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HomeMy WebLinkAbout20081151 Ver 1_401 Application_20080708PAYME WILDLANDS PECEE' July 24, 2008 Ms. Cyndi Karoly NC DENR Division of Water Quality, Wetlands Unit 1650 Mail Service Center Raleigh, North Carolina 27699-1650 Subject: Pre-Construction Notification Pursuant to Nationwide Permit No. 27 and Water Quality Certification No. 3689 Little Sugar Creek Elizabeth to Charlottetowne- Stream Enhancement Project Charlotte, North Carolina Dear Ms. Karoly: Please find enclosed five copies of our PCN package for the subject project. We have included the following supporting data: • PCN form, • vicinity, USGS, soil, and site maps, • existing conditions and design summary, • Approved Jurisdictional Determination Form, • photo log, and • 11" x 17" copy of the 75% plan set. The goals of the project are to • stabilize the stream banks with native vegetation, • install in-stream boulder structures to improve habitat and provide grade control, • excavate a floodplain bench, and • establish a greenway adjacent to the riparian corridor. This same information has been submitted to the Asheville Regulatory Field Office of the US Army Corps of Engineers. If you have any questions, please call me at (704) 332-7754. Sincerely, Emi y G. Reinicker, PE, CFM Project Manager Enclosure cc: Ms. Crystal Taylor Mecklenburg County Storm Water Services Office Use Only: Form Version March 05 USACE Action ID No. DWQ No. krr any parucwar item is nut appucame to tnts project, please enter "loot Applicable" or "N/A".) 1. Processing 1. Check all of the approval(s) requested for this project: ® Section 404 Permit ? Riparian or Watershed Buffer Rules ? Section 10 Permit ? Isolated Wetland Permit from DWQ ® 401 Water Quality Certification ? Express 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: NWP No. 27 and Water Quality Certification No. 3689 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ? 4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII, and check here: ? 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), check here:: ? II. Applicant Information [N11 B? A \J P?) 1. Owner/Applicant Information J(JL 2 15 2008 Name: Crystal Taylor OBR -'vl+/irP Qk'; ,u v Mailing Address: Mecklenburg County Storm Water Services WETuANDSANDSTORWygE-p.8tANCH 700 North Trvon Street Charlotte NC 28202 Telephone Number: (704) 336-7342 Fax Number: (704) 336-3846 E-mail Address: CEystal.Taylor@mecklenburgcountync.gov 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Emily Reinicker PE CFM Company Affiliation: Wildlands Engineering Inc Mailing Address: 1430 South Mint Street Suite 104 Charlotte NC 28203 Telephone Number: (704) 332-7754 Fax Number: (704) 332-3306 E-mail Address: ereinicker@wildlandsinc.com Updated 11/1/2005 Page 1 of 8 III. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Little Sugar Creek - Elizabeth to Charlottetowne 2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A 3. Property Identification Number (Tax PIN): 125-095-01 and 125-093-06 4. Location County: Mecklenburg Nearest Town: Charlotte Subdivision name (include phase/lot number): N/A Directions to site (include road numbers/names, landmarks, etc.): North of the City of Charlotte: From I-77 South, take the Wilkinson Blvd/I-277 E/ John Belk Frwy/ US-74 E/ West Blvd exit 9. Merge onto I-277 N / US-74 E via exit 9B Take the Kenilworth Ave / NC-16 S / Third St./ Fourth St. exit 2-A toward Third St. Turn Left at Fourth St./ NC-16 S. Turn Right onto S McDowell St. and Right onto Elizabeth Ave This location is the upstream project limit. 5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) Decimal Degrees (6 digits minimum): 35.218121 ON 80.832387°W - Upstream Point 35.214033°N 80.836042°W - Downstream Point 6. Property size (acres): approximately 6 acres (linear project) 7. Name of nearest receiving body of water: Little Sugar Creek 8. River Basin: Catawba (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.) Updated 11/1/2005 Page 2 of 8 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application:_ The project site is located just southeast of uptown Charlotte and extends between Elizabeth Avenue and Charlottetowne Avenue Little Sugar Creek has been altered to accommodate development The project area is typically bound to the west by an existing parking lot and an Interstate 277 exit ramp and to the east by a mixed use commercial development and open lawn areas 10. Describe the overall project in detail, including the type of equipment to be used:_ Grading and planting bank slopes with native riparian species excavation of floodplain bench excavation of riffle and pool bedform features and installation of in-stream boulder structures. A trackhoe will be used for in-stream work An asphalt reenwav trail is planned on the left terrace. 1 1. Explain the purpose of the proposed work: The primary goal for the project is to reclaim the natural and beneficial functions of the floodplain and stream channel IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. N/A V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. N/A. Future plans for stream enhancement work are being developed on other sections of Little Sugar Creek, but construction document packages are being developed for these reaches under separate contracts. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. Each impact must be listed separately in the tables below (e.g., culvert installation should be listed separately from riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts, permanent and temporary, must be listed, and must be labeled and clearly identifiable on an Updated 11/1/2005 Page 3 of 8 accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) should be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Provide a written description of the proposed impacts: approximately 2,150 linear feet of bank sloue grading and planting excavation of floodplain bench and riffle/pool features and installation of in-stream structures. 