Boulder FSSS.doc

BOULDER CREEK CULVERT

(Rd. No. 860 - M.P. 0.1) Kootenai National Forest

Rexford Ranger District

Lincoln County, Montana

FOREST SERVICE SUPPLEMENTAL SPECIFICATIONS

Table of Contents

1Preface

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 155 – Schedules For Construction Contracts 156 - Public Traffic 157 - Soil Erosion Control 203 – Removal of Structures and Obstructions 208 - Structure Excavation And Backfill For Selected Major Structures 251 - Riprap

272 - GEOCELL ABUTMENT STABILIZATION…………………………………….23

301 - Untreated Aggregate Courses 553A – Precast Concrete Structures

603 – STRUCTURAL PLATE STRUCTURES

622 - Rental Equipment 625 - Turf Establishment 703 - Aggregate 725 - Miscellaneous Material

Preface

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-03 for construction of National Forest System Roads.

101 - Terms, Format, and Definitions

101.01 Meaning of Terms.

Add the following:

Delete all references in FP-03 to Transportation Acquisition Regulations (TAR).

101.03 Abbreviations.

Add the following to (a) Acronyms:

AFPA

MSHA

NIST

NESC

WCLIB

American Forest and Paper Association Mine Safety and Health Administration National Institute of Standards and Technology National Electrical Safety Code West Coast Lumber Inspection Bureau

Add the following to (b) SI Symbols:

101.04 Definitions.

Delete the following definitions and substitute the following:

Bid Schedule--The Schedule of Items.

Bridge--No definition.

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--No definition.

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.

Add the following:

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.

Design Quantity--“Design quantity” is a Forest Service method of measurement from the FS-96 Forest Service Specifications for the Construction of Roads and Bridges. Under these FP specifications this term is replaced by the term “Contract Quantities”.

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.

Schedule of Items--A schedule in the contract that contains a listing and description of construction items, quantities, units of measure, unit price, and amount.

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 Bid, Award, and Execution of Contract

Delete Section 102 in its entirety.

103 - Scope of Work Deletions

Delete all but subsection 103.01 Intent of Contract.

The project consists of the removal of an existing culvert and the construction of a new 16’ span by 8’-4” rise steel structural plate arch culvert. The culvert is located on Forest Service Road No 860, milepost 0.1, at the Boulder Creek stream crossing. Improvements consist of, but are not limited to, structural excavation, excavation and reshaping of the channel, placement of in-stream grade control structures, placement of riprap, installation of precast concrete footings with stemwalls, installation of culvert structure, roadway embankment construction, and road surfacing.

The project is located on the Rexford Ranger District of the Kootenai National Forest. Refer to the location map on the title sheet of the plans.

104 - Control of Work Deletions

Delete sections 104.01, 104.02, and 104.04.

Add the following subsection:

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 Material Sources.

Add the following before the first paragraph.

Sources have been designated for this project as follows:

Riprap Source – Contractor Furnished

Aggregate Surface Source – Contractor Furnished.

Coarse Granular Backfill – Contractor Furnished.

Under (b) Contractor-located sources add the following:

Prior to any pit development or use of materials, the pit site shall be approved by the CO that the pit site is free of noxious weed as listed on the "All States Noxious Weeds List”.

106 - Acceptance of Work

106.01 Conformity with Contract Requirements.

Delete Subsection 106.01 and substitute the following:

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 and replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted, 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.

106.07 Delete

Delete subsection 106.07.

107 - Legal Relations and Responsibility To The Public

107.05 Responsibility for Damage Claims.

Delete the entire subsection.

107.06 Contractor’s Responsibility for Work.

Delete the following.

“except as provided in Subsection 106.07”

107.09 Legal Relationship of the Parties.

Delete the entire subsection:

108 - Prosecution and Progress 108 Delete

Delete Section 108 in its entirety.

