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HomeMy WebLinkAboutSW8040916_HISTORICAL FILE_20150513STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW YUlKJY l,& DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE _�P)v5_05i3 YYYYMMDD STATE OF NORTH CAROLINA Department of Environmental and Natural Resources 127 Cardinal Drive Extension Wilmington, North Carolina 28405 (910) 796-7215 FILE ACCESS RECORD SECTION TIME/DATE NAME /r? . 17 � REPRESENTING Guidel as 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 -today program obligations_ Please read carefully the following guidelines signing the form: 1. Due to the large public demand for file access, we. request that you call at least a day in advance to schedule an appointment to review the files. Appointments will be scheduled between 9�00am and 3:00pm. Viewing time ends at 4:45pm. Anyone arriving without an appointment may view the ff3es to the extent that time and staff' supervision_ is available_ 2. You must specify files you want to review by facility 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 made by check, money order,- or casli_at the reception desk. Codes totabn05.00 or more can be invoiced for your convenience_. 4. FILES 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 ofthese as is a misdemeanor for which you can be. fined up to $500.00. No briefcases, lame totes, ate, are emutted in the 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. FA91LITY NAME 2. ,1%I 3. 4. Signature and Name of Fir tusinessr Please attach a business card to this form COPIES MAME -,?-I PAID S.-Adtnin.file access COUNTY Date( Time In Time Out " "_. INVOICE Casmer, Jo From: Casmer, Jo Sent: Wednesday, May 06, 2015 11:12 AM To: 'genna.porter@wilmingtonnc.gov' Subject: Wilmington Police Headquarters Attachments: SW8 040916 Permit.pdf; SW8 040916 Plan Revision.pdf Genna As requested, attached is the Stormwater Permit issued in 2004; please note that, although it indicates an expiration date of 10/1/2014, the expiration date has been extended to 10/1/2018 due to Session Law 2010-177. 1 have also attached a Plan Revision issued at a later date which is self-explanatory. fo Casmer Administrative Assistant for DEMLR/Stormwater Section NC Department of Environment & Natural Resources 127 Cardinal Drive Extension Wilmington, NC 28405 Phone: (910) 796-7336 Fax: (910) 350-2004 Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties • rl��i• 3 13a;r' .:1..•0 8VV�� �?�, t !T. ' �{ `af °,t��_ .t•r4-fir+t: .. ;.il ' O � ' t i .+ � 1 ,1C'!i'r'3-. i,lid � .•ji' f .. :''i +; t ' C .','1. _. ..r�',. !� .its ,1�(�'.',.17 r .}r • o�0� w aCID U r�AQ� C 0 Y August 15, 2006 Mr. Sterling Cheatham, City Manager City of Wilmington PO Box 1810 Wilmington, NC 28402 Subject: Approved Plan Revision Wilmington Police Headquarters Stormwater Project No. SW8 040916 New Hanover County Dear Mr. Cheatham: 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 On August 3, 2005, the Wilmington Regional Office received a request to revise the approved plans for Stormwater Management Permit Number SW8 040916. The detail sheet for the proposed retaining wall (sheet C8.4) was not included with the revised plans. On August 3, 2006, the detail sheet (C8.4) was submitted. The revisions include the addition of a retaining wall at the west end of the wet detention pond. It has been determined that a formal permit modification is not required for the proposed changes. We are forwarding you an approved copy of the revised plans for your files. Please replace the old approved plan sheets with the new ones enclosed, titled "2005 Reissued Documents Wilmington Police Headquarters". Please be aware that all terms and conditions of the permit issued on October 1, 2004, remain in full force and effect. Please also understand that the approval of this revision to the approved plans for the subject State Stormwater Permit is done on a case -by -case basis. Any other changes to this project must be approved through this Office prior to construction. The issuance of this plan revision does not preclude the permittee from complying