7-Attachment -G.pdf

Attachment G

IFB 2000004148

ADDITIONAL SCOPE OF WORK AND SPECIFICS REQUIREMENTS FOR THE PROJECT

1. A mandatory site walk-through will be held on August 5, 2025 after the pre-bid at 12:30P.M.

EST. at Gerry Hyland Government Center. 8350 Richmond Highway Alexandria, VA 22309, Conference Room A-C. Pricing statements submitted by contractors, not present at the walkthrough will not be accepted.

2. In addition to providing a construction schedule, a “Detailed” Work / Phasing Plan must be submitted as part of the pricing submission package. Also, a narrative of the sequence and logistics on how your firm is intending to accomplish this project must be included as part of the Work / Phasing Plan. Sketches &/or Graphical material shall be used/included for further clarifications of your proposed work plan.

3. General Work:

Work will occur near occupied offices, roofs, mechanical rooms, parking areas, work areas, etc.; utility services cannot be disrupted, and noise restrictions apply. Full containment of dust & debris must be maintained at all time so protections must be in place prior to the start of any work that consists of demolition or hazardous conditions and will be maintained to allow operation of facility until condition / item is completed.

Diligent surveying of the existing conditions is imperative to ascertain, document, and otherwise determine the restrictions and limitations of the site as it relates to all aspects of the project. The contractor is responsible for confirming all field conditions and ensuring work can be accomplished as indicated. If any discrepancies are noted, or if work not specified is required, the contractor shall bring such matters to the Fairfax County FMD Project Manager’s attention prior to the deadline for submitting questions. If no discrepancies are noted or exceptions taken, it is assumed that all conditions are satisfactory.

Construction must meet and comply with the following regulations or standards:

Fairfax County’s Architectural & Engineering guidelines:

Link: Guidelines for Architects and Engineers | Public Works and Environmental Services (fairfaxcounty.gov)

4. Additional Details for Cooling Tower Tasks.

The Gerry Hyland Government Center has one (1) Evapco three (3) cell cooling tower model LSTA 5-121: The cooling tower shall be isolated during the renovation such that two

(2) cells are always operational throughout the project. All fill material shall be replaced.

Remove all existing fill material, drift eliminators and spray system. Provide new fill bundles, spray distribution system with nozzles/grommets and PVC drift eliminators.

Provide three (3) 20 hp cooling tower fan motors with factory installed Aegis grounding rings and motor heaters. Run new wiring and conduit for the integral heaters for all motors and connect per manufacturer’s instructions. Include all control wiring/logic to only energize integral heaters when the corresponding motor is deenergized. Provide VFDs for the fan motors and integrate into the existing BAS system. The three (3) pony motors shall be removed and disposed of.

Provide all new fan wheels, bearings, bushings, fan shafts, sheaves, drive belts, fan snouts and extended lubrication lines. Provide new basin heaters, thermostats and low water cut-off switches with new screw tight hubs for each tower cell. Replace all associated control boxes, contactors and disconnect switches. Water level controllers shall include on/off switch controls to disable each individually. Replace all the exterior conduit/EMT/liquid-tight/junction boxes for the cooling tower controls and power.

https://www.fairfaxcounty.gov/publicworks/guidelines-architects-and-engineers https://www.fairfaxcounty.gov/publicworks/guidelines-architects-and-engineers

Properly prep the interior of all three (3) cells including the cold-water basin bottom, walls and fan snouts including all necessary patching and coat with EvapLiner protective coating.

Thoroughly clean and prep structural support steel. Paint with exterior rust proof paint, such as POR-15, and top-coat with exterior grade alkyd paint, such as Duraclad.

5. Additional Details for HVAC Equipment Tasks.

The Gerry Hyland Government Center has one (1) Aaon RTU model RK-40-3-E0-31M (RTU-1), one (1) Reznor indirect gas fired heater model PCB-125HHR (MAU-2), and two

(2) Cook exhaust fans, model 270 CPV (EF-6) and 180 CPV (EF-4) that shall be replaced.

Provide new disconnects for all HVAC equipment to be replaced and tie back into the existing Building Automation System (BAS).

EF-4, EF-6, and MAU-2 shall be installed a minimum of 18 inches above the roofing membrane and allow for future roofing repair/replacement work if required. Provide all necessary duct and steel/base modification/replacement to accommodate the new height(s) and configurations for EF-4, EF-6, and MAU-2. Provide new aluminum roof curb adapter for RTU-1.

Install tee fittings and drip legs at RTU-1 and MAU-2 heater gas connections. Provide new gas regulators, shut-off ball valves and prep/paint all gas piping above the roofline for both units in exterior alkyd enamel yellow paint. Extend MAU-2 flue piping to exhaust above the enclosure wall. Provide MAU-2 remote control panel with summer/winter switch, blower, burner and clogged filter lights.

Replace all existing gas and duct supports with rubber base supports such as Dura block.

