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HomeMy WebLinkAbout20051354 Ver 1_Complete File_20050719O?O? \ NA T ?9PG co Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources September 29, 2005 Ms. Tracy Morris Ecosystem Enhancement Program 1652 Mail Service Center Raleigh, NC 27699-1652 Alan W. Klimek, P.E. Director Division of Water Quality DWQ Project # 20051354 Perquimans County Subject Property: Watts Property Stream and Wetland Restoration PRoject Approval of 401 Water Quality Certification with Additional Conditions Dear Ms. Morris: You have our approval, in accordance with the attached conditions and those listed below, to place fill within or otherwise impact 2,200 linear feet of ditches for the purpose of restoring wetlands at the Watts property near Norma Drive and Little River Shore Road in the Town of Hertford, as described within your application dated July 19, 2005 and modified on August 31, 2005. After reviewing your application, we have decided that the impacts are covered by General Water Quality Certification Number(s) 3495 (GC3495). The Certification(s) allows you to use Nationwide Permit(s) 27 when issued by the US Army Corps of Engineers (USAGE). In addition, you should obtain or otherwise comply with any other required federal, state or local permits before you go ahead with your project including (but not limited to) Erosion and Sediment Control, Non-discharge regulations. Also, this approval to proceed with your proposed impacts or to conduct impacts to waters as depicted in your application shall expire upon expiration of the 404 or CAMA Permit. This approval is 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 except as provided in Condition Number 6 below. If the property is sold, the new owner must be given a copy of this Certification and approval letter and is thereby responsible for complying with all conditions. If total fills for this project (now or in the future) exceed one acre of wetland or 150 linear feet of stream, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h). This approval requires you to follow the conditions listed in the attached certification and any additional conditions listed below. The Additional Conditions of the Certification are: 1. Impacts Approved The following impacts are hereby approved as long as all of the other specific and general conditions of this Certification (or Isolated Wetland Permit) are met. No other impacts are approved including incidental impacts: Amount Approved Units Plan Location or Reference Ditches 2,200 (feet) Site plan 401 OversightlExpress Review Permits Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919.733.1786 / FAX 919-733-6893 / Internet: htto://h2o.enr.state.nc.us/ncwetlands r hCaro N ina Na&rallly An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper Tracy Morris: Page 2 of 3 September 29, 2005 2. Erosion & Sediment Control Practices Erosion and sediment control practices must be in full compliance with all specifications governing the proper design, installation and operation and maintenance of such Best Management Practices in order to protect surface waters standards: a. The erosion and sediment control measures for the project must be designed, installed, operated, and maintained in accordance with the most recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual. b. The design, installation, operation, and maintenance of the sediment and erosion control measures must be such that they equal, or exceed, the requirements specified in the most recent version of the North Carolina Sediment and Erosion Control Manual. The devices shall be maintained on all construction sites, borrow sites, and waste pile (spoil) projects, including contractor-owned or leased borrow pits associated with the project. c. For borrow pit sites, the erosion and sediment control measures must be designed, installed, operated, and maintained in accordance with the most recent version of the North Carolina Surface Mining Manual. d. The reclamation measures and implementation must comply with the reclamation in accordance with the requirements of the Sedimentation Pollution Control Act. 3. No Waste, Spoil, Solids, or Fill of Any Kind No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the footprint of the impacts depicted in the Pre-Construction Notification. All construction activities, including the design, installation, operation, and maintenance of sediment and erosion control Best Management Practices, shall be performed so that no violations of state water quality standards, statutes, or rules occur. 4. No Sediment & Erosion Control Measures w/n Wetlands or Waters Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum extent practicable. If placement of sediment and erosion control devices in wetlands and waters is unavoidable, they shall be removed and the natural grade restored within six months of the date that the Division of Land Resources has released the project. 5. Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return the attached certificate of completion to the 401 Oversight/Express Review Permitting Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. 6. Based on our site visit of September 27, 2005, it is very unlikely that DWQ will approve stream mitigation credits for work done on this site since based on our site visit, the site probably will not support a stream channel due to the size, slope and geology of the local watershed. However, riparian and non-riparian wetland mitigation credits will be provided by this project. If EEP modifies the site plan to omit the construction of a sinuous stream channel, then additional written notification to DWQ is not required. Tracy Morris: Page 3 of 3 September 29, 2005 Violations of any condition herein set forth may result in revocation of this Certification and may result in criminal and/or civil penalties. The authorization to proceed with your proposed impacts or to conduct impacts to waters as depicted in your application and as authorized by this Certification shall expire upon expiration of the 404 or CAMA Permit. If you do not accept any of the conditions of this Certification (associated with the approved wetland or stream impacts), 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, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. 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 in the Central Office in Raleigh at 919- 733-1786 or Kyle Barnes in the DWQ Washington Regional Office at 252-946-6481. Sincerely, AWK/jrd Enclosures: GC 3495 Certificate of Completion Iimek, P.E. cc: Pat Smith, Soil and Environmental Consultants Dave Lekson, USACE Washington Regulatory Field Office Kyle Barnes, DWQ Washington Regional Office File Copy Central Files Filename: 20051354 Watts(Perquimans)401 rA;j 'Ecosystem AUG 3 1 2005 DENR - WATER QUALITY WETLANDS AND STORMWATER BRANCH PROGRAM August 31, 2005 DWQ Project # 05-1354 Perquimans County Mr. John Dorney 401 Oversight/Express Review Permitting Unit 2321 Crabtree Blvd., Suite 250 Raleigh, NC 27604 Subject Project: Watts Property Stream and Wetland Restoration Project ADDITIONAL INFORMATION REQUEST RESPONSE Dear Mr. Dorney, On August 15, 2005, the Ecosystem Enhancement Program (EEP) received your request for additional information regarding the Watts Property Stream and Wetland Restoration Project (Watts Property). We hope that the information included here will complete our application and allow for continued review of our project by the Division of Water Quality (DWQ). We have noted the three week response window and are complying by responding by Monday, September 5, 2005 to you and Kyle Barnes of the DWQ Washington Regional Office. Please consider this response assurance that we do intend to pursue this project and do not wish to withdraw the permit application. Response to additional information requested: 1. The proposed stream mitigation plan will likely need to be redesigned. The amount of'sinuocity planned for the site seems excessive especially considering the planned sinuocity (1.52) is much higher than the reference site (1.3). With this large amount of sinuocity, we have concerns that the channel will become stagnant rather than function like a flowing stream as designed. In order to respond in a timely manner, we requested a justification for the current design from the project designer, Soil and Environmental Consultants, PA (S&EC). Please see the attached justification for the proposed design. LTXWA Wtor ... E ... PYDtP,Gt, Ol•G!' Stag IBC -E R " forth Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.nrcFr, Ecosystem r4l;J PROGRAM 2. We believe that a site visit with Corps and DWQ staff will likely be needed to address this issue and the basic issue of whether the site originally had a natural stream channel. Recent experience with DWQ and Corps staff is that stream restoration on small first order catchments in the coastal plain can be problematic and require site visits since many of these sites may never have had streams in the past. If that is the case, then this site would not be a good candidate for stream restoration. In the project manual, it is noted that an on-site meeting was conducted with Mr. David Lekson of the U.S. Army Corps of Engineers, Washington District Office on December 18, 2003 to "evaluate site soils and discuss general restoration alternatives for the Watts Property project." Unfortunately, the EEP failed to schedule an on site meeting with the DWQ prior to submitting the 401 permit application. A meeting has been scheduled for September 27, 2005 with DWQ and Mr. Lekson. 3. Please provide a complete, tabular summary of the stream mitigation and reference reach data following the format of Appendix B of the NC Stream Restoration Guidelines. This table must be provided (and usually is provided) with every stream mitigation project in the state to allow efficient review of stream mitigation proposals. Pursuant to guidelines followed by the EEP in the US Army Corps of Engineers Stream Mitigation Guidelines (April 2003), Appendix E in the submitted plan includes a complete summary of existing, proposed and reference reach data for dimension, pattern and profile and are enclosed with this correspondence for your convenience. Please let us know if there is specific relevant data that you feel is missing from this table. If you have any further questions, please feel free to contact me at (919) 715-1658 or tracy.morris a,ncmail.net. Sincerely, Tracy Morris Project Manager NC Ecosystem Enhancement Program cc: Marc Recktenwald, EEP Eastern Implementation Supervisor Kyle Barnes, DWQ Washington Regional Office David Lekson, USACE Washington Regional Office Project file encl: Watts Property sinuosity discussion Rosgen classification chart Appendix E, Watts Stream and Wetland Restoration Plan WtOY- J... L ... Prot" oar Stag MEW Borth Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.nceep.net 8099.D1 Sinuosity Discussion August 30, 2005 Watts Property Stream and Wetland Restoration Project Sinuosity Discussion Channels in North Carolina are routinely classified utilizing the stream classification system devised by Dave Rosgen (Rosgen 1996). This classification scheme utilizes several parameters based on field collected data and site observation, which collectively determines the stream type. Criteria utilized to determine stream type include slope, width/depth ratio, entrenchment ratio, sinuosity, and bed materials. As seen in the attached table (Rosgen classification chart), the characteristic of sinuosity (Stream Length/Valley Length or Valley Slope/Channel Slope) varies considerably from stream type to stream type, as well as within a given stream type. The typical range of sinuosity for an E-type stream is greater than a value of 1.5. Two examples of such streams are Sal's Branch (Wake County) and Mill Creek (Wake County) both E-type streams with sinuosities of approximately 2.0 and 1.8 respectively. E-type streams can also have a sinuosity of less than 1.5 as is the case of an unnamed tributary of Middle Creek (Wake County) which has a sinuosity of approximately 1.24. All of these streams are considered stable and were suitable reference sites, and are all classified as E-type streams, yet had varying sinuosity values. When performing a reference reach survey, typically it is desired that a length of approximately 20 to 30 bankfull widths be surveyed. From this length of surveyed stream, a sinuosity is calculated. The channel utilized as a reference reach for this project was selected for a variety of reasons including proximity to the site (and its watershed), similar topographic position, adjacent riparian wetland setting, substrate material, and valley slope. The reference reach survey resulted in an estimated sinuosity of 1.3. It is important to note that channel sinuosity can be calculated at various points along a given channel and provide considerably varied results depending upon where, and over what length, the sinuosity is calculated. The proposed sinuosity for the restored channel at the Watts Property is 1.5. The slope of the existing stream on the Watts property is approximately 0.0022 ft./ft. A slope this steep would not be expected at this position of the watershed in this region (this slope is typical of the valley slope for streams in this area, and is approximately the valley slope for this site since the existing stream is essentially straight). For the drainage area of 0.16 mil to the Watt's property stream, the Coastal Regional Curve ( SRI, 2003) yields an expected water surface slope of 0.0014 ft./ft. The mean riffle depth at bankfull from the curve at this drainage area is approximately 0.75ft. Sinuosities of the reaches used to develop the Coastal regional curve varied from 1.1 - 1.4. Typical sand/silt particle distribution values (for an active riffle and bar sample) were input into the Andrews sediment competency equations. The results showed that in order to have a design depth that was within the range given by the regional curve, the design slope must be less than 0.0015 ft./ft. In order to meet this slope, the sinuosity must be at least 1.46. This design slope is also within the range of slopes given by the regional curve for the Watt's property. This correlation is evidence that a sinuosity of 1.5 is an appropriate value for this reach. The final design used a bankfull depth of 0.69 ft., bankfull slope of 0.00 13, and a sinuosity of 1.5. There is no requirement that a given channel perfectly match all of the "expectant" values associated with slope, width/depth ratio, entrenchment ratio, or sinuosity. In fact a channel can easily be outside of the "expectant" range for one or more given criteria associated with say a C- type stream, yet would invariably be classified by all observers as a C-type stream. Similarly there is no requirement that a channel be designed in exact concert with all characteristics of a given reference reach or channel type. Rather, the reference reach is needed to provide dimensionless ratios that will then be applied to known or chosen values on the impaired stream Pagel of2 8099.D1 Sinuosity Discussion August 30, 2005 in order to develop proposed conditions. Sinuosity is not considered a dimensionless value that is applied to the drainage area of the impaired reach nor is it exactly replicated in the proposed reach. The overall drop in the channel and the slope needed for sediment competency based on the stable dimensions of the stream are used in concert with the pattern developed from the dimensionless ratios of the reference reach to develop a proposed pattern. This process will result in a proposed alignment that will tie into the upstream and downstream elevations and will not degrade or aggrade over time. The sinuosity that results from this process is then the design sinuosity. Soil & Environmental Consultants, PA 11010 Raven Ridge Rd. Raleigh, NC 27614 Page 2 of 2 Rosgen.jpg (JPEG Image, 960020 pixels) imap://traci.morris@cros.ncmail.net:143/fetch%3EUID%... Ar ss? - A ? B C D _ ; DA E F G F - _ f `? .... . A l k .. }? n a......................... .r, avh"?:.t '?74K'w?,:'h"7j 2' , .......... l . ; ? s ? ? .• 'l7 ' Y?:?? ? ? •d"• ?i v a 7 ?F •h^ ?i..?.?? r •- ?I A G s.`!M ? • ?"???"i??? '? . 1 ? .t?,. ? 4 rte! .??? ?' r ': , " 1 ?- ` t , A ?C t w, ? V III ' ,7?`... ,,;,•,,,./S. ? '>?> : `?%; h..... • . ? ?ti ? ..........4 ; 7 ,?'.? t t i 'lit ;.',7l ?? •'.{7I'. C•? ?; ?.?t?. , . ? ....... f ?'?r. ' { •?1}C.('? r'S •• ??.? '?. j JJ(?1}II7?,? ' ` t• ;,.',? L ?'{lll?ffft__? ?.1,?•., l ?.'•,;f Js• : .afh . r J ........ .... . Entr dvW < 1.4 1.4.2.2 > 2.2 NO - > 4.0 ( > 2.2 < 1.4 < 1.4 - WO Ratio < 12 > 12 > 12 > 40 vadabta i < 12 > 12 < 12 Sww * 1-1.2 > 1.2 1.2 NO > 1.6 > 1.2 > 1.2 Sops .04-.099 .02-.039 <.02 < .04 < .006 < .02 ! <.02 .02••039 FIGURE 19. Primory delineolive dlerio for the major stream types. 1 of 1 8/31/2005 1:43 PM Watts Farm Restoration S&EC Project No. 8099.1) 1 Appendix E April 25, 2005 Values EXISTING E6 P ROPOSED C6 REFE RENCE REACH E6 Variable Min Avg Max Min Avg Max Min Av Max Flood prone Width ft 8.63 19.75 28.15 26.7 27.48 28.2 42.99 43.55 44.11 Riffle Area S ft 4.16 4.24 4.31 4.02 4.23 4.49 8.06 8.12 8.18 Max Riffle Depth ft 1.36 1.59 1.73 2.71 2.94 3.17 2.71 2.94 3.17 Mean Riffle Depth ft 0.79 0.96 1.04 .57 0.58 0.6 0.94 0.96 0.97 Riffle Width ft 4.08 4.47 5.35 7.06 7.29 7.48 8.4 8.48 8.56 Pool Area S ft 5.1 6.0 7.2 13.95 13.95 13.95 13.95 13.95 13.95 Max Pool Depth ft 1.54 1.66 1.76 3.06 3.2 3.58 3.06 3.2 3.58 Mean Pool Depth ft 1.04 1.12 1.13 0.98 0.98 0.98 0.98 0.98 0.98 Pool Width ft 4.89 5.34 6.42 14.28 14.28 14.28 14.28 14.28 14.28 Dimensi onless Rat ios Variable Min Avg Max Min Avg Max Min Avg Max Wfpa / Wbkf 1.93 4.41834 6.29754 3.78 3.76 3.77 5.07 5.13561 5.20165 Pool Area / Abkf 1.23 1.42 1.67 1.71798 1.71798 1.71798 1.71798 1.71798 1.71798 Max Pool Depth / Dbkf 1.60417 1.72917 1.83333 3.1875 3.33333 3.72917 3.1875 3.33333 3.72917 Mean Pool Depth / Dbkf 1.09 1.17 1.32 11.97 12.52 13 1.02083 1.02083 1.02083 Pool Width/ Wbkf 1.19 1.19 1.20 1.68396 1.68396 1.68396 1.68396 1.68396 1.68396 Table 1: Existing, Reference and Proposed Stream Morphological Characteristics Page 1 of 3 Watts Farm Restoration S&EC Project No. 8099.1) 1 Appendix E April 25, 2005 Radius of Curvature (ft) 40 45 50 13.32 15.59 18.9 3.46 17.12 43.84 Belt Width ft 40 50 60 22.48 34.35 43.24 78.76 78.76 78.76 Dimensi onless Rat ios Variable Min Avg Max Min Avg Max Min Avg Max Lm / W bkf 111.8568 134.2282 156.5996 8.44177 8.9443 9.44937 4.10495 12.23349 28.40566 Rc / W bkf 8.94855 10.06711 11.18568 1.68608 1.97342 2.39241 0.40802 2.01887 5.16981 Wblt / Wbkf MWR 8.94855 11.18568 13.42282 2.84557 4.3481 5.47342 9.28774 9.28774 9.28774 Values EXISTING PROPOSED REFERENCE REACH Variable Min Av Max Min Av Max Min Avg Max S riffle ft/ft 0.0016 0.00217 0.00272 0.0001 0.0014 0.00364 0.0001 0.0014 0.00364 S pool ft/ft 0 0.00014 0.00043 0 0.00047 0.00127 0 0.00047 0.00127 P - P ft 0 64.51 332.07 36.23 49.98 73.21 36.23 49.98 73.21 P length ft 0 67.13 332.07 8.22 29.94 53.41 8.22 29.94 53.41 Dmax riffle ft 1.36 1.59 1.73 2.71 2.94 3.17 2.71 2.94 3.17 Dmax pool ft 1.54 1.66 1.76 3.06 3.2 3.58 3.06 3.2 3.58 Dimesionless Ratios Variable S riffle / S bkf ftfft Min 0.73733 Avg 1 Max 1.25346 Min 0.08571 Avg 1 Max 2.6 Min 0.08571 Avg 1 Max 2.6 S of / S bkf fttft P - P / W bkf ft 0 0 0.06452 14.43177 0.19816 74.28859 0 4.27241 0.33571 5.89387 0.90714 8.63325 0 4.27241 0.33571 5.89387 0.90714 8.63325 P length / W bkf ft Dmax riffle / D bkf ft Dmax pool / D bkf ft Bankfull Slope (ft/ft) 0 15.0179 74.28859 1.41667 1.65625 1.80208 1.60417 1.72917 1.83333 0.00217 0.96934 3.53066 6.29835 2.82292 10625 3.30208 3.1875 3.33333 3.72917 0.0014 0.96934 3.53066 6.29835 2.82292 3.0625 3.30208 3.1875 3.33333 3.72917 0.0014 Table 1: Existing, Reference and Proposed Stream Morphological Characteristics Page 2 of 3 Watts Farm Restoration S&EC Project No. 8099.13 1 Appendix E April 25, 2005 EXISTING PROPOSED REFERENCE REACH Variable Min Avg Max Min Avg Max Min Avg Max Discharge cfs 5.03 5.03 10.4 Velocity (fps) 1.18 1.18 1.25 H yd Radius ft 0.7 0.75 0.78 .51 .5 .49 0.81 0.81 0.83 Bkf Shear Ib/ s ft 0.1 .1 0.11 .046 .045 .045 0.07 0.05 0.1 Table 1: Existing, Reference and Proposed Stream Morphological Characteristics Page 3 of 3 r "Nw- -;j os stem -1 1 C-11t I I-A 'V K:0110 PROGRAM Watts Property Stream and Wetland Restoration Lcation: Per4uimans County; Pasquotank River Basin 03010205; adjacent to the Little River on Norma Dr. Drainage ea: 0.16 sq mi, 102 acres Site Areaf48 acres Si Soils: Roanoke silt loam 4. Fine, mixed, semiactive, thermic Typic Endoaquults Dogue fine sand loam Clayey, mixed, thermic Aquic Hapludults Site Ownership: purchased in fee simple by the EEP in August 2004 Permitting Submitted for 401/404: July 15, 2005 Design Firm: Soil and Environmental Consultants, PA Raleigh, NC Channel Morphology: see attached Proposed Restoration Totals: 1,523 if of stream restoration; 4 ac of riverine wetlands; 40 ac of nonriverine wetlands NCDEHR forth Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.n(.eep.net 8099.D1 Sinuosity Discussion August 30, 2005 Watts Property Stream and Wetland Restoration Project Sinuosity Discussion Channels in North Carolina are routinely classified utilizing the stream classification system devised by Dave Rosgen (Rosgen 1996). This classification scheme utilizes several parameters based on field collected data and site observation, which collectively determines the stream type. Criteria utilized to determine stream type include slope, width/depth ratio, entrenchment ratio, sinuosity, and bed materials. As seen in the attached table (Rosgen classification chart), the characteristic of sinuosity (Stream Length/Valley Length or Valley Slope/Channel Slope) varies considerably from stream type to stream type, as well as within a given stream type. The typical range of sinuosity for an E-type stream is greater than a value of 1.5. Two examples of such streams are Sal's Branch (Wake County) and Mill Creek (Wake County) both E-type streams with sinuosities of approximately 2.0 and 1.8 respectively. E-type streams can also have a sinuosity of less than 1.5 as is the case of an unnamed tributary of Middle Creek (Wake County) which has a sinuosity of approximately 1.24. All of these streams are considered stable and were suitable reference sites, and are all classified as E-type streams, yet had varying sinuosity values. When performing a reference reach survey, typically it is desired that a length of approximately 20 to 30 bankfull widths be surveyed. From this length of surveyed stream, a sinuosity is calculated. The channel utilized as a reference reach for this project was selected for a variety of reasons including proximity to the site (and its watershed), similar topographic position, adjacent riparian wetland setting, substrate material, and valley slope. The reference reach survey resulted in an estimated sinuosity of 1.3. It is important to note that channel sinuosity can be calculated at various points along a given channel and provide considerably varied results depending upon where, and over what length, the sinuosity is calculated. The proposed sinuosity for the restored channel at the Watts Property is 1.5. The slope of the existing stream on the Watts property is approximately 0.0022 ft./ft. A slope this steep would not be expected at this position of the watershed in this region (this slope is typical of the valley slope for streams in this area, and is approximately the valley slope for this site since the existing stream is essentially straight). For the drainage area of 0.16 mil to the Watt's property stream, the Coastal Regional Curve ( SRI, 2003) yields an expected water surface slope of 0.0014 ft./ft. The mean riffle depth at bankfull from the curve at this drainage area is approximately 0.75ft. Sinuosities of the reaches used to develop the Coastal regional curve varied from 1.1 - 1.4. Typical sand/silt particle distribution values (for an active riffle and bar sample) were input into the Andrews sediment competency equations. The results showed that in order to have a design depth that was within the range given by the regional curve, the design slope must be less than 0.0015 ft./ft. In order to meet this slope, the sinuosity must be at least 1.46. This design slope is also within the range of slopes given by the regional curve for the Watt's property. This correlation is evidence that a sinuosity of 1.5 is an appropriate value for this reach. The final design used a bankfull depth of 0.69 ft., bankfull slope of 0.0013, and a sinuosity of 1.5. There is no requirement that a given channel perfectly match all of the "expectant" values associated with slope, width/depth ratio, entrenchment ratio, or sinuosity. In fact a channel can easily be outside of the "expectant" range for one or more given criteria associated with say a C- type stream, yet would invariably be classified by all observers as a C-type stream. Similarly there is no requirement that a channel be designed in exact concert with all characteristics of a given reference reach or channel type. Rather, the reference reach is needed to provide dimensionless ratios that will then be applied to known or chosen values on the impaired stream Page 1 of 2 8099.D1 Sinuosity Discussion August 30, 2005 in order to develop proposed conditions. Sinuosity is not considered a dimensionless value that is applied to the drainage area of the impaired reach nor is it exactly replicated in the proposed reach. The overall drop in the channel and the slope needed for sediment competency based on the stable dimensions of the stream are used in concert with the pattern developed from the dimensionless ratios of the reference reach to develop a proposed pattern. This process will result in a proposed alignment that will tie into the upstream and downstream elevations and will not degrade or aggrade over time. The sinuosity that results from this process is then the design sinuosity. Soil & Environmental Consultants, PA 11010 Raven Ridge Rd. Raleigh, NC 27614 Page 2 of 2 Appendix E April 25, 2005 77 Watts Farm Restoration S&EC Project No. 8099.D1 -; _ 77, DIMENSION SUMMARY Alj?j Values REFERENCE REACH (E6) Max PROPOSED C6) Max Av 44.11 EXISTING E6) Av Max Min 28.2 42.99 qv 27.48 8 ?f I 8.12 3.17 Min 28.15 26.7 4.49 - }- 2.94 - --- - Variable 19.75 4.02 423 2_? - 0.97 8.63 4.31 2.94 3.17 0.96 Flood rone W S idth it it .16 4.24 2 71 0.6 - 8.56 1.59 1.73 0 58 B. 8.48 Riffle Area 1.36 0.96 1.04 •57 7.48 . ' - 13.95 7.06 7.29 13 -,5 13.95 Max Riffle De th it 0.79 5.35 13.95 3.2 3.58 Mean Riffle De th it 4.08 4.47 -11-2 13.95 13.95 3 )6 0.98 6.0 3.2 3.58 ; .98 0.98 Riffle Width it 5.1, 3.06 0.98 14.28 1.66 1.7 6 ?? 98 14.28 Pool Area S ft) 1.54 1,13 o .98 1.28 1 ?'.28 Max Pool De th it 1.04 1.12 14.28 14.28 Mean Pool Depth it 4.89 5.34 6.42 Pool Width it Av Max Dimensionless Ratios Max Min _ 5.20165 Min Avg 5 07 5.13561 Max 3.76 3.77 1.71798 1.71798 Av 3.78 1.71798 3.72917 Min 6 .29754 1.71798 1 71798 5 3 33333 _ 1.02083 Variable 1.93 4.41834 1.67 1.71798 - . Wf a I Wbkf 1.42 3.33333 3.72817 1.0208 1.Uc:ud3 1.68396 Pool Area I Abkf 1.23 1.72917 1.83333 13.11 .97 875 12.52 13 1.683q. 1 P9196 1.60417 1.32 1.683 Max 96 1.68396 Pool De th I Dbkf 117 09 1 1 68396 1.19 .20 Mean Pool De th 1 Dbkf 1 1.19 Pool Width I Wbkf PATTERN SUMMARY Values REFEFNCE REACH Av Max PROPOSED Max Min - Av - -1.Z7 EXISTING 7 03.74 240.88 M6x Min 1.52 4.65 34 .81 Min ATI Variable _ 1.1 700 66.69 70.66 s;nuosit Soo 600 or bolo ical Characteristics l '3 Meander Wavelen th ft osed Stream M Reference and PC Page 1 of 3 Table l : Existin Watts Farm Restoration S&EC Project No. 8099.D1 Appendix E April 25, 2005 Radius of Curvature ft 40 45 50 13.32 15.59 18.9 3.46 17.12 43.84 Belt Width ft 40 50 60 22.48 34.35 43.24 78.76 78.76 78.76 Dimensionless Rat ios Variable Min Avg Max Min Avg Max Min Avg Max Lm / W bkf 111.8568 134.2282 156.5996 8.44177 8.9443 9.44937 4.10495 12.23349 28.40566 Rc / W bkf 8.94855 10.06711 11.18568 1.68608 1.97342 2.39241 0.40802 2.01887 5.16981 Wbit / Wbkf MWR 8.94855 11.18568 13.42282 2.84557 4.3481 5.47342 9.28774 9.28774 9.28774 "* z aye, c : >.. -a : - u -lit PROF(t-_`SUNtMARY } Values EXISTING PROPOSED REFERENCE REACH Variable Min Avg Max Min Avg Max Min Av Max S riffle (ft/ft) 0.0016 0.00217 0.00272 0.0001 0.0014 0.00364 0.0001 0.0014 0.00364 S pool ft/ft 0 0.00014 0.00043 0 0.00047 0.00127 0 0.00047 0.00127 P - P ft 0 64.51 332.07 36.23 49.98 73.2' 36.23 49.98 73.21 P length ft 0 67.13 332.07 8.22 29.94 53.41 8.22 29.94 53.41 Dmax riffle ft 1.36 1.59 1.73 2.71 2.94 317 2.71 2.94 3.17 Dmax pool ft 1.54 1.66 1.76 106 3.2 3.58 3.06 3.2 3.58 Dimesionless Ratios Variable Min Avg Max Min Avg Max Min Av Max S riffle / S bkf ft/ft 0.73733 1 1.25346 0.08571 1 2.6 0.08571 1 2.6 S pool / S bkf ft/ft 0 0.06452 0.19816 0 0.33571 0.90714 0 0.33571 0.90714 P - P / W bkf ft 0 14.43177 74.28859 427241 5.89387 8.63325 4.27241 5.89387 8.63325 P length / W bkf ft 0 15.0179 74.28859 0.96934 3.53066 6.29835 0.96934 3.53066 6.29835 Dmax riffle / D bkf ft 1.41667 1.65625 1.80208 2.82292 3.0625 3.30208 2.82292 3.0625 3.30208 Dmax pool / D bkf ft 1.60417 1.72917 1.83333 3.1875 3 33333 3.729 !7 3.1875 3.33333 3.72917 Bankfull Slope ft/ft 0.00217 0-0014 0.0014 Table 1: Existing, Reference and Proposed Stream Morpholop-ical Characteristics - Page 2of3 -.9111001, Watts Farm Restoration S&EC Project No. 8099.D1 Appendix E April 25, 2005 "HYDRAULIC SUMMARY _ Variable Discharge cfs Velocity (fps) EXISTING Min Avg Max 5.03 1.18 PROPOSED Min Avg Max 5.03 1.18 REFERENCE REACH Min Av Max 10.4 1 25 d R di H . a y us ft 0.7 0.75 0.78 .51 .5 .49 0.81 0.81 0 83 Bkf Shear (lb/ s ft) 0.1 .1 0.11 .046 .045 .045 0.07 0.05 . 0.1 Table 1: Existing, Reference and Proposed Stream Morphological Characteristics Page 3 of 3 ?OF Vv n /9QG Michael F. Easley, Governor O 7' William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Q ?( Alan W. Klimek, P.E. Director Division of Water Quality August 12, 2005 DWQ Project # 05-1354 Perquimans County CERTIFIED MAIL: RETURN RECEIPT REQUESTED Mr. Salam Murtada NC Ecosystem Enhancement Program 1652 Mail Service Center Raleigh, NC 27699-1699 Subject Property: Watts Property Stream and Wetland Restoration Project REQUEST FOR MORE INFORMATION Dear Mr. Murtada: On July 19, 2005, the Division of Water Quality (DWQ) received your application dated July 14, 2005 to impact 2,200 feet of streams to construct the proposed wetland and stream mitigation project at SR 1326 near the Town of Hertford in Perquimans County. The DWQ has determined that your application was incomplete and/or provided inaccurate information as discussed below. The DWQ will require additional information in order to process your application to impact protected wetlands and/or streams on the subject property. Therefore, unless we receive the additional information requested below, we will have to move toward denial of your application as required by 15A NCAC 2H .0506 and will place this project on hold as incomplete until we receive this additional information. Please provide the following information so that we may continue to review your project. Additional Information Requested: 1. The proposed stream mitigation plan will likely need to be redesigned. The amount of sinuocity planned for the site seems excessive especially considering the planned sinuocity (1.52) is much higher than the reference site (1.3). With this large amount of sinuocity, we have concerns that the channel will become stagnant rather than function like a flowing stream as designed. 2. We believe that a site visit with Corps and DWQ staff will likely be needed to address this issue and the basic issue of whether the site originally had a natural stream channel. Recent experience with DWQ and Corps staff is that stream restoration on small first order catchments in the coastal plain can be problematic and require site visits since many of these sites may never have had streams in the past. If that is the case, then this site would not be a good candidate for stream restoration. 3. Please provide a complete, tabular summary of the stream mitigation and reference reach data following the format of Appendix B of the NC Stream Restoration Guidelines. This table must be provided (and usually is provided) with every stream mitigation project in the state to allow efficient review of stream mitigation proposals. 401 Oversight/Express Review Permitting Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-1786 / FAX 919-733-6893 / Internet: httn://h2o.enr.state.nc.us/ncwetlands NOne Caro ta na aral An Equal Opportunity/Affirmative Action Employer- 50% Recycled/l0% Post Consumer Paper 1 .1 1 Salam Murtadaj Page 2 of 2 August 12, 20051 Please respond within three weeks of the date of this letter by sending this information to me in writing and Kyle Barnes of the DWQ Washington Regional Office. If we do not hear from you within three weeks, we will assume that you no longer want to pursue this project and we will consider the project as withdrawn. This letter only addresses the application review and does not authorize any impacts to wetlands, waters or protected buffers. Please be aware that any impacts requested within your application are not authorized (at this time) by the DWQ. Please call Mr. John Dorney or Mr. Larry Eaton at 919-733-1786 if you have any questions regarding or would like to set up a meeting to discuss this matter. JRD/jrd Sincerely, cc: Kyle Barnes, DWQ Washington Regional Office Dave Lekson, USACE Washington Regulatory Field Office File Copy Central Files Larry Eaton, DWQ John Hennessy, DWQ Filename: 2005135WattsRestoratloh(Perquimans)on hold j I j WattFeProper':y Stream/Wedand DWQ # 05-1354 Subject: Watts Property Stream/Wetland DWQ # 05-1354 From: Laurie Dennison <laurie.j.dennison@ncmail.net> Date: Mon, 15 Aug 2005 07:53:01 -0400 To: SALAM MURTADA <SALAM.MURTADA@ncmail.net> Please see attached the Division of Water Quality's request for more information related to your recent application. Please note that this message is being forwarded to you electronically so that you may expedite preparation of your response. Please do not send your response as a reply to this e-mail or via fax. The hard copy is being sent via US Mail. All response correspondence is to be mailed via hard copy to the 401 Oversight and Express Permits Unit, 2321 Crabtree Blvd., Raleigh, NC, 27604 unless otherwise noted. 