PWS-Falcon Penstock 4 Gate Closure.pdf

International Boundary and Water Commission United States and Mexico United States Section Operations and Maintenance Division

International Boundary and Water Commission United States and Mexico United States Section

Front Cover

Performance Work Statement (PWS) Falcon Power Plant Penstock Gate #4 Closure Starr County, Texas

May 2025

USIBWC Falcon Power Plant

May 2025 Performance Work Statement

USIBWC Solicitation Page-2 of 26

SECTION 5

PROJECT SPECIFIC INFORMATION

5.0 Project Overview

The United States Section of the International Boundary and Water Commission (USIBWC) require design/build/install Sixteen (16) Stop Logs made of Concrete/Rebar to permanent closure Penstock Gate

#4 at the Falcon Power Plant located at FM2098, 1 Reservoir Rd., Falcon Heights, Texas 78545.

5.1 General

This is a non-personnel services Contract to design/build/install a set of sixteen (16) Concrete Stop Logs to permanent closure Penstock Gates #4. The Government shall not exercise any supervision or control over the Contract service providers performing the services herein. Such Contract service providers shall be accountable solely to the Contractor who, in turn is responsible to the Government.

5.2 Description of Services

The Contractor shall provide all personnel, equipment, supplies, transportation, tools, materials, supervision necessary to perform the work as defined in this Performance Work Statement except for those items specified as government furnished property and services. The Contractor shall perform to the standards in this contract.

5.3 Objective

A. To provide design/ build/ install Sixteen (16) Stop Logs made of Concrete/Rebar to permanent closure of Penstock Gate #4. Also, the Contractor shall inspect, maintenance, and repair any service required on Penstock Gate #4 prior to perform the installation of Sixteen (16). Stop Logs. The approximate measure of each Stop Log is 12 feet 4 inches wide by 5 Foot 1 inches Length, and 1 foot 11 inches

Depth. The main reference to design all 16 (Sixteen) Stop Logs are be based on current Stop Logs

Design made of Steel and Wood. The new Sixteen (16) Stop Logs shall include all the hardware and equipment required to install them on front of the Penstock Gate. USIBWC request the Contractor provide pricing for all items listed below. The work will be performed in three (3) phases.

B. Phase 1 would be Inspection Penstock #4 Gate and Design of the Sixteen (16) Stop Logs.

C. Phase #2 would be building Sixteen (16) Stop Logs made of concrete and reinforced with Rebars.

Size of the Rebars would be determined by Construction Standards, Previous Design for Stop Logs, and would be reviewed/approved by Power Plant Superintendent and COR.

D. Phase 3 would consist of cleaning, Inspect, Repairs and installing all the Stop Logs on front of the

Penstock Gate #4. The Existing Road Crane will be used to Positioning the New Stop Logs on front of the Penstock Gate. Also, there are cast -iron guides embedded in the intake structure that help guide the Stop Logs in front of the Penstock Gate #4.

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5.4 Cleaning and Surface Preparation

a. The Contractor shall provide a comprehensive cleaning reconditioning to include the removal of old grease, surface rust, rocks on the bottom of the cast-iron guides mounted on the intake structure to guide new Stop Logs.

b. Inspection. The Contractor shall perform a comprehensive Structural Streel and Concrete

Inspection on the penstock structure.

c. Repairs. The Contractor shall inspect, repair, and install all broken cast iron guides if necessary.

5.5 Project Location

A. USIBWC Falcon Power Plant is located at FM2098, 1 Reservoir Rd., Falcon Heights, Texas 78545.

B. The work is located completely within the United States but is adjacent to the international border with Mexico.

C. Access to the Falcon Power Plant requires crossing through the United States Port of Entry and complying with proper documentation (passports or other) as required by U.S. Customs and Border

Protection officials.

5.6 Period of Performance

A. The Contractor shall complete this work within 180 calendar days after the Contract has been awarded to the Contractor.

5.7 Investigation of Site Conditions

A. Contractors are encouraged to attend an agency organized site visit. Site visits may be scheduled by contacting Edi Delgado at 956-848-5211 or Edi.Delgado@ibwc.gov. While attending the site visit all contractors shall use personal protective equipment (PPE). Contractors will not be permitted access to IBWC facilities without proper PPE. Virtual site visits (video/photographs) are not permitted.

B. Submission of a quote shall be conclusive evidence that the Contractor has reviewed, investigated, and acknowledged all items below.

1. Conditions bearing upon transportation, disposal, handling, and storage of materials.

2. The availability of labor, water, electric power, and roads.

3. Uncertainties of weather and similar physical conditions at the site.

4. The conformation and conditions of the ground.

5. The character of equipment and facilities needed preliminary to and during work performance.

C. Submission of a quote shall be conclusive evidence that the Contractor has investigated and is satisfied as to the conditions to be encountered, the character, quality, and work to be performed, and the quantities of materials to be furnished.

D. Submission of a quote constitutes agreement that Contractor has provided written notice of all conflicts, errors, ambiguities, and discrepancies discovered in PWS, that responses to these written notices are acceptable to Contractor, and that PWS is enough to indicate and convey understanding of all terms and conditions for performing and furnishing required work.

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E. Contractor has the sole responsibility to make such independent investigation and examination as they deem necessary to satisfy themselves as to the conditions to be encountered in the performance of work and the quantities required to complete the work in accordance with the PWS.

