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GSA Public Buildings Service Greater Southwest Region

SCOPE OF WORK

Replacement of Cooling Tower & Pumps Laredo Federal Building/CH 1300 Victoria Laredo, TX 78040

Date: September 19th, 2018

Prepared by: Dana Ulanoff Project Manager: Sha’Mar Nolen

SCOPE OF WORK

The contractor shall provide all materials, supplies, labor, equipment and supervision, necessary to complete the demolition and replacement of cooling tower, pumps and VFD cooling tower fan motor controls. Upon completion of the project, this cooling tower shall be connected to the common building condenser water piping and DDC BAS (Building Automation System).

New cooling tower requirements:

Minimum 400 tons LWT/EWT (F) 94.1/84.1 78degf Wet Bulb GPM- 1200 (3 GPM/ton) Two fans @ 10 HP each Motor Davit with OSHA approved platform/Ladder & safety cage Service Platform/vibration switch/Electric sump heaters Fan Motors-Shaft Grounding Rings 316 stainless upper and lower sections *Cooling tower submittals shall be submitted with the proposal*

General Construction Requirements Keep work areas clean on a daily basis.

Demolition

Remove existing cooling tower, CHW/CW pumps.

ALTERATIONS

Cooling Tower

Provide and install 316 stainless steel two fan cooling tower. (upper and lower section 316 SS) Equal to or better than Evapco Model Number USS 29-3121 (See cooling tower Exhibit) New Cooling Tower to include the following:

316 stainless steel upper and lower section Premium efficiency inverter duty motors Reinforced basin for alternate steel support Ladder/safety cage/work platform Motor davit and base, vibration switch Two (2) each electric sump heaters 7KW each

The Tower Support Structure Tower support structure shall be in accordance to the tower manufacture’s installation requirement.

Tower Bypass Valve Condenser water piping: New piping shall be primed and painted white.

New piping shall be labeled with directional arrows and description (Example: condenser water supply, condenser water return). Reuse existing tower bypass valves.

Cooling Tower Electrical Provide and install all necessary and properly sized electrical conduit and electrical wiring for new tower.

Makeup Water Line and Meters Insulate tower makeup water line.

Map 15-minute interval history as a long term history on the Niagara Advanced Metering System Regional Niagara AX Enterprise Web supervisor for long term archive (GSA will provide tutorial aid upon request).

New Condenser Water /Chilled Water Pumps Install two (2) each new vertical inline condenser water (600 GPM/40FT and (2) two each chilled water pumps (480 GPM/65FT with inlet suction guide/strainer and triple duty valves. (flow control/check valve/shut off valve) Pumps shall be split coupling type. See Pump Exhibit Fan Coil & Mini Split

Install two each 4 ton chilled water fan coil units in the chiller mechanical room. Not to exceed 1600 CFM each. Installation shall include connecting to the supply and return chilled water main line. Insulate new piping, installing a new modulating valve, thermostat, strainer, flow control valve (9.6 GPM each), two new manual full port ball valves per unit, 7 day/24hr time clock, Merv 8 (2 inch) filter, electrical disconnect and labeling of the lines. Install copper condensate line and route to nearest drain. Insulate condensate line. Install a minimum 4 foot long supply air metal duct with supply air grills. Insulate supply air duct. Location in mechanical chiller room shall be approved by the COR.

Install a minimum 12,000 BTU ductless mini split for the

Gauges elevator equipment room located in the chiller room with wired thermostat and surge protector. Remove the window A/C unit and install stainless steel cover over window unit opening on both sides. Install insulation between the two covers minimum 3 inches in thickness. Minimum 24 SEER required for the ductless mini split. Install appropriate size condensate pump and route line to drain. Unit to be mounted on exterior wall next to chiller plant using the manufactures wall mounting kit.

Install new liquid filled gauges with gauge shut off ball valves in a manifold configuration.

One gauge per pump (Refer to Gauge exhibit) One gauge per condenser (Refer to Gauge exhibit) One gauge per evaporator (Refer to Gauge exhibit)

Condenser/Chilled Water Pump & Cooling Tower Fans VFD’s Install new appropriate sized frequency drives (VFD) and connect to new cooling tower fan motors, new condenser/chilled water pumps. The VFD for the cooling tower fans shall be located in the chiller mechanical room. Install new electrical disconnects for the cooling tower fan motors.

Lighting

Replace (20) existing two lamp pendant mount fixtures in chiller plant to new LED pendant mount fixtures. Performance shall be equal or better to Lighting Exhibit 1.

Building Automation System and Integration The entire chill water plant, cooling tower(s), heating water plant and the sequence of operation shall be programed on a nonproprietary BAS with the use of Niagara programmable MS/TP unitary plant controllers (or equal-Buy America Act compliant) DDC that are 100% programmable from the Niagara engineering workbench engineering tool. MS/TP controllers shall be available from multiple vendor neutral warehouse distribution channels and shall be vetted through the GSA during the submittal process. MS/TP controllers shall not require 3rd party programming or configuration engineering software. Refer to the SOO Exhibit and BAS 1 and 2 Specifications Exhibits.