20051354WattsRestoration (Perquimans)On hold.doc Content-Type: application/msword Content-Encoding: base64 1 of 1 8/15/2005 7:56 AM 1111z", NC Division of Water Quality Wetlands/401 Unit August 11, 2005 Memorandum To: John Dorney From: Lawrence Eaton Z Subject: Comments on Watts Property Restoration, Perquimans Co, (051354) The Watts Property restoration is an agricultural field with many ditches in a small watershed (0.13 sq miles) near Elizabeth City, NC. The tract has been in agriculture for well over 100 years and is essentially flat, having at most a three foot drop in elevation along the length of the straight 1523 ft main ditch. Photos taken in February show little water and no discernable flow in the main ditch on the property. After discussing portions of this project with you, Dave Penrose and Leilani Paugh, I have concluded that if this project were to be built as designed, large amounts of money would be spent for very little benefit. The existing ditch, which already apparently does not flow for most of ,r cz the year, does not need as much sinuosity as proposed. Each bend, and the structures which protect it, costs money. With such a large property, a few, large bends would be a much more UIS, "natural" channel design for this part of the state than the many tight curves currently proposed ?¢ 3 (sinuosity of 1.52). Ms Paugh pointed out that since this is a priority 1 project, which involves bringing up the bed of the existing stream, it would be cheaper to build the new channel somewhere besides in the old channel bed. It's a big flat place out there with no restrictions. Have fun with the design (though I think Leilani was only kidding when she suggested making it a figure 8). This much extra stream length (even the reference site had a sinuosity of only 1.27) will almost guarantee a non-flowing feature for most of the year, which, biologically speaking, is probably not going to be an improvement over what is in the ditch right now. There is only three feet of elevation to lose in '/4 mile, there is no need for that many bends. Fewer bends will increase the slope and the chances that this feature will flow for at least part of the year and thus support more than "ditch fauna". I also have some concerns about the selection of the reference reach. Granted that unimpacted reference reaches are hard to come by in the coastal plain, but the stream chosen as a reference appeared to be much larger (watershed 5-10 times larger) than the restoration site. From the topographic maps, it appears that the headwaters of the reference stream is a series of flat, ditched, fields, like the restoration site, which eventually drain into the steeper, more natural, portion of the stream where 320 feet of the stream were used to determine reference conditions. Part of the potential problems in designing this restoration appear to come from assuming that this piece of stream, that may not have been farmed because it was topographically aberrant, is a normal condition for the flatter sections of the coastal plain that made for easier agriculture. Also, using a stream with a significantly larger watershed than the one proposed for restoration ignores North Carolina Division of Water Quality: Wetlands/401 Unit 1650 Mail Service Center; Raleigh, NC 27699-1650 2321 Crabtree Blvd., Raleigh, NC; 27604-2260 Telephone: (919) 733-1786; Fax: (919) 733-9959 http://h2o. enr.state. nc. us/ncwetlands IV NC Division of Water Quality Wetlands/401 Unit the increasing uncertainty inherent in the regional curves for very large and very small watersheds. Finally, since a "Natural" channel design is proposed, I am having trouble with the idea of using rock to stabilize a stream in a part of the state where natural rock has never existed. The need for rock may be reduced if the project is redesigned to have fewer, wider curves that would require less forcing of the water around bends. Cc: files North Carolina Division of Water Quality; Wetlands/401 Unit 1650 Mail Service Center; Raleigh, NC 27699-1650 2321 Crabtree Blvd., Raleigh, NC 27604-2260 Telephone: (919) 733-1786; Fax: (919) 733-9959 http://h2o,erir.state.nc. us/ncwetlands 200.1354 STREAM & WETLAND RESTORATION PLAN FOR Watts Property Perquimans County, North Carolina Prepared for 11161, **V- S&EC Project No. 8099.D1 March 2005 REVISED April 2005 REVISED June 2005 REVISED July 2005 TABLE OF CONTENTS COVER SHEET TABLE OF CONTENTS 0%n0% JU` 19 2p05 wP?ejkao ,Soo *1 Sao 50 1.0 INTRODUCTION ....................................................................................................... 1 2.0 PROJECT GOALS & OBJECTIVES ......................................................................... .. 2 3.0 PROJECT LOCATION .............................................................................................. .. 4 4.0 GENERAL WATERSHED INFORMATION ........................................................... .. 5 4.1 Drainage Area ................................................................................................... .. 5 4.2 Land Usage & Distribution ............................................................................... .. 5 4.3 Future Land Use ................................................................................................ .. 5 5.0 EXISTING SITE CONDITIONS ............................................................................... .. 6 5.1 Existing Hydrologic Features ........................................................................... .. 6 5.2 Site Soils ........................................................................................................... .. 7 5.3 Existing Plant Community ................................................................................ .. 7 5.4 Threatened and Endangered Species ................................................................ .. 7 5.5 Stream Geometry & Substrate Material ............................................................ .. 8 5.6 Nearby Areas of Historical Significance .......................................................... .. 8 5.7 Floodplain Coordination ................................................................................... .. 8 5.8 Other Site Features & Utilities .......................................................................... .. 9 6.0 STREAM & WETLAND EVALUATION ................................................................ 10 6.1 Reference Stream & Wetland Studies ................................................................... 10 6.1.1 Stream Reference Reach ....................................................................... 10 6.1.2 Regional Curve Verification ................................................................... 10 6.1.3 Riverine Reference Wetland ..................................................................... 11 6.2 Site Wetland Delineation ...................................................................................... 12 6.3 Site Groundwater Data .......................................................................................... 12 6.4 Site Rainfall Data .................................................................................................. 13 7.0 STREAM & WETLAND RESTORATION PLAN ................................................... 14 7.1 Site Demolition Plan ............................................................................................. 14 7.2 Stream Restoration Concept ................................................................................. 14 7.3 Natural Channel Design ........................................................................................ 15 7.3.1 Restoration Methodology ............................................................................. 15 7.3.2 Channel Competency Determination ........................................................... 16 7.3.3 In-Stream Structures .................................................................................... 17 7.4 Planned Hydrologic Modifications ....................................................................... 17 7.5 Wetland Vegetative Community Restoration ....................................................... 18 7.5.1 Riverine Planting Zone ............................................................................. 18 7.5.2 Non-Riverine Planting Zone ..................................................................... 20 7.5.3 Herbaceous Planting Zones .......................................................................... 21 7.6 Soil Restoration .....................................................................................:............... 22 7.7 Removal of Invasive or Undesirable Species ....................................................... 22 7.8 Erosion & Sediment Control ................................................................................. 22 i 7.9 Construction Sequence .......................................................................................... 23 8.0 STREAM & WETLAND SUCCESS CRITERIA & MONITORING PLAN ........... 26 8.1 Stream Restoration Monitoring ......................................................................... 26 8.1.1 Physical Monitoring ..................................................................................... 26 8.1.3 Biological Monitoring .................................................................................. 27 8.2 Wetland Restoration Monitoring .......................................................................... 27 8.2.1 Hydrologic Success Criteria ........................................................................ 27 8.2.2 Vegetative Success Criteria ...................................................................... 27 8.2.3 Physical Success ....................................................................................... 28 8.3 Monitoring Schedule ......................................................................................... 28 LIST OF FIGURES LIST OF APPENDICES ii LIST OF FIGURES FIGURE 1 Project Vicinity Map FIGURE 2 USGS Topographic Map - Site Location FIGURE 3 Perquimans County Soils Survey Map - Site Location FIGURE 4 USGS Topographic Map - Reference Site Locations FIGURE 5 Perquimans County Soils Survey Map - Reference Sites FIGURE 6 Existing Site Conditions FIGURE 7 Proposed Site Conditions & Index Map FIGURE 8 Proposed Stream Restoration Layout - Sheet 1 of 3 FIGURE 9 Proposed Stream Restoration Layout - Sheet 2 of 3 FIGURE 10 Proposed Stream Restoration Layout - Sheet 3 of 3 FIGURE 11 Proposed Stream Longitudinal Profile - Sheet I of 3 FIGURE 12 Proposed Stream Longitudinal Profile - Sheet 2 of 3 FIGURE 13 Proposed Stream Longitudinal Profile - Sheet 3 of 3 FIGURE 14 Typical Restored Channel & Floodplain Cross-sections FIGURE 15 Typical In-channel Structures & Bank Stabilization Details FIGURE 16 Erosion Control Details I FIGURE 17 Erosion Control Details II FIGURE 18 Site Planting Plan FIGURE 19 Planting Details iii LIST OF APPENDICES APPENDIX A Site Photographs APPENDIX B Reference Stream & Wetland Photographs APPENDIX C Preliminary Site Groundwater Data APPENDIX D Site Rainfall Data APPENDIX E Stream Morphological Characteristics Data Table APPENDIX F Existing Conditions Stream Data APPENDIX G Reference Reach Stream Data APPENDIX H Proposed Conditions Stream Data APPENDIX I State Historic Preservation Office (SHPO) Letter APPENDIX J Perquimans County Floodplain Coordination Letter iv 1.0 INTRODUCTION Soil & Environmental Consultants, PA (S&EC) has been contracted by the North Carolina Ecosystem Enhancement Program (NCEEP) to restore approximately 1,523 linear feet of stream channel, 4 acres of riverine (stream-side) wetlands, and 40 acres of non-riverine wetlands on the Watts Property near the town of Hertford in Perquimans County, NC (Hydrologic Cataloging Unit 03010205). Using natural channel design, there is the potential to restore as much as 2,200 linear feet of stream channel. See Figure 1 for a site vicinity map. In March 2005, S&EC prepared a Conceptual Restoration Plan to gain concurrence from the NCEEP on our concept for the restoration of the impaired stream and the former site wetlands. At that time we solicited additional comment and input from NCEEP for incorporation into this Restoration Plan. We have incorporated the comments and suggestions provided by NCEEP into our plan. This report presents our design rationale and documentation for the proposed Restoration Plan to restore stream function, wetland hydrology and vegetation, and the resultant habitat. This will be performed through the construction of an appropriately sized coastal stream and site grading including but not limited to the filling of existing site drainage ditches. Once complete the restored stream and wetlands will be planted with the appropriate vegetative species. The interested reader is referred to the included figures and appendices for additional information. 2.0 PROJECT GOALS & OBJECTIVES The channelized and impaired state of the existing stream, limited floodplain functionality due to channel incision, existing and future sedimentation and erosion potential, and lack of native vegetation along the banks and riverine buffer zone indicate that this length of stream presents a viable restoration project. Additionally, the remainder of the property consists of former coastal wetlands which, through the use of agricultural practices including ditching, have been converted for use as agricultural lands. In this process we intend to accomplish the following objectives: 1) Restore approximately 1,523 linear feet of appropriately sized stream channel that is stable and self-maintaining, and that will not aggrade or degrade over time, by utilizing Rosgen-based natural channel design procedures and techniques. 2) Develop a restored channel with the appropriate morphological characteristics (cross-sectional dimension, pattern, and longitudinal profile) utilizing locally collected reference reach data as a guide. Allow for no net loss of overall channel length in the process. 3) Create and/or improve bed form diversity (riffles, runs, pools, and glides) and improve aquatic and benthic macroinvertebrate habitat. 4) Construct a floodplain (or local bankfull bench) that is accessible at the proposed bankfull channel elevation. 5) Ensure channel and stream bank stabilization by integrating in-stream structures and native bank vegetation. 6) Establish a native forested and herbaceous riverine buffer plant community within a minimum width of 50 feet from the edge of the restored channel. This new community will be established in conjunction with the eradication of any existing exotic and/or undesirable plant species. 7) Restore approximately 4 acres of riverine (stream-side) wetlands within the newly established floodplain of the restored channel. Provide the desired riverine wetland community through the use of microtopographic grading and the planting of the appropriate wetland vegetative species. 8) Restore approximately 40 acres of non-riverine wetlands within the site through the modification of existing site features which currently alter hydrology. Provide the desired wetland vegetative community through the planting of the appropriate wetland vegetative species. 2 9) Allow for treatment of nutrient rich agricultural runoff from adjacent and upstream properties through the utilization of riverine wetlands as a treatment mechanism. 10) Restore habitat in and along the stream and riverine corridor by enhancing vertical and horizontal structure perpendicular to the restored channel. In doing so provide cover, travel corridors, and access to the adjacent natural areas for mammalian, reptilian, and avian species. 11) Incorporate the restoration effort into the site's surroundings to provide aesthetic and educational values. 3 3.0 PROJECT LOCATION The Watts Property Stream & Wetland Restoration project is located in the Pasquotank River Basin, Hydrologic Cataloging Unit 03010205, along the southwest bank of the Little River near its confluence with the Albermarle Sound in Perquimans County, NC. The site, near Hertford, NC, is immediately adjacent to Norma Drive near its intersection with Little River Shore Road (SR 1326). See the attached Site Location Map (Figure 1) and the attached 7.5 minute series USGS Topographic Map, Nixonton, NC (Figure 2) for specifics on directions to the site and the surrounding vicinity. According to the North Carolina Department of Environment and Natural Resources (NCDENR), Division of Water Quality (DWQ) website, the Little River (Stream Index Number 30-5-(2)) is classified as a Class SC watercourse. The following definitions apply: Class SC - aquatic life propagation and survival, fishing, wildlife, and secondary recreation. The site consists of a single tract of approximately 48 acres, previously owned by Mr. Richard Watts of Venice, Florida. 4 4.0 GENERAL WATERSHED INFORMATION During our analyses we observed characteristics of the site and surrounding area, verified surface and channel flow conditions, and observed existing water conveyance structures. This section describes our evaluation of the project watershed (See Figure 2). 4.1 Drainage Area The watershed area for the project site is estimated at approximately 0.16 square miles (102 acres). Much of the drainage area is interlaced with a complex system of interconnecting drainage ditches designed to evacuate surface water and draw down ground water during the wetter portion of the year. The outlet for the drainage is an existing pipe which carries discharges from the site (and contributing drainage) under Norma Drive and into the Little River. 4.2 Land Usage & Distribution The entirety of the site itself has most recently been used for agricultural purposes (primarily soybean production). It is our understanding that this use has been continuous for many years. The surrounding area and contributing watershed is similarly used primarily for agricultural purposes and timber operations (mixed pine and hardwood forest) with individual home sites, a few small clusters of higher density residential lots (1 /2 to 1 acres), and agricultural buildings. Select small municipal, commercial, or industrial facilities are also sparsely intermixed into the mostly rural landscape. 4.3 Future Land Use With the execution of the proposed restoration plan, the site will be removed from agricultural use, regraded, and planted with a mix of woody and herbaceous wetland vegetative species. Based on our observation of current land use in the surrounding area and the primarily rural landscape, it is unlikely that future (5 to 10 years) land usage will differ considerably from the current use. 5.0 EXISTING SITE CONDITIONS On October 10 & 12, 2003, and again on January 13 & 14, 2004, Soil & Environmental Consultants, PA, performed a limited engineering survey using Total Station equipment to identify site characteristics to include, but not limited to drainage ditches, open channels, water conveyances, utilities, and structures. While on site, we also observed surface and open channel flow conditions, and the surrounding (and contributing) drainage area. This section describes existing site conditions at Watts Property based on field data recorded by Soil & Environmental Consultants, PA, during our site visits to date. See attached Existing Site Plan (Figure 6) and the Appendix A - Site Photographs for details. The location and direction of view for site photos is shown on the Existing Site Plan. 5.1 Existing Hydrologic Features As previously noted, much of the contributing drainage area (both on and off site) is interlaced with a complex system of interconnecting drainage ditches. From their configuration it is evident that they were installed to evacuate site surface water and draw down ground water during the wetter portion of the year. In doing so, these ditches have allowed for easier access of farm equipment and the resultant utilization of a significantly larger portion of the surrounding landscape for agricultural practices. The on-site network includes a total of twelve (12) intersecting agricultural ditches of varying dimensions totaling over 9,000 feet in length. Many of these ditches eventually drain to a single straightened and dredged stream channel which bisects the property. This system is shown in detail on Figure 6 along with indicators of flow direction. These feeder ditches range from roughly 6 to 15 inches deep up to 2 to 3 feet in depth (at top of bank). The feeder ditches vary in top width from approximately 4 to almost 8 feet in width. At select locations the ditch network is tied with existing corrugated metal pipe (CMP) and corrugated plastic pipe (CPP) culverts ranging in size from 12 inches to 24 inches. These pipes serve as crossing locations for farm equipment allowing access to all portions of the property. The main channel, for which stream restoration is proposed, serves to collect site surface runoff (overland and from adjacent the ditches) and site groundwater. This same channel also receives upstream watershed discharges from two agricultural ditches near the southern property boundary. In its current straightened condition the channel is approximately 1,523 feet in length. A 24 inch CMP culvert is situated at the approximate mid-point of the existing reach. The channel ranges from 3 to 4 feet in depth (at top of bank) while varying in top width from approximately 6 feet to as much as 10 feet in width. The stream banks are moderately steep to steep along much of the channel length with little or no vegetative cover over most of the length. The average slope along the length 6 of the existing channel is 0.00217 ft/ft. No woody vegetation was observed on any of the site stream or ditch banks, with the exception of the south side of the two feeder ditches which parallel the southern property line. Along these, the southern bank is densely vegetated with woody vegetation. The stream leaves the site near its north property boundary through an existing 24 inch CMP under Norma Drive and into a feeder canal for the Little River. The pipe itself is completely submerged (at both ends). The upstream culvert headwall is in disrepair and the downstream end of the pipe has no discernable headwall and is crushed. During our site visits we observed excessive sedimentation within the pipe, partially burying the downstream end of the culvert. Consideration should be given to the replacement of existing pipe with an appropriately sized pipe arch culvert. 5.2 Site Soils The site's location is shown on the Perquimans County Soil Survey segment included as Figure 3. In the Perquimans County Soil survey, on-site soils are mapped Roanoke silt loam. The USDA describes the Roanoke silt loam as a nearly level, poorly drained soil with slow permeability and moderate shrink swell potential. The high water table is at or near the surface and when drained the soil is well suited to corn, soybean, and grain production. Dominant vegetative communities usually include loblolly pine, red maple and sweet gum with an understory of cedar, American holly, sweet bay, sourwood, reeds, and wax myrtle. Select hand auger borings were performed at various locations. Based on our observations, it is our opinion that site soils are uniform and taxonomically consistent with Roanoke silt loam. No laboratory soil tests were performed. 5.3 Existing Plant Community As the site has been used for soybean production, the natural plant community has been greatly altered. The site is barren except for remnant vegetation on the south side of the two feeder ditches which parallel the southern property line. This woody vegetation consists primarily of Red Maple (Ater rubrum). Vegetation in the surrounding wooded areas consist primarily of Loblolly Pine (Pinus taeda) and Red Maple (Ater rubrum). 5.4 Threatened and Endangered Species In order to assess potential impacts to any federal and state threatened and/or endangered species the proposed restoration effort may pose, a review was performed at the North Carolina Natural Heritage Program (NHP) Raleigh office. A two-mile radius of the site was evaluated for known Elements of Occurrence of threatened/endangered animals, and a five-mile radius was evaluated for threatened/endangered plants. No Elements of Occurrence of threatened or endangered federal and state animals were located within the radii specified above. The closest Element of Occurrence of a threatened/endangered animal to the site is an active bald eagle (Haliaeetus leucocephalus) nest approximately 5 miles east of the site across the Little River in a marsh area. We believe that the proposed restoration work will have no adverse effect on bald eagle habitat, and will likely help to enhance local habitat quality. Within 5 miles, a state threatened vascular plant has been observed. The Carolina grasswort (Lilaeopsis carolinensis) occurs within freshwater marshes, pools, and tidal marshes within the coastal plain. Since the site has been drained and used as cropland, it is unlikely that any suitable habitat for the Carolina grasswort remains. It is unlikely that restoration activities will have a detrimental impact on this species. 5.5 Stream Geometry & Substrate Material The current channel was surveyed to develop a total of four (4) stream cross-sections and a longitudinal profile defining the existing conditions. From this data, we performed a Level II Classification (Rosgen) for the existing stream resulting in a Type 136c (very low width/depth ratio) in the upper third of the reach, and a slightly entrenched Type E6 channel for the remainder of the reach. These classifications were consistent with our site observations. The sinuosity of the existing channel is approximately 1.0, a value which is out of the acceptable range for both a Type B and a Type E stream. The average entrenchment ratio of the existing channel is 4.42, and the average width depth ratio is 4.66. The measured bankfull slope was 0.0022 ft/ft. 0.12 9 c The existing channel bed has little or no facets due to straightening and dredging. The silt bed is generally homogenous throughout the reach. Table 1 (Stream Morphological Characteristics Data Table) in Appendix E contains the morphological characteristics for the existing, reference, and proposed stream conditions. 5.6 Nearby Areas of Historical Significance The State Historical Preservation Office (SHPO) was contacted in order to determine potential impacts as a result of the proposed restoration effort at Watts Property to any nearby areas of historical significance. According to Ms. Renee Gledhill-Earley at SHPO, and as described in her letter dated March 9, 2005, there are no nearby areas of historical significance that would be impacted by the proposed work. A copy of this letter is enclosed as Appendix I. 5.7 Floodplain Coordination Mr. William Ethridge and Mr. Zeke Jackson of the Planning Department of Perquimans County were consulted regarding the proper procedure for the approval of this project. A letter dated June 20, 2005, was forwarded to the department describing the restoration efforts and requesting written approval of the project. A copy of this letter is included as Appendix J. 8 5.8 Other Site Features & Utilities Based on our site observations to date, a single structure currently exists on the property. This structure is an open-frame farm equipment shed located in the northwest corner of the property. This structure is proposed for demolition during site restoration. Select other utilities to include electric and telephone are located along the northern property boundary immediately south of Norma Drive. These utilities will require specific location and marking by the selected construction contractor prior to commencing restoration work. If the road and/or utility easements fall within the project bounds, coordination will be required in order to obtain a written encroachment agreement with the appropriate entities. S&EC has begun coordination in order to expedite the process. For planning purposes we have estimated easements at the site at 50 feet and 30 feet for the roadway and electric utility easements respectively. These estimated easements are reflected on Sheet 6. Actual easement widths, once determined, will be reflected on the Construction Drawings. 9 6.0 STREAM & WETLAND EVALUATION In order to facilitate restoration plan development as well as support project goals, an off- site stream reference reach and two reference wetland areas (one riverine and one non- riverine) were characterized. This section describes our evaluation to date of the reference sites, our on site jurisdictional waters delineation, existing groundwater conditions, and site rainfall. 6.1 Reference Stream & Wetland Studies All reference areas occupy similar landscape positions to that of the Watts Property site. The reference areas were quantitatively or qualitatively assessed, and species lists for each vegetative stratum (trees, shrubs, herbaceous, and vines) were recorded. 6.1.1 Stream Reference Reach The stream Reference Reach is located west of Red Bank Road (SR 1331) approximately 5000 feet north of its southern intersection with Woodville Road (SR 1329) (see Figure 4). The reach consisted of an unnamed tributary of the Little River. Similar to our restoration reach, this tributary flows generally east- northeast discharging along the western bank of the Little River. This location is approximately 3 miles northwest of the Watts Property. Due to the limited availability of reference streams in the area, this site was chosen due to its close proximity to the site while maintaining conditions similar to those we intend to replicate at the restoration site. The reference reach was surveyed with Total Station equipment. Our survey included approximately 320 linear feet of channel or approximately 35 bankfull widths (20 to 30 bankfull widths is desired). Two (2) cross sections and a longitudinal profile were surveyed. Key morphological characteristics developed include; a bankfull cross-sectional area (Abkf) of 8.07 square feet (ft) , a bankfull width (Wbkf) of 8.53 feet, and a mean bankfull depth (dbkf) of 0.95 feet. (`? ? 0, The reference channel has an average entrenchment ratio of 5. 1, and an average 5\? ` c6 nn` width/depth ratio of 8.9. Channel sinuosity is approximately 1.3, and bankf_u_ll slope is approximately 0.0014 ft/ft. The reference reach has distinct facets corresponding with channel pattern. The Level II classification for the reference reach is E6. Table 1 in Appendix E contains the morphological characteristics of the surveyed reference stream reach. Vegetation adjacent to the reference reach was similar to that described for the riverine reference wetland described in the next section. Photos of the reference reach are provided in Appendix B. 6.1.2 Regional Curve Verification Using data published by North Carolina Stream Restoration Institute (SRI) 10 (Regional Curves for North Carolina Coastal Streams - SRI 2003) we compared our reference data expectant riffle dimension characteristics for a stream with a watershed area of 0.45 square miles. Cross-sectional Area, Bankfull Width, and Mean Depth were all compared with the curve line and their placement in relation to the 95% confidence limits (upper and lower) for each of the three curves. The comparisons are presented in the following table: Regional Curve Data Morphological Reference Characteristic Reach Lower Curve Upper Data Limit Line Limit Cross-sectional Area, ft.2 8.07 2.30 8.57 28.00 Bankfull Width, ft. 8.53 4.30 8.23 17.00 Mean Depth, ft. 0.95 0.42 1.02 2.50 6.1.3 Riverine Reference Wetland The riverine reference wetland is located east of Red Bank Road (SR 1331) approximately 5000 feet north of its southern intersection with Woodville Road (SR 1329) (see Figure 4). This location is approximately 3 miles northwest of the Watts Property. The site is directly across the road from the stream Reference Reach along the same channel. In the Perquimans County Soil Survey, reference site soils are mapped as Chowan silt loam (see Figure 5). This soil type is very poorly drained and occurs on the flood plains of small streams that flow into the Perquimans River. The canopy is dominated by Red Maple (Ater rubrum), with some Green Ash (Fraxinus pennsylvanica) and American Elm (Ulmus americana) present. It is evident that approximately 60-80% of the canopy was damaged by the hurricanes that struck the area in 2004. The shrub stratum consisted of Chinese Privet (Ligustrum sinense), Japanese Honeysuckle (Lonicera japonica), Greenbriar (Smilax spp.), and Rattan Vine (Berchemia scandens), as well as saplings from species in the tree stratum. It is evident that manipulation of this site has occurred in the past, and, while we recognize the reference vegetation lacks diversity, we found it suitable for our purposes. Within the restoration, we utilized the Classification of the Natural Communities of North Carolina " to select later successional species to restore the communities that naturally existed in this area before anthropogenic alterations. Photographs of the Riverine reference wetland are provided in Appendix B. 11 6.1.4 Non-Riverine Reference Wetland The non-riverine reference wetland is also located east of Red Bank Road (SR 1331) approximately 4000 feet west/northwest of its intersection with Woodville Road (SRI 329) (See Figure 4). This area appears to flood much less frequently than the riverine reference wetland and although no areas of standing water were observed, soils were saturated to near the ground surface. In the Perquimans County Soil survey, reference site soils are mapped as Tomotley fine sandy loam, a poorly drained soil with moderate permeability. The canopy was dominated by Loblolly Pine (Pinus taeda). Also in the canopy several Tulip Poplar (Liriodendron tulipifera), Red Maple (Ater rubrum) and an unidentified oak were observed. The shrub stratum consists of Wax Myrtle (Myrica cerifera), Sweet Gum (Liquidambar styraciflua), American Holly (Ilex opaca), and Greenbrier (Smilax spp.), as well as saplings from species in the tree stratum. Photographs of the non-riverine reference wetland are provided in Appendix B. 6.2 Site Wetland Delineation On December 18, 2003, Soil & Environmental Consultants, PA, met with Mr. David Lekson of the U.S. Army Corps of Engineers (USACE), Washington District Office to observe site conditions, evaluate site soils, and discuss general restoration alternatives for the Watts Property project. At that time we understood that Mr. Lekson was in general agreement with our evaluation of site soils, and the general suitability and potential for the preliminary estimates regarding riverine and non-riverine wetland restoration. We are currently working with the U.S. Army Corps of Engineers Washington Office to determine an approach to the site wetland delineation. Additionally, we will contact the Natural Resources Conservation Service (NRCS) to confirm the Prior Converted (PC) wetland status of the property. 