F. The Government assumes no responsibility for any understanding reached or representation made concerning conditions which can affect the work by any of its officers or agents before the execution of this Contract, unless that understanding, or representation is expressly stated in this Contract.

G. Any failure of the Contractor to take the actions described and acknowledged in this paragraph will not relieve the Contractor from responsibility for estimating properly the difficulty and cost of successfully performing the work, or for proceeding to successfully perform the work without additional expense to the Government.

5.8 Duty to Inquire

A. Contractor shall review the full PWS.

B. If during review of these items, the Contractor finds discrepancies, omissions, conflicts, defects, errors, or ambiguities, they have a duty to inquire and shall notify the Contracting Officer prior to the question submission deadline as established in the solicitation. The Contractor shall also inquire about items that are unclear or open to interpretation.

C. The Contractor shall take no advantage of any item of which they have a duty to inquire.

5.9 Work Restrictions

A. The Contractor is responsible for conducting business between the hours of 7:00 AM thru 5:30 PM, Monday thru Friday except Federal holidays or when the Government facility is closed due to local or national emergencies, administrative closings, or similar Government-directed facility closings.

B. The Contractor may request different working hours and must submit in writing to the Contracting

Officer (CO). The USIBWC may be unable to accommodate different working hours.

5.10 Department of Homeland Security

In any event the staff of the US Department of Homeland Security (DHS, also known as US Customs and

Border Protection or CBP) alerts and directs any field crews to stop work for any security reasons in the area, the Contractor shall consider this as top priority and fully always cooperate with the directions of DHS until the security alert is cleared by the DHS. In addition, the Contractor shall contact and coordinate with the CO and Contracting Officer Representative (COR) for any additional steps to be taken during and after the security alert.

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SECTION 6

PROJECT REQUIREMENTS

6.0 General

A. The Design and Build Sixteen (16) Stop Logs requires are the followings:

1. The Contractor shall submit a project schedule to be reviewed and approved by the Power

Plant Superintendent.

2. The Contractor shall furnish in writing a work plan outlining the procedures proposed for the work and a list of materials including name of manufacturer, pertinent product identification names and numbers, and product data sheets. The plan shall be provided to the COR for review and approval within 14 days of contract award and prior to beginning the work.

3. The Contractor shall provide a screening list to perform a start/final inspection of the Sixteen

(16) New Stop Logs.

4. The Contractor must follow the latest standards to design/ build/install Sixteen (16) Stop Logs.

United States Army Corps of Engineers (USACE), Environmental Protection Agency (EPA), National Hydropower Association, and other safety agencies.

5. Contractor shall provide a design/ build/ install/inspection final report 10 working days after the project is completed. The report shall include reports of the stop logs design/build/installation inspections, documentation of the maintenance and repair activities, recommendations, photos, videos, and supporting documentation.

6. The contractor shall design all the new Stop Logs similar to the original Stop Logs made of wood and steel. The measure of all Sixteen (16) Stop Logs would be half the Length of the original Stop Logs. Please review the original Stop Logs drawing that will be included with the Solicitation for design Purpose.

7. The Contractor shall provide and install hardware including but not limited to leaf springs, bolts, nuts, and any other item required to complete the complete design and construction for

Sixteen (16) Stop Logs.

8. USIBWC will provide a 45-ton overhead roadway crane and crane operator to perform this project due to difficulties (unsafe) and lack of space to install a private mobile crane on the roadway bridge.

9. The Contractor shall provide detailed cost breakdown to include assessment inspection, design, construction equipment, supplies, and service required to build Sixteen 916) Stop

Logs.

10. The Contractor shall submit a Job Safety Analysis (JSA) Form filled out to be reviewed by

Power Plant Personnel.

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11. Conduct a Safety Meeting with all the personnel involved in the project and Power Plant

Personnel prior to starting the project. In addition, daily safety meetings shall be conducted at the start of each workday.

12. The Contractor shall design/ build/ install Sixteen (16) Stop Logs made of Concrete with Rebar to permanent closure of Penstock Gate #4. Also, the Contractor shall inspect, maintenance, and repair any service required on Penstock Gate #4 prior to perform the installation of Sixteen (16).

Stop Logs. The approximate measure of each Stop Log is 12 feet 4 inches wide by 5 Foot 1 inches Length, and 1 foot 11 inches Depth. The main reference to design all 16 (Sixteen) Stop

Logs are be based on current Stop Logs Design made of Steel and Wood. The new Sixteen (16)

Stop Logs shall include all the hardware and equipment required to install them on front of the

Penstock Gate.

13. Comprehensive cleaning and reconditioning to include the removal of old grease, surface rust, and old paint.

14. Comprehensive Inspection on Rails Structural Streel on the Penstock required to install new

Stop Logs.

15. Contractor must provide, remove, and install all broken rails (If Necessary) that need to be replaced to install new Stop Logs.

16. The design, engineering, and construction of the formwork are the responsibility of the

Contractor. Design formwork in accordance with methodology of ACI 347R for anticipated loads, lateral pressures, and stresses. Forms shall have capability of withstanding the pressures resulting from placement and vibration of concrete.

17. Design the formwork as a complete system with consideration given to the effects of cementitious materials and mixture additives such as fly ash, cement type, plasticizers, accelerators, retarders, air entrainment, and others.

