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HomeMy WebLinkAbout19980026 Ver 1_COMPLETE FILE_19980114?,fj? {. .. State of North Carolina Department of Environment and Natural Resources Division of Water Quality James B. Hunt, Jr., Governor Wayne McDevitt, Secretary A. Preston Howard, Jr., P.E., Director MAI NC ENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES March 10, 1998 Mecklenburg County WQC 401 Project # 980026 APPROVAL of 401 Water Quality Certification Mr. Randy Moore Drainage Specialist Charlotte-Mecklenburg Stormwater 600 East Fourth Street Charlotte NC 28202-2844 Dear Mr. Moore: You have our approval, in accordance with the attached conditions, to place fill material in 335 linear feet of streams for the purpose of stabilizing the streambank of this intermittent stream, as you described in your application dated January 7, 1998. After reviewing your application, we have decided that this fill is covered by General Water Quality Certification Number 3102. This Certification allows you to use Nationwide Permit Number 13 when the Corps of Engineers issues it. In addition, you should get any other federal, state or local permits before you go ahead with your project including (but not limited to) Sediment and Erosion Control, Coastal Stormwater, Non-Discharge and Water Supply Watershed regulations. Also this approval will expire when the accompanying 404 or CAMA permit expires unless otherwise specified in the General Certification. This approval is only valid for the purpose and design that you described in your application. If you change your project, you must notify us and you may be required to send us a new application for a new certification. If the property is sold, the new owner must be given a copy of the Certification and approval letter and is thereby responsible for complying with all conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h). For this approval to be valid, you must follow the conditions listed in the attached certification. If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, P.O. Box 27447, Raleigh, N.C. 27611-7447. This certification and its conditions are final and binding unless you ask for a bearing. This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you have any questions, please telephone John Dorney at 919-733-1786. Sincerely, gowarr. P. Attachment Pon cc: Wilmington District Corps of Engineers Corps of Engineers Asheville Feld Office Mooresville DWQ Regional Office Mr. John Dorney Central Files 980026.1tr Division of Water Quality - Environmental Sciences Branch Environmental Sciences Branch, 4401 Reedy Creek Rd., Raleigh, NC 27607 Telephone 919-733-1786 FAX 919-733-9959 An Equal Opportunity Affirmative Action Employer - 50% recycled/10% post consumer paper KEMORANDUM PRINT NAMES: Reviewer: _ AMfI,e vU-C?h'A ?9? PO: JOHN DORNEY WQ SUPV.: ENVIRONMENTAL SCIENCES BRANCH DATE : 2 T-2 @ O SUBJECT: WETLAN D STAFF REPORT AND RECOMMENDATIONS -EACH ITEM MUST BE ANSWERED (USE N/A FOR NOT APPL ICABLo -FFR 10 PERMIT YR: 98 PERMIT NO: 0000026 COUNTY: MECLENBq4? TLANDS APPLICANT NAME: CITY OF CHARLOTTE R GROUP .4 ALITSECTION PROJECT TYPE: STREAM RELOCATION PERMIT TYPE: 13 COE II : DOT #: RCD_FROM_CDA: APP DATE FRM CDA: 01/14/98 REG OFFICE: MRO _ _ RIVER AND SUB BA SIN #: 030838 STR INDEX N0: 11-138-3 _ _ _ _ _ _ STREAM CLASS: C WL IMPACT? : Y/N WL TYPE: JAN 20 1998 WL_REQUESTED : WL ACR EST'FPVTRI" RNT" M LE G ,i,7bt UFFIU WL SCORE(#): WATER IMPACTED BY FILL?: Y/N MITIGATION?: Y/V MITIGATION-TYPE: 01A MITIGATION SIZE: DID YOU REQUEST MORE INFO?: Y/?) IS WETLAND RATING SHEET ATTACHED?: Y/(19-) / HAVE PROJECT CHANGES/CONDITIONS BEEN DISCUSSED WITH APPLICANT?: Y RECOMMENDATION (Circle One): ISSU ISSUE/COND DENY COMMENTS : %f/E ST,f 61!!V Is .S/??i?/?? 7C) $G IA17-CR #177CAI /o/?o MAP. <; RA'4 f 1S /( 1101F-5 G/e?-,PC OeS60V,,-':49 D? 7-h?--- s 7A- r,4 ? AAAI S . r C, T L? ?- i /fz fo7it) nF ? N S rCII a? /S 3 !R EF I ,/W / To l s? SLyD S. S i ?? SGo,O JAi?L C ?'G s /AX j1 c? 4y C - /ZS tf/U F?B2/L I)0- y1 ?q l / I ACr?K71-jG to SURM ? 1?C?`? IN FD?GM A?Io„? . 7lrFC / ARQi L I&' fl- L L ,c: Regional Office i J? s//u^?`,• Central Files ^) hKov ? Deb &y 7' c ,Ty. H Gc?? i1 r_'?/GGvIi-?? ? R V4 it y ?f'rV/ " +? chodoUe-Necklenburg -11 STORM ?A? Se?vlcef January 21, 1998 Certified Mail No.: P 411 363 061 Mr. Steve Lund U.S. Army Corps of Engineers Asheville Regional Office 151 Patton Avenue, Room 143 Asheville, NC 28801 Re: Supplement/Revision to PCN for 10803 Chestnut Hills Drive Storm Drainage Project Dear Mr. Lund: Per your discussion with Ms. Julie Stahl of Charlotte Storm Water Services on Friday, January 16, 1998 and our subsequent telephone conversation on Tuesday, January 20, 1998, I have enclosed a revised typical cross-section for the realigned channel. Please disregard the cross- section depicted on Figure 3, Page 1 of 4 of the January 07, 1998 original submittal of the Pre- Construction Notification for the above-referenced project. In addition, please replace Figure 2 of the original submittal with the revised Figure 2 (enclosed). Figure 2 was revised to reflect the filling of the existing channel bed. We hope these revisions address your concerns regarding the project design. We appreciate your cooperation in expediting the review of this project in order for the necessary inormation to be incorporated into the Charlotte-Mecklenburg Utility Department's design of a new project that will coincide with the construction of this project. If you have any questions or comments regarding this project, please contact Ms. Stahl (704/336-4626) or me (704/336-3643). r W. Moore ge Specialist cc: John Dorney, NCDENR, DWQ (7copies, Certified Mail No. P 411 363 062) Julie Stahl, CSWS Charlotte Storm'Water Services 600 East Fourth Street Charlotte, North Carolina 28202-2844 Telephone(704)336.4626 FAX(704)336.6586 To report drainage problems: 336-RAIN Printed on recycled paper • ?.IQOaSED ?B ~?.'? ?IN. • '? S Of- ?',s,,?,vv??- To r/LGr SAO i'%l?uc ew Ollrcw --t / I •?OV -?AI.G?i/?/?rY r .?.eer??T•?i?Eo ??> .G??-r..?vdas ?IPP?('OfG. ?crB.v?rXX? Ov J, F%GU•¢E e ..?.. ? .?`?, .s,?ia'ejl? .+?te.?d ?? ? ? '`?. V ?? ? ? ?1 °??? ? Z Q ? '? q ? ?? ? ? ?? ? ? ?? ti ? ?, 0 o? ?? ?? ?? '?v ?? .?..1` TRIAGE CHECKLIST Project Name: 14 91- Project Number: ?