Bessey_RevisedSectionJ2_03072024.docx

General Notes

1. A MANDATORY Pre-Bid Site Visit is required for the prime contractor for this project. It is highly recommended that potential subcontractors also attend. Proposals will NOT be accepted from any prime contractor not in attendance at the Pre-Bid Site Visit.

2. The Bessey Greenhouse Complex was constructed by a contractor that did not adhere to the plans and specifications. In addition, the contractor did not provide professional workmanship and meet industry standards on numerous items throughout the project. While every attempt has been made to reflect the issues that require resolution within this SOW, it is likely that additional items requiring repair will come to light as work progresses. The intent of this project is to rectify all identified issues with the previous construction and negotiate additional optional items to address newly identified work as appropriate.

3. Some of the items below are easily quantifiable and straightforward and are listed as Lump Sum items; however, some items have several unknowns and are therefore presented as Time and Materials Pay Items, shown in Table B-1. Base Pay Items 003, 004, 005, 007, 008, 011, 015, and 018 and Option Pay Items 016, 017, 018, 024, 026, 028, 030, and 033 are intended to provide the contractor with sufficient flexibility to assess the issue, develop a report that identifies what the problem is and the technical approach to resolve the issue and propose a lump sum price for the solution under the corresponding Option Pay Item shown in Table B-1. This lump sum proposal must include the following: technical approach (including rationale for proposed solution and other options considered), schedule, labor and equipment cost breakdown, and lump sum fee. It is the intent of the contract to award these Lump Sum optional items through negotiation with the successful offeror after completion of the evaluative phase.

4. The original specification Section 013300 Submittal Procedures required the use of Submittal Exchange to submit and track submittals. This is NO LONGER REQUIRED for this project. The contractor may provide submittals via email to the US Forest Service and is NOT required to use a submittal website/program. Please note that all submittals must be emailed to the US Forest Service (scanned files, photos, etc.) and paper submittals handed to the US Forest Service or mailed to the US Forest Service will not be accepted.

5. Many of the items listed in this SOW request that the contractor propose a solution. In all cases, provide a solution that conforms to the original contract documents, applicable modifications and amendments, and accepted submittals and shop drawings, unless otherwise noted below or in your proposal and accepted by the Government through award of the contract.

6. The descriptions and photos below are intended to provide direction, outline, and orientation to each condition needing completion or correction. Please note that other contract documents including but not limited to the original contract drawings and specifications; previous contract submittals, shop drawings, modifications, and amendments; supplemental drawings or directions provided in this solicitation by the Government, etc. may also bear on each item’s requirements for completion and correction.

· All new work shall comply with the most current applicable standards, regardless of those used in the original design noted on original drawing Sheet A0.1. Do not treat work in this contract as repair under the IEBC.

· Contractor bids shall include all work, material, and equipment to complete the work described in this contract and provide complete and fully operational systems.

7. A private utility locate survey will be provided by the USFS. Contractor still assumes responsibilities for locating all utilities on-site prior to any excavation and repair any damage done to any buried utilities (even if the utilities were not shown on the private utility locate survey provided by the USFS).

Base 001, Replace Headhouse Sewer Line – LUMP SUM ITEM The original design for the sewer line was to route the floor drains into the bathroom and then exit the sewer line out of the bathroom and direct sewage into the existing manhole as shown in Figure 1 and in original drawings U1.1 and P1.1.

Figure 1: Original Design of Floor Drains and Sewage Flow (Note: This was NOT constructed as designed) The contractor changed the original design without approval and routed the floor drains and sewage as shown in Figure 2 and shown in Photographs 1, 2, and 3.

Figure 2: As-Built Routing of Floor Drains and Sewage Flow

Photographs 1, 2, and 3: As-Built Routing of Floor Drains and Sewage Flow In addition to the incorrect routing that was installed, the sewer line within the headhouse does not have adequate slope at some locations between the bathroom fixtures and the exterior manhole. At points both inside and outside, the line is fully surcharged with sewage that doesn’t drain. Organic matter becomes lodged at low points and causes backup of the line. The sewer line also has two sharp 90 degree bends at the headhouse foundation footer to go beneath the footer, making it not possible to snake or cleanout the line. In addition to the problems within the headhouse, the exterior line connecting the headhouse into the manhole has several low spots and needs to be replaced.

To correct this issue, the US Forest Service would like to conceptually do the following as shown in Figure 3:

1. Flush and abandon the existing lines in place (shown in blue).

2. Install new lines (shown in orange) to a) direct water from the western most floor drain to flow north directly out of the building without turns; and b) exit sewage directly out the north side of the building without turns as originally designed.

3. Remove the poorly installed pipe and install a new exterior line (shown in green) to connect both new orange lines into the existing manhole.

Figure 3: Conceptual design to correct floor drain and sewage flow issue.

Correction of this condition will require saw cutting of the headhouse slab, replacement of lines including all connections and appurtenances, terminating the new line into the manhole at an acceptable height, and repairing all work demolished to access the line including slab floor, sidewalk, gravel surfaced area, etc. Also note that in the vicinity of the headhouse exterior wall where the sewer line leaves the building, the potable and non-potable water also come in. Care must be taken to preserve and protect these lines and their operation during work. Where the new sewer line crosses the potable water line, the line must be double sleeved as required by applicable county regulations.

