SOW-_140L6222R0016.pdf

Butcher 32 SENW (CBNG) Infrastructure Removal and

Off-Channel Pit Reclamation 2022

STATEMENT OF WORK

BUFFALO FIELD OFFICE

HIGH PLAINS DISTRICT OFFICE

W yom ing - H igh P lains D istrict O ffice

O ffice N am e and S tate goes here

Butcher 32 SENW (CBNG) Infrastructure Removal and

Off-Channel Pit Reclamation

TABLE OF CONTENTS

1. CONTRACT SPECIFICATIONS

SECTION 01009, GENERAL INFORMATION AND REQUIREMENTS (4 Pages) SECTION 01060, PERMITS (4 Pages) SECTION 01330, SUBMITTAL PROCEEDURES (2 Pages) SECTION 01500, TEMPORARY FACILITIES AND CONTROLS (5 Pages) SECTION 01505, MOBILIZATION / DEMOBILIZATION (2 Pages) SECTION 02223, SITE DEMOLITION (2 Pages) SECTION 02231, CLEARING AND GRUBBING (2 Pages)

SECTION 02050, REMOVAL AND DISPOSAL OF STRUCTURES AND

OBSTRUCTIONS (3 Pages) SECTION 02300, EXCAVATION AND FILL (6 Pages) SECTION 02310, SITE GRADING (5 Pages) SECTION 02339, WATERING (1 Page) SECTION 17230, RANGELAND DRILL SEEDING (3 Pages)

GENERAL INFORMATION AND REQUIREMENTS 01009

Butcher 32 SENW (CBNG) Infrastructure Removal and Reservoir Reclamation 2022

SECTION 01009

GENERAL INFORMATION AND REQUIREMENTS

PART 1: GENERAL

1.1 SUMMARY

Description of Work: Furnishing labor, equipment, supplies, and materials to reclaim one (1) off-channel pit and remove associated production equipment from the federal lease. Work consists of unclassified excavation to re-contour the off-channel pit area to approximate natural contours; application of pure live seed and dry mulch; installation of erosion control measures throughout the reclaimed area; excavate, cut, and cap pipe of various sizes exposed to the surface; remove two metal buildings (16ft-L x 15ft-W x 10ft-H), intact. All pipe exposed to the surface will be cut and capped and buried a minimum of 3 feet below ground surface. Caps will be welded in place. All above ground infrastructure will be removed from the federal lease or ROW to the private surface owner’s storage area located T56N, R74W, Section 32 NWNW. Remove 1,800 linear feet of 4 strand wire fence around the perimeter of the Off-Channel Pit. Posts and wire will be salvaged and moved to the surface owner’s storage yard. Drain approximately 555,000 gallons of water stored within the pit. A water quality analysis has been completed indicating the water is suitable for livestock consumption. The water is to be moved to the existing reservoir located T56N, R74W, Section 32 NWNE. Salvage a minimum of 12-inches topsoil across the embankment portion of the off-channel pit. The Butcher 32 SENW Off-Channel Pit is located T56N/R74W/ Section 32 SENW and will require approximately 46,755 yards of topsoil and embankment.

Recontour the off-channel pit by moving the embankment into the pool area.

A. All disturbed surfaces shall be graded to provide positive drainage and reclaimed to closely match the existing surrounding areas. Contractor shall obtain all Federal, State, and local permits needed for this work including design and drawings needed for the permits.

Provide all supervision, personnel, labor, materials, tools, equipment, maintenance and repairs, services, and all other facilities and incidentals required for the execution and completion of the Work as specified herein. Provide all topsoil stripping and stockpiling, excavating, hauling, backfilling, grading, seeding, surface restoration, and associated work as shown on the Drawings, as specified herein, and as required to complete all components of the Work and all associated structures, complete, in place, and accepted by the Contracting Officer.

B. Location: The Work locations are shown on the drawings and exhibits; and

Work under this Contract is in Campbell County, Wyoming approximately 35 miles NW of Gillette, traveling north on Highway 14/16 to Werner (Campbell County) Road.

The work locations are shown on the attached maps and the legal locations are listed below.

Impoundment Infrastructure:

The Butcher 32 SENW Off-Channel Pit is located SE1/4 NW1/4, Sec 32, T56N, R74W, Campbell County, Wyoming.

All disturbed areas shall be reclaimed, and all support infrastructure removed.

1.2 SUBMITTALS

A. Scope: Submittals include design computations, permits, and shop drawings.

B. Requirements: Refer to specifications for submittals required. Allow at least 10 working days for review. Submittals shall be delivered to the CO.

C. Identification of Submittals: Completely identify each submittal by showing at least the following information:

1. Name and address of submitter, plus name and telephone number of the individual to contact for further information.

2. Name of project as it appears in these specifications.

3. Contract number, drawing number, and specification section number to which the submittal applies.

4. Whether this is an original submittal or resubmittal.

5. Each item shall clearly note the manufacturer's name and address, trade name, product, lot, style, color, catalog designation or model number, and locations of use.

1.3 QUALITY ASSURANCE

A. Codes and Standards: The work shall comply with codes and standards applicable to each type of work and as listed in the individual sections of these specifications. This Contract incorporates materials, applications, and tests by reference, with the same force and effect as when they were given in full text.

B. Conflict: Where a conflict occurs between reference documents and project specifications, the project specifications shall govern.

C. Measurements: Where approved shop drawings give specific measurements or rough-in dimensions for equipment, these dimensions shall take precedence over dimensions indicated on the drawings.

