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Home My WebLink AboutSW4080503_HISTORICAL FILE_20111220STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS I�HISTORICAL FILE DOC DATE AOZIA_a'� YYYYMMDD Homewood, Sue From: Homewood, Sue Sent: Tuesday, December 20, 2011 1:55 PM To: 'John Lipka' Subject: RE: Mocksville Inspection & Report Review Hello John, I'm very sorry that the last month has been extremely busy for me and I was unable to review the annual report and the repairs to the site in a timely manner. The report looks great and Robert Patterson & I went by to see the site yesterday and it looks terrific. The repairs and maintenance work conducted are a model of a perfect response to a violation letter from DWQ. Please pass my comments on to Primary Care of Mocksville/Wake Forest Baptist Medical Center and thank them for their cooperation and attention to bringing this site back into compliance. Happy Holidays. Sue Homewood NC DEN Winston-Salem Regional Office Division of Water Quality 585 Waughtown Street Winston-Salem, NC 27107 Voice: (336) 771-4964 FAX: (336) 771-4630 E-mail correspondence to and from this address may be subject to the North Carolina Public Records taw and may be disclosed to third parties. From: John Lipka [mailto:jlipka@LPK-Consulting.com] Sent: Wednesday, November 30, 2011 8:25 AM To: Homewood, Sue Cc: 'Leslie Caskey' Subject: Mocksville Inspection & Report Review Sue, Just checking in on status of your review for Mocksville site. Thanks, John D. Lipka, PE .L.PK_Consultinb, PA Land & Infrastructure Development Solutions 7750 Seasons Hollow Road Lewisville, NC 27023 Office: (336) 945-0302 Mobile: (704) 936-7406 ilipka a,LPK-Consulting.com This email (including any attachments) is confidential and may be legally privileged. If you are not an intended recipient or an authorized representative of an intended recipient, you are prohibited from using, copying or distributing the information in this email or ID: 75 Resoluti On customer side, not on City side. Ran T L on: water into c eanout an all was open. Fieldl: #Name? Fieid9: #Name? Field2: #Name? — -- Fieldl0: #Name? Field3: #Name?-- Fieldll: #Name? StreetWhite -..._- Nam e: Reviewe Morgan Huffman Cross .... - ..... Street Field13: '#Name? Compl Back up _ - - aint: NOV: #Name? ID: 76 Resoluti Cut street and replaced manhole ring and - -- - on: lid. Filled around with crusher run. Fieldl: #Name? :__. - Fieid9: - ame? #N Field2: #Name? -- — Field10: �#Name? Field3: #Name? -- - - I Fieldll: _ _. #Name? Street E Main Name: Reviewe Morgan Huffman d by. Cross I'Park ------- —__.__ _� Street Field13: ,#Name? Compl I Broken Manhole lid aint: Field7: I#Nam e? ID: - 77 - ._.... ..... _... _ Resoluti Made 4" sewer tap Fieldl: - - #Name? - on: . - Field9: #Name? Field2: #Name?. Field10: .#Name? Field3: #Name? - Fieldll: #Name? Street Warner — —. — _. Name: Reviewe 'Morgan Huffman Cross Street Fieldl3: #N ame? Compl Make sewer tap aint: NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary December 20, 2011 Mr. Tim Bell Wake Forest University Baptist Medical Center Medical Center Blvd., Winston-Salem, NC 27157 Subject: Stormwater Permit No. SW4080503 Notice of Violation #NOV-201 I-PC-0327 Primary Care of Mocksville Davie County Dear Mr. Bell: The Division of Water Quality (Division) is in receipt of the Phase II Corrective Action Completion Notification and the Annual Inspection Report for the above referenced project. The Division now considers the violation issued on rune 22, 2011 resolved to our satisfaction. Please also note that you are required to maintain and operate all stormwater management practices in perpetuity per Stormwater Permit No. SW4080503 issued June 4, 2008 as well as all approved modifications. Routine inspections are required per the signed Operation and Maintenance Plan you submitted with your permit application. In addition, Please note that Condition I1.5. requires that the permittee submit an annual summary report of all maintenance and inspection records. Should you have any questions regarding these matters, please contact Sue Homewood at this office at 336-7714964 or sue.homewoodnnederingov or myself at 336-771-5000. Thank you for your attention to this matter. This Office is no longer considering sending a Recommendation for Enforcement to the Director of the Division of Water Quality regarding these issues. Should you have any questions regarding these matters, please contact Sue Homewood at this office at 336-771-4964 or sue.homewood(a),nedenr,g4u or myself at 336-771-5000. Sincerely, W. Corey Basinger Water Quality Regional Supervisor Winston Salem Regional Office cc: John Lipka, P.E., LPK Consulting PA (via email) Robert Patterson, Stormwater Unit, DWQ (via email) WBSCaPE Unit DWQ WSRO North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 One Phone: 336-771-5000 l FAX 336-771-46301 Customer Service: 1-877.623.6748 North Caro] I ri a Internet: www,ncwaterquality.org 'J�'��N� // An Equal Opportunity 1 Affirmative Action Employer � y L ly 7750 Seasons Hollow Road ma EC011SLiIt11I , Psi Lewisville, NC 27023 North Carolina Department of Environment and Natural Resources (NCDENR) Winston-Salem Regional Office Attn: W. Corey Basinger, Water Quality Regional Supervisor 585 Waughtown Street Winston-Salem, NC 27107 RE: Stormwater Permit No. SW4080503 Annual Summary Report Primary Care of Mocksville Davie County Dear Mr. Basinger, Phone, (336) 945-0302 jlipka@LPK-Consulting.coni KC -Dept. of ENR Nov 0 3 2011 Winston-Salem Re t�°"a� ��Octvber 6, 2011 Please find attached, with our Annual Inspection Checklist and Certification, supporting documentation to complete the required Annual Summary Report of maintenance and inspection for the BMP's at the Primary Care of Mocksville. The Annual Summary Report is due on November 1. The Annual Summary Report supporting documents attached include: • LPK