ATTACH_1_-_PLANS_AND_SPECIFICATIONS.pdf

0202993-010 26 July 2023

Contents

DIVISION 01 00 00 - GENERAL REQUIREMENTS

SECTION 01 10 00 - SUMMARY

SECTION 01 20 00 - PRICE AND PAYMENT PROCEDURES

SECTION 01 32 00 - CONSTRUCTION OBSERVATION AND REPORTING

SECTION 01 33 00 - SUBMITTAL PROCEDURES

SECTION 01 35 29 - SITE SAFETY

SECTION 01 57 13 - TEMPORARY EROSION AND SEDIMENT CONTROL

SECTION 01 71 13 - MOBILIZATION

SECTION 01 74 00 - SITE RESTORATION

SECTION 01 74 23 - DEMOBILIZATION AND SITE ABANDONMENT

SECTION 01 89 13 - SITE PREPARATION

03 00 00 - CONCRETE

SECTION 03 30 00 - CAST-IN-PLACE CONCRETE

07 21 00 - THERMAL INSULATION

SECTION 07 21 19 - FOAMED-IN-PLACE INSULATION

DIVISION 31 11 00 - CLEARING AND GRUBBING

SECTION 31 11 01 - CLEARING AND GRUBBING

SECTION 31 11 02 - ROCK SLOPE SCALING

DIVISION 31 20 00 - EARTHWORK

SECTION 31 20 06 - EARTHMOVING

DIVISION 31 33 00 - ROCK STABALIZATION

SECTION 31 33 26 - ROCK SLOPE MESH

DIVISION 32 31 00 - FENCES AND GATES

Contents | ii

SECTION 32 31 13 - WIRE FENCES AND GATES

Contents | iii

26 July 2023

ENCLOSURES

Plan C-1 - Regional Map, List of Plans, Symbols, and Notes

Plan C-2 - Area Map

Plan C-3 - Electric Mine Site and Vicinity Access Map

Plan C-4 - Melmont Mine Site and Vicinity Access Map

Plan C-5 - Feature CARB-05 Existing Conditions Plan

Plan C-6 - Feature CARB-05 Existing Conditions Sections

Plan C-7 - Feature CARB-05 Remediation Plan

Plan C-8 - Feature CARB-05 Remediation Section

Plan C-9 - Feature CARB-06 Existing Conditions Plan and Section

Plan C-10 - Feature CARB-06 Remediation Plan and Section

Plan C-11 - Feature MM-01 Existing Conditions Plan and Section

Plan C-12 - Feature MM-01 Remediation Plan and Section

Plan C-13 - Monument Detail – CARB-05

July 26, 2023

01 10 00-1 0202993-010

DIVISION 01 00 00 - GENERAL REQUIREMENTS

SECTION 01 10 00 - SUMMARY

PART 1 - GENERAL

The purpose of this project is to abate hazards posed by three abandoned coal mine features located in

Pierce County, south of the town of Carbonado, Washington. The features are designated as:

◼ CARB-05. In March 2023, the feature consisted of a large funnel shaped opening about 21 feet wide, at the base of a slope adjacent to the Carbon River. The opening continued into a main slope that was partially blocked with a large boulder.

◼ CARB-06. In March 2023, the feature consisted of an elliptical subsidence about 10 feet long, 5 feet wide, and 5.5 feet at its deepest point. The subsidence is possibly connected to a vertical opening but the entry is blocked at the surface by vegetation and debris.

◼ MM-01. In March 2023, the feature consisted of an elliptical subsidence approximately 18 feet long and

16 feet wide. On the northeast side of the subsidence was an approximately 4-foot-wide circular opening connected to open workings that continued at a downward dip between about 30 and

35 degrees.

Maps showing the feature locations are included on Plans C-1 though C-4. Work will consist of reclaiming the mine features, as summarized in Section 1.2 and as specified herein and shown on Plans C-5 through

C-13. When the term “site” is used herein, it collectively refers to the CARB-05, CARB-06, and MM-01 work sites, access routes, and overall project area.

Important: The extent, depth, and stability of historic mine workings in the project vicinity are unknown.

The area surrounding the features may contain unstable mine workings that may be prone to sudden collapse, leading to surface subsidence or collapse that could pose a risk to construction equipment and personnel. The Contractor is responsible for all site safety and should choose construction equipment and methods accordingly.

1.1 Mine Feature Description and Location

Feature CARB-05

Description: In March 2023, Feature CARB-05 consisted of a large funnel shaped opening about 21 feet wide near the base of a slope adjacent to the Carbon River. The opening continued into what appeared to be a main slope with a dip of about 40 degrees to the northeast. There is a large boulder partially blocking the main slope about 21 feet down from the entry. There is an approximately 7-foot-long rock overhang above the entry that contains loose cobbles/boulders ensnarled in tree roots.

Feature CARB-06

Description: In March 2023, Feature CARB-06 consisted of an elliptical subsidence on a steep sloping hillside that measured approximately 10 feet long, 5 feet wide, and 5.5 feet at its deepest point. The

01 10 00-2 0202993-010 headwall of the feature was composed of a vertical rock face and a berm of mounded soil about 1.5 feet high was present immediately downslope of the subsidence. The subsidence was funnel shaped with the deepest section near the northeast side of the vertical rock face. The floor of the subsidence was covered in vegetation and debris including branches and fallen leaves. The subsidence may be open to vertical workings below the debris. The feature was not apparent when approaching from the upslope trail. Local residents have reported that the opening was “venting dangerous gas”. Haley & Aldrich, Inc. (Haley & Aldrich) did not observe evidence of gases based on physical observations (e.g., odor) or photoionization detector (PID) readings.

