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HomeMy WebLinkAboutSW6080801_CURRENT PERMIT_20080806STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW oO�U�D� DOC TYPE CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD State Stormwater Permit Permit No. SW6080801 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH 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 Trustees of Solid Rock United Methodist Church Solid Rock United Methodist Church NC Highway 24, Cameron, North Carolina, Harnett County FOR THE construction, operation and maintenance of 6 bioretention basin(s) in compliance with the provisions of Session Law 2006-246 and 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until August 5, 2018, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.7 of this permit. 3. The tract will be limited to the amount of built -upon area as indicated in Section 1.7 of this permit, and per the application documents and as shown on the approved plans. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. 6. The built -upon areas associated with this project shall be located at least 30 feet landward of all perennial and intermittent surface waters. Page 1 of 6 State Stormwater Permit Permit No. SW6080801 The following design criteria have been provided in the bioretention basin and must be maintained at design condition: Cell Cell Cell Cell Cell Cell a. Drainage Area, acres: 0.525 0.146 0.112 2.089 0.308 0.321 Onsite, ft2: 22,855 6,340 4,892 91,017 13,419180,949 Offsite, ft2: 0 0 0 0 0 0 b. Total Impervious Surfaces, ft2: 15,067 4,204 3,895 68,877 8,593 11,590 Onsite, ft2: 15,067 4,204 3,895 68,877 8,593 11,590 Offsite, ft2: 0 0 0 0 0 0 c. Design Storm, inches: 1.0 1.0 1.0 1.0 1.0 1.0 d. Max. Ponded Depth, feet: 0.75 0.75 0.75 0.83 0.75 0.75 e. Seasonal High Water Table, fmsl: 357.0 357.0 357.0 357.0 357.0 357.0 f. Planting Media Depth, feet: 3 3 3 3 3 3 g. Basin Dimensions (approximate), feet: 55x33 21x26 25x20 41x200 41x26 46x30 h. Bottom Elevation, fmsl: 372.0 370:7 370.15 370.0 371.69 372 i. Surface Area, ft2: 1,828 559 513 7,187 1,081 1,404 j. Permitted Storage Volume, ft3: 1,225 343 311 5,544 700 927 I. Predevelopment 1 year 24 hour W/sec: 0.15 0.00 0.00 0.05 0.01 0.01 M. Post development 1 year 24 hour ft3lsec: 0.62 0.01 0.01 0.19 0.03 0.03 n. Drawdown Time, hours: 12 12 12 12 12 12 o. Underdrain Diameter, inches: 4 4 4 4 4 4 p. Receiving Stream/River Basin: Muddy Creek/Cape Fear q. Stream Index Number: 18-23-26 r. Classification of Water Body: Class C II. SCHEDULE OF COMPLIANCE The permittee shall at all time provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. G. Mowing and re -vegetation of slopes and the filter strip. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans. f. Debris removal and unclogging of all drainage structures, level spreader, filter media, planting media, underdrains, catch basins and piping. g. Access to the basin and outlet structure must be available at all times. Records of maintenance activities must be kept for each permitted BMP. The reports will indicate the date, activity, name of person performing the work and what actions were taken. 3. The permittee shall maintain on site an annual summary report of the maintenance and inspection records for each BMP. The report shall summarize the inspection dates, results of the inspections, and the maintenance work performed at each inspection. 4. The facilities shall be constructed as shown on the approved plans. This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. Page 2 of 6 State Stormwater Permit Permit No. SW6080801 5. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 6. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 7. Access to the stormwater facilities shall be maintained via appropriate recorded easements at all times. 8. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 11. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. 12. 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. III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a completed Name/Ownership Change form signed by both parties, to the Division of Water Quality, accompanied by the supporting documentation as listed on page 2 of the form. The approval of this request will be considered on its merits and may or may not be approved. 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves a request to transfer the permit. 3. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. Page 3 of 6 State Stormwater Permit Permit No. SW6080801 . 4. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction. 5. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 6. The permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 7. The permit issued shall continue in force and effect until revoked or terminated. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and re -issuance or termination does not stay any permit condition. 8. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 9. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 10. 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 as allowed by the laws, rules and regulations contained in Session Law 2006- 246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al. 11. The permittee shall notify the Division in writing of any name, ownership or mailing address changes at least 30 days prior to making such changes. Permit issued this the 6th day of August, 2008. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Jor ween H. Sullins, uirector Division of Water Quality By Authority of the Environmental Management Commission 7 Page 4 of 6 USEONLY0'ai ! Date Received Fee Paid Permit Number ice---� State of North Carolina Department of Environment and Natural Resources $EP 4 2008 Division of Water Quality I OENB-FtTE LLEREGIONALOFRCE STORMWATER MANAGEMENT PERMIT APPLICATION FORM This farm may be photocopied for use as an original I. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): Trustees of Solid Rock United Methodist Church 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Gilliam P. Wise, Lead Pastor 3. Mailing Address for person listed in item 2 above: 2297 Hwv. 24 City: Cameron State: NC Zip: 28326 Phone: (919 ) 498-2139 Fax: Email: 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Solid Rock United Methodist Church Capital Campaign Church/Community Campus, Phase 1 5. Location of Project (street address): NC Highway 24 City: Cameron County: Harnett - Zip:28326 6. Directions to project (from nearest major intersection): From NC 87 - NC 24 interchange, 6.7 miles north of Cumberland County line, west on NC 24 for 2000 feet r 7. Latitude:35° 16' 04" N Longitude:79° 04' 01" W 8. Contact person who can answer questions about the project: of project Name: C. Tyrus Clayton, Jr., PE Telephone Number: (910 ) 897-7070 Email: tyrus@ctclayton.com II. PERMIT INFORMATION: Form SWU-101 Version03.27.08 Pagelof4 1. Specify whether project is (check one): ®New Renewal Modification 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit number and its issue date (if known) 3. Specify the type of project (check one): []Low Density ®High Density DRedevelop OGeneral Permit []Universal SMP Other 4. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): []CAMA Major ®Sedimentation/Erosion Control []404/401 Permit []NPDES Stormwater III. PROJECT INFORMATION 1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative (one to two pages) describing stormwater management for the project. Most of the stormwater will be directed into six bioretention cells, which will treat the first inch of runoff. Runoff in excess of that amount will be conveyed by a system of pipes to a distribution box and then to 3 level spreaders with grassed filter strips. A small quantity of stormwater will leave the site as sheet flow to the north and south. 2. Stormwater runoff from this project drains to the Cape Fear River basin. 3. Total Property Area:16.16 acres 4. Total Wetlands Area: 0 acres 5. 100' Wide Strip of Wetland Area: N/A acres (not applicable if no wetlands exist on site) 6. Total Project Area': 6.655 acres 7. Project Built Upon Area: 38.4 8. How many drainage areas does the project have? 7 9. Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. For high density projects, complete the table with one drainage area for each engineered stormwater device. Basm1Inf6rmation �3tx.. is}LOLVA'.IDL!.x!vt5 y aa..� " rvw�t.��. Vrainage}Area=1 `X e.i4a:: fNa..'1M§ p vmage «ai - Dramage3Area=2 ��A�.Wv aibti NGF6 �S.W x. Receiving Stream Name Muddy Creek Muddy Creek Stream Class & Index No. C;18-23-26 C;18-23-26 Total Drainage Area (sf) 22,855 6,340 On -site Drainage Area (sf) 22,855 6,340 Off -site Drainage Area (so 0 0 Existing Impervious" Area (sf) 0 0 Proposed Impervious"Area (sf) 15,067 4,204 Impervious" Area (total) 65.9 66.3 *� ' ImperyrousSurfaceArea ,; " Dra�n'a e"Area l y g a u F�Drama e",Area 2 $ On -site Buildings (so 12,363 0 On -site Streets (so 0 0 On -site Parking (sf) 2,704 4,204 On -site Sidewalks (so 0 0 Other on -site (sf) 0 0 Off -site (sf) 0 0 Total (so: 15,067 4,204 Form SWU-101 Version 03.27.08 Page 2 of Solid Rock United Methodist Church Capital Campaign Church/Community Campus, Phase 1 Stormwater Management Permit Drainage Areas 3-6 Basin Information Drainage Area Drainage Drainage Area Drainage Area Drainage Area 3 Area 4 5 6 7 Receiving Stream Muddy Creek Muddy Creek Muddy Creek Muddy Creek Muddy Creek Name Stream Class & Index C;18-23-26 C;18-23-26 C;18-23-26 C;18-23-26 C;18-23-26 No. Total Drainage Area 4,892 91,017 13,419 13,987 180,949 s On -site Drainage Area 4,892 91,017 13,419 13,987 180,949 s Off -site Drainage Area 0 0 0 0 0 s Existing Impervious 0 0 0 0 0 Area (sf) Proposed Impervious 3,895 68,877 8,593 11,590 15,770 Area so % Impervious Area 79.6 75.7 64.0 82.9 8.7 (total) Impervious Surface Area Drainage Area 3 Drainage Area 4 Drainage Area 5 Drainage Area 6 Drainage Area 7 On -site Buildings (so 0 2,918 0 11,590 0 On -site Streets (so 0 0 0 0 0 On -site Parking (so 3,895 62,589 8,593 0 13,905 On -site Sidewalks (so 0 3,370 0 0 1,865 Other on -site (so 0 0 0 0 0 Off -site (so 0 0 0 0 0 Total (so 3,895 68,877 8,593 11,590 15,770 "Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. "Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area percentage calculation. This is the area used to calculate percent project built upon area (BUA). 10. How was the off -site impervious area listed above derived? IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS One of the following deed restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment. Forms can be downloaded from http://h2o.enr.state.nc.us/su/bmp forms.htm - deed restrictions. Form DRPC-1 High Density Commercial Subdivisions Form DRPC-2 High Density Developments with Outparcels Form DRPC-3 High Density Residential Subdivisions Form DRPC-4 Low Density Commercial Subdivisions Form DRPC-5 Low Density Residential Subdivisions Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required in the above form, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be subn-tted for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms. Forms can be downloaded from htro://h2o.enr.state.nc.us/su/bmp forms.htm. Form SW401-Low Density Form SW401-Curb Outlet System Form SW401-Off-Site System Form SW401-Wet Detention Basin Form SW401-Infiltration Basin Form SW401-Infiltration Trench Form SW401-Bioretention Cell Form SW401-Level Spreader Form SW401-Wetland Form SW401-Grassed Swale Form SW401-Sand Filter Form SW401-Permeable Pavement Low Density Supplement Curb Outlet System Supplement Off -Site System Supplement Wet Detention Basin Supplement Infiltration Basin Supplement Underground Infiltration Trench Supplement Bioretention Cell Supplement Level Spreader/Filter Strip/Restored Riparian Buffer Supplement Constructed Wetland Supplement Grassed Swale Supplement Sand Filter Supplement Permeable Pavement Supplement Form SWU-101 Version 03.27.08 Page 3 of 4 VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. The complete application package should be submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the interactive online map at http://h2o.enr.state.nc.us/su/msi_mans.htm) 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. Initials • Original and one copy of the Stormwater Management Permit Application Form 0_1e • Original and one copy of the Deed Restrictions & Protective Covenants Form (if AIIA required as per Part IV above) • Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP V • Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD) payable to NCDENR C -It^ • Calculations & detailed narrative description of stormwater treatment/management Ll'l • Copy of any applicable soils report L� • Two copies of plans and specifications (sealed, signed & dated), including: Cle - Development/Project name - Engineer and firm -Legend - North arrow - Scale - Revision number & date - Mean high water line - Dimensioned property/project boundary - Location map with named streets or NCSR numbers - Original contours, proposed contours, spot elevations, finished floor elevations - Details of roads, drainage features, collection systems, and stormwater control measures - Wetlands delineated, or a note on plans that none exist - Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage areas delineated - Vegetated buffers (where required) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may.provide information on your behalf, please complete this section. (ex. designing engineer or firm) Designated agent (individual or firm): C. Mailing Address: PO Box 578 City: Coats Phone: (910 ) 897-7070 Email: VIII. APPLICANT'S CERTIFICATION P.E. State: NC Zip:27521 Fax: (910 ) 897-6767 I, (print or hype name of person listed in General Information, item 2) Gl I I ,a n P. (0150-, certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions Form SWU-101 Version 03.27.08 Page 5 of 4 and protective cove is will be recorded, and that the proposed project complies with the requirements of 15A NCAC 2171 .1000. 