18. Monitor the adequacy of formwork design and construction prior to and during concrete placement as part of the Contractor's compliance confirmed Quality Control Plan.

19. Forms include horizontal and vertical formwork, vertical shoring, and falsework.

20. Forms, embedded items, ties, and other accessories shall be inspected by the COR and Power

Plant Superintendent with sufficient time prior to each concrete placement to certify that the forms are ready to receive concrete.

21. Inspection of forms for concrete shall include a detailed evaluation of leakage control measures, type and application of release agent, and form cleanliness to avoid dirt transfer to the concrete.

22. Abrupt or Gradual Irregularities in Formed Surfaces. Allowable tolerances for formed surfaces are shown in Table 3. Offsets and fins resulting from displaced, mismatched, or misplaced forms, sheathing, or lines, or from defects in forming materials are considered abrupt

USIBWC Solicitation Page-7 of 26 irregularities. Irregularities resulting from warping and similar uniform variations from planeness or true curvature are considered gradual irregularities. Gradual irregularities shall be checked with a straightedge for plane surfaces or a shaped template for curved or warped surfaces.

23. Table 3 - Permitted Surface Irregularities

Class of Surface A B C D

Permitted Irregularity (In) 1/8 1/4 1/2 1

a. Class A formed surface is used for surfaces prominently exposed to public view where appearance is of upmost importance and to surfaces where accurate alignment and evenness are required to eliminate destructive effects of water.

b. Class B formed surface is used for surfaces with special appearance requirements not required to have a Class A surface and for coarse textured concrete formed surfaces that are usually intended to receive plaster, stucco, or wainscoting.

c. Class C formed surface is a general standard for permanently exposed surfaces where other finishes are not specified.

d. Class D formed surface is the minimum quality requirement for permanently concealed surfaces. Surface and finish are used interchangeably in these Technical Specifications in reference to the finished appearance of the concrete. Concrete strength classes are defined in

Section 03.31.00.

6.1 Reporting

1. The results of each inspection are to be reported in writing and shall include, but not be limited to, the following:

A. Removal of extraneous material from forms.

B. Check of joints for mortar tightness.

C. Type of form material required for the concrete finish.

D. Falsework, shoring, and/or bracing.

E. Alignment, tolerances, and dimensions.

F. Chamfering.

G. Form coating.

2. Use IBWC Form 238, Concrete Placement Card, for inspection prior to concrete placement. The original form shall be provided to COR with the Contractor's daily report.

2.3 FORM DESIGNS

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1. Safety Factor

Design, erect, brace, and maintain formwork, falsework, structural shoring, and bracing to safely support all vertical and lateral loads that might be applied until the structure can support such loads. Incorporate the minimum safety factors (as specified in ANSI A10.9, Safety Requirements for Concrete and Masonry Work) in the design and erection of all frameworks, shoring, falsework, and formwork accessories.

2. Design forms

The pressure exerted by a liquid weighing 150 pounds per cubic feet; take the rate of concrete placement into consideration in determining the depth of the equivalent liquid; include a live load allowance of 50 pounds per square feet of horizontal surface for job-fabricated forms. Do not exceed 125% of the allowable stresses for the design of structures. For commercially produced structural units used for forms, do not exceed the manufacturer’s maximum allowable working loads for moment and shear or end reaction. Include a live load allowance of 35 pounds per square feet of horizontal form surface in determining the maximum allowable working load for commercially produced structural units.

3. Construction Loads

Do not impose any construction loads on the partially completed structures unless such loading has been considered in the design and is shown on the formwork design drawings or specifications.

4. Plans for Formwork.

1. The form plans shall show all essential details of the proposed formwork. Include standard dimensions, types of studding, shoring, and sequence of work.

2.The form plans shall show all essential details of the proposed formwork. COR and Power Plant

Superintendent (PPS) Approved Formwork Plan

3. COR and PPS must approve and sign detailed design calculations and working drawings for all formwork or vertical shoring installations when any of the following conditions exist:

a) The total height of the forms exceeds 10 feet.

b) Individual form horizontal span lengths exceed 20 feet.

c) Provisions are made for vehicular or railroad traffic through the falsework or vertical shoring.

d) When the formwork plans have been designed and stamped by a designer, Government compliance confirmation is not required, but the Government reserves the right to request modifications to the plans.

e) Submit drawings showing details of formwork, including dimensions of fiber voids, joints, supports, studding, and shoring, and sequence of form and shoring removal. If reshoring is permitted, submit the method, including location, order, and time of erection and removal.

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6.2 FORMS SPECIFICATIONS

A. GENERAL:

1) Except where otherwise specified or permitted, the Contractor shall provide forms of either timber or metal. Use only one type of form sheathing or lining material per structure.

2) Construct forms to confine and shape concrete to required lines so that completed work meets specified structural deviations, surface tolerances, and finish requirements.

3) Construct forms with sufficient strength to maintain position and withstand pressure from placing and vibrating concrete.

4) For commercially produced structural units used for forms, do not exceed the manufacturer’s maximum allowable working loads for moment and shear or end reaction.

5) Provide forming systems that are practically mortar-tight, rigidly braced, and strong enough to prevent bulging between supports and maintain them to the proper line and grade during concrete placement.

