Attachment 06 Appendix 5 HAFB Landscape Standards 06 27 2017_Compressed.pdf

MACC Statement of Work 27 Sep 2023 Hanscom AFB, MA

Appendix #5

Hanscom AFB Landscape Standard

Symmes Maini & McKee Associates

Hanscom Air Force Base

June 27, 2017

Table of Contents

1. Introduction

2. Overview & Design Guideline Standards

3. Landscape Planting Concepts and Designs

3.1. General Building Landscape Concepts

3.2. Specific Building Landscape Designs

3.3. Roadway Edge Area Concepts

3.4. Tree Massing Area Concepts

3.5. Specific Meadow Mix Planting Designs

3.6. Monument Area Designs

4. Plant Material Schedules

5. Standard Planting Details

6. Specifications

7. Maintenance Guidelines

8. Specific Building Site Preparation

Landscape Standards

Hanscom AFB, MA

SMMA

1000 Massachusetts Avenue

Cambridge, MA 02138 www.smma.com

Introduction 1

Landscape Standards Hanscom Air Force Base, MA SECTION 1 | pg. 1

1 Introduction

1.1 Introduction

Hanscom Air Force Base and the 66th Air Base Group, Civil Engineering Directorate has developed this base Landscape Standard as a means to ensure consistent application of a landscape design approach at Hanscom Air Force Base. Hanscom Air Force Base seeks to provide an attractive, low-maintenance landscaping environment that promotes the appearance of the Base and provides a safe and secure environment for

Base residents, employees, and visitors.

These standards are intended to be applied to all types of projects regardless of scope, funding source or construction methodology with the ultimate goal of updating the base landscape over time. This standard, if applied consistently throughout the base will create the landscape environment that Hanscom seeks to develop.

The standards also include design recommendations for existing landscapes at buildings, monuments, and open spaces. The design recommendations identify both landscape removals along with proposed landscape which reflect the overall standards provided within this document.

Overview and Design Guideline

Standards

Landscape Standards Hanscom Air Force Base, MA SECTION 2 | pg. 1

2 Introduction: Overview and Design

Guideline Standards

2.1 Landscape Design Guideline Standards

The goal of Hanscom Air Force Base is to create an environment that provides for an attractive aesthetic, lower operation and maintenance costs, and to minimize impacts on the environment. These goals will be achieved over time by applying these

Landscape Standards to all aspects of projects completed at Hanscom AFB. These standards will be included as a reference on design projects at the base.

This standard is meant to supplement other criteria with which projects must comply, including the Unified Facilities Criteria (UFC), Air Force and DoD policies, requirements and directives. Included within these criteria is UFC 3-201-02 Landscape Architecture which provides a general framework for landscape design for military facilities. This landscape standard supplements UFC 3-201-02 with site specific standards.

Projects associated with buildings or located in proximity to existing buildings must comply with the provisions of Unified Facilities Criteria (UFC) 4-010-01 DoD Minimum

Antiterrorism Standards for Buildings. Of particular importance in the Landscape

Design is Standard 2 - Unobstructed Spaces – the concepts set forth in this standard demonstrate the intent to comply with the provisions of UFC 4-010-01 as this is a minimum requirement.

The landscaping will also require that water conservation be a major part of the design criteria. Shade and sun tolerance of the plants, as well as insect, disease and drought resistance have been taken into consideration in these guidelines. The planning and design of all landscaping shall assume that the planting will receive little or no maintenance after a one to two year establishment period.

2.1.1 Tree, Shrub and Groundcover Plantings

This Landscape Standard seeks to identify appropriate plant materials for use at

Hanscom AFB as well as the appropriate application of the landscape materials within particular areas of the base. The goal is to utilize tree, shrub and groundcover plantings to accentuate key areas of the base, including building entrances, monuments, and other features while reducing the operation and maintenance costs of these items.

Section Four of these landscape standards includes a listing of plant materials recommended for use at Hanscom Air Force Base. The list includes regional plant materials that require reduced maintenance within the region. Section Three of this standard includes recommended design concepts for the use of these materials at different locations within the base.

Landscape Standards Hanscom Air Force Base, MA SECTION 2 | pg. 2

2.1.2 Turf Area Plantings

Turf areas at Hanscom represent a significant element of the current landscape at the base. It is Hansom’s goal to reduce the quantity of manicured turf which requires higher levels of maintenance. The preferred design method for turf areas is to develop a hierarchy of turf types beginning with improved grounds near building entrances transitioning to naturalized/meadow areas transitioning to existing natural landscape/wooded areas. Historically, areas disturbed by building construction were re-established as lawn areas to the limits of the disturbance – this landscape standard identifies a standard that requires that the amount of improved grounds are more limited which will result in reduced maintenance for the base.

2.1.3 Existing Vegetation

Mature vegetation exists in many areas at Hanscom AFB. It is important to Hanscom

AFB that existing vegetation be protected to the maximum extent practical. Mature, healthy trees are to be protected unless feasible alternatives do not exist for the proposed work. Removal of mature, healthy trees must be approved by Hanscom AFB.

2.1.4 Maintenance

A major goal of Hanscom Air Force Base is to reduce the time and cost associated with the maintenance of the landscape at Hanscom AFB. Maintenance efficiency can be achieved through thoughtful design including plant selection, reduction of turf areas and the use of naturalized native turf.

Landscape Planting Concepts and Designs

Landscape Standards Hanscom Air Force Base, MA SECTION 3 | pg. 1

3 Landscape Planting Concepts and

Designs

3.0 Landscape Design Concepts

Landscape design concepts have been developed to demonstrate planting options at various building types, open space areas and monuments. Each concept is unique, demonstrating a hierarchy of planting types, layout and extent to visually convey the building entrance and relative function. These concepts were developed to guide future planting efforts of newly developed facilities and to guide the redevelopment of plantings at the existing facilities.

Plating types as indicated in the following plans refer to the following guidelines:

TYPE A PLANTINGS: Plants shall not exceed 6” in height and shall be comprised of a combination of groundcovers, perennials and annuals. Provide a variety of material which shall have year round interest through color, texture and density.

