Attachment 1 - SOW Bldgs 010AB RO System Replacements 01AUG2023.pdf

UNITED STATES DEPARTMENT OF AGRICULTURE

BELTSVILLE AGRICULTURAL RESEARCH CENTER

FACILITIES SERVICE

ENGINEERING AND CONSTRUCTION BRANCH

BUILDING 426A, BARC-EAST

10300 BALTIMORE AVENUE

BELTSVILLE, MARYLAND 20705-2350

STATEMENT OF WORK AND SPECIFICATION

TO

REPLACE THE RO SYSTEMS IN BUILDINGS 010A & B ALONG WITH

MISCELLANEOUS WORK INSIDE EACH BUILDING

BELTSVILLE AGRICULTURAL RESEARCH CENTER

BELTSVILLE, MARYLAND

August 1, 2023

GENERAL REQUIREMENTS

1.1 GENERAL INTENTION

A. Contractor shall completely prepare the site for Reverse Osmosis (RO) services, including demolition and removal of existing RO systems, piping, & faucets, and furnish labor and materials to perform work as required by the contract documents.

B. All employees of general contractor and subcontractors shall comply with ARS security management program, obtain permission of the ARS Location Manager, be identified by project and employer by wearing government issued identification badges at all times on ARS property, and restricted from unauthorized access.

C. Prior to commencing work, the general contractor shall provide proof that an OSHA certified “competent person” (CP) (29 CFR 1926.20(b)(2) will maintain a presence at the work site whenever the general or subcontractors are present.

D. Training:

1. All employees of the general contractor or subcontractors shall have the 10-hour OSHA certified Construction Safety course and /or other relevant competency training. Supervisors shall have completed the 30-hour OSHA training.

2. Site supervisor shall have proper certifications to install RO water systems.

3. Submit training records of all such employees to the Contracting Officer for approval before the start of work.

1.2 STATEMENT OF BID ITEM(S)

A. ITEM I, GENERAL CONSTRUCTION: Work includes general construction, alterations, and removal of existing RO water systems and certain other items.

STATEMENT OF WORK

PROJECT LOCATION: Beltsville Agricultural Research Center (BARC), Buildings 010A & B Beltsville, Maryland

DESCRIPTION OF WORK: To replace the existing nonfunctional RO systems located in buildings 010A & B. To replace the flexible supply RO water tubing and fittings in each lab. Refer to the drawings below for building 010A. To replace an RO water faucet in building 010A room 116. To repair a leaking RO water main line located in building 010A rooms 003. To repair the broken RO water supply pipe in building 010B growth chamber room.

Drawings of Buildings 010A & 010B

Building 010A o Building 010A P105 Riser Diagrams 15OCT1992 o Building 010A P201 Basement Floor Plan 15OCT1992 o Building 010A P202 1st Floor Plan 15OCT1992 o Building 010A P203 2nd Floor Plan 15OCT1992 o Building 010A P204 3rd Floor Plan 15OCT1992

Building 010B o Building 010B Electrical Plans 28JUNE1996 o Building 010B Mechanical Plans 28JUNE1996 o Building 010B One Line Riser 28JUNE1996 o Building 010B Plumbing Plans 28JUNE1996

BUILDING 010A

The contractor shall shut down the existing non-functional RO system, distribution pumps & controls.

The contractor shall demo the existing non-functional RO system distribution pumps & controls. The contractor shall prepare the site for a new RO water system, distribution pumps & controls. The existing footprint for the RO system is 3’x5’ and for the distribution pumps is 3’x2’. The contractor shall install a new functional RO water system, distribution pumps & controls that are comparable to the existing unit & pumps or better per the manufacturer’s recommendations. The contractor shall place the new RO water system, distribution pumps & controls into service and test for functionality. The contractor shall take water tests at random locations throughout the building. The contractor shall provide a report of the functionality of the new system and the results of the random locations water tests.

The contractor shall valve off each wing (north & south) and remove all 3/8” OD RO water flex supply tubing and connections in each lab of building 010A. The contractor shall only valve off one floor at a time to reduce down time in the entire building. The contractor shall install new Linear Low-Density Polyethylene (LLDPE) flex tubing and connections in each lab per the manufacturer’s recommendations.

The contractor shall install shut off valves for each initial supply line before they branch off to the RO water faucets and other equipment. The contractor shall leak test all new connections and place the RO water supply to all wings of the building back in service.

