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HomeMy WebLinkAboutSW8931005_Historical File_19950120 ESTATE q fAi -/el".%j -14, State of North Carolina Department of Environment, Health, and Natural Resources Wilmington Regional Office James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson Jonathan B. Howes, Secretary WATER QUALITY SECTION Regional Manager January 20, 1995 Mr. Doug Barrett, Airport Manager Albert J. Ellis Airport 264 Albert Ellis Airport Road Richlands, North Carolina 28574 Subject: CERTIFICATION OF COMPLIANCE with Stormwater Regulations Stormwater Project No. 931005 Revision Albert Ellis Airport Onslow County Dear Mr. Barrett: The Wilmington Regional Office received a revised Stormwater Submittal for the Albert Ellis Airport on January 11, 1995, with fmal information on January 17, 1995. Staff review of the plans and specifications, including the statement of intent to deed restrict the allowable built-upon area to 12.1 acres for the tract as shown on the approved plan, has determined that the project as proposed will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1003(a)(3). Any modification of the plans submitted to and approved by this Office or further development of this site regardless of the fact that the modification may be less than 1 acre, will require an additional Stormwater Submittal/Modification and approval prior to initiation of construction. Modifications include but are not limited to; project name changes, transfer of ownership, redesign of built-upon surfaces, addition of built-upon surfaces, redesign or further subdivision of the project area as shown on the approved plans. This Certification shall be effective from the date of issuance until rescinded. The project shall be constructed and maintained in accordance with the plans and specifications approved by the Wilmington Regional Office. This Certification supersedes the one issued to you on October 6, 1993. The developer is responsible for obtaining any and all permits and approvals necessary for the development of this project. This could include the Division of Coastal Management under CAMA requirements, the Division of Environmental Management under Wetland 401 Water Quality Certification and/or a Dredge and Fill Permit and/or a Sewer Extension/Collection Permit, U.S. Army Corps of Engineers 404 Wetland Permit, NPDES stormwater permit if disturbing five acres or more, local County or Town Agency permits under their local ordinances, or others that may be required. 127 Cardinal Drive Extension, Wilmington, N.C.28405-3845 •Telephone 910-395-3900 • Fax 910-350-2004 An Equal Opportunity Affirmative Action Employer Mr. Barrett January 20, 1995 Stormwater Project No. 931005 Revision An Engineer/Designer/Owner Certification (copy attached) must be received at the time the recorded Deed Restrictions are submitted. The Certification will verify to this Office that the stormwater controls, general layout of the project and the amount of impervious area are in substantial compliance with the approved Stormwater Plan. If you have any questions concerning this matter, please contact Linda Lewis or me at (910) 395- 3900. Sincerely, - Dave Adkins Water Quality Supervisor DA/arl: S:\WQS\STORMWAT\CERTIFIC\931005.JAN cc: Scott Yarley, P.E. Marshall Batchlor, Onslow County Inspections Bradley Bennett Linda Lewis Wilmington Regional Office Central Files Albert Ellis Airport Onslow County Stormwater Project No. 931005 Revision Engineer/Designer/Owner Certification I, , having been authorized to observe (periodically/weekly/full time) the construction of the project, (Project) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction of the stormwater control system for this project such that the construction was observed to be built within substantial compliance and intent of the plans and specifications approved by the NCDEM Water Quality Section. The layout of the impervious surfaces and the road details, as constructed, conform with the layout and road details shown on the approved plans. (Note: if a copy of the recorded deed restrictions has not been forwarded, you must provide a copy along with this form.) Signature Date DIV10LON OF ENVIRONMENTAL MANALMENT JAN171995 ,, DENSITY ENGINEERED PROJECT DATA Project Name Albert J. Ellis Airport Location(County,Township/Municipality,Address,State Road) NCSR 1265 - Onslow County Owner's Name Mr. Doug Barrett, Airport Manager MailingAddress Al bert J. Ellis Airport 264 Albert Ellis Airport Road, Richlands, North Carolina 28574 Phone Number (919)324-1 100 Submittal Date Brief Description (include map and appropriate drawings) Construction of Perimeter Road, Apron repair, and Taxiway widening. . Name of Water Body Receiving Stormwater Runoff Back swamp and southwest creek Classification of Water Body Csw/CNSW If SA waters, engineered system, and distance is <0.5 miles, attach report of chloride sampling results mg/1 State/Federal Permits/Approvals Required (Check appropriate blanks) CAMA Major Sedimentation/Erosion Control X 404 Permit DEM/DHS Sewage Disposal Other (Specify) CALCULATION OF BUILT UPON AREA • Built upon area means that portion of a development that is covered by impervious or partially pervious cover including buildings, pavement, recreation facilities, gravel, etc., but not including wood decking. If the project includes areas draining to different water classifications, please note them separately below. Subwatershed Subwatershed Classification Csw/CNSW Built upon area 12.1 A . . Total Project Area 672.75 AC. % Built upon Area 1 .8% Allowable BM Area 30% Is the Project B/U Area 5 the Allowable B/U Area? Yes (If no, an engineered system is required.) % Built upon area = (built upon area / total project area) * 100 Built upon area limits for projects to meet density: SA waters -- 25%, Other ---30% I Office use oniy4 i STORMWATER COLLECTION SYSTEM p I I IE Ii V IE D Describe how the runoff will be treated Grass swal es with minimal AAN 1 7 995 pipe under Perimeter Road DEM ROJ # -211FFER AREA Is the eu=built upon area at least 30 feet from mean high water of all surface waters? Y`_ if no,please provide description (Note: Only boat ramps, public roads,public bridges, and walkways to water related facilities are allowed within 30 feet of the mean high water line if the project is intended to meet stormwater control requirements through density limits.) DEED RESTRICTIONS