Attachment 1_SOW Repair Reservoir Cover and Install Filtration System updated 02JUN23_Redacted.pdf

Statement of Work

Repair Reservoir Cover and Install Filtration System

U.S. Horticultural Research Laboratory

(Picos Road Farms) 2001 South Rock Road

Fort Pierce, Florida 34945

Prepared by:

Updated: 02JUN23

1 ) Statement of Work:

Contractor shall furnish all labor, materials, and supplies to perform the following work for U. S.

Department of Agriculture, Horticultural Research Laboratory (Picos Road Farms), 2001 South Rock Road, Fort Pierce, Florida 34945

All work shall be completed in accordance with all local, state, and federal codes and regulations. All work shall also meet the requirements of the ARS Facilities and Design Standards (P&P 242.1). The P&P 242.1 document can be found at: http://www.afm.ars.usda.gov/ppweb/PDF/242-01M.pdf.

All work shall be accomplished in a professional manner and in accordance with good workmanship and acceptable practice.

Contractor is responsible for inspecting the site and for determining the exact requirements of the project.

Contractor’s working hours shall be scheduled to coincide with the normal working hours (7am-4pm) at the site. Should it be necessary to schedule working hours other than normal working hours, contractor shall arrange for access to the work area with the Contracting Officer’s Representative (COR) at the site at least three days prior to the need.

2) Project:

The project will be done in two phases. Phase 1 will consist of repair of infrastructure and installation of the filtration system. Phase 2 will consist of removal and disposal of the damaged reservoir cover and replacement with a new reservoir cover as specified.

The existing reservoir cover is torn and must be replaced. The system requires the installation of a filtration system and existing delivery system upgrades to filter out reservoir contaminants before the reservoir cover can be removed and a new cover installed. The first storm damaged the reservoir cover allowing for contaminated water to intermingle with the clear water stored in the covered reservoir. Now that the reservoir is open to contamination a filter station is required to prevent major contamination of the micro sprinkler irrigation system. There was also damage to the main pump installation, aged diamond plate decking is deteriorating and the windstorm that damaged the cover has pushed this structure to failure. Most of the high voltage transformer boxes have lost coverings, exposed breakers and wiring to the environment and wildlife on the farm posing several dangers. All of these repairs are to support the mission critical work of the Picos road breeding farm supporting the research of the United States Horticultural Research lab at 2001 South Rock Road.

Background:

When the Picos farm facility irrigation reservoir, main pump station, and electrical system was installed 1999 it was expected to last 20 years. The reservoir cover was constructed to prevent any evaporation and contamination of the stored irrigation water, it was a completely enclosed reservoir. Because of the high-quality water supplied to the reservoir and the lack of any contaminants, it was deemed there was no need for outgoing filtration of irrigation water. Water is fed directly from the reservoir to micro sprinkler emitters in the field. The system is designed with a dual purpose, to irrigate the tree crops and to be used for cold protection. Micro sprinklers are a standard citrus industry method for making efficient use of irrigation water and used during frost and freeze events to create a “Microclimate” that has been shown to raise ambient temperatures by several degrees. The emitters also create an “Ice blanket” over the bud union and lower trunk of the tree allowing regrowth of trees in the event of a catastrophic freeze. This has been shown to be very effective method of cold protection and information taken during the 1989 Florida freeze support this. Repairs to this facility are mission critical repairs and to not make these repairs will undermine and endanger the research involved in the stated mission of this facility and risk losing years of breeding material and set back the research by years.

The reservoir cover was damaged by winds from hurricane Ian and further damaged by hurricane Nicole.

There is no longer effective bio security in the reservoir, and this will soon cause massive failures with the irrigation system. The system is a “Micro sprinkler” system with emitter orifices as small as .05”. It is very easily plugged and a tremendous and tedious job to maintain. The cost of emitter plugging is not only the man hours to maintain the system, but also the lost irreplaceable breeding material from either lack of irrigation or inadequate freeze protection. The proper operation of the irrigation system is mission critical.

More of the additional infrastructure was damaged in the storms. The main pump station has deteriorated with time from the large amounts of salt deposited from recurring hurricanes and the easterly trade winds common to this area. This structure that supports the main irrigation pumps and accompanying control systems is in critical need of refurbishment before they fail and damage the equipment, they are supporting requiring more money to spent on repairs. The decking is completely rusted through in areas, and the control system cabinet is in danger of falling over and damaging the motor controller and associated irrigation system controls. This is a very unsafe condition for Lab personnel to perform the continuously required pump and valve maintenance.

The covers of the transformer/Breaker boxes at all distribution stations and well stations have been damaged by wind and salt air. The storms left considerable damage in the aftermath, blowing covers off and exposing breakers and wiring to the elements and anyone working in the vicinity. The transformer and breakers are integral to box and must be replaced as a complete assembly.

