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HomeMy WebLinkAboutSW6201002_PACKAGE TO STORMWATER 10-1-2020_20201006KEN BRIGHT ASSOCIATES, PLLC Consultina Enaineers October 1, 2020 Mr. Corey Anen North Carolina Department of Environmental Quality 217 West Jones Street Raleigh, NC 27603 Re: Fair Ridge Farms Subdivision Harnett County Dear Mr. Anen, Attached please plans and applications for Fair Ridge Farms Subdivision for your review. The project is located in Harnett County and is a Phase II project. The built upon area is 12.97% of the project area making it a Low -Density Project with grass swales and some cross pipes under the road to carry the runoff. Attached are the following documents: 1. Original and one copy of the Stormwater Management Application form, 2. Check in the amount of $ 505.00 3. Two Sets of plans 4. One copy of the sealed Calculations 5. Narrative of the proposed Storm management for the project 6. Original and one copy of the signed and notarized Low Density Residential Subdivisions Deed Restrictions & Protective Covenants 7. Original and one copy of the Operation & Maintenance Agreement. 8. Original and one copy of Supplement EZ 9. A copy of the USGS map. 10. A copy of Property Deed. DB 5090, Page 463. 11. A copy of the soils report for your information. If you have any questions please feel free to contact me. We will be on vacation for the next week and we will address any comments you have when we come back. Sincerely, J� Ken W. Bright, PE Letter Stormwater Application Fari Ridge Farms.doc P.0 Box 553 2305 Carthage Street Sanford, NC 27330 Phone: (919) 776-3444 e-mail: kwbright@kenbrightengineering.corn DEMLR USE ONLY Date Received Fee raid Permit Number Applicable Rules: ❑ CoastaI SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction (select all that apply) ❑ Non -Coastal SW- HQW /ORW Waters ❑ Universal Stormwater Management Plan ❑ Other WQ M mt Plan: State of North Carolina Department of Environment and Natural Resources Division of Energy, Mineral and Land Resources STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied far use as an original I. GENERAL INFORMATION 1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Fair Ridge Farms Subdivision 2. Location of Project (street address): 5628 R sser P' an Rd - SR 121 City:Sanford Townshil: Barbecue _ County:Harnett Zip:28327 3. Directions to project (from nearest major intersection): From Sanford Take H= 87 S to Fa ettevi le. Turn left on McD al Drive. go for 3.3 mile Turn Right on Rosser Pittman Rd and drive f r apprpximatelly 1 mile. Site is on the right ide. 4. Latitude:35° 21' 37" N _. Longitude:79° 02' 51" W of the main entrance to the project. II. PERMIT INFORMATION: 1. a. Specify whether project is (check one): ®New []Modification ❑ Renewal w/ Modificationt tRenewals with modifications also requires SWU-102 - Renewal Application Form b. If this application is being submitted as the result of a modification to an existing permit, list the existing permit number , its issue date (if known) and the status of construction: ®Not Started ❑Partially Completed* ❑ Completed* provide a designer's certification 2. Specify the type of project (check one): ®Low Density []High Density ❑Drains to an Offsite Stormwater System []Other 3. If this application is being submitted as the result of a previously returned application or a letter from DEMLR requesting a state stormwater management permit application, list the stormwater project number, if assigned, and the previous name of the project, if different than currently proposed, 4. a. 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: 7.3 ac of Disturbed Area ❑NPDES Industrial Stormwater 0404/401 Permit: Proposed Impacts b.If any of these permits have already been acquired please provide the Project Name, Project/ Permit Number, issue date and the type of each permit: 5. Is the project located within 5 miles of a public airport? N No ❑ Yes If yes, see S.L. 2012-200, Part ill: Form SWU-101 Version Oct. 31, 2013 Page 1 of 6 III. CONTACT INFORMATION I. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee, designated government official, individual, etc. who owns the 12roject}: Applicant/Organization:Rosser Pittman Land Development LLC Signing Official & Title: Elvis Faircloth b. Contact information for person listed in item 1a above: Street Address:PO Box 1310 City:Broadway State:NC Zip:27505 Mailing Address (if applicable): City: State: Zip: Phone: (919 } 499-8190 Fax: Email:elvisfaircloth@yahoo.com c. Please check the appropriate box. The applicant listed above is: ® The property owner (Skip to Contact Information, item 3a) ❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below) ❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and 2b below) ❑ Developer* (Complete Contact Information, item 2a and 2b below.) 2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the person who owns the property that the project is located on): Property Owner/Organization: Signing Official & Title: b. Contact information for person listed in item 2a above: Street Address: City: State: Zip: Mailing Address (if applicable): City: Phone: Email: State: Zip: Fax: 3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other person who can answer questions about the project: Other Contact Person / Organization: Signing Official & Title: b. Contact information for person listed in item 3a above: Mailing Address: City: State: Zip: Phone: ( ) _ Email: Fax: ( i 4. Local jurisdiction for building permits: Harnett County _ r Point of ContactJay Sikes Phone #: (910 } 893-7525, x4 Form SWU-101 Version Oct. 31, 2013 Page 2 of 6 IV. PROJECT INFORMATION 1. In the space provided below, briefly summarize how the stormwater runoff will be treated. This is a low density ro'ect. The soils are well drained loamy sands. The runoff will be treated with disl2ersed flow and grass swales. A detention pond will be added for volume control. 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 PUDApproval 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 CaA,w a Fear River basin. 