SW6190102_Supplement-EZ Forms_20190206

SOF STF Phase 3
Fort Bragg, Hoke County, North Carolina
Mason & Hanger Page - a.8 -

APPENDIX H
NCDEQ BIORETENTION CELL SUPPLEMENT FORMS

Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 1 Date:1/10/2019
Soil Group:A
Predevelopment BUA Developed BUA
Area 0 acres Area 3.63 acres
Area 0 sf Area 158,071 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 0 cf V 10,418 cf
Predevelopment Open Area Developed Open Area
Area 5.94 acres Area 2.31 acres
Area 258,605 sf Area 100,534 sf
CN 30 CN 39
S 23.33 S 15.64
ia 4.67 in ia 3.13 in
P 1 in P 1 in
Q 0.00 in Q 0.00 in
V 0 cf V 0 cf
Area 5.94 acres Area 5.94 acres
Total 0 cf Total 10,418 cf
Storage Required 10,418 cf
Surface Area 13,572 sf
Riser 10 in
Storage Provided 11,310 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 2 Date:1/10/2019
Soil Group:A
Predevelopment BUA Developed BUA
Area 0 acres Area 1.22 acres
Area 0 sf Area 52,862 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 0 cf V 3,484 cf
Predevelopment Open Area Developed Open Area
Area 1.72 acres Area 0.5 acres
Area 75,048 sf Area 22,186 sf
CN 30 CN 49
S 23.33 S 10.41
ia 4.67 in ia 2.08 in
P 1 in P 1 in
Q 0.00 in Q 0.00 in
V 0 cf V 0 cf
Area 1.72 acres Area 1.72 acres
Total 0 cf Total 3,484 cf
Storage Required 3,484 cf
Surface Area 5,078 sf
Riser 9 in
Storage Provided 3,809 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 3 Date:1/10/2019
Soil Group:D
Predevelopment BUA Developed BUA
Area 0.48 acres Area 0.67 acres
Area 20,909 sf Area 29,185 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 1,378 cf V 1,924 cf
Predevelopment Open Area Developed Open Area
Area 0.53 acres Area 0.34 acres
Area 23,087 sf Area 14,810 sf
CN 77 CN 80
S 2.99 S 2.50
ia 0.60 in ia 0.50 in
P 1 in P 1 in
Q 0.05 in Q 0.08 in
V 92 cf V 103 cf
Area 1.01 acres Area 1.01 acres
Total 1,470 cf Total 2,026 cf
Storage Required 556 cf
Surface Area 1,912 sf
Riser 12 in
Storage Provided 1,912 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 4 Date:1/10/2019
Soil Group:A
Predevelopment BUA Developed BUA
Area 0 acres Area 0.33 acres
Area 0 sf Area 14,813 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 0 cf V 976 cf
Predevelopment Open Area Developed Open Area
Area 0.38 acres Area 0.05 acres
Area 16,553 sf Area 1,740 sf
CN 30 CN 39
S 23.33 S 15.64
ia 4.67 in ia 3.13 in
P 1 in P 1 in
Q 0.00 in Q 0.00 in
V 0 cf V 0 cf
Area 0.38 acres Area 0.38 acres
Total 0 cf Total 976 cf
Storage Required 976 cf
Surface Area 2,040 sf
Riser 6 in
Storage Provided 1,020 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 5 Date:1/10/2019
Soil Group:A
Predevelopment BUA Developed BUA
Area 0 acres Area 0.33 acres
Area 0 sf Area 14,221 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 0 cf V 937 cf
Predevelopment Open Area Developed Open Area
Area 0.4 acres Area 0.07 acres
Area 17,417 sf Area 3,196 sf
CN 30 CN 39
S 23.33 S 15.64
ia 4.67 in ia 3.13 in
P 1 in P 1 in
Q 0.00 in Q 0.00 in
V 0 cf V 0 cf
Area 0.4 acres Area 0.4 acres
Total 0 cf Total 937 cf
Storage Required 937 cf
Surface Area 2,040 sf
Riser 6 in
Storage Provided 1,020 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 6 Date:1/10/2019
Soil Group:A
Predevelopment BUA Developed BUA
Area 0 acres Area 0.25 acres
Area 0 sf Area 10,534 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 0 cf V 694 cf
Predevelopment Open Area Developed Open Area
Area 0.3 acres Area 0.05 acres
Area 12,860 sf Area 2,326 sf
CN 30 CN 39
S 23.33 S 15.64
ia 4.67 in ia 3.13 in
P 1 in P 1 in
Q 0.00 in Q 0.00 in
V 0 cf V 0 cf
Area 0.3 acres Area 0.3 acres
Total 0 cf Total 694 cf
Storage Required 694 cf
Surface Area 1,925 sf
Riser 6 in
Storage Provided 963 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 7 Date:1/10/2019
Soil Group:A
