Sec. 54-482(c)

Other

• AgriculturalAgricultureRaising crops or livestock, generally including the structures that serve them. buffer encroachment (landward)50 ft

  Agricultural activities may encroach into the landward 50 feet of the 100-foot-wide buffer area when at least one agricultural best management practice ... is being implemented

• AgriculturalAgricultureRaising crops or livestock, generally including the structures that serve them. buffer encroachment (landward, 75 ft)75 ft

  Agricultural activities may encroach within the landward 75 feet of the 100-foot-wide buffer area when agricultural best management practices which address erosion control, nutrient management, and pest chemical control, are being implemented

• Buffer encroachment seaward limit50 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.

• Buffer width100 ft

  A 100-foot buffer area shall be located adjacent to and landward of other RPA components and along both sides of any water body with perennial flow.

• Maximum imperviousImpervious coverageThe share of a lot covered by anything water cannot soak through — roofs, drives, patios. surface in RMA

  The total amount of impervious surface within an RMA shall not exceed the following: [table omitted]

• Maximum land disturbance60 pct

  Land disturbance, in accordance with an approved site plan, shall be limited to 60 percent of the site and shall be clearly shown on submitted plans and physically marked on the development site.

• Minimum tree DBH to preserve6 inches

  all trees located outside the area of land disturbance with a DBH of six inches or more shall be preserved

• Plan of development threshold2,500 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 shall be accomplished through a plan of development process

• Post-development pollutant load

  For development, the post-development nonpoint source pollution runoff load shall not exceed the pre-development load based on the calculated average land cover conditions.

• Redevelopment pollutant reduction10 pct

  For redevelopment the nonpoint source pollution load shall be reduced by at least ten percent.

• Replacement tree minimum caliper2.5 inches

  Replacement trees shall be a minimum 2.5 inches caliper at the time of planting.

• Reserve sewage disposal site required

  A reserve sewage disposal site with a capacity at least equal to that of the primary sewage disposal site shall be provided

• Septic pump-out frequency5 years

  All on-site sewage disposal systems not requiring a Virginia Pollutant Discharge Elimination System permit shall be pumped out at least once every five years

• Stormwater facility installation time18 months

  All required stormwater management facilities or other specifications shall be installed and approved within 18 months of project commencement.

• Tree replacement ratio2 ratio

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