Highland_Park_Rising_Main_3_Restoration_Specifications.pdf

Specification of work: Highland Park Rising Main 3 Replacement Restoration

1.1 Location: Highland Park, directly south of the Highland Park Bridge on-ramps.

1.2 Project Overview:

• Restoration of a site which was cleared for the replacement of rising water mains.

• Creation of a public facing restoration demonstration with educational signage aimed at

Highland Park Bridge.

• Improvement of age and species diversity in the affected area

• Suppression of invasive species and restoration of indigenous biodiversity

1.3 Scope of Work: 2 Acres of Forest Restoration

• Planting of trees, understory shrubs, and a forest understory seed mix on approximately 1.5 acres of cleared utility RoW in Highland Park

• Removal of dead trees, vines, invasive species, and other debris on 0.5 acres

• Planting of high-visual appeal understory species on 0.5 acres

• Incorporation of 2000lbs of biochar into forest soils

• Installation of individual tree protection cages and tubes, o Plastic tubes are prohibited in work areas 1 and 3.

• Annual tree care and maintenance for a period of 5 years

• Twice-yearly suppression of invasive species through mechanical and chemical means

• Monthly inspections and ongoing maintenance of deer protection for a period of 5 years

• Removal of all fencing materials after a period of five years

1.4 Definitions

• Backfill: The earth used to replace or the act of replacing earth in an excavation.

• Balled and Burlapped Stock: Plants dug with firm, natural balls of earth in which they were grown (“root ball”), with a ball size not less than the diameter and depth recommended by ANSI

Z60.1 for type and size of plant required; wrapped with burlap, tied, rigidly supported, and drum laced with twine with the root flare visible at the surface of the ball as recommended by ANSI

Z60.1.

• Balled and Potted Stock: Plants dug with firm, natural balls of earth in which they are grown and placed, unbroken, in a container. Ball size is not less than the diameter and depth recommended by ANSI Z60.1 for type and size of plant required.

• Container-Grown Stock: Healthy, vigorous, well-rooted plants grown in a container, with a well-established root system reaching sides of container and maintaining a firm ball when removed from container. Container shall be rigid enough to hold ball shape and protect root mass during shipping and be sized according to ANSI Z60.1 for type and size of plant required.

• Finish Grade: Elevation of finished surface of engineered stormwater soil.

• Multi-stem trees: Trees that have shall have three or more main stems that arise from the ground from a single root crown or at a point just above the root crown.

• Pesticide: A substance or mixture intended for preventing, destroying, repelling, or mitigating a pest. Pesticides include insecticides, miticides, herbicides, fungicides, rodenticides, and molluscicides. They also include substances or mixtures intended for use as a plant regulator, defoliant, or desiccant. Some sources classify herbicides separately from pesticides.

• Pests: Living organisms that occur where they are not desired or that cause damage to plants, animals, or people. Pests include insects, mites, grubs, mollusks (snails and slugs), rodents

(gophers, moles, and mice), unwanted plants (weeds), fungi, bacteria, and viruses.

• Planting Area: Areas to be planted.

• Planting Soil: Existing, on-site soil; imported soil; engineered stormwater soil; or manufactured soil that has been modified with soil amendments and perhaps fertilizers to produce a soil mixture best for plant growth.

• Plant; Plants; Plant Material: These terms refer to vegetation in general, including trees, shrubs, vines, ground covers, ornamental grasses, bulbs, corms, tubers, or herbaceous vegetation.

• Root Flare: Also called "trunk flare." The area at the base of the plant's stem or trunk where the stem or trunk broadens to form roots; the area of transition between the root system and the stem or trunk.

• Stem Girdling Roots: Roots that encircle the stems (trunks) of trees below the soil surface.

• Subgrade: The surface or elevation of subsoil remaining after excavation is complete, or the top surface of a fill or backfill before planting soil is placed.

• Tree Soil: Native soils from site excavation to be amended with organic compost as herein specified. This soil is to be used only as necessary in tree pits not directly connected to stormwater infrastructure only.