6.3 Site Groundwater Data Our evaluation of site groundwater to date included the siting and installation of a series of groundwater monitoring gauges with electronic data loggers. These gauges were provided to S&EC by NCEEP. A total of six (6) Infinities USA, Inc., data logger gauges (numbered W-1 through W-6) were installed on the project site on December 11, 2003. Locations of gauges are shown on Figure 6. Since their installation, these gauges have been downloaded on approximately a quarterly basis. To date all gauges have remained functional. We will continue to download collected data during the design process. On March 22, 2005, a total of four (4) gauges were installed on the reference wetlands, two (2) at the riverine reference wetland site (WRR-1 and WRR-2) and two (2) at the non-riverine reference wetland site (WRN-1 and WRN-2). Similar to the site gauges these will be downloaded on an approximate quarterly basis. 12 Gauge data from both the site and reference wetlands (riverine and non-riverine) was compiled for design use and incorporation into this Restoration Plan. Data collected from these gauges is provided in Appendix C. 6.4 Site Rainfall Data Our site work also included the purchase, siting, and installation of one (1) 6.5-inch diameter, 0.01-inch, self-emptying tipping bucket rain gauge data logger (Infinities USA, Inc.) on site. The gauge was installed on December 11, 2003. On or around March 27, 2004, vandals damaged the gauge and a second gauge subsequently was purchased and installed on the site. To date this gauge remains in place and functional. Approximately 3 months of rain data was retrieved from the damaged gauge. The location of the installed rain gauge is shown on Figure 6. Similar to the groundwater monitoring gauges rain data has also been collected on a quarterly basis and is provided in Appendix D. We will continue to download collected rainfall data during the design process. For comparison purposes we have obtained and plotted data (on the same graph) from the North Carolina Climate Retrieval Observations Network of the Southeast (CRONOS), Elizabeth City, FAA Airport gauge in Elizabeth City, NC. 13 7.0 STREAM & WETLAND RESTORATION PLAN Restoration of the Watts Property will be accomplished restoring the existing stream channel, restoring riverine or streamside wetlands associated with the restored stream channel, re-grading previously altered non-riverine wetland areas, and planting these denuded wetland areas with native wetland vegetation. We will use our reference stream reach (and other available stream data), and our two reference wetland areas (riverine and non-riverine) as a guideline. The interested reader is referred to Figures 6 through 20 for additional information regarding the proposed restoration plan. 7.1 Site Demolition Plan Site demolition will consist of the removal of the existing wooden equipment shed, the pulling of existing culverts, and the filling of existing agricultural drainage ditches. Current plans do not call for the removal or relocation of any utilities (running parallel to Norma Drive) or the replacement of the existing culvert beneath Norma Drive. The scheduled construction contractor shall be responsible for demolition, removal, and the appropriate disposal of all demolition debris in accordance with local, state, and federal guidelines. It will be the contractor's responsibility to identify appropriate local disposal sites, obtain necessary disposal permits, and pay permit fees. 7.2 Stream Restoration Concept The implementation of the restoration plan will result in the development of a stable natural stream channel within a contiguous fully vegetated and protected riverine corridor. In order to perform the necessary stream restoration along the impacted reach, natural channel design methods will be employed. The restored reach will have the appropriate dimension (cross-section), pattern (sinuosity), and profile (channel slope) of a naturally occurring, stable channel based on the use of an appropriate reference reach with the appropriate valley type and land form. Design will include the evaluation of both water and sediment transport requirements to produce a stable stream in dynamic equilibrium. Restoration of natural channel geometry and structure will not only improve morphologic function and habitat within the immediate channel environment, but also in the water quality downstream of the restored channel as well. Stream banks will be planted with native vegetation that represents both woody (trees and shrubs) and herbaceous species. Species selection will be based on a survey of the vegetation from the reference reach and from reference literature that details native species. Restoration of a suitable riverine buffer will enhance the recovery and protection of the restored stream. A protected buffer (with a width minimum of 50 feet) will be restored on both sides of the channel restoration reaches. The wooded corridors that will be established as part of this restoration will also increase the vertical and horizontal 14 IS structure perpendicular to the channel along the reach helping to increase species composition and abundance. Additionally, the presence of a wooded buffer adjacent to the channel not only increases in-stream habitat quality by cooling water and increasing oxygen content, it also provides cover, travel corridors, and access to adjacent natural areas for mammalian, reptilian, and avian species as well. 7.3 Natural Channel Design The restoration design for the site stream is based on natural channel design principles and techniques utilizing reference reach data sets and the existing channel conditions survey data. Reference data utilized in our design will include the reference reach, two comparative reference reaches, and the North Carolina Coastal Regional Curve (SRI 2003). A conceptual sketch of the general restoration alignment is provided in Figures 7, 8, and 9. Typical proposed channel and floodplain cross-sections are shown in Figure 14, and the proposed longitudinal profile is shown in Figures 11, 12, and 13. 7.3.1 Restoration Methodology The proposed stream type is an E6. If the construction of a stable E6 channel becomes difficult and costly due to less cohesive soils in the upper sections of the stream banks, the channel will be constructed as a low width/depth C6 so that it will have stable banks and will be able to adjust to a stable E6 over time. The channel will be a meandering reach with stable pattern, profile and dimension. Table 1 in Appendix E contains existing, reference, and proposed stream morphological characteristics. Log cross vanes will be located at the beginning and end of the reach, and at any straight sections of significant length throughout the reach. The cross- vanes will provide grade control for the reach and protect both sides of the channel stream banks in straight sections. Log j-hooks will be placed at various locations throughout the reach. The j-hooks will protect the outside meanders from lateral erosion, improve channel facets, and improve sediment transport. The majority of our proposed structures are constructed of hardwood logs with boulder footers. Log cross vanes and j-hooks will be constructed with hardwood logs approximately 12 to 15 inches in diameter. "-Boulders will be utilized in these structures as depicted in the details. While typically not encountered in coastal systems, the presence of rock in the structures will maintain grade control and stability throughout the channel. This restoration will be a Priority I restoration. Restoring sinuosity will lengthen the channel, thereby lowering its s ope. This change in profile will provide a more appropriate hydraulic connection of bankfull flow and the historic floodplain. The restoration design will result in a riffle-pool system with proper pattern and profile. 15 Two smaller tributaries are proposed for construction to accommodate discharges from the herbaceous marsh zones located to the east and west of the channel. These tributaries will have a steeper gradient than the main channel, due in large part to the drop in elevation associated with conveying discharges from the non-riverine zone elevation to the lower elevation associated with the new floodplain (riverine wetland) and the channel invert along the main restoration reach. Erosion control matting (coir matting), temporary seeding, and live stakes will be utilized to reduce bank erosion immediately following completion of the channel and provide bank stabilization. 7.3.2 Channel Competency Determination The mean depth required to maintain natural channel sediment transport without aggradation or degradation was predicted using a critical dimensionless shear stress formula. The two commonly used methods used to calculate the critical shear stress are from ED Andrews: Using the Pavement to Subpavement Ratio: Tei* = 0.0834(D5o,bedID50,bar)-0'872 Equation A Using the Surface Materials Ratio: TC1* = 0.0384(D;/D50,bed)-0.887 Equation B Where: TC;* = Critical dimensionless shear stress Ds0,bed = Median diameter of the active riffle bed material (mm) Ds0,bar = Median diameter of the bar sample or subpavement sample (assumes that the median bar sample is approximately equal to the mean subpavement particle) (mm) D; = Largest particle diameter from bar or subpavement sample (mm) w'A s° To determine which equation will be used, the ratio of Ds0,bed[Dso,bar is \rj '?k calculated. If this ratio falls between 3 and 7, then Equation A is employed. Otherwise, the ratio of D;IDs0,bed is calculated. If this ratio falls between 1.3 and 3, then Equation B is employed. In this project, Equation A was appropriate. 16 Once the critical dimensionless shear stress is obtained, the required depth is calculated using the Shields relation: Where: dbkf _ (ia* YS D;)/S dbkr = Bankfull mean depth required to move largest particle (D;) (ft.) D; = Largest particle diameter from bar or subpavement sample (ft.) TS = Submerged specific weight of sediment (1.65) (dimensionless) S = Water surface slope (ft./ft.) In this case, a necessary mean bankfull depth of 0.88 ft was calculated, so the dbkf of 0.69 ft will be sufficient. 7.3.3 In-Stream Structures As mentioned previously, in order to provide grade control for the restored reach, rock and log cross-vanes and j-hooks (with or without steps), will be integrated within the final design and will be utilized to reinforce and stabilize the proposed channel. All structures will be constructed out of natural materials typically consisting of locally quarried boulders or logs. The upstre? am side?f these_ structures will be lined with a non-woven fabric and backfilled with excavated cannel material,and in some cases imported tone aggregate t? improvesstability and reduce the potential for piping. In-stream structures such as these concentrate stream energy toward the center of the channel and away from the near-bank areas. In doing so, the structure reduces shear stress along the banks and prevents bank erosion. These structures serve as grade control within the bed of the channel and reduce the potential of head cutting, create a stable width/depth ratio (wbkf /dbkf), and promote sediment transport capacity. Proposed structure locations are shown in figures describing the plan and profile of the restored channel and typical structure drawings are shown in Figures 8 through 15. A representative of S&EC will be on site to observe and direct channel restoration efforts including the installation of in-stream structures. 7.4 Planned Hydrologic Modifications Hydrologic modifications, including site grading, will proceed in accordance with Figure 7. Grading will be performed in a manner to restore wetland hydrology by modifying existing site grades in selected areas while simultaneously enabling lateral surface flow across the site. 17 Restoration of wetland hydrology to the site will be accomplished by reversing the effect of the existing drainage system and restoring the stream channel through the site, thereby returning wetland hydrology to the majority of the site. Existing ditches will be filled to grade and the dimension, pattern, and profile of the cha nPI;?P?+rP?m •»;?i hP alt Pre restore natural stream morphology to the--cNa-nnel. Riverine wetland areas will be restored along the length of the restored channel. If necessary, the currently installed upland groundwater monitoring gauges and the rain gauge will be temporarily removed during construction operations. The reference groundwater gauges will remain in place. The rain gauge will be temporarily relocated to allow for the collection of data throughout construction operations. 7.5 Wetland Vegetative Community Restoration Three planting zones will be established on site. Each of the units are discussed in further detail below. 7.5.1 Riverine Planting Zone A riverine planting zone will be established along the restored stream channel from the top of bank outward toward the outer edge of the newly restored floodplain (a minimum of 50 feet). This unit will occupy the lower elevations established onsite via grading. Inundation of this area is anticipated to occur on a frequent basis. The Riverine reference wetland (previously described) was used as a template when developing this planting zone. Tables 1 and 2 display the tree and shrub species that will be incorporated into this planting zone. Figure 18 shows the proposed planting plan, and Figure 19 shows typical planting details. These areas will be seeded and planted with the appropriate native riverine vegetation and will provide channel stability and treatment of surface waters traveling laterally through the buffer. Species will consist primarily of native trees and shrubs. Select planting of herbaceous species may also be recommended during final design. 18 Riverine Tree Planting List Scientific Name Common Name Fraxinus pennsylvanica Green Ash Acer rubrum Red Maple Ulmus americana American Elm Quercus phellos Willow Oak Quercus nigra Water Oak Nyssa biflora Swamp Tupelo Table 1: Riverine Tree Planting List * Species composition may be adjusted based on local availability. Tree species individuals will be planted randomly on an 8 ft. by 8 ft. spacing in order to ensure a desired planting density of 680 stems per acre. This will increase the potential for the desired 5-year survivability density of at least 260 stems per acre. Site planting will include a minimum of five of the tree species in the table above. Riverine Shrub Planting List Scientific Name Common Name Myrica cerifera Wax Myrtle Persea borbonia Swamp Bay Cephalanthus occidentalis Buttonbush Magnolia virginiana Sweet Bay Cyrilla racemiflora Titi Table 2: Riverine Shrub Planting * Species composition may be adjusted based on local availability. Shrub species will be planted at a higher density and closer spacing (6 ft. by 6 ft.) to achieve a desired planting density of approximately 1,200 shrubs per acre here 19 again improving the potential for the desired 5-year survivability. Site planting will include a minimum of three of the shrubs listed in the table above. The restored stream channel banks will be planted with the appropriate channel bank species in the form of bare-root seedlings, potted and balled and burlap plants, and transplants. Native trees and shrubs that are available elsewhere on site will be removed with as much of the root ball intact and transplanted adjacent to the restored channel or in the floodplain. During the following fall, supplemental shrub and tree species will be planted if survival rates of previously planted seedlings are below target densities as determined in mid-summer (June- July). Vegetation will be supplied by locally identified plant sources or purchased from local, reputable nurseries. Other sources, outside of the local area, may be used depending on the availability of plant material. Please refer to the attached Planting Plan, Planting Details, and Planting Schedules regarding quantities and other details for the riverine planting zone. NOTE: All plantings performed on site will adhere to the NCEEP planting specifications. 7.5.2 Non-Riverine Planting Zone A non-riverine planting zone will be established outside of the newly restored floodplain across the remainder of the restoration site, as shown on the Planting Plan. The Non-Riverine reference wetland (previously described) was used as a template when developing this planting zone. Tables 3 and 4 display the tree and shrub species that will be incorporated into this planting zone. Non-Riverine Tree Planting List Scientific Name Common Name Fraxinus pennsylvanica Green Ash Acer rubrum Red Maple Platanus occidentalis Sycamore Quercus michauxii Swamp Chestnut Oak Quercus pagoda Cherrybark Oak Quercus phellos Willow Oak Liriodendron tulipifera Tulip Poplar Table 3: Non-Riverine Tree Planting List * Species composition may be adjusted based on local availability. 20 Non-Riverine Shrub Planting List Scientific Name Common Name Cephalanthus occidentalis Buttonbush Magnolia virginiana Sweet Bay Carpinus caroliniana American Hornbeam Clethra alnifolia Coast Pepper-Bush Cyrilla racemiflora Titi Rhododendron viscosum Swamp Azalea Table 4: Non-Riverine Shrub Planting * Species composition may be adjusted based on local availability. The spacing and density used for the planting of trees and shrubs within the non- riverine zone will be similar to those described above. Please refer to the attached Planting Plan, Planting Details, and Planting Schedules regarding quantities and other details for the non-riverine planting zone. NOTE: All plantings performed on site will adhere to the NCEEP planting specifications. 7.5.3 Herbaceous Planting Zones Multiple herbaceous planting zones will be planted as part of the overall wetland restoration plan. Micro-topographic complexity will be emphasized within the riverine planting zone in order to maximize habitat diversity. Small, shallow backwater pockets and emergent marsh zones will be dug during grading, and later densely planted (2 ft. by 2 ft. spacing) with the following floating and rooted aquatic species: White Water Lily (Nymphaea odorata), Broad-Leaf Arrow-Head (Sagittaria latifolia), Lizard's Tail (Saururus cernuus), Pickerel Weed (Pontedaria cordata), Yellow Cow-Lily (Nuphar luteum), and Stiff Arrow-Head (Sagittaria rigida). Within the non-riverine wetland area, two emergent marsh wetland areas will be graded along the general alignment of the existing site drainage ditches. These areas will allow for diversity within the non-riverine areas allowing for the creation of pockets of standing water suitable for herbaceous growth. These 21 marsh areas within the non-riparian wetland will be planted with live propagules and bare-root seedlings (at a 2 ft. by 2 ft. spacing) of Uptight Sedge (Carex stricta), Soft Rush (Juncus effusus), Olney's Bulrush (Scirpus americanus), Wool-Grass (Scirpus cyperinus), and Soft-Stem Bulrush (Scirpus validus). Temporary and/or permanent seeding measures (brown top millet, rye grass, or the most appropriate erosion control grass as dictated by the season) will be applied to areas disturbed during grading operations to allow for localized stabilization while riverine species establish themselves. A representative of S&EC will be on site to observe and direct planting efforts associated with the site. Details of the proposed restoration planting plan are included on Figures 18 and 19. 7.6 Soil Restoration During grading of site, topsoil will be removed and stockpiled. Topsoil is to be redistributed across planting areas during final grading. Topsoil will be stored in an appropriate manner by contractor to avoid erosion and off site sedimentation. Based on existing site uses and our understanding of previous site modifications we have no indication that underlying site soils are overly compacted. Accordingly current plans do not call for specific modification or soil restoration efforts (amendments and/or scarification) of the existing site soils once grading operations are complete. If however, upon completion of grading operations, areas of compacted soils are observed, localized restoration efforts may be employed i.e.: scarification, addition of topsoil, mulch, or other organics. Amendments will not be added to areas where inundation may occur and transport this material off site. 7.7 Removal of Invasive or Undesirable Species During site preparation, an effort will be made to remove existing exotic/invasive vegetation within project boundaries. Invasive species will be field-identified by S&EC staff. The construction contractor will mechanically remove invasive species and/or treat them locally with a glyphosate-based herbicide. Subsequent site visits will be performed following construction to evaluate the regrowth of invasives and perform spot treatments as needed. 7.8 Erosion & Sediment Control Since the total disturbed/denuded area as a result of restoration plan implementation will clearly exceed one (1.0) acre, an Erosion and Sediment (E&S) Control Permit will be required. Sediment and erosion control measures will be installed by the Contractor prior to commencing site grading activities. Due to the proximity of grading operations to the adjacent open waters and site ditches, extra care should be employed by the contractor to check all E&S control measures at the end of each day and make necessary repairs or additions. Contractor should also inspect all E&S control measures after periods of extended rainfall or significant rainfall events (>0.5 inches). Contractor should repair and stabilize exposed surfaces immediately, and 22 remove and properly dispose of accumulated sediment in turbidity curtain, silt fence, etc. after these events. Site E&S control measures will include silt fence, rock check dams, matting, pumping operations, special (temporary) stilling basins, and temporary and permanent seeding. The contractor shall employ the following E&S control sequence prior to grading: Erosion and Sedimentation Control Sequence 1. Establish staging area as directed by the project manager and designer. Contractor will be responsible for installing necessary E&S control measures at staging area (equipment parking area stabilization, silt fence, or other measures as contractor deems necessary). Establish temporary construction entrances to site. 2. Install sediment and erosion control measures including silt fence and temporary rock check dams as shown. 3. Demolish existing structure and remove wood, metal, concrete debris, refuse, and other materials as specified in the site's demolition plan. Clear and grub in required areas for stream and wetland restoration grading and planting. Contractor shall remove existing site culverts as construction progresses to allow for continued access to portions of the site. 4. Temporary seeding will be applied to areas that are not at final grade and will be exposed for greater than two (2) weeks. 5. Install temporary pump around operations (rock check dams, bypass pump, dewatering pump, and special stilling basin) as seeded during stream construction. Matting must be placed over every excavated channel section at the end of each workday and before the pump is turned off. 6. After final grading is complete, permanent seeding will be applied to all exposed areas. Seeding must be applied to all exposed areas within fifteen (15) days after construction. Erosion control matting will be applied to all final graded sloped steeper than 2H:1 V. Permanent seeding and matting will be installed incrementally as soon as an area reaches final grade. 7. Remove temporary sediment and erosion control measures. Silt fence must not be removed until seed is placed and temporary grass has germinated. The contractor shall remove accumulated sediment prior to removal of silt fence or other measures. This E&S control sequence is also reflected in the plan sheets. Also refer to the Construction Sequence, Sediment and Erosion Control Plan, and Sediment and Erosion Control Details sheets attached. 7.9 Construction Sequence 23 All aspects of site construction and planting operations will be supervised by a qualified representative of Soil & Environmental Consultants, PA (S&EC). The daily sequence of events shall be determined and approved by S&EC professional staff. It will be the Contractor's responsibility to have the appropriate equipment and personnel on site to perform the tasks based on the project schedule. If potential conflicts arise, the Contractor shall notify the Designer immediately so that adjustments can be made. The following construction sequence shall be used during construction: Construction Sequence 1. Obtain local authority approval and all necessary State and Federal permits for construction. 2. Contact NC One Call to locate and mark existing utilities on site. 3. Establish staging area as shown on the plans. Contractor will be responsible for installing necessary E&S control measures at staging area (parking area stabilization, silt fence, or other measures as contractor deems necessary). Mobilize equipment and materials to the staging area. Establish temporary construction entrances to site. 4. Install sediment and erosion control measures including silt fencing, check dams, and turbidity/silt curtain. Install utility and tree protection (if necessary) fencing as directed by Designer. Contractor may utilize existing site ditch crossing locations (if desired) at own risk. 5. Remove wood, metal, concrete debris, refuse, and other materials as specified in the site's Demolition Plan. Clear and grub in required areas for wetland area grading and planting. Remove trees as well as exotic and invasive species as directed by the Designer. 6. Install pump around operation including the installation of special stilling basin(s). 7. Verify channel grading depths and extents. Initiate grading of stream channel and adjacent floodplain area working from upstream end of restoration reach in a downstream direction. Install in-stream structures, matting, temporary seeding, and live stakes. Grade floodplain area. Remove pump around operation and direct flow into excavated channel. Matting must be placed over every excavated channel section at the end of each workday and before the pump is turned off. 8. Verify wetland grading depths and extents. Fill existing site ditches and level grade wetland area as described on plans. Apply temporary sediment and erosion control seeding measures. 9. Perform riverine and non-riverine wetland planting. Apply permanent seeding measures. 24 10. Remove temporary sediment and erosion control measures after groundcover is established and site is stabilized. 11. Conduct final site inspection with the Contractor, NCEEP, and Designer. 7.10 Future Site Maintenance A site tour should be performed after the completion of construction and permanent seeding and planting. Representatives from the design firm, and NCEEP should attend this tour to see the boundaries of site planting and discuss future site maintenance operations that will ensure the protection of trees, shrubs, and plants installed as part of this project. 25 IN 8.0 STREAM & WETLAND SUCCESS CRITERIA & MONITORING PLAN This section includes information concerning stream and wetland restoration success criteria, physical evaluation of the site, and the proposed monitoring schedule. 8.1 Stream Restoration Monitoring Success criteria for stream stability will be met if, for the 5 year period after construction, the stream bed form features and cross-sections remain stable (i.e. the stream retains its restored Rosgen stream-type classification). During the monitoring period, no less than two bankfull flow events must be documented. If less than two bankfull events occur during the 5 year monitoring period, monitoring will continue until the second bankfull event is documented. The bankfull events must occur during separate monitoring years. 8.1.1 Physical Monitoring An as-built engineering survey of the site will be conducted upon completion of the site restoration work to ensure that site grading work was performed in a manner consistent with the restoration plan. The as-built report will include the constructed stream channel dimension, pattern, and longitudinal profile. This data collected by Total Station will be utilized as a baseline to compare future monitoring surveys and subsequently to determine annual channel stability and transition. Cross-section locations to be monitored will be established immediately following construction during the completion of the "as built" survey. Permanently established cross-sections located approximately every 500 to700 feet (depending on final construction) that will comprise of a nested riffle and pool segment. Each cross-section will be monumented and located for future identification and survey work. All of these cross-sectional surveys will also be utilized as photographic points. Other stream channel measurements that will be completed during the annual monitoring exercised will include pebble counts, stream pattern data, and stream- side plant conditions. Annual inspection of in-stream rock and log vane and j- hook structures will also occur to insure channel stability. The restoration reach will be walked and observed for indications of deterioration or failure of any components of the restoration. Stream channel monitoring surveys will be completed annually for five consecutive years, starting the year following the completion of the project. 26 8.1.2 Vegetative Monitoring Vegetative success criteria of 50% coverage will be required at the end of the five (5) year period for the live stakes installed in channel banks of each of the restored reaches. Details of the monitoring are included in the following section. 8.1.3 Biological Monitoring We understand that channel benthic macroinvertebrate monitoring will be sampled and monitored by NCEEP under a separate contract. 8.2 Wetland Restoration Monitoring In order to ensure hydrologic and vegetative success, groundwater elevation and planting monitoring will be conducted annually on site for a 5-year period in accordance with the Stream Mitigation Guidelines (April 2003). The monitoring period will commence immediately upon the completion of site construction and planting efforts. 8.2.1 Hydrologic Success Criteria As previously noted, the Infinities USA, Inc., groundwater monitoring gages will remain in place or be re-installed immediately following the completion of site grading and planting operations. Six (6) gauges will be installed on site, two (2) within the newly restored riverine wetland boundary, and four (4) across the remaining non-riverine areas. The existing site rain gauge will be relocated and remain on site during the monitoring period. In order to meet wetland hydrology, the groundwater elevation will need to be measured within the upper twelve (12) inches of the ground surface for a period of consecutive days equal to or greater than 8.5% of the growing season. According to the Perquimans County Soil Survey, the average growing season (number of frost-free days) is approximately 214 days long, lasting from April I" to November 1"of each year. Accordingly, a groundwater monitoring gauge will be considered to meet hydrologic success criteria if hydrology is met for a period of 18 straight days (rounded down from 18.2 days) during the growing season. It should be noted that while this system is primarily groundwater driven, we do expect occasional, sporadic inundation from the restored channel to affect hydrologic conditions within the restored riverine wetland corridor. 