The contractor shall repair a leaking one & a half inch (1-1/2”) pipe section in room 003. The contractor shall inspect all work for leaks and functionality per this SOW. The contractor shall place the RO system back in service once all repairs are made.

Building 010A There is a nonfunctional RO system located in building 010A. The system consists of the following:

Two (2) 10-inch 5-micron prefilters water softener 12-inch x 36-inch activated carbon filter 10 Mixed Bed DI. Size of mixed bed DI is 14 inches x 47 inches 5 Carbon beds. Size of Carbon Beds is 14 inches x 47 inches Environmental Product Model 1500 Reverse Osmosis System Storage Tank Filter One (1) 20-inch Osmonic .2-micron final filters Two (2) Webtrol H60B3S Circulating

Pumps Glasco Model G-70 UV Salt tank

Building 010A RO system replacement: The contractor shall provide all labor and material to

Demo the existing non-functional RO system, distribution pumps & controls Install a new RO system, distribution pumps & controls that consist of the following specs o 3,600 gpd nominal product output from the RO machine (2.5 gpm @ 50° F) o Epoxy painted, structural carbon steel skid and frame for the RO machine o Two (2) 304SS Vertical multi-stage centrifugal distribution pumps, 3 HP, 230/ 460 VAC, 3- Ph, 60 Hz, TEFC motor o Polypropylene cartridge type sediment prefilter housing (5-micron) o Two (2) FRP membrane housings o Two (2) Thin-film composite high rejection membrane elements (4" x 40") o Schedule 80 PVC low pressure piping o 304 stainless-steel high-pressure piping o NEMA-4 microprocessor control package, prewired motor starter w/fused disconnect switch o Digital product conductivity monitor o Product, concentrate & recycle flow meters o 316 stainless steel pressure gauges o Concentrate and recycle flow control valves o Automatic inlet feed valve o Low inlet pressure switch with shutdown o Membrane auto-flush system on shutdown

Picture 1 Building 010A RO System to be replaced

Picture 2 Building 010A RO water pump to be replaced

Picture 3 RO System Water Pump Label

Picture 4 Building 010A RO System Distribution Pumps to be replaced

Picture 5 Building 010A RO System Distribution Pumps Label

Picture 6 Building 010A RO System Distribution

Pumps Controls to be replaced

Building 010A RO flex tubing, RO faucet replacement &main pipeline repair: The contractor shall provide all labor and material to

Remove all LLDPE piping and connections in each lab.

Install new RO water flexible supply tubing, valves, and connections inside each lab with the following minimum specs.

o 3/8” OD x 0.062” wall thickness LLDPE tubing o FDA compliant/ NSF International Standard 51 & 61 certified.

o Resistant to environmental stress cracking as measured by ASTM D-1693 o Max pressure of 230psi o Max temp of 200°F

Remove a non-functional RO water faucet in room 116.

Install a new functional RO water faucet in room 116.

Repair a leaking section of one & a half inch (1-1/2”) RO water main pipe located in room 003.

Leak test all repairs.

Place the RO system back into fully functional service.

Picture 7 RO Flex Tubing to be replace Picture 8 RO Flex Tubing to be replace

Picture 9 RO Flex Tubing to be replace

Picture 10 RO Faucet to be replace Picture 11 RO Faucet to be replace

Picture 12 RO Pipe Section to be repaired highlighted Picture 13 RO Water pipe label

BUILDING 010B

The contractor shall shut down the RO system and replace the existing non-functional RO system & circulating pumps. The RO system and pumps shall be replaced with a new functional unit & pumps that are comparable to the existing unit & pumps or better. The contractor shall repair a section of RO water piping (approximately 4’) inside the growth chamber room. The contractor shall remove the old non-functioning RO system & any other materials not used to complete the project in this SOW. The contractor shall place the new system into service and test for functionality. The contractor shall take water test at random locations and provide a report for the functionality of the new system. The contractor shall provide a report of the new system and the water test.

The contractor shall repair a section of 1-1/2” RO water supply pipe located in the growth chamber room.