AND PROTECTIVE COVENANTS By my side below,I certify that the recorded deed restrictions and protective covenants for this project shall limit the allowable built-upon area per lot to N/A square Beet inclusive of right-of-way, structures, pavement, walkways or patios of brick, stone, or slate, not including wood decking, state that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, and that benefits may be enforced by the State of North Carolina, therefore, the covenant cannot be changed or deleted without consent of the State. CERTIFICATION I, DO v` PLSQ. Ajj E , certify that the information included on this submittal form is correct, that the project will be constructed in conformance with this information, and that to the best of my knowledge, the proposed project complies with the requirements of 15 NCAC 2H.1003 (b). I authorize the below named person or firm to submit stormwater plans on my behalf, and agree to abide by the deed restriction statement above. o :m ; . Date Provide authorized person or firm name and address below: Scott A. Yarley, P.E. The LPA GROUP of North Carolina, p.a. 900 Ridgefield Drive Raleigh, NC 2 19 nN • ,allotary Public fior fate�f Coup of , do iy certify that i „ _ personally appeared before me this 9 3 day of . S'' and acknowledges the due execution Wi of the foregoing t. mli Witness my h •. and offi ' • /Pi NOTAR Y My commission expires .S=3- y'9 , o PUBLIC ?mil DIVISION OF MNIVIRON MI TAL.CO. Nj� 1► E,ViENT SIGN-OFF Regional Office 20 -3-'Ar.) 95 Geoic aet(Ai4. 2 Date Individual Evaluating F, • f'1 r Date Regional ater Quality Supervisor u cc: Applicamt/1 t0/Bradley Bennett/Central Files r THE LPA GROUP of North Carolina, p.a. Transportation Consultants �� 900 Ridgefield Drive Post Office Box 17736 = Raleigh, North Carolina 27619 (919) 954-1244 FAX (919) 954-1345 January 10, 1995 Ms. Linda Lewis Department of Environment, Health and Natural Resources Division of Environmental Management 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Re: Albert J. Ellis Airport Taxiway "A" Widening FAA AIP #3-37-0033-13 Dear Ms. Lewis: Per your request, we have enclosed three (3) sets of Grading Plan Sheets for the above referenced project. Under separate cover the Airport Manager, Mr. Doug Barrett will forward the revised submittal form containing the updated density calculations (copy enclosed) . Should you have any questions or require any additional information, do not hesitate to contact either myself or Scott Yarley. Sincerely, THE LPA GROUP of North Carolina, p.a. >17 9!111 EPTIF rt JAMES C. FART ING ti g Construction Manager RUE E 2 n �a JCF/mls D 15 U u u D Enclosures JAN 1 1 1995 cc: Mr. Doug Barrett rD E M 9ROJ # 9S/005 Member of THE LPA GROUP INCORPORATED CHARLESTON,SC • COLUMBIA SC • GULFPORT/BILOXI,MS • KNOXVILLE,TN a MOBILE,AL • MYRTLE BEACH,SC PHILADELPHIA,PA • RALEIGH,NC a TAMPA FL DIV1.010N OF ENVIRONMENTAL MANAG..MENT DENSITY ENGINEERED • PROJECT DATA Project Name Al bert J. Ellis Airport Location(County,Township/Municipality,Address,State Road) NCSR 1265 - Onsl ow County Owner's Name Mr. Doug Barrett, Airport Manager Mailing Address Albert J. Ellis Airport 264 Albert Ellis Airport Road, Richlands, North Carolina 28574 Phone Number (919)324-1100 Submittal Date Brief Description (include map and appropriate drawings) Constructi on of Peri meter Road, Apron repair, and Taxiway widening. . Name of Water Body Receiving Stormwater Runoff Back swamp and southwest creek Classification of Water Body Csw/CNSW If SA waters, engineered system, and distance is <0.5 miles, attach report of chloride sampling results mg/1 State/Federal Permits/Approvals Required (Check appropriate blanks) CAMA Major Sedimentation/Erosion Control X 404 Permit DEM/DHS Sewage Disposal Other (Specify) CALCULATION OF BUILT UPON AREA Built upon area means that portion of a development that is covered by impervious or partially pervious cover including buildings, pavement, recreation facilities, gravel, etc., but not including wood decking. If the project includes areas draining to different water classifications, please note them separately below. Subwatershed Subwatershed Classification Csw/CNSW Built upon area 12.1 AC. Total Project Area 672.75 AC. % Built upon Area 1 .8% Allowable B/U Area 30% Is the Project B/U Area 5 the Allowable B/U Area? Yes (If no, an engineered system is required.) % Built upon area = (built upon area / total project area) * 100 Built upon area limits for projects to meet density: SA waters --- 25%, Other ---30% Office use only STORMWATER COLLECTION SYSTEM 11[; E C E II V IE [DJ Describe how the runoff will be treated Grass swal es with minimal pipe under Perimeter Road JAN 1 1 1995 DEM ' oj # 93WO BUFFER AREA Is the built upon area at least 30 feet from mean high water of all surface waters? Yes if no,please provide a description (Note: Only boat ramps,public roads,public bridges,and walkways to water related facilities are allowed within 30 feet of the mean high water Iine if the project is intended to meet stormwater control requirements through density limits.) DEED RESTRICTIONS AND PROTECTIVE COVENANTS By my signature below,I certify that the recorded deed restrictions and protective covenants for this project shall limit the allowable built-upon area per lot to N/A square feet inclusive of right-of-way, structures,pavement, walkways or patios of brick, stone, or slate, not including wood decking, state that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, and that benefits may be enforced by the State of North Carolina, therefore, the covenant cannot be changed or deleted without consent of the State. CERTIb'ICATION I, , certify that the information included on this submittal form is correct, that the project will be constructed in conformance with this information, and that to the best of my knowledge, the proposed project complies with the requirements of 15 NCAC 2H.1003 (b). I authorize the below named person or firm to submit stormwater plans on my behalf, and agree to abide by the deed restriction statement above. Owner's Signet ire Daze Provide authorized person or firm name and address below: Scott A. Yarley, P.E. The LPA GROUP of North Carolina, p.a. 900 Ridgefield Drive Raleigh, NC 27619 I, ,allotary Public for the State of _ County of , do hereby certify that personally y appeared before me this day of , 19_, and acknowledges the due execution of the foregoing