8.2.2 Vegetative Success Criteria Twelve (12) vegetation plots will be established onsite. Six (6) tree and shrub 10- meter square sample plots will be established, each plot offset 2 meters from each gauge positioned within the restoration area. Typically in order for the site to be considered a success, the survivability rate of planted vegetation should be 320 27 stems per acre through year three. A ten percent mortality rate is accepted in year four (288 stems per acre) and another ten percent in year five resulting in a required survival rate of 260 5-year old stems per acre in year five with no one species comprising more than 20% of the total stem count. Exceeding the 20% threshold alone, however, will not serve as criteria for deeming the restoration unsuccessful. Four (4) 2-meter square herbaceous monitoring plots will be established, two (2) within the riverine emergent marsh areas and two (2) within the non-riverine emergent marsh areas. Vegetative success criteria of 50% coverage will be required at the end of the 5-year period for the herbaceous planting zones. This coverage will be qualitatively evaluated based on observation of the planted areas. Two (2) bank planting plots measuring 20 meters in length and encompassing both banks will be established in order to evaluate the success of live stakes along the banks of the restoration. Vegetative success criteria of 50% coverage will be required at the end of the 5-year period. This coverage will be qualitatively evaluated based on observation of the planted areas. During monitoring site visits an evaluation of invasive or undesirable species will be performed and recommendations made regarding necessary removal or treatments. 8.2.3 Physical Success An as-built engineering survey of the site will be conducted upon completion of the site restoration work to ensure that site grading and planting work was performed in a manner consistent with the approved Restoration Plan. During site monitoring visits, the site will be walked and all graded areas will be inspected for stability. If areas of instability are observed, they will be noted and repair recommendations prepared. A photographic record of the site will be collected during each site visit. Photo points will be located at key locations on site and at the corners of established vegetative monitoring plots. 8.3 Monitoring Schedule As previously described, to ensure a stable restored channel morphology (dimension, pattern, and profile), and hydrologic and vegetative success, success monitoring will be conducted annually on site for a period of five (5) years from the implementation of the restoration plan. The site will be visited on a quarterly basis. During each of these site visits groundwater monitoring gauges and the rain gauge will be downloaded and gauges evaluated to ensure proper function. A plant survivability survey will be performed during the growing season (June to July timeframe) on each of the six (6) tree and shrub vegetation plots (2 riverine and 4 non-riverine) , four (4) herbaceous vegetation plots (2 riverine and 2 non- 28 riverine), and two (2) bank planting plots. During site visits a general evaluation (by observation) of the site will be performed and record photographs will be taken. An Annual Monitoring Report will be prepared at the end of each year of monitoring. This report will be submitted to EEP for review not later than 60 days from the end of the monitoring period (December 31 of the monitoring year). The monitoring report will summarize the general site conditions, a channel evaluation, the results of hydrologic and vegetative monitoring, and recommendations for necessary maintenance. 29 • a _ 11 ? 1 1 -' S W r d • ? 'f ? ?yq„ ? 7?} ?, rru . .. an ! • -?kieriik;. N roject X: 5"Ie: 8099.D I I ": 2.4 miles Figure I - Vicinity Map Project Date: Mgr.: P5 02-21-05 Watts Farm Perciulmans County, NC 0 Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www,SandEC.com i i ! i I i l •? I I ` v ? r r r a WRR - Watts Reference Riparian N WRN - Watts Reference Non-Riparian Project k: 5caie: FI ure 4 - Reference 8099.)1 1": 4000 9 Project )ate: 51te5 U5G5 Nlxonton Mgr.: P5 02-2 1 -05 Quad Watts Farm Perciulman5 County, NC Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 - (919) 846-9467 Web Page: www.SandEC.com q` I. I31B l?D1r? ,, 1r N Project M: Scale: FI ure 3 - Per uiman5 5099.D 1 1"; 2000 o County Soil Survey Project Date: Mgr.: P5 02-21-05 Watts Farm Perquiman5 County, NC try 4-EVM IiA f.??,,4t Y IF l?.` ' , ?v?r r s t .IFS r . ? n ? t'Y1 a' ?? ,.y ?c ?'? Y •. ? `) A 11 c': fie H', ., Y. A y yr! ) - '? • A:•1 ? . . w14?1 ` ! y ) 1 ?Y? ' Y TV Wrn f,>?1{1?tY Y!^ J • ? ? ' A999 ? r I't ?. r .? _.' 1 it i?'. ?' y; ?, •1 a; V yt? 1 t.k1 i L I ? YI k ? .4 u w0. y 1? ???Iy i {?r k ) y Soil & Environmental Consultants 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com Project #: 5099.D I Mgr.: P5 N — Site Boundary Watershed Boundary alc: Figure 2 — USGS Date: Nixonton Quad 02-21-05 Watts Farm Percluiman5 County, NC Soil & Environmental Consultants, PA 11010 Raven Ridge Rd. - Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com I I - t L N Project N: scale: " ' Figure 5 -Reference 8099.D I 1 : 2000 51te5 Perclulmans County Project Mgr.: P5 Date: 02-2 1-05 5011 Survey Watts Farm Perqulman5 County, NC WRR - Watts Reference Riparian WRN - Watts Reference Non-Riparian • Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 1:-j. Web Page: www.SandEC.com Li APPENDIX A Site Photographs PLANTING LEGEND RIVERINE EMERGENT MARSH SPECIES ' RVERINE TREE F ] * SHRUB SPECIES . MIX NON-RIVERINE TREE SPECIES NON-RIVERINE EMERGENT MARSH SPECIES - NON-RIVERINE F 1 SHRUB SPECIES NOTE: RES TORED STREAMBANKS TO BE PLANTED W/ LIVE STAKES SITE BOUNDARY EMERGENT MARSH WETLAND AREA i; NON-RIVERINE WETLAND BOUNDARY EM?GENT MARSr ?I?ETLAND AREA APPROXIMATE RIVERINE WETLAND BOUNDARY 1 NORMA DRIVE (GRAVEL ROAD) EMkRGENT MARSH V?TLAND AREA PROPOSED NEW CHANNEL ROPOSED f . . ? NEW CHANNEL ?I© 2005 Sod 4 Environmental Consultants, PA. All rights reserved. 51TE PLANTING PLAN 00 ZO p N ? o d 2 Ln .. co z . V (n MAG. 1979 DI5 15G PG G54 02 ou SCALE Q O zQ Z U ? o 200 100 o 200 N o?U CONTOUR INTERVAL = I' ? Z ALL CONTOURS SHOWN ARE EXISTING U) Z Z a-- c) 0 W (L r EMERGENT MARSH o d` ? s N WETLAND AREA J a O ? w i ? 0 v i ? Vo 1 il N L O SITE BOUNDARY q ? W M B VJ ° Z O `3 ? 3 ci's off` 0 .. zo* NZ - ? IL < M5TING SLOPE 157 NOTE5: a,ss I HEIGHT t WIDTH DETERMINED BY EX15TING TOPOGRAPHY AND SEDIMENT 5TORAGE REQUIRED. SECTION VIEW KEY RIP RAP INTO THE DAM FOR 5TABILIZATION. SECTION VIEW w 0.5'-P FILRR FABRJC NOTES: F. FABWC HEIGHT 4 WIDTH DETERMINED BY E(15TING TOPOGRAPHY AND SEDIMENT 5TORAGE REQUIRED. KEY RIP RAP INTO THE DAM FOR 5TA5IUZATION. PLAN VIEW CU55 5 RIP RAF PAD P MIN. THICKGNE55 tWNOWWVM ROW #57 WA5"ED 5TMr PROFILE VIEW PROFILE VIEW C,e0nxn LE FABRIC SECTION VIEW TEMPORARY COFFERDAM TEMPORARY CHECK DAM MULTI-USE CONFIGURATION TEMPORARY SPLASH PAD DETAIL (NOT TO 5CALE) (NOT TO SCALE) (NOT TO SCALE) Min. 10 Gauge Line Wires fl @2005 Soil * Environmental Con5ultant5, PA. All Q1 kj__ Min. 12-1/2 Gauge Intermediate Wires •ade G' Min. Cover Over 5kirt ichor 51art a5 rected by Engmeed signer STANDARD TEMPORARY SILT FENCE DETAIL (NOT TO SCALE) EROSION CONTROL DETAI L511 reserved. NOTE5: 51LT FENCE MUST NOT BE REMOVED UNTIL 5EEDING 15 PLACED AND TEMPORARY GRA55 HA5 GROWN. ? W Ll " 9 u Q 0 Zr t - &Z u N `o_ J ? 0 o 7_ f- 6z (S) ? Z Z 0_/ 0 O (L 0 z N ? Q 0 Q R 0 > 2 W w u a a? w Ov V S v ' N D? x u i? Steel Post wen Wire Fabric It Fence Fabric FRONT VIEW NOTES: TOPOGRAPHIC DATA DEVELOPED BY LIMITED ENGINEERING SURVEY PERFORMED BY S*EC USING TOTAL STATION. 2. ALL CONTOURS ARE APPROXIMATE AND BASED ON ASSUMED ELEVATION OF 100.00'. 3 THIS 15 NOT A BOUNDARY SURVEY AND 15 NOT FOR RECORDATION, CONVEYANCE, OR SALES. EXISTING AGRICULTURAL STORAGE SHED EXISTING FEEDER DITCHES LEGEND RG? 51TE RAIN GAUGE 51TE GROUND WATER GAUGE / CHANNEL OR DITCH FLOW / DIRECTION PHOTOGRAPH NUMBER (SEE PHOTOS APPENDIX) EX15TING CULVERT PIPE IN DRAINAGE NETWORK 2005 Sod Environmental Consultants, PA, All rights I ITII ITV Pni Fc, SITE BOUNDARY EXISTING CULVERTED FARM CROSSING, TYPICAL, ALL PIPES TO BE REMOVED reserved, EX15T1 NG 51TE CONDITIONS EXPECTED UTI LITY EASEMENT NORMA DRIVE (GRAVEL ROAD) MAG. 1979 DB 15G PG G54 200 100 0 200 CONTOUR INTERVAL = I' ALL CONTOUR5 5HOWN ARE EXI5TING EXISTING FEEDER DITCHES om N .. Z0? II z ? ?m 0, d z =Q Q z of 0 w?z? (S)? z 0- 1 0 ? C) N U' Q N? Q3? ? u a? q N qq V? ?U 2, 3Se? 6 qz V1 NOTE: STRUCTURE LOCATION, TYPE, AND NUMBER ARE APPROXIMATE AND MAY BE MODIFIED BY ENGINEER AT TIME OF CONSTRUCTION. LEGEND P?l._ LOG J-1100K (LJI1) 1z LOG CROSS VANE (LCV) APPROXIMATE RIVERINE WETLAND BOUNDARY LI© 2005 Sod t- Environmental Con5ultant5, PA. All rnght5 reserved i EX TING PIPE T BE RE OVED 97 PROPOSED RESTORED CHANNEL CENTERLINE O? V NORTH ? SCALE ¦ 0 20 0 40 CONTOUR INTERVAL = I' LL CONTOURS SHOWN A ING PROP05ED STREAM RESTORATION LAYOUT II o?? o zo.. ?0 _ A+ 0L Q uL, z z Q L?Q W g oC 0 Lu U-1 z 0 w 0 g N ? w IL 0 ?:,D- a? a a? V? ?e ?U r? N F z ox a u ?a o? ?a SITE BOUNDARY i 9g O EMERGENT MARSH WETLAND AREA NON-RIVERINE WETLAND BOUNDARY 9s EMGENT MA WETLAND A APPROXIMATE RIVERINE WETLAND BOUNDARY d V -(,,, ---,---NORMA DRIVE (GRAVEL ROAD) EM GENT MARSH LAND AREA 1 V 1 PROPOSED NEW CHANN POSED NCH EL Q4 MAG. 1979 D5 15G PG G54 SCALE 200 100 0 200 CONTOUR INTERVAL = I' ALL CONTOUR5 5HOWN ARE EXI5TING ALL SITE FEEDER DITCHES TO BE BACKFILLED AND LEVEL GRADED EMERGENT MARSH WETLAND AREA SITE BOUNDARY TOPOGRAPHIC HIGH POINTS TO BE LEVEL GRADED o? N .. ZO z V ? V n - V iC U - p p ? d u U Q? K A6- C) Wu w0 Q o (' 00 ° 0 o a?Zo 0 -u a/ 0 Lu g z ?< ° w 3>a ° 0 W (V U 0 ~ o aQ a q? O P V .? a ?U Noy q O Oz W? m ?a rn ° ©2005 Soil * Environmental Con5UItant5, PA. All rlght5 reserved. P RO PO 5 E D 5 I T E C O N D I T I 0 N 5* INDEX MAP SCALE o?"2 o .. p ooo? 40 20 0 40 r 2 CONTOUR INTERVAL i ALL CONTOURS 5110WN ARE EXISTING 0 ml 2 p ou Z Z 0 Q Q Wo z g (0 0 NORTH ",J oL q 99 ?Qzz o 000 w p (L Z U ? Z 0 tix EX15T1 NC 24 Ln Q CMP CULV <> ° INLE LEV. APPROXIMATE 91.40' o ? N RIVERINE m a WETLAND BOUNDARY a NOTE: STRUCTURE LOCATION, TYPE, AND p NUMBER ARE APPROXIMATE AND MAY BE MODIFIED BY ENGINEER AT TIME +? ° $ OF CONSTRUCTION. N Z g LEGEND z PROP05ED LOG J-HOOK (UH) RE5TORED t o CHANNEL CENTERLINE LOG CR055 ?g : VANE (LCV) Q) rA 0 s a © 2005 Sod b Environmental Con5ultant5, PA. All ricjht5 reserved. PROPOSED 5TREAM RE5TO RAT I 0 N LAYOUT I o ?? 3 6 i 0 ZO ? N Z - M El STATION BED INVERT E VAT N FACET STRUCTURE INVERT STRUCTURE TYPE 0+00 95.G 96.9 RIFFLE 0+03 95.9 9G.9 RUN 9G.0 LCV 0+10 95.5 9G.9 POOL 0+19 9G.3 9G.9 RIFFLE 0+74 9G.2 9G.8 RIFFLE 0+80 95.8 9G.8 RUN 0+88 95.4 9G.8 POOL 0+98 9G.2 9G.8 RIFFLE I + I G 9G.2 9G.8 RIFFLE 1+25 95.8 9G.8 RUN 95.9 LJH 1+34 95.4 9G.8 POOL 1+51 9G. I 9G.7 RIFFLE 1+72 9G. I 9G.7 RIFFLE 1+84 95.7 9G.7 RUN 1 +93 95.3 9G.7 POOL 2+05 9G.1 9G.7 RIFFLE 2+25 9G.0 9G.G RIFFLE 2+34 95.G 9G.G RUN 2+43 95.2 9G.G POOL 2+G1 9G.0 9G.G RIFFLE 2+73 9G.0 9G.G RIFFLE 105 z 95 Q W W 85 0+00 0+50 STATION I BED EVBA FACET STRUCTURE STRUCTURE 2+81 95.G 9G.G RUN 95.7 Lill 2+89 95.2 9G.G POOL 3+02 95.9 9G.5 RIFFLE 3+19 95.9 9G.5 RIFFLE 3+30 95.5 9G.5 RUN 3+35 95.1 9G.5 POOL 3+52 95.9 9G.5 RIFFLE 3+G5 95.9 9G.5 RIFFLE 3+77 95.4 9G.4 RUN 3+85 95.0 9G.4 POOL 3+9G 95.8 9G.4 RIFFLE 4+1 G 95.8 9G.4 RIFFLE 4+2G 95.4 9G.4 RUN 95.5 LJH 4+37 95.0 9G.4 POOL 4+55 95.7 9G.3 RIFFLE 4+G9 95.7 9G.3 RIFFLE 4+87 95.3 9G.3 RUN 4+9G 94.9 9G.3 POOL 5+15 95.7 9G.3 RIFFLE 5+37 95.G 9G.2 RIFFLE 5+45 95.2 9G.2 RUN STATION BED INVERT BKF ELEVATION FACET STRUCTURE INVERT STRUCTURE TYPE 5+54 94.8 9G.2 POOL 5+72 95.G 9G.2 RIFFLE 5+88 95.G 9G.2 RIFFLE G+01 95.2 9G.2 RUN 95.3 LJH G+1 1 94.7 9G. I POOL G+25 95.5 9G.1 RIFFLE G+41 95.5 9G.1 RIFFLE G+51 95.1 9G.1 RUN G+GO 94.7 9G.1 POOL G+74 95.5 9G.1 RIFFLE G+88 95.4 9G.0 RIFFLE 6+98 95.0 9G.0 RUN 7+OG 94.G 9G.0 POOL 7+21 95.4 9G.0 RIFFLE 7+35 95.4 9G.0 RIFFLE 7+45 95.0 9G.0 RUN 95.1 LJH 7+55 94.G 9G.0 POOL 7+GG 95.3 95.9 RIFFLE 7+82 95.3 95.9 RIFFLE 7+93 94.9 953 RUN 8+01 94.5 95.9 POOL 1+00 1+50 2+00 2+50 3+00 3+50 4+00 4+50 5+00 5+50 G+00 G+50 7+00 7+50 8+00 STATION - - - - PROPOSED BANKPULL PROPOSED THALWEG LCV = LOG CR055 VANE STRUCTURE LOCATION LJH = LOG J-HOOK 4"©2005 Sod *- Environmental Con5ultant5, PA. All rights reserved. PROPOSED STREAM LONGITU I NAL PROF11 F I O W H? m J ?} u o? Z zQ IL Q 0 W z ? N ? Z W W U Q-/ Z 0 Z p 0 0 Z U N Q () Q O is (L a? a a? V? N z p z ? a u a Apo Vj STATION BED INVERT BKF ELEVATION FACET STRUCTURE INVERT STRUCTURE 8+20 953 95.9 RIFFLE 8+39 95.2 95.8 RIFFLE 8+45 94.8 95.8 RUN 8+54 94.4 95.8 POOL 8+72 95.2 95.8 RIFFLE 8+90 95.2 95.8 RIFFLE 9+02 94.8 95.8 RUN 94.9 Uh 9+13 94.4 95.8 POOL 9+28 95.1 95.7 RIFFLE 9+46, 95.1 95.7 RIFFLE 9+52 94.7 95.7 RUN 9+60 94.3 95.7 POOL 9+7G 95.1 95.7 RIFFLE 9+92 95.1 95.7 RIFFLE 10+01 94.6 95.G RUN 10+10 94.2 95.G POOL 10+24 95.0 95.G RIFFLE 10+45 95.0 95.G RIFFLE 10+55 94.G 95.G RUN 94.7 Uh 10+GG 94.2 95.G POOL 10+85 94.9 95.5 RIFFLE 105 Z Q 95 Q LU J to 85 STATION BED INVERT BKF ELEVATION FACET 5TRUCTURE IN Vff T STRUCTURE TYPE 1 1+02 94.9 95.5 RIFFLE 1 1+14 94.5 95.5 RUN 1 1+23 94.1 95.5 POOL 1 1+40 94.9 95.5 RIFFLE I I +G3 94.8 95.4 RIFFLE 1 1+73 94.4 95.4 RUN 1 1+81 94.0 95.4 POOL 1 1+98 94.8 95.4 RIFFLE 12+18 94.8 95.4 RIFFLE 12+30 94.3 95.3 RUN 94.4 UH 12+40 93.9 95.3 POOL 12+53 94.7 95.3 RIFFLE 12+70 94.7 95.3 RIFFLE 12+79 94.3 95.3 RUN 12+88 93.9 95.3 POOL 13+03 94.G 95.2 RIFFLE 13+18 94.G 95.2 RIFFLE 13+27 94.2 95.2 RUN 13+35 93.8 95.2 POOL 13+47 94.G 95.2 RIFFLE 13+G4 94.G 95.2 RIFFLE STATION BED INVERT- BKF ELEVATION FACET STRUCTURE INVERT STRUCTURE TYPE 13+71 94.2 95.2 RUN 13+81 93.7 95.1 POOL 13+93 94.5 95.1 RIFFLE 14+10 94.5 95.1 RIFFLE 14+22 94.1 95.1 RUN 94.2 UH 14+30 93.7 95.1 POOL 14+41 94.5 95.1 RIFFLE 14+G4 94.4 95.0 RIFFLE 14+7G 94.0 95.0 RUN 14+84 93.6 95.0 POOL 15+04 94.4 95.0 RIFFLE 15+21 94.4 95.0 RIFFLE 15+33 93.9 94.9 RUN 15+41 93.5 94.9 POOL 15+55 94.3 94.9 RIFFLE 15+75 94.3 94.9 RIFFLE 15+82 93.9 94.9 RUN 94.0 UH 15+89 93.5 94.9 POOL I G+08 94.3 94.9 RIFFLE I G+23 94.2 94.8 RIFFLE I G+30 93.8 94.8 RUN 8+00 8+50 9+00 9+50 10+00 10+50 11+00 11+50 12+00 12+50 13+00 13+50 14+00 14+50 15+00 15+50 1 G+00 STATION - - - - PROPOSED DANKPULL LCV = LOG CK055 VANE Jam- PROPOSED THALWEG LJ11 =LOG J-f100K c STRUCTURE LOCATION © 2005 Soil * Environmental Con5Ultant5, PA. All rights reserved. PROP05ED STREAM LONGITUINAL PROFILE 11 Z O `? 3 om O= N zo- NZ - P a?? lu } o l J u? Q 0 oz 0 W IL J z 03 C) D W W U ~ IL/ Z 0 Z O 0 Q ° N r > c? 0 U-1 IL a? o V d 0 a? Q 8• MM „ a V° a ;tl N a d ?a ?e V1 ° o`? 3 z0?, Nz - °?;? nQ u STATION INVERT BED BKF FACET STRUCTURE STRUCTURE 16+38 93.4 94.8 POOL 16+51 94.2 94.8 RIFFLE 16+66 94.2 94.8 RIFFLE 16+75 93.8 94.8 RUN 16+82 93.4 94.8 POOL 16+98 94.1 94.7 RIFFLE 17+ 16 94.1 94.7 RIFFLE 17+26 93.7 94.7 RUN 93.8 UH 17+33 93.3 94.7 POOL 17+50 94.1 94.7 RIFFLE 17+67 94.0 94.6 RIFFLE 17+76 93.6 94.6 RUN 17+86 93.2 94.6 POOL 18+02 94.0 94.6 RIFFLE 18+21 94.0 94.6 RIFFLE 18+36 93.6 94.6 RUN 18+44 93.1 94.5 POOL 18+62 93.9 94.5 RIFFLE 18+82 93.9 94.5 RIFFLE 18+94 93.5 94.5 RUN 93.6 UH 19+03 93.1 94.5 POOL 105 95 Q W J W 85 IG+00 STATION INVERT BED 8KF1 FACET STRUCTURE STRUCTURE 19+22 93.8 94.4 RIFFLE 19+42 93.8 94.4 RIFFLE 19+53 93.4 94.4 RUN 19+60 93.0 94.4 POOL 19+78 93.8 94.4 RIFFLE 19+97 93.7 94.3 RIFFLE 20+09 93.3 94.3 RUN 20+19 92.9 94.3 POOL 20+36 93.7 94.3 RIFFLE 20+54 93.7 94.3 RIFFLE 20+66 93.3 94.3 RUN 20+75 92.8 94.2 POOL 20+89 93.6 94.2 RIFFLE 21+07 93.6 94.2 RIFFLE 21+15 93.2 94.2 RUN 93.3 LJH 21+23 92.8 94.2 POOL 21+41 93.6 94.2 RIFFLE 21+55 93.5 94.1 RIFFLE 21 +6 I 93.1 94.1 RUN 21+72 92.7 94.1 POOL 21+68 93.5 94.1 RIFFLE STATION BED INVERT BKF FACET STRUCTURE 5TRUCTURE 21+88 93.5 94.1 RIFFLE 22+02 93.5 94.1 RIFFLE 22+10 93.1 94.1 RUN 22+19 92.7 94.1 POOL 22+34 93.4 94.0 RIFFLE 22+46 93.4 94.0 RIFFLE 22+55 93.0 94.0 RUN 93.1 LCV 22+64 92.6 94.0 POOL 22+81 93.4 94.0 RIFFLE IG+50 17+00 17+50 18+00 18+50 19+00 19+50 20+00 20+50 21+00 21+50 22+00 2+50 23+00 STATION - - - - PROPOSED BANKFULL PROPOSED THALWEG LCV = LOG CROSS VANE LJH = LOG J-HOOK v STRUCTURE LOCATION 61©2005 Sod * Environmental Con5Ultant5, PA. All rights reserved. PROP05ED STREAM LONGITU I NAL PROFILE I ? W pU LU J z W u _ LL O Q z z ? W O W ^ (n OC y Q O _ Z OL (n D Z ? ° Z ? O O q l17 Q N Q o 0 / w (L a- ? a? a a= Ov V? 0.? N N r 0 z a' 0? a V1 Z Qj ° 0 o? L ZO N z - ;?nQa 6.15 DKF TYPICAL RIFFLE • BANKFULL CHANNEL WIDTH 6.15 FEET • RIFFLE CK055-5ECTION AREA 4.26 5QUAKE FEET • RIFFLE MAX DEPTH 0.85 FEET • RIFFLE MEAN DEPTH 0.69 FEET NON-RIVERINE ZONE V 0 CREATED WETLANDS, EXCAVATE TO DEPTH OF APPROX. 12°-18", DACKFILL WITH EXISTING SITE WETLAND SOILS 7.W DKF WETLAND SURFACE TO DE GRADED WITH MICRO-TOPOGRAPHIC VARIATION AS DETERMINED DY DESIGNER AT TIME Of CONSTRUCTION TYPICAL POOL • BANKFULL CHANNEL WIDTH 7.60 FEET • POOL CK055-5ECTION AREA 6.96 SQUARE FEET • POOL MAX DEPTH 1.65 FEET • POOL MEAN DEPTH 0.92 FEET BANKFULL ELEVATION NON-RIVERINE ZONE NEW FLOODPAIN * RIVERINEIWETIAND ZONE E FLOW 3 BANKFULL WIDTH PROPOSED `VERNAL POOL RE5TORED STREAM CHANNEL 2005 Sod * Environmental Con5Ultant5, PA. All rights reserved. TYPICAL RE5T0 RE D CHANNEL * FL00 D P LAI N C 8055-5 ECT I 0 N 5 Y? 0lu u u + N -J Z L W z Z= O WO ? F- Z Z U N QV = N UN 0 a - z LLJ O U ? 0 Lu ? Q UC) Q > 5 0 LL W (L d? a? a a V? N a? O z 4 a' 0 M g V1 ° 13ANKFULL STAGE FLOW-- 3-T% STREAM CHANNEL BED??f FOOTER ROCKS PROFILE CROSS SECTION ANE ARM N-Araur SCOUR POOL BANKFULL BENCH BASE FLOW WATER ELEVATION =1 . !=1-1 l l-i ANGLE-CUT END PROFILE VIEW • LIVE STAKES INSTALLED IN BANK WITH DEAD-BLOW HAMMER • 415 OF STAKE IN GROUND • BUDS ORIENTED UPWARDS • 3' CENTERS (APPROX.) • CUT EXPOSED END OF LIVE STAKE AFTER INSTALLATION IF DAMAGED DUE TO INSTALLATION (i.e. damaged bark, split ends, etc.) LIVE STAKE PLANTING DETAIL (NOT TO SCALE) LO( PLAN RIGHT BANK LOG J-HOOK * LOG CRO55 VANE DETAIL (NOT TO SCALE) BANKFULL BENCH COIR MATTING ?I II .I:i1 ? Ili-1 l ? BASE FLOW - WATER ELEVATION 12„ ECO-STAG I-Iii-! I L1 I I-I I' 24" ECO-STAKED PROFILE VIEW 2? PLAN rKUNI VIM ECO-5TAKEO 6 3 0 o ZO " O N .. un Z - ?'N N y p ? o m Q V u t E FABRJC Wo a d C OW U L Z Z W 0 4 N ?0 l 0 ? N U. z DR LOG ? ( 0 ? 0 u ? z LL a N z : Q3 ? o ? U • TRENCHED TOP OF MATTING TO A DEPTH OF AT LEAST 12', STAKE • MINIMUM 2' CENTERS ALONG BOTTOM • 12' ECO-5TAKE5(D INSTALLED IN BANK OR STAPLE IN PLACE, 4 BACKFILL • MINIMUM P OVERLAP AT JOINING FLUSH WITH COIR MATTING ABOVE TO DESIGN GRADE SECTIONS OF COIR MATTING BOTTOM ROW OF 24" ECO-STAKE50 • MINIMUM 24" ECO-STAKES- • ECO-STAKES® SPACED AT INSTALLED ALONG TOE OF MATTING MAXIMUM 3' CENTERS (APPROX.) (Intercept between water surface and bank) COIR MATTING DETAIL NOTES: (NOT TO SCALE) MATTING MUST BE PLACED OVER EVERY EXCAVATED CHANNEL SECTION AT THE END OF EACH WORKDAY AND BEFORE THE PUMP 15 TURNED OFF. BRIG LOG a? a? A a ?y n i1 N g x ?a ?e d1 ®2005 Soil * Environmental Con5Uitant5, PA. All rights reserved. TYPICAL 5TRU CTU RE, LIVE STAKE, * COI R MATTING DETAI L5 Z C1 3 3 Z0 Nz - 0 0 ? U? S NOTES: 0) U) SPECIAL STILLING BA51N I . EXCAVATION SHALL BE PERFORMED IN ONLY DRY SECTIONS OF CHANNEL. 2. IMPERVIOUS DIKES SHOULD BE USED TO 150LATE WORK AREAS FROM STREAM FLOW. ?p EXISTING GROUND 3. THE CONTRACTOR SHALL NOT DISTURB MORE AREA THAN CAN BE STABILIZED IN Va _ ONE WORKING DAY. MATTING MUST BE PLACED OVER EVERY EXCAVATED CHANNEL _,} 0 ? SECTION AT THE END OF EVERY WORKDAY AND BEFORE THE PUMP IS TURNED OFF. °u 2 FILTER FABRIC SPECIAL STILLING BASIN ? J 15-20 FT -{ (AS DIRECTED AT THE 4. PUMP AROUND SHOULD BE ABLE TO CONVEY MINIMUM OF I CFS PER MIZ OF Z Z< Q FOR DRAINAGE TEMPORARY SPLASH PA F W DRAINAGE AREA TO SITE UNLESS OTHERWI5E STATED IN SPECIFICATIONS. Q Z= (NON-WOVEN) TIME OF CONSTRUCTION) W O Z (SEE DETAIL, LOCATE v AS DIRECTED AT THE DEWATERING PUMP SEQUENCE OF CONSTRUCTION FOR TYPICAL PUMP AROUND SPECIAL STILLING BASIN TIME OF CONSTRUCTION) n ?U (NOT TO SCALE) I . INSTALL SPECIAL STILLING BASINS AT THE DOWNSTREAM END OF THE DESIGNATED O 0 GRAVEL CHECK TEMPORA Y PROJECT WORKING AREA. DAM AT CHANNEL . THE CONTRACTOR WILL INSTALL THE PUMP AROUND PUMP AND THE TEMPORARY W LU U Z TERMINUS FLEXIBLE PIPING THAT WILL CONVEY THE BASE FLOW FROM UPSTREAM OF THE WORK SITE TO THE a-/ Z O HOSE 2E SPECIAL STILLLING BASIN. O WORKING 3. INSTALL UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING OPERATIONS FOR STREAM 0 U SANDBAGl5TONE--,,,,.., BASEFLOW AREA DIVERSION. N ? Z z0 4. INSTALL THE DOWNSTREAM IMPERVIOUS DIKE AND PUMPING APPARATUS IF NEEDED TO WORKING TEMPORARY PIPING DEWATER THE ENTRAPPED AREA. THE PUMP AND HOSE FOR THIS PURPOSE SHALL BE OF rj < (f) AREA SUFFICIENT SIZE TO DEWATER THE WORK AREA. THIS WATER WILL ALSO FLOW INTO A Q - SPECIAL STILLING BASIN. Es ('Z 5. THE CONTRACTOR WILL PERFORM STREAM RESTORATION WORK IN ACCORDANCE WITH W FILTER FABRIC FOR DRAINAGE IMPERVIOUS SHEET THE PLAN AND FOLLOWING THE GENERAL CONSTRUCTION SEQUENCE. ? o (NON-WOVEN) IMPERVIOUS DIKE G. THE CONTRACTOR WILL EXCAVATE ANY ACCUMULATED SEDIMENT AND DEWATER BEFORE (LOCATE AS REMOVAL OF THE IMPERVIOUS DIKE. REMOVE IMPERVIOUS DIKES, PUMPS, AND = PUMP AROUND PUMP F W DIRECTED AT TEMPORARY FLEXIBLE HOSE/PIPING STARTING WITH THE DOWNSTREAM DIKE FIRST. IMPERVIOUS DIKE THE TIME OF 7. ONCE THE WORKING AREA IS COMPLETED, REMOVE THE STILLING BASINS AND STABILIZE (NOT TO SCALE) CONSTRUCTION) DISTURBED AREAS AS SHOWN ON PLANS. a See Cofferdam Detail for Specific Construction Requirements of Temporary Cofferdam (Impervious Dike) S ° a TYPICAL PUMP AROUND OPERATION (NOT TO SCALE) 0 v TEMPORARY SEEDING SPECIFICATIONS V a ' D a N General Seeding Mulch nS' Areas where no substantial or significant progress is made for Mulching Shall consist of small gram straw applied at a rate iy MO z Seeding Dates Seeding Speaes Rate (Ibslacre) of 70 Ib5.11000 ift. Mulched areas shall be mechanically more than 15 days should be temporarily seeded as o follows. All areas should be seeded, mulched, and tacked. May I - Aug. 15 German Millet 40 tacked in place (or other approved tacking method). ty Incidental grading shall not constitute substantial or significant Aug. 15 - May I Rye (gram) GO No asphalt shall be used for tacking. Use jute, excelsior progress in construction activity. Seeding and mulching shall matting or similar material to cover exposed areas of p 79 be done immediately following construction. All disturbed concentrated flow. a areas shall be dressed to a depth of 8 mches. The top ..yy e 3 inches shall be pulverized to provide a uniform seedbed. Soil Amendments Maintenance ?q follow recommendations of sod tests or apply 2,000 Ibs/acre Inspect and repair mulch frequently. Refertilize and reseed as by a'S ground agricultural limestone and 750 Ibslacre 10-10-10 required to maintain vigorous temporary vegetative cover c fertilizer. during construction. 0 m 8 a ER051ON CONTROL DETAILS I 82005 Sod Environmental Consultants, PA. All nght5 reserved. 0H2!-P, 0 o r ZONN m U BE MULCH: (3") AVG. THICKNESS r-_, PREPARED ADMIXTURE BACKFILL OR NATIVE SOIL TAMPED ADMIXTURE BACKFILL DECIDUOUS TREE PLANTING - CONTAINERIZED (NOT TO SCALE) I 2 3 Open planting Place bare-root Close hole With hole with seedling in hole - Shovel or Auger- Shovel or Auger root collar at no air space surface around roots BARE-ROOT SEEDLING PLANTING DETAIL (NOT TO SCALE) of ©2005 Sod * Environmental Consultants, PA. All TII WOODEN STA MULCH 80mm?3") AVG. THICKNESS. NON-BIODEGRADABLE MATERIAL SHALL BE TOTALLY REMOVED. TOPSOIL MIXTURE 6ACKFDI ADMIXTURE SHRUB PLANTING - CONTAINERIZED (NOT TO 5CALE) TREE SHELTER W/ BASE APPROX. I" INTO GROUND TREE SHELTER DETAIL TO BE INSTALLED ON ALL BARE-ROOT AND CONTAINERIZED PLANTED TREES (NOT TO 5CALE) AST PREVE3IJfi5 NATURRAL SWAYING CROWN OF ROOT BALL SHALL BE SET SLIGHTLY ABOVE GRADE. MULCH: (3") AVG. THICKNESS STAKES (3) p qT TO ?? B REMOVE TSPES3 OF BURIAP.ALL SHALL BE CUT. PREPARED ADMIXTURE BACKFILL OR NATIVE SOIL TAMPED ADMIXTURE BACKFILL DECIDUOUS TREE PLANTING - BALL * BURLAP (NOT TO 5CALE) reserved. PLANTING SCHEDULE * PLANTING DETAILS K ? J 10 y I ~? 1 N U -- r LU p Q 2 Z =2 / ?^ V LU O Z LIL. O tZ ? ED (L LU IL/ z W J 0 CLI C) Z U p L N U r ? < N I ? ? Z : D F z ° Q y o F J CL a? a V? a? O z a? Wa d? a M 8 Q ? V1 NORTH SCALE 40 20 0 40 CONTOUR INTERVAL = I' ALL CONTOURS SHOWN ARE EXISTING NOTE: STRUCTURE LOCATION, TYPE, AND NUMBER ARE APPROXIMATE AND M BE MODIFIED BY ENGINEER AT E OF CONSTRUCTION. APPR MATE RIVERINE WETLAND BOUNDARY g9 LEGEND LOG J-HOOK (L1H) LOG CROSS VANE (LCV) TIE STORED CHANNEL TO EXI5TING 610 2005 Sod * Environmental Consultants, PA. All U/5 INVERT ELEV. 95.58 reserved. PROP05ED 5TREAM RESTORATION LAYOUT o? o ?i R v zoo uZcO I ou z VU Q zz w0 Z l 0 ?J f lY. V 0 0 ?- 0 W W U CL- IVZ goo uj gn ?t ° N (L a? ?Q g vio wiA aP ov VA aH a i?l N xSe9 6 Ox a• w? u a o? '? o APPENDIX D Site Rainfall Data kr) C) 0 .b N ? N Q •° o c? 00 0 0 ?z O U W m 000 2 O O U Q w w W U > -t O Lo N , 00 O W Q - - o 0 w w L L w w 0 O 0 g ? o w > M 00 O 0 Q In r Lq O m r o 6 C? Z > M 0 00 - Lr) r- U Q L r O x w c ? r- ? 0 0 N .a U `C 3 > U L N , U) 0 2 m V a? v s. M 0 O M bA CC a Watts Farm Restoration is S&EC Project: 8099.1) 1 is • erty. Appendix A April 25, 2005 Photo 1-Existing stream immediately downstream of road crossing, note canal to the Little River in background. Photo 2-Existing road crossing (24" diameter CCP) looking upstream onto the prop- Watts Farm Restoration • S&EC Project: 8099.13 1 Photo 9-Existing condition of restoration reach looking downstream (north). Note equipment shed and residences in background. (looking west). Appendix A April 25, 2005 Photo 10-Existing drainage ditch discharging to upstream end of restoration reach Watts Farm Restoration is S&EC Project: 8099.1) 1 • ter CCP). • Appendix A April 25, 2005 Photo 3-Upstream end of existing road crossing, near northern end of site (24" diame- Photo 4-Existing stream (near downstream end) looking upstream (south) towards woodline. Note equipment shed on right side of photo. Watts Farm Restoration Appendix A is S&EC Project: 8099.D1 April 25, 2005 t C. 1, to • • Photo 5-Existing side drainage ditch near north end of side parcel looking west towards woodline. 3 Photo 6-Existing property looking east towards woodline. Note Infinities Groundwa- ter Gauge in center of photo. Watts Farm Restoration • S&EC Project: 8099.131 0 Appendix A April 25, 2005 0 Photo 8-Existing stream (upstream end) looking upstream (south) towards woodline. Photo 7-Existing property looking south (upstream) towards woodline. • I" • • Watts Farm Restoration S&EC Project: 8099.D1 Appendix A April 25, 2005 6 (looking east). • 0 Watts Farm Restoration S&EC Project: 8099.D1 Photo 1-Reference reach cross-section #1, looking upstream. FJ Appendix B April 25, 2005 Photo 2-Reference reach cross-section #2, looking upstream. Watts Farm Restoration S&EC Project: 8099.131 • • Appendix B April 25, 2005 Photo 3-Riverine Reference Wetland (Gauge 1) Photo 4-Riverine Reference Wetland (Gauge 2) Watts Farm Restoration • S&EC Project: 8099.D1 • E Appendix B April 25, 2005 Photo 5-Non-riverine Reference Wetland (Gauge 1) Photo 6-Non-riverine Reference Wetland (Gauge 2) APPENDIX C Preliminary Site Groundwater Data 3.00 y 2.50 y z C 2.00 c? D 1.50 C c? 1.00 0.50 0.00 Watts Stream and Wetland Restoration Site Site Rainfall Gauge Data JanuaOry 2004 to June 2004 v Q 0 0 O Q 0 L6 Ir- 0 N IT IT NT o U- LL N C? 0 N LL O 0 LL N 0 0 4 r- 0 O Ir- ? ? 0 0 cu a M Q u N 11, 0 Q O 0 Q Ir- 000 a a m N 0 ? N N O 0 c? 0 cu N 0 0 N 0 O o a c c ?- N Day of Monitoring Period 3.00 2.50 N d r V ? 2.00 n 1.50 C 1.00 t? D 0.50 0.00 Watts Stream and Wetland Restoration Site Site Rainfall Gauge Data July 2004 to December 2004 IRT qq Nt 'It Iq qT qq Iq IT qq qq Iq ? It Iq Iq ? ? It It ? ? ? qq O O o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I I I I I 1 I I I I 1 I I I I I 1 1 I 1 1 I I I 1 =3 :3 75 CD :3 ::3 :3 4) (1) (1) m a) 0 0 0 0 0 0 0 0 00 Lh N d) 1 Q Q Q fn (n (n (D CO I ? r I Z Z Z Z N N N O (0 N O (0 M O 4 r ?- N N CO r' N N N r Day of Monitoring Period APPENDIX E Stream Morphological Characteristics Data Table Watts Farm Restoration S&EC Project No. 8099.D1 a O -6 . t+d N W XS 1 Existing O Oround Points ? BanWili Indicators Wbkf - 5.4 Dbkf - .8 ? Water Surface Points Abkf - 4.2 Horizontal Distance (ft) Appendix F April 25, 2005 Existing Conditions Stream Data Pagel of 4 0 10 20 30 40 APPENDIX F Existing Conditions Stream Data Warm Restoration S&EC Project No. 8099.131 AppendK April 25, 2005 Radius of Curvature ft 40 45 50 13.32 15.59 18.9 3.46 17.12 43.84 Belt Width ft 40 50 60 22.48 34.35 43.24 78.76 78.76 78.76 Dimensi onless Rat ios Variable Min Avg Max Min Avg Max Min Avg Max Lm / W bkf 111.8568 134.2282 156.5996 8.44177 8.9443 9.44937 4.10495 12.23349 28.40566 Rc / W bkf 8.94855 10.06711 11.18568 1.68608 1.97342 2.39241 0.40802 2.01887 5.16981 Wblt / Wbkf MWR 8.94855 11.18568 13.42282 2.84557 4.3481 5.47342 9.28774 9.28774 9.28774 MOW % laa, Values EXISTING PROPOSED REFERENCE REACH Variable Min Avg Max Min Avg Max Min Avg Max S riffle ft/ft 0.0016 0.00217 0.00272 0.0001 0.0014 0.00364 0.0001 0.0014 0.00364 S pool ft/ft 0 0.00014 0.00043 0 0.00047 0.00127 0 0.00047 0.00127 P - P ft 0 64.51 332.07 36.23 49.98 73.21 36.23 49.98 73.21 P length ft 0 67.13 332.07 8.22 29.94 53.41 8.22 29.94 53.41 Dmax riffle ft 1.36 1.59 1.73 2.71 2.94 3.17 2.71 2.94 3.17 Dmax pool ft 1.54 1.66 1.76 3.06 3.2 3.58 3.06 3.2 3.58 Dimesionless Ratios Variable Min Avg Max Min Avg Max Min Avg Max S riffle / S bkf ft/ft 0.73733 1 1.25346 0.08571 1 2.6 0.08571 1 2.6 S pool / S bkf ft/ft 0 0.06452 0.19816 0 0.33571 0.90714 0 0.33571 0.90714 P - P / W bkf ft 0 14.43177 74.28859 4.27241 5.89387 8.63325 4.27241 5.89387 8.63325 P length / W bkf ft 0 15.0179 74.28859 0.96934 3.53066 6.29835 0.96934 3.53066 6.29835 Dmax riffle / D bkf ft 1.41667 1.65625 1.80208 2.82292 3.0625 3.30208 2.82292 3.0625 3.30208 Dmax pool / D bkf ft 1.60417 1.72917 1.83333 3.1875 3.33333 3.72917 3.1875 3.33333 3.72917 Bankfull Slo a ft/ft 0.00217 0.0014 0.0014 Table 1: Existing, Reference and Proposed Stream Morphological Characteristics Page 2 of 3 Watts Farm Restoration S&EC Project No. 8099.1) 1 XS 2 EXISTING 0 Oround Points i BanWull Indicators V Water Surface Points Ybkf = 4.3 Dbkf - 9 Abkf - 4.2 C O }+ ttf N W Horizontal Distance (ft) Appendix F April 25, 2005 Existing Conditions Stream Data Page 2 of 4 0 5 10 15 20 25 30 WaW 1 arm Restoration S&EC Project No. 8099.D1 Appendix L April 25, 2005 ( p ?1 * y 77--'T w a a #"? 5 r? Values EXISTING E6 P ROPOSED C6 REFE RENCE REACH E6 Variable Min Avg Max Min Av Max Min Avg Max Flood rove Width ft 8.63 19.75 28.15 26.7 27.48 28.2 42.99 43.55 44.11 Riffle Area S ft 4.16 4.24 4.31 4.02 4.23 4.49 8.06 8.12 8.18 Max Riffle Depth ft 1.36 1.59 1.73 2.71 2.94 3.17 2.71 2.94 3.17 Mean Riffle Depth ft 0.79 0.96 1.04 .57 0.58 0.6 0.94 0.96 0.97 Riffle Width ft 4.08 4.47 5.35 7.06 7.29 7.48 8.4 8.48 8.56 Pool Area S ft 5.1 6.0 7.2 13.95 13.95 13.95 13.95 13.95 13.95 Max Pool Depth ft 1.54 1.66 1.76 3.06 3.2 3.58 3.06 3.2 3.58 Mean Pool Depth ft 1.04 1.12 1.13 0.98 0.98 0.98 0.98 0.98 0.98 Pool Width ft 4.89 5.34 6.42 14.28 14.28 14.28 14.28 14.28 14.28 Dimensi onless Rat ios Variable Min Avg Max Min Avg Max Min Avg Max Wf a / Wbkf 1.93 4.41834 6.29754 3.78 3.76 3.77 5.07 5.13561 5.20165 Pool Area / Abkf 1.23 1.42 1.67 1.71798 1.71798 1.71798 1.71798 1.71798 1.71798 Max Pool Depth / Dbkf 1.60417 1.72917 1.83333 3.1875 3.33333 3.72917 3.1875 3.33333 3.72917 Mean Pool Depth / Dbkf 1.09 1.17 1.32 11.97 12.52 13 1.02083 1.02083 1.02083 Pool Width / Wbkf 1.19 1.19 1.20 1.68396 1.68396 1.68396 1.68396 1.68396 1.68396 Values EXISTING PROPOSED REFERENCE REACH Variable Min Av Max Min Avg Max Min Avg Max Sinuosity 1.1 1.52 1.27 Meander Wavelength ft 500 600 700 66.69 70.66 74.65 34.81 103.74 240.88 Table 1: Existing, Reference and Proposed Stream Morphological Characteristics Page 1 of 3 t,3o £ QSLd RJU(I uIL'a.ils suol .4ipuoa ui;s[ga (4) a*uels!Q MuMPOH oe 9z oz 9? of S o os rn sy o' L6 9002 `SZ I!jdV 1(1'6608 'ON 13afoid DHWS xipuaddV uoiiuioIsag unu3 s:RuAk slulod s3Qyn8 J048M ? S 1831pu11lr1Wus8 ? siulod punao 0 l5ulls!x3 E SX t'3o ti 00Ud u,JuQ luvails suogipuoD u[lsixg (4) QOUBIS!