Loading...
HomeMy WebLinkAbout20080417 Ver 1_Application_20080307~~~~ ~.Q~~. STATE OF NORTH CAROLINA o~ ~~ ti1,q~, Q~ y~,, of ~ ~ ~~`'ay~s4'~. X40 lr/ '~'~s oTFRa 8 DEPARTMENT OF TRANSPORTATION MICHAEL F. EASLEY DIVISION OF HIGHWAYS LYNDO TIPPETT GOVERNOR SECRETARY March 3, 2008 Mr. Brian Wrenn 401/Transportation Permitting Unit 1650 Mail Service Center Raleigh, N.C. 27699-1650 080417 SUBJECT: I-77 Embankment/Shoreline Stabilization on Lake Norman, Iredell County Dear Mr. Wrenn: The North Carolina Department of Transportation proposes to stabilize the Interstate 77 road embankment slope/shoreline along Lake Norman in Iredell County. Approximately 250 feet of roadway embankment slope/shoreline will be stabilized utilizing a soil anchoring system. The soil anchoring system consists of the installation of an 11 Gage 2" galvanized chain link mesh over the road embankment slope and secured into place using anchors that will extend to a depth of 10-20 feet. Type I fabric and riprap will be utilized at the toe of the slope along the edge of Lake Norman. During project planning meetings on December 3, 2007 and February 6, 2008 with the regional Division of Water Quality representative, Ms. Polly Lespinasse, NCDOT has agreed to manually clear the embankment, leaving the trees to a height of ~ 2 inches, which should allow regrowth of vegetation. Additionally, jute matting and native seed mix will be utilized over the soil anchoring chain link mesh. Turbidity curtains will be utilized along the shoreline to contain any sediment disturbed during the installation of the riprap at the toe of the slope. I have enclosed apre-construction notification for a Water Quality Certification #3693, sketches of planned activities, slope stabilization special provision and location maps relative to the project. Project information for the 401 Automated Payment Procedure is as follows: • Work order number: 150461-55120005-12.104931-4671 • TIP #: NA • Project Category: $240.00 Fee I-77 Embankrrtent/Lake Norman Shoreline Stabilization Page 2 March 3, 2008 If you have any questions or concerns, please feel free to contact me at (704) 480-9044. Thank you for your time and consideration to this matter Respectfully yours, M.L. Holder, P.E. Division Engineer Twelfth Division BY: ~/ail%~ Trish Simon Division 12 Environmental Supervisor Enclosures Cc: Polly Lespinasse, DWQ, Mooresville Regional Office Office Use Only' Form Version March OS 2008041 7 USACE Action ID No. DWQ No. (If any particular item is not applicable to this project, pease enter °NOC Appucaoie- or ~~~~-+ .~ I. Processing 1. Check all of the approval(s) requested for this project: ^ Section 404 Permit ® Riparian or Watershed Buffer Rules ^ Section 10 Permit ^ Isolated Wetland Permit from DWQ ® 401 Water Quality Certification ^ Express 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: Regional General Permit 198200030 (WQC#3693) 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ^ 4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII, and check here: ^ 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), check here: ^ II. Applicant Information 1. Owner/Applicant Information Name: Mike Holder N.C. Department of Transportation Mailing Address: P.O. Box 47 Shelby North Carolina 28151 Telephone Number: 704-480-9020 E-mail Address: 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Trish Simon Company Affiliation: N C Department of Transportation Mailing Address: P.O. Box 47 Shelby North Carolina 28151 Telephone Number: 704-480-9044 Fax Number: 704-480-5401 E-mail Address: tsimon(c~dot.state.nc.us Fax Number: 704-480-5401 Page 1 of 8 III. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Interstate 77 Road Embankment Stabilization 2. T.I.P. Project Number or State Project Number (NCDOT Only): 12.104931 3. Property Identification Number (Tax PIN): NA 4. Location County: Iredell Nearest Town: Statesville Subdivision name (include phase/lot number): NA Directions to site (include road numbers/names, landmarks, etc.): From Statesville, I-77 to area immediately north of causeway at Iredell/Mecklenbur~ty line. 5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) Decimal Degrees (6 digits minimum): 35°31'09"°N 80°51'48"°W 6. Property size (acres): ~.23 acres 7. Name of nearest receiving body of water: Catawba River (Lake Norman below elevation 760 WS-IV & B CA (from Lyle Creek to Cowans Ford Dam). 