Annual Inspection Checklist and Certification • BMP Phase II Corrective Action Measures 10-14-2011 • BMP Phase I Corrective Action Measures 8-12-2011 • Oct 23 2011 Inspection Checklist • Oct 12 2011 Inspection Checklist • Sept 22 2011 Inspection Checklist • Sept 7 2011 Inspection Checklist • Sept 6 2011 Inspection Checklist • Sept 2011 Rainfall Log Submitted By, / John D. Lipka, PE LPK Consulting, PA 7750 Seasons Hollow Road ma C017SLlItIt1 , PA Lewisville, NC 27023 North Carolina Department of Environment and Natural Resources (NCDENR) Winston-Salem Regional Office Attn: W. Corey Basinger, Water Quality Regional Supervisor 585 Waughtown Street Winston-Salem, NC 27107 RE: Corrective Action Measures (Phase It) Stormwater Permit No. SW4080503 Inspection Report and NOV-2011-PC-0327 Primary Care of Mocksville Davie County Dear Mr. Basinger, Phone: (336) 945-0302 jlipka@LPK-Consu lti ng.com N.C.Dept. -; OCT 17 �t Winston-s" i Reglonal c!;,o) On behalf of Wake Forest University Baptist Medical Center (WFUBMC), LPK Consulting, PA (LPK) is advising your office that Phase II Corrective Action Measures for the Primary Care of Mocksville BMP's are complete. As outlined in our previous correspondence, the Phase II Corrective Action Measures include: ■ Install modular stack block retaining wall ■ Rework soil, provide permanent fescue grass seeding at prescribed areas • Provide prescribed plantings at bioretention cell In addition, although not required, as a measure to provide immediate stabilization, sod turf has been installed at multiple locations upstream of the project BMP's and to support grass and plant longevity an irrigation system has been- installed. The addition of -the site retaining wall, class 1 rip rap at Level Spreader and the modified plantings within the Bio Retention Cell are all elements of the revised plans dated August 29, 2011 submitted to and accepted by the Raleigh NCDENR-DWQ office. Throughout the implementation of Phase I and Phase II corrective action measures, WFUBMC staff have participated in on -site training relative to form, function, operation, inspection and maintenance of the BMP's. We trust that through completion of all the necessary corrective action measures, following adequate maintenance coupled with inspections documentation, the site BMP's will be back in compliance with the approved plans and permit conditions. We look forward to hearing back from your office. Sincerely, John D. Lipka, PE President, LPK Consulting, PA Cc: Sue Homewood, NCDENR-DWQ Tim Bell, WFUBMC Randall Marshall, WFUBMC L. Celeste Caskey, Wake Forest School of Medicine Primary Care of Mocksville Phase 11 Corrective Action Measures 1 October 14, 2011 Inspection Images Stabilized Swale & Bioretention Forebay Stabilized Slopes & Level Spreader/Filter Strip Bioretention Cell, Plantings & Retaining Wall Stabilized Slope & Bioretention Forebay Primary Care of Mocksville Phase 11 Corrective Action Measures id. 1- " . , I * % ?!, ' STORMWATER BMP ANNUAL MAINTENANCE INSPECTION REPORT Post -Construction Maintenance Report Form Inspection Date: October 14, 2011 NCDENR Permit No. Legal Owner of Record: (Name from County Tax Website or from the owner if more recently updated): SW4080503 Wake Forest Baptist Medical Center Project Name: Legal Owner of Record Address:: (from County Tax Website or from the owner if more recently updated): Primary Care of Mocksville, NC Medical Center Blvd, Winston-Salem, NC 27167 Physical Address/Location of BMP's: Owner Telephone Number. 1188 Yadkinville Road (336) 716-1226 Mocksville, NC Davie County Site Contact Entity: Name of Inspection Company: Wake Forest Baptist Medical Center LPK Consulting, PA Department of Environment and Health Site Contact Person Name/Title: BMP Inspector Name: (a person's name - not a company name) L. Celeste Caskey, MS, CSP John D. Lipka Site Contact Entity Mailing Address: Mailing Address of Inspection Company: Medical Center Boulevard 7750 Seasons Hollow Road Winston-Salem, NC 27157 Lewisville, NC 27023 Qualification)/Credentials of Inspector: Site Contact Person Telephone Number: Type Name of Entity State # (336) 716-1226 Registration: NC Professional Engineer Site Contact Person e-mail address: Licensure: 026494 lcaskey@wakehealth.edu BMP Inspector Telephone Number: (336) 945-0302 BMP Inspector e-mail Address: jllpka@LPK-Consulting.com The results of this inspection are as follows: - - FAIL VISUAL INSPECTION FOUND APPARENT PROBLEMS WHICH NEED IMMEDIATE ATTENTION. COMPLETE THE REPAIR AND/OR MAINTENANCE ITEMS INDICATED ON THE ATTACHED CHECKLISTS WITHIN 30-DAYS OF THE DATE OF, THIS REPORT. PASS/CERTIFIED VISUAL INSPECTION FOUND NO APPARENT PROBLEMS atio performed when BMP is functional and has no outstanding repair or maintenance issues) I, 4r.�, ,' as a duly registered Professional in the State of North Carolina, he H elest of my abilities the stormwater best management practice (bmp) devices) is/are fully functio designed and intended. 10 Seal/Signature Inspection by:. Date: z� �a t I.1 %%- 4%% Level Spreader Checklist for Annual BMP Report BMP Site Name Primary Care of Mocksville Date Oct 14 2011 item-bv-.item Code Kev: FF Fully Functional (No Repairs Needed) = Pass for Inspection PF Partially Functional (Repairs Needed) = Fail the Inspection NF Not Functional (Repairs Needed) = Fail the Inspection MON Monitor (Monitor fora period of time — perhaps until the next inspection) NIA I Not Applicable INLET/FLOW SPUTTER DEVICE Assessment Code Status Comments Obstruction: vegetation/debris/sediment NIA Rip Rap Displacement /Sedimentation NIA Structural Condition NIA Other Describe NIA No S litter by Design POOLING AREA AND LEVEL LIP Assessment Code Status Comments Sediment/debris accumulation FF Level lip is cracked , settled, undercut or eroded FF Stormwater is by-passing levels reader FF Woody Vegetation growth in pooling area or on level lip FF Grass is maintained as mowed FF Area adjacent to pool recently seeded and stablized Nuisance Vegetation is Present FF Other (Describe) BYPASS CHANNEL Assessment Code Status Comments Bare oil/erosive gullies NIA Te Reinforcement condition NIA Di7placement of rip -rap N/A Other (Describe) N/A No Bypass by Design FILTER STRIP Assessment Code Status Comments Grass length: too short/too long) FF Recently seeded and stabilized Bare soil/erosive gullies FF Sediment accumulation FF Nuisance vegetation is present FF Other Describe) Level Spreader Checklist -,.