Location/Property Owner and Access to Features CARB-05 and CARB-06: To access the CARB features, park at the public parking lot at the corner of Pershing Avenue and Washington State Route 165 (WA 165) in the town of Carbonado, Washington, and walk south along the trail at the south end of the lot. The trail parallels WA 165 for about 0.4 miles before turning WSW. Keep following the flat trail, staying to the left at the first fork for about another 0.2 miles. There will be another small fork in the trail.

From this point, to access Feature CARB-06, take the left fork and continue on the narrow trail that parallels the slope. Continue slowly descending on this trail walking southeast for about 175 feet. At this point, leave the trail and begin walking SE downhill. In about 25 feet, see a pair of 8-inch-diameter cedar trees separated by about 2 feet. Feature CARB-06 is immediately downhill of these trees and partially covered by debris. The feature is potentially an open vertical shaft that is nearly invisible from above. Stay at least 5 feet to the right or left of the trees while traveling downhill to avoid accidentally walking/falling into the feature.

To access Feature CARB-05, walk back uphill to the trail at the top of the slope. Continue slowly descending on this trail walking southeast for about 375 feet. At this point, you will reach a large gully. Cross the gully aiming for an 8-foot-diameter cedar tree on the opposite side. From the tree, descend towards the river staying to the southeast (right) of the stream that passes through the gully. After walking about 100 feet downhill, you will see a large overhanging rock ledge on the other side of the stream. Cross the stream and walk towards the overhang. The feature is located below the overhanging rock ledge northwest of the stream and about 115 feet uphill from the river.

The general access route from Carbonado to the features is shown on Plans C-1, C-2, and C-3. There is motorized vehicle access to within approximately 1,500 feet of Feature CARB-05 and 700 feet of Feature

CARB-06.

Feature MM-01

Description: In March 2023, Feature MM-01 consisted of an approximately 18-foot-long by 16-foot-wide elliptical subsidence with an approximately 4-foot-diameter circular opening in the northeast end of subsidence. The feature is located upslope of the Melmont Ghost Town Hiking Trail. The opening extends downward at an approximate dip to the north of 30 to 35 degrees and was open for at least 25 feet from the base of the general subsidence. Visual observations indicate the opening extended further than 25 feet. This feature exhibited signs of active failure with exposed bare rock and ferns hanging off the steep northeast headwall of the feature.

Location/Property Owner and Access to Feature MM-01: From the public parking lot at the corner of Pershing Avenue and WA 165 in the town of Carbonado, Washington, drive 3 miles south along WA 165 and cross the Fairfax bridge. Park in the small lot on the east side of the road (west of the river). Walk back across the bridge and cross over the guardrail onto a steep trail that moves downhill along the bridge

01 10 00-3 0202993-010 trestles (east side of the river). At the base of the decent trail, turn left (south) on the flat walking trail that parallels the river. Walk about 0.2 miles to a small stream crossing. At this point, leave the trail and begin walking uphill NNE staying to the north of the stream. Continue in this direction for about 185 feet to Feature MM-01.

1.2 Mine Feature Reclamation Methods

Feature CARB-05

The reclamation for Feature CARB-05, as presented in the specifications and shown on Plans C-7 and C-8, generally consists of the following tasks:

◼ Remove the tree from the overhanging rock ledge. Scale loose cobbles, boulders, and other materials from the root ball. Scale loose material from the overhang, roof of the opening, and the root ball to at least the anticipated bulkhead location, as needed for site safety.

◼ Install a polyurethane foam plug in the open workings using a contractor-designed temporary bulkhead.

◼ Place an OSMRE monument and hazard sign.

◼ Install a concrete veneer over the polyurethane foam plug.

◼ Install a fence barricade across the opening.

Feature CARB-06

The reclamation for Feature CARB-06, as presented in the specifications and shown on Plan C-10, generally consists of the following tasks:

◼ Remove debris from inside the subsidence and excavate loose soil from around the edge of the subsidence.

◼ Install a polyurethane foam plug in the open workings using a contractor-designed temporary bulkhead.

◼ Place an OSMRE monument.

◼ Install a concrete veneer over the polyurethane foam plug.

◼ Place excavated soil on top the concrete veneer and blend into the natural adjacent slope.

Feature MM-01

The reclamation for Feature MM-01, as presented in the specifications and shown on Plan C-12, generally consists of the following tasks:

◼ Scale cobbles and other loose debris from near vertical headwall above the opening.

◼ Remove loose debris from the mouth of the opening.

◼ Install a polyurethane foam plug in the open workings using a contractor-designed temporary bulkhead.

01 10 00-4 0202993-010

◼ Place an OSMRE monument.

◼ Install a concrete veneer over the polyurethane foam plug.

◼ Place excavated soil on top the concrete veneer.

1.3 Special Conditions

Work shall be accomplished in accordance with these specifications and the plans.

Contractor shall verify all levels, dimensions, and existing conditions in the field before proceeding.

Contractor shall notify OSMRE of any discrepancies or field changes before installation or fabrication. In case of discrepancies between the existing conditions and the Contract Drawings, the Contractor shall obtain direction from the OSMRE Contracting Officer’s Representative (COR) before proceeding. Any change resulting in additional cost would require authorization from the OSMRE contracting officer. The

Contractor shall notify the OSMRE COR immediately of conflicts or excessive variations from indicated dimensions. Noted dimensions take precedence over scaled dimensions. DO NOT SCALE DRAWINGS.

The Contractor shall locate utilities prior to work.