instrument. Witness my hand and official seal, My commission expires DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN-OFF Regional Office Date Individual Evaluating Forms/Plans Date Regional Water Quality Supervisor cc: ApplicaatfWrltOBradley B /Central Files THE LPA GROUP Transportation Consultants 900 Ridgefield Drive a_MA Post Office Box 17736 = _ Raleigh, North Carolina 27619 (919) 954-1244 FAX (919) 954-1345 September 15, 1994 Mr. Doug Barrett Airport Manager Albert J. Ellis Airport 264 Albert Ellis Airport Road Richlands, North Carolina 28574 Re: Albert J. Ellis Airport Taxiway Rehabilitation and Widening Dear Mr. Barrett: Enclosed you will find a partially completed Stormwater Submittal Form that will be submitted to the North Carolina Department of Environment, Health and Natural Resources for the review of Stormwater Controls for the above referenced project. This form will need to be signed, notarized and returned to The Division of Environmental Management. Department of Environment, Health and Natural Resources Division of Environmental Management 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Attention: Ms. Linda Lewis This form is a part of the approval process and needs to be returned to the above address as soon as possible in order to avoid delays in the issuing of permits and ultimately the construction of the subject project. Please do not hesitate to call if you have any questions. Sincerely, STORM WTF THE LPA GROUP of North Carolina, p.a. � - a. VCEOVED SCOTT A. YAkiEY, .E. JAIL 1 1995 Project Engineer D E SAY/wp PROJ # `f 3 /oo 5 Enclosure . ___= _ • " __: ' . . _ - _ . . __ __ . THE LPA GROUP Transportation Consultants 900 Ridgefield Drive Post Office Box 17736 Raleigh, North Carolina 27619 (919) 954-1244 FAX (919) 954-1345 September 15, 1994 Ms. Linda Lewis Department of Environment, Health and Natural Resources Division of Environmental Management 127 Cardinal Drive Extension Wilmington, North Carolina 28405-3845 Re: Albert J. Ellis Airport Taxiway Rehabilitation and Widening Dear Ms. Lewis: Enclosed are two additional sets of plans for the above referenced project for your use. I have revised the Stormwater Submittal Forms as per your comments and have sent them to the client for his signature. You should receive this revised form within the week. If you have any questions or need any additional information, please contact me at this office. Sincerely, THE LPA GROUP of North Carolina, p.a. AtitTrn Sea. STORAe SCOTT A. EY, .E. D 2 n i� Project En neer IE+ u 15 n SAY/wp SEP 1 6 1994 Enclosure Dse Member of THE LPA GROUP INCORPORATED COLUMBIA, SC • GULFPORT/BILOXI, MS • KNOXVILLE, TN • MEMPHIS, TN • MOBILE, AL • MYRTLE BEACH, SC PHILADELPHIA, PA • RALEIGH, NC • TAMPA, FL e 10,17. it411t4 State of North Carolina Department of Environment, Health, and Natural Resources Wilmington Regional Office James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson Jonathan B. Howes, Secretary Regional Manager September 9, 1994 Mr. Doug Barrett, Airport Manager Albert J. Ellis Airport 264 Albert Ellis Airport Road Richlands, North Carolina 28574 Subject: ADDITIONAL INFORMATION Stormwater Project No. 931005 Revision Taxi and runway improvements Onslow County Dear Mr. Barrett: The Wilmington Regional Office received a Stormwater Submittal for the Taxi and runway improvements on August 31, 1994. A preliminary review of that information has determined that the submittal for the subject project is not complete. The following information is needed to continue the stormwater review: 1. The additional impervious surface created by the taxiway and runway improvements must be added to the previously approved 8 acres for this project. Attached is a copy of the previous submittal form. Please complete a new form with the built-upon area calculations updated to reflect the additional impervious area. 2. Please provide three sets of plans. One was received, so two more are required for a complete submittal. 3. Please provide updated density calculations. 127 Cardinal Drive Extension,Wilmington,N.C.28405-3845•Telephone 910-395-3900•Fax 910-350-2004 An Equal Opportunity Affirmative Action Employer Mr. Barrett September 7, 1994 Stormwater Project No. 931005 Revision Please note that this request for additional information is in response to a preliminary review. The requested information should be received by this Office prior to October 7, 1994, or the submittal will be returned as incomplete. If you have any questions concerning this matter please feel free to call me at (910) 395-3900. Sincerely, 4-7-Cfra Lgt(A)42 Ms. Linda Lewis Environmental Engineer DA/arl: S:\WQS\STORMWAT\ADDINF01931005.SEP cc: (2) Linda Lewis Central Files 2 111 III ITEM E-893 TEMPORARY SILT FENCE III DESCRIPTION II 893-1. 1 This item shall consist of furnishing, installing, maintaining, and removing a geotextile barrier-fence designed to remove suspended particles from water passing through it. 1 893-1.2 The quantities of temporary silt fence shown on the drawings may be increased or decreased at the direction of the III Engineer based on weather, construction procedures, and actual site conditions that occur during construction. Such variations in quantity will not be considered as alterations in the details of construction or a change in the character of the work. II893-1.3 Except as otherwise directed by the Engineer, installation of temporary silt fences shall be completed prior to any excavation 111 or grading operations. 893-1.4 At option of Contractor and approval by Engineer, either a wire supported geotextile silt fence or a self supporting IIgeotextile silt fence may be provided. MATERIALS I893-2 . 