steps to complete site capacity calculations 1. base site area 2. net site area 3. density...

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Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface and Floor Area 4. Resource Protected Land 5. Recreational Land (Residential Development) 6. Total Open Space Area

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Page 1: Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface

Steps to Complete Site Capacity Calculations

1. Base Site Area

2. Net Site Area

3. DensityResidential = Dwelling Units

Nonresidential = Impervious Surface and Floor Area

4. Resource Protected Land

5. Recreational Land (Residential Development)

6. Total Open Space Area

Page 2: Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface

Table 1. Calculation of Base Site AreaStep 1 Gross Area of property - from survey 33.71Step 2 Subtract land area contained in roads, ultimate

righs-of-way and existing access easements. 0.00Step 3 Subtract land that is not contiguous

A. Portion of property that is physically separate from parent parcel and can be developed on its own. 0.00

B. A separate parcel that is rendered physically inaccessible to the main parcel and cannot be developed on its own. 0.00

C. Subtract land that was reserved for resource protection or other open space purposes in a previously approved subdivision plat (e.g., floodplain or recreation area) 0.00

D. Subtract land under a different zoning classification or in a different use classification (i.e. residential vs. nonresidential). 0.00Equals "Base Site Area" 33.71

Step 1: Base Site Area Calculation

Page 3: Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface

Take Base Site Area 33.71Subtract Regulatory floodplains and floodprone areas. - 3.50Subtract Wetlands (1/4 Ac. +) - 1.40Subtract Non-linear water bodies (e.g. lakes, ponds) - 0.00Subtract Linear water bodies (e.g. channels) - 0.00Equals "Net Site Area" 28.81

Step 2: Net Site Area Calculation

Table 2. Net Site Area Calculation

Page 4: Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface

Table 3. Maximum Dwelling Unit CalculationStep 1 28.81

Step 2 x 1.33= 38.32

Step 3: Dwelling Unit Calculation

Take "Net Site Area" from Table 2.Multiply by Zoning District Maximum Density Factor (from UDO Art. 7)Equals Maximum Number of Units

Page 5: Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface

Table 4. Resource-Protected Land Area Calculation

Resource Type

Land Area of

Resource (acres) Protection Ratio

Resource-Protected Land

Area

Regulatory floodplains and floodprone areas with 100 acres or more tributary drainage area 3.50 x 1.00 = 3.50Wetlands (1/4 Ac. +) 1.40 x 1.00 = 1.40Non-linear water bodies 0.00 x 1.00 = 0.00Linear water bodies 0.00 x 1.00 = 0.00Wetland and Water Body Buffers 0.73 x 0.80 = 0.58Mature woodlands & Groves (Subtract Floodplain 0.8) 2.86 x 0.70 = 2.00Young woodlands (Subtract 1/2 Wetland Buffer) 6.35 x 0.50 = 3.18Equals Total "Resource-Protected Land Area" 10.66

Step 4: Resource-Protected Land Area Calculation

Page 6: Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface

Table 5. Recreational Land Area Calculation

Step 1 38

Step 2 x 1.07= 1.07Equals Total "Recreation Land Area" Required (Acres)

Multiply by 0.028 (based on Lake County average household size)

Take Maximum Dwelling Units Allowed

Step 5: Recreational Land Area Calculation

Table 6a. Calculating Required Open Space (Conventional Development)

Step 1 10.66

Step 2 + 1.07

= 11.73

Take total "Resource-Protected Land Area"

Step 6: Total Open Space Land Area Calculation

Equals Conventional Open Space Requirement (Acres)

Add total "Recreation Land Area"

Page 7: Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface

Step 1 10.66

Step 2 + 1.07

= 11.73

Step1 33.71

Step 2 x 0.30

Step 3 = 10.11Step 4 11.73

= 11.73

* All natural resources except non-linear water bodies may be used in meeting the minimum open space requirement.

Multiply by Zoning District Minimum Open Space RatioEquals District-Based Open Space RequirementTake Higher of "Capacity-Based" or "District-Based" Open

Table 6b. Calculating Required Open Space (Conservation Development)

Equals Minimum Open Space Requirement

Take total "Resource-Protected Land Area"

Add total "Recreation Land Area"

Equals Capacity-based Open Space Requirement (Acres)

Take "Base Site Area"

Page 8: Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface

7 SIGNIFICANT TREES

EDGE OF FLOOD PLAIN

WETLANDBUFFER

GROVE 10,000 SF CANOPY AREA

1.4 ACREWETLAND

YOUNGWOODLANDS

#003

#005

#004

#001

#007

#006

4.5 AC WETLAND(2.5 AC ON SITE)

50 FT. WETLANDBUFFER

0.10 AC (4,356 SF)WETLAND TO BE REMOVED

YOUNGWOODLANDS6.7 ACRES

#002

MATUREWOODLANDS3.5 ACRES

SIGNIFICANT TREESTAG TYPE SIZE CONDITION

001 OAK 30” GOOD 002 OAK 30” GOOD 003 OAK 32” GOOD 004 OAK 32” GOOD 005 OAK 32” GOOD 006 OAK 34” GOOD 007 OAK 24” GOOD

EXISTING EXISTING PROTECTION RESOURCE QTY/AREA REQUIREMENT GROVE 10,000 SF CANOPY 7,000 SF (70%) SIGNIFICANT TREES 7 TREES 5 TREES (70%) YOUNG WOODLAND 6.7 AC 50% (3.35 AC) MATURE WOODLAND 3.5 AC 70% (2.45 AC) FLOODPLAIN 3.5 AC 100% (3.5 AC) WETLAND 5.0 AC 100% of 4.9 AC WETLAND BUFFER 4.5 AC WETLAND 38,850 SF 80% 1.4 AC WETLAND 32,000 SF 80%