2. Individually list wetland impacts. Types of impacts include, but are not limited to mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due. to tenth ,tmr.tnrP and flnnrlina Wetland Impact Site Number (indicate on map) Type of Impact Type of Wetland (e.g., forested, marsh, herbaceous, bog, etc.) Located within 100-year Flo(odplaiodplain Distance to Nearest Stream (linear feet) Area of Impact (acres) Total Wetland Impact (acres) 3. List the total acreage (estimated) of all existing wetlands on the property: N/A 4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. To calculate acreage- multinly lenoth X width then rtiv;lh- by d1 r%90 Stream Impact Number (indicate on ma) Stream Name Type of Impact Perennial or Intermittent? Average Stream Width Before Impact Impact Length (linear feet) Area of Impact (acres) Little Sugar Creek Enhancement Perennial 50' 2,150 2.47 Total Stream Impact (by length and acreage) 2,150 2.47 5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.). Open water impacts include, but are not limited to fill. excavation- dredging- flondino_ drainaoP hnllrhParle mr• Open Water Impact Name of Waterbody Type of Waterbody Area of Site Number (if applicable) Type of Impact (lake, pond, estuary, sound, bay, Impact (indicate on ma) ocean, etc.) (acres) Total Open Water Impact (acres) 1 -1 Updated 11 / 1 /2005 Page 4 of 8 6. List the cumulative impact to all Waters of the U.S. resulting from the nrniert- - ---- Stream Impact (acres) ---- --- 2.47 Wetland Impact (acres): Open Water Impact (acres): Total Impact to Waters of the U.S. (acres) 2.47 Total Stream Impact (linear feet): 2,150 7. Isolated Waters Do any isolated waters exist on the property? ? Yes ® No Describe all impacts to isolated waters, and include the type of water (wetland or stream) and the size of the proposed impact (acres or linear feet). Please note that this section only applies to waters that have specifically been determined to be isolated by the USACE. NA 8. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ? uplands ? stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): NA Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): NA Current land use in the vicinity of the pond: NA Size of watershed draining to pond: NA Expected pond surface area: NA VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The project constitutes a uositive impact enhancing stream function and habitat by improving bed features in the stream. Construction practices will follow guidelines from the NC Erosion and Sediment Control Planning and Design Manual VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. Updated 11/1/2005 Page 5 of 8 USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on January 15, 2002, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o.enr.state.nc.us/ncwetlands/strmgide.html. 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. N/A 2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at (919) 715-0476 to determine availability, and written approval from the NCEEP indicating that they are will to accept payment for the mitigation must be attached to this form. For additional information regarding the application process for the NCEEP, check the NCEEP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please check the appropriate box on page five and provide the following information: Amount of stream mitigation requested (linear feet): NA Amount of buffer mitigation requested (square feet): NA Amount of Riparian wetland mitigation requested (acres): NA Amount of Non-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA IX. Environmental Documentation (required by DWQ) 1. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land? Yes ® No ? 2. If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Updated 11/1/2005 Page 6 of 8 Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No 3. If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No ? X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. 1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No 2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. Zone* Impact (square feet) Multiplier Required Mitigation 1 3 (2 for Catawba) 2 1.5 Total .,JAV . cnLcwlua VUL w Kiel perpenuicuiar rrom the top of the near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. 3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0244, or .0260. N/A XI. Stormwater (required by DWQ) Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. If percent impervious surface exceeds 20%, please provide calculations demonstrating total proposed impervious level. Adjacent impervious coverage includes parking lots roadways sidewalks and commercial structures. The proposed stream enhancement and green way project will not cause a net increase to the impervious coverage of the area In the Elizabeth to 4th Street sub-reach a park is planned Updated 11/1/2005 Page 7 of 8 with rain garden bioretention areas to treat stormwater runoff before it enters Little Sugar Creek An existing parking lot will be demolished on this parcel thus decreasing the impervious area on this parcel. XII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. N/A XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (I 5A NCAC 2H .0500) or any Buffer Rules? Yes ? No Is this an after-the-fact permit application? Yes ? No XIV. Cumulative Impacts (required by DWQ) Will this project (based on past and reasonably anticipated future impacts) result in additional development, which could impact nearby downstream water quality? Yes ? No If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent North Carolina Division of Water Quality policy posted on our website at http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: This is a stream restoration project that will not increase development in the area XV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). 0d Oplicant/Agent's Sib*ture Bate / (Agent's signature is valid o f an authorization letter from the applicant is provided.) Updated 11/l/2005 Page 8 of 8 APPROVED JURISDICTIONAL DETERMINATION FORM U.S. Army Corps of Engineers This form should be completed by following the instructions provided in Section IV of the JD Form Instructional Guidebook. SECTION 1: BACKGROUND INFORMATION A. REPORT COMPLETION DATE FOR APPROVED JURISDICTIONAL DETERMINATION (JD): May 5, 2008 B. DISTRICT OFFICE, FILE NAME, AND NUMBER:Asheville Regional Office C. PROJECT LOCATION AND BACKGROUND INFORMATION: Little Sugar Creek -Elizabeth to Charlottetowne State:NC County/parish/borough: Mecklenburg City: Charlote Center coordinates of site (lat/long in degree decimal format): Lat. 35.2)8121'1, Long. 80.832387° . Universal Transverse Mercator: Name of nearest waterbody: Little Sugar Creek Name of nearest Traditional Navigable Water (TNW) into which the aquatic resource flows: Little Sugar Creek flows to Sugar Creek which flows to the Catawba River, a TNW Name of watershed or Hydrologic Unit Code (HUC): 03050103 Check if map/diagram of review area and/or potential jurisdictional areas is/are available upon request. Check if other sites (e.g., offsite mitigation sites, disposal sites, etc...) are associated with this action and are recorded on a different JD form. D. REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL THAT APPLY): Office (Desk) Determination. Date: Field Determination. Date(s): April 22, 2008 SECTION 11: SUMMARY OF FINDINGS A. RHA SECTION 10 DETERMINATION OF JURISDICTION. There "navigable waters of the U.S." within Rivers and Harbors Act (RHA) jurisdiction (as defined by 33 CFR part 329) in the review area. [Required] Waters subject to the ebb and flow of the tide. Waters are presently used, or have been used in the past, or may be susceptible for use to transport interstate or foreign commerce. Explain: B. CWA SECTION 404 DETERMINATION OF JURISDICTION. There "waters ofthe U.S." within