The Contractor shall immediately take action to contain and clean up, at their own expense, all petroleum products or other hazardous substance releases that are on or near the project and that are caused by the

Contractor’s employees, directly or indirectly. The Contractor shall notify the appropriate agencies, including OSMRE, of such releases.

The Contractor shall provide adequate erosion and sediment control, slope protection, rock fall protection, shoring, and bracing, as required to complete the work. Temporary erosion and sediment control, slope protection, shoring, and bracing shall not be removed until all related specified work has been completed.

The Contractor shall be responsible for all safety precautions and the methods, techniques, sequences, or procedures required to perform the work.

The Contractor shall be responsible for and hold all applicable Washington-required licenses, permits, etc., to perform the work as specified. At a minimum, the Contractor shall contact Pierce County (County) or the Pierce County Parks to ensure all appropriate permits are obtained. All work shall be accomplished in accordance with all applicable local, state, and federal regulations.

1.4 Site Location and Use by Others

The project features are located within a few hundred feet of unmaintained hiking trails. The mine features and the construction site may be attractive to pedestrians and other recreationists that may see the work from the trail. The Contractor shall be solely responsible for protecting work areas, underground workings accessible through the work areas, and material storage and staging areas from trespass for the duration of the contract. The Contractor shall provide all safety measures necessary to complete the work.

01 10 00-5 0202993-010

1.5 Site Access

Site access for the project is addressed in Section 01 10 00 (1.1) and is shown on the plans. No tree removal or other clearing shall be accomplished without OSMRE’s approval. The limits of any tree removal and clearing at the site shall be discussed at the site prior to the start of construction. Any subsequent clearing shall be limited to only that necessary for construction and must be approved by OSMRE.

The Contractor shall access the site, as shown on the plans. Contractor shall generally restore any disturbed areas at the end of construction to their pre-construction conditions.

1.6 Qualifications

The Contractor’s job Superintendent, crew performing the work, and hired subcontractors, shall be competent in working around abandoned mine workings, excavating soil, placing concrete, polyurethane foam, and other fill materials, installing fencing, scaling rock and debris, and tree removal, as applicable to the work they are performing.

The Contractor’s equipment shall be capable of completing the required work, as specified and shown on the plans.

1.7 Submittals

The Contractor shall submit personnel data, a list of equipment, and Contractor qualifications and experience on similar projects, as specified in Section 01 33 00.

The Contractor shall submit a construction schedule, as specified in Section 01 10 00. Table 01 10 00-1 presents a typical construction schedule format.

PART 2 - PRODUCTS

Not used.

PART 3 - EXECUTION

3.1 Pre-Construction Meeting

The Contractor shall hold a pre-construction meeting with OSMRE, Haley & Aldrich, and Pierce County

Parks to discuss the Contractor’s schedule, submittals, and coordination during construction. The pre-construction meeting will occur on site to allow observation of the mine features, access to the project site, and a discussion of the work.

The Contractor’s designated Superintendent (who shall be on site and responsible for all work) shall be present at the pre-construction meeting, along with any person(s) who may be in charge of the

Contractor’s work in the absence of the Superintendent. The Contractor staging area will be identified at the pre-construction meeting.

01 10 00-6 0202993-010

3.2 Construction Schedule

The Contractor shall submit a project schedule showing the start date and estimated duration of construction for major activities at the feature. The project schedule shall show all work that will be performed concurrently.

The Contractor’s schedule will be used by OSMRE to determine when the COR and Haley & Aldrich Field

Representative will be on site to observe and measure the work to verify compliance with the plans and specifications, and to document payment quantities. The Contractor shall be solely responsible for coordinating with OSMRE on any schedule changes. OSMRE shall not be liable for any extra cost when work is delayed because the OSMRE Field Representative is not on site if the Contractor has not given at least two working days’ notice of schedule changes.

Contractor shall not be penalized in the event that work is delayed because of weather, but no increase in cost shall be approved for such delays.

The Contractor shall use the construction schedule format presented in Table 01 10 00-1 and shall include at least the work items listed therein.

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Table 01 10 00-1 – Construction Schedule Format

Feature Item Date

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14

CARB-05 Mobilize Equipment and Materials

Remove Tree

Scale Rock Ledge

Install Contractor-Designed Bulkhead

Install Polyurethane Foam Plug

Install OSMRE Monument and Hazard Sign

Place Concrete Veneer

Install Fence Barricade

Demobilize Equipment and Crew

CARB-06 Mobilize Equipment and Materials

Remove Debris and Excavate Loose Soil

Install Contractor-Designed Bulkhead

Install Polyurethane Foam Plug

Install OSMRE Monument

Place Concrete Veneer

Demobilize Equipment and Crew

MM-01 Mobilize Equipment and Materials

Remove Debris and Excavate Loose Soil

Install Contractor-Designed Bulkhead

Install Polyurethane Foam Plug

Install OSMRE Monument

Place Concrete Veneer

Demobilize Equipment and Crew

END OF SECTION 01 10 00

01 20 00-1 0202993-010

SECTION 01 20 00 - PRICE AND PAYMENT PROCEDURES

PART 1 - GENERAL

1.1 Description

The following sections outline payable items for this project. Each item will be measured as specified. The

Contractor shall bid on each of the other items listed on the Bid Schedule. The quantities listed in these specifications are estimates; actual quantities required shall be determined in the field and may vary from the estimates. The Contractor shall be responsible for verification of these quantities (to OSMRE’s satisfaction) and documentation of actual quantities used for unit price items.

All other work required to complete the contract, including, but not limited to: tree and plant protection, groundwater and surface water control, prevention of trespass, protection of materials, work in progress, safety, and installation and maintenance of erosion and sediment controls shall be considered incidental to work shown on the Bid Schedule, and no separate payment shall be made for such incidental work.