(Y 26 County: / ?6 The attached project has been sent to you for review for the following reasons. Please consider whedhcr a site visit is needed to determine the impacts. Particular attention should focus on the below checked items. Please feel free to call the central office staff member assigned to your region if you need assistance. Stream length impacted. ll'ztloo?1 v Stream determination (i.e. intermittent or perennial, or any channel present)__A?, f?;e Adif-K/K IAO S i?t?tl T Wetland impact and distance to blue-line surface waters on USGS topo map. ??vr - Minimization/avoidance options. NTNV l-!. (is access to hiQhgound or wetlands)'? Neuse buffer rules. Pond (water) fill (i.e. is the pond drained or holding water)? Pond creation (i.e. in uplands, in a drained channel, or in wetlands). Please locate streams and channels (if any) so that the central office can determine. Mideation ratios. Stormwater pond placed in wetlands. Ditching in wetlands. Is the applicant's proposed stream/wedand mitigation site available and viable? Applicant/consultant has a history of non-compliance (check drawings and application for accuracy). Has project been split from previous work to avoid mitigation requirements'? - Consistent with pre-application meetings? - Cumulative impact concerns. OTHER 11 2?3 rAlev Charloffe•Mocklenhurg STORM WATER Services v January 07, 1998 Certified Mail No.: Z 054 082 100 Mr. John Dorney NC Department of Natural Resources Division of Water Quality 4401 Reedy Creek Road Raleigh, NC 27626-0535 Re: Pre-Construction Notification for Storm Drainage Project at 10803 Chestnut Hills Drive Dear Mr. Dorney: Enclosed are 7 copies of the above-referenced Pre-Construction Notification. Please review this information for concurrence to use the general water quality certification for Nationwide Permit No. 13. If you have any questions or comments, please contact Ms. Julie Stahl (704/336-4626) or me (704/336-3643). 6iResfully submitted, - . Moore Specialist cc: Julie Stahl, CSWS ."v wtvM, AltB?NCH Charlotte Storm Water Services 600 East Fourth Street Charlotte, North Carolina 28202-2844 Telephone(704)336-4626 FAX(704)336-6586 To report drainage problems: 336-RAIN Printed on recycled naner. ChedoBe-Mecklenburg STORM WATER Services January 07, 1998 Certified Mail No.: Z 054 082 099 Mr. Steve Lund U.S. Army Corps of Engineers Asheville Regional Office 151 Patton Avenue, Room 143 Asheville, NC 28801 Re: Pre-Construction Notification for Storm Drainage Project at 10803 Chestnut Hills Drive Dear Mr. Lund: The purpose of this submittal is to request the U.S. Army Corps of Engineer's (COE) concurrence to use Nationwide Permit 26, for impacts to an unnamed tributary to Sixmile Creek located along the side property boundary of 10803 Chestnut Hills Drive in the Chestnut Hills Subdivision. The proposed activity is located within Mecklenburg County and is proposed by the City of Charlotte Storm Water Services. In accordance with our on-site discussion with you on December 11, 1997 we have adjusted our original design to incorporate meanders into the stream realignment. Enclosed for your review is one