Att. 06_FS Supplemental Specs.pdf

FOREST SERVICE

SUPPLEMENTAL SPECIFCATIONS

For

CRAZY WOMAN CREEK

BRIDGE REPLACEMENT &

COORIDOR UPGRADES

NFSR 33

Big Horn National Forest

Powder River Ranger District

Johnson County, Wyoming

Prepared by:

MARCH 2024

Table of Contents Preface

101 - Terms¸ Format¸ and Definitions

102 - Bid¸ Award¸ and Execution of Contract

103 - Scope of Work

104 - Control of Work

105 - Control of Material

106 - Acceptance of Work

107 - Legal Relations and Responsibility to the Public

108 - Prosecution and Progress

109 - Measurement and Payment

151 – Mobilization

152 - Construction Survey and Staking

153 - Contractor Quality Control

155 - Schedules for Construction Contracts

156 - Public Traffic

157 - Soil Erosion and Sediment Control

201 - Clearing and Grubbing

203 - Removal of Structures and Obstructions

204 - Excavation and Embankment

208 - Structure Excavation and Backfill for Selected Major Structures

251 - Riprap

253 – Gabions and Revet Mattresses

272 - Geocell Abutment Stabilization

302 - Minor Crushed Aggregate

552 – Structural Concrete

602 – Culverts and Drains

625 - Turf Establishment

703 - Aggregate

725 - Miscellaneous Material

736 - Geocell

Preface Preface_wo_07_11_2017

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-14 for construction of National Forest System Roads.

101 - Terms¸ Format¸ and Definitions 101.01_National_3_15_2017

Make the following changes to Subsection 101.04:

101.04 Definitions.

Delete these definitions and replace the following:

Bid Schedule — The Schedule of Items.

Bridge — A structure, including supports, erected over a depression or an obstruction such as water along a road, a trail, or a railway and having a deck for carrying traffic or other loads.

Contractor — The individual or legal entity contracting with the Government for performance of prescribed work. In a timber sale contract, the contractor is the “Purchaser”.

Culvert — Any structure with a bottom, regardless of fill depth, depth of invert burial, or presence of horizontal driving surface, or any bottomless (natural channel) structure with footings that will not have wheel loads in direct contact with the top of the structure.

Drawings — (Public Works Contracts) Design sheets or fabrication, erection, or construction details submitted to the CO by the Contractor according to FAR Clause 52.236-21 Specifications and Drawings for Construction. Also refers to submissions and submittals.

Notice to Proceed — (Public Works Contracts) Written notice to the Contractor to begin the contract work.

Right-of-Way — A general term denoting (1) the privilege to pass over land in some particular line (including easement, lease, permit, or license to occupy, use, or traverse public or private lands), or (2) Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

Solicitation—(Public Works Contracts) The complete assembly of documents (whether attached or incorporated by reference) furnished to prospective bidders.

Add the following definitions:

Adjustment in Contract Price — “Equitable adjustment,” as used in the Federal Acquisition Regulations, or “construction cost adjustment,” as used in the Timber Sale Contract, as applicable.

Change — “Change” means “change order” as used in the Federal Acquisition Regulations, or “design change” as used in the Timber Sale Contract.

Forest Service — The United States of America, acting through the Forest Service, U.S. Department of Agriculture.

Neat Line — A line defining the proposed or specified limits of an excavation or structure.

Pioneer Road — Temporary construction access built along the route of the project.

Purchaser — The individual, partnership, joint venture, or corporation contracting with the Government under the terms of a Timber Sale Contract and acting independently or through agents, employees, or subcontractors.

Protected Streamcourse — A drainage shown on the plans or timber sale area map that requires designated mitigation measures.

Road Order — An order affecting and controlling traffic on roads under Forest Service jurisdiction. Road Orders are issued by a designated Forest Officer under the authorities of 36 CFR, part 260.

Shop Drawings — (Timber and Stewardship Contracts) Referred to as “Drawings” in FP-14, include drawings, diagrams, layouts, schematics, descriptive literature, illustrations, lists or tables, performance and test data, and similar materials furnished by Purchaser to explain in detail specific portions of the work required by the contract.

Utilization Standards — The minimum size and percent soundness of trees described in the specifications to determine merchantable timber.

Add Figure 101-1—Illustration of road structure terms:

Figure 101-1—Illustration of road structure terms.

102 - Bid¸ Award¸ and Execution of Contract 102.00_National_11_9_2016

Delete Section 102 in its entirety.

Delete Section 102.

103 - Scope of Work 103.00_National_11_9_2016

Delete all of Section 103 except Subsection 103.01 Intent of Contract.

Delete Subsections 103.02, 103.03, 103.04, 103.05.

104 - Control of Work 104.00_National_11_9_2016

Delete Subsections 104.01, 104.02, and 104.04.

Delete Subsections 104.01, 104.02, 104.04.

104.06_National_11_9_2016

Add the following to Subsection 104.06:

104.06 Use of Roads by Contractor.

The Contractor is authorized to use roads under the jurisdiction of the Forest Service for all activities necessary to complete this contract, subject to the limitations and authorizations designated in the Road Order(s) or described in the contract, when such use will not damage the roads or national forest resources, and when traffic can be accommodated safely.

105 - Control of Material 105.02_National_11_1_2016

Add the following to Subsection 105.02(a):

105.02(a) Government-provided sources.