Provide continuous 2% (1/4” on 12”) slope for all newly installed sewer line. This is a steeper slope than required for 4” pipe in IPC Table 704.1 but is desired to provide additional assurance of proper performance. Provide pipe material as specified in original contract specifications. At the foundation footer wall, continue to provide constant slope and sleeve the line through the footer; do not re-create the dive down condition currently present at the foundation wall. Use means to detect reinforcing prior to coring and do not cut footer steel reinforcement with the core. Provide adequate frost cover beneath the soil surface once the line is outside the building line. The lateral location of the sewer line as it leaves the building may be adjusted several feet should the contractor find that this reduces conflicts with other utilities at the north wall as approved by the CO.

At the north headhouse exterior wall, spalling of the concrete sidewalk surface is occurring. While replacing the sidewalk section required for access to this sewer line, also replace all sections with spalling (estimated to be approximately 30 Square Feet). Demolish sidewalk sections at existing control joints. Be advised, additional exterior utilities must be crossed to complete this installation. In addition to utilities shown in the original contract drawings, note that additional utilities may include: the generator propane supply line (see J-6), the telephone bundle, and other utilities described in the waterline replacement narrative or noted on the supplemental drawings.

Reinstall the head house floor slab with concrete matching the requirements set by the original contract. Provide soil compaction to 97% standard proctor, this is a slightly more stringent requirement than the original 95% requirement for floor slabs in the geotechnical report and is intended to avoid settlement of the patch. The geotechnical report allowed undisturbed natural soil or compacted structural fill. For the purposes of this line and given the disturbance of reinstalling it, assume structural fill will need to be imported and used. Provide nuclear density testing at a rate of 3 tests per lift over the sewer line distance from bathroom to manhole. Splice in replacement rebar in line with existing slab reinforcement in both directions. Match existing or spacing noted on Sheet S1.2, #4 bar @ 18” each way, whichever is more stringent. Use epoxy coated rebar for patching and embed 8” into existing slab, lapping rebar at opposite sides of the trench by 24” or the full width of the cut, whichever is shorter. Set rebar into the 8” embed with concrete epoxy. Set repair rebar at mid depth, not less than 3” from slab bottom. See Detail 2, Sheet S5.1 for lap example and ACI 546R-14, Guide to Concrete Repair, 5.4.2.1 for additional guidance.

This item is intended to be addressed in detail in the contractor’s technical proposal. Bidders must propose and describe in detail how their approach will best meet standards and resolve this issue.

Base 002, Replace Inverted Polycarbonate Greenhouse Panels – LUMP SUM ITEM 8 sheets of polycarbonate were installed upside down, which leads to premature damage and yellowing of the panel caused by UV exposure. The correct side of the panel has UV protective coatings on it. The incorrectly installed panels are at the ridges of the greenhouses and measure approximately 4’ x 6’. Incorrectly installed panels are as follows:

· Greenhouse 9 has 4 sheets on the ridge vent;

· Greenhouse 10 has 1 sheet on the ridge vent;

· Greenhouse 11 has 2 sheets on the ridge vent; and,

· Greenhouse 12 has 1 sheet on the ridge vent along with 1 on the south wall top and 2 on the south wall vent (for a total of 4 on Greenhouse 12).

Photographs 4 and 5 provide an example of these issues:

Photographs 4 and 5: Examples of incorrectly installed panels on greenhouses.

All work must be completed from the exterior at any time of the year if the temperature is not too cold for the crop or could damage other polycarbonate. Access to the ridges is limited by crops in the greenhouse and by a section of electrical conduit placed directly below the ridges (see Option Item 003). Assume that 50% of the aluminum trim will require replacement for these panels due to the inverted installation and the difficulty in accessing the locations. The contractor should NOT assume Option Item 003 will be awarded when pricing this work as a Base item. Greenhouse crops are generally only removed from the greenhouses from November to January, see Section C schedule constraints for additional details.

Fully replace the damaged polycarbonate panels with like material conforming to the original contract documents. Install according to the contract documents and manufacturer’s instructions.

Base 003, Evaluate and Propose Repair for Water Infiltration at Freezer Smoke Vents – TIME AND MATERIALS ITEM FOLLOWED BY LUMP SUM PROPOSAL The workmanship of the original contract was poor. To this end, water infiltration is apparent at the freezer smoke vents and surrounding area. It is unknown if this is due to condensation, roof leaks, or both. Water ponding on the freezer ceiling is apparent in the attic space, and this water sometimes migrates to the nearest vertical joint in the freezer structure and forms icicles on the freezer interior. Icicles at the smoke vents themselves several feet in length also form. Ice and water formation on the freezer floor slab is apparent.

Termination and flashing for the freezer smoke vents was not included in either the architectural drawings or the manufacturer shop drawings. Delamination and failure of caulked seams is also apparent when viewed from the roof with the vents open. The corners of the smoke vent insulated metal panels are not mitered and appear to be only sealed with use of sprayed foam sealant. The two installed smoke vents are Bilco Type DSH Class 90 automatically operated roof vents.

