A04__Cultural_Resources_Scope_of_Work_Lake_Ilo_Dam_Seep_Repair_w_Images.pdf

U.S. FISH AND WILDLIFE SERVICE: MOUNTAIN-PRAIRIE REGION

Lake Ilo National Wildlife Refuge Dam Seep Repair Project

Cultural Resource Field Work: Scope of Work

I. Purpose

The purpose of the proposed project is to document and evaluate cultural resources (Project) within the area of potential effect (APE) for the installation of measures which will address dam seepage and spillway repair at the Lake Ilo National Wildlife Refuge (Refuge) in accordance with Section 106 of the National Historic Preservation Act (NHPA). The proposed project will conduct a files search and literature review, conduct monitoring during construction of the south and north side of the dam, provide documentation to update site forms (for the dam itself, 32DU963, and an archeological site to the south of the dam, 32DU965, as well as possibly the archeological site to the north, 32DU972, if appropriate. The project will also require obtaining an Archeological Resources Protection Act (ARPA) permit prior to conducting any on-site cultural resources activities. The two sites mentioned

(32DU963 and 32DU965) cannot be avoided by installation of the project.

The US Fish and Wildlife Service (Service) is seeking the services of a qualified cultural resource contractor (as defined by the Secretary of the Interior’s Professional Qualifications

Standards) to perform the actions listed above. Preparation of the associated site forms, monitoring reports or other documentation will be expected. The documentation will include evaluation of cultural resources for inclusion in the National Register of Historic Places (NRHP).

If the Undertaking is expected to have an adverse effect on a resource, recommendations for mitigation will be provided. The APE includes 25 acres of project area on one parcel of federal land in Dunn County, North Dakota. At least two site forms are expected to be updated for the portions of the sites within the APE.

II. Background

The Refuge was established in 1939 to serve as a breeding ground for migratory birds and provide habitat for wildlife. The refuge provides recreational opportunities for the community, as well as conserving endangered species and protecting resources. Due to health and safety concerns, water in the dam has recently been drawn down. This high hazard dam has a potential for failure. If it failed, the potential for loss of life or property is high.

Numerous known cultural resources sites are located within the Refuge and have been previously recorded under Section 106 of the NHPA. Two are located within the APE of the current project, these include the dam itself and an archeological site to the south of the dam.

Another archeological site to the north is very near the planned APE. The entire APE has been previously inventoried for cultural resources.

The Lake Ilo NWR Dam was built in 1937 to 1939 by the Civilian Conservation Corps (CCC) and Works Progress Administration (WPA). Modifications to the dam occurred in the 1950s and 1990s. According to the Service’s context document, Dedicated to a Duck, (2020) pertaining to Depression era resources in Region 6, “A major rehab project was completed in 1996. The rubble masonry spillway was replaced with a concrete spillway. An emergency spillway, outlet works and toe drain system were added. The embankment was raised and completely reshaped. Rip rap was added to the upstream face of the dam. A box culvert bridge was added downstream of the principle spillway.”

The current dam site form notes that the earthfill dam with rubble masonry spillway is eligible for the National Register of Historic Places (NRHP) under Criterion A and possibly C (as of

1993) for important associations with Depression era public works projects and possibly for engineering characteristics. Remnants of the CCC dam may have been visible in 1990 and the dam was considered to be in good condition in 2010, although heavily modified (Dedicated to a Duck document).

Previously an expansive evaluative testing program was conducted at the archeological sites

(32DU965 and 32DU972) which are eligible for the NRHP based on the presence of intact subsurface deposits and significant information potential present at the sites; However, no site form updates were completed for the sites after the evaluative testing program to update eligibility recommendations. Although the sites are very large, portions of the sites near the dam were included in the testing program.

The majority of the existing information concerning the archeological sites and dam structure within the APE will be electronically provided to the consultant at the start of the project. The consultant should plan to contact the Refuge staff (Audubon NWR staff manages Lake Ilo

NWR and is located more than 70 miles to the east) for their expertise, Refuge narratives, historical photographs or other archival resources prior to arriving on site.