copy of the completed Pre-Construction Notification (PCN) form and relevant attachments including a narrative for PCN Items 12, 13 and 14, color photographs, USGS topographic quadrangle map (Figure 1), and two drawings that detail the existing and proposed conditions (Figures 2 and 3). As required for the PCN, 7 additional copies of this package are being provided to the North Carolina Department of Environment and Natural Resources, Division of Water Quality for their concurrence to use the general water quality certification for this project. If you have any questions or comments regarding this project, please contact Ms. Julie Stahl (704/336-4626) or me (704/336-3643). tfully mitted, W. Moore Specialist cc: John Dorney, NCDENR, DWQ (7copies, Certified Mail No. Z 054 082 100) Julie Stahl, CSWS Charlotte Storm Water Services 600 East Fourth Street Charlotte, North Carolina 28202-2844 Telephone(704)336-4626 FAX(704)336-6586 To report drainage problems: 336-RAIN Prmlpd rm reciclod naPPr DEM ID: CORPS ACTION ID: NATIONWIDE PERMIT REQUESTED (PROVIDE NATIONWIDE PERMIT #): ??i? x`26 PRE-CONSTRUCTION NOTIFICATION APPLICATION FOR NATIONWIDE PERMITS THAT REQUIRE: 1) NOTIFICATION TO THE CORPS OF ENGINEERS 2) APPLICATION FOR SECTION 401 CERTIFICATION 3) COORDINATION WITH THE N.C. DIVISION OF COASTAL MANAGEMENT SEND THE ORIGINAL AND (1) COPY OF THIS COMPLETED FORM TO THE APPROPRIATE FIELD OFFICE F THE CORPS OF ENGINEERS (SEE AGENCY ADDRESSES SHEET). SEVEN (7) COPIES SHOULD BE SENT TO THE N.C. DIVISION OF ENVIRONMENTAL MANAGEMENT (SEE AGENCY ADDRESSES SHEET). PLEASE PINT, OWNERS NAME: 4:f Y Qi ?•arollE ,Prrty ?E J' ? -?? rcEs MAILING ADDRESS: l0 00 .<-F mix w Sr SUBDIVISION NAME: l',Yrv?r 4?tcs CITY: ?'yr/.?.PG07TE STATE: IV.. L'. ZIP CODE: ,e, PROJECT LOCATION ADDRESS, INCLUDING SUBDIVISION NAME (IF DIFFERENT FROM MAILING ADDRESS ABOVE): /DBD,3 3. TELEPHONE NUMBER (HOME): (WORK): ,DX- ,2r? A6--$& 4. IF APPLICABLE: AGENT'S NAME OR RESPONSIBLE CORPORATE OFFICIAL, ADDRESS, PHONE NUMBER - 7oy'c-ot r6y:,,x LOCATION OF WORK (PROVIDE A MAP, PREFERABLY A COPY OF USGS TOPOGRAPHIC MAP OR AERIAL PHOTOGRAPHY WITH SCALE): COUNTY: A/fCC,ILez/e5 5! NEAREST TOWN OR CITY: xlll?.s ' ,e D.-_e- /iI?EY zwv s AW-40 .6ky - Dom' 1 3046?S SPECIFIC LOCATION (INCLUDE ROAD NUMBERS, LANDMARKS, ETC.): S 6. e%fpACTED-QRNEAREST STREAM/RIVER: RIVER BASIN: ?ATi?W?3? 7a. IS PROJECT LOCATED NEAR WATER CLASSIFIED AS TROUT, TIDAL SALTWATER (SA), HIGH QUALITY WATERS (HQW?,QUTSTANDING RESOURCE WATERS (ORW), WATER SUPPLY (WS-I OR WS-In? YES ? NO IF YES, EXPLAIN: 7b. IS THE PROJECT LOCATED WITHIN A NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT AREA OF ENVIRONMENTAL CONCERN (AEC)? YES ? NO 0--- 7c. IF THE PROJECT IS LOCATED WITHIN A COASTAL COUNTY (SEE PAGE 7 FOR LIST OF COASTAL COUNTIES), WHAT IS THE LAND USE PLAN (LUP) DESIGNATION? 8a. HAVE ANY SECTION 404 PERMITS BEEN PREVIOUSLY REQUESTED FOR USE ON THIS PROPERTY? YES ? NO 53"IF YES, PROVIDE ACTION I.D. NUMBER OF PREVIOUS PERMIT AND ANY ADDITIONAL INFORMATION (INCLUDE PHOTOCOPY OF 401 CERTIFICATION): 8b. ARE ADDITIONAL PERMIT REQUESTS EXPECTED FOR THIS PROPERTY IN THE FUTURE? YES C'NO ? IF YES, DESCRIBE ANTICIPATED WORK: e%,,v e - /J,eCr 1Y G?f?T L?c? ?c?v ?E ?itTiJ1/ll?.r/l .? , c????? ??r??.aTiod <ae S9c/ cSw,e ?i?sr. 1.