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HomeMy WebLinkAbout20081230 Ver 1_More Info Received_20080902Michael F. Easley. Governor William G. Ross Jr., Secretary North Carolina Depaartrnent of Environment and Natural Resources Cohen H. Sullins, Director Division of Water Quality August 21, 2008 CERTIFIED MAIL: RETURN RECEIPT REQUESTED Ms. Edith W. McGuinn 13033 Powell Road Wake Forest, NC 27587 DWQ Project # 08-1230 W ke County NSF P 2 2008 ptNR -''RI ER QU#IFY VETIN'OS tWO STORMWATER BRANCH Subject Property: Watldea Glee Ut to Falls Lake/ft to Lowery Creek [030401, 27-16.7-(2), WSIV, NSW, CA] REQUEST FOR MORE INFORMATION Dear Ms. McGuinn: On August 13, 2008, the Division of Water Quality (DWQ) received your application dated August 5, 2008, to fill or otherwise impact 79 linear feet of intermittent stream and 3,240 square feet of Zone I Neuse River basin protected riparian buffers and 2,000 square feet of Zone 2 Neuse River basin protected riparian buffers to construct a residential development at the site. The DWQ has determined that your application was hwmnplete and/or provided inaccurate information as discussed below. The DWQ will require additional information in order to process your application to impact protected wetlands and/or streams on the subject property. Therefore, unless we receive five copies of the additional information requested below, we will place this project on hold as hwAmplete until we receive this additional information. Ifwe do not receive the requested information, your project will be formally returned as incomplete. Please provide the.following information so that we may continue to review your project. Additional Information Requested: 1. Please re-submit your site plans on full plan sheets at a scale of no smaller than 1 "=50' with topographic contours shown. 2. Please provide building envelopes for all lots with wetlands, streams or buffers on the site plans. 3. Please locate all isolated or non-isolated wetlands, streams, and other waters of the State as overlays on the site plan. 4. Please locate all of the protected riparian buffers as overlays on the site plan, clearly showing Zone I and Zone 2. 5. Per the requirements of the Neuse River Basin Riparian Buffer Rule, you must show that this site meets diffuse flow requirements with a level spreader or other BMP per Chapter 8 of the BMP Manual (see hLtp://h2o.enr.state.ne.us/su/bmp forms.htm). NonehCarolina 401 Oversight/Express Review Permitting Unit yawn li; 1650 Mail Service Center, Raleigh North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Rale*k North Carolina 27604 Pleme: 919-733-1786 / FAX 919-7336893 / Internet: fhtpJAr2o.ew atate.nc.us/ncwcdands ._ ... i. m _.-. _...._ • ?.... r...-f-.._ CA" Ms. Edith W. McGuinn Page 2 of 2 August 21, 2008 6_ Please provide proposed septic fields on all lots with buffers or wetlands showing that additional buffer andfor wetland impacts will not be required. Please submit this information within 30 calendar days of the date of this letter. If we do not receive this requested information within 30 calendar days of the date of this letter, your project will be withdrawn and you will need to reapply with a new application and a new fee. This letter only addresses the application review and does not authorize any impacts to wetlands, waters or protected buffers. Please .be aware that any impacts requested within your application are not authorized (at this time) by the DWQ. Please call Ms. Cyndi Karoly or Mr. Ian McMillan at 919-733- 1786 if you have any questions regarding or would like to set up a meeting to discuss this matter. Sincere , Cyndi Karoly, Supervisor 401 Oversight/Express Review Permitting Unit CBKlym cc: Lauren Witherspoon, DWQ Raleigh Regional Office USACE Raleigh Regulatory Field Office File Copy Central Files Filename: 081230WatkinsG1en(W ake)On_Hold OaOF W A r£9?G M g ? y ATA O c NWENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be completely filled out, printed and submitted. DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)! Project name Watkins Glen Contact name Trenton D. Stewart, PE Phone number 919-363-1422 Date April 30, 2008 Drainage area number 1 For Level Spreaders Receiving Flow From a BMP Type of BMP Drawdown flow from the BMP For Level Spreaders Receiving Flow from the Drainage Area Drainage area Impervious surface area