6) When concrete contains Type 1 or Type 2 plasticizer chemical admixtures, adjust formwork design and concrete placing rate to compensate for hydraulic pressures exerted on forms by concrete with high fluidity. Maintain forms in a manner that prevents warping and shrinkage.Do not allow offsets at form joints to exceed 1/16 inch.

B. FINISH

a) Forms shall be designed to meet the finishes required in Section 03.31.00-Cast-in-Place

Concrete.

b) Where concrete will be backfilled with earthen materials, a Class D finish form may be used.

The concrete plug requires Class C finish.

C. FORMS MATERIAL.

a) Forms for Class A, Class B, or Class C finished surfaces shall be plywood panels conforming to APA PS 1, Grade B-B concrete form panels, Class I or II. Other form materials or liners may be used provided the smoothness and appearance of concrete produced will be equivalent or better to that produced by the plywood concrete form panels.

b) Forms for Class D finished surfaces, except where concrete is placed against earth, shall be wood or steel or other compliance confirmed concrete form material.

D. ANCHORS

Anchors are to be placed by drilling holes and cleaning in accordance Section 03.15.00 –

Concrete Accessories and with manufacturers recommendations. Hole diameters are to be

USIBWC Solicitation Page-10 of 26 oversized in accordance with manufacturers recommendations. Drill holes are to be blown clean.

Prior to drilling holes for anchors, existing rebar shall be located with a Rebar Locator. The

Contractor shall not drill through existing rebar. Slight adjustments in bolt spacing, as need to miss existing rebar shall be discussed with and approved by the COR. Ten (10) percent of all anchors shall be tension tested to the safe working load of the anchor. Testing shall be done in accordance with ASTM E 488.

E. FORM TIES

A. Form ties shall be factory-fabricated metal ties, shall be of the removable or internal disconnecting or snap-off type, and shall be of a design that will not permit form deflection and will not spall concrete upon removal. Provide solid backing for each tie.

B. Except where removable tie rods are used, ties shall not leave holes in the concrete surface less than ¼ inch nor more than 1 inch deep and not more than 1 inch in diameter.

C. Removable tie rods shall be not more than 1½ inches in diameter. Plastic snap ties may be used in locations where the surface will not be exposed to view.

6.3 INSTALLATION

A. Forms shall be constructed true to the structural design and required alignment.

B. Forms shall be mortar tight, properly aligned, and adequately supported to produce concrete surfaces meeting the surface requirements and conforming to construction tolerance specified in

Section 03.31.00 Table.

C. Continuously monitor the alignment and stability of the forms during all phases to assure the finished product will meet the required surface class specified. Failure of any supporting surface either due to surface texture, deflection, or form collapse shall be the responsibility of the

Contractor as will the replacement or correction of unsatisfactory surfaces.

D. When forms for continuous surfaces are placed in successive units, care shall be taken to fit the forms over the completed surface to obtain accurate alignment of the surface and to prevent leakage of mortar.

E. Windows shall be provided in the upstream form to allow continuous concrete placement and worker access during initial placement. Windows shall also be used to distribute and vibrate the concrete placement throughout the height of the plug

F. Forms shall not be reused if there is any evidence of defects which would impair the quality of the resulting concrete surface. All surfaces of used forms shall be cleaned of mortar and any other foreign material before reuse.

G. Form ties that are to be completely withdrawn shall be coated with a non-staining bond breaker.

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2.5. CHAMFERING

A. All exposed joints, edges, and external corners shall be chamfered by molding placed in the forms unless the Contract Drawings specifically state that chamfering is to be omitted or as otherwise specified

B. Chamfered joints shall not be permitted where earth or rockfill is placed in contact with concrete surfaces.

C. Chamfered joints shall be terminated 12 inches outside the limit of the earth or rockfill so that the end of the chamfers will be clearly visible.

D. Grinding a "chamfered" edge after removal of forms is not acceptable. Chamfer strips shall be used in forms to apply chamfer.

2.6. COATING

A. Forms shall be coated with a form releasing agent before the form or reinforcement is placed in final position. The coating shall be used as recommended in the manufacturer's printed or written instructions.

B. Surplus coating on form surfaces and any coating on reinforcing steel and construction joints shall be removed before placing concrete.

2.7. FORM TIES AND ANCHORS FOR CONCRETE

A. Embed ties for holding forms.

B. Terminate the embedded portion of metal ties no less than 2 inches from any concrete surface exposed to water. Terminate ties not less than 2 diameters or twice minimum dimension of tie, whichever is greater, from other formed surfaces.

C. Install ties so ends or end fasteners can be removed without causing spalling at face of concrete.

D. Provide form anchors as required to ensure that concrete surfaces will meet specified tolerances.

Replace form anchors embedded in concrete which are loosened before placement of adjoining concrete with other supports firmly embedded in hardened concrete.

2.8. PRIOR TO PLACEMENT

A. Construct forms to produce a uniform and consistent texture and pattern on face of concrete.

Metal patches on forms are not permitted.

B.

C. The concrete plug downstream form shall be left in place. Complete all preparatory work before requesting permission to place concrete.

D.

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C. For forms to be left in place, use only material that is inert, non-biodegradable, and non-absorptive.

D. Construct all forms to permit their complete removal without marring or damaging the concrete.

Pieces of forms shall not be left embedded in the concrete.