1 GEOTEXTILE. Fabric shall consist of rot-proof synthetic fibers formed into a woven or non-woven fabric meeting the II requirements shown in Table 1. The geotextile shall be free of any treatment or coating which might adversely alter its physical properties after installation. Geotextile rolls shall be furnished with suitable wrapping for protection against moisture and extended III ultraviolet exposure prior to placement. Each roll shall be labeled or tagged to provide product identification sufficient for inventory and quality control purposes. Rolls shall be stored in 01 a manner which protects them from the elements. TABLE 1 IPHYSICAL REQUIREMENTS FOR GEOTEXTILE PROPERTY TEST METHOD REQUIREMENT 111 Tensile Strength ASTM D 4632 90 lbs. minimum Elongation ASTM D 4632 50% maximum IIApparent Opening ASTM D 4751 No. 20 maximum Size (U.S. No. 50 minimuWialiEll IStandard Sieve) J 1 i Ultraviolet ASTM D 4355 Minimum i MOVED Degradation at 70% Strengt II500 Hours Retained AUG 3 ' 1994 E-893-1 D E M IIr&oy #_U Iva I 893-2 .2 POSTS. Either wood, steel, or synthetic posts may be 11 used. Posts shall have a minimum length of 36 inches plus burial depth and be of sufficient strength to resist damage during installation and to support applied loads after installation. Wood posts shall be at least 2 inch nominal square or 2 inch diameter. Steel posts shall weigh not less than 1.3 pounds per linear foot. In soft ground, wet soils, swamps, and other similar conditions, I provide a wider post or other means as needed to develop adequate resistance to applied loads. 893-2 . 3 SUPPORT FENCE. Wire or other support fence shall be at 11 least 32 inches high and strong enough to support applied loads. Wire support fence shall be at least 12-1/2 gauge, 6x6 steel. 893-2 .4 PREFABRICATED FENCE. Prefabricated fence systems may be used provided they meet all of the above material requirements, perform satisfactorily in the field, and are approved by the Engineer. CONSTRUCTION METHODS 11 893-3 . 1 FENCE INSTALLATION. The Contractor shall install temporary silt fences as shown on the drawings and at other locations as directed by the Engineer. Fence construction shall beI/ adequate to handle the stress from sediment loading. Geotextile shall be adequately fastened to the support fence. Geotextile at the bottom of the fence shall be buried a minimum of 6 inches in a trench so that no flow can pass under the barrier. The trench shall be backfilled and the soil compacted over the geotextile. Fence height shall be not less than 32 inches or more than 36 inches above ground surface. The geotextile shall be spliced 11 together only at a support post, with a minimum 6-inch overlay. 893-3 .2 POSTS. Posts shall be' spaced a maximum of 8 feet apart I and where possible placed or driven a minimum of 24 inches into the ground. Where a 24 inch depth is impractical to achieve, the posts shall be adequately secured to prevent overturning of the fence due to sediment loading. 893-3 . 3 WIRE SUPPORT. When wire support fence is used, the wire. mesh shall be fastened securely to the up slope side of the post. The wire shall extend into the trench a minimum of two inches and extend a maximum of 36 inches above the original ground surface. 893 . 3 .4 SELF SUPPORT_ When self supported fence is used, the geotextile shall be securely fastened to fence posts. 893-3 .5 RESPONSIBILITY. It is the Contractor's responsibility to maintain the integrity of silt fences as long as they are necessary to contain sediment runoff. The Contractor shall inspect all temporary silt fences immediately after each rainfall and at least daily during prolonged rainfall. Any deficiencies shall be immediately corrected by the Contractor. In addition, the Contractor shall make a daily review of the location of silt fences11 E-893-2 I in areas where construction activities have changed the natural contour and drainage runoff to ensure that the silt fences are properly located for effectiveness. Where deficiencies exist, additional silt fences shall be installed as directed by the Engineer. Should the silt fence become damaged, clogged, or otherwise ineffective while the barrier is still necessary, it shall be repaired or replaced promptly by the Contractor at his expense. 893-3 . 6 SEDIMENT. Sediment deposits shall be removed when the deposit reaches approximately one-half of the height of the silt fence. 893-3 .7 REMOVAL. The silt fence shall remain in place until the Engineer directs that it be removed. Upon removal, the Contractor shall remove and dispose of any excess sediment accumulations, dress the area to give a pleasing appearance, and vegetate all bare areas in accordance with the contract requirements. The fence materials will remain the property of the Contractor and may be used at other locations provided the materials meet the requirements in Table 1. METHOD OF MEASUREMENT 893-4 . 1 The quantity of temporary silt fence to be paid for will be the actual ;umber of linear feet of silt fence, measured in place from end post to end post of each separate installation, which has been completed and accepted. BASIS OF PAYMENT 893-5. 1 No separate payment will be made for removal and disposal of sediment accumulations. The cost of this work shall be considered incidental to the cost of temporary silt fence. 893-5. 2 Payment for accepted temporary silt fence shall be made at the contract unit price per linear foot. The above price shall be full compensation for all work covered by this item, including but not limited to furnishing all fence posts, fence fabric, filter fabric, hardware, and other material; installing and maintaining the silt fence; removal and disposal of sediment accumulations from the silt fence; removal of the silt fence; and dressing the disturbed areas after the silt fence has been removed. Payment will be made under: Item E-893 Temporary Silt Fence -- per linear foot E-893-3 TESTING AND MATERIAL REQUIREMENTS ASTM D 4355 Deterioration of Geotextiles from Exposure to Ultraviolet Light and Water ASTM D 4632 Breaking Load and Elongation of Geotextiles (Grab Method) ASTM D 4751 Determining Apparent Opening Size of a Geatextile END OF ITEM E-893 E-893-4 (1 11 ITEM E-895 EROSION CONTROL MATTING ii : Description 895-1.1 The work covered by this section consists of furnishing, placing, and securing either jute matting, excelsior matting; paper II matting, or other approved matting on previously shaped and seeded drainage channels, slopes, or other areas at locations shown on the plans or as directed by the Engineer. 11 The quantity of matting to be placed will be affected by the actual conditions which occur during the construction of the project. The quantity of matting may be increased, decreased, or eliminated i entirely at the direction of the Engineer. Such variations in quantity will not be considered as alterations in the details of construction or a change in the character of the work. 11 Materials 895-2. 