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Home My WebLink About20201842 Ver 1_Cleveland Bluffs Stream Restoration Plan V1 with attachments_20210112 Cleveland Bluff’s Stream Restoration Plan Requested By: KG Plaza, LLC Mr. Jack Carlisle & Mr. Fields Carlisle 8620 River Road Wilmington, NC 28412 Prepared By: Southern Environmental Group, Inc. 5315 South College Road, Suite E Wilmington, NC 28412 910.452.2711 Date: December 23, 2020 Cleveland Bluff’s Stream Restoration Plan SEGi 2 I. Introduction KG Plaza LLC seeks to restore 456 linear feet of an unnamed tributary to Middle Creek in the Neuse River Watershed, in Johnston County, North Carolina. The unnamed tributary (UT 1) was piped as part of ongoing development activities. This Restoration Plan has been composed to address the North Carolina Division of Water Resources (NCDWR) concerns outlined in their Notice of Violation dated June 24, 2019. This document will summarize the history of UT 1, pre- and post-disturbance site conditions, and the proposed Restoration Plan. II. Location The site is located within the Cleveland Bluffs subdivision, located south of the intersection of Cornwallis Road and Cleveland Road, near Garner, NC (see Attachment 1 – Vicinity Map). UT 1 is located along the west side of the clubhouse and north of an existing pond. It is in the Neuse River Basin, and the Upper Neuse subbasin. The 8-digit HUC is 03020201. This site is not located within a Neuse River Basin Targeted Local Watershed. The USGS Edmondson quad was utilized for this document (see Attachment 2 – USGS Topo Map). III. Watershed Data The general watershed area of Middle Creek is comprised of single-family subdivisions and agricultural land. According to the USGS tool StreamStats, UT 1 has a drainage area of 20 acres (0.0313 sq. mi.) (see Attachment 3 – Drainage Area Map). The watershed consists of a portion of the Cleveland Elementary School, Cornwallis Road, some wooded areas, rural pasture, and meadow. IV. Existing Site Conditions A. Pre-development Conditions Historically, the entire area of the subdivision was agricultural land. UT 1 was likely channelized to maintain good farm drainage pre-1950. Cleveland Elementary, constructed in approximately 2004, lies to the northeast of UT 1. It appears that most of the stormwater generated from impervious surfaces on this property is collected via stormwater inlets and piped directly into the channelized feature upstream of UT 1. Most recently, UT 1 was part of a residential parcel, that contained a single mobile home. There was a cultivated field along the west side of UT 1 up until 2015, and a smaller cultivated field on the east side of UT 1, north of the mobile home until 2015. A soil road provided access from Cornwallis Road, which had a culverted crossing over the unnamed tributary. There was also a culverted crossing downstream, at the point that UT 1 enters the existing pond. UT 1 was a relatively straight channel, with, at best, intermittent flow, based on in-person observations. The feature did not have any benching or steep banks and was regularly mowed by the landowner. The lower third of this channel had been possibly excavated and impounded sometime after 2006, based on Google Earth imagery (see Attachment 4 – 2014 Google Earth Aerial). On April 24, 2015, Johnston County made a sitewide Neuse River Buffer Determination. UT 1 (Feature B on Buffer Call) was determined to be “not subject” to the Johnson County Neuse River Buffer Ordinance. (see Attachment 5 – Neuse River Buffer Call). No N.C. Stream Assessment Method (NCSAM) forms were completed before UT 1 was piped. However, based on available historical aerial imagery, extensive experience, and observations of similar drain-ways, it is likely that UT 1 would score as a low-quality stream in both ratings classes (USACE and NCDWR). Based on these ratings, UT 1 seemed to only serve as a low functioning conduit for upstream stormwater to quickly move through the channel and