SW1170501_Designers Certification_20240417

Post-Construction Stormwater Management
Permit No. SW1170501
AS-BUILT DESIGNER'S CERTIFICATION GENERAL MDC
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 the below listed General MDC found in 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 statutes has been preserved.
_ Check here if this is a partial certification. Section/phase/SCM #? Acony Bell -Phase 3
Check here if this is a part of a Fast-Track As-Built Package Submittal per .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.
ktitt
Printed Name Eric Hutchison, PE g
Si nature 4NC Registration Number 051824 Date /I`I 2,3
����liiiiiii��i Consultant's Mailing Address:
\\\SEAL: /I,,�
C . R 0 ��i�i Brooks Engineering Associates - 15 Arlington St
_� •�'� ,� •'• City/State/ZIP Asheville NC 28801
• SEAS
' \ p5�8�� E Phone Number 828 232-4700
\\1 S
t
c Consultant's Email address:
0
O Circle N if the as-built value differs from the Plan. If N is circled, provide an explanation on Page 2.
OO N/E = not evaluated (provide explanation on page 2) ON/A = not applicable to this SCM or project.
Consultant's Certification NCAC .1003((3) & General MDC OO As built OO N/E ON/A
.1050
A. TREATMENT REQUIREMENTS
1. The SCM achieves runoff treatment. Y or N X
2. The SCM achieves runoff volume match. Y or N X
3. Runoff from offsite areas and/or existing BUA is Y or N X
bypassed.
4. Runoff from offsite areas and/or existing BUA is directed Y or N
into the permitted SCM and is accounted for at the full X
build-out potential.
5. The project controls runoff through an offsite permitted Y or N X
SCM that meets the requirements of the MDC.
6. The net area of new BUA increase for an existing project Y or N
has been accounted for at the appropriate design storm X
level.
7. The SCM(s) meets all the specific minimum design Y or N X
criteria.
B. VEGETATED SETBACKS / BUA
1. The width of the vegetated setback has been measured © or N
from 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 OY or N
vegetation.
3. BUA that meets the requirements of NCGS 143-214.7 Y or N X
(b2)(2) is located in the setback.
4. BUA that does not meet the requirements of NCGS 143- Y or N
214.7 (b2)(2) is located within the setback and is limited X
to:
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Post-Construction Stormwater Management
Permit No. SW1170501
a. Publicly funded linear projects (road, greenway
sidewalk)
b. Water-dependent structures
c. Minimal footprint uses (utility poles, signs, security
lighting and appurtenances)
5. Stormwater that is not treated in an SCM is released at L'.J or N
the edge of the setback and allowed to flow through the
setback as dispersed flow.
@As-built O- N/E OO N/A
C. STORMWATER OUTLETS --the outlet handles the peak Y or N
flow from the 10 year storm with no downslope erosion.
D. VARIATIONS
1. A variation (alternative) from the stormwater rule Y or N X
provisions has been implemented.
2. The variation provides equal or better stormwater control Y or N X
and equal or better protection of surface waters.
E. COMPLIANCE WITH OTHER REGULATORY PROGRAMS Y or N
has been met.
1NG -the volume of the SCM takes the runoff from all
surfaces into account and is sufficient to handle the required Y or N X
storm depth.
G. CONTAMINATED SOILS — infiltrating SCMs are not _._Y or N X
located in or on areas with contaminated soils.
H. SIDE SLOPES
1. Vegetated side slopes are no steeper than 3H:1V. Y or N X
2. Side slopes include retaining walls, gabion walls, or Y or N X
other surfaces that are steeper than 3H:1 V.
3. Vegetated side slopes are steeper than 3H:1 V (provide Y or N X
supporting documents for soils and vegetation).
I. EROSION PROTECTION
1. The inlets do not cause erosion in the SCM. Y or N X
2. The outlet does not cause erosion downslope of the Y or N
discharge point during the peak flow from the 10 year X
storm.
J. EXCESS FLOWS—An overflow I bypass has been Y or N X
provided.
K. DEWATERING —A method to drawdown standing water has Y or N X
been provided to facilitate maintenance and inspection.
L. CLEANOUT AFTER CONSTRUCTION —the SCM has been Y or N X
cleaned out and converted to its approved design state.
M. MAINTENANCE ACCESS
1. The SCM is accessible for maintenance and repair. Y or N X
2. The access does not include lateral or incline slopes Y or N X
>3:1.
N. DESIGNER QUALIFICATIONS (FAST-TRACK PERMIT) —
The designer is licensed under Chapters 89A, 89C, 89E, or Y or N
89F of the General Statutes.
Provide an explanation for every MDC that was not met, and for every item marked "N/A" or "N/E",
below. Attach additional pages as needed:
The project was designed/permitted/ccrostructed as a low-density development with no permanent SCMs.
•
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Post-Construction Stormwater Management
Permit No. SW1170501
AS-BUILT DESIGNER'S CERTIFICATION FOR LOW DENSITY PROJECTS
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.1003, 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 or phase Acony Bell - Phase 3
❑ 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 project are provided.
Eric Hutchison, PE Signature -1 ( ""
Printed Name 9
NC Registration Number 051824 Date 1 /1/Z)
SEAL: \\\\\0\WW II?!ito,0,i/ Consultant's Mailing Address:
\ Q%..H•CARO/ Brooks Engineering Associates - 15 Arlington St
ti .v ;
E ql' : City: Asheville State: NC Zip: 28801
At.
51824 = Phone:[phone]
;'••. its)43 1
•F
(NO ��.$' Consultant's Email address:
/ '�✓7UTCHIS(3*��``��' [e-mail]
i0 Circle N if the as-built value differs from the Plan/permit. If N is circled, provide an explanation on page 3.
OO N/E = Not Evaluated (provide explanation on page 2). ON/A = Not Applicable to this project/plan.
Consultant's Certification (MDC 15A NCAC 02H .1003)
Project Density and Built-Upon Area iWAs-built OO N/E ON/A
1. The project has areas of high density based on natural drainage Y or ON
area boundaries, variations in land use or construction phasing.
2. The project's built-upon area does not exceed the maximum limit Oor N
specified in the permit.
Dispersed Flow WAs-built OO N/E ON/A
1. The project maximizes dispersed flow through vegetated areas Oor N
and minimizes channelized flow.
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I

