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SW8931005_Current Permit_20211105
:';1441141W RO COOPER Governor y *17:ejrzi ELIZABETH&BJSgy�pp Searbsty '. BRIAN WRENN NORTH CAJ UNA Director Qht lty November 5,2021 Onslow County do the Albert J.Ellis Airport Attn:Christopher White,Director 264 Albert J.Ellis Airport Road Richlands,NC 28574 Subject: Permit Correction and Approved Minor Modification Stormwater Permit No.SW8 931005 Albert J.Ellis Airport Onslow County Dear Mr.White: Permit Correction During the review of the minor modification package,the Wilmington Regional Office discovered the previous permit contained an error. This permit correction is to clarify that this project is owned by Onslow County,the property owner for the duration of this permit. Minor Modification On November 4,2021,the Wilmington Regional Office of the Division of Energy,Mineral and Land Resources received a complete minor modification application for changes to the approved plans for Stormwater Management Permit Number SW8 931005. It has been determined that the nature of the proposed change meets the definition of a minor modification in that it does not result in an increase hi the size of stormwater control measure(SCM)and does not increase the amount of built-upon area. Please refer to Attachment C for a detailed desc,4 iption of the current proposed minor modification and a list of all the past modifications approved during the effective period of the permit We are forwarding you an approved copy of the modified plans for your files. Please add the attached plans to the previously approved plan set Please replace the previously issued permit with the revised permit,dated November 5,2021,attached. This revised e A o it does not impose new or different terms;it merely restates some of the previous terms to provide you with a - a - understanding of your obligations under the permit. Please be aware that all terms and conditions of the permit issued on November 5,2021 and modified as attached, remain in full force and effect. Please also understand that the approval of this minor modification to the subject State Stormwater Permit is done on a case-by-case basis. Any other changes to this project must be approved through this Office prior to construction.The approval of this minor modification does not preclude the permittee from complying with all other applicable statutes,rules,regulations or ordinances which may have jurisdiction over the proposed activity,and obtaining a permit or approval prior to construction. If you have any questions concerning this matter,please contact Christine Hall in the Wilmington Regional Office at(910)796-7215 or chr stine.hall r@ncdenr.gov. Sincerely, 04/3-3t —t-914 Brian Wrenn,Director Division of Energy,Mineral and Land Resources Enclosures:: Attachment C-Permitting History Application Documents DES\canh: \\\Storrrnwater\Permits&Projects\1993 1931005 LD\2021 11 permit minor 931005 cc: Tom Slater,PE,RS&H,Inc. Onslow County Building Inspections Onslow County Engineering Wilmington Regional Office Stormwater File >' North Carolina Department of Enviromental Quality I Division.of Energy,Mineral and Land Resources IP IL' Wilmington Regional OFfice 1127 Cardinal Drive Extension 1 Wilmingam.North Carolina 28405 QH1:74(i.72L5 State Stormwater Management Systems Permit No. SW8 931005 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES STATE STORMWATER MANAGEMENT PERMIT LOW DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules and Regulations PERMISSION IS HEREBY GRANTED TO Albert J. Ellis Airport, Onslow County Albert J. Ellis Airport 264 Albert J. Ellis Airport Road, Richlands, Onslow County FOR THE construction, operation and maintenance of a 30% low density development in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the "deemed permitted" requirements of Session Law 2012-200 for Airports as outlined in the application, approved stormwater management plans, supplement, calculations, operation and maintenance agreement, recorded documents, specifications, and other supporting data (the "approved plans and specifications") as attached and/or on file with and approved by the Division of Energy, Mineral and Land Resources (the "Division" or"DEMLR"). The project shall be constructed, operated and maintained in accordance with these approved plans and specifications. The approved plans and specifications are incorporated by reference and are enforceable part of this permit. This permit shall be effective from the date of issuance until rescinded and shall be subject to the following specified conditions and limitations. The permit issued shall continue in force and effect until the permittee files a request with the Division for a permit modification, transfer, renewal, or rescission; however, these actions do not stay any condition. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit for cause as allowed by the laws, rules, and regulations contained in Title 15A NCAC 2H.1000 and NCGS 143-215.1 et.al. I. DESIGN STANDARDS 1. This permit covers the construction of a total of 129.50 acres of proposed built-upon area within a 676.88-acre project area, which includes 26.5 acres of BUA available for future development. 2. The overall tract built-upon area percentage for the project must be maintained at 30% or less, as required by Section .1005 of the stormwater rules. 3. Per Session Law 2012-200, runways, taxiways and any other areas that provide for overland stormwater flow that promotes infiltration and treatment of stormwater into grassed buffers, shoulders and grass swales, are deemed permitted. All built-upon areas of the project must be maintained to meet the requirements of SL 2012-200. 4. Maximum side slopes for all grassed swales shall be 3:1 (H:V) as defined in the stormwater rules and approved by the Division. 5. No piping is allowed except that amount as shown on the approved plans. Page 1 of 5 State Stormwater Management Systems Permit No. SW8 931005 II. SCHEDULE OF COMPLIANCE 1. Projects covered by this permit will maintain a minimum 30-foot wide vegetative buffer between all impervious areas and surface waters. 2. The permittee is responsible for verifying that the proposed built-upon area does not exceed the allowable built-upon area under this permit. 3. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. 4. Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the permitted development, except for average driveway crossings, is strictly prohibited by any persons. 5. Swales and other vegetated conveyances shall be constructed in their entirety, vegetated, and be operational for their intended use prior to the construction of any built- upon surface. 6. During construction, erosion shall be kept to a minimum and any eroded areas of the swales or other vegetated conveyances will be repaired immediately. 7. The permittee must certify in writing that the project's stormwater controls, and impervious surfaces have been constructed within substantial intent of the approved plans and specifications. Any deviation from the approved plans must be noted on the Certification. A modification may be required for those deviations. The permittee shall submit the Certification to the Division within 30 days of completion of the project. 