Amendment_No._0001.pdf

Amendment 0001 Derby Diversion Dam - Replacement of Gates and Metalwork Washoe Project - Nevada Specifications No.20-C0870

Slide Gate And Operator Stem

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SECTION 35 22 24

SLIDE GATES, OPERATOR STEMS, AND PERIPHERAL EQUIPMENT

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. Inspection, Testing, and Repair:

1. Payment: Lump sum price offered in schedule for Inspection, Testing, and Repair.

a. Inspection, testing, and repair work includes: existing bulkhead plates, gate guides, rubber seats, gate leaves, and other items as stated within the specifications.

B. Removing Existing Equipment:

1. Payment: Lump sum price offered in schedule for Removing Existing Equipment.

C. Fabricating Gate Leaves, Operator Stems, Couplings, Stem Guide Brackets, and Lifting Bracket:

1. Payment: Lump sum price offered in schedule for Fabricating Gate Leaves, Operator Stems, and Couplings.

D. Furnishing Oilers, Split Stem Guide Bushings, Anti-Rotational Blocks, Upper and Lower Telescoping Bellows, and Drive Nuts:

1. Payment: Lump sum price offered in schedule for Peripheral Equipment

E. Re-assembling and Testing Gates.

1. Payment: Lump sum price offered in schedule for Re-assembling and Testing Gates.

1.02 DEFINITIONS

A. Bulkhead plates: Existing thick steel plates used to span between the upstream edges of adjacent piers and held in place by non-permanent anchors.

B. Gate Guides: Cast-iron channels shaped in a stepped fashion in each pier and in which slide the gate leaves. Guides are embedded in surrounding concrete and non-removable.

C. Sill: Timber board that was fit into a slot in the floor of the embedded metalwork and acted as a seal across the bottom. This was replaced by a rubber sill. For the contract, the word ‘sill’ refers to the rubber seat and peripheral equipment.

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D. Upper Gate Leaf: Cast-iron panel that slides down the guides until it rests on the stepped ledge of the embedded guides. The lower gate leaf is installed first. The assembly of the upper gate leaf and lower gate leaf is referred to as the slide gate.

E. Lower Gate Leaf: Cast-iron panel that slides down the guides until it rests on the sill.

Serves as attachment point for the operator stem. The upper gate leaf is installed second.

F. Drive Nut: ACME threaded nut that mounts within the actuator system and connects the gearbox to the operator stem. The drive nut is sized to accommodate the current operator stem.

G. Operator Stem: A circular stainless steel shaft that supports, lifts, and rotates the slide gate. The operator stem is supported by guides mounted on the gates and runs up through the actuator and the drive nut. The operator stem is threaded to allow lifting, lowering, and rotating of the slide gate via the drive nut. The operator stem will be split into two pieces, upper and lower sections, which will be joined by a coupling.

H. Stem Guide Bracket: A stainless steel bracket designed for the split stem guide bushing to be mounted to it. The stem guide bracket will be bolted to the upper gate leaf.

I. Split Stem Guide Bushing: A bronze, flanged split stem guide designed to support the stem from the top of the upper gate leaf.

J. Upper Bellows: Sewn round fabric bellows attached to the exposed part of the operator stem above the actuator to protect the stem from environmental wear.

K. Lower Bellows: Sewn round fabric bellows to cover the exposed operator stem from the bottom of the bridge deck to the top of the stem coupling.

L. Gate Numbering: River gates are numbered right to left looking downstream R1 through R6 to the right of the hinged weir gate, and R7 through R13 to the left of the hinged weir gate. Gates undergoing rehabilitation and replacement under these specifications are R10 and R11.

1.03 REFERENCE STANDARDS

A. American Society of Mechanical Engineers (ASME)

1. ASME B18.22.1 Plain Washers

B. ASTM International (ASTM)

1. ASTM A36 Standard Specification for Carbon Structural Steel

2. ASTM A276/A276M Standard Specification for Stainless Steel Bars and Shapes

3. ASTM A536 Standard Specification for Ductile Iron Casting

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4. ASTM D 572-99 Rubber Deterioration by Heat and Oxygen

5. ASTM D 395-03 Rubber Property -Compression Set

C. American Welding Society (AWS)

1. AWS D1.1 Structural Welding Code

D. NSF International (NSF)

1. NSF H1 General – Incidental Contact

1.04 SUBMITTALS

A. Submit the following in accordance with Section 01 33 00 – Submittals.

B. RSN 35 22 24-1, Inspection Results and Repair Plans:

1. Submit inspection results, drawings denoting damaged areas, repair plans, and other pertinent documentation as needed for:

a. Current conditions of gate guides.

1) Include drawings to show extent of corrosion damage, depth of corrosion, and type of corrosion.

b. Current condition of sills.

