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HomeMy WebLinkAboutSW3121201_DESIGNER'S CERTIFICATION_20200622dIETTI G3 @IF 4 ^ [YIMIDVU&I F. YARBROUGH-WILLIAMS & HOULE, INC. P.O. Box 1198 Pineville, NC 28134 (704) 556.1990 Fax (704) 556-0505 lug 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: l.J 12 Z o 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 Page 7 of 7