enter the existing pond. This rapid movement through the system would have provided little uplift or value to downstream water quality. Cleveland Bluff’s Stream Restoration Plan SEGi 3 B. Current Conditions The upstream off-site reach of UT 1 could be classified as a channelized headwater stream. The culvert at the upstream end of UT 1 was moved as part of installation of an asphalt pedestrian walking trail to serve the subdivisions residents. UT 1 was then piped down to an existing pond. The site was then graded and stabilized with grasses and is mowed and maintained as green space. C. Soils According to the Soil Survey of Johnston County, UT 1 is mapped as Cowarts loamy sand, 2 to 6 percent slopes. This well drained soil was formed on ridges on marine terraces and is comprised of loamy and sandy marine deposits. D. Existing Plant Communities The site is currently regularly mowed and maintained as green space for the subdivision. E. Threatened and Endangered Species According to N.C. Natural Heritage Program, there are no element occurrences within UT 1. V. Restoration Plan To restore UT 1 to its previous condition, the existing pipe will be removed, and the channel restored in its original footprint ( see Attachment 6 –Post-Development Impacts to Stream and Wetlands and Proposed Mitigation, Restoration of Channel). The lower third of UT 1 was a pond pre-impact but will be restored to a continues channel down to the culvert under the amenities access road which flows to the exiting pond resulting in approximately 456’ of stream channel. The basic stream design includes a 3’ channel bottom, slightly larger than the average width of the original bottom which will reduce the velocity and allow longer water retention within the stream bed. The channel bottom will be on a 1.43% grade or slope, similar to the original channel. The banks of the channel are designed to be on a 3:1 slope. The stream banks will be lined with coir matting anchored in place and overseeded. Based on velocity calculations, seeding the coir matted banks with Class C or D vegetation will meet 2-year and 10-year events. The site will be stabilized with the appropriate wetland seed mix and a variety of non-wetland seed higher on the banks and adjacent to the channel. Additionally, the headwater of this tributary is comprised of mature tree and shrub species, which will also provide a seed source for volunteer site appropriate species over time. Please see Attachment 6 for stream design drawings and Channel Analysis Worksheet. The construction sequence would include removal of the pipe and stabilizing the channel in one event. During this time, sediment and erosion control measures will be utilized to prevent sediment discharge into downstream waters. While we would hope this can be accomplished in 2 weeks, it will be weather dependent and may take longer in adverse conditions. To start the restoration, process the restoration plan does require the approval of NC DWR and the USACE. This restoration plan will be included in a Nationwide Permit request scheduled to be submitted between January 3, 2021 and January 12, 2021. We anticipate working with the agencies following that submittal to finalize any comments and requested modifications to the design as quickly as possible and hope to receive approval in January or February of 2021. Once we have received approval to begin the restoration process, work will begin as soon as possibly but with some consideration of the growing season and germination requirements of the approved seed mix. We would Cleveland Bluff’s Stream Restoration Plan SEGi 4 propose an approximate start date of March 15th and approximate completion by April 15th. We do realize that we have 120 days from the approval date to complete the restoration process and will adjust our timeline accordingly to meet the agreed upon deadline. VI. Monitoring Plan The monitoring plan for the site will follow the guidance outlined in the U.S. Army Corps of Engineers – Wilmington District Public Notice: Notification of Issuance of Guidance for Compensatory Stream and Wetland Mitigation Conducted for Wilmington District (October 24, 2016). Monitoring data collected on the site will include photos, plant survival analyses, and channel stability analyses. Monitoring will take place for a period of 5 years, unless the NCDWR and USACE agrees the site has met the success criteria and monitoring can be stopped. Early completion of monitoring will only be provided through written approval from the NCDWR and USACE. Annual monitoring reports will be submitted to these agencies no later than November 30 of each monitoring year. A. Stream Monitoring Stream monitoring and reports will include monitoring of the vegetative, hydrologic, and geomorphic functions of the restored channel. Channel stability will be assessed yearly, to track performance of the restoration work. Visual inspection to assess hydrologic regime will be conducted at each monitoring event, to include assessment of channel establishment and migration, overbank events, and ordinary high-water indicators. Vegetation will be monitored for health and vigor, to include documentation of the need for additional plantings as necessary to maintain channel stability. Visual monitoring will be conducted by traversing the entire mitigation site to identify and document areas of poor plant vigor, areas dominated by undesirable volunteer species, prolonged inundation, native and exotic invasive species, or other areas of concern. B. Success Criteria Succuss criteria for UT 1 will be accomplished after the following parameters are met. 1. Bank stabilization – 80% of the stream bank is observed to be stable, with no signs of ongoing erosion (bank rilling or head cutting). 2. Vegetation – The site will be assessed for overall percentage of vegetation coverage, with the total length of buffer breaks (areas lacking vegetation >10 feet wide) at less than 25% of total length of UT 1. Cleveland Bluff’s Stream Restoration Plan SEGi 5 Attachment 1 Location Map 0302020109 4Vicinity Map Cleveland Bluffs Stream Restoration Clayton, Johnston Co., N.C. 12/18/2020 019-115.01 Stream Restoration Project Area HUC - Middle Creek Map Source: ESRI Street Maps 1 inch = 1 miles 0 0.25 0.5 0.75 10.125 Miles Cleveland Bluff’s Stream Restoration Plan SEGi 6 Attachment 2 USGS Topo Map 4USGS Topo Map Cleveland Bluffs Stream Restoration Clayton, Johnston Co., N.C. 12/18/2020 019-115.01 Stream Restoration Project Area Map Source: USGS TopoView Service, 2016 Edmondson panel, 7.5' quad, 1:24k scale 1 inch = 800 feet 0 400 800 1,200 1,600200 Feet Cleveland Bluff’s Stream Restoration Plan SEGi 7 Attachment 3 Drainage Area Map CLEVELAND RD CORNW ALLIS RDWE L D O N D R CHARTER OAK DR4Drainage Area Map Cleveland Bluffs Stream Restoration Garner, Johnston Co., N.C. 12/18/2020 019-115.01 Stream Restoration Project Area StreamStats Watershed Area HUC - Middle Creek Map Source: 2019 NCOneMaps Orthoimagery, USGS StreamStats Service 1 inch = 0 miles 0 0.03 0.06 0.09 0.120.015 Miles Cleveland Bluff’s Stream Restoration Plan SEGi 8 Attachment 4 2014 Google Earth Aerial Cleveland Bluff’s Stream Restoration Plan SEGi 9 Attachment 5 Neuse River Buffer Call 6"""" W"11/4 DEPARTMENT OF PUBLIC UTILITIES POST OFFICE BOX 2263 SMITHFIELD, N.C. 27577 (919) 989-5075 May 19, 2015 Donnie Adams, PE DC Adams Engineering, Inc. 335 Athletic Club Blvd. Clayton, NC 27527 Subject: Neuse River Buffer Call NBR# NB 15-005 Project Name: Cleveland Bluffs PUD (NC PIN# 163600-54-5620) Location / Directions: Cornwallis Road, Garner, NC, approximately 0.30 miles south of the intersection of Cornwallis Rd and Cleveland Rd. Parcel is located on east side of Cornwallis Rd. Subject Stream: UT to Middle Creek (C,NSW) Determination Date: April, 24, 2015 Staff: Carlos Bagley, PE Feature Stream Type E I ( / /P) Not Subject- Subject Start @ Stop @ Soil Survey USGS. ` Topo Latitude (Dec. De ees Longitude (Dec. De reel A Pond ® ❑ Pond