1) Include documentation comparing inspection results to items listed in paragraph 2.01 B.

c. Current condition of bulkheads.

1) Include documentation regarding integrity of existing bulkheads and seals.

d. Technical characteristics of operator stem.

1) Include documentation verifying material, thread designation, thread dimensions, and other pertinent information.

e. Technical characteristics for drive nut.

1) Include documentation verifying material, thread designation, thread dimensions, and other pertinent information.

C. RSN 35 22 24-2, Design Drawings:

1. Submit design drawings, documentation, and other pertinent approval data for:

a. Bulkhead modification.

b. Lifting bracket.

1) Include documentation describing setup and usage of bracket.

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c. Oiler.

1) Include documentation describing mounting and usage of oiler.

d. Upper bellows and riser attachment.

e. Lower bellows attachment.

f. Anti-rotational block

2. All design drawings must be reviewed and certified by a registered Professional Engineer.

D. RSN 35 22 24-3, Qualifications:

1. Submit contractor qualifications as per requirements specified in 1.05A.

2. Submit ductile iron foundry qualifications.

a. Qualifications must clearly state requirements as outlined in Paragraph 1.05.

E. RSN 35 22 24-4, Commercial Products Data:

1. Catalog sheets for appurtenant equipment:

a. Thread locking compound.

b. Waterproof grease.

c. Gasket sealant.

d. Operator drive nut.

e. Upper bellows.

f. Lower bellows.

g. Split stem guide bushing

2. Copy of certified materials test reports.

3. Commercial products data of all repair materials to be used, including applications instructions.

4. Manufacturer’s installation instructions.

F. RSN 35 22 24-5, Shop Drawings:

1. Show all dimensions (include tolerances), materials, weld points, weld sizes, and technical fabrication data for the following items:

a. Upper gate leaf.

b. Lower gate leaf.

c. Operator stem.

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d. Coupling.

e. Stem guide bracket.

f. Split stem guide bushing.

g. Anti-rotational block.

h. Lifting bracket.

i. Drive nut.

j. Bulkhead modification.

2. All welds must conform to AWS D1.1.

G. RSN 35 22 24-6, Installation Plan:

1. Develop and submit detailed step-by-step plan for installation of the following items:

a. Upper gate leaf.

b. Lower gate leaf.

c. Stem guide bracket.

d. Split stem guide bushing.

e. Anti-rotational block.

f. Operator stem.

g. Coupling.

h. Stem bellows.

i. Gear box.

j. Actuator.

k. Operator drive nut.

l. Bulkhead modification.

H. RSN 35 22 24-7, Bulkhead Removal Plan:

1. Develop and submit detailed step-by-step plan for removal of bulkheads currently installed on gate bays.

I. RSN 35 22 24-8, Slide Gate Testing Plan:

1. Develop and submit a testing plan to test the installed slide gates as per Section 35 22 24, paragraph 3.09.

J. RSN 35 22 24-9, Final Data:

1. Field Test Results:

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a. Operational tests.

b. Leakage rate.

1.05 QUALIFICATIONS

A. Contractor Qualifications:

1. Contractor must have at least 10 years of experience replacing and installing slide gates of similar size and complexity.

B. Ductile Cast Iron Foundry:

1. Foundry must be located within the United States.

2. Foundry must perform material testing for all casted items as directed per ASTM A536.

3. Foundry must be capable of storing both gate molds after use.

1.06 DELIVERY, STORAGE, AND HANDLING

A. Protect from corrosion, deformation, and other types of damage.

B. Block and support to prevent damage due to vibration, rubbing, or shifting during transit.

C. Box and transport small parts.

1.07 PROJECT CONDITIONS

A. Where paragraphs in this section are written in singular form it shall apply equally where more than one item is required. Apply paragraphs equally to each identical member, joint, or procedure.

B. Original design drawings listed in Section 52 00 00 - Drawings are included to show the original design, arrangement and installation of existing gates. For convenience, references to the informational drawings for gate features, and parts have been provided.

Every effort has been made to ensure accurate referencing of those informational drawings; however, references are not warranted to be accurate or complete in all instances. The current as-built gate dimensions are unknown, and the relevant dimension shall be measured by the Contractor to ensure correct fit of the replacement parts before commencement of fabrication of new parts.

C. The design of the slide gates were completed in 1905. The type of materials is not listed on informational drawings however it is expected that all cast-iron pieces are a gray cast iron.

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D. There are no grates along the operator deck to lift or lower the gates through. The gate leaves must be lowered into the guides, one at a time, without the use of the operator stem. The contractor must design and furnish a lifting bracket to install the gates.

E. The lower leaf nests into the upper leaf as the gates open. Once the gates are fully raised and out of the guides, the actuator drive nut can then be used to turn the assembly 90-degrees (parallel to water flow).