2.1 Submittals

• Submit complete product data for all materials furnished under this Section. One set of complete submittals is required per planting season. Any changes to materials require resubmittal.

• Samples, testing and certifications of all materials shall be submitted for inspection and acceptance the request of the City of Pittsburgh Department of Public Works. None of the landscaping materials shall be delivered to the site until samples and test results are approved by the City, however such approval does not constitute final acceptance.

o Mulch and all other soil amendments: 1-quart volume of each organic mulch required;

in sealed plastic bags labeled with composition of materials by percentage of weight and source of mulch. Each Sample shall be typical of the lot of material to be furnished;

provide an accurate representation of color, texture, and organic makeup.

• Submit to the Project Manager a schedule for planting soil application, planting, and maintenance events. Schedule shall conform to planting seasons as defined in these

Specifications and take into account allotted days for completion of the Work in the Contract;

any extensions of the time allotment to be made for accommodation of planting seasons may be made at the sole discretion of the City.

• Submit a proposed list of plant species with botanical and common names, variety, size, quantity, and source of plant materials in the varieties, sizes, and quantities indicated on the

Drawings. Sources of planting materials must be confirmed by the CONTRACTOR and written documentation of plant availability in accordance with the submitted planting schedule shall be provided by the supplier(s).

• Plant Substitutions for plants not available locally should be ordered from nurseries located out of the state. Substitutions may be permitted only after substantiated written confirmation and documentation is submitted that a specified plant is either not obtainable or is not recommended for the location as shown on the landscaping plan. All substitutions must be submitted to and approved by the Project Manager.

• The CONTRACTOR must provide to a Project Manager each of their plant supplier’s shipping lists for review and approval after ordering, but PRIOR to supplier’s shipping any plant material. Only specified plant species will be accepted. No cultivated varieties (cultivars) are acceptable.

• Sketch Plans, photographs, and written documentation of all plant installations, including initial planting and any plant replacements at the 8-week provisional maintenance period or during the 1-year warranty period shall be submitted for approval within two (2) weeks of 8-week provisional acceptance, and the 1-year warranty period. Sketch Plans must include a revised schedule with species (botanical name) and cultivars and final quantities along with a revised planting plan. Landscape Sketch Plans may be a markup of the original Landscaping Plan.

Changes to the original Landscaping Plan shall be clearly noted and shown in red. All sketches shall be labeled “As Planted”, dated, and shall contain the name or initials of the Designer.

Photographic documentation shall be submitted in accordance with Section 01110

(Photographic Documentation) of these Specifications.

• All signage to be mounted on project assets must be submitted to the City no less than 6 weeks in advance for review and approval. This includes graphics and all copy to be included on the signs.

2.2 Inspection of Plant Materials

• The City may observe plants and trees at supplier before delivery to site for compliance with requirements for genus, species, variety, size, and quality. The City reserves the right to be present for inspection of plants at nursery and may attach their seal to each plant.

• The City / Project Manager shall be present at time of delivery to inspect plants and trees delivered to the site. A Project Manager retains the right to inspect or reject substandard plants or trees for size and condition of balls and root systems, insects, injuries, latent defects, and speciation, and to reject unsatisfactory or defective material at any time during progress of work. Rejected plants and trees must be removed immediately from the project site.

• The CONTRACTOR shall stake the plant layout for approval by the Project Manager. No plants or trees may be planted without on-site approval by the City. All trees shall be labeled by tree name (genus, species, and cultivar), and all labels securely attached to individual trees upon delivery to the jobsite.

2.3 Project Conditions

• Restrictions: Planting shall only be performed during the periods within the seasons which are normal for such work as determined by weather and by locally acceptable practice and which are approved by the City. No planting shall be performed between acceptable planting periods unless otherwise approved by the City. The CONTRACTOR shall schedule his work to conform to these requirements. Planting close to the end of the season should be avoided, if possible, to maximize favorable planting conditions.

o Spring Planting: March 15 – June 15.

o Fall Planting: September 15 – December 15.

