Sec. 106-235

Other

• Channeling runoff directly into water bodies prohibitedProhibitedNot allowed in the district at all, short of rezoning or a variance.

  Channeling runoff directly into water bodies shall be prohibited.

• Detention bank slope3 ratio

  The banks of detention and retention areas shall slope at a gentle grade (3:1 or less) into the water as a safeguard against drowning, personal injury, or other accidents, to encourage the growth of vegetation, and to allow the alternate flooding and exposure of areas along the shore as water levels periodically rise and fall.

• Groundwater use analysis threshold10,000 gallons per day

  A groundwater use analysis shall be included in the resource quality protection plan for any proposed subdivision with 50 or more lots and an expected groundwater use of 10,000 gallons per day or more.

• ImperviousImpervious coverageThe share of a lot covered by anything water cannot soak through — roofs, drives, patios. surface threshold for resource quality protection plan5 acresacre43,560 square feet — about the size of an American football field without the end zones.

  For any commercial or industrial development which creates five acres or more of impervious surface, or any subdivision which creates 50 or more lots, a resource quality protection plan must be submitted and approved before: a. A plat is recorded, land is subdivided, or a building permit issued; or b. Grading, clearing, or any type of vegetation removal activities are commenced; or c. Development is commenced.

• Runoff release rate not to exceed predevelopment

  The release rate and pollutant loading of stormwater runoff from development shall not exceed the stormwater runoff rate and pollutant loading from the land area in its present state of use or development.

• Subdivision lot threshold for resource quality protection plan50 lots

  or any subdivision which creates 50 or more lots