F. Access to the gates is from the north along a frontage road, through a gate, and over a box intake structure suitable to support crossing by any legal vehicle. Lifting items such as the bulkhead plates, gate operators, stems, and gate leaves from the north end of the dam will require a reach of approximately 80-feet by crane and an approximate 10,000 pound maximum lift. The Contractor shall verify reach and lift weight he needs for each pick.

G. The operator deck is suitable for foot traffic and loading by normal tools and some material; however, heavy loading by large equipment is not allowed. Existing motorized gate operator loading is as high as 15,000 pounds.

H. Bulkheads are currently installed. One bulkhead is 24 inches shorter than the other.

Majority of onsite work to be conducted downstream of Government furnished bulkheads. A water pump may be utilized to pump leakage downstream of work site.

I. Possible engulfment and other hazards in area of work. Adhere to pertinent safety standards when performing all activities.

PART 2 PRODUCTS

2.01 MATERIALS

A. Bulkhead:

1. Current bulkheads are 1-inch thick steel plates. One bulkhead is approximately 8-foot by 10-foot foot. The other is approximately 8-foot by 12-foot.

2. Bulkheads are assumed to be ASTM A36 mild steel.

3. Bulkheads are sealed along contact edges with foam neoprene seals.

B. Sill:

1. Current sill expected to meet the following salient characteristics:

a. Cross section is dense, homogeneous, and free from porosity and other imperfections.

b. Exterior surfaces of sill: Free from pits, blisters, and other imperfections that will impair sealing.

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c. Base rubber material for sill: Neoprene or natural rubber compounded and cured.

1) Rubber sill conforms to ASTM D 572-99 and 395-03.

d. Confirm all dimensions as shown on drawing: 320-D-327 320-208-60016.

2. Maximum variations in dimensions between cross sections of continuous seal strips: Rate of change of 1/16-inch in 24-inches of seal length. Measurements of cross sections need not be checked at intervals less than 6 inches apart.

C. Gasket Sealant (between seats and stem guide brackets):

1. Rector Seal No. 5, Rector Seal Corporation, 2830 Produce Road, Houston, TX 77021, 713-263-8001, or equal, with the following salient characteristics:

a. For use with cold potable water.

b. Does not contain metals.

c. Application: by brush between 30 and 120 degrees Fahrenheit.

d. Allows immediate pressurization of joint up to 100 pounds per square inch water.

e. Permits easy removal of fasteners with no damage to threads.

f. Lubricates and protects threads against corrosion.

D. Thread Locking Compound:

1. Threadlocker 242 as manufactured by Loctite Corporation, 1001 Trout Brook Crossing, Rocky Hill, CT 06067, 860-571-5100; or equal, having the following salient characteristics:

a. Suitable for threaded fasteners up to 1-inch diameter.

b. Anaerobic cure.

c. Removable.

d. Breakaway torque: 75 pound-feet, minimum.

e. Service temperature range: -50 to 120 degrees Fahrenheit.

f. Suitable for submerged service.

E. Waterproof Grease:

1. Black Pearl as manufactured by 9401 Williamsburg Plaza, Suite, 201 Louisville, KY 40222, 800-822-5823; or equal, having the following salient characteristics:

a. Resists washout.

b. Resists water spray.

c. Provides protection against wear, rust, and corrosion.

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d. Suitable for incidental contact with food, NSF rating: H1.

F. Split Stem Guide Bushing:

a. Materials: Bronze bushing, stainless steel screws and washers, and bronze nuts.

1) Washers must conform to ASME B18.22.1.

b. Split design that allows removing and replacing bushing without removing stem.

c. Mountable to a flat surface bracket as shown on drawings.

d. Suitable for restraining lateral movement of 2 1/2-inch diameter gate stem.

G. Operator Drive Nut:

1. Operator Drive Nut as manufactured by Rotork Controls Inc., 675 Mile Crossing Blvd., Rochester, NY 14624, or equal, having the following salient characteristics:

a. Suitable for gearbox C0026801-2, type B9, STD 70 specification, with a 4:1 gear ratio as manufactured by Rotork Controls Inc.

b. Suitable for operating a 2 1/2-inch diameter gate stem.

c. Dual start ACME threading must match existing.

d. Drive Nut must operate smoothly in both opening and closing directions.

H. Oil Dispenser

1. Solenoid-Operated Oil Dispenser with Needle Valve (MODEL 1070K27) as distributed by McMaster-Carr, or equal, having the following salient characteristics:

a. Able to be integrated into the gearbox system such that the oil is dispensed directly onto operator stem threads prior to threads making contact with the drive nut.

b. Electronically controlled such that the oil is only dispensed on the closing of the gates.

c. 64-ounce reservoir capacity.

I. Telescoping Bellows

1. Sewn round bellows made of Hypalon coated nylon as manufactured by Custom Quality Manufacturing, 5015 Tampa West Blvd., Tampa, Florida 33634, or equal, having the following salient characteristics:

a. Resistant to water, dust, and small debris on the outside while being resistant to oil on the inside.