While a separate line item in this contract, Base 018, installs passive ventilation for the freezer attic space, do not assume that this change will resolve the freezer water issues.

It is unknown specifically how the smoke vents and roof system can be repaired or reconstructed; therefore, the contractor is requested to look at this area during the mandatory pre-bid site visit and provide rates for appropriate individuals to further assess and evaluate this issue. Efforts to assess and evaluate the issue shall be billed on a time and materials basis in Base Item 003. Upon completion of the assessment, the contractor shall provide a report that documents the cause of the issue/problem and identifies the technical approach to fixing the problem identified along with a lump sum proposal (Option Item 005) to repair or reconstruct the smoke vents and roof system to prevent all future water infiltration, ponding, and leakage. The repair or reconstruction must provide adequate thermal separation (R-31 minimum) for all locations in the system and provide a system that does not allow vapor intrusion and condensation. The repair or reconstruction must also provide adequate flashing and sealing throughout, that does not rely on the caulking alone to prevent water or vapor intrusion. If work is proposed to the roofing system, the warranty must be maintained or re-issued for the same term.

Photographs 6, 7, 8, and 9 provide examples of the issue:

Photographs 6, 7, 8, and 9: Examples of water infiltration at freezer smoke vents and ice and water formation on freezer floor slab.

Base 004, Evaluate and Propose Repair for Freezer Refrigerant Leak Detectors – TIME AND MATERIALS ITEM FOLLOWED BY LUMP SUM PROPOSAL Since installation, the refrigerant gas detection monitor has not operated correctly. Both sensors signal as malfunctioning and at times the alarm will signal randomly. It is unknown specifically how the freezer refrigerant leak detectors can be repaired; therefore, the contractor is requested to look at this area during the mandatory pre-bid site visit and provide rates for appropriate individuals to further assess and evaluate this issue. Efforts to assess and evaluate the issue shall be billed on a time and materials basis in Base Item 004. Upon completion of the assessment, the contractor shall provide a report that documents the cause of the issue/problem and identifies the technical approach to fixing the problem identified along with a lump sum proposal (Option Item 006) to correct the freezer refrigerant leak detectors to an operational condition free of faults. Based on the lump sum proposal cost, the Government may choose to simply disconnect the leak detectors instead of repairing them based on budgetary restrictions. Photographs 10 and 11 provide images of the Freezer Refrigerant Leak Detector control panel for reference.

Photographs 10 and 11: Freezer Refrigerant Leak Detectors Control Panel.

Base 005, Evaluate and Propose Repair for Freezer Ceiling Edge Insulated Metal Panel Connections and Remove Condensation – TIME AND MATERIALS ITEM FOLLOWED BY LUMP SUM PROPOSAL The connections where the freezer ceiling insulated metal panels meet the freezer vertical wall insulated metal panels is not constructed correctly and water intrusion is apparent. It is unknown if the water infiltration is caused by condensation or liquid water. Icing is apparent at the interior wall corners on the inside of the freezer. Exhaust fans and vents may be needed to remove condensation.

See sheet D3 of the insulated metal panel shop drawings, among other references in the original contract and submittals which apply. Flute plug material on the corrugated panels is absent. Butyl sealant on the exterior side of the joint was not observed on site. Flashing sealant tape and corner trim were failed in many or all locations. Corner trim piece may be incorrect with rolled edges on the wrong side of the angle (see shop drawing note calling for piece F5140).

It is unknown specifically how to best repair the freezer ceiling edge insulated metal panel connections and remove condensation; therefore, the contractor is requested to look at this area during the mandatory pre-bid site visit and provide rates for appropriate individuals to further assess and evaluate this issue. Efforts to assess and evaluate the issue shall be billed on a time and materials basis in Base Item 005. Upon completion of the assessment, the contractor shall provide a report that documents the cause of the issue/problem and identifies the technical approach to fixing the problem identified along with a lump sum proposal (Option Item 007) to correct and re-construct the panel connections to comply with manufacturer’s instructions and details provided in the drawings, shop drawings, and submittals. In addition, the proposal will include constructing a water, vapor, and heat proof transition at all points of connection for the freezer ceiling. The addition of exhaust fans and vents may also need to be included in the lump sum based on the results of the contractor’s assessment. Photograph 12 provides an example of the metal panel connections.

Photograph 12: Example of metal panel connection.

Base 006, Repair Headhouse & Freezer Gutters – LUMP SUM ITEM The headhouse and freezer gutters leak at various points. It is not known whether they hold water at points. Previous corrective work was undertaken by the original contractor, but leaks remain. Replace ALL sealants at the gutter joints on the headhouse and freezer and provide positive drainage to downspouts to ensure there are no leaks at gutters or downspouts. Provide flood testing of the system after correction to demonstrate a lack of leaks. Contractors should take note of low areas during the mandatory Pre-Bid site visit. Photograph 13 provides an example of a leaking poor joint connection.

Photograph 13: Example of metal panel connection.