Government-provided sources for this project are identified as follows:

(1) Government-provided optional sources for this project are identified as follows:

Pay Item Description Material source number or name

Waste Site Pole Creek Pit 30201 Crushed Aggregate Pole Creek Pit and Hess Creek Pit

A waste site will be designated within approximately 5 miles of the project site. This site is to be used for the disposal of unsuitable or excess excavated material only. All other materials designated for removal and disposal must be disposed of away from Forest Land as per FSSS Section 203.

105.02_National_11_1_2016

Add the following to Subsection 105.02c:

105.02(c) Contractor-located sources.

All material (e.g., soil, gravel, sand, borrow, aggregate, etc.) transported onto National Forest System land or incorporated into the work shall be weed-free. The Contracting Officer may request written documentation of methods used to determine the weed-free status of any and all materials furnished by the contractor. Contractor-provided expertise and methods to establish weed-free status must be appropriate for the weeds of concern in the local area. The following applies to this contract:

A Forest Service weed specialist will inspect proposed sources to determine weed-free status. Provide the Contracting Officer written notification of proposed material sources 14 days prior to use. Written approval of the specific source will be provided to the contractor by the CO. If weed species are present in the proposed source, appropriate mitigation measures may allow conditional use of the source as required by the Contracting Officer.

105.02_National_7_10_2017

Add the following to Subsection 105.02 (a):

106 - Acceptance of Work 106.01_National_11_9_2016

Delete Subsection 106.01 and replace with the following:

106.01 Conformity with Contract Requirements.

Follow the requirements of FAR Clause 52.246-12 Inspection of Construction.

References to standard test methods of AASHTO, ASTM, GSA, and other recognized standard authorities refer to the methods in effect on the date of solicitation for bids.

Perform all work to the lines, grades, cross-sections, dimensions, and processes or material requirements shown on the plans or specified in the contract.

Incorporate manufactured materials into the work according to the manufacturer’s recommendations or to these specifications, whichever is stricter.

Plan dimensions and contract specification values are the values to be strived for and complied with as the design values from which any deviations are allowed. Perform work and provide material that is uniform in character and reasonably close to the prescribed value or within the specified tolerance range. The purpose of a tolerance range is to accommodate occasional minor variations from the median zone that are unavoidable for practical reasons.

When standard manufactured items are specified (such as fence, wire, plates, rolled shapes, pipe conduits, etc., that are identified by gauge, unit mass, section dimensions, etc.), the identification will be considered to be nominal masses or dimensions. Unless specific contract tolerances are noted, established manufacturing tolerances will be accepted.

The Government may inspect, sample, or test all work at any time before final acceptance of the project. When the Government tests work, copies of test reports are furnished to the Contractor upon request. Government tests may or may not be performed at the work site. If Contractor testing and inspection is verified by the Government, the Contractor’s results may be used by the Government to evaluate work for acceptance. Do not rely on the availability of Government test results for process control.

Acceptable work conforming to the contract will be paid for at the contract unit bid price.

Four methods of determining conformity and accepting work are described in Subsections 106.02 to 106.05 inclusive. The primary method of acceptance is specified in each Section of work. However, work may be rejected at any time it is found by any of the methods not to comply with the contract.

Remove, repair, or replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted. Removing, repairing, or replacing work; providing temporary traffic control; and any other related work to accomplish conformity will be at no cost to the Government.

(a) Disputing Government test results. If the accuracy of Government test results is disputed, promptly inform the CO. If the dispute is unresolved after reasonable steps are taken to resolve the dispute, further evaluation may be obtained by written request. Include a narrative describing the dispute and a proposed resolution protocol that addresses the following:

1. Sampling method;

2. Number of samples;

3. Sample transport;

4. Test procedures;

5. Testing laboratories;

6. Reporting;

7. Estimated time and costs; and

8. Validation process.

If the evaluation requires additional sampling or testing be performed, mutually agree with the Government on witnessing procedures and on sampling and testing by a third party laboratory. Use a third party laboratory accredited by the AASHTO accreditation program. Provide proof of the laboratory’s accreditation for the test procedures to be used. Do not use the same laboratory that produced the disputed Government test results or that produced the test results used as a basis for the dispute.

The CO will review the proposed resolution protocol and may modify it before final approval and execution.

The Government will use the approved resolution protocol test results to determine the validity of the disputed testing. If the Government test results are validated, the Contractor will be responsible for all costs associated with developing and performing the resolution protocol. If the Government test results are not validated, the Government will be responsible for all costs associated with developing and performing the resolution protocol. If the validity of the Government test results cannot be determined, the Contractor and Government will equally share all costs associated with developing and carrying out the resolution protocol.

(b) Alternatives to removing and replacing non-conforming work. As an alternative to removal and replacement, the Contractor may submit a written request to:

1. Have the work accepted at a reduced price; or

2. Be given permission to perform corrective measures to bring the work into conformity.

The request must contain supporting rationale and documentation. Include references or data justifying the proposal based on an evaluation of test results, effect on service life, value of material or work, quality, aesthetics, and other tangible engineering basis.

The CO will determine disposition of the nonconforming work.

106.02_National_11_9_2016

Delete Subsection 106.02 and replace with the following:

106.02 Visual Inspection.

Acceptance is based on visual inspection of the work for compliance with the specific contract requirements. Use prevailing industry standards in the absence of specific contract requirements or tolerances.

