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HomeMy WebLinkAboutSW7060612_HISTORICAL FILE_20060711STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE`` )(i) O l ( / YYYYM M DD s r�xtsl„^ 7B� OFFICE USE ONLY J Daly. 12 cUe Fee Paid Permit Number J V cuyu S1617zy itNAPR0 State of North Carolina 5W>4c-K 7/1 /N) Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original I, GENERAL INFORMATION name (specify the name of the corporation, individual, etc. who owns the project): 2. Prinnt, t/Ownerr//Signing Official's name and title (person legally responsible for facility and compliance): I ice 3. Mailing Address for person listed in item 2 above: SL�i N�FLTFI ��e�7SC�Jt-2��, �5 ITc ��O CityC_gee.%le _0 State: t,�. L- Zip: Z�NU l Telephone Number: L3'� (� ) Z L 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): _/" i cCAF—T1ly Cu 1i 2T 3 5. Location of Project (street address): City: NEB¢-rJ County: G. Directions to project (from nearest major intersc tion): UIE 7. Latitude: Longitude: of project 8. Contacl per on who can answer questions about the project: Name:_s+R)' Telephone Number: (336, ) ZIO' gLgZ It. PERMIT INFORMATION: 1. Specify whether project is (check one): !ram New Renewal Modification Form SWU-101 Version3.99 Page I of 2. If this application is beings bmitted as the result of a renewal or, modification to an existing permit, list the existing permit number 1" IA and its issue date (if known) 3. Specify the type of project (check one): Low Density _High Density Redevelop General Permit Other 4. Additional Project Requirements (check applicable blanks): _CAMA Major Sedimentation/Erosion Control _404/401 Permit _NPDES Stormwateer® Information on required state permits can be obtained by contacting the Customer Servic9 or"'a F1,1V E® 1-877-623-6748. k!G 2 4 2006 III. PROJECT INFORMATION �p/� y WAR Y H `�d' tl YP1f't® 1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative (nne to twn napes) descrihing stnrmwater management for [he oroiect . 2. Stormwater runoff from this project drains to the �Ej&E' River basin. 3. Total Project Area: Z• I z y acres 4. Project Built Upon Area: % 5. How many drainage areas does the project have? Z 6. 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. Basin Information * Drainage Area 1. Drainage Area 2 Receiving Stream Name t Receiving Stream Class C• , N\sk - C_S(j' SLJ Drainage Area _S3 — QC_ Existing Impervious* Area CS). CC-7 /5,�__ C�:) . OO Az — Proposed hmpervious*Area _07� QC_ C-::> •C-)C:) AC_ % Impervious* Area (total) /u 6p 3 .41 ` CD o Impervious* Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings b 6 , bZ- SF - On -site Streets — On -site Parking On -site Sidewalks SF - Other on -site _ Off -site Total: 41Z U r Total: " Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas. etc I zx_- a r yeti.-, teAc 1 0 - FormSWU-101 Version3.99 Page 2 of 4 CZ. I z- \ %vTad�) How was the off -site impervious area listed above derived? IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS The following italicized 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. 1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number as issued by the Division of Water Quality. These covenants may not be changed or deleted without the consent of the State. 2. No torte than square feet of any lot shall be covered by structures or impervious materials. Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or the water surface of swinuning pools. 3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings. 4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to construction. 5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted. By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, 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 cannotbe changed or deleted without concurrence from the Slate, 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 submitted 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. Form SWU-102 Wet DetentionBasin Supplement Form SWU-103 Infiltration Basin Supplement Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Form SWU-106 Off -Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-101 Version 3.99 Page 3 of 4 rI 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 Regional Office. 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 / UZ) One copy of the applicable Supplement Form(s) for each BMP Mio • Permit application processing fee of $420 (payable to NCDENR) N'l WJ • Detailed narrative description of stormwater treatment/management • Two copies of plans and specifications, including: - 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) VIL 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. (- Designated agent (individual or firm): I20 tP- / Mailing Address: ` &D7 —C �— j--> City:�NSC{o2a tJ • C . State: 1'�, C. Zip: Phone: () & & — E 50 S2 Fax: ( 53C� ) Z/ F� ^ ( O VIIl. APPLICANT'S CERTIFICATION I, (print or type name of person listed in General Information, Item 2) _&6J,= C_ . & r_qr%c�, 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 15A Form SWU-101 Version 3.99 Page 4 of 4 Date: ��oc' MAR 2 8 2007 wwa 'I Y Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources March 26, 2007 Alan W. Klimek, P.E. Director Division of Water Quality McCarthy Court III, LLC W V [`_7 r Attn: Mike Bateman ; 300 North Greene Street, Suite 1000 APR Grebnsboro, NC 27401 nQA o Subject: Stormwater Review SW7060612 Modification'9Y�� McCarthy Court 3 Craven County Dear Mr. Bateman: This office received a Coastal Stormwater permit application and plans for the subject project on March 2, 2007. A preliminary review of the project indicates that before a State Stormwater permit can be issued the following additional information is needed. ✓fease. Plexplain who owns thecAden Properly.If McCarthy CourFID, LLC is the Owner, than this permit SW7060612 has to be Modified to include this additional runoff, and detailed drawing of this property with stormwater collection system and all other required items needs to be shown. If the owners is somebody other than McCarthy Court, the Modification to this permit is still /required, but offsite property will need separate Offsite SW permit also. ✓2. Please revise the application to show the full name of the applicant (LLC 7) — Section 1, L, as well as provide the owners title — Section 1.2.. ✓3. The Stormwater Management Permit Application Form shows Impervious Area of the Drainage area 3 to be 25,614 s.f. (or 0.588 acres as I calculated) while 0.67 acres was shown on application. ✓ 4. SA/DA ratio on sheet C2.1 RI is 5.8152, while the supplement shows SA/DA to be 5.30 — Please explain. CO 5ren t ; V< Sheet C1.3 RI —Move the berm between forebay and Main pond to show 20% forebay to main pond ratio more accurately.v "b/. Wet Detention Basin Supplement — On Required items Check List initial items d, e, and i. 7. Please delineate the Drainage Areas . Revise the Stormwater Management Permit Application for Receiving Stream Name (Wilson Creek). _�7,U l s7 I {-Ct S .lease check the Stormwater Narrative for DALI & DA1.2. They don't add up to total area of 1.53 nor the total impervious area of 0.97 acres. __IO_�. Please provide two copies of signed and sealed revised sheets and calculations. The above requested information must be received in this office prior to April 26, 2007 or your application will be returned as incomplete. The return of this project will necessitate resubmittal of all North Carolina Division of Water Quality Washington Regional Office Phone (252) 946-6481 FAX (252) 946-9215 Customer Service Intemet h2o.emstate.naus 943 Washington Square Mail, Washington, NC 27889 1-877-623-6748 An Equal Opportunity/Affimu ve Action Employer —50%Regded/10% Post Consumer Paper Nor`{hCarolina 117nhirn//rr 4 May 02 2007 1:30PM HP LASERJET FAX P.1 4807-C KWw BNC. Greensboro, RC 2740' Pt*m 33641$-W82 5lm z To: FACSIMILE TRANSMITTAL From Fax Number: (336) 218-8010 Company: FaxNo.: 25? ` 4 Phone No.: Number of pVes (tncluding this cover shot): From: d -14 i Project Name: Project No.: Message: Copies: � ) (Company) (Fax No.) (Narm) (ComPaay) (Fax No.) . (Flame) (Company) (F&KNo.) "am 02 2007 1:30PM HP LASERJET FAX p.2 --DA --z Receiving StreamName l LS >rJ C Receiving Stream Class i L. Scy,� Ocr_ Drainage Area EA%dngImpervious' Area Proposed Impervious*Area-Xj f—JTJY G ii Impervloaa Area (totaU t't�^�he'.cv�+�s.