4. Total Property Area: 43.6 acres 5. Total Coastal Wetlands Area: acres 6. Total Surface Water Area: 0.42 acres 7. Total Property Area (4) — Total Coastal Wetlands Area (5) — Total Surface Water Area (6) = Total Project Area': 43.18 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 NormalHigh Water (NHW) Iine or Mean High Water (MHW) line, and coastal wetlands landward from the NHW (or MHW) line. The resultant project area is used to calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NHW (or MHW) line may be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 =12.95 9. How many drainage areas does the project have?J (For high density, count I 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 Draina a Area 1 Drainage Area _ Drainage Area Drainage Area _ Receiving Stream Name Big Branch Stream Class C Stream Index Number 18-20-13-5 Total Drainage Area s1,8",216 On -site Drainage Area sf 1,899,216 O -site Drainage Area sf Pro osed Impervious Area" (sf) 262,980 `% Im ervious Area (total)121.95 Impervious— Surface Area Drainage Area 1 Drainage Area _ Drainage Area _ Drainage Area On -site Buildings Lots s 195,000 On -site Streets sf 65,480 -site Parking s On -site Sidewalks (sf Other on -site sf 2,500 Future s Off -site (sf) Existing BUA s 22,216 ota s , Stream Class and Index Number can be determined at: �* Im ervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. 'Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that is to be removed and which will be replaced by new BUA. Form SVvU-101 Version Oct. 31, 2013 Page 3 of 6 11. How was the off -site impervious area listed above determined? Provide documentation. Attached is spreadsheet with BUA calculation. Density was calculated as per 15A NCAC 2H .1003(l) b ZMMinUni fMW Contact DEMLR Central Office staff to check if the project is located within a Threatened & Endangered Species watershed that may be subject to more stringent stormwaterrequirements riper 15A NCACO2B .06W. V. SUPPLEMENT AND O&M FORMS The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded from VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Energy, Mineral and Land Resources (DEMLR). A complete package includes all of the items listed below. A detailed application instruction sheet and BMP checklists are available from . The complete application package should be submitted to the appropriate DEMLR Office. (The appropriate office may be found by locating project on the interactive online map at ) Please indicate that the following_ required information have been provided by initialing in the space provided for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for each submitted application package from 1. Original and one copy of the Stormwater Management Permit Application Form. 2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants Form. (if required as per Part VII below) 3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M agreement(s) for each BMP. 4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to http://www.envhelg.orglvages/onestopexpress.html for information on the Express program and the associated fees. Contact the appropriate regional office Express Permit Coordinator for additional information and to schedule the required application meeting.) 5. A detailed narrative (one to two pages) describing the stormwater treatment/management 6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the receiving stream drains to class SA waters within xh mile of the site boundary, include the'h mile radius on the map. 7. Sealed, signed and dated calculations (one copy). 8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: a. Development/Project name. b. Engineer and firm. c. Location map with named streets and NCSR numbers. d. Legend. e. North arrow. f. Scale. g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elevation of impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal waters, and any coastal wetlands landward of the MHW or NHW lines. • Delineate the vegetated buffer Iandward from the normal pool elevation of impounded structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters. i. Dimensioned property/project boundary with bearings & distances. j. Site Layout with all BUA identified and dimensioned. k. Existing contours, proposed contours, spot elevations, finished floor elevations. 1. Details of roads, drainage features, collection systems, and stormwater control measures. m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a qualified person. Provide documentation of qualifications and identify the person who made the determination on the plans. n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations. o. Drainage areas delineated (included in the main set of plans, not as a separate document). p. Vegetated buffers (where required). for &g Form SWU-101 Version Oct. 31, 2013 Page 4 of 6 9. Copy of any applicable soils report with the associated SHWT elevations (Please identify elevations in addition to depths) as well as a map of the boring locations with the existing elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the project area clearly delineated. For projects with infiltration BMPs, the report should also include the soil type, expected infiltration rate, and the method of determining the infiltration rate. (Infiltration Devices submitted to WiRO: Schedule a site visit for DEMLR to verify the SHWT prior to submittal, (910) 796-7378.) 10. A copy of the most current property deed. Deed book: 3747 Page No: 834 11. For corporations and limited liability corporations (LLC): Provide documentation from the NC Secretary of State or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item la, 2a, and/or 3a per 15A NCAC 2H.1003(e). The corporation or LLC must be listed as an active corporation in good standing with the NC Secretary of State, otherwise the application will be returned. http: / /www.secretary.state.nc.uslCorporations /CSearch.aspx VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and protective covenants forms can be downloaded from . Download the latest versions for each submittal. In the instances where the applicant is different than the property owner, it is the responsibility of the property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded. By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and protective covenants for this project, if required, shall include all the items required in the permit and listed on the forms available on the website, 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 NC DEMLR, and that they will be recorded prior to the sale of any lot. VIII. CONSULTANT INFORMATION AND AUTHORIZATION Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as addressing requests for additional information). Consulting Engineer:Ken W. Bright, PE Consulting Firm:, Ken Bright Associates. PLLC ...._ Mailing Address:PO Box 553 City:Sanford State:NC Zip:27331 Phone: (919 } 356-4687 Fax: Email:kwbright@kertbrig.htengineering.coM IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this section) 1, (print or type name of person listed in Contact Information, item 2a) certify that I own the property identified in this permit application, and thus give permission to (print or type name of person listed in Contact Information, item 1a) with (print or type name of organization listed in Contact Information, item 1a) to develop the project as currently proposed. A copy of the lease agreement or pending property sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system. Form SWU-101 Version Oct. 31, 2013 Page 5 of 6 As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated agent (entity listed in Contact Information, item 1) dissolves their company and / or cancels or defaults on their lease agreement, or pending sale, responsibility for compliance with the DEMLR Stormwater permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DEMLR immediately and submit a completed Name / Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including