%0v T ???ilei?LGEG •7F ,?ix?.S?? ?i?.U•dEZ ?i!lp.?ol??/11E-?/T?/,G OQTG'C?/`E 9a. ESTIMATED TOTAL NUMBER OF ACRES IN TRACT OF LAND: 9b. ESTIMATED TOTAL NUMBER OF ACRES OF WETLANDS LOCATED ON PROJECT SITE: O.22 i9C' 0.-? ?s?2-c?Zcs ?s?- G/S ,/.jr /.l/,r/?cy ?Z / 6?/ET«?o5 ?? 4• oZ 2 10a. NUMBER OF ACRES OF WETLANDS IMPACTED BY THE PROPOSED PROJECT BY: FILLING: EXCAVATION: Zf-"• O6 010 FLOODING: OTHER: D. Ko DRAINAGE: TOTAL ACRES TO BE IMPACTED: e52- Ile !:5?, /?iC? O e io Te77lL'a??'2f? /F T ?GlrlS7?!/CT/O.?/ ? SS . IOb. (1) STREAM CHANNEL TO BE IMPACTED BY THE PROPOSED PROJECT (IF RELOCATED, PROVIDE DISTANCE BOTH BEFORE AND AFTER RELOCATION: WIDTH BEFORE (based on normal high water contours): 11. 12. LENGTH BEFORE: 1L3-5- FT. AFTER: oz-R, 7 FT. FT. WIDTH AFTER: 6 4%y* ? ?,r d,GLSED ?''vO.t/?/EZ !? ?Si?? S FT. AVERAGE DEPTH BEFORE: FT. AFTER: ? FT. (2) STREAM CHANNEL IMPACTS, WILL RESULT FROM: (CHECK ALL THAT APPLY) OPEN CHANNEL RELOCATION: '; PLACEMENT OF PIPE IN CHANNEL: CHANNEL EXCAVATION: OTHER: IF CONSTRUCTION OF A POND IS PROPOSED, WHAT IS THE SIZE OF THE WATERSHED DRAINING TO THE POND? WHAT IS THE EXPECTED POND SURFACE AREA? DESCRIPTION OF PROPOSED WORK INCLUDING DISCUSSION OF TYPE OF MECHANICAL EQUIPMENT TO BE USED (ATTACH PLANS: 8'/2" X I V DRAWINGS ONLY): 13. PURPOSE OF PROPOSED WORK: CONSTRUCTION OF A DAWFLOODING 3 14. STATE REASONS WHY IT IS BELIEVED THAT THIS ACTIVITY MUST BE CARRIED OUT IN WETLANDS. (INCLUDE ANY MEASURES TAKEN TO MINIMIZE WETLAND IMPACTS): _ -5- F- ?Trgc ? lJGi?,?,?i9T/IBC 15. YOU ARE REQUIRED TO CONTACT THE U.S. FISH AND WILDLIFE SERVICE (USFWS) AND/OR NATIONAL MAINE FISHERIES SERVICE (NMFS) (SEE AGENCY ADDRESSES SHEET) REGARDING THE PRESENCE OF ANY FEDERALLY LISTED OR PROPOSED FOR LISTING ENDANGERED OR THREATENED SPECIES OR CRITICAL HABITAT IN THE PERMIT AREA THAT MAY BE AFFECTED BY THE PROPOSED PROJECT. DATE CONTACTED: (ATTACH RESPONSES FROM THESE AGENCIES.) 16. YOU ARE REQUIRED TO CONTACT THE STATE HISTORIC PRESERVATION OFFICER (SHPO) (SEE AGENCY ADDRESSES SHEET) REGARDING THE PRESENCE OF HISTORIC PROPERTIES IN THE PERMIT AREA WHICH MAY BE AFFECTED BY THE PROPOSED PROJECT. DATE CONTACTED: 17. DOES THE PROJECT INVOLVE AN EXPENDITURE OF PUBLIC FUNDS OR THE USE OF PUBLIC (STATE) LAND? YES &' NO ? (IF NO, GO TO 18) a. IF YES, DOES THE PROJECT REQUIRE PREPARATION OF AN ENVIRONMENTAL DOCUMENT PURSUANT TO THE REQUIREMENTS OF THE NORTH CAROLINA ENVIRONMENTAL POLICY ACT? YES ? NO W- b. IF YES, HAS THE DOCUMENT BEEN REVIEWED THROUGH THE NORTH CAROLINA DEPARTMENT OF ADMINISTRATION STATE CLEARINGHOUSE? YES ? NO? IF ANSWER TO 17b IS YES, THEN SUBMIT APPROPRIATE DOCUMENTATION FROM THE STATE CLEARINGHOUSE TO DIVISION OF ENVIRONMENTAL MANAGEMENT REGARDING COMPLIANCE WITH THE NORTH CAROLINA ENVIRONMENTAL POLICY ACT. QUESTIONS REGARDING THE STATE CLEARINGHOUSE REVIEW PROCESS SHOULD BE DIRECTED TO MS. CHRYS BAGGETT, DIRECTOR STATE CLEARINGHOUSE, NORTH CAROLINA DEPARTMENT OF ADM NISTRATION, 116 WEST JONES STREET, RALEIGH, NORTH CAROLINA 27603-8003, TELEPHONE (919) 733-6369. 