�irz�sr�'�. sidewalks. gravd arm etc but nat Waited to. roads.Prkingatras. i/Z/e2 34 54 1. Zvi 7JJ�� ! T sidewalks. gravd arm etc but nat Waited to. roads.Prkingatras. i/Z/e2 34 54 1. Zvi 7JJ�� ! T 4807-C Koger Blvd. Greensboro, NC 27407 Phone 336-218-8282 Fax 336-218-8010 TRANSMITTAL'LETTER Date: February 27, 2007 To: Mr. Samir Dumpor North Carolina Department of Natural Resources Washington Regional Office 943 Washington Square Mall Washington, NC 27889 Project: McCarthy Court III New Bern, NC We Transmit: ( x ) herewith ( ) under separate cover The Following: Copies Date CURVED hint p ®Wa-WAR", Project No.: 05-065 For Your: ( ) approval ( x ) review & comment ( ) use Description 2 Revised Site Civil Plans 2 Revised Stormwater Application 2 Revised BMP Supplemental form 2 Revised Stormwater Calculations 2 Revised Site Narritive 1 $420.00 Review Fee Remarks: Samir- Attached you will find the above referenced materials for your review and approval for the modification to permit #SW 7060612 issued on 9-15-06. If you have questions or need additional information, please call. Thanks Copies: Sincerely, Matthew W. Johnson, P.E. Civil Engineer P:�IXISWcCa by Coun 3WdmioM2707 SWplans to Whhinymn.wpd CALCULATIONS FOR McCARTHY COURT 3 REVISED STORMWATER MANAGEMENT MAR 0 2 2007 DWQ-WARD NEW BERN, NORTH CAROLINA i16s s rid IM Ta'- V „E� U • ��� Desl�n Group January 22, 2007 4807-C Koger Blvd. Greensboro, NC 27407 Phone 336-218-8282 Fax 336-218-8010 TRANSMITTAL LETTER Date: April 20, 2007 RECEQVED a. 13 M07 To: Mr. SamirDumper ®VVQ-WARO North Carolina Department of Natural Resources Washington Regional Office 943 Washington Square Mall Washington, NC 27889 Project: McCarthy Court III New Bern, NC We Transmit: ( x ) herewith ( ) under separate cover The Following: Copies Date Project No.: 05-065 For Your: ( ) approval ( x ) review & comment ( ) use Description 2 Revised Site Civil Plans 2 Revised Stormwater Application 2 Revised BMP Supplemental form 2 Revised Stormwater Calculations 2 Revised Site Narritive Remarks: Samir- Attached you will find the revisions to the above referenced materials for your review and approval for the modification to permit #SW 7060612 issued on 9-15- 06. If you have questions or need additional information, please call. Thanks Copies: Sincerely, By: YIl a jl„.o,. Matthew W. Johnson, P.L. Civil Engineer r:rzooswmc�ni,r coin dtin�n�amazo,m sw�m�: �o wushlnsmn.wnd Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality March 26, 2007 McCarthy Court III! Attn: Mike Bateman 300 North'Greene Street, Suite 1000 Greensboro, NC 27401 Subject: Stormwater Review SW7060612 Modification McCarthy Court 3 Craven County Dear Mr. Bateman: This office received a Coastal Stormwater permit application and plans for the subject project on March 2, 2007. A preliminary review of the project indicates that before a State Stormwater permit can be issued the following additional information is needed. I. Please explain who owns the McAden Property. If McCarthy CourtIII, LLC is the Owner, than this permit SW7060612 has to be Modified to include this additional runoff, and detailed drawing of this property with stormwater collection system and all other required items needs to be shown. If the owners is somebody other than McCarthy Court, the Modification to this permit is still required, but offsite property will need separate Offsite SW permit also. 2. Please revise the application to show the full name of the applicant (LLC ?) — Section 1, L, as well as provide the owners title — Section 1.2.. 3. The Stormwater Management Permit Application Form shows Impervious Area of the Drainage area 3 to be 25,614 s.f. (or 0.588 acres as I calculated) while 0.67 acres was shown on application. 4. SA/DA ratio on sheet C2.1 RI is 5.8152, while the supplement shows SA/DA to be 5.30 — Please explain. 5. Sheet C1.3 R1 — Move the berm between forebay and Main pond to show 20% forebay to main pond ratio more accurately. 6. Wet Detention Basin Supplement — On Required Items Check List initial items d, e, and i. 7. Please delineate the Drainage Areas . 8. Revise the Stormwater Management Permit Application for Receiving Stream Name (Wilson Creek). 9. Please check the Stormwater Narrative for DAI.1 & DA1.2. They don't add up to total area of 1.53 nor the total impervious area of 0.97 acres. 10. Please provide two copies of signed and sealed revised sheets and calculations. The above requested information must be received in this office prior to April 26, 2007 or your application will be returned as incomplete. The return of this project will necessitate resubmittal of all North Carolina Division of Water Quality Washington Regional Office Phone (252) 946-6481 FAX (252) 946-9215 Customer Service Internet h2o.encstate.nc.us 943 Washington Square Mall, Washington, NC 27889 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer— 50%Recycledlt0% Post Consumer Paper No` Carolina T nhhirn//u required items including the application fee. If you need additional time to submit the required information, please mail or fax your request for time extension to this office at the Letterhead address. You should also be aware that the Stormwater Rules require that the permit be issued prior to any development activity. Construction without a permit is a violation of 15A NCAC 21-1.1000 and North Carolina General Statute 143-215.1 and may result in civil penalties of up to $10,000 per day. Please reference the Stormwater Project Number above on all correspondence. If you have questions, please feel free to contact me at (252) 948-3959. Sincerely, F Samir Dumpor, PE Environmental Engineer "Washington Regional Office cc: L. Allan Hill, PE, Triad Design Group (4807-C Koger Boulevard, Greensboro, NC 27407 Washington Regional Office McCarthy Court III SW Permit #SW7060612 Subject: McCarthy Court III SW Permit #SW7060612 From: "Matt Johnson" <mjohnson@triad-designgroup.com> Date: Thu, 12 Apr 2007 08:25:02 -0400 To: <samir.dumpor@ncmail.net> Samir- We are addressing comments to the McCarthy Court III Stormwater Permit SW7060612 Modification. In your comment letter you have asked for an explanation of the who owns the adjacent property. The adjacent property is owned by a separate owner and due to an agreement between the two owners, the owner of the McCarthy Court I II has agreed to accept and control the adjacent property owners stormwater runoff. The main reason for the Modification is to increase the size of the pond to handle and control the adjacent property owners stormwater due to the fore mentioned agreement between the two property owners. In submitting this permit, we are trying to permit the stormwater pond for the construction of the McCarthy site and also permit the additional impervious area on the adjacent owners site. The adjacent owner is not ready to construct atthis time but we would like to permit his impervious area with this modification so that when he is ready for construction it is known that his stormwater is to flow to an approved device for the permitted amount of impervious area. What else do we need to submit with our plans so that we can permit the adjacent owners offsite flow and impervious area? Thanks for your help Matt Johnson, P.E. Civil Engineer Triad Design Group P.C. 336-218-8282 fI d/1 VInM R•2R AAA t - �w -4 SITE NARRATIVE for McCARTHV COURT 3 STORMWATER MANAGEMENT EROSION AND SEDIMENTATION CONTROL PLAN General RE (i�¢O46 PO APR 2 3 RN The site is approximately 2.12 acres located off of McConnell Boulevard inVew B' yny"j . South of NC 17. The site is open and undeveloped with patches of grass, weeds and a few trees along the property line. The site grades generally slope down from northeast to southwest, with an elevation change of approximately 6 feet. Offsite flow has been added to the stormdrain in addition to the previously approved plans. Development Approximately 2.0 acres of the site will be disturbed to provide a 30 unit apartment building and associated parking and drive areas consisting of a total of 0.92 acres of built upon area. Storm runoff will be controlled by the