Contractor requirements:

Phase 1:

Filter Station The contractor shall provide a filter station capable of filtering the full flow from all three irrigation pumps running at full speed plus 10% as a safety factor 1400 gpm per pump, 4200 gpm total flow. The system shall be capable of connecting to the Irrinet control system and of backflushing independently of the control system. The new system shall be tied into the current irrigation pump system and mainline and be tied into the well feed for emergency use, there shall be a booster pump in the line between the well feed and the filter station to facilitate irrigation when the main pump station or reservoir feed in unavailable. The booster pump shall have a minimum capacity of 1500 gpm. All connections shall be valved. All plumbing connections must be of adequate size so minimum pressure loss is attained. The filter station must be configured so that it fits in the space allotted and can be easily connected to the existing infrastructure. The filtration shall be by stainless steel medial filtration tanks, filled with the appropriate silica media sand and gravel. Each filter bank shall be connected with stainless steel piping and manifold assemblies. The contractor providing the filter station assembly and installation must demonstrate that the system will function properly through a range of output from the high rate of 4000gpm to the low rate of 10gpm through all flow regimes as calculated at the flowmeter prior to government acceptance.

Project materials required in the filter station fabrication and installation in order to work with existing infrastructure:

● 16 Fresno or equivalent Stainless Steel 48” media tanks H pattern

● 14” steel inlet and outlet manifolding for tanks

● 4” flush assembly

● 16 station flush controller

● 20/30 silica sand for media filters

● ¼” x ⅛” gravel for media filters #3 filter gravel

● 10” gear-operated butterfly valves with 5’ extensions (2) to create bypass from reservoir to wells in case of pump failure

● 45’ x 14’ x 6” concrete slab for equipment support

● Steel underground manifolding to connect from filter station to mainline 5 RB Cornell pump or equivalent and electric motor, tied into the main pump power feed with separate disconnect. This pump must be able to use the entire well flow, approximately 1400 gpm, and feed it to the filter station at 50 psi to be a comparable replacement for the main pumping station should it be unavailable for any reason. All plumbing connections, electrical connections, and valving are to be included in the filter station assembly by the contractor.

6” butterfly valve 2- 10” x 6” concentric reducer 10” antisiphon VFD to maintain 50 psi system pressure.

Main pump station repairs The steel base that supports the main pump station is critically weakened due to saltwater corrosion and suffered severe structural damage by flying debris during hurricane Ian, punching holes in the deck. The current condition of this structure represents a danger to anyone checking equipment, making repairs, or doing preventative maintenance. The entire station requires disassembly, the roof will need to be removed to remove axial flow pumps, do what refurbishing is needed for the pumps, electrical control box removed, and any other plumbing or electrical components. The decking must be replaced, manifolds repaired or replaced, and then complete reassembly.

Supply and install (1) new structural steel 7’-2” W x 14’-0” L structural pump support deck and pump discharge manifold with new discharge manifold. The new plumbing will connect to and be capable of handling the volume and pressure from all (3) pumps. All project plumbing and flanges will be new. The existing Clay valve will be rebuilt and re-installed. The new steer deck will have multiple lockable sump access hatches.

Coating- The new deck and manifold will be sandblasted, and epoxy coated for extended corrosion protection.

a) Mobilize to USDA reservoir pump station.

b) Electrical - De-energize, disconnect, and remove all the existing controls.

c) Remove roof to be able to pull pumps.

d) Pumps- Disconnect and remove all (3) pumps.

e) Remove the existing corroded pump deck, pump discharge manifold, and replace with new.

f) Refurbish all pumps checking impellers, shafts, bearings and bushings and replace as needed.

g) Install new epoxy coated / coal tarred on under side pump / manifold base and manifold.

h) Re-install all plumbing and valves.

i) Re-install all the electrical controls in place and operational.

j) Reinstall all (3) pumps and electric motors in place and operational.

k) Energize and test to operational status acceptable to Lab personnel.

Electrical transformer/panel repairs The electrical boxes that house the transformers and breakers were damaged by hurricane Ian, with all the covers blowing off exposing breaker switches and wiring. The needed repairs are as follows:

Remove four (4) rusted well controllers in located in the field and used for filling the irrigation reservoir. The controllers have the contactors and circuitry to control a 15 Hp submersible well pump and be actuated by the Irrinet control system.

Provide and install four (4) new well controllers.

Test operation once installation is completed.

Remove thirteen (13) rusted transformer / panel combinations at each station.

Provide and install thirteen (13) new transformer / panel combinations meeting the same current. and voltage specified capacities as existing configuration.

Provide and install new mounting hardware.

Phase 2:

Reservoir cover removal The existing reservoir cover must be removed and disposed of. It must be separated from the berm surrounding the reservoir, and removed with no damage to the bottom liner that will remain in place. The material removed must be taken offsite and disposed of as part of the removal process.

