Section 11.4-6

Other

• AgriculturalAgricultureRaising crops or livestock, generally including the structures that serve them. conservation assessment

  Land upon which agricultural activities are being conducted shall have a soil and water quality conservation assessment conducted

• Buildable area depiction

  The depiction of the buildable areas that are allowed on each lot based on the performance criteria required here

• Canopy tree heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first.35 ft

  Canopy tree. A tree that typically reaches 35 feet in height or taller when mature.

• Climate change assessment timeframe30 years

  The required projected timeframe for impact analysis shall be 30 years.

• Major 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 major water quality impact assessment shall be required for any proposed development which (i) exceeds 5,000 square feet of land disturbance and proposes to encroach into the landward 50 feet of the 100-foot RPA buffer area

• Mature canopy tree DBH12 in

  Mature tree. A canopy tree with a diameter at breast height (DBH) of 12 inches or greater or an understory tree with a DBH of four inches or greater.

• Mature understory tree DBH4 in

  or an understory tree with a DBH of four inches or greater.

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

  Land development shall minimize impervious cover consistent with the proposed use or development.

• Minimize land disturbance

  No more land shall be disturbed than is necessary to provide for the proposed use or development.

• No clear cutting in RPA

  Clear cutting of trees within the RPA shall not be permitted.

• Natural resources inventory required

  An NRI... shall be required for all properties proposed for development or any land disturbing activities within the city.

• Nutrient removal requirement40 pct

  and 40 percent of nutrients

• Plan of development threshold2,500 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  All development exceeding 2,500 square feet of land disturbance shall be accomplished through a plan of development review process

• Preserve indigenous vegetation

  Indigenous vegetation shall be preserved to the maximum extent practicable consistent with the proposed use or development.

• Minimum DBH for tree preservation2 in

  Existing trees over two inches DBH outside the limits of land disturbance shall be preserved

• Reserve sewage disposal site capacity

  For new construction not served by public sewer or other system requiring a VPDES permit provide a reserve sewage disposal site with a capacity at least equal to that of the primary sewage disposal site.

• Sediment removal requirement75 pct

  A water quality impact assessment must demonstrate that the undisturbed buffer area, enhanced vegetative plantings and any required best management practices will result in the removal of no less than 75 percent of sediments and 40 percent of nutrients from post-development stormwater runoff

• Septic pump-out frequency5 years

  All on-site sewage treatment systems not requiring a Virginia Pollution Discharge Elimination System (VPDES) permit shall have pump-out accomplished for all such systems at least once every five years.

• Sewage pump-out notation

  Under this chapter, the lots shown hereon are subject to having sewage disposal systems pumped out every five years.

• Stormwater management compliance

  Any Chesapeake Bay Preservation Area land disturbance activity... shall comply with the Virginia Stormwater Management Regulations

• Tree protection distance from drip line10 ft

  Land disturbance shall not occur within ten feet of the drip line of any stand of trees to be preserved

• Understory tree minimum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first.12 ft

  Understory tree. A tree that typically reaches 12 feet to 35 feet in height when mature.

• WQIA for buffer encroachment

  A water quality impact assessment shall be required... for any buffer encroachment as provided for in section 11.4-9(e)

• Water quality impact assessment required in RPA

  A WQIA is required for any land disturbance proposed within the RPA.