6. Permits & Inspections:

A building permit will be acquired by the project A/E firm and Fairfax County Project Manager will provide a copy of the building permit to the Contractor. All equipment, materials, and installation shall conform to the requirements of national, state, and local codes, laws, ordinances, rules, and regulations. When there is a conflict between the code and items listed in this scope, the code shall prevail. The contractor shall give all necessary notices, obtain all permits, and pay all

Government taxes, fees, and other costs, including costs for water, gas connections, and meters. Change order and add services will not be approved for permit fees. All such fees to be included in the project pricing statement. The contractor will prepare all necessary documents, prepare and/or procure and file any necessary architectural and/or engineered plans, and obtain required certificates of inspection for work and deliver same to owner before request for acceptance and final payment for work. Hot work welding permit is required when any welding, soldering, or brazing with an open flame is performed on site.

All necessary permits including but not limited to trade permits must be posted on site and a copy provided to the FMD Project Manager prior to the commencement of work.

The cost of all required inspections will be the responsibility of the contractor, change order requests will not be approved for inspection direct or indirect expenses. The contractor shall be responsible for scheduling and coordinating all required inspections, including but not limited to Fairfax County Land Development Services, Code and Inspections Office, Critical Structures, Planning and Zoning, and Fairfax County Fire Marshal. The contractor is to notify of, be included in and perform all tests and inspections in the presence of the FMD Project Manager. A documented and certified 100% inspection of the coating system shall be conducted in the presence of the FMD Project Manager prior to acceptance of the system. All defective areas shall be replaced or repaired before Fairfax County will accept the new work.

The contractor shall obtain an occupancy permit. The contractor shall close out all permits and provide evidence of such prior to requesting final payment.

7. Site Visit:

It is expected that the Offeror is to become familiar with and take into consideration site conditions that may affect the work and check all dimensions at the site.

It shall be understood that each Offeror has been given the opportunity to visit the site and knows the conditions under which the Work will be done. Lack of such knowledge will not constitute a basis for any claims whatsoever for extra compensation or extension of time.

The Offeror shall be held to have examined the project site and have satisfied the Offeror as to existing conditions and shall make all required allowances within the price proposal to carry out the work based on these conditions. No adjustments to the project time or the Project Sum will be allowed in connection with conditions that differ materially from those conditions that reasonably should have been disclosed by the Offeror inspections, tests and reviews that the Offeror could had made prior to the preparation of the submission of a Project Price Proposal, or should have performed base on appropriate knowledge of local site conditions in connection with the project. Local weather conditions and equipment requirements shall be considered as well.

The Offeror shall familiarize themselves with the owner’s operations in the area where work is to take place. No allowances or extras will be made to the Offeror on account of costs or expenses related to this paragraph or by error or oversight on the part of the Offeror to account for owner’s activities. It shall be expressly understood that the Owners operations will take precedence over any construction activity.

No payments will be made for reasonable delays or a stoppage of the work which would allow normal operations of the Owners activities to continue.

The Offeror shall acquaint themselves thoroughly as to the character and nature of the work to be done. The Offeror shall make a careful examination of the site of the work and inform themselves fully to the difficulties to be encountered in performance of the work, the facilities for delivering, storing and placing materials and equipment and other conditions relating to demolition and labor.

No plea of ignorance of conditions that exist on the site of the work, or difficulties that may be encountered in the execution of the work, as a result of failure to make necessary investigations and examinations, will be accepted as an excuse for any failure or omission on the part of the Offeror to fulfill in every detail all the requirements of the Project documents and to complete the work, or as a basis for any claim.

8. Project Duration and Phasing

Unless negotiated and agreed upon in writing otherwise by FMD, the date of substantial completion shall be no later than 26 weeks from the Notice-to-proceed (NTP). Exterior work, more specifically roof replacement shall not begin until May 1, 2026, and must be completed no later than October 31, 2026. Project completion and closeout shall be no more than two (2) weeks from substantial completion. Issuance of the Purchase Order shall be construed as Notice-to-Proceed. Substantial completion shall be defined as all equipment, materials, and products professionally installed and working as intended and final punch list items addressed to the satisfaction of the Owner.

The start date of the onsite work is to be coordinated with FMD Project Manager (NOT onsite staff) a minimum of four (4) weeks prior to beginning work, FMD will communicate and explain to the end user and occupants leadership the work and the date for the work to be done. If the Contractor cannot commit to that date and times, FMD may elect to us use a different contractor.

**NEED TO DEFINE THIS SECTION MORE ON A PROJECT-TO-PROJECT BASIS AND

SPECIFIC TO EACH AND EVERY PROJECT. ADDITIONAL INFORMATION WILL BE

REQUIRED FOR PROJECTS THAT NEED TO BE PHASED***

9. Submittals:

The Contractor shall develop and provide the Fairfax County FMD Project Manager with a Submittal Log. At a minimum, the submittal log shall include lead times for products, dates of submittals submitted to Contractor and Fairfax County, date Fairfax County A/E Firm responses received, Fairfax County review responses, returned to subcontractor, released for purchase, expected delivery date, actual delivery date, and status. The submittal log shall be updated and provided to the FMD Project Manager on a weekly basis.

Provide equipment and device submittals for review and acceptance prior to ordering. Provide shop drawings for steel modification/replacement associated with EF-4, EF-6 and MAU-2 for review and acceptance prior to ordering. Submittals shall be in electronic format submitted to the Project Manager through the Contractor’s construction management (CM) software.

Submit sample BAS graphics pages, control system calibration, check-test-start, and internal commissioning processes for review and approval. Provide screenshots or BAS local system login to allow the Fairfax County BAS team to review the completed graphics prior to uploading onto the County’s server. Ensure all revisions are made to both the local and server graphics.