Base 007, Evaluate and Propose Repair/Upgrade of Tripping Greenhouses 10 & 12 Ridge Vent Motor Circuits – TIME AND MATERIALS ITEM FOLLOWED BY LUMP SUM PROPOSAL The circuits feeding the ridge vent motors trip often at Greenhouses 10 & 12. It is unknown what the cause is. These are on a single pole 20-amp breaker. It is unknown specifically how to best repair the circuits; therefore, the contractor is requested to look at this area during the mandatory pre-bid site visit and provide rates for appropriate individuals to further assess and evaluate this issue. Efforts to assess and evaluate the issue shall be billed on a time and materials basis in Base Item 007. Upon completion of the assessment, the contractor shall provide a report that documents the cause of the issue/problem and identifies the technical approach to fixing the problem identified along with a lump sum proposal (Option Item 008) to correct the system, motor, circuit, and/or electrical panel condition so that these breakers do not routinely trip during use. Please note that this work CANNOT be done or tested until the ridge vents have been repaired. If the vents on Greenhouses 10, 11, and 12 are opened they will not close again without help from the inside and adjustment of rack and pinion systems.

Base 008, Evaluate and Propose Adjustment/Correction/Repair/Replacement of all Greenhouse Ridge and Side Vent Systems – TIME AND MATERIALS ITEM FOLLOWED BY LUMP SUM PROPOSAL Each of the four greenhouses features a ridge vent on the north side of the ridge peak that opens and closes. Each greenhouse also features a side vent either on the north or south side, and end walls. These ridge and side vents run the length of the greenhouses and are operated by motors and rack-and-pinion systems.

None of the ridge vents can be run without some possible damage or risk of the drive piping coming apart. Some ridge vents are operational, while others are not due to poor installation and subsequent binding and/or failure of the drive system. Some ridge vents have failed seals and/or inadequate sealing.

All side vents function well and do not require work except for Greenhouse 12. The drive pipe on the south vent of Greenhouse 12 does not function well and likely needs to be replaced.

It is unknown specifically how to best address the ridge vents on all of the greenhouses and the side vent on greenhouse; therefore, the contractor is requested to look at this area during the mandatory pre-bid site visit and provide rates for appropriate individuals to further assess and evaluate this issue. Efforts to assess and evaluate the issue shall be billed on a time and materials basis in Base Item 008. Upon completion of the assessment, the contractor shall provide a report that documents the cause of the issue/problem and identifies the technical approach to fixing the problem identified along with (Option Item 009) to repair, correct, and make fully and reliably operational all greenhouse vent systems. There will be enough access in the summer growing season to evaluate the ridge vents, but repairs will be limited by the crop in the greenhouse taking up floor space and will be subject to the timing constraints noted in this contract. Where system components are damaged due to operation while incorrectly installed, it is likely that replacement will be required with new manufacturer-provided material rather than repair. In addition, all vent sealing surfaces will need to be corrected to provide a weatherproof and air transmission barrier seal. Modifications to the vent seal bearing surfaces may need to be made as gaps and lack of bearing surface currently exist. In addition to provisions in the original contractor specifications, as a condition of acceptance for this item, each vent system must be shown to operate open-and-closed, reliably, for 50 cycles. Also, in addition to the general warranty provided for in this contract, the lump sum proposal must include providing specific parts and labor warranty for all vent systems for 1 year from acceptance. The contractor shall warranty that the systems will operate reliably throughout the warranty period and provide 7 calendar day or less resolution, at no cost to the Government, should issues arise.

In addition to the knowledge that will be gained in the time and materials assessment to be performed by the contractor, the following provides additional observations, findings, and recommendations regarding the ridge vents from the US Forest Service:

· For all greenhouse vent systems, the vent motor internal limit set points need to be checked and tightened for proper operation. For all vent systems, checking and tightening of the rack and pinion set screws and control rod connectors is required.

· At Greenhouses 11 & 12, the ridge vent aluminum where the bottom edge of the vent meets the house will need to be replaced due to the rack and pinion system ripping out of its mounting surface. The aluminum connection between the roof and vent is bent and damaged on greenhouses 11 & 12 and some (or all) requires replacement. This applies to the full east-west run for both houses. At greenhouses 9 & 10, this bottom edge mounting point aluminum is likely salvageable, but the contractor should make their own assessment. A portion of the drive pipe will also likely need to be replaced as it is bent.

· The ridge vent in greenhouse 9 is not in line and needs to be adjusted and shall be evaluated for other damage and items needing replacement.

· The ridge vent in greenhouse 10 is not working correctly, it opens on the east side and not the west side.

· The ridge vent in greenhouse 11 is coming apart.

· The ridge vents on greenhouse 12 do not close all the way along the west portion of the run. The ridge vent on the east side is bent. The drive piping is twisted and bent and will need to be replaced.

· Sealing issues exist both at the ridge vents and side vents.

· Previously, issues with tightness and alignment of the vent systems have propagated with continued operation.

Photographs 14, 15, 16, and 17 provide examples of the ridge and side vent issues:

Photographs 14-17: Examples of ridge and side vent concerns.

Base 009, Complete Headhouse Door Threshold Installation – LUMP SUM ITEM Several of the door thresholds at the headhouse and freezer are missing screws in their threshold plate. It is possible that some screws sheared off during original installation. Correct this condition so that each threshold has a full 8 correctly installed screws. The total count of screws in this condition is less than 10. Photograph 18 provides an example of the issue.

Photograph 18: Example of missing screws at thresholds.

