Philbrook Avenue Wetlands and Stream Riparian Restoration Project Planting Plan 2009 REVISED AUGUST 24, 2009 Submitted by Boyle Associates Per Request of Gorrill Palmer Consulting Engineers & the Cumberland County Soil and Water Conservation District Goal The goal of the project is to increase woody plant density and diversity along the stream and wetlands that flow adjacent to Philbrook Avenue near the Maine Mall in South Portland. In order to achieve this goal native plant species have been chosen that can tolerate an urban setting, are resistant to pollution and wind damage, grow quickly, and can provide habitat (food and shelter) for native birds and small mammals. Adding woody plants along this riparian area will increase filtration of sediments and slow runoff, reduce erosion, increase wildlife habitat, improve the aesthetic qualities of the corridor, and provide additional shading for the stream and wetland areas. Improvements to the stream and headwater wetlands will improve water quality to the benefit of downstream resources, including Clark s Pond and the MDEP-listed Urban Impaired Stream Long Creek. -PLEASE NOTE- Planting locations provided herein are approximate suggested locations. Actual plant placement may vary depending on field conditions, slopes within the planting area, density of existing vegetation, site stability, and access. Plants Required: Table 1. Plant species list, number required, preferred size, and recommended planting zone for species. Preferred Size Range of Species Common Name Species Latin Name Total grown) Plantings Recommended (burlapped or container- Planting Zone * Red Maple Acer rubrum 12 4 to 5 feet TOB/WET * Larch Larix laricina 25 3 to 4 feet TOB/WET * White Pine Pinus strobus 25 6 to 7 feet TOB *Red Oak Quercus rubra 14 5 to 6 feet TOB * American Elm Ulmus americana 10 4 to 5 feet TOB/SS Speckled Alder Alnus incana 44 1.5 to 2 feet WET * Shadbush Amelanchier canadensis 26 2 to 2.5 feet SS Black Chokeberry Aronia melanocarpa 28 2 to 2.5 feet SS Red-osier Dogwood Cornus sericea 51 2 to 2.5 feet SS/WET Ninebark Physocarpus opulifolius 28 1.5 to 2.5 feet SS/TOB Willow (shrub) Salix sp. 50 1.5 to 3 feet SS Broadleaf Meadowsweet Spiraea alba (var. latifolia) 60 1.5 to 2 feet All zones Highbush Blueberry Vaccinium corymbosum 60 2 to 2.5 feet SS/TOB Staghorn Sumac Rhus typhina 35 1.5 to 2 feet Sumac Stand Total 468 * plants to be installed by Bourne Landscape (others to be installed by CCS&WCD volunteers) Planting Zones: The planting zones are the areas within the planting sites that have the appropriate hydrology and landscape setting for the particular plants being installed. The zones for each planting area are shown on each of the planting area drawings. There are also 2 photographic examples of the zones included below. Boyle Associates 24 August 2009
Wetland Zone (WET) within 5-10 feet (+/-) of the cattails near the toe-of-slope and w/in wet seeps on the slopes Sideslope Zone (SS) on the side slopes between the wetlands and the dry shoulder of the slope Top of Bank Zone (TOB) on the shoulder and within the level area above the slope Installation Woody plants should be installed as outlined in the University of Maine Cooperative Extension Bulletin (#2366) Selecting, Planting and Caring for Shrubs and Trees in the Maine Landscape (attached). Sod removed from the planting holes should be transported offsite to a designated facility. Mulch must be applied to a radius of at least 2 feet and a depth of at least 3 inches around all plantings. Mulch can be shredded bark, erosion control mix or similar material. An inert underlayment, such as weed-control fabric, shall be installed under the mulch to a minimum radius of 3 feet around the plantings for added protection against competition from herbaceous plants. Mulch and fabric shall be provided by CCS&WCD. Maintenance The planting areas must be monitored at least biweekly after installation to inspect for desiccation, herbivory, erosion, or other concerns. A plan should be in place to water the plants, at least weekly, throughout the rest of the 2009 growing season and during the 2010 season, as needed (the City of South Portland has agreed to perform the necessary watering). A spring and summer 2010 monitoring effort should also be planned to inspect the site for any maintenance or plant replacement needs. Bourne Landscaping is only responsible for monitoring the plants that they installed (see Table 1). Disturbed Slope Seeding In order to achieve quick cover of