1.8 PROJECT/SITE CONDITIONS

A. The project can be accessed off the SA Road in Campbell County. Contractor shall stay on existing access roads. BLM will coordinate prior to granting access with the landowner’s access road.

Notify BLM a minimum of ten (10) working days before any onsite investigation or site visits to allow for BLM to inform property owners and obtain access permission if needed for access across private properties.

B. Environmental Considerations: The landowner prefers demolition and reclamation work to be completed in November when there will be no cattle in the pasture. However, transferring the water from the Butcher SESW off-channel pit to the stock reservoir located NW1/4 NE1/4, Sec 32, T56N, R74W, Campbell County, Wyoming, can occur any time.

1.9 SEQUENCING AND SCHEDULING

A. Work Schedule: The schedule shall be submitted at the pre-work conference and identify specific line-item details with milestones. When requested, submit an updated schedule within 3 calendar days. As a minimum, the estimated start and completion dates shall be shown in the estimate.

1.10 PERMITS, DESIGN AND DRAWINGS

A. Contractor shall field verify dimensions shown on the Drawings before fabricating or ordering any materials.

B. Notify the Contracting Officer of existing conditions that differ from those shown on the Drawings.

C. Portions of the contract documents are written in the imperative mode.

1. Except where specifically intended otherwise, the subject of all imperative statements is the Contractor.

2. Examples of imperative statements include but are not limited to:

3. "Provide . . . " means "Contractor shall provide . . ." and

4. "Install . . . " means "Contractor shall install . . . ".

PART 2: PRODUCTS

(There are no applicable requirements.)

PART 3: EXECUTION

3.1 PROJECT MEETINGS

A. Pre-Work Conference:

1. Will be held prior to the start of work. The Contractor will be notified in advance of meeting time, date, and place. The purpose will be to review required work, project drawings and specifications, construction schedules, payroll and payments, and administrative provisions of the Contract.

2. The Contractor, subcontractors, and the persons responsible for coordination of the work shall be present at the meeting.

3. Contractor shall be prepared to summarize and explain procedures planned for the project [and present the submittals requested in the specifications].

B. Progress Meetings:

1. To be held at the project site, or as determined by the Contracting Officer.

2. May be called by either the Contracting Officer or the Contractor. Request shall state who should attend and include an agenda.

C. Final Inspection:

1. To be held at the project site, or as determined by the Contracting Officer.

2. Notify the Contracting Officer in writing at least five (5) working days before the completion date so the Government can schedule final inspection.

3. The superintendent shall be present during this inspection.

3.2 DISPOSAL OF DEBRIS

A. Requirements: Debris shall become the property of the Contractor. Disposal of materials in a legal manner and payment of fees required is the Contractor's responsibility. Sale of material onsite is not allowed unless authorized in writing by the Contracting Officer. When hazardous materials are encountered during demolition operations, comply with applicable federal, state, and local regulations, laws, and ordinances concerning removal, handling, and protection against exposure or environmental pollution. Burning of removed materials is not permitted on the work site.

3.3 SALVAGEABLE ITEMS

Salvageable items consisting of (air relief valves) valve-sets, air-release valves, drip-valves, outfall, overflow tube, ARV/Drip cages, tire tanks, siphon tubes, and fencing shall become the property of the Government. Any above ground infrastructure will be removed from the federal lease or ROW to the private surface owner’s storage area located NW1/4 NW1/4, Sec 32, T56N, R74W, Campbell County, Wyoming.

3.4 AS-BUILT DRAWINGS (Record Information)

A. General Requirements: A complete set of full-sized prints, furnished by the Contracting Officer for this purpose only, shall be kept at the site. As the job progresses, continuously maintain as-built drawings of the work. The changes shall be noted legibly in red pencil or red ink. These drawings shall be submitted to the Contracting Officer prior to final inspection.

PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT

A. Units: The work described in this section will not be measured for payment.

4.2 BASIS OF PAYMENT

A. Payment: No direct payment for the work described under this section will be made. Consideration for this item shall be included in the bid price for other items of the Contract.

END OF SECTION

PERMITS 01060

SECTION 01060

PERMITS

PART 1 – General

1.1 WORK INCLUDED

A. This section covers Contractor requirements for providing environmental controls and permits consistent with regulatory requirements throughout the duration of the project.

B. The Contractor is responsible for obtaining all permits and licenses necessary for the completion of the work.

1.2 SUBMITTALS

A. If needed, submit the following in accordance with Section 01300 – Submittals

a. The Contractor shall be responsible to obtain and submit any other permits needed for this work.

b. The Contractor will perform all compliance testing required by all permits. Submit results of compliance testing directly to the appropriate review agency. Provide copies of all results to the Government and the Contract Officer.

1.3 REGULATORY REQUIREMENTS

A. In cases of conflict, conform with the most stringent requirement.

B. Laws, Regulations, and Permits:

a. Perform construction operations, including management of subcontractors, to comply with: Applicable Federal, State, and local laws, orders, regulations, and water quality standards concerning control and abatement of water pollution; and terms and conditions of applicable permits issued by permit issuing authority.

C. Contractor Violations:

a. If noncompliance should occur, immediately (verbally) report noncompliance to the

Contracting Officer and to the appropriate regulatory authority. Submit specific written information within two days or sooner if required by the regulatory authority.

b. Violation of applicable Federal, State, or local laws, orders, regulations, or water quality standards may result in the Contracting Officer stopping unrelated site activities until compliance is achieved.

c. The Contractor will not be entitled to an extension of time, claim for damage, or additional compensation by reason of such a work stoppage.

d. Corrective measures required to bring activities into compliance and remediate environmental impacts will be at the Contractor’s expense.