106.07_National_11_1_2016

Delete Subsection 106.07.

106.07 Partial and Final Acceptance.

107 - Legal Relations and Responsibility to the Public 107.02_National_11_1_2016

Add the following to Subsection 107.02:

107.02 Protection and Restoration of Property and Landscape.

Work within the wetted perimeter of streams is allowed only as specified by the approved project permits.

107.05_National_11_9_2016

Delete Subsection 107.05.

107.05 Responsibility for Damage Claims.

Delete the following from Subsection 107.06:

107.06 Contractor’s Responsibility for Work.

“except as provided in Subsection 106.07”.

Delete Subsection 107.09.

107.09 Legal Relationship of the Parties.

Add the following to Subsection 107.10:

107.10 Environmental Protection.

Design and locate equipment repair shops, stationary refueling sites, or other facilities to minimize the potential and impacts of hazardous material spills on Government land.

Before beginning any work, submit a Hazardous Spill Plan. List actions to be taken in the event of a spill. Incorporate preventive measures to be taken, such as the location of mobile refueling facilities, storage and handling of hazardous materials, and similar information. Immediately notify the CO of all hazardous material spills. Provide a written narrative report form no later than 24 hours after the initial report and include the following:

• Description of the item spilled (including identity, quantity, manifest number, and other identifying information).

• Whether amount spilled is EPA or state reportable, and if so whether it was reported, and to whom.

• Exact time and location of spill including a description of the area involved.

• Containment procedures.

• Summary of any communications the Contractor had with news media, Federal, state and local regulatory agencies and officials, or Forest Service officials.

• Description of clean-up procedures employed or to be employed at the site including final disposition and disposal location of spill residue.

When available provide copies of all spill related clean up and closure documentation and correspondence from regulatory agencies.

The Contractor is solely responsible for all spills or leaks that occur during the performance of this contract. Clean up spills or leaks to the satisfaction of the CO and in a manner that complies with Federal, state, and local laws and regulations.

108 - Prosecution and Progress 108.00_National_11_9_2016

Delete Section 108 in its entirety.

Delete Section 108.

109 - Measurement and Payment 109.00_National_11_9_2016

Delete Subsections 109.06, 109.07, 109.08, and 109.09:

Delete Subsections 109.06, 109.07, 109.08, 109.09.

109.02_National_11_9_2016

Add the following sentence to Subsection 109.02(b):

109.02 Measurement Terms and Definitions.

(b) Contract quantity.

Contract quantities will be adjusted only when there are errors in the original design of 15% or more.

109.03_National_11_1_2016

Add the following to Subsection 109.03(c):

109.03 Weighing Procedures and Devices.

(c) Project weighing system.

For aggregates weighed for payment, adjust scale weights of material to deduct the daily average moisture content in excess of 2 percentage points over optimum moisture as determined by AASHTO T 99 or the designated compaction method. If moisture determination is necessary, determine the daily average moisture content in accordance with AASHTO T 255, from not less than three representative samples of aggregate taken at random intervals each day that aggregate is being weighed.

Manual scales may be used if approved in writing by the CO and if the method of weighing meets all other contract requirements.

151 – Mobilization

Delete Section 151 in its entirety and replace with the following.

151.01 Description

This work consists of moving personnel, equipment, material, and incidentals to the project and performing all work necessary before beginning work at the project site;

obtaining of permits, insurance, and bonds. This work also includes washing and treating construction equipment and vehicles necessary for equipment transport to remove seeds, plants, and plant fragments before the equipment is used on Forest Service lands, according to the requirements within.

151.02 Construction Requirements

Wash the sides, tops, and undercarriages of all construction equipment, including vehicles used for hauling materials off of paved roads. Remove all seeds, plants, plant fragments, dirt, mud, and debris from the construction equipment. Only equipment inspected by the Forest Service will be allowed to operate within the project area. All subsequent move-ins of equipment to the project area will be treated in the same manner as the initial move-in. This requirement does not apply to cars, pickup trucks, and other vehicles that regularly travel between the construction site and areas off the National Forest.

Equipment will be considered free of soil, seed, and other such debris when a visual inspection by the CO does not disclose such material. Disassembly of equipment, components or the need for specialized inspection tools is not required.

Notify the CO in writing at least 72 hours before moving any construction equipment onto the national forest. Notification will include an agreed upon location where the equipment will be available for inspection by the Forest Service. Inspection will be required after every cleaning.

151.03 Measurement

Clean equipment prior to moving onto this project. Subsequent cleanings necessitated by the Contractor’s actions but not directed by the CO will not be included in the measurement for payment.

Measure mobilization according to Subsection 109.02.

151.04 Payment

The accepted quantities will be paid at the contract price per unit of measurement for the Section 151 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

Progress payments for mobilization by the lump sum will be paid as follows:

(a) Bond premiums will be reimbursed according to FAR Clause 52.232-5 Payments Under Fixed-Price Construction Contracts, after receipt of the evidence of payment.

(b) When 5 percent of the original contract amount is earned from pay items (not including mobilization), 50 percent of the mobilization pay item, or 5 percent of the original contract amount, whichever is less, will be paid.

(c) When 10 percent of the original contract amount is earned from pay items (not including mobilization), 100 percent of the mobilization pay item, or 10 percent of the original contract amount, whichever is less, will be paid.