Building 010B There is a nonfunctional RO system located in building 010B. The system consists of the following:

Water Softener Ecodyne Reverse Osmosis System Two Webtrol Circulating Pump Model# H35B9S16 Storage Tank Filter

Ultradynamics Model #1500 UV 3 Carbon Tanks Six (6) Mixed Bed DI

Building 010B RO system replacement: The contractor shall provide all labor and material to

Install a new RO system that consist of the following specs o 5,400 gpd nominal product output from the RO machine (3.8 gpm @ 50° F) o Epoxy painted, structural carbon steel skid and frame for the RO machine o Two (2) 304SS Vertical multi-stage centrifugal feed pump, 3 HP, 460 VAC, 3-Ph, 60 Hz, TEFC motor o Polypropylene cartridge type sediment prefilter housing (5-micron) o Three (3) FRP membrane housings o Three (3) Thin-film composite high rejection membrane elements (4" x 40") o Schedule 80 PVC low pressure piping o 304 stainless-steel high-pressure piping o NEMA-4 microprocessor control package, prewired motor starter w/fused disconnect switch o Digital product conductivity monitor o Product, concentrate & recycle flow meters o 316 Stainless Steel pressure gauges o Concentrate and recycle flow control valves o Automatic inlet feed valve o Low inlet pressure switch with shutdown o Membrane auto-flush system on shutdown

Picture 12 RO Water System to be replaced

Picture 13 RO Water System pump label

Picture 14 RO Water Distribution Pumps to be replaced

Picture 15 RO Water Distribution Pumps label

Picture 16 RO Water Distribution Pumps Controls to be replaced

Picture 17 RO Water Distribution Pumps Controls Picture 18 RO Water Distribution Pumps Controls

Picture 19 Broken 1-1/2" RO Water Supply to be repaired Picture 20 1-1/2" RO Water Supply pipe label

The contractor shall furnish the submittals and Mechanical Room Floor Plans with the following conditions:

A. The government shall provide the contractor with the appropriate CAD/ PDF files.

B. The contractor shall furnish floor plans that reflect the engineer's original design.

Assumptions for the contractor:

The contractor shall perform all work, including testing, to be performed Monday through Friday from 7:00 AM - 3:30 PM unless otherwise indicated. This may include noisemaking activities, such as hammer drilling, sounding of audible devices, etc.

1.3 PROJECT COORDINATION:

A. Construction Project Schedule:

1. The Contractor shall submit a construction project schedule to the Contracting Officer for approval within 5 days after receiving the Notice to Proceed. The Contractor will not begin actual work until the construction project schedule has been approved by the Contracting Officer.

2. The construction project schedule shall clearly show estimated construction time as well as actual construction time as the work progresses. A Gantt-type chart software shall be used.

3. The Contractor shall submit one electronic copy and one paper copy of the updated construction project schedule with each progress payment request.

B. Contract Inspector’s Daily Report:

Contractor shall submit to the Contracting Officer a daily report listing the names of all those present on the job site each day, along with their Job Classification, hours of work and a brief description of the work performed by each on that day. The Contract Inspector’s Daily Report is to be submitted at the beginning of work each day for the previous day’s work and shall be maintained throughout the term of the contract.

C. Contractor’s Contact Log (Form SF-1413):

The contractor shall provide the Contracting Officer a list of all sub-contractors in a table format listing at least the following (which apply): Company Name, Company Address, Name of Contact person(s), Telephone Numbers, Fax Numbers, and E-mail address. The Contractor shall update the list immediately when subcontractors change or are added.

D. Formal Meetings:

Any meeting (deemed formal by the contractor, the COR, or the Contracting Officer) will have the minutes of said meeting prepared by the contractor (and a copy provided to the Contracting Officer). The minutes shall include: Date, Name of Attendees (with contact info), Old Business, and New Business subjects (or narratives). Regardless of who requests a meeting (the COR or the Contractor or the Contracting Officer) the contractor may be required to provided hard copy pictures of the issues to be discussed. Each issue will be linked to a contract specification section number and/or subject area by page number. Issues discussed will also include an action/completion date.

