Sec. 3-1405

Other

• Resource Protection Area buffer width100 ft

  A 100-foot buffer area located adjacent to and landward of the components listed in subsections [a.] through [d.] above, and along both sides of any water bodies with perennial flow

• Allowable encroachment into landward 50 feet of buffer50 ft

  encroach into the landward 50 feet of the 100-foot buffer area as permitted under Section 3-1403.D.5.b.

• Minor water quality impact assessment threshold5,000 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  A minor water quality impact assessment pertains only to land disturbance, development or redevelopment activity within a CBPA which causes no more than 5,000 square feet of land disturbance

• Required nutrient removal40 pct

  removal of no less than 75 percent of sediments and 40 percent of nutrients from post-development stormwater runoff

• Land disturbance threshold for plan of development2,500 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  Any development or redevelopment exceeding 2,500 square feet of land disturbance in the CBPA shall be accomplished through a plan of development process

• Tree replacement ratio2 trees per tree removed

  replacement of existing trees and other vegetation will be achieved at a ratio of two planted trees to one removed

• Minimum caliper of replacement trees2.5 in

  Replacement trees shall be a minimum two and one-half inches caliper measured six inches above the ground at the time of planting.

• Required sediment removal75 pct

  removal of no less than 75 percent of sediments and 40 percent of nutrients from post-development stormwater runoff

• Slope threshold for delineation15 pct

  Slopes greater than 15 percent

• ImperviousImpervious coverageThe share of a lot covered by anything water cannot soak through — roofs, drives, patios. cover threshold for stormwater plan exemption16 pct

  This submittal is not required for individual one- and two-family homes located on lots one acre or greater in size if the impervious cover is 16 percent or less of the total site area.

• Lot areaMinimum lot areaThe smallest parcel on which the district allows anything to be built. threshold for stormwater plan exemption1 acreacre43,560 square feet — about the size of an American football field without the end zones.

  This submittal is not required for individual one- and two-family homes located on lots one acre or greater in size