LA 341 Fall 1999

Practical 11-- example

CITYGreen Analysis

Before proposed changes

now

+30yrs

Summary Report: empark Scenario 1
Date: 11/20/99

Site Statistics............................
Total Area:       5.46 ac
Number of Homes: 8
Canopy Area:      0.51 ac (9%)
Grass Area:       3.85 ac (70%)
Imperv Area:      0.79 ac (14%)
Building Area:    0.31 ac (6%)
Water Area:       ~ ac (~%)
Hydrologic Soil: C
Percent Slope:    2.0
Pond Percent:     0
Rainfall Type:    II
Precipitation:    4.00 in
Runoff Volume:    2.22 in

Tree Statistics............................
Tree Count:           10
Avg Health Class:     3.1
Avg dbh:              17.7 in
Avg dbh Class:        2.2
Avg Ht Class:         2.5
Ownership (V|B|Unk): 0%|0%|100%
Dominant Species:     AIL (10%)
Number of Species:    10

Carbon Benefits............................
Carbon Storage: 22.65 tons
Carbon Sequestration: 0.04 tons/yr

Pollution Removal Benefits.................
Ozone:                $53.64 (17.5lbs)
SO2:                  $4.08 (5.4lbs)
NO2:                  $30.76 (10.0lbs)
PM10:                 $30.95 (15.1lbs)
CO:                   $0.87 (2.0lbs)

Energy Benefits............................
Total Savings:        $0.00
Savings per Home:     $0.00
Total KWH Savings:    0.0
KWH Savings per Home: 0.0

Stormwater Benefits........................
Runoff Reduction: 5.5%
Time of Concentration Increase: 5.3%
Peak Flow Reduction: 8.0%
Storage Volume (trees removed): 2576 cubic feet

Summary Report: empark Scenario 2
Date: 11/20/99

Site Statistics............................
Total Area:       5.46 ac
Number of Homes: 8
Canopy Area:      0.63 ac (11%)
Grass Area:       3.73 ac (68%)
Imperv Area:      0.79 ac (14%)
Building Area:    0.31 ac (6%)
Water Area:       ~ ac (~%)
Hydrologic Soil: C
Percent Slope:    2.0
Pond Percent:     0
Rainfall Type:    II
Precipitation:    4.00 in
Runoff Volume:    2.21 in

Tree Statistics............................
Tree Count:           9
Avg Health Class:     0.0
Avg dbh:              23.4 in
Avg dbh Class:        2.8
Avg Ht Class:         2.9
Ownership (V|B|Unk): 0%|0%|100%
Dominant Species:     AIL (11%)
Number of Species:    9

Carbon Benefits............................
Carbon Storage: 27.65 tons
Carbon Sequestration: 0.05 tons/yr

Pollution Removal Benefits.................
Ozone:                $65.47 (21.3lbs)
SO2:                  $4.98 (6.6lbs)
NO2:                  $37.54 (12.2lbs)
PM10:                 $37.77 (18.4lbs)
CO:                   $1.06 (2.4lbs)

Energy Benefits............................
Total Savings:        $0.00
Savings per Home:     $0.00
Total KWH Savings:    0.0
KWH Savings per Home: 0.0

Stormwater Benefits........................
Runoff Reduction: 6.7%
Time of Concentration Increase: 6.5%
Peak Flow Reduction: 9.6%
Storage Volume (trees removed): 3131 cubic feet

With proposed changes:

now

+30yrs

Summary Report: empark Scenario 3
Date: 11/20/99

Site Statistics............................
Total Area:       5.46 ac
Number of Homes: 8
Canopy Area:      0.51 ac (9%)
Grass Area:       3.73 ac (68%)
Imperv Area:      0.79 ac (14%)
Building Area:    0.31 ac (6%)
Water Area:       ~ ac (~%)
Hydrologic Soil: C
Percent Slope:    2.0
Pond Percent:     0
Rainfall Type:    II
Precipitation:    4.00 in
Runoff Volume:    2.21 in

Tree Statistics............................
Tree Count:           18
Avg Health Class:     5.0
Avg dbh:              3.9 in
Avg dbh Class:        1.0
Avg Ht Class:         1.4
Ownership (V|B|Unk): 0%|0%|100%
Dominant Species:     RM (56%)
Number of Species:    3

Carbon Benefits............................
Carbon Storage: 16.54 tons
Carbon Sequestration: 0.37 tons/yr

Pollution Removal Benefits.................
Ozone:                $53.69 (17.5lbs)
SO2:                  $4.08 (5.4lbs)
NO2:                  $30.79 (10.0lbs)
PM10:                 $30.98 (15.1lbs)
CO:                   $0.87 (2.0lbs)

Energy Benefits............................
Total Savings:        $55.00
Savings per Home:     $6.88
Total KWH Savings:    458.3
KWH Savings per Home: 57.3

Stormwater Benefits........................
Runoff Reduction: 6.7%
Time of Concentration Increase: 6.5%
Peak Flow Reduction: 9.6%
Storage Volume (trees removed): 3131 cubic feet

Summary Report: empark Scenario 4
Date: 11/20/99

Site Statistics............................
Total Area:       5.46 ac
Number of Homes: 8
Canopy Area:      0.64 ac (12%)
Grass Area:       3.72 ac (68%)
Imperv Area:      0.79 ac (14%)
Building Area:    0.31 ac (6%)
Water Area:       ~ ac (~%)
Hydrologic Soil: C
Percent Slope:    2.0
Pond Percent:     0
Rainfall Type:    II
Precipitation:    4.00 in
Runoff Volume:    2.20 in

Tree Statistics............................
Tree Count:           18
Avg Health Class:     0.0
Avg dbh:              15.8 in
Avg dbh Class:        2.1
Avg Ht Class:         3.0
Ownership (V|B|Unk): 0%|0%|100%
Dominant Species:     RM (56%)
Number of Species:    3

Carbon Benefits............................
Carbon Storage: 28.25 tons
Carbon Sequestration: 0.05 tons/yr

Pollution Removal Benefits.................
Ozone:                $66.90 (21.8lbs)
SO2:                  $5.08 (6.8lbs)
NO2:                  $38.36 (12.5lbs)
PM10:                 $38.60 (18.8lbs)
CO:                   $1.09 (2.5lbs)

Energy Benefits............................
Total Savings:        $304.94
Savings per Home:     $38.12
Total KWH Savings:    2541.2
KWH Savings per Home: 317.6

Stormwater Benefits........................
Runoff Reduction: 6.9%
Time of Concentration Increase: 6.6%
Peak Flow Reduction: 9.9%
Storage Volume (trees removed): 3214 cubic feet

Wildlife potential:

This is the Food potential of the grown-out version of the "Before" scenario - 1=Fair, 3=Very Good, 9=No Data for this species