II. USFWS Contacts

- Karri L Springer, ND/SD Zone Archaeologist, (701) 355-8577 (office) or (720) 556-3844 (mobile), karri_springer@fws.gov

- Todd Luke, Project Leader, Audubon National Wildlife Refuge Complex, (507) 822-0325 (mobile) or (701) 442-5474 (office), todd_luke@fws.gov

- CONTRACTING POC: Renee Babineau, Contract Specialist, (404) 679-7349, Renee_Babineau@fws.gov

III. Location (see attached map and associated GIS shape files) The one parcel, 25 acres total, is located approximately one mile west of the town of Dunn

Center, North Dakota or five miles southeast of the town of Killdeer, North Dakota. The APE dimensions and legal locations are roughly 660 feet by 1800 feet at Township 45 North, Range 94 West, 5th PM, Sec. 27, SW ¼.

IV. Description of Undertaking

This Undertaking will repair a dam seep by installing:

• A fabric blanket along the base of the dam face

• A seep collar (otherwise known as a filter collar) on the outlet structure (stilling basin) on part of the downstream dam area. Installation would include placing clay fill, sand and a piezometer.

• A chimney drain (near edge of dam construction) or a surficial patch on a prominent seep.

Either would include a pipeline to discharge water into the existing culvert at the road to the east northeast. Installation of the chimney drain would include excavation into previously disturbed soils to place gravel, sand, a slotted pipeline and clay fill to fix the existing seep.

mailto:karri_springer@fws.gov

The surficial patch would include less disturbance by area and depth, but would include placing slotted pipe, clay fill, gravel and sand.

Previous disturbances in the area are extensive. The original dam construction and dam modifications caused much disturbance to the soil matrix and landscape. The extent is visible in the aerial imagery from the 1950s and 1990s and in LiDAR imagery (see attached).

Additional disturbances include a road that runs through the project area and inundation from the reservoir. In three dimensions, almost the entire APE appears to have been previously disturbed. At the south end of the dam, the degree of disturbance is unclear.

Fill may be obtained from a commercial source or source approved by the ND SHPO office.

Staging will occur on the road and previously disturbed areas. Additional details about the history of the sites and structure are provided in attached files.

V. Schedule

Dam Site Form

Task Time Duration from Start*

Initial meeting and discussion between consultant and U.S. Fish and Wildlife cultural resource staff

(USFWS)

1 week / October 1, 2023

Consultant submits draft of dam site form to USFWS 3 months / December 1, 2023

USFWS provides comments back to consultant 3.5 months / December 15, 2023

Consultant submits revised dam form to USFWS 4 months / January 1, 2023

USFWS submits dam form to SHPO for their review 4.5 months / January 15, 2023

USFWS provides SHPO comments to consultant for final revisions of form

5.5 months / February 15, 2024

Consultant submits final form and images 6 months / March 1, 2024

Additional Site Forms and Monitoring Report

Task Time Duration from Start*

Initial meeting and discussion between consultant and U.S. Fish and Wildlife cultural resource staff

(USFWS)

1 week / June 1, 2023

Consultant submits draft of forms and monitoring report to USFWS

3 months / September 1, 2024

USFWS provides comments back to consultant 3.5 months / September 15, 2024

Consultant submits revised forms and monitoring report to USFWS

4 months / October 1, 2024

USFWS submits forms and monitoring report to SHPO for their review

4.5 months / October 15, 2024

USFWS provides SHPO comments to consultant for final revisions of forms and reports

5.5 months / November 15, 2024

Consultant submits final forms, reports and images 6 months / December 1, 2024

* Actual calendar dates will be established at the start of the project. Fieldwork is weather dependent.

VI. Deliverable Products

The proposed project will conduct a files search and literature review, conduct monitoring during construction of the south side of the dam, provide documentation to update site forms

(for the dam itself, 32DU963, and an archeological site to the south of the dam, 32DU965, as well as possibly the archeological site to the north, 32DU972. The project will also require obtaining an Archeological Resources Protection Act (ARPA) permit prior to conducting any on-site cultural resources activities.

