NRMJ10002200415 SOW.docx

Mauna Loa Observatory Keeling Building Renovations

Statement of Work (SOW)

Narrative Including Base Contract Requirements Optional Contract Line Items

SOW for the following Base Contract and Options:

CLIN. 01: Base contract: Keeling Building Renovation CLIN. 02: Option - Keeling Building Metal Roof CLIN. 03: Option - Mercury Deck (North) CLIN. 04: Option - Mercury Deck (East)

Summary:

The NOAA Global Monitoring Laboratory (GML) Mauna Loa Atmospheric Baseline Observatory (MLO) is located on the Big Island of Hawaii, at 11,141 ft above sea level on the north flank of the Mauna Loa volcano. The site is often regarded as the “premier atmospheric science site on earth” and is home to numerous high-profile data sets including the “Keeling Curve” that first documented the rise in carbon dioxide in our global atmosphere. The observatory conducts well over 250 daily climatological measurements, some as precise as 1 part in a trillion.

The Keeling Building, located at MLO, is the original structure at the site and is a sixty-five year old (built in 1956), single story, rectangular, cinder block structure with an A-frame wood truss roof system that is clad with a vented corrugated metal deck. There are twelve (12) single pane operable windows in the Keeling Building and two (2) wood access/egress doors. The entire area is open office space with a verified gross square footage of 1,250 square feet (GSF). The building is listed in the NOAA RPMD database as asset HIM01903.

Due to the age of the Keeling building and significance of the science that it represents, NOAA has determined that the original cinder block constructed building is likely eligible for the national historical register. However, it has not been listed as such. The existing mercury deck (roof-level deck) located on the east end of the building has been rebuilt multiple times over the decades and the current configuration is not original. Similarly, the area under the mercury deck was enclosed to serve as a storage area and is also not considered to be original. The west end of the Keeling building has seen two different additions over the decades (small staff bathroom and tank storage room) and neither of these modifications are considered to be original or part of the historic nature of the Keeling building.

All work done on the Keeling building shall be in accordance with the Secretary of the Interior's Standards for Rehabilitation. The Standards (Department of Interior regulations, 36 CFR 67) pertain to historic buildings of all materials, construction types, sizes, and occupancy and encompass the exterior and the interior, related landscape features and the building's site and environment as well as attached, adjacent, or related new construction. The Standards are to be applied to specific rehabilitation projects in a reasonable manner, taking into consideration economic and technical feasibility.

1. A property shall be used for its historic purpose or be placed in a new use that requires minimal change to the defining characteristics of the building and its site and environment.

2. The historic character of a property shall be retained and preserved. The removal of historic materials or alteration of features and spaces that characterize a property shall be avoided.

3. Each property shall be recognized as a physical record of its time, place, and use. Changes that create a false sense of historical development, such as adding conjectural features or architectural elements from other buildings, shall not be undertaken.

4. Most properties change over time; those changes that have acquired historic significance in their own right shall be retained and preserved.

5. Distinctive features, finishes, and construction techniques or examples of craftsmanship that characterize a property shall be preserved.

6. Deteriorated historic features shall be repaired rather than replaced. Where the severity of deterioration requires replacement of a distinctive feature, the new feature shall match the old in design, color, texture, and other visual qualities and, where possible, materials. Replacement of missing features shall be substantiated by documentary, physical, or pictorial evidence.

7. Chemical or physical treatments, such as sandblasting, that cause damage to historic materials shall not be used. The surface cleaning of structures, if appropriate, shall be undertaken using the gentlest means possible.

8. Significant archeological resources affected by a project shall be protected and preserved. If such resources must be disturbed, mitigation measures shall be undertaken.

9. New additions, exterior alterations, or related new construction shall not destroy historic materials that characterize the property. The new work shall be differentiated from the old and shall be compatible with the massing, size, scale, and architectural features to protect the historic integrity of the property and its environment.

10. New additions and adjacent or related new construction shall be undertaken in such a manner that if removed in the future, the essential form and integrity of the historic property and its environment would be unimpaired.