1 I (A) GENERAL: Matting for erosion control shall be jute matting, excelsior ill matting, or paper matting. Other acceptable material manufactured especially for erosion control may be used when approved by the Engineer in writing before being used. Ditch ill liner for erosion control shall not be dyed, bleached, or otherwise treated in a manner that will result in toxicity to vegetation. ill (B) JUTE MATTING: Jute matting shall be of a uniform open plain weave of single III jute yarn, 48 inches in width plus or minus 1 inch. The yard shall be of a loosely twisted construction and shall not vary in thickness by more than one-half its normal diameter. There shall MI be 78 warp ends, plus or minus 2, per linear yard; and the weight shall average 1. 122 pounds per linear yard of the matting with a tolerance of plus or minus 5 percent. Ell (C) EXCELSIOR MATTING: Excelsior matting shall consist of a machine produced mat of 1111 curled wood excelsior at least 47 inches in width. The mat shall weigh 0.975 pounds per square yard with a tolerance of plus or minus 10 percent. At least 80 percent of the individual MI excelsior fibers shall be evenly distributed over the entire area of the blanket. One side of the excelsior matting shall be covered with a woven fabric of twisted paper cord or cotton cord, or with an extruded plastic mesh. The mesh size for either the ;II: fabric or plastic mesh shall be a minimum of 1 inch x 1 inch and a maximum of 1 1/2 inches x 3 inches. E-895-1 )111 U (D) PAPER MATTING: 11 Paper matting shall consist of a knitted polypropylene yarn with uniform openings through which biodegradable paper strips have I been continuously interwoven. The openings shall be no greater than 3/4 inch in their greatest dimension and 1/2 inch in their least dimension. The interwoven yard and paper shall form a flexible mat which will stretch in any direction so as to conform to the shape of an irregular surface when applied to such surface. Paper matting shall be 3 . 6 feet or more in width and weigh a minimum of 0. 09 pound per square yard. (E) WIRE STAPLES: 11 Staples shall be machine made of No. 11 gage new steel wire formed into a "U" shape. The size when formed shall be not less than 6 inches in length with a throat of not less than 1 inch in width. Construction Methods I 895-3. 1 PLACING MATTING. Placing of matting shall be done immediately following seeding. The earth surface shall be smooth and free from stones, clods,' or debris which will prevent the contact of the matting with the soil. Care shall be taken to preserve the required line, grade, and cross section of the area covered. Matting shall be unrolled in the direction of the flow of water, and shall be applied without stretching so that it will lie smoothly but loosely on the soil surface. The up-channel or top of slope end of each piece of matting shall be buried in a narrow trench at least 5 inches deep and tamped firmly. After the end of the matting is buried; the trench shall be closed and tamped firmly. Where one roll of liner ends and a second roll begins, the end of the upper roll shall be brought over the buried end of the second roll so that there will be a 6 inch overlap. Check slots shall be constructed at each 50 feet longitudinally in the matting or as directed by the Engineer. These slots shall be narrow trenches at least 5 inches deep. The ditch liner shall be folded over and buried to the full depth of the trench, after which the trench shall be closed and firmly tamped. Where 2 or more widths of matting are laid side by side, the overlap shall be at least 4 inches. Staples shall be placed across matting at ends, junctions, and check slots and shall be spaced approximately 10 inches apart. Staples shall be placed along the outer edges and down the center of each strip of liner and shall be spaced 3 feet apart. Staples shall also be placed along all lapped edges 2 to 3 feet apart. E-895-2 r 1 When excelsior matting is used, the matting shall be installed with the fabric on the top side. After jute matting has been placed and stapling completed, the matting shall be rolled with an approved roller to assure that it is in proper contact with the soil. In the installation of matting on cut or fill slopes the Engineer may require adjustments in the trenching or stapling requirements to fit individual slope conditions. Method of Measurement 895-4 . 1 The quantity of matting for erosion control to be paid for will be the number of square yards, measured along the surface of the ground, over which matting has been acceptably placed and maintained. Basis of Payment 895-5.1 The quantity of matting for erosion control, measured as provided above will be paid for at the contract unit price per square yard for "Matting for Erosion Control" . The above price and payment will be full compensation for all work 1 covered by this section, including but not limited to furnishing all matting, staples, and other materials; and placing and securing the matting. Payment will be made under: Item E-895 Erosion Control Matting Per Square Yard 1 1 E-895-3 1 I II ,ITEM T-901 SEEDING 11 Description 901-1. 1 This item shall consist of soil preparation, seeding at the II areas shown on the plans or as directed by the Engineer in accordance with these specifications. This item shall also include periodic mowing, as directed by the Engineer, in order to maintain the site. I Materials • 901-2 . 1 SEED The species and application rates of grass, legume, and cover-crop seed furnished shall be those stipulated herein. Seed shall conform to the requirements of Fed. Spec. JJJ-S-181. IType Rate/Acre Kentucky Fescue 80 lbs. Wilmington Bahiagrass 50 lbs. IKobe or Korean Lespedeza 25 lbs. (between May & August 31) Seed shall be furnished separately or in mixtures in standard containers ill with the seed name, lot number, net weight, percentages of purity and of germination and hard seed, and percentage of maximum weed seed content clearly marked for each kind of seed. The Contractor shall furnish the ill Engineer duplicate signed copies of a statement by the vendor certifying that each lot of seed has been tested by a recognized laboratory for seed testing within 6 months of date of delivery. This statement shall include: name and address of laboratory, date of test, lot number for ill each kind of seed, and the results of tests as to name, percentages of purity and of germination, and percentage of weed content for each kind of seed furnished, and, in case of a mixture, the proportions of each III kind of seed. III 901-2.2 LIME. Lime shall be ground limestone containing not less than 85% of total carbonates, and shall be ground to such fineness that 90% will pass through a No. 20 mesh sieve and 50% will pass through a No. 100 mesh sieve. Coarser material will be acceptable, providing the rates ri of application are increased to provide not less than the minimum quantities and depth specified in the special provisions on the basis 'of the two sieve requirements above. Dolomitic lime or a high magnesium III lime shall contain at least 10% of magnesium oxide. Lime shall be applied at the rate of 4,000 lbs. per acre. All liming materials shall conform to the requirements of ASTM C 602 . ill 901-2 . 