Statement_of_Work_-_Casper_BLM_Riparian_Restoration.pdf

CASPER LOW TECH RESTORATION

STATEMENT OF WORK

BUREAU OF LAND MANAGEMENT

SHANE EVANS, HYDROLOGIST

2987 Prospector Dr , Casper WY 82604

FEBRUARY 7, 2024

Contents Section A - Statement of Work

1. Introduction

2.0 Definitions

3.0 Contractor Furnished Items

4.0 Government Furnished Items

5.0 Specific Tasks

6.0 Work Plan

7.0 Schedule

8.0 Deliverables

9.0 Reporting

10.0 Inspection and Acceptance

11.0 Payments

12.0 References

13.0 Deliveries and Performance

Section B – Price/Cost Schedule

Upper Meadow Creek Seep

Upper Meadow Creek Images

Lower Meadow Creek

Lower Meadow Creek Pictures

Tri and Still Seep

Tri/Still Seep Pictures

Over the Hill Seep

Over the Hill Seep Pictures

Overview Map

Appendix B Drawings

Brush Mattress

Zuni Bowl

One Rock Dam

Wicker Weir

Rock Layback

Section A - Statement of Work

1. Introduction

The Casper Field office is contracting for the restoration of riparian and wetlands using low tech restoration techniques. All four sites will be within the Meadow Creek watershed.

1.1 Scope

Services shall include installation of wicker weave, Zuni bowls, brush mattress and one rock dams. Construction will follow all design specifications located in the references (See section 12). No material will be gathered from the site. Locations will be flagged by BLM personnel prior to construction. Final sites will be dependent on final permit approval from Army Corps of Engineers.

1.2 PERFORMANCE TIME:

The Contractor shall begin performance within 10 calendar days after receiving the notice to proceed and complete all tasks within 60 days.

1.3 ESTIMATED START WORK DATE:

August 1, 2024

1.4 Site Tour

The site tour information will be listed in the contract opportunity.

1.5 Location and Access

Meadow Creek and Tributaries T. 32N R. 84W Sec. 15 SWSE & SENESE T. 32N R. 84W Sec. 27 NWSE, NESW & NWNE T. 32N R. 84W Sec. 28 NWNE T. 32N R. 84W Sec. 33 SENW Natrona County, WY

Table 1 Locations

Name Latitude Longitude Upper Meadow Creek 42°42’11.44”N 106°54’26.24 Tri and Still Seeps 42°42'46.24"N 106°53'3.49"W Lower Meadow Creek 42°43'2.91"N 106°52'59.25"W Over the Hill Seep 42°44'21.47"N 106°52'43.05"W

Access to the Project Area:

Directions: Take HWY 220 from Casper approximately 42 miles and turn north on to County Road 319 (Oregon Trail). Drive on the Oregon Trail road for approximately 6.5 miles and turn north onto a secondary road. Stay on this secondary road for approximately 6 miles to Upper Meadow Creek. Lower Meadow Creek and Tri/Still Seeps are approximately 1.5 miles further down the secondary road. Pool Spring, Over the Hill Seep and Sponge seep are further past Tri/Still Seep in the next drainage over.

2.0 Definitions

COR: Contracting Officers representative CO: Contracting Officer

3.0 Contractor Furnished Items

The Contractor shall:

• Provide a full Work Plan (including work schedule) as specified in Section 6.0 Schedule.

• Provide all labor and supervision necessary to implement all Task Items in this Contract.

• Provide all equipment, materials, supplies, and all incidentals necessary to implement all Task Items in the project area. Contractor-provided equipment shall include but not be limited to the following:

o Access vehicles.

o Any equipment needed for construction.

4.0 Government Furnished Items

Government will furnish required paperwork including signed NEPA document and all applicable permits.

5.0 Specific Tasks

All work will only use hand tools and all vehicles must stay on designated roads. Atv’s or UTVs may be used to shuttle material to the drainages but must stay out of the drainages and only when conditions are dry.

5.1 Upper Meadow Creek

Upper Meadow Creek Seep will use a combination of techniques to include post-line wicker weave, rock rundown and brush mattress. The post-line wicker weave will be used to weave between the hummocks to help restore the hydrologic function of the seep. The brush mattress will be used on the hillslope of the seep to protect the banks from further erosion. A rock rundown will be placed in channel below the seep to help stabilize a <1.5’ tall headcut from further erosion.

Brush Mattress will be approximately 56’ in length and 5’ wide. The mattress will use biodegradable materials and help stabilize the slope of the seep.

The wicker weave will consist of 4 segments and woven through the hummocks which will help retain sediment and moisture longer in the system. With the retention of sediment and moisture the riparian vegetation will reestablish further retaining moisture and sediment. Segments will range from approximately 60’ to 68’ and to the height of the hummocks. Materials used will be all biodegradable.

A small headcut, <1.5’ tall, will be restored using a Rock Rundown. The slope of the headcut will be laid back at a 3:1 ratio and stabilized using rock. Expected amount of fill would be 2.5 cubic yards of rock. Area is in an intermittent channel with mostly upland grasses. Some rushes and sedges are scattered throughout the area with the majority in the seep above the headcut.