Predevelopment BUA Developed BUA
Area 0 acres Area 0.34 acres
Area 0 sf Area 14,555 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 0 cf V 959 cf
Predevelopment Open Area Developed Open Area
Area 0.39 acres Area 0.05 acres
Area 16,881 sf Area 2,326 sf
CN 30 CN 39
S 23.33 S 15.64
ia 4.67 in ia 3.13 in
P 1 in P 1 in
Q 0.00 in Q 0.00 in
V 0 cf V 0 cf
Area 0.39 acres Area 0.39 acres
Total 0 cf Total 959 cf
Storage Required 959 cf
Surface Area 1,925 sf
Riser 6 in
Storage Provided 963 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 8 Date:1/10/2019
Soil Group:A
Predevelopment BUA Developed BUA
Area 0 acres Area 0.24 acres
Area 0 sf Area 10,534 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 0 cf V 694 cf
Predevelopment Open Area Developed Open Area
Area 0.30 acres Area 0.05 acres
Area 12,860 sf Area 2,326 sf
CN 30 CN 39
S 23.33 S 15.64
ia 4.67 in ia 3.13 in
P 1 in P 1 in
Q 0.00 in Q 0.00 in
V 0 cf V 0 cf
Area 0.30 acres Area 0.30 acres
Total 0 cf Total 694 cf
Storage Required 694 cf
Surface Area 1,925 sf
Riser 6 in
Storage Provided 963 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 9 Date:1/10/2019
Soil Group:A
Predevelopment BUA Developed BUA
Area 0 acres Area 0.24 acres
Area 0 sf Area 10,534 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 0 cf V 694 cf
Predevelopment Open Area Developed Open Area
Area 0.30 acres Area 0.05 acres
Area 12,860 sf Area 2,326 sf
CN 30 CN 39
S 23.33 S 15.64
ia 4.67 in ia 3.13 in
P 1 in P 1 in
Q 0.00 in Q 0.00 in
V 0 cf V 0 cf
Area 0.30 acres Area 0.30 acres
Total 0 cf Total 694 cf
Storage Required 694 cf
Surface Area 1,925 sf
Riser 6 in
Storage Provided 963 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 10 Date:1/10/2019
Soil Group:A
Predevelopment BUA Developed BUA
Area 0 acres Area 0.25 acres
Area 0 sf Area 11,026 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 0 cf V 727 cf
Predevelopment Open Area Developed Open Area
Area 0.33 acres Area 0.08 acres
Area 14,375 sf Area 3,349 sf
CN 30 CN 39
S 23.33 S 15.64
ia 4.67 in ia 3.13 in
P 1 in P 1 in
Q 0.00 in Q 0.00 in
V 0 cf V 0 cf
Area 0.33 acres Area 0.33 acres
Total 0 cf Total 727 cf
Storage Required 727 cf
Surface Area 2,040 sf
Riser 6 in
Storage Provided 1,020 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Discrete SCS Curve Number Method (NCDEQ Stormwater BMP Manual 3.3.2)
Location:Bioretention Area 11 Date:1/10/2019
Soil Group:B
Predevelopment BUA Developed BUA
Area 0 acres Area 0.33 acres
Area 0 sf Area 14,375 sf
CN 98 CN 98
S 0.20 S 0.20
ia 0.04 in ia 0.04 in
P 1 in P 1 in
Q 0.79 in Q 0.79 in
V 0 cf V 947 cf
Predevelopment Open Area Developed Open Area
Area 0.39 acres Area 0.06 acres
Area 16,998 sf Area 2,623 sf
CN 55 CN 61
S 8.18 S 6.39
ia 1.64 in ia 1.28 in
P 1 in P 1 in
Q 0.00 in Q 0.00 in
V 0 cf V 0 cf
Area 0.39 acres Area 0.39 acres
Total 0 cf Total 947 cf
Storage Required 947 cf
Surface Area 2,040 sf
Riser 6 in
Storage Provided 1,020 cf
Note: Runnoff depth for CN <= 70 set to 0.00 for 1.0" rainfall event based upon
TR55 Urban Hydrology for Small Watersheds Table 2-1
Quantity
Infiltration System
Bioretention Cell 11
Wet Pond
Stormwater Wetland
Permeable Pavement
Sand Filter
Rainwater Harvesting
Green Roof
Level Spreader-Filter Strip
Disconnected Impervious Surface
Treatment Swale
Dry Pond
Applicant:
Name and Title:
Organization:
Street address:
City, State, Zip:
Phone number(s):
Email:
Designer
Certification Statement:
Signature of Designer
Date
Please indicate the types, quantities and locations of SCMs that will be used on this project:
[e-mail]
Phone number(s):
F Michael Mayer
Mason & Hanger
300 W Vine St Suite 1300
Lexington, KY 40507
859-280-3557
SUPPLEMENT-EZ FORM COVER PAGE
Seal violations as well as a report being made to my professional board.
