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HomeMy WebLinkAboutSW8000529_HISTORICAL FILE_20160401STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW QG�a�I DOC TYPE ❑CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE- YYYYMMDD STATE OF NORTH CAROLINA Department of Environmental and Natural Resources 127 Cardinal Drive Extension Wihningtan, North Carolina 28405 (910) 796-7215 FILE ACCESS RECORD SECTION011 �!r,, TRWATE NAME -- REPRESENTING /7C`.•-- Guidelines for Access: The staff of Wilmington Regional Office is dedicated to making public records in our custody readily available to the public for review and copying. We also have the responsibility to the public to safeguard these records and to carry out our day-to-day program obligations. Please read carefully the following guidelines sig g the :Form 1. Due to the large public deman d for file access, we request that yoii call at least a day in advance to schedule an appointment to review the files. Appointments will be scheduled between 9.00am and 3:00 m. Viewing tame ends at 4:45m An one arriving wiitkoui an aAAointaaent ma y view the files to the extent that time and staff supervision is available 2, You must specify files you want to review b faeili . name. The number of files that you may review at one time will be limited to five. 3. You may make copies of a file when the copier is not in use by the staff and if time permits. Cost per copy is $.05 cents. Payment may be matte by check money order, or cash at the rece tr_p _on desk. Copies totaling $5.00 or more can be invoiced for your convenience 4. P'3LES MUST BE KEPT IN ORDER YOU FOUND THEM. • Files may not be taken from the office, To remove, alter, deface, mutilate, or destroy material in one of -these files is a misdemeanor for which you can be fined up to $500M. No briefcases, large totes, etc. are permitter) inihe file review area. 5. In accordance with General Statue 25-3-512, a $25.00 processing fee will be charged and collected. for checks on which payment has been refused. FACILITY NA JE COUNTY 117 3. 4. .A ►�+�� ��. 1 q Jan, Signature and Name of PirnVBusiness Date Piense attach a busb2wy card to this form COPSES MADE PAID S:Admin-file access r 1:0o TM Time In NVOICE :ao Qom, Time Out Am NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor November 19, 2009 Mr. Buddy Jackson, President Jackson Investments, Inc. P. 0. Box 10940 Wilmington, NC 28404-0940 Division of Water Quality Coleen H. Sullins Director Subject: Session Law 2009-406 -- Permit Extension Stormwater Permit #SW8 000529 High Density — Ponds Edge Office Park New Hanover County Dear Mr. Jackson: Dee Freeman Secretary On August 5, 2009, the Governor signed Session Law 2009-406. This law impacts any development approval issued by the Division of Water Quality under Article 21 of Chapter 143 of the General Statutes, which is current and valid at any point between January 1, 2008, and December 31, 2010. The law extends the effective period of any stormwater permit that is set to expire during this time frame to 3 years from its current expiration date. Accordingly, Stormwater Permit # SW8 000529, which was set to expire on August 25, 2010, is now in effect until August 25, 2013. Please resubmit the renewal application and fee at least 180 days prior to August 25, 2013, which would be February 25, 2013. A copy of the Renewal Application can be obtained from the following website: http://h2o.enr.state.nc.us/su/bmp forms.htm. If you have any questions, please contact the Division of Water Quality in the Wilmington Regional Office at 910-796-7215. Sincerely, Georgette Scott Stormwater Supervisor Division of Water Quality S:IWQSISTORMWATERIRENEWAL1SL2009-4061000529.nov09 cc: Wilmington Regional Office Central Files 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Ralegh, North Carolina 27604 One Phone: 919-807-63001 FAX: 919-807-64921Customer Service 1-877-623-6748 NorthCarolina Internet: www.ncwalerquality.org '}�'aturall An Equal Opportunity 1 Atfirmalive Action Employer �/bi !