with all other applicable statutes, rubs, regulations or ordinances which may have jurisdiction over the proposed activity, and obtaining a permit or approval prior to construction. If you have any questions concerning this matter, please do not hesitate to call me at (910) 796-7335. Sincerely, Linda Lewis Environmental Engineer II ENBlarl: S:IWQSISTORMWATERIREVISION1040916.aug06 cc: Steve Leimer, P.E., WK Dickson Beth Wetherill, New Hanover County Engineering City of Wilmington Development Services Tony Roberts, New Hanover County Building Inspections Linda Lewis Wilmington Regional Office Central Files One No;thCarolina Afla!urvllly North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Internet: www.ncwaterqualityorg Fax (910) 350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper !9' K WD�CKSON community infrastructure consultants August 2, 2006 Ms. Linda Lewis NC Division of Water Quality NCDENR 127 Cardinal Drive Wilmington, North Carolina 28405 RE: Wilmington Police Headquarters WKD Project No. 00720.80.WL Dear Ms. Lewis: Enclosed find two copies of Plan Sheets C4.1 (Grading Plan) and C8.4 (Details) for the Wilmington Police Headquarters Project. These are sent per your request. The Grading Plan shows a wall located on the west side of the stormwater pond. The wall was added at the request of the City of Wilmington to allow a maintenance vehicle to drive around the pond. The Detail sheet shows the Modular Block Retaining Wall Detail. Please note that the wall has less than 2 feet of exposed height. The base of the wall is around elevation 20.5 to 21.5, which is well above the high water level of 16.6 and normal water level of 14.6. We note that these drawings show the pond as it was designed to be constructed in July of 2005. The City of Wilmington modified the outside downstream banks of the pond by adding rip rap protection, but the interior of the pond remained in its original location and size with vegetated slopes. To obtain drawings for the downstream stabilization, please contact Gerald Devito at 910-341-7808. Sincerely, W. K. Dickson & , Inc. Z 7U Steve Leimer, P.E. C. Gerald Devito, COW w/encl. Denise Fruend, WKD Roger Leeson, LS3P File 00720.80.wl w/encl. 909 Market Street Wilmington, NC 28401 Tel. 910.762,4200 Fax 910.762.4201 www.wkdickson.corn P North Carolina • South Carolina • Georgia . Florida RE: SW8 040916 Wilm. Police HQ Plan Revision Subject: RE: SW8 040916 Wilm. Police HQ Plan Revision From: "Steve Leimer" <sleimer@wkdickson.com> Date: Fri, 28 Oct 2005 11:40:20 -0400 To: "Linda Lewis" <linda.lewis@ncnlail.net> Thanks Linda, the inside of the pond will be vegetated. This pond has a back slope on the north side similar to a dam. It is only the back slope that we need to armor. This will prevent soils from moving through the rubble fill. Steve Leimer, P. E. WK Dickson & Co., 910-762-4200 Direct: 910.442.1850, F: 910,762.4201, M: 910,512,1332 -----Original Message ----- From; Linda Lewis [mailto:linda.lewis@ncmail.net} Sent: Friday, October 28, 2005 11:06 AM To: Steve Leimer Subject: Re: SW8 040916 Wilm. Police HQ Plan Revision Thanks for the update, Steve. One thing to keep in mind, the Division does not allow the use of artificial armoring for pond slopes. They must be vegetated from the permanent pool up to at least the temporary pool elevation. Above that, they can be armored or have a retaining wall. I discussed this with Denise via earlier emails. Linda Steve Leimer wrote: ILinda, T am responding to your email. to Denise regarding the change to I the pond for the Wilmington Police HQ. During construction of the pond, it was discovered that the area is an old dump site from the brick factory that used to occupy the land. The area was filled with brick, concrete block and other rubble. As a Iresult, we are in the process of designing a solution to stabilize the I slopes of the pond. The pond shape and size will not change, but we intend to armor the downstream back slope of the pond with rip rap and a geotextile fabric. I therefore request that you ignore the submittal regarding the change to the pond. we will submit a new drawing with the appropriate details as soon as we finalize the plan. That is expected to be early next week. Thank you. /Steve Leimer, P. E./ */WK Dickson & Co, Inc./* /909 Market St.