1.4 SAFETY SUBMITTALS

A. Contractor shall submit a "site specific" Safety Plan to the Contracting Officer that describes how the contractor is to comply with all applicable OSHA standards and NFPA codes pertaining to construction work to include, but not limited to: General Safety and Health Provisions, Occupational Health and Environmental Controls, Personal Protective and Life Saving Equipment, Hand and Power Tools, Welding and Cutting, Electrical, Scaffolds, Fall Protection, Excavations, Demolition, Stairways and Ladders, Toxic and Hazardous Substances, Confined Space Entry, Lockout/Tagout, Respiratory Protection, Hearing Protection. Safety Plan shall identify Contractor and sub-contractor employees who are authorized/qualified to perform electrical work. No work shall proceed until written approval of the Safety Plan by the Contracting Officer. Safety Plan shall describe how the Contractor and/or sub-contractors are to secure equipment, supplies, tools, and chemical products. Contractor and/or sub-contractor equipment, supplies, tools, and chemical products are to be under the control of the Contractor at all times, equipment, supplies tools, and chemical products found not to be under the control of the Contractor or sub-contractor may be confiscated and delivered to the Contracting Officer.

B. The Contractor shall inspect the entire site daily, including days without work if there are NFPA 101 Life Safety Code deficiencies existing while construction work is shut down, the results of that inspection shall be documented on the below (pg 22) “DAILY INSPECTION FORM”, and the form is to be signed and submitted to the Contracting Officer.

C. Contractor shall provide continuous monitoring for noise, dust, chemical vapor generation, volatile organic compounds, and vibration. At no time shall noise exposure to any ARS staff exceed 75 dB.

Contractor shall provide to the Contracting Officer a written weekly update of all test results and also for proposed work for the subsequent two weeks (a two week “look-ahead”) involving any activity that will produce loud noises, heavy vibrations, strong smells, or significant dust inside ARS staff occupied space.

D. Contractor and sub-contractors shall notify in writing the Contracting Officer at least one week prior to executing high risk work (this may be included in the two week “look-ahead” update).

High risk work includes, but is not limited to, tasks requiring Lockout/Tag Out, live electrical work, hot work, work at heights, trenching/ shoring, crane operations, and confined space entry.

Contractor’s Competent Person shall provide the Contracting Officer written weekly documented safety inspection results.

E. Contractor shall provide to the Contracting Officer for approval, copies of Material Safety Data Sheets (MSDS) for EVERY CHEMICAL WITHOUT EXCEPTION prior to bringing such chemical on the work site.

1.5 CONSTRUCTION SECURITY REQUIREMENETS

A. Security Plan:

1. The security plan defines both physical and administrative security procedures that will remain effective for the entire duration of the project.

2. The General Contractor is responsible for assuring that all sub-contractors working on the project and their employees also comply with these regulations.

B. Contractor Personnel

1. Upon receipt of the Notice to Proceed, the Contractor shall provide information about every employee including that of all sub-contractors who will need access to construction site.

3. Each employee shall be furnished with a badge by the Government for access to construction site.

This badge must be worn so as to be clearly visible at all times while on the work site.

C. Security Procedures:

1. Contractor’s employees shall not enter the project site without appropriate badges. The badges shall be obtained from building 426A prior to reporting to the job site. Each vehicle onsite shall have a vehicle tag for the rear-view mirror during construction.

2. For working outside the “regular hours” as defined in the contract, The Contractor shall give a ten

(10) day notice to the Contracting Officer so that security arrangements can be provided for the employees. This notice is separate from any notices required for utility shutdown described later in this section.

3. No photography of ARS premises is allowed without written permission of the Contracting Officer.

4. ARS reserves the right to close down or shut down the project site and order the Contractor’s employees off the premises in the event of a national emergency or Government shutdown. The Contractor may return to the site only with the written approval of the Contracting Officer.

D. Document Control:

1. The Contractor is responsible for safekeeping of all drawings, project manuals and other project information. This information shall be shared only with those with a specific need to accomplish the project.

2. These documents shall not be removed or transmitted from the project site without the written approval of Contracting Officer.

3. All paper waste or electronic media such as CD’s and diskettes shall be shredded and destroyed in a manner acceptable to ARS.

E. Motor Vehicle Restrictions

1. Vehicle authorization request shall be required for any vehicle entering the site and such request shall be submitted 24 hours before the date and time of access. Access shall be restricted to picking up and dropping off materials and supplies and Contractor must be on site to receive all deliveries.

2. Separate permits shall be issued for Contractor and its employees for parking in designated areas only. The badging shall be obtained at building 426A.

1.6 FIRE SAFETY

A. Applicable Publications: Publications listed below form part of this Article to extent referenced.

Publications are referenced in text by basic designations only.