the assess nt pf ci it penalties of up to $25,000 per day, pursuant to NCGS 1443-215.6. Signature: l Date:_ O- 15 h L, A� a Nota Publi for tt�he State of - unty of do hereby certify that �1(/L(i(.y personally appeared before me this— may of gt4k . and acl wledge the due ecu�theation for a stormwater permit. Witness my�andandfficial seal, SEAL My commission expiresd,2z 1 _3 X. APPLICANT'S CERTIFICATION 1, (print or type name of person listed in Contact Information, item Ia) Elvis Fairclot 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 and protective covenants will be recorded, and that the proposed project complies with the requirements of the applicable stormwater 7(271* 15A NCAC 2H .1000 and any other applicable state stormwater requirements. _ rr-� ,,A�Signature:at,�e_ Date: v —(J 1, I E a Now'y Public for the State of ~ County of do hereby certify that personally appeared before me thiiLA& of i� , and ac owledge the due executi n of the pplication for a stormwater permit. Witness my and and official seal, . SEAL My commission expires Form SWU-101 Version Oct. 31, 2013 Page 6 of 6 Low Density Residential Subdivisions Deed Restrictions & Protective Covenances In accordance with Title 15 NCAC 2H.1000 and S.L. 2006-246, the Stormwater Management Regulations, deed restrictions and protective covenants are required for Low Density Residential Subdivisions where lots will be subdivided and sold. Deed restrictions and protective covenants are necessary to ensure that the development maintains a "built -upon" area consistent with the applicable regulation governing the density level. I, _Elvis Faircloth_ acknowledge and affirm by my signature below, that 1 will cause the following deed restrictions and protective covenants to be recorded for Fair Ridge Farms Subdivision prior to the sale of any lot: 1. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number , as issued by the Division of Energy, Mineral and Land Resources under the Stormwater Management Regulations. 2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the stormwater management permit. 3. These covenants are to run with the land and be binding on all persons and parties claiming under them. 4. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Energy, Mineral and Land Resources. 5. Alteration of the drainage as shown on the approved plan may not take place without the concurrence of the Division of Energy, Mineral and Land Resources. 6. The maximum allowable built -upon area per lot is 5,000 square feet. This allotted amount includes any built -upon area constructed within the lot property boundaries, and that portion of the right-of-way between the front lot line and the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, and coquina, but does not include raised, open wood decking, or the water surface of swimming pools. 7. in the case of a lot within CAMA's regulated AEC, where the Division of Coastal Management calculates a different maximum allowable built -upon area for that lot than is shown herein, the governing maximum built -upon area for that lot shall be the most restrictive of the two. 8. Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the development except for average driveway crossings is strictly prohibited by any persons. 9. Each lot will maintain a 30* foot wide vegetated buffer between all impervious areas and surface waters. 10. All roof drains shall terminate at least 30* foot from the mean high water mark of surface waters. *50 foot for projects located in thle 2 coastal counties. Signature: L�":L—% . ��„� r'� Date: l � )q^) a Notary Public in the State of County of do hereby certify that r ��lx-( personally appeared before me this the (L' 7ay of , 20=2Z,)_, and acknowledge the due execution of the foregoing instrument. Witness my hand and official seal, SEAL Signature My Commission expires Form DRPC-5 Rev.2 05Nov2009 Page l of 1 operation & maintenance Agreement Project Name: Project Location: Fair Ridge Farms Subdivision 5828 Rosser Pittman Rd Harnett County, NC _ Cover_ Page _ Maintenance records shall be kept on the following BMP(s). This maintenance record shall be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired, or replaced These deficiencies can affect the integrity of structures, safety of the public, and the pollutant removal efficiency of the BMP(s). The BMP(s) on this project include (check all that apply & cc Bioretention Cell Quantity: Dry Detention Basin Quantity: Grassed Swale Quantity: Green Roof Quantity: Infiltration Basin Quantity: Infiltration Trench Quantity: Level SpreaderNFS Quantity: Permeable Pavement Quantity: Proprietary System Quantity: Rainwater Harvesting Quantity: Sand Filter Quantity: Stormwater Wetland Quantity: Wet Detention Basin Quantity: Disconnected Impervious Area Present: User Defined BMP Present: O&M tables will be added automatically): Location(s): Location(s): Behind lot 12 Location(s): Along the Roads, towards Det Pond Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for each BMP above, and attached O&M tables. I agree to notify NCDENR of any problems with the system or prior to any changes to the system or responsible party. * Responsible Party: Title & Organization: Street address: City, state, zip: Phone number(s): Email: Signature: County of personally appeared before me this Elvis Faircloth Rosser Pittman Land Development LLC PO Box 1310 Broadway, NC 27505 (919) 499-8190 ,eivisfaircloth@yahoo.com � tk Date:��" , a Notary Public for the State of do hearby certify that 9 J- V r' 5 &4 0.1'6:-L6 day of 4""'d o? 4-V-6 and acknowledge the due execution of the Operati9ns and Mainten Witness my hand and official seal, 3, "-q-VA V?-/ Grassed Swale Maintenance Re uirements 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 to remediate the problem: The perimeter of the BMP Areas of bare soil andlor Regrade the soil if necessary to remove the gully, and then plant a erosive gullies have formed. ground cover and water until it is established. Provide lime and a one- time fertilizer application. Vegetation is too short or too Maintain vegetation at a height of approximately six inches. long. 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 remove the gully, and then re -sod (or erosive gullies have formed. 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 area that will not impact streams the bottom of the swale. or BMPs. Re -sod if necessary. Vegetation is too short or too Maintain vegetation at a height of approximately six inches. long. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Department of Environment and Natural damage have occurred at the Resources Regional Office. outlet. FORM-EZ 8/25/20; Dry Detention Pond Maintenance Requirements Important maintenance procedures: - The drainage area will be managed to reduce the sediment load to the dry extended detention basin. Immediately after the dry extended detention basin is established, the vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). - No portion of the dry extended detention pond will be fertilized after the first initial fertilization that is required to establish the vegetation. - The vegetation in and around the basin will be maintained at a height of approximately six inches. - If cracks, seepage, or woody vegetation is present, consult a dam safety expert for a dam inspection. The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. After the dry detention basin is established, it will be inspected quarterly. Inspection activities shall be performed as follows and any problems identified will be remediated immediately per the table below. BMP element: Potential problem: How to remediate the problem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the BMP Areas of bare soil and/or Regrade the soil if necessary to remove the gully, and then plant a erosive gullies have formed. ground cover and water until it is established. Provide lime and a one- time fertilizer application. Vegetation is too short or too Maintain vegetation at a height of approximately six inches. long. The inlet device The pipe is clogged. Unclog the pipe. Dispose of the sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to smooth it over and provide erosion Swale. control devices such as reinforced turf matting or riprap to avoid future problems with erosion. Stone verge is clogged or Remove sediment and replace with clean stone. covered in sediment (if applicable). The forebay Trash/debris is present. Remove the trash/debris. Erosion has occurred or Provide additional erosion protection such as reinforced turf matting or riprap is displaced. riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. If pesticides are used, wipe them on the plants rather than spraying. roRM-EZ 8/25/20: Dry_ Detention Pond Maintenance Requirements (continued) BMP element: Potential problem: How to remediate the problem: The main treatment area Sediment has accumulated Search for the source of the sediment and remedy the problem if and reduced the depth to 75% possible. Remove the sediment and dispose of it in a location where it of the original design depth will not cause impacts to streams or the BMP. Revegetate disturbed (per pond design data sheet) areas immediately with sod (preferred) or seed protected with securely staked erosion mat. Water is standing more than Check outlet structure for clogging. If it is a design issue, consult an 5 days after a storm event. appropriate professional. Weeds and noxious plants Remove the plants by hand or by wiping them with pesticide (do not are growing in the main spray). treatment area. The embankment Shrubs or trees have started Remove shrubs or trees immediately. to grow on the embankment. Grass cover is unhealthy or Restore the health of the grass cover — consult a professional if eroding. necessary. Signs of seepage on the Consult a professional. downstream face. Evidence of muskrat or Use traps to remove muskrats and consult a professional to remove beaver activity is present. beavers. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Department of Environment and Natural damage have occurred at the Resources Regional Office. outlet. rORM-EZ 8/25120; SUPPLEMENT-EZ COVER PAGE FORMS LOADED PROJECT INFORMATION a _- - 1 lProJect Name-----__� 2 Project Area (ac) — _-- 3 Coastal Wetland Area ac 4 Surface Water Area ac _5 IsthisproLqt H_or Low Densit+y7 6 1 Does this project use an off -site SCM? 7 Width of vegetated setbacks provided (feet} 8 Will the vegetated setback remain vegetated? 9 Is BUA other that as listed in .1003[a).Cc-d) out of the setback? 10 is streambank stabilization proposed on this project? NUMBER AND TYPE OF SCI4ts: FORMS LOADED 71 iESIGNER CERTIFICATION 27 Name and Title: 29 'Street address: 30 City, State 31 Phone numbers) 32 Email: FAiR RIDGE FARMS SUBDIVISION 43.6 0.42 No KEN W. 8121GHT �. KEN BRIGHT ASSOCIATES PLt 2305 CARTHAGE ST SANFORD, NC 27330 Certification Statement; I certify, under penalty of law that this Supplement-EZ form and all supporting information were prepared under my direction or supervision; that the information provided in the form is, to the best of my knowledge and belief, true, accurate, and complete; and that the engineering plans, specifications, operation and maintenance agreements and other supporting information are consistent with the information provided here. SEAL 17535 — Signature of Designer 9- 3V, 0 Date DRAINAGE AREAS - '1 is this a ii -j40 -- - ------- 2 if so, number of drainage areas/SCMs Is all/part of this projectsubject to previous rule 'is !31versions? No I FORMS LOADED DRAINAGE AREA INFORMATION 4' :TvDe of SCIVI 6 Total BUA 1!1 t _1 _prolec (sq ft) New BUA on subdivided lots (subject to permitting) New BUA outside of subdivided lots (subject to 7 permittin s �g) (A —8 --,! offiote--iot"ai area 10 .Breakdown of now BUA outside subdivided h Pa Sidewalk (sq Roof (sq ft) ... Roadway (sq ft Future q ft) Other, please specify in the comment box I below (sq ft) ­JNew Infiltrating permeable pavement on New infiltrating permeable pavement outside SWale5 262980 sf _._.. __ I E)dsftng BUA that will remain (not subject to 13 permitting) (qX.' 22216 sf 14 Existing BUA that is already permitted 15 -6 ExJstoq_41J8_that will be removed (sq ft) i Percent BUA 12% 17 Design storm (inches) 6 in 18 Design volume of SCIVI (cu ft)_ . ......... --1,4046of 19 Calculation method for design volume SCS i6661014AIL INFO . RMATION ­7P-Wise usethisspace to provide any additional information about the DRAINAGE AREA INFORMATION Entire Site Type of SCIVI NtA- -4 5 Total BUA from project (sq ft) 6 1995 rules SL 2006-246' 2008 rules 2017 rules Now BUA on subdivided Iiii (subject to 7 1 permitting) (sq ft) 1995 rules SL 2006-246 2008 rules 017 rules Now BUA outside of subdivided lots (subject to 8 permilling) (sf? 1995 rules i SL 2006-246 2008 rules 2017 rules total area (sq ft) 1995 rules SL 2006-246 2008 rules 2017 rules -ib Offsite BUA (sqft) -+1995 rules SL 2008-246 2008 rules 2017 rules 11 Design storm (inches) 1995 rules SL 200B-246 2008 rules 2017 rules 12 Breakdown of now BUA: - Park NANAL— Sidewalk (sq ft) Roofs A).. Roadway (sq Futuree q ft) . ........ .... ..... .. Other, please specify in the comment box New infiltrating permeable pavement on subdivided lots (sq ft) 13 14 New infiltrating permeable pavement outside of Isubdivided lots (sq ft) 1Exisiling 11177 BUA that YAII remain (not subject to p.2rMJi:qinW sq ft 16 Existing BUA that is already permitteds. �ft -removed Existing BUAthatwill be (sq ft) 18 Percent BUA .19 Design volume of SCM.(c�ft._­ -2o Calculation method for design volume ADDITIONAL INFORMATION Please use this space to provide any additional 21 about the drainage area(s): --information LOW DENSITY_ DESIGN REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 02H .1003 1 i Is project below density thresholds set forth in the applicable stormwater rule? 2 Does project maximize dispersed flow and minimize channelization of flow? 3 Has the use of piping been minimized per. .1003(2)(c)? —.... ................- -- _...... 