B08_-_Atch_1_-_Statement_of_Work_-_JOTR_Greenhouse_6_18.pdf

Statement of Work JOTR Greenhouse Nursery & Fencing

Part 1: Scope/Background/Objective

1.1 Scope of Work

The contractor shall:

1. Procure and install a 24’x48’x10’ enclosed greenhouse with natural ventilation, propane heating, air-circulation fans, exhaust fans, evaporative cooling system, shade curtains, benches, and environmental controls. This will take place just outside the existing nursery footprint at Joshua Tree’s Headquarters at 74485 National Park Drive, Twentynine Palms, CA 92277. Existing vegetation will need to be removed first. Concrete will need to be poured at the 14 support posts and for a walking path down one side of the greenhouse. Gravel will be used to complete the floor outside of the concrete path.

2. Install electric and gas lines via trench to the to the greenhouse. Electric and gas lines shall be installed by qualified personnel.

3. Procure and install a chain-link fence matching the existing fence around the nursery’s new footprint. The new fence will measure approximately 223’ long and include a pedestrian gate and vehicle gate.

1.2 Background

Joshua Tree National Park has a native plant nursery capable of growing plants for in-house habitat restoration projects, as well as supplying plants to other agencies and local partners. There are currently two greenhouses that are nearing the end of their life. They have required structural and cooling wall repairs and are in an area inaccessible to vehicles, making repairs difficult. Additionally, the nursery has expanded its operations as of late and is growing more plants for in-house restoration as well as for local partners, to include other NPS units. The additional space will make this feasible long term and allow Joshua Tree to continue to be a leader in Mojave native plant production.

1.3 Objective

This contract will provide Joshua Tree with a new greenhouse in an area just outside of the current nursery footprint. This new greenhouse will be connected to an existing dirt road by a 19’ x 80’ spur road, constructed by the park, to the greenhouse. This additional space will expand the park’s capacity for producing native plants. Also, the new location and access road will be more easily accessible for loading/unloading plants into vehicles, maintenance, and for making repairs when necessary. The greenhouse specifications are based on a 24’x48’x10’ Agra-Tech “Solar Lights.” All greenhouses submitted in bidding must be equal to or better than the below specifications but is not required to be an Agra-Tech greenhouse. The contractor shall be required to install the greenhouse.

Part 2: Contractor Tasks & Supplies

2. General/structure specifications.

2.1 Overall size will be 24’ x 48’ x 10’.

2.2 Fourteen columns secured with concrete will support the greenhouse.

2.2.1 Pre-drilled galvanized steel columns.

2.2.2 Must stand up to extreme wind events.

2.2.3 All concrete foundations will be formed with a circular form (sonotube).

2.3 Gable style bolt together trusses with 6:12 pitch condensation control system.

2.4 Top chord galvanized break-formed steel with condensate gathering ‘V’ channel.

2.5 Webs and bottom chord galvanized structural grade steel.

2.6 Specialized break-formed "Z" design condensate gathering purlins.

2.7 Break formed gable girts and wall girts.

2.8 Pre-punched gutters 11” wide x 6” deep (2.2 gallons/linear foot capacity).

2.9 Steel tube bracing.

2.10 Includes aluminum ridge, glazing attachments, and gable trim extrusions.

2.11 8mm twin wall polycarbonate covering on the roof, side walls, end walls, and gables.

2.11.1 With anti-drip coating.

2.11.2 Class A/CC1 fire rating.

2.11.3 Includes limited warranty: 15 years against yellowing and 10 years against hail damage.

2.12 Three 4' x 34' free standing benches with expanded metal tops.

2.12.1 Bench top is to be expanded metal, ¾” mesh, hot dip galvanized after expansion.

2.12.2 Made of heavy-duty galvanized steel components.

2.12.3 With cross bars to support the bench top and prevent sagging.

2.13 Two hinged doors (4' W x 6’ 8” H).

2.13.1 Three 4-way universal swing steel hinges.

2.13.2 R12 insulation value with a weather tight seal.

2.13.3 Frame jamb, header, and sill to be white with baked polyester coating.

2.13.4 ADA compliant lever handle.

2.14 Includes base angle to terminate the walls to a 12" width concrete curb.

2.15 A concrete path will be poured on the side of the greenhouse opposite the cooling vent system.

2.15.1 24’ long and 4’ wide.

2.15.2 4” thick with a broomed finish.

2.16 Remaining floor, excluding path, to be gravel.

2.16.1 All ½” washed gravel.

2.16.2 To a depth of 4” over the 1,056 ft2 total area.

2.17 Stamped engineered drawings for structure & foundation.

3. Heating, cooling, and ventilation

3.1 One stainless steel, propane heat exchanger unit with mounts.

3.1.1 160,000 BTU.

3.1.2 Permanently lubricated motor for minimal maintenance.

3.1.3 Power vented exhaust.

3.1.4 Thermal efficiency of 82% or greater.

3.1.5 10-year manufacturer warranty.

3.2 Two 12" horizontal air flow fans.

3.2.1 Must fully circulate the air and maintain uniform temperatures throughout.

3.3 One 54” x 48' rack and pinion roof vent.

3.3.1 Made of heavy-duty arched steel racks with pinions 6’ on center with an extra rack at each vent end for added wind support.

3.3.2 Powered by a compact 115v, 1ph drive with internal primary safety limit switches.

3.3.3 With one 3/8” Dia. tubing shaft, fasteners, and closure stripping.

3.4 24’ x 48’ slope-flat-slope shade curtain system.

