Board approves reduced impervious-cover variance with stormwater mitigation requirements
Summary
A homeowner seeking an addition was granted a variance restricting pre-mitigation impervious cover to 44% with a requirement to mitigate back to a functional equivalent of 35%, pending stormwater management review.
The Board of Zoning Appeals approved a variance request for 387 Battlefield Creek Drive to allow increased impervious cover for an attached garage, but limited the temporary pre-mitigation cap to 44% and required mitigation to the functional equivalent of 35% impervious coverage.
Applicant representative Thomas Campbell told commissioners a corrected survey showed existing lot coverage of 37%, and that the attached garage would raise coverage to about 41%. He said the applicants had intended not to increase lot coverage beyond the existing conditions. “To our surprise, the existing lot coverage is actually 37%,” Campbell said. County stormwater manager Andrew Heath recommended mitigation commensurate with the amount over the 35% maximum and said staff would work with the applicant to design on-site measures.
Commissioners adopted a motion that limited the variance to a maximum of 44% pre-mitigation impervious cover and required mitigation to achieve the functional equivalent of 35% impervious coverage, subject to stormwater comments. Vote 4–0.
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