1. American Society for Testing and Materials (ASTM):

E84-2007 ......................... Surface Burning Characteristics of Building Materials

2. National Fire Protection Association (NFPA):

10-2006 ........................... Standard for Portable Fire Extinguishers

30-2003 ........................... Flammable and Combustible Liquids Code

51B-2003 ......................... Standard for Fire Prevention During Welding, Cutting and Other Hot Work

70-2005 ........................... National Electrical Code

241-2004 ......................... Standard for Safeguarding Construction, Alteration, and Demolition Operations

3. Occupational Safety and Health Administration (OSHA):

29 CFR 1926 ................... Safety and Health Regulations for Construction

B. Fire Safety Plan: Establish and maintain a fire protection program in accordance with 29 CFR 1926.

Prior to start of work, prepare a plan detailing project-specific fire safety measures, including periodic status reports, and submit to the Contracting Officer for review for compliance with contract requirements. Prior to any worker for the contractor or subcontractors beginning work, they shall undergo a safety briefing provided by the contractor’s competent person per OSHA requirements.

This briefing shall include information on the construction limits, ARS safety guidelines, means of egress, break areas, work hours, locations of restrooms, use of ARS equipment, etc. Documentation shall be provided to the Contracting Officer that individuals have undergone contractor’s safety briefing.

C. Site and Building Access: Maintain free and unobstructed access to facility emergency services and for fire, police and other emergency response forces in accordance with NFPA 241.

D. Separate temporary facilities, such as trailers, storage sheds, and dumpsters, from existing buildings and new construction by distances in accordance with NFPA 241. For small facilities with less than 20 feet exposing overall length, separate by 10 feet.

E. Temporary Heating and Electrical: Install, use and maintain installations in accordance with 29 CFR 1926, NFPA 241 and NFPA 70.

F. Means of Egress: Do not block exiting for occupied buildings, including paths from exits to roads.

Minimize disruptions and coordinate with Contracting Officer.

G. Egress Routes for Construction Workers: Maintain free and unobstructed egress. Inspect daily. Report findings and corrective actions weekly to the Contracting Officer.

H. Fire Extinguishers: Provide and maintain extinguishers in construction areas and temporary storage areas in accordance with 29 CFR 1926, NFPA 241 and NFPA 10.

I. Flammable and Combustible Liquids: Store, dispense and use liquids in accordance with 29 CFR 1926, NFPA 241 and NFPA 30.

J. Existing Fire Protection: Do not impair automatic sprinklers, smoke and heat detection, and fire alarm systems, except for portions immediately under construction, and temporarily for connections. Provide fire watch for impairments more than 4 hours in a 24-hour period. Request interruptions in accordance with Article, OPERATIONS AND STORAGE AREAS, and coordinate with the Contracting Officer. All existing or temporary fire protection systems (fire alarms, sprinklers) located in construction areas shall be tested as coordinated with the Contracting Officer. Parameters for the testing and results of any tests performed shall be recorded by the General Contractor and copies provided to the Contracting Officer.

K. Hot Work: Perform and safeguard hot work operations in accordance with NFPA 241 and NFPA 51B. Coordinate with the Contracting Officer. Designate contractor's responsible project-site fire prevention program manager to coordinate permit hot work.

L. Fire Hazard Prevention and Safety Inspections: Inspect entire construction area weekly. Coordinate with, and report findings and corrective actions weekly to the Contracting Officer.

M. Smoking: Smoking is prohibited in and adjacent to construction areas inside existing buildings and additions under construction. In separate and detached buildings under construction, smoking is prohibited except in designated smoking rest areas.

N. Dispose of waste and debris in accordance with NFPA 241. Remove from site daily.

O. Perform other construction, alteration and demolition operations in accordance with 29 CFR 1926.

1.7 OPERATIONS AND STORAGE AREAS

A. The Contractor shall confine all operations (including storage of materials) on Government premises to areas authorized or approved by the Contracting Officer. The Contractor shall hold and save the Government, its officers and agents, free and harmless from liability of any nature occasioned by the Contractor's performance.

B. Temporary buildings (e.g., storage sheds, shops, offices) and utilities may be erected by the Contractor only with the approval of the Contracting Officer and shall be built with labor and materials furnished by the Contractor without expense to the Government. The temporary buildings and utilities shall remain the property of the Contractor and shall be removed by the Contractor at its expense upon completion of the work. With the written consent of the Contracting Officer, the buildings and utilities may be abandoned and need not be removed.