Percent impervious Rational C coefficient Peak flow from the 1 in/hr storm Time of concentration Rainfall intensity, 10-yr storm Peak flow from the 10-yr storm Where Does the Level Spreader Discharge? To a grassed bioretention cell? To a mulched bioretention cell? To a wetland? To a filter strip or riparian buffer? Other (specify) Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass Width of dense ground cover Width of wooded vegetation Total width Elevation at downslope base of level 10 Elevation at top of bank of the receiving water Slope (from level lip to to top of bank) Are any draws present? Level Spreader Design Forebay surface area Feet of level lip needed per ds Answer "Y" to one of the following sq ft 65 fuds Length based on the 1 in/hr storm? (Y or N) Length based on the 10-yr storm? Y (Y or N) Length based on the BMP discharge rate? (Y or N) Design flow 0.26 cfs Is a bypass device provided? N (Y or N) cfs 3,860.00 ft' 1,350.00 ft' 34.97 % 0.40 0.04 cfs 5.00 min 7.22 in/hr 026 cfs N (Y or N) N (Y or N) N (Y or N) Y (Y or N) Please complete filter strip characterization below. 0.00 ft 0.00 ft 50.00 ft 50.00 ft 425.00 fmsl 420.00 fmsl 10.00 % N (Y or N) Level spreaders must be placed in series. OK A bypass device is not needed. Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and ll. Design Summary, page 1 of 3 Length of the level lip Are level spreaders in series? Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): 16.70 N (Y or N) (Y or N) (Y or N) Level spreader length OK. Do not complete this section of the worksheet. Do not complete this section of the worksheet. Do not complete this section of the worksheet. Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and H. Design Summary, page 2 of 3 M ft B ft w ft y ft Peak velocity in the channel during the 10-yr storm cfs Channel lining material w M B Do not compete this section of the worksheet. Do not compete this section of the worksheet. Do not compete this section of the worksheet. Do not compete this section of the worksheet. Do not compete this section of the worksheet. Do not compete this section of the worksheet. M Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 3 of 3 p ?' ? ?3 ? o?QF warFAPAA o > y NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be completely filled out, printed and submitted. DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)! P Project name Watkins Glen Contact name Trenton D. Stewart, PE Phone number 919-363-1422 Date April 30, 2008 Drainage area number 2 For Level Spreaders Receiving Flow From a BMP Type of BMP Drawdown flow from the BMP cfs For Level Spreaders Receiving Flow from the Drainage Area Drainage area 18,865.00 ft' Impervious surface area 5,410.00 ftz Percent impervious 28.68 % Rational C coefficient 0.43 Peak flow from the 1 inlhr storm 0.19 cfs Time of concentration 5.00 min Rainfall intensity, 10-yr storm 7.22 in/hr Peak flow from the 10-yr storm 1.34 cfs Where Does the Level Spreader Discharge? To a grassed bioretention cell? N (Y or N) To a mulched bioreteMlon cell? N (Y or N) To a wetland? N (Y or N) To a filter strip or riparian buffer? Y (Y or N) Please complete filter strip characterization below. Other (specify) Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass 0.00 ft Width of dense ground cover 0.00 ft Width of wooded vegetation 50.00 ft Total width 50.00 It Elevation at downslope base of level 10 427.00 fmsl Elevation at top of bank of the receiving water 420.00 fmsl Slope (from level lip to to top of bank) 14.00 % Level spreaders must be placed in series. Are any draws present? Y (Y or N) Level spreader cannot be located upslope of a draw. Level Spreader Design Forebay surface area sq ft Feet of level lip needed per ds; 65 ftlcfs Answer "Y" to one of the following: Length based on the 1 inlhr storm? (Y or N) Length based on the 10-yr storm? Y (Y or N) Length based on the BMP discharge rate? (Y or N) Design flow 0.19 cfs Is a bypass device provided? N (Y or N) A bypass device is not needed. Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 3 Length of the level lip Are level spreaders in series? Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): 88.00 It Level spreader length OK. (Y or N) (Y or N) Do not complete this section of the worksheet. (Y or N) Do not compete this section of the worksheet. Do not complete this section of the worksheet. Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev5 Parts I. and II. Design Summary, page 2 of 3 M B W Y Peak velocity in the channel during the 10-yr storm Channel lining material 1 M ft Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. cfs Do not complete this section of the worksheet Do not complete this section of the worksheet w B 1 M Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 3 of 3 McGuinn Subdivision Lot #1 5-Bedr-oom System Layout 141 ' SCH 40 2" Supply Line TBM -3).9 ea Gl System: Pressure Manifold Lines: 6-8, (510') Accepted Status System 0.3 Soil LTAR 18" Trench Bottom Repair: Pressure Muni+ old Lines: 1-5, (500') Accepted Status System 18" Trench Bottom 0.3 Soil LTAR GRAPHIC SCALE 1 " _- 50' 50 0 50 100 Central Carolina :S.-it horr zuf -ting 919-7;34- x+44" Project It 46? f-0' Well Access Easement NEW 6" WATER LINE 17 McGuinn Subdivision Lot #3 S-Bedroor, System Layout 7 1j 106.327 SF 2.44 AC f. GRAPHIC SCALE 1 " = 100' System: Pressure Manifold Lines: 7 -1 (5 "1 Accepted Status Sv'_:i finl 0.3 Soil LTAR 18" Trench Botton s Repair: Pressurr- it. oriffold Lines: 1 -G, (50()') Accepted Stati.rs "??vstem 0.3 Soil LTAR 18" Trench Bottom 100 0 100 200 Central Co.roliv Sr}il Cnr??r.rltir?r? 919-784 -9449 Prey jec t # 467 McGuinn Subdivision Lot #4 )-Bedroom System Layouit 101,248 SF 2.32 AC "House -*?~ -0 2' 5,pqoy `"` ?fBhd 3.1 GRAPHIC SCALE 1 " = 100' System: Pressure t`?_lnil?::ylci Lines: 5 b-8, (5, )') Accepted Status Sv :Ii,n^. 0.3 Soil LTAR 18" Trench Bottom Repair: Pressure Manifold Lines: 'I -5a, ( 50 1 ') Accepted Status System 0.3 Soil LTAR 18" Trench Botton- 100 0 100 200 i Sr?it E OIISt0Plt] 1411:.4 -7.4-9449 Pro iect # 467 McGuinn Subdivision Lot #5 5-Bedroom Slystem Layout i 112,051 SF 2.5 AC jt1 ct' System: PreSSUre ` cinifold Lines: 7 -1-1, (51.'; v;' Accepted Status SV:;-t,: rn 0.3 Soil LTAR 18" Trench Bottom Repair: Pressure Manifold Lines: 1 -G, (501. ) Accepted Status `"Ystern 0.3 Soil LTAR 18" Trench Bottom GRAPHIC SCALE 1 " = 100' 100 0 100 200 _-,o;f Consul tit 19 91_1-7,34-9449 Project # 467 McGuinn Sub divisors Lot 6 4-Bedroom System Layout f' System: Pump to D--Pyc", Lines: 5-8:. (400') Accepted Status System 0.3 Solt L TAR 18" Trench Botton Repair Presst_tre Manil`cttcl Line,5: 1-4. f402'; Accepted `: to tus. Sy-. t!-n 18" Trench Bottorff 0.3 Soil LTAF 0 m T1- ?i 71 F9 III' SCH 40 2" Supply GRAPHIC SCALE 1 " = 60' J? 1 DDi Proposed House Location l? 10 ,?00 0 U B.] 1? 0( ?6 fed ,0 h ?e v0- 0 Ropo? Goco4a? No foundation di aln_. 60 0 60 120 J ? t f/ a D o oaOn 7 4 0 ? O h ? b 0?C9e 00 186,348 SF T ? 8 IB C P op?J ?h it`d (ono oq. 60'0 PCIPULA 41 CGLA inn Lab(1ivis i(.) I Lot -44-Bedroom 1; )y s±t,1"-I L ,.?-,l No foundation dre;ins System: Grovity ro D-l:?ox Lines: 4-5, (400') Accepted Status `_Sysf.;- , 0.3 Soit L T AR 18" Trench Bottom Repair: Pressure more l-Ad Lines 1-3, 6, C4RM Accepted Status Sv-. r r 18" Trench Bottorff 0.3 Soil LTAR GRAPHIC SCALE 50 0 50 100 Central Carolina SON corrsoting 919-724-9449 Project 4 467 MclAt'linn Subdivision Lot #8 S--Lcdr-oom System Layout 116 Pink 10100" 15 ven 200 ?s C9 79,939 SF 1.84 AC Proposed House an.% rxa?? Location •15' SCH 10 'iupph tine System: F'ressut-e h'o t,i?;_lcl Lines: 1--3, 11500' Accepted Status 0.3 Soil LTAR 18' Trench Bottom Repair: Pressur-e Mat it'rr:c Lines: 4-6. (500' Accepted Status Syst r, 18" Trench Bottom 0.3 Soil LTAR GRAPHIC SCALE 1 " = 60' 60 0 60 1?0 Ff_rtl-ol cor otino Pr°:, jct it 4?7 Mcvuinn Subdivision Lot #9 5-Beelroom System Layout )?l0 77.,. JJ Pink 145- -,.Z- r/4 Red 150' '5 Oron e 125 #6 Yellow 112255' 60' SCH 40 2" Supply Line ea 7 Slue 12 ,' d$ Pink ::'S' a I e? rorp. ro ?O Proposed \ House ooa Locotion 66,41 7 SF 1.53 AC System- Pump to D-Br.. Lines 5-8, -:500'? Accepted Status Sys t. rF-r 0.3 Soit LTAR 18" Trench Bottom Repair: Pump to D-Bc- Lines: 1-4, C505'? Accepted Statu=. Sv }em 18" Trench Bottom 0.3 Soit LTAR GRAPHIC SCALE 1 ' = 60' 60 0 60 120 cen h-cit crarolino 'Soit coPlsultirrg 919-764-9449 Project N 467 McGuinn Subdi'vi-iori Lot ?k10 5---Bedroom System Layout: 190' Sd/ 40 Supply L- i? i? Proposed House Location f 77,381 SF 1.78 AC System: Pressur Morlifvl+ Lines: "1 -5 Accepted Statusysker?? 0.3 Soil LTAR 18" Trench Bott,_:,11-1 Repair: Pressur, MoniEold Lines: 0-10, ? 0 0') Accepted Stott-is System 0.3 Soil l_tAl "18" Trench Bottom GRAPHIC SCALE 1 " = 100' 100 0 100 200