S-6-26_SCOPE_OF_WORK.pdf

City of Cheyenne / Bid S-6-26 / Scope of Work

HIGH PLAINS ARBORETUM –GREENHOUSE AND LATH HOUSE DEMOLITION

AND ABATEMENT

GENERAL SCOPE OF WORK

GREENHOUSE

1. GENERAL SCOPE OF WORK

a. In general, the scope of work for the Greenhouse involves the abatement of asbestos containing materials (ACM) and removal of lead-based and lead-containing paint on existing components of the existing historic greenhouses, lean-to greenhouses, connector spaces between the Head

House and the Greenhouses and between the East and West Greenhouses, and associated cold frames.

b. Note that there are existing n tunnels that run north-south through the connector between the Head House and the Greenhouses and East

Greenhouse and the West Greenhouse as well as east-west below the slab in portions of the East Greenhouse and the West Greenhouse.

2. DEMOLITION AND ABATEMENT

a. The following existing items shall be removed and disposed of as part of scope of the demolition and abatement contract:

i. chicken wire hail protection – the galvanized steel pipe frame shall remain

1. after removing glazing and wood components, temporarily secure the frame mounts to the steel frame of the greenhouse

ii. lead-based and lead-containing paint on the steel frame, other steel components, pipes, steel cap at top of concrete walls, rack & pinion sash operating hardware, etc.

iii. wood components of the greenhouses, including the wooden glazing bars, muntins, sashes, etc. (glazing compound on glazing bars, etc.

is asbestos containing and shall be removed with the glazing bars, etc.)

iv. wood ledger, framing and plywood sheathing at the flat portion of roof at the southwest greenhouse where it butts to the west greenhouse.

1. to facilitate removal of the wood ledger, etc. as noted above, remove and salvage the short horizontal aluminum framing members and fasteners at the top of the frames and salvage for reinstallation by others

2. provide temporary bracing and support for the southwest greenhouse framing as required

v. all remaining glass and glazing

1. remove and salvage the metal glazing retainer caps for reinstallation by others

vi. overhead steel steam piping in the connector spaces between the

Head House and the Greenhouses and between the East and West

Greenhouses

vii. existing soil in the concrete planting beds, wood planting benches and cold frame area, and in an area 6 feet outside the perimeter of the greenhouses, cold frames, etc. shall be removed to the depth necessary to remove the lead contamination.

viii. wood at planting beds, wood planting benches and cold frame area.

b. remnants of glazing compound at glazing bars and in grooves at glazing bars at the southwest lean-to greenhouse.

c. wood doors, frames and trim where shown

3. Notes:

a. The demolition and abatement contractor shall remove and salvage the following items and provide them to the general contractor for reuse:

i. glazing bar caps

ii. winged retainer clips on cold frame

b. Clip angles at the steel cap at the top of the concrete foundation walls used to attach wooden sashes and end wall framing shall remain. The General

Contractor responsible for installing the new wooden sashes and end wall framing shall provide new wood screws to secure those components to the vertical leg of the clip angle. Typical.

c. The existing gas-fired radiant heaters in the east and west greenhouses will be removed by the general contractor, prior to work of the demolition and abatement contract, and salvaged for reinstallation.

d. The existing gas-fired radiant heater in the connector between the east and west greenhouses will be removed by the general contractor, prior to work of the demolition and abatement contract.

e. All electrical conduits, light fixtures, etc. in the greenhouses and associated spaces shall be removed and disposed of by the demolition and abatement contractor.

f. Sheet metal planting trays in the greenhouse shall have the lead-based and lead-containing paint removed in preparation for repainting by others.

LATH HOUSE

1. GENERAL SCOPE OF WORK

a. In general, the scope of work involves the removal of lead-based and lead-containing paint on existing components of the existing historic Lath House.

2. DEMOLITION AND ABATEMENT

a. The following existing items shall be removed and disposed of as part of scope of the demolition and abatement contract:

i. Lead-based and lead-containing paint on the steel frame, etc.

ii. Wood components including the wood lath at the walls and roof as well as associated trim, etc.

i. Existing soil in the Lath House, shall be removed to the depth necessary to remove the lead contamination, 2 inches minimum.

ii. Existing soil in an area 6 feet outside the perimeter of the Lath

House, shall be removed to the depth necessary to remove the lead contamination.

HEAD HOUSE

This portion of the project has been AWARDED SEPARATELY, and is listed for general awareness and coordination purposes only.

1. GENERAL SCOPE OF WORK

a. In general, the scope of work for the Head House involves the abatement of asbestos containing materials (ACM) and removal of lead-based and lead-containing paint on existing components of the existing historic Head

Houses and associated spaces that are affected by the proposed renovation

2. DEMOLITION AND ABATEMENT

a. The following existing items shall be removed and disposed of as part of scope of the demolition and abatement contractor:

i. wood windows and trim

ii. wood doors, frames and trim where shown

iii. floor tile and mastic in the restroom

iv. overhead door, frame and trim

v. loose paint on exterior wood trim in preparation for repainting

SCHEDULE

The Abatement Contractor will be required to work in close coordination, from the General

Contractor completing the work under City of Cheyenne Bid #S-5-26 for the High Plains

Arboretum – Headhouse, Greenhouse, and Lath House Renovation. The abatement project shall be completed in accordance with the following schedule:

GREENHOUSE HAZARDOUS MATERIAL ABATEMENT

4/15/2026 to 5/15/2026

LATH HOUSE HAZARDOUS MATERIAL ABATEMENT

5/15/2026 to 6/15/2026