3.4.1 Operating truss-to-truss with push-pull steel rack & pinion drive.

3.4.2 Powered by a compact 115v, 1ph drive with internal primary safety limit switches.

3.4.3 Includes 47% shade and 46% energy, flame retardant, shade cloth.

3.4.4 Includes channels for leading edge, gathering clips, gutter seals, and mono support wires.

3.5 4' x 20' Cooling pad system (including mounts & pads).

3.5.1 Stainless steel metal components.

3.5.2 UV protected, watertight, PVC gutter.

3.5.3 Pads made from special formulate cellulose paper with soluble anti-rot salt.

3.6 Rack and pinion 4' x 20' cooling pad vent.

3.6.1 Made of heavy-duty steel racks with pinions 6’ on center.

3.6.2 Extra rack at each vent end for added wind support.

3.6.3 One 3/8” diameter tubing shaft, fasteners and closure stripping included.

3.6.4 Powered by a 115v, 1ph drive.

3.7 Two 30", 1hp, 115/230v, 3 phase, variable frequency drive compatible exhaust fans.

3.7.1 Protected from rust with a metal wash process and baked on finish.

3.7.2 Minimum 5-year warranty.

4. Controls

4.1 Environmental control system including an interface box.

4.1.1 Software for Windows, a compact PC with data storage

4.1.2 Wireless access for Windows 10 or smartphone.

4.1.3 Touchscreen monitor and/or a Bluetooth keyboard.

5. Fencing

5.1 Chain-link fence matching existing fence will be added to enclose the new nursery footprint.

5.1.1 Approximately 223’ of fencing, at least 68” tall to match the existing fencing.

5.1.2 Fence posts to be anchored with concrete, formed with a circular form (sonotube).

5.1.3 Includes pedestrian gate, at least 4’ wide.

5.1.4 Includes vehicle gate at spur road, at least 12’ wide to allow vehicle access.

6. Utilities

6.1 Electric will need to be trenched from the existing line in the nursery.

6.2 Gas will need to be trenched from the existing gas lines in the nursery.

6.3 Water will be brought to the greenhouses by connecting to the existing lines in the existing nursery.

Part 3:

3.1 Tribal Monitoring. A tribal monitor is required during shall be on-site full-time when trenching or excavation/ground disturbance is occurring. The contractor and Tribal monitor will comply with the Joshua Tree Inadvertent Archaeological Discovery and Monitoring Plan for the project. A daily log and field notes will be completed for each day of monitoring that documents daily observations and findings. At the end of the project a draft final monitoring report jointly prepared by the Tribal monitor/s and NPS-JOTR archaeological monitor will be submitted to the NPS-JOTR and consulting Tribes within 30 days of completion of the Project. Consulting Tribe(s) will have 30 business days to review. The NPS-JOTR will provide a final copy of the monitoring report to the Consulting Tribe(s).

3.1.1 The Tribal monitor and archaeologist will observe the trenching or excavation activity and examine the trench walls, excavation area, and excavated soil for the presence of cultural resource materials and changes in the soil and matrix.

3.1.2 Samples of the excavated soil will be screened using 1/8 metal mesh to check if artifacts are present. The screen and hand tools will be provided by the government.

3.1.3 Trench walls will be examined for the presence of any evidence of buried intact cultural deposits or buried features.

3.1.4 Individual artifacts found within the trench, excavated area and excavated soil that are not associated with a feature are not considered an inadvertent discovery. Each artifact will be documented. The type, materials, location, measurements, date of manufacture and/or relative date based on chronologies for the area will be recorded.

3.1.5 Each artifact or cultural item will be photographed, except for ceremonial objects and objects of patrimony. The photograph will include a metric scale bar. Photographs of ceramic artifacts will also include a color scale.

3.1.6 If an indefinite feature is found without associated artifacts, the feature will be minimally documented by the Archaeological monitor and Tribal Monitor exposing the feature to allow for the Cultural Resources Program Manager or designated professional archaeologist (SOI qualified) to determine if the feature is significant. If the feature is determined not to be significant, minimal documentation will be completed including mapping of the feature and the location; an overview photograph that shows the feature’s location and a close up of the feature in plan view and profile, as applicable.

Standard archeological procedures and mapping methods will be employed. The soil matrix and color will be documented. If applicable, a soil/charcoal sample may be collected for C14 dating by the NPS archaeological monitor.

3.1.7 All individual artifacts will be analyzed in the field by the Archaeological and Tribal monitors. If they cannot be adequately documented or identified, the artifacts may be temporarily housed in the NPS-JOTR curation facility while being identified. Once identified the artifacts will be returned to the trench location where they were found before the trench is backfilled. They will be reburied in the trench.

3.1.8 A list of all cultural resource materials found during monitoring will be recorded.

The following Tribes may provide monitoring:

Morongo Band of Mission Indians Yuhaaviatam of San Manuel Nation Twentynine Palms Band of Mission Indians Agua Caliente Band of Cahuilla Indians

3.2 Hours of Operations

3.2.1 Hours of operation shall be Monday through Friday between the hours of 7:00 AM and

5:00 PM unless alternate hours are approved by the Contracting Officer and the Contracting Officers Representative (COR). Requests for changes shall be submitted to the COR for CO approval.

3.2.2 Due to the location of the construction site and vicinity of the public, variance to these hours would be considered including idling of equipment, starting of equipment, backup alarms of equipment and delivery of equipment in hours outside of the approved times.

3.3 Period of Performance. Work shall be completed 300 days after NTP issued.