4 Side slopes of the vegetated conveyances (H:V) 5 Maximum velocity in the vegetated conveyances during the 10-year storm? — 6 Are curb outlet swales proposed? _ _ 7 Maximum longitudinal slope of curb outlet swale(s) _ 8 Bottom width of curb outlet swaie(s) (feet) 9 Maximum side slope of curb outlet swate(s) (H V) 16 Minimum length of curb outlet swaie(s) (feet) 11 Are treatment swales used instead of curb outlet swales? 12 Is stormwater released at the edge of the setback as dispersed flow? 13 Have stormwater outlets been designed to prevent downslope erosion? 14 Are variations to rule .1003 proposed? n ADDITIONAL INFORMATION Please use this space to provide any additional information about this low THE SWALES ARE CONVEYANCE SWALES SEF7 -i-leX4 P..e� Yes Yes Yes 4:1 No Yes Swale # Drainage Pervious BUA Q Slope Area (ac) area C (cfs) ac) (ac)I (fps) (fps) Flow depth (ft) 2 1. —6 I _1. 1 12 .......... 14 j 15 - 16 17 18 19 _ 20 _. 21 . o Q o v n IS oQo a o 0 0 0 0 a � 3 0 LL Rt rM. Lmrn " n m vi om0 @ 0 0 r+ ri 0 r-I r-I T--t o m Lit o 0 0 O 0 0 i LO Lo O an R* s7 mr q* 5h ¢t 7 Qo o 0 0 o aoa Uii o� _ e-i ei e-i r-I r-I N N N r-1 al O- O Ln Q N m O O O yN O 00 tD ri Gl M N N c I 1.1 cr co no0i Irr! rri "i Lrn ri � v U 0 0 0 0 C3 O O 0 O Ca c, m o o rn v O O N o o O O i m A7 � rl Q N-1 u' O O p r! OR In N N r o@ o 0 0 0 0 0 0 0 o ca m Q E l0 r-I f� O W r-I LO N N W v cp rl f` M N n Q1 1p lD N co O O N N Q m O O O O ca o Q r r N rr> et Ln w r� w Ol 0 a m 0 3 z Ln OC a 0 w W W U. a H O a O H CZ Cf 0 cc c W Q O 0 CA coa L CC w L a in c o � W � O W j m O W CC D DRY POND 1 Drainage area number , 1 - --� 2 Design volume of SCM (cu ft) GENERAL MDC FROM 02H .1050 Is the SCM sized to treat the SW from all surfaces at 3 build -out? IN 4 i Is the SCM located away from contaminated soils? ..... What the side slopes of the SCM (H:V)? Yes 5 3:1 -are Does the SCM have retaining walls, gabion walls or 6 ,other engineered side slopes? No Are the inlets, outlets, and receiving stream protected 7 ',from erosion (10-year storm)? Yes Is there an overflow or bypass for inflow volume in 8 exoess of the design volume? No - What is the method for dewatering the SCM for 9 maintenance? If applicable, will the SCM be cleaned out after Drawdown Orifice 10 construction? Yes Does the maintenance access comply with General 11 MDC (8)? Yes _ Does the drainage easement comply with General 12 MDC (9)? Yes _ Ifthe SCM is on a single_ family lot, does (will?) the 13 plat comply with General MDC (10)? — Is there an O&M Agreement that complies with 14 General MDC (11)? Yes Is there an O&M Plan that complies with General 15 MDC (12)? 16 Does the SCM follow the device specific MDC? _.. - Was the SCM designedby an NC licensed 17 professional? ! Yes DC yFROM 02H .1062 18 SHWT elevation (fmsl) 280.7 19 Elevation of the bottom of the dry pond (fmsl) 283 20 Distance from bottom to SHWT (feet) Elevation of the temporary pool during the design 2 ft 21 storm (feet) 22 Ponding depth of the design storm (feet)_ 6 ft� _.... -- Will the dry pond be uniformly graded to flow toward - 23 'the outlet? Yes 24 Is a low flow channel being provided? _ — Are the inlet(s) and outlet located in a manner that 25 'avoids short-circuRing? Yes III germs or baffles be provided to increase the flow 26 path? No What method of pretreatment will be provided? Grass area F27 26 _ Diameter of drawdown orifice (in) 15 In 29 , Drawdown time for the temporary pool (hours) 14 • Does the pond minimize impacts to the receiving 30 channel from the 1-yr, 24-hr storm? yes ... _. .. Is there a small permantent pool near the orifice to 31 prevent clogging? 32 Will the outlet be designed to prevent clogging? Yes _ Are the dam and embankment planted in non- 33 :clumping turf grass? Yes Species of turf that will be used on the dam ii4_7 Bermuda or 34 embankment centipede Vllih frees and shrubs be prevented fromgrowing on 35 the dam and embankment? Yes ADDITIONAL INFORMATION Please use this space to provide any additional j 36 information about the infiltration system(s): Dry Pond 1 4:07 PM 10/1/2020 B3747 - P 834 HARNETT COUNTY TAX ID # 039588 0006 10-18-2019 BY: TW stamps: l; y!j 6 . o to Prepared by M. Andrew Lucas -- mail to Grantee STATE OF NORTH CAROLINA } COUNTY OF HARNETT ) For Registration Kimberly S. Hargrove Register of Deeds Harnett County, NC Electronically Recorded 2019 Oct 18 02:15 PM NC Rev Stamp: $ 496.00 Book: 3747 Page:834 - 836 Fee: $ 26.00 Instrument Number: 2019015382 GENERAL WARRANTY DEED THIS DEED, made this f Vr day of _ Odv� , 2019, by and between OB THOMAS, LLC, a North Carolina Limited Liability Company, 1501 Crepe Myrtle Drive, Sanford, NC 27330 hereinafter called "GRANTOR" to ROSSER PITTMAN LAND DEVELOPMENT, LLC, a North Carolina limited liability company, PO Box 1310, Broadway, NC 27505, herein after called "GRANTEE"; W I T N E S S E T H, that the Grantor, in consideration of valuable considerations provided by the Grantee, the receipt of which is hereby acknowledged, has bargained and sold and by these presents does bargain, sell and convey unto the Grantee, all of Grantor's fee simple interest in that certain lot or parcel of land situated in Harnett County, North Carolina, more particularly described as follows: SEE "EXHIBIT A" ATTACHED HERETO AND INCORPORATED HEREIN. Being the same property conveyed to Grantor in Deed Book 3639, Page 662, Harnett County Registry. TO HAVE AND TO HOLD the aforesaid tract or parcel of land and all privileges and appurtenances thereunto belonging to the Grantee in fee simple. And the Grantor covenants with the Grantee, that Grantor is seized of said premises in fee simple, has the right to convey the same in fee simple; that title is marketable and free and clear of all encumbrances, and that Grantor will warrant and defend the title to the same, against the lawful claims of all persons submitted electronically by "Harrington Gilleland Winstead Feinde3 & Lucas, LLP" in compliance with North Carolina statutes governing recordable documents and the terms of the submitter agreement with the Harnett County Register of Deeds. B3747 - P 836 whomsoever, except for any exceptions as may be hereinafter stated: All such public utility easements or rights -of -way, if any, as may serve, cross, encroach upon, or otherwise affect the property herein conveyed; all such zoning ordinances and other governmental regulations, if any, as may apply to the property herein conveyed; all matters which would be revealed by a current and accurate survey of the property herein conveyed; restrictive covenants of record, if any This is not the primary residence of Grantor IN TESTIMONY WHEREOF, the Grantor has hereunto set his hand and seal, the day and year first above written. OB THOMAS, LLC r (SEAL) By: L;rr7 B. Thomas, Member/Manager STATE OF NORTH CAROLINA COUNTY OF LEE I, c�-d (a -T t+ ak V5 , the undersigned Notary Public of the county and state aforesaid, certify that Larry B. Thomas personally came before me this day and acknowledged that he is a member/manager of OB Thomas, LLC, a North Carolina limited liability company, and that by authority duly given and as the act of such entity, they signed the forgoing instrument in its name on its behalf as its act and deed. Witness my hand and Notarial stamp or seal, this l& day of CC-4dOX-A , 2019. „k1111llliHll1� LiAuiVaF, VJ6H� x��,�'p�AR j.