Clean Water Act (CWA) jurisdiction (as defined by 33 CFR part 328) in the review area. [Required] 1. Waters of the U.S. a. Indicate presence of waters of U.S. in review area (check all that apply): t TNWs, including territorial seas Wetlands adjacent to TNWs Relatively permanent waters'` (RPWs) that flow directly or indirectly into TNWs s Non-RPWs that flow directly or indirectly into TNWs Wetlands directly abutting RPWs that flow directly or indirectly into TNWs Wetlands adjacent to but not directly abutting RPWs that flow directly or indirectly into TNWs Wetlands adjacent to non-RPWs that flow directly or indirectly into TNWs Impoundments of jurisdictional waters Isolated (interstate or intrastate) waters, including isolated wetlands b. Identify (estimate) size of waters of the U.S. in the review area: Non-wetland waters: 21501inear feet: 50width (ft) and/or 2.5 acres. Wetlands: 0.00 acres. Limits of jurisdiction based on: w "" (boundaries) I ??e'_.. , t?u Manual Elevation of established OHWM (if known): Non-regulated waters/wetlands (check if applicable):3 81 Potentially jurisdictional waters and/or wetlands were assessed within the review area and determined to be not jurisdictional. Explain: ' Boxes checked below shall be supported by completing the appropriate sections in Section III below. ' For purposes of this form, an RPW is defined as a tributary that is not a TNW and that typically flows year-round or has continuous flow at least "seasonally" (e.g., typically 3 months). Supporting documentation is presented in Section III.F. SECTION 111: CWA ANALYSIS A. TNWs AND WETLANDS ADJACENT TO TNWs The agencies will assert jurisdiction over TNWs and wetlands adjacent to TNWs. If the aquatic resource is a TNW, complete Section III.A.1 and Section III.D.I. only; if the aquatic resource is a wetland adjacent to a TNW, complete Sections III.A.1 and 2 and Section III.D.1.; otherwise, see Section HLB below. TNW Identify TNW: Summarize rationale supporting determination: Wetland adjacent to TNW Summarize rationale supporting conclusion that wetland is "adjacent": B. CHARACTERISTICS OF TRIBUTARY (THAT IS NOT A TNW) AND ITS ADJACENT WETLANDS (IF ANY): This section summarizes information regarding characteristics of the tributary and its adjacent wetlands, if any, and it helps determine whether or not the standards for jurisdiction established under Rapanos have been met. The agencies will assert jurisdiction over non-navigable tributaries of TNWs where the tributaries are "relatively permanent waters" (RPWs), i.e. tributaries that typically flow year-round or have continuous flow at least seasonally (e.g., typically 3 months). A wetland that directly abuts an RPW is also jurisdictional. If the aquatic resource is not a TNW, but has year-round (perennial) flow, skip to Section III.D.2. If the aquatic resource is a wetland directly abutting a tributary with perennial now, skip to Section IILD.4. A wetland that is adjacent to but that does not directly abut an RPW requires a significant nexus evaluation. Corps districts and EPA regions will include in the record any available information that documents the existence of a significant nexus between a relatively permanent tributary that is not perennial (and its adjacent wetlands if any) and a traditional navigable water, even though a significant nexus finding is not required as a matter of law. If the waterbody° is not an RPW, or a wetland directly abutting an RPW, a JD will require additional data to determine if the waterbody has a significant nexus with a TNW. If the tributary has adjacent wetlands, the significant nexus evaluation must consider the tributary in combination with all of its adjacent wetlands. This significant nexus evaluation that combines, for analytical purposes, the tributary and all of its adjacent wetlands is used whether the review area identified in the JD request is the tributary, or its adjacent wetlands, or both. If the JD covers a tributary with adjacent wetlands, complete Section III.B.1 for the tributary, Section III.B.2 for any onsite wetlands, and Section 111.6.3 for all wetlands adjacent to that tributary, both onsite and offsite. The determination whether a significant nexus exists is determined in Section III.C below. Characteristics of non-TNWs that flow directly or indirectly into TNW (i) General Area Conditions: Watershed size: Pick List Drainage area: Pick List Average annual rainfall: inches Average annual snowfall: inches (ii) Physical Characteristics: (a) Relationship with TNW: ? Tributary flows directly into 'TNW. ? Tributary flows through Pick List tributaries before entering TNW. Project waters are Pick List river miles from TNW Project waters are Pick List aerial (straight) miles from RPW. Identify flow route to TN W5: Tributary stream order, if known: Project waters are Pick List river miles from RPW. Project waters are Pick List aerial (straight) miles from TN W. Project waters cross or serve as state boundaries. Explain: ' Note that the Instructional Guidebook contains additional infonnation regarding swales, ditches, washes, and erosional features generally and in the acid West. Flow route can be described by identifying, e.g., tributary a, which flows through the review area, to flow into tributary b, which then flows into TNW. (b) General Tributary Characteristics (check all that apply): Tributary is: ? Natural ? Artificial (man-made). Explain: ? Manipulated (man-altered). Explain: Tributary properties with respect to top of bank (estimate): Average width: feet Average depth: feet Average side slopes: pick List. Primary tributary substrate composition (check all that apply): ? Silts ? Sands ? Cobbles ? Gravel ? Bedrock ? Vegetation. Type/% cover: ? Other. Explain: ? Concrete ? Muck Tributary condition/stability [e.g., highly eroding, sloughing banks]. Explain: Presence of run/fif31e/pool complexes. Explain: Tributary geometry: 0 Tributary gradient (approximate average slope): % (c) Flow: Tributary provides for: go" Estimate average number of flow events in review area/year: ME= Describe flow regime: Other information on duration and volume: Surface flow is: Pick List. Characteristics: Subsurface flow: 96 Explain findings: ? Dye (or other) test performed: Tributary has (check all that apply): ? Bed and banks ? OHWM6 (check all indicators that apply): ? clear, natural line impressed on the bank ? ? changes in the character of soil ? ? shelving ? ? vegetation matted down, bent, or absent ? ? leaf litter disturbed or washed away ? ? sediment deposition ? ? water staining ? ? other (list): F1 Discontinuous OHWM.' Explain: the presence of litter and debris destruction of terrestrial vegetation the presence of wrack line sediment sorting scour multiple observed or predicted flow events abrupt change in plant community If factors other than the OHWM were used to determine lateral extent of CWA jurisdiction (check all that apply): High Tide Line indicated by: Mean High Water Mark indicated by: ? oil or scum line along shore objects ? survey to available datum; ? fine shell or debris deposits (foreshore) ? physical markings; ? physical markings/characteristics ? vegetation lines/changes in vegetation types. ? tidal gauges ? other (list): (iii) Chemical Characteristics: Characterize tributary (e.g., water color is clear, discolored, oily film; water quality; general watershed characteristics, etc.). Explain: Identify specific pollutants, if known: 6A natural or man-made discontinuity in the OHWM does not necessarily sever jurisdiction (e.g., where the stream temporarily flows underground, or where the OHWM has been removed by development or agricultural practices). Where there is a break in the OH" that is unrelated to the waterbody's flow regime (e.g., flow over a rock outcrop or through a culvert), the agencies will look for indicators of flow above and below the break. 