�,. - - ;,: .. - ....- - - . __ ,3. , ., .r ;�... -- - - Y• _ - - .. � •�• tip % � , � - , • \ n ,1 - �� - - .. _ ' r� �,.. � � f. � '� . .. i i.' �i. - - - - �- �� y _ � .. 7: � - � i , .. ) � „ fie �' � � - �•; �r. .. ' �, .,,, � 4 I � r � . - � ti � y __ Level Spreader Checklist for Annual BMP Report BMP Site Name Primary Care of Mocksville Date Oct 14 2011 Item-bv-item Code Kev: FF Fully Functional (No Repairs Needed) = Pass for Inspection PF Partially Functional (Repairs Needed) = Fail the Inspection NF Not Functional (Repairs Needed) = Fail the Inspection MON Monitor (Monitor for a period of time — perhaps until the next inspection) NIA I Not Applicable MISCELLANEOUS Assessment Code Status Comments Trash/debris FF Access FF Evidence of routine maintenance being performed? FF Other (Describe) PHOTOGRAPHS Rip Rap at Level Spreader & Filter Strip Pool area & Level Lip ADDITIONAL COMMENTS Level Spreader Checklist Page 2 of 2 Bioretention Area Checklist for Annual BMP Report BMP Site Name Primary Care of Mocksville Date Oct 14, 2011 Item-bv-Item Code Kev: FF Fully Functional (No Repairs Needed) = Pass for Inspection PF Partially Functional (Repairs Needed) = Fail the Inspection NF Not Functional (Repairs Needed) = Fail the Inspection MON Monitor (Monitor for a period of time — perhaps until the next inspection) NIA I Not Applicable INFLOW POINTS Assessment Code Status Comments Obstruction: vegetation/debris/sediment FF Erosion/undercutting FF Structural condition FF Displacement /sedimentation of fabric/rip-rap FF Other (Describe) PERIMETER/SIDE SLOPES/EMBANKMENT Assessment Code Status Comments Sediment/debris accumulation FF Bare soil/erosion FF Woody vegetation FF Turfgrass maintained as mowed FF Areas recently seeded and stabilized Other (Describe) PRE-TREATMENT AREA (Forebay. Qrass swales. & verizes. Qraveh Assessment Code Status Comments Sediment/debris accumulation FF Erosion/gullies present FF Invasive vegetation FF Recent!seeded and stabilized Flow is by-passing pretreatment FF Other (Describe) Bioretention Area Checklist Page 1 of 3 _i . Bioretention Area Checklist for Annual BMP Report BMP Site Name Primary Care of Mocksville Date Oct 14, 2011 Item-bv-Item Code Kev: FF Fully Functional (No'Repairs Needed) = Pass for Inspection PF Partially Functional (Repairs Needed) = Fail the Inspection NF Not Functional (Repairs Needed) = Fail the Inspection MON Monitor (Monitor for a period of time — perhaps until the next inspection) NIA I Not Applicable BIORETENTION CELL Assessment Code Status Comments Overgrown vegetation (requires runin FF Plants are dead, diseased, or dying (Replace such plants as necessary per original approved constructionplans) FF Mulch is decomposed or displaced FF Soils/mulch clogged with sediment FF Evidence of lack of proper drainage (i.e., dead plants, or successional wetland vegetation)__ FF Bare or eroded areas in rass cells NA Other Describe OUTLET DEVICE Assessment Code Status Comments Obstruction: vegetation/debris/sediment FF Erosion/undercuttin FF Structural condition FF Sediment in pipe FF Joint failure/loss of joint material/soil piping FF Displacement of fabric/ri -ra FF Other (Describe) MISCELLANEOUS Assessment Code Status Comments Trash/debris FF Access FF Evidence of routine maintenance being performed? FF Other (Describe) Bioretention Area Checklist Page 2 of 3 -F •' . �� .. t ' �. �� F 'I 4 � � s - .�I r- �. - .. IFI I, -. - . ,� r � + �, � ,F.'. ' _. ,+� ,. ., ' i 1 � , i i � � f � � . .. !� .. i ' I f • 1 e i. r _ ' ` . � � .�i, a e � � f ° 1 _ � „ � ,,, � � � � � r _ ,�. ., . A RF -- .1 AA IA.'v.,a Elp", m 'SIT 'I., P-h ue I,, r i' • - . � c ii ! '; ,, � ' i., r ;? 'r,r r, � j . � i • � s. v ,. � 1 - :} .. � i1 • • � J f � . . '' 1` e 'F • .. f I 4 1. . - % 7750 Seasons Hollow Road Em C011Su1 . . Pf>< Lewisville, NC 27023 North Carolina Department of Environment and Natural Resources (NCDENR) Winston-Salem Regional Office Attn: W. Corey Basinger, Water Quality Regional Supervisor 585 Waughtown Street Winston-Salem, NC 27107 RE: Corrective Action Measures (Phase II) Stormwater Permit No. SW4080503 Inspection Report and NOV-2011-PC-0327 Primary Care of Mocksville Davie County Dear Mr. Basinger, Phone. (336) 945-0302 jlipka@LPK-Consulting.com October 14, 2011 On behalf of Wake Forest University Baptist Medical Center (WFUBMC), LPK Consulting, PA (LPK) is advising your office that Phase II Corrective Action Measures for the Primary Care of Mocksville BMP's are complete. As outlined in our previous correspondence, the Phase II Corrective Action Measures include: ■ Install modular stack block retaining wall ■ Rework soil, provide permanent fescue grass seeding at prescribed areas ■ Provide prescribed plantings at bioretention cell In addition, although not required, as a measure to provide immediate stabilization, sod turf has been installed at multiple locations upstream of the project BMP's and to support grass and plant longevity an irrigation system has been installed. The addition of the site retaining wall, class 1 rip rap at Level Spreader and the modified plantings within the Bio Retention Cell are all elements of the revised plans dated August 29, 2011 submitted to and accepted by the Raleigh NCDENR-DWQ office. Throughout the implementation of Phase I and Phase II corrective action measures, WFUBMC staff have participated in on -site training relative to form, function, operation, inspection and maintenance of the BMP's. We trust that through completion of all the necessary corrective action measures, following adequate maintenance coupled with inspections documentation, the site BMP's will be back in compliance with the approved plans and permit conditions. We look forward to hearing back from your office. Sincerely, John D. Lipka, PE President, LPK Consulting, PA Cc: Sue Homewood, NCDENR-DWQ Tim Bell, WFUBMC Randall Marshall, WFUBMC L. Celeste Caskey, Wake Forest School of Medicine Primary Care of Mocksville Phase It Corrective Action Measures 1 t 'v _ '�. f...