✓� State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office James B. Hunt, Jr., Governor Bill Holman, Secretary Division of Water Quality June 27, 2000 Mr. Buddy Jackson, President Jackson Investments, Inc. PO Box 10940 Wilmington, NC 28404 r w i4 '�� "�: ��-�,• :*;:ter �� x Subject: ACKNOWLEDGMENT OF RECEIPT AND REQUEST FOR ADDITIONAL INFORMATION Stormwater Project No. SW8 000529 Ponds Edge Office Park New Hanover County Dear Mr. Jackson: The Wilmington Regional Office received a Stormwater Management Permit Application for Ponds Edge Office Park on May 15, 2000. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: V1. Delineate all wetlands on site, disturbed or undisturbed, or note on the plans that none exist. V When was the existing development done? Please note that phased development is ,try c prohibited, and will subject the existing development to the stormwater rules. The Recional Sol] Scientist disagrees with the 60" per hour infiltration rate, and requests that a constant ]lead test be performed.. The 60" per hour rate is reserved for course beach sartd, not sand with underlying black silty sands . Similar infiltration basins permitted in the area have used a rate of about 2"-3" per hour. 4. The rules require infiltration systems to be offline systems, ie., they must bypass the excess runoff prior to entering the system. Please provide a suitable bypass structure to accomplish this and detail on the plans. S. Please provide the parking lot, driveway and sidewalk dimensions. ✓ 6. Please provide a more detailed vicinity map. Include the approximate distance to the project from Alexander Road, and the direction to Wihlnington. 7. I am unable to duplicate the 1,837 ft3 of volume provided. Please provide sufficient surface areas in the basin to justify this amount. Based on a 5:1 side slope, and using the radii provided, I calculate a surface area of 1,194 ft2 at elevation 34.25, for a volume of 1,403 W. 8. By using Schueler's volume calculation method, the minimum required volume is reduced to 1,481 ft3, which may help resolve item 97 above. As proposed. the basin volume is deficient. 127 Cardinal Dr. Ext., wilmin-ton, north Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Employer 50` . recycled/10% post -consumer paper Mr. Jackson June 27. 2000 Stormxvater Project No. SW8 000529 -------------------------------------------- Please note that this request for additional information is in response to a preliminary review. The requested information should be received by this Office prior to July 27, 2000. or the application krill be returned as incomplete. The return of a project will necessitate resubmittal of all required items, includin�c the application fee. If you need additional time to submit the information, please mail or fax your request for a time exrension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days frorn the receipt of a completed application to issue the permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation ofNCGS 143-215.1 and is subject to enforcement action Pursuant to NCGS 143-215.6A. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 395-3900. Sincerely, Linda Lewis Environmental Engineer R,SS!a l: S:1'VJQSISTOR,1v1WAT\ADDINF'01000529.JUN cc: Linda Lewis Phil Tripp, P.E. 127 Cardinal Dr. Ext., WiLnington, North Carolina 2840.5 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Emplover 50% recvclecl/t01/ post -consumer paper 7127i00 Ponds Edge Office Park 00015 CDC 10-year Storm WATERSHED DATA Total DrainageArea . ft. Iacres 16,553 1 0.38 Impervious Area Land Use sq. ft. acres buildings 3,000 0.07 parkinglasphatt 9,240 0.21 concrete 0 0.00 Total 12,240 0,28 INFILTRATION SYSTEM: % impervious = 0.739 = 73.9% say 74.0% CPRE = 0.25 CPOST = (% Imp.)(.95)+(1-% imp.)(.25) 0.77 12 = 5.06 inlhr 110 = 6,30 inlhr l25 = 7.13 Whr Volume of firstinch of runoff = (impervious area)1.5/12 +(total area - impervious area) 9.502 x .25 V- 1,664.78 cu-ft Required basin storage: Vr= 1,664.78 cu-ft Volume provided: Vp= 2.178,00 cu-ft bottom elev: 22,75 1,176 sf top elev: 24.25 1,728 sf DRAWDOWN RATE: RATE OF INFILTRATION 3 INIHR (60 inlhr FROM SOILS REPORT) DEPTH OF BASIN: 18 IN DRAW DOWN RATE: 18 IN IJZINIHR C r11111►►,i RO ..... 