(3 IB4uozuOH 0£ SZ oz St of S o rn ctD o? SOOZ `SZ iFdV IQ'6608 *ON IOafOJd D9WS ,3 xipuoddV uoiTLIioISag uuB3 SUBA e't - inqu L - 4"qa Z'k - INVA $WIOd aasyinS japM ? ajop3IPW limues ? $luWd PuncuO 0 E)NIISIX3 tr SX APPENDIX G Reference Reach Stream Data Watts Farm Restoration S&EC Project No. 8099.D1 c O tLi N W 0 Ground Points 1lbkf - 8.5 Reference XS 1 ? SanldUll Indicators Dbkf - 1 ? Water Surface Points Abkf - 8.2 Horizontal Distance (ft) Reference Reach Stream Data Page 1 of 2 Appendix G April 25, 2005 -9 -4 0 4 9 13 17 22 28 31 35 39 44 48 Watts Farm Restoration S&EC Project No. 8099.1) 1 C O t1) N n 0 Oround Points Abkf - 8.5 Reference XS 2 ? BankNll indicators Dbkf - .9 ? Water Surface Points Abkf - 8 Horizontal Distance (ft) Reference Reach Stream Data Page 2 of 2 Appendix G April 25, 2005 -9 -4 0 4 9 13 18 22 27 31 36 40 45 49 APPENDIX H Proposed Conditions Stream Data Watts Farm Restoration S&EC Project No. 8099.D1 Proposed Typical Riffle 0 Oround Points ? BanldUll Indicators ? Water Surrace Points Ybkf - 7.2 Dbkf - .6 Abkf - 4.2 1 ^ 1 C O ttY tU W Horizontal Distance (ft) Appendix H April 25, 2005 Proposed Conditions Stream Data Page 1 of 2 0 5 10 15 20 25 30 Watts Farm Restoration S&EC Project No. 8099.D1 Proposed Typical Pool o Oround Points ? BanldUll Indicators ? Water Surface Points Wbkf - 11.2 Dbkf - .4 Abkf - 18.6 C O it tfY a a> w Horizontal Distance (ft) Appendix H April 25, 2005 Proposed Conditions Stream Data Page 2 of 2 0 10 20 30 40 APPENDIX I State Historic Preservation Office (SHPO) Letter sue. sr? ? : _ j? D MAR 1 4 2005 North Carolina Department of Cultural Resources State Historic Preservation Office Peter B. Sandbeck, Administrator Michael F. Easley, Governor Office of Archives and IEstory Lisbeth C. Evans, Secretary Division of Historical Resources Jeffrey J. Crow, Deputy Secretary David Brook, Director March 9, 2005 Jessica Regan Soil & Environmental Consultants, PA 11010 Raven Ridge Road Raleigh, NC 27614 Re: Watts Farm Restoration Site, Perquimans County, ER 05-0373 Dear Ms. Regan: Thank you for your letter of February 15, 2005, concerning the above project. We have conducted a review of the proposed undertaking and are aware of no historic resources which would be affected by the project. Therefore, we have no comment on the undertaking 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, contact Renee Gledhill-Earley, environmental review coordinator, at 919/733-4763. In all future communication concerning this project, please cite the above referenced tracking number. Sincerely, eter B. Sandbeck Location Mailing Address Telephone/Fax ADMINISTRATION 507 N. Blount Street, Raleigh NC 4617 Mad Service Center, Raleigh NC 27699-4617 (919)733-4763/733-8653 RESTORATION 515 N. Blount Street, Raleigh NC 4617 Mad Service Center, Raleigh NC 27699-4617 (919)733-6547/715-4801 SURVEY dr PLANNING 515 N. Blount Street, Raleigh, NC 4617 Mail Service Center, Raleigh NC 27699-4617 (919)733-6545/715-4801 APPENDIX J Perquimans County Floodplain Coordination Letter Soil & Environmental Consultants, PA 11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: (919) 846-5900 • Fax: (919) 846-9467 www.SandEC.com June 20, 2005 S&EC Project No. 8099.D1 Perquimans County Planning Department P.O. Box 45 Hertford, NC 27944 Attn: Mr. William Ethridge & Mr. Zeke Jackson Reference: Watts Stream & Wetland Restoration Project Minor Grading w/in 100-yr Floodplain Perquimans County, NC Dear Sirs: As discussed in our telephone conversations, Soil & Environmental Consultants, PA is currently developing a Stream and Wetland Restoration plan for the Watts Property in Perquimans County. This North Carolina Ecosystem Enhancement Program (NCEEP) funded project consisting of approximately 48 acres is shown on the enclosed location map. Proposed restoration efforts will include restoring an agricultural ditch to a naturally meandering stream. Plans also call for minor floodplain grading and the filling of agricultural drainage ditches to restore wetland hydrology throughout the property. The entire site will be planted with appropriate riparian and wetland vegetative species. This site is located within the 100-year floodplain as determined by the North Carolina Floodplain Mapping Program (see enclosed floodplain map). Please advise what additional information the County will require to approve the construction of this project within the 100-year floodplain. If the County approves these restoration efforts without Page 1 of 2 Watts Stream & Wetland Restoration June 20, 2005 Soil & Environmental Consultants, PA Project No. 8099.1) 1 additional information, please provide a written response indicating approval for use in project permitting. We thank you for your assistance in this matter and look forward to the successful completion of this project. Please contact me if you have any questions or comments. SOIL & ENVIRONMENTAL CONSULTANTS, PA Sincerely, Rebecca S. Wargo, EIT Project Engineer Attachments: 1. Project Location Map 2. USGS Vicinity Map 3. Floodplain Map Cc: Tracey Morris - NCEEP Salam Murtada, NCEEP Page 2of2 0 • t- N • Pro,cct r: Scale: - 8099.D I I ': 2.4 Wes Figure I -Vicinity Map Pro,ect Date: Mgr.: M 02-21-05 Watts Farm Percquiman5 County, NC Soil & Environmental Con: 11010 Raven Ridge Rd.- Raleigh, (919) 846-5900 • (919) 846- Web Page: www.SandEC. 27614 PA L' 0 • z 111 .. ?`. IA I t ^ 1 Q ?' y ;il ,?,,,,? ' ,; ' ? _ For. " ? F.: Y r1? Y I / ,r _ , w ?-r,_ . =`ova.. '?•??7'' ? (L }il/s` ? ? ,w? ? ,r? , /1 . SYI t \rt V.. r t Site Boundary - Watershed Boundary ale: ' F) ure 2 - USGS 9 4000 Vrrqjczt Datc: .21 05 Nuconton Quad Soil & Environmental Consultants PA . , Watts Farm 11010 Raven Ridge Rd. - Raleigh, NC 27614 Perqulmans County NC (919) 846-5900 • (919) 846-9467 , Web Page: www.SandEC.com E • iviap output Page 1 of 1 III Ar% tin 1n1 nl----.T r Office Use Only: Form Version October 2001 20051354 USACE Action ID No. DWQ No. If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than leaving the space blank. 1. Processing Check all of the approval(s) requested for this project: ® Section 404 Permit ? Section 10 Permit ® 401 Water Quality Certification ? Riparian or Watershed Buffer Rules 2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 27 _ 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 Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (see section VIII - Mitigation), check here: ? (((?? II. Applicant Information ?v D Q 1. Owner/Applicant Information JUL 1 9 2005 Name: NC Ecosystem Enhancement Program DENR. WATER QUALITY Mailing Address: 1652 Mail Service Center Raleigh, NC 27699-1 CANNAND e0RIMATERBRAKH Telephone Number: 919-715-1157 Fax Number: 919-715-2219 E-mail Address: salam.murtada(4jnemail.net 2. Agent 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: Company Affiliation: Mailing Address: Telephone Number: E-mail Address: Fax Number: Page 5 of 12 111. 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: Watts Property Stream and Wetland Restoration Plan 2. T.I.P. Project Number or State Project Number (NCDOT Only): 3. Property Identification Number (Tax PIN): _ 4. Location County: Perquimans Nearest Town: Town of Hertford Subdivision name (include phase/lot number): Directions to site (include road numbers, landmarks, etc.): The site is located immediately adjacent to Norma Drive near its intersection with Little River Shore Road (SR 1326). See attached Site Location Hap. 5. Site coordinates, if available (UTM or Lat/Long): (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Describe the existing land use or condition of the site at the time of this application: Agricultural land (soy beans production). 7. Property size (acres): 44 acres 8. Nearest body of water (stream/river/sound/ocean/lake): Little River 9. River Basin: Pasquotank (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/.) 10. Describe the purpose of the proposed work: Stream restoration project 11. List the type of equipment to be used to construct the project: Track Hoes, Page 6 of 12 12. Describe the land use in the vicinity of this project: agricultural, timber operation, rural residential with some commercial and industrial facilities. 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. According to Ms. Tracy Wheeler (USACE), the action number for the wetland will be provided in the near future. 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: None 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. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must 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. Wetland Impacts Wetland Impact Site Number (indicate on ma) Type of Impact* Area of Impact (acres) Located within 100-year Floodplain** (yes/no) Distance to Nearest Stream (linear feet) Type of Wetland*** List eacii impact separately and identity temporary impacts. impacts include, but are not limited to: mechanized clearing, grading, till, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FF,MA Map Service Center at 1-800-358-9616, or online at http://www.fema..gov. Page 7 of 12 *** List a wetland type that best describes wetland to be impacted (e.g., fresh water/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) List the total acreage (estimated) of existing wetlands on the property: 44 acres of prior-created wetland. Total area of wetland impact proposed: 44 acres 2. Stream Impacts, including all intermittent and perennial streams: None Stream Impact Site Number (indicate on ma) Type of Impact* Length of Impact (linear feet) Stream Name** Average Width of Stream Before Impact Perennial or Intermittent? (please secify) See site Restoration 2,200 Watts Property stream 6-10 feet Perennial List each impact separately and identity temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditch ing/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at www.uses.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.coin, www.mapquest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 2,200 LF 3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any other Water of the U.S. Open Water Impact Area of Name of Waterbody Type of Waterbody Site Number Type of Impact* Impact (if applicable) (lake, pond, estuary, sound, (indicate on ma) (acres) bay, ocean, etc.) See site Restoration 44 n/a Prior-created, agricultural List eacn impact separately and identity temporary impacts. Impacts include, but are not limited to: till, excavation, dredging, flooding, drainage, bulkheads, etc. 4. Pond Creation (N/A) 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.): Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Size of watershed draining to pond: Expected pond surface area: Page 8 of 12 r 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. This project involves the restoration of 2,200 linear feet stream, restoration of approximately 4 acres of riverine wetlands and the restoration of approximately 40 acres of non-riverine wetlands. Due to agricultural activities, the existing stream has been channelized and incised causing the existing wetland to be converted to non-wetland area for agricultural use (soy beans production). The goal of the project is to restore the wetland to its pre-existing conditions. VIII. Mitigation DWQ - In accordance with 15A NCAC 211 .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. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, 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 NCWRP 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/ncwettands/strmgide.htm1. 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) Page 9 of 12 r 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. Please see the existing site layout and the proposed grading and wetland planting plans attached with the PCN application. 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that you would like to pay into the NCWRP. Please note that payment into the NCWRP must be reviewed and approved before it can be used to satisfy mitigation requirements. Applicants will be notified early in the review process by the 401/Wetlands Unit if payment into the NCWRP is available as an option. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index. Nip. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): Amount of buffer mitigation requested (square feet): Amount of Riparian wetland mitigation requested (acres): Amount of Non-riparian wetland mitigation requested (acres): Amount of Coastal wetland mitigation requested (acres): IX. Environmental Documentation (DWQ Only) Does the project involve an expenditure of public funds or the use of public (federal/state/local) land? Yes ® No ? 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)? 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 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 (DWQ Only) 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 Page 10 of 12 r 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. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Nteuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify- )? Yes ? No ® If you answered "yes", provide the following information: 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 0 2 1.5 0 Total 0 * Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone i. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. XI. Stormwater (DWQ Only) Describe impervious acreage (both 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. Not applicable to this project XII. Sewage Disposal (DWQ Only) 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. The project will not involve sewage disposal XIII. Violations (DWQ Only) Is this site in violation of DWQ Wetland Rules (15A NCAC 211.0500) or any Buffer Rules? Yes ? No Page 11 of 12 Is this an after-the-fact permit application? Yes ? No XIV. 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). Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 12 of 12 Watts Stream and Wetland Restoration Site Monitoring Gauge Data Comparison July 2004 to December 2004 0 -5 -10 = ? -15 I L N -20 o -25 o ? s ; -30 0 m d -35 G ? -40 -45 O o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 rn m o Q Q Q 6 a a a a a) a) 0 0 Q w N w w a a) 0 0 0 >>>> 0 0 0 0 (1) 0 0 z z z z o 0 0 N N U') N O O N O O M N T- N O r 4 CO N N N O (0 r (V ?- Day of Monitoring Period ?- W1 -- W2 -x W3 )K W4 W5 --e- W6 r 0 -5 N r ? -10 ? -15 n N -20 _ -25 0 -30 Q _ 0 -35 %Mow -40 -45 Watts Stream and Wetland Restoration Site Monitoring Gauge Data Comparison January 2004 to June 2004 i Ak- i I I I I I 11 I i i I i I I 0 0 0 r co V) T- 0 CIO N 0 ICU N It It 0 LO N 00 L 0000 L L L L 00 L L LL L 2 L L Q Q Q cb 4 N 00 U r' r. ? N co U') e- Day of Monitoring Period 0 0 0 0 0 0 0 0 0 0 L L ), >, ?, ?, C C C C N N N N N I-?W1 ?-W2?W3--W4 W5+W6! NOTES: 1. TOPOGRAPHIC DATA DEVELOPED BY LIMITED ENGINEERING SURVEY PERFORMED BY SPEC USING TOTAL STATION. 2. ALL CONTOURS ARE APPROXIMATE AND BASED ON ASSUMED ELEVATION OF 100.00. 3. THIS IS NOT A BOUNDARY SURVEY AND IS NOT FOR RECORDATION, CONVEYANCE, OR SALES. EXISTING AGRICULTURAL STORAGE SHED EXISTING FEEDER DITCHES LEGEND 0 KG0 SITE RAIN GAUGE 517E GROUND WATER GAUGE / CHANNEL OR DITCH PLOW / DIRECTION PHOTOGRAPH NUMBER (SEE PHOTOS APPENDIX) ? EXISTING CULVERT PIPE IN DRAINAGE NETWORK UTILITY POLES EXPECTED LINES UTILITY EASEMENT Q0 Pa;"fAcE Pz MAG. 1979 NORMA DRIVE DB 156 PG 654 (GRAVEL ROAD) 99 ?? 5CALE o99 ®ay w- I ? A4 ` 200 100 0 200 CONTOUR INTERVAL = I' ALL CONTOURS SHOWN ARE EXI5TING EXISTING W-2 RG0CHANNEL A) ®e EXISTING FEEDER DITCHES O y f °? 9 ?*s 99 ?i 6 g9 O , W' w- ? O ? V, SITE BOUNDARY EXISTING CULVERTED FARM CROSSING, TYPICAL, ALL PIPES TO BE REMOVED ND PI 9 111 P'o_ 99 N LL ©2005 5od * Environmental Consultants, PA. All rlght5 reserved. EX15TING 51TE CONDITION5 ./ n °o o p1 N .. ( z0 II Z 0 ?o NZi Q z?Z zQ O LLJ oz i.- W F I-- (S) 0 (L a-/ z L' 0 Q c J ? - >1 C V 0 1 ? V t ci' aP a O .. V? N z a u SITE BOUNDARY EMERGENT MARSh WETLAND AREA NON-RIVERINE WETLAND BOUNDARY 99 9g ?o -NORMA DRIVE (GRAVEL ROAD) 8g ' 7 EM GENT MARSH LAND AREA I PROPOSED NEW CHANNE 9 EM?GENT M ETLAN D APPROXIMATE RIVERINE WETLAND BOUNDARY m 9,9 OPOSED E Ch EL ? 89 Z 0 m Il z00 Q4 0 0? ft ? U) v MAG. 1070 DB 15G PG G54 SCALE Q z0 z ? 200 100 0 200 p U 0 CONTOUR INTERVAL = P L ALL CONTOURS SHOWN ARE EXISTING Lu Lu z 0 0 z 0 U ALL SITE FEEDER DITCHES Q o TO BE BACKFILLED AND Q 3 o LEVEL GRADED a w o EMERGENT MARSH d ??k< WETLAND AREA TOPOGRAPHIC HIGH POINTS TO BE LEVEL GRADED v rn a D v V J?? 1 g X605 oo g Je ? U ?yp,1,1? ? N q P'T D? SITE BOUNDARY ?a 0 ? ©2005 Sod * Environmental Con5Ultant5, PA. All neHt5 reserved. P R0 POS E D 5 ITE CONDITIONS * INDEX MAP Office Use Only: Form Version October 2001 2005 1 354 USACE Action Ill No. DWQ No. If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than leaving the space blank. 1. Processing R R v 0 0 vr?" D D 1. Check all of the approval(s) requested for this project: JUL 1 9 2005 ® Section 404 Permit DENR - WATER QUALITY ? Section 10 Permit WETLANDS AND STORMWATER BRANCH ® 401 Water Quality Certification ? Riparian or Watershed Buffer Rules 2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 27 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 Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (see section VIII - Mitigation), check here: ? II. Applicant Information 1. Owner/Applicant Information Name: NC Ecosystem Enhancement Program Mailing Address: 1652 Mail Service Center Raleigh, NC 27699-1619 Telephone Number: 919-715-1157 Fax Number: 919-715-2219 E-mail Address: salam.murtada(jncmail.net 2. Agent 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: Company Affiliation: Mailing Address: Telephone Number: E-mail Address: Fax Number: Page 5 of 12 i 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: Watts Property Stream and Wetland Restoration Plan 2. T.I.P. Project Number or State Project Number (NCDOT Only): 3. Property Identification Number (Tax PIN): 4. Location County: Perquimans Nearest Town: Town of Hertford Subdivision name (include phase/lot number): Directions to site (include road numbers, landmarks, etc.): The site is located immediately adjacent to Norma Drive near its intersection with Little River Shore Road (SR 1326). See attached Site Location Nlap. 5. Site coordinates, if available (UTM or Lat/Long): (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Describe the existing land use or condition of the site at the time of this application: Agricultural land (soy beans production). 7. Property size (acres): 44 acres 8. Nearest body of water (stream/river/sound/ocean/lake): Little River 9. River Basin: Pasquotank (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/.) 10. Describe the purpose of the proposed work: Stream restoration project 11. List the type of equipment to be used to construct the project: Track Hoes, Page 6 of 12 F 12. Describe the land use in the vicinity of this project: agricultural, timber operation, rural residential with some commercial and industrial facilities. 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. According to Ms. Tracy Wheeler (USA CE), the action number for the wetland will be provided in the near future. 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; None 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. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must 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. Wetland Impacts Wetland Impact Site Number (indicate on ma) Type of Impact* Area of Impact (acres) Located within 100-year Floodplain** (yes/no) Distance to Nearest Stream (linear feet) Type of Wetland*** List each impact separately and identity temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at http://www.fema.gov. Page 7 of 12 I *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) List the total acreage (estimated) of existing wetlands on the property: 44 acres of prior-created wetland. Total area of wetland impact proposed: 44 acres 2. Stream Impacts, including all intermittent and perennial streams: None Stream Impact Site Number (indicate on ma) Type of Impact* Length of Impact (linear feet) Stream Name** Average Width of Stream Before Impact Perennial or Intermittent? (please secify) See site Restoration 2,200 Watts Property stream 6-10 feet Perennial List eacn impact separatey anu toentny temporary impacts. impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, 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. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USES maps are available through the USGS at 1-800-358-9616, or online at www.usgs.sov. Several internet sites also allow direct download and printing of USGS maps (e.g., ww-w.topozone.coin, www.mapquest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 2,200 LF 3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any other Water of the U.S. Open Water Impact Area of Name of Waterbody Type of Waterbody Site Number Type of Impact* Impact (if applicable) (lake, pond, estuary, sound, (indicate on ma) (acres) bay, ocean, etc.) See site Restoration 44 n/a Prior-created, agricultural List eacn impact separately and identity temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging, flooding, drainage, bulkheads, etc. 4. Pond Creation (N/A) 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.): Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Size of watershed draining to pond: Expected pond surface area: Page 8 of 12 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. This project involves the restoration of 2,200 linear feet stream, restoration of approximately 4 acres of riverine wetlands and the restoration of approximately 40 acres of non-riverine wetlands. Due to agricultural activities, the existing stream has been channelized and incised causing the existing wetland to be converted to non-wetland area for agricultural use (soy beans production). The goal of the project is to restore the wetland to its pre-existing conditions. VIII. Mitigation DWQ - In accordance with 15A NCAC 21:1 .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. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, 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 NCWRP 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.ne.us/ncwetlands/strmgide. htm1. 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) Page 9of12 r 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. Please see the existing site layout and the proposed grading and wetland planting plans attached with the PCN application. 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that you would like to pay into the NCWRP. Please note that payment into the NCWRP must be reviewed and approved before it can be used to satisfy mitigation requirements. Applicants will be notified early in the review process by the 401/Wetlands Unit if payment into the NCWRP is available as an option. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.htin. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): Amount of buffer mitigation requested (square feet): Amount of Riparian wetland mitigation requested (acres): Amount of Non-riparian wetland mitigation requested (acres): Amount of Coastal wetland mitigation requested (acres): IX. Environmental Documentation (DWQ Only) Does the project involve an expenditure of public funds or the use of public (federal/state/local) land? Yes ® No ? 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)? 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 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 (DWQ Only) 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 Page 10 of 12 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. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No ® If you answered "yes", provide the following information: 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 0 2 1.5 0 Total 0 Gone t extends out 30 feet perpendicular from near bank of channel; "Lone 2 extends an additional 20 feet from the edge of Zone 1. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. XI. Stormwater (DWQ Only) Describe impervious acreage (both 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. Not applicable to this project XII. Sewage Disposal (DWQ Only) 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. The project will not involve sewage disposal XIII. Violations (DWQ Only) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules? Yes ? No Page 11 of 12 a Is this an after-the-fact permit application? Yes ? No XIV. 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). Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 12 of 12 NOTES: 1. TOPOGRAPHIC DATA DEVELOPED BY LIMITED ENGINEERING SURVEY PERFORMED BY S*EC USING TOTAL STATION. 2. ALL CONTOURS ARE APPROXIMATE AND BASED ON ASSUMED ELEVATION OF 100.00'. 3. THIS IS NOT A BOUNDARY SURVEY AND iS NOT FOR RECORDATION, CONVEYANCE, OR SALES. EXISTING AGRICULTURAL STORAGE SHED EXISTING FEEDER DITCHES LEGEND KG? 51TE RAIN GAUGE wV 51TE GROUND WATER GAUGE / CHANNEL OR DITCH FLOW / DIRECTION PHOTOGRAPH NUMBER I (HE FHOT05 APPENDIX) ? EXI5TING CULVERT PIPE IN DRAINAGE NETWORK 02005 soil *- Environmental Consultants, PA. All rights reserved. UTILITY POLES EXPECTED LINES UTILITY EASEMENT 2 0 0 5 1 3 5 4 0 i5+:=9°3 979 P? POV?ER POOLE LE G G P NORMA DRIVE MAG. i DB 156 PG 654 (GRAVEL ROAD) 99 i. SCALE 061 200 100 0 200 CONTOUR INTERVAL = I' ALL CONTOURS SHOWN ARE FXI5TING EXISTING W-2 KG 0 CHANNEL ®a EXISTING P) FEEDER DITCHES m n ?O 05 % o? ?gti 9? ??P gt all '9.9 W- C, w- 0 w- 1 w-s 1 SITE BOUNDARY P9 EXISTING CULVERTED Pll °?- FARM CROSSING, TYPICAL, ALL PIPES TO BE REMOVED EXI5TING 51TE CONDITION5 SITE BOUNDARY EMERGENT MARSH WETLAND AREA NON-RIVERINE WETLAND BOUNDARY APPROXIMATE RIVERINE WETLAND BOUNDARY 9g G? '4'pll EM GENT MA H ETLAND A rA R/ / /0 i EM 1 1 PROPOSED NEW CHANN 3,9 POSED NCH 'EL 54 25 Q4 MAG. 1979 DD 15G PG G54 NORMA DRIVE (GRAVEL ROAD) 5CALE 200 100 0 200 SENT MARSH CONTOUR INTERVAL = I' BLAND AREA ALL CONTOURS 5HOWN ARE EXI5TING ALL SITE FEEDER DITCHES TO BE BACKFILLED AND LEVEL GRADED \ /EMERGENT MARSH v? WETLAND AREA ks, pdC? D D ??L 1 g 2005 DEN Iwo sl SITE BOUNDARY TOPOGRAPHIC HIGH POINTS TO BE LEVEL GRADED zoQ iiZ? a ad ? s Q K W Q C WW z Q z U ? U-j 1L 0 8F I- N cn v O 0 L IL/? o G- ?z 0 Q ?C?j U 0 Lu (s) g Z ?' 0 Q> o 0 W CZ/ Q V 0 ~ V a w Ov V° ?U r N z W° d? a ©2005 Sod * Environmental Consultants, PA. All nght5 reserved. PROP 05 E D 51 T E CONDITION 5 * INDEX MAP a Office Use Only: Form Version October 2001 USACE Action ID No. DWQ No. 2 0 0 5 1 3 5 4 If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" rather than leaving the space blank. 1. Processing 1135=3@N1WT=1 1. Check all of the approval(s) requested for this project: ® Section 404 Permit JUL 1 9 2005 ? Section 10 Permit WATER QUALITY DE NR • PHR imo ® 401 Water Quality Certification WSLA gANDSTORM? ? Riparian or Watershed Buffer Rules 2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 27 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 Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (see section VIII - Mitigation), check here: ? II. Applicant Information I . Owner/Applicant Information Name: NC Ecosystem Enhancement Program Mailing Address: 1652 Mail Service Center Raleigh, NC 27699-1619 Telephone Number: 919-715-1157 Fax Number: 919-715-2219 E-mail Address: salam.murtada@ncmail.net 2. Agent 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: Company Affiliation: Mailing Address: Telephone Number: E-mail Address: Fax Number: Page 5 of 12 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: Watts Property Stream and Wetland Restoration Plan 2. T.I.P. Project Number or State Project Number (NCDOT Only): 3. Property Identification Number (Tax PIN): _ 4. Location County: Perquimans Nearest Town: Town of Hertford Subdivision name (include phase/lot number): Directions to site (include road numbers, landmarks, etc.): The site is located immediately adjacent to Norma Drive near its intersection with Little River Shore Road (SR 1326). See attached Site Location Map. 5. Site coordinates, if available (UTM or Lat/Long): (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Describe the existing land use or condition of the site at the time of this application: Agricultural land (soy beans production). 7. Property size (acres): 44 acres 8. Nearest body of water (stream/river/sound/ocean/lake): Little River 9. River Basin: Pasquotank (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/.) 10. Describe the purpose of the proposed work: Stream restoration project 11. List the type of equipment to be used to construct the project: Track Hoes, Page 6 of 12 01 12. Describe the land use in the vicinity of this project: agricultural, timber operation, rural residential with some commercial and industrial facilities. 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. According to Ms. Tracy Wheeler (USACE), the action number for the wetland will be provided in the near future. 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: None 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. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must 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. Wetland Impacts Wetland Impact Site Number (indicate on ma) Type of Impact* Area of Impact (acres) Located within 100-year Floodplain** (yes/no) Distance to Nearest Stream (linear feet) Type of Wetland*** List each impact separately and identity temporary impacts. impacts include, but are not limited to: mechanized clearing, grading, till, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at littp://www.fenia.aov. Page 7 of 12 *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) List the total acreage (estimated) of existing wetlands on the property: 44 acres of prior-created wetland. Total area of wetland impact proposed: 44 acres 2. Stream Impacts, including all intermittent and perennial streams: None Stream Impact Site Number (indicate on ma) Type of Impact* Length of Impact (linear feet) Stream Name** Average Width of Stream Before Impact Perennial or Intermittent? (pleasespecify) See site Restoration 2,200 Watts Property stream 6-10 feet Perennial List each impact separately and identity temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, 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. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at www.uses.i;ov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com, www.mapquest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 2,200 LF 3. Open Water Impacts, including Lakes, Ponds, Estuaries, Sounds, Atlantic Ocean and any other Water of the U.S. Open Water Impact Area of Name of Waterbody Type of Waterbody Site Number Type of Impact* Impact (if applicable) (lake, pond, estuary, sound, (indicate on ma) (acres) bay, ocean, etc.) See site Restoration 44 n/a Prior-created, agricultural List cacti impact separately and identity temporary impacts. impacts include, but are not limited to: fill, excavation, dredging, flooding, drainage, bulkheads, etc. 4. Pond Creation (N/A) 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.): Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Size of watershed draining to pond: Expected pond surface area: Page 8 of 12 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. This project involves the restoration of 2,200 linear feet stream, restoration of approximately 4 acres of riverine wetlands and the restoration of approximately 40 acres of non-riverine wetlands. Due to agricultural activities, the existing stream has been channelized and incised causing the existing wetland to be converted to non-wetland area for agricultural use (soy beans production). The goal of the project is to restore the wetland to its pre-existing conditions. 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. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on March 9, 2000, 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 NCWRP 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.htm1. 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) Page 9 of 12 r 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. Please see the existing site layout and the proposed grading and wetland planting plans attached with the PCN application. 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP) with the NCWRP's written agreement. Check the box indicating that you would like to pay into the NCWRP. Please note that payment into the NCWRP must be reviewed and approved before it can be used to satisfy mitigation requirements. Applicants will be notified early in the review process by the 401/Wetlands Unit if payment into the NCWRP is available as an option. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.hon. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): Amount of buffer mitigation requested (square feet): Amount of Riparian wetland mitigation requested (acres): Amount of Non-riparian wetland mitigation requested (acres): Amount of Coastal wetland mitigation requested (acres): IX. Environmental Documentation (DWQ Only) Does the project involve an expenditure of public funds or the use of public (federal/state/local) land? Yes ® No ? 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)? 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 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 (DWQ Only) 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 Page 10 of 12 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. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No ® If you answered "yes", provide the following information: 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 0 2 1.5 0 Total 0 Lone I extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. XI. Stormwater (DWQ Only) Describe impervious acreage (both 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. Not applicable to this project XII. Sewage Disposal (DWQ Only) 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. The project will not involve sewage disposal XIII. Violations (DWQ Only) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules? Yes ? No Page 1 1 of 12 Is this an after-the-fact permit application? Yes ? No ? XIV. 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). N/?_o0 Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 12 of 12 NOTES: TOPOGRAPHIC DATA DEVELOPED BY LIMITED ENGINEERING SURVEY PERFORMED BY 5*EC USING TOTAL STATION. 2. ALL CONTOURS ARE APPROXIMATE AND BA5ED ON A55UMED ELEVATION OF 100.00'. 3 THI5 IS NOT A BOUNDARY SURVEY AND IS NOT FOR RECORDATION, CONVEYANCE, OR SALES. EXISTING AGRICULTURAL STORAGE SHED 3 EXISTING FEEDER DITCHES 0 a W LEGEND V p? O N ac-n 51TE RAIN GAUGE o SITE GROUND WATER GAUGE 1 CHANNEL OR DITCH FLOW 1 u / a 3 PHOTOGRAPH NUMBER J (5EE PHOT05 APPENDIX) 0 $ ? EXI5TING CULVERT PIPE IN DRAINAGE NETWORK a 'nl@2005 5od f' Environmental Consultants, PA. All rlght5 reserved. I ITII 1"N P!'ll FG, 0? q X00 SITE BOUNDARY EXISTING CULVERTED FARM CR0551NG, TYPICAL, ALL PIPES TO BE REMOVED EXISTING 51TE CONDITIONS EXPECTED UTI LITY EASEMENT NORMA DRIVE (GRAVEL ROAD) MAG. 1070 DD 15G PG G54 200 100 0 200 CONTOUR INTERVAL= I' ALL CONTOURS SHOWN ARE EXISTING EXISTING FEEDER DITCHES ?'?2 °o o? N .. Zo` iiZc v- i ?W o? W? z V Z Z Q W O W V / U ?0- o LLJ Z c) z 0 g? W C u V 0 V y ? N F L L' ( C SITE BOUNDARY MAG. 197G95 DB 156 PG 4 EMERGENT MARSH WETLAND AREA NON-RIVERINE WETLAND BOUNDARY APPROXIMATE RIVERINE WETLAND BOUNDARY ul©2005 Soil * Environmental Consultants, PA. All SCALE 200 100 0 200 CONTOUR INTERVAL = I' ALL CONTOUR5 5HOWN ARE EXI5TING ALL SITE FEEDER DITCHES TO BE BACKFILLED AND LEVEL GRADED TOPOGRAPHIC HIGH POINTS TO BE LEVEL GRADED EMERGENT MARSH WETLAND AREA "AA I ?dgQ 0 wx?slls Slog SITE BOUNDARY re5ervea. FROF05ED 51TE CONDITIONS * INDEX MAP NORMA DRIVE (GRAVEL ROAD) ENT MARSH ;LAND AREA JUL 1 g 205 o 0 0 00O N .. Zoe uZ(` U ? U_ U Q z uZ zQ a U.1 z - N? Z 0 0 L z CL ? 