B08_Solicitation_Attachment_1_SOW_Property_Historic_Tree_Pruning_Fairsted.pdf

STATEMENT OF WORK

Frederick Law Olmsted National Historic Site

Core Property And Greenhill Conservation Land

Tree Removal, Stump Grinding, Pruning, and Clean up

1.0 Background

Frederick Law Olmsted National Historic Site (FRLA) is looking to perform tree work as removal or pruning on historic cultural landscape. This is one contract for the Olmsted core property and also for the adjacent property called Green Hill Conservation Lane (GHCL). The Olmsted core property will be known as “core property”. There will be a separate section for the work that will be performed at

GHCL.

Note: A site visit is highly recommended to gain full understanding of this contract.

2.0 Scope

GHCL work:

1. Removal of 7 trees identified in attachement “A”.

2. Stump grinding of 1 stump from removed tree.

3. Removal of all debris generated from removal of 7 trees including the stump grinding debris.

4. Removal of identified fallen trees. These trees fell approximately within the last 5 years.

5. Pruning of identified trees and removal of debris.

Core Property See attachement “B” In each case, the contractor shall provide all personnel, equipment, tools, supervision, and other items and services necessary for performing tree work identified in the SOW. This effort will require special techniques to protect existing landscape resources; this includes using soft felling and/or dismantling techniques, utilizing static rigging techniques, installing construction matting (for example Terramats, Alternamats, etc.) on non-paved surfaces and limiting equipment access to matted areas, limiting work to dry and/or frozen terrain to ensure so that no rutting occurs, limit machinery to existing maintenance roads, remove chips, remove logs without dragging, and utilizing climbing techniques where equipment access is not permitted or accessible.

3.0 Objectives

To remove woody material without causing further damage to the landscape, correct damage, improve tree conditions, and promote safety for people and property by addressing identified potential hazards. This contract also includes the removal of 10 trees on the Greenhill Conservation Land plus stump grinding.

4.0 Tasks

1. The work to be performed under this section shall include general safety standards including subsection on removing trees in accordance with the American National Standard for Arboricultural Operations-- Safety Requirements: ANSI Z133--2017.

a) General Requirements:

i) Removal of wood, debris, and chips from the park and disposal is the responsibility of the contractor. There shall be no sale of wood on government property.

ii) Climbing hooks shall not be worn.

iii) The Contractor shall take all reasonable precautions to avoid damaging surrounding vegetation or lawn areas and prevent gouging and erosion of soils as a result of tree removal operations (i.e. removal of stubs that might dig in and blanketing the area with brush and/or logs to cushion the fall).

2. Pruning: The work to be performed under this section shall include pruning trees in accordance with the American National Standard for Tree Care Operations -- Tree, Shrub, and Other Woody Plant Management -- Standard Practices (Pruning), ANSI A300 (Part 1) - 2017 Pruning and companion publication Best Management Practices – Pruning (3rd Edition) in addition to all safety requirements outlined in ANSI Z133—2017.

a) General Requirements:

i) The contractor shall remove all wood, debris, and chips from the site the same day tree is pruned. Removal and disposal shall be the responsibility of the contractor. There shall be no sale of wood on government property. If debris cannot be removed on the same day, the COR must approve, and contractor will be responsible for safely securing the area.

ii) Pruning shall focus on damaged or dead wood to ensure clean cuts near and along branch bark ridge and branch collar and do not create a stub.

iii) Limb or trunk injuries shall be inspected and noted by contractor and provided to COR.

Only damaged or loose bark should be removed, disturbing a minimal amount of live tissue.

iv) The COR shall be contacted prior to pruning if, after contractor begins working, suggests pruning that is different than outlined in this SOW or if pruning will exceed more than one-fourth of living material from a tree’s crown.

v) Branches shall be removed in such a manner so as to not cause damage to other parts of the tree or other plant material below removal. Branches too large to support with one hand shall be precut to prevent splitting or tearing of the bark. To prevent tree or property damage, branches or portions of branches shall be incrementally removed (dismantled) and lowered to the ground by ropes or equipment where necessary. Under no circumstances can branches with a diameter >4” be dropped freely.

vi) Wounding paint shall not be used.