'J Signature: Date: / �s Form SWU-101 Version 03.27.08 Page 6 of Permit Number: (to be provided by DWQ) Drainage Area Number: Bioretention 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 operation and maintenance procedures: — Immediately after the bioretention cell is established, the plants will be watered twice weekly if needed until the plants become established (commonly six weeks). — Snow, mulch or any other material will NEVER be piled on the surface of the bioretention cell. — Heavy equipment will NEVER be driven over the bioretention cell. — Special care will betaken to prevent sediment from entering the bioretention cell. — Once a year, a soil test of the soil media will be conducted. After the bioretention cell is established, I will inspect it once a month and within 24 hours after every storm event greater than 1.0 inches (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: Potentialproblems: How I will remediate theproblem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to bioretention cell 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. The inlet device: pipe, The pipe is clogged (if Unclog the pipe. Dispose of the stone verge or swale applicable). sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged (if applicable). Erosion is occurring in the Regrade the swale if necessary to swale (if applicable). smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. Stone verge is clogged or Remove sediment and clogged covered in sediment (if stone and replace with clean stone. applicable). Form SW401-Bioretention O&M-Rev.3 Page 1 of 5 BMP element: The pretreatment area The bioretention cell: vegetation The bioretention cell: soils and mulch Potential problems: Flow is bypassing pretreatment area and/or gullies have formed. Sediment has accumulated to a depth greater than three inches. Erosion has occurred. Weeds are present. Best professional practices show that pruning is needed to maintain optimal plant health. Plants are dead, diseased or dying. Tree stakes/wires are present six months after planting. Mulch is breaking down or has floated away. Soils and/or mulch are clogged with sediment. An annual soil test shows tith pH has dropped or heavy metals have accumulated in the soil media. will remediate the Regrade if necessary to route all flow to the pretreatment area. Restabilize the area after grading. Search for the source of the sediment and remedy the problem if possible. Remove the sediment and restabilize the pretreatment area. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Remove the weeds, preferably by hand. Prune according to best professional practices. Determine the source of the problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Remove tree stake/wires (which can kill the tree if not removed). Spot mulch if there are only random void areas. Replace whole mulch layer if necessary. Remove the remaining much and replace with triple shredded hard wood mulch at a maximum depth of three inches. Determine the extent of the clogging - remove and replace either just the top layers or the entire media as needed. Dispose of the spoil in an appropriate off -site location. Use triple shredded hard wood mulch at a maximum depth of three inches. Search for the source of the sediment and remedy the problem if Dolomitic lime shall be applied as recommended per the soil test and toxic soils shall be removed, disposed of properly and replaced with new planting media. Form SW40 1 -Bioretention O&M-Rev.3 Page 2 of 5 BMP element: Potentialproblems: How I will remediate theproblem: The underdrain system Clogging has occurred. Wash out the underdrain system. if applicable) The drop inlet Clogging has occurred. Clean out the drop inlet. Dispose of the sediment off -site. The drop inlet is damaged Repair or replace the drop inlet. 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. Form SW401-Bioretention O&M-Rev.3 Page 3 of 5 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: Solid Rock United Methodist Church Capital Campaign Church/Community Campus, Phase 1 BMP drainage area number: Bioretention #1 (DAl), Bioretention #2 (DA2), Bioreten- tion 43 (DA3), Bioretention #4 (DA4), Bioretention #5 (DA5), Bioretention 46 (DA6) Print name: Gilliam P. Wise Title: Lead Pastor Address: 2297 Hwy. 24, Cameron, NC 28326 Date: 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_ a.o,_. F a , a Notary Public for the State of (�N C , County of lapxne�A do hereby certify that CT W1 S e personally appeared before me this 1 rJ day of 5k.1 i 2oo b , and acknowledge the due execution of the forgoing bioretention maintenance requirements. Witness my hand and official seal, ecoPF, ]ONNSD.�i S+Q �p'CARy ci ! s y Puev =i �`•y�T COS �•� w'rse.I Mpa SEAL My commission expires Ok i 3k i aDj3 Form SW401-Bioretention I&M-Rev. 2 Page 4 of 5 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: Potentialproblem: How I will remediate theproblem: 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. Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 1 of 4 BMP element: Potentialproblem: How I will remediate theproblem: 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 downslo e 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 f a licable . 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 919-733-1786. Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 2 of 4 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: Solid Rock United Methodist Church Capital Campaign Church/Community Campus, Phase 1 BMP drainage area number: Level Spreader 41, Level Spreader 42, Level Spreader 43 Print name: Gilliam P. Wise Address: 2297 Hwy. 24, Cameron, NC 28326 r,O,: Signat Date: �% n 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, WO MD o— F , a Notary Public for the State of MC_ ounty of �rne N- , do hereby certify that W. Se- personally appeared before me this 16''-' day of emu.