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HomeMy WebLinkAboutSW6210202_SuppEZ-Version-2.1.3_20210512SUPPLEMENT-EZ COVER PAGE FORMS LOADED PROJECT INFORMATION 1 Project Name 2 Project Area ac 3 Coastal Wetland Area 4 Surface Water Area (a FT BRAGG SOF ADDITION 5.78 5 1 Is this project High or Low Density? High 6 1 Does this protect use an off -site SCM? Yes COMPLIANCE WITH 02H .1003(4) Width of vegetated setbacks provided feet N/A 8 Will the vegetated setback remain vegetated? N/A 97 9 If BUA is proposed in the setback, does it meet NCAC 02H.1003 4 c-d ? N/A 10 Is streambank stabilization proposed on this project? No NUMBER AND TYPE OF SCMs: 11 Infiltration System 12 Bioretention Cell 7 13 Wet Pond 14 Stormwater Wetland 15 Permeable Pavement 16 Sand Filter 17 Rainwater Harvesting RWH 18 Green Roof 19 Level Spreader -Filter Strip LS-FS 20 Disconnected Impervious Surface DIS 21 Treatment Swale 22 Dry Pond 23 StomnFilter 24 Silva Cell 25 Ba filter 26 Filterra FORMS LOADED DESIGNER CERTIFICATION 27 Name and Title: JERRY OBERHOLTZER, PROJECT MANAGER 28 Organization: LOWE ENGINEERS 29 Street address: 990 HAMMOND DRIVE, SUITE 900 30 City, State, Zip: ATLANTA, GA, 30328 31 1 Phone numbers : 770 857-8400 32 Email: JERRY.OBERHOLTZER@LOWEENGINEERS.COM Certification Statement: I certify, under penalty of law that this Supplement-EZ form and all supporting information were prepared under my direction or supervision, that the information provided in the form is, to the best of my knowledge and belief, true, accurate, and complete, and that the engineering plans, specifications, operation and maintenance agreements and other supporting information are consistent with the information provided here. Deslpner f NI rZ "g SEAL ss♦,f��A10ff��s' Seal )j'kj A Signature of Designer Date May 12, 2021 DRAINAGE AREAS 1 Is this a high density project? Yes 2 If so, number of draina a areas/SCMs 7 3 Does this roiect have low densit areas? No 4 F5 If so, number of low densitydrainage areas 0 Is all/part of this project subject to previous rule versions? No CLICK TO LOAD FORM Entire Site 1 2 3 4 5 4 T pe of SCM Bioretention Bioretention Bioretention Bioretention Bioretention 5 Total drainage area (sq ft 265482 29145 15301 37036 26132 33301 6 Onsite drainage area (sq ft 251952 29145 15301 37036 16677 26572 7 Offsite draina a area (sq ft 13530 9455 6729 8 Total BUA in project (sq ft 202032 sf 28429 sf 13504 sf 29621 sf 20286 sf 18295 sf 9permitting) New BUA on subdivided lots (subject to s ft N/A N/A N/A N/A N/A N/A 10permitting) New BUA not on subdivided lots (subject to s N/A N/A N/A N/A N/A N/A 11 Offsite BUA (sq ft 13530 sf 9455 6729 12 Breakdown of new BUA not on subdivided lots: Parking (sq ft 105215 sf 24829 sf 13504 sf 29621 sf 7205 sf Sidewalk (sq ft 646 sf 550 sf Roof (sq ft 30000 sf Roadway s ft 19284 sf 10831 sf 10540 sf Future (sq ft Other, please specify in the comment box below (sq ft 13 New infiltrating permeable pavement on subdivided lots (sq ft 14 New infiltrating permeable pavement not on subdivided lots (sq ft 15permitting) Existing BUA that will remain (not subject to s ft 16 Existina BUA that is already permitted (sq ft 110337 sf 17 Existing BUA that will be removed (sq ft 110337 sf 18 Percent BUA 76% 85% 88% 80% 80% 69% 19 Design storm inches 1.0 in 1.0 in 1.0 in 1.0 in 1.0 in 1.0 in 20 Design volume of SCM cu ft 1752 cf 950 cf 1969 cf 1616 cf 1258 cf 21 Calculation method for design volume SCS SCS SCS SCS SCS SCS ADDITIONAL INFORMATION 22 Please use this space to provide any additional information about the drainage area(s): Individual drainage areas do not sum to total site drainage area. Pervious bypass areas will consist of lawn, so uncaptured runoff (if any) will be minimal. Impervious bypass areas drain to existing structures which are to remain, so there will be no increase in uncaptured runoff resulting from DRAINAGE AREAS 1 Is this a high density project? Yes 2 If so, number of draina a areas/SCMs 7 3 Does this roiect have low densit areas? No 4 F5 If so, number of low densitydrainage areas 0 Is all/part of this project subject to previous rule versions? No CLICK TO LOAD FORM Entire Site 6 4 T pe of SCM Bioretention 5 Total drainage area (sq ft 265482 34412 6 Onsite drainage area (sq ft 251952 34412 7 Offsite drainage area (sq ft 13530 8 Total BUA in project (sq ft 202032 sf 30056 sf 9permitting) New BUA on subdivided lots (subject to s ft N/A N/A 10permitting) New BUA not on subdivided lots (subject to s N/A N/A 11 Offsite BUA (sq ft 13530 sf 12 1 Breakdown of new BUA not on subdivided lots: Parking (sq ft 105215 sf 30056 sf Sidewalk (sq ft 646 sf Roof (sq ft 30000 sf Roadway s ft 19284 sf Future (sq ft Other, please specify in the comment box below (sq ft 13 New infiltrating permeable pavement on subdivided lots (sq ft 14 New infiltrating permeable pavement not on subdivided lots (sq ft 15permitting) Existing BUA that will remain (not subject to s ft 16 Existina BUA that is already permitted (sq ft 110337 sf 17 Existing BUA that will be removed (sq ft 110337 sf 18 Percent BUA 76% 87 0 19 Design storm inches 1.0 in 1.0 in 20 Design volume of SCM cu ft 2246 cf 21 Calculation method for design volume SCS SCS ADDITIONAL INFORMATION 22 Please use this space to provide any additional information about the drainage area(s): Individual drainage areas do not sum to total site drainage area. Pervious bypass areas will consist of lawn, so uncaptured runoff (if any) will be minimal. Impervious bypass areas drain to existing structures which are to remain, so there will be no increase in uncaptured runoff resulting from OFF -SITE SCM THE DRAINAGE AREA 1 Drainage area number for this project 2 Master permit number 3 Drainage area number from the master permit 4 Lot or outparcel number 5 jBLIA allocated by Master Permit INFORMATION ABOUT THE OFF -SITE SCM 6 Type of off -site SCM 7 Available treatment capacity in the off -site SCM (cu ft) 8 Have deed restrictions limiting the BUA on the site been recorded? 9 Has an Engineer's Certification for the off -site SCM been submitted to DEQ? 10 Are there any Notices of Violation for the off -site system? 11 Has the off -site SCM been maintained in accordance with its O&M Plan? 12 Will the collection system be maintained in its design state and kept clean? 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