Sec. 24-5301

Other

• Machinery cushioning requirement4 inches

  Prior to machinery passing over any area within a tree protection zone during construction activities, the area must be cushioned using plywood sheeting covered by a minimum four-inch-thick layer of wood mulch

• ProhibitedProhibitedNot allowed in the district at all, short of rezoning or a variance. activities in tree protection zone

  Construction site activities, including cutting, filling, grading, parking, equipment or material storage, bury pits, concrete washout, or burning of debris, are prohibited within tree protection zones.

• Protected tree minimum DBH6 inches

  Any healthy tree with a diameter at breast height (DBH) of six inches or greater located within any minimum required yard abutting an existing public street, a transitional buffer, a proffered natural buffer, a wetland, a Chesapeake Bay Resource Protection Area, or similar area protected by this Ordinance

• Protected tree minimum DBH22 inches

  Any healthy tree of a DBH of 22 inches or greater designated by the Board of Supervisors as a memorial, heritage, or specimen tree.

• Protective barrier minimum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first.4 ft

  A minimum four-foot-high wooden post and rail fence with two-inch by four-inch posts and a double one-inch by four-inch rail

• Replacement tree maintenance period1 years

  Required replacement trees must be maintained for one year from the time of their planting.

• Replacement tree ratio1 tree per tree removed

  One replacement tree for each protected tree removed

• Replacement tree ratio for unpermitted removal15 caliper inches per 10 inches DBH

  a minimum of 15 caliper inches of replacement trees must be planted for every ten inches DBH or fraction thereof of protected trees removed

• Replacement tree ratio for woodland1 tree per 1000 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  One large deciduous or evergreen replacement tree, 4 caliper inches, for every 1,000 square feet of woodland cleared

• Tree protection plan required

  A tree protection plan must be submitted before any land disturbance takes place

• Tree protection zone definition1 ft

  The tree protection zone of a protected tree consists of the area within the drip line of the tree extended one foot outward.

• Warning sign maximum spacing150 ft

  not more than 150 feet apart

• Warning sign minimum area1 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  Protective barriers must be posted with warning signs at least one square foot in area