Amendment W912WJ25QA052-0002.pdf

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

Offers 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 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or electronic communication 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 letter or electronic communication, provided each letter or electronic communication 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 NUMBER AS DESCRIBED IN ITEM 14.

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

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, 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.)

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

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

16C. DATE SIGNED

Previous edition unusable STANDARD FORM 30 (REV. 11/2016) Prescribed by GSA FAR (48 CFR) 53.243

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE PAGE OF PAGES

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X) 9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

Section A - Solicitation/Contract Form

The following changes have been made:

Miscellaneous text in this section has been modified to:

REQUEST FOR INFORMATION:

QUESTION 1: Which codes are we required to follow?

RESPONSE 1: Please refer to Part 3.2. of the Statement of Work, "The Contractor shall install the heating systems and components in accordance with the applicable Massachusetts Building Codes and the Manufacturer's Recommendations and NFPA (National Fire Protection Association) 54, the National Fuel Gas Code."

QUESTION 2: Are as-builts available to better understand the location of underground utilities in the dig area?

RESPONSE 2: Original as-builts have been included in the Revised Attachments, but interested vendors should note that the as-builts are not up to date and underground utility locations may differ from the as-builts provided.

QUESTION 3: Have alternative tank placement locations been considered to avoid interfering with existing electrical lines?

RESPONSE 3: An acceptable alternative location for tank placement has been depicted in the Revised Attachments with a blue star.

QUESTION 4: Does it matter where exactly on the slope west of the project office utility room the tank is installed?

RESPONSE 4: An acceptable alternative location for tank placement has been depicted in the Revised Attachments with a blue star.

QUESTION 5: The location of the propane tank seems to be in the retention pond area, is that correct?

Since it is in an area of potential flooding, are there any hold down requirements for the tank?

RESPONSE 5: The area in question is not a retention pond (it has never had water in it, and the soil is very well drained, with a culvert running out of it for drainage). With that said, due to the nature of it being a flood control project, the tank should be anchored under NFPA 58. Please refer to the revised Statement of Work for anchoring requirements.

QUESTION 6: Is cathode protection required for the underground propane tank?

RESPONSE 6: Yes, requirements for cathodic protection for the propane tank in accordance with NFPA 58 have been included in the revised Statement of Work.

W912WJ25QA0520002

Section C - Description/Specifications/Statement of Work

Miscellaneous text in this section has been modified to:

STATEMENT OF WORK :(REVISED)

HEATING SYSTEM REPLACEMENT

U.S. ARMY CORPS OF ENGINEERS

BARRE FALLS DAM PROJECT OFFICE

BARRE, MASSACHUSETTS

STATEMENT OF WORK

I. General

1. Scope of work Furnish all equipment, materials and labor to remove one (1) existing oil-fired boiler and install one (1) high efficiency wall mounted liquid propane fired condensing combination boiler compatible with the existing forced hot water system. The Contractor will supply and install one (1) 1000-gallon underground liquid propane storage tank at the project office. In addition, the Contractor will remove one (1) 119-gallon water heater unit and associated piping and equipment. All work shall be completed in accordance with the following Statement of Work.

2. Location Barre Falls Dam Project Office, located at: 200 Coldbrook Road, Barre, Massachusetts.

3. Technical Point of Contact The Technical Point of Contact for this contract will be Park Ranger Brianna Green. Brianna can be reached at: (978) 758-6291 or by email at brianna.j.green@usace.army.mil.

4. Site Visit An appointment can be made by contacting the Technical Point of Contact, Park Ranger Brianna Green.

Site visits are generally scheduled between 8:00 am and 3:00 pm Monday through Friday.

5. Schedule The period of performance shall be 120 days after contract award. The Preconstruction Conference shall be completed within 14 days of contract award. Work will not be permitted before 7:00 am or after 3:30 pm, or on Saturdays, Sundays or Government holidays unless approved in advance by the Technical Point of Contact.

All preconstruction submittals shall be submitted within 21 days of contract award. The Government reserves up to 21 days for review and acceptance on each submittal/resubmittal from the date of receipt.