8. River Basin: Catawba (Note -this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: Existing Conditions-Interstate highway embankment General Land Use- Highway and Residential Page 2 of 8 10. Describe the overall project in detail, including the type of equipment to be used. The North Carolina Department of Transportation proposes to stabilize the Interstate 77 road embankment slope and shoreline along_Lake Norman in Iredell County. Approximately 250 feet of roadway embankment slope and shoreline will be stabilized utilizing a soil anchoring system The soil anchoring_system consists of the installation of an 11 Gage 2" galvanized chain link mesh over the road embankment slope and secured into place using anchors that will extend to a d~th of 10-20 feet Type I fabric and riprap will be utilized at the toe of the slope along the edge of Lake Norman During_project planning meetings on December 3, 2007 and February 6 2008 with the regional Division of Water Quality representative, Ms. Polly Les~nasse NCDOT has agreed to manually clear the embankment, leaving the trees to a height of ~ 2 inches which should allow regrowth of vegetation. Additionally, lute matting and native seed mix will be utilized over the soil anchoring chain link mesh. Turbidity curtains will be utilized along the shoreline to contain any sediment disturbed during the installation of the riprap at the toe of the slope. Typical heavy equipment (cranes, trackhoe, backhoe etc) will be used for the construction of this project. 11. Explain the purpose of the proposed work: The purpose of the proposed work is to repair an eroding and sloughing interstate road embankment for the safety of the travelling public. 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.NA 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. No future permit requests are anticipated at this site. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. Each impact must be listed separately in the tables below (e.g., culvert installation should be listed separately from riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts, permanent and temporary, must be listed, and must be labeled and clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) should be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Page 3 of 8 Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Provide a written description of the proposed impacts: Permanent impacts from riprap stabilization. 2. Individually list wetland impacts. Types of impacts include, but are not limited to mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. Wetland Impact Type of Wetland Located within Distance to Area of Site Number Type of Impact (e.g., forested, marsh, 100-year Floodplain Nearest Stream Impact (acres) (indicate on map) herbaceous, bog, etc.) es/no linear feet Total Wetland Impact (acres) 0 3. List the total acreage (estimated) of all existing wetlands on the property: 0 4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. To calculate acreage, multi 1 len h X width, then divide b 43,560. Stream Impact Stream Perennial or Average Stream Width Impact Length Area of Number Name Type of Impact Intermittent? Before (linear feet) Impact (indicate on map) Im act (acres) Total Stream Impact (by length and acreage) 5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.). Open water impacts include, but are not limited to fill, excavation, dredging, flooding, drainage, bulkheads, etc. Open Water Impact Name of Waterbody Type of Waterbody Area of Site Number (if applicable) Type of Impact (lake, pond, estuary, sound, bay, Impact indicate on ma ocean, etc. (acres Catawba River (Lake Riprap Stabilization 1 Norman) along shoreline (below Lake .029 average high water) 1 Temporary Turbidity « Curtains .029 Total Open Water Impact (acres) 0 Page 4 of 8 6 List the cumulative im act to all Waters of the U.S. resultin from the ro'ect: Stream Im act (acres): Permanent 0 Wetland Impact (acres): 0 O en Water Im act acres): 0.029 Total Impact to Waters of the U.S. (acres) 0 Total Stream Im act (linear feet): 0 7. Isolated Waters Do any isolated waters exist on the property? ^ Yes ®No Describe all impacts to isolated waters, and include the type of water (wetland or stream) and the size of the proposed impact (acres or linear feet). Please note that this section only applies to waters that have specifically been determined to be isolated by the USACE. NA _ 8. Pond Creation NO POND CREATION IMPACTS 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.): Current land use in the vicinity of the pond: Size of watershed draining to pond: Expected pond surface area: VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The I-77 shoulder/emergency lane in the nronosed nroiect area is sloughing away from the travel lanes of I-77 due to the erosion of the Lake Norman shoreline along this section of roadway embankment. The eroding area along the waters edge and the road embankment needs to be stabilized to prevent the continued sloughing of the I-77 roadway. Per 15 NCAC 02B.0243 (Catawba River Basin Riparian Buffer Rules), shoreline stabilization is designated as an allowable activity 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. Page 5 of 8 USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on January 15, 2002, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o. enr. state.nc. us/ncwetlands/strmgide.html. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. NO MITIGATION ANTICIPATED. 2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at (919) 715-0476 to determine availability, and written approval from the NCEEP indicating that they are will to accept payment for the mitigation must be attached to this form. For additional information regarding the application process for the NCEEP, check the NCEEP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please check the appropriate box on page five and provide the following information: Amount of stream mitigation requested (linear feet): Amount of buffer mitigation requested (square feet): Amount of Riparian wetland mitigation requested (acres): Amount ofNon-riparian wetland mitigation requested (acres): Amount of Coastal wetland mitigation requested (acres): IX. Environmental Documentation (required by DWQ) Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land? Yes ® No ^ 2. If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Page 6 of 8 Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ^ No X. 3. If yes, has the document review been fmalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ^ No ^ Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. 1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ® No ^ 2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers.. Zone* Impact Multiplier Required (s uare feet) Miti ation 1 7500 3 (2 for Catawba) O 2 NA 1.5 NA Total 7500 0 * Zone 1 extends out 30 feet perpendicular from the top of the neaz bank of channel; Zone 2 extends an additiona120 feet from the edge of Zone 1. XI. 3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Riparian Buffer Restoration /Enhancement, or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0244, or .0260. NO BUFFER MITIGATION IS REQUIRED. Stormwater (required by DWQ) Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss Stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. If percent impervious surface exceeds 20%, please provide calculations demonstrating total proposed impervious level. No increase in impervious surface is proposed Page 7 of 8 XII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. No wastewater is generated from the project. XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ^ No Is this anafter-the-fact permit application? Yes ^ No XIV. Cumulative Impacts (required by DWQ) Will this project (based on past and reasonably anticipated future impacts) result in additional development, which could impact nearby downstream water quality? Yes ^ No If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent North Carolina Division of Water Quality policy posted on our website at http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: The interstate stabilization will not result in additional development of the surrounding area. XV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). NA Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 8 of 8 .,,E ~~~ . ~ ~ ~ 1 l Ili ii ,;~ . vKP IFI ~~ ,; i • f' I ~ ~~',Tl :• r. . ~ ~ , ,~ ~~~ 11i fil ~~ ti,., I ,, , s' ,,``` ``\~ ~ti ~~ .'i ~~ ~ lid I r f~`f •, r •,~) ~ ~ ~ I ~ i 1 ~t +1I~ ' 1 _. i i ~ ; ~' . ;~ t~ ~~attt, , ' I ~ ; ~ , ~ j ~~~ :., 1 '~, ~ .