8. No person or entity, including the permittee, shall alter any component shown in the approved plans and specifications. Prior to the construction of any modification to the approved plans, the permittee shall submit to the Director, and shall have received approval for modified plans, specifications, and calculations including, but not limited to, those listed below. For changes to the project or SCM that impact the certifications, a new or updated certification(s), as applicable, will be required and a copy must be submitted to the appropriate DEQ regional office upon completion of the modification. a. Any modification to the approved plans and specifications, regardless of size including the SCM(s), BUA, details, etc. b. Redesign or addition to the approved amount of BUA or to the drainage area. c. Further development, subdivision, acquisition, lease or sale of any, all or part of the project and/or property area as reported in the approved plans and specifications. d. Altering, modifying, removing, relocating, redirecting, regrading, or resizing of any component of the approved SCM(s), the stormwater collection system and/or vegetative conveyance shown on the approved plan. e. The construction of any allocated future BUA. f. The construction of any permeable pavement, #57 stone area, public trails, or landscaping material to be considered a permeable surface that were not included in the approved plans and specifications. g. Additional built-upon area over and above 129.40 acres. h. Any changes that affect compliance with Session Law 2012-200. i. Other modifications as determined by the Director. 9. The permittee shall at all times provide the operation and maintenance necessary to operate the permitted stormwater management systems at the design condition to include: a. Inspections b Sediment removal. c. Mowing, and re-vegetating of the side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans and specifications. Page 2 of 5 State Stormwater Management Systems Permit No. SW8 931005 10. The permittee shall submit all information requested by the Director or his representative within the time frame specified in any written information request. 11. ANNUAL CERTIFICATION. The permittee shall electronically submit to the Division an annual certification completed by either the permittee or their designee confirming the projects conformance with permit conditions. III. GENERAL CONDITIONS 1. CORRECTIVE ACTIONS REQUIRED. If the facilities fail to perform satisfactorily, the permittee shall take immediate corrective actions. This includes actions required by this Division and the stormwater rules such as the construction of additional or replacement on-site stormwater systems. These additional or replacement measures shall receive a permit from the Division prior to construction. 2. CURRENT PERMITTEE NAME OR ADDRESS CHANGES. The permittee shall submit a completed Permit Information Update Application Form to the Division within 30 days to making any one or more of the following changes: a. A name change of the current permittee; b. A name change of the project; c. A mailing address change of the permittee; 3. TRANSFER. This permit is not transferable to any person or entity except after notice to and approval by the Director. Neither the sale of the project and/or property, in whole or in part, nor the conveyance of common area to a third party constitutes an approved transfer of the permit. a. TRANSFER REQUEST. The transfer request must include the appropriate application, documentation and the processing fee as outlined in 15A NCAC 02H.1045(2). This request must be submitted within 90 days of the permit holder meeting one or more of the following: i. A natural person who is deceased; ii. A partnership, limited liability corporation, corporation, or any other business association that has been dissolved; iii. A person or entity who has been lawfully and finally divested of title to the property on which the permitted activity is occurring or will occur through foreclosure, bankruptcy, or other legal proceeding. iv. A person or entity who has sold the property, in whole or in part, on which the permitted activity is occurring or will occur; b. TRANSFER INSPECTION. Prior to transfer of the permit, a file review and site inspection will be conducted by Division personnel to ensure the permit conditions have been met and that the project and the on-site stormwater system complies with the permit conditions. Records of maintenance activities performed to date may be requested. Projects not in compliance with the permit will not be transferred until all permit and/or general statute conditions are met. 4. COMPLIANCE. The permittee is responsible for compliance with the terms and conditions of this permit until the Division approves the transfer request. a. APPROVED PLANS AND SPECIFICATIONS. A copy of this permit, approved plans, application, supplement, operation and maintenance agreement, all applicable recorded documents, and specifications shall be maintained on file by the permittee at all times. b. DIVISION ACCESS. The permittee grants Division Staff permission to enter the property during normal business hours to inspect all components of the permitted project. c. ENFORCEMENT. Any individual or entity found to be in noncompliance with the provisions of a stormwater management permit or the requirements of the Page 3 of 5 State Stormwater Management Systems Permit No. SW8 931005 stormwater rules is subject to enforcement procedures as set forth in NCGS 143 Article 21. d. OBTAINING COMPLIANCE. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of modified plans and certification in writing to the Director that the changes have been made. e. OTHER PERMITS. The issuance of this permit does not preclude the permittee from complying with and obtaining any other permits or approvals that are required for this development to take place, as required by any statutes, rules, regulations, or ordinances, which may be imposed by any other Local, State or Federal government agency having jurisdiction. Any activities undertaken at this site that cause a water quality violation or undertaken prior to receipt of the necessary permits or approvals to do so are considered violations of NCGS 143- 215.1, and subject to enforcement procedures pursuant to NCGS 143-215.6. Permit modified, updated and reissued this the 4th day of November 2021. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION C,vLtt 7-/ . Brian Wrenn, Director Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Page 4 of 5 State Stormwater Management Systems Permit No. SW8 931005 ATTACHMENT C— Permitting History November 4, 2021 — Minor Modification to utilize 1.59 acres of future BUA as "Other Onsite"for the holding bay and service road improvements. Correcting the permit to list the property owner, Onslow County, which has owned this property for the duration of this permit. April 29, 2019—Adds 1.9 acres of BUA for General Aviation Apron expansion, access road, hangar, parking lot and sidewalk. October 17, 2016—Adds 0.5 acres of BUA for Apron Expansion and Hangar. February 27, 2015—Adds 1.39 acres of BUA for a Temporary Rental Car Service Center. January 29, 2015—Adds 4.45 acres of BUA for a General Aviation Terminal Building, parking lot, access road and Apron. May 2, 2013— 1) Converts the low density permit to "deemed permitted" status under SL 2012- 200 for 129.4 acres of built-upon area. 2) Combines two permits into one. The existing high density permit SW8 000810 is consolidated with the low density permit. 