If revisions are necessary to the submittals, the Contractor shall make such revisions and shall be resubmitted to the Government in an acceptable form within 14 days of the Government's response, unless additional time is granted by the Government in writing. No field work may proceed prior to the acceptance of preconstruction submittals.

6. Safety

a. General:

All work shall be conducted in accordance with the U.S. Army Corps of Engineers (USACE) Safety and

Occupational Health Requirements (EM 385-1-1, most recent edition), and all applicable Occupational Safety and Health Administration (OSHA), Federal, State, and local safety and health requirements. A copy of EM 385-1-1(2024) can be accessed electronically at the following link:

https://www.publications.usace.army.mil/Portals/76/EM%20385-1-1%20_EFFECTIVE% 2015March2024.pdf

Project staff reserve the right to cease work at any time should the safety of employees, Contractors, and /or the public become jeopardized.

b. Accident Prevention Plan (APP):

The Contractor shall prepare a site-specific Accident Prevention Plan (APP) specific to the activities being performed. It must be written by a Competent Person (CP) using the mandatory ENG Form 6293.

Special attention shall focus on the EM 385-1-1, Chapter 2. Work shall not proceed until the APP has been reviewed by the TPOC and deemed acceptable for use on the project. The APP shall document the specific work processes, equipment, materials to be used, hazards, and acceptable control measures. The APP must be written by a Competent Person (CP) and document the specific work processes, equipment, materials to be used, hazards and applicable control measures.

The mandatory ENG Form 6293 (Accident Prevention Plan Worksheet) must be submitted and accepted prior to beginning on site work:

https://www.publications.usace.army.mil/Portals/76/Eng_Form_6293_2023Aug31.pdf

A preparatory meeting shall be conducted by the Prime Contractor to discuss the APP contents with all effected onsite employees. The Prime Contractor is responsible for informing the subcontractors of the safety provisions under the terms of the contract, the penalties for noncompliance, and inspecting subcontractor operations to ensure that accident prevention responsibilities are being carried out.

Daily safety meetings shall be held and documented. Records shall be available to the Technical Point of Contact upon request.

c. Activity Hazard Analysis (AHA):

An AHA shall be submitted and accepted for each definable feature of work (DFOW) in accordance with EM 385-1-1, Chapter 2-6. Work shall not proceed until the AHA has been accepted by the technical point of contact (TPOC). A DFOW is defined as any task, which is separate and distinct from other tasks, has separate control requirements, or is identified as different trades or disciplines. The AHA shall be continuously reviewed and revised to address changing site conditions as appropriate.

For a non-mandatory formatted outline of an AHA, see ENG Form 6206 (Activity Hazard Analysis) https://www.publications.usace.army.mil/Portals/76/Eng_Form_6206_2023Aug24.pdf

d. Site Safety and Health Officer (SSHO) Requirements:

The Contractor shall employ a minimum of one person to function as a Level 3, SSHO. A Level 3 SSHO is a designated Qualified Person (QP) or Competent Person (CP) with Safety and Occupational Health (SOH) responsibility that meets the requirements of EM 385-1-1, Chapter 2-3. b and 2-4. b.

Level 3 SSHOs must have training, knowledge, and/or experience identifying hazards and implementing controls for the work being performed.

The SSHO shall be present at the project site and be responsible for overseeing the implementation of the Prime Contractor's SOH program. Contractor shall designate all SSHOs on a mandatory ENG Form 6282 (Site Safety and Health Officer Designation Letter):

https://www.publications.usace.army.mil/Portals/76/Eng_Form_6282_2023Aug28.pdf

e. First-Aid and CPR Personnel Requirements:

For shifts with multiple employees, provide at least two employees that are certified to administer First Aid and CPR. When employees work alone, they must be certified in First Aid and be provided an effective means of communication to call for assistance in the event of an emergency. Minimum First

Aid and CPR qualifications are outlined in EM 385-1-1, Chapter 3-3.

f. Additional Personnel Requirements:

Other Competent Person (CP) or Qualified Persons (QP) may be required per EM 385-1-1 and/or other sections of this Scope of Work, based on the definable features of work for this project.

g. Accident Reporting:

All accidents and near misses shall be investigated by the Contractor and reported to the Technical Point of Contact in accordance with EM 385-1-1, Table 2-1.