the exposed sideslopes adjacent to the stream and wetlands, these areas should be seeded with a seed mix of native grasses and herbs that includes a variety of legumes and seed-producing species that can tolerate a range of conditions. To ensure the quickest coverage and erosion control, these areas should be loamed with 3 to 4 inches of topsoil, seed should be applied along with appropriate quantities and type of fertilizer and lime, and then the areas should be mulched with hay or straw mulch. On steep slopes with a lack of vegetative cover, slope stabilization netting or mesh may need to be installed to ensure that the seed and mulch stays in place. Invasive Species (Not Part of White Brothers Contract) While the scope of this planting plan does not cover invasive species management, we strongly suggest that the City, CCS&WCD, the South Portland Land Trust, or another entity create and administer an invasive species management plan for the area. Reduction of the invasive species will reduce competition on the native plants and reduce the risk of the site becoming dominated by invasive species. The invasive species recently documented on the site are very aggressive colonizers, and include common reed (Phragmites australis), honeysuckle species (Lonicera spp.), buckthorn (Frangula alnus), and autumn olive (Elaeagnus umbellata). ATTACHMENTS: Photo-examples of planting zones in planting areas 1C and 3 Table 2. Plant species, number and general locations per planting area Boyle Associates 24 August 2009
Site drawings Locus Map of all Planting Areas Close-up of Suggested Plant Locations for Planting Areas 1 through 3 Cross-section sketches of planting locations within each area University of Maine Cooperative Extension Bulletin (#2366) Selecting, Planting and Caring for Shrubs and Trees in the Maine Landscape Boyle Associates 24 August 2009
Planting Zone Example 1. Planting Area 1C (Hampton Inn) Boyle Associates 24 August 2009
Planting Zone Example 2. Planting Area 3 (Econo Lodge) Boyle Associates 24 August 2009
Table 2. Planting Plan List of Plants Planting Area 1A (2100 sq ft +/-) Larix laricina Pinus strobus Quercus rubra Physocarpus opulifolius Vaccinium corymbosum Total # of Plants Approximate Planting Location 3 near wet areas along sideslope and near bottom 2 along on flat area above bank 3 along on flat area above bank 3 spread out along sideslope and shoulder of bank 5 spread out along sideslope and shoulder of bank 16 Planting Area 1B (10800 sq ft +/-) Acer rubrum Larix laricina Alnus incana Amelanchier candensis Aronia melanocarpa Cornus sericea Physocarpus opulifolius Salix sp. Spiraea latifolia Total Planting Area 1C (11600 sq ft +/-) Pinus strobus Quercus rubra Ulmus americana Alnus incana Amelanchier canadensis Aronia melanocarpa Cornus sericea Physocarpus opulifolius Salix sp. Spiraea alba (var. latifolia) Vaccinium corymbosum Total Planting Area 2 (15400 sq ft +/-) Acer rubrum Larix laricina Pinus strobus Alnus incana Cornus sericea Salix sp. Spiraea alba (var. latifolia) Total Planting Area 3 (27800 sq ft +/-) Larix laricina Pinus strobus Quercus rubra Amelanchier canadensis Aronia melanocarpa Cornus sericea Physocarpus opulifolius Salix sp. Vaccinium corymbosum Total Sumac Stand (2600 sq ft +/-) Rhus typhina # of Plants Approximate Planting Location 5 spread out evenly along toe 8 spread out evenly along toe alternating with Acer 17 spread out along toe of slope - filling in spaces between Acer and Larix 7 clumps spread out along sideslope 6 clumps spread out along sideslope 10 clumps spread out along wet area and on adjacent side slope 8 clumps spread out along sideslope 10 clumps spread out along the edge of the wet area 25 clumps of 2 spread out along top of bank (avoid sewer line) 96 # of Plants Approximate Planting Location 8 as shown - roughly in line with existing trees on top of bank/yard area 6 as shown - roughly in line with existing trees on top of bank/yard area 10 near the wet boundary - roughly across from larch on other side 17 spread out along wet boundary 7 clumps spread out along sideslope 6 clumps spread out along sideslope 11 clumps spread out along the edge of the wet area 8 clumps spread out along sideslope 10 clumps spread out along the edge of the wet area 25 clumps of 2 spread out along top of bank 30 clumps of 2 spread out along top of bank - alternate with Spiraea 138 # of Plants Approximate Planting Location 7 installed near top of bank roughly 10-15 feet north/northest of existing landscape trees 8 every 