All applicable taxes shall be included in the bid prices.

1.2 Payable Work Items

Feature CARB-05

(010) Mobilization, Site Preparation, and Site Access – Feature CARB-05

Payment for “Mobilization, Site Preparation, and Site Access – Feature CARB-05” shall be at the contract lump sum price, which shall include full compensation for providing all labor, materials, and equipment necessary to prepare for the work and for providing all labor, materials, and equipment to establish, improve, and maintain the access routes to accomplish the work. This shall include preparation of submittals; furnishing bonds (if any) and insurance; acquiring all federal, state, city, and any other local permits; attending the pre-construction meeting; preparing the staging area; purchasing or renting equipment required for safety; transporting equipment and materials to the site; all mobilization costs; and other necessary work.

(020) Tree Removal and Scaling – Feature CARB-05

Payment for “Tree Removal and Scaling – Feature CARB-05” shall be at the contract lump sum price, which shall include full compensation for all materials, equipment, and labor necessary to remove the tree from the overhanging ledge and scale loose materials from the root ball zone and roof/overhang of the opening, as specified.

01 20 00-2 0202993-010

(030) Fence Barricade – Feature CARB-05

Payment for “Fence Barricade – Feature CARB-05” shall be at the contract unit price per linear foot, which shall include full compensation for providing all labor, materials, equipment, and delivery necessary for installing the fence barricade, as shown on the plans.

(040) Polyurethane Foam (PUF) – Feature CARB-05

Payment for “Polyurethane Foam (PUF) – Feature CARB-05” shall be at the contract unit price per bag set used for the entire project. A bag set is a two-part bag containing approximately

2.6 gallons of liquid PUF components (i.e., 1.3 gallons per component).

The unit price shall include all labor, materials, delivery, and equipment necessary to furnish and place the PUF, as specified and shown on the plans. The Contractor shall be paid for the number of bag sets used on site per the unit price and as counted by the OSMRE Field Representative. The quantity of PUF required is the best estimate of OSMRE and is based on limited information. The actual quantity of PUF to be placed shall be determined in the field.

No payment shall be made for unopened bag sets. Once a bag set is opened, its entire contents must be used before another bag set may be opened. The OSMRE COR must authorize the opening of all bag sets; no payment will be made for bag sets opened without prior authorization from OSMRE. If PUF is wasted for any reason, or if PUF is placed inappropriately, or does not meet specifications, payment to the Contractor will be adjusted as deemed appropriate by OSMRE.

Mobilization and demobilization costs associated with “Polyurethane Foam (PUF) Placement –

Feature CARB-05” shall be included in bid item No. 010, “Mobilization, Site Preparation, and Site

Access – Feature CARB-05”, and bid item No. 070, “Demobilization and Site Restoration –

Feature CARB-05.”

(050) Steel Mesh Reinforced Concrete Veneer – Feature CARB-05

Payment for “Steel Mesh Reinforced Concrete Veneer – Feature CARB-05” shall be at the contract unit price per cubic yard of concrete and shall include full compensation for all materials, equipment, and labor necessary to furnish and place the steel mesh and concrete, as specified and shown on the plans. Limits of the concrete placement shall be as indicated on the plans, or as determined by OSMRE in the field at the time of construction. Only the volume of concrete placed within the limits determined by OSMRE will be paid for; no payment shall be made for concrete placed beyond these limits.

The volume of concrete needed is based on the estimate of OSMRE; the volume actually required may vary from the estimate. Mobilization and demobilization costs associated with “Steel Mesh

Reinforced Concrete Veneer – Feature CARB-05” shall be included in bid item No. 010, “Mobilization, Site Preparation, and Site Access – Feature CARB-05”, and bid item No. 070, “Demobilization and Site Restoration – Feature CARB-05.”

01 20 00-3 0202993-010

For concrete mixed on site, volume measurements shall be based on the recorded number of cement/redi-mix sacks and quantity of water per sack mixed and placed on site, as counted by the

OSMRE COR.

OSMRE shall be liable for the cost of any unused structural concrete as long as:

◼ OSMRE approves the amount of concrete the Contractor proposes to mix on site prior to mixing and placing; and

◼ Failure to place the concrete is solely the result of site conditions, such as the required volume of concrete.

Payment shall not be made for concrete lost to failure or leakage of the Contractor’s mixing equipment or placing equipment, or failure of the Contractor to place an adequate amount of PUF fill.

The Contractor shall be solely liable for the cost of all concrete that is not placed within the time specified in Section 03 30 00 for reasons such as failure or poor performance of the Contractor’s equipment, insufficient crew size, or poor direction by the Contractor’s superintendent.

Note that OSMRE, at its sole discretion, may elect to change the amount of concrete placed from the estimate, depending on conditions encountered as the work proceeds.

(060) Monument and Hazard Sign Placement – Feature CARB-05

Payment for “Monument Placement – Feature CARB-05” shall be at the lump-sum price, which shall include full compensation for all materials, equipment, and labor necessary for installation of the monument at Feature CARB-05, as specified and shown on the plans.

(070) Demobilization and Site Restoration – Feature CARB-05

Payment for “Demobilization and Site Restoration – Feature CARB-05” shall be at the contract lump sum price, which shall include full compensation for all materials, equipment, and labor necessary to remove equipment and abandon the site, as approved by OSMRE.

