SPECS Encl 2 Tree Replacement Formula - Middlesex County Parks (3).pdf
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- Cheesequake Creek East Jetty Rehabilitation
- Solicitation number
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About this file
This is a tree replacement requirement document issued by the Middlesex County Department of Infrastructure Management, Office of Parks & Recreation in New Brunswick, New Jersey.
The document establishes a mandatory tree replacement formula for contractors who must remove living trees from Middlesex County Parkland. Replacement trees must be equivalent in material volume to trees removed, calculated using a cross-sectional area formula based on diameter at breast height (DBH) measurements. The calculation methodology uses the formula A = πR², where R represents the radius at breast height in inches and π equals 3.14. All replacement trees must comply with terms, conditions, species selections, and planting locations as determined by the Middlesex County Office of Parks and Recreation and the Director of Parks. The example provided demonstrates that removal of one 20-inch caliper DBH red maple tree (314 square inches) requires planting approximately 44 replacement trees at 3-inch caliper DBH (7.07 square inches each) to meet the equivalency requirement. This formula applies proportionally to any tree removal scenarios contractors encounter on county parkland projects.
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Text version
Ronald G. Rios County Commissioner Director
Shanti Narra County Commissioner Deputy Director
Claribel A. Azcona-Barber Charles Kenny Leslie Koppel Chanelle Scott McCullum Charles E. Tomaro County Commissioners
Charles E. Tomaro Chairperson, Infrastructure Management
John A. Pulomena County Administrator
Dennis Cerami
Department Head
Richard Lear Director
DEPARTMENT OF INFRASTRUCTURE MANAGEMENT
Office of Parks & Recreation
P.O. Box 661, New Brunswick, NJ 08903 Phone: 732-745-3900 www.middlesexcountynj.gov
When a contractor is required to remove a living tree from a Middlesex County Parkland they may be required to replace that tree with an equivalent amount of tree material using the formula described below. All replacement trees will be in accordance with the terms, conditions, species and locations as determined by the Middlesex County Office of Parks and Recreation and the Director of Parks.
Example:
Project A requires the removal of one tree: a 20” caliper DBH red maple tree
Calculation of Total Square Inches Removed:
A = π R² R = Radius at Breast Hight (inches) π = 3.14
• Area Maple = π (20/2)² = inches²
• Area Maple = π (10)²
• Area Maple = 314 square inches
Calculation of Replace Tree Requirement *Assume replacement trees are 3 inch caliper (DBH)
• Replacement trees = A = π R²
• Replacement Trees = π (3/2) ²
• Replacement Trees = 7.07 inches²
Number of Replacement Trees Required X = 314 square inches / 7.07 square inches X = 44.4 trees at 3” caliper DBH
If Project A removes one (1) 20” caliper DBH tree, approximately forty-four (44) 3” caliper DBH trees must be planted to replace it.
http://www.middlesexcountynj.gov/
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