SW4070701_Plan (Site)_20200213

PHASE 3 PROPOSED SITE INFORMATION:
PLAN
PHASE 1 PREVIOUSLY APPROVED SITE INFORMATION:
1. TOTAL AREA = 118.26 AC. = 5,151,405.60 SQ. FT.
2. TOTAL UNITS = 268
SINGLE FAMILY = 108 ( INCLUDES DUPLEX SITES )
MULTI FAMILY = 32 BUILDINGS X 5 UNITS = 160
3. IMPERVIOUS CALCULATION
MAX IMPERVIOUS AREA ALLOWED = 5,151,405.60 SO. FT X 0.12 = 618,167.67 SQ. FT,
= 12 %
IMPERVIOUS AREA PROVIDED
SINGLE FAMILY SITES :
SINGLE UNIT = 48 UNITS X 1,488 SQ. FT. = 71,424 SQ. FT.
DUPLEX UNIT = 30 UNITS X 2,776 SQ. FT. = 83,280 SQ. FT.
TOTAL = 154,704 SQ. FT.
MULTI FAMILY DWELLING UNITS = 32 UNITS X 2,400 SQ. FT. = 76,800 SO. FT.
COMMUNITY CENTER = 16,065 SO. FT.
ROAD AREA = 224,552 SQ. FT.
PARKING AREAS = 104,160 SQ. FT.
154,704 SQ. FT. + 76,800 SQ. FT. + 16,065 SQ. FT + 224,552.00 SQ. FT
+ 104,160 SQ. FT. = 576,281 SQ. FT.
576,281 SQ. FT. / 5,151,405.60 SQ. FT = 11.2 %
PHASE 2 PREVIOUSLY APPROVED SITE INFORMATION:
STATE STORMWATER PERMIT NO. SW4070701
1. TOTAL AREA = 58.18 AC. = 2,534,321 SQ. FT.
SOUTH SIDE OF RIDGE (WATERSHED AREA) = 1,662,620 SQ. FT.
SOUTH SIDE OF RIDGE (FOSCOE ZONE) = 70,352 SQ. FT.
NORTH SIDE OF RIDGE (COUNTY) = 801,406 SQ. FT.
2. TOTAL UNITS = 156
SINGLE FAMILY = 12
MULTI FAMILY = 144
WATERSHED :
3. IMPERVIOUS CALCULATION (SOUTH SIDE OF RIDGE & FOSCOE ZONE)
MAX IMPERVIOUS AREA ALLOWED = 1,732,972 SQ. FT X 12.0% = 207,957 SQ. FT.
EXCESS AREA (PHASE 1) 41,887 SQ. FT.
EXCESS AREA (PHASE 2) 6,680 SQ.FT.
MAX IMPERVIOUS AREA ALLOWED = 256,524 SQ. FT.
IMPERVIOUS AREA PROPOSED :
SINGLE FAMILY UNITS = 12 UNITS = 15,432 SQ. FT.
MULTI FAMILY DWELLING UNITS = 10 BUILDINGS = 72,000 SQ. FT.
TOTAL = 87,432 SQ. FT.
ROAD AREA = 112,725 SQ. FT.
PARKING AREAS = 48,763 SQ. FT.
TOTAL IMPERVIOUS AREA PROPOSED = 248,920 SQ. FT. (11.94%)
PHASE 4 PROPOSED SITE INFORMATION:
STATE STORMWATER PERMIT NO S1AI4070701 MODIFICATION
STATE STORMWATER PERMIT NO. SW4060501
1. TOTAL AREA = 54.15 AC. = 2,358,774 SQ. FT. MINUS 2220 SQ.FT. (ESTIMATED SURFACE WATER) = 2,356,554 SQ.FT.
1. TOTAL AREA = 121.75 AC. = 5,303,430 SQ. FT.
SOUTH SIDE OF RIDGE (WATERSHED AREA) = 1,736,808 SQ. FT.
SOUTH SIDE OF RIDGE (WATERSHED AREA) = 2,744,941 SQ. FT.
NORTH SIDE OF RIDGE (TOWARD BIG BRANCH) = 621,966 SQ. FT.
2. TOTAL BUILDINGS
SOUTH SIDE OF RIDGE (FOSCOE) = 2,558,489 SQ. FT.
MULTI FAMILY = 19
2. TOTAL UNITS = 307
CLUBHOUSE AREA
SINGLE FAMILY = 99
WATERSHED: WATAUGA RIVER BASIN, (B, TR, HQW)
3. IMPERVIOUS CALCULATION:
MULTI FAMILY = 208
IMPERVIOUS AREA PROPOSED
WATERSHED
MULTI FAMILY BUILDINGS = 19 BUILDINGS = 96,364 SQ. FT.
3. IMPERVIOUS CALCULATION (SOUTH SIDE OF RIDGE)
CLUBHOUSE BUILDINGS = 12,292 SQ. FT.
MAX IMPERVIOUS AREA ALLOWED = 5,303,430 SQ. FT X 12.0% = 636,412 SQ. FT.
TOTAL = 108,656 SQ. FT.
IMPERVIOUS AREA PROPOSED
SINGLE FAMILY LOTS = 17 LOTS X 5,000 SQ. FT. = 85,000 SQ. FT.
ROAD AREA = 48,940 SQ. FT.
SINGLE FAMILY UNITS = 12 UNITS = 15,432 SQ. FT.
PARKING AREAS = 109,162 SQ. FT.
SIDEWALKS = 11,571 SQ. FT.
DUPLEX UNIT = 25 BUILIDINGS = 64,850 SQ. FT.
TOTAL IMPERVIOUS AREA PROPOSED = 278,329 SQ. FT. (ECHOTA IV)
TOTAL = 165,282 SQ. FT. _
PERCENT IMPERVIOUS = 278,329/2,356,554 SQ. FT. = 11.81%
MULTI FAMILY DWELLING UNITS = 33 BUILDINGS = 93,441 SQ. FT.
COMMUNITY CENTER = 6,916 SQ. FT.
ROAD AREA & PARKING AREAS = 364,093 SQ. FT.
TOTAL IMPERVIOUS AREA PROPOSED = 629,732 SQ. FT. (11.87%)
EXISTING,,
ECHOTA II
EXTENSION
EXISTING -
ECHOTA II
DEVELOPMENT
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