E. Complete all preparatory work before requesting permission to place concrete.

2.9 Inspection

Forms and embedded items shall be inspected in sufficient time prior to each concrete placement to certify to the COR that they are ready to receive concrete. The results of each inspection shall be reported in writing using IBWC Form 238, Concrete Placement Card, prior to concrete placement. Submit field inspection reports for concrete forms and embedded items.

2.10. DURING CONCRETE PLACEMENT

A. Install sufficient plumb and string lines to monitor formwork positions before concrete placements.

B. Monitor plumb and string lines during concrete placement and correct deficiencies in formwork.

C. If the forms show signs of bulging or sagging at any stage of the placement, cease placement and remove the portion of the concrete causing this condition immediately if necessary.

E. Reset the forms and securely brace them against further movement before continuing the placement.

2.11. FORM REMOVAL

A. Concrete forms shall be removed when a minimum compressive strength of 2500 psi has been attained in the concrete and 3000 psi in the top injected grout: but not less than 21 days after concrete placement and 3 days after the top of plug grout placement.

B. Where forms support more than one element, the forms shall not be removed until the form removal criteria are met by all supported elements.

C. Remove forms within 24 hours after concrete has hardened sufficiently to prevent damage by form removal. Do not remove forms until concrete strength is such that form removal will not result in perceptible cracking, spalling, or breaking of edges or surfaces, or other damage to concrete.

D. Begin required repair and curing immediately after form removal.

E. Remove forms on upper sloping faces of concrete, such as forms on waterside of warped transitions as soon as concrete has attained sufficient stiffness to prevent sagging.

F. Loosen wood forms for wall openings as soon as loosening can be accomplished without damage to concrete to prevent excessive stress in concrete from swelling of forms. Construct forms for openings to facilitate loosening.

2.12. Formwork Supporting Weight of Concrete (Falsework)

A) Formwork and shoring shall not be removed until structural members have acquired sufficient strength to safely support their own weight and any construction or other superimposed loads to which the supported concrete may be subjected.

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B) As a minimum, forms shall be left in place until control concrete test cylinders indicate evidence the concrete has attained at least 100 percent of the compressive strength required for the structure in accordance with the quality and location requirements.

C) All removal shall be accomplished in a manner which prevents damage to the concrete and ensures the complete safety of the structure. Any damage to the exposed plug or existing concrete

Monolith 10 shall be repaired as specified in Section 03.31.00.

D) Fill and smooth finish voids at joints in form lining or sheathing.

E) Repair damaged concrete in accordance with Section 03.31.00.

F) Allow at least 1 curing day after the concrete has achieved initial set before placing strain on projecting reinforcement to prevent damage to the concrete.

2.13. CURING

All concrete surfaces exposed upon removal of forms shall immediately be cured per Section

03.31.00.

2.14. REINFORCING STEEL

A. Compliance Confirmed Mills

1. Before furnishing steel, producing mills of reinforcing steel must be compliance confirmed in accordance with this Section.

2. Provide written certification of epoxy coating material.

3. Reinforcing steel obtained from noncompliance confirmed sources will not be accepted.

4. Verify any Buy American Acts that are in this Contract.

B. Deformed Bar Reinforcement.

Reinforcing steel bars shall conform to ASTM A615, Grade 60 for bar sizes 3 through 11.

C. Epoxy Coating

Provide epoxy coated bars in accordance with ASTM A775.

D. Wire Reinforcement

Reinforcement must conform to ASTM A1064, Grade 70.

E. Weldable Reinforcing Steel

Reinforcing steel to be welded must comply with ASTM A706 or have a carbon equivalent (C.E.)

of at most 0.55%. A report of chemical analysis showing the percentages of elements necessary to establish C.E. is required (to be submitted to the COR) for reinforcing steel that does not meet

ASTM A706 to be structurally welded. Calculate C.E. using the following formula:

F. Any reinforcing steel that does not meet the requirements of this Section shall not be used in the project.

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2.15. WIRE TIES

Wire ties shall be 16 gauge or heavier steel wire, epoxy-coated or plastic-coated.

3. STORAGE

A. The Contractor shall store steel reinforcement above the ground on platforms, skids, or other supports and protect it from damage and deterioration.

B. Epoxy-coated reinforcing bars shall be covered using opaque polyethylene sheeting or other suitable opaque material if they are to be stored outdoors for more than two months.

C. Synthetic or padded slings shall also be used, and at no time shall epoxy-coated reinforcing bars be lifted using bare chains or cables.

D. Bundles of epoxy-coated reinforcing bars shall be stored off the ground on suitable materials, such as timber cribbing.

E. Use reinforcement free from defects such as cracks and delamination.

F. Rust, surface seams, surface irregularities, or mill scale will not be cause for rejection if the minimum cross-sectional area of a hand wire-brushed specimen meets the requirements for the size of steel specified.

3.1. SPLICES

A. The Contractor shall lap-splice, weld-splice, or mechanically splice bars as shown on the Contract

Drawings. Splices in steel bars shall be made only as required. Bars may be spliced at alternate or additional locations at no additional cost to the Government subject to COR compliance confirmation.

B. All splices shall meet ACI MNL-66.

B. Lap Splices shall be used only for bars smaller than #11. Bar laps shall be placed in contact and securely tied. Lengths of laps for bars shall conform to the requirements of ACI 350, except when otherwise shown on the Contract Drawings.

