W912ES22Q00850002.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The reason for this amendment is to change the date the system needs to be install by to 30 June 2023. It also w ill extend the due date for quotes.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 14

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 29-Sep-2022

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912ES22Q0085

X 9B. DATED (SEE ITEM 11)

09-Sep-2022

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

29-Sep-2022

CODE

CONTRACTING DIVISION

USACE, ST PAUL

332 MINNESOTA STREET

SUITE E1500

ST PAUL MN 55101-1323

W912ES 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912ES22Q0085

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00 10 00 - SOLICITATION

The required response date/time has changed from 26-Sep-2022 02:00 PM to 11-Oct-2022 02:00 PM.

The Issued By organization has changed from

CONTRACTING DIVISION

USACE - ST PAUL

332 MINNESOTA STREET

SUITE E1500

SAINT PAUL MN 55101

to

CONTRACTING DIVISION

USACE, ST PAUL

332 MINNESOTA STREET

SUITE E1500

ST PAUL MN 55101-1323

The description of performance 52.211-10 has been added.

The contractor period of performance end 45 has been deleted.

The following Delivery Schedule item for CLIN 0001 has been changed from:

DELIVERY DATE QUANTITY SHIP TO ADDRESS DODAAC /

CAGE

60 dys. ADC 1 BLACKHAWK PARK-LAFARGE L

ERIC HAMMER

E590 CTY RD BI

DESOTO WI 54624-9705

(651) 290-5996 FOB: Destination

965702

To:

DELIVERY DATE QUANTITY SHIP TO ADDRESS DODAAC /

CAGE

30-JUN-2023 1 BLACKHAWK PARK-LAFARGE L

ERIC HAMMER

E590 CTY RD BI

DESOTO WI 54624-9705

(651) 290-5996

The following Delivery Schedule Item has been deleted from CLIN 0002:

CAGE

60 dys. ADC 1 BLACKHAWK PARK-LAFARGE L

ERIC HAMMER

E590 CTY RD BI

DESOTO WI 54624-9705

(651) 290-5996

The following Delivery Schedule item has been added to CLIN 0002:

CAGE

10 dys. ADC 1 CONTRACTING DIVISION

THEODORE R HECHT JR

USACE, ST. PAUL

332 MINNESOTA STREET

SUITE E1500

ST PAUL MN 55101-1323

6512905415

966323

SECTION 00 21 00 - INSTRUCTIONS

The following have been modified:

SCOPE OF WORK

PHOTOVOLTAIC (SOLAR) SYSTEM INSTALL FOR BLACKHAWK PARK

U.S. ARMY CORPS OF ENGINEERS

POOL 09 MISSISSIPPI RIVER

DESOTO, WISCONSIN

The Contractor will design and install a 7kW photovoltaic (PV) systems, with lightning protection, on the Administrative Office Building roof located at E590 Cty RD BI DeSoto WI 54624.

1. General

1.1 Project Description

The Contractor will design and install a grid-connected, 7kW photovoltaic (PV) systems, with lightning protection, on the Administrative Office Building roof located at E590 Cty RD BI DeSoto WI 54624. The Contractor shall be responsible for all costs and materials related to this project which include but are not limited to design, PV modules, inverters, mounting hardware, labor, permitting and application cost. A site visit is recommended and

Admin Building can be arranged with the POC; Eric Hammer.

Figure 1. Aerial overview of Blackhawk Park.

1.1.1 Administrative Office Building

The Administrative Office Building has a standing seam metal roof with a 5/12 pitch. The exposed Southern face of the roof is approximately 16’8”X58’ and faces at an azimuth of 180 degrees. Figures 2 and 3 show the exterior of the building and general locations of the utility meter and service panel.

Figure 2. Administrative Building.

Figure 3. Administrative Building equipment locations.

1.2 Schedule

This work shall be completed by 30 June 2023.The contractor shall provide a work schedule in writing at least 1 week prior to the start of work. Point of contact for questions is Eric Hammer, Park Ranger at Blackhawk Park, De Soto, WI. (608) 648-3314.

1.3 Interconnection and Electric Permit

The Contractor must obtain electrical permit and interconnection agreement with Vernon Electric Coop and pay all associated fees. Point of Contact: Dave Maxwell dmaxwell@vernonelectric.org

1.4 Safety

The contractor must perform all work in a safe manner and in accordance with U.S. Army Corps of Engineers EM 385-1-1, Safety and Health Requirements Manual.

1.5 Submittals

The Contractor shall submit shop drawings and material certifications electronically via email to the Contracting Officer’s Representative (COR) after award and prior to construction activity. No product submittals will be made prior to the contractor obtaining the interconnect agreement with the Utility.

