Attachment 1 SOW 5-13-2021.pdf

Statement of Work: UV Sterilization Structure

1. Introduction: The Conte Anadromous Fish Research Laboratory has a requirement to demolish the existing effluent treatment structure and build a new structure to accommodate updated equipment obtained by the facility. The point of contact at the facility will be a Technical Liaison (TL) appointed by a

Contracting Officer (CO) with the Reston Acquisition Branch of the USGS. The

TL will be identified in the purchase order.

All work, including demolition to completion of the structure, must be completed within 21 days from the date the contractor receives the notice to proceed (NTP) to minimize downtime of the treatment system. If that deadline cannot be met contractor will coordinate with TL to provide a temporary system to treat water at no additional cost to the government. Work must begin within five (5) days from the date the contractor receives the NTP.

2. Background: The lab has a requirement to complete UV sterilization of their effluent before discharge to a waterway. The process water used at the center is a mixture of canal, well, and municipal water, used to rear fish and conduct experiments. It is consolidated and runs through a microfiltration system and then sterilized in a UV chamber before being released into the adjacent

Connecticut River.

The current structure was installed in 2007. A 12’ x 12’ wood framed shed was built on 8” concrete footings. The shed features T-111 plywood siding, asphalt shingle roofing, one 8’x6’6” overhead door and one 2’6”x 6’6” walk door. The floor is painted CDX plywood and the walls are insulated with fiberglass insulation and wall-boarded. Power is supplied by a 45 KVA three phase transformer mounted on the wall, which is wired via buried conduit coming from a junction box on the wall of the adjacent building into a subpanel. The subpanel also supplies power to a nearby shed and a pump control panel in an adjacent building via buried conduit. The equipment contained in the current building includes a micro-screen drum filter with backwash and control panel, a

UV sterilization chamber with control panel, a 50-gallon drum to collect sludge from the filter, an electrical subpanel and an obsolete control panel for a three-way valve.

The effluent to be treated and the treated water enter and leave the building on the west side and are contained in a wooden structure to protect them from the elements and to prevent freezing.

3. Scope of Work:

a) Demolish existing structure and equipment, ensuring that the transformer, UV chamber and drum filter are not damaged. The drum filter and UV chamber will be stored by the facility staff. The contractor is not required to install the UV chamber and drum filter.

The transformer will be stored by the contractor and reinstalled in new structure. Remove all debris from site or store in an approved container and remove at or before completion of project. Remove all electrical connections and plumbing. (See demolition plan)

b) Remove junction box and replace with rainproof wireway. Reconfigure conduit coming from junction box and subpanel to be integrated into new structure.

c) Provide 20’x20’x 6” concrete slab. Conduit and piping must be stubbed through concrete. The contractor will determine the location of piping and conduit.

d) Provide 12’x16’ pre-manufactured, commercial grade steel building with one 9’Wx8’H overhead door and one 3’0Wx6’6”H walk door.

Height at the eaves will be a minimum of 8’.

e) Install existing transformer and provide 100-amp sub-panel with GFCI circuit breakers for equipment and shed. Sub-panel will be NEMA 4 rated panel and suitable for installation in a wet area.

f) Connect all equipment to power sources. Provide at one overhead LED fixture inside structure, oriented so light is not obstructed by overhead door. Provide two outside LED fixtures, one over each door, one single gang duplex receptacle per inside wall and one double-gang duplex receptacle on the south wall. Receptacles and lights will be energized by a 120V 20amp GFCI breaker and one spare 120V 20amp GFCI breaker will be provided. Provide 240V electric heater with programmable automatic thermostat to maintain temperatures at 40-

50 degrees. Provide three 20amp 240V double pole breakers.

4. Applicable Documents: The contractor will provide measured drawing of proposed floorplan including piping and electrical service as part of their bid. All employees and sub-contractors must be licensed in the state of Massachusetts to perform their respective work, and will furnish copies of their certification or license numbers upon request from the Technical Liaison.

Design of the building and the equipment layout must meet requirements of all applicable federal, state, and local regulations, including but not limited to building and electrical codes and OSHA regulations for safe working clearances.

Building plans must have an engineers stamp and be delivered to the Technical

Liaison within 15 days of the date the contractor receives the notice to proceed.

5. Technical Requirements:

• All debris from demolition must be removed daily or stored in an approved rubbish container and removed from the site at or before completion of the project.

• Concrete slab will be built to the following standards: soil will be excavated, graded and compacted and 4 inches compacted aggregate added for drainage, thickness of slab will be a minimum of 6” with 12” grid of #4 steel re-bar reinforcement embedded. Two copper grounding rods will be driven a minimum of 5’ into ground and will protrude from slab. Piping and conduit will protrude from slab. PVC pipes and conduit will be wrapped with foam tape to prevent direct contact with concrete and allow for expansion and contraction.

Fasteners for building may be installed before or after pouring slab but must not crack or otherwise compromise the structural strength of the slab. Pad shall be completely level throughout to prevent the collection of water. Pad will join adjacent building wall and concrete slab with expansion joints to prevent cracking. Concrete will be rated to 4000psi and a broom finish applied with no flaws or voids and surface sealed after curing. All outside edges will be finished with a radius to prevent cracking. Concrete must be allowed to cure for 7 calendar days before construction of building begins. One 4’ high 6” diameter steel bollard will be installed at SE corner of slab to protect building from vehicle traffic and painted a safety yellow color.