3) Eliminates the Sand Filter that was permitted under the old SW8 000810 high density permit. April 26, 2011 —Adds 10,975 square feet of BUA for a pump station. January 20, 1995— Issued a modified low density "Certification of Compliance" for 12.1 acres of BUA. October 6, 1993 — Issued the original low density "Certification of Compliance" for 8 acres of BUA. Page 5 of 5 DEMLR USE ONLY Date Reeteivid Fee Paid Permit Number 10 I I -tP-Viwoe /o `' e'--c- ,Swe 'L i oc - STORMWATER PERMITTING FORM 7: MINOR MODIFICATION Standard Permitting Program—No Fee for Minor Modification Express Permitting Program— See Express Fee Schedule Only complete applications packages will be accepted and reviewed. This form and the required items (with original signatures)must be sent to the appropriate DEMLR Regional Office, which can be determined by locating the project on the interactive online map at:http://deq.nc.gov/contact/regional-offices. This form is to only to be used by the current permittee to notify the Division of a minor modification. Pursuant to Rule 15A NCAC 02H.1002, a minor modification is a change to the project that: 1)does not increase the net built-upon area;and/or 2)does not change the size or design of the SCM(s). A. GENERAL INFORMATION 1. State Stormwater Permit Number: SW8 931005 2. Current Permit Holder's Company Name/Organization: Onslow County 3. Signing Official's Name: Christopher White 4. Signing Official's Title: Albert J. Ellis Airport Director 5. Mailing Address: 264 Albert J. Ellis Road City: Richlands State: NC ZIP: 28574 6. Street Address (if different): : City: State: ZIP: 7. Phone: (910)989-3162 Email: chris wite(d)_onslowcountvnc.gov 8. Describe the minor modifications that you are requesting, including any revised BUA allocations (attach additional pages or supporting tables similar to Section IV.10 of the original application, if needed): The proposed project includes the mill and overlay of existing asphalt BUA,with the addition of an aircraft holding bay. This holding bay will be new BUA. Additional BUA is also being added by a service road for airport firefighting vehicles to have appropriate response times in the even of an emergency. This project will add a total of 1.59 acres of BUA to the overall permitted BUA at the airport. B. SUBMITTAL REQUIREMENTS Please mark"Y"to confirm the items are included with this form. Please mark"X"if previously provided. If not applicable or not available, please mark N/A.: Y 1. Two hard copies(with original signatures)and one electronic copy of this completed form. Y 2. Two hard copies and one electronic copy of the revised plan sheets(must be a revision of the originally approved plan sheets). NA 3. If there is reallocation of lot BUA, a copy of the revised recorded deed restrictions and protective covenants OR the proposed recorded deed restrictions and protective covenants documenting the changes and a signed agreement to provide the final recorded document. Y 4. If applicable,the appropriate Express review fee. il:o v OCT 012021 BY Stormwater Permit Form 7: Minor Modification Page 1 of 2 July 14,2017 C. CONTACT INFORMATION 1. The Design Professional who is authorized to provide information on the Applicant's behalf: Design Professional's Name:Tom Slater, PE Consulting Firm: RS&H Mailing Address:8521 Six Forks Road, Suite 400 City:Raleigh State:NC Zip:27615 Phone: (919) 926-4101 Fax: ( ) Email: :tom.slaterrsandh.com 2. [OPTIONAL] If you would like to designate another person to answer questions about the project: Name&Title:Stephen Rich,Aviation Water Resources Engineer Organization: RS&H Mailing Address:8521 Six Forks Road, Sutie 400 City:Raleigh State:NC Zip:27615 Phone: (919) 926-4148 Fax: ( ) Email: :stephen.richarsandh.com D. CERTIFICATION OF PERMITTEE I, Christopher White ,the current permittee, certify that I have authorized the minor modifications listed in Section A and shown in the attached revised plan sheets. I further attest that this information is accurate and complete to t of my knowledge. Signature. r . -15 k..1-.),‘22-- Date: \ \1 to (um I, 0 CIVIWM.cI , a Notary Public for the State of /VOy't-h eayokn. County of ©V v 1OUJ , do hereby certify that Girl 3tz) V U0 Vl L+1J personally appeared before me this the I Lt-i--h day of ,20 Al and acknowledge the due execution of the forgoing instrument. Witness my hand and official seal, SANDRA J JANSSEN (Notary Seal) NOTARY PUBLIC rY ONSLOW COUNTY STATE OF NORTH MY COMMISSION EXPIRES CAR0NA 5117--2024 Notary Signature My commission expires Mcik., 11 ) a1 `"I Ra--,vim.....^, ^... OCT 012021 i j BY: Stormwater Permit Form 7: Minor Modification Page 2 of 2 Oct 6,2017 IV. PROJECT INFORMATION 1. In the space provided below,briefly summarize how the stormwater runoff will be treated. Runoff will be treated utilizing overland flow through disconnected impervious surfaces over uniform gently sloped surfaces in accordance with part E-4 Airport of the NCDEQ Stormwater Design Manual. 2.a.If claiming vested rights,identify the supporting documents provided and the date they were approved: ❑Approval of a Site Specific Development Plan or PUD Approval Date: ❑Valid Building Permit Issued Date: ❑Other: Date: b.If claiming vested rights,identify the regulation(s)the project has been designed in accordance with: ❑Coastal SW-1995 ❑Ph II-Post Construction 3. Stormwater runoff from this project drains to the Cape Fear&White Oak River basin. 4. Total Property Area: 676.88 acres 5. Total Coastal Wetlands Area: 0 acres 6. Total Surface Water Area: 0 acres 7. Total Property Area(4)-Total Coastal Wetlands Area(5)-Total Surface Water Area(6)=Total Project Areal-: 676.88 acres + Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area between the banks of streams and rivers, the area below the Normal High Water(NHVV)line or Mean High Water (MHW)line,and coastal wetlands landward from the NHW(or MHVV)line. The resultant project area is used to calculate overall percent built upon area(BLIA). Non-coastal wetlands landward of the NHW(or MHVV)line may be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area/Total Project Area)X 100 = 19.13 % 9. How many drainage areas does the project have? 1 (For high density,count 1 for each proposed engineered stormwater BMP. For low density and other projects,use 1 for the whole property area) 10. Complete the following information for each drainage area identified in Project Information item 9. If there are more than four drainage areas in the project,attach an additional sheet with the information for each area provided in the same format as below. Basin Information Drainage Area 1 Drainage Area_ Drainage Area_ Drainage Area_ Receiving Stream Name Back Swamp/Southwest Creek Stream Class * C;Sw/C;NSW Stream Index Number* 18-74-26-1/19-17-(0.5) Total Drainage Area(sf) 29,484,893 ► 1 ; On-site Drainage Area(sf) 29,484,893 Off-site Drainage Area(sf) 0 0 T o l_ 2 _Proposed Impervious Area**(sf) 5,641,020 Q %Impervious Area**(total) 19.13 �� Impervious'Surface Area Drainage Area 1 Drainage Area_ Drainage Area_ Drainage Area On-site Buildings/Lots(sf) 0 On-site Streets (sf) 0 On-site Parking (sf) 0 On-site Sidewalks (sf) 0 I Other on-site (sf) 69,260 Future(sf) 1,154,340 Off-site (sf) 0 Existinj BUA***(sf) 4,417,420 Total (sf): 5,641,020 * Stream Class and Index Number can be determined at: http://portal.ncdenr.org/web/wy/ps/csu/classifications ** Impervious area is defined as the built upon area including,but not limited to,buildings,roads,parking areas, sidewalks,gravel areas,etc. Form SWTJ-101 Version Oct.31,2013 Page 3 of 6 • For DEQ Use ONLY Reviewer: N /R H North Carolina Department of Environmental Quality Submit t�t�--1r21 Request for Express Permit Review Time: O 4M Confirm: FILL-IN all the information below and CHECK the Permit(s)you are requesting for express review. Call and Email the completed form to the Permit Coordinator along with a completed DETAILED narrative,site plan(PDF file)and vicinity map(same items expected in the application package of the project location.Please include this form in the application package. Asheville Region-Alison Davidson 828-296-4698;alison.davidsonencdenr.gov Provided Existing e related to this Protectctmits • Fayetteville and Raleigh Regions-David Lee 919-791-4204;davld.lee(r.ncdenr.Qov • Mooresville and Winston-Salem Regions-Paul Williams 336-776-9631;paul.e.williams(otncdenr.gov SW— • Washington Region-Lyn Hardison 252-948-3842 or/vn.hardisonil ncdenr.gov SW • Wilmington Region-Cameron Weaver 910-796-7265 or cameron.weaver(c8ncdenr.gov NPDES NOTE:Project application received after 12 noon will be stamped in the following work day. NPDES WQ_ Project Name:-" _...._._, County:ONSLOW WQ Applicant:ONSLOW COUNTY Company:ALBERT J.ELLIS AIRPORT E&S Address:264 ALBERT J.ELLIS AIRPORT ROAD City:RICHLANDS,State:NC Zip:28574-_ E&S Phone:910-989-3162,Fax: _ ,Email:chris whites@onslowcountvnc.gov Other Physical Location:TURN FROM NC-111 ONTO ALBERT J.ELLIS ROAD,PROJECT AREA IS AIRSIDE SECURE Project Drains into BACK SWAMP&SOUTHWEST CREEK waters-Water classification C;SW&C;NSW(DWR Surface Water Classifications Map) Project Located in CAPE FEAR&WHITE OAK River Basin.Is project draining to class ORW waters? N,within'/2 mile and draining to class SA waters N or within 1 mile and draining to class HQW waters?N Engineer/Consultant:TOM SLATER Company:RS&H Address:8521 SIX FORKS ROAD SUITE 400 City:RALEIGH,State:NC Zip:27615-_ (C.C ep t-e Cl Phone:919-926-4101.Fax: -_ , Email:tom.slater@rsandh.com PLEASE PROVIDE ESTIMATED INVESTMENT AND EXPECTED EMPLOYMENT,IF AVAILABLE 1 C7/ t P 1-OZ 1 $ # JOBS SECTION ONE: REQUESTING A SCOPING MEETING ONLY '❑Scoping Meeting ONLY ❑DWR, ❑DCM, ❑DEMLR, ❑OTHER: SECTION TWO: CHECK ONLY THE PROGRAM(S)YOU ARE REQUESTING FOR EXPRESS PERMITTING El 401 Unit El Stream Origin Determination: #of stream calls-Please attach TOPO map marking the areas in questions El Intermittent/Perennial Determination:_#of—stream calls-Please attach TOPO map marking the areas in questions ❑401 Water Quality Certification ❑ Isolated Wetland( linear ft or_acres) El Riparian Buffer Authorization El Minor Variance ❑Major General Variance state Stormwater El General El SFR, ❑SFR<1 ac. El Bkhd&Bt Rmp, ❑Clear&Grub, ❑Utility El Other ❑ ❑Low Density-Curb&Gutter _#Curb Outlet Swales ❑Off-site[SW (Provide permit#)] ❑High Density-Detention Pond _#Treatment Systems ❑High Density-Infiltration _#Treatment Systems ❑High Density-Bio-Retention _#Treatment Systems ❑High Density-SW Wetlands _#Treatment Systems ❑High Density-Other _#Treatment Systems/E"'^ :® L,Major '"'s or El Plan Revision ❑Redev.Exclusion SW (Provide permit#) ❑Coastal Management El Excavation&Fill ❑Bridges&Culverts ❑Structures Information ❑Upland Development ❑Marina Development ❑Urban Waterfront ,dy Lana wuaaiy - __.,..,.,,.w.. "` acres to be disturbed.(CK# &Amt. (for DEQ use)) SECTION THREE-PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT(for both scoping and express meeting request) Wetlands on Site El Yes®No Buffer Impacts: El No®YES: acre(s) Wetlands Delineation has been completed:El Yes Z No Isolated wetland on Property El Yes®No US ACOE Approval of Delineation completed:El Yes®No 404 Application in Process w/US ACOE: ❑Yes ® No Permit Received from US ACOE El Yes ®No For DEQ use only Fee Split for multiple permits:(Check# ) Total Fee Amount$ SUBMITTAL DATES Fee SUBMITTAL DATES Fee CAMA $ Variance(❑Maj;❑Min) $ SW(❑HD,❑LD,❑Gen) $ 401: $ LQS $ Stream Deter,_ $ NCDEQ EXPRESS June 2019 Albert J. Ellis Airport RSI1 Taxiway A Rehabilitation Erosion and Sedimentation Control Permit EXECUTIVE SUMMARY Project Description Albert J. Ellis Airport is located is located 6 miles southwest of Richlands, NC in Onslow County. The main entrance for the airport is Albert J. Ellis Airport Road,which serves as a loop road for the airport and ties into North Carolina Route 111. See Figure 1 —Site Vicinity Map. Figure 1 —Site Vicinity Map til 9 N,J1 lM1rx,n Albert J. Eitiz Airport [ e tr t t M-' X Onslow County, owner and operator of the Albert J. Ellis Airport (OAJ) has retained RS&H Architects-Engineers-Planners, Inc.(RS&H)to provide civil engineering and design services for the rehabilitation of Taxiway Alpha (A). The overall program includes milling and overlaying asphalt pavement and the construction of a new hold bay. Refer to Figure 2 in Appendix A for the Overall Project Map. The project is ten phases to be completed in 120 days. Herein, the rehabilitation of Taxiway A will be referred to as either"Taxiway A", "taxiway rehab", or"the project" (See Figure 2 in Appendix A). The project location is at 34.82835 degrees N and 77.594478 degrees W. Site Description Taxiway A is of fairly level grade throughout the site.The only area disturbed during this project will be the construction of the new hold bay and contractor staging and parking areas. The area on which the hold bay will be constructed is of minimal grade and its final grade will be 1%. The entire project limits are owned by Onslow County, and the project area is surrounded by land owned by the County. 1 Albert J. Ellis Airport Taxiway A Rehabilitation Erosion and Sedimentation Control Permit EXISTING CONDITIONS The airport property is located within the Cape Fear River Basin and White Oak River Basin. The majority of the drainage for the project flows to existing open conveyance ditches which then flow into existing culverts undermining pavement which then daylight into more existing ditches, eventually flowing off airport property. The hydrologic parameters of the existing basins within the project area are summarized below in Table 1. Total Area knpervi lA Time of Basin %� � B1JA Concentration (A (Minutes) Cape Fear 165.38 38.45 23.25% 47 River [White Oak 77.27 19.37 25.07% 194 Basin Delineation and Drainage Patterns The existing area is divided into 15 individual drainage basins. Refer to Figure 3 in Appendix A for the Existing Drainage Basin Conditions. Existing Conditions Discharge Based on the existing pervious and impervious areas for drainage areas within the project site,the Rational Method was used to calculate the peak discharge for the 2-year and the 10-year design storms. Refer to Appendix A for Supporting Calculations for additional information. CONSTRUCTION CONDITIONS Basin Description The existing basin conditions for the project area consists of 23.83% BUA. The open conveyances for the project area lead to piped conveyance systems that exit the airport property. Current surface water discharge causes no noticeable erosion or sedimentation problems in the area,and the main drainage patterns will be maintained throughout the construction process and remain in place after construction. 2 Albert J. Ellis Airport Rsasi Taxiway A Rehabilitation Erosion and Sedimentation Control Permit Construction Runoff Conditions The runoff calculations for the site during construction have taken the following assumptions into consideration: 1. All proposed grading and paving complete 2. All pervious areas denuded and awaiting cover 3. Peak runoff rates do not consider flow losses due to erosion control devices Considering that there are few major drainage changes during the project and considering the assumptions above, the construction run off condition will mirror that of the post-construction conditions. See Appendix A for runoff calculations. Prescribed Construction Approach The limits of disturbance are completely confined within the project limits with the exception of the staging area, intermediate equipment storage area, and contractor employee parking area. All areas are included in the limits of disturbance.The staging area will primarily serve as staging and storage for contractor equipment and is currently an established permeable area.This area will not disturb more than 0.5 acres of land. As a precautionary measure,silt fencing will be placed around the staging area for the duration of the project to prevent any erosion.All prescribed erosion control devices shall be installed prior to the start of land disturbing activity following the details and methods in the Contract Documents as well as the NC DEQ Erosion and Sedimentation Design Manual. Haul routes used during the project are established impervious private airport roads.Since no disturbance is expected on the hauling and access routes since they are well established and paved, silt fencing will not be initially placed. However, silt fence will be on site and available as needed to be placed along the access and hauling roads if disturbance and erosion does occur. The Contractor is required to immediately control all erosion on access roads if disturbance occurs. For the project area, given the sensitive nature of an active airfield and strict FAA requirements