SW1231201_Supplement-EZ Form_20240325

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
PROJECT INFORMATION
1 Project Name Bobby N Setzer State Fish Hatchery Renovation
2 Project Area(ac) 41.17
3 Coastal Wetland Area(ac) p
4 Surface Water Area(ac) 3.91
5 Is this project High or Low Density? High
6 Does this project use an off-site SCM? No
COMPLIANCE WITH 02H.1003(4)
7 Width of vegetated setbacks provided(feet) 30
8 Will the vegetated setback remain vegetated? Yes
9 If BUA is proposed in the setback,does it meet NCAC 02H.1003(4)(c-d)? N/A
10 Is streambank stabilization proposed on this project? No
NUMBER AND TYPE OF SCMs:
11 Infiltration System
12 Bioretention Cell
13 Wet Pond
14 Stormwater Wetland 1
15 Permeable Pavement
16 Sand Filter
17 Rainwater Harvesting(RWH)
18 Green Roof
19 Level Spreader-Filter Strip(LS-FS)
20 IDisconnected Impervious Surface(DIS)
21 Treatment Swale
22 Dry Pond
23 StormFilter
24 SiNa Cell
25 Bayfilter
26 Filterra
FORMS LOADED
DESIGNER CERTIFICATION
27 Name and Tit€e: Ben Cathay
28 Organization: McGill Associates
29 Street address: 55 Broad St.
30 City,State,Zip: Asheville,NC 28801
31 Phone number(s): 828-252-0575
32 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.
Desrgner
CA
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SEA Signature of Designer
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/!!!lYj111111111111` Date

DRAINAGE AREAS
1 Is this a high density project? Yes
2 if so,number of drainage areas/SCMs. 1
3 Does this project have low density areas? No
4 If so,number of low density drainage areas 0
Is aUpart of this project subject to previous rule
5 versions? No
FORMS LOADED
DRAINAGE AREA INFORMATION Entire Site 1
4 Type of SCM 5W Wetland
5 Total drainage area sq ft 1,793,365 207,867
6 Onsite drainage area sq ft 1,793,365 207,867
7 Offsite drainage area sq ft 0 0
8 Total BUA in project sq ft) 1 379602 sf 133351 sf
New BUA on subdivided lots(subject to
9 permitting)(sq ft) NIA NIA
New BUA not on subdivided lots(subject to
10 permitting) sf 242627 sf 80128 sf
11 Offsite BUA(sg ft NIA NIA
12 Breakdown of new BUA not on subdivided lots:
Parking sq ft 37801 sf 3981 sf
Sidewalk sq ft) 4485 sf 2889 sf
Roof(sq ft) 175855 sf 73258 sf
Roadway(sq ft 24486 sf NIA
Future(sq ft) NIA NIA
Other,please specify in the comment box
below sq ft) NIA NIA
New infiltrating permeable pavement on
13 Isubdivided lots(sq ft) NIA NIA
Now infiltrating permeable pavement not on
14 subdivided lots(sq ft) NIA NIA
Existing BUA that will remain(not subject to
15 permitting)(sq ft) 136975 sf 53223 sf
16 Existing BUA that is alreadK permitted sq ft NIA NIA
17 Existing BUA that will be removed(sq ft) 160848 sf 38187 sf
18 Percent BUA 21% 64%
19 IDesign storm inches 1.0 in
20 IDesign volume of SCM(cu ft) 9308 cf
21 lCalculation method for design volume Discrete NRCS
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the
22 drainage area(s):
Other Impervious=hatchery operations/raceways
#10-Note:Includes existing BUA that is being replaced
#17 Note:Includes BUA that is being removed and replaced by'new'BUA