(d) Any portion of the mobilization pay item in excess of 10 percent of the original contract amount will be paid after final acceptance.

152 - Construction Survey and Staking 152.00_National_12_12_2016

Add the following to Subsection 152.02:

152.02 Qualifications.

Conduct all construction staking under the direction of a licensed professional surveyor who is closely associated and familiar with construction staking.

153 - Contractor Quality Control 153.02_National_11_1_2016

Delete Subsection 153.02 and replace with the following:

153.02 Qualifications.

Submit the following for approval with the quality control plan:

(a) Quality control manager (QCM). Furnish a QCM who has at least 2 years’ experience in construction, inspector, quality control and material testing on construction projects of similar type and scope.

(b) Testers. Provide testers with at least one year experience in the type of sampling and testing required, and with one of the following for the type of sampling and testing performed:

(1) NICET Level II certification in highway material or equivalent state or industry certification;

(2) Certification by a regional certification program (such as Western Alliance for Quality Transportation Construction (WAQTC), Northeast Transportation Technician Certification Program (NETTCP), Southeast Task Force for Technician Training and Qualification (STFTTQ), or Multi Regional Training and Certification (M-TRAC)); or

(3) At least one year employment by an AASHTO accredited laboratory performing equivalent sampling and testing.

153.03_National_11_1_2016

Add the following paragraph to the end of Subsection 153.03(b):

153.03 Quality Control Plan.

(b) Quality Control Procedures.

Submit written proposals for approval of alternate AASHTO or State approved test methods. Alternate methods may be allowed based on documented equivalence to the specified method.

153.07_National_11_1_2016

Delete Subsection 153.07 and replace with the following:

153.07 Records and control charts.

Maintain complete testing and inspection records by pay item number and make them accessible to the CO.

Add the following Subsection 153.10:

153.10 Project Submittals.

At a minimum the contractor shall provide project submittals as shown on the below Submittal Log. Submittal requirements are listed in the Standard Specifications, Supplemental Specifications, and Plans.

Submittal Log

Log No.

Incidental to

Pay Item(s)

Description of Submittal

Type of Submittal

Requirement found in

Specification No./Drawings

Additional Specification References

1 151 Weed Free Material Source Certification

Material Certification

FSSS

105.02(b)

2 151 Hazardous Spill Plan Plan FSSS 107.10

3 151 Contractor Quality Control Plan

Plan 153.02 552.09

4 156 Traffic Control Plan Plan FSSS 156.03

5 157 Soil Erosion and Pollution Control Plan

Plan FSSS 157.04

6 157 Stream Diversion & Dewatering Plan

Plan FSSS 157.04 Drawings

7 208 Excavation Plan Plan FSSS 208.03 Drawings

8 251 Riprap Material

Gradation

705.02 Drawings

9 253 Gabion Rock Material

Certification

253.04 705.01

10 253 Welded Wire Gabion Baskets

Material Certification

720.02 Drawings

11 272 Geocell Abutment Stabilization

Material Certification

FSSS 272.06

106, FSSS 736,

Drawings

12 272 Geocell: Course Granular Backfill

Material Certification

FSSS 272.06

106, FSSS

703.03, Drawings

13 272 Geocell: Geotextile – Class I. Type A, Non-woven

Material Certification

FSSS 272.06

106, 714, Drawings

14 302 Aggregate Gradation Material

Certification

FSSS 302

703.06, Drawings

Submittal Log

Log No.

Incidental to

Pay Item(s)

Description of Submittal

Type of Submittal

Requirement found in

Specification No./Drawings

Additional Specification References

15 552 Structural Concrete:

Mix Design

Mix Design 552.03 Drawings

16 552 Structural Concrete:

Precast Structures

Shop Drawing

FSSS 552.03

104, 552, 553, 554

17 552 Structural Concrete:

PCI Certification

Fabrication Certification

FSSS 552.02

18 552 Structural Concrete:

Testing

Test Results FSSS 552.20 106, Drawings

19 552 Reinforcing Steel and Wire Rope

Material Certification

709.01 553, Drawings

20 552 Miscellaneous Material: Grout

Product Approval

FSSS 725.20

553, Drawings

21 555 Steel Structures Shop

Drawing 555.03

22 555 Steel Structures Material

Certification 555.03, 555.05

23 557 Timber Structures Shop

Drawing 104.03

557, Drawings

24 557 Timber Structures:

Materials and Treatment

Material Certification

557.19 106, 716, Drawings

25 564 Elastomeric Bearing Pads

Material Certification

564.04 564; 717

26 622 Equipment Rental Equipment Approval

FSSS 622.02

155 - Schedules for Construction Contracts 155.00_National_11_9_2016

Delete Section 155 in its entirety.

Delete Section 155.

156 - Public Traffic 156.00_National_11_4_2016

Delete Section 156 in its entirety and replace with the following:

Section 156. – PUBLIC TRAFFIC Description

156.01 This work consists of controlling and protecting public traffic adjacent to and within the project.

Material

156.02 Conform to the MUTCD and the following Sections and Subsections:

Permanent Traffic Control 633

Traffic Signing and Marking Material 718

Concrete Barriers and Precast Guardwalls 618

Temporary plastic fence 710.11

Construction Requirements

156.03 General. Accommodate traffic according to MUTCD, approved traffic control plan and this section. Perform work in a manner that ensures safety and convenience of the public. Unless otherwise provided for in Table 156-1, keep existing roads open to all traffic during road improvement work, and maintain them in a condition that will adequately accommodate traffic. Delays may not exceed 10 minutes at any one time followed by an open period of no less than 30 minutes. Accommodate public traffic on roads adjacent to and within the project until the project is accepted according to Subsection 106.07(b).