Government review turnaround time will be within five (5) business days from the date of receipt by the Contracting Officer. The Contractor will be notified by the Contracting Officer of the results of the review and of final approval. Any work performed prior to notification of approval shall be at the Contractor's own risk.

Government approval is required for submittals with a "G" designation; submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.

The following submittals are required if used in the system design:

a. Product Data Combiner Boxes; G Inverters; G Microinverter CEC Efficiency; G String Inverter Efficiency; G Roof Mounting Structure for Modules; G Photovoltaic Module Back sheet; G Photovoltaic Module Encapsulant; G Photovoltaic Modules; G System Monitoring; G Meter Socket; G Disconnect Switches; G

b. Shop Drawings Schematic Diagrams Interconnections Diagrams; G Installation Drawings; G

c. Design Data System Sizing Calculations; G System performance Calculations; G

d. Test Reports NABCEP Acceptance Checks and Tests; G

e. Certificates Installer Materials; G Warranty; G

f. Manufacturer’s Instructions Installation Instructions mailto:dmaxwell@vernonelectric.org

g. Lightning Protection System Overall Lightning Protection System; G Each Major Component; G

1.6 Quality Assurance

1.6.1 Regulatory Requirements

Provide equipment, materials, installation, and workmanship in accordance with the mandatory and advisory provisions of National Fire Protection Association (NFPA) 70 unless more stringent requirements are specified or indicated.

1.6.2 Installer

Submit North American Board of Certified Energy Practitioners (NABCEP) PV Installation Professional certification. In addition, the firm and/or lead installer shall provide a detailed list of at least four successful projects that, in aggregate, equal or exceed the size of the proposed project. Certification and detailed list of four or more projects shall be submitted with the firm’s quote.

1.6.3 Materials

Provide materials and equipment that are products of manufacturers regularly engaged in the production of such products which are of equal material, design, and workmanship. Submit proof of compliance with requirements of Underwriters Laboratories (UL), where material or equipment is specified to comply. The label of or listing in UL Electrical Construction Directory will be acceptable evidence. In lieu of the label or listing, a written certificate from an approved nationally recognized testing laboratory (NRTL) equipped to perform such services, stating that the items have been tested and conform to the requirements and testing methods of UL may be submitted.

• Alternative Qualifications Products having less than a 2-year field service record will be acceptable if the manufacturer has been regularly engaged in the design and production of solar photovoltaic products for a minimum of 5-years.

Similar photovoltaic products must have been in satisfactory commercial or industrial use for 5-years prior to the solicitation closing date and must have been on sale on the commercial market through advertisements, manufacturers' catalogs, or brochures during the 5-year period.

• Material and Equipment Manufacturing Date Products manufactured more than 1-year prior to date of delivery to site must not be used, unless specified otherwise.

1.6.4 Bill of Materials

Submit a Bill of Materials listing each product being incorporated into the system. Bill of Materials includes a general description of the product, quantity, and exact manufacturer's model number. Where the manufacturer's model number does not fully identify the product, list options, accessories, or custom features by additional descriptions.

1.6.5 System Performance Calculations

Submit system performance calculations to show that the components provided will produce the minimum required production of power in accordance with PERFORMANCE REQUIREMENTS paragraph.

1.7 Warranty

The equipment items must be supported by service organizations which evaluate and respond within 2 business days during the warranty period of the contract.

1.7.1 Solar Photovoltaic Modules

Furnish the solar photovoltaic module manufacturer's warranty. The warranty must be a 25-year linear 80 percent (minimum) power warranty (at the end of the 25th year after purchase an actual minimum power output of 80 percent based on the nameplate rating must be achieved) and not less than 10-years for workmanship material and manufacturing defects from the date of manufacture.

The warranty must state that the malfunctioning solar photovoltaic module must be exchanged by the manufacturer. The replacement solar module must be identical to, or an improvement upon, the original design of the malfunctioning solar module.

1.7.2 Inverters

Furnish the inverter manufacturer's warranty. The warranty period must be 15 years (minimum) from the date of manufacture. Inverter device installation, transportation, and on-site storage must not exceed 12 months, thereby permitting 14 years of the 15-year warranty to be in service and energized.

The warranty must state that the malfunctioning inverter must be exchanged by the manufacturer. The replacement inverter must be identical to, or an improvement upon, the original design of the malfunctioning inverter.