9,,l� RECIEUVIED SEAL 17374 = Jul 27 2000 `��; '�.,, GREV X\ DWQ PRoa# (uS SZ9 rrlill++ ' "1•Z�•a0 State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office James B. Hunt, Jr., Governor Bill Holman, Secretary Division of Water Quality July !3, 2000 Mr. Buddy Jackson, President Jackson Investments 7+ 1fn n P? U''ox xtll Wilmington; NC 28404 Subject: Phased Development at Pond's Edge Office Park Stormwater Project No. SW8 000529 New Hanover County Dear Mr. Jackson: - The State Stormwater group of the Division of Water Quality considered the phased development question for this site at its recent meeting. Ms. Beth Easley, with New Hanover County's Sedimentation Erosion Control program; informed us that the adjacent property was recently purchased by you, therefore, the second phase of development could not reasonably have been foreseen. As a result; the Division will require a stormwater permit for the second phase of the development only. Runoff from the first phase will not be required to be treated, however, if it will flow into the proposed infiltration area for the second phase, it must be accounted for in the system des]"Pn. If you have any questions, please do not hesitate to call me at (910) 395-3900. Sincerely,, I L.'Wis _ reviit>t1�1it;D.ttlf l•,c�;,l-per RSSlarl: S:1WQSISTORMWATILETTERS1000529.JUL cc: Linda Lewis Beth Easley Phil Tripp, P.E. 127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Gyual opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper State Stormwater Management Systems Permit No. SW8 000529 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 Jackson Investments, Inc. Ponds Edge Office Park 7735 Market Street, New Hanover County FOR THE construction, operation and maintenance of an infiltration basin in compliance with the provisions of 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 25, 2010 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described on page 3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from 12,240 square feet of impervious area. 3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. 2 State Stormwater Management Systems Permit No. SW8 000529 Project Name: u Permit Number: Location: Applicant Mailing Address: Application Date: Name of Receiving Stream/Index #: Classification of Water Body: [fs . If Class SA, chloride sampling results: Pond Depth, feet: Bottom Elevation, FMSL: Drainage Area, acres: Total Impervious Surfaces, ft2: Offsite Area entering Pond, ft2: Surface Area @Bottom, ft2: Surface Area @Storage, ft2: 'i 4¢ Required Storage Volume, ft': Provided Storage Volume, W: Temporary Storage Elevation, SFMSL: P Y g }' Controlling Orifice: Type of Soil: Expected Infiltration Rate: k r; Seasonal High Water Table Elevation: 1a3V Drawdown Time: ,IVISION OF WATER QUALITY 110JECT DESIGN DATA SHEET Ponds Edge Office Park SW8 000529 New Hanover County Mr. Buddy Jackson, President Jackson Investments, Inc. PO Box 10940 Wilmington, NC 28404-0940 August 25, 2000 Pages Creek / (CFR 18-87-22) "SA" n/a 1.5 32.75 16,563 ft2 12,240 None, per Engineer 1,176 1,728 1,481 2,178 34.25 8" bypass pipe to DOT ditch Leon 3" per hour 29 FMSL 6 hours 3 State Stormwater Management Systems Permit No. SW8 000529 11. SCHEDULE OF COMPLIANCE I . The stormwater management system shall be constructed in it's entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. The permittee shall at all times 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. e. Mowing and revegetation of side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans and specifications. F Debris removal and unclogging of outlet structure, orifice device and catch basins and piping. g. Access to the outlet structure must be available at all times. 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. Decorative spray fountains will not be allowed in the stormwater treatment system. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 7. Upon completion of construction, prior to issuance of 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. 