ub ect t Al I 0 ® Below Pond B E ® ❑ ® ❑ C P ❑ ® ® ❑ D P ❑ E Pond ® ❑ ❑ F Pond ❑ G P ❑ H Pond N1 n n N1 EIIIP = EphemeralIIntermittent/Perennial Printed on recycled paper Co Explanation: The feature(s) listed above that are checked "Subject" to the Johnston County Neuse Riparian Buffer Ordinance (Section 14-393 Johnston County Code of Ordinances) has or have been approximately shown on either the Soil Survey of Johnston County, North Carolina (1994) or the most recent version of the 1:24,000 (7.5 minute) quadrangle topographic maps prepared by the United States Geologic Survey (USGS), and have been located on the property and possess characteristics that qualify it to be a stream. Each feature that is checked "Not Subject" has been determined not to be a strearn or is not present on the property. There may be other streams located on your property that do not show up on the maps referenced above but still may be considered jurisdictional according to the US Army Corps of Engineers and/or the North Carolina Division of Water Resources. This on -site determination shall expire five (5) years from the date of this letter. Landowners or affected parties that dispute a determination made by Johnston County may request a determination by the Director of the Division of Water Resources c/o the 401 and Buffer Permitting Unit, or its successor. An appeal request must be made within sixty (60) days of the date of this letter or from the date the affected party (including downstream and/or adjacent owners) is notified of this letter. A request for a determination by the Director must be submitted in writing with a copy of this letter to: North Carolina Division of Water Resources 401 & Buffer Permitting Unit 1650 Mail Service Center Raleigh, North Carolina 27699-1650 This determination is final and binding unless, as detailed above, a request for an appeal has been made in writing within sixty (60) days. The owner/future owners should notify the Division of Water Resources (including any Local, State, and Federal Agencies) of this decision concerning any future correspondences regarding the subject property (stated above). This project may require a Section 404/401 Permit for the proposed activity. Any inquiries should be directed to the US Army Corps of Engineers Raleigh Regulatory Field Office at (919) 554-4884 and the Division of Water Resources 401 & Buffer Permitting Unit at (919) 791-4200. If you have any questions regarding this determination, please feel free to contact Carlos Bagley at (919) 209-8333 or via email at carlos.bagleyEDjohnstonnc.com. Sincerely, Carlos Bagley, PE Enviromnental Manager Riparian Buffer / Stream Determination Property Info: Soil Survey of Johnston County Sandra S. Allen9638 Cleveland Road -- North Carolina Clayton, NC 27520 . USDA Soil Conservation Service PIN# 163600-54-5620 Johnston County Public Utilities 1994 Thomas Franklin Allen, Jr. 309 E. Market Street 2426 Cornwallis Road P.O. Box 2263 Garner, NC 27529 Smithfield, NC 27577 PIN# 16300-63-2285 Riparian Buffer / Stream Determination Fh. FEATURE A - Not s.A Subject FEATURE E (UPPER POND) - Not Subject FEATURE G - Subject FEATURE D - Subject CHANEY DR ' -�f f FEATURE F (LOWER / POND) - Subject FEATURE H -Not rr 25� Subject ALLE R RIDGE Ly Johnston County Public Utilities 309 E. Market Street P.O. Box 2263 Smithfield, NC 27577 Property Info: USGS Topographical Map Sandra S. Allen 9638 Cleveland Road Edmondson Quad Clayton, NC 27520 7.5-Minute Series PIN# 163600-54-5620 2013 Thomas Franklin Allen, Jr. 2426 Cornwallis Road Garner, NC 27529 PIN# 16300-63-2285 Cleveland Bluff’s Stream Restoration Plan SEGi 10 Attachment 6 Post-Development Impacts to Stream and Wetlands and Proposed Mitigation Restoration of Channel JURISDI TIONAL STREAM EX. CROSSING(NOT SUBJECT TO � / BUFFER RULES 1 1 SI TE J ` 24 PIPE' APPROX. L OCA TION OF UNDERGROUND JUNCTION BOX SI TE 2A PIPE OUTFALL JJ (NO I MPA C TS) %xx- C�YELLOW PINE LANE T- r-- »15 HDPE P E I II I I PRE—DEV. I I