Submit traffic control plan at least 30 days prior to intended use. Perform no work that interferes or conflicts with traffic or existing access to the roadway surface until a traffic control plan has been approved.

Post construction signs and traffic control devices in conformance with MUTCD and Forest Service EM 7100-15. All required signs will be in place and approved prior to beginning work on project.

If the Contractor agrees in writing to allow public traffic to use a new road being constructed prior to completion, it will be considered an existing road for traffic control purposes.

156.04 Temporary Traffic Control. Install and maintain temporary traffic control devices adjacent to and within the project as required by the approved traffic control plan and the MUTCD. Install and maintain traffic control devices as follows:

(a) Furnish and install traffic control devices before the start of construction operations.

(b) All detours outside of clearing limits will be approved in writing by the Contracting Officer as part of the traffic control plan.

(c) Install only those traffic control devices needed for each stage or phase.

(d) Relocate temporary traffic control devices as necessary.

(e) Remove devices that no longer apply to the existing conditions.

(f) Immediately replace any device that is lost, stolen, destroyed, or inoperative.

(g) Keep temporary traffic control devices clean.

(h) Remove all temporary traffic control devices upon contract completion or when approved.

(i) When required, use flaggers certified by the American Traffic Safety Services Association, the National Safety Council, the International Municipal Signal Association, a state agency, or other acceptable organization. Perform the work described under MUTCD Part 6. Use type III, VII, VIII, or IX retroreflective sheeting on flagger paddles. Do not use flags. Flaggers must wear high visibility safety apparel as required by MUTCD 6E.02.

156.05 Temporary Closures. Road segments may be closed as shown in Table 156-

1. The maximum consecutive days of closure shall be followed by a minimum number of consecutive days open to traffic as shown. Maintain traffic control devices during closure period(s). Appropriate barricades and signs will be erected and maintained as shown in the traffic control plan or as otherwise designated.

Prior to closing roads during construction, give written notice to the Contracting Officer at least 10 days in advance.

Table 156-1 Temporary Road Closures

Road Number

From Terminus

To Terminus

Maximum Consecutive Days of Closure

Minimum Consecutive Days Open

NF 33

Area 1 0.00 4.90 21 5

NF 33

Area 2 0.00 4.90 21 5

NF 33

Area 3 0.00 4.90 5 5

NF 33

Area 4 0.00 4.90 5 5

NF 33

Area 5 0.00 4.90 21 5

NF 33

Area 6 0.00 4.90 5 5

NF Area 7 0.00 4.90 5 5

156.06 Acceptance. Public traffic work will be evaluated under Subsection 106.02.

Measurement and Payment

156.07 Do not measure Public Traffic for payment. Payment for contract work is provided indirectly. See Subsection 109.05.

157 - Soil Erosion and Sediment Control 157.04_National_11_1_2016

157.02 Materials

Add the following:

Provide bales, wattles, logs and rolls from a certified noxious weed free source.

157.04 General.

Delete the first two paragraphs and replace with the following:

Submit an Erosion Control Plan detailing permanent and temporary control measures to minimize erosion and sedimentation during and after construction in accordance with the plans and storm water permits. Do not modify the type, size, or location of any control or practice without approval. Submit the erosion control plan proposal at least 7 days before operations begin to the CO for approval.

Reflect in the Erosion Control Plan special concerns and measures necessary to protect resources and government improvements. Include:

(a) The construction activities and sequence of implementation relating to specific erosion control measures.

(b) The location and type of permanent controls to be implemented during construction.

(c) The location and type of temporary controls to be implemented during construction.

(d) For work in stream channels with running water a detailed dewatering plan.

(e) For work in stream channels without flowing water describe level of ground and vegetative disturbance and measures to reduce potential sediment delivery.

(f) Description of the monitoring plan.

Add the following to the third paragraph:

Upon completion of construction at the site, remove all temporary erosion control devices, dewatering materials and equipment from Government property.

157.09 Water Crossings.

At any channel crossing where there is running water, dewater by rerouting water flow around the site before and during excavation and embankment operations.

201 - Clearing and Grubbing 201.04_National_11_8_2016

Delete and replace Subsection 201.04(d) with the following:

201.04(d) Clearing.

(d) Trim tree branches that extend over the road surface and shoulders to attain a clear height of 14 feet. Trim tree limbs as near flush with the trunk as practicable.

201.04_National_11_2_2016

Add the following paragraph to Subsection 201.04:

201.04 Clearing.

(e) Do not cut vegetation less than 3 feet in height and less than 3 inches in diameter that is within the clearing limits but beyond the roadway and not in a decking area and that does not interfere with sight distance along the road unless otherwise designated.

201.06_National_11_2_2016

Delete and replace Subsection 201.06 with the following:

201.06 Disposal.

Dispose of construction slash by placing on finished embankment slopes to reduce soil erosion. When placing slash on embankment slopes start at the toe of the fill and place as flat as practicable on the completed slope.

If trees are removed from within a Riparian Habitat Conservation Area during project work, trees are to remain on-site and will be placed as directed by the CO.