109 - Measurement and Payment Delete the following entire subsections:

109.06 Pricing of Adjustments.

109.07 Eliminated Work.

109.08 Progress Payments.

109.09 Final Payment.

Add the following Subsection:

109.10 Methods of Measurement

One of the following methods of measurement for determining final payment is DESIGNATED IN THE SCHEDULE OF ITEMS for each PAY ITEM:

(a) Designed Quantities (DQ). These quantities denote the final number of units to be paid for under the terms of the contract. They are based upon the original design data available prior to advertising the project. Original design data include the preliminary survey information, design assumptions, calculations, drawings, and the presentation in the contract. Changes in the number of units DESIGNATED IN THE SCHEDULE OF ITEMS may be authorized under any of the following conditions:

(1) Changes in the work authorized by the CO.

(2) A determination by the CO that errors exist in the original design that cause a PAY ITEM quantity to change by 15 percent or more.

(3) A written request submitted to the CO showing evidence of errors in the original design that cause the quantity of a PAY ITEM to change by 15 percent or more. The evidence must be verifiable and consist of calculations, drawings, or other data that show how the designed quantity is in error.

(b) Stake Quantities (SQ). These quantities are determined from staked measurements prior to construction.

(c) Actual Quantities (AQ). These quantities are determined from measurements of completed work.

(d) Vehicle Quantities (VQ). These quantities are measured or weighed in hauling vehicles.

(e) Lump Sum Quantities (LSQ). These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job.

151 - Mobilization

151.01 Description

Add the following requirements:

Noxious Weed Control Requirements:

All construction equipment to be used at the job site shall be cleaned and certified free of noxious weeds and their seeds prior to entrance on to forest lands, whether they are owned, leased or borrowed by the Contractor or any subcontractors. “Construction equipment” does not include personal vehicles or support equipment that remains on the main travel route.

Cleaning shall occur off forest land.

Construction equipment shall be visually inspected by the COR and each one certified in writing to be reasonably clean and weed free. Inspections will take place at a forest administrative site with the Contractor providing at least 24 hours notice. The location of the administrative site is to be agreed upon in advance between the COR and the Contractor or Subcontractor. Equipment is expected to proceed directly to the job site following the inspection and to not leave the designated weed management district wherein the job site exists.

Certification shall remain valid for each identified piece of equipment for the duration of the specified project and only as long as the equipment remains at the job site or within the designated weed management district. Equipment leaving the designated weed management district will need to be recertified as weed free before being allowed to return to the job site.

151.03 Payment

Add the following:

Include all costs associated with the cleaning of equipment in the unit price for Mobilization.

152 – Construction Survey And Staking

152.03 Survey and Staking Requirements.

Add the following:

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

155 – Schedules For Construction Contracts 155 Delete

Delete Section 155 in its entirety.

156 - Public Traffic

156.03 Accommodating Traffic During Work.

Delete the following from the last paragraph:

According to Subsection 106.07(b)

Add the following:

The Contractor will be allowed to close Road No. 860 to through traffic for duration of construction. It is the responsibility of the Contractor to schedule delivery of materials, equipment and all necessary supplies to the site, to ensure that the culvert can be substantially completed within the specified contract time. The Contractor shall give the CO at least two weeks advanced written notice prior to any road closure. The Contractor shall be responsible for providing, installing, maintaining, and removing warning signs and type 3 barricades required for the road closure period.

Contractor shall provide and install one road closed ahead sign for the duration of the project. .

156.08 Traffic and Safety Supervisor.

Delete this subsection in its entirety.

157 - Soil Erosion Control

157.02 Materials.

Add the following:

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

157.03 General.

Add the following:

Prior to the start of construction, submit a written plan for review that provides permanent and temporary erosion control measures to minimize erosion and sedimentation during and after construction. Include methods to minimize disturbance to the stream and prevent runoff from the construction site entering directly into the stream. The “Soil Erosion Control Plan” must address construction activities that have the potential for stream sedimentation.