D. Butt-Splices

1. Do not flame-cut reinforcement. Saw or shear-cut only when approved.

2. Do not weld or mechanically couple coated reinforcing steel except where specifically shown on the Contract Drawings or as directed by the COR.

3. Remove the epoxy coating at least 6 inches beyond the weld limits before welding and 2 inches beyond the limits of the coupler before assembly. After welding or coupling, clean the steel of oil, grease, moisture, dirt, welding contamination, and rust to a near white finish.

4. Check the existing epoxy for damage. Remove any damaged or loose epoxy back to sound epoxy coating.

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5. After cleaning, coat the splice area with epoxy repair material to a thickness of 7 to seventeen

(17) mils after curing. Apply a second application of repair material to the bar and coupler interface to ensure complete sealing of the joint.

6. Except as provided herein, all splicing shall be in accordance with approved splicing procedures and the requirements of ACI 350. Bars larger than #11 shall be spliced with mechanical connectors or butt-welded in accordance with ACI 350. The splice shall be submitted to the COR for compliance confirmation.

7. Butt splices shall develop 125% of the specified minimum yield tensile strength of the spliced bars or of the smaller bar in transition splices.

8. Adequate jigs and clamps or other devices shall be provided to support, align, and hold the longitudinal centerline of the bars to be butt spliced in a straight line.

3.2. ADHESIVE ANCHORS

A. Anchors for Shear Brackets shall be the type and size shown on the drawings. Prior to drilling holes for anchors, existing rebar shall be located with a Rebar Locator. The Contractor shall not drill through existing rebar. Slight adjustments in bolt spacing, as need to miss existing rebar shall be discussed with and approved by the COR. Adhesives shall be installed per manufacturer recommendations and as shown on the Drawings and specified in Section 03.15.00 – Concrete

Accessories.

B. Anchor Bolt Testing Ten (10) percent of all anchors shall be tension tested to the safe working load of the anchor. Anchors shall be individually tested. Load shall be applied and held for a minimum of 3 minutes at the manufacturer’s Safe Working Load. Static testing shall be done in accordance with ASTM E 488. Tested anchors shall be randomly selected by the COR.

4. GENERAL CONCRETE

A. The Contractor shall furnish hydraulic cement concrete for concrete construction.

B. The Contractor shall furnish all materials, equipment, and incidentals, and construct concrete structures as shown on the Contract Drawings.

C. While a Contractor may use several different concrete mixes to complete construction, each independent section of a structure shall be constructed with only one concrete mix.

1. An independent section of a structure is completely isolated by expansion, isolation, or contraction joints.

2. A duplicate concrete mix provided by different suppliers shall be viewed as different concrete mixes.

4.1. DESIGN REQUIREMENTS

A. Specified compressive strength, Feet Cubic (fc), shall be as shown in Table below.

Minimum Compressive Strength (fc) Structure of Portion Structure

3000 psi Stop Logs

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B. Maximum Water-Cementitious Materials (W/CM) ratio by mass shall be as noted in Table below.

5.0 Surface Preparation and Painting

A. Surfaces for all stop logs metal hardware shall be cleaned before applying paint or surface treatments.

The Contractor shall remove deposits of grease or oil in accordance with the Society for Protective

Coatings (SSPC) SP 1, prior to further cleaning. Solvent cleaning shall be accomplished with mineral spirits or other low toxicity. Items that are not to be coated shall be protected from damage.

B. Surfaces to be painted shall be cleaned to near white blast in accordance with SSPC-SP 10 National

Association of Corrosion Engineering (NACE) NACE No. 2.

C. The Contractor shall comply with all aspects of OSHA 29 CFR 1926.62 “Lead in Construction

Regulations” with regards to disturbance of the lead-based paint materials when performing their

Work.

D. The Contractor shall be responsible for segregating, containerizing, temporary storage, loading, transportation, and disposal of all hazardous and non-hazardous waste materials generated during paint removal activities in accordance with Federal, State of Texas, and local regulations.

E. New primer shall be alkyd based and rust inhibitive. Primer shall be lead and chromate free.

F. New paint shall be lead free and shall be TT-E-489 Class A or equivalent.

G. The Contractor shall have a certified paint inspector onsite during all work phases. The inspector shall inspect and document all work phases and operations on a daily basis.

6.0 Clean-Up and Disposal of Waste Materials

A. The Contractor shall be responsible for the cleanup and disposal of waste materials and rubbish from the site, field office(s), and staging area(s).

B. The disposal of waste materials and rubbish shall be in accordance with applicable Federal, state, and local laws and regulations and with the requirements in this Contract. Should a conflict exist in the requirements for cleanup and disposal of waste materials, the most stringent requirements shall apply.

1. All waste unless otherwise noted in these specifications shall be disposed of at a licensed landfill or waste disposal facility.

2. Recyclables

a. The Contractor shall dispose of recyclable and reusable products through waste disposal only as a last option.

b. Scrap metal shall be donated or sold to scrap dealers or recycle centers whenever possible.

C. No excess materials shall be deposited within Government property, unless compliance confirmed by the Government.

Maximum Water-Cement Ratio (W/CM) Structure or Portion of Structure

0.50 ALL

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D. The Contractor shall maintain work and storage areas free from accumulations of waste materials and rubbish and before completing the work, shall remove all temporary facilities, including, buildings, unused materials, concrete forms, and other like materials, which are not a part of the permanent work.