If trees are removed from outside of a Riparian Habitat Conservation Area during project work, trees could be merchantable timber. In this instance, merchantable timber is the Government's property. Limb and deck merchantable timber on site as directed by the CO.

203 - Removal of Structures and Obstructions 203.04_National_11_2_2016

Make the following changes to Subsection 203.04(b):

203.04 (b) General.

Delete the fifth paragraph of Subsection 203.04(b) and replace with the following:

Remove structures and obstructions in the roadbed to 12 inches (300 millimeters) below subgrade elevation. Remove structures and obstructions outside the roadbed to 12 inches (300 millimeters) below finished ground or to the natural stream bottom.

Delete the seventh paragraph of Subsection 203.04(b) and replace with the following:

Remove and dispose of any existing bridge as specified by the CO.

Modify the Subsection 203.05 as follows:

203.05 Disposing of Material.

(a) Removal from project. Add the following:

All materials designated for removal become the property of the Contractor and are to be disposed of by removing off of Forest Service Lands in accordance with all local, state, and federal requirements.

(b) Burn. Delete this section.

(c) Bury. Delete this section.

204 - Excavation and Embankment 204.00_National_11_4_2016

Delete section and replace with the following.

Section 204.11 — Compaction Layer Placement (Roller Compaction) Method. Place material in horizontal layers not exceeding 12 inches prior to compaction except when the material contains rock more than 9 inches in diameter, in which case layers may be of sufficient thickness to accommodate the material involved. Adjust the moisture content of the material to obtain a mass that will not visibly deflect under the load of the hauling and spreading equipment. Operate compaction equipment over the full width of each layer until visible deformation of the layer ceases or, in when a sheepsfoot roller is used, the roller "walks out" of the layer. Make at least three complete passes.

Delete the first paragraph and substitute with the following:

204.14 Disposal of Unsuitable or Excess Material. Dispose of unsuitable or excess material at designated sites approved by the CO.

Modify section as follows:

204.15 Acceptance.

Delete reference to Table 204-1.

Delete Table 204-1.

208 - Structure Excavation and Backfill for Selected Major Structures

Add the following to Subsection 208.02:

208.02 Material.

Backfill Material 704.03

Modify Subsection 208.03 as follows:

208.03 General.

Delete the 6th paragraph and replace with the following:

Conserve suitable material for backfill from excavated material. Do not deposit excavated material in or near a waterway. Do not stockpile excavated material or allow equipment closer than 24 inches from the edge of the excavation. Use suitable material in embankment construction when approved. Field drain and dry excessively wet material that is otherwise suitable for backfill before placement. Dispose of unsuitable or excess material at designated sites shown on the drawings or as directed by the CO according to Subsection 204.14.

Add the following:

Submit an Excavation Plan for approval prior to beginning the work. As a minimum, the Excavation Plan must include: drawings and a written outline illustrating and describing the proposed excavation limits, methods, equipment to be used, location of stockpiles, and estimated quantities. The Excavation Plan must comply with all applicable OSHA requirements and list the soil type assumed.

208.07_National_11_8_2016

Add the following to Subsection 208.07:

208.07 Dewatering.

Construct diversions according to Subsection 157.10 Diversions. Submit dewatering plans according to Subsection 104.03.

Delete Subsection 208.08(d) and replace with the following:

208.08 Foundation Preparation.

(d) Unstable material below footing elevation. Excavate unstable material below foundation grade as shown in the drawings or directed by the CO and backfill with backfill material meeting Section 704.03. Place backfill in horizontal layers that do not exceed 6 inches (150 millimeters) in compacted thickness. Compact each layer according to Subsection 208.10.

Delete Subsection 208.10 and replace with the following:

208.10 Compacting.

Adjust moisture content of backfill to within 2 percent of the optimum moisture content.

Compact until visible deformation ceases.

Modify Subsection 208.12 as follows:

208.12 Acceptance.

Delete reference to Table 208-1.

Delete Table 208-1.

251 - Riprap

Delete the first sentence in Subsection 251.01 and replace with the following:

251.01 This work consists of furnishing, hauling, and placing of riprap for bank protection, slope protection, drainage structures, erosion control, and other features shown on the plans.

Modify Subsection 251.07 as follows:

251.07 Acceptance.

Delete sampling and testing requirements of Table 251-1.

Delete the last sentence and add the following:

Structure excavation and backfill will be evaluated under Section 208.

Delete Table 251-1.

253 – Gabions and Revet Mattresses

253.04 Basket Assembly

Gabion baskets shall be welded wire type.

253.05 Structure Erection

Add the following:

For gabion baskets designed on a radius detach one end of the receiving basket and insert the providing basket until the outside ends match. Connect the baskets along the receiving basket’s edge.

272 - Geocell Abutment Stabilization

Description

272.01 This work consists of constructing geocell abutment stabilization at each abutment using a cellular confinement system such as Presto Geoweb Cellular Confinement System or Webtec TerraCell in accordance with the plans and manufacturers recommendations.

Materials

272.02 Requirements. Ensure that material conforms to specifications in the following subsections:

Granular Backfill Type (a) 703.03

Geotextile, Class 1, Non-Woven, Type A 714.01

Geocell 736

Construction Requirements

272.03 General. Perform the work specified in Section 208 or 209. Use ditches, grading or similar methods to prevent surface runoff that may occur during inclement weather from ponding in the foundation excavation.