Prior to the start of construction, submit a written stream diversion plan that outlines the methods and location to divert the stream around the work area.

203 – Removal of Structures and Obstructions

203.01 Delete and replace with the following:

This work consists of disposing of clearing slash, salvaging, removing and disposing of buildings, fences, structures, pavements, culverts, utilities, curbs, sidewalks, and other obstructions.

203.05 Disposing of Material.

Modify this subsection as follows:

(a) Remove from project. Delete the 2nd and 3rd sentences and add the following:

All materials designated for removal become 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.

(e) Placing Slash on Embankment Slopes. Place construction slash, under 1 inch in diameter, on completed embankment slopes or scatter as directed by the CO to reduce soil erosion. Place construction slash as flat as practicable on the completed slope. Do not place slash on embankment slopes closer than 2 feet, slope distance, from the road surface. Priority for use of available slash is for: (1) through fills; (2) insides of curves; and (3) ditch relief outlets. All slash material over 1 inches in diameter shall be disposed off forest lands or as per directed by the CO.

208 - Structure Excavation And Backfill For Selected Major Structures

208.04 General.

Add the following:

Use all suitable material for structural backfill. Field drain and dry excessively wet material that is otherwise suitable for embankment before placement. Place and shape unsuitable or excess material in the designated sites or as directed by the CO.

251 - Riprap

251.01 Description.

Replace with the following:

This work consists of furnishing and placing riprap for bank protection, slope protection, drainage structures, erosion control, and grade control structures.

251.07 Acceptance.

Delete reference to Table 251-1.

Delete the fourth sentence and add the following:

Structure excavation and backfill will be evaluated under section 208.

Delete Table 251-1.

251.10 Grade Control Structure.

Furnish rock from the commercial riprap source at the size shown in the grade control structure details. Placement of grade control structures shall be under pay item 622, Equipment Rental at direction of the CO.

272 - Geocell Abutment Stabilization

272.00_01_us_10_11_2006

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, Type II (A, B, C)

714.01

Geocell

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.

308 – MINOR CRUSHED AGGREGATE

Delete section 308 in its entirety and replace with the following:

Description

308.01 This work consists of placing Government furnished aggregate or furnishing and placing crushed aggregate for bedding, backfill and roadway aggregate course.

Material

308.02 Conform to the following Subsections:

Crushed aggregate

703.06

Water

725.01 Construction Requirements

308.03 Preparing Surface. Prepare the roadway surface on which aggregate course is placed as shown on the plans.

308.04 Placing Crushed Aggregate.

(a) Roadway aggregate. Mix the aggregate and adjust the moisture content to obtain a uniform mixture with a moisture content suitable for compaction. Spread and shape the mixture on the prepared surface in a uniform layer.

Do not place the mixture in a layer exceeding 6 inches in compacted thickness. When more than one layer is necessary, compact each layer according to Subsection 308.05(a) before placing the next layer.

(b) Bedding and backfill aggregate. Place and shape the mixture in layers that, when compacted, do not exceed 6 inches in depth.

308.05 Compacting and Finishing Crushed Aggregate.

(a) Roadway aggregate. Compact using the methods below, specified in the Schedule of Items.

(1) Method 1. Operate equipment over the full width of spread aggregate.

(2) Method 2. Compact the aggregate by operating compaction equipment over the total width until visible deformation ceases. A minimum of three complete roller passes shall be made at a moisture content suitable for compaction.

(b) Bedding and backfill aggregate. Compact in 6 inch lifts by using a Forest Service approved mechanical compactor until no visible deformation is observed over the entire area of aggregate.

308.06 Acceptance. Crushed aggregate will be evaluated under Subsections 106.02 and 106.03. Furnish a production certification including gradation and quality properties for each source.

Construction of roadway aggregate courses will be evaluated under Subsections 106.02 and 106.04. Method 2 compaction will be evaluated under Section 106.04.