• A sill plate of pressure treated wood will be installed around perimeter of building footprint and wrapped in waterproof membrane. Steel building will have galvanized structural framing fastened securely through sill plate to concrete slab. Building will feature 26-gauge ribbed wall and roof sheathing panels. Walls and roof panel insulation will have a minimum R-12 insulation value. Wall and roof panels will be coated to prevent rust and color will closely match other steel buildings on the campus. Colors must be approved by the TL. Roof will be double sloped with a minimum pitch of 6:12, will maintain a minimum of 8’ interior height and rated to hold the heavy snow load typically encountered in New England. Panels will be fastened to frame with fasteners and spacing as specified by manufacturer. Fasteners will be torqued properly to ensure integrity and prevent denting and buckling of panels. Any panels damaged during the course of this project will be replaced at contractor’s expense. Overhead and walk door will be designed specifically for use on steel buildings, will be installed and balanced to operate smoothly and safely and will not interfere with the operation of the mechanical systems. Doors will include keyed-alike locks and contractor will supply four keys to customer.

• Transformer may be installed on existing stand and will be grounded to both copper grounding rods. All electrical enclosures will have a minimum rating of NEMA 4. Subpanel will be mounted on a painted

¾” plywood panel fastened to the framing of building. All wiring must be encased in flexible metallic “liquid-tight” or EMT conduit joined with rain-tight compression couplings and secured to framing of building or slab with corrosion resistant fasteners. Receptacles will include plastic “in-use” covers and light switches will be rated for outdoor use.

• All valves will be schedule 80 PVC flange valves. All connecting and mounting hardware for water treatment will be stainless steel. Floor mounted equipment will be mounted on high density plastic or rubber blocks to prevent direct contact with concrete.

• Extreme care must be taken during the demolition and construction phases to not disturb or damage nearby equipment and buildings. Any damage caused during the performance of this contract will be promptly repaired at the contractor’s expense.

6. Deliverables:

Color samples and technical specifications of all materials and equipment must be furnished to TL and approved in writing within 14 business days of

NTP. Technical manuals in paper and electronic format will be provided for all mechanical equipment.

If the contractor is responsible for work delays that result in the work not being completed by the contract delivery date the contractor is required to construct a temporary treatment system at no additional cost to the government. The temporary system will have two 20-amp 240V circuits located adjacent to sump and will be covered on all sides to protect from the elements

The contractor will provide temporary sanitary facilities for their crew. Crew members will not be allowed inside buildings without authorization by TL and will be escorted by a staff member. All current safety regulations related to the COVID-19 virus will be strictly followed. The COVID-19 protocols are incorporated as attachment three (3).

All work will be inspected and approved by the TL before the task is considered completed. The contractor will repair any deficiencies in materials or workmanship at no additional cost to the government. The contractor will provide verbal progress reports to the TL or other representative authorized by

Contracting Officer at regular intervals during the period of performance. Any delays or cost overruns will be communicated to the TL as soon as they are encountered. The customer reserves the right to have the project inspected for integrity and quality of workmanship by a third party.

The project will be considered completed and authorized for payment only when approved by the TL.

All material and equipment are to be provided by the contractor. No tools, equipment or manpower will be provided by the facility. No government employees will assist contractor with unloading, installation or positioning of materials or equipment. Equipment may be stored in designated areas during the period of performance, but the facility assumes no liability against loss or theft.

The contractor will complete the project within the period of performance

(POP), any delays must be authorized in writing by the CO. Work may be stopped to avoid interfering with research projects. The work will be staged to allow access to the facility throughout the period of performance. Proper signage and barriers will be provided to restrict vehicle and pedestrian access to work areas and no hazardous conditions should be present in unguarded areas. All work must be performed during normal business hours, Monday-Friday 7:00 am to

4:00 pm. No weekend work may be performed unless authorized by TL. No work may be performed on Federal holidays without exception.

Demolition Plan for UV Shed

Pre-Demolition:

• Underground utilities will be located and clearly marked.

• Position dumpster or dump truck container as closely as possible to building to ensure ease of disposal and prevent spreading dust and debris outside work area.

• Install barriers and signage to prevent staff and public from entering work area.

• Disconnect power and water sources. Install lock out devices and tag.

• Disassemble and remove mechanical equipment. Equipment that is to be re-used in new building will be moved to pallets and stored by facility staff on-site. All other equipment will be delivered to recycling facility or arrangements will be made to do so.

• Drop cloths or plastic sheeting will be used to cover any nearby research equipment. Area around shed will be covered to capture any dust or debris from demolition. Storm drain adjacent to building will be covered.

Demolition:

• Cut and cap influent and effluent piping to prevent contamination of water sources.

• Remove doors and window and dispose of them.

• Demolish building interior. Use best practices to minimize dust and store materials in container immediately after removal. All recyclable materials will be separated and delivered to recycling facility.

• Demolish roof, sheathing and framing. Minimized sawing to reduce dust.

Store immediately in container.

• Remove concrete piers in one piece. Store in container or remove from site.

• Remove drop-cloths/sheeting and empty contents into container. Sweep or rake area and dispose of debris in container.

• Use water misting to minimize dust but do not over-saturate materials

• Remove container and recyclables as soon as possible after completion of demolition and ensure delivery to transfer or recycling facility.