1.4 PERMITS

A. The Contractor is responsible for obtaining all permits and licenses necessary for the completion of this work. The Contractor is responsible for all permits relating to the discharge of water associated with construction activity under the WYPDES, including but not limited to the following: storm water discharge, Storm Water Pollution Prevention Plan, and construction site dewatering.

1.5 CONTRACTOR RESPONSIBILITIES

A. Permits

a. The Contractor shall be designated as the operator or holder of the permits. The Contractor shall be responsible for all associated fees.

b. Monitoring: Provide monitoring, reporting, and records as required by the permits.

B. Prepare, maintain, and proceed in conformity with all needed permits as required by Federal, State, and Local authorities. The Contractor is responsible for obtaining and paying for all permits.

C. During construction, the Contractor is responsible for all maintenance to the pollution prevention plan. When the Contractor has completed work on the project and has been issued the final payment, the Government will continue maintenance on the pollution prevention plan.

When all criteria have been met, the Government will file the Notice of Termination for the permit.

PART 2 – PRODUCTS

Not Used

PART 3 – EXECUTION

The Buffalo Field Office (BFO) proposes to reclaim areas that were disturbed by coal bed natural gas (CBNG) development including removing infrastructure, reservoirs, and reclaiming areas identified herein on Bureau of Land Management (BLM) surface and Bureau of Land Management (BLM) administered surface within the BFO area in northeastern Wyoming. The proposed actions will take place throughout the BFO area. NEPA was completed by others and is not included as part of this scope of work.

The water contained in the reservoirs is partially produced water from CBNG infrastructure and it is permissible to flow to the downstream reservoirs that remain in place. This produced water was previously analyzed and approved for livestock use in the LX Bar Water Management Plan. The remaining water is surface water. All water stays on the same property owner. There is potential for surface water in Fire Water reservoir, weather dependent.

Objective:

In addition to the construction of the identified reclamation, the contract shall include professional services to provide permits and their associated maps, plans, technical specifications, and exhibits as needed for the reclamation areas identified on maps and exhibits provided herein. These areas are located on public and private land and shall be reclaimed to match and blend into the surrounding contours. The Contractor shall obtain all necessary permits. BLM has obtained the necessary approvals from the private property owners to perform the construction work.

Additional specific reclamation requirements:

• Reference the statement of work and specifications provided.

• Remove all well production infrastructure, such as but not limited to water and gas piping and electrical conduits. It is not the intent to remove the entire horizontal infrastructure, regardless of actual depth. All existing pipes and conduits shall be considered active (or “live”) until the Contractor has taken appropriate steps based on standard oil field practices, prudent industry practices as well as all applicable laws and OSHA regulations to verify and validate they are safe to cut and cap.

• All salvageable production equipment shall be transported to a landowner approved site located off Greenough Road at 56N, 74W, Sec.19 SWSW. Lat.44.8126 Long. -105.8150 and as identified on the maps and exhibits.

• No depressions may be left where water can pond, with the following exceptions: areas adjoining the reclaimed sites that have depressions not created by the Contractor’s actions, micro-depressions created to support reclamation success, terminal storm water containments designed to silt-in overtime and other small storm water/snow storage basins. The disturbed areas shall be graded to promote positive drainage in the area and restore positive drainage in the disturbed areas.

Work Dates & Constraints:

1. Notify BLM a minimum of ten (10) working days before any onsite investigation or site visits to allow for BLM to inform property owners and obtain access permission if needed for access across private properties.

2. Provide ten working days for each, for the BLM to review 35%, 65%, and 95% design review submittals for all products.

3. Final design deliverable products for all reclamations shall be received by BLM no later than April 25, 2021.

4. Final design deliverable products for all design products shall be received by BLM no later than April 25, 2021. At a minimum the permits and design work shall follow the construction specifications herein.

Deliverables Before Field Construction:

Deliverables shall include a detailed itemized construction cost estimate, two (2) hard (11”x17” black and white) and an electronic (Cad and PDF) copy of drawings for an engineered reclamation plan completed by the consultant, sealed and signed by a Wyoming licensed professional engineer. The completed plans shall contain a design survey with a plan and profile sheets as well as existing and design cross-sections of the channel with slopes, topographic information; sediment yields computations and quantity computations as well as any information required by the permits. Consultant shall identify on the drawings and set three (3) temporary benchmarks outside the area of disturbance of each reservoir.

Project Plan including schedules, means and methods.

Plan and profile sheets shall be 11”x17”, black and white, and at a 50:1 engineering scale, readable, and consistent throughout plan and profile sheets. All documents, plans, and submittals shall be sealed and signed by a Wyoming P.E.

Pre-Work Conference:

A pre-work conference will be held virtually using Microsoft Teams prior to the start of work. The Contractor will be notified in advance of meeting time and date. The purpose will be to review the project requirements, and contractual administrative provisions. Site visits will not be conducted during this meeting but may be held in conjunction with the field work as necessary.

The Consultant shall be prepared to summarize and explain procedures for obtaining technical specifications and plans from the sites

PART 4 – MEASUREMENT AND PAYMENT

4.1 METHOD OF PAYMENT

A. Units: The Work described in this section will be paid for on a lump sum basis.

4.2 BASIS OF PAYMENT

A. Payment: Prices and payment will be full compensation for the Work described in this section.

Payment will be made under:

Pay Item Pay Unit Permit Preparation and Design Each Permit Permits Each Permit

SUBMITTAL PROCEEDURES 01330

SECTION 01330

SUBMITTAL PROCEDURES

A. Section Includes: Requirements for submittals of the work schedules, design computations, and shop drawings, details, cut sheets, etc.