C. The Contractor shall, under regulations prescribed by the Contracting Officer, use only established roadways, or use temporary roadways constructed by the Contractor when and as authorized by the Contracting Officer. When materials are transported in prosecuting the work, vehicles shall not be loaded beyond the loading capacity recommended by the manufacturer of the vehicle or prescribed by any Federal, State, or local law or regulation. When it is necessary to cross curbs or sidewalks, the Contractor shall protect them from damage. The Contractor shall repair or pay for the repair of any damaged curbs, sidewalks, or roads.

D. Working space and space available for storing materials shall be as determined by the Contracting Officer.

E. Workers are subject to rules of the Location applicable to their conduct which shall be provided by the Contracting Officer.

F. Execute work so as to interfere as little as possible with normal functioning of Location as a whole, including operations of utility services, fire protection systems and any existing equipment, and with work being done by others. Use of equipment and tools that transmit vibrations and noises through the building structure, are not permitted in buildings that are occupied during construction except as permitted by the Contracting Officer where required by limited working space.

1. Do not store materials and equipment in other than assigned areas.

2. Schedule delivery of materials and equipment to immediate construction working areas within buildings in use by the ARS in quantities sufficient for not more than two work days.

3. Where access by ARS personnel to vacated portions of buildings is not required, storage of Contractor's materials and equipment may be permitted subject to fire and safety requirements.

G. Contractor shall take all measures and provide all material necessary for protecting existing equipment and property in affected areas of construction against dust and debris, so that equipment and affected areas to be used in the ARS operations will not be hindered. Contractor shall permit access to ARS personnel through construction areas which serve as routes of access to such affected areas and equipment.

Coordinate alteration work in areas occupied by ARS so that operations will continue during the construction period.

H. Utilities Services: Maintain existing utility services for ARS at all times. Provide temporary facilities, labor, materials, equipment, connections, and utilities to assure uninterrupted services. Where necessary to cut existing water, steam, gases, sewer or air pipes, or conduits, wires, cables, etc. of utility services or of fire protection systems and communications systems (including telephone), they shall be cut and capped at suitable places where shown; or, in absence of such indication, where directed by the Contracting Officer.

1. No utility service such as water, gas, steam, sewers or electricity, or fire protection systems and communications systems may be interrupted without prior written approval of the Contracting Officer. Electrical work shall be accomplished with all affected circuits or equipment de-energized. When an electrical outage cannot be accomplished, work on any energized circuits or equipment shall not commence without the Contracting Officer’s prior knowledge and written approval.

2. Contractor shall submit a request to interrupt any such services to the Contracting Officer, in writing, Two weeks advanced notice and again 48 hours in advance of proposed interruption.

Request shall state reason, date, exact time of, and approximate duration of such interruption.

3. Contractor will be advised (in writing) of approval of request, or of which other date and/or time such interruption will cause least inconvenience to operations of ARS. Interruption time approved by ARS may occur at other than Contractor's normal working hours.

4. Major interruptions of any system must be requested, in writing, at least 21 calendar days prior to the desired time and shall be performed as directed by the Contracting Officer. It is the Contractor's responsibility to develop a work plan and schedule detailing, at a minimum, the procedures to be employed, the equipment and materials to be used, the mitigating life safety measures to be used during the work, and a schedule defining the duration of the work with milestone subtasks.

5. In case of a contract construction emergency, service will be interrupted on approval of the Contracting Officer. Such approval will be confirmed in writing as soon as practical.

6. Whenever it is required that a connection fee be paid to a public utility provider for new permanent service to the construction project, for such items as water, sewer, electricity, gas or steam, payment of such fee shall be the responsibility of the Government and not the Contractor.

J. To minimize interference of construction activities with flow of ARS traffic, comply with the following:

1. Keep roads, walks and entrances to grounds, to parking and to occupied areas of buildings clear of construction materials, debris and standing construction equipment and vehicles.

2. Method and scheduling of required cutting, altering and removal of existing roads; walks and entrances must be approved by the Contracting Officer.

K. Coordinate the work for this contract with other construction operations as directed by Contracting Officer. This includes the scheduling of traffic and the use of roadways, as specified in Article, USE OF

ROADWAYS.