Feature CARB-06

(080) Mobilization, Site Preparation, and Site Access – Feature CARB-06

Payment for “Mobilization, Site Preparation, and Site Access – Feature CARB-06” shall be at the contract lump sum price, which shall include full compensation for providing all labor, materials, and equipment necessary to prepare for the work and for providing all labor, materials, and equipment to establish, improve, and maintain the access routes to accomplish the work. This shall include preparation of submittals; furnishing bonds (if any) and insurance; acquiring all federal, state, city, and any other local permits; attending the pre-construction meeting; preparing

01 20 00-4 0202993-010 the staging area; purchasing or renting equipment required for safety; transporting equipment and materials to the site; all mobilization costs; and other necessary work.

(090) Excavation and Grading – Feature CARB-06

Payment for “Excavation and Grading – Feature CARB-06” shall be at the contract lump sum price, which shall include full compensation for all materials, equipment, and labor necessary to remove debris and loose soil from Feature CARB-06 and place excavated soil on top of the concrete veneer.

(100) Polyurethane Foam (PUF) – Feature CARB-06

Payment for “Polyurethane Foam (PUF) – Feature CARB-06” shall be at the contract unit price per bag set used for the entire project. A bag set is a two-part bag containing approximately

2.6 gallons of liquid PUF components (i.e., 1.3 gallons per component).

The unit price shall include all labor, materials, delivery, and equipment necessary to furnish and place the PUF, as specified and shown on the plans. The Contractor shall be paid for the number of bag sets used on site per the unit price and as counted by the OSMRE Field Representative. The quantity of PUF required is the best estimate of OSMRE and is based on limited information. The actual quantity of PUF to be placed shall be determined in the field.

No payment shall be made for unopened bag sets. Once a bag set is opened, its entire contents must be used before another bag set may be opened. The OSMRE COR must authorize the opening of all bag sets; no payment will be made for bag sets opened without prior authorization from OSMRE. If PUF is wasted for any reason, or if PUF is placed inappropriately, or does not meet specifications, payment to the Contractor will be adjusted as deemed appropriate by OSMRE.

Mobilization and demobilization costs associated with “Polyurethane Foam (PUF) Placement –

Feature CARB-06” shall be included in bid item No. 080, “Mobilization, Site Preparation, and Site

Access – Feature CARB-06”, and bid item No. 130, “Demobilization and Site Restoration –

Feature CARB-06.”

(110) Steel Mesh Reinforced Concrete Veneer – Feature CARB-06

Payment for “Reinforced Concrete Veneer – Feature CARB-06” shall be at the contract unit price per cubic yard of concrete and shall include full compensation for all materials, equipment, and labor necessary to furnish and place the steel mesh and concrete, as specified and shown on the plans. Limits of the concrete placement shall be as indicated on the plans, or as determined by

OSMRE in the field at the time of construction. Only the volume of concrete placed within the limits determined by OSMRE will be paid for; no payment shall be made for concrete placed beyond these limits.

The volume of concrete needed is based on the estimate of OSMRE; the volume actually required may vary from the estimate. Mobilization and demobilization costs associated with “Steel Mesh

01 20 00-5 0202993-010

Reinforced Concrete Veneer – Feature CARB-06” shall be included in bid item No. 080, “Mobilization, Site Preparation, and Site Access – Feature CARB-06”, and bid item No. 130, “Demobilization and Site Restoration – Feature CARB-06.”

For concrete mixed on site, volume measurements shall be based on the recorded number of cement/redi-mix sacks and quantity of water per sack mixed and placed on site, as counted by the

OSMRE COR.

OSMRE shall be liable for the cost of any unused structural concrete as long as:

◼ OSMRE approves the amount of concrete the Contractor proposes to mix onsite prior to mixing and placing; and

◼ Failure to place the concrete is solely the result of site conditions, such as the required volume of concrete.

Payment shall not be made for concrete lost to failure of the Contractor’s mixing equipment or placing equipment, or failure of the Contractor to place an adequate amount of PUF fill.

The Contractor shall be solely liable for the cost of all concrete that is not placed within the time specified in Section 03 30 00 for reasons such as failure or poor performance of the Contractor’s equipment, insufficient crew size, or poor direction by the Contractor’s superintendent.

Note that OSMRE, at its sole discretion, may elect to change the amount of concrete placed from the estimate, depending on conditions encountered as the work proceeds.

(120) Monument Placement – Feature CARB-06

Payment for “Monument Placement – Feature CARB-06” shall be at the lump-sum price, which shall include full compensation for all materials, equipment, and labor necessary for installation of the monument at Feature CARB-06, as specified and shown on the plans.

(130) Demobilization and Site Restoration – Feature CARB-06

Payment for “Demobilization and Site Restoration – Feature CARB-06” shall be at the contract lump sum price, which shall include full compensation for all materials, equipment, and labor necessary to remove equipment and abandon the site, as approved by OSMRE.

Feature MM-01

(140) Mobilization, Site Preparation, and Site Access – Feature MM-01

Payment for “Mobilization, Site Preparation, and Site Access – Feature MM-01” shall be at the contract lump sum price, which shall include full compensation for providing all labor, materials, and equipment necessary to prepare for the work and for providing all labor, materials, and equipment to establish, improve, and maintain the access routes to accomplish the work. This

01 20 00-6 0202993-010 shall include preparation of submittals; furnishing bonds (if any) and insurance; acquiring all federal, state, city, and any other local permits; attending the pre-construction meeting; preparing the staging area; purchasing or renting equipment required for safety; transporting equipment and materials to the site; all mobilization costs; and other necessary work.

(150) Excavation and Grading – Feature MM-01

Payment for “Excavation and Grading – Feature MM-01” shall be at the contract lump sum price, which shall include full compensation for all materials, equipment, and labor necessary to remove debris and loose soil from Feature MM-01 and place excavated soil on top of the concrete veneer.