use of Swales, Storm drains, and a wet detention pond. The adjacent property, also known as the Harness site or McAden Property, will utilize the stormwater pond at a later date to help control the storm runoff of the adjacent site. The McAden property is expected to consist of approximately 0.77 acre of BUA consisting of a 7,500 sf building and the associated parking and drive areas. The Harness site is owned by Mr. and Ms. McAden and will be developed at a later date by the McAden's. A stormwater plan for the McAden site will be submitted at the time of development, however all stormwater runoff will be directed to the wet detention pond on the McCarthy Site. On -Site Soil Conditions Five to six inches of topsoil stripping across the site will be required. Some undercutting and stabilization of soils on the site may be required to obtain required compaction of future building pads and paved areas. The maximum cut and till slopes should be no more than 2.5 to I. Erosion Control Plans and Specifications All required devices are shown on the project plans and details. Additional information and requirements may be found on the project plans under "Erosion Control Notes". Seeding and earthwork specifications are found on sheet C2.3 of the drawings. Additional devices beyond those shown on the plan may have to be installed later due to local site conditions, or unanticipated problems. Stormwater Treatment Plan The site will be broken into four drainage areas DA-1, DA-2, DA-3 and offsite drainage area, with sub -drainage areas within DA-land DA-3. Drainage area 1 (DA-1) consists of 1.73 acres and will contain 0.90 Acre of the total 0.92 acre of proposed built upon area for the proposed site. The offsite drainage area, or McAden Property will consist of 1.19 Acres with 0.77 Acres of future BUA. All of the future offsite drainage area and DA-I will flow to and pass through the proposed stornnvater detention pond designed for 90% TSS removal. Sub -drainage area of DA-1-1 totaling 0.55 acre, with 0.40 acre of BUA, will pass through a grass swale designed to retain the first I inch of rain fall for a minimum of 60 min residence time prior to reaching the pond, helping to control the pollutants within the stormwater runoff. The remainder of the 1.73 acres (total of 1.18 acres with 0.50 acre of BUA) will flow directly to the stormwater detention pond by use of stormdrains and or swales with less than 60 min residence time. All the future offsite drainage area will enter the proposed drainage system by a grassed swale with the adjacent property owner controlling the nutrients prior to entering the subject site. Once treated by the stormwater detention pond, the reduced flow from the stormwater runoff will exit the site by a grass swale that has been designed to retain the I" 1 inch of rain fall for a minimum of 60 min. residence time. Once offsite the flow will then enter in to an existing stormdrainage system. DA-2 will consist of 0.24 acre of the total 2.12 acres and will contain 0.01 acre of the total 0.92 acre BUA. All flow from DA-2 and the routed flow from the pond will enter into a grassed swalc, as mentioned above, designed to controll the 1" I inch of rain fall for a minimum of 60 min. to help reduce the nutrients of the runoff. The designed swale will further reduce the post development runoff to levels below predeveloped flows. DA-3 will consist of 0.15 acre of the total 2.12 acres and will consist of 0.01 acre of BUA. DA-3 will completely bypass the pond due to grading restraints and exit the site by either sheet flow or grassed swales Flow Summary - Pre -developed flow - I yr = 1.26 cfs McCarthy Site 10 yr = 5.98 cfs Pre -developed flow- I yr = 0.00 Harness/McAden Site-10yr = 0.55 Total flow from Site- Iyr= 1.26 Pre -developed IOyr = 6.49 Post Developed flow - I yr = 3.39 cfs to pond (1.78 ac) 10 yr = 8.41 cfs DA- I 100 yr = 14.83 cfs Post Developed flow -1 yr = 1.96 cfs from site I Oyr = 4.39 cfs Harness Site 100 yr = 9.56 cfs Time to Tp= 12.11 hrs Peak Flow Tp= 12.10 hrs hrs Tp= 12.10 hrs Time to Tp= 12.11 hrs Peak Flow Tp= 12.10 hrs hrs Tp= 12.10 hrs Total Flow to - Pond Routed Flow - from Pond Flow by passing - Pond DA-2 (0.24 ac) 1 yr = 5.35 Time to Tp= 12.11 1 Oyr = 13.73 Peak Flow Tp= 12.10 100 yr = 24.12 hrs Tp= 12.10 1 yr = 1.54 cfs Time to Tp = 12.44 hrs 10 yr = 4.38 cfs Peak Flow Tp = 12.40 hrs 100 yr = 16.33 cfs hrs Tp = 12.18 I yr=0.17efs 10 yr = 0.73 cfs 100 yr = 1.53 cfs Peak Flow to Grassed I yr = 1.61 Swale 10 yr = 4.95 100yr = 17.44 Flow from Grassed Swale/ Discharge Point Flow from DA-3 Peak Flow From Site Total flow From Site Post Development Iyr= 1.19 10 yr = 4.64 100yr =17.44 Iyr=0.11 I Oyr = 0.45 I OOyr = 0.96 Iyr= 1.21 1 Oyr = 4.81 1 OOyr = 17.94 1 yr = 1.21 efs 10 yr = 4.81 cfs 100 yr = 17.94 cfs Construction Sequence Time to Peak Flow hrs Time to Peak Flow hrs Time to Peak Flow H rs Time to Peak Flow hrs Time to Peak Flow hrs Tp = 12.11 hrs Tp = 12.11 hrs Tp = 12.10 hrs Tp = 12.44 hrs Tp = 12.40 hrs Tp = 12.18 hrs Tp = 12.92 Tp = 12.40 Tp = 12.19 Tp= 12.12 Tp= 12.10 Tp= 12.10 Tp = 12.93 Tp = 12.40 Tp= 12.18 < 1.26 efs O.K. (96.03% of Pre Develop Flow) < 5.98 cfs O.K. (80.43% of Pre Develop Flow) Pond can Handle 100 yr Event O.K. The site will be developed according to the following sequence. Some deviations from this sequence may be required due to local site conditions, or unanticipated problems. These changes will be coordinated through the engineer and city inspections staff. All work must meet City of New Bern and NCDENR standards. A pre -construction meeting between the grading contractor and NCDENR and City of New Bern staff may be required. A copy of the permit and approved plans must be kept on the job site at all times. Additional pre -construction meetings with other interested parties may be required. 1. Install gravel construction entrance at the location shown on the plans. 2. Install pond, riser and barrel, silt fence, diversion berms, and other erosion control devices as shown on plans. . 3. Stabilize temporary measures, such as berms with temporary seeding and/or excelsior matting with in 21 calendar days of installation. 4. Clear site 5. Begin rough grading the site. 6. As grading progress, install swales and storm drains as grading permits . 7. Install inlet protection at all structures. 8. Fine grade parking lot and building pad. 9. Place Gravel on drives and parking lot/ 10. Begin Building construction. 11. Once building construction is complete, Remove all silt from temporary sediment basin and prepare for permanent wet detention pond use. 12. Pave drives and parking lot. 13. Remove Erosion control device and stabilize any areas that may have become unstable due to the removal of erosion control devices 14. Install temporary seeding on all disturbed areas within 21 calander days of completion of any phase of the work or finished grades. CALCULATIONS FOR McCARTHY COURT 3 REVISED STORMWATER MANAGEMENT APR 2 3 2007 NEW BERN, NORTH CAROLINA LL k\CARTriad Lj S., DeSi�n Group OyI,I�� 111 April 18, 2007 POND CHECK - RISER2.wb3 04/20/07 PERMANENT WET DETENTION POND DESIGN - RISER/BARREL Revised 8-24-99 GUILFORD COUNTY PLANNING & DEVELOPMENT DEPARTMENT PROJECT: McCarthyCourt 3 INDEX N0: INDEX CHECKED BY: NAME LOCATION: McCarthyBoulevard New Bern, INC DATE: DATE REVISED: SITE DATA TOTAL SITE AREA = 2.121 WATERSHED =I Costal Count PROPOSED BUILT UPON AREA = 0.92 CLASSIFICATION: WS - N/A FUTURE BUILT UPON AREA = 0.00 GWA/WCA = N/A TOTAL ON -SITE BUILT UPON AREA = 0.92 PERCENT BUILT -UPON = 43.31% ON -SITE DRAINAGE AREA TO POND = 1.73 ON -SITE BUA TO POND = 0.90 NSITE % BUA FOR POND SUB -BASIN = 52.02% OFF -SITE DRAINAGE AREA TO POND = 1.19 MAX. OFF -SITE B.U.