1.8 ALTERATIONS

A. Survey: Before any work is started, the Contractor shall make a thorough survey with the Contracting Officer, of areas of the building in which alterations occur and areas which are anticipated routes of access, and furnish a report, signed, to the Contracting Officer.

1. Shall note any discrepancies between drawings and existing conditions at site.

2. Shall designate areas for working space, materials storage and routes of access to areas within buildings where alterations occur, and which have been agreed upon by Contractor and Contracting Officer.

B. Any items required by drawings to be either reused or relocated or both, found during this survey to be nonexistent, or in opinion of Contracting Officer, to be in such condition that their use is impossible or impractical, shall be furnished and/or replaced by Contractor with new items in accordance with specifications which will be furnished by Government. Provided the contract work is changed by reason of this subparagraph B, the contract will be modified accordingly, under provisions of clause entitled

"DIFFERING SITE CONDITIONS" (FAR 52.236-2).

C. Re-Survey: Thirty days before expected partial or final inspection date, the Contractor and Contracting Officer together shall make a thorough re-survey of the areas of building.

1. Re-survey report shall list any damage caused by Contractor and will form basis for determining extent of repair work required of Contractor to restore damage caused by Contractor's workers in executing work of this contract.

D. Protection: Provide the following protective measures:

1. Temporary protection against damage for portions of existing structures and grounds where work is to be done, materials handled, and equipment moved and/or relocated.

E. Final Cleanup:

1. Upon completion of project, or as work progresses, remove all construction debris from the site.

1.9 DISPOSAL AND RETENTION

A. Materials and equipment accruing from work removed and from demolition of roadway, or parts thereof, shall be disposed of as follows:

1. Items that remain property of the Government shall be removed or dislodged from present locations in such a manner as to prevent damage which would be detrimental to re-installation and reuse. Store such items where directed by Contracting Officer.

2. Items not reserved shall become property of the Contractor and be removed by Contractor from ARS property.

3. Items of portable equipment and furnishings located in rooms and spaces in which work is to be done under this contract shall remain the property of the Government. When rooms and spaces are vacated by the ARS during the alteration period, such items which are NOT required by drawings and specifications to be either relocated or reused will be removed by the Government in advance of work to avoid interfering with Contractor's operation.

1.10 PROTECTION OF EXISTING VEGETATION, STRUCTURES, EQUIPMENT, UTILITIES,

AND IMPROVEMENTS

A. The Contractor shall preserve and protect all structures, equipment, and vegetation (such as trees, shrubs, and grass) on or adjacent to the work site, which is not to be removed and which does not unreasonably interfere with the work required under this contract. The Contractor shall only remove trees when specifically authorized to do so and shall avoid damaging vegetation that will remain in place. If any limbs or branches of trees are broken during contract performance, or by the careless operation of equipment, or by workers, the Contractor shall trim those limbs or branches with a clean cut and paint the cut with a tree-pruning compound as directed by the Contracting Officer.

B. The Contractor shall protect from damage all existing improvements and utilities at or near the work site and on adjacent property of a third party, the locations of which are made known to or should be known by the Contractor. The Contractor shall repair any damage to those facilities, including those that are the property of a third party, resulting from failure to comply with the requirements of this contract or failure to exercise reasonable care in performing the work. If the Contractor fails or refuses to repair the damage promptly, the Contracting Officer may have the necessary work performed and charge the cost to the Contractor.

(FAR 52.236-9)

1.11 RESTORATION

A. Remove, cut, alter, replace, patch and repair existing work as necessary to install new work. Except as otherwise shown or specified, do not cut, alter or remove any structural work, and do not disturb any ducts, plumbing, steam, gas, or electric work without approval of the Contracting Officer. Existing work to be altered or extended and that is found to be defective in any way, shall be reported to the Contracting Officer before it is disturbed. Materials and workmanship used in restoring work shall conform in type and quality to that of original existing construction, except as otherwise shown or specified.

B. Upon completion of contract, deliver work complete and undamaged. Existing work (mechanical and electrical work, lawns, paving, roads, walks, etc.) disturbed or removed as a result of performing required new work, shall be patched, repaired, reinstalled, or replaced with new work, and refinished and left in as good condition as existed before commencing work.

C. At Contractor's own expense, Contractor shall immediately restore to service and repair any damage caused by Contractor's workers to existing piping and conduits, wires, cables, etc., of utility services or of fire protection systems and communications systems (including telephone) which are indicated on drawings and which are not scheduled for discontinuance or abandonment.

