SW3180302_Supplement-EZ Form_20180420

SUPPLEMENT -EZ FORM COVER PAGE
Please indicate the types, quantities and locations of SCMs that will be used on this project:
Designer information for this project:
e and Title:
nization:
rt address:
State, Zip:
is number(s):
1.
Designer
Michael Theberge, P.E., Project Manager
Bohler Engineering NC, PLLC
1927 South Tryon Street, Suite 310
Charlotte. NC. 28203
mtheberge@bo
Applicant:
Nz
Pro'ect Name:
Main Street Station
Address
8200 Waxhaw Highway
City / Town
Waxhaw, NC
pany: RHH Land Investors, LLC
act: Kerry Avant
ig Address: 2919 Breezewood Avenue, Suite 400 _
State, Zip: Fayetteville, NC, 28303
e number(s): 910-486.4864
Certification Statement%:
`�,�� • ,....,,,,,y4 ��'+,+ I certify, under penalty of law: that this Supplement -EZ form and all supporting
Ftr$$I Q�y y . information were prepared under my direction or supervision;
O ,gyp q��, 1 ,s' -that the information provided in the form is, to the best of my knowledge
��--� and belief, true, accurate, and complete; and
Z €a SEAL
CA io Q Signature of Designer that the engineering plans, specifications, operation and maintenance
agreements and other supporting information are consistent with
>� `•; ��Q+:��a the information provided here.
GRA
+,0'9 - .�� �� I am aware that there are significant penalties for submitting false
++�r � "BLMI"'�� Date / Z� / f vioinflations as welrmation l as aing ce possibility of fines re ort being made to m d imprisonment
of essional board.rowing
P 9 YP
Cover Page 1 11:52 AM 4/18/2018
Quantity Location(s)
Infiltration System
0
Bioretention Cell
0
Wet Pond
1 Westem Corner of
Stormwaler Wetland
_ _ _Sit_e__
0
Permeable Pavement
0
Sand Filler
0
_
Rainwater Harvesting
0
Green Roof
0
Level Spreader -Filter Strip
0
Disconnected Impervious Surface
0
Swale
0
_Treatment
Dry Pond -
0
Designer information for this project:
e and Title:
nization:
rt address:
State, Zip:
is number(s):
1.
Designer
Michael Theberge, P.E., Project Manager
Bohler Engineering NC, PLLC
1927 South Tryon Street, Suite 310
Charlotte. NC. 28203
mtheberge@bo
Applicant:
Nz
Pro'ect Name:
Main Street Station
Address
8200 Waxhaw Highway
City / Town
Waxhaw, NC
pany: RHH Land Investors, LLC
act: Kerry Avant
ig Address: 2919 Breezewood Avenue, Suite 400 _
State, Zip: Fayetteville, NC, 28303
e number(s): 910-486.4864
Certification Statement%:
`�,�� • ,....,,,,,y4 ��'+,+ I certify, under penalty of law: that this Supplement -EZ form and all supporting
Ftr$$I Q�y y . information were prepared under my direction or supervision;
O ,gyp q��, 1 ,s' -that the information provided in the form is, to the best of my knowledge
��--� and belief, true, accurate, and complete; and
Z €a SEAL
CA io Q Signature of Designer that the engineering plans, specifications, operation and maintenance
agreements and other supporting information are consistent with
>� `•; ��Q+:��a the information provided here.
GRA
+,0'9 - .�� �� I am aware that there are significant penalties for submitting false
++�r � "BLMI"'�� Date / Z� / f vioinflations as welrmation l as aing ce possibility of fines re ort being made to m d imprisonment
of essional board.rowing
P 9 YP
Cover Page 1 11:52 AM 4/18/2018

WET POND
Main Street Station
THE DRAINAGE AREA
1
Drainage area number
1
Break down of BUA in the drainage area (both new and existing):
Total coastal wetlands area (sq ft)
- Parking I driveway (sq ft)
18260 sf
Total surface water area (sq ft)
44902 sf
- Sidewalk (sq ft)
21100 sf
Total drainage area (sq ft)
493056 sf
- Roof (sq ft)
172200 sf
BUA associated with existing development (sq ft)
- Roadway (sq ft)
110000 sf
Proposed new BUA (sq ft)
321560 sf
- Other, please specify in the comment box below (sq ft)
Percent BUA of drainage area
65%6
Total BUA (sq ft)
321560 sf
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
Stormwater program(s) that apply (please specify):
Design rainfall depth (in)
1.0 In
Minimum volume required (cu ft)
26171 d
Design volume of SCM (cu ft)
33619 d
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 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)?
#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)?
1#13
Yes
#6 What is the method for dewatering the SCM for maintenance?
Drawdown Orifice
Was the SCM designed by an NC licensed professional?
Yes
WET POND MDC FROM 02H.1053
#1 Method used
SAIDA
#6 Width of the vegetated shelf (feet)
6 ft
1 Surface area of the main permanent pool (square feet)
32265 sf
#6 Location of vegetated shelf
((j'? Normal Pool
#1 Volume of the main permanent pool (cubic feet)
134062 d
#6 Elevation of top of shelf (fmsl)
632 ft
#2 Average depth of the main pool (feet)
3.40
#6 Elevation of bottom of shelf (fmsl)
631 ft
#2 Was the vegetated shelf included in the calculation of average depth?
Yes
#6 Slope of vegetated shelf (H:V)
6:1
#2 Elevation of the bottom of the permanent pool (fmsl)
626.00
#7 Diameter of drawdown office (inches)
3.0 in
#2 Elevation of the top of the permanent pool (fmsl)
631.50
#7 Drawdown time for the temporary pool (hours)
57 hrs
#2 Elevation of the top of the temporary pool (fmsi)
636.00
#7 Does the orifice drawdown from below the top surface of the permanent pool?
No
#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
04 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)?
Forebay berm is armored in order to provide adequate water velocity protection to the main pool
#10 Is a trash rack or other device provided to protect the outlet system?
Yes
#5 Volume of the forebay (cubic feet)
14957
#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
white turtlehead
#5 Depth of forebay at entrance (inches)
42 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?
36 in
Yes
61n
Yes
elevation 631.00' to 631.50 shall consist of shallow water vegetation (blue iris, sweetflag, lizard's tail)
elevation 631.50' to 632.00 shall consiste of shallow land vegetation (white turtlehead, dwarf joe pye weed, cardinal
flower)
ADDITIONAL INFORMATION
Please use this space to provide any additional information about this wet pond that you think is relevant to the review:
Wet Pond 1 11:52 AM 4/18/2018