8. 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. 9. The following items will require a modification to the permit: a. Any revision to the approved plans, regardless of size. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area. C. Further subdivision, acquisition, or sale 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. 10. The Director may determine that other revisions to the project should require a modification to the permit. 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. 4 State Stormwater Management Systems Permit No. SW8 000529 12. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale of any portion of the property. 13. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable built -upon area. 14. The runoff from all built -upon area on the project must be directed into the permitted stormwater control system. 15, 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. 16. The permittee shall notify the Division of any mailing address changes within 30 days. III. GENERAL CONDITIONS 1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality accompanied by an application fee, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. ' 2. 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. 3. 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) which have jurisdiction. 4. 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. 5. The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all components of the permitted stormwater management facility. 6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. 7. 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. Permit issued this the 25th day of August, 2000. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION r Kerr T. Stevens, Director Y , 6 Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 000529 5 State Stormwater Management Systems 'y Permit No. SW8 000529 Ponds Edge Office Park Stormwater Permit No. SW8 000529 New Hanover County Designer's Certification IA 1, 1, , as a duly registered in the State of North Carolina having been authorized to observe (periodicallylweeklylfull time) the construction of the project, ect) Y•�• 1 for (Proj ect Owner) hereby state that, to the best of my abilities, due care s• and diligence was used in the observation of the project construction such that the construction was observed to be = built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. r; Noted deviations from approved plans and specification: SEAL Signature Registration Number Date !I :,. 6 State Stormwater Management Systems Permit No. SW8 000529 IN Certification Requirements: I . The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. The outlet/bypass structure elevations are per the approved plan. 5. The outlet structure is located per the approved plans. 6. Trash rack is provided on the outlet/bypass structure. 7. All slopes are grassed with permanent vegetation. 8. Vegetated slopes are no steeper than 3:1. 9. The inlets are located per the approved plans and do not cause short-circuiting of the system. 10. The permitted amounts of surface area and/or volume have been provided. 11. Required drawdown devices are correctly sized per the approved plans. 12. All required design depths are provided. 13. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 14. The overall dimensions of the system, as shown on the approved plans, are provided. cc: NCDENR-DWQ Regional Office Tony Roberts, New Hanover County Building Inspector 7 r s'5 . T TRIPP ENGYNEERTNG, P.C. 419 Chestnut Street Wilmington, North Carolina 23401 910/763-5100 Fax 910/763-5631 L.E rER OF T kNSMITTAL. Job No. To: NC Q(V�I Date: -- C)8 2q- _-Q0 Attention: 3V Subject: �rTr�IZS ��C�G�.