2. Products

2.1. System Description

The PV system described in this document is of the grid-connected type and does not include battery/backup storage or secondary electrical generation devices. PV system feeds AC power into the local services when solar energy is available and immediately disconnects from the grid upon loss of grid power to the service in accordance with Institute of Electrical and Electronics Engineers (IEEE) 1547and local utility regulations.

PV system must comply with these specifications, all applicable codes, and all local authorities having jurisdiction.

System must comply with all policies and standards required by the electrical utility having jurisdiction and all applicable incentive program guidelines. PV system equipment includes, but is not limited to, PV modules and electrical insulating components such as encapsulants and back sheets, raceways, inverters, combiner boxes, disconnect switches, wire, conduit, junction boxes, mounting hardware, monitoring and communication equipment.

2.1.1. System Requirements

Both systems must conform electrical installations to IEEE C2, NFPA 70, NFPA 780, and requirements specified herein.

a. Solar photovoltaic system characteristics provided include:

7kw DC /5kW AC output Minimum 9,000 kWh AC per year 240-volt single phase

b. All equipment must be listed and labeled in accordance with OSHA-listed nationally recognized testing laboratories (NRTL) and installed in accordance with the listing requirements and the manufacturer's instructions.

c. Provide all accessories needed for a complete, mechanically secure, operational grid-tied PV system to the building’s roof.

d. Wiring and connections of inverters, PV source circuits, AC branch circuits, and all interconnections must be rated at a minimum for IP65 in accordance with National Electrical Manufacturers Association (NEMA) Independent Electrical Contractors (IEC) 60529.

e. Includes a lightning protection system.

2.1.2. Performance Requirements

System components provided must be selected to achieve a minimum calculated energy production of 9,000 kWh per year as required by American Society of Heating, Refrigerating, and Air-Conditioning Engineers

(ASHRAE) 189.1.

2.2. Photovoltaic Modules

The contractor must submit a Letter of Conformance to certify the consistency and quality of materials used. Go to: https://www.wbdg.org/ffc/dod/unified-facilities-guide-specifications-ufgs/ufgs-26-31-00

2.2.1. Photovoltaic Modules General Requirements

a. PV modules must be UL 1703 listed and manufactured in an ISO 9001 certified facility.

b. PV modules must be of polycrystalline technology and for rack-mounting.

c. PV module efficiency must be greater than 15 percent.

d. PV modules must be of the same manufacturer and model number and consistent sub-components.

e. Submit on cutsheets, PV module performance data from the manufacturer that must include flash test data in accordance with IEC 61853-1, and temperature coefficients at: Standard Test Condition (STC), nominal operating cell temperature (NOCT), low irradiance conditions (LIC), high temperature conditions (HTC), and low temperature conditions (LTC).

f. Photovoltaic wire, wiring methods, and utilization of locking-type connectors must comply with the requirements of NFPA 70. Provide Underground Service Entrance (USE)-2 or Rubber High Heat (RHH) or Rubber Heat Water (RHW)-2 wire, and sunlight-resistant wire when exposed to sunlight.

2.2.2. Crystalline Photovoltaic Module Back sheet

a. Back sheet component must consist of a tri-layer construction (minimum thickness of 250 microns 9.8 mils) with outer layers of polyvinyl fluoride (PVF) and an inner layer of polyester for crystalline-silicon modules with a maximum system voltage of 1000 VDC.

b. Alternate polymeric back sheets consisting of different chemical composition, thickness, or construction must fulfill the safety and performance specifications and acceptance criteria in Table 1. The required component properties in Table 1 must be verified by a test report provided by an OSHA-listed nationally recognized testing laboratory (NRTL) and a cutsheet submitted.

Table-1 PV Module Back sheet Component Safety and Performance Items Test Methods Specification

Tensile Strength (MPa) ASTM D882 >=100 (TD)

>=100 (MD)

Elongation at Break (percent) ASTM D882 >=80 (TD)

>=100 (MD)

Dimensional Stability (percent, 150 degrees C, 0.5 h)

ASTM D882 <=1.0 (TD)

<=1.0 (MD)

Breakdown Voltage (kV) ASTM D149 >=18 WVTR (g/m2 day, 37.8 degrees C, 100 percent RH)

ASTM F1249 <=2.5

Interlayer Peeling strength (N/cm) ASTM D1876 >=4 Peeling Strength with EVA (N/cm) ASTM D903 >=40 Damp Heat (85 degrees C, 85 percent RH, 100 hrs) -Color Change delta b -Elongation Retention (percent) -Appearance

ASTM E1171

ASTM E308/ASTM D2244

ASTM D882/ASTM D5870

<=2.5 >=70

No cracking or delamination.