` SUPPLEMENT -EZ FORM COVER PAGE
Please indicate the types, quantities and locations of SCMs that will be used on this project:
Infiltration System
',. RHH Land Investors, LLC
Bioretention Cell
L
Wet Pond
Stonmwater Wetland
2919 Breezewood Avenue, Suite_4.00
Permeable Pavement
'Fayetteville NC, 28303
Sand Filler_
1910-486-4864
Rainwater Harvesting
Green Roof
Level Spreader -Fitter Strip
Disconnected Impervious Surface
Treatment Swale
Designer information for this project:
and Title:
State, Zip:
e number(s):
Designer
,,�gpnnrnn„
0 _
0
0
0 --
0
Michael Theberge, P.E., Project Manager
Bohler Engineering NC, PLLC
1927 South Tryon Street, Suite 310
Charlotte, NC, 28203
980-272-3400
Signature of Designer
Applicant:
Project Name:
Main Street Station
Address
8200 Waxhaw Highway
City / Town
Waxhaw, NC
parry:
',. RHH Land Investors, LLC
act:
Kerry Avant
ng Address:
2919 Breezewood Avenue, Suite_4.00
State, Zip:
'Fayetteville NC, 28303
ie number(s):
1910-486-4864
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
Date violations as well as a report being made to my professional board.
RECEIVE
APR 23 2018
DENR-LAND QUALITY
STORMWATER PERMITTING
Cover Page 1 11:05 AM 4/20/2018

WET POND
Main Street Station
THE DRAINAGE AREA
1
Drainage area number
2
Break down of BUA in the drainage area (both new and existing):
Total coastal wetlands area (sq ft)
- Parking I driveway (sq ft)
5614 sf
Total surface water area (sq ft)
14741 sf
- Sidewalk (sq ft)
6209 sf
Total drainage area (sq ft)
148409 sf
- Roof (sq ft)
30821 sf
BUA associated with existing development (sq ft)
- Roadway (sq ft)
55109 sf
Proposed new BUA (sq ft)
81344 sf
- Other, please specify in the comment box below (sq ft)
16423 sf
Percent BUA of drainage area
6696
Total BUA (sq ft)
97767 sf
COMPLIANCE WITH THE APPLICABLE STORMWATER PROGRAM
Stormwater program(s) that apply (please specify):
Design rainfall depth (in)
1.0 in
Minimum volume required (cu ft)
7951 d
Design volume of SCM (cu ft)
8755 d
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 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?
Yes
#10 If the SCM is on a single family lot, does the plat comply with General MDC (10)?
#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)?
1#13
Yes
#6 What is the method for dewatering the SCM for maintenance?
Drawdown Orifice
Was the SCM designed by an NC licensed professional?
Yes
WET POND MDC FROM 021-11.1053
#1 Method used
SAIDA
#6 Width of the vegetated shelf (feet)
6 ft
#1 Surface area of the main permanent pool (square feet)
7948 sf
#6 Location of vegetated shelf
@ Normal Pool
#1 Volume of the main permanent pool (cubic feet)
24178 d
#6 Elevation of top of shelf (fmsl)
622.5 ft
#2 Average depth of the main pool (feet)
4.00
#6 Elevation of bottom of shelf (fmsl)
621.5 ft
#2 Was the vegetated shelf included in the calculation of average depth?
Yes
#6 Slope of vegetated shelf (H:V)
6:1
#2 Elevation of the bottom of the permanent pool (fmsl)
616.50
#7 Diameter of drawdown orifice (inches)
3.0 In
#2 Elevation of the top of the permanent pool (fmsl)
622.00
#7 Drawdown time for the temporary pool (hours)
49 hrs
#2 Elevation of the top of the temporary pool (fmsl)
626.00
#7 Does the orifice drawdown from below the top surface of the permanent pool?
No
#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)?
Forebay berm is armored In order to provide adequate water velocity protection to the main pool
#10 Is a trash rack or other device provided to protect the outlet system?
Yes
#5 Volume of the forebay (cubic feet)
3964
#11 Are the dam and embankment planted in non -clumping turf grass?
No
#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 -F7718"
dia. Rip rap
#5 Depth of forebay at entrance (inches)
42 in
#11 Describe the planting plan for the vegetated shelf:
#5 Depth of forebay at exit (inches)
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?
36 in
Yes
6 in
Yes
elevation 621.50 to 622.00 shall consist of shallow water vegetation (blue iris, sweetflag, lizard's tail)
elevation 622.00 to 622.50 shall consiste of shallow land vegetation (white turtlehead, dwarf Joe pye weed, cardinal flower)
ADDITIONAL INFORMATION
Please use this space to provide any additional information about this wet pond that you think is relevant to the review:
Proposed new offsite BUA of 16,423sf added to total BUA for pond 2 (above).
Wet Pond 1 11:52 AM 4/18/2018