3 FERTILIZER. Fertilizer shall be standard commercial fertilizers supplied separately or in mixtures containing the percentages of total nitrogen, available phosphoric acid, and gi water-soluble potash. They shall be applied at the rate and to the depth specified herein, and shall meet the requirements of Fed. Spec. MI T-901-1 ism U O-F-241 and applicable state laws. They shall be furnished in standard I containers with name, weight, and guaranteed analysis of contents clearly marked thereon. •No cyanamide compounds or hydrated lime shall be permitted in mixed fertilizers. The fertilizers may be supplied in one of the following forms: a. A dry, free-flowing fertilizer suitable for application by a I common fertilizer spreader; b. A finely-ground fertilizer soluble in water, suitable for application by power sprayers; or c. A granular or pellet form suitable for application by blower equipment. Fertilizers shall be commercial fertilizer and shall be spread at the rate of 1,000 lbs. per acre. 901-2 .4 SOIL FOR REPAIRS. The soil for fill and topsoiling of areas to be repaired shall be at least of equal quality to that which exists in areas adjacent to the area to be repaired. The soil shall be relatively free from large stones, roots, stumps, or other materials that will interfere with subsequent sowing of seed, compacting, and establishing turf, and shall be approved by the Engineer before being placed. Construction Methods 901-3. 1 ADVANCE PREPARATION AND CLEANUP. After grading of areas has been completed and before applying fertilizer and ground limestone, areas to be seeded shall be raked or otherwise cleared of stones larger than 2 inches (50 mm) in any diameter, sticks, stumps, and other debris which might interfere with sowing of seed, growth of grasses, or subsequent maintenance of grass-covered areas. If any damage by erosion or other causes has occurred after the completion of grading and before beginning the application of fertilizer and ground limestone, the Contractor shall repair such damage. This may include filling gullies, smoothing irregularities, and repairing other incidental damage. An area to be seeded shall be considered a satisfactory seedbed without additional treatment if it has recently been thoroughly loosened and worked to a depth of not less than 5 inches (125 mm) as a result of grading operations and, if immediately prior to seeding, the top 3 inches (75 mm) of soil is loose, friable, reasonably free from large clods, rocks, large roots, or other undesirable matter, and if shaped to the required grade. However, when the area to be seeded is sparsely sodded, weedy, barren I and unworked, or packed and hard, any grass and weeds shall first be cut or otherwise satisfactorily disposed of, and the soil then scarified or otherwise loosened to a depth not less than 5 inches (125 nun) . Clods shall be broken and the top 3 inches (75 mm) of soil shall be worked T-901-2 I into a satisfactory seedbed by discing, or by use of cultipackers, rollers, drags, harrows, or other appropriate means. 901-3.2 DRY APPLICATION METHOD. a. Liming. Lime shall be applied separately and prior to the application of any fertilizer or seed and only on seedbeds which have previously been prepared as described above. The lime shall then be worked into the top 3 inches (75 mm) of soil after which the seedbed shall again be properly graded and dressed to a smooth finish. b. Fertilizing. Following advance preparations and cleanup fertilizer shall be uniformly spread at the rate which will provide not 1 less than the minimum quantity stated in paragraph 901-2. 3. ..I c. Seeding. Grass seed shall be sown at the rate specified in paragraph 901-2. 1 immediately after fertilizing, and the fertilizer and seed shall be raked within the depth range stated in the special provisions. Seeds of legumes, either alone or in mixtures, shall be inoculated before mixing or sowing, in accordance with the instructions of the manufacturer of the inoculant. When seeding is required at other than the seasons shown on the plans or in the special provisions, a cover crop shall be sown by the same methods required for grass and legume seeding. d. Rolling. After the seed has been properly covered, the seedbed shall be immediately compacted by means of an approved lawnroller, weighing 40 to 65 pounds per foot (60 to 97 kg per meter) of width for clay soil (or any soil having a tendency to pack) , and weighing 150 to 200 pounds per foot (223 to 298 kg per meter) of width for sandy or light soils. 901-3.3, WET APPLICATION METHOD. a. General. The Contractor may elect to apply seed and fertilizer (and lime, if required) by spraying them on the previously prepared seedbed in the form of an aqueous mixture and by using the methods and equipment described herein. The rates of application shall be as specified in the special provisions. b. Spraying Equipment. The spraying equipment shall have a container or water tank equipped with a liquid level gauge calibrated to read in increments not larger than 50 gallons (190 liters) over the entire range of the tank capacity, mounted so as to be visible to the nozzle operator. The container or tank shall also be equipped with a mechanical power-driven agitator capable of keeping all the solids in the mixture in complete suspension at all times until used. The unit shall also be equipped with a pressure pump capable of delivering 100 gallons (380 liters) per minute at a pressure of 100 pounds per square inch (690 kPa) . The pump shall be mounted in a line which will recirculate the mixture through the tank whenever it is not 11 T-901-3 I i being sprayed from the nozzle. All pump passages and pipe lines shall be capable of providing clearance for 5/8 inch (15 mm) solids. The power unit