the human environment that:: d. N/A

Explain YES answers here::

End of Form

Figure 1: General Location

Enclosure: Site Map (2)

Figure 2: Specific Location

Figure 3: Pipe Replacement Map

Figure 4: Site Picture

Figure 5: Wetland & Streams

Figure 6: IR Program Map

AST/UST/IR/MRP (Soil):

1. If contaminants are suspected through odors or visual observation during construction activities, immediately stop work, call 911, and contact the IR Program for further instructions.

2. Existing monitoring wells are present in this area and should be protected. If they are damaged or will need to be demolished, the wells should be properly abandoned in accordance with State regulations (NCAC 15A 2C) by a State-licensed well driller. Replacement wells will need to be installed in accordance with State regulations (NCAC 15A 2C) by a State-licensed well driller and coordinated with the IR/UST Program. If an unmarked well is discovered and inadvertently damaged, immediately contact the IR Program for further instructions.

3. This project is within administratively closed range areas. No historic ranges were present to require entry into the Munitions Response Program. No action is required, however 3R training is recommended and can be completed by viewing the videos at the following location.

https://www.denix.osd.mil/uxo/3rs-training/. Should a munitions-related item be found during construction, follow appropriate notifications as detailed in the 3R training. Any munitions related item found during project construction should additionally be reported to the IR Program within 10 days to determine if additional evaluation and precautions are necessary (Explosives Safety Submission, UXO Tech Support, etc). Additional UXO safety resources available at:

Construction - DENIX (osd.mil)

4. This project is in the Aquifer Use Control Boundary associated with IR Site 3, Operable Unit (OU) 12. All work conducted in an identified EPA NPL OU or RCRA SWMU must adhere to the provisions detailed in CFR 1910.120 Occupational Safety and Health Standards, Hazardous Materials, Hazardous waste operations and emergency response.

5. If drilling fluids or other substances/compounds/products are injected into the ground surface, Safety Data Sheets must be sent to EQB for review and screening of potential contaminants.

Contact:

IR Program, 910-451-9641/9610 AST/UST Program, 910-451-5878/9017

Stormwater Program (ECB):

1. Ensure that sediment of any size does not leave the construction site as a result of land-disturbing activities. Coordinate with the Stormwater Manager.

Contact:

Stormwater Manager, 910-450-5806 (Stormwater Requirements) Stormwater Permitting Manager, 910-451-5836 (Permit Application) Public Works Design Branch, 910-451-0775 (Civil Design)

Wetlands:

1. There are delineated, jurisdictional stream features associated with the drop inlet that this

Enclosure: Applicable Conditions (3) culvert ties into. Replacing culverts or drop inlets that hold streamflow qualifies for the US Army Corps of Engineers non-notifying Nationwide Permit 3, and only if the conditions are followed. Note regional condition 9 about culvert replacement.

https://usace.contentdm.oclc.org/utils/getfile/collection/p16021coll9/id/3209

2. If the nationwide permit conditions cannot be met, unavoidable impacts to wetlands or waters of the U.S. will require coordination and written approval from the US Army Corps of Engineers (Corps) for a Section 404 Clean Water Act Permit (Individual or applicable Nationwide Permit), the NC Division of Water Resources for a Section 401 Clean Water Act, Water Quality certification, and the NC Division of Coastal Management for a Federal Consistency Determination.

Contact:

Environmental Specialist (Wetlands), Mitch Smith 910-451-6287 mitchell.f.smith@usmc.mil

Note 1: In accordance with MCIEAST-MCB CAMLEJO 11013.4, projects that include construction, intrusive work, or real estate actions will require site approval from G-F. Please contact Asset Management Branch (AMB) at 910-451-9609.

Note 2: The following sections reviewed the REIR, replied to it and have no concerns: Range Training and Management (RTAM), Above-Ground Storage Tanks (AST), Underground Storage Tanks (UST), Explosive Safety Office (ESO), Water Quality, Air Quality, Asbestos Program, Land and Wildlife Resources Section, Cultural Resources, Threatened and Endangered Species (T&E) and Floodplains.

Enclosure: Applicable Conditions (3)