for active runway and taxiway operations and since overland flow is the primary source of infiltration, large groups of inlets have been defined as the project drainage basins. Erosion control methods requiring ponding of water act as wildlife attractants and create hazardous conditions for active aircraft operations.The FAA has strict regulations prohibiting this practice where possible per FAA Advisory Circular (AC) 150/5200-33B Hazardous Wildlife Attractants on or Near Airports. Due to the proximity to an active taxiway and runway during this project,sediment traps, basins, and other surface dewatering devices are not practical or safe to implement. This decision is allowed and supported by N.C.G.S 143-214.7(c3) which states, "In accordance with the Federal Aviation Administration August 28, 2007, Advisory Circular No. 150/5200-33B (Hazardous Wildlife Attractants on or Near Airports), neither the Department nor any local government shall require the use of stormwater retention ponds, stormwater detention ponds, or any other stormwater control measure that promotes standing water in order to comply with this section, or in order to comply with any local ordinance adopted under G.S. 143-214.5, at public airports that support commercial air carriers or general aviation services." The project,totaling just over 3.56 acres of disturbed area which includes the staging, storage, and contractor parking areas, has been phased in ten phases. 3 Albert J. Ellis Airport r?S6H Taxiway A Rehabilitation Erosion and Sedimentation Control Permit See Attachment No. 1 — Phasing Plan for the project phasing. See Appendix A for drainage basin maps and a drainage basin summary. The drainage basins will not be changing once construction is completed.All infield inlets are to have well-established turf prior to entering the inlet which serves as erosion control. The contractor is also required to limit the amount of disturbed area to less than one acre per the attached erosion control plans at any given time. Regular maintenance and sediment removal is required each week and after storm events of all erosion control devices at a minimum. The Contractor is also required to place compacted aggregate immediately after soil disturbance in areas where new pavement is being placed. The majority of the disturbed area that is not paved of the project is land grading and will be sodded. Upon completion of the project and once all disturbed areas are permanently stabilized, the Contractor shall remove the erosion control devices along with all accumulated sediment. No dewatering is needed given the nature of the erosion control devices being utilized. Areas disturbed by the erosion control devices shall be permanently seeded and restored to their original state. SUPPORTING CALCULATIONS Refer to Appendix A for all runoff calculations and results. PLANNED EROSION AND SEDIMENTATION CONTROL PRACTICES 1. Land Grading — Practice 6.02 Grading will be required for 2.64 acres of the disturbed area. See Attachment No. 3 — Erosion and Sedimentation Control Plans and Details. There are strict FAA requirements in place requiring flatter slopes for aircraft operational safety. All cut slopes will be 25% or flatter to avoid instability due to wetness, provide fill material, and allow vegetated slopes to be mowed. 2. Permanent Seeding — Practice 6.11 The contractor staging and parking areas will be seeded upon completion the project. A centipedegrass seed will be spread into place in the entirety of the staging and parking areas. See Attachment No.3—Erosion and Sedimentation Control Plans and Details for exact locations. 3. Sodding — Practice 6.12 Ditch bottoms and pervious areas around the new hold bay will be sodded upon completion of final grade and project. A NC State Certified centipedegrass shall be utilized. See Attachment No. 3 — Erosion and Sedimentation Control Plans and Details for exact locations. 4 Albert J. Ellis Airport RSa1 Taxiway A Rehabilitation Erosion and Sedimentation Control Permit 4. Rolled Erosion Control Products — Practice 6.17 Rolled Erosion Control Products will be installed on ditch bottoms and the steepest slope grading to protect and facilitate the growth of seed and sod. See Attachment No. 3 — Erosion and Sedimentation Control Plans and Details for exact locations. 5. Temporary Silt Fence — Practice 6.62 Sediment/silt fence shall be installed to retain sediment from small disturbed areas by reducing the velocity of sheet flows to allow sediment deposition. Temporary Silt Fence will be installed as an around all grading and staging and parking locations. Silt fencing will have collected sediment removed as needed. 6. Check Dam — Practice 6.83 Check dams will be used as a temporary measure to limit erosion by reducing the velocity of flow in the airport's open conveyance ditches. The contractor shall be required to clean the dams of collected sediment regularly. See Attachment No. 3 — Erosion and Sedimentation Control Plans and Details for exact locations. 7. Dust Control — Practice 6.84 Dust control could be a possible problem due to the large project site and the sensitivity to pilots.The contractor shall be required to control the site by the use of sprinkling. The site will be sprinkled as required or at the owner's or engineer's request. MAINTENANCE PLAN The following notes are for the maintenance and control of the temporary erosion and sedimentation devices: 1. All erosion and sediment control practices will be checked for stability and operation following every runoff-producing rainfall; however, at a minimum of once a week should there be no run-off producing rainfall.Any repairs will be made immediately to maintain all practices as designed. 2. Sediment will be removed from the check dams and the gravel will be replaced when storage capacity has been approximately fifty percent (50%)filled. Gravel will be cleaned or replaced when the dam no longer drains properly. All check dams will be inspected weekly, at a minimum, and after each storm event. 3. Sediment will be removed from behind the sediment fence if it becomes about six inches (6") deep at the fence. The sediment fence will be repaired as necessary to maintain a 5 Albert J. Ellis Airport RS6H Taxiway A Rehabilitation Erosion and Sedimentation Control Permit barrier. The following notes describe the maintenance plan for the completed surface water management system (post construction erosion and sedimentation control) 1. All vegetated channels will be mowed to a level of two to three inches in height. All necessary yearly maintenance including fertilizer will be conducted on a regular basis to keep a healthy and vibrant vegetative channel. 2. Any erosion observed during regular maintenance will be immediately corrected to match proposed design. Proposed Construction Commencement: September 2021 Proposed Construction Duration:4 months Contact for Erosion and Sediment Control: Chris White, Onslow County VEGETATIVE PLAN General Millet grass is expressly prohibited from use anywhere on the project. Fertilizer The quality of all fertilizer and all operations in connection with the furnishing of this material must comply with the requirements set forth by the FAA in effect at the time of sampling.All fertilizer will be subject to sampling and testing by the Engineer. Dry fertilizer shall be manufactured from cured stock. Care for the fertilizer during handling and storing in such a manner that it will be protected against hardening, caking, or loss of plant food values. Pulverize any hardened or caked fertilizer to its original condition before being used. Store and care for liquid fertilizer after manufacture in a manner that will prevent loss of plant food values and maintain or reblend a homogeneous blend of plant food elements to the original condition immediately before use. Catalogue data and certification showing that the guaranteed analysis of the fertilizer meets FAA requirements is to be submitted by the Contractor. Limestone The quality of all limestone and all operations in connection with the furnishing of this material must comply with the requirements set forth by the FAA in effect at the time of sampling. All limestone will be subject to sampling and testing by the Engineer. 