0 0 0 U ? (s) g - z 0 W j a o w a- CL/ u 7 o o i a? 4r,? w N O v V' ?g u a U r N z a u STREAM & WETLAND RESTORATION PLAN FOR os Watts Property 20 '3s Perquimans County, North Carolina 4 rY S&EC Project No. 8099.D1 March 2005 REVISED April 2005 REVISED June 2005 REVISED July 2005 TABLE OF CONTENTS F 0 V 12 D Q JUL 1 9 2005 COVER SHEET TABLE OF CONTENTS DENR - WATER QUALITY WETLANDS AND STORMWATER BRANCH 1.0 INTRODUCTION ....................................................................................................... 1 2.0 PROJECT GOALS & OBJECTIVES ........................................................................... 2 3.0 PROJECT LOCATION ........ 4 ........................................................................................ 4.0 GENERAL WATERSHED INFORMATION ............................................................. 5 4.1 Drainage Area ..................................................................................................... 5 4.2 Land Usage & Distribution ................................................................................. 5 4.3 Future Land Use .................................................................................................. 5 5.0 EXISTING SITE CONDITIONS ................................................................................. 6 5.1 Existing Hydrologic Features ............................................................................. 6 5.2 Site Soils ...... 7 ..................................................................................................... .. 5.3 Existing Plant Community ................................................... 7 ............................. 5 4 Threate d d E d d S i .. . ne an n angere pec es ................................................................ .. 7 5.5 Stream Geometry & Substrate Material ............................................................ .. 8 5.6 Nearby Areas of Historical Significance .......................................................... .. 8 5.7 Floodplain Coordination ................................................................................... .. 8 5.8 Other Site Features & Utilities .......................................................................... .. 9 6.0 STREAM & WETLAND EVALUATION ................................................................ 10 6.1 Reference Stream & Wetland Studies ................................................................... 10 6. 1.1 Stream Reference Reach ....................................................................... 10 6.1.2 Regional Curve Verification ................................................................... 10 6.1.3 Riverine Reference Wetland ..................................................................... 11 6.2 Site Wetland Delineation ........................................... . 12 . ......................................... 6 3 Site Ground t D t . wa er a a .......................................................................................... 12 6.4 Site Rainfall Data .................................................................................................. 13 7.0 STREAM & WETLAND RESTORATION PLAN ................................................... 14 7.1 Site Demolition Plan ............................................................................................. 14 7.2 Stream Restoration Concept .................................................... 14 ............................. 7.3 Natural Channel Design 1 ........................................................................................ 5 7.3.1 Restoration Methodology ............................................................................. 15 7.3.2 Channel Competency Determination ........................................................... 16 7.3.3 In-Stream Structures ................................................ 17 .................................... 7 4 Planned H d l i M dif i . y ro og c o icat ons ....................................................................... 17 7.5 Wetland Vegetative Community Restoration ....................................................... 18 7.5.1 Riverine Planting Zone ............................................................................. 18 7.5.2 Non-Riverine Planting Zone ..................................................................... 20 7.5.3 Herbaceous Planting Zones .......................................................................... 21 7.6 Soil Restoration ..................................................................................................... 22 7.7 Removal of Invasive or Undesirable Species ....................................................... 22 7.8 Erosion & Sediment Control ................................................................................. 22 i 7.9 Construction Sequence .......................................................................................... 23 8.0 STREAM & WETLAND SUCCESS CRITERIA & MONITORING PLAN ........... 26 8.1 Stream Restoration Monitoring ......................................................................... 26 8.1.1 Physical Monitoring ..................................................................................... 26 8.1.3 Biological Monitoring .................................................................................. 27 8.2 Wetland Restoration Monitoring .......................................................................... 27 8.2.1 Hydrologic Success Criteria ........................................................................ 27 8.2.2 Vegetative Success Criteria ...................................................................... 27 8.2.3 Physical Success ....................................................................................... 28 8.3 Monitoring Schedule ......................................................................................... 28 LIST OF FIGURES LIST OF APPENDICES 11 LIST OF FIGURES FIGURE 1 Project Vicinity Map FIGURE 2 USGS Topographic Map - Site Location FIGURE 3 Perquimans County Soils Survey Map - Site Location FIGURE 4 USGS Topographic Map - Reference Site Locations FIGURE 5 Perquimans County Soils Survey Map - Reference Sites FIGURE 6 Existing Site Conditions FIGURE 7 Proposed Site Conditions & Index Map FIGURE 8 Proposed Stream Restoration Layout - Sheet 1 of 3 FIGURE 9 Proposed Stream Restoration Layout - Sheet 2 of 3 FIGURE 10 Proposed Stream Restoration Layout - Sheet 3 of 3 FIGURE 11 Proposed Stream Longitudinal Profile - Sheet 1 of 3 FIGURE 12 Proposed Stream Longitudinal Profile - Sheet 2 of 3 FIGURE 13 Proposed Stream Longitudinal Profile - Sheet 3 of 3 FIGURE 14 Typical Restored Channel & Floodplain Cross-sections FIGURE 15 Typical In-channel Structures & Bank Stabilization Details FIGURE 16 Erosion Control Details I FIGURE 17 Erosion Control Details II FIGURE 18 Site Planting Plan FIGURE 19 Planting Details iii LIST OF APPENDICES APPENDIX A Site Photographs APPENDIX B Reference Stream & Wetland Photographs APPENDIX C Preliminary Site Groundwater Data APPENDIX D Site Rainfall Data APPENDIX E Stream Morphological Characteristics Data Table APPENDIX F Existing Conditions Stream Data APPENDIX G Reference Reach Stream Data APPENDIX H Proposed Conditions Stream Data APPENDIX I State Historic Preservation Office (SHPO) Letter APPENDIX J Perquimans County Floodplain Coordination Letter iv 1.0 INTRODUCTION Soil & Environmental Consultants, PA (S&EC) has been contracted by the North Carolina Ecosystem Enhancement Program (NCEEP) to restore approximately 1,523 linear feet of stream channel, 4 acres of riverine (stream-side) wetlands, and 40 acres of non-riverine wetlands on the Watts Property near the town of Hertford in Perquimans County, NC (Hydrologic Cataloging Unit 03010205). Using natural channel design, there is the potential to restore as much as 2,200 linear feet of stream channel. See Figure 1 for a site vicinity map. In March 2005, S&EC prepared a Conceptual Restoration Plan to gain concurrence from the NCEEP on our concept for the restoration of the impaired stream and the former site wetlands. At that time we solicited additional comment and input from NCEEP for incorporation into this Restoration Plan. We have incorporated the comments and suggestions provided by NCEEP into our plan. This report presents our design rationale and documentation for the proposed Restoration Plan to restore stream function, wetland hydrology and vegetation, and the resultant habitat. This will be performed through the construction of an appropriately sized coastal stream and site grading including but not limited to the filling of existing site drainage ditches. Once complete the restored stream and wetlands will be planted with the appropriate vegetative species. The interested reader is referred to the included figures and appendices for additional information. 2.0 PROJECT GOALS & OBJECTIVES The channelized and impaired state of the existing stream, limited floodplain functionality due to channel incision, existing and future sedimentation and erosion potential, and lack of native vegetation along the banks and riverine buffer zone indicate that this length of stream presents a viable restoration project. Additionally, the remainder of the property consists of former coastal wetlands which, through the use of agricultural practices including ditching, have been converted for use as agricultural lands. In this process we intend to accomplish the following objectives: 1) Restore approximately 1,523 linear feet of appropriately sized stream channel that is stable and self-maintaining, and that will not aggrade or degrade over time, by utilizing Rosgen-based natural channel design procedures and techniques. 2) Develop a restored channel with the appropriate morphological characteristics (cross-sectional dimension, pattern, and longitudinal profile) utilizing locally collected reference reach data as a guide. Allow for no net loss of overall channel length in the process. 3) Create and/or improve bed form diversity (riffles, runs, pools, and glides) and improve aquatic and benthic macroinvertebrate habitat. 4) Construct a floodplain (or local bankfull bench) that is accessible at the proposed bankfull channel elevation. 5) Ensure channel and stream bank stabilization by integrating in-stream structures and native bank vegetation. 6) Establish a native forested and herbaceous riverine buffer plant community within a minimum width of 50 feet from the edge of the restored channel. This new community will be established in conjunction with the eradication of any existing exotic and/or undesirable plant species. 7) Restore approximately 4 acres of riverine (stream-side) wetlands within the newly established floodplain of the restored channel. Provide the desired riverine wetland community through the use of microtopographic grading and the planting of the appropriate wetland vegetative species. 8) Restore approximately 40 acres of non-riverine wetlands within the site through the modification of existing site features which currently alter hydrology. Provide the desired wetland vegetative community through the planting of the appropriate wetland vegetative species. 2 9) Allow for treatment of nutrient rich agricultural runoff from adjacent and upstream properties through the utilization of riverine wetlands as a treatment mechanism. 10) Restore habitat in and along the stream and riverine corridor by enhancing vertical and horizontal structure perpendicular to the restored channel. In doing so provide cover, travel corridors, and access to the adjacent natural areas for mammalian, reptilian, and avian species. 11) Incorporate the restoration effort into the site's surroundings to provide aesthetic and educational values. 3 3.0 PROJECT LOCATION The Watts Property Stream & Wetland Restoration project is located in the Pasquotank River Basin, Hydrologic Cataloging Unit 03010205, along the southwest bank of the Little River near its confluence with the Albermarle Sound in Perquimans County, NC. The site, near Hertford, NC, is immediately adjacent to Norma Drive near its intersection with Little River Shore Road (SR 1326). See the attached Site Location Map (Figure 1) and the attached 7.5 minute series USGS Topographic Map, Nixonton, NC (Figure 2) for specifics on directions to the site and the surrounding vicinity. According to the North Carolina Department of Environment and Natural Resources (NCDENR), Division of Water Quality (DWQ) website, the Little River (Stream Index Number 30-5-(2)) is classified as a Class SC watercourse. The following definitions apply: Class SC - aquatic life propagation and survival, fishing, wildlife, and secondary recreation. The site consists of a single tract of approximately 48 acres, previously owned by Mr. Richard Watts of Venice, Florida. 4 4.0 GENERAL WATERSHED INFORMATION During our analyses we observed characteristics of the site and surrounding area, verified surface and channel flow conditions, and observed existing water conveyance structures. This section describes our evaluation of the project watershed (See Figure 2). 4.1 Drainage Area The watershed area for the project site is estimated at approximately 0.16 square miles (102 acres). Much of the drainage area is interlaced with a complex system of interconnecting drainage ditches designed to evacuate surface water and draw down ground water during the wetter portion of the year. The outlet for the drainage is an existing pipe which carries discharges from the site (and contributing drainage) under Norma Drive and into the Little River. 4.2 Land Usage & Distribution The entirety of the site itself has most recently been used for agricultural purposes (primarily soybean production). It is our understanding that this use has been continuous for many years. The surrounding area and contributing watershed is similarly used primarily for agricultural purposes and timber operations (mixed pine and hardwood forest) with individual home sites, a few small clusters of higher density residential lots (1 /2 to 1 acres), and agricultural buildings. Select small municipal, commercial, or industrial facilities are also sparsely intermixed into the mostly rural landscape. 4.3 Future Land Use With the execution of the proposed restoration plan, the site will be removed from agricultural use, regraded, and planted with a mix of woody and herbaceous wetland vegetative species. Based on our observation of current land use in the surrounding area and the primarily rural landscape, it is unlikely that future (5 to 10 years) land usage will differ considerably from the current use. 5 5.0 EXISTING SITE CONDITIONS On October 10 & 12, 2003, and again on January 13 & 14, 2004, Soil & Environmental Consultants, PA, performed a limited engineering survey using Total Station equipment to identify site characteristics to include, but not limited to drainage ditches, open channels, water conveyances, utilities, and structures. While on site, we also observed surface and open channel flow conditions, and the surrounding (and contributing) drainage area. This section describes existing site conditions at Watts Property based on field data recorded by Soil & Environmental Consultants, PA, during our site visits to date. See attached Existing Site Plan (Figure 6) and the Appendix A - Site Photographs for details. The location and direction of view for site photos is shown on the Existing Site Plan. 5.1 Existing Hydrologic Features As previously noted, much of the contributing drainage area (both on and off site) is interlaced with a complex system of interconnecting drainage ditches. From their configuration it is evident that they were installed to evacuate site surface water and draw down ground water during the wetter portion of the year. In doing so, these ditches have allowed for easier access of farm equipment and the resultant utilization of a significantly larger portion of the surrounding landscape for agricultural practices. The on-site network includes a total of twelve (12) intersecting agricultural ditches of varying dimensions totaling over 9,000 feet in length. Many of these ditches eventually drain to a single straightened and dredged stream channel which bisects the property. This system is shown in detail on Figure 6 along with indicators of flow direction. These feeder ditches range from roughly 6 to 15 inches deep up to 2 to 3 feet in depth (at top of bank). The feeder ditches vary in top width from approximately 4 to almost 8 feet in width. At select locations the ditch network is tied with existing corrugated metal pipe (CMP) and corrugated plastic pipe (CPP) culverts ranging in size from 12 inches to 24 inches. These pipes serve as crossing locations for farm equipment allowing access to all portions of the property. The main channel, for which stream restoration is proposed, serves to collect site surface runoff (overland and from adjacent the ditches) and site groundwater. This same channel also receives upstream watershed discharges from two agricultural ditches near the southern property boundary. In its current straightened condition the channel is approximately 1,523 feet in length. A 24 inch CMP culvert is situated at the approximate mid-point of the existing reach. The channel ranges from 3 to 4 feet in depth (at top of bank) while varying in top width from approximately 6 feet to as much as 10 feet in width. The stream banks are moderately steep to steep along much of the channel length with little or no vegetative cover over most of the length. The average slope along the length 6 of the existing channel is 0.00217 ft/ft. No woody vegetation was observed on any of the site stream or ditch banks, with the exception of the south side of the two feeder ditches which parallel the southern property line. Along these, the southern bank is densely vegetated with woody vegetation. The stream leaves the site near its north property boundary through an existing 24 inch CMP under Norma Drive and into a feeder canal for the Little River. The pipe itself is completely submerged (at both ends). The upstream culvert headwall is in disrepair and the downstream end of the pipe has no discernable headwall and is crushed. During our site visits we observed excessive sedimentation within the pipe, partially burying the downstream end of the culvert. Consideration should be given to the replacement of existing pipe with an appropriately sized pipe arch culvert. 5.2 Site Soils The site's location is shown on the Perquimans County Soil Survey segment included as Figure 3. In the Perquimans County Soil survey, on-site soils are mapped Roanoke silt loam. The USDA describes the Roanoke silt loam as a nearly level, poorly drained soil with slow permeability and moderate shrink swell potential. The high water table is at or near the surface and when drained the soil is well suited to corn, soybean, and grain production. Dominant vegetative communities usually include loblolly pine, red maple and sweet gum with an understory of cedar, American holly, sweet bay, sourwood, reeds, and wax myrtle. Select hand auger borings were performed at various locations. Based on our observations, it is our opinion that site soils are uniform and taxonomically consistent with Roanoke silt loam. No laboratory soil tests were performed. 5.3 Existing Plant Community As the site has been used for soybean production, the natural plant community has been greatly altered. The site is barren except for remnant vegetation on the south side of the two feeder ditches which parallel the southern property line. This woody vegetation consists primarily of Red Maple (Ater rubrum). Vegetation in the surrounding wooded areas consist primarily of Loblolly Pine (Pinus taeda) and Red Maple (Ater rubrum). 5.4 Threatened and Endangered Species In order to assess potential impacts to any federal and state threatened and/or endangered species the proposed restoration effort may pose, a review was performed at the North Carolina Natural Heritage Program (NHP) Raleigh office. A two-mile radius of the site was evaluated for known Elements of Occurrence of threatened/endangered animals, and a five-mile radius was evaluated for threatened/endangered plants. No Elements of Occurrence of threatened or endangered federal and state animals were located within the radii specified above. The closest Element of Occurrence of a threatened/endangered animal to the site is an active bald eagle (Haliaeetus leucocephalus) nest approximately 5 miles east of the site across the Little River in a marsh area. We believe that the proposed restoration work will have no adverse effect on bald eagle habitat, and will likely help to enhance local habitat quality. 7 Within 5 miles, a state threatened vascular plant has been observed. The Carolina grasswort (Lilaeopsis carolinensis) occurs within freshwater marshes, pools, and tidal marshes within the coastal plain. Since the site has been drained and used as cropland, it is unlikely that any suitable habitat for the Carolina grasswort remains. It is unlikely that restoration activities will have a detrimental impact on this species. 5.5 Stream Geometry & Substrate Material The current channel was surveyed to develop a total of four (4) stream cross-sections and a longitudinal profile defining the existing conditions. From this data, we performed a Level II Classification (Rosgen) for the existing stream resulting in a Type 136c (very low width/depth ratio) in the upper third of the reach, and a slightly entrenched Type E6 channel for the remainder of the reach. These classifications were consistent with our site observations. The sinuosity of the existing channel is approximately 1.0, a value which is out of the acceptable range for both a Type B and a Type E stream. The average entrenchment ratio of the existing channel is 4.42, and the average width depth ratio is 4.66. The measured bankfull slope was 0.0022 ft/ft. The existing channel bed has little or no facets due to straightening and dredging. The silt bed is generally homogenous throughout the reach. Table 1 (Stream Morphological Characteristics Data Table) in Appendix E contains the morphological characteristics for the existing, reference, and proposed stream conditions. 5.6 Nearby Areas of Historical Significance The State Historical Preservation Office (SHPO) was contacted in order to determine potential impacts as a result of the proposed restoration effort at Watts Property to any nearby areas of historical significance. According to Ms. Renee Gledhill-Earley at SHPO, and as described in her letter dated March 9, 2005, there are no nearby areas of historical significance that would be impacted by the proposed work. A copy of this letter is enclosed as Appendix I. 5.7 Floodplain Coordination Mr. William Ethridge and Mr. Zeke Jackson of the Planning Department of Perquimans County were consulted regarding the proper procedure for the approval of this project. A letter dated June 20, 2005, was forwarded to the department describing the restoration efforts and requesting written approval of the project. A copy of this letter is included as Appendix J. 5.8 Other Site Features & Utilities Based on our site observations to date, a single structure currently exists on the property. This structure is an open-frame farm equipment shed located in the northwest corner of the property. This structure is proposed for demolition during site restoration. Select other utilities to include electric and telephone are located along the northern property boundary immediately south of Norma Drive. These utilities will require specific location and marking by the selected construction contractor prior to commencing restoration work. If the road and/or utility easements fall within the project bounds, coordination will be required in order to obtain a written encroachment agreement with the appropriate entities. S&EC has begun coordination in order to expedite the process. For planning purposes we have estimated easements at the site at 50 feet and 30 feet for the roadway and electric utility easements respectively. These estimated easements are reflected on Sheet 6. Actual easement widths, once determined, will be reflected on the Construction Drawings. 9 6.0 STREAM & WETLAND EVALUATION In order to facilitate restoration plan development as well as support project goals, an off- site stream reference reach and two reference wetland areas (one riverine and one non- riverine) were characterized. This section describes our evaluation to date of the reference sites, our on site jurisdictional waters delineation, existing groundwater conditions, and site rainfall. 6.1 Reference Stream & Wetland Studies All reference areas occupy similar landscape positions to that of the Watts Property site. The reference areas were quantitatively or qualitatively assessed, and species lists for each vegetative stratum (trees, shrubs, herbaceous, and vines) were recorded. 6.1.1 Stream Reference Reach The stream Reference Reach is located west of Red Bank Road (SR 1331) approximately 5000 feet north of its southern intersection with Woodville Road (SR 1329) (see Figure 4). The reach consisted of an unnamed tributary of the Little River. Similar to our restoration reach, this tributary flows generally east- northeast discharging along the western bank of the Little River. This location is approximately 3 miles northwest of the Watts Property. Due to the limited availability of reference streams in the area, this site was chosen due to its close proximity to the site while maintaining conditions similar to those we intend to replicate at the restoration site. The reference reach was surveyed with Total Station equipment. Our survey included approximately 320 linear feet of channel or approximately 35 bankfull widths (20 to 30 bankfull widths is desired). Two (2) cross sections and a longitudinal profile were surveyed. Key morphological characteristics developed include; a bankfull cross-sectional area (Abkf) of 8.07 square feet (ft) , a bankfull width (Wbkf) of 8.53 feet, and a mean bankfull depth (dbkf) of 0.95 feet. The reference channel has an average entrenchment ratio of 5. 1, and an average width/depth ratio of 8.9. Channel sinuosity is approximately 1.3, and bankfull slope is approximately 0.0014 ft/ft. The reference reach has distinct facets corresponding with channel pattern. The Level II classification for the reference reach is E6. Table 1 in Appendix E contains the morphological characteristics of the surveyed reference stream reach. Vegetation adjacent to the reference reach was similar to that described for the riverine reference wetland described in the next section. Photos of the reference reach are provided in Appendix B. 6.1.2 Regional Curve Verification Using data published by North Carolina Stream Restoration Institute (SRI) 10 (Regional Curves for North Carolina Coastal Streams - SRI 2003) we compared our reference data expectant riffle dimension characteristics for a stream with a watershed area of 0.45 square miles. Cross-sectional Area, Bankfull Width, and Mean Depth were all compared with the curve line and their placement in relation to the 95% confidence limits (upper and lower) for each of the three curves. The comparisons are presented in the following table: Regional Curve Data Morphological Reference Characteristic Reach Lower Curve Upper Data Limit Line Limit Cross-sectional Area, ft.2 8.07 2.30 8.57 28.00 Bankfull Width, ft. 8.53 4.30 8.23 17.00 Mean Depth, ft. 0.95 0.42 1.02 2.50 6.1.3 Riverine Reference Wetland The riverine reference wetland is located east of Red Bank Road (SR 1331) approximately 5000 feet north of its southern intersection with Woodville Road (SR 1329) (see Figure 4). This location is approximately 3 miles northwest of the Watts Property. The site is directly across the road from the stream Reference Reach along the same channel. In the Perquimans County Soil Survey, reference site soils are mapped as Chowan silt loam (see Figure 5). This soil type is very poorly drained and occurs on the flood plains of small streams that flow into the Perquimans River. The canopy is dominated by Red Maple (Ater rubrum), with some Green Ash (Fraxinus pennsylvanica) and American Elm (Ulmus americana) present. It is evident that approximately 60-80% of the canopy was damaged by the hurricanes that struck the area in 2004. The shrub stratum consisted of Chinese Privet (Ligustrum sinense), Japanese Honeysuckle (Lonicera japonica), Greenbriar (Smilax spp.), and Rattan Vine (Berchemia scandens), as well as saplings from species in the tree stratum. It is evident that manipulation of this site has occurred in the past, and, while we recognize the reference vegetation lacks diversity, we found it suitable for our purposes. Within the restoration, we utilized the Classification of the Natural Communities of North Carolina " to select later successional species to restore the communities that naturally existed in this area before anthropogenic alterations. Photographs of the Riverine reference wetland are provided in Appendix B. 6.1.4 Non-Riverine Reference Wetland The non-riverine reference wetland is also located east of Red Bank Road (SR 1331) approximately 4000 feet west/northwest of its intersection with Woodville Road (SRI 329) (See Figure 4). This area appears to flood much less frequently than the riverine reference wetland and although no areas of standing water were observed, soils were saturated to near the ground surface. In the Perquimans County Soil survey, reference site soils are mapped as Tomotley fine sandy loam, a poorly drained soil with moderate permeability. The canopy was dominated by Loblolly Pine (Pinus taeda). Also in the canopy several Tulip Poplar (Liriodendron tulipifera), Red Maple (Ater rubrum) and an unidentified oak were observed. The shrub stratum consists of Wax Myrtle (Myrica cerifera), Sweet Gum (Liquidambar styraciflua), American Holly (Ilex opaca), and Greenbrier (Smilax spp.), as well as saplings from species in the tree stratum. Photographs of the non-riverine reference wetland are provided in Appendix B. 6.2 Site Wetland Delineation On December 18, 2003, Soil & Environmental Consultants, PA, met with Mr. David Lekson of the U.S. Army Corps of Engineers (USACE), Washington District Office to observe site conditions, evaluate site soils, and discuss general restoration alternatives for the Watts Property project. At that time we understood that Mr. Lekson was in general agreement with our evaluation of site soils, and the general suitability and potential for the preliminary estimates regarding riverine and non-riverine wetland restoration. We are currently working with the U.S. Army Corps of Engineers Washington Office to determine an approach to the site wetland delineation. Additionally, we will contact the Natural Resources Conservation Service (NRCS) to confirm the Prior Converted (PC) wetland status of the property. 6.3 Site Groundwater Data Our evaluation of site groundwater to date included the siting and installation of a series of groundwater monitoring gauges with electronic data loggers. These gauges were provided to S&EC by NCEEP. A total of six (6) Infinities USA, Inc., data logger gauges (numbered W-1 through W-6) were installed on the project site on December 11, 2003. Locations of gauges are shown on Figure 6. Since their installation, these gauges have been downloaded on approximately a quarterly basis. To date all gauges have remained functional. We will continue to download collected data during the design process. On March 22, 2005, a total of four (4) gauges were installed on the reference wetlands, two (2) at the riverine reference wetland site (WRR-1 and WRR-2) and two (2) at the non-riverine reference wetland site (WRN-1 and WRN-2). Similar to the site gauges these will be downloaded on an approximate quarterly basis. 