272.04 Storage and Handling of Material. During shipment and storage, wrap geotextile materials in heavy-duty protective covering. Protect the material from mud, soil, dust, debris and sunlight prior to installation.

272.05 Geotextile Installation. Place the geotextile according to Section 207. Have the surface approved by the CO prior to placing geotextile.

Sew or overlap adjacent strips a minimum of 12” at joints. Insert securing pins through both strips of overlapped geotextile at minimum intervals of 3 feet, but no closer than 2 inches to each edge, to prevent the geotextile from being displaced.

Have the installed geotextile approved by the CO prior to setting the geocells.

272.06 Geocell Installation. Furnish the CO with product literature and certification as required in Section 106.03 for review and approval 7 days prior to installation. When requested by the CO, furnish a sample of the geocell from each lot for verification testing.

Place the geocell sections directly on the prepared subgrade. Expand the geocell sections into position at the grades and lines as shown on the plans. Hold the expanded geocell sections with suitable “stretcher frames”, steel stakes driven inside selected outer cell walls, or other similar methods as allowed by the manufacturer prior to filling. Ensure that the individual cells have expanded to the minimum dimensions required by the manufacturer. If necessary field cut sections as per the manufacturer’s recommendations to the lines shown on the plans.

Connect geocell panels in accordance with the manufacturer’s recommendations.

272.07 Infill Placement. Furnish the CO with the manufacturer’s specific recommendations for backfilling 7 days prior to placement of the geocells.

Place coarse granular backfill meeting Subsection 703.03 into the expanded cells with equipment appropriate for the site conditions such as a backhoe or a front-end loader. Do not drop infill material more than 3 feet to avoid damage or displacement of the cell walls.

Overfill the geocell cells and level to a minimum of 2 inches above the top of the cell walls.

A front-end loader may be used to place the infill provided that it only traffics above geocell sections that have been filled and covered with the minimum 2 inches of additional material. Compact the infill material with a vibratory plate compacter. Operate compaction equipment over the full width of the geocell. Make at least three complete passes or until visible deformation of the infill ceases. Grade the surface to be ½ inch above the top of the cells. Ensure that the cell walls are not exposed after fine grading is completed.

Use the geocell manufacturer’s specific recommendations for backfilling if they are more stringent than stated above.

272.08 Acceptance. Geotextile will be evaluated under Subsections 106.02 and 714.01.

Material for geocell will be evaluated under Subsections 106.2 and 106.03.

Granular backfill material will be evaluated under Section 106.02 and 106.04.

Measurement

272.09 Method. Measure the items listed in the bid schedule according to Subsection

109.02 and the following.

Measure geocell by the square yard in place, exclusive of wastage.

Payment

272.10 Basis. The accepted quantities will be paid for at the contract price per unit of measurement for the Section 272 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

The cost for furnishing and placing the granular backfill required in Sections 207, 208, and 209 for geocell infill is incidental to this pay item and no separate payment will be made.

The cost for furnishing and placing geotextile for the geocell installation is incidental to this pay item and no separate payment will be made.

302 - Minor Crushed Aggregate 302.04_National_7_10_2017

Add the following to Subsection 302.04

302.04 Placing Crushed Aggregate

Written approval of the surface is required before placing aggregate.

Add the following to 302.04(a)

(a) Roadway aggregate.

For pit run or grid-rolled material, furnish material smaller than the maximum size, no gradation will be required otherwise. After processing on the road, remove all oversize material from the road and dispose as directed by the

CO.

Delete Subsection 302.05 and replace with the following:

(a) Roadway aggregate. Compact roadway aggregate by operating compaction equipment over the total width until visible deformation ceases. A minimum of three completed roller passes shall be made at a moisture content suitable for compaction.

552 – Structural Concrete

552.08 Delivery.

(a) Truck mixer/agitator.

Add the following:

Do not exceed 300 total revolutions, including both mixing and agitating speed.

552.11(b)(6).

Delete this Subsection and substitute the following:

(6) Precast elements.

(a) Provide precast concrete members of the size, shape, strength, air content, and finish that are SHOWN ON THE DRAWINGS. Precast concrete members must be manufactured by a plant with any of the following certifications:

Precast / Prestressed Concrete Institute (PCI) o Bridge 1, Precast Bridge Products (no prestressed reinforcing).

o Commercial 1, Precast Concrete Products (no prestressed reinforcing) National Precast Concrete Association (NPCA) o Precast American Concrete Pipe Association (ACPA) o QCast

Submit a copy of the transmittal letter of the latest PCI, NPCA, or ACPA inspection/certification with the shop drawings.

In lieu of the above certifications, the Contractor shall retain a professional engineer to provide quality assurance for the work by inspecting and certifying in writing the concrete members are constructed in accordance to the specification and shall include but not limited to:

(1) Shop drawing review.

(2) Concrete member dimensions.

(3) Concrete mix design.

(4) Aggregate sources and test results.

(5) Steel reinforcing placement.

(6) Concrete curing and strength test results.

(7) Concrete material certifications.

(8) Placement mixing, delivery and sampling.

Certification of the above shall be received by the CO prior to shipment and installation at the job site.

Perform all sampling, testing, and inspection necessary to ensure quality control of the component materials and the concrete. Sample and test for quality control and acceptance testing in accordance with the AASHTO or ASTM test methods prescribed in Section 552.