The mandatory ENG Form 3394 shall be completed and submitted to the Technical Point of Contact within seven (7) days of an incident: https://www.publications.usace.army.mil/Portals/76/Publications /EngineerForms/Eng_Form_3394_2021Aug.pdf

h. Employee Exposure Data:

The Contractor shall electronically report total employee work hours (including subcontractors) to the Technical Point of Contact by close of business on the 10th calendar day of the following month.

7. Preconstruction Conference Prior to the start of any construction, the Technical Point of Contact will schedule and conduct a Preconstruction Conference. The Contractor's Project Manager and Quality Control Personnel will be physically present to attend this meeting. The Contractor shall directly oversee all construction on the project and the Project Manager and Quality Control Personnel shall have the authority to act on behalf of the Contractor. This conference will be held at the time and location agreeable to the Government and Contractor. No construction shall be performed under this contract prior to this conference. The purpose of the conference is to enable the Technical Point of Contact to outline the procedures that will be followed by the Government in its administration of the contract, and to discuss the performance that will be expected from the Contractor. This conference will allow the Contractor an opportunity to ask questions about the Government's administration and inspection of contract construction or obtain other pertinent information that might be required. At the Preconstruction Conference the Contractor shall provide the name of the Project Manager and Quality Control Personnel with telephone numbers for project coordination.

The following is a general list of items for discussion during this Preconstruction Conference:

a. Authority of the Technical Point of Contact and Quality Assurance Inspectors.

b. Contractor's Safety Program (including sub-contractors).

c. Accident Prevention Plan (Submitted & accepted prior to start of work on site)

d. Activity Hazard Analysis (Submitted & accepted prior to start of work on site)

e. Safety Meetings (Documented on NED Form 251)

f. Accident Reporting (ENG Form 3394)

g. Safety Data Sheet (SDS) requirements

h. Correspondence, Communication and Administrative Procedures.

8. Permits The Contractor shall, without additional expense to the Government, be responsible for obtaining any necessary licenses, permits, and letters of certification. The Contractor shall comply with any applicable Federal, State, County, and Municipal laws, codes, and regulations in connection with the performance of the work specified under this contract.

9. Security The Contractor will comply with all established security policies at Barre Falls Dam. Due to periods of heightened security that may affect the access to the areas covered under this contract, areas may be subject to periodic closures, which in turn may reduce or inhibit the Contractor's ability to access certain areas. During periods of heightened security, the Government reserves the right, at any time, to close any property or portion of property and reschedule and/or cancel any subsequent work in an area. The Contractor shall be given at least 24-hour notice of any such closure.

10. Contractor's Personnel

a. Minimum Personnel Requirements:

The Contractor shall provide an adequate number of fully qualified personnel to perform the specified work properly and efficiently within the time limits specified. The Contractor shall provide a list of the names and contact phone numbers for all employees prior to them working on Government Property.

b. Employee Conduct:

The Contractor shall be responsible for seeing that the firm's employees strictly comply with all CFR 36 Rules and Regulations, Federal, State, and municipal laws. Any personnel activity, which, in the opinion of the Government, is deemed detrimental to the performance of the contract may result in the removal of Contractor employee/employees.

c. Examples of unbecoming actions or conduct include but are not limited to the following:

i. Cursing, harassment, or discrimination of and/or unwarranted physical contact with visitors, USACE personnel, or other contractors

ii. Recurring written and/or verbal complaints from visitors, USACE personnel, or other contractors.

iii. Unsafe operation of vehicles while on USACE property.

d. Removal of Contractor's Employees:

The Technical Point of Contact may require the Contractor to immediately remove from the work site any employee of the Contractor or subcontractor, who, in the opinion of the Technical Point of Contact, is incompetent, who endangers persons or property, or whose physical or mental condition is such that it would impair the employee's ability to satisfactorily perform assigned work. Notification to the Contractor shall be promptly made in writing if time and circumstances permit. Otherwise, notification shall be verbal or by telephone and shall be confirmed in writing as soon as possible. No such removal, however, will reduce the Contractor's obligation to perform all work required under this contract, and immediate replacement will be made as required. This requirement shall not be made the basis of any claim for compensation or damages against the United States or any of its officers or agents.

