Attach J-3 Rock Creek Trail Bridge_580-3.0_FSSS_Q0098.pdf

FOREST SERVICE

SUPPLEMENTAL SPECIFICATIONS

For

ROCK CREEK TRAIL BRIDGE REPLACEMENT

NO. 580 MP 3.0

U.S.D.A. FOREST SERVICE

BITTERROOT NATIONAL FOREST

Prepared by:

January 2019

ATTACHMENT J-3: Rock Creek Trail Bridge_580-3.0_FSSS

RFQ 12034320Q0098

Table of Contents 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

153 - Contractor Quality Control

155 - Schedules for Construction Contracts

156 - Public Traffic

157 - Soil Erosion and Sediment Control

203 - Removal of Structures and Obstructions

210 – Trail Work

601 – Minor Concrete Structures

720 – Structural Wall and Stabilized Embankment Material

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_11_9_2016

Add the following paragraph to Subsection 101.01:

101.01 Meaning of Terms.

Delete all references to the TAR (Transportation Acquisition Regulations) in the specifications.

101.03_Forest_11_30_2018

Add the following to Subsection 101.03:

101.03 Abbreviations.

(a) Acronyms.

AFPA

AGAR

EPA

FSAR

MSHA

NIST

NESC

WCLIB

American Forest and Paper Association Agriculture Acquisition Regulations Environmental Protection Agency Forest Service Acquisition Regulations Mine Safety and Health Administration National Institute of Standards and Technology National Electrical Safety Code West Coast Lumber Inspection Bureau

(e) Miscellaneous abbreviations.

AC

AL

CLEAR(CLG)

CLEAR/GRUB

CMP

CSP

CY(CU YD)

DIA

DWGS

EA

EMB

EXC

F&I

GAL

and acre aluminum centerline clearing clearing and grubbing corrugated metal pipe corrugated steel pipe cubic yard diameter drawings each embankment excavation furnish & install gallon area mass

GRD

HDPE

HORIZ

HR

HT

I

INCL

IND

JCT

L

LF (LIN FT)

LS

LT

MAT’L

MAX

MGALS

MTHD

MIN

MISC

MP

MSF

OTBC

PM

PVC

RD

RECOND

RECONST

REFL

RT

RT

STMP (STP)

SB

SEC

SL

ST

STA

STA YD

STL

STR (STRUC)

T&L

TM

TO

TOL

grade high density polyethylene horizontal hour height install including (includes) individual junction logs linear (lineal) foot lump sum left material maximum one thousand gallons method minimum miscellaneous milepost one thousand square feet open top box culvert placement method parts per million polyvinylchloride road reconditioning reconstruction (reconstruct) reflectorized right stump(s) self-balance section single lane slash treatment station station yard steel structure tops and limbs ton mile turnout turnout left time distance mass location volume volume distance

TOR

VERT

W W/ W/O

X-SEC

turnout right vertical width with without cross section

101.04_National_11_9_2016

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_Forest_11_30_2018

Add the following to Subsection 104.05:

104.05 Load Restrictions.

On Forest Service roads bridge overload permits are required for any vehicle which exceeds the maximum allowable gross vehicle weight of 80,000 pounds; if axle weight limitations dictated by the

Bridge Formula result in a lower gross vehicle weight; if single axle loads exceed 20,000 pounds or tandem axle loads exceed 34,000 pounds; if the vehicle exceeds the posted load limits for the bridge.

The Bridge Formula can be found in Forest Service Handbook 7709.56b – TRANSPORTATION

STURCTURES HANDBOOK, CHAPTER 90 – ROAD BRIDGE OPERATION.92 – BRIDGE MANAGEMENT.

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

Add the following to Subsection 105.02:

105.02_Forest_10_31_2018

105.02 Material sources.

Gabion Rock – Contractor‐located source – There is no available Government‐provided source for gabion rock for this project.

Trail Embankment – Contractor‐located source – There is no available Government‐provided source for trail embankment for this project.