TYPE B PLANTINGS: Plants shall not exceed 6” in height and shall be comprised of a combination of groundcovers. Provide a variety of material which shall have year round interest through color, texture and density.

TYPE C PLANTINGS: Plants shall be between 12” and 18” average height comprised of a combination of evergreen and deciduous shrubs. Provide a variety of material which shall have year round interest through color, texture and density.

TYPE D PLANTINGS: Plants shall be between 18” and maximum of 36” average height comprised of a combination of evergreen and deciduous shrubs. Provide a variety of material which shall have year round interest through color, texture and density.

3.1 General Building Landscape Concepts

3.1.1 DESTINATION BUILDINGS

Destination buildings are highly utilized buildings with a frequency of visitors from off-base. They require the highest level of plantings conveying there importance and providing a visually pleasing environment while conveying the primary entrance to the facility.

3.1.2 OPERATION BUILDINGS

Operation buildings are facilities used primarily by on-base personnel requiring a second level of plantings while providing a visually pleasing environment and conveying the primary entrance to the facility.

3.1.3 Industrial Buildings

Landscape Standards Hanscom Air Force Base, MA SECTION 3 | pg. 2

Plantings at the industrial buildings are reduced in overall scope while conveying the primary entrance and developing planting a continuity to the overall Base.

3.2 Specific Building Landscape Designs

Specific building landscape concepts were developed for selected buildings based on the general building landscape concepts. Each proposed building planting has a distinct visual identity while adhering to a unifying Base wide planting design.

3.3 Roadway Edge Area Concepts

The roadway edge areas propose to introduce naturalized plantings to reduce maintenance requirements and provide planting and environmental variety to the Base.

Lawn turf is to be established between first 5’ to 10’ off the curb and the balance is to be seeded with native grasses incorporated into a meadow mix seed mixture

3.4 Tree massing Area Concepts

The tree massing areas propose to introduce naturalized plantings to reduce maintenance requirements and provide planting and environmental variety to the Base.

A meadow mix seed mixture is to be established within groups of selected trees to merge them within a planting island. The balance would remain as a lawn turf.

3.5 Specific Meadow Mix Planting Designs

Specific meadow mix planting designs were developed for selected areas on the base.

Each proposed area planting has a distinct visual identity while adhering to a unifying

Base wide planting design.

3.6 Monument Area Designs

Plantings in these areas compliment the monuments and provide a focus, both while driving in a vehicle and as pedestrian walking the grounds. Strong geometric layouts emphasize the importance of the monuments with their plantings.

HANSCOM AIR FORCE BASE LANDSCAPE DESIGN STANDARDS

3.2.01 BUILDING 1305

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

TYPE 'B'

TYPE 'C'

3.2.02 BUILDING 1515

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.03 BUILDING 1530

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.04 BUILDING 1531

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.05 BUILDING 1534

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.06 BUILDING 1535

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.07 BUILDING 1538

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.08 BUILDING 1540

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.09 BUILDING 1543

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.10 BUILDING 1603

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.11 BUILDING 1604

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.12 BUILDING 1605

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.13 BUILDING 1606

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.14 BUILDING 1607

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.15 BUILDING 1612

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.16 BUILDING 1614

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.17 BUILDING 1614

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.18 BUILDING 1614

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.19 BUILDING 1618

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.20 BUILDING 1624

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.21 BUILDING 1630

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.22 BUILDING 1721

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.23 BUILDING 1725

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.2.24 BUILDING 1900

NOTE:

BUILDING MAINTENANCE

STRIP TYPICAL - ALL

AROUND BUILDING

LEGEND

TYPE 'A'

3.5.1 SPECIFIC MEADOW MIX PLANTING

NOTE:

LAWN TURF STRIP TO BE

5'-0" TO 10'-0" FEET IN

WIDTH ADJACENT TO

ROADWAYS - TYPICAL.

LEGEND

MEADOW MIX

3.5.2 SPECIFIC MEADOW MIX PLANTING

NOTE:

LAWN TURF STRIP TO BE

5'-0" TO 10'-0" FEET IN

WIDTH ADJACENT TO

ROADWAYS - TYPICAL.

3.5.3 SPECIFIC MEADOW MIX PLANTING

NOTE:

LAWN TURF STRIP TO BE

5'-0" TO 10'-0" FEET IN

WIDTH ADJACENT TO

ROADWAYS - TYPICAL.

3.5.4 SPECIFIC MEADOW MIX PLANTING

NOTE:

LAWN TURF STRIP TO BE

5'-0" TO 10'-0" FEET IN

WIDTH ADJACENT TO

ROADWAYS - TYPICAL.

3.5.5 SPECIFIC MEADOW MIX PLANTING

NOTE:

LAWN TURF STRIP TO BE

5'-0" TO 10'-0" FEET IN

WIDTH ADJACENT TO

ROADWAYS - TYPICAL.

3.5.6 SPECIFIC MEADOW MIX PLANTING

NOTE:

LAWN TURF STRIP TO BE

5'-0" TO 10'-0" FEET IN

WIDTH ADJACENT TO

ROADWAYS - TYPICAL.

3.5.7 SPECIFIC MEADOW MIX PLANTING

NOTE:

LAWN TURF STRIP TO BE

5'-0" TO 10'-0" FEET IN

WIDTH ADJACENT TO

ROADWAYS - TYPICAL.