\ q 00 8 and acknowledge the due execution of the forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements Witness my hand and official seal, NM.........F. e�p�oPp. ]OyNsy�+ D ea3� p'TARy i d SEAL My commission expires CD\1 "3 � 1 Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 3 of 4 Permit Number: (to be provided by DWQ) Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 4 of 4 fiAtitA36 NCDENR Permit Number: (to be provided by DWQ) O�O� WATF,q y C > y O T STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. Project name Contact name Phone number Date Drainage area number Site Characteristics Drainage area Impervious area Percent impervious Design rainfall depth Peak Flow Calculations 1-yr, 24-hr runoff depth 1-yr, 24-hr intensity Pre -development 1-yr. 24-hr peak flow Post -development 1-yr, 24-hr peak flow Pre/Post 1-yr, 24-hr peak control Storage Volume: Non -SR Waters Design volume Storage Volume: SR Waters Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr runoff Minimum volume required Volume provided Cell Dimensions Ponding depth of water Ponding depth of water Surface area of the top of the bioretention cell Length: Width: -or- Radius Soils Report Summary Drawdown time, ponded volume Drawdown time, to 24 inches below surface Drawdown time, total: In-sdu soil: Soil permeability Planting media soil: Soil permeability Soil composition % Sand (by weight) % Fines (by weight) % Organic (by weight) ,Solid Rock United Methodist Church Capital Campaign Church/Community Campus, Phase 1 ; w; .C.,,Tyrus.Clayton, Jr., P E 910 897-7070 `June 6 2008 �x=;k'x2 .,� , ! ° o . t ;'�cs-.., 22,855.00 It, 15,038.00 ftZ 65.8% % 1.00 inch l ; ..• ;3.06 in 0.12 in/hr .0.15 ft3/sec > 0.62 ft3/sec 0.46 ft3/sec 1,223.00 ft3 ft3 " ft3 0.00 ft3 ft3 " ;9.00inches OK 0.75 ft 1825.00 ft2 OK 55.30 ft OK 33.00 It OK ft 12-.0'0 hr OK 12.00 hr OK 24.00 hr 0.60 in/hr OK 1.50 in/hr OK 86% OK 10% OK 4% OK Total: 100% Fn.m FIAIde1-Rinrolunlinn_Pu„ A Padc I and II nation S,mmary Pana 1 n/ 9 Permit Number: (to be provided by DW ) Phosphorus Index (P-Index) 20 (unitless) OK Basin Elevations Temporary pool elevation 375.75 fmsl Planting elevation (top of the mulch) 375.00 fmsl OK Bottom of the cell 372.00 fmsl Planting depth 3.00 ft Depth of mulch 3.00 inches OK SHWi elevation 357,00 fmsl OK Are underdrains being installed? Y '4• (Y or N) How many clean out pipes are being installed? ", 7 OK What factor of safety is used for sizing the underdrains? (See 6.00 OK BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and 1 ft the bottom of the cell to account for underdrains Bottom of the cell required 371.00 fmsl Distance from bottom to SHWT 14.00 ft OK Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? ' , (Y or N) Is this a cell with trees/shrubs? -, Y #s'( (Y or N) OK media depth Planting Plan Number of tree species 3 OK Number of shrub species i,+x ; r3'r>ss°:-3 OK Number of herbaceous groundcover species jt t w *rr 3 OK Additional Information Does volume in excess of the design volume bypass the k hw a' bioretention cell? Y or N ) OK Does volume in excess of the design volume flow evenly distributed KkY N) OK through a vegetated filter? (Y or What is the length of the vegetated filter? ,:„:V: x -: *: 30 ft Does the design use a level spreader to evenly distribute flow? z' 'W q.0,I(Y or N) Submit a level spreader supplement. Is the BMP located at least 30 feet from surface waters (50 feel If r' „ Y A (Y or N) OK SA waters)? s Is the BMP localed at least 100 feet from water supply wells? Y <y ^ I (Y or N) OK Are the vegetated side slopes equal to or less than 3:17 as Y A; - (Y or N) OK Is the BMP located in a recorded drainage easement with a NIA (Y or N) Insufficient ROW location, recorded access easement to a public Right of Way (ROW)?rr� , Inlet velocity (from treatment system) i+ 100 ft/sec OK Is the area surrounding the cell likely to undergo development in N N OK the future? or (Y ) Are the slopes draining to the bioretention cell greater than 20%? z N r,'! r (Y or N) OK Is the drainage area permanently stabilized? �Y."'-: (Y or N) OK Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass s Y (flinches gravel followed by 3-5 ft of grass) Grassed swale Forebay R,rm AVVAM-Rlnretentinn-Ray.3 Parts I and 11. Desion Summary. Paoe 2 of 2 Permit Number: (to be provided by DWO) ��of wAiF,gOG ®� j NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information. Project name Solid Rock United Methodist Church Capital Campaign Church/Community Campus, Phase 1 Contact name .C. Tyrus,Clayton, Jr., RE. Phone number (910) 897-7070 Date June 6,2008Drainage area area number 2 "A Site Characteristics Drainage area '',"6,339.00 ft Impervious area 4,221.00 ftZ Percent impervious 66.6% % Design rainfall depth ds^_ a 1.00 inch Peak Flow Calculations 1-yr, 24-hr runoff depth - �, 3.06 in 1-yr, 24-hr intensity ".412 Whir Pre -development 1-yr, 24-hr peak flow w;,0.00 ft3lsec Post -development 1-yr, 24-hr peak flow ' '' "'?0.01 ft3/sec Pre/Post 1-yr, 24-hr peak control 0.01 ft3/sec Storage Volume: Non -SR Waters Design volume 343.00 ft3 Storage Volume: SR Waters Pre -development 1-yr, 24-hr runoff r'- `ft3 Post -development 1-yr, 24-hr runoff "'<-; ft3 Minimum volume required 0.00 ft3 Volume provided , `'Ii`ft3 Cell Dimensions Ponding depth of water (9.00 inches OK Ponding depth of water 0.75 ft Surface area of the top of the bioretention cell W " "559.00 ft' OK Length:-:+="".. ; .21.00ft OK Width: " 26.60 ft OK -or- Radius "a 8 Soils Report Summary Drawdown time, ponded volume ):r 5=i. r_...12.00 hr OK Drawdown time, to 24 inches below surface 12.00 hr OK Drawdown time, total: 24.00 hr In -situ soil: Soil permeability 0.60 in/hr OK Planting media soil: Soil permeability 1.50 inthr OK Soil composition % Sand (by weight) 86% OK % Fines (by weight) 10% OK % Organic (by weight) 4% OK Total: 100% Fnrm AWe01-Rinrntentinn-Ray.3 Parts I and II. Design Summary. Paoe 1 of 2 Permit Number: (to be provided by DWQ) Phosphorus Index (P-Index) Basin Elevations Temporary pool elevation Planting elevation (top of the mulch) Bottom of the cell Planting depth Depth of mulch SHWT elevation Are underdrains being installed? How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required Distance from bottom to SHWT Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the bioretention cell? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flan? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP located at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a recorded drainage easement with a recorded access easement to a public Right of Way (ROW)? Inlet velocity (from treatment system) 20 (unitless) OK 374.45 fmsl fmsl OK 33730 7fmsl 3.00 It 3.00 inches OK ' 357.00 fmsl OK Y (Y or N) 2 OK 6.00 OK 1ft 369.70 fmsl 12.70 ft OK (YorN) Y (Y or N) OK media depth C- r3 OK ilk: °;t;r3 OK (Y or N) OK (YorN) OK It (Y or N) Submit a level spreader supplement. (Y or N) OK (Y or N) OK (Y or N) OK or N) Insufficient ROW location. OK Is the area surrounding the cell likely to undergo development In r+r a OK the future? ,Nr` ,u(YorN) Are the slopes draining to the bioretention cell greater than 20%7' N a (Y or N) OK Is the drainage area permanently stabilized? ''"Y • : (Y or N) OK 'Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (8 inches gravel followed by 3-5 It of grass) Grassed swale Forebay Y Form SW401-Bioretention-Rev.3 Parts I and II. Desiqn Summary. Page 2 of 2 Permit A'A NCDENR (to be provided by DWQ) o2Dp W A7- qO y � � r o -mac STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part Ill) must be printed, filled out and submitted along with all of the required information. Project name :Solid Rock United Methodist Church Capital Campaign Cl Contact name C Tyrus Clayton, Jr., P.E. ` Phone number (910) 897-7070 Date June.6, 2008 Drainage area number 3m- Site Characteristics Drainage area '1 4 89L�00 ft2 Impervious area Y :' 3,791 `OO ftZ Percent impervious 77.5% % Design rainfall depth 3:,", `."1.00 inch Peak Flow Calculations 1-yr, 24-hr runoff depth s ea'nU3.06 in 1-yr, 24-hr intensity '' 0"12 in/hr Pre -development 1-yr, 24-hr peak flow _ ' ` {0,00 ft3/sec Post -development 1-yr, 24-hr peak Flow `- 0.01 ft3/sec Pre/Post 1-yr, 24-hr peak control 0.01 ft3/sec Storage Volume: Non -SR Waters Design volume g-s 305.00 ft3 Storage Volume: SR Waters Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr runoff; a,:ft3 Minimum volume required 0.00 ft3 Volume provided :%. +. ' ft3 Cell Dimensions Ponding depth of water f C 9.00 inches OK Ponding depth of water 0.75 ft Surface area of the top of the bioretention cell k s503.00 ft' OK Length: P:25.15 ft OK Width: .'„`: - ' 20.00 ft OK or -Radius >. ' ft Soils Report Summary Drawdown time, ponded volume F 12.00 hr OK Drawdown time, to 24 inches below surface ;vr `° 12.00 hr OK Drawdown time, total: 24.00 hr In-s8u soil. Soil permeability 0.60 in/hr OK Planting media soil. - Soil permeability 1.50 in/hr OK Soil composition % Sand (by weight) 86% OK • Fines (by weight) 10% OK % Organic (by weight) 4% OK Total: 100% Form SW401-Bioretention-Rev.3 Parts I and II. Desion Summary, Pane 1 of 2 Permit (to be provided by D WQ) Phosphorus Index (P-Index) Basin Elevations Temporary pool elevation Planting elevation (top of the mulch) Bottom of the cell Planting depth Depth of mulch SHWT elevation Are underdrains being installed? How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required Distance from bottom to SHWT Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the bioretention cell? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP located at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a recorded drainage easement with a recorded access easement to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (8'inches gravel followed by 3-5 ft of grass) Grassed swale Forebay 20 (unilless) OK 373.90 fmsl 373.15 fmsl OK 370.15 fmsl 3.00 ft 3.00 inches OK 357.00 fmsl OK Y _ (YorN) 2 OK N 6.00 OK r ift 369.15 fmsl 12.15It OK (Y or N) (Y or N) OK media depth WO 3 OK (Y or N) OK b11 or N) OK or N) Submit a level spreader supplement. (Y or N) OK _'(YorN) OK (Y or N) OK (Y or N) Insufficient ROW location ft sec Insufficient inlet velocity unless energy dissipating devices are 1 being used. �(YorN) OK Y,OK `.'Ys`*'"(YorN) OK Form SW401-Bioretention-Rev.3 Parts I and II. Design Summarv. Noe 2 of 2 Permit Number: (to be provided by DW ) ®®_ �oP WAiF9\ ww� o ~ NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information. Project name Contact name Phone number Date Drainage area number Solid Rock United Methodist Church Capital Campaign Church/Community Campus,,Phase 1 - ? .>3 C. Tyrus Clayton, Jr., P.E. (910) 897-7070- June 6,2008 �d,,� 4 ..�•. �.v aL R� .,: „ I1:'3DESIGWNFORMATION..:' Site Characteristics Drainage area j;91 017.00 ft' Impervious area "75,562.00 ft' Percent impervious 83.0% % Design rainfall depth 1,00 inch Peak Flow Calculations 1-yr, 24-hr runoff depth ,"C"_et _,'�,3.06 in 1-yr, 24-hrintensity " ;°0.72 in/hr Pre -development 1-yr, 24-hr peak flow 0.05 ft3/sec Post -development 1-yr, 24-hr peak Flow ° 0.19 ft3/sec Pre/Post 1-yr, 24-hr peak control 0.14 ft3/sec Storage Volume: Non -SR Waters Design volume ! , `�-6,046.00 ft3 Storage Volume: SR Waters Pre -development 1-yr, 24-hr runoff Y.ft3 Post -development 1-yr, 24-hr runoff ft3 Minimum volume required 0.00 ft' Volume provided g , ,: ft' Cell Dimensions Ponding depth of water 10.00 inches OK Fondling depth of water 0.83 ft Surface area of the top of the bioretention cell 7800.00 ft' OK Length: 'r`w174.50 ft OK Width: 44:70 ft OK -or- Radius ft Soils Report Summary Drawdown time, ponded volume 12.00 hr OK Drawdown time, to 24 inches below surface 12.00 hr OK Drawdown time, total: 24.00 hr In -situ soil., Soil permeability 0.60 Whir OK Planting media soil. Soil permeability 1.50 in/hr OK Soil composition % Sand (by weight) 86% OK Fines (by weight) 10% OK % Organic (by weight) 4% OK Total: 100% Form SW401-Bioretenlion-Rev.3 Parts I and H. Design Summary, Page 1 of 2 Phosphorus Index (P-Index) Permit 20 (unitless) OK (to be provided by DWQ) Basin Elevations Temporary pool elevation Planting elevation (lop of the mulch) Bottom of the cell Planting depth Depth of mulch SHWT elevation Are underdrains being installed? How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required Distance from bottom to SHWT Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information 373.83 fmsl 373.00 fmsl Insufficient temporary pool elevation. 370.00 fmsl 3.00 it 3.00 inches OK 357.00 fmsl OK Y(YorN) 8 OK ; 6.00 OK 1ft 369.00 fmsl 12.00 it OK (Y or N) Y i..F.:. (Y or N) OK media depth 7 3 OK „•,, . "*3 OK x3. OK Does volume in excess of the design volume bypass the Ir n (Y or N) bloretention cell?b(Y Does volume in excess of the design volume flow evenly distributed . + Y ; (Y or N) through a vegetated filter? What is the length of the vegetated filter? �30 fit Does the design use a level spreader to evenly distribute flow.? kr Y h (Y or N) Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP located at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a recorded drainage easement with a recorded access easement to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretenlion cell greater than 20%? :, .N Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an X' in the shaded cell) Gravel and grass (flinches gravel followed by 3-5 it of grass) Grassed swale Forebay 14121 [6][1 Submit a level spreader supplement. (Y or N) OK (Y or N) OK (Y or N) OK (Y or N) Insufficient ROW location. Insufficient inlet velocity unless energy dissipating devices are being used. (Y or N) OK (Y or N) OK .