`•4'�i Notary Public � 2 My Cornnnission Expires: ! ZZ PuB 'C�4 ''' �_CO% B3747 - P 836 EXHIBIT A BEING ALL OF that TRACT containing 43.93 acres, more or less, as shown on the map entitled, "Survey for ELVIS G. FAIRCLOTH", by Bennett Surveys, dated October 17, 2019, and recorded in Plat 2019-363, Harnett County Registry. a M o � a z m PLAT CAB.F',SLIDF - 224-8 rn CA m m NCSR # 1215 ROSSER PITMAN RD- 60' R/W 1050.52 mra. ++aur ! s o7•25•3e L6YCE STONE o1VISroN '^ p r PLAT CAUASLIOE - 75-o i 3 8� PAIIL 0.HINKLE _ B 937,m 37 +-.. 0,9p MILS TO NCSN 121. to PENNY ND. 9 HAL OWEN & ASSOCIATES, INC. SOIL & ENVIRONMENTAL SCIENTISTS P.O. Box 400, Lillington NC 27546-0400 Phone (910) 893-8743 / Fax (910) 893-3594 www.halowensoil.com 25 September 2020 Elvis Faircloth 5104 Cool Springs Rd Broadway, North Carolina 27505 Reference: Soil Scientist Investigation for Stormwater Management Fair Ridge Subdivision Dear Mr. Faircloth, A site investigation has been conducted for the above referenced property, located on the western side of Rosser Pittman Road (SR 1215) in Harnett County, North Carolina. The purpose of this investigation was to provide a general characterization of the soils in the area proposed for a stormwater infiltration device, including a determination of the depth to evidence of a seasonal high water table and estimation of the permeability of the various soil layers. In -situ hydraulic conductivity testing was not conducted. All soil characteristics were described in accordance with the USDA Field Book for Describing and Sampling Soils. This report represents my professional opinion as a Licensed Soil Scientist. A hand -powered auger boring was advanced in the area proposed for the infiltration device (Figure 1) to a depth of 60 inches below ground surface. Soil morphological characteristics indicating a seasonal high water table (SHWT) were observed at 54 inches below surface. Infiltration rates (permeability) range from 0.02 in/hr in the clay layer between 54 and 60 inches to as high as 10 in/11r in the sandy loam textured soils observed in the surface layer to 17 inches below surface. A soil profile description was collected at location #1 and is attached to this report. I appreciate the opportunity to provide this service and trust that you will feel free to call on me again in the future. If you have any questions or need additional information, please contact me at your convenience. �ID Salt SC, �l ` O W F �. Y� 1102 Q� Sincerely JWA--'-r� Hal Owen Licensed Soil Scientist Soil Science Investigations • Wetland Delineations, Permitting, and Consulting HAL OWEN & ASSOCIATES, INC. Soil Scientist Investigation For Stormwater Management Fair Ridge Subdivision 25 September 2020 Figure I c3i I Soil profile #1 Soil Science Investigations • Wetland Delineations, Permitting, and Consulting HAL OWEN & ASSOCIATES, INC. SOIL PROFILE DESCRIPTIONS FOR STORMWATER MANAGEMENT DEVICES PROJECT NAME:. Fair Ridge Subdivision _ _ _ _PROPOSED FACILITY: LOCATION OF SITE: Rosser Pittman Road COUNTY: Harnett EVALUATED BY: Hal Owen, NC Licensed Soil Scientist DATE EVALUATED: EVALUATION METHOD: Auger Boring ®, Pit ❑ PROFILE: I HORIZON DEPTH MATRIX MOTTLES TEXTURE STRICTURE CONSiS- TENCE PERMEABIL ITY INM NOTES A 0-17 1 OYR 6/3 LS GR VFR 10+ Btl 17-28 IOYR8/4 SL GR FR 6+ Bt2 28-39 10YR 5/6 7.5YR 518 c 2 SCL 2 M SBK FI 0.4 136 39-50 10YR 6/4 IOYR 7/3 f I 7.5YR6/8m2 SCL 2 M SBK FI 0A 13t4 50-54 variegated above and 10YR 7/2 SCL 1 M SBK F1 0.3 Bt5 54-60 variegated above and 10YR 7/1 C 0.02 AWT 36 in. SHWT 54 in. SLWT SLOPE DRAINAGE SOIL SERIES VEGETATION COMMENTS: Old fic;ld Soil Science Investigations • Wetland Delineations, Permitting, and Consulting HAL OWEN & ASSOCIATES, INC. LEGEND OF ABBREVIATIONS FOR SOIL PROFILE DESCRIPTIONS TEXTURE S - Sand LS - Loamy Sand SL - Sandy Loam L - Loam SCL - Sandy Clay Loam CL - Clay Loam SiL - Silt Loam Si Silt SiCL- Silt Clay Loam SC - Sandy Clay C - Clay SiC - Silty Clay O - Organic MOIST CONSISTENCE L - Loose VFR - Very Friable FR - Friable FI - Firm VFI - Very Firm EFI - Extremely Firm AWT — Apparent Water Table SHWT — Seasonal High Water Table SLWT — Seasonal Low Water Table MOTTLES f — few 1 - fine F - Faint c -- common 2 - medium D -Distinct m —many 3 - coarse P - Prominent STRUCTURE 0 - structureless I - weak 2 - moderate 3 - strong VF - very fine F - fine M - medium C - coarse VC - very coarse G - Single Grain M - Massive CR - Crumb GR - Granular SBK - Subangular Blocky ABK - Angular Blocky PL - Platy PR - Prismatic Soil Science Investigations • Wetland Delineations, Permitting, and Consulting 76 77 78 `�-350 n PERRY RD o ... l —r rjFt t` a _ � 3 R �.ryl FAIR RIDGE FARMS SUBDIVISION USGS MAP nR_V�g_,' LIMITED LIABILITY COMPANY ANNUAL REPORT 1012017 NAME OF LIMITED LIABILITY COMPANY: Rosser Pittman Land Development, LLC SECRETARY OF STATE ID NUMBER: 1906124 STATE OF FORMATION: NC REPORT FOR THE CALENDAR YEAR: 2020 SECTION A: REGISTERED AGENT'S INFORMATION 1. NAME OF REGISTERED AGENT: Faircloth, Clyde Stanley 2. SIGNATURE OF THE NEW REGISTERED AGENT: E - Filed Annual Report 1906124 CA202019701673 7/15/2020 12:00 SIGNATURE CONSTITUTES CONSENT TO THE APPOINTMENT 3. REGISTERED AGENT OFFICE STREET ADDRESS & COUNTY 4. REGISTERED AGENT OFFICE MAILING ADDRESS 11948 US 421 North Broadway. NC 27505 Lee Countv SECTION B: PRINCIPAL OFFICE INFORMATION PO Box 1310 Broadway, NC 27505 1. DESCRIPTION OF NATURE OF BUSINESS: Land Development 2. PRINCIPAL OFFICE PHONE NUMBER: (919) 258-0157 3. PRINCIPAL OFFICE EMAIL: Privacy Redaction 4. PRINCIPAL OFFICE STREET ADDRESS 11948 US 421 North 5. PRINCIPAL OFFICE MAILING ADDRESS PO Box 1310 Broadway, NC 27505 Broadway, NC 27505 6. Select one of the following if applicable. (Optional see Instructions) ❑ The company is a veteran -owned small business ❑ The company is a service -disabled veteran -owned small business SECTION C: COMPANY OFFICIALS (Enter additional company officials in Section E.) NAME: Clyde Stanley Faircloth , Jr. NAME: Elvis Gene Faithdoth i TITLE: Member TITLE: Member , ADDRESS: ADDRESS: 11948 US 421 North 5104 Cool Springs Rd Broadway, NC 27505 Broadway, NC 27505 NAME: TITLE: 09131V SECTION D: CERTIFICATION OF ANNUAL REPORT. Section D must be completed in its entirety by a person/business entity. Clyde Stanley Faircloth Jr. SIGNATURE Form must be signed by a Company Official listed under Section C of This form. 7/15/2020 DATE Clyde Stanley Faircloth Jr. Member Print or Type Name of Company Official Print or Type Title of Company Official This Annual Report has been fled electronically. MAIL TO: Secretary of State, Business Registration division, Post Office Box 29525, Raleigh, NC 27626-0525 F STORMWATER CALCULATIONS FOR FAIR RIDGE FARMS SUBDIVISION HARNETT COUNTY PREPARED BY: Ken Bright Associates, PLLC P.O. Box 553 Sanford, NC 27331 (919) 776-3444 kwbriaht@kenbriahtengineering.com September 3, 2020 PIPES Z LU a W a a !L. 