Post-Construction Stormwater Management
Permit No. SW1170501
Vegetated Conveyances (OAs-built ®N/E ®N/A
1. Stormwater that is not released as dispersed flow is transported Y or N
by vegetated conveyances.
2. The project has a minimal amount of non-vegetated conveyances Y or N
to reduce erosion.
3. Other than minimal piping under driveways and roads, no piping or N
has been added beyond what is shown on the approved plans.
4. Side slopes are no steeper than 3H:1V. ®Y or N
5. The conveyance does not erode in response to the peak flow from Y or N
the 10-year storm.
Curb outlet systems (if applicable) OAs-built OO N/E OO N/A
1, The swale or vegetated area can carry the peak flow from the Y or N X
10-year storm at a non-erosive velocity.
2. The longitudinal slope of the swale or vegetated areas does not Y or N
exceed 5°A,. " X
3. The swale has a trapezoidal cross-section and a minimum bottom Y or N X
width of two feet.
4. The minimum length of the swale or vegetated area is 100 feet. Y or N X j 5. Side slopes are no steeper than 3H:1 V. Y or N X
6. The project utilizes treatment swales designed per Section .1061 Y or N X
in lieu of the curb outlet system requirements.
Vegetated Setbacks (if applicable) OO As-built OO N/E ON/A
1. The width of the vegetated setback is at least 50'. Y or N X
2. The width of the vegetated setback has been measured from the 1
normal pool of impounded waters, the MHW line of tidal waters, Y or N X
or the top of bank of each side of rivers or streams.
3. The vegetated setback is maintained in grass or other vegetation. Y or N X
4. BUA that meets the requirements of NCGS 143-214.7(b2)(2) is Y or N X
located in the setback.
5. BUA that does NOT meet the requirements of NCGS 143-
214.7(b2)(2) is located within the setback and is limited to:
• Publicly-funded linear projects (road, greenway, or sidewalk) Y or N X
• Water dependent structures
• Minimal footprint uses such as poles, signs, utility
appurtenances,and security lights. —
F 6. The amount of BUA within the setback is minimized, and Y or N
X
channeling of the runoff from the BUA has been avoided.
7. Stormwater is not discharged (via swale or pipe) through a
vegetated setback. Stormwater is released at the edge of the Y or N X
l'. setback and allowed to flow through the setback as dispersed flow.
I' !.
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1

Post-Construction Stormwater Management
Permit No. SW1170501
Outlets OAs-built ©N/E ON/A
1. Stormwater outlets do not cause erosion downslope of the or N
discharge point during the peak flow from the 10-year storm.
Variations OAs-built ON/E OO N/A
1. The project has variations from the MDC that were not previously y or N
approved. (Modification may be required.)
Deed restrictions (if applicable) OAs-built ON/E ON/A
1. Deed restrictions are recorded and ensure that the project and
the BUA will be maintained in perpetuity consistent with the Y or N
permit, approved plans, and specifications.
For Subdivisions Only (Residential or Commercial) OAs-built ON/E ON/A
1. The number of platted lots is consistent with the approved plans. Y or N X
2. The project area is consistent with the approved plans. Y or N X
•
3. The layout of the lots and streets is consistent with the approved Y or N X •
plan. •
4. The width/radius of streets, paved accesses,cul-de-sacs and
Y or N X
sidewalks is consistent with the approved plan.
5. No piping, other than those minimum amounts needed under a y or N X
driveway or under a road, has been added.
6. The lot grading, road grading,vegetated conveyances, piping,
inverts, and elevations are consistent with the approved plans. Y or N X
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.
This project is not a subdivision and does not utilize curb outlet systems or permanent SCMs.
j.
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