Allow three (3) weeks for owner review and return of comments. At a minimum, the provided literature shall indicate (in SAE units) the capacities, ratings, gages, finishes of materials, weights, dimensions, electrical characteristics and connection requirements, and manufacturers installation instructions. All materials and equipment shall be, and conform to or exceed, as noted on the A/E design drawings and specifications.

It shall be understood that by the mere act of submitting specific equipment information, the Contractor has done their due diligence of reviewing the existing field conditions and acknowledges that the submitted equipment will at a minimum fit within the given confines of the existing spaces while ensuring the required code and maintenance clearances, be supported by the structural arrangements, be compatible with the electrical circuits, and is compatible with all of the controls’ requirements and capabilities. Provide clarification or notification via a cover letter on company letter head at the time of the submittal if the above understanding is not the case. Submittals found to have deviations without a corresponding cover letter will be returned without review.

Failure to make the necessary examinations or investigations of the site shall not be accepted as an excuse for any default on the part of the Contractor to fulfill in every detail the requirements of the said project and/or Agreement or be accepted as a basis for any claims whatsoever for extra compensation or an extension of time.

For items that require engineering and/or engineered drawings (such as control drawings), submit properly prepared drawings for review and prior to submitting for any permit. Allow three (3) weeks for owner review and return of comments.

Allow three (3) weeks for owner verification, review, and return of comments (approved or rejected as not accurate) for all As-built drawings.

The Contractor shall Review, Approve, and provide Submittals. Submittals represent that the contractor has selected and coordinated appropriate products, has reviewed the submittals, and has determined and confirmed the finite details and dimensions required to complete the work. By approving and submitting submittals, the Contractor represents that the Contractor has determined and verified materials, equipment, field measurements and field construction criteria related thereto, or will do so, and has checked and coordinated the information within such submittals with the requirements of the Scope of Work and of the Contract and Construction Documents. Submittals are

NOT an opportunity for the contractor to alter the scope of work. The Work shall be in accordance with approved submittals except that the Contractor shall not be relieved of responsibility for deviations from requirements of the scope of work and

Contract Documents.

The Contractor shall provide to the FMD Project Manager and “name of project A/E firm if design documents provided” all submittals via the contractor approved CM software, email and paper submittals will not be accepted. All submittals for materials and equipment shall be submitted through the contractor approved CM software for review prior to ordering the materials and equipment, allow 2 weeks for FMD and A/E review and comment. All details shall be active in the contractor approved CM software including but not limited to lead times for products, dates submittals submitted to contractor, A/E firm, Fairfax County, date Fairfax County and A/E firm response received, Fairfax County and

A/E review responses (pending approval, approval, approval as noted, rejected, and resubmitted), returned to sub-contractor, released for purchase, expected delivery date, actual delivery date, and status. The contractor approved CM software submittal log is a live document and shall be updated as such to allow for a timely and accurate view of information and documents. Contractor shall allow the contractor approved CM software to “list duration required for review” for Owner and or “name of project A/E firm” review and return of comments.

Submittal documentation for material and equipment shall at a minimum, provided literature shall indicate (in SAE units) the capacities, ratings, gages, as well as finishes of materials, weights, dimensions, electrical characteristics, connection requirements, and manufacturers installation instructions. Any materials or equipment noted as “long lead” items will require a dated and signed letter from the manufacturer or vendor noting actual lead time and delivery dates.

Failure to make the necessary examinations or investigations of the site shall not be accepted as an excuse for any default on the part of the Contractor to fulfill in every detail the scope of work or be accepted as a basis for any claims whatsoever for extra compensation or an extension of time. Submittals found to have deviations without a corresponding cover letter will be returned without final review for resubmission. It shall be understood that by the mere act of submitting specific information, the contractor has done their due diligence reviewing the existing field conditions and acknowledges that the submitted information meets project Scope of Work requirements and contract terms and conditions.

The approval of such Submittals shall not relieve the Contractor from responsibility for deviations from Drawings or the Specifications unless he has in writing called attention to such deviations, and the County has approved the changes or deviations in writing at the time of submission, nor shall it relieve him from the responsibility for errors of any kind in

Submittals. When the Contractor does call such deviations to the attention of the County, he shall state in writing whether or not such deviations involve any extra cost. If this is not mentioned, it will be assumed that no extra cost is involved for making the change.

Safety, Logistic, Phasing, and Lift Plan Submittals:

a. The contractor shall provide safety plans, logistic plans, phasing plans, and lift plans in Procore for A/E firm and FMD review, comments, approval, or rejection.

b. Four (4) plan submittals are required for this project. A minimum of 4 weeks prior to commencing construction activities (4-week requirement to include soft start items including but not limited to material delivery, site protections, dumpster, and porta toilets/sinks delivery, etc.,) the contractor shall provide and submit all plans as submittals via Procore.

i. Plan 1: project and site-specific site safety plan.

ii. Plan 2: project and site-specific logistic plan.

iii. Plan 3: project phasing plan with a schedule and diagram of activities.

iv. Plan 4: proposed staging, lifting, rigging plan.

c. Provide detailed staging, rigging, lift plan. Refer to Section 63.11 for further information.

d. All permits required for the use of proposed scaffolding, swing stages, JLG lifts or cranes are the contractor’s responsibility and shall be obtained and posted prior to work commencing.

