10-5-7: IMPERVIOUS SURFACE COVERAGE:
A.   Total Impervious Surface Limitation: Subject to the limitations set forth in subsection B of this section, the total amount of impervious surfaces on any lot in any residential district shall not exceed the percentages of the total area of the lot as set forth in the applicable subsection below:
1.   For lots in the R-1, R-2, R-3, R-4 and R-5 residence districts:
 
Width Of Lot
Maximum Percentage
Less than 50'
60%
50' to 75'
50% + [(75' - the actual width of the lot in feet) x 0.4]
Example: Lot width of 65':
(75 - 65 = 10) (10 * 0.4 = 4) (4 + 50% = 54%)
More than 75'
50%
 
2.   For lots in E-2, E-1, and C-E residence districts:
 
Area Of Lot
Maximum Percentage
Less than 12,000 sq. ft.
50%
12,000 sq. ft. to 43,560 sq. ft.
40% + [(43,560 sq. ft. - lot size) x 0.000317]
More than 43,560 sq. ft.
40%
 
B.   Required Front Yard Setback Impervious Surface Limitation: The total amount of impervious surfaces in the required front yard setback of any lot in any residence district shall not exceed the following percentages of total area of the required front yard of the lot:
 
Width Of Lot
Maximum Percentage
Less than 25'
75%
25' to 49'
45% + [(50' - lot width) x 1.2]
50'
45%
51' to 99'
35% + [(100' - lot width) x 0.2]
100' or more
35%
 
(Ord. 94-2, 2-15-1994)