Placement of bedding and backfill aggregate will be evaluated under Subsection 106.02 and Section 209.

Preparation of the surfaces on which crushed aggregate is placed will be evaluated under Section 303 and 209 as applicable.

Measurement

308.07 Measure the Section 308 items listed in the bid schedule according to Subsection 109.02 and the following as applicable.

Measure crushed aggregate by the cubic yard in-place on the road.

Measure width horizontally to include the top of aggregate width including designed widenings. Measure the length horizontally along the centerline of the roadway.

Payment

308.08 The accepted quantities will be paid at the contract price per unit of measurement for the Section 308 pay item listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

553A – Precast Concrete Structures Description

553A.01 Work. Construct precast concrete members. In addition, manufacture, test materials for, transport, store, and install all precast concrete portions except piling, and perform all necessary grouting, welding, or other connections. Furnish precast concrete members complete and in place, including all concrete reinforcing steel and incidentals connected therewith.

Materials

553A.02 Requirements. Provide materials that meet the requirements specified in the following subsections:

High-Strength Nonshrink Grout ……………………………… 725.40

Mortar ………………………………………………………… 725.40

Reinforcing Steel ……………………………………………… 709.01

Sealants, Fillers, Seals, & Sleeves …………………………….. 712.01

Structural Concrete ……………………………………………. 552

Structural Steel ………………………………………………… 717.01

Provide precast concrete members of the size, shape, strength, air content, and finish that are SHOWN ON THE DRAWINGS.

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.

Construction

553A.03 Performance. Construct precast concrete structural members in accordance with the following sections and subsections, as applicable:

Reinforcing Steel ………………………………………………... 554

Storing, Transporting, & Erecting ………………………………. 553.08

Structural Concrete ……………………………………………… 552

Submit four sets of shop drawings to the CO for approval, including the concrete mix design for each class of concrete proposed for use, a minimum of 21 days before fabrication of the precast member(s).

553A.04 Casting Yard. The precasting of concrete structural members may be done at a casting yard location selected by the Contractor.

553A.05 Handling, Transporting, & Erecting. Provide additional reinforcement, as needed, to meet the requirements of handling, transporting, and erecting precast members.

553A.06 Acceptance. Reinforcing steel, anchor devices, elastomeric bearings, and material for concrete and grout will be evaluated under Subsection 106.03. Furnish production certifications for hydraulic cement, and reinforcing steel.

Concrete for precast concrete members will be evaluated under Subsections 106.02, 106.03, and 106.04.

Construction of precast concrete members will be evaluated under Subsections 106.02 and 106.04.

Reinforcing steel will be evaluated under Section 554.

Falsework and forms will be evaluated under Section 562.

Measurement

553A.07 Measure the Section 553A items listed in the bid schedule according to Subsection 109.02 and the following as applicable.

Do not measure reinforcing steel, concrete, anchorages, plates, nuts, and other material contained within or attached to the unit for precast concrete structural members.

Payment

553A.08 The accepted quantities will be paid at the contract price per unit of measurement for the Section 553A pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05.

603 – STRUCTURAL PLATE STRUCTURES

603.03 General.

Delete the first sentence and add the following:

Excavation and backfill will be evaluated under Section 208.

603.05 Acceptance.

Delete the third sentence and add the following:

Excavation and backfill will be evaluated under Section 208.

622 - Rental Equipment

622.02 Rental Equipment.

Delete the first two sentences of the first paragraph and add the following:

Hydraulic Excavator. Provide a track mounted hydraulic excavator, 15 years or newer. Bucket must be equipped with a hydraulic "thumb". Contractor shall supply an excavator of a size capable of performing the excavation needs for the project, i.e. structure excavation, riprap construction, in-stream structures, etc., or other work that may be directed under this section. Contractor is required to get approval of the size of the Hydraulic Excavator from the Contracting Officer prior to any work taking place.