'Ibid. (iv) Biological Characteristics. Channel supports (check all that apply): ? Riparian corridor. Characteristics (type, average width): ? Wetland fringe. Characteristics: ? Habitat for: ? Federally Listed species. Explain findings: ? Fish/spawn areas. Explain findings: ? Other environmentally-sensitive species. Explain findings: ? Aquatic/wildlife diversity. Explain findings: 2. Characteristics of wetlands adjacent to non-TNW that now directly or indirectly into TNW (i) Physical Characteristics: (a) General Wetland Characteri sties: Properties: Wetland size: acres Wetland type. Explain: Wetland quality. Explain: Project wetlands cross or serve as state boundaries. Explain: (b) General Flow Relationship with Non-TNW: Flow is: Pick List. Explain: Surface flow is: Piiekl Characteristics: Subsurface flow: ISM. Explain findings: ? Dye (or other) test performed: (c) Wetland Adjacency Determination with Non-TNW ? Directly abutting ? Not directly abutting ? Discrete wetland hydrologic connection. Explain: ? Ecological connection. Explain: ? Separated by benn/barrier. Explain: (d) Proximity (Relationshi ) to TNW Project wetlands are. Pick List river miles from TNW. Project waters are Pick List aerial (straight) miles from TNW. Flow is from: ck List. Estimate approximate location of wetland as within the Pick List floodplain. (ii) Chemical Characteristics: Characterize wetland system (e.g., water color is clear, brown, oil film on surface; water quality; general watershed characteristics; etc.). Explain: Identify specific pollutants, if known: (iii) Biological Characteristics. Wetland supports (check all that apply): ? Riparian buffer. Characteristics (type, average width): ? Vegetation type/percent cover. Explain: ? Habitat for: ? Federally Listed species. Explain findings: ? Fish/spawn areas. Explain findings: ? Other environmentally-sensitive species. Explain findings: ? Aquatic/wildlife diversity. Explain findings: Characteristics of all wetlands adjacent to the tributary (if any) All wetland(s) being considered in the cumulative analysis: Pkk Lkt Approximately ( ) acres in total are being considered in the cumulative analysis. For each wetland, specify the following: Directly abuts? (YIN) Size (in acres) Directly abuts? (Y/N) Size (in acres) Summarize overall biological, chemical and physical functions being performed: C. SIGNIFICANT NEXUS DETERMINATION A significant nexus analysis will assess the flow characteristics and functions of the tributary itself and the functions performed by any wetlands adjacent to the tributary to determine if they significantly affect the chemical, physical, and biological integrity of a TNW. For each of the following situations, a significant nexus exists if the tributary, in combination with all of its adjacent wetlands, has more than a speculative or insubstantial effect on the chemical, physical and/or biological integrity of a TNW. Considerations when evaluating significant nexus include, but are not limited to the volume, duration, and frequency of the flow of water in the tributary and its proximity to a TNW, and the functions performed by the tributary and all its adjacent wetlands. It is not appropriate to determine significant nexus based solely on any specific threshold of distance (e.g. between a tributary and its adjacent wetland or between a tributary and the TNW). Similarly, the fact an adjacent wetland lies within or outside of a floodplain is not solely determinative of significant nexus. Draw connections between the features documented and the effects on the TNW, as identified in the Rapanos Guidance and discussed in the Instructional Guidebook. Factors to consider include, for example: • Does the tributary, in combination with its adjacent wetlands (if any), have the capacity to carry pollutants or flood waters to TNWs, or to reduce the amount of pollutants or flood waters reaching a TNW? • Does the tributary, in combination with its adjacent wetlands (if any), provide habitat and lifecycle support functions for fish and other species, such as feeding, nesting, spawning, or rearing young for species that are present in the TNW? • Does the tributary, in combination with its adjacent wetlands (if any), have the capacity to transfer nutrients and organic carbon that support downstream foodwebs? • Does the tributary, in combination with its adjacent wetlands (if any), have other relationships to the physical, chemical, or biological integrity of the TNW? Note: the above list of considerations is not inclusive and other functions observed or known to occur should be documented below: Significant nexus findings for non-RPW that has no adjacent wetlands and flows directly or indirectly into TNWs. Explain findings of presence or absence of significant nexus below, based on the tributary itself, then go to Section 111.13: Significant nexus findings for non-RPW and its adjacent wetlands, where the non-RPW flows directly or indirectly into TNWs. Explain findings of presence or absence of significant nexus below, based on the tributary in combination with all of its adjacent wetlands, then go to Section III. D: 3. Significant nexus findings for wetlands adjacent to an RPW but that do not directly abut the RPW. Explain findings of presence or absence of significant nexus below, based on the tributary in combination with all of its adjacent wetlands, then go to Section IILD: D. DETERMINATIONS OF JURISDICTIONAL FINDINGS. THE SUBJECT WATERS/WETLANDS ARE (CHECK ALL THAT APPLY): TNWs and Adjacent Wetlands. Check all that apply and provide size estimates in review area: TNWs: linear feet width (ft), Or, acres. Wetlands adjacent to TNWs: acres. RPWs that flow directly or indirectly into TNWs. Tributaries of TNWs where tributaries typically flow year-round are jurisdictional. Provide data and rationale indicating that tributary is perennial: Little Sugar Creek is identified by USGS as a perennial stream; this portion of the channel exhibited average