To clarify, the potential for the project to have an effect on historic properties is low due to the previous disturbances and modifications. Cultural resources survey and subsurface investigation do not appear to be appropriate due to previous investigations and previous disturbances. For example, standard shovel probes may not be deep enough to extend below previous disturbances and project excavation utilizing heavy equipment may have the potential to reach buried paleosols with cultural materials.

The files search and literature review will be conducted with the State Historic Preservation

Office and the US Fish and Wildlife Service (Service). This review may include use of existing

Light Detection and Ranging (LiDAR) imagery to identify potential quarry pits within the proposed project area and will provide the Service and archeological contractor with updated detailed knowledge of the previous work conducted in and around the previously recorded cultural resources within the proposed project area. Monitoring will include watching the excavation as it occurs (particularly on the north and south ends of the project area), identifying and documenting cultural resources if observed, halting construction if cultural resources are found, assessing whether the soils are previously disturbed (if possible), and other actions, as needed for identification and evaluation of cultural resources under Section

106 of the National Historic Preservation Act (NHPA). Updating the site forms may include obtaining measurements, creating maps, taking photographs and reviewing background research to meet the requirements of the SHPO for site form recordation and evaluation of

Depression era dams. The ARPA permit may be obtained by contacting the Service archeologist. Personnel must meet the Secretary of the Interior’s Professional Qualification

Standards.

Updating the overall archeological site forms would be outside the scale and scope of this

SOW due to their size and complicated nature. The consultant will be requested to update archeological site forms by adding information to the site form from cultural resources activities within the project area. Comparison between the on-site installation activities and site maps is required to ensure activities within archeological sites are documented fully. If archeological site materials are found within the project area, particularly in-situ, documentation may include site boundary modifications.

The consultant will need to record the current dam structure and its features, update the site form, complete a brief history of the dam, and re-evaluate the dam structure for inclusion in the NRHP. Photographic documentation should be high quality. If drones are used for aerial photography on the Refuge, consult the NWR for permits or procedures. Select photographs should be imbedded in the forms and report as appropriate. All photographs should be provided as individual digital files labeled with a description and date. Maps should include a plan map, sketch drawings, and reproductions of existing engineering drawings. These should convey dam construction and function.

The updated dam site form should reflect changes since the previous site forms were created, including whether any elements of the original dam remain from the 1930’s and how changes may have affected the integrity and eligibility of the dam. This recordation is expected to take place prior to any project installation activities.

The contractor will submit the updated site form(s) to the Service for review prior to installation. Although unlikely, if additional cultural resources are found, the consultant will document those on SHPO site forms and provide them to the Service for review.

The monitoring report will be provided to the Service after construction. The Service will provide documentation and determinations to the SHPO and other appropriate parties for comment.

Existing information is limited. The Service facilities database, online research sources, historic maps and aerial imagery, and Refuge staff have provided some information. Additional background research is encouraged.

The Report should include:

• Introductory and administrative information

• Description of field methods

• Background historical information

• Summary information on each individual structure, site and feature: description, significance and integrity

• Images (recent and historical) as appropriate

• A map(s) indicating the sites, structure and features

• Justification of NRHP eligibility for individual sites, structures and features

• General recommendations for future work

▪ Recommendations for mitigation, should that be appropriate

• Summary and conclusions

• Bibliography of references cited

• Appendices as needed

All documentation, including reports, forms, and images, will comply with State Historic

Preservation Office (SHPO) standards in addition to any requirements noted in IX. Additional Information noted below. Deliverables may be submitted in digital format via e-mail. The contractor will be required to submit hard copies and electronic files of the report and site forms for the SHPO for archiving. If additional hard copies are required by the Service, the consultant will be notified.

VII. Access / Land Ownership

The project is on fee title federal Service lands with access via a gravel Refuge road that runs roughly north-south through the project area. Contact Todd Luke (see II. USFWS Contacts above) to schedule exact dates of the field work. He or other Refuge staff may meet you at the project area during the field work.

VIII. Personnel and Permits

Individuals working on this project need to be under the direct supervision of staff who meet or exceed the Secretary of the Interior’s Professional Qualification Standards. An individual meeting these standards must be present for all phases of the field work.