UV Exposure Irradiance of 0.55 W/m^2 at 340 nm (61 W/m^2) using a xenon lamp with a daylight filter (outer layer). Exposure is

ASTM G155

ASTM E308/ASTM D2244

ASTM D882/ASTM D5870

ASTM D882/ASTM D5870

<=2.0 >=70 >=70

No cracking or delamination.

4200 hours (260 kWh/m^2 total UV (300-400 nm)) -Color Change delta b -Elongation Retention (percent) - Tensile Retention (percent) -Appearance

2.3. Inverters

a. Array-to-inverter kW ratio must not exceed manufacturer recommendations. Inverter must be IEEE 1547 compliant, listed to UL 1741, comply with the latest applicable American National Standards Institute (ANSI) and Federal Communications Commission (FCC) standards and addenda, and inspected before commissioning, testing, and operation of the system. Submit documentation validating system performance requirements.

b. Inverter must be approved by FCC Part 15, Class A as an unintentional radiator.

c. Provide inverter with anti-islanding protection to prevent back-feeding inverter generated power to the grid in the event of a utility outage. Anti-islanding protection must be listed to UL 1741 and IEEE 1547.

d. Overcurrent protection, ground fault protection, arc fault circuit interrupter (AFCI), and rapid shutdown must comply with the requirements of NFPA 70.

e. Match inverter DC input to the design of the PV module array outputs and account for the following:

1. The inverter low voltage is 50 percent of the maximum system voltage, to account for 25-year degradation.

f. Inverter must include AC and DC disconnecting means. DC and AC disconnecting means must be listed with ratings suitable for the intended use and purpose. System disconnecting means must meet the requirements of NFPA 70.

2.3.1. String Inverters

a. Submit String Inverter California Energy Commission (CEC) Efficiency as verified by CEC SAND2007-5036 of having a weighted average inverter power conversion efficiency of 96 percent or greater.

b. Allow the use of DC optimizers provided that a design which coordinates the DC optimizers and the inverter(s) is approved by the Contracting Officer

2.3.2. Micro Inverters

a. Provide micro-inverters that comply with applicable requirements in article INVERTER

b. Submit Microinverter CEC Efficiency as verified by CEC SAND2007-5036 of having a weighted average inverter power conversion efficiency of 96 percent or greater.

c. Inverter must feature maximum power point tracking (MPPT).

2.4. Combiner Boxes

a. All combiner boxes must be listed to UL 1741, and inspected before commissioning, testing, and operation of the system.

b. Provide combiner boxes support structure mount, NEMA 3R outdoor stainless-steel enclosures in accordance with NEMA 250.

c. Supply combiner boxes designed for use with the inverter provided and coordinated to the specific PV source circuit design.

d. Provide overcurrent protection and output disconnecting means that comply with the requirements of

NFPA 70.

2.5. Meter Socket

a. Provide 320-amp rated socket meeting the requirements of St. Croix Electric for utility interconnection.

2.6. Roof Mounting Structure for Modules

a. Provide fixed tilt racking compliant with UL 2703

b. Racking and PV array, including modules, hardware, and attachments, must withstand snow loads and wind loads as required by ASCE 7-16 and ICC IBC.

c. Provide the mechanical hardware for mounting the PV arrays and all other hardware required for assembling the PV modules, and the attachments to the building structure.

d. Use array mounting hardware compatible with the site considerations and environment. Select mechanical hardware for corrosion resistance and durability. Use a stainless steel, galvanized steel, or aluminum support structure. Do not use wood or plastic components for support.

2.6.1 Mounting System Base Supports

Fabricate with fastening points integral to the mounting structure. Mounting system support must be permanently affixed stanchions that are anchored to the building structure. Coordinate height with thickness of roof insulation.

2.6.2 Flashing Boot

Fabricate for precision fit over base support. Coordinate height with base supports.

2.6.3 Base Cap

Fabricate to overlap base support and flashing boot a minimum of 2 inches.

2.6.4 Base Cap Gasket

EDPM with self-adhesive closed cell foam of other gasketing material compatible with the roofing material.

2.6.5 Hardware

Bolts, nuts, washers, and screws must be 18-8 stainless steel.

2.7. PV System Monitoring

a. Provide system monitoring panel

2.8. PV Equipment and Warning Labels

a. Provide PV equipment with UL 969 weather-resistant marking and warning labels in compliance with

NFPA 1 and NFPA 70.