ordinary high water widths of 35 to 50 feet, strong flow, strong riffle-pool sequences, and substrate consisting of fine sand to large cobbles. Tributaries of TNW where tributaries have continuous flow "seasonally" (e.g., typically three months each year) are jurisdictional. Data supporting this conclusion is provided at Section 111.6. Provide rationale indicating that tributary flows seasonally: Provide estimates for jurisdictional waters in the review area (check all that apply): Tributary waters: 2150 linear feet50width (ft). ? Other non-wetland waters: acres. Identify type(s) of waters: Non-RPWss that flow directly or indirectly into TNWs. Waterbody that is not a TNW or an RPW, but flows directly or indirectly into a TNW, and it has a significant nexus with TNW is jurisdictional. Data supporting this conclusion is provided at Section III.C. Provide estimates for jurisdictional waters within the review area (check all that apply): C] Tributary waters: linear feet width (ft). M Other non-wetland waters: acres. Identify type(s) of waters: Wetlands directly abutting an RPW that flow directly or indirectly into TNWs. Wetlands directly abut RPW and thus are jurisdictional as adjacent wetlands. E3 Wetlands directly abutting an RPW where tributaries typically flow year-round. Provide data and rationale indicating that tributary is perennial in Section III.D.2, above. Provide rationale indicating that wetland is directly abutting an RPW: Wetlands directly abutting an RPW where tributaries typically flow "seasonally." Provide data indicating that tributary is seasonal in Section 111.13 and rationale in Section III.D.2, above. Provide rationale indicating that wetland is directly abutting an RPW: Provide acreage estimates for jurisdictional wetlands in the review area: acres. Wetlands adjacent to but not directly abutting an RPW that flow directly or indirectly into TNWs. Wetlands that do not directly abut an RPW, but when considered in combination with the tributary to which they are adjacent and with similarly situated adjacent wetlands, have a significant nexus with a TNW are jurisidictional. Data supporting this conclusion is provided at Section III.C. Provide acreage estimates for jurisdictional wetlands in the review area: acres. 6. Wetlands adjacent to non-RPWs that flow directly or indirectly into TNWs. Wetlands adjacent to such waters, and have when considered in combination with the tributary to which they are adjacent and with similarly situated adjacent wetlands, have a significant nexus with a TNW are jurisdictional. Data supporting this conclusion is provided at Section III.C. Provide estimates for jurisdictional wetlands in the review area: acres. 7. Impoundments of jurisdictional waters. As a general rule, the impoundment of a jurisdictional tributary remains jurisdictional. Demonstrate that impoundment was created from "waters of the U.S.," or Demonstrate that water meets the criteria for one of the categories presented above (1-6), or Demonstrate that water is isolated with a nexus to commerce (see E below). E. ISOLATED [INTERSTATE OR INTRA-STATE] WATERS, INCLUDING ISOLATED WETLANDS, THE USE, DEGRADATION OR DESTRUCTION OF WHICH COULD AFFECT INTERSTATE COMMERCE, INCLUDING ANY SUCH WATERS (CHECK ALL THAT APPLY):" which are or could be used by interstate or foreign travelers for recreational or other purposes. El from which fish or shellfish are or could be taken and sold in interstate or foreign commerce. which are or could be used for industrial purposes by industries in interstate commerce. Interstate isolated waters. Explain: Other factors. Explain: SSee Footnote # 3. 'To complete the analysis refer to the key in Section I II.D.6 of the Instructional Guidebook. 10 Prior to asserting or declining CWA jurisdiction based solely on this category, Corps Districts will elevate the action to Corps and EPA HQ for review consistent with the process described in the Corps/EPA Memorandum Regarding CWA Act Jurisdiction Following Rapanos. Identify water body and summarize rationale supporting determination: Provide estimates for jurisdictional waters in the review area (check all that apply): Tributary waters: linear feet width (ft). Other non-wetland waters: acres. Identify type(s) of waters: Wetlands: acres. F. NON-JURISDICTIONAL WATERS, INCLUDING WETLANDS (CHECK ALL THAT APPLY): If potential wetlands were assessed within the review area, these areas did not meet the criteria in the 1987 Corps of Engineers Wetland Delineation Manual and/or appropriate Regional Supplements. Review area included isolated waters with no substantial nexus to interstate (or foreign) commerce. ? Prior to the Jan 2001 Supreme Court decision in "SWANCC," the review area would have been regulated based solely on the "Migratory Bird Rule" (MBR). Waters do not meet the "Significant Nexus" standard, where such a finding is required for jurisdiction. Explain: Other: (explain, if not covered above): Provide acreage estimates for non-jurisdictional waters in the review area, where the sole potential basis of jurisdiction is the MBR factors (i.e., presence of migratory birds, presence of endangered species, use of water for irrigated agriculture), using best professional judgment (check all that apply): Non-wetland waters (i.e., rivers, streams): linear feet width (ft). Lakes/ponds: acres. Other non-wetland waters: acres. List type of aquatic resource: Wetlands: acres. Provide acreage estimates for non jurisdictional waters in the review area that do not meet the "Significant Nexus" standard, where such a finding is required for jurisdiction (check all that apply): Non-wetland waters (i.e., rivers, streams): linear feet, width (ft). Lakes/ponds: acres. Other non-wetland waters: acres. List type of aquatic resource: Wetlands: acres. SECTION IV: DATA SOURCES. A. SUPPORTING DATA. Data reviewed for JD (check all that apply - checked items shall be included in case file and, where checked and requested, appropriately reference sources below): Maps, plans, plots or plat submitted by or on behalf of the applicant/consultant: Data sheets prepared/submitted by or on behalf of the applicant/consultant. ? Office concurs with data sheets/delineation report. ? Office does not concur with data sheets/delineation report. Data sheets prepared by the Corps: Corps navigable waters' study: U.S. Geological Survey Hydrologic Atlas: ? USGS NHD data. ? USGS 8 and 12 digit HUC maps. U.S. Geological Survey map(s). Cite scale & quad name:Charlotte East. USDA Natural Resources Conservation Service Soil Survey. Citation: Mecklenburg County. National wetlands inventory map(s). Cite name: State/Local wetland inventory map(s): FEMA/FIRM maps: 100-year Floodplain Elevation is: (National Geodectic Vertical Datum of 1929) Photographs: ® Aerial (Name & Date): Mecklenburg County, 2007. or ® Other (Name & Date):Photolog. Previous determination (s). File no. and date of response letter: E Applicable/supporting case law: Applicable/supporting scientific literature: Other information (please specify): B. ADDITIONAL COMMENTS TO SUPPORT JD: Little Sugar Creek Elizabeth Avenue to Charlottetowne Avenue Existing Conditions and Design Summary Wildlands Engineering is working with LandDesign, Mecklenburg County Storm Water Services, and Mecklenburg County Park & Recreation to develop construction documents for a stream enhancement and greenway project in Charlotte, NC, on Little Sugar Creek from Elizabeth Avenue to Charlottetowne Avenue (formerly named South Independence Boulevard). This memorandum provides a summary of the 1. watershed characteristics, 2. existing geomorphic conditions, and 3. proposed design parameters for the project reach. 