6.1 Warranty

A. Warranties shall be provided in accordance with FAR 52.212-4(o).

B. The Contractor shall warrant that work performed under this PWS conforms to the Contract requirements and is free of any defect in equipment, material, or workmanship performed by the

Contractor or any subcontractor or supplier at any tier for a period of at least One (1) year.

1. The Contractor is responsible for providing warranties on items when the manufacturer's warranty is less than the time indicated in Paragraph 6.1C or when the manufacturer's warranty does not cover full repair and/or replacement as appropriate.

C. The Contractor shall obtain warranties from responsible subcontractors, suppliers, and manufacturers, within sixty (60) days after completion of the applicable item of work, but no later than the date of warranty commencement.

D. Starting date of warranty is date of date of Government acceptance of the work.

E. A warranty requires that if a warranted item fails to meet Contract requirements, it shall be repaired, replaced, or have other remedial actions taken to bring the item into compliance with the Contract requirements. Any item damaged due to failure or malfunction of item warranted under this Contract shall be repaired or replaced at no cost to the Government.

F. The Contractor shall supply the CO with a telephone number, mailing address, email address, and contact name for the point of contact for any required warranty work.

SECTION 7

EXISTING CONDITIONS

7.0 General

A. There are three Penstock intake gates (one per unit) and the fourth Penstock never had been used at the Falcon Power Plant. The gates are roller gates affixed to a large vertical hydraulic cylinder. The gate hydraulic system is original, and the last rehabilitation on gates #1,#2 and #3 were performed in

2021. The 4th gate never had been operated since there is not Hydraulic System to open and close the gate The last rehabilitation on penstock gate #4 is unknown and there is no records about any maintenance performed on this gate. The New Concrete Stop Logs will help to secure any malfunction or prevent further damage on current gate for Penstock #4.

7.1 Government Furnished Utilities

A. The Government will not be furnishing any utilities for this project including, but not limited to electricity, telephone, sewer, and natural gas.

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7.2 Use of Government Land

A. USIBWC property is available for use as the Contractor's staging and/or storage areas, subject to the approval of the COR. The Contractor shall preserve and protect existing features, trees, and vegetation to the maximum extent practicable.

B. Housing for Contractor personnel will not be permitted on Government land.

7.3 Hazardous Materials

A. The Contractor is responsible for evaluating the existing systems to determine the presence of lead or asbestos-containing materials.

B. The Contractor shall provide a finding report to the COR to include a plan for handling and proper disposal of lead and/or asbestos-containing materials prior to the removal of the existing systems.

SECTION 8

QUALITY REQUIREMENTS

8.0 Common Product Requirements

A. Materials Certification

The Contractor shall submit a materials certification package to COR which contains a checklist and supporting documentation for all materials used on the project. The supporting documentation shall consist of a summary of all documentation practices utilized for material acceptance and explanations of any deficiencies noted on the checklist.

1. Material certifications shall ensure that all items meet the Buy American Act (41 USC 10a -

10d).

B. Source Control

1. The Contractor shall use only materials that meet the Contract requirements.

2. Unless otherwise specified or compliance confirmed, the Contractor shall use new materials for the work. Material can be reused onsite upon written approval of COR.

3. All materials installed shall be free of defects.

4. The Contractor shall secure the Government’s compliance confirmation of the proposed source of materials to be used before their delivery.

C. Quality Control / Quality Assurance of Materials

1. Source Limitations

To the greatest extent possible for each item of work, the Contractor shall provide materials of a singular generic kind from a single source.

2. Compatibility of Options

Where more than one choice is available as options for Contractor's selection of a product, material, or equipment, the Contractor shall select an option which is compatible with other products, materials, or equipment. Compatibility is a basic general requirement of product, material, and equipment selections.

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3. Field Measurements

Verify field measurements, lines, grades, locations, and details at the jobsite prior to fabrication.

It shall be the Contractor's responsibility to conform to and satisfy actual field conditions, for accuracy of dimensions, proper fit, and for adequacy of use intended.

4. The Contractor shall correct or remove materials that fail to meet Contract requirements or that do not produce satisfactory results. The Contractor shall reimburse the Government for cost incurred if additional quality assurance sampling and testing is required by a change of source.

5. Materials not meeting Contract requirements will be rejected unless the Government approves corrective actions in writing. Upon rejection, the Contractor shall immediately remove and replace rejected materials. Should the Contractor fail to comply with the removal of rejected materials, the Government may remove and replace defective material and the cost of testing, removal, and replacement will be deducted from the Contractor’s final payment.

D. Hazardous Materials

The Contractor shall use materials that are free of hazardous materials. The Contractor shall notify the Government immediately when a visual observation or odor indicates that materials in required material sources or on sites owned or controlled by the Government may contain hazardous materials.

E. Surplus Materials

1. The Contractor shall take ownership of surplus materials unless otherwise indicated in the

Contract documents.

2. The Contractor shall remove and dispose of materials in accordance with Paragraph 0 If requested or otherwise noted in these specifications, the Contractor shall provide an appropriate level of documentation to verify proper disposal.