2.9 Grounding and Bonding

a. Provide properly sized equipment grounding conductors. Equipment grounding conductors must be insulated stranded copper, except that sizes 10 AWG and smaller must be solid copper. Insulation color must be continuous green for all equipment grounding conductors, except that wire sizes 4 AWG and larger shall be identified per NFPA 70.

b. Provide grounding lugs for aluminum PV solar module frames of either stainless steel or tin-coated copper.

c. Bonding conductors must be bare stranded cooper, except that sizes 10 AWG and smaller must be bare solid cooper.

2.10Disconnect Switch

a. Provide disconnect switch meeting the requirements of Vernon Electric Cooperative. Ensure safety switches comply with NEMA KS 1 and are the heavy-duty type. Ensure fused switch fuse holders comply with UL 428-1. Ensure switch construction is such that, when the switch handle is in the “ON” position, the cover or door cannot be opened. Cover release device is coinproof and so constructed that an external tool is used to open the cover. Make provisions to lock the handle in the “OFF” position, Ensure the switch is not capable of being locked in the “ON” position.

2.11Lightning Protection System

a. Provide a lightning protection system consisting of the latest UL listed products of a manufacturer regularly engaged in the production of lightning protection system components. Comply with NFPA 70, NFPA 780, and UL 96.

3. Execution

3.1. Installation Instructions and Installation Drawings

a. Complete all electrical work in accordance with NFPA 70.

b. Follow the manufacturer's installation recommendations to ensure no electricity is being fed to the grid and that all available disconnects are in the open position and fuses are not installed during wiring operations. Utilize on-site measurements in conjunction with engineering designs to accurately cut wires and layout before making permanent connections. Locate wires out of the way of windows, doors, openings, and other hazards. Ensure wires are free of snags and sharp edges that have the potential to compromise the wire insulation. If the system is roof-mounted, it must have direct current ground fault protection in accordance with NFPA 70. Ensure breakers in combiner box are in the off position (or fuses removed) during combiner box wiring.

c. Attach solar PV modules to the mounting structure according to the manufacturer's instructions and approved plans.

3.1.1. Wiring Methods

Install wiring in accordance with NFPA 70.

3.1.2. Electrical Connections

a. Use twist on wire connectors listed for the environment (i.e., wet, damp, direct burial) and installed per manufacturer's instructions.

b. Use listed power distribution blocks.

3.1.3. Disconnects

a. Install disconnects for all current carrying conductors of the PV source.

b. Install disconnects for the PV equipment. For inverters and other equipment that are energized from more than one source, group and identify the disconnecting means.

c. Install disconnects and overcurrent protection for all ungrounded conductors.

3.2. PV System Grounding

a. Provide grounding systems with a resistance to solid earth ground not exceeding 25 ohms. Ground according to racking manufacturer's recommendations.

b. Install grounding lugs in locations on the solar PV module as designated by the module manufacturer, using stainless steel machine screws of the thread size provided in the pre-tapped holes, along with a stainless-steel star washer placed between the grounding lug and the solar module frame.

3.3. Roof Mounted Structures

a. The solar photovoltaic system details must be accepted by warranty roofing system manufacturer prior to installation. Upon completion of a rooftop system installation, obtain written certification that the rooftop warranty is still valid.

b. Flash and counter-flash all roof penetration in accordance with ICC IBC.

c. Provide a minimum 4.5 inches air gap between the solar PV module frame and the roof surface.

d. Comply with the requirement in NRCA 3767 for working with different roof types.

3.4. Warning Sign Mounting

a. Display calculated maximum and minimum voltages and their respective amperages on engraved warning labels.

b. Provide the number of signs required to be readable from each accessible side. Space the signs in accordance with NFPA 70E.

3.5. Site Restoration

The contractor will repair any disturbances to pre-project conditions of better. This includes any disturbances created when connecting the panel array to the Project Office.

3.6. Closeout Activities

Upon completion of the work and at a time approved by the Contracting Officer, provide instructions by a qualified instructor to the Government personnel in the proper adjustment, system operation, and maintenance of the specified systems and equipment, including pertinent safety requirements as required.

SECTION 00 72 00 - GENERAL CONDITIONS

The following have been modified:

52.211-10 COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK (APR 1984)

The Contractor shall be required to (a) commence work under this contract within 10 calendar days after the date the Contractor receives the notice to proceed, (b) prosecute the work diligently, and (c) complete the entire work ready for use not later than 30 June 2023 The time stated for completion shall include final cleanup of the premises.

*The Contracting Officer shall specify either a number of days after the date the contractor receives the notice to proceed, or a calendar date.

(End of clause)

(End of Summary of Changes)

1.7 Warranty

2.1.2. Performance Requirements