Large Dump Truck. Provide a large dump truck with a minimum capacity of 10 cubic yards, 1990 model year or newer. Contractor is required to get approval of the size of the Dump Truck from the Contracting Officer prior to any work taking place.

Motor Grader. Provide a motor grader with a maximum age of 20 years. Grader must have a minimum 125 horsepower and a minimum operating weight of 26,000 pounds with enclosed cab, tandem drive and a hydraulic shift moldboard 12' minimum width.

625 - Turf Establishment

625.03 General.

Delete the first sentence and add the following:

Apply turf establishment to portions of slopes, ditches, waste areas, and other disturbed areas within 14 days after being constructed to template lines unless otherwise specified in writing by the C.O..

625.04 Preparing Seedbed.

Delete the second sentence of the first paragraph.

Delete the third paragraph.

625.05 Watering

Delete the entire paragraph.

625.06 Fertilizing.

Delete the entire subsection and add the following.

Apply fertilizer having a chemical analysis as listed in (c) below by the following methods. Apply seed and fertilizer in one application.

(a) Dry Method. Apply the fertilizer with approved power driven seeders, drills, fertilizer spreaders or other mechanical equipment. Hand operated methods are satisfactory on areas inaccessible to mechanical equipment.

(b) Hydraulic method. Use hydraulic-type equipment capable of providing a uniform application using water as the carrying agent. Add fertilizer to the slurry and mix before adding seed.

(c) Chemical analysis. Apply fertilizer at the rate of 240 pounds per acre. Apply fertilizer having the following chemical analysis.

Nutrient Percent

Nitrogen, N

Phosphorus, P2O5

Potassium, K

Fertilizer having a different chemical analysis may be used if approved in advance by the CO.

625.07 Seeding.

Delete the first sentence and add the following.

Apply seed mix shown in (c) below by the following methods.

(a) Dry method.

Delete the third sentence.

Add the following after subsection (b).

(c) Seed Mix. In terms of pure live seed, furnish and apply the following kinds and amounts of seed. Obtain the pounds of seed to furnish per acre by dividing the pounds of pure live seed required per acre by the product of the percent purity and percent germination.

Example:

5 lbs Pure Live Seed/Acre = 6.55 lbs Commercial Seed/Acre

0.90 X 0.85 (Purity = 90% and Germination = 85%)

Kind of Seed Quantity of Pure Live Seed

(Lbs/Acre)

1. Annual Rye

2. Hard Fescue

3. Orchard Grass

Total

625.08 Mulching.

(b) Hydraulic method.

Delete the first sentence and add the following.

Apply mulch in a separate application from the seed or in a single application with the seed using hydraulic-type equipment according to Subsection 625.07(b).

625.09 Protecting and Caring for Seeded Areas.

Delete the first sentence and add the following.

Protect and care for seeded areas until final acceptance.

625.11 Measurement

Delete the second paragraph and add the following.

Measure seeding, fertilizing, and mulching by the acre on the ground surface or by lump sum.

703 - Aggregate

703.03 Granular Backfill.

Add the following:

(c) Course Granular Backfill.

Furnish backfill material that consists of clean, hard durable particles or fragments of crushed stone, crushed slag or crushed gravel meeting the gradation shown below.

Sieve Size

Percent Passing

1 inch

3/4 inch

75 to 100

No. 4

0 to 60

No. 40

0 to 50

No. 200

0 to 5

703.05 Subbase, Base, and Surface Course Aggregate.

Delete this subsection and add the following.

725 - Miscellaneous Material Add the following section:

725.40 High-Strength Nonshrink Grout.

Furnish grout that is packaged and ready for use with the addition of water at the construction site. Ensure that each bag is stamped to show the last date on which it may be used. Use grout that consists of a hydraulic cementitious system, graded and processed natural fine aggregate, and additional technical components such that the product meets the following conditions:

(a) Free of inorganic accelerators, including chlorides.

(b) Free of oxidizing catalysts.