(160) Polyurethane Foam (PUF) – Feature MM-01

Payment for “Polyurethane Foam (PUF) – Feature MM-01” shall be at the contract unit price per bag set used for the entire project. A bag set is a two-part bag containing approximately

2.6 gallons of liquid PUF components (i.e., 1.3 gallons per component).

The unit price shall include all labor, materials, delivery, and equipment necessary to furnish and place the PUF, as specified and shown on the plans. The Contractor shall be paid for the number of bag sets used on site per the unit price and as counted by the OSMRE Field Representative. The quantity of PUF required is the best estimate of OSMRE and is based on limited information. The actual quantity of PUF to be placed shall be determined in the field.

No payment shall be made for unopened bag sets. Once a bag set is opened, its entire contents must be used before another bag set may be opened. The OSMRE COR must authorize the opening of all bag sets; no payment will be made for bag sets opened without prior authorization from OSMRE. If PUF is wasted for any reason, or if PUF is placed inappropriately, or does not meet specifications, payment to the Contractor will be adjusted as deemed appropriate by OSMRE.

Mobilization and demobilization costs associated with “Polyurethane Foam (PUF) Placement –

Feature MM-01” shall be included in bid item No. 140, “Mobilization, Site Preparation, and Site

Access – Feature MM-01”, and bid item No. 190, “Demobilization and Site Restoration –

Feature MM-01.”

(170) Steel Mesh Reinforced Concrete Veneer – Feature MM-01

Payment for “Steel Mesh Reinforced Concrete Veneer – Feature MM-01” shall be at the contract unit price per cubic yard of concrete and shall include full compensation for all materials, equipment, and labor necessary to furnish and place the steel mesh and concrete, as specified and shown on the plans. Limits of the concrete placement shall be as indicated on the plans, or as determined by OSMRE in the field at the time of construction. Only the volume of concrete placed within the limits determined by OSMRE will be paid for; no payment shall be made for concrete placed beyond these limits.

01 20 00-7 0202993-010

The volume of concrete needed is based on the estimate of OSMRE; the volume actually required may vary from the estimate. Mobilization and demobilization costs associated with “Steel Mesh

Reinforced Concrete Veneer – Feature MM-01” shall be included in bid item No. 140, “Mobilization, Site Preparation, and Site Access – Feature MM-01”, and bid item No. 190, “Demobilization and Site Restoration – Feature MM-01.”

For concrete mixed on site, volume measurements shall be based on the recorded number of cement/redi-mix sacks and quantity of water per sack mixed and placed on site, as counted by the

OSMRE COR.

OSMRE shall be liable for the cost of any unused structural concrete as long as:

◼ OSMRE approves the amount of concrete the Contractor proposes to mix on site prior to mixing and placing; and

◼ Failure to place the concrete is solely the result of site conditions, such as the required volume of concrete.

Payment shall not be made for concrete lost to failure of the Contractor’s mixing equipment or placing equipment, or failure of the Contractor to place an adequate amount of PUF fill.

The Contractor shall be solely liable for the cost of all concrete that is not placed within the time specified in Section 03 30 00 for reasons such as failure or poor performance of the Contractor’s equipment, insufficient crew size, or poor direction by the Contractor’s superintendent.

Note that OSMRE, at its sole discretion, may elect to change the amount of concrete placed from the estimate, depending on conditions encountered as the work proceeds.

(180) Monument Placement – Feature MM-01

Payment for “Monument Placement– Feature MM-01” shall be at the lump-sum price, which shall include full compensation for all materials, equipment, and labor necessary for installation of the monument at Feature MM-01, as specified and shown on the plans.

(190) Demobilization and Site Restoration – Feature MM-01

Payment for “Demobilization and Site Restoration – Feature MM-01” shall be at the contract lump sum price, which shall include full compensation for all materials, equipment, and labor necessary to remove equipment and abandon the site, as approved by OSMRE.

PART 2 - PRODUCTS

Not used.

01 20 00-8 0202993-010

PART 3 - EXECUTION

END OF SECTION 01 20 00

01 32 00-1 0202993-010

SECTION 01 32 00 - CONSTRUCTION OBSERVATION AND

REPORTING

PART 1 - GENERAL

1.1 Haley & Aldrich Field Representative's Responsibilities

A. A Haley & Aldrich Field Representative will be at the project site as appropriate to monitor construction activities and verify that each item is completed, as specified.

B. The Haley & Aldrich Field Representative will document site activities in a daily field report to

OSMRE. The Haley & Aldrich Field Representative will provide the field report to the Contractor each day for review and concurrence with information contained within the report.

C. The Haley & Aldrich Field Representative will submit Contractor’s and Haley & Aldrich Field

Representative’s daily report forms to the OSMRE COR on a weekly basis.

D. Neither the presence of the Haley & Aldrich Field Representative nor the observation and/or testing by the Haley & Aldrich Field Representative/Representative’s company shall excuse the Contractor in any way for defects discovered in the Contractor’s work.

1.2 Contractor’s Responsibilities

A. The Contractor shall complete a daily report that shows work accomplished each day, and names and duties of workers, equipment, and materials used for each day’s work, as work proceeds. The

Contractor shall address any questions on the daily submittal, as requested by the Haley & Aldrich

Field Representative.

B. The Contractor shall be responsible for coordinating the project work with the Haley & Aldrich Field

Representative to obtain approval of completed work items, as required in these plans and specifications, prior to initiating subsequent work items.

C. The Contractor’s on-site Superintendent or alternate preapproved by OSMRE shall be on site during all work.

1.3 Submittals

Contractor shall submit a blank copy of the Contractor’s daily report form to OSMRE in accordance with

Section 01 33 00.