10. Pre-Final and Final Owners Inspections “Substantial Completion”:

Substantial (Pre-Final) Completion Inspection - Notice shall be given to the FMD Project Manager at least seven (7) calendar days prior to the Substantial Completion Inspection.

The FMD Project Manager and other representatives will perform this inspection to verify that the project area is complete and meets the intent of this scope. A "Substantial Completion Punch List" shall be developed by the contractor as a result of this inspection.

The contractor shall provide the FMD Project Manager a copy of the punch list within two

(2) days of the Substantial Completion inspection. The Contractor shall ensure that all items on this list are corrected prior to notifying the FMD Project Manager that a "Final" inspection can be scheduled. Any items noted on the "Substantial Completion Inspection” shall be corrected in a timely manner and shall be accomplished before the Project Final Completion stipulated in Section 4 above.

Final Inspection - Notice shall be given to the FMD Project manager at least 7 calendar days prior to the final inspection stating that all specific items previously identified to the Contractor, as being unacceptable, along with all the remaining work performed under this project, shall be complete and acceptable by the date scheduled for the final acceptance inspection.

Prior to the Substantial Completion Inspection and Final Inspection, the Contractor shall employ experienced workers or professional cleaners for a final cleaning.

Substantially Complete shall be defined as the Work performed under this Scope of Work has been reviewed and found acceptable to FMD Project Manager’s best knowledge, information, and belief to be substantially complete in accordance with the Contract, Design and Scope of Work documents so that the Owner can occupy and utilize the Work for its intended use. The Substantially Complete milestone shall be identified in the Contractors construction project timeline and schedule.

Project Completion shall be defined as Work performed under this Contract, Design and Scope of Work has been reviewed and found to the FMD Project Manager’s best knowledge, information, and belief to be complete in accordance with the Contract, Design and Scope of Work Documents. The Project Completion milestone shall be identified in the Contractors construction project timeline and schedule.

11. Kick off and Progress Meetings:

Progress meetings shall be held onsite every week after issuance of the Contract Award.

Contractor is responsible for running the weekly progress meetings.

The Contractor is to provide a meeting agenda to the FMD Project Manager a minimum of 24 hours in advance of the scheduled meeting. The agendas shall include at a minimum:

a) Action item reporting – carryover from previous meetings (including new issues/concerns) with the responsible parties and agreed upon completion times noted.

b) Submittals status

c) Review of work completed since last progress meeting(s)

d) Review of work underway for the current week

e) Two-week work “look ahead”

f) Issues/concerns/New Items

Contractor shall be responsible for taking meeting notes and sending meeting minutes via email to the FMD Project Manager within one (1) business day of meeting adjournment for approval. The meeting minutes are to be succinct, and provide objective detailed descriptions that summarize the highlights, individual viewpoints, etc. of the topics discussed. Additionally, the minutes shall include action items that state when the responsible party(ies) are to have the task(s) completed. The agenda and minutes shall “carryover” action items from previous meetings until they are considered “closed.”

Approved meeting minutes shall be uploaded for distribution through the Contractor’s approved CM software.

A mandatory onsite preconstruction “kickoff” meeting shall be held not more than two weeks prior to commencement of onsite construction. The Contractor’s Project Manager shall provide a detailed presentation to include how the construction activities will start and progress to completion. This will include at a minimum a detailed and coordinated schedule (timeline) of when Contractors will arrive on site, the tasks they will be performing, a description of the impact to the facility and occupants, and the associated duration. The key personnel of the prime and their sub-contractors shall be present and be prepared to address questions the onsite staff may have. This meeting is for the benefit of county stakeholders and not to be used for site familiarization or coordination and discussion purposes of project tasks between tradesmen/sub-contractors.

The contractor shall submit weekly progress reports by 4pm, every Monday, via the Contractor’s approved CM software. The weekly report shall include at a minimum, daily work activities, job site conditions, pictures, number of Contractor and sub-contractor workers and number of hours worked per employee, indicate job progress on time per project timeline.

(Timeline from Notice to Proceed).

12. Daily Progress Reports:

Daily progress reports shall be provided by the contractor on a weekly basis. The daily report shall include at a minimum daily work activity, job site conditions, photos, supply and material inventory, number of contractor/sub-contractor workers and number of hours worked per employee, indicate job progress on time per project timeline (Timeline from issuance of PO). Daily progress reports shall be submitted by the contractor by 4pm each workday via their approved CM software.

13. Lift Plan:

A crane lift plan is required for any crane lift on the project. The lift plan must be submitted to a minimum of four (4) weeks prior to any lift.

14. CRANE LIFT PLAN:

A crane lift plan is required for any crane lift on this project. The lift plan must be submitted by the contractor through the contractors approved CM software a minimum of four weeks prior to any lift.

a. Lift Plan Minimum Requirements:

(1) By using site photos, show what the crane will look like in the environment. Illustrate swing angles, tip heights, capacities, and ground bearing pressures.

(2) Provide Employee training and certifications.