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b. Service temperature range: -30 to 120 degrees Fahrenheit.

c. UV resistant.

2. Upper Bellows

a. Expands to 20 feet such that the operator stem above the top of the actuator unit is completely covered when the gates are fully raised.

b. Collapses to 1 foot such that the bellows do not become damaged or unattached when the gates are closed.

c. Have a minimum inner diameter of 3 inches.

d. Able to remain in both the fully expanded and fully collapsed position, as defined above, for long durations without causing accelerated wear or damage as per the manufacturer’s recommendation.

e. Contractor must furnish a riser for the bottom of the Upper Bellows such that the bellows do not get pulled into the actuator unit as per the manufacturer’s recommendation.

3. Lower Bellows:

a. Expands to 14 feet such that the operator stem is completely covered from the bottom of the operator deck to the coupling.

b. Collapses to 8 inches such that the gate leaves can be fully raised out of the gate guides without damage.

c. The Lower Bellows must have an inner diameter greater than the outer diameter of the Coupling.

d. The Lower Bellows must be able to remain in both the fully expanded and fully collapsed position, as defined above, for long durations without causing accelerated wear or damage as per the manufacturer’s recommendation.

PART 3 EXECUTION

3.01 PREPARATION

A. Erect suitable platforms, scaffolding, handrails, stairways, weather cover, lighting and ventilation as needed to provide a level and stable staging surface of sufficient load-bearing capacity to support materials, personnel, tools, and equipment planned for performing the work.

B. Contractor shall perform on site, factory, or lab inspections as appropriate to document, verify, and make recommendations regarding:

1. Current conditions of bulkheads, gate guides, and sills installed in gate bays 10 and 11.

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2. Technical characteristics for operator stems and drive nuts.

C. Contractor shall develop and submit a repair plan addressing damaged areas that exceed allowable tolerances as described in this specification.

D. Contractor shall develop and submit an attachment plan for the Upper and Lower Bellows. Attachment method must not damage or compromise existing structures or interfere with gate operation. Bellows and attachment method must be installable and removable without the use of powered tools. The Upper and Lower Bellows will require different methods of attachment:

1. Upper Bellows are to be attached to the top of the Operator Stem above the actuator unit. The bottom of the Upper Bellows is to be attached to the riser.

2. Lower Bellows are to be attached to the bottom of the Operator Deck. The bottom of the Lower Bellows is to be attached to the coupling.

E. Contractor shall field verify dimensions of all fabricated items and ensure designated clearances prior to installation.

3.02 BULKHEAD MODIFICATION

A. Modify shorter bulkhead:

1. Modify existing 8-foot by 10-foot bulkhead as necessary to make equal to the 8-foot by 12-foot bulkhead. Material to be added includes ASTM A-36 steel and foam neoprene seals.

3.03 REMOVING EXISTING OPERATOR STEM, AND PERIPHERAL PARTS

A. Remove Stem:

1. Unthread and remove the existing stem from the actuator.

B. Remove Drive Nuts:

1. Remove remaining drive nut(s) as instructed by Rotork Controls Inc. for the following gearbox:

a. Gearbox C0026801-2, type B9, STD 70.

3.04 REPLACE DAMAGED PARTS

A. Stem Nuts. – If existing stem nuts were damaged during removal or are corroded beyond use, provide hex nuts, stainless steel. Include stainless steel 3/8-inch-16UNC-2A by 1/2-inch long allen cup point set screw and 5/16-inch diameter by 3/8-inch long soft lead plug to allow locking the nuts to the stem without damaging the threads.

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B. If no locking means exists in the operator stem/stem nut connection, then drill and tap the stem nuts in the center of one of the nut faces for and provide a 3/8-inch-16UNC-2A by 1/2-inch long allen cup point set screw. Also provide a 5/16-inch diameter by 3/8-inch long soft lead plug for each set screw.

C. Replace any part damaged during contract work. Replacement will be at Contractor’s expense. If requested by CO, create and submit list of parts to be replaced for approval.

3.05 REHABILITATE GATE GUIDES AND SILL

A. Rehabilitate Gate Guides:

1. Mill and repair surface irregularities that will adversely impact function, fit, or could cause maintenance problems.

2. If more than 1/16-inch is needed to be machined in order to achieve a smooth machined finish with a 125-microinch profile, notify the CO in writing. Identify the areas that have more than 1/16-inch-deep corrosion or other damage on a sketch.