3. Identified Trees

a) Listing : Botanical – Common Name; Diameter Breast Height in inches (DBH); General Location within landscape (See attachment for photos and work)

i) Magnolia acuminata – Cucumber Magnolia; DBH: 42.2” ; Near parking area and shed

ii) Pinus strobus – Eastern White Pine; DBH: 41.4”; Behind barn along path to south lawn

iii) Acer saccharum – Sugar Maple; DBH: 34”; On slope between P. strobus and T.tomentosa, near large rock

iv) Betula lenta – Black (sweet) Birch; DBH: 25”; Nearest rhododendron

v) Magnolia acuminata – Cucumber Magnolia; DBH: 45.4" ; Between carriage turn and fence

vi) Tsuga canadensis – Canadian (eastern) Hemlock; DBH: 34.7”; In center bed of carriage turn

vii) Acer saccharum – Sugar Maple; DBH: 9“; Along Fairmount St, between shed and fence.

4. Limitations:

a) The Contactor shall confine his operations to 7am—4pm Monday through Friday and no work will be performed on Saturday, Sunday, or on Federal Holidays.

b) The Contractor shall notify the COR a minimum of 24 hours prior to the beginning work once the contractor has received the notice to proceed.

c) The Contractor shall install construction matting (for example Terramats, Alternamats, etc.) to non-paved surfaces and limit equipment access to matted or paved areas only.

d) When soil conditions are such that damage to the ground may be caused by tree work and/or associated equipment operations will be temporarily discontinued or changed in consultation with COR.

e) Safety Requirements will be strictly adhered to in accordance with the American Standards Institute (ANSI) Z133 publication.

f) All tree work will be performed in accordance with the American Standards Institute (ANSI) A300 publication.

g) Contractor employees performing tree work will be accredited by the Tree Care Industry Association or Arborist certified by the International Society of Arboriculture.

h) Project supervisor shall remain on site at all times.

5.0 Contractor Responsibilities

1. RESPONSIBILITY REGARDING EXISTING PLANT MATERIAL AND OTHER LANDSCAPE

FEATURES

a) The Contractor shall preserve and protect all existing vegetation such as trees, shrubs, and turf on or adjacent to the work areas. The Contractor shall be responsible for all unauthorized cutting or damage to trees and shrubs, including damage resulting from careless operation of equipment, stockpiling of materials, or tracking of grass and other surfaced areas by equipment. Such damaged areas or materials shall be restored, repaired, or replaced by the Contractor, as directed by the COR, at no expense to the National Park Service (NPS) prior to initial acceptance. Irreparable damage to trees will be subject to liquidated damages at the current value for a cross-sectional square inch of DBH (Diameter at 4.5’ height) in accordance with the guidelines provided by the Council of Tree and Landscape Appraisers and the International Society of Arboriculture.

b) A site visit and recording of pre-existing conditions is highly recommended by the park.

c) Cultural resources in the park comprise of wide array of resource type, condition, and placement. All identified resources contribute to historical significance outlined in the National Register of Historic Places. The most obvious are the historical hardscapes, structures, and design. Less obvious are ground features, witness trees, small natural landmarks along with pre-contact Native American sites and archeological sites. All such resources, whether visible or hidden, need to be considered, and protected.

2. RESPONSIBILITY REGARDING EXISTING UTILITIES AND STRUCTURES:

a) The Contractor will be held liable for any damages to utilities and structures will be responsible for the protection of existing utilities and related structures. Materials and methods shall conform to the current standards for the area damaged, match existing on-site materials, shall meet the approval of all cognizant officials and the COR. All damaged areas shall make smooth, satisfactory, and imperceptible transitions to existing adjacent work, and shall be performed without additional expense to the NPS. If any utility is damaged/interrupted, the contractor shall make it a high priority and return damaged utility to prior condition within 24 hours.