//, //Wilmington//, //NC// //28401//, 910.762.4200/ 1 of 2 10/28/2005 1 1:54 AM Re: SW8 040916 Wilm. Police 1-IQ Plan Revision Subject: Re: SW8 040916 Wilm. Police HQ Plan Revision From: Linda Lewis <linda.lewis@ncmail.net> Date: Fri, 28 Oct 2005 11:08:22 -0400 To: Steve Leinler <sleimer@wkdickson.com> Thanks for the update, Steve. One thing to keep in mind, the Division does not allow the use of artificial armoring for pond slopes. They must be vegetated from the permanent pool up to at least the temporary pool elevation. Above that, they can be armored or have a retaining wall. I discussed this with Denise via earlier emails. Linda Steve Leimer wrote: Linda, I am responding to your email to Denise regarding the change to the pond for the Wilmington Police HQ. During construction of the pond, it was discovered that the area is an old dump site from the brick factory that used to occupy the land. The area was filled with brick, concrete block and other rubble. As a result, we are in the process of designing a solution to stabilize the slopes of the pond. The pond shape and size will not change, but we intend to armor the downstream back slope of the pond with rip rap and a geotextile fabric. I therefore request that you ignore the submittal regarding the change to the pond. We will submit a new drawing with the appropriate details as soon as we finalize the plan. That is expected to be early next week. Thank you. /Steve Leimer, P. E./ */WK Dickson & Co, Inc./* /909 Market St.//, //Wilmington//, //NC// //28401//, 910.762.4200/ /Direct: 910.442.1850, F: 910,762,4201, M: 910.512.1332/ 1 of 1 10/28/2005 11:08 AM SW8 040916 Wilm. Police HQ Plan Revision Subject: SW8 040916 Wilm. Police HQ Plan Revision From: Linda Lewis <linda.lewis@ncmail.net> Date: Tue, 04 Oct 2005 08:24:05 -0400 To: Denise Freund <dfreund@wkdickson.com> Denise: The Division received a revision to the approved plans for the subject project on August 3, 2005. Unfortunately, the detail sheet showing the retaining wall in relationship to the pond was not part of the plan set 1 recevved (Sheet C8.4). Please submit 2 copies of sheet C8.4. Thanks, Linda 1 of 1 10/4/2005 8:27 AM Re: Police Headquarters, Revised Erosion and Sediment Control Plan Subject: Re: Police Headquarters, Revised Erosion and Sediment Control Plan From: Gerald,Devito@wlImingtonnc.gov Date: Fri, 16 Sep 2005 11:27:08 -0400 To: carol.niiiler@ncmai].net CC: Steve.aridges@wilmingtonnc.gov, David. Cowell@ci.wilmington.nc.us, Linda.Lewis@ncniai1.net, sleimer@wkdickson.com, jholben@cconstruction.net, rogerleeson@ls3p.com, davidreeder@ls3p.com Carol, I had talked to you by phone a couple of weeks ago and asked for your approval to revise the Erosion and Sediment Control plan for the Police Headquarters site. You agreed that, given the conditions I had relayed to you, revising the stormwater pond outlet and reducing the hydraulic load on the downstream berm was necessary. Last Monday afternoon, September 12, with a hurricane approaching, the project team met to discuss resolution of the stormwater pond. The last order of business, the Contractor requested and received the authority to construct a temporary outlet to control the discharge of stormwater through the pond. The Engineer, W. K. Dickson, is revising the Plan to reflect the modified outlet and any comment from your office will"be immediately implemented. There is yet no solution for constructing a stable stormwater pond but solutions we are studying retain similar configuration and volume as the designed and permitted pond. However, the location of the two alternatives moves the pond away from wetlands and encroaches on future impervious area. When the final solution is selected, the revision will be submitted to the State and City prior to implementing. Please understand, the revision was performed with the urgency of an approaching hurricane and is not in any way