3. Prepare and coat gate guides in accordance with Section 09 96 20 – Coatings.

4. After paint has thoroughly cured, lubricate sliding surfaces of gate guides with approved waterproof grease.

B. Repair Sill

1. Repair existing sill in accordance with approved repair plan.

3.06 DESIGN AND FABRICATE

A. Lifting Bracket:

1. Design and fabricate a lifting bracket to install gate leaves in accordance to approved drawings and data.

2. Refer to Section 1.06, Paragraph D for installation method.

3. This lifting bracket is to be delivered to the Government after completion of work.

B. Anti-Rotational Block

1. Design and fabricate an anti-rotational block to prevent the gate leaves from rotating while being raised and lowered.

2. Split design that allows removing and replacing block without removing stem operator.

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3.07 FABRICATE GATE LEAVES, OPERATOR STEMS, AND COUPLINGS

A. Design, develop, and submit shop drawings for new gate leaves, operator stems, and couplings.

B. Fabricate two new gate leaves, operator stems, and couplings in accordance with approved submittal data and provided drawings.

C. Molds used to fabricate gate leaves must be made from #1 clear pine and will be turned over to the Government after conclusion of work. Molds are to be stored by the foundry.

D. Machine and mill gate leaves as needed to conform to dimensions to Drawing 4 (Sheet 4).

E. Prepare and coat gate leaves in accordance with Section 09 96 20 – Coatings.

3.08 ASSEMBLE GATE

A. Transport Leaves:

1. Transport leaves, stem, and appurtenant parts to the dam.

2. Provide suitable protection and support to prevent damage to seats and coating.

3. Store in secure area and protect against damage.

B. Install Gate Leaves:

1. Lift lower gate leaf and install in guides. Carefully lower leaf all the way until contact with sill. When lowering the lower gate leaf take special precaution to not chip the coating when making contact with gate guides or sill.

2. Ensure the lower leaf makes continuous contact with the new sill and with the machined downstream face of the guides. Ensure leaf is pressed against the guides in the downstream direction.

3. Lift upper gate leaf and install in guides. Carefully lower leaf all the way to the stepped surface of the guides five feet above the sill. When lowering the upper gate leaf take special precaution to not chip the coating when the bottom edge of the upper gate leaf passes by the upper edge of the lower gate leaf.

4. Check to make sure that the upper gate leaf makes continuous contact with the machined downstream face of the guides. Check to make sure leaf is pressed against the guides in the downstream direction.

C. Install Stem Guide Bracket:

1. Install stem guide bracket as shown on the drawing sealing between the bracket and leaf with gasket sealant. Install screws with stem locking compound to a torque of 120 pound-feet.

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2. Install stem guide bushing onto the bracket as shown on the drawings and as recommended by the manufacturer. Ensure that the stem is in a straight line.

D. Install Gear Box, Actuator, and Drive Nut:

1. Install gear box and actuator as per approved installation plan. Area Manager, not Contractor, will land power and SCADA lines. Contractor must provide 48 hours-notice to Area Manager of when lines need to be landed.

2. Install actuator drive nuts as instructed by Rotork Controls Inc. for the following gearbox:

a. Gearbox C0026801-2, type B9, STD 70

E. Install Operator Stem:

1. Lift and install operator stem and coupling as per drawings and approved installation plan.

2. When lowering operator stem, take special precaution not to damage the stem or any existing, or already installed, part.

3. Ensure that the stem and coupling is vertically plumb.

4. Install all peripheral equipment to secure stem in place.

5. Lubricate operator and stem threads and install stem cover.

6. Assemble and install oiling system.

7. Install split stem guide bushing as per approved installation plan.

8. Install anti-rotational block as per approved installation plan.

9. Install stem bellows and risers as per manufacturer recommendation and approved installation plan.

F. Remove Bulkheads:

1. Remove bulkheads and anchors currently installed in gate bays 10 and 11.

2. When removing bulkhead, take special precaution not to damage any existing, or already installed, part.

3.09 CONTRACTOR FIELD QUALITY TESTING

A. Perform testing in presence of the OGR. Notify the OGR at least 5 days in advance of when tests are to be performed.

B. Operation of the slide gate using gate controls will be by the Government only after gate and gate operator are installed and operational.

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C. Operational Tests: After rehabilitation and modifications are complete and after gate and operator are installed and operational, the Government will operate the gate through three cycles, checking that:

1. No binding or excessive vibrations occur as determined by the COR.

2. Stem does not appear to deflect during seating the gate closed.

3. If binding or vibrations occur, determine the cause, make adjustments or corrections, and re-test at the Contractor’s expense.

4. Operation of gate does not cause excessive noise.

D. Leakage Tests: After operational tests of the slide gate is complete, close the slide gate.

Inspect the sill, seats, and intermediate seals for leakage using available reservoir head as follows:

1. Perimeter seal leakage shall not exceed 0.1 gallons per minute per foot of seal under pool elevation.

2. With feeler gauge, measure and record measurable gap between bottom of leaf and sill. No gap greater than 0.005-inch will be allowed.