- that the information provided in the form is, to the best of my knowledge
- that the engineering plans, specifications, operation and maintenance
the information provided here.
I am aware that there are significant penalties for submitting false
information including the possibility of fines and imprisonment for knowing
and belief, true, accurate, and complete; and
agreements and other supporting information are consistent with
I certify, under penalty of law: that this Supplement-EZ form and all supporting
information were prepared under my direction or supervision;
Designer information for this project:
Location(s)
Project Name:
Address
City / Town
Fort Bragg DPW
Lee Ward
SOF Complex Phase 3
Fort Bragg
Email:
Bldg 3-1333 Butner Rd
Fort Bragg. NC 28310
Company:
Contact:
Mailing Address:
City, State, Zip:
Cover Page 1 1:31 PM 11/21/2018
BIORETENTION CELL1Drainage area number1Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft)82704 sfTotal surface water area (sq ft) sf - Sidewalk (sq ft)3400 sfTotal drainage area (sq ft)258605 sf - Roof (sq ft)71967 sfBUA associated with existing development (sq ft) sf - Roadway (sq ft) sfProposed new BUA (sq ft)158071 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area61%Total BUA (sq ft)158071 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)10418 cfDesign volume of SCM (cu ft)11310 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)428 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)442 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)14 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)13572 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)11310 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)10 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?Yes#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in) in #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in) in#4 Infiltration rate of the in situ soil (inch/hour)14.4 in/hr#4 Diameter of the underdrain pipes (if applicable) in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)444 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)447 ft #12 How many clean out pipes are being installed?0#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inTHE DRAINAGE AREABIORETENTION CELL MDC FROM 02H .1052Underdrain pipes are not required as infiltration rate greater than 2in/hr. However limited underdrains provided for factor of safety. 2.5 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Additional storage provided up to emergency overflow, but not for peak attenuation volume. Maximum depth of storage of cell to emergency overflow is 24". Emergency overflow weir designed for 100yr storm event. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.Break down of BUA in the drainage area (both new and existing):COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMStormwater program(s) that apply (please specify):EISA 438, ARMY LID, FORT BRAGG IDGGENERAL MDC FROM 02H .1050ADDITIONAL INFORMATIONPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.Minimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.SOF Complex Phase 3Bioretention110:28 AM 1/10/2019
BIORETENTION CELLSOF Complex Phase 32Drainage area number2Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft)26397 sfTotal surface water area (sq ft) sf - Sidewalk (sq ft)1400 sfTotal drainage area (sq ft)75048 sf - Roof (sq ft)25065 sfBUA associated with existing development (sq ft) sf - Roadway (sq ft) sfProposed new BUA (sq ft)52862 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area70%Total BUA (sq ft)52862 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)3484 cfDesign volume of SCM (cu ft)3809 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)431 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)442 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)12 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)5078 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)3809 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)9 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?No#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in) in #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in) in#4 Infiltration rate of the in situ soil (inch/hour)5.2 in/hr#4 Diameter of the underdrain pipes (if applicable) in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)448 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)452 ft #12 How many clean out pipes are being installed?0#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inTHE DRAINAGE AREABIORETENTION CELL MDC FROM 02H .1052Break down of BUA in the drainage area (both new and existing):COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMStormwater program(s) that apply (please specify):EISA 438, ARMY LID, FORT BRAGG IDGPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Underdrain pipes are not required as infiltration rate greater than 2in/hr. However limited underdrains provided for factor of safety. 5.0 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Additional storage provided up to emergency overflow, but not for peak attenuation volume. Maximum depth of storage of cell to emergency overflow is 24". Emergency overflow weir designed for 100yr storm event. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.GENERAL MDC FROM 02H .1050Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.Minimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.ADDITIONAL INFORMATIONBioretention210:28 AM 1/10/2019