1. Watershed & Land Use The project reach is located in central Mecklenburg County just southeast of uptown Charlotte as shown on the attached Vicinity Map (Figure 1). The headwaters of Little Sugar Creek drain the area east of I-77 and south of I-85, as shown on the Vicinity Map and the attached USGS Topographic Map (Figure 2). The watershed drainage area measures 10.2 square miles at the downstream end of the project reach. Downstream of the project site, Little Sugar Creek flows south through Mecklenburg County to join Sugar Creek and then into the Catawba River east of Rock Hill, SC. The project site is located in the Catawba River Basin, HUC 03050103. The Little Sugar Creek watershed is located in a highly developed urban setting; approximately 80% of the land in the watershed has been developed. Approximately 43% of the land surface is impervious. The land uses within the watershed include • residential (47%), • industrial (25%), • commercial (19%), • woods (7%), and • institutional (2%). The City of Charlotte lies in the Charlotte Belt, which is a geologic zone comprised of predominantly metavolcanic and plutonic rock types. The geology of the project area is Devonian and Ordovician age granodiorite rock. The granodiorite is medium-grained, massive to weakly foliated, and is comprised mainly of plagioclase and quartz (Goldsmith, 1984). Bedrock knick points were observed in the stream bed at the Elizabeth Avenue box culvert outlet and mid-reach between 3'd Street and Charlottetowne Avenue. As shown on the attached Soils Map (Figure 3), the soils found within the project site include urban soils, Monacan soils, and Cecil sandy clay loam soils. Urban soils describe areas where the original soils have been cut, filled, graded, or paved to the extent that a soil type can no longer be recognized. Monacan soils are deep, moderately well and somewhat poorly drained soils that formed in recent alluvial sediments of the Piedmont. Cecil soils are typically very deep and well- drained upland soils that formed in residuum from felsic rock. The surface layer of the soil is loamy and the subsoil is clayey. 2. Existing Stream Conditions Little Sugar Creek has historically been straightened and dredged in an attempt to control flooding and to accommodate development. The creek banks along this reach have been riprapped to reduce erosion. Vegetation was managed by cutting and spraying until the late 1990's. The project reach of Little Sugar Creek has been listed on the North Carolina Division of Water Quality's (NCDWQ) 303(d) list since 2000. Section 303(d) of the Clean Water Act (CWA) requires states to develop a list of waters not meeting water quality standards or which have impaired uses. The NCDWQ 303(d) list includes violations of impaired biological integrity and high fecal coliform concentrations for the creek. The project extents are shown on the attached Site Map (Figure 4). The project includes three sub- reaches: Elizabeth Avenue box culvert to 4t' Street box culvert (430 LF open channel); 40' Street box culvert to P Street box culvert adjacent to Veteran's Park (300 LF open channel); and 3'd Street box culvert to the Charlottetown Avenue (formerly S. Independence Boulevard) bridge (990 LF open channel). This reach currently classifies as a Rosgen B5 channel. The channel substrate is dominated by sandy fine sediment characteristic of an urban watershed. An abundance of riprap from prior bank stabilization work was also found in the creek bed. An absolute Rosgen stream classification of urban streams such as Little Sugar Creek is difficult due to historical channel modification and the limited ability of the channel to freely adjust to channel-forming flow. Table 1 summarizes the existing geomorphic conditions of the project reach. Overall, the channel is overwide in many locations as evidenced by mid-channel bars. These bars are located immediately upstream of the box culverts at 40' Street and 3`d Street. The bank height ratio is high throughout the project reach, ranging from 2.1 to 3.2, indicating an incised condition with a channel separated from its floodplain. The project reach consists of long flat runs, punctuated by a few steep bedrock riffles. Few deep, well-formed pools were found along the project reach. The banks are heavily riprapped and vegetated with invasive species including kudzu, understory vine species, and some maples, sycamores and oaks. Bankfull Indicators The bankfull stage indicator along the Little Sugar Creek Elizabeth to Charlottetown Reach identified in the field was a break in slope on a flat depositional feature. This indicator is consistent with other NC urban Piedmont streams. Bankfull data for the project reach was compared with the NC Piedmont regional curve. Three of the project's riffle cross-sectional areas (X3, X5, and X7) plot just above the NC piedmont rural regional curve data within the scatter of the curve data. This data location indicates that bankfull stage was adequately selected within acceptable limits. The fourth riffle cross-section, X2, plots slightly higher near the NC piedmont urban curve. The X2 riffle is located at an over-wide section with a mid-channel bar. The larger cross-sectional area and the bar indicate that this section does not adequately convey the creek's sediment load. Wildlands Engineering Page 2 LSC Elizabeth to Charlottetowne Design Summary May 23, 2008 The surveyed cross-sections overlaid with the NC regional curve are shown in the attached Figure 5. Manning's equation was used to calculate an approximate bankfull discharge using the cross- sectional area and overall channel slope for the project reach. This approximate bankfull discharge is shown overlaid with the NC regional curve in the attached Figure 5. 