B. Requirements: Refer to specifications for submittals required. Allow a minimum 10 working days for review. Review time commences upon receipt by the Contracting Officer (CO).

Submittals shall be delivered to the CO and the Contracting Officers Representative (COR).

Submittals shall be submitted using a submittal transmittal cover sheet.

1.2 QUALITY ASSURANCE

A. Approval: Written approval of the submittals is an indication the Contractor's submittals have been reviewed and there are no objections, except as noted. Installation of material based on written approval of submittals shall not relieve the Contractor of the responsibility for incorporating material which conforms to the requirements of the drawings and specifications.

Written approval of deviations shall apply only to those deviations or omissions from the requirements of the drawings and specifications brought to the Contracting Officer's attention in writing. After written approval of an item, the Contractor may submit a substitution request for approval, if the approved item cannot be purchased or delivered in time to avoid delay in completion of the project.

There are no applicable requirements.

3.1 WORK SCHEDULE:

A. Requirements: The schedule shall be submitted at the pre-work conference. When requested, the Contractor shall submit an updated schedule within three (3) working days. As a minimum, the estimated start and completion dates as well as milestones shall be shown in the schedule.

3.2 DESIGN COMPUTATIONS

A. Requirements: The Contractor shall deliver to the Contracting Officer the complete design effort, including computations, specifications, and working drawings necessary to obtain permits required by the specification sections in this Contract. When submittals have received final written approval, the Contractor shall make distribution to the parties concerned.

SUBMITTAL PROCEEDURES 01330

3.3 SHOP DRAWINGS

A. General: The Contractor shall deliver to the Contracting Officer the shop drawings required by the specification sections in this Contract to the Contracting Officer.

B. Identification: When full catalogs or pages and tables are submitted, the specific items to be used on this project shall be circled, blocked in, or underlined. Completely identify each submittal by showing the following information:

1. Name and address of preparer, plus name and telephone number of the individual to contact for further information.

2. Name of project as it appears in these specifications.

3. Contract number, drawing number and specification section number to which the submittal applies.

4. Whether this is an original submittal or resubmittal.

5. Each item shall clearly note the manufacturer's name and address, trade name, product, lot, style, color, catalog designation or model number, and locations of use.

C. Substitutions: The Contractor shall present requests for substitutions to the Contracting Officer according to the following:

1. Deliver sufficient calculations and data to justify selection of the proposed item and permit comparison with the original item.

2. Show complete layout of system, except that which is identical to Contract documents, unless unchanged portion must be shown to indicate clearances.

3. Include drawings, same (or larger) scale as Contract drawings, marked to show differences.

Include detail drawings of supports for equipment and load calculations, stamped and signed by a Wyoming Licensed Professional Engineer.

4. Submit complete technical data including test data, drawings, manufacturer's literature, samples, and complete performance specifications.

5. The Contractor is responsible for the cost of redesign and modifications to this or other parts of the project caused by the substitutions.

A. Units: The work described in this section will not be measured for payment.

4.2 BASIS OF PAYMENT

A. Payment: No direct payment for the work described under this section will be made.

Consideration for this item shall be included in the bid price for other items of the Contract.

DIVISION 1 SECTION 01505

GENERAL REQUIREMENTS MOBILIZATION / DEMOBILIZATION

Butcher 32 SENW (CBNG) Infrastructure Removal and Reservoir Reclamation 2022 01505 - 1of 1

A. This Section includes preparatory work and operations, including those necessary to the movement of personnel, equipment, materials, and incidentals to and from the project site;

and for other work and operations that must be performed, or costs incurred prior to beginning work on the various items on the project site.

B. This shall also include the project office, portable sanitary facilities, and other storage containers/trailers with jobsite tools and hand tools and small supplies necessary for the project. The location of these items shall not interfere with the traffic plan or Work.

C. Move to and remove from the project site all equipment, personnel, supplies, and incidentals which are necessary for completing the Work.

D. Provide all bonding fees, and other insurance fees not specifically called out or listed for payment that are required for the Work or for operations which must be performed.

(There are no applicable requirements in this section.)

4.1 METHOD OF MEASUREMENT:

A. Mobilization / Demobilization covers the cost of equipment, materials, and labor for mobilizing and demobilizing to the site. No measurement of individual items will be made.

4.2 BASIS OF PAYMENT:

A. Payment shall constitute full compensation for all labor, expenses, supplies, equipment, and incidentals, including bonding fees and insurance fees, required to complete the Work.

B. Final payment for all Work (including the lump sum amount shown on the bid form for mobilization and demobilization) can be withheld subject to the Contracting Officer’s approval of finished site conditions.

C. Payment will be made upon final completion of the project.

D. Payment: Full compensation for mobilization and demobilization, including preparation of staging/storage area, and cleanup shall be on a lump sum basis.

Pay Item Pay Unit

Mobilization / Demobilization Lump Sum

DIVISION 2 SECTION 02050

SITEWORK REMOVAL AND DISPOSAL OF STRUCTURES AND OBSTRUCTIONS

REMOVAL AND DISPOSAL OF STRUCTURES AND OBSTRUCTIONS 02050

02050 - 1

SECTION 02050

REMOVAL AND DISPOSAL OF STRUCTURES AND OBSTRUCTIONS

PART 1 GENERAL

A. The work involved in this category consists of removing and satisfactorily disposing of pipes, water storage tanks, fencing, rip rap, and other items designated for removal on the plans and/or directed by the Contracting Officer Representative (COR).