Base 010, Repair/Correct Greenhouse West Endwall Structural Connections at Truss Top Chords – LUMP SUM ITEM Each greenhouse endwall has four vertical column connections to the top chord of the roof truss. On the west endwalls, deformation was evident several times during construction. Although a fix was proposed and completed by the previous contractor, in consultation with the greenhouse manufacturer, the deformation is again evident at the connections and top of the wall.

Repair these connections and correct this condition at all 16 west endwall connection points. Consult with the manufacturer and replace the existing connectors with the most recently available connection hardware for this model. Install according to manufacturer’s instructions. In addition, the owner’s structural engineer recommended an additional plate be placed on the open bottom of the top chord truss member. Place a galvanized steel plate according to the Government’s structural consultant’s recommendations, including 16ga plates extending 3’ on each side of the column connection point with screws at 12” spacing. Reference the previous notice of non-compliance correspondence and structural report for additional information regarding this issue. Note: Any work that is done now may damage the shade system. The contractor must adjust the shade system at the time the ends are fixed with proper tension and limits. Photograph 19 provides an example of the issue.

Photograph 19: Example of greenhouse west endwall structural connections at truss top chords

Base 011, Evaluate and Propose Replacement of Failing Louver Motors at All Greenhouse West Endwall Intake Louvers – TIME AND MATERIALS ITEM FOLLOWED BY LUMP SUM PROPOSAL Each greenhouse endwall has two large air intake louvers mounted. These louvers are controlled by actuators. During windy conditions, the actuators are too weak to hold the louvers in position, either open or closed. Fluttering of the louvers occurs when open in windy conditions. Several actuators were previously replaced by the previous contractor due to failure. Adjustment may be needed on the springs and chain system that integrate with the louver controller.

The greenhouse louvers are Coolair model LRW66E and ship with a louver manufacturer specified motor. Installation on site does not conform with the Coolair installation instructions found in their product literature.

The manufacturer of the installed motors reports that based on their markings they are a 1520-BX model. They provided the salient characteristics of the installed motors, which are inadequate to hold the louvers against wind: LOADED SPEED @ 20 IN-LB: 2.8 RPM, LOADED CURRENT @ 20 IN-LB: 0.08 A, STALL TORQUE: 50 IN-LB.

It is unknown specifically what motors to use to replace the failing lover motors; therefore, the contractor is requested to look at this area during the mandatory pre-bid site visit and provide rates for appropriate individuals to further assess and evaluate this issue. Efforts to assess and evaluate the issue shall be billed on a time and materials basis in Base Item 011. Upon completion of the assessment, the contractor shall provide a report that documents the cause of the issue/problem and identifies the technical approach to fixing the problem identified along with a lump sum proposal (Option Item 010) to replace all eight louver motors on site, install each correctly, and adjust according to manufacturer’s installation instructions. The proposed replacement motors must meet the manufacturer’s recommendation and will likely be a larger motor or other mechanism for application than the ones currently installed. Note that the structural ultimate wind speed is 115 mph, and these louvers are on the windward side of the building. Photograph 20 provides an example of the condition.

Photograph 20: Example of failing louver motor at greenhouse west endwall intake louver

Base 012, Rekey & Coordinate Keying for Headhouse, Freezer, and Greenhouse Doors – ACTUAL QUANTITY ITEM (ESTIMATED AT 11 DOORS AND PAID BY EACH) The previous contractor did not provide any of the keys for the project door hardware. Observed brands on-site include Yale and Sargent. Rekey all doors on the project to a common core and key. Match door keying to the Forest Service Yale Key system. Review hardware installed on site before bidding this line item. Keying shall match Yale # FL 26525 key.

Base 013, Adjust Exterior Water Supply Valving Stem Heights & Provide Concrete Collars – LUMP SUM ITEM Adjust the height of two waterline valve stems located to the north of the headhouse to grade and provide concrete collars for each for protection. The nursery will re-grade this area to remove excess soil in support of regular truck traffic pulling in toward the south and backing across the access road before contractor mobilization. However, valve stems should be assumed to not be at grade after this work. Provide valve stem concrete collars of 24” diameter and minimum 4” thick with concrete surface at grade. The proposed final grade elevation for each water supply valve stem will be surveyed by the contractor and submitted to the Contracting Officer prior to shortening the valve stem and prior to installation of the concrete collar. Once the Contracting Officer approves the proposed elevation, the height of the valve stems can be adjusted, and concrete collars can be installed for protection. Photograph 21 provides an example of the issue.

Photograph 21: Example of elevated exterior water supply valving stem.

Base 014, Correct Headhouse Vertical Corner Joint Construction – LUMP SUM ITEM The headhouse is slightly wider than the freezer at their shared wall, so that west corners of the freezer are caught in the headhouse east wall. The freezer wall corner joints that are exposed to the interior of the headhouse are not constructed to detail and lack fasteners along the upper portion. Detail 3 of Sheet D1 of the insulated metal wall panel shop drawings shows the correct installation, which includes a row of self-tapping sheet metal screws at 12” OC and sealant tape.

Correct construction of the freezer corner joints to match the shop drawings, manufacturer instructions, and any other related instructions in the contract. Where obstacles to fastener placement occur, placement may exceed 12” OC so that additional removal work need not occur. Provide an additional screw at either side of the obstacle. Photograph 22 provides an example of the condition.