3. Design Parameters The Little Sugar Creek Elizabeth to Charlottetowne Reach stream enhancement project will consist of Rosgen Priority 2 and 4 enhancement. Stream pattern will not be restored due to adjacent sanitary sewer lines, overhead electric lines, and other urban infrastructure constraints. The three sub-reaches between the box culverts are not long enough to allow appropriate development of a meandering pattern. On the sub-reach from Elizabeth Avenue to 4d' Street, a stable cross-section will be constructed with an adjacent excavated bankfull bench. Much of this reach is over-wide, so existing riprap and invasives will be removed and the banks will be filled or re-constructed to develop a stable cross- section dimension. A constructed bankfull bench will be built where possible, ranging in width from 5 feet to 20 feet on one or both sides of the creek. Table 1 summarizes the design parameters for this reach. In-stream boulder structures will be used to establish bedform diversity with riffles and pools. Riparian plants native to the piedmont of NC will be planted on the banks, bench and floodplain to stabilize the stream corridor and add terrestrial habitat. Additional work adjacent to the stream includes a greenway trail and bioretention areas to treat storm water runoff on both sides of the creek. One pedestrian bridge crossing is proposed on this reach. On the sub-reach from 4d' Street to 3'd Street, in-stream boulder structures will be used to establish bedform diversity, to narrow the baseflow channel, and to protect the stream banks. Widespread grading of the channel and banks is not planned. A bankfull bench has begun to form on the left bank; this area will be left intact to the extent possible. Invasive species on both banks will be managed by cutting and spraying, and supplemental planting of native species is proposed. Additional work adjacent to the left bank of the stream includes a greenway trail. On the sub-reach from 3`d Street to Charlottetowne Avenue, stream treatments will be similar to the 4d' to 3'd Street sub-reach. In-stream boulder structures will be used to establish bedform diversity, to narrow the baseflow channel, and to protect the stream banks. Widespread grading of the channel and banks is not planned. A bankfull bench has begun to form on the left bank; this area will be left intact to the extent possible. Invasive species on both banks will be managed by cutting and spraying, and supplemental planting of native species is proposed. Additional work adjacent to the left bank of the stream includes a greenway trail. Wildlands Engineering Page 3 LSC Elizabeth to Charlottetowne Design Summary May 23, 2008 Interstate 85 Watershed Area 10.2 Sq. Mi. Interstate 277 Interstate 77 NC 74 Legend Pro Figure 1. Vicinity Map Wildlands Engineering, Inc. Project Reach Little Sugar Creek 1430 South Mint Street #104 Watershed Area Elizabeth to Charlottetowne I' Charlotte, NC 28203 ------ Streets 704-33 2-7754 0 3,000 6,000 12,000 - J Feet Mecklenburg County, NC ` k f'" ? ? ? ' ? UJ. f • r l ?; „? ?^ ?•? ; vim 1. Eth 1 + # ' A, c ?. J' iuoot A , ti - ? ?t +' o ,ate ? ??. tk. 9e6 ? ,. , ? ?? NI Q bras ? ? ? r ? ? r ? y 01 Legend Figure 2. USGS Topographic Map Wildlands Engineering, Inc. Project Reach Little Sugar Creek 1430 South Mint Street#104 Streams Elizabeth to Charlottetowne Charlotte, NC 28203 704-332-7754 0 1,000 2,000 4,000 - Feet Mecklenburg County, NC O \ ID M 1 ., ;\ Soils j day\,*w cB 100 CeB2, Cecil sandy clay loam =' a CuB, Cecil-Urban land complex e%66 0? get MS, Monacan soils and Arents Ur, Urban land s?,, w, Water 4-4 $ ' f _ l • ??,\ T- a ?s - . f •? qi ? tit "? ?p_' 41 e e = ' > for, /"} ?e l E3: Si. If zP 4.._ eB2 -IN " eel a_ ; `?' _ _ o7?-fir` : • - t a nr - - w N IS f c '? ? ? S 3 i 4 ? ? kk`` ? ?5:.?"? ?} rte'. ?4? ?•. -? ? Y Nis M S? f i? Legend Figure 3. Soils Map ' Wildlands Engineering, Inc. - Project Reach Little Sugar Creek I 1430 South Mint Street #104 Charlotte, NC 28203 Streams Elizabeth to Charlottetowne 7043 3 2-7 754 0 250 500 7,000 Feet Mecklenburg County, NC � ,' , Approximate • � Construction Corridor Veteran's Park Qq r u /rx 9 YY tt rT 4 r �+- Legend J, Project Reach Wildlands Engineering, Inc. 1430 South Mint Street x'104 Streams charlotte, NC 28203 Parcels 704-33 2-7754 0 100 200 400 600 —' Feet Central Piedmont ' Community College Figure 4. Site Map Little Sugar Creek Elizabeth to Charlottetowne Mecklenburg County, NC Table 1 Geomorphic Characteristics of Little Sugar Creek (Charlottetowne to Elizabeth) Existing Conditions, Design Parameters and Proposed Conditions Little Sugar Creek Greenway - Charlotte, NC Existing Conditions Design Range Pro osed Conditions Notation Units minimum maximum averse minimum maximum minimum maximum stream type B5 B5 B5 drainage area DA sq mi 9.9 10.2 10.1 9.9 10.2 9.9 10.2 bankfull discharge Qw,, cfs 604 1344 1010 800 900 800 900 Cross-Section Features bankfull cross-sectional area Awd SF 157.6 256.7 193.5 160.0 185.0 165.5 average velocity during bankfull event vwd fps 4.5 5.2 5.0 4.0 5.0 4.8 5.4 width at bankfull wwe feet 39.0 59.3 47.6 40.0 50.0 42.0 maximum depth at bankfull dmax feet 4.4 6.2 5.3 5.00 5.50 5.5 mean depth at bankfull db, feet 3.8 4.3 4.0 3.00 4.20 3.9 bankfull width to depth ratio wbWdwd 9.7 13.7 11.7 10.0 14.0 10.7 depth ratio dm.% dw„ 1.2 1.4 1.3 1.2 1.5 1.4 bank height ratio BHR 2.1 3.2 2.6 1.0 1.1 1.0 1.1 floodprone area width wipe feet 58.0 95.0 74.6 60 84 64 84 entrenchment ratio ER 1.2 1.9 1.6 1.4 2.0+ 1.5 2.0+ Sinuosity Eliz to 4th Reach valley slope S'a" feet/ foot 0.0028 0.0028 0.0016 channel slope Scha,,,,B feet/ foot 0.0027 0.0027 0.0016 sinuosity K 1.04 1.04 1.00 Riffle Features riffle slope Sense feet/ foot 0.004 0.050 0.018 0.0049 0.0081 0.0033 0.0041 riff le slope ratio Sem?Sa 1.48 18.52 6.67 1.8 3.0 2.0 2.5 Pool Features pool slope Spew feet/ foot 0.0001 0.0007 0.0003 0.0000 0.0005 0.0000 0.0000 pool slope ratio SPOOI/SwInr l 0.04 0.26 0.11 0.00 0.20 0.00 0.00 pool-to-pool spacing LP.P feet 116 318 200 80 250 117 143 pool spacing ratio Lp.p/wde 2.4 6.7 4.2 2.0 5.0 2.8 3.4 maximum pool depth at bankfull dpew feet 6.8 7.2 7.0 3.60 10.50 6.0 8.0 pool depth ratio dpew/dm 1.7 1.8 1.7 1.2 2.5 1.5 2.0 pool width at bankfull wPW feet 46.0 58.5 52.3 44.0 75.0 46.0 pool width ratio wpo/wde 1.0 2 1.1 1.1 1.5 1.1 pool cross-sectional area at bankfull A" SF 236.1 .3 L 264.7 192.0 277.5 236.0 pool area ratio Awe/Apow 1.2 5 l 1.4 1 .2 2.0 1.4 Pattern Features belt width ww, feet HS' HS' HS' N/A N/A N/A N/A meander width ratio wwdwwe HS' HS' HS' N/A N/A N/A N/A meander length Lm feet HS' HS' HS' N/A N/A N/A N/A meander length ratio L./WW HS' HS' HS' N/A N/A N/A N/A radius of curvature Rc feet HS' HS' HS' N/A N/A N/A N/A radius of curvature ratio Rd wwe HS' HS' HS' N/A N/A N/A N/A Sediment Particle Size Distribution from Reach-Wide Pebble Count dw, material for Rosgen classification coarse sand Notes HS: Channel has been historically straightened, moved, and/or maintained to prevent pattern formation. N/A: Pattern will not be restored for this project. 