CLEVLAN D BLUFFS PH AS 1 --r------ - - - - - 1-7 - - - - - - LT- - - - - -L-, - - - I -- I ----__ I I I I I � - -I-r- I I I \ I I I I I I I 11 I „ \ I I I I I I 15 RCP O / I I I 11 \ SWALE / PIPE OUTFALL 3.2 — — IROQUIS COURT / PIPE OUTFALL 3.3 SI TE 4 I I \ / AREA = 1.94 AC / EX. SITE 1 A GROVE � p0, OVERALL PROPERTY BOUNDARY\� POST -DEVELOPMENT IMPACTS STREAM IMPACTS WETLAND IMPACTS SITE DESCRIPTION (FEET) (AC) (SF) 16 DRIVEWAY CROSSING/PARKING 38 -- -- 2A,213 SIDEWALK/TRAIL -- -- -- 3 STORMWATER PIPING 490 -- -- 4 ROADWAY CROSSING 54 0.025 1,098 5 ISANITARYSEWERCROSSING - 0.000 9 UTILITY ESMT. I i-I I I SITE 5�'I -----J J------------L---- I I I \ J- \ / / —J---------- OVERALL PROPERTY BOUNDARY SPRING CREEK ESTATES APPROX. PRE -DEVELOPMENT WETLAND AREA S TREA M I MPA C TS WE TL A ND I MPA C TS FFS — FUTURE PHASE 1 �.�OVERALL PROPERTY BOUNDARY _ (s) CO.S4D ENGINEERING LICENSE # C-2710 ENGINEERING LAND PLANNING COMMERCIAL / RESIDENTIAL P.O. SOX 1250 WENDELL, NC 27591 (910) 791- 4441 E 0\8 E €5W Lo� � � E bj5p �aa Q 0 m Q w 0 z w DA TE: 1212112020 HORZ. SCALE. 1 " = 50' DRA WN B Y- JO CHECKED BY.• DS PROJECT NO.: 18-0454 Sheet PD-3. D Sheet No. 3 OF 9 PLAN NOT RELEASEDFOR CONSTRUCTION Page 1 of 2 Date:12/22/2020 Computed: JFO Checked: HSR CSD Engineering 3 N. Main Street Suite D Project:Cleveland Bluffs Subdivsion (JC# 19-096-P)Wendell, NC 27591 919.624-0997 Q………………Discharge (cfs) A……………Flow Area (sf) Zreq………… (Q x n)/(1.49 x Slope^0.5) P……………Wetted Perimeter (ft) B………………Base Width (ft) R………… Hydraulic Radius (ft) Y………………Normal Depth (ft) V……………Velocity (fps) M1……………Left Side Slope Zav……… A*R^2/3 M2……………Right Side Slope T……………Shear Stress (psf) 62.4 x Y x Slope n………………Manning's Roughness Coefficient (Reference 1; Table 3, Charts 5 thru 9) Tp……………Permissable Shear Stress (Reference 1; Table 2) Reference 1: FHWA Hydraulic Engineering Circular No. 15, Publication No. FHWA-IP-87-7, 1988 Station: 0' TO 440' Description:Channel Mitigation Q =29.3 cfs 2-Year Channel Slope =0.0143 ft/ft n = 0.069 Class C Vegetation with coir matting Zreq = 11.4 ft B Y M1 M2 A PRV Zav T Tp Remarks 3.0 1.5 3.0 3.0 11.3 12.5 0.90 2.4 10.5 1.34 4.00 Stable Q = 29.3 cfs Slope = 0.0143 ft/ft n = 0.053 Class D Vegetation with coir matting Zreq = 8.7 ft B Y M1 M2 A PRV Zav T Tp Remarks 3.0 1.50 3.0 3.0 11.3 12.5 0.90 3.1 10.5 1.34 4.00 Stable Station: 0' TO 440' Description:Channel Mitigation Q =56.4 cfs 10-Year Channel Slope =0.0143 ft/ft n = 0.060 Class C Vegetation with coir matting Zreq = 18.9 ft B Y M1 M2 A PRV Zav T Tp Remarks 3.0 2.0 3.0 3.0 18.0 15.6 1.15 3.3 19.8 1.78 4.00 Stable Q = 56.40 cfs Slope = 0.0143 ft/ft n = 0.066 Class D Vegetation with coir matting Zreq = 20.9 ft B Y M1 M2 A PRV Zav T Tp Remarks 3.0 1.0 3.0 3.0 5.6 9.0 0.62 2.0 4.0 0.85 4.00 Stable CHANNEL ANALYSIS WORKSHEET Page 2 of 2 Date:12/22/2020 Computed: JFO Checked: HSR CSD Engineering 3 N. Main Street Suite D Project:Cleveland Bluffs Subdivsion (JC# 19-096-P)Wendell, NC 27591 919.624-0997 Q………………Discharge (cfs) A……………Flow Area (sf) Zreq………… (Q x n)/(1.49 x Slope^0.5) P……………Wetted Perimeter (ft) B………………Base Width (ft) R………… Hydraulic Radius (ft) Y………………Normal Depth (ft) V……………Velocity (fps) M1……………Left Side Slope Zav……… A*R^2/3 M2……………Right Side Slope T……………Shear Stress (psf) 62.4 x Y x Slope n………………Manning's Roughness Coefficient (Reference 1; Table 3, Charts 5 thru 9) Tp……………Permissable Shear Stress (Reference 1; Table 2) Reference 1: FHWA Hydraulic Engineering Circular No. 15, Publication No. FHWA-IP-87-7, 1988 CHANNEL ANALYSIS WORKSHEET Station: 0' TO 440' Description:Channel Mitigation Q =103.7 cfs 100-Year Channel Slope =0.0143 ft/ft n = 0.055 Class C Vegetation with temporary matting Zreq = 31.8 ft B Y M1 M2 A PRV Zav T Tp Remarks 3.0 2.5 3.0 3.0 25.4 18.5 1.37 4.0 31.3 2.19 4.00 Stable Q = 103.70 cfs Slope = 0.0143 ft/ft n = 0.045 Class D Vegetation with temporary matting Zreq = 26.5 ft B Y M1 M2 A PRV Zav T Tp Remarks 3.0 2.3 3.0 3.0 22.4 17.4 1.29 4.6 26.6 2.03 4.00 Stable