Waste Area – Government‐provided source – designated by the CO within 1500 feet of the project site.

These waste sites are to be used for disposal of unsuitable or excess material only. All other materials designated for removal and disposal must be disposed of off National Forest System Lands according to Section 203.05.

105.02_National_7_10_2017

Add the following to Subsection 105.02 (a):

105.02 (a) Government‐provided sources.

Complete any pit or quarry development specified for a designated source, even when material is not obtained from the source.

105.02_Forest_10_31_2018

Add the following to Subsection 105.02(c):

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 free of noxious weeds as listed on the “All States Noxious Weeds List”. 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 7 days prior to use. Written approval of the specific source will be provided to the contractor. If weed species are present in

106 ‐ Acceptance of Work

106.01_National_7_18_2017

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 more strict.

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 will be allowed only as specified in the approved project permits.

107.05_National_11_9_2016

Delete Subsection 107.05.

107.05 Responsibility for Damage Claims.

107.10_Forest_7_18_2017

In Subsection 107.10(a)(1) replace the first sentence with the following:

107.10(a)(1) Federal Water Pollution Control Act (Clean Water Act) 33 USC § 1251 et seq.

Do not operate equipment within the boundaries of wetlands and waters of the United States unless otherwise approved by the CO, or discharge material within the boundaries of wetlands and the waters of the United States as defined by the federal and state regulatory agencies.

107.10_Forest_10_1_2018

Add the following to Subsection 107.10(b):

107.10(b) Oil and hazardous substances.

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. Refuel and store petroleum products outside of Riparian Conservation Areas (RCA).

Immediately notify the CO to report hazardous material spills. Reportable quantities are:

(a) Petroleum products – more than 25 gallons;

(b) Pesticide products – more than 5 gallons concentrated or mixed;

(c) Spills on water – all chemical/petroleum spills that have entered or threaten to enter water bodies;

(d) Provide a written narrative report form no later than 24 hours after the initial report and include the following:

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

(2) Whether amount spilled is EPA or state reportable, and if so whether it was reported, and to whom;

(3) Exact time and location of spill including a description of the area involved;

(4) Containment procedures;

(5) Summary of any communications the Contractor had with news media, Federal, state and local regulatory agencies and officials, or Forest Service officials;

(6) 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 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

Description

151.01_Forest_11_30_2018

Add the following to Subsection 151.01:

151.01

Preparatory work shall include cleaning of all equipment before entering National Forest System Lands.

The contractor is required to clean all construction equipment prior to entry on National Forest System

Lands. This cleaning shall remove all dirt, plant parts and material that may carry noxious weed seeds into the area. Only construction equipment inspected by the Contracting Officer will be allowed to operate within National Forest System Lands. All subsequent move‐ins of equipment shall be treated the same as the initial move‐in. Truck beds and dump boxes hauling to the project site must also be cleaned prior to entering the work area.

Prior to initial move‐in, the Contractor shall make all construction equipment available for inspection by the Contracting Officer at an agreed upon location. The Contractor shall provide the Contracting Officer at least 72 hours advance notification when equipment is ready for inspection.

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.

Add the following to the end of Subsection 153.04(a)(2):

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(c)

2 151 Contractor Quality Control Plan Plan 153.02

3 151 Traffic Control Plan Plan FSSS 156.03

4 157 Soil Erosion and Sediment Control Plan

Plan FSSS 157.04 Drawings

5 203 Demolition Plan Plan FSSS 203

6 253 Gabion Basket Material Material

Certification 106 720.02

7 555 Steel Structures: Hardware Material

Certification

8 557 Timber Structures Shop Drawings 104.03 557, Drawings

9 557 Timber Structures: Materials Material

Certification 557.20

106, 716, Drawings

Timber Structures: Treatment Information

Preservative used, penetration, retension & BMP

557.20 716

11 601 Minor Concrete Structures Material

Certification FSSS 601 Drawings

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.