+Y ., ;`(Y or N) OK See detail Fnrm SWAn1-Rinratanllnn-Revl Parts I and if Desian Summarv. Paae 2 of 2 � �, ja NCDENR Permit Number: (to be provided by DWQ) 0�04 W A iF•90 � r o � STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. _F .r :A u _ -INIPROJECT,INFORMATION Project name .Solid Rock United Methodist Church Capital Campaign Church/Community Campus Phase 1 Contact name C. Tyrus Clayton, Jr.,,P.E.134 Phone number (910) 897-7070 Date 'June6,2008 Drainage area number 5 0.r, � , �: .•' "' : �,'�;:^' `�� ; � `><sR � -'-�'�� �,a� �'' 11.1DESIGNiINFORMATION.''rw-..-., 4f, 4*_. - Site Characteristics Drainage area J S,419.00 ft2 Impervious area :8,837.00 ft2 Percent impervious 65.9% % Design rainfall depth 1.00 inch Peak Flow Calculations 1 -yr, 24-hr runoff depth <4p-.-3,06in 1-yr, 24-hr intensity 'i',0.12 in/hr Pre -development 1-yr, 24-hr peak flow 1 "I' , , 0.01 ft3/sec Post -development 1-yr, 24-hr peak flow +.0.03 ft3/sec Pre/Post 1-yr, 24-hr peak control 0.02 ft3/sec Storage Volume: Non -SR Waters Design volume a�719.00 ft3 Storage Volume: SR Waters Pre -development 1-yr, 24-hr runoff ft3 Post -development 1-yr, 24-hr runoff ;,. :;::ft3 Minimum volume required 0.00 ft3 Volume provided r+ ft3 Cell Dimensions Ponding depth of water 9.00 inches OK Ponding depth of water 0.75 It Surface area of the top of the bioretention cell '1108.00112 OK Length: 43.08 it OK Width: s`25.7211: OK -or- Radius ft Soils Report Summary Drawdown time, ponded volume ": 12.00 hr OK Drawdown time, to 24 inches below surface -12.00 hr OK Drawdown time, total: 24.00 hr In -situ soil: Soil permeability 0.60 inthr OK Planting media soil: Soil permeability 1.50 in/hr OK Soil composition % Sand (by weight) 86% OK % Fines (by weight) 10% OK % Organic (by weight) 4% OK Total: 100% rn.,n C1AIdo1_Rinmlonlinn-Rmr a Parts I and II. Desian Summary. Peas 1 of 2 Permit (to be provided by DWQ) Phosphorus Index (P-Index) Basin Elevations Temporary pool elevation Planting elevation (top of the mulch) Bottom of the cell Planting depth Depth of mulch SHWT elevation Are underdrains being installed? 20 (unitless) OK 375.44 first 374.69 first 371.69 fmsl 3.00 ft 3.00 inches 357.00 fmsl Y (Y or N) How many clean out pipes are being installed? ;::, . , 2 What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) >6ti0 Additional distance between the bottom of the planting media and 1 ft the bottom of the cell to account for underdrains Bottom of the cell required 370.69 fmsl Distance from bottom to SHWT 13.69 ft Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? _ 4 , c . '• (Y or N) Is this a cell with trees/shrubs? Y : (Y or N) Planting Plan Number of tree species Number of shrub species .:3 Number of herbaceous groundcover species :_ :;; . ,' 3 Additional Information .�L OK OK OK OK Y1 OK media depth OK OK OK Does volume in excess of the design volume bypass the ` Y ` "(Y or N) OK bioretention cell? Does volume in excess of the design volume flow evenly distributed.,"Y 4' (Y or N) OK through a vegetated filter? ,..u.- What is the length of the vegetated filter? rt, . =<30 ft Does the design use a level spreader to evenly distribute flows , ' Y urpr n ":a (Y or N) Submit a level spreader supplement. Is the BMP located at least 30 feet from surface waters (50 feet if Y "r'Y '(Y or N) SA waters)? KI Is the BMP located at least 100 feet from water supply wells? ^` %.,Y, -' ' . (Y or N) Are the vegetated side slopes equal to or less than 3:1? :> zY (Y or N) Is the BMP located in a recorded drainage easement with a :i`t;1; (Y or N) recorded access easement to a public Right of Way (ROW)? Inlet velocity (from treatment system) 3.5 (dissipation ft sec .,1 a k 1provided) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? N(kv# "'j Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an X' in the shaded cell) Gravel and grass See detail (8 inches gravel followed by 3-5 ft of grass) Grassed swale Forebay KI OK OK Insufficient ROW location. Insufficient inlet velocity unless energy dissipating devices are being used. or N) OK or N) OK or N) OK cn.,., n Parts I and ii, nasinn Summary. PNOe 2 of 2 Permit *L& NCDENR (to be provided by DWQ) 0�0� W ATicgOG y f > y O Y STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part Ill) must be printed, filled out and submitted along with all of the required information. Project name Contact name Phone number Date Drainage area number Site Characteristics Drainage area Impervious area Percent impervious Design rainfall depth Peak Flow Calculations 1-yr, 24-hr runoff depth 1-yr, 24-hr intensity Pre -development 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Pre/Post 1-yr, 24-hr peak control Storage Volume: Non -SR Waters Design volume Storage Volume: SR Waters Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr runoff Minimum volume required Volume provided Cell Dimensions Ponding depth of water Ponding depth of water Surface area of the top of the bioretention cell Length: Width: -or- Radius Soils Report Summary Drawdown time, ponded volume Drawdown time, to 24 inches below surface Drawdown time, total: In -situ soil: Soil permeability Planting media soil: Soil permeability Soil composition % Sand (by weight) % Fines (by weight) % Organic (by weight) Solid Rock United Methodist Church Capital C. Tyrus.Clayton, Jr., RE (910) 897-7070 5 June 6, 2008 3,987.00 ft2 ' 11,586.00 ft2 82.8% % .1,00inch '`gyp >',t3.06 in 0.12 in/hr 0.01 ft/sec =0.03 ft3/sec 0.02 ft'/sec 927.00 ft3 ft3 ;ft3 0.00 ft' ft3 9A0 inches OK 0.75 ft � 1404.00 ft2 OK °46.80 ft OK 30.00 ft OK ft .12.00 hr OK .<- 12.00 hr OK 24.00 hr 0.66 in/hr OK 1.50 in/hr OK 86% OK 10% OK 4% OK Total: 100% Phase L :S;;;,. Form SW401-Bioretention-Rev.3 Parts I and II. Design Summary. Paqe 1 of 2 Permit Number: (to be provided by DWQ) Phosphorus Index(P-Index) Basin Elevations Temporary pool elevation Planting elevation (top of the mulch) Bottom of the cell Planting depth Depth of mulch SHWT elevation Are underdrains being installed? How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required Distance from bottom to SHWT Type of bioretention cell (answer Y' to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information 20 (unitless) OK 375.75 fmsl 375.00 fmsl OK 372.00 fmsl 3.00 It 3.00 inches OK 357.00 first OK Y (YorN) 2 OK 6.00 OK 1ft 371.00 fmsl 14.00 ft OK (Y or N) Y . (Y or N) OK media depth OK 3 OK Does volume in excess of the design volume bypass the t bioretention cell? , °; ,Y a „ (Y or N) Does volume in excess of the design volume flow evenly distributed Y 9" -<!r (Y or N) through a vegetated filter? - k?