for the pump and agitator shall have controls mounted so as to be accessible to the nozzle operator. There shall be an indicating pressure gauge connected and mounted immediately at the back of the nozzle. The nozzle pipe shall be mounted on an elevated supporting stand in such a manner that it can be rotated through 360 degrees horizontally and inclined vertically from at least 20 degrees below to at least 60 degrees above the horizontal. There shall be a quick-acting, three-way control valve connecting the recirculating line to the nozzle pipe and mounted so that the nozzle operator can control and regulate the amount of flow of mixture delivered to the nozzle. At least three different types of nozzles shall be supplied so that mixtures may be properly sprayed over distance varying from 20 to 100 feet (6 to 30 m) . One shall be a close-range ribbon nozzle, one a medium-range ribbon nozzle, and one a long-range jet nozzle. For case of removal and cleaning, all nozzles shall be connected to the nozzle pipe by means of quick-release couplings. In order to reach areas inaccessible to the regular equipment, an extension hose at least 50 feet (15 m) in length shall be provided to which the nozzles may be connected. c. Mixtures. Lime, if required, shall be applied separately. in the quantity specified, prior to the fertilizing and seeding operations. Not more than 220 pounds (100 kg) of lime shall be added to and mixed with each 100 gallons (380 liters) of water. Seed and fertilizer shall be mixed together in the relative proportions specified, but not more than a total of 220 pounds (100 kg) of these combined solids shall be added to and mixed with each 100 gallons (380 liters) of water. All water used shall be obtained from fresh water sources and shall be free from injurious chemicals and other toxic substances harmful to plant life. Brackish water shall not be used at any time. The Contractor shall identify to the Engineer all sources of water at least 2 weeks prior to use. The Engineer may take samples of the water at the source or from the tank at any time and have a laboratory test the samples for chemical and saline content. The Contractor shall not use any water from any source which is disapproved by the Engineer following such tests. All mixtures shall be constantly agitated from the time they are mixed until they are finally applied to the seedbed. All such mixtures shall be used within 2 hours from the time they were mixed or they shall be wasted and disposed of at locations acceptable to the Engineer. d: Spraying. Lime, if required, shall be sprayed only upon previously prepared seedbeds. After the applied lime mixture has dried, the lime shall be worked into the top 3 inches (8 cm) , after which the T-901-4 I I seedbed shall again be properly graded and dressed to a smooth finish. Mixtures of seed and fertilizer shall only be sprayed upon previously prepared seedbeds on which the lime, if required, shall already have been worked in. The mixtures shall be applied by means of a high-pressure spray which shall always be directed upward into the air so that the mixtures will fall to the ground like rain in a uniform spray. Nozzles or sprays shall never be directed toward the ground in such a manner as might produce erosion or runoff. Particular care shall be exercised to insure that the application is made uniformly and at the prescribed rate and to guard against misses and overlapped areas. Proper predetermined quantities of the mixture in accordance with specifications shall be used to cover specified sections of known area. Checks on the rate and uniformity of application may be made by observing the degree of wetting of the ground or by distributing test sheets of paper or pans over the area at intervals and observing the quantity of material deposited thereon. 11 On surfaces which are to be mulched as indicated by the plans or designated by the Engineer, seed and fertilizer applied by the spray method need not be raked into the soil or rolled. However, on surfaces on which mulch is not to be used, the raking and rolling operations will be required after the soil has dried. 11 901-3.4 MAINTENANCE OF SEEDED AREAS. The Contractor shall protect seeded areas against traffic or other use by warning signs or barricades, as approved by the Engineer. Surfaces gullied or otherwise damaged following seeding shall be repaired by regrading and reseeding as directed. The Contractor shall mow, water as directed, and otherwise maintain seeded areas in a satisfactory condition until final inspection and acceptance of the work. 11 When either the dry or wet application method outlined above is used for work done out of season, it will be required that the Contractor establish a good stand of grass of uniform color and density to the satisfaction of the Engineer. If at the time when the contract has been otherwise completed it is not possible to make an adequate determination of the color, density, and uniformity of such stand of grass, payment for the unaccepted portions of the areas seeded out of season will be withheld until such time as these requirements have been met. Method of Measurement 901-4. 1 The quantity of seeding to be paid for shall be the number of units acres measured on the ground surface, completed and accepted. ij T-901-5 I Basis of Payment 901-5. 1 Payment shall be made at the contract unit price per acre or fraction thereof, which price and payment shall be full compensation for furnishing and placing all material and for- all labor, equipment, tools, and incidentals necessary to complete the work prescribed in this item. Payment will be made under: Item 901 Seeding--per acre Material Requirements ASTM D 977 Emulsified Asphalt Fed. Spec. JJJ-S-181B Agricultural Seeds Fed. Spec. O-F-241D Commercial Mixed Fertilizer END OF ITEM T-901 T-901-6 ITEM T-908 MULCHING Description 908-1. 1 This item shall consist of furnishing, hauling, placing, and securing mulch on surfaces indicated on the plans or designated by the Engineer. Materials 908-2 . 