BIORETENTION CELLSOF Complex Phase 33Drainage area number3Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft) sfTotal surface water area (sq ft) sf - Sidewalk (sq ft) sfTotal drainage area (sq ft)43998 sf - Roof (sq ft) sfBUA associated with existing development (sq ft)20909 sf - Roadway (sq ft)29185 sfProposed new BUA (sq ft)8276 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area66%Total BUA (sq ft)29185 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)556 cfDesign volume of SCM (cu ft)1912 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)453 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)455 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)2 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)1912 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)1912 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)12 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?No#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in)na #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in)na#4 Infiltration rate of the in situ soil (inch/hour).5 in/hr#4 Diameter of the underdrain pipes (if applicable)8 in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)458 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)461 ft #12 How many clean out pipes are being installed?5#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inTHE DRAINAGE AREABIORETENTION CELL MDC FROM 02H .1052Break down of BUA in the drainage area (both new and existing):COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMMinimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.ADDITIONAL INFORMATIONPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Underdrain pipes are required as infiltration rate less than 2in/hr. 2.0 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.Stormwater program(s) that apply (please specify):EISA 438, ARMY LID, FORT BRAGG IDGGENERAL MDC FROM 02H .1050Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.Bioretention310:28 AM 1/10/2019
BIORETENTION CELLSOF Complex Phase 34Drainage area number4Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft)14513 sfTotal surface water area (sq ft) sf - Sidewalk (sq ft)300 sfTotal drainage area (sq ft)16509 sf - Roof (sq ft) sfBUA associated with existing development (sq ft) sf - Roadway (sq ft) sfProposed new BUA (sq ft)14813 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area90%Total BUA (sq ft)14813 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)976 cfDesign volume of SCM (cu ft)1020 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)435 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)455 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)20 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)2040 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)1020 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)6 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?No#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in) in #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in) in#4 Infiltration rate of the in situ soil (inch/hour)15.0 in/hr#4 Diameter of the underdrain pipes (if applicable) in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)457 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)460 ft #12 How many clean out pipes are being installed?0#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inTHE DRAINAGE AREABIORETENTION CELL MDC FROM 02H .1052Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.Minimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.ADDITIONAL INFORMATIONPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Break down of BUA in the drainage area (both new and existing):COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMStormwater program(s) that apply (please specify):EISA 438, ARMY LID, FORT BRAGG IDGGENERAL MDC FROM 02H .1050Underdrain pipes are not required as infiltration rate greater than 2in/hr. However limited underdrains provided for factor of safety. 2.0 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Additional storage provided up to emergency overflow, but not for peak attenuation volume. Maximum depth of storage of cell to emergency overflow is 24". Emergency overflow weir designed for 100yr storm event. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.Bioretention410:28 AM 1/10/2019
BIORETENTION CELLSOF Complex Phase 35Drainage area number5Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft)14221 sfTotal surface water area (sq ft) sf - Sidewalk (sq ft) sfTotal drainage area (sq ft)17417 sf - Roof (sq ft) sfBUA associated with existing development (sq ft) sf - Roadway (sq ft) sfProposed new BUA (sq ft)14221 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area82%Total BUA (sq ft)14221 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)937 cfDesign volume of SCM (cu ft)1020 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)435 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)456 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)21 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)2040 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)1020 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)6 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?No#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in) in #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in) in#4 Infiltration rate of the in situ soil (inch/hour)15.0 in/hr#4 Diameter of the underdrain pipes (if applicable) in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)458 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)461 ft #12 How many clean out pipes are being installed?0#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inTHE DRAINAGE AREAEISA 438, ARMY LID, FORT BRAGG IDGGENERAL MDC FROM 02H .1050Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.Minimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.Break down of BUA in the drainage area (both new and existing):COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMStormwater program(s) that apply (please specify):BIORETENTION CELL MDC FROM 02H .1052ADDITIONAL INFORMATIONPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Underdrain pipes are not required as infiltration rate greater than 2in/hr. However limited underdrains provided for factor of safety. 2.0 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Additional storage provided up to emergency overflow, but not for peak attenuation volume. Maximum depth of storage of cell to emergency overflow is 24". Emergency overflow weir designed for 100yr storm event. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.Bioretention510:28 AM 1/10/2019