12 Gauge data from both the site and reference wetlands (riverine and non-riverine) was compiled for design use and incorporation into this Restoration Plan. Data collected from these gauges is provided in Appendix C. 6.4 Site Rainfall Data Our site work also included the purchase, siting, and installation of one (1) 6.5-inch diameter, 0.01-inch, self-emptying tipping bucket rain gauge data logger (Infinities USA, Inc.) on site. The gauge was installed on December 11, 2003. On or around March 27, 2004, vandals damaged the gauge and a second gauge subsequently was purchased and installed on the site. To date this gauge remains in place and functional. Approximately 3 months of rain data was retrieved from the damaged gauge. The location of the installed rain gauge is shown on Figure 6. Similar to the groundwater monitoring gauges rain data has also been collected on a quarterly basis and is provided in Appendix D. We will continue to download collected rainfall data during the design process. For comparison purposes we have obtained and plotted data (on the same graph) from the North Carolina Climate Retrieval Observations Network of the Southeast (CRONOS), Elizabeth City, FAA Airport gauge in Elizabeth City, NC. 13 7.0 STREAM & WETLAND RESTORATION PLAN Restoration of the Watts Property will be accomplished restoring the existing stream channel, restoring riverine or streamside wetlands associated with the restored stream channel, re-grading previously altered non-riverine wetland areas, and planting these denuded wetland areas with native wetland vegetation. We will use our reference stream reach (and other available stream data), and our two reference wetland areas (riverine and non-riverine) as a guideline. The interested reader is referred to Figures 6 through 20 for additional information regarding the proposed restoration plan. 7.1 Site Demolition Plan Site demolition will consist of the removal of the existing wooden equipment shed, the pulling of existing culverts, and the filling of existing agricultural drainage ditches. Current plans do not call for the removal or relocation of any utilities (running parallel to Norma Drive) or the replacement of the existing culvert beneath Norma Drive. The scheduled construction contractor shall be responsible for demolition, removal, and the appropriate disposal of all demolition debris in accordance with local, state, and federal guidelines. It will be the contractor's responsibility to identify appropriate local disposal sites, obtain necessary disposal permits, and pay permit fees. 7.2 Stream Restoration Concept The implementation of the restoration plan will result in the development of a stable natural stream channel within a contiguous fully vegetated and protected riverine corridor. In order to perform the necessary stream restoration along the impacted reach, natural channel design methods will be employed. The restored reach will have the appropriate dimension (cross-section), pattern (sinuosity), and profile (channel slope) of a naturally occurring, stable channel based on the use of an appropriate reference reach with the appropriate valley type and land form. Design will include the evaluation of both water and sediment transport requirements to produce a stable stream in dynamic equilibrium. Restoration of natural channel geometry and structure will not only improve morphologic function and habitat within the immediate channel environment, but also in the water quality downstream of the restored channel as well. Stream banks will be planted with native vegetation that represents both woody (trees and shrubs) and herbaceous species. Species selection will be based on a survey of the vegetation from the reference reach and from reference literature that details native species. Restoration of a suitable riverine buffer will enhance the recovery and protection of the restored stream. A protected buffer (with a width minimum of 50 feet) will be restored on both sides of the channel restoration reaches. The wooded corridors that will be established as part of this restoration will also increase the vertical and horizontal 14 structure perpendicular to the channel along the reach helping to increase species composition and abundance. Additionally, the presence of a wooded buffer adjacent to the channel not only increases in-stream habitat quality by cooling water and increasing oxygen content, it also provides cover, travel corridors, and access to adjacent natural areas for mammalian, reptilian, and avian species as well. 7.3 Natural Channel Design The restoration design for the site stream is based on natural channel design principles and techniques utilizing reference reach data sets and the existing channel conditions survey data. Reference data utilized in our design will include the reference reach, two comparative reference reaches, and the North Carolina Coastal Regional Curve (SRI 2003). A conceptual sketch of the general restoration alignment is provided in Figures 7, 8, and 9. Typical proposed channel and floodplain cross-sections are shown in Figure 14, and the proposed longitudinal profile is shown in Figures 11, 12, and 13. 7.3.1 Restoration Methodology The proposed stream type is an E6. If the construction of a stable E6 channel becomes difficult and costly due to less cohesive soils in the upper sections of the stream banks, the channel will be constructed as a low width/depth C6 so that it will have stable banks and will be able to adjust to a stable E6 over time. The channel will be a meandering reach with stable pattern, profile and dimension. Table 1 in Appendix E contains existing, reference, and proposed stream morphological characteristics. Log cross vanes will be located at the beginning and end of the reach, and at any straight sections of significant length throughout the reach. The cross- vanes will provide grade control for the reach and protect both sides of the channel stream banks in straight sections. Log j-hooks will be placed at various locations throughout the reach. The j-hooks will protect the outside meanders from lateral erosion, improve channel facets, and improve sediment transport. The majority of our proposed structures are constructed of hardwood logs with boulder footers. Log cross vanes and j-hooks will be constructed with hardwood logs approximately 12 to 15 inches in diameter. Boulders will be utilized in these structures as depicted in the details. While typically not encountered in coastal systems, the presence of rock in the structures will maintain grade control and stability throughout the channel. This restoration will be a Priority I restoration. Restoring sinuosity will lengthen the channel, thereby lowering its slope. This change in profile will provide a more appropriate hydraulic connection of bankfull flow and the historic floodplain. The restoration design will result in a riffle-pool system with proper pattern and profile. 15 Two smaller tributaries are proposed for construction to accommodate discharges from the herbaceous marsh zones located to the east and west of the channel. These tributaries will have a steeper gradient than the main channel, due in large part to the drop in elevation associated with conveying discharges from the non-riverine zone elevation to the lower elevation associated with the new floodplain (riverine wetland) and the channel invert along the main restoration reach. Erosion control matting (coir matting), temporary seeding, and live stakes will be utilized to reduce bank erosion immediately following completion of the channel and provide bank stabilization. 7.3.2 Channel Competency Determination The mean depth required to maintain natural channel sediment transport without aggradation or degradation was predicted using a critical dimensionless shear stress formula. The two commonly used methods used to calculate the critical shear stress are from ED Andrews: Using the Pavement to Subpavement Ratio: Tep* = 0.0834(D50,bed1D50,bor)-0.872 Equation A Using the Surface Materials Ratio: Tef* = 0.0384(D;/D50,bed)-0887 Equation B Where: Tei* = Critical dimensionless shear stress D50,bed = Median diameter of the active riffle bed material (mm) D50,bar = Median diameter of the bar sample or subpavement sample (assumes that the median bar sample is approximately equal to the mean subpavement particle) (mm) D; = Largest particle diameter from bar or subpavement sample (mm) To determine which equation will be used, the ratio of D50,bed/D50,bar is calculated. If this ratio falls between 3 and 7, then Equation A is employed. Otherwise, the ratio of Di/D50,bed is calculated. If this ratio falls between 1.3 and 3, then Equation B is employed. In this project, Equation A was appropriate. 16 Once the critical dimensionless shear stress is obtained, the required depth is calculated using the Shields relation: Where: dbkf = (T i* YS Di)/S dbkf = Bankfull mean depth required to move largest particle (D;) (ft.) D; = Largest particle diameter from bar or subpavement sample (ft.) YS = Submerged specific weight of sediment (1.65) (dimensionless) S = Water surface slope (ft./ft.) In this case, a necessary mean bankfull depth of 0.88 ft was calculated, so the dbkfof 0.69 ft will be sufficient. 7.3.3 In-Stream Structures As mentioned previously, in order to provide grade control for the restored reach, rock and log cross-vanes and j-hooks (with or without steps), will be integrated within the final design and will be utilized to reinforce and stabilize the proposed channel. All structures will be constructed out of natural materials typically consisting of locally quarried boulders or logs. The upstream side of these structures will be lined with a non-woven fabric and backfilled with excavated channel material and in some cases imported stone aggregate to improve stability and reduce the potential for piping. In-stream structures such as these concentrate stream energy toward the center of the channel and away from the near-bank areas. In doing so, the structure reduces shear stress along the banks and prevents bank erosion. These structures serve as grade control within the bed of the channel and reduce the potential of head cutting, create a stable width/depth ratio (wbkf /dbkf), and promote sediment transport capacity. Proposed structure locations are shown in figures describing the plan and profile of the restored channel and typical structure drawings are shown in Figures 8 through 15. A representative of S&EC will be on site to observe and direct channel restoration efforts including the installation of in-stream structures. 7.4 Planned Hydrologic Modifications Hydrologic modifications, including site grading, will proceed in accordance with Figure 7. Grading will be performed in a manner to restore wetland hydrology by modifying existing site grades in selected areas while simultaneously enabling lateral surface flow across the site. 17 Restoration of wetland hydrology to the site will be accomplished by reversing the effect of the existing drainage system and restoring the stream channel through the site, thereby returning wetland hydrology to the majority of the site. Existing ditches will be filled to grade and the dimension, pattern, and profile of the channelized stream will be altered to restore natural stream morphology to the channel. Riverine wetland areas will be restored along the length of the restored channel. If necessary, the currently installed upland groundwater monitoring gauges and the rain gauge will be temporarily removed during construction operations. The reference groundwater gauges will remain in place. The rain gauge will be temporarily relocated to allow for the collection of data throughout construction operations. 7.5 Wetland Vegetative Community Restoration Three planting zones will be established on site. Each of the units are discussed in further detail below. 7.5.1 Riverine Planting Zone A riverine planting zone will be established along the restored stream channel from the top of bank outward toward the outer edge of the newly restored floodplain (a minimum of 50 feet). This unit will occupy the lower elevations established onsite via grading. Inundation of this area is anticipated to occur on a frequent basis. The Riverine reference wetland (previously described) was used as a template when developing this planting zone. Tables 1 and 2 display the tree and shrub species that will be incorporated into this planting zone. Figure 18 shows the proposed planting plan, and Figure 19 shows typical planting details. These areas will be seeded and planted with the appropriate native riverine vegetation and will provide channel stability and treatment of surface waters traveling laterally through the buffer. Species will consist primarily of native trees and shrubs. Select planting of herbaceous species may also be recommended during final design. 18 Riverine Tree Planting List Scientific Name Common Name Fraxinus pennsylvanica Green Ash Acer rubrum Red Maple Ulmus americana American Elm Quercus phellos Willow Oak Quercus nigra Water Oak Nyssa biflora Swamp Tupelo Table 1: Riverine Tree Planting List * Species composition may be adjusted based on local availability. Tree species individuals will be planted randomly on an 8 ft. by 8 ft. spacing in order to ensure a desired planting density of 680 stems per acre. This will increase the potential for the desired 5-year survivability density of at least 260 stems per acre. Site planting will include a minimum of five of the tree species in the table above. Riverine Shrub Planting List Scientific Name Common Name Myrica cerifera Wax Myrtle Persea borbonia Swamp Bay Cephalanthus occidentalis Buttonbush Magnolia virginiana Sweet Bay Cyrilla racemiflora Titi Table 2: Riverine Shrub Planting * Species composition may be adjusted based on local availability. Shrub species will be planted at a higher density and closer spacing (6 ft. by 6 ft.) to achieve a desired planting density of approximately 1,200 shrubs per acre here 19 again improving the potential for the desired 5-year survivability. Site planting will include a minimum of three of the shrubs listed in the table above. The restored stream channel banks will be planted with the appropriate channel bank species in the form of bare-root seedlings, potted and balled and burlap plants, and transplants. Native trees and shrubs that are available elsewhere on site will be removed with as much of the root ball intact and transplanted adjacent to the restored channel or in the floodplain. During the following fall, supplemental shrub and tree species will be planted if survival rates of previously planted seedlings are below target densities as determined in mid-summer (June- July). Vegetation will be supplied by locally identified plant sources or purchased from local, reputable nurseries. Other sources, outside of the local area, may be used depending on the availability of plant material. Please refer to the attached Planting Plan, Planting Details, and Planting Schedules regarding quantities and other details for the riverine planting zone. NOTE: All plantings performed on site will adhere to the NCEEP planting specifications. 7.5.2 Non-Riverine Planting Zone A non-riverine planting zone will be established outside of the newly restored floodplain across the remainder of the restoration site, as shown on the Planting Plan. The Non-Riverine reference wetland (previously described) was used as a template when developing this planting zone. Tables 3 and 4 display the tree and shrub species that will be incorporated into this planting zone. Non-Riverine Tree Planting List Scientific Name Common Name Fraxinus pennsylvanica Green Ash Acer rubrum Red Maple Platanus occidentalis Sycamore Quercus michauxii Swamp Chestnut Oak Quercus pagoda Cherrybark Oak Quercus phellos Willow Oak Liriodendron tulipifera Tulip Poplar Table 3: Non-Riverine Tree Planting List * Species composition may be adjusted based on local availability. 20 Non-Riverine Shrub Planting List Scientific Name Common Name Cephalanthus occidentalis Buttonbush Magnolia virginiana Sweet Bay Carpinus caroliniana American Hornbeam Clethra alnifolia Coast Pepper-Bush Cyrilla racemiflora Titi Rhododendron viscosum Swamp Azalea Table 4: Non-Riverine Shrub Planting * Species composition may be adjusted based on local availability. The spacing and density used for the planting of trees and shrubs within the non- riverine zone will be similar to those described above. Please refer to the attached Planting Plan, Planting Details, and Planting Schedules regarding quantities and other details for the non-riverine planting zone. NOTE: All plantings performed on site will adhere to the NCEEP planting specifications. 7.5.3 Herbaceous Planting Zones Multiple herbaceous planting zones will be planted as part of the overall wetland restoration plan. Micro-topographic complexity will be emphasized within the riverine planting zone in order to maximize habitat diversity. Small, shallow backwater pockets and emergent marsh zones will be dug during grading, and later densely planted (2 ft. by 2 ft. spacing) with the following floating and rooted aquatic species: White Water Lily (Nymphaea odorata), Broad-Leaf Arrow-Head (Sagittaria latifolia), Lizard's Tail (Saururus cernuus), Pickerel Weed (Pontedaria cordata), Yellow Cow-Lily (Nuphar luteum), and Stiff Arrow-Head (Sagittaria rigida). Within the non-riverine wetland area, two emergent marsh wetland areas will be graded along the general alignment of the existing site drainage ditches. These areas will allow for diversity within the non-riverine areas allowing for the creation of pockets of standing water suitable for herbaceous growth. These 21 marsh areas within the non-riparian wetland will be planted with live propagules and bare-root seedlings (at a 2 ft. by 2 ft. spacing) of Uptight Sedge (Carex stricta), Soft Rush (Juncus effusus), Olney's Bulrush (Scirpus americanus), Wool-Grass (Scirpus cyperinus), and Soft-Stem Bulrush (Scirpus validus). Temporary and/or permanent seeding measures (brown top millet, rye grass, or the most appropriate erosion control grass as dictated by the season) will be applied to areas disturbed during grading operations to allow for localized stabilization while riverine species establish themselves. A representative of S&EC will be on site to observe and direct planting efforts associated with the site. Details of the proposed restoration planting plan are included on Figures 18 and 19. 7.6 Soil Restoration During grading of site, topsoil will be removed and stockpiled. Topsoil is to be redistributed across planting areas during final grading. Topsoil will be stored in an appropriate manner by contractor to avoid erosion and off site sedimentation. Based on existing site uses and our understanding of previous site modifications we have no indication that underlying site soils are overly compacted. Accordingly current plans do not call for specific modification or soil restoration efforts (amendments and/or scarification) of the existing site soils once grading operations are complete. If however, upon completion of grading operations, areas of compacted soils are observed, localized restoration efforts may be employed i.e.: scarification, addition of topsoil, mulch, or other organics. Amendments will not be added to areas where inundation may occur and transport this material off site. 7.7 Removal of Invasive or Undesirable Species During site preparation, an effort will be made to remove existing exotic/invasive vegetation within project boundaries. Invasive species will be field-identified by S&EC staff. The construction contractor will mechanically remove invasive species and/or treat them locally with a glyphosate-based herbicide. Subsequent site visits will be performed following construction to evaluate the regrowth of invasives and perform spot treatments as needed. 7.8 Erosion & Sediment Control Since the total disturbed/denuded area as a result of restoration plan implementation will clearly exceed one (1.0) acre, an Erosion and Sediment (E&S) Control Permit will be required. Sediment and erosion control measures will be installed by the Contractor prior to commencing site grading activities. Due to the proximity of grading operations to the adjacent open waters and site ditches, extra care should be employed by the contractor to check all E&S control measures at the end of each day and make necessary repairs or additions. Contractor should also inspect all E&S control measures after periods of extended rainfall or significant rainfall events (>0.5 inches). Contractor should repair and stabilize exposed surfaces immediately, and 22 remove and properly dispose of accumulated sediment in turbidity curtain, silt fence, etc. after these events. Site E&S control measures will include silt fence, rock check dams, matting, pumping operations, special (temporary) stilling basins, and temporary and permanent seeding. The contractor shall employ the following E&S control sequence prior to grading: Erosion and Sedimentation Control Seauence 1. Establish staging area as directed by the project manager and designer. Contractor will be responsible for installing necessary E&S control measures at staging area (equipment parking area stabilization, silt fence, or other measures as contractor deems necessary). Establish temporary construction entrances to site. 2. Install sediment and erosion control measures including silt fence and temporary rock check dams as shown. 3. Demolish existing structure and remove wood, metal, concrete debris, refuse, and other materials as specified in the site's demolition plan. Clear and grub in required areas for stream and wetland restoration grading and planting. Contractor shall remove existing site culverts as construction progresses to allow for continued access to portions of the site. 4. Temporary seeding will be applied to areas that are not at final grade and will be exposed for greater than two (2) weeks. 5. Install temporary pump around operations (rock check dams, bypass pump, dewatering pump, and special stilling basin) as seeded during stream construction. Matting must be placed over every excavated channel section at the end of each workday and before the pump is turned off. 6. After final grading is complete, permanent seeding will be applied to all exposed areas. Seeding must be applied to all exposed areas within fifteen (15) days after construction. Erosion control matting will be applied to all final graded sloped steeper than 2H:1 V. Permanent seeding and matting will be installed incrementally as soon as an area reaches final grade. 7. Remove temporary sediment and erosion control measures. Silt fence must not be removed until seed is placed and temporary grass has germinated. The contractor shall remove accumulated sediment prior to removal of silt fence or other measures. This E&S control sequence is also reflected in the plan sheets. Also refer to the Construction Sequence, Sediment and Erosion Control Plan, and Sediment and Erosion Control Details sheets attached. 7.9 Construction Sequence 23 All aspects of site construction and planting operations will be supervised by a qualified representative of Soil & Environmental Consultants, PA (S&EC). The daily sequence of events shall be determined and approved by S&EC professional staff. It will be the Contractor's responsibility to have the appropriate equipment and personnel on site to perform the tasks based on the project schedule. If potential conflicts arise, the Contractor shall notify the Designer immediately so that adjustments can be made. The following construction sequence shall be used during construction: Construction Sequence 1. Obtain local authority approval and all necessary State and Federal permits for construction. 2. Contact NC One Call to locate and mark existing utilities on site. 3. Establish staging area as shown on the plans. Contractor will be responsible for installing necessary E&S control measures at staging area (parking area stabilization, silt fence, or other measures as contractor deems necessary). Mobilize equipment and materials to the staging area. Establish temporary construction entrances to site. 4. Install sediment and erosion control measures including silt fencing, check dams, and turbidity/silt curtain. Install utility and tree protection (if necessary) fencing as directed by Designer. Contractor may utilize existing site ditch crossing locations (if desired) at own risk. 5. Remove wood, metal, concrete debris, refuse, and other materials as specified in the site's Demolition Plan. Clear and grub in required areas for wetland area grading and planting. Remove trees as well as exotic and invasive species as directed by the Designer. 6. Install pump around operation including the installation of special stilling basin(s). 7. Verify channel grading depths and extents. Initiate grading of stream channel and adjacent floodplain area working from upstream end of restoration reach in a downstream direction. Install in-stream structures, matting, temporary seeding, and live stakes. Grade floodplain area. Remove pump around operation and direct flow into excavated channel. Matting must be placed over every excavated channel section at the end of each workday and before the pump is turned off. 8. Verify wetland grading depths and extents. Fill existing site ditches and level grade wetland area as described on plans. Apply temporary sediment and erosion control seeding measures. 9. Perform riverine and non-riverine wetland planting. Apply permanent seeding measures. 24 10. Remove temporary sediment and erosion control measures after groundcover is established and site is stabilized. 11. Conduct final site inspection with the Contractor, NCEEP, and Designer. 7.10 Future Site Maintenance A site tour should be performed after the completion of construction and permanent seeding and planting. Representatives from the design firm, and NCEEP should attend this tour to see the boundaries of site planting and discuss future site maintenance operations that will ensure the protection of trees, shrubs, and plants installed as part of this project. 25 8.0 STREAM & WETLAND SUCCESS CRITERIA & MONITORING PLAN This section includes information concerning stream and wetland restoration success criteria, physical evaluation of the site, and the proposed monitoring schedule. 8.1 Stream Restoration Monitoring Success criteria for stream stability will be met if, for the 5 year period after construction, the stream bed form features and cross-sections remain stable (i.e. the stream retains its restored Rosgen stream-type classification). During the monitoring period, no less than two bankfull flow events must be documented. If less than two bankfull events occur during the 5 year monitoring period, monitoring will continue until the second bankfull event is documented. The bankfull events must occur during separate monitoring years. 8.1.1 Physical Monitoring An as-built engineering survey of the site will be conducted upon completion of the site restoration work to ensure that site grading work was performed in a manner consistent with the restoration plan. The as-built report will include the constructed stream channel dimension, pattern, and longitudinal profile. This data collected by Total Station will be utilized as a baseline to compare future monitoring surveys and subsequently to determine annual channel stability and transition. Cross-section locations to be monitored will be established immediately following construction during the completion of the "as built" survey. Permanently established cross-sections located approximately every 500 to700 feet (depending on final construction) that will comprise of a nested riffle and pool segment. Each cross-section will be monumented and located for future identification and survey work. All of these cross-sectional surveys will also be utilized as photographic points. Other stream channel measurements that will be completed during the annual monitoring exercised will include pebble counts, stream pattern data, and stream- side plant conditions. Annual inspection of in-stream rock and log vane and j- hook structures will also occur to insure channel stability. The restoration reach will be walked and observed for indications of deterioration or failure of any components of the restoration. Stream channel monitoring surveys will be completed annually for five consecutive years, starting the year following the completion of the project. 26 8.1.2 Vegetative Monitoring Vegetative success criteria of 50% coverage will be required at the end of the five (5) year period for the live stakes installed in channel banks of each of the restored reaches. Details of the monitoring are included in the following section. 8.1.3 Biological Monitoring We understand that channel benthic macroinvertebrate monitoring will be sampled and monitored by NCEEP under a separate contract. 8.2 Wetland Restoration Monitoring In order to ensure hydrologic and vegetative success, groundwater elevation and planting monitoring will be conducted annually on site for a 5-year period in accordance with the Stream Mitigation Guidelines (April 2003). The monitoring period will commence immediately upon the completion of site construction and planting efforts. 8.2.1 Hydrologic Success Criteria As previously noted, the Infinities USA, Inc., groundwater monitoring gages will remain in place or be re-installed immediately following the completion of site grading and planting operations. Six (6) gauges will be installed on site, two (2) within the newly restored riverine wetland boundary, and four (4) across the remaining non-riverine areas. The existing site rain gauge will be relocated and remain on site during the monitoring period. In order to meet wetland hydrology, the groundwater elevation will need to be measured within the upper twelve (12) inches of the ground surface for a period of consecutive days equal to or greater than 8.5% of the growing season. According to the Perquimans County Soil Survey, the average growing season (number of frost-free days) is approximately 214 days long, lasting from April 1St to November 1 S` of each year. Accordingly, a groundwater monitoring gauge will be considered to meet hydrologic success criteria if hydrology is met for a period of 18 straight days (rounded down from 18.2 days) during the growing season. It should be noted that while this system is primarily groundwater driven, we do expect occasional, sporadic inundation from the restored channel to affect hydrologic conditions within the restored riverine wetland corridor. 8.2.2 Vegetative Success Criteria Twelve (12) vegetation plots will be established onsite. Six (6) tree and shrub 10- meter square sample plots will be established, each plot offset 2 meters from each gauge positioned within the restoration area. Typically in order for the site to be considered a success, the survivability rate of planted vegetation should be 320 27 stems per acre through year three. A ten percent mortality rate is accepted in year four (288 stems per acre) and another ten percent in year five resulting in a required survival rate of 260 5-year old stems per acre in year five with no one species comprising more than 20% of the total stem count. Exceeding the 20% threshold alone, however, will not serve as criteria for deeming the restoration unsuccessful. Four (4) 2-meter square herbaceous monitoring plots will be established, two (2) within the riverine emergent marsh areas and two (2) within the non-riverine emergent marsh areas. Vegetative success criteria of 50% coverage will be required at the end of the 5-year period for the herbaceous planting zones. This coverage will be qualitatively evaluated based on observation of the planted areas. Two (2) bank planting plots measuring 20 meters in length and encompassing both banks will be established in order to evaluate the success of live stakes along the banks of the restoration. Vegetative success criteria of 50% coverage will be required at the end of the 5-year period. This coverage will be qualitatively evaluated based on observation of the planted areas. During monitoring site visits an evaluation of invasive or undesirable species will be performed and recommendations made regarding necessary removal or treatments. 8.2.3 Physical Success An as-built engineering survey of the site will be conducted upon completion of the site restoration work to ensure that site grading and planting work was performed in a manner consistent with the approved Restoration Plan. During site monitoring visits, the site will be walked and all graded areas will be inspected for stability. If areas of instability are observed, they will be noted and repair recommendations prepared. A photographic record of the site will be collected during each site visit. Photo points will be located at key locations on site and at the corners of established vegetative monitoring plots. 8.3 Monitoring Schedule As previously described, to ensure a stable restored channel morphology (dimension, pattern, and profile), and hydrologic and vegetative success, success monitoring will be conducted annually on site for a period of five (5) years from the implementation of the restoration plan. The site will be visited on a quarterly basis. During each of these site visits groundwater monitoring gauges and the rain gauge will be downloaded and gauges evaluated to ensure proper function. A plant survivability survey will be performed during the growing season (June to July timeframe) on each of the six (6) tree and shrub vegetation plots (2 riverine and 4 non-riverine) , four (4) herbaceous vegetation plots (2 riverine and 2 non- 28 riverine), and two (2) bank planting plots. During site visits a general evaluation (by observation) of the site will be performed and record photographs will be taken. An Annual Monitoring Report will be prepared at the end of each year of monitoring. This report will be submitted to EEP for review not later than 60 days from the end of the monitoring period (December 31 of the monitoring year). The monitoring report will summarize the general site conditions, a channel evaluation, the results of hydrologic and vegetative monitoring, and recommendations for necessary maintenance. 29 • 01 N rroject Date: • Mgr.: PS 02-2 1-05 I I ": 2.4 miles Figure I - Vicinity Map Watts Farm Percluimans, County, NC i Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com Mgr.: P5 02-21-05 Figure 2 - USGS Nixonton Quad Watts Farm Percluiman5 County, NC & Environmental Consultants, P 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com Site Boundary N Watershed Boundary \ M y ? i Al? ,. (uul ?,? ? J_ •1 y „ ' . v ?.. . _. ._ ...? ... + :Y ... ._ . ..___.--..._._J*? ... _ + .. A ; /t r S' L ? •( M .?` --- - --??_ ? ?, _ is ?' WRR - Watts Reference Riparian WRN - Watts Reference Non-Riparian N Project N: Scale: FI ure 4 - Reference 8099.D I 1 ": 4000 9 Project Date: 51te5 U5G5 Nlxonton Mgr.: P5 02-2 1-05 Quad 19, Watts Farm Perqulman5 County, NC Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com II I I ! I I ?I Project N: Scale: 8099.D I I ': 2000' FI9ure 5 - Reference Project Date: 5Ite5 Percluiman5 County Mgr.: P5 02-21-05 Soil Survey Watts Farm Percquiman5 County, NC Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com WRR - Watts Reference Riparian WRN - Watts Reference Non-Riparian N NOTES: 1. TOPOGRAPHIC DATA DEVELOPED BY LIMITED ENGINEERING SURVEY PERFORMED BY S*EC USING TOTAL STATION. 2. ALL CONTOURS ARE APPROXIMATE AND BASED ON ASSUMED ELEVATION OF 100.00'. 