(3) Lifts exceeding 75% of the crane’s stability / structural capacity chart, requiring movement of a crane carriage with the load, personnel platforms, sensitive loads (long lead time, cost), loads requiring two (or more) hooks, work over occupied facilities or work involving encroachment on public rights of way are considered critical. These lifts must be authorized in advance. Critical crane lift plans, if authorized, may have to be reviewed by a professional engineer (the contractor shall budget the PE review within project budget). Additionally, a critical lift JHA shall be submitted with the crane lift plan.

(4) Crane Lift Plans must be based on “worst case” combination of load weight with chart deductions and lift radius for a specific crane configuration in a specific location.

(5) The Crane Lift Plan may be valid for more than one day, as long as the configuration, location, maximum expected load, and maximum expected radius does not change. Use multiple lift plans for multiple locations.

(6) Work that is not anticipated in the Crane Lift Plan but may arise due to site conditions (moving equipment, loading materials onto floors, etc.) must be reviewed with the Fairfax County Project Manager prior to hoisting. Changes affecting crane configuration and / or location may require the Crane Lift Plan to be amended.

b. The Contractor must provide the following information along with the Crane Lift Plan:

Competent / Qualified Person Designation Forms for A/D Director, Operator, Rigger, Signal Person Load Chart (complete with notes) Range Chart Dimension Illustration and Specifications for Crane Lightning and Wind Restrictions (from operator’s manual) Area (Quadrant) of Operation Diagram Operator’s License, Operators Training Information, USDOT Medical Certification, OSHA 10/30 Hour Course Completion Cards, as may be required by the project.

Jurisdictional Registration, if required

JHA for Assembly / Disassembly of Crane, Severe Weather, Truck Load / Unload, Etc.

JHA for Power Line Encroachment 3rd Party Inspection Certification and Report – see Crane Lift Plan for requirements (Note: The inspector shall be certified with the CCAA).

Weights of Materials Rigging Plan Logistics Plan

c. Crane Location and Clearances

a. Current certification of crane operator

b. Name and certification of the Lift Director. The Lift Director shall be someone who is experienced and understands the task to be performed. This is the person who is in charge of all lift operations.

c. Type of crane to be used (rubber tire, track, etc.).

d. Provide a to-scale plot plan showing crane location, adjacent buildings, pipe racks, and other significant obstructions within load swing radius. Indicate direction and span of swing.

e. Provide a to-scale elevation depicting crane, adjacent structures, and load

f. What is the horizontal distance from the crane center pin to the nearest structure?

g. What is the minimum clearance from boom to highest point of structure during a pick?

h. What is the minimum clearance from load to highest point of structure during a pick?

i. What is the minimum distance from boom to load during a pick?

j. Will the load or any part of the crane be over any active piping, tanks, or equipment during a pick? Please explain:

k. Have underground site utilities been identified and located?

l. Will outriggers be located over underground utilities? If so, please explain protective measures to be taken:

m. Describe signaling procedure – who will be responsible for signaling? Will hand or radio signals be used?

SCAFFOLDING / SWING STAGE PLAN:

A scaffolding and/or swing stage plan is required on this project for use of either method. The plan must be submitted a minimum of three weeks prior to use and fall protection/safety information must also be included in the contractor’s Site-specific Construction Safety Plan. Provide all necessary employee training and certifications as required. Designs for and erection & use of scaffolding and swing stages must comply with OSHA 29 CFR 1926.

a. Scaffolding Plan Minimum Requirements:

(1) Indicate type of scaffold to be used. Provide scaffold design by qualified person. Tube and coupler scaffolds over 125’ in height must be designed by a registered professional engineer.

(2) The erected scaffold must be able to support its own weight and at least four times the maximum intended load. Scaffold design must incorporate a realistic assessment of maximum intended loads on the scaffold at all stages of erection and loading. Wind loads must be considered when using mesh wrap. Scaffold must be designed to ensure that it can support the weight of both horizontal and lateral loads. Provide maximum working loads and number of people using the scaffold at any one time. Indicate the safe working load/load class, maximum leg loads, and maximum tie spacing (horizontal, vertical and tie duty). Construction and loading must comply with engineered designs and manufacturer’s requirements.

(3) Provide platform boarding arrangement & number of boarded lifts, nature of ground conditions and/or supporting structure, and information on the structure/building that the scaffolding will be erected against.

(4) Provide any additional details such as beamed bridges, fans, loading bays, etc., which may be a standard configuration or specifically designed and any other relevant information relevant to the design, installation, or use of the scaffold.

(5) Show the type and locations of access onto and off the scaffolding as well as any specific requirements or provisions for pedestrian traffic, tie in locations, and mechanical handling plant (e.g. hoist). Include barricade plan with use of warning signs.

(6) Provide heights & lengths and any critical dimensions which may affect the scaffolding in any way. Include maximum bay lengths and lift heights.

(7) Provide schedule of time needed to erect and dismantle the scaffold. Also, include time that scaffold will be in each location (to coincide with phasing plan).

(8) All scaffolding must be properly measured, leveled/stabilized, erected, dismantled and altered in a safe manner.

(9) Provide copy of checklist that will be used for erecting and inspecting scaffolding.

b. Swing Stage Plan Minimum Requirements:

(1) Window washing davits must be inspected and certified by a competent 3rd party inspection/engineering firm prior to use.