• ,r , 1101 ~` .. ~. }, `. ~ ~ ~. .,: _ e {, ~ y . ~, -77 Embankment ~.' . ~~ ;,' Stabilization -'/'.~`~' '~--- r ,.- . , .~ _ ~ ~ + i (~Q """'- % ~ _~, _' - -,. ^ , l~~ ~ 1. E v 7G 0 , :,jam `.~" - ---,- ~ i ~'~ 1i EC's L~::V 1i t: ' , -- _'-- s I I f i ~ _ ~__ . I -. ~ ~R t. y, " `~ s ~NpTE~,GHANG~ ~ '' f' ~ ; e ..~ 3 ~ it Name: MOORESVILLE Location: 035° 31' 09.64" N 080° 51' 48.36" W Date: 2/7/2008 Caption: I-77 Embankment Stabilization Scale: 1 inch equals 1333 feet Copyright (C) 1998, Maptech, Inc Interstate 77, I redel I County Sloughing road embankment ....' Y~. '. ~ . _ {. cfi~~:. k ~ ,~ ' ~ r ~: °~.. ;.-'+' S ~~ ~l fix. .~~.^~., ~:~~ \~. s ~` w- `~ ~a.~ ~?Y :<4~~' ~' ~ ` ^~~ ~~ y ,~ t' 0 _ it ----- a ~ ~ _ - _ _ _ _ ~ ~ - _ ~ ~ - - _ _ - llm n 11793+48 ll., N ----I/ll`---~~ - //m iv, ----------------------------- ---1~--- ~~-~ ----------- -- - t_____ ____ _____________ ,~ ~? - -- -__ o RIP RAP EN RGY -' - - - o DISSIPAT R --- - - - ----==y--~ o -" ----------____ _---- r ~~ ----- BEGIN ASPHALT CURB 793+36 BARGE TURBIDITY" CURTAIN TURBIDITY CURTAIN IREDELL CO UKTY I-77 NBL SH®ULDER REPAIR 250' +/- ~ R. .\ REPAIR AREA ~ L.-~1 NFL ~~ SNLD X-Stc, '~~. ~ r- ~ ~oG. erv, ~a f~ ~ rh~r~t-%s ~O~ P ~~~<~,1~ ne, ~~~ ~~ ~ l '~ ~-Q-~,~oi~l ~J ~ •. R T P:S .~ WL 984052 508745 ~~ ,V ~6~ s, o 0 WL 984051 (~071~2 ~~ ~~s i ® , --f- . o .., . i77xsect rdy_xsc.dgn 08/20/2007 02:30:56 PM Two nr.wavo ae~ wi rtcEa rtre t e TT oc !EO IAL WATER LEVEL pE I iABRlC AND P RAP BY MAINTENANCE P ~ ~ d ~ ~nl ~ b Q G~ ~( P d G^Q ~ ~ cBOT~ci~vicu sxctNrs~nvc UNIT MECh DD o0 Mn ~4 NJ~[~ f~~G~ C~~a~4G~NJC~TP~~1~ `, ^~~ a~ SLOP ^x wasreeN xacroivu orrice ~ .,~ ~ ,,, I-77 Lake Norman SLOPE STABILIZATION: General: (SPECIAL) This special provision governs the selection of anchors and construction of slope stabilization systems in accordance with the approved plans at locations determined by the Engineer. Work includes anchor selection, installing facing, installing anchors and connections, and loading and load locking anchors. Select a driven anchor system consisting of either the Platipus or Manta Ray soil anchoring systems. For further information concerning the Platipus soil anchoring system, contact: Platipus Anchors Limited 2008 Garner Station Boulevard Raleigh, NC 27603 Telephone: (866) 752-8478 http://www.platipus-anchors.com For further information concerning the Manta Ray soil anchoring system, contact: Williams Form Engineering Corp. 4170 Vansant Road Douglasville, GA 30135 Phone (770) 949-8300 Fax (770) 949-2377 www.williamsform.com Quality Assurance: Conduct a preconstruction meeting with the Contractor, the Contractor's superintendent, the Resident Engineer and/or his or her representative and the Geotechnical Operations Engineer to discuss construction and inspection of the slope stabilization system. This meeting should occur after the Contractor has mobilized to the site and all submittals have been approved. Anchor Selection Submittal: The Contractor is responsible for selecting the proper anchor size, tendon type and length, and anchorage to meet the design load and finished installation depth shown on the plans. The Contractor should review available subsurface information in selecting the anchor size, type, and drive depth. Contact the anchor Manufacturers for specific recommendations on selecting anchors. The anchor must have a factor of safety of 2.0 against structural failure of the anchor head, tendon, and anchorage for the design load as shown on the plans. All components must have a 50 year service life. Anchors may not extend beyond the Right of Way or Easement line. Submit three (3) copies of the Anchor Selection to the Engineer for review. The Engineer will respond with comments within 10 business days. Do not begin construction until all submittal requirements are satisfied and acceptable to the Engineer. No adjustments in contract time will be allowed due to incomplete submittals. Iredell County . I-77 Lake Norman Iredell County Include in the Anchor Selection Submittal: 1) Anchor size, tendon bar size, tendon bar material, anchor head type. 2) Description of the load testing and load locking method, including details of the jacking frame and associated cribbing, identification