1 MULCH MATERIAL. Acceptable mulch shall be the materials listed below or any approved locally available material that is similar to those specified. Low grade, musty, spoiled, partially rotted hay, straw, or other materials unfit for animal consumption will be acceptable. Mulch materials, which contain matured seed of species which would volunteer and be detrimental to the proposed overseeding, or to surrounding farm land, will not be acceptable. Straw or other mulch material which is fresh and/or excessively brittle, or which is in such an advanced stage of decomposition as to smother or retard the planted grass, will not be acceptable. a. Straw. Straw shall be the threshed plant residue of oats, wheat, barley, rye, or rice from which grain has been removed. 1 b. Asphalt Binder. Asphalt binder material shall conform to the requirements of ASTM D 977, Type SS-1 or RS-1. 908-2 .2 INSPECTION. Within 5 days after acceptance of the bid, the Engineer shall be notified of sources and quantities of mulch materials available and the Contractor shall furnish him with representative samples of the materials to be used. These samples may be used as standards with the approval of the Engineer and any materials brought on the site which do not meet these standards shall be rejected. Construction Methods 908-3 . 1 MULCHING. Before spreading mulch, all large clods, stumps, stones, brush, roots, and other foreign material shall be removed from the area to be mulched. Mulch shall be applied immediately after seeding. The spreading of the mulch may be by hand methods, blower, or other mechanical methods, provided a uniform covering is obtained. Mulch material shall be furnished, hauled, and evenly applied on the area shown on the plans or designated by the Engineer. Straw or hay shall be spread over the surface to a uniform thickness at the rate of 2 to 3 tons per acre (1800-2700 kg per acre) to provide a loose depth of not less than 1-1/2 inches (37 cm) nor more than 3 inches (75 mm) . Other organic material shall be spread at the rate directed by the Engineer. Mulch may be blown on the slopes and the use of cutters in the equipment for this purpose will be permitted to the extent that at least 95% of the mulch in place on the slope shall be 6 inches (150 mm) or more in length. When mulches applied by the blowing method are cut, T-908-1 I the loose depth in place shall be not less than 1 inch (25 mm) nor more than 2 inches (50 mm) . 908-3 .2 SECURING MULCH. The mulch shall be held in place by light discing, a very thin covering of topsoil, small brush; pins, stakes, wire mesh, asphalt binder, or other adhesive material approved by the Engineer. Where mulches have been secured by either of the asphalt binder methods, it will not be permissible to walk on the slopes after the binder has been applied. The Contractor is warned that in the application of asphalt binder material he must take every precaution to guard against damaging or disfiguring structures or property on or adjacent to the areas worked and that he will be held responsible for any such damage resulting from his/her operations. If the "peg and string" method is used, the mulch shall be secured by the use of stakes or wire pins driven into the ground on 5-foot (150 m) centers or less. Binder twine shall be strung between adjacent stakes in straight lines and crisscrossed diagonally over the mulch, after which the stakes shall be firmly driven nearly flush to the ground to draw the twine down tight onto the mulch. 908-3 .3 CARE AND REPAIR. a. The Contractor shall care for the mulched areas until final acceptance of the project. Such care shall consist of providing protection against traffic or other use by placing warning signs, as approved by the Engineer, and erecting any barricades that may be shown on the plans before or immediately after mulching has been completed on the designated areas. b. The Contractor shall be required to repair or replace any mulching that is defective or becomes damaged until the project is finally accepted. When, in the judgment of the Engineer, such defects or damages are the result of poor workmanship or failure to meet the requirements of the specifications, the cost of the necessary repairs or replacement shall be borne by the Contractor. However, once the Contractor has completed the mulching of any area in accordance with the provisions of the specifications and to the satisfaction of the Engineer, no additional work at his/her expense will be required, but subsequent repairs and replacements deemed necessary by the Engineer shall be made by the Contractor and will be paid for as additional or extra work. c. If the "asphalt spray" method is used, all mulched surfaces shall be sprayed with asphalt binder material so that the surface has a uniform appearance. The binder shall be uniformly applied to the mulch at the rate of approximately 8 . 0 gallons (32 liters) per 1, 000 square feet (100 square meters) , or as directed by the Engineer, with a minimum of 6. 0 gallons (24 liters) and a maximum of 10 gallons (40 liters) per 1, 000 square feet (100 square meters) depending on the type of mulch and the effectiveness of the binder securing it. Bituminous binder material may be sprayed on the mulched slope areas from either the top or the T-908-2 bottom of the slope. An approved spray nozzle shall be used. The nozzle shall be operated at a distance of not less than 4 feet (120 cm) from the surface of the mulch and uniform distribution of the bituminous material shall be required. A pump or an air compressor of adequate capacity shall be used to insure uniform distribution of the bituminous material. d. If the "asphalt mix" method is used, the mulch shall be applied by blowing, and the asphalt binder material shall be sprayed into the mulch as it leaves the blower. The binder shall be uniformly applied to the mulch at the rate of approximately 8. 0 gallons (32 liters) per 1, 000 square feet (100 square meters) or as directed by the Engineer, with a minimum of 6.0 gallons (24 liters) and a maximum of 10 gallons (40 liters) per 1,000 square feet (100 square meters) depending on the type of mulch and the effectiveness of the binder securing it. Method of Measurement 908-4. 1 Mulching shall be measured in acres on the basis of the actual surface area acceptably mulched. Basis of Payment 908-5. 1 Payment win be made at the contract unit price per acre for mulching. The price shall be full compensation for furnishing all materials and for placing and anchoring the materials, and for all labor, equipment, tools, and incidentals necessary to complete the item. Payment will be made under: Item T-908-5. 1 Mulching -- per acre 1 Material Requirements ASTM D 977 Emulsified Asphalt END OF ITEM T-908 I I I 1 T-908-3 TI