circumventing your authority. We are fortunate that the contractor stood ready with stock piled materials and was able to perform the work without prior notice. The contractor's weather station recorded 10 inches of rain and under the associated loading, the berm would have likely been over -topped and collapsed without the controlled outlet. Respectfully, Gerald DeVito, P.E City of Wilmington 341-78CS of] 9/16/2005 1 1:34 AM LETTER OF TRANSMITTAL W�Wl< DICKSON community Infrastructure consultants 909 Market Street Wilmington, North Carolina 28401 TO: Linda Lewis RECEIVED NCDWQ NCDENR BY: 910.762.4200 tel. 910.762.4201 fax DATE: 8/2/05 RE: Wilmington Police Headquarters PROJECT NO: WKD # 00720.80.WL /-\ We are sending via: ❑ Overnight ❑ Regular Mail ❑ Pick-up ® Hand Delivered The following items: ❑ Correspondence ® Plans ❑ Specifications ❑ Other as listed below: COPIES DATE NO. DESCRIPTION 2 Plan Sheets: Cover, SV1.1, C1.1, C1.2, C3.1A, C4.1, C4.2, C4.3, C4.4, C8.1, C8.5 THESE ARE TRANSMITTED as checked below: ❑ For Approval ❑ As Requested ❑ Approved as Submitted ❑ Returned for Corrections ® For Your Use ❑ For Review and Comment ❑ Approved as Noted ❑ Forward to Subcontractor REMARKS: Linda - As we discussed via e-mail in April, enclosed please find two copies of the updated plans for the Wilmington Police Headquarters project. As we discussed, there have been some minor revisions to the parking area and a retaining wall has been added to the west end of the stormwater pond to allow for clearance between the fill slope from the pond and the property line. Your concern _ at the time was with respect to the retaining wall and whether it would be in contact with the pond water. As you can see from the enclosed drawings, the wall is on the outside slope of the pond and will not be in contact with the pond water. Please let me know if you have any questions or _--require require additional information. Thank you. COPY TO: , File SIGNED: Denise L. Freund, P.E. Ci Wil hi�ti •''A . WILMINGTON City of Wilmington North Carolina Mr. Rick Shiver; Regional Supervisor NC DEHNR Division of Water Quality 127 Cardinal Drive Ext. Wilmington, N.C. 28405 910-395-3900 910-350-2004 fax October 1, 2004 Re: Storm Water Quality Police Headquarters, 30" Water and 20" SS Relocation City of Wilmington, New Hanover County Dear Mr. Shiver: Development Services 305 Chestnut Street PO Box 1810 Wilmington, NC 28402-1810 (910) 341-7873 tdd This project will not require the Water Quality permit because this project will not create any additional impervious areas. The project is to be on seven hundredth block of Bess St and on the proposed Police headquarters site. The City has submitted an Erosion & Sedimentation application to Division of Land Resources. If you have any questions or require additional information, please call me at 910-341-5882. Truly, RECEIVED azz� OCT 0 4 2004 Alvin G. McCollum PE BY: Engineer 11 Community Development Planning Engineering Development Management (910) 341-7836 telephone (910) 341-3258 telephone (910) 341-7807 telephone (910) 254-0900 telephone (910) 341-7802 facsimile (910) 341-7801 facsimile (910) 341-5881 facsimile (910) 341-3264 facsimile PSWK WDICKSON community infrastructure consultants September 30, 2004 Ms. Linda Lewis NC Division of Water Quality NCDENR 127 Cardinal Drive Wilmington, North Carolina 28405 RE: Wilmington Police Headquarters WKD Project No. 00720.80.WL Dear Ms. Lewis: SEP 3 U ZOa4 This letter is in response to design review comments dated September 30, 2004. Original comments have been noted, followed by our response in bold. Comment: Please expand the table of areas and volumes in the calculations to include the area and volume at elevation 16.6 (the temporary storage elevation). There is nothing in the calculations to support your conclusion that the pond provides 20,593 cubic feet of volume at elevation 16.6. Please show the calculations you used to arrive at that conclusion. Response: A calculation sheet is provided showing the cumulative volume at elevation 16.6 is 20,593 cf. Comment: Please dimension the buildings, or