Mt. Lebanon Public Works Screening Option 1 – Screening with Plants This option uses only plants as measures for screening the Public Works buildings and material storage yards.

Rhododendron ‘Roseum Elegans’ is an evergreen shrub growing to 6-8’ tall and wide which blooms with lilac colored flowers in the spring. Rhododendron is proposed to supplement the existing deciduous understory with year round evergreen screening. The Rhododendron shall be interplanted at approximately 8’ on center. They shall not be pruned or trimmed, but be allowed to grow naturally into the existing vegetation. Some existing vegetation may initially need to be cleared to allow placement of the Rhododendron. They shall be placed 5’ off of the western side of the guide rail or fence.

Ilex x ‘Blue Princess’ is an evergreen shrub which can grow up to 10’ tall and wide. Ilex has dark, glossy evergreen leaves with red berries in the fall. Ilex is being proposed to create a dense evergreen understory under the existing Locust trees. The Ilex shall be planted at approximately 5’ on center and shall be planted 3’ off of the western side of the existing split rail fence. The Ilex will grow to form a dense evergreen hedge that may need to be pruned every couple of years on the eastern side to prevent it from encroaching into the grassy area between the fence and the road. However, the western side of the Ilex shall not be pruned to encourage depth of screening. One male holly (Ilex x ‘Blue Stallion’) shall be planted as a pollinator.

Probability of Cost (160) 30” B&B Rhododendron ‘Roseum Elegans’ at $100 each (145) 30” B&B Ilex x ‘Blue Princess’ at $100 each

$16,000 $14,500 Total $30,500

This estimate is an opinion based on past experiences and is not a projection of current market conditions.

Mt. Lebanon Public Works Screening Option 2 – Screening with Fence and Plants This option uses plants and fencing as measures for screening the Public Works buildings and material storage yards. This option also includes measures to help the buildings for residents living along Cedar Boulevard.

Rhododendron ‘Roseum Elegans’ is an evergreen shrub growing to 6-8’ tall and wide which blooms with lilac colored flowers in the spring. Rhododendron is proposed to supplement the existing deciduous understory with year round evergreen screening. The Rhododendron shall be interplanted at approximately 8’ on center. They shall not be pruned or trimmed, but be allowed to grow naturally into the existing vegetation. Some existing vegetation may initially need to be cleared to allow placement of the Rhododendron. They shall be placed 5’ off of the western side of the guide rail or fence.

A combination of solid fencing and plants is recommended to provide a solid, year round screen. The existing split rail fence would be removed and a solid fence erected in its place. The fence shall be dark brown to blend in with the landscape. The fence can be wood or vinyl. Vinyl fencing has lower maintenance associated with it, but usually a higher initial cost. The access points along Cedar Boulevard into the landscape materials storage yard shall be consolidated to one and gated to minimize unnecessary views into the area.

Mt. Lebanon Public Works Screening Option 2 – Screening with Fence and Plants

A row of Clethra alnifolia x ‘September Beauty’ shall be planted on the eastern side of the fence, between the fence and the road. Clethra is a deciduous shrub blooming near the end of the summer which grows to 3-4’ tall and wide. It is a low maintenance plant and is salt tolerant and deer resistant. Clethra also has a sweet, spicey fragrance when in bloom that will be observed by those driving or walking down Cedar Boulevard. Clethra shall be planted 3’ on center. They shall be allowed to grow into one another to form a solid hedge and should not be pruned or trimmed unless absolutely needed.

Hydrangea anomala subsp. petiolaris is a climbing vine with heads of white flowers in June. It can be planted to climb the fence to help it blend into the landscape. Climbing Hydrangea shall be planted 10’ on center.

Abies intermedia ‘Canaan’ is an evergreen tree growing to 30-40’ tall and 15-20’ wide. Abies shall be planted in the primarily deciduous buffer that is east of the existing maintenance buildings. The Abies will help to screen the buildings from residents living on the opposite side of Cedar Boulevard whose houses face the buildings. They should not be planted in a straight line but rather randomly interplanted into the existing vegetation in groups and clusters so as to effectively screen the existing buildings. Some existing vegetation may initially need to be cleared to allow for placement of the Abies.

Mt. Lebanon Public Works Screening Option 2 – Screening with Fence and Plants Probability of Cost (160) 30” B&B Rhododendron ‘Roseum Elegans’ at $100 each (185) 30” #5 Cont. Clethra alnifolia ‘September Beauty’ at $50 each (750) LF Fence with Gate @ $30 per LF (50) 9’ B&B Abies intermedia ‘Canaan’ @ $500 each

$16,000 $9,250 $22,500 $25,000

Total $72,750 This estimate is an opinion based on past experiences and is not a projection of current market conditions.

Mt. Lebanon Public Works Screening Option 3 – Screening with Berm and Plants This option uses a landscaped berm to screen the construction materials storage area using evergreen and deciduous plants. The berm shall be 4’ above the roadway elevation and planted with a selection of evergreen trees and shrubs and deciduous shrubs. It is important to plant several different types of trees and shrubs on the berm. Many new diseases and pests are being introduced and discovered in the United States. By using a variety of species in plantings we can avoid having a catastrophic loss should a disease or pest settle in. It will take many years for the screening to fully mature but it could only take a few months for a disease or pest to significantly damage the buffer if only one or two varieties of plants are used. Evergreen trees shall be arranged randomly, with no more than three consecutive trees of the same species, spaced at approximately 20’ on center. The trees shall be staggered and not planted in a straight line, with some on the top, face and back of the berm. Evergreen tree species shall include Pinus strobus (White Pine), Picea abies (Norway Spruce), Picea omorika (Serbian Spruce), Abies intermedia ‘Canaan’ (Canaan Fir) and Pseudotsuga menziesii (Douglas Fir). Evergreen trees shall be as large as possible when installed. Typically, 8-10’ tall trees can be found in the nursery trade. Evergreen and deciduous shrubs shall be planted on the eastern side of the berm to make it look more natural by softening the transition between the road and the evergreen trees. The shrubs will also help to screen the construction materials until the trees begin to reach maturity. 7-10 shrubs of the same species shall be grouped together at a time and the groupings shall alternate between deciduous and evergreen plants. The shrubs shall be staggered on the face of the berm and not planted in a straight line. They shall be 36” min height when installed and placed at approximately 8’ on center. Evergreen shall shrub species include Rhododendron ‘Roseum Elegans’ (Rhododendron) and Ilex x ‘Blue Princess’ (Blue Princess Holly). Deciduous shrubs shall include Hydrangea quercifolia (Oakleaf Hydrangea), Aesculus parviflora (Bottlebrush Buckeye) and Viburnum dentatum (Arrowwood Viburnum).

Probability of Cost Erosion and Sedimentation Controls (9,000) CY Fill placed @ $12 per CY; Offsite source (900) LF12” Storm Pipe @ $30 per LF (8) 18”x18” Yard Drains @ $1,000 EA (1) Endwall with Rip Rap (45) 8-10’ Evergreen Trees @ $500 each (115) 3’ Deciduous and Evergreen Shrubs @ $100 each

$3,500 $108,000 $27,000 $8,000 $2,000 $22,500 $11,500 Total $182,500

This estimate is an opinion based on past experiences and is not a projection of current market conditions.