STORMWATER WETLAND
11 Drai nage
area number SCM 1
2 Minimum required treatment volume cu ft 8868 cf'
3 Is the SCM shed 10 t eat the SW from all surfaces"at build-out? Yes:,
4 Is the SCM located away from contaminated soils? Yes
5 What are the side slopes of the SCM(RV)? 3A
Does the SCM have retaining walls,gabfcn walls or other
6 e Ineered side slo s? No
Are the Inlets,outlets,and receiving stream protected from erosion
7 10 ear storm)?
Yes
Is there an overflow or bypass for Inflow volume In excess of the
8 design volume? Yes
9 What Is the method for dewaterIng the SCM for maintenance? Pump(preferred)
10 If applicaNe,will the SCM be Leaned out after construction? Yes
11 Does the maintenance access oompty with General MDC 8? Yes
12 Does the 4airage easement comply with General MDC 9? NIA
13 If the SCM Is on a single family lot,does(will?)the plat comply with NIA
General MDC 10 7
14 Is there an O&M Agreement that complies with General MDC(11)? Yes
15 Is there an O&M Ran that complies with General MDC 12? Yes
16 Does the SCM follow the device specific MDC? Yes
17 Was the SCM desi ned b an INC licensed fessional7 Yes ;r
NW FIROM
_ b
18 Des 9 308 `.c
19 Are the Inlet(s)and outlet located in a manner that avoids short- Yes
clrcuitl P
20 Are berms or baffies provided to im rove the flowpath? No
21 Does the orifice drawdown from below the top surface of the 1,es
perma I?
Does the wetland minimize Impacts to the recelving channel from the
22 Yes
1-vr.24-hr storm?
23 Is a trash rack or other device provided to protect the outlet system? " Yes
IIeYvfions.
Elevation,peak attenuation above temporary pool(if applicable)
24 2336 W
fmsl
Elevation,temporary pool(top of the temporary Inundatlor zone)
25 fmsl �'2334.25
26 Elevation permanent poolto of the shallow water zone fmsl 2333.00
27 Elevatioh,bottom of shallow water Zone fmsl '233225
Elevation,bottom of forebay deep pool at deepest paint(at forebay
28 entrance)(ims] 232917
29 Elevation,bottom of forebay deep pool at shallowest point(at 2329 87
foreba exit fmsl
30 Elevation,bottom of non-forebay deep pool at deepest pelnl(fmsl) 2330 00
PfciTdny Zcires ...1
31 Area,total surface area of the SW wetland at temporary pool elev 10 203 00
(sq(t
32 Area,temporary inundation zone at temporary I elev. sq ft 3823 00
33 Area,shallow water zone at temporary, I all(ag ft 4 3t38.00 ?";
34 Area rebayattemporary pool elev. s ft ::11,183.01)
35 Area,non-forebay deep I at teme2rary pooi ell ft ;'M.00
Percent area provided,temporary inundation zone(should be 30-
3fi 46%
37 Percent area provided,shallow water zone should be 35-45
36 Percent area provided,deep (forebay) should be 10-15°!
39 Percent area provided,deep pool(non-forebay)(should be 5-16%)
Gaples Ow O Mlet .
40 Peak attenuation depth above terne2raa inundation zone inches 21 to
41 Temporary inundation zone depth(temporary pool to permanent 15 in
I inches
42 Shallow water zone depth{permanent pool to bottom of wetland] In
9
Inches
43 Depth,forebay at entrance(permanent pool to bottom of forebay '
entrance)(Inches
Depth,forebay at exit(permanent pool to bottom of forebay exit)
on
Inches
45 Depth,non-forebay deep pools(permanent pool to deep pool
bottom Inches
46 If there is an orifice,diameter Inches See Note;
47 If the is a weir,weir height Inches
MI M there Is a weir,weir le Inches
49 DrawdOwn lime for the temporary (days) 2.75
Wetland 3 8:59 AM 311912024

STORMWATER WETLAND
Sol and Pfunts
50 Sol[amendment depth inches 12 in
61 Hasa Boll amendmenl specfflcation been rovlded7 Yes
52 Has a landsoaping plan that meets SW Welland MDO(12)been Y
es
provided?
53 Number of plants per 200 square feel(#)In the shal[cw water zone:
54 hoes the temporary Inundation zone planting comply with SW Yes'
Wetland MSC 14 7
55 Are the dam structure and temporary rill slopes planted In non- Y�
clum f turf rass?
56 JWN cattails be pianted in the wetland? No
Please use this space to provide any additional Information about the
57 stormwaterwetiand(s):
Ur*# pr 12:No easemeals ovided'bacause R is not privetety owned land..
Line i.46"Ori"is 1.5'in diemetet.'
Line#53:�83.8 plants p4r M d have been prayided in ttie shallow weber
w{1;830'ptants Or:4,3B8 so'
Wetland 4 8:58 AM 3/1.9/2024