60 feet (+/-) along edge of wet area 5 along TOB in between installed Acers on south side of stream 10 clumps of 2 plants/clump installed near wet area in between Larix 20 clumps spread out along the edge of the wet area 20 clumps spread out along the edge of the wet area 10 clumps of 2-3 plants in openings along northern TOB 80 # of Plants Approximate Planting Location 6 spread out in wetland and along wet sideseeps 10 between proposed trail and the existing basin TOB 5 in clearings between existing pine trees and the basin along Philbrook Ave 12 clumps spread out along sideslope 16 clumps spread out along sideslope 10 clumps spread out along the edge of the wet area and on wet sideseeps 9 clumps spread out along sideslope 10 clumps spread out along the edge of the wet area and on wet sideseeps 25 along TOB by proposed trail - in between new Pinus 103 # of Plants Approximate Planting Location 35 spread out along either side of trail
Planting Area 3 Planting Area 1A Planting Area 1B Planting Area 2 ECONO LODGE Planting Area 1C John Roberts Road Philbrook Avenue HAMPTON INN Legend SoPo_Land_Trust_Existing_Trails SoPo_Land_Trust_Proposed_Trails Water Sumac Stand WET Planting Zone SS Planting Zone TOB Planting Zone ³ 0 75 150 300 Feet 1 inch = 150 feet Philbrook Avenue Riparian Restoration Planting Plan: Planting Areas Locus Map (blue frames represent drawing limits on closeup drawings) Project: 338 Philbrook Planting Client: GP & CCSWCD Prepared by: REJ Drawing Date: 20 July 2009 Revision Dates:NA Notes: -not a boundary survey -resources and site features are sketched -not intended for permitting purposes 1000 Riverside Street Portland, ME 04103 Phone: 207.541.9100 Fax: 207.541.9110
³ Planting Area 1A Planting Area 1B PWD Sewer Easement (Check with Gorrill Palmer before planting) Plant Locations (suggested) YZ Larix ts Quercus YY Pinus Acer k Ulmus Planting Area 1C Õ â Amelenchier, Aronia & Physocarpus Cornus & Salix Õ Vaccinium l Spiraea d Alnus Legend WET Planting Zone SS Planting Zone TOB Planting Zone Water 0 40 80 Feet 1 inch = 40 feet PLANTING AREAS 1A, 1B, & 1C Approximate Planting Map Plant locations will vary depending on field conditions, this map is meant as a general guide to the area and reference for plant locations. Plantings must avoid interfering with recent sewer work areas. Project: 338 Philbrook Planting Client: GP & CCSWCD Prepared by: REJ Drawing Date: 24 August 2009 Revision Dates:NA Notes: -not a boundary survey -resources and site features are sketched -not intended for permitting purposes 1000 Riverside Street Portland, ME 04103 Phone: 207.541.9100 Fax: 207.541.9110
Philbrook Ave. PWD Sewer Easement (Check with Gorrill Palmer before planting) Plant Locations (suggested) Acer YZ Larix YY Pinus Õ Amelenchier, Aronia & Physocarpus â Cornus & Salix l d Spiraea Alnus Legend SoPo_Land_Trust_Proposed_Trails WET Planting Zone SS Planting Zone TOB Planting Zone ³ 0 20 40 Feet PLANTING AREA 2 Approximate Planting Map Plant locations will vary depending on field conditions, this map is meant as a general guide to the area and reference for plant locations. Plantings must avoid interfering with recent sewer work areas. Project: 338 Philbrook Planting Client: GP & CCSWCD Prepared by: REJ Drawing Date: 24 August 2009 Revision Dates:NA Notes: -not a boundary survey 1000 Riverside Street 1 inch = 40 feet -resources and site features are sketched Portland, ME 04103 -not intended for permitting purposes Phone: 207.541.9100 Fax: 207.541.9110
PWD Sewer Easement (Check with Gorrill Palmer before planting) Philbrook Ave. Plant Locations (suggested) PWD Sewer Easement (Check with Gorrill Palmer before planting) YZ Larix ts Quercus YY Pinus Legend SoPo_Land_Trust_Existing_Trails SoPo_Land_Trust_Proposed_Trails Water WET Planting Zone SS Planting Zone TOB Planting Zone Sumac Stand ³ 0 25 50 Feet PLANTING AREA 3 Approximate Planting Map Plant locations will vary depending on field conditions, this map is meant as a general guide to the area and reference for plant locations. Plantings must avoid interfering with recent sewer work areas. Project: 338 Philbrook Planting Client: GP & CCSWCD Prepared by: REJ Drawing Date: 24 August 2009 Revision Dates:NA Notes: -not a boundary survey 1000 Riverside Street 1 inch = 30 feet -resources and site features are sketched -not intended for permitting purposes Acer Õ Amelenchier, Aronia & Physocarpus â Cornus & Salix Õ Vaccinium Sumac Stand (35 sumacs planted) Portland, ME 04103 Phone: 207.541.9100 Fax: 207.541.9110