(c) Free of gas-producing agents.

(d) When mixed to 130 percent flow on flow table (ASTM C 230 at 10 drops), it does not reduce in linear dimension when tested in accordance with ASTM C157. Take measurements at 72 hours and 7 days.

(e) Produces no bleeding for the first 2 hours after mixing when mixed to 130 percent flow on flow table (ASTM C 230 at 10 drops), as tested in accordance with ASTM C232.

(f) Has a minimum strength as follows when tested in accordance with ASTM C 109:

(1) After 72 hours, 25 MPa (3500 psi).

(2) At 7 days, 40 MPa (6000 psi).

(3) After 28 days, 50 MPa (7200 psi).

Provide performance characteristics at 115 to 120 percent flow on flow table (ASTM C 230 at 10 drops).

(g) It must be designed, as stated by the manufacturer, to be mixed, placed, and cured at atmospheric temperatures of 5O C to 30O C (40O F to 85O F). Submit products proposed for use for approval by the CO and accompany them with manufacturer’s submittals substantiating all requirements in this subsection, including graphs or charts showing the time, temperature, and humidity requirements for curing to achieve the specified grout strengths; and recommendations for storage, mixing, application, and curing procedures.

As specified as grout on the contract plans, the following products meet the above requirements.

1. MASTERFLOW 928 GROUT, manufactured by Chemrex.

2. CRYSTEX GROUT, manufactured by L&M Construction Chemicals, Inc.

3. CEMENT ALL, manufactured by CTS Cement Manufacturing Co.

4. SURE-GRIP HIGH PERFORMANCE GROUT manufactured by Dayton Superior.

725.41 Mortar.

Furnish mortar that is packaged and ready for use with the addition of water at the construction site. Ensure that each bag is stamped to show the latest date on which it may be used. Use mortar that consists of a cementitious system made up of:

(a) Natural aggregate, 3/8” maximum size, that meets the requirements specified in ASTM C 33 except for grading. Accomplish grading by blending sieve sizes to obtain the optimum density.

(b) Metallic aggregate free from nonferrous material, soluble alkaline compounds, and visible rust.

(c) Water reducers, workability agents, air-entraining agents, and catalysts.

Blend the materials to minimize bleeding, increase workability, resist exposure to freeze-thaw cycles and deicing salts, and prevent shrinkage within and at the perimeter of the patch, keyway, or other area to be filled.

Ensure that the minimum compressive strength of the mortar, as tested by ASTM C 109 for a 3” slump, is:

· 24-hour..........................................................................................35MPa (5000 psi)

· 7-day.............................................................................................60 MPa (8500 psi)

· 28-day........................................................................................70 MPa (10,000 psi)

Ensure that the durability of the products when tested at 300 cycles, ASTM C 666, procedure A is:

Submerged in: DF (%)

Water 98

5% CaCl2 solution 95

5% NaCL solution 85

Ensure that the scaling resistance has a rating of 3, Moderate Scaling, after 50 cycles when tested in accordance with ASTM C 672.

Provide certification from the manufacturer that the product is compatible for work that is 1” or more in depth and more than 1” in width; and where the mixing, placing, and curing temperatures may range from 5O C to 30O C (40O F to 85O F).

Submit products proposed for use to the CO for approval, and accompany them with the manufacturer’s submittals substantiating all requirements in this section, including (1) graphs or charts showing the time, temperature, humidity, and curing requirements to achieve mortar strengths equal to the adjacent concrete; and (2) complete recommendations for storage, mixing, application, and curing procedures.

As specified as mortar on the contract plans, the following products meet the above requirements.

1. EMACO T425 or T430, manufactured by Chemrex.

2. RAPID SET DOT REPAIR MIX manufactured by CTS Cement Manufacturing Co.

5. SURE-GRIP HIGH PERFORMANCE GROUT (when extended with pea gravel) manufactured by Dayton Superior.

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