number and certified calibration records for each load cell or test jack pressure gauge. Calibration records shall include the date tested, device identification number and calibration test results. Load cells and pressure gauges shall be certified for an accuracy of at least two (2) percent of the applied certification loads by a qualified independent testing laboratory within twelve (12) months of the submittal date. 3) Manufacturer and/or vendor certifications stating all materials meet the requirements of this provision. • For anchors and anchor hardware, provide manufacturers' product certificates certifying that materials comply with specified performance characteristics and physical properties. • For chain link fabric, provide manufacturers' product certificates showing the physical properties of the fabric used and conformance of the fabric with this provision. • For bearing plates and connection hardware, provide manufacturers' product certificates certifying that materials comply with specified performance characteristics and physical properties. Materials: Provide materials conforming to the applicable sections of the Standard Specifications and the following: Platipus System Soil anchors, bearing plates and connections shall be in accordance with the manufacturers' specifications or as directed by the Engineer. Manta Ray System Soil anchors, bearing plates and connections shall be in accordance with the manufacturers' specifications or as directed by the Engineer. Chain Link Fabric Furnish and install chain link fabric as detailed in the plans and as directed by the Engineer. The chain link fabric shall be Type I Class D fabric with a maximum 2 x 2 in (50 x 50 mm) mesh opening and a minimum diameter of 0.12 in (3 mm), or an approved equal. Wire constituting the fabric shall have a minimum breaking strength of 8701bs (3.9 kN) when tested in accordance with AASHTO T68. The chain link fabric shall have a minimum height (width) of 5 ft (1.5 m). All chain link fabric shall meet the requirements of Section 1660 of the Standard Specifications and this Provision. 2 . I-77 Lake Norman Iredell County Bearing Plates and Connection Hardware Bearing plates shall be 6 in x 6 in x 0.125 in (175 mm x 175 mm x 3 mm) dished galvanized or stainless steel revetment plates. Use couplers, accessories and other devices as recommended by the anchor supplier. Steel bearing plates and connection hardware shall meet the requirements of ASTM A36 and be stainless steel or hot-dipped galvanized to meet ASTM A153. Handling_and Storage: Carefully store all steel components (anchors, bearing plates, connection hardware, etc.) on supports to prevent contact with the ground. Damage to steel as a result of abrasion, cuts or nicks and welds and weld spatter will be cause for rejection. Protect steel from dirt, rust and other deleterious substances at all times. Corrosion or pitting of steel will be cause for rejection. Verification Testing: Two (2) verification tests are required to verify the Contractors' methods and the anchor design capacity. The Engineer will determine the locations of these tests. Supply all material, equipment and labor to perform the verification tests. Ensure that verification test anchors extend to the minimum finished depth shown on the plans beyond the slope face. Collect all required test data in the presence of the Engineer. Provide a jack and a pressure gauge calibrated as a unit. Use a pressure gauge graduated in 100 psi (700 kPa) increments or less with a range not exceeding twice the anticipated maximum pressure during testing, unless otherwise approved by the Engineer. The ram travel of the jack shall be greater than 4 in (100 mm). The jack shall be capable of applying each load in less than one (1) minute. Center the jack over the anchor. Independently support the jack so the jack does not bear on the anchor. Position the jack such that unloading and repositioning of the jack during the test will not be required. Perform verification tests by slowly loading the anchor to 200 percent of the design load. A verification test anchor is acceptable when a pullout or structural failure does not occur at the maximum test load. Pullout failure load is defined as the load at which attempts to increase the test load result in continued