155 ‐ Schedules for Construction Contracts 155.00_National_11_9_2016

Delete Section 155 in its entirety.

Delete Section 155.

156 ‐ Public Traffic

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

156.00_National_11_4_2016

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 30 minutes at any one time followed by an open period of no less than 10 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. Trail 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

Trail

Number

From

Terminus

To

Terminus

Maximum Consecutive Days of Closure

Minimum Consecutive

Days Open

580 Trailhead at MP 3.0 28 N/A

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 a Dewatering Plan along with a Soil Erosion and Pollution Control Plan detailing permanent and temporary control measures to minimize erosion and sedimentation during and after construction in accordance with the plans. 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 Dewatering Plan and Soil Erosion and Pollution 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. The following pollution prevention measures are a requirement for endangered species protection:

i. All equipment will be inspected for leaks prior to commencing work each day and any identified problems corrected before equipment is allowed to operate.

ii. Fueling, maintenance and staging of equipment will occur in designated areas away from water bodies.

iii. A spill containment kit will be available onsite at all times during construction, and proper notification procures will be in place in the event of a hazardous release.

iv. Absorbent pads will be placed beneath fuel tanks during fueling and maintenance. Pads will also be placed under any pumps while operating.

(d) For work in stream channels with running water a detailed dewatering plan is required. The following dewatering, fish salvage, and turbidity control measures are a requirement for endangered species protection:

i. All instream work must be completed during the designated instream fisheries work window.

ii. The Contracting Officer shall be notified at least 72 hours in advance of commencing dewatering and re‐watering activities.

iii. The Contractor shall coordinate and participate in the fish salvage operations in cooperation with the Contracting Officer’s fisheries biologist(s). The Contracting Officer will provide fisheries biologists and capture equipment to lead the fish salvage effort.

The Contractor shall provide pumps, equipment, labor and resources during the fish salvage operations to ensure fish passage and flow conditions per the Drawings and specifications.

iv. Work area isolation and fish capture activities will occur during periods of the coolest air and water temperatures possible, normally early in the morning, and during conditions appropriate to minimize mortality for the species present. Electrofishing during cooler water temperatures would reduce the stress levels of salmonids.

v. Flows will be completely diverted around the instream work site through a combination of pumping and/or pre‐approved, alternative methods and returned to the channel below the project area. Pump screen openings shall not exceed 3/32 or 0.0938 inches

(2.38 mm). If the diversion inlet is not screened, the diversion outlet will be placed in a location that facilitates safe reentry of fish into the stream channel.

vi. Flow diversion structures will be constructed with sand bags covered with plastic sheeting. Cofferdams, portable bladder dams, or other technologies constructed of non‐ erodible material may also be used to contain stream flow.

vii. Once channel rehabilitation is complete, the streambed will be washed and sediment‐ laden water within the isolation area should be pumped to the forest floor and not allowed to return to the stream. Once the isolated streambed is washed, water will be slowly released back into the channel to minimize sediment suspension, reaching full streamflow over a period of at least one hour.

(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.

In‐stream turbidity must be measured and monitored ensure compliance with the Idaho Department of

Environmental Quality (IDEQ) water quality standards for the project duration. Prior to beginning work, measure and document the turbidity levels in the stream to establish background levels in

Nephelometric Turbidity Units (NTU). Submit documentation to the CO.

Monitor turbidity and document compliance with Idaho water quality standards during the project.

Idaho water quality standards require that turbidity “shall not exceed background turbidity by more than fifty (50) NTU instantaneously or more than twenty‐five (25) NTU for more than ten (10) consecutive days” (IDAPA 58.01.02.250.02.e). If turbidity levels downstream of the point of discharge exceed background levels by more than allowed, the Contractor must stop work and immediately take measures to reduce turbidity before continuing. Methods to reduce turbidity may include, but are not limited to the following:

(a) Stop work until turbidity is below 50 NTU,

(b) Use non‐erodible diversions,

(c) Employ Sump pump(s) for seepage,

(d) Wet substrate before re‐watering,

(e) Repeatedly wash substrate,

(f) Re‐water slowly (over several hours to days),

(g) Use sediment traps (detention basin, straw bales, sedimat)

Do not continue work until in‐stream turbidity is in compliance with IDEQ water quality standards.

