Dimensional standards
Servicing
- Geographic extent
- Applies to all lands designated as Chesapeake Bay Preservation Areas as shown on the Occoquan Chesapeake Bay Preservation Area Map. Intensely Developed Areas (IDAs) are all areas within town limits north of and including Mill Street and Poplar Lane.
Extracted standards
12 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Other
- No encroachment into seaward 50 feet of buffer50 ft
The encroachment may not extend into the seaward 50 feet of the buffer area.
- Buffer width100 ft
a 100-foot vegetated buffer area located adjacent to and landward of the components listed in divisions (A)(1)(a) through (A)(1)(c) above and along both sides of any water bodies with perennial flow.
- Maximum slope for clearing20 pct
Clearing, land disturbance, or development exceeding 500 square feet on slopes 20% or greater is prohibited.
- Minimum DBH for tree preservation6 in
Existing trees over six inches DBH shall be preserved outside the construction footprint.
- Minimize imperviousImpervious coverageThe share of a lot covered by anything water cannot soak through — roofs, drives, patios. cover
Land development shall minimize impervious cover to promote infiltration of stormwater into the ground consistent with the proposed use or development permitted.
- 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 and redevelopment exceeding 2,500 square feet of land disturbance shall be subject to a plan of development process.
- Post-development pollutant load1 ratio
For development, the post-development nonpoint source pollution runoff load shall not exceed the predevelopment load, based on a Chesapeake Bay watershed-wide average impervious surface cover of 16%.
- Redevelopment pollutant load reduction10 pct
For any redevelopment site and for sites within IDAs, the nonpoint source pollution load shall be reduced by at least 10%.
- Tree replacement ratio1 ratio
replacement of existing trees and other vegetation will be achieved at a ratio of one planted tree to one removed.
- Development in RPA
Development in RPAs may be allowed only when permitted by the Zoning Administrator and if it is: water-dependent; constitutes redevelopment; or constitutes development or redevelopment in the IDA.
- New septic tanks prohibitedProhibitedNot allowed in the district at all, short of rezoning or a variance.
New septic tanks and private sewage plants are not permitted.
- Water quality impact assessment required
A water quality impact assessment shall be required for any proposed land disturbance, development, or redevelopment within an RPA, including any buffer area modification or encroachment as provided for in § 157.159; and any development in an RMA, floodplain, area of highly erodible soils, or 20% or greater slopes.
From the ordinance
The Chesapeake Bay Preservation Area Overlay District shall apply to all lands identified as CBPAs as designated by the Town Council and as shown on the Occoquan Chesapeake Bay Preservation Area Map.