provide individual square footages for each building shown on the pavement & layout plan. I am trying to keep the number of sheets I will be keeping in the file as part of the approved plan set to a minimum, so if you can add the building information to the pavement & layout sheet, that would be very helpful. Response: The buildings have now been dimensioned. The outer building wall face has been dimensioned. There are two lines shown for building face; the first floor, and second floor. The outermost wall is the one shown on the plans with dimensions. Two revised sheets C3.1A are provided. If you need additional information, please feel free to give me a call. Sincerely, W. K. Dickson & Co., Inc. XA4_W'AAO?�� Mark N. Hargrove, P.E. 909 Market Street Wilmington, NC 28401 Tel. 910.762,4200 Fax 910.762.4201 www.wkdickson.com North Carolina • South Carolina • Georgia • Florida l Wilmington Police HQ SW8 040916 Subject: Wilmington Police HQ SW8 040916 From: Linda Lewis <Linda.Lewis@ncmail.net> Date: Thu, 30 Sep 2004 12:35:06 -0400 To: Mark Hargrove' <mhargrove@wkdickson.com> Mark: The Division received an Express Stormwater Permit application for the subject project on September 30, 2004. The application is incomplete. Please provide the following items prior to October 7, 2004, to continue the review: 1. Please expand the table of areas and volumes in the calculations to include the area and volume at elevation I6.6 (the temporary storage elevation). There is nothing in the calculations to support your conclusion that the pond provides 20,593 cubic feet of volume at elevation 16.6. Please show the calculations you used to arrive at that conclusion. 2. Please dimension the buildings, or provide individual square footages for each building shown on the pavement & layout plan. I am trying to keep the.number of sheets I will be"ikeeping in the file as part of the approved plan set to a minimum, so if you can add the building information to the pavement & layout sheet, that would be very helpful. Thanks, Linda i of 1 10/4/2004 3:59 PM �ex. �WK LETTER OF TRANSMITTAL @VDICKSON community infrastructure consultants 909 Market Street Wilmington, North Carolina 28401 910.762.4200 tel. 910.762.4201 fax TO: Linda Lewis DATE: 9/30/04 / NCDWQ NCDENR RE: Wilmington Police Headquarters fir. PROJECT NO: WKD # 00720.80.WL We are sending via: ❑ Overnight ❑ Regular Mail ❑ Pick-up ® Hand Delivered The following items: ❑ Correspondence ❑ Plans ❑ Specifications ® Other as listed below: COPIES DATE NO. DESCRIPTION 2 Plan Sheets: Cover, SV1.1, C1.1, C1.2, C3.1A, C4.1, C4.2, C4.3, C4.4, C8.1, C8.5 2 Stormwater narrative and stormwater calculations 2 Permit Application: 1 original and 1 copy 1 Check for $4,000 for express permitting ,5,c 7 1PTATF,� � SEP 3 0 Z0134j 1 THESE ARE TRANSMITTED as checked below: i� .. _W I ® For Approval ❑ As Requested ❑ Approved as Submitted ❑ Returned for Corrections ❑ For Your Use ❑ For Review and Comment ❑ Approved as Noted ❑ Forward to Subcontractor REMARKS: COPY TO: File SIGNED: /!/r Mark N. Hargrove .E. ITY 8F WILM- INGTQNi'• PO BOX 1810 • WILNIINGTON, N628•402.1810CHECK NO. ..75774 DATE PO# INVOICE,-- PROJ DESCRIPTION AMOUNT ?9/14/2004 E00321 PErRMIT 0MF366 EXPRESS STORMWATER PERMIT 4,000.00 Tr!x s .. - i .fir„ ..•J '- - NCOENR-,DIVISI0N-Q1" WATER QUALITY 953018 *#4, 000. 00 gr IYSC.T[IIR� �I „i j _ M; i 'NARNINGI THIS.MICA NIJMBEA BLEEnS THRU LIGH T iI INK TJ TNEL- BACK SIiSE ��j«�CTtYT7Z"�y)yl'[(��} L�"sG��•+�lR_�� ���'1L��!.�[�1�3`.1+1[3�h� . CITY OF 1P��LiU�I��VGTo� WACHOVIABAMK OF NORTH. CAF?OUNA, NA, WILN?tINGTON, 1 75774 N.C. ti PO BOX 1810 se-219 : - WILMINGTON, NC 28402-1S10 53fl. .• _ -F.Y '�-_ rVb'�,A,' .��I��!►�i-�;iC7g1 �."•h 3 953018 09116tO4 17.5774 � $*-§-**4•, 000: GO t 'FOUR- THOUSAND AND 00/ 100. DOLLARS This, dis6ursernwilla�sbeenapw),.,'YiasrBr17i8:17yt!{ Localuu:enmerf PAY-d5e1 and -Fiscal Cont cit ACT. '. TO THE ^ ORDER . GENERAL ACCOUNT ' OF. • NC DENR—DIVISION O�•• WATER QUALITY �.. 1617 MAIL SERVICE CENTER ..RALEIGH NC 27699-1617 . • - - - vtli147, lot,� ._ ,� L ._—,...�-. •.N.U'IIC11.2kG 3rllar,iuF{F �'A 140 �iSi'. �`G7—� .r✓-Y� h -/3' �t�,`.