excessive pullout movement of the test anchor. Record the pullout failure load as part of the test data. Verification tests that are not acceptable may require re-design and a revised Design Submittal or additional verification tests as determined by the Engineer. Complete all verification tests to the satisfaction of the Engineer before beginning construction of the slope stabilization system. Construction: Ensure the surface of the slope is free of obstructions that would prevent the chain link fabric from lying in direct contact with the surface of the slope. Install anchors at the locations and to the lengths and declinations as shown in the plans or as directed by the Engineer. Anchors may be added, eliminated or relocated as determined by the Engineer to accommodate actual site conditions. Install anchors as shown on the plans in accordance with the manufacturers' I-77 Lake Norman Iredell County recommended tolerances or as directed by the Engineer. Replace any anchor that exceeds such tolerances. Create a 1-foot diameter, 6-inch deep excavated depression in the slope face around each anchor tendon or bar immediately prior to installing the chain link panel to be secured by the anchors. Beginning at the left or right limits of the stabilization at the crest of slope, install the chain link fabric in predominantly vertical panels. Work shall proceed across the slope one chain link fabric panel at a time. Connect the bearing plate to the leftmost/rightmost top row anchor. Place a square of Type I engineering fabric in accordance with Section 1056 of the Standard Specifications, of similar size as the bearing plate, between the bearing plate and the chain link fabric. With the equipment and methods utilized for the verification tests, load the anchors so that the head assemblies are compressed into the slope surface a minimum of 1 in (25 mm) and such that the required anchor test load as shown on the plans is achieved. After load testing, back the anchor load off to the design anchor load as shown on the plans and lock off the anchor head assembly. An anchor is acceptable when a structural or pullout failure, as defined in the Verification Testing section, does not occur at the required test load. For bar anchors, cut the bar 2 in (50 mm) above the locking nut at the plate. For tendon anchors, cut the cable 12 in (300 mm) above the wedge lock. Work across the panel away from the first anchor, slightly tensioning the chain link fabric prior to connecting the bearing plate to and loading the next anchor. Continue connecting bearing plates and loading the anchors in rows while tensioning the chain link fabric, working from top to bottom until the all anchors are completed in each chain link fabric panel. If an anchor occurs near the edge of a chain link fabric panel, do not install the bearing plate until the adjacent overlapping panel is installed. Install subsequent chain link fabric panels in a similar manner left/right of previous panels to the limits shown on the plans. The panels should be overlapped by two mesh diamonds and connected to the adjacent panel by "Tiger Tite" locking clips on 2 ft (600 mm) centers. All "Tiger Tite" locking clips must be composed of galvanized steel, approximately 0.120 in (3 mm) diameter (gage 11). Alternative fasteners may be approved by the Engineer provided they provide at least 9001bs (4 kN) of resistance while still remaining locked and closed. Galvanize all "Tiger Tite" locking clips to the requirements of ASTM A153. Measurement and Payment: The quantity of slope stabilization to be paid for will be the actual surface area of square yards (square meters) of the slope stabilization system. Overlaps in the chain link fabric are not included in the measured area. Additional anchors needed due to failing anchor tests will be considered incidental to the cost of the Slope Stabilization. Slope stabilization will be paid for at the unit bid price for "Slope Stabilization" per square yard (square meter) of Slope Stabilization. The unit bid price will constitute full compensation for all the materials, labor, tools, equipment, testing and incidentals required to construct the slope stabilization system. Slope Stabilization .............................................................square yard (square meter) 4