% = 65% TOTAL WATERSHED AREA TO POND = 2.92 DISTURBED AREA = 2.00 TEMP. SED. STOR. USED Y/N DESIGN DATA TEMPORARY SEDIMENT STORAGE 0.5 acre -inch per disturbed acre PERMANENT SEDIMENT STORAGE 0.125 acre -in per total drainage area PERMANENT WATER QUALITY COMPOSITE B.U. % = 57.31 percent DEPTH minimum 3 feet 4.0 feet SA/DA (Figure 5.6-2 5.031 percent TEMPORARY WATER QUALITY 1.0 rainfall to be controlled PRINCIPAL SPILLWAY TYPE X corrugated aluminum reinforced concrete DESIGN STORM 10 year RAINFALL INTENSITY 6 inches er hour RUNOFF COEFFICIENT 0.69 EMERGENCY SPILLWAY TYPE X crass lined rip -rap lined DESIGN STORM 100 year RAINFALL INTENSITY 11 inches per hour RUNOFF COEFFICIENT 0.69 POND DATA ELEV. BOT. OF POND = 95 SURFACE AREA = 0 ELEV. BOT. OF PSS = 95 SURFACE AREA = 0 ELEV. BOT. OF PWQ = 96 SURFACE AREA = 2700 ELEV. (5NORMAL POOL = 99 SURFACE AREA = 9542 ELEV. @ TOP. OF RISER = 99.6 SURFACE AREA = 10760 ELEV. EMER. SPILLWAY = 101 ELEV. TOP OF DAM = 102 INVERT OF BARREL = 95.97 Page 1 BOND CHECK - RISER2.wb3 04/20/07 POND DESIGN TEMPORARY SEDIMENT STORAGE VOLUME REQUIRED 3630 VOLUME PROVIDED LEV. @ BOT. OF POND= 95.00 SURFACE AREA = 0 LEV. @ NORMAL POOL = 99.00 SURFACE AREA = 9542 ALLOW 75% OF BASIN VOLUME TO WQ ORIFICE = 14313 OK PERMANENT SEDIMENT STORAGE VOLUME REQUIRED 1325 VOLUME PROVIDED ELEV. BOT. OF PSS = 195.00 SURFACE AREA = 0 ELEV. @ BOT. OF PWQ = 96.00 SURFACE AREA = 2700 VOLUME PROVIDED = 1350 OK PERMANENT WATER QUALITY SURFACE AREA REQ'D 6399 NORMAL POOL ELEVATION = 99.00 SURFACE AREA PROVIDED = 9542 OK TEMPORARY WATER QUALITY STORAGE REQUIRED Rv= 0.566 VOLUME REQUIRED = 5997 VOLUME PROVIDED ELEV. @ BOT. OF TWO = 99.00 SURFACE AREA = 9542 ELEV. na, TOP OF TWO = 99.60 SURFACE AREA = 10760 VOLUME PROVIDED = 6091 OK PRINCIPAL SPILLWAY DESIGN STORM PEAK FLOW = 12.1 HEAD ABOVE TOP OF RISER = 1.40 ELEVATION AT TOP OF RISER = 99.60 BARREL: BARREL SIZE USED in = 12.00 ELEVATION AT TOP OF RISER = 99.60 ELEVATION OF BARREL INVERT = 95.97 Hw PROVIDED = 3.63 Hw/D PROVIDED= 3.63 Hw/D REQ'D. FOR DESIGN STORM FROM CHART) = 1.5 Hw REQUIRED = 1.50 CHECK CULVERT (INLET CONTROL)= OK Q FROM CHART AT Hw/D PROVIDED= 50.01 RISER: RISER(AREA) =1.5 TIMES AREA OF: 12.00 MIN. RISER DIA. = 14.70 _L- rage 2 POND CHECK - RISER2.wb3 04/20/07 RISER DIA.USED = 124 WEIR EQUATION: Qw = 34.7 OK ORIFICE EQUATION : Qo = 17.9 OK Go CONTROLS =C117 17.9 PRINCIPAL SPILLWAY SYSTEM: RISER CONTROLS 17.9 PRINCIPAL SPILLWAY SYSTEM: OK WATER QUALITY RELEASE HOLE ELEV. CcD BOT. OF WATER QUALITY RELEASE HOLE = 99.00 MAXIMUM RELEASE RATE = 4 MINIMUM RELEASE RATE = 6 MAXIMUM HOLE SIZE = 0.00888335699048269 1.28 MINIMUM HOLE SIZE = 0.00592223799365513 1.04 EMERGENCY SPILLWAY ELEV. a7 EMER. SPILLWAY = 101 DESIGN STORM PEAK FLOW = 22.2 FLOW THROUGH EMER. SPILLWAY = 4.3 EMER. SPILLWAY SIDE SLOPES (ie 3 if 3:1, 0 if vertical) = 3 FLOW DEPTH =F 0.50 BOTTOM WIDTH REQUIRED = 1.79 FLOTATION OF RISER ELEV. Co). TOP OF RISER = 99.60 ELEV. @ BOT. OF PSS = 95.00 H = 4.60 AREA OF RISER = 3.1 VOLUME OF RISER = 14.5 AREA OF BARREL = 0.8 EXPOSED LENGTH = 10.00 VOLUME OF BARREL = 7.9 WEIGHT OF WATER DISPLACED = 1391.85 FACTOR OF SAFETY (10%) 1531.04 VOLUME OF CONCRETE ANCHOR = 1 17.5 Page 3 \O�OF W ATF9QG CO % 1 Mr. Mike Bateman McCarthy Court III, L.L.C. 300 North Greene Street, Suite 1000 Greensboro, NC 27401 Dear Mr. Bateman: Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality September 15, 2006 Cr 1A01 Z 1 `� n �h1s c�e� re SU 0n Subject: Permit No. SW7060612 McCarthy Court 3 High Density Stormwater Project Craven County The Washington Regional Office received a completed Stormwater Application for the subject project on August 24, 2006. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW7060612 dated September 15, 2006 to McCarthy Court III, L.L.C. for a wet detention pond to serve the McCarthy Court 3 located off of McCarthy Boulevard, just south of NC 17 in New Bern, NC. This permit shall be effective from the date of issuance until September 15, 2016 and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. The issuance of this permit does not resolve any previous violations of the stormwater rules for construction without a permit. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. Unless such dernands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Samir Dumpor or me at (252) 946-6481. cerely r AI 45dge, gional Supervisor Surface Water Protection Section Washington Regional Office cc: Triad Design Group Craven County Inspections Washington Regional Office Central Files North Carolina Division of Water Quality Internet, www.ncwateraualav,ore 943 Washington Square Mall Phone (252) 946-6481 Washington, NC 27889 Fax (252) 946-9215- one NhCarolina Naturally An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper State Stormwater Management Systems Permit No. SW7060612 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 McCarthy Court III, L.L.C. McCarthy Court 3 Craven County FOR THE construction, operation and maintenance of stormwater management systems 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 for a wet detention pond to serve the Weeping Radish located off of McCarthy Boulevard, just south of NC 17 in New Bern, NC. This permit shall be effective from the date of issuance until September 15, 2006 and shall be subject to the following specified conditions and limitations: 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 2 of this permit, the Project Data Sheet. 3. A maximum of 42,035 square feet of built upon area is allowed on this 2.12 acre site. 1 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 approved plans. 5. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. DIVISION OF WATER QUALITY PROJECT DATA Project Name: McCarthy Court 3 Permit Number: SW7060612 Location: Craven County Applicant: McCarthy Court III, L.L.C. Mailing Address: 300 North Greene Street, Suite 1000 Greensboro, NC 27401 Application Date: 7/10/2006 Receiving Stream: Wilson Creek Classification of Water Body: C; Sw; NSW Total Site Area: 2.12 ac Drainage area: 1.53 ac Total Impervious allowed on site: 42,035 sf Wet Pond Depth: 4.0 ft Required Storage Volume: 3,447 cf Provided Storage Volume: 5,295 cf Required Surface Area: 3,876 sf Provided Surface Area: 4,904 sf Controlling Orifice: 1.0 inch @ elevation 99.0 ft 4. No homeowner/lot owner/developer shall be allowed to fill in, alter, or pipe any vegetative practices (such as swales) shown on the approved plans as part of the stormwater management system without submitting a revision to the permit and receiving approval from the Division. 5. 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 e. Further subdivision of the project area. In addition, the Director may determine that other revisions to the project should require a modification to the permit. 6. 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. II. SCHEDULE OF COMPLIANCE The permittee will comply with the following schedule for construction and maintenance of the stormwater management system. a. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surfaces except roads. b. During.construction, erosion shall be kept to a minimum and any eroded areas of the system will be . repaired immediately. 2. The facilities must be properly maintained and operated at all times. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals. 3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency including, but not limited to: a. Semiannual scheduled inspections (every 6 months) b. Sediment removal C. 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. 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. 5. 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. 6. Upon completion of construction 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. Mail the Certification to the Washington Regional Office, 943 Washington Square Mall, Washington, North Carolina, 27889, attention Division of Water Quality. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of five years from the date of the completion of construction. Ill. 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- 215.6(a) to 143-215.6(c). 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 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. 6. The Permittee, at least six (6) months prior to the expiration of this permit, shall submit in writing a request for an extension along with appropriate application fee. Permit issued this the 15 th day of September, 2006. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION for Alan W. Klimek, P.E. Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW7060612 McCarthy Court III, L.L.C. — McCarthy Court 3 Stormwater Permit No. SW7060612 Designer's Certification I, as a duly Registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project, (Project) for (Project Owner) hereby state that to the best of my abilities, due care 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. Signature Registration Number Date Certification Requirements: 1. 