Photograph 22: Example of headhouse vertical corner joint construction issue.

Base 015, Evaluate and Propose Correction of Connection & Programing of Fire Alarm Autodialer – TIME AND MATERIALS ITEM FOLLOWED BY LUMP SUM PROPOSAL The headhouse and freezer are monitored by a Honeywell IFP-75 fire alarm control panel. The panel is not connected to a phone line, though a phone line is in place in the autodialer box. It is unknown why the panel is not connected to the phone line or if there is an issue that prevents the connection from being made; therefore, the contractor is requested to look at this area during the mandatory pre-bid site visit and provide rates for appropriate individuals to further assess and evaluate this issue. Efforts to assess and evaluate the issue shall be billed on a time and materials basis in Base Item 015. Upon completion of the assessment, the contractor shall provide a report that documents the cause of the issue/problem and identifies the technical approach to fixing the problem identified along with a lump sum proposal (Option Item 011) to correct the connection and install all connections and programming necessary to make the autodialer (aka digital alarm communicator/ transmitter) functional. Photograph 23 shows the fire alarm control panel box.

Photograph 23: Fire alarm control panel box.

Base 016, Complete Installation of Dry Type Transformer Weather Shields – LUMP SUM ITEM Transformer T2 is a dry type of transformer mounted outside on concrete. It does not have required weather shields installed to make the enclosure NEMA 3R rated and is currently only NEMA 1 rated. The enclosure is noted as a Schneider Electric 25J. It appears a drip edge accessory was installed, but not the weather shields. Install accessories 7400WS25J on both top and bottom transformer vents and any other required accessories to make the enclosure NEMA 3R rated or better. Photographs 24 and 25 provide further detail.

Photographs 24 and 25: Current transformer.

Base 017, NOT USED Photograph 26: Not used Base 018, Evaluate and Propose Freezer Attic Ventilation Correction – TIME AND MATERIALS ITEM FOLLOWED BY LUMP SUM PROPOSAL The attic space of the freezer building is currently not ventilated. Per IBC 1202.2, a free ventilating area of 1/150 is required given that the attic is outside the thermal envelope. Given the freezer floorspace, this equates to 35 square feet of net free ventilating area.

There are many unknowns regarding the best approach to take to address this issue; therefore, the contractor is requested to look at this area during the mandatory pre-bid site visit and provide rates for appropriate individuals to further assess and evaluate this issue. Efforts to assess and evaluate the issue shall be billed on a time and materials basis in Base Item 018. Upon completion of the assessment, the contractor shall provide a report that documents the cause of the issue/problem and identifies the technical approach to fixing the problem identified along with a lump sum proposal (Option Item 012) to do the following:

· Provide gable vents on both the east and west gable ends of the freezer, above the freezer ceiling elevation line. Due to the expected size of these openings, provide a minimum of two openings on each side of the freezer attic space (two openings east and two west, minimum). Net free ventilating area must account for lost area due to louvers or other features of the vents. Note: Eave and ridge vents are not acceptable due to the building’s construction and a desire to take advantage of site wind cross breeze to improve ventilation.

· Comply with all requirements of IBC 1202.2, including protection against the entrance of rain and snow, blocking location, and protection against entry of animals.

· Propose vent product and detailing, or provide shop drawings, for an approach that integrates successfully with the existing building construction. Provide positive drainage via integrated, prefinished metal flashing system. Color match existing features to the extent possible and submit proposed colors for approval. Vents and flashings shall be factory finished.

· It is expected that vents will need to integrate with the metal skirt detailed at Keynote 2 on original drawing Sheet A3.3, Keynote 4 on Sheet A3.2, and the corresponding skirt on the east side at gridline J on Sheet A3.1. Propose and install a solution that complies with the NRCA Roofing Manual, 2022. Provide vent selection, detailing, and minimum distance from the headhouse roof surface that accounts for and prevents moisture entry including drifting snow.

· Note that the vertical insulated metal panel detailed by Keynote 6 on Sheet A3.3 does not extend to the freezer roof deck and instead terminates approximately 4” above the freezer ceiling.

· Note that with the freezer roof I-beam placement at the east and west rooflines, there is little vertical space between the I-beam and freezer ceiling line.

· The proposed installation must comply with the IBC and be detailed to withstand all foreseeable loads, including wind loads and drifting snow.

· On the west elevation, the entirety of the metal skirting needs to be re-fastened and/or replaced. The proposal must provide a weatherproof access hatch or door with secure closure to provide future access to the attic space.

Photographs 27 and 28 provide an example of the condition.

Photographs 27 and 28: Examples of freezer attic ventilation issues.

Base 019, Headhouse to Freezer Insulation & Connection Voids – LUMP SUM ITEM The connection of the headhouse to the freezer vertical wall is incomplete and includes many gaps and voids. This results in conditioned air from the headhouse escaping into the unconditioned freezer attic space and an incomplete thermal envelope.

When looking from the attic space above, or from below with the lights turned off, light can be seen at the gap along gridline E as shown in original contract drawing Sheet A3.1. Additionally, at structural steel connections in the northwest and southwest corners voids in the connection are larger.