Reservoir cover The reservoir cover, damaged by hurricane Ian, and further damaged by hurricane Nichole will need replacement. The replacement cover shall be 80-mil PE floating cover geomembrane with cover ballast weight, ballast weight straps, fasteners, perforated perimeter biogas/air collection piping, perimeter pipe straps, 2 hatch openings, a minimum of one 4” gas discharge port with flange, Becker-Ring and associated equipment. The cover must be completely installed with only minimal lowering of the reservoir water level.

The level can be dropped 6’ to allow for installation for a limited amount of time so coordination with the site personnel is essential. The reservoir cover material must meet the following specifications:

SPECIFICATIONS

Material Thickness (min. avg.) Every roll 80.0 mils ASTM D5199 Material Thickness (min.) Every roll 72.0 mils ASTM D5199 Melt Index - 190/2.16 (max.) 1/Batch g/10 min 1.0 ASTM D1238 Sheet Density (8) Every 10 rolls g/cc ≥ 0.940 Carbon Black ASTM D792 Content: Every 2 rolls 2.0 - 3.0 % ASTM D4218 Carbon Black Dispersion ASTM D5596 Every 10 rolls Category Cat. 1 & Cat. 2 OIT -standard (avg.) ASTM D3895 1/Batch min 100 Tensile Properties (min. avg) (2) ASTM D6693 Every 2 rolls Strength at Yield ppi 176 Elongation at Yield 13 % Strength at Break 324 ppi Elongation at Break 700 % Tear Resistance (min. avg.) Every 5 rolls 56 lbf ASTM D1004 Puncture Resistance (min. avg.) Every 5 rolls 156 lbf ASTM D4833 Dimensional Stability Certified ± 2 Stress Crack % ASTM D1204 Resistance (SP-NCTL) 1/Batch 500 hr ASTM D5397 Oven Aging - % retained after 90 days per formulation ASTM D5721 HP OIT (min. avg.) 80% ASTM D5885 UV Res. - % retained after 1600 hr per formulation ASTM D7238 HP-OIT (min. avg.) 50% ASTM D5885 Low Temperature Brittleness Certified - 106°F ASTM D746 SUPPLY SPECIFICATIONS (Roll dimensions may vary ±1%)

3) Site Visit:

Contractors are encouraged to visit the site and be escorted by a government representative to confirm locations, dimensions, and conditions of the project before a bid is submitted. The site visit shall be for observing firsthand any conditions relevant to the completion of this project. No consideration will be given to claims based on lack of knowledge of existing conditions and systems or based on lack of knowledge of exact requirements necessary to interface with existing systems, except where contract documents make definite provisions for adjustment in cost or extension due to existing conditions not readily foreseeable.

4) Safety The contractor is responsible for complying with all local, state and federal safety codes and laws.

5) Detailed Bid All quotes submitted by prospective contractors will have a detailed breakdown of each phase’s costs for the project. Each phase may be awarded independently and in different fiscal years depending on funding availability.

Provide all materials, labor, and equipment in order to fully and successfully complete the Statement of Work described in this document.

Contractor Responsibility:

The project has a base bid to be performed per the following specifications:

1. Contractor will verify all equipment, dimensions and existing site conditions covered in their report.

2. Contractor is required to manage the project and consult with the Government prior to beginning all work phases. And, to work in a manner that minimizes the impact of the work on Government operations, research, and functions.

3. All work must be performed in such a manner as to not adversely affect daily operations of the facility, its workers, and the onsite facility operations.

6) Material / Submittals:

All materials and components used in the project shall be submitted to the Farm Manager and EPM for review and approval by either of the two individuals prior to ordering and beginning construction. Cut sheets and drawings may be submitted electronically to the EPM and Farm Manager with the exception of any type of drawings and final red-lines which will be submitted electronically and in paper format.

7) Installation Procedure:

Contractor will verify all dimensions and site conditions prior to beginning work. Contractor will schedule the work between working hours as listed below. Contractor is required to provide labor, specified material, equipment, and other tools required to perform the job fully and completely. No Government equipment will be available for use by the contractor. The contractor shall be responsible for protecting his work at all times and ensuring the safety of his crew and ARS employees. Upon completion of the project, the contractor shall remove from the premises all accumulated materials and rubbish caused by the project.

Premises shall be left in a clean, orderly, and acceptable condition.

8) Project Schedule:

The completion of this project shall not exceed 365 days from date of notice to proceed. The contract award is the notice to proceed. A request for time extension must be submitted to the Contracting Specialist in writing. Each request must include specific and detailed reasons in support of the schedule alteration.

9) Work Hours Contractor work hours shall be Monday through Friday, seven (7) A.M. to four (4) P.M. except for Government holidays or as otherwise arranged with the site personnel in advance.

Photos: