SW3170601_Supplement-EZ Form_20170606

SUPPLEMENT -EZ FORM COVER PAGE
Please indicate the types, quantities and locations of SCMs that will be used on this project
Quantity Location(s)
Infiltration System
Bioretention Cell
Wet Pond 4 Lot 40, Lot 62, Lot 111, Lot' 197
Stormwater Wetland
Permeable Pavement
Sand Filter
Rainwater Harvesting
Green Roof
Level Spreader -Filter Strip
Disconnected Impervious Surface
Treatment Swale
Dry Pond
Designer information for this project:
Name and Title:
John H. Ross, P.E.
Organization.
Eagle Engineering, Inc.
Street address:
2013-A Van Buren Ave.
City, State, Zip
Indian Trail, NC 28079
Phone number(s):
704-882-4222
Email:
[e-mail]
Designer
a SEA =
0.. 1495
Signature of Designer
/ Zo/q-
I Date
Project Name:
Moore Farm
Address
Waxhaw-Indian Trail Road
City / Town
Union Coupty Unincorporated
Applicant:
Company
Graham Enterprises of the Carolinas, LLC
Contact
Melvin F. Graham
Mailing Address:
PO Box 78926 '
City, State, Zip.
Weddington, NC 28173
Phone number(s)
704-552-5338
Email
[e-mail]
Certification Statement
I certify, under penalty of law that this Supplement -EZ form and all supporting
information were prepared under my direction or supervision;
- that the information provided in the form is, to the best of my knowledge
and belief, true, accurate, and complete, and
- that the engineering plans, specifications, operation and maintenance
agreements and other supporting information are consistent with
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
violations as well as a report being made to my professional board
Cover Page 1 4.21 PM 6/2/2017

WETPOND
Moore Farm
THE DRAINAGE AREA
Drainage area number
1
Break down of BUA in the drainage area (both new and existing):
1
Total coastal wetlands area (sq ft)
Parking / driveway (sq ft)
Total surface water area (sq ft)
Sidewalk (sq ft)
21500 sf
Total drainage area (sq ft)
742567 sf
Roof (sq ft)
216000 sf
BUA associated with existing development (sq ft)
Roadway (sq ft)
59107 sf
Proposed new BUA (sq ft)
296607 sf
Other, please specify in the comment box below (sq ft)
Percent BUA of drainage area
40%
Total BUA (sq ft)
296607 sf
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
Stormwater program(s) that apply (please specify)
Design rainfall depth (in)
1 0 in.
Water Quaility per NCDEQ Stormwater Design Manual
GENERAL MDC FROM 02H .1050
Minimum volume required (cu ft)
Design volume of SCM (cu ft)
25340 cf
28152 cf
#1 Is the SCM sized to treat the SW from all surfaces at build -out?
YesV#71ficable,
with the SCM be cleaned out after construction?
Yes
#2 Is the SCM located on or near contaminated soils?
'Nohe
mainetenance access comply with General MDC (8)?
Yes
#3 What are the side slopes of the SCM (H V)?
31he
drainage easement comply with General MDC (9)?
Yes
#3 Does the SCM have retaining walls, gabion walls or other engineered side slopes?
No
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)?
Yesre
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?
Yesre
an O&M Plan that complies with General MDC (12)?
Yes
#6 What is the method for dewatenng the SCM for maintenance?
WET POND MDC FROM 02H.1053
Drawdown Orifice
#13 Was the SCM designed by an NC licensed professional?
Yes
#1 Method used
SA/DA
#6 Width of the vegetated shelf (feet)
6 ft
#1 Surface area of the main permanent pool (square feet)
11686 sf
#6 Location of vegetated shelf
@ Normal Pool
#1 Volume of the main permanent pool (cubic feet)
35856 cf
#6 Elevation of top of shelf (fmsl)
600 5 It
#2 Average depth of the main pool (feet)
3 ft
#6 Elevation of bottom of shelf (fmsl)
599.5 ft
#2 Was the vegetated shelf included in the calculation of average depth?
No
#6 Slope of vegetated shelf (H V)
61
#2 Elevation of the bottom of the permanent pool (fmsl)
595 5 ft
#7 Diameter of drawdown onfice (inches)
2.5 in
#2 Elevation of the top of the permanent pool (fmsl)
600 0 ft
#7 Drawdown time for the temporary pool (hours)
77 hrs
#2 Elevation of the top of the temporary pool (fmsl)
601 25 ft
#7 Does the onfice drawdown from below the top surface of the permanent pool?
Yes
#3 Depth provided for sediment storage (inches)
6 in
#8 Does the pond minimize impacts to the receiving channel from the 1 -yr, 24 -hr storm?
Yes
#4 Are the inlet(s) and outlet located in a manner that avoids short-circuiting?
Yes
#9 Are fountains proposed?
No
#4 Descnbe any measures, such as berms or baffles, that will be taken to improve the flow path
#9 If yes, is documentation provided per Wet Pond MDC (9)?
#10 Is a trash rack or other device provided to protect the outlet system?
Yes
#5 Volume of the forebay (cubic feet)
10067
#11 Are the dam and embankment planted in non -clumping turf grass?
Yes
#5 Is this 15-20% of the volume in the main pool?
Yes
#11 Species of turf that will be used on the dam and embankment
Centipede
#5 Depth of forebay at entrance (inches)
60 in
#11 Describe the planting plan for the vegetated shelf
#5 Depth of forebay at exit (inches) 60 in
#5Does water flow out of the forebay in anon -erosive manner's LinA
#5 Clean-out depth for forebay (inches) #5 Willthe forebay be cleaned out when the depth is reduced to less than the above?
ADDITIONAL INFORMATION
Please use this space to provide any additional information about this wet pond that you think is relevant to the review
3 SPECIES OFSHALLOW LAND HERBACEOUS PLANS ON UPPER SHELF, AND 3 SPECIES OF SHALLOW-
HALLOW-#5
WAIr-i1=11 ERGENT PLANTS ON THE LOWER SHELF
'
Wet Pond 1 4 49 PM 6/2/2017

WET PORI®
Moore Farm
THE DRAINAGE AREA
Drainage area number
2
Break down of BUA in the drainage area (both new and existing) -
2
Total coastal wetlands area (sq ft)
Parking / driveway (sq ft)
Total surface water area (sq ft)
Sidewalk (sq ft)
16630 sf
Total drainage area (sq ft)
473497 sf
Roof (sq ft)
105000 sf
BUA associated with existing development (sq ft)
Roadway (sq ft)
48410 sf
Proposed new BUA (sq ft)
220040 sf
Other, please specify in the comment box below (sq ft)
50000 sf
Percent BUA of drainage area
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
ITotal BUA (sq ft)
220040 sf
Stormwater program(s) that apply (please specify)
IDesign rainfall depth (in)
1 0 in
Water Quaility per NCDEQ Stormwater Design Manual & Detention per Union County Requirements
IMinimurn volume required (cu ft)
Design volume of SCM (cu ft)
18476 cf
21398 of
GENERAL MDC FROM 02H.1050
#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 sods?
No
#8 Does the mainetenance access comply with General MDC (8)?
Yes
#3 What are the side slopes of the SCM (H V)?
31
#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? Drawdown Orifice
WET POND MDC FROM 02H.1053
1#13 Was the SCM designed by an NC licensed professional?
Yes
#1 Method used
SA/DA
#6 Width of the vegetated shelf (feet)
6 ft
#1 Surface area of the main permanent pool (square feet)
6741 sf
#6 Location of vegetated shelf
Q Normal Pool
#1 Volume of the main permanent pool (cubic feet)
25906 cf
#6 Elevation of top of shelf (fmsl)
620 5 ft
#2 Average depth of the main pool (feet)
4 ft
#6 Elevation of bottom of shelf (fmsl)
619 5 ft
#2 Was the vegetated shelf included in the calculation of average depth?
No
#6 Slope of vegetated shelf (H V)
6.1
#2 Elevation of the bottom of the permanent pool (fmsl)
613 ft
#7 Diameter of drawdown orifice (inches)
2 0 in
#2 Elevation of the top of the permanent pool (fmsl)
620 ft
#7 Drawdown time for the temporary pool (hours)
71 hrs
#2 Elevation of the top of the temporary pool (fmsl)
621 5 ft
#7 Does the orifice drawdown from below the top surface of the permanent pool?
Yes
#3 Depth provided for sediment storage (inches)
6 in
#8 Does the pond minimize impacts to the receiving channel from the 1 -yr, 24 -hr storm?
Yes
#4 Are the inlet(s) and outlet located in a manner that avoids short-circuiting?
Yes
#9 Are fountains proposed?
No
#4 Describe any measures, such as berms or baffles, that will be taken to improve the flow path
#9 If yes, is documentation provided per Wet Pond MDC (9)?
#10 Is a trash rack or other device provided to protect the outlet system?
Yes
#5 Volume of the forebay (cubic feet)
5545
#11 Are the dam and embankment planted in non -clumping turf grass?
Yes
#5 Is this 15-20% of the volume in the main pool?
Yes
#11 Species of turf that will be used on the dam and embankment
Centipede
#5 Depth of forebay at entrance (inches)
841n i
#11 Describe the planting plan for the vegetated shelf
#5 Depth of forebay at exit (inches) 84 in
#5 Does water flow out of the forebay in a non-erosive manner? Yes
#5 Clean-out depth for forebay (inches) 6 in
#5 Will the forebay be cleaned out when the depth is reduced to less than the above? Yes
ADDITIONAL INFORMATION
Please use this space to provide any additional information about this wet pond that you think is relevant to the review
3 SPECIES OFSHALLOW LAND HERBACEOUS PLANS ON UPPER SHELF, AND 3 SPECIES OF SHALLOW
WATER EMERGENT PLANTS ON THE LOWER,SHELF
Other BUA is for Future Amenity Site
Wet Pond 1 4.50 PM 6/2/2017

WETPOND
Moore Farm
THE DRAINAGE AREA
3
Drainage area number
3
Break down of BUA in the drainage area (both new and existing):
Total coastal wetlands area (sq ft)
Parking / driveway (sq ft)
Total surface water area (sq ft)
Sidewalk (sq ft)
16550 sf
Total drainage area (sq ft)
472288 sf
Roof (sq ft)
120000 sf
BUA associated with existing development (sq ft)
Roadway (sq ft)
46340 sf
Proposed new BUA (sq ft)
217118 sf
Other, please specify in the comment box below (sq ft)
34228 sf
Percent BUA of drainage area
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
46 %
Total BUA (sq ft)
217118 sf
Stormwater program(s) that apply (please specify)
IDesign rainfall depth (in)
1 0 in
Water Quaility per NCDEQ Stormwater Design Manual & Detention per Union County Requirements
GENERAL MDC FROM 02H.1050
IMinimurn volume required (cu ft)
Design volume of SCM (cu ft)
18252 cf
21710 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)?
31
#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? Drawdown Orifice
WET POND MDC FROM 02H.1053
#13 Was the SCM designed by an NC licensed professional?
Yes
#1 Method used
SA/DA
#6 Width of the vegetated shelf (feet)
6 ft
#1 Surface area of the main permanent pool (square feet)
8647 sf
#6 Location of vegetated shelf
@ Normal Pool
#1 Volume of the main permanent pool (cubic feet)
26568 cf
#6 Elevation of top of shelf (fmsl)
614 ft
#2 Average depth of the main pool (feet)
3 5 ft
#6 Elevation of bottom of shelf (fmsl)
613 ft
#2 Was the vegetated shelf included in the calculation of average depth?
No
#6 Slope of vegetated shelf (H V)
61
#2 Elevation of the bottom of the permanent pool (fmsl)
608 5 ft
#7 Diameter of drawdown orifice (inches)
2 0 in
#2 Elevation of the top of the permanent pool (fmsl)
613 5 ft
#7 Drawdown time for the temporary pool (hours)
92 hrs
#2 Elevation of the top of the temporary pool (fmsl)
614 75 ft
#7 Does the orifice drawdown from below the top surface of the permanent pool?
Yes
#3 Depth provided for sediment storage (inches)
6 in
#8 Does the pond minimize impacts to the receiving channel from the 1 -yr, 24 -hr storm?
Yes
#4 Are the inlet(s) and outlet located in a manner that avoids short-circuiting?
Yes
#9 Are fountains proposed?
No
#4 Describe any measures, such as berms or baffles, that will be taken to improve the flow path
#9 If yes, is documentation provided per Wet Pond MDC (9)9
#10 Is a trash rack or other device provided to protect the outlet system?
Yes
#5 Volume of the forebay (cubic feet)
17267
#11 Are the dam and embankment planted in non -clumping turf grass?
Yes
#5 Is this 15-20% of the volume in the main pool?
Yes
#11 Species of turf that will be used on the dam and embankment
Centipede
#5 Depth of forebay at entrance (inches)
54 in
#11 Describe the planting plan for the vegetated shelf
#5 Depth of forebay at exit (inches)
#5 Does water flow out of the forebay in a non-erosive manner?
#5 Clean-out depth for forebay (inches)
#5 Will the forebay be cleaned out when the depth is reduced to less than the above?
ADDITIONAL INFORMATION
54 in
Yes
6 in
Yes
3 SPECIES OFSHALLOW LAND HERBACEOUS PLANS ON UPPER SHELF, AND 3 SPECIES OF SHALLOW
WATER EMERGENT PLANTS ON THE LOWER SHELF
Please use this space to provide any additional information about this wet pond that you think is relevant to the review
Other BUA is for Future Amenity Site
Wet Pond 1 4 50 PM 6/2/2017

VVET POND
Moore Farm
THE DRAINAGE AREA
4
Drainage area number
4
Break down of BUA in the drainage area (both new and existing).
Total coastal wetlands area (sq ft)
Parking / driveway (sq ft)
Total surface water area (sq ft)
Sidewalk (sq ft)
39590 sf
Total drainage area (sq ft)
1145042 sf
Roof (sq ft)
373100 sf
BUA associated with existing development (sq ft)
Roadway (sq ft)
110852 sf
Proposed new BUA (sq ft)
523542 sf
Other, please specify in the comment box below (sq ft)
Percent BUA of drainage area
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
ITotal BUA (sq ft)
523542 sf
Stormwater program(s) that apply (please specify)
IDesign rainfall depth (in)
1 0 in
Water Quaility per NCDEQ Stormwater Design Manual
GENERAL MDC FROM 02H.1050
IMinimum volume required (cu ft)
Design volume of SCM (cu ft)
44037 cf
45463 of
#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
94 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?
WET POND MDC FROM 02H.1053
Drawdown Orifice
#13 Was the SCM designed by an NC licensed professional?
Yes
#1 Method used
SADA
#6 Width of the vegetated shelf (feet)
6 ft
#1 Surface area of the main permanent pool (square feet)
29602 sf
#6 Location of vegetated shelf
Above Normal Pool
91 Volume of the main permanent pool (cubic feet)
135450 cf
#6 Elevation of top of shelf (fmsl)
615 ft
#2 Average depth of the main pool (feet)
4 5 ft
#6 Elevation of bottom of shelf (fmsl)
614 ft
#2 Was the vegetated shelf included in the calculation of average depth?
Yes
#6 Slope of vegetated shelf (H V)
61
#2 Elevation of the bottom of the permanent pool (fmsl)
608 ft
#7 Diameter of drawdown orifice (inches)
3 0 in
#2 Elevation of the top of the permanent pool (fmsl)
614 ft
#7 Drawdown time for the temporary pool (hours)
99 hrs
#2 Elevation of the top of the temporary pool (fmsl)
615 02 ft
#7 Does the orifice drawdown from below the top surface of the permanent pool?
Yes
#3 Depth provided for sediment storage (inches)
6 in
#8 Does the pond minimize impacts to the receiving channel from the 1 -yr, 24 -hr storm?
Yes
#4 Are the inlet(s) and outlet located in a manner that avoids short-circuiting?
Yes
#9 Are fountains proposed?
No
#4 Describe any measures, such as berms or baffles, that will be taken to improve the flow path
#9 If yes, is documentation provided per Wet Pond MDC (9)?
#10 Is a trash rack or other device provided to protect the outlet system?
Yes
#5 Volume of the forebay (cubic feet)
41073
#11 Are the dam and embankment planted in non -clumping turf grass?
Yes
#5 Is this 15-20% of the volume in the main pool?
Yes
#11 Species of turf that will be used on the dam and embankment
Centipede
#5 Depth of forebay at entrance (inches)
721n
#11 Describe the planting plan for the vegetated shelf.
#5 Depth of forebay at exit (inches)
#5 Does water flow out of the forebay in a non-erosive manner?
#5 Clean-out depth for forebay (inches)
#5 Will the forebay be cleaned out when the depth is reduced to less than the above?
ADDITIONAL INFORMATION
721n
Yes
6 in
Yes
3 SPECIES OFSHALLOW LAND HERBACEOUS PLANS ON ENTIRE SHELF
Please use this space to provide any additional information about this wet pond that you think is relevant to the review
Wet Pond 1 4:50 PM 6/2/2017