4 18. THE FOLLOWING ITEMS SHOULD BE INCLUDED WITH THIS APPLICATION IF PROPOSED ACTIVITY INVOLVES THE DISCHARGE OF EXCAVATED OR FILL MATERIAL INTO WETLANDS: a. WETLAND DELINEATION MAP SHOWING ALL WETLANDS, STREAMS, LAKES AND PONDS ON THE PROPERTY (FOR NATIONWIDE PERMIT NUMBERS 14, 18, 21, 26, 29 AND 38). ALL STREAMS (INTERMITTENT AND PERMANENT) ON THE PROPERTY MUST BE SHOWN ON THE MAP. MAP SCALES SHOULD BE 1 INCH EQUALS 50 FEET OR 1 INCH EQUALS 100 FEET OR THEIR EQUIVALENT. b. IF AVAILABLE, REPRESENTATIVE PHOTOGRAPH OF WETLANDS TO BE IMPACTED BY PROJECT. C. IF DELINEATION WAS PERFORMED BY A CONSULTANT, INCLUDE ALL DATA SHEETS RELEVANT TOT HE PLACEMENT OF THE DELINEATION LINE. d. ATTACH A COPY OF THE STORM WATER MANAGEMENT PLAN IF REQUIRED. e. WHAT IS LAND USE OF SURROUNDING PROPERTY? f. IF APPLICABLE, WHAT IS PROPOSED METHOD OF SEWAGE DISPOSAL? g. SIGNED AND DATED AGENT AUTHORIZATION LETTER, IF APPLICABLE. NOTE: WETLANDS OR WATERS OF THE U.S. MAY NOT BE IMPACTED PRIOR TO: 1) ISSUANCE OF A SECTION 404 CORPS OF ENGINEERS PERMIT, 2) EITHER THE ISSUANCE OR WAIVER OF A 401 DIVISION OF ENVIRONMENTAL MANAGEMENT (WATER QUALITY) CERTIFICATION, AND 3) (IN THE TWENTY COASTAL COUNTIES ONLY), A LETTER FROM THE NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT STATING THE PROPOSED ACTIVITY IS CONSISTENT WITH THE NORTH CAROLINA COASTAL MANAGEMENT PROGRAM. 0 'S GENT'S SIGNATURE 8 B el" ' DATE (AGENT'S SIGNATURE VALID ONLY IF AUTHORIZATION LETTER FROM THE OWNER IS PROVIDED (18G.)) Photograph No. 2 Existing perennial stream (unnamed tributary to Six Mile Creek) and adjacent wetland. Photograph No. 1 Existing perennial stream (unnamed tributary to Six Mile Creek) and adjacent wetland. Photograph No. 4 Existing perennial stream (unnamed tributary to Six Mile Creek) and adjacent wetland. Photograph No. 3 Existing perennial stream (unnamed tributary to Six Mile Creek) and adjacent wetland. Narrative Chestnut Hills Storm Water Maintenance Project Item 12: Description of proposed work including discussion of type of mechanical equipment to be used (attach plans: 8'Y2"x11" drawings only): The proposed channel improvement/relocation design by NCDOT (and modified by CSWS) consists of a trapezoidal channel with a 6-foot wide bottom and 4:1 side slopes stabilized with turf matting (see Figure 3, 1 of 4). The new channel will utilize portions of the existing channel but will eliminate the existing switch-back meanders which in several areas comes into close proximity to the property owner's driveway/parking area. The gentle meanders, in place of the sharp bends, will more sufficiently convey the additional storm water run-off created by the construction of I-485. The realignment will reduce the length of channel from 335 feet to 295 feet. The course of the realigned channel will traverse the central portion of the existing wetland and will minimize impact to existing trees. Disturbance due to construction access will be minimized and will be returned to pre-existing conditions to the extent possible, upon completion of the project. Timber matting or equivalent will be used to minimize