The wicker weave and brush mattress will be installed within the wetland while the rock rundown will occur in the drainage.

5.2 Lower Meadow Creek

Lower Meadow Creek will use a combination of techniques to include wicker weave, Zuni bowl and one rock dam (ORD). The wicker weave will be weaved across the meadow at the height of the hummocks to help retain moisture and sediment allowing the riparian vegetation to be restored. A plunge pool is located at the bottom of the reach and a Zuni bowl in combination with a one rock dam will be installed. This will allow the site to retain its pool characteristic while stabilizing the headcut forming.

The wicker weave consists of 5 segments ranging from approximately 90’ to 120’ across the meadow. Height of the wicker weave will vary but no higher than the hummocks. With the retention of sediment and moisture the riparian vegetation will reestablish further retaining moisture and sediment. Materials used will be all biodegradable.

The Zuni Bowl will be approximately 10’ wide, 2’ high and approximately 5 cubic yards of rock fill. The ORD is expected to be 10’ wide, 2’ wide and 2’ high and approximately 1.5 cubic yards for a total of 6.5 cubic yards.

The Zuni Bowl and ORD will be installed within a wetland while the wicker weave will occur in the meadow.

5.3 Tri and Still Seeps

Tri and Still Seep will use a combination of techniques to include brush mattress and wicker weave. The brush mattress will be used along the steeper portion of the hillslope to protect the seep source from livestock trampling. The wicker weave will be woven through the hummocks across the seeps to capture sediment and retain some moisture. Materials used will be all biodegradable. The wicker weave will vary in length depending on which seep the weave will be installed. Approximately 15 – 20 wicker weaves will be installed within the seeps.

Wicker weave will be installed in the wetlands while the brush mattress will be laid at the seep source on the hillslope to prevent livestock trampling.

5.4 Over the Hill Seep

Over the Hill Seep will use a wicker weave which will be woven through the hummocks across the seep to capture sediment and retain some moisture. The wicker weave consists of 4 segments ranging from approximately 60’ to 80’ across the meadow. Height of the wicker weave will vary but no higher than the hummocks. With the retention of sediment and moisture the riparian vegetation will reestablish further retaining moisture and sediment. Materials used will be all biodegradable.

Wicker weave will be installed within the wetland.

Estimated Quantities

Table 2 Estimated Quantities

Site *Brush Mattress (Square Ft.)

*Wicker Weave (Linear Ft.)

*One Rock Dam (Cubic Yard)

*Zuni Bowl (Cubic Yard)

Upper Meadow Creek 280 ~240 2.5

Lower Meadow Creek 500 1.5 5

Tri/Still Seeps 740 1000 Over the Hill Seep 320

*All quantities are approximate. Measured using ArcGIS.

Specification: The rip-rap rock mix for restoration structures shall be angular granitic rock between 6-18 inches (in length) with the following composition:

• 70-80% between 6-12 inches

• 10% should be 12-18 inches

• A small percentage (5-10%) should consist of gravel and rock fragments

6.0 Work Plan

Offerors shall provide a Work Plan as part of application for this contract. Offeror submittals will be ranked partially on the quality and feasibility of Contractor Work Plan (see 13.2). Inspection and acceptance (Section 10.0) will be based on Contractor following of Contractor Work Plan.

Contractor Work Plan shall include, at a minimum and separately for each task:

• Labor. Number and specialties of all Contractor staff used. Resumes/work experience must be provided for all technical specialists producing deliverables for this contract.

• Equipment: All equipment anticipated shall be listed.

• Quality Control Plan, sufficient to allow Contractor and Government to gauge that work is occurring on time and according to specifications and Contractor work Plan. The Work Plan will form part of the evaluation of contractors (see factors).

7.0 Schedule

7.1 Work Schedule: At the prework conference, the Contractor shall provide a work progress plan that details the proposed Contractor work force and schedule to provide for orderly completion of the work within the contract performance time. This work schedule must be acceptable to the Government. The Work Schedule must reflect a work progress rate equal to the available amount of contract performance time.

8.0 Deliverables

Final Design Plans, Specifications, and quantity of materials (other than the Contractor work plan) shall be submitted to the COR.

Deliverables shall be provided to the COR within 7 days of work completion unless otherwise noted.

9.0 Reporting

9.1 Reporting for this task order shall be performed by the Contractor as follows:

9.1.1 Contractor shall provide Work Plan to Government prior to initiation of work. See Section 6.0. Contractor shall perform no further work until Government acceptance of Work Plan.

9.1.2 Contractor shall coordinate with COR at least one week prior to initiating field work, to ensure that adjacent landowners are notified.

10.0 Inspection and Acceptance

10.1 Inspections will be performed by BLM to assure timely implementation of the construction as they are described in the Contractor work plan.