NATURALRESOURCEINVENTORY

(Per UDO, Article 4)

Page 9: Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface

NATURALRESOURCE

PLAN

4.5 AC WETLAND(2.5 AC ON SITE)

50 FT. WETLANDBUFFER

6 SIGNIFICANT TREESTO REMAIN

EDGE OF FLOOD PLAIN

WETLANDBUFFER SILT FENCE AND

TREE PROTECTION FENCEINSTALLED AT DRIPLINE

SILT FENCE ANDTREE PROTECTION FENCEINSTALLED AT DRIPLINE

SILT FENCE ANDTREE PROTECTIONFENCE

GROVE 10,000 SF CANOPY AREA2,860 SF TO BE REMOVED

1.4 ACREWETLAND

YOUNGWOODLANDS

MATURE WOODLANDS

1.05 AC. (30%)MATURE WOODLANDTO BE REMOVED

0.10 AC (4,356 SF)WETLAND TO BE REMOVED

3.35 AC. (145,926 SF)YOUNG WOODLANDTO BE REMOVED

#003

#005

#004

#001

#007

#006

SIGNIFICANT TREE#002 TO BE REMOVED

WETLAND BUFFERDISTURBANCE2,000 SF

DETENTION AREA

PARK

PARK

EXISTING EXISTING PROTECTION PROPOSED RESOURCE QTY/AREA REQUIREMENT PROTECTION GROVE 10,000 SF CANOPY 7,000 SF (70%) 7,200 SF (72%)

SIGNIFICANT TREES 7 TREES 5 TREES (70%) 6 TREES (85%) YOUNG WOODLAND 6.7 AC 50% (3.35 AC) 50% (3.35 AC/145,929 SF) MATURE WOODLAND 3.5 AC 70% (2.45 AC) 70% (2.45 AC/106,722 SF) FLOODPLAIN 3.5 AC 100% (3.5 AC) 100% (3.5 AC) WETLAND 5.0 AC 100% of 4.9 AC 100% (4.9 AC) WETLAND BUFFER 4.5 AC WETLAND 38,850 SF 80% 95% (36,850 SF) 1.4 AC WETLAND 32,000 SF 80% 100%

SIGNIFICANT TREES TAG TYPE SIZE CONDITION__IMPACT 001 OAK 30” GOOD REMOVE 002 OAK 30” GOOD SAVE 003 OAK 32” GOOD SAVE 004 OAK 32” GOOD SAVE 005 OAK 32” GOOD SAVE 006 OAK 34” GOOD SAVE 007 OAK 24” GOOD SAVE

Page 10: Steps to Complete Site Capacity Calculations 1. Base Site Area 2. Net Site Area 3. Density Residential = Dwelling Units Nonresidential = Impervious Surface

REQUIREDRESOURCEPROTECTED

AREA

4.5 AC WETLAND(2.5 AC ON SITE)

50 FT. WETLANDBUFFER

6 SIGNIFICANT TREESTO REMAIN

EDGE OF FLOOD PLAIN

WETLANDBUFFER SILT FENCE AND

TREE PROTECTION FENCEINSTALLED AT DRIPLINE

SILT FENCE ANDTREE PROTECTION FENCEINSTALLED AT DRIPLINE

SILT FENCE ANDTREE PROTECTIONFENCE

GROVE 10,000 SF CANOPY AREA2,860 SF TO BE REMOVED

1.4 ACREWETLAND

YOUNGWOODLANDS

MATURE WOODLANDS

1.05 AC. (30%)MATURE WOODLANDTO BE REMOVED

0.10 AC (4,356 SF)WETLAND TO BE REMOVED

3.35 AC. (145,926 SF)YOUNG WOODLANDTO BE REMOVED

#003

#005

#004

#001

#007

#006

SIGNIFICANT TREE#002 TO BE REMOVED

WETLAND BUFFERDISTURBANCE2,000 SF

DETENTION AREA

PARK

PARK

MINIMUM PROTECTIONAREA REQUIREMENT – 13.65 AC

*Wetland buffer overlaps woodland area and is subtracted for total area requirement

PROTECTION RESOURCE AREA REQUIREMENT GROVE 10,000 SF CANOPY 7,000 SF (70%) 0.16 AC

YOUNG WOODLAND 6.7 AC 50% (3.35 AC) 2.35 AC* MATURE WOODLAND 3.5 AC 70% (2.45 AC) 1.45 AC* FLOODPLAIN 3.5 AC 100% (3.5 AC) 3.50 AC WETLAND 5.0 AC 100% of 4.9 AC 4.90 AC WETLAND BUFFER 4.5 AC WETLAND 38,850 SF 80% (31,080 SF) 0.71 AC 1.4 AC WETLAND 32,000 SF 80% (25,600 SF) 0.58 AC