•�;,•���,�uy��jTHIS 00CL'MEFIf FIn.^,A LIIC.RG:�G4ATUfi1=LINE 1�;ILl,Jl�t.rn+_+r•.. rl�n,y;!(..,r„r,•��JL;t�s;,,__T"1.=GiL1Lli�- ii2�rllJL._t�'Y:LL'f,i'Stl Wilmington Police HQ SW8 040916 Subject: Wilmington Police HQ SW8 040916 From: Linda Lewis <Linda.Lewis@ncmail.net> Date: Thu, 30 Sep 2004 12:35:06 -0400 To: Marls Hargrove <mhargrove@wkdickson.com> Mark: The Division received an Express Stormwater Permit application for the subject project on September 30, 2004. The application is incomplete. Please provide the following items prior to October 7, 2004, to continue the review: 1. Please expand.the table of areas and volumes in the calculations to include the area and volume at elevation 16.6 (the temporary storage elevation). There is nothing in the calculations to support your conclusion that the pond provides 20,S93 cubic feet of volume at elevation 16.6. Please show the calculations you used to arrive at that conclusion. 2. Please dimension the buildings, or provide individual square footages for each building shown on the pavement & layout plan. I am trying to keep the number of sheets I will be(:keeping in the file as part of the approved plan set to a minimum, so if you can add the building information to the pavement & layout sheet, that would be very helpful. Thanks, Linda C; c 1 of 1 9/30/2004 12:35 PM 1 09/09/2004 13:36 9107624201 WK DICKSON PAGE 01 LO a VwI< FACSIMILE iODICKSON community introsrrucrure consultant; 909 Market Street Wilmington, North Carolina 26401 910.762.4200 tel DATE: Z&/'V y TO: C.qn� rc'n (0eaU"L ►'- AFFILIATION: xC-'Ojk)Q r ' FAX NO: JOB NO.: E0?AD -&0 -&1 � RE: �� • ! war Kt`1,_ .f D (a C __ MESSAGE: st, ,ti; 6 r-; ) SEC FROM., A A �'4 4C "V W.K. Dickson & Co., Inc. 910.762.4200 tel. 910,76,2.E+2a1 fax Number of pages including cover sheet:31 SS nP r^r*".T 910,762.4201 fax 09/00/2004 13:36 9107624201 WK DICKSON PAGE 02 V �9 4- ' PS L HILTS] ST z m CLI La z 9R > CAMP ON ST NpR�� LiV). Sl TE U :z ASHF ST ri � v) � N M H S BESS ST HoWA D ST z HOWARD S z n n 4 x {„ N TAYLI�R 0 � � TAYLAR ST NIXON ST S _2� ST LOCATION MAP N.T,S, •t ,fir yf'if 09/08/2004 13:36 9107624201 WK DICKSON PAGE 03 Stormwater Narrative for Express Permitting Wilmington Police Headquarters WKD#: 00720.80.WL', ,lr . .September 8 2004', GENERAL The City of Wilmington plans to develop the property commercially with a new police headquarters. The site is located at 615 Bess Street in Wilmington. The majority of the site is moderately flat and drains by means of sheet flow towards the existing C.S.X. railroad that runs along the eastern and western boundary of the proposed disturbed area. The remaining portion of the existing site drains by sheet flow to an existing ditch that runs along the southerly boundary of the proposed disturbed area. PROPOSED IMPROVEMENTS u Proposed improvements will involve the construction Hof a 9.75 acre office development and will include the construction of a wet detention basin. This basin will improve water quality for post development runoff as well as ensure that our post -development flow (13.94 cfs) is less that that our pre -development flow (14.32 cfs) for the 10-year event. Ali of the surface water runoff from the developed impervious areas will be sent to a proposed wet detention system. DRAINAGE CONSIDERATIONS Runoff will be conveyed to the detention system by means of piped drainage systems. These piped systems will ensure positive drainage to the pond. The systems will be designed to transport the runoff from the 10-year storm event to the pond. The grades shown on the plans are final grade elevations. The plan currently proposed shows that the imperviousness of the drainage area being conveyed to the pond will be approximately 72%. During construction silt fence, riprap aprons, inlet protection, and construction entrances will be place in critical areas as directed by the Erosion Control Plan. All design criteria is based on City of Wilmington stormwater standards. 