-'- What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP localed at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a recorded drainage easement with a recorded access easement to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (8 inches gravel followed by 3-5 ft of grass) Grassed Swale Forebay 92 OK or N) Submit a level spreader supplement. or N) OK or N) OK or N) OK n � eN/A ` Ae� (Y or N) 1 00 fl/sec N (Y or N) �Y xr; N �(YorN) „rY,r'' (Y or N) X Insufficient ROW location. OK OK OK OK Nil Form SW401-Bioretention-Rev.3 Parts I and II. Design Summary, Page 2 of 2 Permit No: (to be assigned by DWQ) Please indicate the page or plan sheet numbers where the supporting documentation can be found. An Incomplete submittal package will result In a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Pagel Plan Initials Sheet No. CI Sh vei 3 1. Plans (1' - 50' or larger) of the entire site showing: - Design at ultimate build -out, - Off -site drainage (if applicable), - Delineated drainage basins (include Rational C coefficient per basin), - Cell dimensions, - Pretreatment system, - High flow bypass system, - Maintenance access, - Proposed drainage easement and public right of way (ROW), - Clean out pipe locations, - Overflow device, and - Boundaries of drainage easement. 74 5%1 aP} g 2. Plan details (1" = 30' or larger) for the bioretenlion cell showing: Sh pe I I 0 Cell dimensions Pretreatment system, - High flow bypass system, - Maintenance access, Recorded drainage easement and public right of way (ROW), Design at ultimate build -out, Off -site drainage V applicable), - Clean out pipe locations, - Overflow device, and - Boundaries of drainage easement. /n� l I I Sly eA 10 3. Section view of the bioretenlion cell (1' = 20' or larger) showing: - Side slopes, 3:1 or lower - Underdrain system (if applicable), and - Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable), SHWT level(s), and overflow structure] C n 61at l �'FY 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The �� results of the soils report must be verified in the field by DWQ, by completing & submitting the soils investigation request form. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in situ soil must include: - Soil permeability, - Soil composition (% sand, % fines, % organic), and Adindex. 5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing: - A variety of suitable species, - Sizes, spacing and locations of plantings, - Total quantity of each type of plant specified, - A planting detail, - The source nursery for the plants, and - Fertilizer and watering requirements to establish vegetation. 6. A construction sequence that shows how the bioretention cell will be protected from sediment until the entire drainage area is stabilized. p rd; O 7. The supporting calculations (including underdrain calculations, ff applicable). C �C dl f ii� 8. A copy of the signed and notarized operation and maintenance (0&M) agreement. 9. A copy of the deed restrictions (if required). P.0111 Pan. 1 of 1 ®w� NCD\ENR 'F Vl AVIAT\E\g\,\O 1 ✓�r�v� 4 ONii�I STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be completely filled out, printed and submitted. DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I Project name Solid Rock United Methodist Church Capital Campaign Church/Community Campus, Phase 1 Contact name C. Tyms Clayton, Jr., P.E. ; • -�- - :, Phone number (910)897-7070 Date June 6,2008 Drainage area number .Level Spreader 1�' y.p- 1' J }"9 s Jzr 4i w?M t y-,y,bM TP. :: i Y •Qfe, y'i 3 gS 1 .Yy",{aY+ kV^` II:tDESIGNINFORMATION;a , For Level Spreaders Receiving Flow From a BMP Type Of BMP Drawdown flow from the BMP cfs For Level Spreaders Receiving Flow from the Drainage Area Drainage area 50,836.67..1, ft' Impervious surface area r':aktl-, 37,408.67.: ^.If Percent impervious 73.59 % Rational C coefficient " r0.83, Peg! flow from the 1 inthr storm 0.97 cfs Time of concentration -llr 5.00A , ,4min Rainfall intensity, 10-yr storm ' • i.e2 inthr Peak flow from the 10-yr storm 7.57 cis Where Does the Level Spreader Discharge? To a grassed blorelenlion cell? y ::iIJ "" (Y or N) To a mulched bioretention cell? (Y or N) To a wetland? N ;C c (Y or N) TO a feller Strip or riparian buffer? -s'=Y • x .' (Y or N) Please complete filler strip characterization below, Other (specify) Filter Strip or Riparian Buffer Characterization (If applicable) Width.ofgrass w r30.00 ;:_= It Width of dense ground cover ' �:': 0.00. >•'' fl Width of wooded vegetation ; n0.00 '. If Total width #30.00. It Elevation at downslope base of level lip ,,;�359.70: �Ai, fmsl Elevation at lop of bank of the receiving water f^aa- 357.30', r'' fmsl Slope (from level lip to to top of bank) 8.00 % Are any draws present? ^'N (Y or N) OK Level Spreader Design Forebay surface area 190.00 sq It OK Feet of level lip needed per cfs 13 h/cfs Answer "Y" to one of the following: Length based on the 1 infhr storm? "- N (Y or N) Length based on the 10-yr storm? Y (Y or N) Length based on the BMP discharge rate? N (Y or N) Design flow 8.00 cfs Is a bypass device provided? N (Y or N) A bypass device Is not needed. Forrn SW401-1-evel Spreader, Filter Strip, Restored Riparian Buffer -Revs Parts I. and II. Design Summary, page 1 of 2 Length of the level lip Are level spreaders in series? Bypass Channel Design (If applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): M B IN y Peak velocity in the channel during the 10-yr storm Channel lining material M B 104.00 ft Level spreader length OK. N (Y or N) (Y or N) Do not complete this section of the worksheet. (Y or N) Do not complete this section of the worksheet. Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. ft Do not complete this section of 0e worksheet. ft Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. afs Do not complete this section of the worksheet. Do not complete this section of the worksheet s, . d-------------- l M Fonn SW401-Level Spreader, Filler Strip, Restored Riparian BuHer-Rev.5 Pans I. and II. Design Summary, page 2 of 2 o?op via7e,q awn o NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be completely filled out, printed and submitted. DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I I?PROBECT;INF.ORMATION.e,%,l'!`<r�a c,., "' ".r,r sx:hn: d t �, +,e« -." '11-44ffiF Project name Solid Rock United Methodist Church Capital Campaign ChurchlCommunity Campus, Phase 1 Contact name ;C. Tyms Clayton, Jr., P.E.^,-.