Install MS/TP compatible water treatment loop controller Ex: Advantage Controls Megatron SS BACnet Controller (or equal) to replace existing controller to totalize, trend, and log water treatment system conductivity/fill/bleed on the local BAS JACE.

System- S. Temp

System- Calibration

e.) Integrate new controllers’ I/O points to existing JACE GUI and re-establish controller/meter point status on GSA Niagara AX Advanced Metering Vykon Energy Suite web supervisor server. Existing graphical pages will be updated with new IO point mapping. Create new history trends for new IO points.

f.) Develop Niagara Graphical representation mirroring that of other GSA JACE sites by reutilizing existing graphic “.px” file that has been developed of the water treatment system.

g.) Set up 14-day FIFO in the JACE history utility and as hyperlinks on the water treatment graphical representation page.

h.) Add condenser water temperature conductivity alarm programming to send a critical plant alarm via GSA BAS and SMTP server(s) if the condenser water conductivity rises over 1100ppm (adjustable) for more than ten (10) minutes (adjustable).

i.) Modify the PVC water treatment manifold in the proper locations and add one (1) pH electrode sensor, one (1) ORP electrode sensor, and one (1) Conductivity electrode sensor.

j.) Hot tap and install one (1) Makeup Conductivity sensor in the make-up water line.

Refer to Exhibits BAS for additional details and mapping requirements.

The new cooling tower’s control system shall communicate with existing Niagara building automated system.

All discrete heating/chill/condenser water point histories shall be recorded both as 15-minute interval, 14-day FIFO history logs but also as COV histories storing 100 intervals within the

JACE.

BAS Exhibit.

Utilyze and model graphics pages from the graphics design guide BAS Exhibit.

BAS Security Requirements:

Contractor personnel, and precisely the BAS DDC Controls integration technician performing installation and work on the BAS under this contract must possess HSPD-12 Clearance (must receive final fit determination) and GAC Cards in order to access GSA secured networks and sites.

Integration Technician:

Integration technician performing installation shall be certified on the Niagara AX JACE and TAC I/A series DDC controls for both installation and maintenance of the system. The integration technician performing installation shall have a proven minimum of 3 years Niagara experience 5 years total DDC controls experience performing the required tasks. The Contractor shall provide with their offer the integration technician’s resume and certification documentation.

Specifications and Requirements Valves connections, accessories and operators

Condenser water piping

Automatic isolation valves:

MATERIAL TECHNICAL SPECIFICATIONS

Where a particular manufacturer's product is specified, it is not intended to discriminate against other manufacturer's which are equal in quality of material, workmanship, appearance and function to those specified. Rather, it is intended to establish and indicate the desired standard of quality. If any tests are required to determine the equality of any substitutes, such tests shall be made by an independent authority as approved by the government. All expenses related to proposed substitutions shall to be paid by the Contractor. Proposed items are to be submitted with the proposal and shall be a basis for the award of the contract.

All materials and equipment shall bear evidence of the Underwriter's Laboratories Inc. Label (UL) or approval of other nationally recognized independent testing organizations adequately equipped and competent to perform such services when these standards are required and such product listing is available.

PRODUCT DATA AND SAMPLES

Product Data: Contractor shall submit one electronic set of tower product data including any valves, piping, insulation, BAS hardware, refrigerant monitoring system, catalog sheets, brochures, performance charts or other standard descriptive data provided by any Subcontractor, supplier or distributor. Product Data must be certified by the Contractor stating that it was reviewed and approved. Product to be used must be highlighted on the data sheet by the Contractor. Product Data used for construction must bear GSA’s stamp certifying final review and approval. No product shall be used that does not bear such stamp. Submittals shall be identified on a submittal register provided by the Contractor and transmitted using a transmittal letter.

Samples: Contractor shall submit physical samples establishing standards by which completed work is judged. Samples shall indicate color range, functional characteristics and shall represent exact material to be used on the project.

SPECIAL INSTRUCTIONS

Contractors shall submit proposal with a detailed cost breakdown. Cost Breakdown shall be submitted in CSI Master Format 2010. Proposal shall include make and model of all proposed equipment. Cooling tower selection shall include dimensions, operating weight and performance rating within submitted proposal. Cooling tower selection shall be submitted with the proposal. Cooling tower selection submitted with the proposal shall not be equal to or better than the cooling tower specifications in Cooling Tower Exhibit.

Contractor is responsible to comply with the “Buy American Act”. Buy American Act provides domestic construction material be used in performing this contract.

PERFORMANCE REQUIREMENT

The Contractor shall field verify existing conditions prior to any demolition.

/ tag out procedures, AHA / JHA’s for major activities, crane safety plan (if applicable) for crane erection and use. Include preferred location for crane set up, operator certification credentials, and crane inspection/certification documentation within thirty (30) of Partial Notice to Proceed.

SECURITY CLEARANCE REQUIREMENT

All Contractor personnel performing working on premises at GSA owned and operated buildings are required to pass a security background check conducted by the Department of Homeland Security/Federal Protective Service. No Contractor employee will be allowed to perform work on the building premises until employee has been determined to be suitable for hire by the Department of Homeland Security/Federal Protective Service. Badge will be required if working inside the building, (PIV HSPD-12).