Contractor shall submit completed forms for each day’s work to the Haley & Aldrich Field Representative as work proceeds in accordance with Section 01 33 00.

Required submittals are summarized in Table 01 33 00-1.

01 32 00-2 0202993-010

PART 3 - EXECUTION

END OF SECTION 01 32 00

01 33 00-1 0202993-010

SECTION 01 33 00 - SUBMITTAL PROCEDURES

PART 1 - GENERAL

This section describes the submittals that the Contractor shall provide OSMRE prior to and during execution of the specified work. Submittals shall include all information listed below and in the referenced section, and any other information necessary to show conformance with the contract documents.

Required submittals are summarized in Table 01 33 00-1.

01 33 00-2 0202993-010

Table 01 33 00-1 - Summary of Submittal Requirements

Referenced Section Item Minimum Required Submittal Information

01 10 00 Contractor’s

Qualification Statement Submit specified information to OSMRE with bid.

01 10 00 Personnel Data and

Proposed Equipment

Submit names of persons who will be working on the project, including subcontractors along with their qualifications and respective Davis-Bacon category and wage rate with bid. Submit a list of the type of equipment that will be used on this project with bid.

01 10 00 Construction Schedule Submit a daily schedule of work to be completed for this contract with bid.

01 32 00 Contractor’s Daily

Report Form Submit a blank copy of daily report form three work days before pre-construction meeting and completed forms daily as work proceeds.

01 35 29

Health and Safety Plan and Name/

Qualifications of Competent Person

Submit a safety plan that meets requirements of Washington Administrative Code (WAC)-296-800-14005; three work days before pre-construction meeting.

01 74 00 Seed Mix and Fertilizer Submit proposed seed mix and fertilizer at pre-construction meeting.

Submit a copy of the seed bag label, showing constituents, at time of placement.

03 30 00 Concrete Placement

Plan

Submit a concrete placement plan that includes, mix proportions, type and quantity of any potential admixtures, and associated mix design number, mixing method, proposed consolidation equipment/plan, and proposed disposal location, three work days before pre-construction meeting.

07 21 00 PUF Material

Specifications and Placement plan

Submit PUF manufacturer specifications, a placement plan, and qualifications of person who will be placing PUF three work days before pre-construction meeting.

31 11 01 Tree Removal Plan

Submit a tree removal plan that includes proposed tools and methods used to fell the tree including fall direction, safety protocol, qualifications of individual responsible for felling the tree, and considerations for impacts to adjacent trees, three work days before pre-construction meeting.

31 11 02 Scaling Work Plan Submit a scaling work plan that includes scaling sequence, proposed tools and methods, safety provisions, and a debris removal plan, three work days before pre-construction meeting.

32 31 26 Wire Fence Submittal

Submit the product data including manufacturer’s material description, construction detail, and dimensions of individual components and finishes, and proposed rockfall signage graphic, three work days before pre-construction meeting.

Note:

a. Neither OSMRE nor Haley & Aldrich will approve the health and safety plan or be responsible for its adequacy or implementation. Contractor shall be solely responsible for its adequacy and implementation.

01 33 00-3 0202993-010

PART 3 - EXECUTION

Each submittal shall show the specification section number to which it pertains. Submit information specified as follows:

3.1 Pre-Construction Submittals

Submit one copy to OSMRE via fax, mail, or e-mail:

Attn: Cathy Boulware

Contracting Officer

Acquisition Branch Manager

Office of Surface Mining Reclamation and Enforcement

U.S. Department of the Interior

Denver Federal Center - Building 41

Lakewood, Colorado 80215

Telephone: 303.236.2935

Email: cboulware@osmre.gov

Cc: Cody Yankey

Email: cyankey@osmre.gov

3.2 Submittals During Construction

During construction, submit one original to the Haley & Aldrich Field Representative.

END OF SECTION 01 33 00

01 35 29-1 0202993-010

SECTION 01 35 29 - SITE SAFETY

PART 1 - GENERAL

1.1 Description

The Contractor shall comply with all applicable local, state, and federal safety regulations during performance of all work, including, but not limited to:

◼ Washington State Department of Labor and Industries (L&I) Standards;

◼ Federal Occupational Safety and Health Administration (OSHA) Standards; and

◼ Washington State Department of Natural Resources (DNR) Standards.

The Contractor shall inspect the condition of the mine feature/excavation and surrounding area at the start of each work activity and thereafter as frequently as conditions require. The Contractor shall employ a Competent Person on site at all times when work is occurring within or adjacent to the mine feature/excavation. Contractor’s Competent Person shall inspect, sound, and scale the side walls and roof/overhang of the mine workings, if applicable, as well as the adjacent slopes, as necessary to ensure safety. The Contractor shall provide and maintain whatever shoring and/or rock supports are required to accomplish the work safely. The Contractor shall be solely responsible for safety at the site, including safety of employees and all others present. The Contractor shall use practices that protect workers and the public when performing all work.

Underground workings and an abandoned mine feature/opening at the ground surface are both in and adjacent to the Contractor’s work area. Dangerous gases from the mine workings may be present. Depth of cover and degree of underground support in the work area is generally unknown. The Contractor is advised that available information about the extent or condition of the mine workings or other underground hazards at the site may not be complete. The Contractor is advised that the work is in an area where sudden ground collapse may occur without warning.

1.2 Referenced Standards

◼ Washington State Occupational Health Standards (WAC Title 296), and in particular WAC

Chapter 296-155 (Safety Standards for Construction Work).