4 1 PERMITS REQUESTED We would like to submit plans for an express permit for the detention pond and for erosion control. Wilco. PD HQ Subject: Wilm. PD HQ From: Carol Miller <Carol.Miller@ncmail.net> Date: Thu, 09 Sep 2004 09:33:09 -0400 To: Cameron Weaver <Cameron.Weaver@ncmai1.net> Cameron, Do they want to express the project with LQS. There was a ? mark there, so I was not sure. Since public monies are involved, it would be our jurisdiction. Let me know when they plan to schedule it or have them contact me directly. Also, just a reminder since we no longer have our netscape calendar, I will be on leave from 9/27 through 10/1. Dan is my express review back-up, so if anything comes up, please contact him during my absence. Thanks, Carol 1 of 1 9/9/2004 9:35 AM LETTER OF TRANSMITTAL IftWK RVDICKSON community infrastructure consultants 909 Market Street Wilmington, North Carolina 28401 910.762,4200 tel. 910.762.4201 fax TO: Linda Lewis NCDWQ NCDENR r�— DATE; 9/30/04 ..r 1 RE: Wilmington Police Headquarters PROJECT NO: WKD # 00720.80.WL�` We are sending via: ❑ Overnight ❑ Regular Mail ❑ Pick-up N Hand Delivered The following items: ❑ Correspondence ❑ Plans ❑ Specifications N Other as listed below: COPIES DATE NO. DESCRIPTION 2 Plan Sheets: Cover, SV1.1, C1.1, C1.2, C3.1A, C4.1, C4.2, C4.3, C4.4, C8.1, C8.5 2 Stormwater narrative and stormwater calculations 2 Permit Application: 1 original and 1 copy 1 Check for $4,000 for express permitting SEP 0 2004 THESE ARE TRANSMITTED as checked below: N For Approval ❑ As Requested ❑ Approved as Submitted ❑ Returned for Corrections ❑ For Your Use ❑ For Review and Comment ❑ Approved as Noted ❑ Forward to Subcontractor REMARKS: W COPY TO: File SIGNED: /l/r Mark N. Hargrove .E. RE: COW Police HQ Subject: RE: COW Police HQ From: "Mark Hargrove" <mhargrove@wkdickson.com> Date: Thu, 30 Sep 2004 12:10:59 -0400 To: "Cameron Weaver" <Cameron.Weaver@ncmai1.net> Is there no way to write a receipt? -----Original Message ----- From; Cameron Weaver lmailto:Cameron.Weaver@ncmail.net] Sent: Thursday, September 30, 2004 12:05 PM To: Mark Hargrove Subject: Re: COW Police HQ I can fax you a copy of your cover page that has been date stamped and a copy of the check back to you. Mark Hargrove wrote: We just dropped off the City of Wilmington Police HQ project for express permitting to Linda. The City has asked if we could get a receipt for the application fee. Is that possible? Mark N. Hargrove, PE Project Manager - Wilmington Office WK Dickson & Co., Inc. (910)-762-4200 Fax (916)-762-4201 P ae uc 7 1 of 1 9/30/2004 12:20 PM North Carolina Department of Environment and Natural Resources Wilmington Regional Office Michael F. Easley, Governor William G. Ross Jr., Secretary September 30, 2004 RECEIPT FOR CHECK Check #175774 in the amount of $4000 was received from: City of Wilmington P.O. Box 1810 Wilmington, NC 28402 For the following Express Permitting project: City of Wilmington Police Headquarters The check was delivered by a representative of WK Dickson. Post -its Fax Note 1 Vn EL NCDENR 127 Cardinal Drive, Wilmington, North Carolina 28405 Phone:910-395-3900 1 FAX:910-350-2004 1 Internet: www.ennstate.nc.us AN EQUAL OPPORTUNITY 1 AFFIRMATIVE ACTION EMPLOYER 150% RECYCLED 1 10% POST CONSUMER PAPER P. 1 COMMUNICATION RESULT REPORT ( SEP.30.2004 1:01PM ) * '* TTI NCDENR WIRO FILE MODE OPTION ADDRESS (GROUP) RESULT PAGE ---------------------_-----------------------------------------___------------------------------- 219 MEMORY TX . 9-9107624201 OK P. 1/1 REASON FOR ERROR E-1) HANG UP OR LINE FAIL E-3) NO ANSWER North Carolina Department of Environment and Natural Resources Wilmington Regional Office ' Michael F. Easley, Governor William G. Rosr, Jr., Secretary RECEIPT FOR CHECK E-2) BUSY E-4) NO FACSIMILE CONNECTION September 30, 2004 Check #175774 in the amount of $4000 was received from: City of Wilmington P.Q, Box 1810 Wilmington, NC 28402 For the following Express Permitting project: City of Wihington Police Headquarters The check was delivered by a representative of WK Dickson. State Stormwater Management Systems Permit No. SW8 permit# 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 The City of Wilmington, NC Wilmington Police Headquarters 615 Bess Street, New Hanover County FOR THE construction, operation and maintenance of a wet detention pond 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 October 1,'2014, and shall be subject to We' 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 in Section 1.6 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 250,000 square feet of impervious area. 3. The tract. will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. 