Maintain adequate records of all inspections and tests. Keep records that indicate the nature and number of observations made, the number and type of deficiencies found, the quantities approved and rejected, and the nature of any corrective action taken.

(b) Tolerances. Place and consolidate concrete so that shrinkage cracks are not produced in the member.

Verify that the prefabricated elements will fit-up and align properly before shipping from the precast facility. Assembling each superstructure and substructure composed of prefabricated elements in the yard prior to shipping the elements to the project site is a suitable way to perform such verification. If assembled in the yard, use blocking to simulate the support of the elements and the spacing between the elements. Verify all elements are constructed in compliance with all plan requirements. Dry fit all connections in the fabrication yard prior to installation of the elements at the bridge site.

Fabricate precast concrete foundation units straight and true size and shape with exposed edges and corners precise and true so each finished unit complies with the following dimension tolerances as well as position tolerances for cast in Items:

(1) Length shall not vary by more than 3/4 inch.

(2) Height/Width shall not vary from that shown in the design by more than 1/4 inch.

(3) Local smoothness shall be no more than 1/4 Inch in 10 feet for any surface.

(4) Position of inserts for structural connections shall not vary from that shown in the shop drawings by more than 1/2 inch.

(5) Placement of non-prestressed reinforcement shall comply with Section 554 Reinforcing Steel.

(c) Submittals. Submit fabrication and installation drawings for approval according to Subsection 104.03. Show all details necessary for fabrication, including the following:

(1) Details and location of all lifting holes, inserts, hardware, devices, and any additional reinforcing required for lifting. Include supporting calculations and lifting procedures.

(2) Describe the method of curing, handling, storing, and transporting the elements.

(3) Concrete mix design.

Do not order materials or begin work until receiving final approval of the shop drawings.

(d) Quality Assurance.

(1) Permanently mark each element with date of fabrication, supplier Identification and module identification. Stamp markings in fresh concrete.

(2) Prevent cracking or damage of precast components during handling and storage.

(3) Replace or repair defective or broken precast concrete deck and concrete deck overhang elements according to Section 106. Requests to repair defective or broken elements are subject to the following:

(a) Obtain approval before performing concrete repairs.

(b) Concrete repair work must reestablish the module's structural integrity, durability, and aesthetics to the satisfaction of the CO.

(c) Describe the cause of damage and the corrective action taken to eliminate future damage.

(d) An updated CPM schedule showing the effects of repair work on project completion.

(4) Elements will be rejected if they do not conform to the contract documents, and for the following reasons:

(a) Elements fabricated before the date that shop drawings are approved.

(b) Full-depth cracking of concrete and concrete breakage that is not repairable.

(c) Cracks that extend to the nearest reinforcement plane, or fine surface cracks that do not extend to the nearest reinforcement plane but are numerous or extensive.

(d) Camber that does not meet the requirements of the plans or fabrication drawings.

(e) Honeycombed texture.

(f) Dimensions exceeding the allowable tolerances.

(g) Damage during fabrication, transportation, erection, or construction.

(5) Document all test results for structural concrete. Show in the quality control files at least the following information:

(a) Element identification.

(b) Date and time of fabrication concrete pour.

(c) Concrete cylinder test results.

(d) Concrete mix design and the batch print out.

(e) Form-stripping date.

(f) Location and number of blockouts and lifting inserts.

(g) Temperature, moisture, and duration of curing period.

(h) Approved repair procedures.

(e) Handling, storing and transporting.

(1) Damage/Cracking. Prevent cracking or damage of prefabricated elements and modules during handling, storing and transporting.

(2) Precast Element Sizes. Finalize the size of precast elements with consideration for shipping restrictions, equipment availability and site constraints.

Show the final element sizes on the assembly plan.

(3) Lifting Devices. The design and detail of the lifting devices is the responsibility of the Contractor. Use lifting devices in a manner that does not cause damage, cracking or torsional forces. Place the lifting devices in locations that are not visible once the prefabricated element is placed, or within recessed pockets that can be patched after installation.

(4) Safety. The Contractor is responsible for the safety and stability of prefabricated elements during all stages of handling, transportation and construction.

(5) Handling and Storing. Store the precast units in a horizontal and upright position, supported at their designated bearing points. Follow Chapter 5 of the PCI Design Handbook for handling and erection bracing requirements.

Lift the precast elements so that the angle between the top surface of the precast element and the lifting line is not less than 60 degrees when measured from the top surface of the precast elements to the lifting line. If two cranes are used, then the lifting lines shall be vertical. Lift the modules at the designated points. The Contractor is responsible for handling stresses in the modules. Choose the locations of the lifting points so that the anticipated flexural tensile stress induced in the top of the structural concrete for the assumed support locations is not greater than the allowable stress.

Select smooth and well compacted storage areas to prevent damage due to differential settlement. Support precast elements during storage to prevent cracking or creep induced deformation (sagging). Check precast elements at least once per month to ensure that creep-induced deformation does not occur.

Protect the elements from freezing temperatures for 5 days after casting or until precast concrete attains design compressive strength. Do not remove thermal protection any time before the units attain the specified compressive strength when the surrounding air temperature is below 20 °F (-6 °C).

(f) Installation.

(1) Install members without damage to structural capacity, shape, or finish.

Replace or repair damaged members.

(2) Install members level and plumb without exceeding the…