3. If leakage exceeds maximum allowable, open gates, make corrections, and re-test at the Contractor’s expense.

E. Submit test results as Final Data.

3.10 FINAL AS-BUILTS

A. Supply final as-built drawings in accordance with Section 01 78 30 – Project Record Documents.

END OF SECTION

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140R2018R0001 – Derby Diversion Dam Replacement of Gates & Metalwork Spec. No. 20- C0870

H-1

SECTION H – SPECIAL CONTRACT REQUIREMENTS

H.1 DIAPR

2000-1 – NON DISCRIMINATION NOTICE TO U.S. DEPARTMENT OF THE

INTERIOR CONTRACTORS, SUBCONTRACTORS, AND LESSORS (DEC 1999)

Based upon law, Executive Order, or internal policy, the Department of the Interior prohibits discrimination in the workplace, including sexual harassment, based on race, color, national origin, sex, religion, disability, age, or sexual orientation. The Department urges its contractors, subcontractors and lessors to develop and enforce comprehensive anti-discrimination policies for their places of work.

H.2 INTERMEDIATE MILESTONES AND LIMITATIONS

Special Instructions to Contractor – Special Limitations to the Work Period The information provided below refers to the time period specified in FAR Clause 52.211-10 located in Section F of this solicitation and provides additional limits to the time allowed for the Offeror to perform this work.

No onsite construction between Feb. 1 and May 31. The contractor may perform inspections of gate guides, sill, bulkheads, operator stems, drive nuts, etc. during this period with approved interruption in service requests.

140R2018R0001– Derby Diversion Dam Replacement of Gates & Metalwork Spec. No. 20-C0870

J-1

SECTION J - LIST OF DOCUMENTS, EXHIBITS AND OTHER ATTACHMENTS

Attachment Number

List of Documents, Exhibits, and other Attachments

General Decision Number: NV180063 01/05/2018 NV63- Pages 6/6

Subcontracting Percentages Worksheet – Page 1/1

Past Performance Questionnaire – Pages 3/3

Offeror Responsibility Information – Pages 4/4

Offeror Past Performance Information Worksheet – Pages 2/2

Section G - RAC 15-13 Invoicing Documents Page 5/5

Site Visit Attendance Sheet – Page 1/1 https://www.wdol.gov/wdol/scafiles/davisbacon/NV63.dvb?v=0 1/6

General Decision Number: NV180063 01/05/2018 NV63

Superseded General Decision Number: NV20170063

State: Nevada

Construction Type: Heavy HEAVY CONSTRUCTION PROJECTS (including sewer/water construction).

County: Washoe County in Nevada.

Note: Under Executive Order (EO) 13658, an hourly minimum wage of $10.35 for calendar year 2018 applies to all contracts subject to the Davis-Bacon Act for which the contract is awarded (and any solicitation was issued) on or after January 1, 2015.

If this contract is covered by the EO, the contractor must pay all workers in any classification listed on this wage determination at least $10.35 per hour (or the applicable wage rate listed on this wage determination, if it is higher) for all hours spent performing on the contract in calendar year 2018. The EO minimum wage rate will be adjusted annually.

Please note that this EO applies to the above-mentioned types of contracts entered into by the federal government that are subject to the Davis-Bacon Act itself, but it does not apply to contracts subject only to the Davis-Bacon Related Acts, including those set forth at 29 CFR 5.1(a)(2)-(60). Additional information on contractor requirements and worker protections under the EO is available at www.dol.gov/whd/govcontracts.

Modification Number Publication Date 0 01/05/2018

CARP0971-013 07/01/2017

Rates Fringes

CARPENTER (Includes Form Work)...$ 41.53 15.86

ELEC0401-011 12/01/2015

Rates Fringes

ELECTRICIAN......................$ 37.50 21.37

ENGI0003-015 07/01/2017

Rates Fringes

POWER EQUIPMENT OPERATOR

GROUP 08....................$ 35.98 23.90

GROUP 10....................$ 36.65 23.90

GROUP 10A...................$ 36.84 23.90

GROUP 11....................$ 37.08 23.90

GROUP 11A...................$ 38.72 23.90

GROUP 8: Sheepsfoot

GROUP 10: Grade Setter

GROUP 10A: Power Shovels, Clamshells, Draglines, Cranes (up to and including one [1] cu. yd.) .

Amendment 0001 1/10/2018

Attachment 1 https://www.wdol.gov/wdol/scafiles/davisbacon/NV63.dvb?v=0

1/10/2018 https://www.wdol.gov/wdol/scafiles/davisbacon/NV63.dvb?v=0 https://www.wdol.gov/wdol/scafiles/davisbacon/NV63.dvb?v=0 2/6

GROUP 11: Power Shovels, Clamshells, Draglines, Backhoes, Gradalls (over one [1] cu. yd. and up to and including seven [7) cu. yds. m.r.c.) (Assistant to Engineer required) (Two [2) Assistants to Engineer required on 120B, similar or larger).