B. Removed items shall be property disposed of as required by Federal, State, and Local Government regulations. The COR shall receive written notification of disposal procedures and may require the Contractor to certify that proper disposal methods were used.

C. It shall also include the salvaging of designated material, as shown on the plans, specifications, exhibits, and as listed herein, including backfilling the resulting trenches, holes, and pits. In addition, it shall include all transportation as identified herein.

D. Materials removed and not designated to be salvaged or incorporated into the work shall become the property of the Contractor.

1.2 RELATED WORK SPECIFIED ELSEWHERE

A. Section 02310, Site Grading

PART 2: PRODUCTS (NOT USED)

PART 3: EXECUTION

A. Demolition and Disposal

1. All existing pipes, water storage tanks, fencing, rip rap, and other items designated for removal on the plans and/or directed by the Contracting Officer Representative (COR), shall be removed and disposed of by the Contractor unless otherwise specified.

2. Remove standpipes three feet (3’) below finished grade elevation. Fill pipes with native soil and compact. Saw cut and cap any intersecting pipes within three feet (3’) of the finished ground surface.

3. Rip rap may be salvaged and reused to construct rock check dikes.

4. Care shall be exercised in such removal to assure that adjacent facilities or structures which are to remain shall not be disturbed.

5. Any damage to such existing facilities or structures resulting from carelessness or negligence on the Contractor’s part shall be satisfactorily restored to its original condition at the Contractor’s expense.

B. Site Specific Criteria All outfalls that are to be removed need to have all fencing, weirs, and liners removed. All rock shall be utilized on location for water bars construction. All salvageable production equipment shall be hauled to a landowner approved site located off Greenough Road 56N, 74W, Sec.19 SWSW. Lat.44.8126 Long. -105.8150

02050 - 2

In addition to the descriptions below, reference the photographs and exhibits

1. Bottom 26/Water Gap Reservoir Spillway) None

2. Lower 26 Reservoir (2.32 acres disturbed)

• 1 siphon box with siphon tube.

• One outfall = approximately 10 feet x 40 feet with minimal small rock, actively running water.

• Fences consisting of steel post and hog panel.

• One valve set adjacent to outfall.

• One weir.

3. Middle 26 Reservoir (2.86 acres disturbed)

• 1 water valve with siphon tube.

• 160 feet x 12-inch diameter of white plastic pipe draining into the draw with a tee connecting to 393 feet of 12-inch diameter black poly into the same tubing system from the Upper 26 reservoir.

• Note: that siphon tube is separate from the tee that appears to also be connected into the reservoir.

• Over Head Power (OHP) bisects the dam laterally from the SE corner to the NW corner

• One outfall = approximately 18 feet x 34 feet with minimal small rock.

• Fences consist of steel post and hog panel.

• Two valve sets adjacent to outfall.

• One weir.

• Five 18-inch diameter corrugated metal pipe (approximately 100 feet long)

• One tire tank.

4. Upper 26 Reservoir (2.42 acres disturbed)

• 1 siphon box with siphon tube.

• Black poly from the siphon tube connects the tee manifold in the Middle 26 Reservoir.

• Small traditional spillway on the south side of the dam and less than 2 feet in depth and terminates at the isofill.

• Note: 2-3 ft of water in reservoir present below the siphon tube.

• Remove outfall

5. Firewater Reservoir (2.21 acres disturbed)

• 1 siphon box/with siphon tube.

• Small traditional spillway on the south side of the dam and less than 2 ft in depth and terminates at the isofill.

• Note: Remove salt cedar(tamarack) that is growing around the reservoir, also cocklebur present and will need to be removed.

02050 - 3

A. No separate measurement or payment will be made for removal and disposal of structures and obstructions. This work is subsidiary to Site Grading.

B. Units: The work described in this section will be measured and paid for by the unit completed (Each). The unit completed shall be per each site listed below as a Lump Sum.

A. Payment: Prices and payment will be full compensation for the work described in this section.

Payment will be made under:

Pay Item Pay Unit Removal of Obstructions (Bottom 26/Water Gap Reservoir Spillway (0.74 acres disturbed)) Lump Sum

Removal of Obstructions (Lower 26 Reservoir (2.32 acres disturbed)) Lump Sum

Removal of Obstructions (Middle 26 Reservoir (2.86 acres disturbed)) Lump Sum

Removal of Obstructions Upper 26 Reservoir (2.42 acres disturbed) Lump Sum

Removal of Obstructions Firewater Reservoir (2.21 acres disturbed) Lump Sum

SITE DEMOLITION 0223

02223 - 1

SECTION 02223

SITE DEMOLITION

1.1 SUMMARY

A. Section Includes: The removal and disposal of drainage structures, dikes, tanks, other obstructions, salvage of items, and backfilling and grading back to original contours to match and blend the existing surrounding areas.

B. Related Sections:

1.2 SUBMITTALS

A. General: Submittals shall be according to Section 01009 - General Information and Requirements. Section 01330 - Submittal Procedures.

B. Schedule: Submit three (3) copies of a schedule indicating proposed methods and sequence of operations for demolition work prior to commencement of work. Include details for dust, noise, erosion, and sediment.