11. Payment Payment shall be made on a per job basis. After final inspection and acceptance by the Government, the Contractor must submit an invoice to the Technical Point of Contact. The invoice shall include the invoice date, contract number, dates of work, description of work, quantities, process, and total amount due per line item. For jobs greater than 30 days the Contractor may request multiple payments.

All invoices may be mailed to:

U.S. Army Corps of Engineers Barre Falls Dam P.O. Box 519 Hubbardston, MA 01452 or emailed to Brianna Green (brianna.j.green@usace.army.mil)

II. Technical Part 1 General:

1. Existing Conditions Barre Falls Dam Project Office - The Project Office is a single story, approximately 2,080 square foot Federal operations building. The existing oil-fired boiler is located in the furnace room (See Informational Photo No #1). The existing Low Pressure Burnham Hydronics model PV84WT-TCWF oil-fired boiler and a supplemental 119-gallon electric water heater supply the heat and domestic hot water for the Project Office. The existing oil fire boiler system includes the following:

a. 120,000 BTU Boiler

b. Indirect domestic hot water

c. Four zones with four zone valves/pumps on the return.

d. Expansion Tank

e. 119-gallon electric water heater.

2. Submittals

Although the Government reviews submissions required by this statement of work, it is emphasized that the Contractor's work must be completed using proper internal controls and review procedures. The Government reserves up to 21 days for review and acceptance on each submittal/resubmittal from the date of receipt. If revisions are necessary to the submittals, the Contractor shall make such revisions and shall resubmit to the Government in acceptable form within 14 days of the Government's response, unless additional time is granted by the Government in writing.

The documents identified below must be prepared in accordance with the applicable standards, submitted to the Technical Point of Contract for review and accepted by the Government.

a. Preconstruction Submittals: Submitted within 21 days of contract award. Submittals must be accepted before the commencement of any field work.

i. ENG Form 6293 (Accident Prevention Plan Worksheet)

ii. Activity Hazard Analysis

iii. ENG Form 6282 (Site Safety and Health Officer Designation Letter)

iv. Contractor's licenses and qualifications

v. Manufacturer's Product Documentation (installation instructions, warranty, etc.)

3. Clean Up The Contractor shall practice good housekeeping to maintain a safe job site. The Contractor shall keep the work area, including any storage areas, free from the accumulation of waste materials. Upon completing work in an area, the Contractor shall remove any tools, equipment, and materials that are not the property of the Government. Upon completion of work, the Contractor shall clean up the job site to the satisfaction of the Government.

Containers for excess and/ or waste materials, rubbish, etc. shall be provided by the Contractor at the site, and the site will be inspected/ cleaned on a daily basis. Water, air, and land resources shall not be adversely impacted during the course of the work. Contractor will take necessary steps to ensure all Federal, State, and local environmental regulatory requirements are met.

4. Government Resources The Contractor may use the restroom at the Barre Falls Project Office but must proceed directly to and from the restroom. The contractor may utilize electricity from the Project Office to complete the work.

The Contractor is otherwise responsible for providing all materials to complete the project. Unless specified in the contract, the Government will not provide any equipment, telephone services or other resources.

5. Environmental Protection The Contractor shall prevent pollution or damage to the environment resulting from construction during this contract. The Contractor will receive no additional payment for environmental protection work.

Prevention of pollution and environmental damage is a Contractor obligation under current State and Federal laws and regulations. Assurance of compliance with this section by subcontractors shall be the responsibility of the Contractor.

6. Environmentally Preferred Products Under the Comprehensive Procurement Guidelines (CPG) program, the Environmental Protection Agency (EPA) designates products that are or can be made with recovered materials and recommends practices for buying these products. Any designated product that is being offered or supplied under this contract shall meet the minimum recommended content levels as identified under the CPG program. Visit https://www.epa.gov/smm/comprehensive-procurement-guideline-cpg-program for a complete list of designated products and the associated recommended contents levels. Offerors must be able to demonstrate that each offered products meets minimum content levels upon request. Products that fall under these requirements are things such as cement, concrete, non-pressure pipes, etc.