Propose and install a continuous air barrier and insulation system which completes the thermal envelope for the headhouse at its roofline at the east elevation. The system must have a minimum R-31 rating. The air barrier and insulation system shall comply with the 2021 IECC, with the exception of the R-31 rating above, which shall govern. Wood products are not acceptable for use in this system. Install the system according to applicable codes and manufacturer’s instructions. Photographs 29 and 30 provide an example of the condition.

This item is intended to be addressed in detail in the contractor’s technical proposal. Bidders must propose and describe in detail how their approach will best meet standards and resolve this issue.

Photographs 29 and 30: Examples of connection voids.

Option 001, Replace & Bury Electrical Line to Cistern – LUMP SUM ITEM From the pumphouse, an electrical control line runs approximately 475 feet to the south to the cistern on the hill above. These wires signal the water level in the cistern and in turn control the well pump. This line is currently on the surface and subject to damage, including from fire. Replace the electrical run from the splice box near the existing pumphouse to the cistern float control box. Replace the three existing wires with three new #12, THHN wires or match existing if larger or different insulation type. Install according to NEC 70 and NECA 1. Place new wires in 1” schedule 40 PVC buried at an 18” depth. Place locatable red warning tape 6” above the line within the trench. Locate the trench so that it is not subject to future erosion or uncovering by the wind. Note that this line placement will encounter utility crossings near the pumphouse. Make all necessary connections for system operation, including at the splice box and cistern float control box. Do not re-use existing conduit or conductors.

For all above-ground conduit at the cistern float controls, replace with 2-hour fire rated conduit and comply with NEC 70. Photographs 31 and 32 provide an example of the condition.

Photographs 31 and 32: Examples of above ground electrical line.

Option 002, Provide Separate Convenience Outlet Circuit for Headhouse & Freezer – LUMP SUM ITEM At the headhouse and freezer, duplex outlets in both are combined onto a single circuit, B3. The owner reports tripping of this breaker when office uses and exterior or freezer uses are combined (e.g. a coffee pot in the headhouse and a power tool on a freezer outlet).

Install a new dedicated circuit for the headhouse outlets shown on circuit B3 into panel B. Match existing materials (e.g. EMT) and comply with NEC 70 and NECA 1. If needed, re-route conduit and conductors for remaining circuit B3 loads.

Details may be found on Sheet E1.1 of the original drawing set between gridlines D and F.

Option 003, Relocate Electrical Conduit in Greenhouses – LUMP SUM ITEM An electrical conduit run was placed by the previous contractor directly below each greenhouse ridge in all four greenhouses. This conduit limits access by maintenance and contractor personnel to the greenhouse ridges, including the ridge vent system.

Relocate the east-west electrical run in each greenhouse to a nearby truss connection point so that is does not interfere with access to the ridge, nor any other installed system. Conduit and wire may, at the option of the contractor, be re-used as long as the final installation is complete, complies with NEC 70 and NECA 1, and uses like materials. Assure all connectors are galvanized and if the existing installation is for wet locations extend this requirement to the entire new run. Photograph 33 provides an example of this condition.

Photograph 33: Example of electrical conduit in greenhouses.

Option 004, Inspect/Correct Electrical Installations – LUMP SUM ITEM A qualified electrician shall inspect all electrical panels, switchgear, disconnects, ATS, surge protection devices, conductors, and other equipment described on the one-line diagram, and conduit and conductors where they meet panels or wireways for conformance with NEC 70 (2014), NECA 1, and manufacturer’s instructions and ratings. Confirm panel labeling is accurate and post a durable panel schedule in each panel.

Inspect electrical connection for generator. When Hall Electric connected the generator, the wiring was incorrect and would not operate properly. There is a discrepancy between 3 phase wiring and single-phase wiring that needs to be confirmed.

Specifically excluded from this effort are branch circuits and their associated conductors and conduit after leaving the panel all the way to the load.

Make recommendations for non-conforming work in a written report, including photos and requirement citations.

Correction of deficient work, if found, is contemplated within this contract. For the purposes of bidding, assume all work within the previous contract is compliant with the standards above. If non-compliant work is discovered, its correction shall be considered within the general scope of this contract for the purposes of FAR Part 43. If non-compliant work is discovered, a proposal for a lump sum fee to correct the issue will be requested.

Option 005, Repair Water Infiltration at Freezer Smoke Vents – LUMP SUM ITEM – PRICE TO BE PROVIDED AFTER COMPLETION OF BASE ITEM 003 Lump sum proposal to address items identified in Base item 003.

Option 006, Repair for Freezer Refrigerant Leak Detectors – LUMP SUM ITEM – PRICE TO BE PROVIDED AFTER COMPLETION OF BASE ITEM 004 Lump sum proposal to address items identified in Base item 004.

Option 007, Repair for Freezer Ceiling Edge Insulated Metal Panel Connections and Remove Condensation – LUMP SUM ITEM – PRICE TO BE PROVIDED AFTER COMPLETION OF BASE ITEM 005 Lump sum proposal to address items identified in Base item 005.