• Weather Limitations: Proceed with planting activities only when existing and forecasted weather conditions permit planting to be performed when beneficial and optimum results may be obtained. Apply products during favorable weather conditions and according to manufacturer’s written instructions. The City reserves the right to postpone planting activities due to unfavorable weather conditions.

• During periods of drought occurring during the first 12 month after planting, irrigation shall be provided as approved by the City Forestry Division. Water rates shall be equivalent to 1 inch of rainfall per week.

• Under no circumstances shall planting soil be worked under frozen or saturated conditions as determined by City.

• Access over finished grade soils shall be restricted. If access is required across placed soils, CONTRACTOR shall be required to rework compacted soil areas prior to fine grading to the full depth of the placed soils as directed by OWNER.

2.4 Warranty Period and Replacements

• The CONTRACTOR shall warranty that plant material is properly handled and installed. The

CONTRACTOR shall be responsible for replacement planting required for a period of 12 months after a planting is certified by the City. At the end of the warranty period, plants that are missing, dead, not true to name or size as specified, or not in satisfactory growth, as determined by the City, shall be replaced within the quantity limits set forth below. Any determination made by the City/ Project Manager regarding plant replacement shall be final, and the CONTRACTOR shall be responsible for replacing the plantings in kind (unless otherwise directed) as soon as weather conditions permit during the next appropriate planting season at no additional cost to the City. The CONTRACTOR shall not be responsible for damage or plant mortality due to vandalism.

• All replacement of plants and trees shall be conducted in accordance with the material and construction (including schedule) in these Specifications.

• At the end of 1 year from the planting date, an inventory is to be taken, and should the overall survival rate of the planting be lower than 85%, replacement trees are to be furnished and installed by the contractor sufficient to bring the number of remaining plants back to 100%

(2000 stems).

2.5 Final Inspection and Final Acceptance

• At the end of the warranty period, final inspection will be made by a Project Manager. The

Project Manager will request the CONTRACTOR to attend the site inspection at least ten (10) calendar days before the anticipated date of inspection.

• Upon completion of the inspection, the Project Manager shall provide a list of items to be completed or corrected. Corrective Work shall be completed within two (2) weeks of receipt of items needing correction or completion.

• After all necessary corrective Work has been completed, a Project Manager will certify in writing the final acceptance of planting.

3.1 Project Specifications

3.1.1 Work Area 1 (0.5 Acres)

Description: Wooded area along the on-ramp to the Highland Park Bridge. Area is bounded by the open canopy utility cut to the South and extends from the bridge abutment on the East to the split of the ramps on the West.

• Removal of invasive species and dead or hazard trees o All examples of the following species are to be cut and treated with herbicide. Tops of all non-vining species are to be chipped or removed from the site. Tops of vine species are to be cut at no less than 6’ from the ground to prevent re-rooting and allowed to self-remove from tree canopy.

▪ Amur corktree, Phellodendron amurense

▪ Siebold's viburnum, Viburnum sieboldii

▪ Porcelainberry, Ampelopsis glandulosa

▪ Japanese honeysuckle, Lonicera japonica

▪ Multiflora rose, Rosa multiflora

▪ Oriental bittersweet, Celastrus orbiculatus

▪ Amur honeysuckle, Lonicera maackii

▪ Japanese knotweed, Reynoutria japonica o Removal of all shade trees under 6” DBH within 10’ of the Jersey barriers along the roadway o Removal of standing dead trees or trees in Poor or Critical condition

▪ Logs are to be retained on site, brush is to be chipped and left on site or taken to the south of Work Area 2

• Canopy Tree Installations o Stocking density: 100 Stems per acre, distribution as per Appendix B o Size: A mixture of 2-4 gallon containerized stock (up to 100%), bare-root (up to 25%) o No new plantings to occur within 10’ of Jersey barriers along the roadway o Species Selection: Provided in appendix A