=-- f 'i� ' 1 ;!'..S ��, �i j i� y •, , ice._.." �...e m,�p�.`�-,M . '. .Y: ',.•�.+r.r.�r'^''�.r"' ��,-'at+c {'{..F'y'Fr ' 1' 'C�•,!{ - . J i z � Y�' r ,��, ��' x� +�la•�.,�, I� .r • J j fJk L ?. 'C. % J V RL • 4.. �f.. r i. tz . C ,4% .{�,� ._•.?� t• Y K. .d .. M1 „M'. �R. 'YtS, �.,l�iY, ik. !„e.:4 .3>�I�� 3n � Y,,,�y "'�-..�'z x,r.,• e.....q^', tam '! mow: '.�Yw�.+ "is�, . '. � q 1 In" �+fC- 3j t s �r-j, i.�., •t.. '� I}' r C uv �� ' ,I M1�%' y. tisf=fy',•'.-,-.,rs.i ��r,y�a'�I��xry�� , �f;L1�7`• ` �. `'"r`�;Ki' E � �� " ��•-.^'�. �+,7'^1,�''rp�:�l�t�, ,?y�"�`.4r�,1'��4y Yf -F'b' � `i•.xl H° �` 0 ,~ L K :? 1. /'�� -�,( � { ��,y'�1e'`�}�ij��'`��yJi�}{fit �r �.j, �aL . y � 1. Ind G1� ✓�.ir�.s+ � ` t > ., t `,r _,.'""'. J.T.I- "'t�'',.I.h.'ri!.i�al-T!Sli,�$QrP`i�1��1�7:1:YT�. 3.I�[:-��'I�i;S 12r Wake Forest' Baptist Health MONTHLY STORMWATER BMP CHECKLIST The Stormwater BMP Checklist must be performed monthly and when it has rained more than I inch within 24 hours. BMP Site Name --;,—Date, ?AW�\\ Inspector's Name BIORETENTION AREA B Obstruction: vegetation/debris/sediment Erosion/undercutting Structural condition Dis2lacement /sedimentation of fabric/ri Sediment/debris accumulation Bare soil/erosion Woody vegetation Tff&2ss maintained as mowed 0M. Sediment/debris accumulation -.7 Erosion/gullies present Invasive vegetation Flow is by:passing pretreatment Overgrown vegetation (requires pruning) Plants are dead, diseased, or dying (Replace such plants as necessary per on final qMroved construction Elans) Mulch is dccomposed or displaced FF Soils/mulch cloEged with sediment Evidence of lack of proper drainage (i.e., dead plants, or successional wetland vegetation) Bare or eroded areas in cells R, Obstruction, vegetation/debris/sediment Erosion/undercutting Structural condition Sediment in pipe Joint failure/loss ofj oint material/soil pipLnA Displacement of fabric/rip-rap W iH W-1-MM U." IN 0,0 7;' Rp Obstruction: vegetation/debris/sediment Rip Rap Dis&cernent /Sedimentation Structural Condition g ON -20 Sediment/debris accumulation Level lip is cracked , settled, undercut or eroded Stormwater is by-passing level spreader_ Woody Vegetation growth in pooling area or on level tip_ Grass is maintained as mowed Nuisance Vegetation is Present Man Grass length: (too short/too long) Bare soil/erosive p1lies Sediment accumulation Nuisance vegetation is present 2-05AM- a Trash/debris Access Evidence of routine maintenance being performed? PHOTOGRAPHS Attach low -resolution, digital color photographs of the site and BMP features (2-3 per page- no more, no less on any one page). Include captions describing the photographs. ADDITIONAL COMMENTS t7- 4 NP-0 NK PF 3 R R! TV i .1 � • � � 11• ' � 5 XXX-. Wake Forest - Baptist Health MONTHLY STORMWATER BMP CHECKLIST The Stormwater BMP Checklist must be performed monthly and when it has rained more than 1 inch within 24 hours. BMP Site Name Date Inspector's Namee��`—�-y BIORETENTION AREA =L > 4 r `1 t1-'212 - Pub Obstruction: vegetation/debris/sediment Erosion/undercattin Structural condition ``rF Displacement /sedimentation of fabric/ri -rap F-rr- Sediment/debris accumulation T-�- Bare soil/erosion - Wood vegetation 7-4- Turf s maintained as mowed re= -Tr- _ Sediment/debris accumulation Erosion/gullies present r-'S0 Invasive vegetation Flow is by-2assiRg 2retreatment �.._ . . Over own vc etation (rc uires Tuning �~ Plants are dead, diseased, or dying (Replace such plants as necessary per original approved constructionplans)�t Mulch is decomposed or displaced Fir Soils/mulch clogged with sediment 5PF Evidence of lack of proper drainage (i.e., dead plants, or successional wetland vegetation �r Bare or eroded areas in vass cells — T-14Z14-4— Obstruction: vegetation/debris/sediment Erosion/undercutting _ Structural condition F� Sediment in pipe Joint failure/loss of joint materiaUsoil piping Displacement of fabric/rip-raptr— �� a �'ariigtiy FnnctiQnal (2ep 1r$ f} !� Faii'tbC a Stipp _ x tiNl�- . �'No4�+lnetsatnal,(itrpairsl�d�j�.$a�EtttR�BpeC.holr �- __ram_` .��wF,'��'' "� ��x� :_.r•}.:: �_.r: Nlf 4f7 0 NOR &_17_` Obstruction: vegetation/debris/sediment Rip Rap Displacement /Sedimentation Structural Condition Sediment/debris accumulation Levcl jjLis cracked, settled, undercut or eroded Stormwater is by-passing level s2reader Woody Vegetation growth in pooling area or on level lip, Grass is maintained as mowed Nuisance Ve�tton is Present 4MMW Grass length: (too short/too lonE) Bare soil/erosive gullies Sediment accumulation rArl) �e_ Nuisance veetation is 2resent RJENUMN-A WON 0_0 IM � V Trash/debris Access Evidence of routine maintenance being performed? PHOTOGRAPHS Attach low -resolution, digital color photographs of the site and BMA features (2-3 per page- no more, no less on any one page). Include captions describing the photographs, ADDITIONAL COMMENTS N dt I-wq op e P NP.01f L XXXXI Wake Forest" Baptist Health MONTHLY STORMWATER BMP CHECKLIST The Stormwater BMP Checklist must be performed monthly and when it has rained more than 1 inch within 24 hours. BMP Site Name Date \ t Inspector's Name BIORETENTION AREA -� — - -a' r d - Obstruction: vegetation/debris/sediment 0-t-c_ Erosion/undercutting Structural condition Displacement /sedimentation of fabri! /r -ra 7-1;:- o.a� Sediment/debris accumulation Bare soil/erosion-G Wood ve elation - Turf s maintained as mowed WAM - Sediment/debris accumulation Erosion/ llies resent F-'�- Invasive ve elation Flow is Ly,passina 2retreatment Yi Over own vegetation (requires runin) Plants are dead, diseased, or dying (Replace such plants as necessary per on final approved constructionplans)_F Mulch is decomposed or displaced F'G Soils/mulch clo ed with sediment 5- Evidence of lack of proper drainage (i.e., dead plants, or successional wetland vegetation)�-��- Bare or eroded areas in gass cells _ Obstruction: vegetation/debris/sediment- Erosion/undercuttingc�cxa Structural condition Sediment in pipe Joint failurc/loss of'oint material/soil piping Displacement of fabric/ri -ra F- FR: F�►�Iy3�uact on 11Va xt paira.i�eed ` � o Ine ctiar� r ti .rr` ' ; �a�pal�4FggellDbal {Repairs 1V�e,�d =-F'S1� �iM� ipB[►ectiblL -r, � �4 "� � _, r _ � _ J . .� «ti - � ' r ; � '1 _� ._ ... � � � _ _ , �. _ u t• .r rF �,.. mar i' .eL ' " ' .� � t � � � +� ,r 3 � � � � , � , j � � � , � � � I .. .. .. - _.. .. � I � • � - J. .. ! I � I. �" ' I r - � ' i r �f - .. � i - I � , _ ir., ti — - '+ . _. ._. - ... 1� , r_ - _ .. -.. -. _ � - . - .'. , i' I • .'r ..a .. `' � f Vd Obstruction: vegetation/debris/sediment Rip Rap Displacement /Sedimentation Structural Condition low Sediment/debris accumulation tJ�ora4, Level lip is cracked, settled, undercut or eroded t Stormwater is by-passing levels reader 5�'r Woody Vegetation growth in pooling area or on level lipt` r` Grass is maintained as mowed Nuisance Ve etation is Present Grass length: too short/too long)��- Bare soil/erosive gullies \o�� Sediment accumulation Nuisance ve etation is 2resent TrashMebris Access Evidence of routine maintenance being performed? PHOTOGRAPHS Attach low -resolution, digital color photographs of the site and BMP features (2-3 per page- no more, no less on any one page). Include captions describing the photographs. ADDITIONAL COMMENTS FF y' x wily F.ugctlGpal: (Np RepausNee�ed�'� Pae� �4r lnspectian � "' �-- � 4 .-� P Gtlk EU C"511►ianai��t��9ira li�edea)� ?a1l;fee7nspeeti4n F r i u z rFF Y* f ucfvaltepr�se�e�j)n{I Ids In9peetioq S y '� J -1r7nMpPt�b{L` XXX)v Wake Forest - Baptist Health MONTHLY STORMWATER BMP CHECKLIST The Stormwater BMP Checklist must he performed monthly and when it has rained more than I inch within 24 hours. BMP Site Name Date <D, V-I V \, Inspector's Name RIORF,TENTION AREA MM W 9 �JU�MOM Obstruction: veEetationidebris/sediment Erosion/undercutting I -- Structural condition Displacement /sedimentation of fabric rie-rap r OWN MIMI W ON U M Sediment/debris accumulation Bare soil/erosion �-ck- e�- Woody vegetation maintained as mowed '710 Mass M -t . I Sediment/debris accumulation Erosion/gullies present Invasive vegetation Flow is by -gassing 2retreatment WK Overgrown vegetation (requires_ pruning) Plants are dead, diseased, or dying (Replace such plants as necessary per orlginal ypproved construction Elaps Mulch is decomposed or diTlaced Soils/mulch clogged with sediment Evidence of lack of proper drainage (i.e., dead plants, or successional wetland vegetation) TV — Bare or eroded areas to rass cells :jm-q s M Obstruction, vegetation/debris/sediment Erosion/undereutfing_ Structural condition Sediment in pi2e Joint failure/loss of joint material/soil piping Displacement of fabric/rip-rg) a ion- -4�*EJ 17'x-i� - •!1'i11�,i C'�it9P�C 011 'yrsis - ,r.- - NP ` � ,,' 4 f'. Yr .. � � � � � r" _ .. .. .! , �F � � .� � .q. - ' .i .. r r � .. � , � - � � ' � .. a _ i r .. ' r .. L .. � - 1 ' � � �; r S:. • � � � '• go- h- IM UBE Obstruction: vegetation/debris/sediment Rip Rap DiTlacernent /Sedimentation Structural Condition V Sediment/debris accumulation Level lip is cracked , settled, undercut or eroded Stormwater is by-pmsin2 level spreader Woody Vegetation growth in pooling area or on level lip Grass is maintained as mowed Nuisance Veactation is Present Grass length: (too short/too long)_ Bare soil/erosive gullies Sediment accumulation Nuisance vegetation is present Mift_12010 n M M I -as F ff N 1.1i�_�_:`MM&_`F - Trash/debris a cr Access Evidence of routine maintenance being_Ndonned? T_ Tr_ t_KIC3 PHOTOGRAPHS Attach low -resolution, digital color photographs of the site and BM-P features (2-3 per page- no more, no less on any one page). Include captions describing the photographs. ADDITIONAL COMMENTS i%,'s v4s;-C T-'3 "1'. -.1�fi- M AF01 w0narkil-T 1W Part�allunctiugaL XJ Z Wake Forest' Baptist Health MONTHLY STORMWATER BMP CHECKLIST The Stormwater BMP Checklist must be performed monthly and when it has rained more than 1 inch within 24 hours. BMP Site Name +ck- Date C \b\,,%.` Inspector's Namee��'�L� DIORETENTION AREA -yam �. Obstruction: vc etation/debris/sediment Erosion/undercvttin- t•1.oc�:.o..� Structural condition Displacement /sedimentation of fabriclri -rap Sediment/debris accumulation Bare soil/erosion . Woody vegetation F-F Turf ass maintained as mowed Sediment/debris accumulation Erosion/ ullies present oT-41ti Invasive vegetation �-rr Flow is b - assing Rretreatment Overgrown vegetation (requires ruin) Plants are dead, diseased, or dying (Replace Such plants as necessary per original approved construction lams) r.,v,, Mulch is decomposed or displaced rr� Soils/mulch clogged with sediment F T- Evidence of lack of proper drainage (i.e., dead plants, or successional wetland vegetation) Bare or eroded areas in ass cells Obstruction: ve etation/debris/sediment '�F Soti..tirT Erosion/undercuttin C r Structural condition �- Sediment in e Joint failure/loss of joint material/soil 1iping Dis lacement of fabric/rip-rap�G :.. ;_.'.'•vim-'." r...' =x� - _ i r_ _ c`•= .___ —'xs '•ua_ T �'?r '''.