BIORETENTION CELLSOF Complex Phase 36Drainage area number6Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft)10234 sfTotal surface water area (sq ft) sf - Sidewalk (sq ft)300 sfTotal drainage area (sq ft)12860 sf - Roof (sq ft) sfBUA associated with existing development (sq ft) sf - Roadway (sq ft) sfProposed new BUA (sq ft)10534 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area82%Total BUA (sq ft)10534 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)694 cfDesign volume of SCM (cu ft)963 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)435 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)455 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)20 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)1925 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)963 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)6 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?No#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in) in #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in) in#4 Infiltration rate of the in situ soil (inch/hour)15.0 in/hr#4 Diameter of the underdrain pipes (if applicable) in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)457 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)460 ft #12 How many clean out pipes are being installed?0#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inCOMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMStormwater program(s) that apply (please specify):EISA 438, ARMY LID, FORT BRAGG IDGGENERAL MDC FROM 02H .1050Break down of BUA in the drainage area (both new and existing):THE DRAINAGE AREABIORETENTION CELL MDC FROM 02H .1052Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.Minimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.ADDITIONAL INFORMATIONPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Underdrain pipes are not required as infiltration rate greater than 2in/hr. However limited underdrains provided for factor of safety. 2.0 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Additional storage provided up to emergency overflow, but not for peak attenuation volume. Maximum depth of storage of cell to emergency overflow is 24". Emergency overflow weir designed for 100yr storm event. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.Bioretention610:28 AM 1/10/2019
BIORETENTION CELLSOF Complex Phase 37Drainage area number7Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft)14555 sfTotal surface water area (sq ft) sf - Sidewalk (sq ft) sfTotal drainage area (sq ft)16881 sf - Roof (sq ft) sfBUA associated with existing development (sq ft) sf - Roadway (sq ft) sfProposed new BUA (sq ft)14555 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area86%Total BUA (sq ft)14555 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)959 cfDesign volume of SCM (cu ft)963 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)436 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)456 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)20 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)1925 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)963 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)6 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?No#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in) in #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in) in#4 Infiltration rate of the in situ soil (inch/hour)15.0 in/hr#4 Diameter of the underdrain pipes (if applicable) in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)458 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)461 ft #12 How many clean out pipes are being installed?0#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inBreak down of BUA in the drainage area (both new and existing):COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMStormwater program(s) that apply (please specify):EISA 438, ARMY LID, FORT BRAGG IDGTHE DRAINAGE AREAPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Underdrain pipes are not required as infiltration rate greater than 2in/hr. However limited underdrains provided for factor of safety. 2.0 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Additional storage provided up to emergency overflow, but not for peak attenuation volume. Maximum depth of storage of cell to emergency overflow is 24". Emergency overflow weir designed for 100yr storm event. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.GENERAL MDC FROM 02H .1050Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.Minimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.ADDITIONAL INFORMATIONBIORETENTION CELL MDC FROM 02H .1052Bioretention710:28 AM 1/10/2019
