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HomeMy WebLinkAboutSW3170303_As-Built - Certification_20240701 Post-Construction Stormwater Management Permit No. SW (regional office#& permit#) 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 #? WET POND #7 e❑ heck 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. — / C , , / Printed Name C• /MATTHEW JONES Signature -- NC Registration Number 034'936 _ Date JUNE 77, 2024' / SEAL: ��`` tifffrrrrrr,11i Consultant's Mailing Address: ti% CA o ,.•.F Esso••,i� ; 7079 THORNSBY LANE �: q- .�=7 � /MATTHEWS NC 28705 Q. • SEAL f ' =• City/State/ZIP 0 -. 34936 i cn Phone Number (7049 4'72-8523 r •,0 1j •.•4G1NE ,0,�. Consultant's Email address: "I'silif iiii;.�`��,`` /Matt@JonesCivilDesign•com O Circle N if the as-built value differs from the Plan. If N is circled, provide an explanation on Page 2. ON/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 ®As-built I ON/E ON/A .1050 _ A. TREATMENT REQUIREMENTS 1. The SCM achieves runoff treatment. Y or N N/E 2. The SCM achieves runoff volume match. Y or N N/E 3. Runoff from offsite areas and/or existing BUA is Y or N N/E 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 N/E build-out potential. 5. The project controls runoff through an offsite permitted Y or U SCM that meets the requirements of the MDC. 6. The net area of new BUA increase for an existing project U or N has been accounted for at the appropriate design storm level. 7. The SCM(s) meets all the specific minimum design Y or N N/E criteria. B. VEGETATED SETBACKS/ BUA 1. The width of the vegetated setback has been measured O 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 O or N vegetation. 3. BUA that meets the requirements of NCGS 143-214.7 Y or ON (b2)(2) is located in the setback. 4. BUA that does not meet the requirements of NCGS 143- y or NO 214.7 (b2)(2) is located within the setback and is limited to: Page 3 of 9 Post-Construction Stormwater Management Permit No. SW (regional office#& permit#) 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 O or N the edge of the setback and allowed to flow through the setback as dispersed flow. ®As-built ON/E ON/A C. STORMWATER OUTLETS —the outlet handles the peak Y or N AYE flow from the 10 year storm with no downslope erosion. D. VARIATIONS 1. A variation (alternative) from the stormwater rule provisions has been implemented. Y or 2. The variation provides equal or better stormwater control Y or N N/A and equal or better protection of surface waters. E. COMPLIANCE WITH OTHER REGULATORY PROGRAMS O or N has been met. F. SIZING -the volume of the SCM takes the runoff from all surfaces into account and is sufficient to handle the required Y or N N/E storm depth. G. CONTAMINATED SOILS —infiltrating SCM's are not Y or N N/E located in or on areas with contaminated soils. H. SIDE SLOPES 1. Vegetated side slopes are no steeper than 3H:1V. or N 2. Side slopes include retaining walls, gabion walls, or Y or NO other surfaces that are steeper than 3H:1V. 3. Vegetated side slopes are steeper than 3H:1V (provide Y or ON supporting documents for soils and vegetation). I. EROSION PROTECTION 1. The inlets do not cause erosion in the SCM. Y3 or N 2. The outlet does not cause erosion downslope of the Y or N discharge point during the peak flow from the 10 year storm. J. EXCESS FLOWS —An overflow/ bypass has been Y or N provided. K. DEWATERING—A method to drawdown standing water has GJ or N been provided to facilitate maintenance and inspection. L. CLEANOUT AFTER CONSTRUCTION —the SCM has been Y or cleaned out and converted to its approved design state. M. MAINTENANCE ACCESS 1. The SCM is accessible for maintenance and repair. (Y� or N 2. The access does not include lateral or incline slopes Y or N >3:1. N. DESIGNER QUALIFICATIONS (FAST-TRACK PERMIT)— The designer is licensed under Chapters 89A, 89C, 89E, or O 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: Page 4 of 9 Project Name STORAGE Permit# SW8 SW3770303 AS-BUILT DESIGNER'S CERTIFICATION FOR WET DETENTION POND PROJECT 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# Wet Pond #1 ❑ 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 Name C• MATTNEW JOKES Signature NC Registration Number 034936 Date JUNE 79, 202q SEAL: * #ff Consultant's Mailing Address: +`* • A O t '# 7079 T�IORNSBY 1ANE SEAL '-37 : t I City: MATTHEWS State: NC Zip: 28105 • c 34936 • 4' Phone: (704) '112-8523 si.th `' `,��*' Consultant's Email address: r�rr�iMit4ti►+► /Y1att@JonesCivilDesign•com O Circle N if the as-built value differs from the Plan/permit. If N is circled, provide an explanation on page 2. OO N/E = Not Evaluated (provide explanation on page 2). 3N/A= Not Applicable to this project or SCM. This Certification must be completed in conjunction with the General MDC certification under 15A NCAC 02H.1050. Consultant's Certification (MDC 15A NCAC 02H .1053) Forebay/Depths/ Fountain •As-built OO N/E OO N/A 1. The available Sediment storage is consistent with the approved Y or N N/E plan and is a minimum of 6 in. 2. Water flow over the forebay berm into the main pond occurs at a Y or N N/E non-erosive velocity. 3. The provided Forebay Volume is 15%-20% of the main pool O or N volume. 4. The Forebay entrance elevation is deeper than the exit elevation O or N into the pond. 5. The Average Design Depth of the main pond below the Y or N N/E permanent pool elevation is consistent with the permitted value? 6. Fountain documentation is provided. Y or N N/E NCDEQ 2/9/2018 Project Name ALLEN STORAGE Permit# SW8 5W3770303 Side slopes/ Banks/Vegetated Shelf @As-built OO N/E 3N/A 1. The width of the Vegetated Shelf is consistent with the approved Y or N N/E plans and is a minimum of 6 feet. 2. The slope of the Vegetated Shelf is consistent with the approved Y or N N/E plans and is no steeper than 6:1. As-built Main Pool /Areas/Volumes/ Elevations @As-built OO N/E 3N/A 1. The permanent pool surface area provided is consistent with the y or N AYE permitted value. 2. The Temporary Pool Volume provided is consistent with the Y or N N/E permitted value. 3. The permanent pool elevation is consistent with the permitted Y or N value. N/E 4. The temporary pool elevation is consistent with the permitted y or N value. N/E Inlets/Outlet/ Drawdown @As-built OO N/E 3N/A 1. The design volume draws down in 2-5 days. Y or N AVE 2. The size of the Orifice is consistent with the permitted value. Y or N A//E 3. A trash rack is provided on the outlet structure. Y or N N/E 4. Hydrologic impacts to the receiving channel are minimized from yO or N the 1 yr 24-hr storm discharge? 5. The inlets and the outlet location are situated per the approved yO or N plan and avoid short-circuiting. Vegetation ©As-built CO N/E ©N/A 1. The vegetated shelf has been planted with a minimum of 3 Y or N diverse species. N/E 2. The vegetated shelf plant density is consistent with the approved plans and is no less than 50 plants per 200 sf or no Y or N AVE less than 24 inches on center. 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. ALL "N/E" ANSWERS ARE BECAUSE THE PREVIOUSLY PERMITTED BASIN HAS NOT YET BEEN COMPLETED NOR CONVERTED TO A PERMANENT SCM, AND NO EVALUATION COULD BE PERFORMED ON THOSE ITEMS• NCDEQ 2/9/2018