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Runoff Curve Number (CN) Cover description Woods (Good) Paved Streets w/Curbs & Sewers Paved Lots Roofs & Driveways Paved Streets w/Curbs & Sewers Woods (Good) Small Grain - C&T (Good) Small Grain - C&T (Good) Small Grain - C&T (Good) CN (weighted): 65.0 Total Area: 43.925 Acre 2. Runoff Return Period: Rainfall, P: Runoff, Q: Runoff Volume: 10 YEAR 1.50 0.0307 0.1125 CN 70 98 98 98 55 70 78 70 Wed Sep 30 12:10:40 2020 By: Checked: Soil Group C C B B B B C in in Acre -Ft Date: 09/30/20 Date: Area(Acre) 3.200 0.071 0.060 0.394 17.195 18.136 2.892 1.977 Runoff Curve Number and Runoff Wed Sep 30 12:14:21 2020 Project: FAIR RIDGE FARMS By: Date: 09/30/20 Location: POST DEVELOPMENT Checked: Date: Developed 1. Runoff Curve Number (CN) Cover description CN Soil Group Area(Acre) Woods (Good) 70 C 2.764 Paved Streets w/ Open Ditches 92 C 0.220 Paved Streets w/ Open Ditches 89 B 1.742 Paved Lots Roofs & Driveways 98 C 0.475 Paved Lots Roofs & Driveways 98 B 3.887 Woods (Good) 55 B 10.014 Open Space -Good (>75% grass) 61 B 20.143 Open Space -Good (>75% grass) 74 C 2.704 Open Space -Good (>75% grass) 61 1.977 CN (weighted): 65.9 Total Area: 43.926 Acre 2. Runoff Return Period: 10 YEAR Rainfall, P: 1.50 in Runoff, Q: 0.0387 in Runoff Volume: 0.1417 Acre -Ft Graphical Peak Discharge Project: FAIR RIDGE FARMS By: Location: PRE DEVELOPMENT Checked: Present 1. Data: Drainage area: .................... A = 43.9260Acres Runoff Curve Number: ............. CN = 65 Time of Concentration: ........... Tc = 10.00 min Wed Sep 30 12:26:42 2020 Storm Type: ....................... = II Pond and swamp areas spread throughout watershed ............... = 0.00 percent of A 0.0000 Acres 2. Frequency ........................yr = 10 3. Rainfall,P(24-hour).............. in = 5.990 4. Initial abstraction, Ia............ = 1.0769 5. Compute Ia/P....................... = 0.1798 6. Unit peak discharge, qu...... csm/in = 817.960 7. Runoff,Q.........................in = 2.344 8. Pond & swap adjustment factor,...Fp = 1.00 9. Peak Discharge,gp...............cfs = 131.596 Date: 09/30/20 Date: Page 1 of 1 Graphical Peak Discharge Project: FAIR RIDGE FARMS By: Location: POST DEVELOPMENT Checked: Developed 1. Data: Drainage area: .................... A = 43.9260Acres Runoff Curve Number: ............. CN = 66 Time of Concentration: ........... Tc = 10.00 min Wed Sep 30 12:25:00 2020 Date: 09/30/20 Storm Type: ....................... = II Pond and swamp areas spread throughout watershed ............... = 0.00 percent of A 0.0000 Acres 2. Frequency ........................yr = 10 3. Rainfall,P(24-hour).............. in = 5.990 4. Initial abstraction, Ia............ = 1.0303 5. Compute Ia/P....................... = 0.1720 6. Unit peak discharge, qu...... csm/in = 821.340 7. Runoff,4.........................in = 2.433 8. Pond & swap adjustment factor,...Fp = 1.00 9. Peak Discharge,gp...............cfs = 137.142 Date: Page 1 of 1 POND VOLUME CALCULATION FAIR RIDGE FARMS TOTAL Area = 43.6 Ac P = 5.99 inches CN pre = 65 CN post = 66 Spre = 5.385 Spost = 5.152 Qpre = 2.3 in Qpost = 2.4 in Vol pre = 370,988.40 cft Vol post = 385,034.97 cft Volume increase= 14,046.57 cft Provide a pond to retain that volume 10 yr-24hr Depth of runoff TOTAL SITE PRE VS POST DEVELOPMEN T FLOW WITH POND Q PRE = 131 CFS Q POST = 137 CFS Difference 6 cfs POND 1 q pre = 21.28 Q discharge = 15.16 Reduce flow by = 6.12 cfs Pre -development flow is equal to post development flow Pond Design Report: POND-1-FAIR RIDGE FARMS Design Settings Runoff Method: SCS TR-20 Start Time(hr): 0.00 End Time(hr): 24.00 Time Increment(hr): 0.10 Rainfall Event Storm Type Storm Duration(hr) AMC TYPE II 24-HOUR 24.00 II Storm Scenarios Name Rain Depth(in) 1 YR- 3.05 10-YEAR 5.99 25-YEAR 6.44 50-YEAR 7.34 100-YEAR 7.68 Peak Runoff Summary Rain Event Existing Condition (cfs) Proposed Condition (cis) Pond Outflow (eft) 1 YR- 6.38 6.76 3.37 10-YEAR 21,29 21.86 8.86 25-YEAR 23.73 24.32 12.22 50-YEAR 28.66 29.27 19.49 100-YEAR 30.54 31.15 21.28 Pond Report Stage -Storage Table Elev(Ft) Storage(CF) Storage(CY) Starage(Acre-Ft) Area(SF) Area(Acre) 283.000 0.000 0.000 0.000 4770A32 0.110 294.000 5188.562 192.169 0.119 5606.692 0.129 285.000 11245.628 416.505 0.258 6507,440 0.149 286.000 18235.739 675.398 0.419 7472,782 0.172 287.000 26223.488 971.240 0.602 8502.716 0.195 287.500 30609.643 1133.690 0.703 9041,906 0.208 288 i 28 / m 28 / 28 284. Stage -Storage Curve - - 28 / 0 10000 20000 30000 40000 Storage (CF) Stage -Storage Curve 288 / 28 28 m ro / 2$ / 28 / Stage -Area Curve 2$ 4000 5000 6000 7000 8000 9000 10000 Storage (CF) Stage -Area Curve Outlet Structures 1: RISER - Drop Pipe Riser Top Elev: 286.00 ft Riser Base Elev: 283.00 ft Riser Diameter: 36.00 in Orifice Coefficient: 0.60 Weir Coefficient: 3.33 Cutvert Length: 50.00 ft Culvert Diameter: 24.00 in Culvert Invert In: 282.50 ft Culvert Frictcon Coefficient- 0.01 Culvert Entrance Loss Coefficient: 0.20 288. 28 2s m ro 2s 2s Stage -Discharge Curve 28 0 5 10 15 20 25 30 Discharge (CFS) Stage -Discharge Curve Scenarios Report - #1 Design Scenario: Proposed, 1 YR- Runoff Hydrograph = SCS Method Antecedent Moisture Condition = Type II Rainfall Distribution Type = TYPE It 24-HOUR Peak Discharge (0p) = 6,76 cfs Return Period =1 YR- Time to Peak = 12.10 hrs Time Increment = 0.10 hrs. Runoff Volume = 0.43 acre-ft Drainage Area = 5.20 ac Runoff Curve Number, CN = 75 Basin Slope = 0,00% Hydraulic length = 0,00 ft Tc Method = SCS Time of Concentration = 0.0 min Rainfail Depth = 3.05 in Storm Duration = 24.00 hr Unit Hydrograph = SCS Curvilinear Peak Rate Factor = 484 25 Time (hour) Hydrograph Scenarios Report - #1 Target Scenario: Existing, 1 YR- Runoff Hydrograph = SCS Method Antecedent Moisture Condition = Type it Rainfall Distribution Type = TYPE II 24-HOUR Peak Discharge (0p) = 6.38 cfs Return Period = i YR- Time to Peak = 12.10 hrs Time Increment = 0.10 hrs RunoffVolume = 0.41 acre-ft Drainage Area = 5.20 ac Runoff Curve Number, CN = 75 Basin Slope = 0.00% Hydraulic length = 0.00 ft Tc Method = SCS Time of Concentration = 0.0 min Rainfall Depth = 3.05 in Storm Duration = 24.00 hr Unit Hydrograph = SCS Curvilinear Peak Rate Factor = 484 7 U O LL Runoff Hydrograph - Target p _...._F10 15 20 25 Time (hour) Hydrograph Scenarios Report - #1 Routing Hyrograph Hydrograph Type Reservoir Peak Discharge = 3.37 cfs Storm frequency = 1 YR- Time to Peak = 3.37 hrs Time interval = 6.00 min Hyd. Volume: =18396 tuft Max. Elevation = 283.91 ft Max. Storage = 4704.76 cult N 3 0 LL 0 (Runoff Hydrograph - Design Routing Hydrograph - Design . _ .......... Runoff Hydrograph - Target Time (hour) Hydrograph 25 Scenarios Report - ##2 Design Scenario: Proposed, 10-YEAR Runoff Hydrograph = SCS Method Antecedent Moisture Condition = Type 11 Rainfall Distribution Type = TYPE II 