1.3 PROJECT/SITE CONDITIONS

A. Work Limits and Control Points: Shall be staked by the Contractor and approved by the Contracting Officer. After the areas are staked by the Contractor the Contracting Officer will approve the disturbance and work limits

B. Environmental Considerations:

1. Watering for dust control shall be at Contractor's expense.

2. Erosion and Sediment Control Plan: Shall be per Section 01060 Permits.

PART 3: EXECUTION

3.1 PREPARATION:

A. Landscape Preservation: Protect vegetation that is outside the work limits from injury.

C. Protection: Protect existing facilities or utilities outside the work limits from damage.

Damage shall be repaired or replaced at the Contractor's expense. Repair work shall not begin until authorized in writing by the Contracting Officer. protect the site according to the Erosion Control Plan with permanent and temporary erosion and sediment control measures.

3.2 DEMOLITION

A. General: Raze, remove, and dispose of drainage structures, tanks, and other obstructions shown on the drawings.

B. Removal of Drainage Structures: Store salvaged material at locations designated by the Contracting Officer. Remove substructures of existing structures to the natural stream bottom. Remove parts outside of the stream 1 foot (300 mm) below natural ground surface.

3.3 SALVAGE

SITE DEMOLITION 0223

02223 - 2

A. Requirements: Shall be according to Section 01009 - General Information and Requirements.

3.4 DISPOSAL OF DEBRIS

A. Requirements: Items or debris not designated as salvage for the Government shall become the property of the Contractor. Remove and dispose of such materials off government-controlled lands according to Section 01009 - General Information and Requirements.

3.5 BACKFILLING

A. General: Fill cavities and holes caused as a result of demolition with existing materials.

B. Backfill Placement: Backfill materials shall be spread over the full width of the cross section of the cavity to a maximum loose thickness of 6-inches (150 mm) and shall be compacted as specified below before the next layer is spread. The surface of each lift shall be in a “rough condition” to prevent a slip plane between the two layers (each lift shall be “keyed” to the next lift. The in-place materials shall be free of lenses, pockets, streaks, or layers of materials differing substantially in texture or gradation from the surrounding materials.

C. Frozen Material: Embankment shall not be placed when either the material or the surface on which it is to be placed is frozen.

3.6 FIELD QUALITY CONTROL

A. Moisture Content: During placing and compacting of backfill, the optimum moisture content (± 2 percent) as determined by AASHTO T 217 or AASHTO T 239, unless otherwise approved in writing by the Contracting Officer, shall be maintained by wetting or drying, as required.

C. Compaction: The backfill shall be compacted to a minimum density of 90 percent of the maximum dry density as determined by AASHTO T 99, Method C. Topsoil shall not be compacted.

3.7 CLEANUP

A. Site Grading: Rough grade areas affected by demolition maintaining grades and contours of site.

A. Units: The work described in this section will not be measured for payment.

4.2 BASIS OF PAYMENT

EXCAVATION AND FILL 2300

SECTION 02300

EXCAVATION AND FILL

PART 1 - GENERAL

1.01 WORK INCLUDED

Material requirements for Excavation and Fill supplied from offsite and excavation and backfill placement requirements for materials supplied from offsite and onsite for the contract.

1.02 DEFINITIONS

A. Use definitions from ASTM D653.

B. Borrow: Material from required site excavations or from designated borrow areas.

C. Coverage: One “coverage” is the result of successive passes by a piece of compaction equipment, which by means of sufficient overlap, ensures all areas has been subjected to one pass of the compaction equipment.

D. Dam Embankment: All portions of the dam embankment including previously placed material, Compacted Backfill, Riprap/Rock Fill, and Gravel Fill.

E. Fines: Material passing the No. 200 sieve size (ASTM D1140) F. Optimum Water Content: The water content that will result from the estimated maximum dry unit weight of soil when subjected to the ASTM D698 compaction test.

G. Percent Compaction: The ratio expressed as a percentage of the in place dry density to the estimated maximum dry density, in accordance with ASTM D698, at the location of the in-place density test.

H. Proof Rolling: Rolling a soil surface with a minimum of 4 passes with compaction equipment for the purpose of detecting loose or soft areas.

I. Suitable Material: Material imported or from required excavations that meets the specification requirements for a designated fill.

J. Topsoil: Native surface soil capable of supporting native plant growth.

K. Unsuitable Materials: Materials that contain waste, debris, roots, organic matter, frozen matter, stone or rock with any dimension greater than 3-inches, or any other materials determined by the CO that does not meet the requirements for any embankment zone or required fill.

L. Well Graded: A mixture of particle sizes that has no specific concentration, or lack thereof, of one or more sizes. A material that, when compacted, produces a strong, relatively incompressible soil mass with a minimum of voids.

1.03 SUBMITTALS

A. Foundation treatment and protection plan:

a. Describe means and method for foundation protection and maintaining natural water content at all times the foundation is exposed.

b. Describe equipment proposed for cleaning, protecting, and treating the foundation.

B. Excavation and Fill Plan

a. Describe equipment, sequencing, and methods for excavation and shoring (if necessary).

b. Include materials distribution chart.

c. Describe equipment proposed for soil processing, placement, compaction, and water

(moisture) control.

d. Provide a proposed work schedule.

e. Describe proposed methods for protecting work. Include:

i. Temporary dewatering, drainage, irrigation

ii. Water conditioning

iii. Frost-protection measures C. Dike Excavation Plan

a. Describe equipment, sequencing, and methods for excavation and shoring (if necessary).

b. Include materials distribution chart.

c. Describe equipment proposed for soil processing, placement, compaction, and water

(moisture) control.

d. Provide a proposed work schedule.

e. Describe proposed methods for protecting work. Include:

i. Temporary dewatering, drainage, irrigation

ii. Water conditioning

iii. Frost-protection measures

PART 2 – PRODUCTS

2.01 COMPACTED BACKFILL

A. Reasonable well-graded non-organic soils with a maximum size of 2 inches and at least 20% passing the No. 200 sieve from onsite material.