3. AIR AND WATER POLLUTION CONTROL

a) The Contractor shall take all necessary measures to prevent runoff, soil erosion, air, and water pollution by any material and/or equipment used during construction. The Contractor shall keep the site clean and free of trash and debris.

4. PRE-EXISTING DAMAGE

a) In instances where the contractor finds pre-existing conditions or damage to park resources which may reflect upon the quality of their work or cause them undue liability, the contractor shall not start work until the contractor and COR have agreed on the responsibility for these pre-existing conditions.

5. PERSONAL PROPERTY DAMAGE

a) The contractor shall assume the responsibility for accidents or damage caused to property as a result of performing the required services. An example of damage may include damaged/broken building or vehicle windows from projectiles thrown from equipment.

6. Housekeeping:

The contractor shall keep the work area free from litter. The contractor shall remove all food wraps, cans, etc. at the end of each day.

7. Bathroom Facilities:

There are none. The contractor is responsible for their own bathroom facility. If a porta john is to be brought on site, the contractor shall take direction from the COR as to where it will be located. The contractor shall have the porta john removed at the end of the contract.

8. Government Furnished Equipment:

There is none.

9. CLEANUP AND RESTORATION

a) The Contractor will be required to furnish all labor, materials, and equipment for cleanup and restoration of all disturbed areas or features which have been damaged during the course of work. If so directed by the COR, the Contractor shall be prepared to sweep and wash paved surfaces as needed.

10. APPROVALS: All approvals shall be in writing through COR. Approvals shall be submitted via email using form CM-16. The park will provide the form.

11. Submittals:

There shall be a submittal for:

a. contact list of personnel

b. safety plan

c. any products used example: cabling, fasteners, etc.

6.0 Place of Performance

Frederick Law Olmsted National Historic Site, 99 Warren Street, Brookline, MA 02445

Attachment

Identified Tree Work on core property:

1) Magnolia acuminata – Cucumber Magnolia; DBH: 42.2”; Near parking area and shed, along

Fairmont Street

a) Remove deadwood >2”

b) Reduce water sprouts to acceptable height depending on location

c) Access: Along street power lines, bucket truck or climber.

2) Pinus strobus – Eastern White Pine; DBH: 41.4”; Behind barn along path to south lawn.

a) Remove deadwood >2”

b) Prune upper 15’ of canopy to reduce “sail effect”

c) Access: Climber, possibly bucket truck or crane.

3) Acer saccharum – Sugar Maple; DBH: 34”; On slope between P. strobus and T.tomentosa, near large rock.

a) Prune to reduce weight in canopy

b) Add at least one cable to prevent premature branch failure

c) Access: Climber, spider lift.

4) Betula lenta – Black (sweet) Birch; DBH: 25”; Nearest rhododendron on west slop of lawn.

a) Remove deadwood greater than 2”

b) Access: Climber, spider lift.

5) Magnolia acuminata – Cucumber Magnolia; DBH : 45.4" ; Between carriage turn and fence along

Warren St.

a) Remove stubs to reduce weight on large limbs opposite of damaged side of tree

b) Prune with select weight reduction cuts on scaffold branch ends to encourage strength at limb base

c) Reduce watersprouts and long limbs to reduce leverage and density of canopy to lessen “sail effect.”

d) Remove deadwood >2”

e) Access: Climber, spider lift.

6) Tsuga canadensis – Canadian (eastern) Hemlock; DBH: 34.7”; In center bed of carriage turn.

a) Remove deadwood >2”

b) Access: Climber due to limited height archway, spider lift.

7) Acer saccharum – Sugar Maple; DBH: 9“; Along Fairmount St, between shed and fence.

a) Removal

b) Access: Along street power lines, bucket truck.