F. Storage and Protection

1. Designate receiving/storage areas for incoming products so that they are delivered according to installation schedule and placed convenient to work area to minimize waste due to excessive materials handling and misapplication.

2. Store and protect products in accordance with manufacturers' instructions.

3. Store with seals and labels intact and legible.

4. Prevent contact with material that may cause corrosion, discoloration, or staining.

5. Provide equipment and personnel to store products by methods to prevent soiling, disfigurement, or damage.

6. The Contractor shall store and handle materials to preserve their quality and fitness for the work and shall store materials so that they can be easily inspected and retested. When required by the

Government, the Contractor shall protect the material with cover, on wooden platforms, or on other hard, clean surfaces as necessary.

8.1 Qualifications and Certifications

A. All Contractors that perform or build New Stop Logs shall have enough experience working with concrete and designing wood forms to build these Stop Logs prior to contract award, and shall remain so certified with any construction license for the duration of the project.

B. Concrete inspectors shall be a PLUS and shall be included in the Proposal.

C. The Contractor shall submit all certificates and qualification documents with the offer for evaluation and approval by the government prior to contract award.

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SECTION 9

DELIVERABLES

9.0 General

A. Deliverables include, but are not limited to:

1. Project Schedule

a. Project Schedule is to be delivered to COR within seven (7) Calendar Days of contract award.

2. Licenses and Certifications

a. The Contractor shall submit to the COR all Licenses and Certifications to perform this type of work.

3. Material and Product Submittals

a. The Contractor shall provide a list of materials used to perform the work and shall submit manufacturers’ specifications and recommendations for approval by USIBWC prior to purchase.

4. Work Plan

a. The Contractor shall provide to the COR a plan outlining the procedures to perform the work with minor interruption to the power plant’s daily operations.

b. The Contractor shall provide a screening list to perform a start/final inspection of the penstock gate.

5. Reports

a. The Contractor shall provide to the COR the draft and final report on the Full Hydraulic

Structural Steel inspection, documentation of the maintenance and repair activities, maintenance recommendations, photos, videos, and supporting documentation.

b. The Contractor shall provide two hard copies of the report and an electronic file (PDF format).

6. Safety documents

7. Warranty

SECTION 10

PROJECT COORDINATION & ADMINISTRATION

10.0 General

A. The Contractor shall provide all materials, equipment, labor, and services required by this

Performance Work Statement to perform the work for the Contract sum and within the Contract period of performance.

B. The Contractor shall be responsible for ensuring that all its suppliers, manufactures and subcontractors have reviewed all applicable documents relative to their work. The Contractor shall provide all labor, material, equipment, and services not provided by the Contractor’s suppliers, manufacturers, fabricators, and/or subcontractors.

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10.1 Security

The Contractor is responsible for securing the work site, equipment, and materials from vandalism and theft.

10.2 Safety

A. The Contractor is solely responsible for worksite safety while performing work or inspections on

Government property. The Contractor shall implement a safety program that protects the lives and health of personnel in the project area, prevents damage to property, and avoids work interruptions.

The Government is not responsible for accidents or injuries sustained by Contractor employees, guests, or invitees of the Contractor, its agents, or its subcontractors, unless the accident was directly caused by the authorized action of a Government employee in the performance of his/her duties.

B. The Contractor is responsible for being cognizant of and ensuring compliance with the requirements set forth. Such responsibility shall apply to both the Contractor’s operations and those of the

Contractor’s subcontractors.

C. The Contractor shall comply with all provisions of all applicable regulations of the Occupational

Safety and Health Administration (OSHA), 29 CFR 1910, Occupational Safety and Health Standards, and 29 CFR 1926, Construction Standards.

1. The OSHA 29 CFR 1910 and 29 CFR 1926 can be accessed at http://www.osha.gov or http://www.gpo.gov/fdsys/.

D. The Contractor’s personnel shall be required to use appropriate personal protective equipment such as, but not limited to hard hats, safety goggles, welding shields, face shields, protective footwear, protective gloves, and hearing protection.

E. The Contractor shall perform daily housekeeping. The Government will not provide trash dumpsters.

SECTION 11

PROJECT MEETINGS

11.0 General

A. The Contractor, the COR, or the CO may schedule project meetings at any time.

B. When USIBWC schedules a meeting, the COR shall inform participants and others involved and individuals whose presence is required, of date and time of each meeting. The COR shall prepare the meeting agenda and distribute to all invited attendees.

C. When the Contractor schedules a meeting, the Contractor shall inform participants and others involved and individuals whose presence is required, of date and time of each meeting. The Contractor shall prepare the meeting agenda and distribute to all invited attendees.

D. The following meetings are anticipated, and the Contractor shall identify them in the Schedule:

1. Kickoff Meeting

2. Progress Meetings http://www.osha.gov/ http://www.gpo.gov/fdsys/

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11.1 Kickoff Meeting

A. After award of the Contract, the COR will coordinate with the Contractor to schedule a Kickoff

Meeting. The meeting shall take place prior to the beginning of any Contract work.

B. The purpose of the meeting is to introduce project personnel and to review responsibilities and procedures.

C. The Contractor shall reach an understanding with the Government regarding the project requirements as stated is this Performance Work Statement. This understanding shall be documented in writing and approved by the CO after the Kickoff Meeting.

D. Attendees include, but are not limited to:

1. Contractor's Project Manager

2. CO

3. COR

4.