B. Soils with visible organic materials or salt crystals shall not be used as fill.

2.02 FILL FOR CONTOURING

A. Reasonably well-graded non-organic soils with a maximum size of 2 inches and at least 20% passing the No. 200 sieve from onsite material.

B. Soils with visible organic materials or salt crystals shall not be used as fill.

2.03 PREPARATION/SPREADING/CONDITIONING/PROCESSING/COMPACTING EQUIPMENT

A. General: Maintain equipment in good working condition at all times, and according to manufacturers’ specifications.

B. Foundation Preparation/Cleaning Equipment:

a. Hand Tools: Including but not limited to shovels, bars, picks, wedges, brooms, and light power tools.

b. Earth Moving Equipment: Graders and dozers capable of “benching” into natural materials on sloping surfaces steeper than 3:1 (horizontal to vertical) and into the existing embankment to remove loose and dry material and to provide adequate bonding with new embankment material.

C. Scarifying Equipment: Provide graders and dozers equipped with scarifying teeth and rippers capable of roughening horizontal surfaces and loosening of dry materials to a depth of 6 inches for the addition of water and conditioning necessary to provide a good bond with the first layer of fill.

D. Spreading Equipment: Provide graders, dozers, and other equipment to assist in spreading, aerating, and water conditioning of soil foundations and fill materials, as required.

E. Watering Equipment: Provide water trucks, water wagons, sprinklers, prayers, misters, or other approved equipment with a distributor bar or approved device to ensure uniform water application.

F. Discing Equipment: Provide discs to break up, mix, aerate, and assist in water-conditioning ill in both stockpiles and on the embankment fill, in place: and to assist in preparing soil-foundation surfaces, equipped with:

a. Depth adjustments and cut-angle adjustments that can be operated without dismounting vehicle.

b. At least two gangs hooked together in tandem in a total cutting width no less than 10 feet: and with serrated blades at least 24-inch in diameter, spaced no more than 16 inches apart.

c. Self-cleaning scrapers to prevent the accumulation of material on and between discs.

G. Compacted Backfill: Provide:

a. Self-propelled sheepsfoot or tamping foot compactors equipped with:

i. Staggered, uniformly spaced tamping feet with an individual end area not greater than 32 square inches, and tamping-feet length maintained not less than 6-inches.

ii. Maximum drum width: 84 inches

iii. Two-drum or four-drum units separated by cab shall have its static weight equally distributed to all compaction drums

iv. Static weight (on the drum) not less than 2,000 lb/ft of drum width.

PART 3 – EXECUTION

3.01 EXAMINATION

A. Verify Conditions

a. Prior to placing material in any section of the embankment, verify the foundation for that portion has been cleared, stripped and water conditioned.

b. Scarify soil foundation areas so the surface will bond and compact with the first layer of fill. Scarify by ripping and discing material 3 to 6 inches in depth so no smooth surfaces remain.

c. Condition the foundation surface and previous lift surfaces to uniform water content prior to placing fill. Pay particular attention to edges of fill against sloping ground and against abutment surfaces.

d. Do not place organic materials.

e. Do not allow water to accumulate on fill surfaces.

f. Do not place frozen materials, or place fill on frozen ground.

g. Do not place fill below water.

3.02 EXCAVATION

A. Classification: No classification as to class, nature, or condition will be made of any soil or rock from required excavations.

B. Excavate: Excavate according to Contractors plans and the permits.

C. Strip the embankment area and all areas to receive fill to a minimum depth of 6 inches and as required to remove all organic soils, vegetative matter, roots, and other perishable, loose, or objectionable material that might interfere with compaction of lifts or the bonding of embankment to foundation. Objectionable material shall become debris. Topsoil at the project site is limited. Perform stripping operations in a manner to conserve all topsoil that contains organics.

D. Transport stripped materials to stockpile areas outside of waterways and wetlands, subject to approval. Locate piles so as not to affect the operation of the reservoirs, spillways, or outlet works, interfere with the work, or detract from the appearance of the completed work.

E. Reuse, as much as is practicable, all suitable materials from required excavation in the permanent construction. Separate unsuitable materials and remove them from the work area as soon as practicable.

F. Excavated materials shall be stockpiled and water conditioned in temporary stockpiles prior to being placed as fill.

G. Water-condition materials that are too dry for immediate compaction. Use water, discs, blades and other equipment to water condition materials directly in temporary stockpiles prior to their being transported to fill areas. Water conditioning is incidental to the work.

H. Spread out and allow materials to dry that are too wet for immediate compaction until the water content is reduced sufficiently for placement in the embankment. Aerating and drying is incidental to the work.

I. Level and trim waste piles to reasonably regular lines, and slope to drain. Finished slopes shall be no more than 3H:1V.

J. Remove soft, wet, dry, objectionable, or otherwise unsuitable materials from the dikes.

3.03 PREPARATION

A. Soil Foundation/Fill-Surface Preparation

a. Foundation preparation and water conditioning is critical. Maintain all exposed foundation surfaces in a moist condition (not saturated) at all times. Maintain the water content of the foundation soils near optimum for compaction and for bonding to the first lift of fill. Do not allow water to accumulate in ponds or puddles. Scarify or otherwise roughen all exposed temporary cut slopes to facilitate infiltration of water.

b. Check for soft areas by proof-rolling all foundation surfaces with a minimum of four passes by rubber-tired equipment weighing a minimum of 10,000 pounds per tire.

c. Excavate overly dry, overly wet, soft-yielding, or otherwise unsuitable subgrade as determined by the CO, and replace with appropriate, compacted, embankment fill for the location.

d. Scarify fill slopes and foundation surfaces equal to or flatter than 2.5H:1V (horizontal to vertical) so the surface will bond and compact with the first layer of fill. Scarify by ripping and discing material 3 to 6 inches in depth so no smooth surfaces remain.