6 Albert J. Ellis Airport nal Taxiway A Rehabilitation Erosion and Sedimentation Control Permit All limestone shall contain not less than 85 percent calcium carbonate equivalents. Grade limestone so that at least 90 percent will pass through a U.S. Standard 20 mesh (0.850 mm) screen and at least 50 percent will pass through a U.S. Standard 100 mesh (0.15 mm) screen. During handling and storing, care for the limestone in such manner that it will be protected against hardening or caking. Pulverize any hardened or caked limestone to its original condition before being used. Seed The quality of all seed and all operations in connection with the furnishing of this material shall comply with the Federal Specification JJJ-S-181 and with the rules and regulations,adopted by the FAA in accordance with said law,in effect at the time of sampling,and with the quality requirements of the Standard Specifications.All seed will be subject to sampling by the Engineer.Supplementary testing for seed germination may be performed by the Engineer. Water Water used in the planting or care of vegetation must be obtained from a fresh water source and shall be free from injurious chemicals and other toxic substances harmful to plant life. The Contractor shall identify to the Engineer all sources of water for approval. Repairing When the surface has become bullied or otherwise damaged during the period covered by this contract,the affected areas shall be repaired to re-establish the grade and the condition of the soil, as directed by the Engineer or owner. POST CONSTRUCTION CONDITIONS Basin Delineation and Drainage Patterns The proposed design increases the amount of impervious area by 2.75% and uses the existing ouffalls for drainage. Currently, there are 57.83 acres of impervious area contained in the delineated basins that contain the project site.The proposed design increases the total impervious area to 59.42 acres. See Figure 3 in Appendix A for the Proposed Drainage Basins Exhibit. NRCS Soils and Runoff Coefficients The majority of the proposed soil strata for this site will be composed of the re-graded existing soil material or soil of like characteristics. Therefore, proposed soils will be taken as equivalent with the existing. Because the proposed, re-graded soil material will be the re-graded existing material or soil of like characteristics, similar runoff coefficients were used for basin runoff calculations. 7 Albert J. Ellis Airport RSII Taxiway A Rehabilitation Erosion and Sedimentation Control Permit Treatment Requirement Summary The proposed project has been designed to meet the requirements of Session Law 2012-200.This permit covers the construction of 1.46 acres of paved upon area within the airport property. This results in a net increase of impervious area of 1.46 acres. Using the design criteria established for the site and the current BMP toolbox for airport developments, some BMP's were identified as suitable for use at OAJ. Those BMP's are: • Open Conveyances • Disconnected Impervious Area/Overland flow Open Conveyances—This BMP has been utilized to the maximum extent possible on the airfield. The existing swales on the site have proven to me suitable and maintainable by the Airport. They have also been shown to be effective at removing pollutants and suspended solids from average storm events. Maintenance of these features consists of routine mowing and removal of trash and other debris. Disconnected Impervious Area/Overland Flow — FAA grading criteria governs the width and slope of the areas immediately adjacent to runways,taxiways and aprons. These areas, known as shoulders and safety areas, are relatively flat(less than 5%)and in most cases wider than the area flowing to them.All impervious area within the project limits flows over a turf area of varying widths prior to entering the storm drain system. Proposed Conditions Discharge Based on the proposed pervious and impervious areas for drainage areas within the project site, the Rational Method was used to calculate the peak discharge for the 2-year and the 10-year design storms.Refer to Supporting Calculations for additional information.The proposed conditions do not change the existing basin configurations. CONCLUSION The rehabilitation of Taxiway A at Albert J. Ellis Airport will enhance the ability for the airport to serve current and future patrons, creating a better and safer environment for all travelers. This program will be an important step in maintaining the status as a premier airport for commercial and general aviation traffic. 8 1.1 PROJECT DESCRIPTION Albert J. Ellis Airport(OAJ) is located in Onslow County, North Carolina, approximately 12 miles northwest of the City of Jacksonville, North Carolina, at the intersection of North Carolina State Route 111 and Albert Ellis Airport Road. See Figure 1 —Site Vicinity Map. FIGURE 1:SITE VICINITY MAP .r,i Crootan I ALBERT J.ELLIS AI 4 „, .• � KEY MAP Taxiway Alpha (A) is the full-length parallel taxiway for Albert J. Ellis airport and was constructed in 1977 and has been rehabilitated once in 1994.The proposed project includes milling, overlaying, and constructing a new hold bay. Construction plans for the proposed project are included in Appendix B. The proposed project will add 1.59 acres of Built-Upon Area (BUA)for a total of 103.00 acres of BUA that will exist at the airport upon project completion.This does not exceed the maximum amount of permitted BUA of 129.50 acres at the airport. Refer to Table 1 for project and airport BUA amounts. TABLE 1:PROPOSED PROJECT BUA BUA Permit Area % BUA acres square feet acres square feet Existing at Airport 101.41 4,417,420 676.88 29,484,893 14.98% Proposed Project 1.59 69,260 --- ---- Total at Airport after Project 103.00 4,486,680 676.88 29,484,893 15.22% Future at Airport 26.5 1,154,340 Total at Airport 129.50 5,641,020 676.88 29,484,893 19.13% 1.2 PERMIT APPROACH This project is a major modification to State Stormwater Management Permit No. SW8 931005 issued on May 2, 2013. Per Section ll.10.e of permit No. SW8 931005,this project is development of the designated Onslow Ccunty 2 Permit Modification Albert J. Ellis Airport July 2021 Taxiway A Rehabilf_}ation future development areas. Refer to Figure 2 in Appendix A Albert J. Ellis Airport Proposed &Future Development Phases as submitted with the permit modification approved on May 2, 2013. Runoff from the built-upon areas of the project flows over grassed buffers/shoulders and into grassed swales to the maximum extent practicable. Pipes are only proposed to convey flow under roadways/driveways.The swale side slopes are maintained at 4:1 or flatter. The proposed project meets the requirements of Session Law 2012-200, Senate Bill 229.The design provides overland flow that promotes infiltration and treatment of stormwater runoff from the built upon areas into grassed buffers, shoulders, and grassed swales to the maximum extent practical. No built upon areas are directly connected to the pipe system.The natural flow paths and outfalls of the project are preserved in the proposed design.The proposed project utilizes several Best Management Practices (BMPs) identified in Chapter 13 for Airports in the DENR BMP manual.Those BMP's are: » Disconnected Impervious Area/Overland Flow » Open Grassed Swales 1.2.1 Disconnected Impervious Area/Over land Flow FAA grading criteria governs the width and slope of the areas immediately adjacent to runways, taxiways and aprons. These areas, known as shoulders and safety areas,are relatively flat(less than 3%) and in most cases wider than the area flowing to them. This BMP is utilized for stormwater runoff from the BUA associated with the proposed pavement. Research has shown that the majority of the pollutant removal occurs in the first 8 feet of overland flow. Maintenance of this area consists of routine maintenance and preservation of the stand of grass. 