In addition to the GSA security check, on all Customs and Border Protection facilities, an additional security check of all individuals entering the facility will be performed by Customs and Border Protection. The information required is Full Name, Date of Birth and Last 4 Digits of their Social Security Number. This information must be submitted to the Project Manager a minimum of 72 hours prior to entering the secured areas of the facilities for any reason. This includes all pre-bid and pre-construction meeting as well as all employees of the Contractor awarded the project.

Contractor personnel, and precisely the BAS DDC Controls integration technician performing installation and work on the BAS under this contract must possess HSPD-12 Clearance (must receive final fit determination) and GAC Cards in order to access GSA secured networks and sites.

WORKING HOURS

Work not impacting normal building occupancy shall be performed during normal business hours Monday through Friday 6:00 am to 6:00 pm. Any work affecting normal building occupancy needs to be scheduled after normal business hours/weekends and approved by GSA building manager.

Tower replacement shall occur over a weekend and be operational by the next business day. Contractor shall have the building’s O & M mechanic onsite during the tower replacement and include these labor costs in the proposal.

O & M is available for hire to escort/assist in locating any mechanical valve or other component that needs to be shut down to replace tower.

PERIOD OF PERFORMANCE

All work shall be completed within 45 calendar days after cooling tower delivery. It is estimated that it will take 6-10 weeks to manufacture the tower. A partial PNTP will be issued to place the order on the equipment upon approved submittals.

The Period of Performance shall be two hundred forty (240) calendar days after the Partial Notice of to Proceed has been issued.

LIQUIDATED DAMAGES

If substantial completion is not achieved, the Contracting Officer may assess liquidated damages at a rate of $158.37 per calendar day.

PROJECT SCHEDULE

Contractor shall submit to the GSA Project Manager a project schedule within thirty (30) days of P a r t ia l Notice of Proceed. The project schedule shall include a written narrative describing the major work activities, activities critical path and major constraints underlying the sequence and logic, all tasks to be performed under this project, duration of each task and tentative date/s each task will be performed. Project schedule must be approved by the GSA Project Manager prior to performing any work under this project. The project schedule shall incorporate milestone events specifics in the Contract, including as applicable PNTP, Substantial Completion and milestones related to specific work phases and site restrictions. The project schedule shall also include Contractor- defined milestones to identify target dates for critical events, based upon the Contractor’s chosen sequence of work. Microsoft Project or other similar format can be used for this schedule.

Progress Meetings The Contractor shall meet with the Government for the purpose of jointly reviewing the actual progress of the project as compared to the as planned progress and to review the planned/upcoming activities. The progress meeting will address the status of progress to date, potential delays, Changes, and Submittals. The contractor shall prepare and distribute meeting minutes within 3 days following each meeting. Progress meetings during PNTP shall be held biweekly. Progress meetings during FPNTP shall be held weekly.

CONSTRUCTION WASTE MANAGEMENT PLAN SPECIFICS (AFTER CONTRACT AWARD)

Fourteen days (14) from Partial Notice to proceed, the Contractor shall submit to the Project Manager, a draft Waste Management Plan for mixed debris recycling to GSA approval. The plan shall include (but not be limited to) the following: List of the materials to be reused or recycled.

The Contractor will record and track the type and quantity, by weight or each material salvaged, reused, recycled or disposed throughout the project. The Contractor shall provide a Construction Management Waste Management Report upon request of Substantial Completion.

FINAL PREPARATIONS

Contractor shall provide both classroom and hands-on training at a minimum four (4) hours to training to GSA maintenance personnel. This training will be conducted by the Tower Manufacture’s authorized service technician and the BAS integration technician. Training shall be on all new components such as meters, pumps, fan coil unit, ductless mini split, Nexus electric meter and chemical controller. The completed training sign in sheets shall be a deliverable for the closeout documentation.

Contactor shall provide two (2) sets of as-built drawings on compact disk (CD). As-built drawings shall be in Auto CAD format and shall illustrate all alterations performed under this contract. Final payment will not be authorized until all as-built drawings are provided.

Contractor shall provide three (3) copies (3 hard and 3 electronic) of owner’s (O&M) manuals for the tower, makeup water meter, pumps, blowdown meter, smart meter, fan coil unit , ductless mini split electric meter, chemical controller and VFD.

Contractor shall return all GSA Badges issued for this project. Final payment will not be authorized until all O&M manuals and badges are provided and returned.

SUSTAINABILITY

Green Purchasing: The contractor shall refer to the “Green Procurement Compilation” for all products being installed in federal facilities. The Green Procurement Compilation can be found at https://sftool.gov/greenprocurement.The standards found in this compilation shall guide all product purchasing decisions as they relate to federal facilities.

WARRANTY

All workmanship and materials shall be warranted for a period of not less than three hundred sixty five (365) days from date of acceptance by the Government (Standard Warranty) plus extended compressor parts and labor warranty (4 years).

END OF SCOPE OF WORK