Plant Material Schedules 4

Landscape Standards Hanscom Air Force Base, MA SECTION 4 | pg. 1

4 Plant Material Schedules

4.1 Recommended Plant Material

Large Tree

Acer rubrum Red Maple > 50 ft 30 - 50 ft 2" caliper

Acer saccharum Sugar Maple > 50 ft 30 - 60 ft 2" caliper

Betula nigra 'Heritage' River Birch > 50 ft 40 - 60 ft 2" caliper

Carpinus betulus European Hornbeam 35 - 50 ft 20 - 30 ft 2" caliper

Fagus grandifolia American Beech > 50 ft > 50 ft 2" caliper

Fraxinus pennsylvanica 'Summit' Green Ash > 50 ft > 50 ft 2" caliper

Ginkgo biloba (male only) Maidenhair Tree > 50 ft 30 -40 ft 2" caliper

Gleditsia triacanthos var. inermis Thornless Honeylocust 35 - 50 ft 35 - 50 ft 2" caliper

Juniperus virginiana ‘Emerald Sentinel’ Eastern Redcedar 10 - 20 ft 8 -10 ft 4 - 5 ft

Larix laricina American Larch > 50 ft 15 - 30 ft 2" caliper

Nyssa sylvatica Black Tupelo 35 - 50 ft 20 -30 ft 2" caliper

Picea abies Norway Spruce > 50 ft 25 - 30 ft 3 - 4 ft

Picea glauca White Spruce > 50 ft 10 - 20 ft 4 - 5 ft

Pinus strobus White Pine > 50 ft 20 - 40 ft 2 - 3 ft

Quercus palustris Pin Oak > 50 ft 40 - 60 ft 2" caliper

Quercus rubra Red Oak > 50 ft > 50 ft 3 - 4 ft

Thuja occidentalis ‘Techny’ Eastern Arborvitae 10 - 20 ft 6 - 10 ft 2 - 3 ft

Botanical Name Common Name Mature Height Mature

Width

Minimum

Size

Small Tree

Acer ginnala Amur Maple 10 - 20 ft 10 - 20 ft

Amelanchier × grandiflora 'Autumn Brilliance' Apple Serviceberry 15 - 25 ft 15 - 25 ft 2 - 3 ft

Cornus kousa Kousa Dogwood 15 - 25 ft 15 - 25 ft 5 -6 ft

Crataegus phaenopyrum Washington Hawthorn 25 - 30 ft 25 - 30 ft

Magnolia x loebneri ‘Merrill’ Loebner Magnolia 20 - 35 ft 20 - 35 ft 5 - 6 ft malus sargentii Sargent Crabapple 6 - 8 ft 10 - 15 ft 5 - 6 ft

Malus ‘Donald Wyman’ Flowring Crabapple 10 - 20 ft 17 - 22 ft 5 - 6 ft

Prunus sargentii Sargent Cherry 20 - 35 ft 20 - 35 ft 2" caliper

Stewartia pseudocamellia Japanese Stewartia 20 - 35 ft 8 - 25 ft 3 - 4 ft

Syringa reticulata Japanese Tree Lilac 20 - 35 ft 15 - 20 ft 2" caliper

Botanical Name Common Name Mature Height Mature

Width

Minimum

Size

Landscape Standards Hanscom Air Force Base, MA SECTION 4 | pg. 2

4.2 Recommended Sod Mixture

Seed Varity Proportion by Weight

Tall Fescue

(Minimum 3 varieties)

70%

Kentucky Bluegrass

(Minimum 2 varieties)

20%

Perennial Rye Grass

(Minimum 2 varieties)

10%

Shrub

Clethra alnifolia 'Campacta' Summersweet 3 - 4 ft 3 - 4 ft 3 -4 ft

Fothergilla gardenii Dwarf Forthergilla 1- 3 ft 2 - 4 ft 2 - 3 ft

Ilex glabra ‘Compacta’ Inkberry 3 - 4 ft 4 - 6 ft 2 - 3 ft

Ilex verticillata ‘Red Sprite’ Red Sprite Winterberry 2 - 3 ft 2 - 3 ft 2 - 3 ft

Itea virginica ‘Little Henry’ Sweetspire 1- 2 ft 2 - 3 ft 2 - 3 ft

Kalmia latifolia Mountain Laurel 10 - 20 ft 5 - 15 ft 2 - 3 ft

Myrica pensylvanica Northern Bayberry 5 - 10 ft 5 - 10 ft 2 - 3 ft

Viburnum × carlcephalum 'Cayuga' Compact Mayflower Viburnum 4 - 8 ft 5 - 10 ft 2 - 3 ft

Botanical Name Common Name Mature Height Mature

Width

Minimum

Size

Ground Cover

Arctostaphylos uva-ursi Common Bearberry 6 - 12 in 3 - 6 ft #1 container

Cotoneaster dammeri 'Streibs Findling' Bearberry Cotoneaster 6 - 9 in 3 - 6 ft #3 container

Juniperus horizontalis ‘Blue Rug’ Blue Rug Juniper 3 - 6 in 6 - 8 ft #3 container pachysandra terminalis Japanese Spurge 6 - 12 in 1 - 2 ft #3 container

Vaccinium angustifolium Lowbush Blueberry 6 - 24 in 1 - 2 ft #1 container

Vinca minor Periwinkle 3 - 6 in 1 - 2 ft #1 container

Botanical Name Common Name Mature Height Mature

Width

Minimum

Size

Landscape Standards Hanscom Air Force Base, MA SECTION 4 | pg. 3

4.3 Recommended Lawn Seed Mixture

Seed Varity Proportion by Weight

Germination

Minimum

Purity

Minimum

Tall Fescue

(Minimum 3 varieties)

33% 90% 95%

Kentucky Bluegrass

(Minimum 2 varieties)

33% 90% 95%

Perennial Rye Grass

(Minimum 2 varieties)