24-HOUR Peak Discharge (Qp) = 21.86 cfs Return Period = 10-YEAR Time to Peak = 12.10 hrs Time Increment = 0.10 hrs. Runoff Volume = 1.42 acre-ft Drainage Area = 5.20 ac Runoff Curve Number, CN = 75 Basin Slope = 0.00% Hydraulic length = 0.00 ft Tc Method = SCS Time of Concentration = 0.0 min Rainfall Depth = 5.99 in Storm Duration = 24.00 hr Unit Hydrograph = SCS Curvilinear Peak Rate Factor = 484 U 3 0 LL Time (hour) Hydrograph 25 Scenarios Report - #2 Target Scenario: Existing, 'fib -YEAR Runoff Hydrograph = SCS Method Antecedent Moisture Condition = Type li Rainfall Distribution Type = TYPE II 24-HOUR Peak Discharge (Rp) = 21,29 cfs Return Period = 10-YEAR Time to Peak = 12.10 hrs Time Increment = 0.10 hrs Runoff Volume = 1.37 acre-ft Drainage Area = 5.20 ac Runoff Curve Number, CN = 75 Basin Slope = 0.00% Hydraulic length = 0.00 ft Tc Method = SCS Time of Concentration = 0.0 min Rainfall Depth = 5.99 in Storm Duration = 24.00 hr Unit Hydrograph = SCS Curvilinear Peak Rate Factor = 4&4 25�Runoff Hydrograph - Target 15.......... . _... _ 10 15 20 25 Time (hour) Hydrograph Scenarios Report - #2 Routing Hyrograph Hydrograph Type Reservoir Peak Discharge = 8.86 cfs Storm frequency = 10-YEAR Time to Peak = 8.86 hrs Time interval = 6.00 min Hyd. Volume: = 60879 cult Max. Elevation = 265.88 R Max. Storage = 17385.75 tuft Runoff Hydrograph - Design Routing Hydrograph - Design j 1Runoff Hydrograph -Target 0 5 10 15 20 25 Time (hour) Hydrograph Scenarios Report - #3 Design Scenario: Proposed, 25-YEAR Runoff Hydrograph = SCS Method Antecedent Moisture Condition = Type II Rainfall Distribution Type = TYPE II 24-HOUR Peak Discharge (0p) = 24.32 cfs Return Period = 25-YEAR Time to Peak = 12.10 hrs Time Increment = 0.10 hrs Runoff Volume = 1.58 acre-ft Drainage Area = 5.20 ac Runoff Curve Number, CN = 75 Basin Slope = 0.00% Hydraulic length = 0.00 ft Tc Method = SCS Time of Concentration = 0.0 min Rainfall Depth = 6.44 in Storrs Duration = 24.00 hr Unit Hydrograph = SCS Curvilinear Peak Rate Factor = 484 25 Runoff Hydrograph - Design 20 �I _ 15 3 0 u. 10 0 5 10 15 20 25 Time (hour) Hydrograph Scenarios Report - #3 Target Scenario: Existing, 25-YEAR Runoff Hydrograph = SCS Method Antecedent Moisture Condition = Type II Rainfall Distribution Type = TYPE II 24-HOUR Peak Discharge (Qp) = 23.73 cfs Return Period = 25-YEAR Time to Peak = 12.10 hrs Time Increment = 0.10 hrs Runoff Volume = 1.54 acre-ft Drainage Area = 5.20 ac Runoff Curve Number, CN = 75 Basin Slope = 0.00% Hydraulic length = 0.00 ft Tc Method = SCS Time of Concentration = 0.0 min Rainfall Depth = 6.44 in Storm Duration = 24.00 hr Unit Hydrograph = SCS Curvilinear Peak Rate Factor = 484 Runoff Hydrograph - Target 10 15 20 25 Time (hour) Hydrograph Scenarios Report - #3 Routing Hyrograph Hydrograph Type Reservoir Peak Discharge = 12.22 cfs Storm frequency = 26-YEAR Time to Peak = 12.22 hrs Time interval = 6.00 min Hyd. Volume: = 68092 tuft Max. Elevation = 286.13 ft Max. Storage = 19273.68 tuft 25 Runoff Hydrograph - Design Routing Hydrograph - Design 20 Runoff Hydrograph - Target N U 15. II 3 0 LL 10' 0 _ 0 5 10 15 20 25 Time (hour) Hydrograph Scenarios Report - #4 Design Scenario: Proposed, 50-YEAR Runoff Hydrograph = SCS Method Antecedent Moisture Condition = Type II Rainfall Distribution Type = TYPE II 24-HOUR Peak Discharge (Qp) = 29.27 cts Return Period = 50-YEAR Time to Peak = 12.10 hrs Time Increment = 0.10 hrs Runoff Volume = 1.92 acre-ft Drainage Area = 5.20 ac Runoff Curve Number, CN = 75 Basin Slope = 0.00% Hydraulic length = 0.00 ft Tc Method = SCS Time of Concentration = 0.0 min Rainfall Depth = 7.34 in Storm Duration = 24.00 hr Unit Hydrograph - SCS Curvilinear Peak Rate Factor = 484 30 Runoff Hydrograph - Design -- OK w 3 0 u- 1 I� 0 d4i Time (hour) Hydrograph 5 25 Scenarios Report - #4 Target Scenario: Existing, 50-YEAR Runoff Hydrograph = SCS Method Antecedent Moisture Condition = Type II Rainfall Distribution Type = TYPE 11 24-HOUR Peak Discharge (Qp) = 28.66 cfs Return Period = 50-YEAR Time to Peak = 12.10 hrs Time Increment = 0,10 hrs Runoff Volume = 1.88 acre-ft Drainage Area = 5.20 ac Runoff Curve Number, CN = 75 Basin Slope = 0.00% Hydraulic length = 0.00 ft Tc Method = SCS Time of Concentration = 0.0 min Rainfall Depth = 7.34 in Storm Duration = 24.00 hr Unit Hydrograph = SCS Curvilinear Peak Rate Factor = 484 Runoff Hydrograph - Target 0 --- _.... - ..._..... 10 15 20 25 Time (hour) Hydrograph Scenarios Report - #4 Routing Hyrograph Hydrograph Type Reservoir Peak Discharge = 19.49 cfs Storm frequency = 50-YEAR Time to Peak = 19.49 hrs Time interval = 6.00 min Hyd. Volume: = 82839 cult Max. Elevation = 286.43 ft Max. Storage = 21690.65 cult 30 (Runoff Hydrograph - Design Routing Hydrograph - Design 2 , Runoff Hydrograph - Target 20 i U 3 t: 15 10 j 1 1 0 5 10 15 20 25 Time (hour) Hydrograph Scenarios Report - #5 Design Scenario: Proposed, 100-YEAR Runoff Hydrograph = SCS Method Antecedent Moisture Condition = Type II Rainfall Distribution Type = TYPE II 24-HOUR Peak Discharge (Qp) = 31.15 cis Return Period = 100-YEAR Time to Peak = 12.10 hrs Time Increment = 0.10 hrs RunoffVolume = 2.06 acre-ft Drainage Area = 5.20 ac Runoff Curve Number, CN = 75 Basin Slope = 0.00% Hydraulic length = 0.00 ft Tc Method = SCS Time of Concentration = 0.0 min Rainfall Depth = 7.68 in Storm Duration = 24.00 hr Unit Hydrograph = SCS Curvilinear Peak Rate Factor = 484 35 Time (hour) Hydrograph 25 Scenarios Report - #5 Target Scenario: Existing, 100-YEAR Runoff Hydrograph = SCS Method Antecedent Moisture Condition = Type II Rainfall Distribution Type = TYPE II 24-HOUR Peals Discharge (Qp) = 30.54 cfs Return Period = 100-YEAR Time to Peak = 12.10 hrs Time Increment = 0.10 hrs Runoff Volume = 2.01 acre-ft Drainage Area = 5.20 ac Runoff Curve Number, CN = 75 Basin Slope = 0.00% Hydraulic length = 0.00 ft Tc Method = SCS Time of Concentration = 0.0 min Rainfall Depth = 7.68 in Storm Duration = 24.00 hr Unit Hydrograph = SCS Curvilinear Peak Rate Factor = 484 Runoff Hydrograph - Target 0.....------ ---....-—__..!5......_..__ 10 15 20 25 Time (hour) Hydrograph Scenarios Report - #5 Routing Hyrograph Hydrograph Type Reservoir Peak Discharge = 21.28 cfs Stone frequency = 100-YEAR Time to Peak = 21.28 hrs Time interval = 6.00 min Hyd. Volume: = 88505 cult Max. Elevation = 286.52 ft Max. Storage = 22367.27 cult Runoff Hydrograph - Design Routing Hydrograph - Design - -- - Runoff Hydrograph - Target U � 20 3 o U. 15 101 0 5 10 15 20 25 Time (hour) Hydrograph POND VOLUME CALCULATION FAIR RIDGE FARMS TOTAL Area = 43.6 Ac P = 5.99 inches CN pre = 65 CN post = 66 Spre = 5.385 Spost = 5.152 Qpre = 2.3 in Qpost = 2.4 in Vol pre = 370,988.40 cft Vol post = 385,034.97 cft Volume increase= 14,046.57 cft 717 Provide a pond to retain that volume 10 yr-24hr Depth of runoff TOTAL SITE PRE VS POST DEVELOPMEN T FLOW WITH POND Q PRE = 131 CFS Q POST = 137 CFS Difference 6 cfs POND 1 q pre = 21.28 Q discharge = 15.16 Reduce flow by = 6.12 cfs Pre -development flow is equal to post development flow