• Understory trees & Shrubs/acre o Stocking density: 200 stems/acre o Size: A mixture of 2-4 gallon containerized stock (up to 100%), bare-root (up to 25%) o No new plantings to occur within 10’ of Jersey barriers along the roadway o Species Selection: Provided in appendix A

• Seed Mix: ERNMX-155 or equivalent flowering mix o Stocking density: 10 lbs/acre o Requirements for any proposed alternative mix:

▪ Species Selection: Seed mix shall contain a blend of native species

▪ Seed mixes should contain a mixture of no less than 75% perennial species

▪ No more than 60% of the mix shall be grasses

• Tree Protection o Trees are to be protected using plastic-free tree protection (excluding fasteners) o Tree protectors shall be no less than 4’ in height, and no narrower than 12” diameter o No fewer than 2 fiberglass poles per tree cage shall be installed o Plastic zip ties are permitted to attach protectors to support posts

3.1.2 Work Area 2 (0.5 Acres)

Description: Open canopy utility corridor starting at the valve emplacement to the North of Pittsburgh

Zoo Employee Parking area along Lake Drive. Corridor extends approximately 500’ to the East, transitioning to Work Area 3 to the South of the on-ramp island.

• Removal of invasive species o All examples of the following species are to be treated with herbicide. As this site has no well-developed cover, removal of material is not required.

▪ Amur corktree, Phellodendron amurense

▪ Siebold's viburnum, Viburnum sieboldii

▪ Porcelainberry, Ampelopsis glandulosa

▪ Japanese honeysuckle, Lonicera japonica

▪ Multiflora rose, Rosa multiflora

▪ Oriental bittersweet, Celastrus orbiculatus

▪ Amur honeysuckle, Lonicera maackii

▪ Japanese knotweed, Reynoutria japonica

• Tree Installations o Stocking density: 200 Stems per acre, distribution as per Appendix B o Size: A mixture of 2-4 gallon containerized stock (up to 100%), bare-root (up to 25%) o No shade trees are to be installed within 10’ of the centerline of the rising mains o Species Selection: Provided in appendix A

• Understory trees & Shrubs/acre o Stocking density: 1000 stems/acre o Size: A mixture of 2-4 gallon containerized stock (up to 100%), bare-root (up to 25%) o Species Selection: Provided in appendix A

• Seed Mix: ERNMX-155 or equivalent flowering mix o Stocking density: 15 lbs/acre o Requirements for any proposed alternative mix:

▪ Species Selection: Seed mix shall contain a blend of native species

▪ Seed mixes should contain a mixture of no less than 75% perennial species

▪ No more than 60% of the mix shall be grasses

• Tree Protection o Trees are to be protected using a mixture of tree cages and tree tubes as appropriate o Tree cages shall be no less than 4’ in height, and no narrower than 12” diameter o No fewer than 2 fiberglass poles per tree cage shall be installed o Plastic zip ties are permitted to attach protectors to support posts

3.1.3 Work Area 3 (0.5 Acres)

Description: Open canopy utility corridor starting at end of Work Area 2 to the North of Lake Drive and to the South of the on-ramp island. Corridor extends approximately 450’ to the East, transitioning to

Work Area 4 to the South of the on-ramp abutments.

• Removal of invasive species o All examples of the following species are to be treated with herbicide. As this site has no well-developed cover, removal of material is not required.

▪ Amur corktree, Phellodendron amurense

▪ Siebold's viburnum, Viburnum sieboldii

▪ Porcelainberry, Ampelopsis glandulosa

▪ Japanese honeysuckle, Lonicera japonica

▪ Multiflora rose, Rosa multiflora

▪ Oriental bittersweet, Celastrus orbiculatus

▪ Amur honeysuckle, Lonicera maackii

▪ Japanese knotweed, Reynoutria japonica

• Tree Installations o Stocking density: 200 Stems per acre, distribution as per Appendix B o Size: A mixture of 2-4 gallon containerized stock (up to 100%), bare-root (up to 25%) o No shade trees are to be installed within 10’ of the centerline of the rising mains o Species Selection: Provided in appendix A