Furthermore, the Contractor should also meet the BioPreferred Program requirements set in place by the United States Department of Agriculture (USDA). The USDA designates certain bio-based products for Federal procurement and specifies minimum bio-based content levels for those products. Any designated product that is being offered or supplied under this contract shall meet USDA BioPreferred's minimum bio-based content level. Visit the BioPreferred web site https://www.biopreferred.gov/BioPreferred/faces /pages/ProductCategories.xhtml for the complete list of designated products and the associated minimum bio-based content level requirements. These will include products such as wood and concrete sealers, erosion-controlled materials, sorbents, etc.

Energy Star -As required in clause 52.223-23 Sustainable Products and Services, https://www.acquisition.

gov/far/52.223-23 the Contractor shall only provide products that earn the ENERGY STAR label and meet ENERGY STAR specifications for energy efficiency. The Contractor is encouraged to visit http://www.energystar.gov for complete product specifications and updated lists of qualifying products.

7. Omissions:

This contract may not cover all specified activities, steps, and procedures required to supply the contract product. In case of omission, the normal industry, State, or Federal standards, practices, specifications, and/or guides shall prevail. In no instance shall an omission be reason to produce less than an acceptable product.

8. Quality Assurance:

The Contractor is responsible for the quality control of the contract work. The Government has the right to inspect and test all items called for by the contract, to the extent practicable at all times and at all places during the term of the contract.

9. Other Contracts:

The Government may undertake or award other contracts for additional work not related to this contract, and the Contractor shall fully cooperate with other Contractors and Government employees. The Contractor shall not commit or permit any act, which will interfere with the performance of work by another Contractor, or by Government employees.

10. Receiving and Storing Materials:

The Contractor is responsible for protecting any stored material until it is placed in service. The Contractor is responsible for receiving and unloading of delivered goods. Government employees will not receive material or supplies for the Contractor and will not be responsible for damage to Contractor equipment or material.

Part 2 Products:

1. Liquid propane high efficiency condensing combination boiler system Shall meet the following minimum requirements:

a. Liquid Propane Fired Boiler

i. High efficiency liquid propane fired condensing boiler.

ii. Must be wall mounted.

iii. 95% Annual fuel utilization efficiency (AFUE).

iv. One hundred and twenty thousand (120,000) British Thermal Units (BTUs) per hour.

v. Must be vented out through the existing chimney.

vi. Modulating mixing valve, allowing simultaneous production of heat and hot water.

vii. Energy Star Rated.

viii. Must meet ANSI (American National Standards Institute) Z21.47/CSA2.3 for gas-fired furnaces and ANSI Z21.86 standards for vented gas-fired space heating appliances.

ix. Must meet ASME (American Society of Mechanical Engineers) Boiler and Pressure Vessel Code (BPVC), Section IV Rules for Construction of Heating Boilers.

x. Must be AHRI (Air-conditioning, Heating and Refrigeration Institute) certified.

xi. Boiler must fit wall space available, see Informational photo #2.

b. Expansion Tank - Expansion tank shall be sized to match liquid propane fired boiler requirements.

c. Circulator Pumps - Pumps shall match the liquid propane fired boiler manufacturer's recommendation and work with the existing heat zone piping.

d. Control Relays - Relays shall match the liquid propane fired boiler manufacturer's recommendation for a four (4) zone heating system.

e. Pressure Relief, Feeding and Mixing Valves - shall match the liquid propane fired boiler manufacturer's recommendation.

f. Propane Supply Lines - New propane supply line will be run under ground from the new tank, under the existing walkway and through the building exterior wall in the same location as the existing oil lines as seen in informational photo #5. The existing holes from the removed oil supply lines may be used or new holes may be drilled and the existing holes sealed with caulk.

2. Underground Liquid Propane Storage Tank Shall meet the following minimum requirements:

a. 1000-gallon storage capacity:

i. Fill Valve

ii. Safety Relief Valve

iii. Service Valve

iv. Bleeder Valve

v. Underground Storage Tank Regulator

vi. Float Gauge

vii. Manufacturer's Nameplate

viii. Vapor Return Valve

ix. Liquid Withdrawal Valve

x. Lockable cover access port

b. Cathode Protection per manufacturer's recommendations.

c. Appropriate Exterior Coating for Underground

d. Underground tank will be anchored against floatation if the area is flooded.

i. Tank may be anchored with a method of straps and helical anchors or J-bolts and poured or precast concrete.

ii. Straps will be 1 1/4 inches x 0.035 Galvanized Steel Strap Zinc Coating meets ASTM D93953 G-115.