D. Expense of repairs to such utilities and systems not shown on drawings or locations of which are unknown will be covered by adjustment to contract time and price in accordance with clause entitled "CHANGES" (FAR 52.243-4) and "DIFFERING SITE CONDITIONS" (FAR 52.236-2).

1.12 LAYOUT OF WORK

A. The Contractor shall lay out the work from Government established base lines and bench marks, indicated by the contract documents, and shall be responsible for all measurements in connection with the layout. The Contractor shall furnish, at Contractor's own expense, all stakes, templates, platforms, equipment, tools, materials, and labor required to lay out any part of the work. The Contractor shall be responsible for executing the work to the lines and grades that may be established or indicated by the Contracting Officer.

The Contractor shall also be responsible for maintaining and preserving all stakes and other marks established by the Contracting Officer until authorized to remove them. If such marks are destroyed by the Contractor or through Contractor's negligence before their removal is authorized, the Contracting Officer may replace them and deduct the expense of the replacement from any amounts due or to become due to the Contractor.

(FAR 52.236-17)

B. Establish and plainly mark lines and grades that are reasonably necessary to properly assure that location, orientation, and elevations established are in accordance with lines and elevations shown on contract drawings.

1.13 USE OF ROADWAYS

A. For hauling, use only established public roads and roads on ARS property and, when authorized by the Contracting Officer, such temporary roads which are necessary in the performance of contract work.

Temporary roads shall be constructed by the Contractor at Contractor's expense. When necessary to cross curbing, sidewalks, or similar construction, they must be protected by well-constructed bridges.

1.14 TEMPORARY TOILETS

A. Provide for use of all Contractors’ workers ample temporary sanitary toilet accommodations with suitable sewer and water connections; or, when approved by Contracting Officer, provide suitable dry closets where directed. Keep such places serviced regularly, clean and free from flies and all connections and appliances connected therewith are to be removed prior to completion of contract, and premises left perfectly clean.

1.15 AVAILABILITY AND USE OF UTILITY SERVICES

A. The Government shall make all reasonably required amounts of utilities available to the Contractor from existing outlets and supplies, as specified in the contract. Should existing services be inadequate for the Contractor’s purposes without interfering with ARS operations, the Contractor shall provide and pay for their own services. The amount to be paid by the Contractor for chargeable electrical services shall be the prevailing rates charged to the Government. The Contractor shall carefully conserve any utilities furnished without charge.

B. The Contractor, at Contractor's expense and in a workmanlike manner satisfactory to the Contracting Officer, shall install and maintain all necessary temporary connections and distribution lines, and all meters required to measure the amount of electricity used for the purpose of determining charges. Before final acceptance of the work by the Government, the Contractor shall remove all the temporary connections, distribution lines, meters, and associated paraphernalia.

C. Contractor shall install meters at Contractor's expense and furnish the ARS a monthly record of the Contractor's usage of electricity as hereinafter specified.

D. Heat: Furnish temporary heat necessary to prevent injury to work and materials through dampness and cold. Use of open salamanders or any temporary heating devices which may be fire hazards or may smoke and damage finished work, is prohibited. Maintain minimum temperatures as specified for various materials and equipment as recommended by the manufacturer of the materials and equipment.

E. Electricity (for Construction and Testing): Furnish all temporary electric services.

1. Obtain electricity by connecting to the ARS electrical distribution system. The Contractor shall meter and pay for electricity required for electric cranes and hoisting devices, electrical welding devices and any electrical heating devices providing temporary heat. Electricity for all other uses is available at no cost to the Contractor.

F. Water (for Construction and Testing): Furnish temporary water service.

1. Obtain water by connecting to the ARS water distribution system. Provide reduced pressure backflow preventer at each connection. Water is available at no cost to the Contractor.

2. Maintain connections, pipe, fittings and fixtures and conserve water-use so none is wasted.

Failure to stop leakage or other wastes will be cause for revocation (at Contracting Officer’s discretion) of use of water from ARS system.

1.16 HISTORIC PRESERVATION

Where the Contractor or any of the Contractor's employees, prior to, or during the construction work, are advised of, or discover any possible archeological, historical and/or cultural resources, the Contractor shall immediately notify the Contracting Officer verbally, and then with a written follow up.