Since the project is on federally owned lands, the contractor must obtain an Archaeological

Resource Protection Act (ARPA) permit from the Service prior to the start of any field work.

Contact Karri L Springer for ARPA forms and information. A Special Use Permit (SUP) may also be required. Contact Todd Luke for SUP information.

IX. Additional Information

• All images, including those imbedded in the report and forms, need to be provided as individual files with descriptive labels.

• The attached maps, files and shape files include the entire Area of Potential Effect / the project area.

• The attached photographs and maps provide locations and examples of the structures to be recorded, terrain and ground cover.

0 1,320 2,640 3,960 5,280660 Feet

2022.ND.ILO.002 Lake Ilo NWR Dam Seep Repair Project

APE

US Fish and Wildlife Service, ND/SD Zone Archaeologist, Bismarck, ND July 2023

Township 145 North, Range 94 West, Section 27, Fifth Principal Meridian Dunn County, North Dakota

7.5' USGS Quadrangle: Lake Ilo 1:24,000

Surficial Patch

APE

Filter Blanket

Filter Collar

Outlet Works - Extension

Outlet Works

Prominent Seep

Service SpillwaySouth End - Project Area

Alternative 1 - Discharge Pipe Chimney Drain

Alternative 2 - Discharge Pipe

0 1,320 2,640 3,960 5,280660

2022.ND.ILO.002 Lake Ilo NWR Dam Seep Repair Project

APE

US Fish and Wildlife Service, ND/SD Zone Archaeologist, Bismarck, ND July 2023

Township 145 North, Range 94 West, Section 27, Fifth Principal Meridian Dunn County, North Dakota

7.5' USGS Quadrangle: Lake Ilo 1:24,000

Surficial Patch

APE

Filter Blanket

Filter Collar

Outlet Works - Extension

Outlet Works

Prominent Seep

Service SpillwaySouth End - Project Area

0 400 800 1,200 1,600200

2022.ND.ILO.002 Lake Ilo NWR Dam Seep Repair Project

APE

US Fish and Wildlife Service, ND/SD Zone Archaeologist, Bismarck, ND July 2023

Township 145 North, Range 94 West, Section 27, Fifth Principal Meridian Dunn County, North Dakota

7.5' USGS Quadrangle: Lake Ilo 1:6,000 - Enlargement

Surficial Patch

APE

Filter Blanket

Filter Collar

Outlet Works - Extension

Outlet Works

Prominent Seep

Service SpillwaySouth End - Project Area

0 400 800 1,200 1,600200

2022.ND.ILO.002 Lake Ilo NWR Dam Seep Repair Project

APE

US Fish and Wildlife Service, ND/SD Zone Archaeologist, Bismarck, ND July 2023

Township 145 North, Range 94 West, Section 27, Fifth Principal Meridian Dunn County, North Dakota

7.5' USGS Quadrangle: Lake Ilo 1:6,000 - Enlargement

Surficial Patch

APE

Filter Blanket

Filter Collar

Outlet Works - Extension

Outlet Works

Prominent Seep

Service SpillwaySouth End - Project Area

22.ND.ILO.002 Lake Ilo NWR Dam Seep Repair Project Aerial Imagery, LiDAR and Engineering Drawings

A project image showing the APE, existing structures and planned project elements as an overlay on 1996 aerial imagery from Google Earth Pro. Note the disturbance in relation to the planned actions of the current project.

A project image showing the south side of the APE on 1958 aerial imagery from https://aerial.dwr.nd.gov/. Note possible kidney-shaped bare soil areas to the south of the spillway.

A LiDAR image of the project area with archeological site boundary overlay which is an excerpt from a recent Beaver Creek Archeology report for the McKenzie Electric Line.

https://aerial.dwr.nd.gov/

USFWS staff provided additional LiDAR imagery (2nd image with 2 ft contour lines)

Engineering conceptual design maps for the current project note the current conditions and the plan of modifications (2 alternatives). Additional maps can be provided.

Four project images showing the engineering drawings from the dam rehabilitation in the 1990’s.

Additional engineering drawings can be provided.