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. All roof drains are located such that the runoff is directed into the system. _5. The outlet/bypass structure elevations are per the approved plan. 6. The outlet structure is located per the approved plans. _7. Trash rack is provided on the outlet/bypass structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short-circuiting of the system. _11. The permitted amounts of surface area and/or volume have been provided. 12. Required drawdown devices are correctly sized per the approved plans. 13. All required design depths are provided. 14. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 15. The required system dimensions are provided per the approved plans. of wArF9 swJ 166 a61. C July 3, 2006 Mr. Mike Bateman 300 North Greene Street, Suite 1000 Greensboro, NC 27401 Michael F. Easley, Governor O William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality SUBJECT: Stormwater Application for McCarthy Court 3 Dear Mr. Bateman: This office received a stormwater permit application for the subject project on June 28, 2006. A preliminary review of your project indicates that the application package is incomplete. The following items are needed to make the package complete: _ $420 check _ signature by owner on page 4 of application 2 sets of plans . _ narrative _ supplement (wet detention, infiltration basin, low density, curb outlet system, off -site system, underground infiltration trench) signature by owner on supplement form I/ soils report . We are returning the entire package to you. Once the package is complete you may resubmit. You should also be aware that the Stormwater Rules require that a permit be issued prior to any development activity. Construction without a permit is a violation of 15A NCAC 2h.1000 and North Carolina General Statute 143-215.1 and may result in civil penalties of up to $10,000 per day. If you have any questions, please feel free to contact me at (252) 948-3844. Ax ncer lY,Hodge, Regional Supervisor Surface Water Protection Washington Regional Office cc: Triad Design Group AaRO North Carolina Division of Water Quality Internet: www rtcwateraualitv.ore 943 Washington Square Mall Phone (252) 946-6481 Washington, NC 27889 Fax (252) 946-9215 None Carolina Naturally An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper L Triad` Design Group 4807-C Koger Blvd. Greensboro, NC 27407 Phone 336-218-8282 Fax 336-218-8010 TRANSMITTAL LETTER Date: July 07, 2006 To: Mr. Al Hodge North Carolina Department of Natural Resources Washington Regional Office 943 Washington Square Mall Washington, NC 27889 Project: McCarthy Court III New Bern, NC We Transmit: ( x ) herewith ( ) under separate cover The Following: Copies Date RECEuV E-0 JUL 1 0 2006 DWQ-WARD Project No.: 05-065 For Your: ( ) approval ( x ) review & comment ( ) use Description 2 Site Civil Plans I Stormwater Application 1 BMP Supplemental form I Stormwater Calculations 1 Site Narritive 1 $420.00 Review Fee 1 Soils Report Remarks: Al - Attached you will find the above referenced materials for your review and approval. If you have questions or need additional information, please call. Thanks Copies: Sincerely, By: _Matt Johnson Matthew W. Johnson, P.E. Civil Engineer P:@MW,Canhy Co.n 3W .i.%07.0]06 EC,J.nsm N'ashing�mi.upd W ATF9 0 � -i McCarthy Court III, LLC Attn: Mike Bateman 300 North Greene Street, Suite 1000 Greensboro, NC 27401 Dear Mr. Bateman: Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality August 15, 2006 Subject: Stormwater Review SW7060612 McCarthy Court 3 Craven County This office received a Coastal Stormwater permit application and plans for the subject project on July 10, 2006. A preliminary review of the project indicates that before a State Stormwater permit can be issued the following additional information is needed. 1. Please provide detailed narrative description of Stormwater treatment and management including drainage areas delineation. Please be specific about drainage areas, drainage paths and treatment. 2. The Stormwater Management Permit Application Form shows Total Project Area to be 2.124 Acres, one Drainage Area (2.124 Acres?) and Project Built Upon Area of 45.67% while the Calculations for Stormwater Management shows Total Area of 1.44 Acres and Percent Built Upon of 67.36%. Please revise and show correct values. 3. SAIDA Calculations in Stormwater Management Calculations Supplement were based on 67.36%(?) and SAIDA percentage of 2.75 as shown in calculations indicates that the Piedmont Table was used for the depth of 3 feet. Please revise SAIDA calculations using correct percentage and the Table for Coastal Counties (attached) using depth of Permanent Pool (4 feet). 4. It appears that the Forebay Volume of is calculated as 20% of total Volume (Permanent + Temporary Pool Volume). Please reduce the Forebay Volume to 20% of Total Permanent Pool Volume. 5. Please specify seeding on the Vegetative Shelf. 6. Please delineate Wetlands on plans or add a note that none exist. 7. Please provide two copies of signed and sealed revised sheets and calculations. The above requested information must be received in this office prior to September 15 , 2006 or your application will be returned as incomplete. The return of this project will necessitate resubmittal of all required items including the,application fee. If you need additional time to submit the required information, please mail or fax your request for time extension to this office at the Letterhead address. North Carolina Division of Water Quality Washington Regional Office Phone (252) 946-6481 FAX (252) 946-9215 Customer Service Internet: h2o.encstale.nc.us 943 Washington Square Mall, Washington, NC 27889 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer - 50% Recycled110% Post Consumer Paper N''ott�� hCarolIina yvaturalYY You should also be aware that the Stormwater Rules require that the permit be issued prior to any development activity. Construction without a permit is a violation of 15A NCAC 2H.1000 and North Carolina General Statute 143-215.1 and may result in civil penalties of up to $10,000 per day. Please reference the Stormwater Project Number above on all correspondence. If you have questions, please feel free to contact me at (252) 948-3959. Sincerely, Samir Dumpor Environmental Engineer Washington Regional Office cc: L. Allan Hill, PE, Triad Design Group (4807-C Koger Boulevard, Greensboro, NC 27407 . t/ Washington Regional Office CAROLINA ENGINEERS September 12, 2005 Steven D. Bell & Company 300 North Greene Street, Suite 1000 Greensboro, NC 27401 Attention: Mr. Mike Bateman JUL 1 0 2006 kil Q-VVAR0 Subject: Geotechnical Report Proposed 3-Story Apartment Building, McCarthy Boulevard Extension New Bern, North Carolina Dear Mike: In accordance with your, request, Carolina Engineers, P.A. has completed a limited subsurface soil exploration and performed a geotechnical evaluation for the proposed 3-story apartment building to be constructed, on McCarthy Boulevard Extension in New Bern, North Carolina. The purpose of our exploration_ and evaluation was to assess the subsurface soil conditions at the site"and provide engineermg recommendations for building foundations `and site'preparation. The following summaries detail field exploration, geotechnical evaluation, and recommendations: Project Information e proposed p p apartment building, will be constructed on the west side of McCarthy Boulevard Extension north of the recently constructed McCarthy'Court ikpartmeut complex: The apartment building will heya single building 3-stories in height fronted bya parking lot wi1.th a garage and drive on the north side. Although the finish floor elevation_ s are not available, we assumed the apartment building will be constructed approximatelythree (3) feet above existing elevations io allow positive drainage. Column and wall loads for the apartment building are estimated'atapproximately 20 kilo pounds (kips) and 2 kips per foot respectively. Field Exploration The