1.2.2 Open Grassed Swales This BMP has been utilized to the maximum extent possible within the project area. Grassed swales have been shown to be effective at removing pollutants and suspended solids from average storm events. This BMP has been utilized off the edge of the proposed hold bay. Maintenance of these features consists of routine mowing and removal of trash and other debris. 1.3 CONCLUSION The proposed Taxiway A Rehabilitation project is revising State Stormwater Management Permit No.SW8 931005 by adding 1.59 acres of BUA.The proposed project complies with the requirements of Session Law 2012-200,Senate Bill 229, which allows for the proposed activities to be deemed permitted. Onslow County Permit Modification Abert J. Ellis Airport July 2021 Taxiway A Rehabilitation . . - . . . . . . 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''-.^'-.4.,tit'. , AL"' •" - ; .;‘!..:•••*-0-r_i .- -. ...,. ., .Y.. ir': ...•• _.-...: _,...... 4, -Z.71-• • .. .....".--4..... . ., • . •• •......•.. . . „..,.. .... '7'.:77,.._, .0.. ' '..4:.....1..1.:-.::•. .•-•• : .-•.'•. - • 'i -- _4. ...1 • 4.1.4f ::t.•'-_-,4r' r.:-. .''''.,,,. _.. .v...4.._....... .,..'. •• •'-`• .e... • ....'- • .-. !... • _,,t • •••.. li - •...t .:440110' 1, '- •--...., . • - 'I 114 / ' 1. ''.._ .. .. t . . ......_.: .. _,_ • _ ..•.. . I. ,• ... . 1 , . . • .• . -...---.-.----.. - • , . .-. • .- • ....)_ future development areas. Refer to Figure 2 in Appendix A Albert J. Ellis Airport Proposed &Future Development Phases as submitted with the permit modification approved on May 2, 2013. Runoff from the built-upon areas of the project flows over grassed buffers/shoulders and into grassed swales to the maximum extent practicable. Pipes are only proposed to convey flow under roadways/driveways.The swale side slopes are maintained at 4:1 or flatter. The proposed project meets the requirements of Session Law 2012-200, Senate Bill 229.The design provides overland flow that promotes infiltration and treatment of stormwater runoff from the built upon areas into grassed buffers, shoulders, and grassed swales to the maximum extent practical. No built upon areas are directly connected to the pipe system.The natural flow paths and outfalls of the project are preserved in the proposed design.The proposed project utilizes several Best Management Practices (BMPs) identified in Chapter 13 for Airports in the DENR BMP manual.Those BMP's are: Disconnected Impervious Area/Overland Flow » Open Grassed Swales 1,2.1 Disconnected Impervious Area/Overland Flow FAA grading criteria governs the width and slope of the areas immediately adjacent to runways,taxiways and aprons. These areas, known as shoulders and safety areas,are relatively flat(less than 3%) and in most cases wider than the area flowing to them. This BMP is utilized for stormwater runoff from the BUA associated with the proposed pavement. Research has shown that the majority of the pollutant removal occurs in the first 8 feet of overland flow. Maintenance of this area consists of routine maintenance and preservation of the stand of grass. 1.2.2 Open Grassed Swales This BMP has been utilized to the maximum extent possible within the project area. Grassed swales have been shown to be effective at removing pollutants and suspended solids from average storm events. This BMP has been utilized off the edge of the proposed hold bay. Maintenance of these features consists of routine mowing and removal of trash and other debris. 1.3 CONCLUSION The proposed Taxiway A Rehabilitation project is revising State Stormwater Management Permit No. SW8 931005 by adding 1.46 acres of BUA.The proposed project complies with the requirements of Session Law 2012-200, Senate Bill 229,which allows for the proposed activities to be deemed permitted. Cns!ow County Permit Modification Albert J. 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I i Il i ' '1 ii a• 1 : I it } • 1 III I . , , , ti , : i , 1 ,I'l 1 \ / ;,, ii it ., 4aawaaaaa.aaa-am_a:-a-s.a imp a I 70• +� :ra $ .. 1 a . i I � a� a LLk_:' t • Weaver, Cameron From: Mueffelmann,Chris <Chris.Mueffelmann@rsandh.com> Sent: Tuesday,July 13, 2021 4:52 PM To: Weaver, Cameron Subject: RE: [External] Albert J. Ellis Airport Taxiway A Rehabilitation Express Permitting Attachments: OAJ TW A Express Permits Request.pdf CAUTION: External email. Do not dick links or open attachments unless you verify. Send all suspicious email as an attachment to REEJCWc jam. Cameron, Perfect, thanks for pointing that out! Please see the attached for our revised submission. Thanks: Chris Chris Mueffelmann Aviator.Associate 8521 Six Forks Rd, Suite 400, Raleigh, NC 27615 919-925-4123 Chris.Mueffelmann@rsandh.com rsandh.com j Facebook I Twitter I Linkedln j Blog Stay up-to-date with our latest news and insights insH From: Weaver, Cameron<cameron.weaver@ncdenr.gov> Sent:Tuesday,July 13,2021 13:08 To: Mueffelmann, Chris<Chris.Mueffelmann@rsandh.com> Subject: RE: [External]Albert J. Ellis Airport Taxiway A Rehabilitation Express Permitting The form you submitted has spots for other Express Permitting options,and Erosion Control is the bottom side box before the Wetlands information on the form. Complete that portion and resubmit an expanded narrative so that I can get both permit applications in our queue. Cameron Weaver Environmental Assistance Coordinator DEACS-DEQ Wilmington Regional Office 127 Cardinal Drive Wilmington NC 28405 tameron.Weaver@ncdenr.gov Direct: 910-796-7265 1 DEQ: 910-796-7215 From: Mueffelmann,Chris<Chris.Mueffe!mann@rsandh.com> Sent:Tuesday,July 13, 2021 12:54 PM To:Weaver,Cameron <cameron.weaver@ncdenr.gov> Subject: [External]Albert J. Ellis Airport Taxiway A Rehabilitation Express Permitting I ICAUTION: External email. Do not dick links or open attachments unless you verify.Send all suspicious email as an attachment to Report Spam. Good afternoon Cameron, I'd like to schedule two express permitting meetings for our upcoming pavement rehabilitation project at OAJ airport. One meeting for the express review of our erosion and sedimentation control permit and one meeting for a major modification to our low density stormwater permit. I've attached the Express Permit Request for the stormwater permit here, however, I'm not seeing a similar form for the erosion control review. Am I overlooking a document, or is there a different process for that permit? Thanks, Chris Chris Mueffeimann Av aton Associate 8521 Six Forks Rd, Suite 400, Raleigh, NC 27613 919-926-4123 Chris.Mueffelmann@rsandh.com rsandh.com I Facebook I Twitter I Linkedln Blog Stay up-to-date with our latest news and insights. RSitl Taxiway A Rehabilitation at Ellis Airport Express Request Norris, Kellie E <kellie.norris@ncdenr.gov> Tue 7/27/2021 2:38 PSI To: tom.slater@rsandh.com <tom.slater@rsandh.com>; chris_white@onslowcountync.gov<chris_white@onslowcountync_gov> Cc: Hall,Christine <Christine.Hall@ncdenr.gov>;Weaver,Cameron <cameron.weaver@ncdenr.gov> Mr. Slater- I have reviewed the express request for the subject project. The request was submitted as a major modification. This permit modification would actually only be a minor modification. The fee for this is$1,000. Also at the time of the submittal at the express meeting, please provide an overall sitemap. Please let me know if you have any questions. Thank you- Ke.LG.e 13e1-1A, Norri s, EIT Environmental Engineer NC Division of Energy, Mineral and Land Resources Stormwater Permitting 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Phone: 910.796.7345 J E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. • chri s I�Jhi�'G • P4 4-ch Sp r a ti l clEr non- SA • • no j�(e -1 n S cdc�v hd ai n9 1oa l ) acce36 roaj C (009 4 C,(v 1 p —• 5 -1 h+ Show 5u.A bei o'` c)Ae.3 • 5 - C �bo 1.4.4- 1.t j,o W n .