33% 90% 95%

4.4 Recommended Meadow Mix Seed Mixture

Botanical Name Common Name

Elymus canadensis Canada Wild Rye

Schizachyrium scoparium Little Bluestem

Festuca rubra Creeping Red Fescue

Andropogon gerardii Big Bluestem

Sorghastrum nutans Indian Grass

Chamaecrista fasciculata Partridge Pea

Panicum virgatum Switch Grass

Rhus typhina Staghorn Sumac

Cornus amomum Silky Dogwood

Cornus racemosa Grey Dogwood

Asclepias syriaca Common Milkweed

Zizia aurea Golden Alexanders

Desmodium canadense Showy Tick Trefoil

Lespedeza capitata Bush Clover/Roundhead Lespedeza

Heliopsis helianthoides Ox Eye Sunflower

Monarda fistulosa Wild Bergamot

Rudbeckia hirta Black Eyed Susan

Aster laevis Smooth Blue Aster

Euthamia graminifolia Grass Leaved Goldenrod

Solidago juncea Early Goldenrod

Schizachyrium scoparium Little Bluestem

Festuca rubra Creeping Red Fescue

Landscape Standards Hanscom Air Force Base, MA SECTION 4 | pg. 4

Sorghastrum nutans Indian Grass

Chamaecrista fasciculata Partridge Pea

Elymus canadensis Canada Wild Rye

Elymus virginicus Virginia Wild Rye

Desmodium canadense Showy Tick Trefoil

Penstemon digitalis Beard Tongue

Rudbeckia hirta Black Eyed Susan

Coreopsis lanceolata Lance Leaved Coreopsis

Heliopsis helianthoides Ox Eye Sunflower

Verbena hastata Blue Vervain

Asclepias syriaca Common Milkweed

Helenium autumnale Common Sneezeweed

Monarda fistulosa Wild Bergamot

Zizia aurea Golden Alexanders

Aster laevis Smooth Blue Aster

Aster novae-angliae New England Aster

Eupatorium maculatum Spotted Joe Pye Weed

Eupatorium purpureum Purple Joe Pye Weed

Liatris spicata Spiked Gayfeather/Marsh Blazing Star

Tradescantia ohiensis Ohio Spiderwort

Baptisia australis Wild Blue False Indigo

Euthamia graminifolia Grass Leaved Goldenrod

Solidago juncea Early Goldenrod

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Arctostaphylos uva-uris (Common Bearberry)

Contoneaster dammeri ‘Streibs Findling’ (Bearberry Cotoneaster)

Juniperus horizontalis ‘Blue Ring’ (Blue Rug Juniper)

Mature Height

6-12 inches

Mature Width

3-6 feet

Water Requirement

Dry to medium

Sun

Full sun to part shade

Tolerates

Erosion

Culture

Grow in acidic, dry to medium, well-drained, sandy or gritty soils in full sun.

Tolerates light shade. Usually grows well in poor infertile soils. Plants should not be fertilized. Drought tolerant once established. Likes exposed open sites.

Maintenance

Low

6-9 inches

3-6 feet

Water Requirement

Medium

Sun

Full sun

Tolerates

Drought, erosion

Culture

Best grown in moist, loamy, sharply-drained soils in full sun to part shade. Requires little supplemental watering once established.

Prune to shape as needed (planting spreads and often becomes ragged over time).

Maintenance

Medium

3-6 inches

6-8 inches

Water Requirement

Medium

Sun

Full sun

Tolerates

Deer,drought, erosion, dry soil, shallowrocky soil, air pollution

Culture

Grow in average, medium moisture, well drained soils in full sun. Adapts to a wide range of soils, but prefers a dryish, sandy soil. Tolerates hot, relatively dry growing conditions, somewhat poor soils and many city air pollutants. Intolerant of wet soils.

Maintenance

Low

Ground Cover

p. 1

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Pachysandra terminalis (Japanese Spurge)

Vaccinium angustifolium (Lowbush Blueberry)

Vinca minor (Periwinkle)

6-12 inches

1-2 feet

Water Requirement

Medium

Sun

Part shade to full shade

Tolerates

Rabbit,deer, drought, heavy shade,erosion, clay soil, dry soil

Culture Best grown in organically rich, medium moisture, well-drained soils in part shade to full shade. Foliage tends to bleach when grown in too much sun. Plants thrive in sun dappled shade under large trees. For use as a ground cover, set starter plants 6-12” apart. Plants will spread by rhizomes to form large colonies. Avoid overhead watering and thin plants periodically to promote good air circulation.

Maintenance

6-24 inches

Water Requirement

Medium to wet

Mature Width

1-2 feet

Sun

Full sun to part shade

Tolerates

N/A

Culture

Best grown in acidic, peaty, organically rich, medium to wet, well-drained soils in full sun to part shade. Shallow, fibrous roots need constant moisture and good drainage. Plants appreciate a good organic mulch. Although blueberries are self-fertile, cross-pollination produces the best fruit crop.

Maintenance

3-6 inches

1-2 feet

Water Requirement

Dry to medium

Sun

Full sun to part shade

Tolerates

Deer,drought, erosion, dry soil, shallow-rocky soil

Culture

Easily grown in average, dry to medium, well drained soil in full sun to part shade.

Tolerates close to full shade. Prefers moist, humusy soils in part shade. Plant 8” apart for quick cover of smaller areas.

Maintenance

Medium

Ground Cover

p. 2

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Clethra alnifolia ‘Compacta’ (Summersweet)

Fothergilla gardenii (Dwarf Forthergilla)

Ilex glabra ‘Compacta’ (Inkberry)

3-4 feet

3-4 feet

Water Requirement

Medium to wet

Sun

Full sun to part shade

Tolerates

Heavy shade, erosion, clay soil, wet soil

Culture

Easily grown in average, medium to wet soils in full sun to part shade. Prefers part shade and consistently moist, acidic, sandy soils. Soils should not be allowed to dry out. Tolerates clay soils.

Tolerates full shade. Promptly remove root suckers unless naturalized look is desired.

Maintenance

1-3 feet

2-4 feet

Water Requirement

Medium

Sun

Full sun to part shade

Tolerates

Wet soil

Culture

Best grown in moist, acidic, organically rich, well-drained soils in full sun to part shade. Best flowers occur in full sun, but plants appreciate some afternoon shade in hot and dry summer climates.

Performs well in sandy loams. Avoid heavy soils. Plants may spread by root suckers to form colonies if suckers are not promptly removed.

Maintenance

3-4 feet

4-6 feet

Water Requirement

Medium to wet

Sun

Full sun to part shade

Tolerates

Rabbit,deer, erosion, wet soil, air pollution

Culture Easily grown in average, medium to wet soils in full sun to part shade. Adaptable to both light and heavy soils. Tolerates wet soils. Prefers rich, consistently moist, acidic soils in full sun. Good shade tolerance, however. Avoid neutral to alkaline soils. Inkberries are dioecious (separate male and female plants).