field exploration consisted of performing three (3) hand auger borings to depths of eight (8) feet and visually classifying the encountered soils in accordance with ASTM D-2488. In conjunction with -the borings, Dynamic Cone Penetration (DCP) tests were performed in accordance with ASTM Carolina Engineers • P.O. Box 1595 • New Bern, NC.28563 • Tel. (252) 633-2425 - Fax (252) 633-1370 I 'Steven D. Bell & Company September 12, 2005 Page 2 STP-399 guidelines at selected intervals. Detailed descriptions of materials encountered in the hand auger borings are provided as individual soil boring logs. Penetration resistances, ground water conditions, and other information are also pointed out. The stratification represents.our interpretation of the materials encountered as the borings were advanced. The lines shown on the boring profiles may be more gradual than implied. Gcotcchnical Evaluations Site and Subsurface Conditions The site is currently an unoccupied, cleared and generally level field. Typical subsurface soils in this area of Eastern North Carolina are formed from coastal plain marine deposits consisting predominantly of plastic clays interbedded with strata of sands and silts. The borings performed on the south side of the project encountered approximately eighteen (18) inches of topsoil at the present grades underlain with a black, organic silty sand material (peat) to a depth of approximately 3 to 4 feet below the surface. Beneath the peat a dark gray slightly silty poorly graded sand was encountered.to the boring termination depth of eight (8) feet. DCP resistances in the organic material ranged from 3 to 8 blows per interval and DCP values in the silty poorly graded sands ranged: from 5 to 7 blows per interval. The boring performed in the north section:of the property encountered brown to. orange slightly clayey sands to a depth of two (2).feet underlain with a two (2) foot strata of light tan poorly graded sand. It is obvious this is fill material imported to the site. Below this fill material to the boring termination depth of 8 feet slightly silty poorly graded sands were encountered. DCP values performed on the fill materials ranged from 7 to 8 blows per interval at depths of two (2) and four (4) feet. Groundwater levels were measured in all borings upon completion of auguring to document water table depths. The groundwater levels encountered ranged around five (5) feet below existing ground surface. Fluctuations in groundwater levels should be anticipated throughout the year due to seasonal variations in rainfall, ditch water levels and other factors. Design Considerations Based on the 'results of our field exploration, we have determined remedial work on subsurface soils will be required at the south sections of the property. The depths are currently identified as four (4) feet beneath the existing grades in this area. DCP resistances in these areas revealed the existing peat material to be loose and highly susceptible to elastic and consolidation settlement and the material should be removed in the areas where structures, drives and parking areas are to be constructed. These areas should be over excavated a minimum of four (4) feet and back filled with a select material. Following the over excavation.and back fill, column foundations can be designed based on soil bearing capacities of 1500 pounds per square foot (psf). Isolated footings should have a minimum width of three (3) feet and continuous footings should, have widths of at least two (2) feet. Relatively uniformly distributed loads up to 1000 psf may be supported by a slab. A four (4) inch layer of washed stone or coarse sand along with a suitable moisture barrier should be provided Steven D. Bell & Company September 12, 2005 Page 3 beneath all slabs to prevent a capillary rise and moisture in the slabs. Due to the low permeable surface soils, finished grades should slope away from the building on all sides and roof down spouts should discharge well away from the building, also. The asphalt pavement sections shall be designed based on a California Bearing Ratio of 5. To prevent infiltration of water into the subgrade, pavement surfaces should have a minimum slope of one -quarter (1/4) inch per foot and the edges of pavements should be provided a means of water release by extending the aggregate base course through to drainage swells. A typical design would consist of six (6) inches of NC DOT Aggregate Base Course and two (2) inches of asphalt surface course Type SP 9.5A. Recommendations We recommend the site be improved by stripping the top soil and over excavating the organic peat material found at the south end of the proposed building and parking lot areas. The excavations should extend ten (10) feet outside the footprint of the building and 5 feet outside the edge of the proposed parking. areas. The backfill should be a select fill material consisting of clean sands free of roots and organic material with a fines content of no more than 15%. The select sand material should be placed in the over excavated areas immediately after excavation in an initial.two (2) foot bridge lift followed by successive loose lifts not exceeding twelve (12) inches in thickness. Each lift shall be compacted to at least 980A of the Standard Proctor maximum dry density and the filling and compacting shall continue in twelve (12) inch loose lifts until.the desired subgrade elevations are reached. The remaining area of the site not containing the peat material should be proof rolled to locate and delineate the areas with loose soils. Once the areas are delineated the loose soils lying beneath proposed structures, drives and parking areas should be over excavated to a minimum depth of three (3) feet and back filled with the select fill material. A 'soils engineer or his designated representative should witness the over excavation and back fill. Recommendations should be given by the soils engineer based on the context of the material found in the excavations. A soils engineer or a representative should test and approve select fill material and perform density tests for the compacted sand fill material. The compacted aggregate base course and asphalt pavement should be tested for conformance with applicable NCDOT standards. Closing These analyses and recommendations are, of necessity, based on concepts made available to us at the time of writing this report. Assumption has been made that the limited exploratory borings are representative of conditions across the site. If during construction phases, conditions are encountered which differ significantly from those reported herein, we should be immediately notified so our analyses and recommendations can be reviewed and/or revised as necessary. Steven D. Bell & Company September 12, 2005 Page 4 We appreciate the opportunity to be of service and hope our investigation has satisfied your needs for this project. If additional information is needed or you have any questions, please feel free to call. Sincerely, CAROLINA ENGINEERS, P.A. CARL C. HUDDLE, P.E. Project Engineer North Carolina Registration No. enclosures: . Q CARL C. HUDDLE 1. CAROLINA ENGINEERS: PA CAROLINA ENGINEERS, P.A. P. O. Box 1573 New Bent, NC 26563 Phone (252) 633-2424 Fax (252)-633-1370 Client: Steven D. Bell & Company Date: Sept. 12, 2005 Project: Apartment Building at McCarthy Boulevard Extension Project No.: ce.166 Technician: Mike Jones Boring No.: HA #1 Boring Location: South end of proposed Apartment Boring Method: Hand Auger Depth DCP Lab Data Soil Description and Remarks USCS Symbols Water NM (%) 200(% LL(%) PI (%) (ft) aV Table ft organic silty sand (top soil) 8 inches 2 feet 4-4-5 black highly organic silty sand (peat) 4 feet 3.4-3 F 6 feet 6-6 6 dark gray silty fine sand '$ u 8 feet vviner encoumere0 at 0 Teel CAROL[ NA 'ENGINEERS. PA Client: Steven D. Bell & Company CAROLINA ENGINEERS, P.A. P. O. Box 1573 New Bern, NC 28563 Phone (252)-613-2424 Fax (252)-G33-1370 Project: Apartment Building at McCarthy Boulevard Extension Technician: Mike Jones Boring Location: North end of proposed Apartment Date: Project No.: Boring No.: Sept. 12, 2005 ce.166 HA #2 Boring Method: Hand Auger Depth DCP Lab Data Soil Description and Remarks USCS