SWA000022__08 MDC Forms - West Pond - Signed_20201111

Project Name ,,am % A &A Permit # SW8 A0000 zz
AS -BUILT DESIGN R'S CERTIFICATION FOR
GENERAL MDC (.WEST Z)
I hereby state that I am a licensed professional and I certify by my signature and seal below, that I have observed
the construction of the project named above to the best of my abilities with all due care and diligence, and that the
project meets all of the below listed General MDC found in 15A NCAC 02H.1050, in accordance with the permit
documents, plans and specifications on file with or provided to the Division, except as noted on the "AS -BUILT"
drawings, such that the intent of the stormwater rules and the general statutes has been preserved.
❑ Check here if this is a partial certification. Section/phase/SCM # S►-f& T CS.2 _
® Check here if this is part of a Fast -Track As -Built Package Submittal per 15A NCAC 02H .1044(3).
Check here if the Designer did not observe the construction but is certifying the project.
Check here if pictures of the SCMs are provided.
Printed Nance �, A . Ross" Signature
NC Registration Number ui55Z(o Date 1111 Zo2�
SEAL: CA
SEAL
045526
'NGle�rSG,� t J
R, i, ►�►�'''
Consultant's Mailing Address:
Sot DRY ve , Sv T it 109
City: WM State: W{- Zip; ZgZti"f'
Phone:(*q ) 353 Alq&
Consultant's Email address:
ssiP— n1
iD Circle N if the as -built value differs from the Plan/permit. If N is circled, provide an explanation on page 3.
O N/E = Not Evaluated (provide explanation on page 2). ON/A = Not Applicable to this project or SCM.
Consultant's Certification 15A NCAC 02H .1003(3) & General MDC 15A NCAC 02H .1050
TREATMENT REQUIREMENTSOAs-built ON/E OO N/A
1. The SCM achieves runoff treatment.
Yor N
2. The SCM achieves runoff volume match. Y or N
3. Runoff from offsite areas and/or existing BUA is bypassed. Y or N
4- Runoff from oll'siie areas and/or existing to BUA is directed inD or N
the permitted SCM and is accounted for at the full build -out
_ p�,lential. _
5. The project controls runoff through an offsite permitted SCM Y or N
that meets the requirements of the MDC.
6. The net area of new BUA increase for an existing project has Y or N
been accounted for at the appropriate design storm level.
NIA
NON
NCDEQ 2/9/2018

Project Name _ .,RMRRD5 [ptcc_ Permit # SW8 AoccoZ'Z
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7. The SCM(s) meets all the specific minimum design criteria.
Yor N
VEGETATED SETBACKS / BUAOAs-built
ON/E
ON/A
1. The width of the vegetated setback has been measured from
or N
the normal pool of impounded waters, the MHW line of tidal
waters or the top of bank of each side of rivers or streams.
2. The vegetated setback is maintained in grass or other
Y or N
vegetation.
Y or N
3. BUA that meets the requirements of NCGS 143-214.7 (b2)(2)
is located in the setback.
N I A
4. BUA that does not meet the requirements of NCGS 143-214.7
Y or N
(b2)(2) is located within the setback and is limited to:
• Publicly funded linear projects (road, greenway sidewalk)
• Water -dependent structures
NIA
• Minimal footprint uses (utility poles, signs, security
lighting and a urtenances
5. Stormwater that is not treated in an SCM is released at the
Y or N
edge of the setback and allowed to flow through the setback as
dispersed flow.
STORMWATER OUTLETSOAs-built
ON/E
OO N/A
1. the outlet handles the peak flow from the 10-year storm with
or N
no downslope erosion.
VARIATIONSOAs-built
ON/E
OO N/A
1. A variation (alternative) from the stormwater rule provisions
Y N
has been implemented.
or
NIA
2. The variation provides equal or better stormwater control and
Y N
equal or better protection of surface waters,
or
ON/E
JA
ON/A
COMPLIANCE WITH OTHER REGULATORY PROGRAMSOAs-built
1. The project is compliant with other applicable regulatory
or N
programs.
ON/E
ON/A
SIZINGOAs-built
1. The volume of the SCM takes the runoff from all surfaces into
or N
3
account and is sufficient to handle the required storm depth.
CONTAMINATED SOILSOAs-built
ON/E
ON/A
1. Infiltrating SCM's are not located in or on areas with
Y N
contaminated soils.
or
ON/E
N
ON/A
SIDE SLOPESOAs-built
1. Vegetated side slopes are no steeper than 3H:1 V.
w. Y �r N
NCDEQ 2/9/2018