Maintenance

Low

Shrubs

p. 3

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Ilex verticillata ‘ Red Sprite’ (Red Sprite Winterberry)

Itea virginica ‘Little Henry’ (Sweetspire)

Kalmia latifolia (Mountain Laurel)

2-3 feet

2-3 feet

Water Requirement

Medium to wet

Sun

Full sun to part shade

Tolerates

Erosion, clay soil, wet soil, air pollution

Culture Easily grown in average, acidic, medium to wet soils in full sun to part shade.

Adaptable to both light and heavy soils, but prefers moist, acidic, organic loams.

Good tolerance for poorly drained soils including wet boggy or swampy conditions. Winterberries are dioecious (separate male and female plants).

Maintenance

1-2 feet

2-3 feet

Water Requirement

Medium to wet

Sun

Full sun to part shade

Tolerates

Heavy shade, erosion, clay soil, wet soil

Culture

Easily grown in average, medium to wet, well-drained soil in full sun to part shade. Adaptable to shade. Prefers moist, humusy soils, but tolerates a wide range of soil conditions. Can form dense colonies by root suckering if left unchecked.

Maintenance

10-20 feet

5-15 feet

Water Requirement

Medium

Sun

Part Shade

Tolerates

Rabbit, deer

Culture Best grown in cool, moist, rich, acidic, humusy, well-drained soils in part shade. Mulch to retain moisture and keep root zones cool. Plants tolerate from a wide range of light conditions (full sun to full shade, but are best in part shade (morning sun with early to mid-afternoon shade).

Maintenance

Medium

p. 4

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Myrica Pensylvanica (Northern Bayberry)

Viburnum x carlcephalum ‘Cayuga’ (Compact Mayflower Vibur)

5-10 feet

5-10 feet

Sun

Full sun to part shade

Tolerates

Drought, erosion, wet soil

Maintenance

4-8 feet

5-10 feet

Sun

Full sun to part shade

Tolerates

Drought

Culture

Easily grown in average, medium, well drained soil in full sun to part shade.

Prefers moist loams, but tolerates a wide range of soils and has good drought tolerance. Prune as needed immediately after flowering, however pruning off spent flowers will eliminate summer fruit display.

Maintenance

Low

Culture Easily grown in average, dry to medium, well-drained soils in full sun to part shade. Prefers moist, peaty or sandy, acidic soils, but tolerates a wide range of soils and growing conditions, including poor soils, wet soils, drought, high winds and salt spray (road salt conditions). Groupings of plants need a least one male plant to facilitate pollination of the female plants and subsequent fruit set.

p. 5

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Acer ginnala (Amur Maple)

Amelanchier x grandiflora ‘Autumn Brillian’ (Apple Serviceberry)

Cornus kousa ( Kousa Dogwood)

10 - 20 feet

10 - 20 feet

Water Requirement

Medium

Sun

Full sun to part shade

Tolerates

Drought, clay soil

Culture

Easily grown in moist, organically rich, well-drained soils in full sun to part shade.

Performs well in full sun or bright, sun-dappled locations. Some tolerance for drought. Best performance occurs in areas with cool summer climates. Transplants easily.

Maintenance

15 - 25 feet

Medium

Mature Width

15 -25 feet

Sun

Full sun to part shade

Tolerates

N/A

Culture

Easily grown in average, medium moisture, well-drained soil in full sun to part shade.

Tolerant of a somewhat wide range of soils, but prefers moist, well-drained loams. Root suckers are common, and if not removed, will result in a shrubby growth habit for the plant.

Maintenance

15 - 25 feet

15 -25 feet

Water Requirement

Medium

Sun

Full sun to part shade

Tolerates

Deer

Culture

Best grown in humusy, organically rich, medium moisture, acidic to neutral, well-drained soils in full sun to part shade.

Performs well in sandy loams. Appreciates regular moisture during hot summers.

Maintenance

Low

Small Trees

p. 6

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Crataegus phaenopyrum (Washington Hawthorn)

Magnolia x loebneri ‘Merrill’ (Loebner Magnolia)

Malus sargentii (Sargent Crabapple)

25 - 30 feet

25 - 30 feet

Water Requirement

Medium

Sun

Full sun

Tolerates

Air pollution

Culture

Best grown in moist but well-drained soils in full sun. Tolerates light shade.

Maintenance

20 - 35 feet

Medium

Mature Width

20 - 35 feet

Sun

Full sun to part shade

Tolerates

N/A

Culture Best grown in moist, organically rich, well-drained loams in full sun to part shade.

Generally intolerant of soil extremes (dry or wet). Intolerant of most urban pollutants. May take 3-4 years before first blooms appear. Best sited in a protected location, because early spring frosts can damage flowers.‘Merrill’ is noted for its good winter hardiness.

Maintenance

6 - 8 feet

10-15 feet

Water Requirement

Medium

Sun

Full sun

Tolerates

Clay soil, air polution

Culture Best grown in medium moisture, well-drained, acidic loams in full sun. Adapts to a wide range of soils. Established trees have some drought tolerance. Although some flowers may be lost, it is best to prune this tree as needed in late winter. Spring pruning should be avoided as it produces fresh, open cuts where fireblight bacterium can enter.

Maintenance

Low

p. 7

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Malus ‘ Donald Wyman’ (Flowring Crabapple)

Prunus sargentii (Sargent Cherry)

Stewartia pseudocamellia (Japanese Stewartia)

17 - 22 feet

Water Requirement

Medium

Sun

Full sun

Tolerates

Air pollution

Culture Best grown in medium moisture, well-drained, acidic loams in full sun. Adapts to a wide range of soils. Established trees have some drought tolerance. Although some flowers may be lost, it is best to prune this tree as needed in late winter. Spring pruning should be avoided as it produces fresh, open cuts where fireblight bacterium can enter.

Maintenance

Medium

Mature Width

20 - 35 feet

Sun

Full sun to part shade

Tolerates

N/A

Culture

Grow in average, medium moisture, well-drained soils in full sun to part shade. Best in full sun. Somewhat intolerant of high heat and humidity.

Maintenance

8 - 25 feet

Water Requirement

Medium

Sun

Full sun to part shade

Tolerates

N/A

Culture

Best in moist, organically rich, well-drained soils in full sun to part shade.