6. The following design criteria have been provided in the wet detention pond and Page 2of7 State Stormwater Management Systems Permit No. SW8 permit# must be maintained at design condition: .;s a. Drainage Area, acres: Onsite, ft Offsite, ft2: b. Total Impervious Surfaces, ft2: C. Design Storm, inches: d. Pond Depth, feet: e. TSS removal efficiency: f. Permanent Pool Elevation, FMSL: g. Permanent Pool Surface Area, ft2: h. Permitted Storage Volume, ft3: i. Temporary Storage Elevation, FMSL j. Controlling Orifice: k. Permitted Forebay Volume, ft3: I. Receiving Stream/River Basin: M. Stream Index Number: n. Classification of Water Body II. SCHEDULE.OF COMPLIANCE 7.92 349,309 0 250,000 1.0 7.5 90% 14.6 8,580 20,593 16.6 2" 0 pipe 3,455 Smith Creek 1 Cape Fear C PF 17 18-74-63 "C Sw" 1. The storrnwater management system shall be constructed in its 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. 3. The perrhittee 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. C. MowinQ and revegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of outlet structure, orifice device, flow spreader, catch basins and piping. g. Access to the outlet structure must be available at all times. r, 4. Recordsyof maintenance activities must be kept and made available upon Page 3 of 7 State Stormwater Management Systems Permit No. SW8 permit# request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. :i 5. Decorative spray fountains will be allowed in the stormwater treatment system, subject to the following criteria: a. The fountain must draw its water from less than 2' below the permanent pool surface. b. Separated units, where the nozzle, pump and intake are connected by tubing, may be used only if they draw water from the surface in the deepest part of the pond. c. The falling water from the fountain must be centered in the pond, away from the shoreline. d. The maximum horsepower for a fountain in this pond is 118 horsepower. 6. 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 a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an =appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 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. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 10. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is defined as all property owned by the permittee, fog which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 12. 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. 13. The Director may notify the permittee when the permitted site does not meet one Page 4 of 7 State Stormwater Management Systems Permit No. SW8_permit# or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a'formal permit transfer request to the Division of Water Quality, accompanied by a completed name/ownership change form, 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. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. 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) having 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, includingsthose as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 5. The permittee grants DEN Staff permission to enter the property during normal businesshours 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. 8. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 9. The permittee shall notify the Division any name, ownership or mailing address changes Within 30 days. Permit issued this the 1 st day of October 2004. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Nan W. KlimeK, N.�., Uarector Division of Water Quality By Authority of the Environmental Management Commission Wilmington Police Headquarters Page 5 of 7