Project Name CALL,_ Permit # SW8 A0000ZZ
2. Side slopes include retaining walls, gabion walls, or other Y or N
surfaces that are steeper than 3H:IV.
3. Vegetated side slopes are steeper than 3H:1 V (provide 1 Y or N
supporting documents for soils and vegetation).
EROSION PROTECTION
1. The inlets do not cause erosion in the SCM.
NIA
MIA
OAs-built ®N/E ©N/A
Y or N
2. The outlet does not cause erosion downslope of the discharge U or N
point during the peak flow from the 14-year storm.
EXCESS FLOWSOAs-built I ®N/E OO N/A
1. An overflow / bypass has been provided.
DEWATERING
1. A method to drawdown standing water has been provided to
facilitate maintenance and inspection.
CLEANOUT AFTER CONSTRUCTION
1. The SCM has been cleaned out and converted to its approved
design state.
MAINTENANCE ACCESS
1, The SCM is accessible for maintenance and repair.
2. The access does not include lateral or incline slopes >3:1.
DESIGNER QUALIFICATIONS (FAST -TRACK PERMIT)
1. The designer is licensed under Chapters 89A, 89C, 89E, or
89F of the General Statutes.
Iy
or N
OAs-built ©N/E OO N/A
U or N
OO As -built I ON/E 130N/A
or N
OAs-built
320
Y or N
or N
DY
OAs-
or N
©N/E I OO N/A
®N/E I OO N/A
Provide an explanation below for every MDC that was not met, and for every item marked "N/A" or "N/E."
Attach additional pages as needed.
Runoff volumes are higher than approved, but less than pre -developed volumes.
NCDEQ 2/9/2018

Project Name ►�+T iD Permit # SW8 AO000ZZ
AS -BUILT DESIGNER'S CERTIFICATION FOR
WET DETENTION POND PROJECT CwesT z)
I hereby state that I am a licensed professional and I certify by my signature and seal below, that I have observed
the construction of the project named above to the best of my abilities with all due care and diligence, and that the
project meets all of the MDC found in 15A NCAC 02H.1053, in accordance with the permit documents, plans and
specifications on file with or provided to the Division, except as noted on the "AS -BUILT" drawings, such that the
intent of the stormwater rules and the general statutes has been preserved.
❑ Check here if this is a partial certification_ Section/phase/SCM # S1k-:ET CS
® Check here if this is part of a Fast -Track As -Built Package Submittal per 15A NCAC 02H .1044(3).
© Check here if the Designer did not observe the construction but is certifying the project.
Check here if pictures of the SCM are provided.
Printed dame It! -n.r25 Signature
NC Registration Number N55`UA
SEAL: CA�r�►���'�
t.S5loy
9 0
r�q
SEAL -
045526
Fi i `4R0"�X. `
Date IIJ11[2,20
Consultant's Mailing Address:
Sot `t m2 yC , SjrrE 107
City. (Y4WI State: AJC Zip: UTZ-+
Phone:L) 3S3-RR43
Consultant'i Email address.
10rass►COemn )A,Cent
iD Circle N if the as -built value differs from the Plan/permit. If N is circled, provide an explanation on page 2.
O N/E = Not Evaluated (provide explanation on page 2). OO N/A = Not Applicable to this project or SCM.
This Certification must be completed in conjunction with the General MDC certification under 15A NCAC 021-1,1050.
Consultant's Certification (MDC 15A NCAC 02H .1053)
Forebay / Depths ! Fountain (MAs-built ON/E ON/A
1. The available Sediment storage is consistent with the approved or N
plan and is a minimum of 6 in.
2. Water flow over the forebay berm into the main pond occurs at a or N
non -erosive velocity. UY
3. The provided Forebay Volume is 15%-20% of the main pool or N
volume. 10
4. The Forebay entrance elevation is deeper than the exit elevation + Oor N
into the pond. I
5. The Average Design Depth of the main pond below the or N
permanent pool elevation is consistent with the permitted value.
6. Fountain documentation is provided. CY)or N
NCDEQ 2/9/2018

Project Name (�,s,� - _& CMCUt.a_ (W Permit # SM AocooZ2
f
Side slopes / Banks / Vegetated Shelf
OAs-built I ON/E I ON/A
1. The width of the Vegetated Shelf is consistent with the approved or N
plans and is a minimum of 6 feet.
2. The slope of the Vegetated Shelf is consistent with the approved j Y�or N
plans and is no steeper than 6:1.
As -built Main Pool / Areas / Volumes / Elevations OO As -built
1. The permanent pool surface area provided is consistent with the
permitted value.
2. The Temporary Pool Volume provided is consistent with the
permitted value.
3. The permanent pool elevation is consistent with the permitted
value.
4. The temporary pool elevation is consistent with the permitted
value.
Inlets / Outlet / Drawdown
1. The design volume draws down in 2-5 days
2. The size of the Orifice is consistent with the permitted value
3. A trash rack is provided on the outlet structure.
4. Hydrologic impacts to the receiving channel are minimized from
the 1 yr 24-hr storm discharge?
5. The inlets and the outlet location are situated per the approved
plan and avoid short-circuiting.
Vegetation
1. The vegetated shelf has been planted with a minimum of 3
diverse species.
2. The vegetated shelf plant density is consistent with the
approved plans and is no less than 50 plants per 200 sf or no
less than 24 inches on center.
Y orj'N j
Y or
Y or[NJ
Y 00.
OO As -built
3 or N
Y or N
Y or N
U or N
or N
OO As -built
j �YJ or N
or N
ON/E I ON/A
ON/E I ON/A
ON/E I OO N/A
t�
Provide an explanation below for every MDC that was not met, and for every item marked "N/A" or "N/E."
Attach additional pages as needed.
As -built main pool/temp. pool volume/permanent pool/temp. pool
elevations are within the design intent (as approved). Surface area is
larger than design thus increasing water quality volume at lower
elevation.
,standard grate provided instead of trash rack.
Water quality orifice was resized to meet the 2-5 day drawdown time
(previous orifice was releasing water too slowly)
NCDEQ 2/9/2018

Courtyards at Emerald lake Wet Pond#2 - Photos
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