Moisture condition as necessary to meet requirements of adjacent fill.

e. Bench each lift into natural materials and into the existing embankment on sloping surfaces steeper than 2.5H:1V to remove loose and dry material and to provide adequate bonding with the new embankment material. Benches shall be 3 feet horizontal.

f. Water all slopes to at least 5 feet above and ahead of benching operations.

g. Condition the foundation surface and previous lift surfaces to a uniform water content prior to placing fill. Pay particular attention to edges of fill against sloping ground and against abutment surfaces.

h. Moisten and disc or aerate the compacted surface of any foundation or fill layer that is respectively too dry or too wet for bonding prior to placement of a subsequent layer.

i. Grade areas to receive fill prior to fill placement.

j. Dewater foundations to prevent the accumulation against or the intermingling of water with the fill.

k. Maintain in a moistened condition all earth surfaces against which earth fill, filter drain, or concrete is to be placed.

B. Rock Foundation Preparation

a. Where rock in encountered in the foundation, remove all debris, loose rock, sand, silt, and unsuitable materials by hand tools.

b. Clean soil and bedrock foundation surfaces within downstream embankment footprint to a “blade-clean” condition. Use small dozers or graders without crabbing to minimize disturbance to geologic features.

c. Use only rubber-tired equipment or crane with bucket. Track-mounted equipment should not be operated on prepared rock surfaces.

d. Use picks, bars, and had tools to obtain a prepared rock surface free from loose, drummy, or shattered material.

3.04 PLACEMENT

A. General: Place fill materials to the lines and grades needed to reclaim the sites back to original contours as well as blend and match to existing grades, subject to:

a. The performance of excavation and placement operations such that backfill materials are mixed and blended to provide the most homogeneous section within each zone and best degree of compaction and stability practical. Provide primary water conditioning, mixing and blending in stockpiles. Distribute the fill in any given zone and lift such that it is free from lenses, pockets, streaks or layers differing materially in texture or gradation from the surrounding fill. Spread and compact embankment fill on an axis parallel to the dam centerline to the maximum extent practicable.

b. The proper preparation and water conditioning of foundation surfaces, lift surfaces, abutment surfaces and excavation surfaces. Maintain lift surfaces in a moist and roughened condition. Restrict use of rubber-tire and smooth drum equipment on Compacted Backfill surfaces to prevent formation of smooth lift surfaces. Disc smooth surfaces to ensure proper bonding between lifts to avoid formation of “slip planes”.

B. Compacted Backfill

a. Distribute water uniformly throughout each lift of material prior to and during compaction.

b. Water-condition Compacted Backfill material in stockpiles to a water content between optimum and 2% above optimum for compaction before transporting to the embankment. Add supplemental water to the fill material prior to compaction by uniform sprinkling followed by uniform mixing by discs and graders.

c. Spread materials in uniform layers not to exceed 8 inches in loose thickness and compact by rolling with approved sheepsfoot or tamping foot rollers. Spread and compact in directions parallel to the dam’s axis.

d. Place at a water content between 2% below and 3% above optimum for compaction (ASTM D698). Compact to not less than 97% of the laboratory maximum dry density (ASTM D698) when constructing structures such as dams, levees, and roads. Otherwise, 90% is acceptable for areas such as pipe removals, dam reclamation, valve removals, etc., unless significant settlement is expected.

PART 4 – MEASUREMENT AND PAYMENT

4.01 METHOD OF MEASUREMENT

A. Units: The work described in this section will be measured and paid for by the cubic yard.

Measurement shall be neat line in place before disturbance. Topsoil shall be measured per acre disturbed at 6-inches deep and subtracted from the neat line volume.

4.02 BASIS OF PAYMENT

A. Payment: Prices and payment will be full compensation for the work described in this section. Payment will be made under:

Pay Item Pay Unit

Excavation and Backfill (Butcher 32 SESW Off-Channel Pit Embankment (6.0 acres disturbed)) Cubic Yard

DIVISION 2 SECTION 02310

SITEWORK SITE GRADING

02310 - 1

SECTION 02310

SITE GRADING

PART 1 GENERAL

A. Section Includes: Stripping and storage of topsoil, excavating, filling, grading, scarification, and other related work to reclaim the site.

B. Remove topsoil from all areas that will be disturbed during construction and place this topsoil in stockpiles.

1. Areas from which topsoil may be removed generally include but may not be limited to:

a. Embankments,

b. Areas used for borrow material,

c. Full extents of cut and fill areas,

d. Spoil and topsoil stockpile locations or waste areas,

e. Temporary staging areas,

f. Temporary access roads

g. Any other locations as shown on the Drawings and/or as directed by the Contracting Officer.

2. Remove topsoil from each area to be disturbed at the start of the Work in each of those areas.

C. Replace topsoil in all disturbed areas or as directed by the Contracting Officer. Topsoil will be placed on top of the constructed and approved finished ground surface as defined in the Drawings, exhibits, and as identified in the specifications.

1. Areas in which topsoil must be replaced include but are not limited to:

a. The full extent of cut/fill construction limits, staging areas, waste excavation berms, and any other disturbed areas where topsoil was removed during construction.

1.2 DEFINITIONS

A.…