GROUP 11A: Power Shovels, Clamshells, Draglines, Backhoes and Gradalls {over seven (7] cu. yds. m.r.c.) {Assistant to Engineer required; an additional Assistant to Engineer is required if the shovel or dragline is electrically powered).

ENGI0003-030 07/01/2017

Rates Fringes

POWER EQUIPMENT OPERATOR

(09) Mechanic and Backhoe

Loader Combo................$ 36.30 23.90

ENGI0012-014 10/01/2016

Rates Fringes

POWER EQUIPMENT OPERATOR

(Crane)

GROUP 12....................$ 46.54 23.65

GROUP 16....................$ 47.96 23.65

GROUP 17....................$ 48.46 23.65

GROUP 19....................$ 50.49 23.65

GROUP 20....................$ 51.10 23.65

GROUP 21....................$ 57.71 23.65

GROUP 22....................$ 52.47 23.65

GROUP 23....................$ 52.93 23.65

GROUP 12: Crane Operator (up to including 40 ton capacity)

GROUP 16: Crane Operator (over 40 tons up to and including 79 tons)

GROUP 17: Crane Operator (Including 80 tons up to and including 150 tons)

GROUP 19: Crane Operator (over 150 tons up to and including 200 tons)

GROUP 20: Crane Operator (over 200 tons up to and including 250 tons)

GROUP 21: Crane Operator (over 250 tons up to and including 300 tons)

GROUP 22: Crane Operator (over 300 tons up to and including 350 tons)

GROUP 23: Crane Operator (over 350 tons)

ENGI0012-021 10/01/2016

Rates Fringes

POWER EQUIPMENT OPERATOR

GROUP 1....................$ 41.39 23.65

https://www.wdol.gov/wdol/scafiles/davisbacon/NV63.dvb?v=0 3/6

GROUP 4....................$ 44.12 23.65

GROUP 8....................$ 44.45 23.65

GROUP 12....................$ 44.74 23.65

POWER EQUIPMENT OPERATOR CLASSIFICATIONS

Group 1: Oiler

Group 4: Screed Operator (Asphalt or Concrete); Rock Wheel Saw/Trencher

Group 8: Compactor (self-propelled); Drilling Machine Operator, Bucket or Auger Types (Calweld 150 Bucket or similar types - Watson 1500, 2000, 2500 Auger or similar types - Texoma 700, 800 Auger or similar types - drilling depth of 60' maximum).

Group 12: Vermeer Rock Trencher (or similar type).

IRON0416-002 05/01/2017

Rates Fringes

IRONWORKER, REINFORCING..........$ 35.66 30.98

IRON0433-002 05/01/2017

Rates Fringes

IRONWORKER, STRUCTURAL...........$ 35.66 30.98

LABO0169-003 10/01/2016

Rates Fringes

LABORER

(1) Common or General;

Cones/ Barricades/ Barrels- Setter/Mover/Sweeper........$ 24.85 9.81 (1A) Flagger................$ 21.98 9.81

(3) Asphalt Shoveler, Spreader and Distributor;

Concrete Saw (Hand Held/Walk Behind); Mason Tender - Cement/Concrete;...$ 25.10 9.81

(4) Asphalt Raker;

Pipelayer...................$ 25.35 9.81

* PLAS0797-009 10/01/2017

Rates Fringes

CEMENT MASON/CONCRETE FINISHER...$ 28.96 10.74

SUNV2014-026 09/08/2016

Rates Fringes

OPERATOR:

Backhoe/Excavator/Trackhoe.......$ 32.26 17.65

OPERATOR: Bobcat/Skid Steer/Skid Loader................$ 34.97 0.00 https://www.wdol.gov/wdol/scafiles/davisbacon/NV63.dvb?v=0 4/6

OPERATOR: Broom/Sweeper.........$ 36.66 12.22

OPERATOR: Grader/Blade..........$ 26.49 7.78

OPERATOR: Loader................$ 33.53 17.10

OPERATOR: Paver (Asphalt, Aggregate, and Concrete).........$ 29.57 0.00

OPERATOR: Roller................$ 33.69 12.22

TRUCK DRIVER: Dump Truck........$ 22.28 0.00

WELDERS - Receive rate prescribed for craft performing operation to which welding is incidental.

Note: Executive Order (EO) 13706, Establishing Paid Sick Leave for Federal Contractors applies to all contracts subject to the Davis-Bacon Act for which the contract is awarded (and any solicitation was issued) on or after January 1, 2017. If this contract is covered by the EO, the contractor must provide employees with 1 hour of paid sick leave for every 30 hours they work, up to 56 hours of paid sick leave each year.