(2) Indicate type and size of suspended scaffolding to be used. Provide a detailed design plan for erecting suspension scaffolding taking into account the limitations of the support structure, and max operational wind speeds or lateral forces in which it may be exposed to during erection or operation. Provide maximum working loads and number of people using the swing stage at any one time. Indicate the safe working load/load class include information on projection and fulcrum (if applicable). Use and loading must comply with manufacturer requirements.

(3) Provide information/drawings indicating the type of suspension set up that will be used at the roof. Include pertinent information for counterweights and proposed locations for staging weights.

(4) Identify anchoring for tiebacks on beams, lifelines and plan drops.

(5) Provide cutsheets for proposed cradle. Indicate locations for entries and exits to and from the

Cradle. Cradle to have guardrails, mid-rails and toe-boards.

(6) Provide documentation for electrical requirements/connections. Confirm site has proper power source necessary to meet requirements.

(7) Provide copy of license/certifications for individuals erecting and using suspended scaffolding.

(8) Provide copy of checklist that will be used for erecting/installing and operating suspended scaffolding.

(9) Provide phasing plan and schedule that shows the areas to be completed and the duration to complete each section. Include plan/location for staging suspended scaffolding when not in use.

(10) Show provisions for pedestrian traffic and include barricade/fencing plan with locations of warning signs.

OTHER PLAN FOR OTHER LIFTS

Similar lift plan shall be submitted for all lifts including but not limited to cherry pickers, electric scissor lifts, forklifts, etc.

NO warranty or certification of the suitability of the above plans is accepted by the County of Fairfax, Virginia. It is the responsibility of the Contractor, Subcontractors, Crane Operator and/or Riggers to ensure that they and their employees are qualified, competent, properly equipped and properly trained to perform the activities outlined in these plans.

15. Existing Conditions:

Existing finishes shall be protected. Any cutting or removal of existing materials or equipment including but not limited to masonry, piping, louvers, drywall, ceiling tile, grating, siding, brick, painting, etc., to complete this turnkey project shall be the responsibility of the contractor to repair or patch to match existing and return to original or better condition. All penetrations through fire rated assemblies shall be closed and sealed per applicable State and Local Codes.

16. Controls:

Reference drawing M001

Preserve existing controls for all systems unless stated otherwise below (Controls system was upgraded to Trane Controls).

Cooling Tower:

Remove low speed (pony fan motor) cooling tower fan operation from the sequence of operations. High speed fans shall modulate speed via VFDs to maintain the condenser water temperature setpoint 41°F (adj.) in economizer and 85°F (adj.) in mechanical cooling.

Provide hardwired start/stop and speed control from the BAS controller to the cooling tower fan VFDs.

Provide BACnet points via MS/TP from each of the VFDs to the existing BAS:

Object ID Object Name

Active Text

Inactive Text

Units

PV

Access

BV2 FAULT ACT FAULT OK R

BV7 DRIVE READY READY

NOT

READY

AV1 OUTPUT FREQ Hz R

AV3 OUTPUT VOLT Volts R

AV4 CURRENT Amps R

AV6 POWER kW R

MSV0 HAND AUTO REF R

MSV1 ACTIVE FAULT 1 R

MSV4 ACTIVE WARNING 1 R

RTU-1:

General: Unit shall run by BAS input based on the building occupancy schedule. Provide all required sensors to execute the sequences below.

Unit shall modulate heating, cooling and hot gas reheat to maintain the temperature setpoint 70°F (adj.)

and 50°F (adj.) relative humidity controlled by temperature and enthalpy sensor located in the supply duct downstream of the supply fan.

Heat wheel shall be energized when outdoor air enthalpy is greater than return air enthalpy (exhaust air) in cooling mode and when the outdoor air enthalpy is lower than the return air enthalpy (exhaust air) during heating.

In addition to the existing hardwired control points, provide BACnet points via MS/TP from the RTU to the existing BAS:

Object ID Parameter Description

AI:3 CONTROL STATUS

OCCUPIED/UNOCCUPIED

STATUS

AI:4 HVAC MODE OPERATIONAL STATUS

AI:9

SUPPLY AIR

TEMPERATURE SUPPLY AIR TEMPERATURE

AI:12

SPACE TEMPERATURE

(DUCT MOUNTED)

SPACE TEMPERATURE (DUCT

MOUNTED)

AI:13

SPACE HUMIDITY (DUCT

MOUNTED)

SPACE HUMIDITY (DUCT

MOUNTED)