The MLO facility is located at the end of an 18-mile one-lane access road reachable from Saddle Road. The start of the Mauna Loa Access Road is located just to the east of the more well-known access to the Mauna Kea Visitor Center and telescopes. Logistically, the site is at over 11,200 feet in altitude and the sun (UV) conditions can be strong and the air temp significantly cooler than elsewhere on the island. The 18-mile driveway can be challenging for longer vehicles due to the narrow width, rolling topography, and occasional sharp corners. The power lines do cross over the road in multiple locations along the upper half of the MLO access road and may pose an overhead obstruction issue for very tall vehicles (no known issues with the powerlines obstructing access to the site historically). The one-way commute time to the MLO site from either Hilo or Kona typically takes ~90-min.

Scientific measurements obtained at MLO often represent the global background conditions for the atmospheric research community. As such, the measurements taken at the site are highly precise and need to be safeguarded to ensure that indoor room air and/or local site contamination does note negatively impact the long-term records. NOAA has developed a comprehensive banned construction materials (chemicals) list and each product used at the site must be cleared against this banned chemical list prior to use. The banned construction materials list will be provided to vendors and NOAA can assist with reviewing individual products as needed. Furthermore, it will be required to keep the science at MLO operational as much as possible throughout construction activities. For example, temporary power might be required and/or a phased approach to building modifications that allow for scientific systems to stay online to the greatest extent possible.

The MLO site has a number of identified code compliance improvements needed. For example, the interior of the Keeling building currently has a conflict between active plumbing and the electrical breaker panel. All new construction work shall meet current code requirements.

The Federal government is required to follow the National Environmental Protection Act (NEPA) process for all Federal actions. NEPA does apply to this construction effort and NOAA is actively working to get the necessary approvals from the State of Hawaii (Division of Land and Natural Resources (DLNR) / State Historic Preservation Office (SHPO)) and finalize the NEPA process. The NEPA process is running in parallel with this procurement effort and it is anticipated that the NEPA will be finalized after this procurement has been awarded. As such, it is imperative that any/all outcomes resulting from the NEPA process shall be incorporated into the final design before a notice to proceed can be issued and construction begins.

NOAA is interested in building sustainably, using robust materials that support low maintenance over the long-term, and incorporating the elements of LEED building practices (and certification) wherever possible. Thus, the biddable documents shall include the opportunity for bidders to provide alternate approach and products based on reliability and longevity and include value enhancing options to allow for LEED elements.

Exclusions:

The bid set of documents dated 07/30/2021 illustrate the following items which shall be excluded as part of this Work. No costs shall be included or incurred for the following items illustrated on the bid set:

1. Interior partition wall in the existing Keeling Building (A1.2).

2. Keeling Addition and all associated work for the addition.

Contract Line Item No. 01: Base contract: Keeling Building Renovation Original Keeling Building Renovation:

1. Exterior Keeling renovations to original building (detailed below):

a. Using the drawing set provided during the bid process, finalize design and deliver stamped drawings for construction.

b. Banned construction compounds list must be adhered to.

c. The corrugated aluminum roof system is clad with solar on the south facing roof. Inspect the entire roof surface and patch any obsolete vents and noticeable perforations or imperfections. (This work is only required if the Roof Option (below) is not executed.)

d. Replace roof facia, as needed due to deterioration, caulk and paint. Note there are no soffits on the existing roof.

e. The 4” aluminum gutter system shall be inspected, reset as needed, and re-caulked. Rainwater is collected on site for greywater use and existing routing to the cistern should be maintained. Gutter system should be verified to adequately drain water from the roof into the storage cistern.

f. The window system should be removed back to the block and replaced with a similar product. Current windows are an aluminum single pane operable casement window with three actual panes of glass separated by two mullions. Provide UV film on all windows to allow light but remove heat and protect the science instrumentation. Provide two frosted glass windows (including only one that can open) along the north wall. All remaining windows in the building are non-opening and regular glass. Due to the historic nature of the Keeling building, all effort should be made to use products that keep the historic look while also providing for modern and efficient options in accordance with the DOI’s Standards for Rehabilitation, whenever possible.

g. The front door is wood in a wood frame built in a masonry opening. The door shall be removed to the cinderblock and replaced with a stainless-steel block frame and fiberglass door with artificial wood look. Recommend a 12” vision panel built into the door and include door handles and keypad lock on the external door as specified. Replace all exterior and interior trim to match existing. Due to the historic nature of the Keeling building, all effort should be made to use products that keep the historic look while also providing for modern and efficient options in accordance with the DOI’s Standards for Rehabilitation, whenever possible.

h. All outdoor convenience outlets to be replaced with GFCI outlets per code.

i. The exterior block shall be scraped, caulked, and repainted with an exterior grade paint. North facing wall color will differ from the other three wall paint colors. North wall will be a darker shade and the other three walls will maintain their original color. The MLO facility is clearly visible from Saddle Road and efforts should be made to reduce this visibility on the north side of the facility. Due to the historic nature of the Keeling building, all effort should be made to use products that keep the historic look while also providing for modern and efficient options in accordance with the DOI’s Standards for Rehabilitation, whenever possible.