long term damage to the wetland area. A small trackhoe will be utilized to complete the project. Photographs of the existing channel, taken in May 1997, are enclosed for reference. Item 13: Purpose of proposed work: The proposed work will expedite conveyance of storm water from a proposed 48" RCP that will be constructed under Chestnut Hills Drive to supplement an existing 54" CMP at this location. This supplemental 48" RCP is necessary due to the additional storm water discharge from the recently completed phase of I-485. The additional storm water backwater from Chestnut Hills Drive threatens possible foundation and mechanical equipment damage at the Jenkins' residence (see Figure 3, 2 of 4). Item 14: State reasons why it is believed that this activity must be carried out in wetlands. (Include any measures taken to minimize wetland impacts): The proposed channel work must be carried out at this location in waters of the U.S., including wetlands, since it is through this area that storm water is conveyed and is expected to increase as a result of the recently constructed phase of I-485. Alternatives to constructing the project as planned were evaluated internally by Charlotte Storm Water staff, with the property owners, and with Mr. Steve Lund of the U.S. Army Corps of Engineers, Asheville Regional Office. The alternatives evaluation process has taken the project from a deepened, widened, straightened, and turf-reinforced matted channel to a widened, gently meandering, turf-reinforced matted and vegetated channel. The results of a no-construction alternative would be an increased water elevation through the channel, wetland area, and possibly the adjacent upland property. The project as planned is designed to offset the increased flow through this area. As described in Number 12 above, impacts to the wetland and channel will be minimized to the extent practicable. Functions of the channel and wetlands is not expected to change as a result of the proposed work. JtOCKY an 71.? --1698 II -? 1 j-' u O II, 'JI 95 ?? ?o vv if\ a ??,6 l ,A? ii vv I? 0 J . _5? MC \1\ _ @_M 00 WES - 111 - GE?? /?- T II VAvAFRO, evil _ A t`y?? ( 1 \ ff ?\ i Cady' / i A Lake ?0 1 ?. r 13/ y - o 0 J. i 700 e? /?hr 02 25 .a ?. of \ 1 Alc Big / (r? • ' - _ _ eZ) f vl ' JA- Weddin)gton r_- /zr f I ` ?< s a de- .gPP?2UfG. ?itOfiE/> 1 t ?9ciG.v/ry?x? I T ..-----r" ""---.--- 1 F%G46eE 2 N.C. DEPT. OF TRANSPORTATION RALEIGH, N.C. PROJECT: 81670102 R-02UDC MECKLENBURG CO. PROPOSED DRAINAGE OUTLET IMPROVEMENT RIGHT OF STA. 611 + 00 -L- SCALE: 1" = 10' VERTICAL FEBRUARY 1997 1" = 60' HORIZONTAL MWC R\ 6' BASE DITCH STA.3+75 TO 6+50 DDE= ± 310 C.Y. ``%%% %lllr//fj •?` ?k . Cana CL SEAL t 3648 /CK r?rlll??? v /0/2/ l97 /ate-? a_ I - N4611'S7'W '- - -- - - -_ . I? I I? z 1 I ' O Z .I w o co bbh Qp9 pA v o Q N QV CLEAN OUT / j 1g d ! • ( w I ? '_ 38.94' bRAC- v 00 I u CHL FENCE X~-` s H,y w C) ENCE 21- 4' v z RA. = 66 , i ? 54.1rM?` I ?V I r ' x 1 1 W ti X0,2 REM E FEj • I ?Ir to •?°? ?,?; ADD W I ?IIL i oz c? ??' 9y ° I I 1 IZ z ,,?^^ ?V(?A N I i I Oj lit ri I w co FSA II i I 10 ? 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