1. Proposed conditions will be implemented on the reach from Elizabeth Avenue to 4th Street only, where channel cross-section enhancement will take place. For the reaches from 4th Street to 3rd Street and 3rd Street to Charlottetowne Avenue, profile enhancement will take place. In-stream structures and riparian buffer planting will take place with no alteration to dimension due to urban constraints on both banks. Q:\ActiveProjects\005-13055 LSC Eliz to Charlottetowne\Design\ConstructionDocs\30%\channel_design.xls, design template 5/15/2008 a a s Y . * s ? M AL + ? a n a r' T # " T s ? . d?'13+ O?'ev ^'X? ?' € ae 3t?s X ?t ?', _+'F.a _ _ tea, ?-. - 2 l'l?our? t,,?>kitid downstream to Fourth Street bridge. Photo 5- Riffle cross-section, looking downstream to Charlottetowne Avenue. Wildlands Engineering LSC Elizabeth to Charlottetowne Photolog Page 1 May 5, 2008 L U W d d d LL ? m f7 N O T ? W M W ya L LL UI Y m L _d M X C N M tO 0 (MO c 00 0 (NO (ND N (99 OAJN `108)) UO(1ene13 t U W d lY d d N LL L ? a n w N W L a ? LL W Y N m W I d N X d 7 LL _a `IT1?3m3 I I I I 1 I 1 I 1 1 I f 1 I I I 1 I I ! 0 a M 0 °o M 0 m N f W ? y N ov N O N O N O ? O O O ? ? ? ? m (99 OAUN `1801) uopenel3 t U d cc Q1 3 d Q d C O LL N ? ? m O m A d L Q U LL O Y ao d d y L 0 m I t m ° ? LL Q' M IjTx3m3, II I ?I N ° m i O O 1 1 m I I 1 II it _? m I I I c N O I i y I N it I I o m N 00 N _N Q x 0 N °O N O OJ O ? N O ¢? O V N N V C m m M m m N N N N (99 OADN '1881) uog8n813 L U m cc d d 1n N T D M O N d d Q ? LL ? Y (D L ` a 0 a x 0 m m 0 <D m 0 a m 0 N m O O y M .rte O ? N 0 N 0 N O N N O O O O 0 O N O In O N ID m N v a M M N N m ID ID O O O ID 'ow (88 OADN '1881) uol4en813 0 L U W p Q N 7 C d Q d C 3 LL o cn o? W L Q U LL O Y « m v cn Pf d m x x r U d cc if d 7 C Q ID C O Zn N pMp?? ? N d A ? L Q U LL p Y m O O a co x 0 a m O Cl) O O d m N O 0 10 N O N O O O N O w 0 C N O m w O N N V V M (`] CJ (7 (7 N N N N O O O O O O O O O O O (BB OA'JN 'I-;) UOI;BAal3 l d U C U 1 ? LL p x I 1 I I I I I I I I 1 1 f 3 I I ? 0 m 3 0 m M O 0 m 0 N Q W N N VO 0 N O N O W (O V N O Kl tD O N O N V V ('J M M ('J (7 N N N N N c0 (D t0 (D t0 f0 t0 c0 t0 t0 (O t0 (Be OAJN '1G8;) Uo1;BAal3 ?,a STAT[ o Michael F. Easley, Governor Lisbeth C. Evans, Secretary Jeffrey J. Crow, Deputy Secretary June 2, 2008 North Carolina Department of Cultural Resources State Historic Preservation Office Peter B. Sandbeck, Administrator Office of Archives and History Division of Historical Resources David Brook, Director Matt Jenkins Wildlands Engineering, Inc. 1430 South Mint Street Suite 104 Charlotte, NC 28203 Re: Little Sugar Creek Stream Restoration, Mecklenburg County, ER 08-1154 Dear Mr. Jenkins: Thank you for your letter of May 6, 2008, concerning the above project. We have conducted a review of the project and are aware of no historic resources which would be affected by the project. Therefore, we have no comment on the project as proposed. The above comments are made pursuant to Section 106 of the National Historic Preservation Act and the Advisory Council on Historic Preservation's Regulations for Compliance with Section 106 codified at 36 CFR Part 800. Thank you for your cooperation and consideration. If you have questions concerning the above comment, please contact Renee Gledhill-Earley, environmental review coordinator, at 919-807-6579. In all future communication concerning this project, please cite the above-referenced tracking number. Sincerely, JCS a-&4t Teter Sandbeck Location: 109 East Jones Street, Raleigh NC 27601 Mailing Address: 4617 Mail Service Center, Raleigh NC 27699-4617 Telephone/Fax: (919) 807-6570/807-6599 North Carolina Michael F. Easley, Govemor Mr. Matt L. Jenkins Wildlands Engineering, Inc. 1430 South Mint Street, Suite 104 Charlotte, NC 28203 May 13, 2008 Natural Resources William G. Ross Jr., Secretary Subject: Little Sugar Creek - Elizabeth Avenue to Charlottetown Avenue - Stream Enhancement Project; Charlotte, Mecklenburg County Dear Mr. Jenkins: The Natural Heritage Program has no record of rare species, significant natural communities, significant natural heritage areas, or conservation/managed areas at the site nor within a mile of the project area. Although our maps do not show records of such natural heritage elements in the project area, it does not necessarily mean that they are not present. It may simply mean that the area has not been surveyed. The use of Natural Heritage Program data should not be substituted for actual field surveys, particularly if the project area contains suitable habitat for rare species, significant natural communities, or priority natural areas. You may wish to check the Natural Heritage Program database website at www.ncnhp.org for a listing of rare plants and animals and significant natural communities in the county and on the quad map. Our Program also has a new website that allows users to obtain information on element occurrences and significant natural heritage areas within two miles of a given location: <http://nhpweb.enr.state.nc.us/nhis/public/gmap75-main.phtml>. The user name is "public" and the password is "heritage". You may want to click "Help" for more information. NC OneMap now provides digital Natural Heritage data online for free. This service provides site specific information on GIS layers with Natural Heritage Program rare species occurrences and Significant Natural Heritage Areas. The NC OneMap website provides Element Occurrence (EO) ID numbers (instead of species name), and the data user is then encouraged to contact the Natural Heritage Program for detailed information. This service allows the user to quickly and efficiently get site specific NHP data without visiting the NHP workroom or waiting for the Information Request to be answered by NHP staff. For more information about data formats and access, visit <w??'?v.nconemap.com>, then click on "FTP Data Download", and then "nheo.zip" [to the right of "Natural Heritage Element Occurrences"]. You may also e-mail NC OneMap at <dataot7a ncmail.net> for more information. Please do not hesitate to contact me at 919-715-8697 if you have questions or need further information. Sincerely, Harry E. LeGrand, Jr., Zoologist Natural Heritage Program 1601 Mail Service Center, Raleigh, North Carolina 27699-1601 e Phone: 919-733-49841 FAX: 919-715-30601 Internet: www.enr.state.nc.us/ENR/ No Carolina An Equal Opportunity I Affirmative Action Employer . 50 % Recycled 110 % Post Consumer Paper atuili4 AA74*,1?)V _WE NCDENR Department of Environment and we=a SE[Ott[ MEIEIOL A M(Ltf('1al zozez J(1'?W^VJ >==as,?,:d?ua( L? ?iL 1 ..- TOR. ??? -? S Q v= m= AISM 133HS a3n07 OIl'ddL1J3i! °NV Ni1Hd 1.1Nf10J 921h9N3lJIJ3W H139VZ113 013NMO131101'dVHD Jl`dMN33bJ )133ND 2 vEmS 31 H 11 0' 1 vl(m? -n nJOyu J AN': t? .oa 7 "° iiaiecni oc, L I t- f L L I r- w ?- od ?_ Qw ?O Z ? wCL LLJ ?. CLIO C7 z U.J W W ?V U Z 13?Q = Q C7 Z LU D J LU J 2- T V 7 I I I I ? I? w I ! i Q qi a a ?? U :oOO al ? I i ? ? i Z b Z - CJ? ?,S`??`SOv c i ?c?(SS ccr?glg 9 ???I- ?ti I lia U a s Ia a s S tt?? O a ql A S S S if N a S ?'a O'O O ? ffi 5i n. c J .4 0 o b+ t v v ' v v v O v e? 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