Maintenance

Low

p. 8

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Syringa reticulata (Japanese Tree Lilac) Mature Height

15 - 20 feet

Water Requirement

Medium

Sun

Full sun

Tolerates

Deer, clay soil

Culture Easily grown in average, medium moisture, well-drained soil in full sun. Tolerates light shade, but best bloom occurs in full sun.

Prefers organically rich, moist, slightly acidic soils with good drainage. Needs good air circulation. Tolerates urban conditions well. Prune as needed immediately after flowering.

Maintenance

Low

p. 9

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 p. 10

Acer rubrum ( Red Maple)

Acer saccharum ( Sugar Maple)

Betula nigra ‘Heritrage’ (River Birch)

> 50 feet

30 - 50 feet

Water Requirement

Medium to wet

Sun

Full sun to part shade

Tolerates

Wet soil, air pollution

Culture

Easily grown in average, medium to wet, well-drained soil in full sun to part shade. Tolerant of a wide range of soils, but prefers moist, slightly acid conditions. Very cold hardy.

Maintenance

>50 Feet

30 - 60 feet

Water Requirement

Medium

Sun

Full sun to part shade

Tolerates

Heavy shade

Culture

Easily grown in average, medium moisture, well-drained soil in full sun to part shade. Best in fertile, slightly acidic, moist soils in full sun. Grows poorly in compacted, poorly drained soils. Intolerant of road salt. Generally intolerant of urban pollution.

Maintenance

>50 Feet

40 - 60 feet

Water Requirement

Medium to wet

Sun

Full sun to part shade

Tolerates

Deer, drought, clay soil, wet soil, air pollution

Culture Easily grown average, medium to wet soils in full sun to part shade. River birch is perhaps the most culturally adaptable and heat tolerant of the birches. Prefers moist, acidic, fertile soils including semi-aquatic conditions, but also tolerates drier soils. Consider using soaker hoses and bark mulches to keep the root zones cool and moist.

Maintenance

Large Trees

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Fagus grandifolia (American Beech)

Fraxinus pennsylvanica ‘Summit’ ( Green Ash)

>50 feet

>50 feet

Water Requirement

Medium

Sun

Full sun to part shade

Tolerates

Air pollution

Culture Easily grown in medium moisture, well-drained soils in full sun to part shade.

Needs little pruning when grown as a tree, but responds well to hard pruning if grown as a hedge. Best pruned during the period of late summer to mid-winter to avoid significant bleeding.

Maintenance

35 - 50 feet

20-30 feet

Water Requirement

Medium

Sun

Full sun to part shade

Tolerates

Deer, black walnut

Culture

Best grown in deep, rich, moist but well-drained soils in full sun to part shade. Intolerant of wet, poorly drained soils. Difficult to transplant and does not always grow well in urban settings.

Maintenance

>50 feet

Water Requirement

Medium

Sun

Full sun

Tolerates

Deer, air pollution

Culture

Easily grown in average, medium wet, well-drained soils in full sun. Prefers consistently moist, humusy loams, but established trees demonstrate adaptibility to a wide range of soils and growing conditions. Female trees produce abundant seed crops in some years.

Maintenance

Medium

Carpinus betulus (European Hornbeam)

p. 11

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Ginkgo biloba (male only) (Maidenhair Tree) Mature Height

30 - 40 feet

Sun

Full sun

Tolerates

Deer, clay soil, air pollution

Culture

Easily grown in average, medium moisture soil. Prefers moist sandy, well drained soil. Tolerates a wide variety of soil conditions including both alkaline and acidic soil and compacted soils.

Also tolerates saline conditions, air pollution and heat

Maintenance

Low

Water Requirement

Gleditsia Triacanthos var. inermis ( Thornless Honeylocust) Mature Height

35 - 50 feet

Sun

Full sun

Tolerates

Deer, drought, clay soil, black walnut, air pollution

Culture

Best grown in organically rich, moist, well-drained soils in full sun. Tolerant of a wide range of soils. Also tolerant of wind, high summer heat, drought and saline conditions.

Maintenance

Medium

Water Requirement

Juniperus virginiana ‘Emerald Sentinel’ ( Eastern Redcedar) Mature Height

8 - 10 feet

Sun

Full sun

Tolerates

Deer, Drought, Erosion, Dry Soil, Shallow-Rocky Soil, Black Walnut, Air Pollution

Culture

Easily grown in average, dry to moist, well-drained soils in full sun. Tolerates a wide range of soils and growing conditions, from swamps to dry rocky glades. Prefers moist soils but is intolerant of constantly wet soils. It has the best drought resistance of any conifer native to the eastern U.S.

Maintenance

Low

Water Requirement

Dry to medium

p. 12

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Larix laricina (American Larch)

Nyssa sylvatica ( Black Tupelo)

Picea abies (Norway Spruce)

15 - 30 feet

Water Requirement

Medium

Sun

Full sun

Tolerates

N/A

Culture Best grown in moist, acidic, well-drained soils in full sun. Tolerates some light shade. Intolerant of full shade, dry soils and most city pollutants. Best performance is in temperatures with cool summers and cold winters.

Maintenance

20 -30 feet

Water Requirement

Medium to wet

Sun

Full sun to part shade

Tolerates

Clay soil, wet soil

Culture Easily grown in average, medium to wet soils in full sun to part shade. Prefers moist, acidic soils. Tolerates poorly-drained soils and can grow in standing water. On the other end of the spectrum, tolerates some drought and adapts to some dryish soils.

Female trees need a male pollinator to set fruit.

Maintenance

25 - 30 feet

Water Requirement

Medium

Sun

Full sun

Tolerates

Deer, air pollution

Culture

Easily grown in average, acidic, evenly moist, well-drained soils in full sun.

Performs well in rich sandy soils. Prefers cool summer climates. Established plants have some tolerance for dryish soils.

Maintenance

Low

p. 13

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Picea glauca ( White Spruce )

Pinus strobus (White Pine)

Quercus palustris ( Pin Oak)

10 - 20 feet

Water Requirement

Medium

Sun

Full sun

Tolerates

Deer

Culture Best grown in moist, well-drained soils in full sun. Tolerates some light shade. Best performance is in cold winter climates with cool summers. Site in areas with good air circulation to help rid the dense foliage of moisture. Somewhat intolerant of urban stresses such as air pollutants and salt spray. Plants will struggle in the high heat.