1.3 Submittals

◼ The Contractor shall submit a Health and Safety Plan to OSMRE, including the name and qualifications of the Contractor’s Competent Person responsible for safety, as specified in Section 01 33 00.

PART 2 - PRODUCTS

2.1 Health and Safety Plan

The Contractor is responsible for developing an Accident Prevention Program, including a written Health and Safety Plan that conforms to WAC 296-800-14005. The plan shall include air monitoring procedures

01 35 29-2 0202993-010 and action levels, fall restraint and/or fall arrest, and shall address the particular hazards of tree removal, scaling, and underground construction or working around an excavation, as applicable.

Information can be obtained from OSHA (www.osha.gov) and L&I (www.lni.wa.gov). The Contractor must submit a copy of the plan to OSMRE, but neither OSMRE nor Haley & Aldrich will approve the plan or be responsible for its adequacy or implementation.

PART 3 - EXECUTION

3.1 Personal Safety Protection

The Contractor shall be solely responsible for safety at the site, including safety of employees and all others present. The Contractor shall take appropriate precautions to prevent access to the excavation, underground mine workings, and other work areas by the general public at all times during the project. At a minimum, the Contractor shall surround work areas with temporary orange construction fencing and warning signs whenever the area is left unattended. The Contractor shall be responsible for the safety of the public at the construction site during the course of the project, including those times when active work is not in progress.

The Contractor shall use practices that protect workers and the public when performing all work, and especially the following:

◼ Personnel working over, near, or within the abandoned mine workings;

◼ Personnel working on, around, and/or below steep slopes, rock overhangs, and excavations;

◼ Personnel using equipment over and near mine-related features; and

◼ Personnel exiting and entering private haul and access roads and public roads with equipment and supplies.

The Contractor shall assess the risk to personnel and equipment, and perform the work in a manner that, in the Contractor’s sole judgment, is safe. The Contractor assumes all risk and liability of damage to equipment or harm to personnel during the course of the work.

The Contractor shall provide all personnel working around the abandoned mine features with appropriate safety equipment such as safety harnesses, ropes, and anchorage, and shall implement appropriate fall protection measures.

Surface excavations shall be sloped as needed according to regulations for safety and stability. If applicable, provide ground support for work underground that conforms to WAC 296-155-730 (19). The

Contractor shall scale/remove loose or unstable material and/or provide rockfall protection and shoring to complete the work safely and to allow OSMRE to observe the work safely.

http://www.osha.gov/ http://www.lni.wa.gov/

01 35 29-3 0202993-010

3.2 Mine Gas Monitoring

The Contractor shall be responsible for properly testing the work area for gas concentrations before starting work near or within the abandoned mine features, and shall continuously monitor thereafter while work is occurring in the area. Mine gas monitoring shall conform to WAC 296-155-730(14).

Tests shall be made for, but not limited to, the following gases and/or atmospheres:

◼ Methane;

◼ Hydrogen sulfide;

◼ Oxygen; and

◼ Carbon monoxide.

If hazardous levels of gases or atmospheres are encountered, personnel shall be removed from the work area and the test(s) repeated. If hazardous gas levels persist, personnel shall be removed from the area until ventilation is provided and acceptable gas levels and/or atmospheres are achieved. Ventilation shall conform to WAC 296-155-730(15). The Contractor shall periodically check the condition of the workers in the area. If there is a potentially explosive level of methane or other unsafe air conditions are detected in or near the work area, immediate measures shall be taken to clear the gas or otherwise remedy conditions before continuation of work.

3.3 Fire Protection

Hot work such as welding, cutting, and grinding within or over the mine opening shall conform to

WAC 296-155-730(18) (b) and WAC Chapter 296-155 (Part H).

The Contractor shall take care to avoid risk of fire from on-site activities. The Contractor shall comply with the forest fire protection requirements of Washington State Statute Revised Code of Washington (RCW)

76.04, and DNR regulation WAC Chapter 332-24. The DNR fire protection program is summarized in the

DNR publication, Forest Fire Protection: Requirements for Operations on or near Forest Land (July 2018).

The Contractor shall be responsible for providing fire protection and/or preventing any potential for fires.

The Contractor shall call the DNR Industrial Fire Precaution Levels (IFPL) hotline to determine fire danger and comply with local requirements.

3.3.1 Fire Restrictions and Liability

The Contractor agrees, at the Contractor’s sole cost and expense, to prevent, detect, and extinguish fires of any origin whatsoever originating at the project site.

The Contractor shall establish and maintain a fire warning and detection program specifically applicable to the project site. The Contractor agrees to promptly abate any fire hazards at the project site. During the entire project duration, the Contractor shall monitor activities at the project site and shall take necessary actions to either extinguish or control emergencies such as fire and shall notify the property owner and local authorities in a prompt and expeditious manner.

01 35 29-4 0202993-010

3.4 Construction Traffic Control

The Contractor shall be responsible for maintaining a safe flow of traffic around work areas at all times, including to and from staging areas and from staging areas to work areas. Staging of material, delivery trucks, and construction equipment on or adjacent to access roads shall be the responsibility of the

Contractor. The Contractor shall be responsible for acquiring any city road permits and/or traffic control plans necessary for completing this work.

END OF SECTION 01 35 29

01 57 13-1 0202993-010

SECTION 01 57 13 - TEMPORARY EROSION AND SEDIMENT

CONTROL

PART 1 - GENERAL

1.1 Description

Work covered in this section includes installation of erosion controls. The Contractor shall install, maintain, and remove temporary erosion and sediment controls as needed. Temporary erosion controls include, but are not limited to, straw bales or wattles, drainage ditches, and silt fences, as necessary and requested by

OSMRE…