• ` Phone number f(910) 697-7070 Date -June 6, 200-8 - - i Drainage area number Level Spreader2 For Level Spreaders Receiving Flow From a BMP Type ofBMP :e,,r, Drawdown flow from the BMP _. cfs For Level Spreaders Receiving Flow from the Drainage Area Drainage area 50,836.67' it' Impervious surface area 37,408.67<�. ftZ Percent impervious 73.59 % Rational C coefficient * °x :0.83 - A� Peak flow from the 1 in/hr storm 0.97 ds Time of concentration .'lt ?,,'�5.00 "xM , Imin Rainfall intensity, 1 0-yr storm "^:' 7.62'in/hr Peak flow from the l0-yrstorm 7.57 cfs Where Does the Level Spreader Discharge? To a grassed bioretention cell? ,a' N (Y or N) To a mulched bioretention cell? vN (Y or N) To a wetland? ; -IN (Y or N) To a filler strip or riparian buffer? "Y (Y or N) Please complete filter step charactedzatbn below. Other (specify) yzr- - , csr �'# Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass Width of dense ground cover rO00 ,: ,,.,j"ft Width of wooded vegetation $�k'x'400 ,;-"_' h Total width o"r `"00.00 '„> it Elevation at downslope base of level lip ",362.90 fmsl Elevation at top of bank of the receiving water •;''1360.50 - fmsl Slope (from level lip to to top of bank) 8.00 % Are any draws present? N .'-<.. (Y or N) OK Level Spreader Design Forebay surface area "" . " 190.00 ' : sq ft OK Feet of level lip needed per cis 13 ft/ds Answer "Y" to one of the following: Length based on the 1 in/hr storm? N -(Y or N) Length based on the 10-yr storm? Y '(Y or N) Length based on the BMP discharge rate? N (Y or N) Design flow :-8.00 cfs Is a bypass device provided? N (Y or N) A bypass device is not needed. Form SW401-Level Spreader, Filter Sldp, Restored Riparian Buffer-Rev.5 Parts I. and IL Design Summary, page 1 of 2 Length of the level lip Are level spreaders in series? Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): M B W y Peak velocity in the channel during the 10-yr storm Channel lining material 104.00 ft Level spreader length OK. N (Y or N) (Y or N) Do not complete this section of the worksheet. (Y or N) Do not complete this section of the worksheel. Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. fl Do not complete this section of the worksheet. ,:. cfs Do not complete this section of the worksheet Do not complete this section of the worksheet 4 M M i B i Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and H. Design Summary, page 2 of 2 o/L�F►ryw��AA7E,gOG NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be completely filled out, printed and submitted. DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I I`.PR0JECT4NF,0RMATI0NL Project name Solid Rock United Methodist Church Capital Campaign ChurchlCommunity.Campus, Phase,1 Contact name C. Tyms Clayton, Jr,, RE Phone number--(910)897-7070 Date June8,2008 n,' ''�;i✓ce.'ri •a;n .„;s ,7i7 Drainage area number ,Level Spreader �., :� �,<�^`' s For Level Spreaders Receiving Flow From a BMP _ Type of BMP r ` - ro a=•. Drawdown flow from the BMP , `r- cis For Level Spreaders Receiving Flow from the Drainage Area Drainage area-:''.' 50,8213.67. ftZ Impervious surface area ; %37,408.67 r"ftZ Percent impervious 73.59 % Rational C coefficient 0.83 - Peak flow from the 1 in/hr storm 0.97 cfs Time of concentration - - 5.00 " 3 min Rainfall intensity, 10-yr storm "'.e 7.82 inlhr Peak flow from the 10-yr storm 7.57 cfs Where Does the Level Spreader Discharge? To a grassed bioretention cell?-7=!,,- 3N ' �g;.(Y or N) To a mulched bioretention cell? N Y, <(Y or N) To a wetland? -N, <�.;: . (Y or N) To a filter strip or riparian buffer? ' , r64 Y+': ! (Y or N) Please complete filter strip characterization below. Other (specify) 'z Ji Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass Width of dense ground cover 0.00 it Width of wooded vegetation ' "f � „i..0.00 :il' "'' ft Total width �n130.00:)'- ft Elevation at downslope base of level lip r362.90 . 'fmsl Elevation at top of bank of the receiving water360.50 -, fmsl Slope (from level lip to to lop of bank) 8.00 % Are any draws present? N " I r: • (Y or N) OK Level Spreader Design Forebay surface area 190.00 scift OK Feet of level lip needed per cfs 13 fticfs Answer "Y' to one of the following: Length based on the 1 inthr storm? N (Y or N) Length based on the 10-yr storm? Y (Y or N) Length based on the BMP discharge rate? N (Y or N) Design flow 8.00 cfs Is a bypass device provided? N (Y or N) A bypass device is not needed. Form SW401-Level Spreader, Filter Strip, Restored Ripanan Buffer-Rev.5 Pans I. and 0. Design Summary, page 1 of 2 Length of the level lip Are level spreaders in series? Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): M B W y Peak velocity in the channel during the 10-yr storm Channel lining material 104.00 ft Level spreader length OK. N (Y or N) (Y or N) Do not complete this section of the worksheel. (Y or N) Do not complete this section of the worksheet Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. ft Do not complete this section of the worksheet. fl Do not complete this section of the wodcsheel. ft Do not complete this section of the mirksheet. ds Do not complete this section of the worksheet 'Do not complete this section of the worksheet Form SW401-1-evel Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and Il. Design Summary, page 2 of 2 III ?,�4REQUIRED'ITEMS;CHECKLISTx `` '4 '., Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Pagel Plan Initials Sheet No. C P2 Sheet S 1. Plans (1" - 50' or larger) of the entire site showing: - Design at ultimate build -out, - Off -site drainage (if applicable), - Delineated drainage basins (include Rational C coefficient per basin), - Forebay (if applicable), - High flow bypass system, - Maintenance access, - Proposed drainage easement and public right of way (ROW), and - Boundaries of drainage easement. T Shee 5II- )D 2. Plan details (1" = 30' or larger) for the level spreader showing: - Forebay (if applicable), - High flow bypass system, - One foot topo lines between the level lip and top of stream bank, - Proposed drainage easement, and - Design at ultimate build -out. C Sift'f �� 3. Section view of the level spreader (1" = 20' or larger) showing: Underdrain system (if applicable), P 4— S� - Level lip, - Upslope channel, and Downslope filter fabric. 4.)A date -stamped photograph of the filter strip that clearly shows the type of vegetation that is present. 5. A construction sequence that shows how the level spreader will be protected from sediment until the entire drainage area is stabilized. 6. The supporting calculations. 7. A copy of the signed and notarized operation and maintenance (0&M) agreement. B. A copy of the deed restrictions (if required). Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Part III, page 1 of 1