Option 008, Repair/Upgrade of Tripping Greenhouses 10 & 12 Ridge Vent Motor Circuits – LUMP SUM ITEM – PRICE TO BE PROVIDED AFTER COMPLETION OF BASE ITEM 007 Lump sum proposal to address items identified in Base item 007.

Option 009, Adjust/Correct/Repair/Replace All Greenhouse Ridge and Side Vent Systems – LUMP SUM ITEM – PRICE TO BE PROVIDED AFTER COMPLETION OF BASE ITEM 008 Lump sum proposal to address items identified in Base item 008.

Option 010, Replace Failing Louver Motors at All Greenhouse West Endwall Intake Louvers – LUMP SUM ITEM – PRICE TO BE PROVIDED AFTER COMPLETION OF BASE ITEM 011 Lump sum proposal to address items identified in Base item 011.

Option 011, Correct Connection & Programming of Fire Alarm Autodialer – LUMP SUM ITEM – PRICE TO BE PROVIDED AFTER COMPLETION OF BASE ITEM 015 Lump sum proposal to address items identified in Base item 015.

Option 012, Freezer Attic Ventilation Correction – LUMP SUM ITEM – PRICE TO BE PROVIDED AFTER COMPLETION OF BASE ITEM 018 Lump sum proposal to address items identified in Base item 018.

Option 013, Replace Irrigation Lines – LUMP SUM ITEM The irrigation water main was not installed to the requirements in the technical specifications. Thrust blocks are inadequate and improper fittings were used at connections to the pump house, service taps, and valves. Pressure tests were carried out but did not meet the requirements of the specified tests.

Numerous repairs have been conducted on the irrigation system and it is believed that the system can now hold pressure and function as intended. In the event that the irrigation system presents additional leaks and/or no longer functions, this optional item will likely be exercised.

Install a new irrigation main from a new pump house to the head house service location as shown in the original contract including service for the shade house and greenhouses 3 through 7, isolation valves, and service for the head house. Install additional isolation valves as needed to maintain the existing water service and facilitate switching to the new water main. Be advised existing potable water, phone, sewer, electrical, and other utility lines must be crossed.

After the new irrigation service and pumphouse have been accepted by the CO and satisfactorily put into service, remove all valves on the existing main, disconnect the existing main from the pump house, and abandon the existing pipe in place. Salvage valves from the existing main and provide to Owner. Cap all service laterals and the headhouse connection for the abandoned existing main so that the system is not relying on isolation valves alone to prevent a system leak.

If this work is completed when a crop is in production, all work shall be done in a manner that avoids interruption of nursery operations and watering at the greenhouses. Any interruptions to the preceding shall require two days’ notice, approval by the CO, and shall be limited to 24 hours in duration unless otherwise approved. See the schedule narrative in Section C.

Before burying or covering work, complete successful hydrostatic testing of all installed waterlines and laterals according to AWWA C605 and the following:

· System working pressure shall be 75 psi. Hydrostatic test pressure shall be 110 psi.

· Visible leaks at joints, valves, and fittings shall be repaired and testing shall be restarted.

Restore all improvements and surfaces impacted by waterline, lateral, and valving placement to their original condition. This includes a section of concrete pavement just to the north of the existing greenhouses.

This item is intended to be addressed in detail in the contractor’s technical proposal. Bidders must propose and describe in detail how their approach will best meet standards and resolve this issue.

Option 014 Replace Pumphouse – LUMP SUM ITEM The pump house was not installed to the requirements of the technical specifications. Piping under the floor was installed with improper fittings, inadequate thrust blocks, and inadequate compaction; it also does not have a foundation footer to account for frost heave.

The pump house will be stabilized with push piers in March 2024. It is anticipated that this will solve the issue of the faulty installation; however, in the event that this does not solve the issue, this optional item will likely be exercised.

For all work, including but not limited to new valving not described in the original drawings, backfill after final capping, etc., comply with the original specifications and supplemental direction laid out in this solicitation.

Construct a new pump house as shown in J-6, New Pumphouse & Waterline Drawings. Install all piping, equipment, fixtures, and electrical service as shown in the original contract documents with the following exceptions:

1. Well pump control panel shown on Irrigation System Improvements drawing E1.2 shall be new and equal to the existing control panel and as approved by the CO.

2. Reduced pressure zone backflow preventer shown on drawing P1.1 shall be replaced with a 4” double check valve as specified below:

a. Iron swing check valve, Class 125, metal seats with flange end connections.

Connect to the new irrigation main and existing storage tank supply line with isolation valves as needed to maintain proper operation of the existing irrigation system while the new system is installed and prepared for service. Perform operational checks, calibrations, adjustments and start up services as described in the original solicitation to make the new pumping system ready for operation.

After the new irrigation service and pumphouse have been accepted by the CO and satisfactorily put into service, disconnect and cap piping from the existing pump house to the well and tank supply line. Ensure all excavations have been filled and returned to natural grades and the site is clean.

If this work is completed when a crop is in production, all work shall be done in a manner that avoids interruption of nursery operations and watering at the greenhouses. Any interruptions to the preceding shall require two days’ notice, approval by the CO, and shall be limited to 24 hours in duration unless otherwise approved. See the schedule narrative in Section C.

Unless otherwise proposed or directed by the CO, the existing pump house and equipment shall remain in place.