Symbols Water NM(%) -2o0(% LL %) PL(% (fl) aV Table tt brown slightly silty poorly graded sand SP-SM 18 inche 2 feet 7-7-6 black highly organic silty sand (peat) 3 feet Q 4 feet 7-8-8 dark gray silly fine sand 6feet 6-6-7 v�T 8 feet vvaier encounterea at 5 teet CAROLINA ENGINEERS, P.A. P. 0. Box 1573 New Bern, NC 28563 Phone (252)-613-2424 Fax (252)-633-1370 Client: Steven D. Bell & Company Date: Sept. 12, 2005 Project Apartment Building at McCarthy Boulevard Extension Project No.: ce.166 Technician: Mike Jones Boring No.: HA #3 Boring Location: Northeast parking lot Boring Method: Hand Auger Depth DCP Lab Data Soil Description and Remarks USCS Symbols Water NM % 200 % LL % Pb % ft av - Table ft brown to orange clayey sand (fill material 2 feet 8-8-7 light tan poorly graded sand (fill material) SP s — 3 feet 4 feet 7-7-6 p b dark gray silty fine sand _V_ 6 feet 6-7-6 psi 8 feet ¢ boxing terminated at 8 feet Water encountered at 5 feet �QF W A'r Michael F. Easley, Governor 7CO William G. Ross Jr., Secretary r North Carolina Department of Environment and Natural Resources O Y Alan W. Klimck, P.E. Director Division of Water Quality August 15, 2006 McCarthy Court III, LLC Attn: Mike Bateman 300 North Greene Street, Suite 1000 Greensboro, NC 27401 Subject: Dear Mr. Bateman: Rn AUG 16 Z006 Stormwater Review SW7060612 McCarthy Court 3 Craven County This office received a Coastal Stormwater permit application and plans for the subject project on July 10, 2006. A preliminary review of the project indicates that before a State Stormwater permit can be issued the following additional information is needed. //-'7 �cJ sG t�ACLCt P—TlJ/>� {i 1 �s Cc.0 rod> I n1�v.ctc..ac�� 1. Please provide detailed narrative description of Stormwater treatment and management including drainage areas delineation. Please be specific about drainage areas, drainage paths and treatment. izevt T],A.'� i SiocmW&,TC — + t'�. - lacwoo�tnl�k.4z � 2. The Stormwater Management Permit Application Form shows Total Project Area to be 2.124 Acres, one Drainage Area (2.124 Acres?) and Project Built Upon Area of 45.67% while the Calculations for Stormwater Management shows Total Area of 1.44 Acres and Percent Built Upon of 67.36%. Please revise and show correct values. �3. SCalculationsA �n StoJw ter�ManagC Management Calculations S p Supplement were base on 67.36%(?) and SAIDA percentage of 2.75 as shown in calculations indicates that the Piedmont Table was used for the depth of 3 feet. Please revise SAIDA calculations using correct percentage and the Table for Coastal Counties (attached) using depth of Permanent Pool (4 feet). �� 2� �c� U6�.��. - T o% v1= I�th +� (gym L. / It appears that the Forebay Volume of is calculated as 2/0 of total Volume (Permanent + Temporary Pool Volume). Please reduce the Forebay Volume to 20% of Total Permanent Pool Volume. � 5. Please specify seeding on the Vegetative Shelf. ✓6. I'Y ease delineate Wetlands on plans or add a note that none exist r; .' dc_! i J7. Please provide two copies of signed and sealed revised sheets and calculations. The above requested information must be received in this office prior to September 15 , 2006 or your application will be returned as incomplete. The return of this project will necessitate resubmittal of all required items including the application fee. If you need additional time to submit the required information, please mail or fax your request for time extension to this office at the Letterhead address. North Carolina Division of Water Quality Washington Regional Office Phone (252) 946-6481 FAN (252) 946-9215 Customer Service Internet: h2o.encstate.nc.us 943 Washington Square Mall, Washington, NC 27889 1-877-623-6748 An Equal OpportunitylAff rmative Action Employer — 50% Recycledll0% Post Consumer Paper Noa` hCarolina atrrrally 4807-C Koger Blvd. Greensboro, NC 27407 Phone 336-218-8282 Fax 336-218-8010 TRANSMITTAL LETTER Date: August 23, 2006 To: Mr. Samir Dumpor North Carolina Department of Natural Resources Washington Regional Office 943 Washington Square Mall Washington, NC 27889 Project: McCarthy Court III Project No.: New Bern, NC RECEIVE® AUG 2'4 Z006 D V Q—WAR® 05-065 We Transmit: For Your: ( x ) herewith ( ) approval ( ) under separate cover ( x ) review & comment ( ) use The Following: Copies Date Description 2 Revised Site Civil Plans I Revised Stormwater Application Sheet 1 Revised BMP Supplemental form Sheet 1 Revised Stormwater Calculations 1 Revised Site Narritive Remarks: Samir- Attached you will find the above referenced materials for your review and approval. If you have questions or need additional information, please call. Thanks Copies: Sincerely, By: _Matt Johnson Matthew W. Johnson, P.E. Civil Engineer P:QW%IcCe by Court3UdminQg 21M6CPIans io Washingmn.xpl SITE NARRATIVE for McCARTHY COURT 3 STORMWATER MANAGEMENT AUG 2 4 2006 EROSION AND SEDIMENTATION CONTROL PLAN General The site is approximately 2.12 acres located off of McConnell Boulevard in New Bern just South of NC 17. The site is open and undeveloped with a few trees along the property line. The site grades generally slope down from northeast to southwest, with an elevation change of approximately 6 feet. Development Approximately 2.0 acres of the site will be disturbed to provide a 30 unit apartment building and associated parking and drive areas consisting of a total of 0.97 acres of built upon area. The site will also house a 4 unit garage for use of the residents. Storm runoff will be controlled by the use of Swales, Storm drains, and a wet detention pond. Soil Conditions Five to six inches of topsoil stripping across the site will be required. Some undercutting and stabilization of soils on the site may be required to obtain required compaction of future building pads and paved areas. The maximum cut and fill slopes should be no more than 2.5 to 1. Erosion Control Plans and Specifications All required devices are shown on the project plans and details. Additional information and requirements may be found on the project plans under "Erosion Control Notes". Seeding and earthwork specifications are found on sheet C2.3 of the drawings. Additional devices beyond those shown on the plan may have to be installed later due to local site conditions, or unanticipated problems. Stormwater Treatment Plan The site will be broken into two drainage areas DA-I and DA-2 with sub -drainage areas within DA-1 and DA-2. Drainage area 1 (DA-1) consists of 1.53 acres and will contain all of the 0.97 Acre of the proposed built upon area. All of DA-1 will flow to and pass through the proposed stormwater detention pond designed for 90% TSS removal. 3 sub -drainage areas of DA-1 totaling 0.72 acre, with 0.6 acre of BUA, will pass through a grass swale prior to reaching the pond, helping to control the pollutants within the stormwater runoff. The remainder of the 1.53 acres (total of 0.81 acre with 0.37 acre of BUA) will flow directly to the stormwater detention pond by use of stormdrains. Once treated by the stormwater detention pond, the reduced flow from the stormwater runoff will exit the site by a grass swale. Once offsite the flow will then enter in to an existing stormdrainage system. DA-2 will consist of the remaining 0.59 acre of the total 2.12 acres. The 0.59 acre will consist of all pervious areas that will completely bypass the pond due to grading restraints and exit the site by either sheet flow or grassed swales. Flow Summary - Pre -developed flow - 1 yr = 2.32 cfs Leaving site 10 yr = 8.07 cfs 100 yr = 15.92 cfs Post Developed flow -1 yr = 3.28 cfs to pond (1.53 ac) 10 yr = 7.88 cfs DA-1 100 yr = 13.47 cfs Routed Flow - from Pond Flow by passing - Pond DA-2 (0.59 ac) I yr = 1.13 cfs 10 yr = 5.62 cfs 100 yr = 11.33 1 yr = 0.76 cfs 10 yr = 1.44 cfs 100 yr = 2.07 cfs Total flow From 1 yr = 1.89 cfs Site Post 10 yr = 7.06 cfs Development 100 yr =15.54 cfs Construction Sequence < 2.32 cfs O.K. (81.47% of Pre Develop Flow) < 8.07 cfs O.K. (87.481/0 of Pre Develop Flow) Pond can Handle 100 yr Event O.K. The site will be developed according to the following sequence. Some deviations from this sequence may be required due to local site conditions, or unanticipated problems. These changes will be coordinated through the engineer and city inspections staff. All work must meet City of New Bern and NCDENR standards. A pre -construction meeting between the grading contractor and NCDENR and City of New Bern staff may be required. A copy of the permit and approved plans must be kept on the job site at all times. Additional pre -construction meetings with other interested parties may be required. 