•'' � :r�-ivy.., Obstruction: vegetation/debris/sediment Rip Rap Displacement /Sedimentation Structural Condition IM 0• Sediment/debris accumulation Level lip is cracked , settled, undercut or eroded F� Stormwater is by-passing levels reader �r Woody Vegetation growth in pooling area or on level lip Grass is maintained as mowed Nuisance Ve etation is Present —1cc.. y Grass length: too short/too long) Bare soil/erosive gullies Sediment accumulation F4- •�- 6a. Nuisance ve elation is � iresent . .• :-�,, -�y��' :� -SLR=� 1-�_ �� Trash/debris __. •a..R.�_� � ti _ � ''- � �'��' �_ . 0 -ati Access Evidence of routine maintenance being erfonned7 PHOTOGRAPHS Attach low -resolution, digital color photographs of the site and BMP features (2-3 per page- no more, no less on any one page). Include captions describing the photographs. ADDITIONAL COMMENTS Cam. �,,., c�.Cw.��..� �.�`�... �-wl..►--�� -v��L7C�oN� �-C `: �� .Ss�Se:��4'� Ce— 5v S-Ctix-cam.. •�C1��.s.S , 54�� Sr�.Cv.),,.. -�... o� vvS A�.�p C�,,►,5��ccr`tSa�e- c �i�. ;� i'artially Ni�n�l�ogni {Re�x1r# Ne�ccf)�Fa�,fhe Ihspecuon � � t a DAILY RAINFALL TOTALS ar- `\ MONTH: �*-41 LOCATION: DAY AMOUNT OF RAINFALL COMMENTS 2 3 �O\. 4 T�►3e� �. a�8-t'� 5 \� �.•, 7 8 9 10 56 11 12 5e 13 14 0 15 Qj 16 (� 17 18 19 20 Va" 21 22 •• 23 q� 24 25 26 o 27 28 29 30 s �-a MCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Mr. Tim Bell Wake Forest Baptist Medical Center Medical Center Blvd. Winston-Salem, NC 27157 Division of Water Quality Coleen H. Sullins Director September 2, 2011 Subject: Approved Plan Revision Stormwater Permit No, SW4080503 Primary Care of Mocksville Davie County Dear Mr. Bell: Dee Freeman Secretary The Stormwater Permitting Unit received a request for a plan revision for Stormwater Management Permit Number SW4080503 on August 31, 2011. The plan revision includes revisions to the bioretention cell and level spreader; and does not change the amount of BUA being treated by the BMP. 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 plan for your files. Please be aware that all terms and conditions of the permit issued on June 4, 2008 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 submitted to and approved through the Division of Water Quality prior to construction. The issuance of this plan revision does not preclude the permittee from complying with all other applicable statutes, rules, 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, or need additional information concerning this matter, please contact Robert Patterson at (919) 807-5375; or robert.patterson@ncdenr.gov. Sincerely, 7�yD /'" ForColeen H. Sullins cc: SW4080503 File ec: John D. Lipka, PE — LPK Consulting, PA Sue Homewood — Winston-Salem Regional Office Wetlands and Stormwat-.r Branch 161: Mail Service Center, Raleigh, North Carolina 27699-1517 Locafiow 512 N. Salisbury St. Raleigh, North Carolina 2764 Phone: 919-P07-63001 FAX: 919-807-64,-,4 4 Customer Service 1-877 623-6748 Inir--net: wmu.ncwaterquality.or. NorthCarotina NQtur dy An Equal Oppor:unity 1AffiirmativeAction Empluler 51t/ � 7;1 7750 Seasons Hollow Road Phone, (704) 936-7406 zB=C0-q=SU=1=V=nA1 phi Lewisville, NC 27023 jlipka@LPK-Consulting.com TL'W 9EV151 atl Letter of Transmittal To: Mr. Robert D. Patterson, PE Date: August 30, 2011 Environmental Engineer NCDENR-DW^Q. Job No: 110108 Stormwater Permitting 1617 Mail Service Center Reference: Primary Care of Mocksville Raleigh, NC 27699-1617 J� MM Post C nstructi n BMP Modifications 0v AUG 3 1 201, UENR- WATER QUAD y INEWUSANDSTORMWATE� WWM COPIES DATE NO. DESCRIPTION 2 08-29-2011 C-4.OA Post Construction Plan 2 08-29-2011 C-5.OA Post Construction Planting Plan 2 08-29-2011 C-8.OA Post Construction Details Remarks: As requested, please find attached two copies of supplemental and modification revisions to the original approved plans. It is our understanding that your previous email acceptance of proposed modifications is adequate so that we may proceed with Phase 11 Corrective Action Measures. Copy To: Randall Marshall. WFBH w/3sets Signed: h' ` Tim Bell. WFBH �---� Jo . Lipka L. Celeste Caskey. WFBH Sue Homewood, NCDENR-DWO � �� c� c. c.�-cry 3 �✓o�, e . yx` �" 7750 Sens Hollow.Road Phone, (704) 936T7406 'CO Sul RA Lewisville, NC 27023 jlipka@1PK-Consuiting.cam Letter of Transmittal To; Mr. Robert D. Patterson, PE Date: August 30, 2011 Environmental Engineer NCDENR-DWO. Job No: 110108_ Stormwater Permitting 1617 Mail 5elyice Centgr Reference: Primary Care of Mocksville Raleigh, 276 - 6 7 Post Constuction BMP Modifications COPIES DATE ,NO. DESCRIPTION 2 08-29-2011 C-4.OA Post Construction Plan 2 08-29-2011 C-5.0A Post Construction Planting Plan 2 08-29-2011 C-8.OA Post Construction Details Remarks: As requested, please find attached two copies of supplemental and modification revisions to the original approved plans. It is our understanding thatyour previous email acceptance of proposed modifications is adequate so that we may proceed with Phase 11 Corrective. Action Measures. Copy To Randall Marshall. WFBH w/3sets Tim Bell, WFBH L. Celeste Caskey, WFBH Sue liornewood. NCDENR-DWQ Signed: 141, 9 Jo Lipka i 7750 Seasons Hollow Road CD11Slr1h11 , PA- Lewisville. NC 27023 North Carolina Department of Environment and Natural Resources (NCDENR) Winston-Salem Regional Office Attn: W. Corey Basinger, Water Quality Regional Supervisor 585 Waughtown St Winston-Salem, NC 27107 RE: Corrective Actions Measures Stormwater Permit No. SW4080503 Inspection Report and NOV-2011-PC-0327 Primary Care of Mocksville Davie County Dear Mr. Basinger, Phone! (336) 945-0302 j Lipka@LPK-Consu Iting.com August 12, 2011 RECEIVEC N.C. bent. of ENR AUG 15 2011 Winston-salerr Regional Office On behalf of Wake Forest University Baptist Medical Center (WFUBMC), LPK Consulting, PA (LPK) is advising your office that Phase I Corrective Action Measures for the Primary Care of Mocksville BMP's are complete. As outlined in our previous correspondence, the Phase I Corrective Action Measures include: ■ Grout holes at level spreader ■ Rework /supplement No. 57 stone at filter strip ■ Remove sediment from bioretention cell surface ■ Remove debris/sediment from forebays In addition, so that the sand media would not be exposed to contamination leading up to Phase 11 work, the required mulch bed over the top of media was replaced under Phase I work. Stone stabilization was provided at bioretention forebays and at level spreader. As requested by Robert Patterson in your Raleigh Office, we are preparing revised plans for review and approval. These plan revisions are anticipated for implementation of Phase 11 work, which is to be completed by October 15, 2011. To conclude; while reviewing/inspecting the completed Phase I Corrective Action Measures, the opportunity was taken to provide tangible on site operations, maintenance and documentation training to the responsible facility staff. Attached are images from our inspection. We trust that todays on site workshop coupled with Phase II Corrective Action Measures will bring the permit status back into compliance. Sincerely, John D. Lipka, PE President, LPK Consulting, PA Cc: Sue Homewood, NCDENR-DWQ Tim Bell, WFUBMC Randall Marshall, WFUBMC L. Celeste Caskey, Wake Forest School of Medicine Primary Care of Mocksville Phase I Corrective Action Measures 1 r i_, ► W'% August 12, 2011 Inspection Images Bioretention Forebay No.1 Bioretention Forebay No. 2 Level Spreader & Filter Strip Bioretention Cell Primary Care of Mocksville Phase I Corrective Action Measures F'V '1 7750 Seasons Hollow (toad nrffmL'OIlSl1I , Pfi Lewisville, NC 27023 North Carolina Department of Environment and Natural Resources (NCDENR) Winston-Salem Regional Office Attn: W. Corey Basinger, Water Quality Regional Supervisor 585 Waughtown St Winston-Salem, NC 27107 RE: Corrective Actions Measures Stormwater Permit No. SW4080503 Inspection Report and NOV-2011-PC-0327 Primary Care of Mocksville Davie County Dear Mr. Basinger, Phone, (336) 945-0302 j lip ka@1.Ph-Consu It i ng.co m August 12, 2011 On behalf of Wake Forest University Baptist Medical Center (WFUBMC), LPK Consulting, PA (LPK) is advising your office that Phase I Corrective Action Measures for the Primary Care of Mocksville BMP's are complete. As outlined in our previous correspondence, the Phase I Corrective Action Measures include: ■ Grout holes at level spreader ■ Rework /supplement No. 57 stone at filter strip ■ Remove sediment from bioretention cell surface ■ Remove debris/sediment from forebays In addition, so that the sand media would not be exposed to contamination leading up to Phase it work, the required mulch bed over the top of media was replaced under Phase I work. Stone stabilization was provided at bioretention forebays and at level spreader. As requested by Robert Patterson in your Raleigh Office, we are preparing revised plans for review and approval. These plan revisions are anticipated for implementation of Phase II work, which is to be completed by October 15, 2011, To conclude; while reviewing/inspecting the completed Phase I Corrective Action Measures, the opportunity was taken to provide tangible on site operations, maintenance and documentation training to the responsible facility staff. Attached are images from our inspection. We trust that todays on site workshop coupled with Phase II Corrective Action Measures will bring the permit status back into compliance. Sincerely, John D. Lipka, PE President, LPK Consulting, PA Cc: Sue Homewood, NCDENR-DWQ Tim Bell, WFUBMC Randall Marshall, WFUBMC L. Celeste Caskey, Wake Forest School of Medicine Primary Care of Mocksville Phase 1 Corrective Action Measures A Homewood, Sue From: Patterson, Robert Sent: Thursday, July 28, 2011 2:38 PM To: Homewood, Sue Subject: FW: Mocksville BMP Corrective Action Plan Sue, I told John that the plan revision will need to be sent to the CO for review, and we would take care of it. I may need to get the file from you once this comes in, but I'll send it back with the approved revised plans. Let me know if any other questions come up on this one. Thanks Robert. D. Patterson, PE Environmcnt�il Engineer NCDENR I DWQ I Stormwater Permitting 1617 Mail Service Center, Raleigh, NC 27699-1617 Mail 1 512 N, Snlisbuay St, Raleigh, NC 27604 1 911, Flom- Loc<alion P�trces (919) 807-6375 Phone 1 (919) 807.6494 Fax I Robert.Patterso atncdenr.gov Email I http://porial.ncdetu-.oi-g/web/w4/ws/su Website A liellme printing this entail, please consider your budget :and the environment. E-mail correspondence to and from this address may be subject to the North Carolina Public Records taw and may be disclosed to third parties unless the content is exempt by statute or other regulation. From: John Lipka [mailto:jlipka@LPK-Consulting.comj Sent: Thursday, July 28, 2011 2:28 PM To: Homewood, Sue; Patterson, Robert Cc: Tim Bell/Property Management'; 'Randall Marshall'; Icaskey@wakehealth.edu; dabrown@wfubmc.edu Subject: Mocksville BMP Corrective Action Plan Sue, spoke with Robert Patterson (NCDENR-DWQ Raleigh) yesterday regarding our BMP Corrective Action Plan for Mocksville site. Here is outline of issues discussed: 1. Adding a larger rip rap size stone stabilization on the downstream side of level spreader is acceptable. The rip rap is to replace the No 57 which is scouring into filter strip. 2. The stone check dams at the forebay areas upstream of the bio retention cell appear to be for temporary sediment purposes only and were not removed after site was stabilized. Once re -stabilized the check dams may be removed as long as grades allow for continued function of forebays. 