• Understory trees & Shrubs/acre o Stocking density: 1000 stems/acre o Size: A mixture of 2-4 gallon containerized stock (up to 100%), bare-root (up to 25%) o Species Selection: Provided in appendix A

• Seed Mix: ERNMX-155 or equivalent flowering mix o Stocking density: 15 lbs/acre o Requirements for any proposed alternative mix:

▪ Species Selection: Seed mix shall contain a blend of native species

▪ Seed mixes should contain a mixture of no less than 75% perennial species

▪ No more than 60% of the mix shall be grasses

• Tree Protection o Trees are to be protected using tree cages only o Tree cages shall be no less than 4’ in height, and no narrower than 12” diameter o No fewer than 2 fiberglass poles per tree cage shall be installed o Plastic zip ties are permitted to attach protectors to support posts

3.1.4 Work Area 4 (0.5 Acres)

Description: Open canopy utility corridor starting at end of Work Area 3 to the to the South of the on-ramp abutments. Corridor extends approximately 550’ to the East, terminating at the valve emplacements to the East.

• Removal of invasive species o All examples of the following species are to be treated with herbicide. As this site has no well-developed cover, removal of material is not required.

▪ Amur corktree, Phellodendron amurense

▪ Siebold's viburnum, Viburnum sieboldii

▪ Porcelainberry, Ampelopsis glandulosa

▪ Japanese honeysuckle, Lonicera japonica

▪ Multiflora rose, Rosa multiflora

▪ Oriental bittersweet, Celastrus orbiculatus

▪ Amur honeysuckle, Lonicera maackii

▪ Japanese knotweed, Reynoutria japonica

• Tree Installations o Stocking density: 300 Stems per acre, distribution as per Appendix B o Size: A mixture of 2-4 gallon containerized stock (up to 100%), bare-root (up to 25%) o No shade trees are to be installed within 10’ of the centerline of the rising mains o Species Selection: Provided in appendix A

• Understory trees & Shrubs/acre o Stocking density: 1000 stems/acre o Size: A mixture of 2-4 gallon containerized stock (up to 100%), bare-root (up to 25%) o Species Selection: Provided in appendix A

• Seed Mix: ERNMX-155 or equivalent flowering mix o Stocking density: 15 lbs/acre o Requirements for any proposed alternative mix:

▪ Species Selection: Seed mix shall contain a blend of native species

▪ Seed mixes should contain a mixture of no less than 75% perennial species

▪ No more than 60% of the mix shall be grasses

• Tree Protection o Trees are to be protected using a mixture of tree cages and tree tubes as appropriate o Tree cages shall be no less than 4’ in height, and no narrower than 12” diameter o No fewer than 2 fiberglass poles per tree cage shall be installed o Plastic zip ties are permitted to attach protectors to support posts

3.2 Installation of Trees and Shrubs

• All trees are to be planted within 5 (five) growing seasons from the start of the project.

• Remove all debris from the pit and tamp loose soil in the bottom of the pit by hand.

• Do not handle the plant by the trunk, branches, leaves or stem.

• Place the plant straight in the center of the planting pit, carrying the plant by the root mass.

• Carefully cut and remove all at least two-thirds wire baskets that are packaging the root system using the least amount of disturbance as possible.

• Cut and remove all ropes around the burlapped ball. Remove all nails. Remove all burlap, wires, and/or other materials from the planting hole.

• When planting container plants, scarify the sides and bottom of the root mass such that no roots continue to circle around the root mass. When possible, pull encircling roots away from root mass and position them in the soil around the planting hole such that they are being pulled away from the plant.

• Backfill planting pit with soil and tamp firmly to fill all voids and air pockets. Do not over compact soil (backfilled soil should have a maximum bulk density of 1.5g/cm3). Make sure plant remains straight during backfilling/tamping procedure.

• The top of the root mass of the trees/shrubs should be flush with, or slightly elevated (no more than 1/8th its height) above the final grade. Do not cover stem with soil or mulch.