� rcl • PAO ` f� �� 7 1• 7'r P jiCt� , Figae 4 aed 24fe/ • G301 - dui I of 4/ale • kleec s check • 2" 5c4- of -cull Plans • or i3 i nil Siena-kLre-. a S(/tY��►G G Inlil'�'cr r1� \ a,i w"1 of Si 4 . Cf1 ure- 4- • col � 9 '� ift.t.t1 SiZcS . Permit Number: (to be provided by DWQ) Drainage Area Number: Filter Strip, Restored Riparian Buffer and Level Spreader Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected,repaired or replaced immediately. These deficiencies can affect the integrity of structures,safety of the public,and the removal efficiency of the BMP. Important maintenance procedures: - Immediately after the filter strip is established,any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). - Once a year,the filter strip will be reseeded to maintain a dense growth of vegetation - Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. - Two to three times a year,grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum pollutant removal efficiency.Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC,1993).Forested filter strips do not require this type of maintenance. - Once a year,the soil will be aerated if necessary. - Once a year,soil pH will be tested and lime will be added if necessary. After the filter strip is established,it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch(or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potential problem: How I will remediate the problem: The entire filter strip Trash/debris is present. Remove the trash/debris. system The flow splitter device The flow splitter device is Unclog the conveyance and dispose (if applicable) clogged. of any sediment off-site. The flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for repair. flECEIVE JAN022013 BY: Form SW11401-Level Spreader,Filter Strip,Restored Riparian Buffer O&M-Rev.3 Page 1 of 3 BMP element Potential problem: How I will remediate the problem: The swale and the level The swale is clogged with Remove the sediment and dispose lip sediment of it off-site. The level lip is cracked, Repair or replace lip. settled,undercut,eroded or otherwise damaged. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip,and shows stormwater has then plant a ground cover and bypassed it water until it is established. Provide lime and a one-time fertilizer application. Trees or shrubs have begun Remove them. to grow on the swale or just downslope of the level lip. The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully,and then reestablish proper erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed(enlarge if downhill. necessary). After this,reestablish the erosion control material. The filter strip Grass is too short or too long Maintain grass at a height of (if applicable). approximately three to six inches. Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully,and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer application. Plants are desiccated. Provide additional irrigation and fertilizer as needed. Plants are dead,diseased or Determine the source of the dying. problem: soils,hydrology,disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. If pesticide is used,do not allow it to get into the receiving water. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality local Regional Office,or the outlet. 401 Oversight Unit at 919-733 a78C. JA,r O> p Form SWTJ401-Level Spreader,Filter Strip,Restored Riparian Buffer O&M-Re . ►�f BY• Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name:Albert J Ellis Airport Stormwater Management BMP drainage area number: Print name:Christopher White Title:Airport Director Address:264 Ellis Airport Road Richlands,NC 28574 Phone:(910) 989-3162 Signature: L� Date: 0-121 Itz Note: The legally responsible party should not be a homeowners association unless more than 50%of the lots have been sold and a resident of the subdivision has been named the president. I, ✓ 00(41A I C Jeitn , a Notary Public for the State of ()c)e \ b4AtUnk , County of bn'l b'J) , do hereby certify that Ch T\W v5N14 personally appeared before me this 21*) day of DaLlnntPf , 24-50'•, and acknowledge the due execution of the forgoing filter strip,riparian buffer, and/or level spreader maintenance requirements. Witness my hand and official seal, 61/111/44k (6/Aff4f4f --J SANDRAJ.JANSSEN ► 4 NOTARY PUBLIC ► ONSLOW COUNTY ► STATE OF NORTH CAROLINA ► ' MY COMMISSION EXPIRES 5-17-2014 SEAL (*). My commission expires Mt, 11 r v' J AH 0? 2013 Form SWU401-Level Spreader,Filter Strip,Restored Riparian Buffer O&M-Rev.3 Page 3 of 3 a Permit Name: (to be provided by DWQ) Drainage Area Number: Grassed Swale Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected,repaired or replaced immediately. These deficiencies can affect the integrity of structures,safety of the public,and the removal efficiency of the BMP. Important maintenance procedures: — The drainage area of the grassed swale will be carefully managed to reduce the sediment load to the grassed swale. — After the first-time fertilization to establish the grass in the swale,fertilizer will not be applied to the grassed swale. The grassed swale will be inspected once a quarter. Records of operation and maintenance will be kept in a known set location and will be available upon request Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potential problem: How I will remediate the problem: The entire length of the Trash/debris is present. Remove the trash/debris. swale Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully,and then re-sod (or plant with other appropriate species)and water until established. Provide lime and a one-time fertilizer application. Sediment covers the grass at Remove sediment and dispose in an the bottom of the swale. area that will not impact streams or BMPs. Re-sod if necessary. Vegetation is too short or too Maintain vegetation at a height of long. approximately six inches. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919- outlet. 733-1786. flECEIVE JAN022013 BY: Form SW401-Grassed Swale O&M-Rev.3 Rage 1 of 2 Permit (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name:Albert J Ellis Airport Stormwater Management BMP drainage area number: Print name:Christopher White Title:Airport Director Address:264 Ellis Airport Road Richlands,NC 28574 Phone:(910) 989-3162 Signature: Date: 11-1211t7i Note: The legally responsible party should not be a homeowners association unless more than 50%of the lots have been sold and a resident of the subdivision has been named the president. I, 60L 1(1d0 �.1 1 � e/r) , a Notary Public for the State of f\bv#\ MOVI (1l ' ,,`County of �In44OW , do hereby certify that r� { VI`jb � L lr personally appeared before me this 21`'�,� I day of 'l3.C.t-NOS/ , 2'0�d') and acknowledge the due execution of the forgoing grassed swale maintenance requirements. Witness my hand and official seal, $/vvtaiyA 4 SANDRA J.JANSSEN NOTARY PUBLIC ONSLOW COUNTY 4 STATE OF NORTH CAROLINA 4 MY COMMISSION EXPIRES 5-17-2014 SEAL My commission expires ntki f 1)\O` 110 BY: ?413 Form SW401-Grassed Swale O&M-Rev.3 Page 2 of 2 IVEViTigMr7s Albert J. Ellis Airport giOCT 2 2 1993 j Stormwater Project No. 931005 Engineer/Designer/Owner Certification main A. Riley, P.A. , having been authorized to observe (periodically/weekly/full time) the construction of the project, Albert J. Ellis Airport Perimeter Road, Apron Repair and Airfield Signage (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. A copy of the recorded Deed Restrictions is attached as required and further confirms that the project, as constructed, does meet the requirements of the North Carolina Stormwater Rules. Signature _fi* /1 Date �o// / STORM WAT Lbj OCT 2 2 1993 -,� f_ g31005