Employees must be permitted to use paid sick leave for their own illness, injury or other health-related needs, including preventive care; to assist a family member (or person who is like family to the employee) who is ill, injured, or has other health-related needs, including preventive care; or for reasons resulting from, or to assist a family member (or person who is like family to the employee) who is a victim of, domestic violence, sexual assault, or stalking. Additional information on contractor requirements and worker protections under the EO is available at www.dol.gov/whd/govcontracts.

Unlisted classifications needed for work not included within the scope of the classifications listed may be added after award only as provided in the labor standards contract clauses (29CFR 5.5 (a) (1) (ii)).

The body of each wage determination lists the classification and wage rates that have been found to be prevailing for the cited type(s) of construction in the area covered by the wage determination. The classifications are listed in alphabetical order of "identifiers" that indicate whether the particular rate is a union rate (current union negotiated rate for local), a survey rate (weighted average rate) or a union average rate (weighted union average rate).

Union Rate Identifiers

A four letter classification abbreviation identifier enclosed in dotted lines beginning with characters other than "SU" or "UAVG" denotes that the union classification and rate were prevailing for that classification in the survey. Example:

PLUM0198-005 07/01/2014. PLUM is an abbreviation identifier of the union which prevailed in the survey for this classification, which in this example would be Plumbers. 0198 indicates the local union number or district council number https://www.wdol.gov/wdol/scafiles/davisbacon/NV63.dvb?v=0 5/6 where applicable, i.e., Plumbers Local 0198. The next number, 005 in the example, is an internal number used in processing the wage determination. 07/01/2014 is the effective date of the most current negotiated rate, which in this example is July 1, 2014.

Union prevailing wage rates are updated to reflect all rate changes in the collective bargaining agreement (CBA) governing this classification and rate.

Survey Rate Identifiers

Classifications listed under the "SU" identifier indicate that no one rate prevailed for this classification in the survey and the published rate is derived by computing a weighted average rate based on all the rates reported in the survey for that classification. As this weighted average rate includes all rates reported in the survey, it may include both union and non-union rates. Example: SULA2012-007 5/13/2014. SU indicates the rates are survey rates based on a weighted average calculation of rates and are not majority rates. LA indicates the State of Louisiana. 2012 is the year of survey on which these classifications and rates are based. The next number, 007 in the example, is an internal number used in producing the wage determination. 5/13/2014 indicates the survey completion date for the classifications and rates under that identifier.

Survey wage rates are not updated and remain in effect until a new survey is conducted.

Union Average Rate Identifiers

Classification(s) listed under the UAVG identifier indicate that no single majority rate prevailed for those classifications; however, 100% of the data reported for the classifications was union data. EXAMPLE: UAVG-OH-0010 08/29/2014. UAVG indicates that the rate is a weighted union average rate. OH indicates the state. The next number, 0010 in the example, is an internal number used in producing the wage determination. 08/29/2014 indicates the survey completion date for the classifications and rates under that identifier.

A UAVG rate will be updated once a year, usually in January of each year, to reflect a weighted average of the current negotiated/CBA rate of the union locals from which the rate is based.

WAGE DETERMINATION APPEALS PROCESS

1.) Has there been an initial decision in the matter? This can be:

* an existing published wage determination

* a survey underlying a wage determination

* a Wage and Hour Division letter setting forth a position on a wage determination matter

* a conformance (additional classification and rate) ruling

On survey related matters, initial contact, including requests for summaries of surveys, should be with the Wage and Hour Regional Office for the area in which the survey was conducted https://www.wdol.gov/wdol/scafiles/davisbacon/NV63.dvb?v=0 6/6 because those Regional Offices have responsibility for the Davis-Bacon survey program. If the response from this initial contact is not satisfactory, then the process described in 2.)

and 3.) should be followed.

With regard to any other matter not yet ripe for the formal process described here, initial contact should be with the Branch of Construction Wage Determinations. Write to:

Branch of Construction Wage Determinations Wage and Hour Division U.S. Department of Labor 200 Constitution Avenue, N.W.

Washington, DC 20210

2.) If the answer to the question in 1.) is yes, then an interested party (those affected by the action) can request review and reconsideration from the Wage and Hour Administrator (See 29 CFR Part 1.8 and 29 CFR Part 7). Write to:

Wage and Hour Administrator U.S. Department of Labor 200 Constitution Avenue, N.W.

Washington, DC 20210

The request should be accompanied by a full statement of the interested party's position and by any information (wage payment data, project description, area practice material, etc.) that the requestor considers relevant to the issue.

3.) If the decision of the Administrator is not favorable, an interested party may appeal directly to the Administrative Review Board (formerly the Wage Appeals Board). Write to:

Administrative Review Board U.S. Department of Labor 200 Constitution Avenue, N.W.

Washington, DC 20210

4.) All decisions by the Administrative Review Board are final.

END OF GENERAL DECISION