1) General purpose reinforced PVC lay flat water discharge hose or equivalent must be used to cover galvanized strap wherever it may potentially come in contact with the fuel tank.

iii. Helix anchors will be 60" in length with a 6" disk.

iv. Concrete will be enough to counteract the buoyancy of an empty 1000 Gallon tank submerged in water. Approximately 9,000 lbs. of concrete will be required to adequately anchor the tank.

Part 3 Execution:

1. Removal

a. The Contractor shall disconnect the fuel line from the existing boiler. The fuel line shall be purged, cleaned, and cut/capped at the oil tank located in the fuel storage building or where it tees off to feed the Emergency Backup Generator. All fuel and purged material shall be disposed of off-site in accordance with all applicable laws and regulations.

b. Remove the existing circulator pumps and control relay.

c. Remove the existing expansion tank.

d. Remove the existing boiler.

e. Remove exhaust pipe venting into chimney.

f. Patch/fill and insulate the external penetration from the vent and fill lines.

g. Remove 119-gallon Jetglas electric water heater and accompanying plumbing and wiring back to their sources.

NOTE: The existing heat zone piping is to be re-used as part of the new liquid propane fired boiler installation.

2. Installation:

The Contractor shall install the heating systems and components in accordance with the applicable Massachusetts Building Codes and the manufacturer's recommendations and NFPA (National Fire Protection Association) 54, the National Fuel Gas Code.

a. Install new liquid propane high efficiency condensing combination boiler on the wall where the existing boiler was located on the brick wall adjacent to the chimney flue. (See informational photo number 2).

b. Install new circulator pumps, control relay for the four (4) zones, pressure/feed/mixing valves, expansion tank, exhaust vent, and replace boiler piping in accordance with the manufacturer's recommendations.

c. Connect new boiler and piping to existing heat zone and domestic hot water plumbing in a neat and orderly fashion.

d. Install the new underground liquid propane tank in an existing excavated area west of the Project Office utility room (see photos 8 and 9 for approximate location). Tank shall be anchored in accordance with NFPA 58 due to location in a flood control facility. A minimum of 2 anchoring straps will be used with either 4 helix anchors or 4 J-bolts installed in poured concrete / 4 anchor points in cast concrete, Additional excavation may be needed to following manufacturer specifications on anchoring the tank.

accommodate base material, install lines, vents, and connection to the new boiler. The new lines shall be buried and include metal marking tape.

e. Install the cover, , backfill cathodic protection in accordance with the manufacturer's recommendations over the tank with materials recommended by the manufacturer for contact with the tank, followed by a top cover of loam and grade the area to make the top level with the existing grade around the project office and sloped edges tapered to less than 15 degrees. Backfilled soil must be compacted to tank install specifications to prevent settling and movement of tank and slopes. The Contractor shall loam to a depth of 4-6 inches, seed, and mulch all disturbed areas, erosion control methods may need to be employed to prevent new seed from washing down the slope. Loam shall be screened and from a local source that is clean, and free of weeds, litter, and brush with appropriate organic matter suited for growing grass. Seed shall be an appropriate blend of perennial ryegrass and Kentucky bluegrass suitable for the climate of Massachusetts and high levels of traffic and wear.

f. At the completion of the installation the Contractor will conduct a performance test for a minimum of sixty minutes. The Technical Point of Contact will confirm that each element of the system is working properly.

KO CONTRACTING DIVISION, 696 VIRGINIA ROAD

CONCORD, MA 01742-2751

UNITED STATES

ALICIA LACROSSE, EMAIL: ALICIA.N.LACROSSE@USACE.ARMY.MIL TELEPHONE: 978-318-8902

AdminBy:

SCD: PAS:

SOLICITATION CLOSING REMAINS JULY 24, 2025 AT 5:00 PM EASTERN.

ALL OTHER TERMS AND CONDITIONS REMAIN UNCHANGED.