Maintenance

Medium

Mature Width

20 -40 feet

Sun

Full sun to part shade

Tolerates

Rabbit, deer

Culture

Easily grown in average, medium moisture, well-drained soil in full sun. Prefers full sun, fertile soils and cool, humid climates.

Tolerant of a wide range of soil conditions.

Intolerant of many air pollutants such as sulfur dioxide and ozone.

Maintenance

40 - 60 feet

Water Requirement

Medium to wet

Sun

Full sun

Tolerates

Wet soil

Culture

Easily grown in average, medium to wet, acidic soils in full sun. Prefers moist loams.

Tolerates poorly drained soils. Tolerates some flooding. May take up to 15-20 years for this tree to bear a first crop of acorns.

Maintenance

Medium

p. 14

Landscape Standards • Hanscom Air Force Base, MA • SECTION 4 Landscape Standards • Hanscom Air Force Base, MA • SECTION 4

Quercus rubra ( Red Oak)

Thuja occidentalis ‘Techny’ (Eastern Arborvitae)

>50 feet

Water Requirement

Dry to medium

Sun

Full sun

Tolerates

Drought, dry soil, black walnut, air pollution

Culture

Easily grown in average, dry to medium moisture, acidic soil in full sun. Prefers fertile, sandy, finely-textured soils with good drainage.

Maintenance

10-20 feet

Medium

Mature Width

6-10 feet

Sun

Full sun to part shade

Tolerates

Clay soil, black walnut, air pollution

Culture Grow in average, medium moisture, well-drained soils in full sun to part shade.

Somewhat wide range of soil tolerance, but prefers moist, neutral to alkaline, well-drained loams. Intolerant of dry conditions. Best in full sun, but generally appreciates some light afternoon shade in hot summer climates. Avoid full shade where foliage density will substantially decrease. exposed, windy sites.

Maintenance

Low

p. 15

Standard Planting Details 5

Specifications 6

Landscape Standards Hanscom Air Force Base, MA SECTION 6.1 | pg. 1

6 Specifications

6.1 Planting Soils

Topsoil shall be natural, fertile, friable soil, without admixture of subsoil, clean and reasonably free from clay, lumps, stones, stumps, roots or similar materials and free from debris or other objects which might be a hindrance to planting operations, and as follows:

1. Utilize previously stripped and stockpiled topsoil prior to obtaining additional topsoil from off- site sources. If the quantity of stockpiled topsoil is insufficient, provide additional topsoil as required to complete the landscape work.

a. All on-site stockpiled topsoil shall be screened and made to comply with the specifications and per laboratory recommendations prior to use.

2. Obtain topsoil from local sources and are from naturally, well drained sites where topsoil occurs at a depth of not less than 4 inches.

3. Texture: Topsoil shall be a “sandy loam” as determined by mechanical analysis and based on the “USDA Textural

Classification” and it shall conform to the following grain size distribution

U.S. Standard Sieve Minimum Maximum

5/8” 100

#10 81 93

#18 66 87

#35 52 82

#60 35 66

#140 12 34

#300 5 18

Silt 4 13

Clay 1 5

4. pH value: Portion of the sample that passes a ¼ inch sieve shall fall within a range of pH 5.5 to pH 7.0.

5. Organic Matter:

a. Portion of the sample which passes ¼ inch sieve shall contain not less than 5 percent nor more than 7 percent organic matter, as determined by the wet combustion method on a sample directed at 105°C.

To adjust organic matter content, the soil may be amended, prior to site delivery, by the addition of composted humus. Use of organic amendments is acceptable only if random soil sampling indicates thorough incorporation.

Landscape Standards Hanscom Air Force Base, MA SECTION 6.2 | pg. 1

6.2 Planting Specifications

1.01 SUMMARY

A. Provide all labor, materials, equipment, services, and perform all operations necessary to complete the work of this section as indicated within the drawings and specified herein which shall include, but is not limited to, the following:

1. Selection, procurement and planting of all plant materials indicated within the Drawings including:

a. Trees.

b. Shrubs.

c. Groundcover.

d. Perennials and annuals.

2. Planting soils.

3. Soil amendments.

4. Maintenance.

5. Warranty.

B. Related Sections:

1. Section "Turf and Grasses" for turf.

1.02 REFERENCES

A. American Association of Nurserymen (AAN): ANSI Z 260.1 “American

Standard for Nursery Stock.”

B. Bailey Hortorium of Cornell University, Hortus Third, A Concise Dictionary of Plants Cultivated in the United States and Canada (for nomenclature).

C. American National Standards Association and National Arborist

Association, Inc.: ANSI/ANAA A300 “Tree, Shrub and Other Woody Plant

Maintenance - Standard Practices.”

1.03 DEFINITIONS

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

B. Balled and Burlapped Stock: Plants dug with firm, natural balls of earth in which they were grown, with ball size not less than 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.

Landscape Standards Hanscom Air Force Base, MA SECTION 6.2 | pg. 2

C. 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.

D. Finish Grade: Elevation of finished surface of planting soil.

E. Planting Soil: Standardized topsoil; existing, native surface topsoil;

existing, in-place surface soil; imported topsoil; or manufactured topsoil that is modified with soil amendments and perhaps fertilizers to produce a soil mixture best for plant growth.

F. 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.

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

1.04 SUBMITTALS

A. Soil Test Reports:

1. For existing native surface topsoil.

2. Imported or manufactured topsoil.

B. Qualification Data: For qualified landscape Installer. Include list of similar projects completed by Installer demonstrating Installer's capabilities and experience. Include project names, addresses, and year completed, and include names and addresses of owners' contact persons.

C. Product Certificates: For each type of manufactured product, from manufacturer, and complying with the following:

1. Manufacturer's certified analysis of standard products.

2. Analysis of other materials by a recognized laboratory made according to methods established by the Association of Official

Analytical Chemists, where applicable.

