Sec. 22-94

Other

• AgriculturalAgricultureRaising crops or livestock, generally including the structures that serve them. pollution reduction40 pct

  achieve a 40 percent reduction in non-point source pollution from agricultural and silviculture uses.

• Maximum agriculturalAgricultureRaising crops or livestock, generally including the structures that serve them. buffer encroachment75 ft

  To a maximum of 75 feet when agricultural best management practices which address erosion control, nutrient management, and pest chemical control, are being implemented on the adjacent land.

• Maximum buffer encroachment for pre-1989 lots50 ft

  The encroachment may not extend into the seaward 50 feet of the buffer area.

• Buffer nutrient reduction40 pct

  The 100-foot buffer area shall be deemed to achieve a 75 percent reduction of sediments and a 40 percent reduction of nutrients.

• Buffer sediment reduction75 pct

  The 100-foot buffer area shall be deemed to achieve a 75 percent reduction of sediments and a 40 percent reduction of nutrients.

• Vegetated buffer width100 ft

  a 100-foot vegetated buffer area located adjacent to and landward of the components listed in subsections (a) through (c) above, and along both sides of any water body with perennial flow.

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

  All development and redevelopment exceeding 2,500 square feet of land disturbance shall be subject to a plan of development process

• Major WQIA land disturbance threshold5,000 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  A major water quality impact assessment shall be required for any development which (i) exceeds 5,000 square feet of land disturbance within CPBAs

• Minor WQIA land disturbance 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 development within CBPAs which causes no more than 5,000 square feet of land disturbance

• Maximum post-development phosphorus load0.45 lbs/acreacre43,560 square feet — about the size of an American football field without the end zones./year

  For new development, the post-development non-point source pollution runoff load shall not exceed the pre-development load, based on the CBLAD default average watershed load of 0.45 pounds of phosphorus per acre per year.

• Redevelopment pollution reduction10 pct

  Redevelopment of any site shall achieve at least a 10 percent reduction of the nonpoint source pollution in runoff compared to the existing runoff load from the site.

• 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 replacement tree size2.5 in

  Replacement trees shall be a minimum of two and one-half inches DBH at the time of planting.

• Reserve drainfield requirement100 pct

  Plat or plan note providing that a 100 percent reserve drainfield is required for on-site sewage treatment systems

• RMA WQIA imperviousImpervious coverageThe share of a lot covered by anything water cannot soak through — roofs, drives, patios. cover threshold60 pct

  or (ii) the proposed development results in more than 60 percent impervious cover on the lot or parcel being developed.

• RMA WQIA land disturbance threshold50 acresacre43,560 square feet — about the size of an American football field without the end zones.

  any development in the RMA if (i) the proposed development exceeds 50 acres

• Septic pump-out frequency5 years

  All on-site sewage disposal systems not requiring a VPDES permit shall be pumped out at least once every five years.

• Tree preservation diameter threshold12 in

  Existing trees over 12 inches diameter at breast height (DBH) shall be preserved outside the construction footprint.