10.2 The Contractor shall only be responsible for implementation and construction of the project.

11.0 Payments

11.1 The Contractor shall bill for items completed, inspected, and accepted at quantity and unit price on the schedule. Prior to submission of invoices into IPP, the Contractor shall first submit invoices to the Contracting Officer’s Representative for review and acceptance of services performed.

12.0 References

Low-Tech Process Based Restoration of Riverscape Design Manual, Utah State University, Riverscapes Restoration Design Manual (usu.edu) Low-Tech Process-Based Restoration of Riverscapes Pocket Guide, Appendix A Authorized Activities (RGP 8202-07). Riverscapes Restoration Design Manual (usu.edu) Range Technical Note No. 40, Hand-Built Structures for Restoring Degraded Meadows in Sagebrush Rangelands. UGS GeoData Archive System - Hand-Built Structures for Restoring Degraded Meadows in Sagebrush Rangelands: Examples and lessons learned from the Upper Gunnison River Basin, Colorado. (utah.gov) Characterization and Restoration of Slope Wetlands in New Mexico: A Guide for Understanding Slope Wetlands, Causes of Degradation and Treatment Options, October 2014. env.nm.gov/wp-content/uploads/sites/25/2018/02/Characterization_of_Slope_Wetlands.pdf

13.0 Deliveries and Performance

13.1 PERIOD OF PERFORMANCE

The Contractor shall begin performance within 10 calendar days after receiving the notice to proceed and complete all tasks within 60 days.

13.2 PROGRESS PLAN

At the prework conference, the Contractor shall provide to the COR a written "work progress plan" that details its proposed work force and schedule to provide for orderly completion of the work within the contract performance time. This work schedule must be acceptable to the Government. At a minimum, the schedule must reflect a work progress rate equal to the available amount of contract performance time.

Section B – Price/Cost Schedule Item No. Item

Description Quantity Unit of

Measure Price Per Unit

Total

Task One (1): Upper Meadow Creek 0001 Install Brush

Mattress 280 Sq. Ft

0002 Wicker Weave 240 Linear Ft 0003 One Rock Dam 2.5 Cubic Yard

Task 1 Total $ Task Two (2): Lower Meadow Creek 0004 Wicker Weave 500 Linear Ft.

0005 One Rock Dam 1.5 Cubic Yard 0006 Zuni Bowl 5 Cubic Yard

Task 2 Total $ Task Three (3): Tri/Still Seeps Meadow Creek 0007 Install Brush

Mattress 710 Sq. Ft

0008 Wicker Weave 1000 Linear Ft Task 3 Total $

Task Five (4): Over the Hill Seep 0010 Wicker Weave 320 Linear Ft.

Task 5 Total $ https://lowtechpbr.restoration.usu.edu/manual/ https://lowtechpbr.restoration.usu.edu/resources/pocket https://lowtechpbr.restoration.usu.edu/resources/pocket https://geodata.geology.utah.gov/pages/view.php?search=&k=&modal=&display=list&order_by=resourceid&offset=0&per_page=24&archive=0&sort=DESC&restypes=&recentdaylimit=&foredit=&ref=65357 https://geodata.geology.utah.gov/pages/view.php?search=&k=&modal=&display=list&order_by=resourceid&offset=0&per_page=24&archive=0&sort=DESC&restypes=&recentdaylimit=&foredit=&ref=65357 https://geodata.geology.utah.gov/pages/view.php?search=&k=&modal=&display=list&order_by=resourceid&offset=0&per_page=24&archive=0&sort=DESC&restypes=&recentdaylimit=&foredit=&ref=65357 https://www.env.nm.gov/wp-content/uploads/sites/25/2018/02/Characterization_of_Slope_Wetlands.pdf

Upper Meadow Creek Seep

Figure 1 Upper Meadow Creek Cross Section

Upper Meadow Creek Images

Looking downstream in the Seep Looking across at the seep Headcut below the seep.

Lower Meadow Creek

Figure 2 Cross Section below Scour Pool (left image) Cross Section above Scour Pool (right image)

Lower Meadow Creek Pictures

Looking downstream, hummocks in channel. Cross section view of headcut (right side of picture)

Tri and Still Seep

Tri/Still Seep Pictures

Over the Hill Seep

Over the Hill Seep Pictures

Overview Map

Appendix B Drawings Brush Mattress

Zuni Bowl

Figure 8. Zuni Bowl plan and cross-sectional views (Sponholtz and Anderson 2013; figure courtesy of C. Sponholtz).

One Rock Dam

FOTG, Section I NRCS, CO Technical Notes, Range May 2018

Figure 15. One rock dam plan, profile, and cross-sectional views (Sponholtz and Anderson 2013; figure courtesy of C.

Sponholtz). Note how ORDs are placed at the meander crossover or riffle

Figure 9. Placing a one rock dam (ORD) just downstream of the Zuni bowl creates another pool (denoted by yellow arrow).

Where there used to be one drop with the headcut, there are now three to dissipate energy. Pooled water also irrigates the banks which strengthens vegetation and reduces erosion potential. Photo by: Shawn Conner

Wicker Weir

Rock Layback