BIORETENTION CELLSOF Complex Phase 38Drainage area number8Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft)10234 sfTotal surface water area (sq ft) sf - Sidewalk (sq ft)300 sfTotal drainage area (sq ft)12860 sf - Roof (sq ft) sfBUA associated with existing development (sq ft) sf - Roadway (sq ft) sfProposed new BUA (sq ft)10534 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area82%Total BUA (sq ft)10534 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)694 cfDesign volume of SCM (cu ft)963 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)435 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)455 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)20 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)1925 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)963 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)6 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?No#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in) in #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in) in#4 Infiltration rate of the in situ soil (inch/hour)15.0 in/hr#4 Diameter of the underdrain pipes (if applicable) in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)457 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)460 ft #12 How many clean out pipes are being installed?0#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inBreak down of BUA in the drainage area (both new and existing):COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMTHE DRAINAGE AREAMinimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.ADDITIONAL INFORMATIONPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Underdrain pipes are not required as infiltration rate greater than 2in/hr. However limited underdrains provided for factor of safety. 2.0 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Additional storage provided up to emergency overflow, but not for peak attenuation volume. Maximum depth of storage of cell to emergency overflow is 24". Emergency overflow weir designed for 100yr storm event. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.Stormwater program(s) that apply (please specify):EISA 438, ARMY LID, FORT BRAGG IDGGENERAL MDC FROM 02H .1050Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.BIORETENTION CELL MDC FROM 02H .1052Bioretention810:28 AM 1/10/2019
BIORETENTION CELLSOF Complex Phase 39Drainage area number9Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft)10234 sfTotal surface water area (sq ft) sf - Sidewalk (sq ft)300 sfTotal drainage area (sq ft)12860 sf - Roof (sq ft) sfBUA associated with existing development (sq ft) sf - Roadway (sq ft) sfProposed new BUA (sq ft)10534 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area82%Total BUA (sq ft)10534 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)694 cfDesign volume of SCM (cu ft)963 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)436 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)456 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)20 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)1925 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)963 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)6 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?No#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in) in #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in) in#4 Infiltration rate of the in situ soil (inch/hour)15.0 in/hr#4 Diameter of the underdrain pipes (if applicable) in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)458 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)461 ft #12 How many clean out pipes are being installed?0#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inTHE DRAINAGE AREABIORETENTION CELL MDC FROM 02H .1052Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.Minimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.ADDITIONAL INFORMATIONPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Break down of BUA in the drainage area (both new and existing):COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMStormwater program(s) that apply (please specify):EISA 438, ARMY LID, FORT BRAGG IDGGENERAL MDC FROM 02H .1050Underdrain pipes are not required as infiltration rate greater than 2in/hr. However limited underdrains provided for factor of safety. 2.0 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Additional storage provided up to emergency overflow, but not for peak attenuation volume. Maximum depth of storage of cell to emergency overflow is 24". Emergency overflow weir designed for 100yr storm event. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.Bioretention910:28 AM 1/10/2019
BIORETENTION CELLSOF Complex Phase 310Drainage area number10Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft)10726 sfTotal surface water area (sq ft) sf - Sidewalk (sq ft)300 sfTotal drainage area (sq ft)14375 sf - Roof (sq ft) sfBUA associated with existing development (sq ft) sf - Roadway (sq ft) sfProposed new BUA (sq ft)11026 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area77%Total BUA (sq ft)11026 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)727 cfDesign volume of SCM (cu ft)1020 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)435 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)455 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)20 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)2040 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)1020 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)6 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?No#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in) in #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in) in#4 Infiltration rate of the in situ soil (inch/hour)15.0 in/hr#4 Diameter of the underdrain pipes (if applicable) in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)457 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)460 ft #12 How many clean out pipes are being installed?0#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inTHE DRAINAGE AREABIORETENTION CELL MDC FROM 02H .1052EISA 438, ARMY LID, FORT BRAGG IDGGENERAL MDC FROM 02H .1050Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.Minimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.Break down of BUA in the drainage area (both new and existing):COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMStormwater program(s) that apply (please specify):ADDITIONAL INFORMATIONPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Underdrain pipes are not required as infiltration rate greater than 2in/hr. However limited underdrains provided for factor of safety. 