D. Product Data: For each type of product indicated to be installed:

1. Fertilizers

2. Inorganic soil amendments

3. Organic soil amendments

4. Anti-dessicant.

E. Maintenance Instructions: Recommended procedures to be established by Owner for maintenance of plants during a calendar year. Submit before start of required maintenance periods.

F. Submit samples of the following materials for approval by the Base Civil

Engineer prior to ordering or delivering those items to the site:

1. Bark Mulch: 1 quart bag with label indicating source of supply.

Landscape Standards Hanscom Air Force Base, MA SECTION 6.2 | pg. 3

G. Planting Schedule: Provide proposed planting schedule, indicating dates for each type of landscape work to be completed, maintenance periods and anticipated “Substantial Completion” date.

H. Warranty: Sample of warranty.

1.05 QUALITY ASSURANCE

A. Installer Qualifications: A single qualified landscape Installer specializing in this work and employing only experienced workers, familiar with planting procedures, and under the full time supervision of a qualified supervisor.

The Contractor must show previous evidence of having successfully installed and maintained landscape projects of similar scope with regards to quantities and sizes of plants.

1. Professional Membership: Installer shall be a member in good standing of either the Professional Landcare Network or the

American Nursery and Landscape Association.

2. Experience: Five years' minimum experience in plant installation in addition to requirements in Division 01 Section "Quality

Requirements."

3. Installer's Field Supervision: Require Installer to maintain an experienced full-time supervisor on Project site when work is in progress.

B. Soil-Testing Laboratory Qualifications: An independent laboratory or university laboratory, recognized by the State Department of Agriculture, with the experience and capability to conduct the testing indicated and that specializes in types of tests to be performed.

C. Topsoil Testing and Analysis: The Contractor shall submit representative samples of topsoil to a soil testing laboratory for testing and analysis, in conformance with the Standards of the Association of Official Agricultural

Chemicals and the USDA Textural Classification and have testing report sent directly to the Architect.

1. Test and analyze topsoil from the from the following sources:

a. 5 samples from the on-site stripped and stockpiled topsoil.

b. 5 samples from each individual off site loam source.

c. 5 samples from the constructed bioswale planting medium.

2. Soil test report that shall include;

a. Mechanical sieve analysis with soil classification.

b. Organic content.

c. Chemical analysis which shall include: pH (1:1 soil-water ratio), buffer pH, Soluble Salts (1:2 soil-water ratio), Nitrate

Nitrogen, Ammonium Nitrogen, Phosphorus, Potassium, Calcium, Aluminum, Magnesium, Manganese, Ferric Iron, Sulfate and toxins including but not limited to lead, cadmium, arsenic, and mercury.

d. Inform the Soil Testing Laboratory that soil tests are for specific applications, i.e.; tree and shrub plantings, turfgrass, wetland restoration and retention areas.

Landscape Standards Hanscom Air Force Base, MA SECTION 6.2 | pg. 4

3. Test and analysis reports shall include the laboratory’s recommendations for amending the topsoil, if necessary, to meet these Specifications herein for each planting area.

D. Obtain written approval from the Base Civil Engineer before delivering materials to the site. Do not use topsoil until test results have been received by the Base Civil Engineer and amendments per specifications and laboratory recommendations required have been completed.

1. Report shall be submitted at least 1 month before any material is to be delivered or installed on the project site.

E. The Base Civil Engineer reserves the right to request topsoil testing and analyses (up to 10 additional tests) after the material have been placed on site, during the maintenance period or during the guarantee period. All testing shall be paid by the Contractor at no additional cost to the Owner.

F. Measurements: Measure according to ANSI Z60.1. Do not prune to obtain required sizes.

1. Trees and Shrubs: Measure with branches and trunks or canes in their normal position. Take height measurements from or near the top of the root flare for field-grown stock and container grown stock. Measure main body of tree or shrub for height and spread;

do not measure branches or roots tip to tip. Take caliper measurements 6 inches above the root flare for trees up to 4-inch caliper size, and 12 inches above the root flare for larger sizes.

2. Other Plants: Measure with stems, petioles, and foliage in their normal position.

G. Substitutions: No substitutions shall be made by the Contractor. If the specified plant material is not obtainable, submit proof of non-availability to the Base Civil Engineer, together with proposal for use of equivalent material, a minimum of one (1) month prior to installation.

H. Pre installation Conference:

1. At least 10 days in advance of the first day of planting operation arrange for a pre-construction meeting between the Base Civil

Engineer, Owners Representative, General Contractor and Planting

Subcontractor to discuss the proposed planting schedule, source of plants, consideration of proposed substitutions and general review of procedures.

1.06 QUALITY CONTROL AT THE SOURCE OF SUPPLY

A. The Base Civil Engineer shall have the right to inspect and select all plant materials at the source of supply for compliance with requirements for genus, species, variety, size, and quality. The Architect further retains the right to inspect trees and shrubs for size and condition of root balls and root systems, insects, injuries and latent defects, and to reject unsatisfactory or defective material at any time during progress of work.

1. Plant selection at the source does not affect the Base Civil

Engineers right of re-inspection and rejection of plant material during the progress of the work.

Landscape Standards Hanscom Air Force Base, MA SECTION 6.2 | pg. 5

B. Make pre-selection arrangements at the source to insure a ready supply of materials, equipment, and manpower required for an efficient selection procedure. The Contractor shall pay all Base Civil Engineer’ expenses for all visits to the source beyond a 100 mile radius from the Base.

1. Notify the Base Civil Engineer 10 days prior to the scheduled date for plant selection.

1.07 DELIVERY, STORAGE, AND HANDLING

A. Packaged Materials: Deliver packaged materials in original, unopened containers showing weight, certified analysis, name and address of manufacturer, and indication of conformance with state and federal laws if applicable.

B. Bulk Materials:

1. Do not dump or store bulk materials near structures, utilities, walkways and pavements, or on existing turf areas or plants.

2. Provide erosion-control measures to prevent erosion or displacement of bulk materials, discharge of soil-bearing water runoff, and airborne dust reaching adjacent properties, water conveyance systems, or walkways.

C. Do not prune trees and shrubs before delivery. Protect bark, branches, and root systems from sun scald, drying, wind burn, sweating, whipping, and other handling and tying damage.