AI:42

MOD HOT GAS REHEAT

VALVE POSITION

CURRENT % OF MOD HOT

GAS REHEAT VALVE

AI:43 MODGAS VALVE POSITION

AI:144 ALARM STATUS

INDICATES AN ALARM

CONDITION

AI:145 OUTDOOR ENTHALPY

CURRENT OUTDOOR

ENTHAPLY

AI:149 RETURN AIR ENTHALPY

CURRENT RETURN AIR

ENTHAPLY

AV:1

OCCUPIED COOLING

SETPOINT

OCCUPIED COOLING

SETPOINT

AV:2

OCCUPIED HEATING

SETPOINT

OCCUPIED HEATING

SETPOINT

AV:27

ECONOMIZER ENABLE

SETPOINT

ECONOMIZER ENABLE

SETPOINT

AV:78

OUTDOOR AIR

TEMPERATURE

OUTDOOR AIR

TEMPERATURE

AV:79 OUTDOOR AIR HUMIDITY OUTDOOR AIR HUMIDITY

AV:84

ENTHALPLY ENABLE

SETPOINT

ENTHALPLY ENABLE

SETPOINT

BI:3

ECONOMIZER ENABLE

STATUS

ECONOMIZER ENABLE

STATUS

BI:6 FAN PROOF FAN PROOF

BI:7 EXHAUST HOOD STATUS EXHAUST HOOD STATUS

BI:24 FAN PROOVING ALARM

AIRFLOW FAILURE FROM

MAIN FAN

BI:25 DIRTY FILTER ALARM DIRTY FILTER ALARM

BI:26 EMERGENCY SHUTDOWN EMERGENCY SHUTDOWN

BI:34

HIGH SUPPLY TEMP

CUTOFF HIGH SUPPLY TEMP ALARM

BI:35

LOW SUPPLY TEMP

CUTOFF LOW SUPPLY TEMP ALARM

BI:47

ON BOARD RELAY 1 MAIN

FAN FAN RELAY STATUS

BI:48 ON BOARD RELAY 2

CONFIGURABLE RELAY FOR

HEAT WHEEL STATUS

BI:77 COMPRESSOR A1 ENABLE COMPRESSOR A1 ENABLE

BI:78 COMPRESSOR A2 ENABLE COMPRESSOR A2 ENABLE

BI:89 COMPRESSOR B1 ENABLE COMPRESSOR B1 ENABLE

BI:90 COMPRESSOR B2 ENABLE COMPRESSOR B2 ENABLE

Description of connected points

MSV MULTISTATE VALUE

AI ANALOG INPUT

BI BINARY INPUT

AV ANALOG VALUE

BV BINARY VALUE

Indirect Gas Fired MAU unit:

When enabled through the BAS or manual override of the HOA switch, OA damper shall open, and fan shall start and run continuously after the damper end switch has proven open. Unit shall modulate gas heating as required to maintain 55°F discharge air temperature.

The MAU shall be connected to the existing BAS system through BACnet MS/TP and provide all system points on the Graphical User Interface (GUI). Remove the existing freezestat from the control system.

Create as-built operation and maintenance manual documenting all control work. Install laminated panel-mounted or wall-mounted field wiring diagrams for all new controllers and thermostats. Label all field devices to match reference tag in documentation.

Submit control system calibration, check-test-start, and internal commissioning processes for review and approval. Include documentation verifying these processes have been completed and indicating the results of same in the control system operations and maintenance manual.

As part of the training (refer to Training section), conduct an on-site demonstration of the completed system functional performance and system graphical user interface operation.

17. Test & Balance:

For the systems impacted within the scope of work, provide testing & balancing of the HVAC equipment and systems after installation and startup of new equipment by an AABC or NEBB certified test and balance company. Provide an electronic copy of results to FFX- FMD. Allow three (3) weeks for review and return of comments. Submitted Air balance report shall include but is not limited to procedures and results for the following: Air test and balance on outside, supply, return/exhaust air, airflow traverse, total air static pressure and pressure drop, temperature measurements in heating and cooling, electrical and RPM measurement. Provide plans with the TAB report that indicate equipment/device locations.

The report and the plans shall use consistent labeling for ease of cross-referencing between them.

18. Commissioning:

This project requires commissioning which entails a series of firsthand observations and contractor provided documentation to show as proof to the owner that the new equipment has been installed, started, and performs per the expectations of what would reasonably be considered as a quality installation. Provide all necessary labor and tools to meet the requirements of the owner approved commissioning efforts. Provide a commissioning outline within a maximum of four (4) weeks after the awarding of the project. Allow three

(3) weeks for owner review and return of comments. The final outline shall be provided electronically through email or the Contractor’s CM software and will be utilized for subsequent sections that include testing results and other pertinent commissioning documentation.

At a minimum, the outline shall include the following separated and individually tabbed sections:

1) A table of contents with all sections identified.

2) A list of the names and roles of the parties involved.

3) A list of equipment to be commissioned.

4) Manufacturer’s installation checklists and start-up forms as well as any pre-functional testing procedures the contractor may deem appropriate for each type of equipment.

5) Contractor provided functional performance testing procedures for each type of equipment and controls to demonstrate to the owner that the equipment and controls respond in a fashion commensurate with the control inputs (such as heating and cooling demands).

6) A list of deficiencies found and the procedures and responsible parties for rectifying them.

7) Subsequent testing results to address deficiencies previously documented.

8) Final and signed off start-up and pre-functional testing forms.

9) Final and signed off functional testing forms.

Equipment and controls shall be functionally tested at the conclusion of equipment testing and balancing. The contractor shall demonstrate the correct operation of all control parameters for each piece of mechanical equipment and corresponding sequence of operation. Demonstration shall be in the presence of the FMD project manager, a site representative, and the owner’s controls representative.

The primary focus for the commissioning of this project is for FMD to have firsthand knowledge of the equipment’s proper and complete installation and operation and be provided with corresponding documentation of the processes and results of these efforts.

The project will not be considered complete until FMD has signed off on the acceptability of the installation and performance of the installed equipment and devices. You are encouraged to contract with or engage a third-party commissioning agent if you believe your company is not capable of fulfilling these requirements to FMD’s satisfaction.

19. Training:

Provide equipment and controls training at the site at final completion.