2.0 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Additional storage provided up to emergency overflow, but not for peak attenuation volume. Maximum depth of storage of cell to emergency overflow is 24". Emergency overflow weir designed for 100yr storm event. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.Bioretention1010:28 AM 1/10/2019
BIORETENTION CELLSOF Complex Phase 311Drainage area number11Total coastal wetlands area (sq ft) sf - Parking / driveway (sq ft)14075 sfTotal surface water area (sq ft) sf - Sidewalk (sq ft)300 sfTotal drainage area (sq ft)16988 sf - Roof (sq ft) sfBUA associated with existing development (sq ft) sf - Roadway (sq ft) sfProposed new BUA (sq ft)14375 sf - Other, please specify in the comment box below (sq ft) sfPercent BUA of drainage area85%Total BUA (sq ft)14375 sfDesign rainfall depth (in)1.0 inMinimum volume required (cu ft)947 cfDesign volume of SCM (cu ft)1020 cf#1 Is the SCM sized to treat the SW from all surfaces at build-out?Yes#7 If applicable, with the SCM be cleaned out after construction?Yes#2 Is the SCM located on or near contaminated soils?No#8 Does the mainetenance access comply with General MDC (8)?Yes#3 What are the side slopes of the SCM (H:V)?3:1#9 Does the drainage easement comply with General MDC (9)?Yes#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes? No#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?Yes#4 Are the inlets, outlets, and receiving stream protected from erosion (10-year storm)? Yes#11 Is there an O&M Agreement that complies with General MDC (11)?Yes#5 Is there a a bypass for flows in excess of the design flow?Yes#12 Is there an O&M Plan that complies with General MDC (12)?Yes#6 What is the method for dewatering the SCM for maintenance?Other#13 Was the SCM designed by an NC licensed professional?Yes#1 SHWT elevation (fmsl)436 ft #6 Percentage of medium to coarse washed sand by volume 85%#1 Bottom of the bioretention cell (fmsl)456 ft #6 Percentage of fines (silt and clay) by volume10%#1 Distance from bottom to SHWT (feet)20 ft #6 Percentage of organic matter by volume 5%#2 Surface area of the bioretention cell (square feet)2040 sf#6 Type of organic materialEngineered Fill#2 Design volume of the bioretention cell (cubic feet)1020 cf#7 Phosphorus Index (P-Index) of media (unitless) 10#2 Ponding depth of the design storm (inches)6 in#8 Will compaction be avoided during construction?Yes#3 Is the bioretention cell used for peak attenuation?No#9 Will cell be maintained to a one inch/hour standard?Yes#3 Depth of peak attenuation over planting surface (in) in #10 Describe the planting plan:#3 Height of peak attenuation outlet above the planting surface (in) in#4 Infiltration rate of the in situ soil (inch/hour)11.7 in/hr#4 Diameter of the underdrain pipes (if applicable) in#4 Does the design include Internal Water Storage (IWS)?Yes #11 Depth of mulch, if applicable (inches) in#4 if so, elevation of the top of the IWS (fmsl)458 ft #11 Type of mulch, if applicablena#4 Elevation of the planting surface (fmsl)461 ft #12 How many clean out pipes are being installed?0#5 Will the cell contain trees and shrubs?No#12 Briefly describe the pretreatment that will be used:#5 Media depth (inches)30 inTHE DRAINAGE AREABIORETENTION CELL MDC FROM 02H .1052COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAMStormwater program(s) that apply (please specify):EISA 438, ARMY LID, FORT BRAGG IDGGENERAL MDC FROM 02H .1050Break down of BUA in the drainage area (both new and existing):Contractor to provide landscape establishment to achieve 100% coverage throughout site in 12 months. Sod is desired by the user for cell. User requires no hardwood mulch within cell.Minimum 3' sod strip. All outlet headwalls to cell have rip-rap outlet protection per NCDEQ requirements.ADDITIONAL INFORMATIONPlease use this space to provide any additional information about this bioretention cell that you think is relevant to the review:Underdrain pipes are not required as infiltration rate greater than 2in/hr. However limited underdrains provided for factor of safety. 2.0 feet of open graded aggregate being provided under engineered fill/media depth in order to provide additional storage volume within cell to meet requirements for EISA 438. This IWS is in addition to IWS within the media mix. Total IWS greater than 48" for all cells. Additionally, behive grated catch basins are provided as first-line overflow, above required storage volume. Additional storage provided up to emergency overflow, but not for peak attenuation volume. Maximum depth of storage of cell to emergency overflow is 24". Emergency overflow weir designed for 100yr storm event. Project based entirely within Fort Bragg (US Gov't property). No easements required. User requires no hardwood mulch due to maintenance issues.Bioretention1110:28 AM 1/10/2019