2. Interior Keeling renovations to original building (detailed below):

a. Banned construction compounds list must be adhered to.

b. Disconnect sink plumbing and remove/cap supply and drain lines. Save kitchen cabinets and sink for historic viewing.

c. Relocate sink and cabinet(s) to meet code compliance for access to the breaker panel. Patch wall to match existing, as needed. Due to the historic nature of the Keeling building, all effort should be made to use products that keep the historic look while also providing for modern and efficient options in accordance with the DOI’s Standards for Rehabilitation, whenever possible.

d. Upgrade breaker panel to meet current code compliance and support all power requirements (factor in removal of existing mercury deck subpanel into upgrade). Replace wiring and conduits to existing circuits as needed to meet code requirements. Current conduit is poorly supported and organized.

e. Provide a new VCT floor over the existing VCT Floor. Work includes a skim coat to the existing floor with water based Ardex to self level and prepare the floor to receive new VCT that will match existing.

f. Keep the existing 15/16 grid and replace fiberglass 2x4 lay in ceiling with a USG regular 2x2 drop ceiling with a 15/16 grid. Provide intermediate T’s to support 2x2 configuration for the ceiling system.

g. Existing 2x4 LED overhead lights remain. Provide motion detection / occupancy sensors light switches to control overhead lighting circuits.

h. The current bathroom door is wood in a wood frame built in a masonry opening. The door shall be removed to the cinderblock and replaced with a stainless-steel block frame and interior-grade fiberglass door to match the front door. Due to the historic nature of the Keeling building, all effort should be made to use products that keep the historic look while also providing for modern and efficient options in accordance with the DOI’s Standards for Rehabilitation, whenever possible.

i. Furnish all necessary fire extinguishers placed to meet code requirements.

j. Caulk and paint interior perimeter walls including all surface mounted encumbrances.

Contract Line Item No. 2: Option - Keeling Building Metal Roof Replace Original Keeling Building Roof System

1. No drawing(s) for this option were provided during the bid process. Reference bid set drawings for CLIN 2 above for general guidance. This option should include all necessary design work to deliver a stamped drawing(s) for construction.

2. Banned construction compounds list must be adhered to.

3. Work needs to be coordinated with science projects inside Keeling Building to remain operational during construction and not be exposed to potential rain.

4. Replace roof framing with 2”x6” trusses.

5. Remove and reinstall interior drop ceiling/lighting fixtures/associated circuits (power, phone, etc.) as needed to allow for roof truss replacement.

6. Replace standing-seam metal roof decking

7. Reinstall solar power system on south facing roof surface.

Contract Line Item No. 3: Option - Mercury Deck (North) Mercury Deck relocation and demo

1. Using the drawing set provided during the bid process, finalize design and deliver stamped drawings for construction.

2. Banned construction compounds list must be adhered to.

3. Construct a new science roof deck platform along the north edge of the Keeling building that allows access to existing aerosol-sampling stack using steel supports, and composite decking or metal decking (stainless, galvanized, or aluminum). Refer to the drawing set (A1.1 through 1.9, as applicable).

a. Work may need to be phased in order to allow existing experiments to remain on line while a new deck is constructed.

b. Platform should be 9’ x 7.5’ with railings and allow access onto the roof of the Keeling building via gate.

c. Stair access to the platform.

d. Power required on platform (four quad-outlets each on separate breakers).

e. All metal must be connected to the site grounding system.

f. Conduits (4” diameter, x2 and 2” diameter, x2) to pass sampling lines from platform into Keeling building interior.

g. Install chain link fencing around stairs with one locking gate along the north edge.

h. The MLO facility is clearly visible from Saddle Road and efforts should be made to reduce this visibility on the north side of the facility. To that end, all metal framing and the fencing colors should coordinate with the new paint color on the north side of Keeling Building and the roof color to reduce the visual impact of the site whenever possible.