• When planting on a slope, plant “out-of-the-hill” by raising the grade around the planted hole so it is flat at the surface. Do not plant “into-the-hill” by lowering the grade and do not leave the grade at an angle.

• Water plants thoroughly immediately after planting to saturate backfill. Watering shall occur of a sufficient quantity to saturate the backfill and shall be applied slowly enough to sink into the soil avoiding runoff.

• A layer of mulch should be placed around each tree and shrub installed as set forth in herein and as indicated in planting detail Drawings.

• Maintain protection of trees during installation and maintenance periods. Treat, repair or replace any damaged planting.

• During planting, all areas shall be kept neat, clean and free of all trash and debris, and all reasonable precautions shall be taken to avoid damage to existing plants, turf, structures, and private property.

• Remove all strings and wire from the plant materials, unless otherwise directed by the City.

• Promptly remove soil debris created by work from paved areas. Clean wheels of vehicles before leaving site to avoid tracking soil onto roads, walks or other paved areas.

• Final cleanup shall be the responsibility of the CONTRACTOR and consist of removing all trash and materials incidental to the project and disposing of them off-site.

• When planting on side slopes, grade shall be raised to provide a level surface for planting.

3.3 Incorporation of Biochar into Forest Soils (all areas)

Biochar shall be incorporated into the soils of the planting site through two methods, detailed below.

• Tree plantings – each planting hole shall have 0.5lb of biochar incorporated into the backfill soil

• Broadcast application – the entire work site shall be subject to a broadcast application of biochar at a rate of 0.25 tons per acre, to occur prior to the application of the seeding mix.

3.4 Watering of Planted Materials (all areas)

The contractor shall water planted materials at an interval not to exceed 3 weeks during the growing season for the first two years of the project. Watering is to be performed at the discretion of the contractor within this window depending on weather conditions. Watering is to be billed per event at a fixed rate as defined in the contract proposal, the number of watering events is not to exceed 20 for the project duration.

3.5 Invasive Species Suppression (all areas)

Twice per year, the contractor shall engage in invasive species suppression of all the previously listed species at the site. A combination of mechanical and chemical means are authorized for this activity, permits shall be issued through the City Forestry Division.

3.6 Removal of tree protection (all areas)

At the end of the fifth year following the completion of tree planting, all wire cages and all stakes are to be removed from the planting site. Any tree tubes are to be left on the trees (without any staking materials) until such a time as they have split naturally and will be removed by DPW staff.