�1C�tG �fC FAX TRANSMITTAL: NUMBER OF PAGES INCLUDES COVER I am sending you: ( ) ATTACHED ( ) UNDER SEPERATE COVER ( nnts ( ) Tracings ( ) Copy of letter ( ) Specifications ( ) Other These are transmitted as checked below: ( ) For Approval O For Your Use ( ) Sign & Return O Review Remarks: - � 15 42tt IP(E)P— ,_ Zf --(D CD cc: Signe / P. 1 FILE 1,10DE Y295- ME1,1CiRY TX a COMMUNICATION RESULT REPORT ( AUG.23.2000 4:59PM ) TTI NCDENR WIRO RESULT PAGE OPTION ADDRESS (GROUP) - ----------------- --------- OK P. 1/1 ------_--9-7&D 631 REASON FOP. -ERROR E-2) BUSY E--1) HANG UP OR LINE FAIL E-4) NO FACSIMILE CONNECTION E-3) 110 ANSWER State ofNortli Carolina Departrrent of Environment and Natural Resources Division of Water Quality Wilmington Regional Office James B.14tuit, Governor FAX COVER SHEET Bill Holman, Secretary Date: August 23, 2000 No. of Pages: 1 To: Charles Cazier From: Linda Lewis Company: Tripp Engineering Water Quality Section - Stormwater FAX #: 763-5631 FAX #: 910-350-2004 Phone #: 910-395-3900 DWQ Stormwater Project #SR'S 000529 Project Name: Ponds Edge Office Park MESSAGE: Dear Charlie: Please label the curb inlet and manhole combination as the bypass structure on sheet C 1. Please relabel the "Typical Curb Inlet Detail" as the "Bypass Structure Detail"�,,, Ale + CYZ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality Wilmington Regional Office ,e James B'.1-lunt, Governor Date: August 23, 2000 To: Charles Cazier Company: Tripp Engineering FAX 9: 763-5631 Bill Holman, Secretary FAX COVER SHEET No. of Pages: 1 From: Linda Lewis Water Quality Section - Stormwater FAX #: 910-350-2004 Phone #: 910-395-3900 DWQ Stormwater Project #SW8 000529 Project Name: Ponds Edge Office Park MESSAGE: Dear Charlie: Please label the curb inlet and manhole combination as the bypass structure on sheet C 1. Please relabel the "Typical Curb Inlet Detail" as the "Bypass Structure Detail"(,, cz) S:1WQSISTORMWATILETTERS1000529.AUG 127 Cardinal Drive Extension, Wilmington, NC 28405-3845 Telephone (910) 395-3900 FAX (910) 350-2004 -An Equal Opportunity Affirmative Action Employer TRIPP ENGINEERING, P.C. 419 Chestnut Street Wilmington, North Carolina 28401 Phone: (910) 763-5100 - FAX: O Q126. July 26, 2000 NCDENR Division of Environmental Management Water Quality Section 127 Cardinal Drive Wilmington, NC 28405-3845 Attn: Ms. Linda Lewis Re: Ponds Edge Office Park SW8 000529 New Hanover County, NC TE 00015 Dear Linda: JUL 2 7 zaoo 1 In response to your correspondence dated June 27, 2000, we offer the following: 1. Note stating no wetlands exist on site has been added. 2. This statement was cleared upon your last correspondence. 3. We have revised our calculations to use the 3" per hour infiltration rate. 4. An offline bypass has been added. 5. Dimensions have been added. 6. The distance from the center line of Alexander Road shown on the survey boundary has been added to the vicinity map. 7. The slope has been revised to 3:1. New calculations, dimensions and volumes have been provided. 8. Revised calculations meeting the requirements are provided. Please review for approval and contact us with any questions or comments. Thank you. Sincerely, Tripp Engineering, P.C. Charles D. Cazier, E.I. CDC:dcb Enc. TRIPP ENGINEERING, P.C. 419 Chestnut Street Wilmington, North Carolina 28401 REc84 Phone: (910) 763-5100 • FAX: (910) 763-563 MAY 1 5 2000 May 11, 2000 NCDENR Division of Environmental Management Water Quality Section 127 Cardinal Drive Wilmington, NC 28405-3845 Attn: Ms. Linda Lewis Re: Ponds Edge Office Park New Hanover County, NC TE 00015 Dear Linda: BY NF6 Enclosed please find two (2) sets of plans, one (1) signed original and one (1) copy of the application form with narrative, one (1) infiltration basin supplement, two (2) sets of signed sealed calculations and one check for the application fee. Please review for approval and contact us with any questions or comments. Thank you. Sincerely, Tripp Engineering, P.C. Charles D. Cazier, E.I. CDC:dcb Enc. May 11, 2000 Stormwater Narrative PONDS EDGE OFFICE PARK New Hanover County, NC TE 00015 Ponds Edge Office Park is a 0.99 acre site existing on Market street which is currently treated by sheet flow and an adjacent existing ditch. The owner of this property has recently purchased an adjacent tract of 0.49 acre, making the total tract area 1.48 acres. Drainage for the existing site will remain as is, and the proposed site will provide an open infiltration basin to accommodate the 1.5" of runoff.