SW3121201_DESIGNER'S CERTIFICATION_20200622

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YARBROUGH-WILLIAMS & HOULE, INC.
P.O. Box 1198 Pineville, NC 28134
[phone]
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WE ARE SENDING YOU ttached ❑ Under separate cover via
❑ Shop drawings ❑ Prints ❑ Plans
❑ Copy of letter ❑ Change order ❑
DATE`
20
JOB NO.
I
ATTENTION
RE:
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the following items:
❑ Samples ❑ Specifications
COPIES
DATE
NO.
DESCRIPTION
C, s
REGEIVED
AUN 2 706
DENR-DEMIR
�dooresville Regi 1n 016oa
THESE ARE TRANSMITTED as checked below:
❑
For approval
❑
For your use
❑
As requested
❑
For review and comment
❑
FORBIDS DUE
kApproved as submitted
❑ Approved as noted
❑ Returned for corrections
❑ Resubmit copies for approval
❑ Submit copies for distribution
❑ Return corrected prints
❑ PRINTS RETURNED AFTER LOAN TO US
REMARKS
COPY TO
SIGNED:
If enclosures are not as noted, kindly notify us at once.

State Stormwater Permit
Permit No. SW31212O1
The Preserve at Marvin
Stormwater Permit No. SW3121201
Union County
Designer's Certification
I, Vincent G. Keene, PE , as a duty registered Engineer in the State of
North Carolina, having been authorized to observe (Eperiodically /F� weekly /
❑full time) the construction of the project,
The Preserve at Marvin
(Project Name)
for Toil Brothers (Project Owner) hereby state that, to the best of
my abilities, due care and diligence was used in the observation of the project construction
such that the construction was observed to be built within substantial compliance and intent
of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
SEAL
Signature
Registration Number
17637
Date June 19, 2020
Page 5 of 6

State Stormwater Permit
Permit No. SW3121201
Certification Requirements: I Page 2 of 2
X 1. The drainage area to the system contains approximately the permitted
acreage.
X 2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
X 3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
X 4. All roof drains are located such that the runoff is directed into the system.
X 5. The outlet/bypass structure elevations are per the approved plan.
X 6. The outlet structure is located per the approved_ plans.
X 7. Trash rack is provided on the outlet/bypass structure.
X 8. All slopes are grassed with permanent vegetation.
X 9. Vegetated slopes are no steeper than 3:1.
X 10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
X 11. The permitted amounts of surface area and volume have been provided.
X 12. Required drawdown devices are correctly sized per the approved plans.
X 13. All required design depths are provided.
X 14. All required parts of the system are provided, such as a sediment
chambers, sand chambers, under drains, and outlets.
X 15. The required dimensions of the system are provided, per the approved
plan.
Please submit this Designer's Certification to: Mooresville Regional Office
Surface Water Protection
610 East Center Ave., Ste. 301
Mooresville, NC 28115
Cc: Lisa Thompson - Village of
Marvin
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