3. THIS IS NOT A BOUNDARY SURVEY AND IS NOT FOR RECORDATION, CONVEYANCE, OR SALES. EXISTING AGRICULTURAL STORAGE SHED EXISTING FEEDER DITCHES LEGEND RG? 51TE RAIN GAUGE V 51TE GROUND WATER GAUGE CHANNEL OR DITCH FLOW DIRECTION PHOTOGRAPH NUMBER (SEE PHOT05 APPENDIX) EXISTING CULVERT PIPE IN DRAINAGE NETWORK ©2005 Sod ? Environmental Consultants, PA. All nght5 reserved. I UTILITY POLES EXPECTED LINES UTILITY 9g EASEMENT 75M = 99.8 NA,, MAG. 1979 F0IV-KFCLE NORMA DRIVE DB 15G PG G54 ? (GRAVEL ROAD SCALE p99 ®ah W_ I ? A4 ` 200 100 0 200 CONTOUR INTERVAL = I' ALL CONTOURS SHOWN ARE EXISTING EXISTING RG0CHANNEL W-2 A? EXISTING I FEEDER DITCHES n m • W- W- 0 pl, o_ W9 r ?O W-G 99 O ? V, SITE BOUNDARY EXISTING CULVERTED FARM CR055W6, TYPICAL, ALL PIPES TO BE REMOVED EXISTING 51TE CONDITIONS o? 8 zoo u Z ? n 1YC 0 _ V N w z = 0 Q O Il..? u L I p z ? ? 0 b l (r) U 1 ? w z W C ) N ? Z Z a? ?Q q V g ?U N 0Z4 Ga V1 ?(L ? ~n SITE BOUNDARY EMERGENT MARSH WETLAND AREA NON-RIVERINE WETLAND BOUNDARY APPROXIMATE RIVERINE WETLAND BOUNDARY NORMA DRIVE (GRAVEL ROAD) ENT MARSH LAND AREA MAG. 1979 D5 15G PG G54 5CALE 200 100 0 200 CONTOUR INTERVAL = I - ALL CONTOUR5 5HOWN ARE EXI5TING ALL SITE FEEDER DITCHES TO BE BACKFILLED AND LEVEL GRADED TOPOGRAPHIC HIGH POINTS TO BE LEVEL GRADED EMERGENT MARSH WETLAND AREA SITE BOUNDARY -3 ? °o N .. Z?? II z° ? m u? i2 u= u ok NJ L Q z =? o w0 u N O ? ZO a 0Zz 0 0 •u a/ 0 Lu CL Q) (s) g Z `? w 0 w o ~ V a d? a? n 00 h ISE a Vg U N Vi z 43 5 Soil * Environmental Con5UItant5, PA. All rights reserved. P RO P05 E D 51 T E CONDITION 5 * INDEX MAP 40 20 0 40 CONTOUR INTERVAL = I' ALL CONTOURS 5HOWN ARE EXI5TING PR MATE RIVERINE WETLAND BOUNDARY a h / ? TIE RESTORED !\ CHANNEL TO EXISTING ? U/S INVERT ? ELEV. 95.58 NOTE: STRUCTURE LOCATION, TYPE, AND NUMBER ARE APPROXIMATE AND M BE MODIFIED BY ENGINEER AT E OF CONSTRUCTION. gg LEGEND ?.? LOG J-HOOK (LJt1) LOG CROSS VANE (LCV) CM o Qj R `t m ku of o u U J Q z UZ OZ W § Z w, 0 N ?Q 0 M N w o ?Z Q-/ b ? Z U QJ N N W Lu 0 ? o (L? a? a V° a? Ne xSKB U i z Ox 79 a u 9 a PROP05ED 2005 Sod Environmental Consultants, PA. All r9ht5 reserved. STREAM RE5TORATI ON LAYOUT I NOTE: I Fr`I~AIn APPROXIMATE RIVERINE WETLAND BOUNDARY © 2005 Sod * Environmental Con5ultant5, PA. All rights reserved PROPOSED RESTORED ?c9 CHANNEL CENTERLINE D? NORTH J 5CALf 0 20 0 40 CONTOUR INTERVAL = I' CONTOUR5 SHOWN A INS PROP05ED STREAM RESTORATION LAYOUT 11 o ? 2 zp.. It o ?'0 L Ll U O Z z Q Z U ?4- Q J ?w0_ z l?Y. I- z 7- ? 0Lij -/ z 0 w gN LU w 0 > o Lu a? a ?a ov V° a? 10 N oz a? a ?a ?a STRUCTURE LOCATION, TYPE, AND NUMBER ARE APPROXIMATE AND MAY BE MODIFIED BY ENGINEER AT TIME OF CONSTRUCTION. EX TING PIPE T BE RE OVED SCALE `o 3 0 ZO`N Z o p? o ? U- U ? n 40 20 0 40 ct 'L n U) CONTOUR INTERVAL = I' i --- ALL CONTOURS SHOWN ARE EXISTING Wa F0 A+ m? F- 2 W O WW Q 7 ZQ O o = g ? Z (n u 0 NORTH o 99 ??z o 000 w 2 o tix EX15T1 NG 24" Q CMP CULV Q ° INL LEV. lu? APPROXIMATE 91.40' o ? N RIVERINE m a WETLAND BOUNDARY a NOTE: + STRUCTURE LOCATION, TYPE, AND q 3 NUMBER ARE APPROXIMATE AND MAY V BE MODIFIED BY ENGINEER AT TIME +? a $ OF CONSTRUCTION. N U ?f W Z s LEGEND LL x PROP05ED LOG J-HOOK (LJH) A RESTORED o CHANNEL CENTERLINE LOG CROSS q VANE (LCV) ?s 0 0 © 2005 5od Environmental Con5Ultant5, PA. All rights reserved. P RO P05 E D STREAM RE5T0 RATI 0 N LAYOUT III STATION BED NV T BU VAT N FACET STRUCTURE INVERT STRUCTURE TYPE 0+00 95.6 96.9 RIFFLE 0+03 95.9 96.9 RUN 96.0 LCV 0+10 95.5 9G.9 POOL 0+19 9G.3 9G.9 RIFFLE 0+74 9G.2 9G.8 RIFFLE 0+80 95.8 9G.8 RUN 0+88 95.4 9G.8 POOL 0+98 9G.2 9G.8 RIFFLE I + I G 9G.2 9G.8 RIFFLE 1+25 95.8 9G.8 RUN 95.9 Lill 1+34 95.4 9G.8 POOL 1+51 9G. I 9G.7 RIFFLE 1+72 9G. I 9G.7 RIFFLE 1+84 95.7 9G.7 RUN 1+93 95.3 9G.7 POOL 2+05 9G.1 9G.7 RIFFLE 2+25 9G.0 9G.G RIFFLE 2+34 95.G 9G.G RUN 2+43 95.2 9G.G POOL 2+G I 9G.0 9G.G RIFFLE 2+73 9G.0 9G.G RIFFLE 105 z 95 Q IL I W 85 0+00 0+50 STATION BED INVERT BKF F-LEVATION FACET STRUCTURE INVERT 5TRUCTURE TYPE 2+81 95.6 96.6 RUN 95.7 LJH 2+89 95.2 96.6 POOL 3+02 95.9 9G.5 RIFFLE 3+19 95.9 9G.5 RIFFLE 3+30 95.5 9G.5 RUN 3+35 95.1 9G.5 POOL 3+52 95.9 9G.5 RIFFLE 3+G5 95.9 9G.5 RIFFLE 3+77 95.4 9G.4 RUN 3+85 95.0 9G.4 POOL 3+9G 95.8 9G.4 RIFFLE 4+1 G 95.8 9G.4 RIFFLE 4+2G 95.4 9G.4 RUN 95.5 LJH 4+37 95.0 9G.4 POOL 4+55 95.7 9G.3 RIFFLE 4+G9 95.7 9G.3 RIFFLE 4+87 95.3 9G.3 RUN 4+9G 94.9 9G.3 POOL 5+15 95.7 9G.3 RIFFLE 5+37 95.G 9G.2 RIFFLE 5+45 95.2 9G.2 RUN STATION BED INVERT 13KF VATI N FACET STRUCTURE IN T STRUCTURE TYPE 5+54 94.8 96.2 POOL 5+72 95.6 96.2 RIFFLE 5+88 95.G 9G.2 RIFFLE G+01 95.2 9G.2 RUN 95.3 LJH G+1 1 94.7 9G. I POOL G+25 95.5 9G.1 RIFFLE 6+41 95.5 9G.1 RIFFLE G+51 95.1 9G.1 RUN G+GO 94.7 9G.1 POOL G+74 95.5 9G.I RIFFLE G+88 95.4 9G.0 RIFFLE G+98 95.0 9G.0 RUN 7+0G 94.G 9G.0 POOL 7+21 95.4 9G.0 RIFFLE 7+35 95.4 9G.0 RIFFLE 7+45 95.0 9G.0 RUN 95.1 LJH 7+55 94.G 9G.0 POOL 7+GG 95.3 95.9 RIFFLE 7+82 95.3 95.9 RIFFLE 7+93 94.9 95.9 RUN 8+01 94.5 95.9 POOL 1+00 1+50 2+00 2+50 3+00 3+50 4+00 4+50 5+00 STATION - - - - PROPOSED BANKFULL PROPOSED THALWEG 5TRUCTURELOCATION 431©2005 Sod 4 Environmental Consultants, PA. All rights reserved. 5+50 G+00 G+50 7+00 7+50 8+00 LCV = LOG CRO55 VANE LJH = LOG J-HOOK PROP05ED STREAM LONGITUINAL PROFILE I c 0 a ZO O N Z - aN o ? mQ ? ? v '0 - a {t} o -I LL Z z 0 W 0 Z ? 0 o W ? U-i Q' Cz U z - Z 0 Q O > ? 0 ? ;; n- a? a aQ Ov V? Npy xSe? z Oz a? a a ?e V1 Z 0 `3 O Q6j OL tU z0? Nz - ?Q STATION BED INVERT BKF VATI N FACET STRUCTURE INVERT STRUCTURE 8+20 95.3 95.9 RIFFLE 8+39 95.2 95.8 RIFFLE 8+45 94.8 95.8 RUN 8+54 94.4 95.8 POOL 8+72 95.2 95.8 RIFFLE 8+90 95.2 95.8 RIFFLE 9+02 94.8 95.8 RUN 94.9 LJH 9+13 94.4 95.8 POOL 9+28 95.1 95.7 RIFFLE 9+4G 95.1 95.7 RIFFLE 9+52 94.7 95.7 RUN 9+GO 94.3 95.7 POOL 9+7G 95.1 95.7 RIFFLE 9+92 95.1 95.7 RIFFLE I0+01 94.G 95.G RUN 10+10 94.2 95.G POOL 10+24 95.0 95.G RIFFLE 10+45 95.0 95.G RIFFLE I0+55 94.G 95.G RUN 94.7 LJH IO+GG 94.2 95.6 POOL 10+85 94.9 95.5 RIFFLE STATION BED IN T BKF ELEVATION FACET STRUCTURE IN T STRUCTURE TYPE 1 1+02 94.9 95.5 RIFFLE 1 1+14 94.5 95.5 RUN 1 1+23 94.1 95.5 POOL 1 1+40 94.9 95.5 RIFFLE I I +G3 94.8 95.4 RIFFLE 1 1+73 94.4 95.4 RUN 1 1+51 94.0 95.4 POOL I 1 +98 94.8 95.4 RIFFLE 12+18 94.8 95.4 RIFFLE 12+30 94.3 95.3 RUN 94.4 LJH 12+40 93.9 95.3 POOL 12+53 94.7 95.3 RIFFLE 12+70 94.7 95.3 RIFFLE 12+79 94.3 95.3 RUN 12+88 93.9 95.3 POOL 13+03 94.G 95.2 RIFFLE 13+18 94.G 95.2 RIFFLE 13+27 94.2 95.2 RUN 13+35 93.8 95.2 POOL 13+47 94.G 95.2 RIFFLE 13+G4 94.G 95.2 RIFFLE STATION B D I WE T ATIO FACET STRUCTURE STRUCTURE 13+71 94.2 95.2 RUN 13+81 93.7 95.1 POOL 3+93 94.5 95.1 RIFFLE 14+10 94.5 95.1 RIFFLE 14+22 94.1 95.1 RUN 94.2 LJH 14+30 93.7 95.1 POOL 14+41 94.5 95.1 RIFFLE 14+G4 94.4 95.0 RIFFLE 14+7G 94.0 95.0 RUN 14+84 93.G 95.0 POOL 15+04 94.4 95.0 RIFFLE 15+21 94.4 95.0 RIFFLE 15+33 93.9 94.9 RUN 15+41 93.5 94.9 POOL 15+55 94.3 94.9 RIFFLE 15+75 94.3 94.9 RIFFLE 15+82 93.9 94.9 RUN 94.0 LJH 15+89 93.5 94.9 POOL I G+08 94.3 94.9 RIFFLE I G+23 94.2 94.8 RIFFLE I G+30 93.8 94.8 RUN o - 4Q- oW Uz Q z xU zQ wQ ? m/ vQ- ? J N oC u z 0 I) D w W U F- w ? z U Z O ? 0 Q Ntu-Q Q?Q 0 0 > 0 w tL 9 0' a N N a? ?V a fill a OV V° N z Ox a? Wa v a V1 105 z Q 95 Q w J w 85 8+00 8+50 9+00 9+50 10+00 10+50 11+00 11+50 12+00 12+50 13+00 13+50 14+00 14+50 15+00 15+50 1 G+00 STATION - - - - PROPOSED BANKFULL LCV =LOG CR055 VANE PROPOSED THALWEG LJI1 =LOG J-HOOK STRUCTURE LOCATION '61© 2005 Sod 4 Environmental Consultants, PA. All rights reserved. PROP05ED STREAM LONGITU I NAL PROFI LE I I o 3 0 o6 z 0 ` f) L : m D _ n? LL7 a- ? I V STATION BED INVERT BKF ELEVATION FACET STRUCTURE INVEKT STRUCTURE TYPE 16+38 93.4 94.8 POOL 16+51 94.2 94.8 RIFFLE I6+66 94.2 94.8 RIFFLE 16+75 93.8 94.8 RUN 16+82 93.4 94.8 POOL 16+98 94.1 94.7 RIFFLE 17+ 16 94.1 94.7 RIFFLE 17+26 93.7 94.7 RUN 93.8 Lim 17+33 93.3 94.7 POOL 17+50 94.1 94.7 RIFFLE 17+67 94.0 94.6 RIFFLE 17+76 93.6 94.6 RUN 17+86 93.2 94.6 POOL 18+02 94.0 94.6 RIFFLE 18+21 94.0 94.6 RIFFLE 18+36 93.6 94.6 RUN 18+44 93.1 94.5 POOL 18+62 93.9 94.5 RIFFLE 18+82 93.9 94.5 RIFFLE 18+94 93.5 94.5 RUN 93.6 uH 19+03 93.1 94.5 POOL 105 0 95 Q W J W 85 STATION BED INVERT BKF ELEVATION FACET STRUCTURE INVERT STRUCTURE TYPE 19+22 93.8 94.4 RIFFLE 19+42 93.8 94.4 RIFFLE 19+53 93.4 94.4 RUN 19+60 93.0 94.4 POOL 19+78 93.8 94.4 RIFFLE 19+97 93.7 94.3 RIFFLE 20+09 93.3 94.3 RUN 20+13 92.9 94.3 POOL 20+36 93.7 94.3 RJFFLE 20+54 93.7 94.3 RIFFLE 20+66 93.3 94.3 RUN 20+75 92.8 94.2 POOL 20+89 93.6 94.2 RIFFLE 21+07 93.6 94.2 RIFFLE 21 + 15 93.2 94.2 RUN 93.3 Lim 21+23 92.8 94.2 POOL 21+41 93.6 94.2 RIFFLE 21+55 93.5 94.1 RIFFLE 21 +61 93.1 94.1 RUN 21+72 92.7 94.1 POOL 21 +88 93.5 94.1 RIFFLE STATION BED INVERT BKF V I FACET STRUCTURE T STRUCTURE TYPE 21+88 93.5 94.1 RIFFLE 22+02 93.5 94.1 RIFFLE 22+10 93.1 94.1 RUN 22+15 92.7 94.1 POOL 22+34 93.4 94.0 RIFFLE 22+46 93.4 94.0 RIFFLE 22+55 93.0 94.0 RUN 93.1 LCV 22+64 92.6 94.0 POOL 22+81 93.4 94.0 RIFFLE 19+50 20+00 20+50 21+00 21+50 22+00 2+50 23+00 STATION PROPOSED BANKFULL LCV = LOG CRO55 VANE PROPOSED THALWEG LJH =LOG J-HOOK 5TRUCTURELOCATION 1©2005 Soil * Environmental Con5Ultant5, PA. All rights reserved. PROPOSED STREAM LONGITUINAL PROFILE III pw _J wt L zzz? 0 Q z LLIC) w n- (n u Q 0 0 W W ILQCz 0 0 . Z O 0 a) Q cn?Q N 0 0 w tL U ? d` ? N a? w d? ^ w ?I Ov V$ "Mill a ' a _G ? N x iC z Ox a ?a ? e V1 ° ?o IG+00 IG+50 17+00 17+50 18+00 18+50 19+00 o€? 3 0=.. zo N ° - Vmf i2 oN ? ?? nQ u 6.15 BKF TYPICAL RIFFLE • BANKFULL CHANNEL WIDTH 6.15 FEET • RIFFLE CR055-5ECTION AREA 4.26 SQUARE FEET • RIFFLE MAX DEPTH 0.85 FEET • RIFFLE MEAN DEPTH 0.69 FEET NON-RIVERINE ZONE CREATED WETLANDS, EXCAVATE TO DEPTH OF APPROX. 12'-18°, BACKFILL WITH EXISTING 51TE WETLAND SOILS 7.60 BKF WETLAND SURFACE TO BE GRADED WITH MICRO-TOPOGRAPHIC VARIATION AS DETERMINED BY DESIGNER AT TIME OF CONSTRUCTION NEW FLOODPAIN * RIVERINEIWETLAND ZONE E FLOY Z ?\-PROP05ED BAIJKFULL WIDTH RESTORED STREAM CHANNEL TYPICAL POOL • BANKFULL CHANNEL WIDTH 7.60 FEET • POOL CR055-5ECTION AREA 6.96 SQUARE FEET • POOL MAX DEPTH 1.65 FEET • POOL MEAN DEPTH 0.92 FEET BANKFULL ELEVATION NON-RIVERINE ZONE VERNAL POOL w? NFNL Y? "olu ?aN Wu z i OZ W LU O u z ~ F " ? C1J T- N }N t ' F- C) N CIZI (f) W a/ 0 n- ? Z bU o ? 0 ?g (J? g tu- z Q Q p 0 > D- ?U- W C y o o ? i a4 4Q V1 ?_ 0 v Ug a? ?U n? Np 4 a z a? o? a Oa 10 2005 Sod Environmental Consultants, PA. All r,ghts reserved. TYPICAL RE5T0 RED CHANNEL * FL00 D P LAI N C 8055-5 ECTI 0 N 5 BANKFULL STAGE FLOW STREAM CHANNEL BED_---?!- 7777, ROCKS .. ,:, .. FOOTER PROFILE ANE ARM SCOUR POOL R LOi PLAN RIGHT BANK LOG J-HOOK * LOG CR055 VANE DETAIL CK055 5ECTION BANKFULL BENCH BASE FLOW WATER ELEVATION T-r- , r !I-11? ! 'i I? i I?=1II- -i (- PROFILE VIEW _-1 I 1-1 I!- 111111i ANGLE-CUT END • LIVE STAKES INSTALLED IN BANK WITH DEAD-BLOW HAMMER • 415 OF STAKE IN GROUND • BUDS ORIENTED UPWARDS • 3' CENTERS (APPROX.) • CUT EXPOSED END OF LIVE STAKE AFTER INSTALLATION IF DAMAGED DUE TO INSTALLATION (i.e. damaged bark, split ends, etc.) LIVE STAKE PLANTING DETAIL (NOT TO 5CALE) (NOT TO 5CALE) COIR MATTING BASE FLOW VATER ELE VAT PROFILE VIEW BANKFULL BENCH Ill l1 ill I - I -I 12' ECO-STAKE ?- 24"ECO-STAKE0 2? PLAN MUN I VIM o ?? 3 Zo e ( Z - ? a E o v o GEOTEXTILE FABRIC 0 is ECO-STAKE TRENCHED TOP OF MATTING TO A DEPTH OF AT LEAST 12', STAKE OR STAPLE IN PLACE, E BACKFILL TO DESIGN GRADE • MINIMUM 24" ECO-5TAKE50 INSTALLED ALONG TOE OF MATTING (Intercept between water surface and bank) • MINIMUM 2' CENTERS ALONG BOTTOM • 12' ECO-5TAKESO INSTALLED IN BANK • MINIMUM I' OVERLAP AT JOINING FLUSH WITH COIR MATTING ABOVE SECTIONS OF COIR MATTING BOTTOM ROW OF 24" ECO-5TAKESO • ECO-STAKE50 SPACED AT MAXIMUM 3' CENTERS (APPROX.) COIR MATTING DETAIL (NOT TO 5CALE) XTILE FABRIC ?lM ANCHOR LOG NOTES: MATTING MUST BE PLACED OVER EVERY EXCAVATED CHANNEL SECTION AT THE END OF EACH WORKDAY AND BEFORE THE PUMP IS TURNED OFF. H0 < o u7 U Z c w C) Z < ?J J lY V C 0 ? IZ N ? z LOG E a C) O O u Q a? ?Q a a? V° a? N9 a^? 4) Oz u ' VJ i i N_----- TYPICAL STRUCTURE, LIVE STAKE, COIR MATTING DETAILS o?? 3 . 6 ` O0 .. oD? oQ ? ? SPECIAL STILLING BASIN NOTES: I . EXCAVATION SHALL BE PERFORMED IN ONLY DRY 5ECTION5 OF CHANNEL. 2. IMPERVIOUS DIKES SHOULD BE USED TO ISOLATE WORK AREAS FROM STREAM FLOW. 20 EXISTING GROUND 3. THE CONTRACTOR SHALL NOT DISTURB MORE AREA THAN CAN BE STABILIZED IN _ ONE WORKING DAY. MATTING MUST BE PLACED OVER EVERY EXCAVATED CHANNEL ?} of N SPECIAL STILLING BASIN SECTION AT THE END OF EVERY WORKDAY AND BEFORE THE PUMP 15 TURNED OFF. o v J FILTER FABRIC 15-20 FT-+i (AS DIRECTED AT THE 4. PUMP AROUND SHOULD BE ABLE TO CONVEY MINIMUM OF I CF5 PER MI2 OF z o u Q FOR DRAINAGE TEMPORARY SPLASH PA F W DRAINAGE AREA TO SITE UNLESS OTHERWISE STATED IN SPECIFICATIONS. Q z= {NON-WOVEN) (SEE DETAIL LOCATE TIME OF CONSTRUCTION) ? O Z AS AT THE DEWATERING PUMP SEQUENCE OF CONSTRUCTION FOR TYPICAL PUMP AROUND t SPECIAL STILLING BASIN TIME OFDCIONSTRUCTION) (NOT TO SCALE) I . INSTALL SPECIAL STILLING BASINS AT THE DOWNSTREAM END OF THE DESIGNATED GRAVEL CHECK PROJECT WOMNG AREA. DAM AT CHANNEL TEMPORA Y 2. THE CONTRACTOR WILL INSTALL THE PUMP AROUND PUMP AND THE TEMPORARY W LU U Z TERMINUS FLEXIBLE PIPING THAT WILL CONVEY THE BASE FLOW FROM UPSTREAM OF THE WORK 51TE TO THE Z EX151NG SPECIAL 5TILLLING BASIN. 0 ° O CHANNEL WORKING 3. INSTALL UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING OPERATIONS FOR STREAM Z 0 AREA DIVERSION. z SANDBAG15TONE? BASEFLOW g Z O 4. INSTALL THE DOWNSTREAM IMPERVIOUS DIKE AND PUMPING APPARATUS IF NEEDED TO WORKING TEMPORARY PIPING DEWATER THE ENTRAPPED AREA. THE PUMP AND HOSE FOR THIS PURPOSE SHALL BE OF < N SUFFICIENT SIZE TO DEWATER THE WORK AREA. THIS WATER WILL ALSO FLOW INTO A AREA SPECIAL STILLING BASIN. Q 5. THE CONTRACTOR WILL PERFORM STREAM RESTORATION WORK IN ACCORDANCE WITH > W THE PLAN AND FOLLOWING THE GENERAL CONSTRUCTION SEQUENCE. FILTER FABRIC FOR DRAINAGE IMPERVIOUS SHEET IMPERVIOUS DIKE G. THE CONTRACTOR WILL EXCAVATE ANY ACCUMULATED SEDIMENT AND DEWATER BEFORE (NON-WOVEN) 4 (LOCATE AS REMOVAL OF THE IMPERVIOUS DIKE. REMOVE IMPERVIOUS DIKES, PUMPS, AND PUMP AROUND PUMP1 F W DIRECTED AT TEMPORARY FLEXIBLE HO5FJPIPING STARTING WITH THE DOWNSTREAM DIKE FIRST. IMPERVIOUS DIKE THE TIME OF 7. ONCE THE WORKING AREA IS COMPLETED, REMOVE THE STILLING BASINS AND STABILIZE CONSTRUCTION) DISTURBED AREAS AS SHOWN ON PLANS. e (NOT TO SCALE) a See Cofferdam Detail for Specific Construction Requirements a of Temporary Cofferdam (Impervious Dike) TYPICAL PUMP AROUND OPERATION (NOT TO SCALE) ? V TEMPORARY SEEDING 5PECINCATION5 V a L ? N General Seeding Mulch 3 Areas where no substantial or significant progress is made for Mulching shall consist of small grain straw applied at a rate ?y Seedinq Dates Seeding 5peoe5 Rate (Ibs/acre) of 70 lb5./1000 ft. Mulched areas shall be mechanicall M z n more than 15 days should be temporarily seeded as 5q. ft. follows. All areas should be seeded, mulched, and tacked. May I -Aug. 15 German Millet 40 tacked in place (or other approved tacking method). iOr y Incidental shall not constitute substantial or si mficant Aug. 15 May I Rye (gram) 60 grading g No asphalt shall be used for tacking. Use jute, excelsior e progress in construction activity. Seeding and mulching shall matting or similar material to cover exposed areas of be done immediately following construction. All disturbed concentrated flow. x areas shall be dressed to a depth of 8 mche5. The top 3 3 inches shall be pulverized to provide a uniform seedbed. Soil Amendments Maintenance a follow recommendations of sod tests or apply 2,000 Ib5lacre Inspect and repair mulch frequently. Refertdize and reseed as ground agricultural limestone and 750 Ibs/acre 10-10-10 required to maintain vigorous temporary vegetative cover o fertilizer, during construction. 0 m a m . r; m 0 N EROSION CONTROL DETAILS I 02005 Sod Environmental Consultants, PA. All rights re5erved. o€? 3 0= .. zo" N z - BIBnNG SLOPE NOTES: HEIGHT t WIDTH DETERMINED BY EXISTING TOPOGRAPHY AND SEDIMENT STORAGE REQUIRED. KEY RIP RAP INTO THE DAM FOR STABILIZATION. 057 SECTION VIEW PROFILE VIEW TEMPORARY CHECK DAM (NOT TO SCALE) 02005 Sod * Environmental Consultants, PA. All rights reserved. 'M 0.5-P MOM rAMC Min. 10 Gauge Line Wires SECTION VIEW F[2D PUP W TEMPORARY COFFERDAM MULTI-U5E CONFIGURATION (NOT TO SCALE) 0' LA_" Min. 12-1/2 Gauge Intermediate Wires rade G" Min. Cover Over Skirt ichor Skirt as rected by Engineer/ signer STANDARD TEMPORARY SILT FENCE DETAIL (NOT TO SCALE) EIZ0510N CONTROL DETAI L511 RFMMC NOTES: HEIGHT 4 WIDTH DETERMINED BY EXISTING TOPOGRAPHY AND SEDIMENT STORAGE REQUIRED. KEY RIP RAP INTO THE DAM FOR STABILIZATION. TEMPORARY 5PLA5H PAD DETAIL (NOT TO SCALE) Steel Post wen Wire Fabric It Fence Fabric NOTES: SILT FENCE MUST NOT BE REMOVED UNTIL SEEDING IS PLACED AND TEMPORARY GRASS HAS GROWN. Z0 Hd ?u _ Q Z Z? Q ? C, N i ?7_ 0 0 bLI (f) Lu t z zZ ? U 0C O ELI D_ Z N?Q 0 Q0 w W C 0 0 1~V 0 ? V ? N a9 a? Ov V? a N d? a V1 PROFILE VIEW FRONT VIEW PLANTING LEGEND RIVERINE EMERGENT MARSH SPECIES RVERINE TREE * SHRUB SPECIES MIX NON-RIVERINE TREE SPECIES NON-RIVERINE EMERGENT MARSH SPECIES W NON-RIVERINE W F SHRUB SPECIES NOTE: RES TORED 5TREAMBANK5 TO BE PLANTED WI LIVE STAKES SITE BOUNDARY EMERGENT MARSH WETLAND AREA NON-RIVERINE WETLAND BOUNDARY EM APPROXIMATE RIVERINE WETLAND BOUNDARY 61© 2005 Sod * Environmental Consultants, PA. All Sod * Environmental Consultants, PA. All ENT MA h - 1` -LAND AREA .r ?- / ROPOSED NEW CHANNEL reserved. t NORMA DRIVE (GRAVEL ROAD) ENT MARSH LAND AREA PROPOSED NEW CHANNEL 51TE PLANTING PLAN 6 om o d IL ? 00 N w V .co = MAG, 1979 7 o DI5 15G PG G54 a SCAM Q Z o Q Z O z 200 100 0 200 N CONTOUR INTERVAL= 1' 0 Z ALL CONTOURS SHOWN ARE EXISTING Z LU LU z 00p 0 Q' W to ? Q N 3 ? EMERGENT MARSH o N WETLAND AREA a ?dv ^ w ? oq ?LT a N • z 1. oz SITE BOUNDARY q M 8 V1 ° D €' 3 o 6 ` Os .. zoo NNZ - °??? mQ u BE / MULCH: (3") AVG. THICKNESS lz_ PREPARED ADMIXTURE BACKFILL OR NATIVE SOIL TAMPED ADMIXTURE BACKFILL DECIDUOUS TREE PLANTING - CONTAINERIZED (NOT TO SCALE) 2 3 Open planting Place bare-root Close hole with hole with seedling in hole - Shovel or Auger- Shovel or Auger root collar at no air space surface around roots BARE-ROOT SEEDLING PLANTING DETAIL (NOT TO SCALE) TII WOODEN STP NOWBIODEGRADABLE t SHRUB PLANTING - CONTAINERIZED (NOT TO SCALE) TREE SHELTER W1 BASE APPROX. I' INTO GROUND TREE SHELTER DETAIL TO BE INSTALLED ON ALL BARE-ROOT AND CONTAINERIZED PLANTED TREES (NOT TO SCALE) MATERIAL SHALL BE - TOTALLY REMOVED. TOPSOIL MI TAMPED ED - - ADMIXTURE - - - BACKFILL TREE TAPE (3 AVOID TIGHT TAPING AS IT PREVENTS NATURAL SWAY CROWN OF ROOT BALL SHALL BE SET SLIGHTLY ABOVE GRADE. MULCH: (3') AVG. THICKNESS STAKES (3) REMOVE RBPEIS/3 OF BURLAPALL SHALL BE CUT PREPARED ADMIXTURE BACKFILL OR NATIVE SOIL TAMPED ADMIXTURE BACKFILL DECIDUOUS TREE PLANTING - BALL t BURLAP (NOT TO SCALE) 20 0, 4}} N < Q o" ' Q Z 0 UZ Z ? U Z W n/ LY. W ?- (? ? u QZ J 0 - 0 ? CL 0 Z W J 0 O Q ? Z U = W N N a Z_ I- Lu ° g 0 C. a? ?y w a V? N a 6 z ?Oy z a. w? ?a 6 V1 ©2005 Sod 4 Environmental Consultants, PA. All rights reserved. PLANTING 5C H ED U LE * PLANTING DETAI L5 APPENDIX A Site Photographs Watts Farm Restoration S&EC Project: 8099.D1 0 equipment shed and residences in background. Appendix A April 25, 2005 Photo 10-Existing drainage ditch discharging to upstream end of restoration reach (looking west). Photo 9-Existing condition of restoration reach looking downstream (north). Note Watts Farm Restoration • S&EC Project: 8099.1) 1 Photo 1-Existing stream immediately downstream of road crossing, note canal to the is Little River in background. LJ erty. Appendix A April 25, 2005 Photo 2-Existing road crossing (24" diameter CCP) looking upstream onto the prop- Watts Farm Restoration is S&EC Project: 8099.1) 1 • ter CCP). • Appendix A April 25, 2005 Photo 3-Upstream end of existing road crossing, near northern end of site (24" diame- Photo 4-Existing stream (near downstream end) looking upstream (south) towards woodline. Note equipment shed on right side of photo. Watts Farm Restoration • S&EC Project: 8099.D1 Photo 5-Existing side drainage ditch near north end of side parcel looking west towards woodline. Appendix A April 25, 2005 Photo 6-Existing property looking east towards woodline. Note Infinities Groundwa- ter Gauge in center of photo. Watts Farm Restoration S&EC Project: 8099.D1 0 Appendix A April 25, 2005 40 Photo 8-Existing stream (upstream end) looking upstream (south) towards woodline. Photo 7-Existing property looking south (upstream) towards woodline. Watts Farm Restoration • S&EC Project: 8099.D1 0 (looking east). Appendix A April 25, 2005 Photo 11-Existing drainage ditch discharging to upstream end of restoration reach APPENDIX B Reference Stream & Wetland Photographs • • 0 Watts Farm Restoration S&EC Project: 8099.131 Appendix B April 25, 2005 Photo 1-Reference reach cross-section #1, looking upstream. Photo 2-Reference reach cross-section #2, looking upstream. Watts Farm Restoration S&EC Project: 8099.D1 • • Appendix B April 25, 2005 Photo 3-Riverine Reference Wetland (Gauge 1) Photo 4-Riverine Reference Wetland (Gauge 2) Watts Farm Restoration • S&EC Project: 8099.D1 • 0 Appendix B April 25, 2005 Photo 5-Non-riverine Reference Wetland (Gauge 1) APPENDIX C Preliminary Site Groundwater Data Watts Stream and Wetland Restoration Site Monitoring Gauge Data Comparison January 2004 to June 2004 0 -5 -10 -15 -20 0 -25 0 1.. -30 CL - 0 -35 G -0 `. -40 -45 0 0 0 c c c r 00 Ul) Ir-I 0 I cu 3 N 0 1 cu ) N 0 0 It UL U- U- LO N 0 0 0 0 0 0 0 0 L L L L L L L 0- 0- CL LL G G < Q Q t0 4 co U') co LO N r- r- N ? Day of Monitoring Period 0 0 It L L Q. 0- CC I O N N 0 5cu G 0 N C1 5CU ? ` I h ? N 0 I O 00 ? N -* W1 -n- W2 -x W3 )- W4 W5 W6 Watts Stream and Wetland Restoration Site Monitoring Gauge Data Comparison July 2004 to December 2004 0 -5 N Oft -10 -15 L H ? _ -20 0 -25 0 r 3 -30 0 4 -35 -40 -45 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 rn rn rn Q Q Q - rn a a a a :3 (D a) () a) Q U) a a? N Q O 0 U>>>> 0 0 0 0 a) a) a) O O z z z z o 0 o ? 00 N N N N N 01 r r CO N CO t? (v e- N O ti M ? 00 to N Q) C.0 N N N Day of Monitoring Period * W1 -¦- W2 ( W3 )K W4 W5 + W6 APPENDIX D Site Rainfall Data 3.00 y 2.50 r '- 2.00 c? c? O 1.50 1.00 c? D 0.50 0.00 1,& I L I IL IL I L M E 1 1 1 1 1 11 .1 j I L 1 : 1 ;I L- UI L-A ll 0 0 0 0 C C C C 0 C 0 n 0 6 0 16 0 0 0 0 0 0 L L L L 0 0 L 0 0 L 0 0 0 0 0 0 0 0 cu cu cu cu cu . a) LL - a) LL - Q) LL a) LL cu cc M M a- Q CL a- Q Q Q a CL Q cu M cc >, C cu C C c 3 00 LO N N C6 N LO N ?- 0) (0 N V r 00 In r- I- N co LO T- N N CY) N (0 M ? O N ? N O 4 ?- N Day of Monitoring Period Watts Stream and Wetland Restoration Site Site Rainfall Gauge Data JanuaOry 2004 to June 2004 3.00 2.50 N 4) r V ? 2.00 C D 1.50 C 1.00 0.50 0.00 Watts Stream and Wetland Restoration Site Site Rainfall Gauge Data July 2004 to December 2004 v v Iq ? ? ? ? ? "t ? ? It Iq Iq Iq ? ? v IV ?t ?t 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I 1 1 I 1 1 3? 7 5 rn 6 m 6 a a a a a >>>> :3 :3 :3 :3 Q Q (L) (1) (1) 0 0 0 0 0 0 0 0 m a? a? o L6 N rn to N (n Q (n CO CIO CO CI) e, Z Z Z Z IT- N O N O C4 CO O 6 4 r 00 6 N O (D N IT- N M N N N r Day of Monitoring Period APPENDIX E Stream Morphological Characteristics Data Table Watts Farm Restoration S&EC Project No. 8099.D1 Appendix I April 25, 2005 Values EXISTING E6 P ROPOSED C6 REFE RENCE REACH E6 Variable Min Avg Max Min Av Max Min Avg Max Flood prone Width ft 8.63 19.75 28.15 26.7 27.48 28.2 42.99 43.55 44.11 Riffle Area S ft 4.16 4.24 4.31 4.02 4.23 4.49 8.06 8.12 8.18 Max Riffle Depth ft 1.36 1.59 1.73 2.71 2.94 3.17 2.71 2.94 3.17 Mean Riffle Depth ft 0.79 0.96 1.04 .57 0.58 0.6 0.94 0.96 0.97 Riffle Width ft 4.08 4.47 5.35 7.06 7.29 7.48 8.4 8.48 8.56 Pool Area S ft 5.1 6.0 7.2 13.95 13.95 13.95 13.95 13.95 13.95 Max Pool Depth ft 1.54 1.66 1.76 3.06 3.2 3.58 3.06 3.2 3.58 Mean Pool Depth ft 1.04 1.12 1.13 0.98 0.98 0.98 0.98 0.98 0.98 Pool Width ft 4.89 5.34 6.42 14.28 14.28 14.28 14.28 14.28 14.28 Dimensi onless Rat ios Variable Min Avg Max Min Avg Max Min Avg Max Wfpa / Wbkf 1.93 4.41834 6.29754 3.78 3.76 3.77 5.07 5.13561 5.20165 Pool Area / Abkf 1.23 1.42 1.67 1.71798 1.71798 1.71798 1.71798 1.71798 1.71798 Max Pool Depth / Dbkf 1.60417 1.72917 1.83333 3.1875 3.33333 3.72917 3.1875 3.33333 3.72917 Mean Pool Depth / Dbkf 1.09 1.17 1.32 11.97 12.52 13 1.02083 1.02083 1.02083 Pool Width / Wbkf 1.19 1.19 1.20 1.68396 1.68396 1.68396 1.68396 1.68396 1.68396 Values EXISTING PROPOSED REFERENCE REACH Variable Min Av Max Min Av Max Min Av Max Sinuosity 1.1 1.52 1.27 Meander Wavelength ft 500 600 700 66.69 70.66 74.65 34.81 103.74 240.88 Table 1: Existing, Reference and Proposed Stream Morphological Characteristics Page 1 of 3 Watts Farm Restoration S&EC Project No. 8099.D1 Appendix E April 25, 2005 Radius of Curvature ft 40 45 50 13.32 15.59 18.9 3.46 17.12 43.84 Belt Width ft 40 50 60 22.48 34.35 43.24 78.76 78.76 78.76 Dimensi onless Rat ios Variable Min Avg Max Min Avg Max Min Avg Max Lm / W bkf 111.8568 134.2282 156.5996 8.44177 8.9443 9.44937 4.10495 12.23349 28.40566 Rc / W bkf 8.94855 10.06711 11.18568 1.68608 1.97342 2.39241 0.40802 2.01887 5.16981 Wblt / Wbkf MWR 8.94855 11.18568 13.42282 2.84557 4.3481 5.47342 9.28774 9.28774 9.28774 Values EXISTING PROPOSED REFERENCE REACH Variable Min Av Max Min Avg Max Min Avg Max S riffle ft/ft 0.0016 0.00217 0.00272 0.0001 0.0014 0.00364 0.0001 0.0014 0.00364 S pool ft/ft 0 0.00014 0.00043 0 0.00047 0.00127 0 0.00047 0.00127 P - P ft 0 64.51 332.07 36.23 49.98 73.21 36.23 49.98 73.21 P length ft 0 67.13 332.07 29.94 53.41 8.22 29.94 53.41 Dmax riffle ft 1.36 1.59 1.73 L 2.94 3.17 2.71 2.94 3.17 Dmax ool ft 1.54 1.66 1.76 O6 3.2 3.58 3.06 3.2 3.58 Dimesionless Ratios Variable Min Avg Max Min Av Max Min Avg Max S riffle / S bkf ft/ft 0.73733 1 1.25346 0.08571 1 2.6 0.08571 1 2.6 S pool / S bkf ft/ft 0 0.06452 0.19816 0 0.33571 0.90714 0 0.33571 0.90714 P - P /W bkf ft 0 14.43177 74.28859 4.27241 5.89387 8.63325 4.27241 5.89387 8.63325 P length / W bkf ft 0 15.0179 74.28859 0.96934 3.53066 6.29835 0.96934 3.53066 6.29835 Dmax riffle / D bkf ft 1.41667 1.65625 1.80208 2.82292 3.0625 3.30208 2.82292 3.0625 3.30208 Dmax pool / D bkf ft 1.60417 1.72917 1.83333 3.1875 3.33333 3.72917 3.1875 3.33333 3.72917 Bankfull Slope ft/ft 0.00217 0.0014 0.0014 Table 1: Existing, Reference and Proposed Stream Morphological Characteristics Page 2 of 3 Watts Farm Restoration S&EC Project No. 8099.D1 Appendix E April 25, 2005 Table 1: Existing, Reference and Proposed Stream Morphological Characteristics Page 3 of 3 APPENDIX F Existing Conditions Stream Data Watts Farm Restoration S&EC Project No. 8099.13 1 1 C O tf? N W XS 1 Existing O Oround Point ? BanidUli Indicators Ybkf - 5.4 Dbkf - .S ? Water Surface Points Abkf - 4.2 Horizontal Distance (ft) Appendix F April 25, 2005 Existine Conditions Stream Data Page 1 of 4 0 10 20 30 40 Watts Farm Restoration S&EC Project No. 8099.D1 XS 2 EXISTING a Oround Points i BanMUII Indicators ? Water Surface Points Ybkf - 4.3 Dbkf - 1 Abkf - 4.2 C O t'R'S N W Horizontal Distance (ft) Appendix F April 25, 2005 Existing Conditions Stream Data Page 2 of 4 0 5 10 15 20 25 30 Watts Farm Restoration S&EC Project No. 8099.D1 o Oround Points Ybkf - 4.1 97 c O -6:. ca N W 90 XS 3 Existing ? BanMUII Indicators Dbkf - 1 ? Water Surface Points Abkf - 4.2 Horizontal Distance (ft) Existing Conditions Stream Data Page 3 of 4 Appendix F April 25, 2005 0 5 10 15 20 25 30 Watts Farm Restoration S&EC Project No. 8099.1311 XS 4 EXISTING O Oround Points ? Banidull Indicators V Water Surface Paints 1lbkf - 4.2 Obkf - 1 Abkf - 4.3 C 0 N w Horizontal Distance (ft) Appendix F April 25, 2005 Existine Conditions Stream Data Page 4 of 4 0 5 10 15 20 25 30 APPENDIX G Reference Reach Stream Data Watts Farm Restoration S&EC Project No. 8099.D1 C O t[t N ni d Oround Points 4lbkf - 8.5 Reference XS 1 ? BanidUll Indicators Dbkf - I ? Water Surface Points Abkf - 8.2 Horizontal Distance (ft) Reference Reach Stream Data Page 1 of 2 Appendix G April 25, 2005 -9 -4 0 4 9 13 17 22 26 31 35 39 44 48 Watts Farm Restoration S&EC Project No. 8099.D1 C O of N ,IV 0 Oround Points Wbkf = 8.5 Reference XS 2 ? BanIdUII Indicators Dbkf - .4 ? Water Surface Points Abkf - 8 Horizontal Distance (ft) Reference Reach Stream Data Page 2 of 2 Appendix G April 25, 2005 -9 -4 0 4 9 13 18 22 27 31 36 40 45 49 APPENDIX H Proposed Conditions Stream Data Watts Farm Restoration S&EC Project No. 8099.1) 1 Proposed Typical Riffle o Oround Points ? BanIdUll Indicators ? Water Surface Points Wbkf = 7.2 Obkf - .6 Abkf - 4.2 1 c O tLf N W Horizontal Distance (ft) Appendix H April 25, 2005 Proposed Conditions Stream Data Page i of 2 0 5 10 15 20 25 30 Watts Farm Restoration S&EC Project No. 8099.D1 Proposed Typical Pool O Oround Points ? Bervidull Indicators ? Water Surface Points 4lbkf - 11.2 Dbkf - .9 Abkf - 10.6 C O t? N W Horizontal Distance (ft) Appendix H April 25, 2005 Proposed Conditions Stream Data Page 2 of 2 0 10 20 30 40 APPENDIX I State Historic Preservation Office (SHPO) Letter Mme, MAR 1 4 2005 North Carolina Department of Cultural Resources State Historic Preservation Office Peter B. Sandbeck, Adnunistrator Michael F. Easley, Governor Office of Archives and History Lisbeth C. Evans, Secretary Division of Historical Resources Jeffrey J. Crow, Deputy Secretary David Brook, Director March 9, 2005 Jessica Regan Soil & Environmental Consultants, PA 11010 Raven Ridge Road Raleigh, NC 27614 Re: Watts Farm Restoration Site, Perquimans County, ER 05-0373 Dear Ms. Regan: Thank you for your letter of February 15, 2005, concerning the above project. We have conducted a review of the proposed undertaking and are aware of no historic resources which would be affected by the project. Therefore, we have no comment on the undertaking 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, contact Renee Gledhill-Earley, environmental review coordinator, at 919/733-4763. In all future communication concerning this project, please cite the above referenced tracking number. Sincerely, eter B. Sandbeck Location Mailing Address Telephone/Fart ADMINISTRATION 507 N. Blount Street, Raleigh NC 4617 Mad Service Center, Raleigh NC 27699-4617 (919)733-4763/733-8653 RESTORATION 515 N. Blount Street, Raleigh NC 4617 Mad Service Center, Raleigh NC 27699-4617 (919)733-6547/715-4801 SURVEY do PLANNING 515 N. Blount Street, Raleigh, NC 4617 Mail Service Center, Raleigh NC 27699-4617 (919)733.6545/715-4801 APPENDIX J Perquimans County Floodplain Coordination Letter Soil & Environmental Consultants, PA 11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: (919) 846-5900 • Fax: (919) 846-9467 www.SandEC.com June 20, 2005 S&EC Project No. 8099.1) 1 Perquimans County Planning Department P.O. Box 45 Hertford, NC 27944 Attn: Mr. William Ethridge & Mr. Zeke Jackson Reference: Watts Stream & Wetland Restoration Project Minor Grading Win 100-yr Floodplain Perquimans County, NC Dear Sirs: As discussed in our telephone conversations, Soil & Environmental Consultants, PA is currently developing a Stream and Wetland Restoration plan for the Watts Property in Perquimans County. This North Carolina Ecosystem Enhancement Program (NCEEP) funded project consisting of approximately 48 acres is shown on the enclosed location map. Proposed restoration efforts will include restoring an agricultural ditch to a naturally meandering stream. Plans also call for minor floodplain grading and the filling of agricultural drainage ditches to restore wetland hydrology throughout the property. The entire site will be-planted with appropriate riparian and wetland vegetative species. This site is located within the 100-year floodplain as determined by the North Carolina Floodplain Mapping Program (see enclosed floodplain map). Please advise what additional information the County will require to approve the construction of this project within the 100-year floodplain. If the County approves these restoration efforts without Page 1 of 2 Watts Stream & Wetland Restoration June 20, 2005 Soil & Environmental Consultants, PA Project No. 8099.D1 additional information, please provide a written response indicating approval for use in project permitting. We thank you for your assistance in this matter and look forward to the successful completion of this project. Please contact me if you have any questions or comments. SOIL & ENVIRONMENTAL CONSULTANTS, PA Sincerely, Rebecca S. Wargo, EIT Project Engineer Attachments: 1. Project Location Map 2. USGS Vicinity Map 3. Floodplain Map Cc: Tracey Morris - NCEEP Salam Murtada, NCEEP Page 2 of 2 0I • ?.+ 34 r-.?r"C+' M ?1 t:z _ , ? y , y w .r- i?.m ?K a ' (?9 N J?! ' ". 4 {I 'f J S' ? ?? ? , ? ; ? ? , ??? t 7r? ? ? ? ' 'f? .?.: -.1?.? , ; F - ; ? ,? 'C?' ???? ? ? ? ••? ?),? I 1 .. + Z' ? ? ?r+• ?d.'? - t ;? 7 / ? j i? ,?? '? { ? \ ` y ir } irt ?k . ^t ryP ?1 {` Fj + IXA ! 7 1 ` YYB v N robed t: 8099.) I Scale: 1': 2.4 miles Figure I - Vicinity Map rroject Mgr.: P5 Date: 02-21-05 Watts Farm Percqulman5 County, NC Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www.SandEC.com f i 1 i t I • • • v ti, •? , 44' O a-* CIO A ' N f 6 Project 0: 099. )1 8099.D1 1 "?: 1': 4000 FI ure 2 - USGS 9 N Project Date: uconton Quad Mgr.: PS 02-21-05 Watts Farm Perclulman5 County, NC c Site Boundary Watershed Boundary i ? i IR I Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Web Page: www,SandEC.com 0 • L - *& ? A .7 iviap output Page 1 of 1 1_u._./l1 An 110 1 n1 0 I-__-_1 njmr%nz 'po ot:p 1 o e4l MEMORANDUM: TO: FROM: SUBJECT: DATE: Cyndi Karoly Salam Murtada Permit Application- Watts Property Stream and Wetland Restoration July 14, 2005 Attached for your review are 2 restoration plans (1 sent to Washington Regional Office) for the Watts Property Stream and Wetland Restoration Project in Perquimans County. Please feel free to call me with any questions regarding this plan (715-1972). Thank you very much for your assistance. attachment: Restoration Plan (2 originals) D 19 kf-L;:-?5k LS 0 v D JUL 1 9 2005 TUNE R - BITER QUALITY ORMWATER BRANCH NCDENR North Caroling Ecosysterrn Enhaneernent Program, 1652 Mail Service (uit^r, Raleigh, NC 27699-1652 l M-715-0476 1 www.nceep.net