Appendix A: Work Area Map

Appendix B: Planting Lists

Work Area 1 Species (Common) Scientific Category Count

Bottlebrush Buckeye Aesculus parviflora Understory Tree 30

Eastern redbud Cercis canadensis Understory Tree 25

Spicebush Lindera benzoin Shrub 20

Flowering dogwood Cornus florida Understory Tree 20

Tupelo Nyssa sylvatica Canopy Tree 25

Ninebark Physocarpus opulifolius Shrub 10

Swamp Rose Rosa palustris Shrub 10

Red osier dogwood Cornus sericea Shrub 10

Work Area 2 Species (Common) Scientific Category Count

Bottlebrush Buckeye Aesculus parviflora Understory Tree 30

Eastern redbud Cercis canadensis Understory Tree 10

Spicebush Lindera benzoin Shrub 25

Flowering dogwood Cornus florida Understory Tree 20

Tupelo Nyssa sylvatica Canopy Tree 25

Ninebark Physocarpus opulifolius Shrub 30

Swamp Rose Rosa palustris Shrub 20

Red osier dogwood Cornus sericea Shrub 30

Elderberry Sambucus canadensis Shrub 40

Black Chokeberry Aronia melanocarpa Shrub 40

Red Chokeberry Aronia arbutifolia Shrub 20

Pawpaw Asimina triloba Understory Tree 20

Serviceberry Amelanchier sp Shrub 30

Gray dogwood Cornus racemosa Shrub 20

American hazelnut Corylus americana Shrub 40

Eastern redcedar Juniperus virginiana Canopy Tree 20

Bayberry Myrica pensylvanica Shrub 20

Bladdernut Staphylea trifolia Shrub 25

Nannyberry Viburnum lentago Shrub 40

Kentucky Coffeetree Gymncladus dioicus Canopy Tree 10

Pitch pine Pinus rigida Canopy Tree 15

Baldcypress Taxodium distichum Canopy Tree 10

Highbush cranberry Viburnum trilobum Shrub 20

Swamp white oak Quercus bicolor Canopy Tree 10

Shagbark hickory Carya ovata Canopy Tree 10

Fragrant Sumac Rhus aromatica Shrub 20

Work Area 3

Bottlebrush Buckeye Aesculus parviflora Understory Tree 30

Eastern redbud Cercis canadensis Understory Tree 50

Spicebush Lindera benzoin Shrub 25

Flowering dogwood Cornus florida Understory Tree 20

Tupelo Nyssa sylvatica Canopy Tree 25

Ninebark Physocarpus opulifolius Shrub 30

Swamp Rose Rosa palustris Shrub 20

Red osier dogwood Cornus sericea Shrub 30

Elderberry Sambucus canadensis Shrub 30

Black Chokeberry Aronia melanocarpa Shrub 40

Red Chokeberry Aronia arbutifolia Shrub 10

Pawpaw Asimina triloba Understory Tree 20

Serviceberry Amelanchier sp Shrub 30

Gray dogwood Cornus racemosa Shrub 20

American hazelnut Corylus americana Shrub 30

Eastern redcedar Juniperus virginiana Canopy Tree 20

Bayberry Myrica pensylvanica Shrub 20

Bladdernut Staphylea trifolia Shrub 25

Nannyberry Viburnum lentago Shrub 30

Pitch pine Pinus rigida Canopy Tree 15

Baldcypress Taxodium distichum Canopy Tree 10

Highbush cranberry Viburnum trilobum Shrub 20

Swamp white oak Quercus bicolor Canopy Tree 20

Shagbark hickory Carya ovata Canopy Tree 10

Work Area 4

Bottlebrush Buckeye Aesculus parviflora Understory Tree 30

Eastern redbud Cercis canadensis Understory Tree 10

Spicebush Lindera benzoin Shrub 25

Flowering dogwood Cornus florida Understory Tree 20

Tupelo Nyssa sylvatica Canopy Tree 25

Ninebark Physocarpus opulifolius Shrub 30

Swamp Rose Rosa palustris Shrub 20

Red osier dogwood Cornus sericea Shrub 30

Elderberry Sambucus canadensis Shrub 40

Black Chokeberry Aronia melanocarpa Shrub 40

Red Chokeberry Aronia arbutifolia Shrub 20

Pawpaw Asimina triloba Understory Tree 20

Serviceberry Amelanchier sp Shrub 30

Gray dogwood Cornus racemosa Shrub 20

American hazelnut Corylus americana Shrub 40

Eastern redcedar Juniperus virginiana Canopy Tree 20

Bayberry Myrica pensylvanica Shrub 20

Bladdernut Staphylea trifolia Shrub 25

Nannyberry Viburnum lentago Shrub 40

Pitch pine Pinus rigida Canopy Tree 15

Baldcypress Taxodium distichum Canopy Tree 10

Bigleaf magnolia Magnolia macrophylla Canopy Tree 10

Highbush cranberry Viburnum trilobum Shrub 20

Hackberry Celtis occidentalis Canopy Tree 25

American sycamore Platanus occidentalis Canopy Tree 10

Swamp white oak Quercus bicolor Canopy Tree 20

Dawn redwood Metasequoia glyptostroboides Canopy Tree 5

Shagbark hickory Carya ovata Canopy Tree 10

Appendix C: Planting Diagrams Plants shall be installed in a semi- random pattern similar to the planting plan on the right, allowing for each plant to have a minimum of two feet of space from other new plants. Plants should be arranged to meet the overall stocking density with an average spacing corresponding to the planned stocking rate. Grid plantings are not permitted.