A. Training shall be scheduled once all testing, air balancing, commissioning and punch list items have been completed to the satisfaction of the FMD Project Manager. Training shall be scheduled two weeks in advance of the requested training date.

B. O & M manuals shall be used as reference material for the onsite training. Other training materials (Contractor provided) that are deemed appropriate may be used as well. Provide the FMD Project Manager with a training agenda and a copy of all training material a minimum of one week prior to the scheduled training date. This material is not considered a project submittal but will be reviewed and any resulting comments will be conveyed either verbally or via email. Revisions to the material may be required as part of this process.

20. Closeout Documentation:

Electronic copies of all close-out documentation package shall be provided to the FMD Project Manager upon final acceptance of the project via Procore or the County’s file share system (Egnyte). All project pictures to be provided individually in JPEG format, other project documentation to be provided in PDF format unless otherwise specified in this Scope of Work document. The close-out package shall at a minimum include the following:

A. Where new equipment, materials or products have been installed provide:

Typed list of all materials, products, and equipment installed as part of the project including.

▪ Typed list will include:

• Unit, equipment or product,

• Manufacturer, Model Number, Serial Number, and Color,

• Diagram of the building showing where each product was installed,

• Pull test results, B. A copy of all submittals with FMD review sheets.

C. Operation and maintenance manuals to include detailed material list and manufacturer maintenance requirements/procedures.

D. Finish schedule shall be included for all new finishes.

E. Before and after photos of the project.

F. All warranties

G. As-built document in most recent version of AutoCAD as well as PDF file.

H. Completed punch lists (Substantial completion and Final).

I. Copies of permits, any related inspection reports, and occupancy certificates.

J. Copies of documents for recycled materials and quantities (weights).

21. Change Orders:

All Change Orders MUST be approved in writing by the Fairfax County FMD Project Manager prior to any additional work. No oral statement by any person will in any manner or degree modify or otherwise affect the terms of this project and/or Agreement.

22. Supervision:

The Contractor shall have a competent superintendent, satisfactory to the Fairfax County FMD Project Manager, on the site at all times during the progress of the work. The superintendent shall be familiar with and be able to read and understand plans and specification, keep a copy of the contract documents, scope of work, approved submittals, and approved building permit onsite and be capable of communicating orally and in writing (in English) with the Fairfax County staff, inspectors, and the Contractor’s workers. The Contractor shall be responsible for all construction means, methods, techniques, sequences, and procedures, for coordinating all portions of the work under the Contract, except where otherwise specified herein, and for all safety and worker health programs and practices. The Contractor shall notify the Fairfax County FMD Project Manager, in writing, of any proposed change in superintendence, including the reason therefor, prior to making such change. The contractor must use qualified, licensed and experienced employees. The contractor shall apply strict quality assurance and quality control on their work product.

23. Passes and Badges:

Due to enhanced security measures, Contractor employees, representatives and sub-contractors are required to display Fairfax County Contractor identification badges above the waist at all times while on the job site, supplied by the County. Contractor employees, representatives and subcontractors who arrive at the job site without appropriate identification badges will immediately be dismissed from the job site. All supplies, materials and equipment are subject to security inspection. All contractor and subcontractor employees must pass to the satisfaction of the Fairfax Security Chief a Fairfax County Criminal History Check at a cost of approximately $34 per person payable to Castle Branch Inc.

The Contractor shall assume all costs directly and indirectly associated with obtaining the Fairfax County Criminal History Checks and Fairfax County Contractor identification badges. Failure to obtain a security badge shall not be a cause for contract performance time extension. The Contractor shall immediately turn in all terminated employee’s badges to the issuing office.

24. Work Hours and Use of Site:

The business of the building shall not to be disrupted. Contractor “normal” work hours shall be between 7:00am to 4:30pm Monday through Friday. Weekday, weekend and Holidays work hours must comply with the Fairfax County Noise Ordinance. Obtain advance approval from the Project Manager for Contractor personnel to remain on site beyond normal working hours (FMD staff cannot issue an exception to the Noise Ordinance).

Notify the Project Manager at least 72 hours in advance to obtain approval for access to the job site or work outside of normal working hours.

Limit use of premises to work in areas required for this project. Do not disturb portions of site beyond areas in which the work is required and confine construction operations accordingly.

Restrict deliveries and removal of bulk materials, supplies, demolition debris and equipment to and from the project site to the FMD Project Manager Authorized haul routes and the buildings cargo elevator.

The facility business hours are Monday: 8:00am to 7:00pm and Tuesday to Friday 8:00am to 4:30pm, especially for clinic operations. The loss of HVAC during business hours is not permissible. The contractor will be required to provide supplemental HVAC any time HVAC work requires interruptions to any of area of the building. The shutdown, removal and replacement of any HVAC equipment and any crane lifts shall occur during off hours when the facility is closed and unoccupied. Given this time restriction for actual equipment replacements, it is required that all preliminary and preparation work such as controls, safeties, wiring, sheet metal, piping, concrete work, ductwork, etc. be completed and fully checked for operation, prior to the actual replacement of HVAC equipment.

25. Sub-Contractors:

The Contractor shall be solely responsible for any and all of the work done by his subcontractors or other employees and all orders or instructions from the Fairfax County FMD Project Manager shall be through him to them.