1. Install gravel construction entrance at the location shown on the plans. 2. Install pond, riser and barrel, silt fence, diversion berms, and other erosion control devices as shown on plans. . 3. Stabilize temporary measures, such as berms with temporary seeding and/or excelsior matting with in 21 calendar days of installation. 4. Clear site 5. Begin rough grading the site. 6. As grading progress, install swales and storm drains as grading permits . 7. Install inlet protection at all structures. 8. Fine grade parking lot and building pad. 9. Place Gravel on drives and parking lot/ 10. Begin Building construction. 11. Once building construction is complete, Remove all silt from temporary sediment basin and prepare for permanent wet detention pond use. 12. Pave drives and parking lot. 13. Remove Erosion control device and stabilize any areas that may have become unstable due to the removal of erosion control devices 14. Install temporary seeding on all disturbed areas within 15 working days of completion of any phase of the work or within 15 working days or 30 calendar days of reaching finished grades. i` JUN - 9 2006 DWQ-WARD SW7 0 6 0 612 To e_�10(� FINANCIAL RESPONSIBILITY/OWNERSHIP FORM /.� SEDIMENTATION POLLUTION CONTROL ACT 6/q /0& No person may initiate any land -disturbing activity on one or more acres as covered by the Act before this form and an acceptable erosion and sedimentation control plan have been completed an Land Quality Section, N.C. Department of Environment and Natural Resources. (Please Q71 the question is not applicable or the a -mail and/or fax information unavailable, place N/A in Part A. 1. Project Na H 2. Location of land -disturbing activity: CountyCQAy"t-:_� City or Townshi G , Highway/Street �'�ARiN✓ D Longitude 114 JUN 0 8 2005 3. Approximate date land -disturbing activity will commence:_ C'�a A Pk'Q-"�rAc- 4. Purpose of development (residential, commercial, industrial, institutional, etc.): 5. Total acreage disturbed or uncovered (including off -site borrow and waste areas): 2+ tJ — SECTION ONAL OFFICii 6. Amount of fee enclosed: $ ((7(j .The application fee of $50.00 per acre (rounded up to the next acre) is assessed without a ceiling amount (Example: a 9-acre application fee is $450). 7. Has an erosion and sediment control plan been filed? Yes No Enclosed 8. Person�71VV- ontact should erosion and sediment control issues arise during land -disturbing activity: Name E-mail Address Telephone TZ 0_'z- 19 E­A� Cell # Fax 2'37-- I c)l 9. Landowner(s) of Record (attach accompanied page to list additional owners): GL"O' �LL- SE l `�&D53C Z Z 15�1 Name Telephone Fax Number Current Mailing Addres City State Zip Current Street Address City State 10. Deed Book No. 1 Z 7G Page No. 004 Provide a copy of the most current deed. Z0-71 Part B. Person(s) or firm(s) who are financially responsible for the land -disturbing activity (Provide a comprehensive list of all responsible parties on an attached sheet): Name ( E-mail Address �_Odna h �11 1 � JiGi7�It-ra/aO Current Mailing Ad7c' s 2q " l City State Zip Telephone--_�56 - 7.3z - / � �L) Current Street Address City State Zip Fax Number S3% - Z 3z- 1 �)' 2. (a) If the Financially Responsible Party is not a resident of North Carolina, give name and street address of the designated North Carolina Agent: , Name I I I / A E-mail Address Current Mailing Addrdss Current City State Zip City State Zip Fax Number (b) If the Financially Responsible Parry is a Partnership or other person engaging in business under an assumed name, attach a copy of the Certificate of Assumed Name. If the Financially Responsible Party is a Corporation, give name and street address of the Registered Agent: Name of Registered Agent Current Mailing Address City E-mail Address Current Street Address Zip City Telephone Fax State The above information is true and correct to the best of my knowledge and belief and was provided by me under oath (This form must be signed by the Financially Responsible Person if an individual or his attorney -in -fact, or if not an individual, by an officer, director, partner, or registered agent with the authority to execute instruments for the Financially Responsible Person). I agree to provide corrected information should there by any change in the information provided herein. Type or print name Signature- Title or Authority Date e 1.lGX A'7 a a Notary Public of the County of State of North Carolina, hereby certify that �l�lCl"'�/ �j //�C�<(� appeared personally before me this day and being duly sworn acknowledged that the above form was executed by him. Witness•` O!lp"4 and notarial seal, this day of dMI �,�2007 9 No. Se .'OUB�' y y commission expires 3C C2/ l ral �3 -' McCarthy Court III, LLC Attn: Mike Bateman 300 North Greene Street, Suite 1000 Greensboro, NC 27401 Dear Mr. Bateman: Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality August 15, 2006 Subject: Stormwater Review SW7O60612 McCarthy Court 3 Craven County This office received a Coastal Stormwater permit application and plans for the subject project on July 10, 2006. A preliminary review of the project indicates that before a State Stormwater permit can be issued the following additional information is needed. 1. Please provide detailed narrative description of Stormwater treatment and management including drainage areas delineation. Please be specific about drainage areas, drainage paths and treatment. 2. The Stormwater Management Permit Application Form shows Total Project Area to be 2.124 Acres, one Drainage Area (2.124 Acres?) and Project Built Upon Area of 45.67% while the Calculations for Stormwater Management shows Total Area of 1.44 Acres and Percent Built Upon of 67.36%. Please revise and show correct values. 3. SAIDA Calculations in Stormwater Management Calculations Supplement were based on 67.36%(?) and SAIDA percentage of 2.75 as shown in calculations indicates that the Piedmont Table was used for the depth of 3 feet. Please revise SAIDA calculations using correct percentage and the Table for Coastal Counties (attached) using depth of Permanent Pool (4 feet). 4. It appears that the Forebay Volume of is calculated as 20% of total Volume (Permanent + Temporary Pool Volume). Please reduce the Forebay Volume to 20% of Total Permanent Pool Volume. 5. Please specify seeding on the Vegetative Shelf . 6. Please delineate Wetlands on plans or add a note that none exist. 7. Please provide two copies of signed and sealed revised sheets and calculations. The above requested information must be received in this office prior to September 15 , 2006 or your application will be returned as incomplete. The return of this project will necessitate resubmittal of all required items including the application fee. If you need additional time to submit the required information, please mail or fax your request for time extension to this office at the Letterhead address. North Carolina Division of Water Quality Washington Regional Office Phone (252) 946-6481 FAX (252) 946-9215 Internet: h2o.encstate.nc.us 943 Washington Square Mall, Washington, NC 27889 An Equal Opportunity/Affirmative Acton Employer — 50% Recycled110% Post Consumer Paper Customer Service 1-877-623-6748 n` hCaro oina tura�lif You should also be aware that the Stormwater Rules require that the permit be issued prior to any development activity. Construction without a permit is a violation of 15A NCAC 2H.1000 and North Carolina General Statute 143-215.1 and may result in civil penalties of up to $10,000 per day. Please reference the Stormwater Project Number above on all correspondence. If you have questions, please feel free to contact me at (252) 948-3959. Sincerely, Samir Dumpor Environmental Engineer Washington Regional Office cc: L. Allan Hill, PE, Triad Design Group (4807-C Koger Boulevard, Greensboro, NC 27407 Washington Regional Office