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.

Add the following:

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

203 ‐ Removal of Structures and Obstructions

203.04 Removing Material. Add the following:

Before beginning work, submit a Demolition Plan to the CO for review. Do no begin demolition work before receiving approval of the proposed plan.

As a minimum the plan should include the following:

1. Tools to be used.

2. Method of removal of log stringers

3. Plan for working within the specified stream restrictions

4. Method of disposal of non‐salvaged materials

203.05 Disposing of Material.

Modify this subsection as follows:

(a) Remove 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.

210 – Trail Work

Description

210.01 Work. This work consists of constructing trail bridge approaches, including excavation and embankment. Includes excavation, embankment, and backfill construction required to shape and finish the trailbed, backslopes and fill slopes. Use all suitable material salvaged from the excavation meeting

Subsection 704.04, Unclassified Borrow for embankment construction and backfill.

Materials

210.02 Conform to the following Subsections:

Unclassified Borrow 704.04

Construction Requirements

210.03 Trail Approach Excavation and Embankment. Minor deviations in vertical alignment will be permitted 10 feet from either end of the bridge as long as the transition from the end of the bridge is smooth and approved by the CO. Such adjustments shall not be considered as changes.

Conserve and use all suitable material for specified work. Conserve excess excavated rock suitable for specified project work and use in place of materials from designated sources.

Remove all duff and debris from within trailway limits and uniformly spread outside the clearing limits, not more than 4 inches in depth (unless otherwise SHOWN ON THE PLANS). Do not obstruct drainage from the trail surface.

Place excess and unsuitable excavation beyond the downslope edge of the trailbed. Do not obstruct drainage and spread to a depth not exceeding 4 inches. This includes any material removed in the grubbing operation and deposited in the same area.

Place rocks over 4 inches in greatest dimension not used in construction beyond the hinge point on the downslope side. Place rocks so that the tops are at least 6 inches lower than the trailbed surface. Ensure that no blockage of drainage or creation of a windrow effect occurs.

210.05 Trailway Excavation and Embankment. Construct embankments with suitable compacted material. Fill holes, and cut high points to provide a uniform trailbed finish. Compact all disturbed soil within the trailbed area.

Remove any rock within or above the backslopes that is unstable. Use or dispose of rock in accordance with Subsection 203.03.

Leave the finished slope in a uniform and roughened condition.

210.06 Compaction. Place material in horizontal layers not exceeding 6 inches prior to compaction except when the material contains rock more than 4 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 a moisture content suitable for compaction. Operate compaction equipment over the full width of each layer until visible deformation of the layer ceases.

210.07 Trailbed Finish. Fill holes with suitable material, compact, and cut high points to provide a uniform trailbed finish.

Measurement

210.08 Measure the Section 210 items listed in the bid schedule according to Subsection 109.02.

Payment

210.09 The accepted quantities will be paid at the contract price per unit of measurement for the

Section 210 pay item listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

601 – Minor Concrete Structures

601.03 Concrete Composition. Delete this subsection and substitute the following:

Make the concrete using a dry, pre‐proportioned, blended, and bagged mix meeting the requirements of ASTM C387 and mix on the jobsite in accordance with the manufacturer’s recommendations.

Submit for approval the manufacturer’s technical data a minimum of 14 days prior to packing the material into site.

601.05 Placing Concrete. Add the following:

Concrete may be rodded instead of internally vibrated as necessary to remove voids.

720 – Structural Wall and Stabilized Embankment Material

720.02 Gabion and Revet Mattress Material. Delete this subsection and substitute the following:

Fabricate gabion baskets 12 inches or greater in vertical dimension from welded wire mesh only.

(a) Welded wire mesh ASTM A974