4. Demo old storage area and mercury roof deck at east end of Keeling building.

a. Includes removing old electrical circuits and subpanel.

b. Plug and patch all wall penetrations to Keeling building east wall (interior and exterior).

c. Patching asphalt/concrete at footer locations.

d. Install cylinder racks on the east wall of the Keeling Building. Storage racks should be able to accommodate at least 24 full sized cylinders, be anchored to the ground, include at least two chains per cylinder to meet OSHA code, and be suitable for outdoor use (galvanized, etc.).

5. Provide a new 20’ sea container (high cube at 9.5’ ft height) to the site (location TBD) to serve as a storage area.

a. Level and compact location for the 20' sea container, if needed, prior to placement on site.

b. Anchor the sea container to the foundation according to manufacturer specs.

c. Sea container to remain on site post project completion.

d. Coordinate exterior color of sea container with Keeling Building colors.

Contract Line Item No. 4: Option - Mercury Deck (East) Mercury Deck relocation and demo

1. No drawing(s) for this option were provided during the bid process. Reference bid set drawings for CLIN 2 above for general guidance. This option should include all necessary design work to deliver a stamped drawing(s) for construction.

2. Banned construction compounds list must be adhered to.

3. Demo old storage area and mercury roof deck at east end of Keeling building.

a. Includes removing old electrical circuits and subpanel.

b. Plug and patch all wall penetrations to Keeling building east wall (interior and exterior).

c. Patching asphalt/concrete at footer locations.

4. Provide a new 20’ sea container (high cube at 9.5’ ft height) to the site at the location of the former Mercury deck and storage area (immediately to east of Keeling Building) to serve as a storage area.

a. Level and compact location for the 20' sea container, if needed, prior to placement on site. The sea container should be placed on asphalt or concrete base as appropriate for the structure to remain level over the project's expected life.

b. Anchor the sea container to the foundation according to manufacturer specs.

c. Allow for a walkway between Keeling Building exterior wall (east) and new container placement. Walkway should be 30”.

d. Coordinate exterior color of sea container with Keeling Building colors.

e. Provide interior lighting circuit (from Keeling Building panel) with switch at door and a minimum of 2 interior, LED, low-profile light fixtures (centered along ceiling) with metal protective cages around each fixture.

f. Provide ramp from driveway grade to sea container floor height (south side).

5. Design and construct a new science roof deck platform above the sea container along the east edge of the Keeling building. Deck can use the sea container roof surface for structure or the deck can be free standing and the sea container sits underneath. Deck surface height can range from 10’ above grade to 12’ above grade. All deck structural support should be galvanized steel with composite decking or metal decking (stainless, galvanized, or aluminum) surfaces. (No drawings detailing this option exist.)

a. Work may need to be phased in order to allow existing experiments to remain on line while a new deck is constructed.

b. All foundation work (concrete) as required to support the container, deck, stairs, and fencing.

c. The platform should be sized to match the entire roof of the sea container with railings.

d. Platform should also provide access onto the roof of the Keeling building via gate and stairs (if required).

e. Stair access from the ground level to the platform (minimum stair width should be 48”. Stair can be located on the east or west side of the container. If the stair is on the west side, fencing requirements below might be simplified, however, must ensure roof access to the Keeling Building is able to be accommodated.

f. Provide a gate (minimum of 6’ wide) in platform handrails on the south side of the container to allow for materials to be raised straight onto the deck from the parking lot.

g. Power required on platform (four exterior quad-outlets each on separate breakers) to comply with code requirements.

h. All metal must be connected to the site grounding system.

i. Conduits (4” diameter, x2 and 2” diameter, x2) to pass sampling lines from platform into Keeling building interior.

j. Install chain link fencing around stairs with one locking gate for access.

k. The MLO facility is clearly visible from Saddle Road and efforts should be made to reduce this visibility on the north side of the facility. To that end, all metal framing and the fencing colors should coordinate with the new paint colors on the Keeling Building to reduce the visual impact of the site whenever possible.

l. Install cylinder racks on either the east or north side of the container. Storage racks should be able to accommodate at least 24 full sized cylinders, be anchored to the ground, include at least two chains per cylinder to meet OSHA code, and be suitable for outdoor use (galvanized, etc.).