3. Plant material going back into the bio retention cell may be modified from those on the approved plan dated May 22, 2008. However, plants must be on approved list and any modifications to plan design must be submitted to NCDENR on updated plan for approval prior to modifications occurring. As you know, Phase I corrective action measures are to be complete by August 15, 2011. While reviewing Phase I and Phase 11 measures on site this week the team felt that the action of scraping the silt on the surface of the bio retention cell would simply cut out most if not all of the 2 to 4" of existing mulch that is at surface above the sand media. As this silt removal work is to occur under Phase I efforts, we feel it prudent that we replace the mulch under Phase I not leaving the sand media exposed to contamination of possible siltation that may occur leading up to Phase II work. Please feel free to contact me should you have any comments, questions or concerns. 1 (E) W',ith in tw o ni onHis after the Corti m ission's o c a I 'g o�v c r n in e n t s s h a l l i m p l e m e n t p r o g r a m 3 ---------------------------------- p r-- p -- g o v e r n m e n t s h a l l i s s u e a n a p p r o v a l f o r 5 d env e l o p m e n t a p p l is a n o n p r o p o s e s to avoid i m I t e m (3) of this R u l e, or w here the application d e m o n s tra to s that the app lic a n t has done the f D e t e r m i n e d that the a c I i v i I y is exem R e c e i v c d a n A u t h o r i z a d o n C e r t il-ic Item (3 ) o f Ili is R u le for. uses d esi I I / w ith M itigatit) n; 1 2 (i i i) F o r u s e s d e s i g n a t e d as A l l o w able w l 3 a m itigatinn plan pursuant to l5A N 1 4 ( i v) R e c e i v e d it variance p u r s u an t to I t e m l 5 ( F) U p o n i m p l e m e n t a t i o n, l o c a l g o v e r n or e n t s s 1 G D iv is ion sum m a r i z i n g their activities in inn p 1 7 R u le ; 1 8 (G ) I f a I o c a 1 9 0 v e r n m e n t f a i is t o a d o p t o r a d e NC®ENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary CERTIFIED MAIL 7010 2780 0001 4221 6115 RETURN RECEIPT REQUESTED Mr. Tim Bell Wake Forest University Baptist Medical Center Medical Center Blvd., Winston-Salem, NC 27157 Subject: Stormwater Permit No. SW4080503 Notice of Violation #NOV-2011-PC-0327 Primary Care of Mocksville Davie County Dear Mr. Bell: July 19, 2011 The Division of Water Quality (Division) is in receipt of a Violation Response and plan of action dated June 22, 2011 and submitted by LPK Consulting PA on your behalf. The Division has reviewed your letter and requires the following action to be taken. You have indicated that regular inspections of the bioretention cell have occurred, however the personnel conducting the inspections were not properly trained. You have proposed that you will contract annual inspections with a qualified engineer and that starting in November 2011 proper inspection and reporting will be done by onsite personnel who have been properly trained. The Division requests that you review Condition I1. 3 of Permit No. SW4080701 and ensure that future records clearly document all activities required by the permit. You have proposed a two-phase corrective action and Division approves your proposal. Phase I items as noted in the June 22, 2011 letter shall be completed by August 15, 2011 and Phase II items shall be completed by October 15, 2011. You must notify Sue Homewood, Division staff by phone, email, or letter of the completion of each Phase of the corrective action plan. North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 Phone: 336-771.50001 FAX: 336.771.46301 Customer ServiceT 1-877-623-6748 Internet: www ncwaterquality.org An Equal Opportunity l Affirmative Action Employer NorthCarolina Naturallrf Mr. Bell July 19, 2011 Page 2 of 2 Thank you for your attention to this matter. This Office is still considering sending a Recommendation for Enforcement to the Director of the Division of Water Quality regarding these issues and any future/continued violations that may be encountered. Your above -mentioned response to this correspondence will be considered in this process. This office requires that the violations, as detailed above, be abated immediately. These violations and any future violations are subject to civil penalty assessment of up to $25,000.00 per day for each violation. Should you have any questions regarding these matters, please contact Sue Homewood at this office at 336-771-4964 or sue.homewood �ncdennizov or myself at 336-771-5000. Sincerely, W. Corey Basinger Water Quality Regional Supervisor Winston Salem Regional Office cc: John Lipka, P.E., LPK Consulting PA (via email) Robert Patterson, Stormwater Unit, DWQ (via email) WBSCaPE Unit DWQ WSRO STATE OF NORTH CAROLINA Department of Environment and Natural Resources Winston-Salem Regional Office FILE ACCESS RECORD SECTION � DATE/TIME 8 " 3 -Qol l lo:3Q NAME F-i-a_I e.y W ± l dl REPRESENTING )E6 1 Guidelines for Access: The staff of the -Winston-Salem Regional Office is dedicated to making public records in our custody readily available to the public for review and copying. We also have the responsibility to the public to safeguard these records and to carry out our day-to-day program obligations. Please read carefully the following before 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 for file review so you can be accommodated. Appointments are scheduled between 9:00 a.m. and 3:00 p.m. Viewing time ends at 4:45 p,m. Anyone arriving without an appointment may view the files to the extent that time and staff supervision are available. 2. You must specify files you want to review. 3. There is no charge for 25 copies or less. If making more than 25 copies - there is a charge of 2.5 cents per page. (A page refers to a "single impression". A double sided copy is to be counted as 2 pages.) Costs for electronic copies will vary depending on the media type (diskette, tape, cd-rom), please see Receptionist for information regarding electronic copy charges. Payment is to be made by check, money order, or cash (see Receptionist). 4. FILES MUST BE KEPT IN THE ORDER YOU RECEIVED THEM. Files may not be taken from the office. No briefcases, large totes, etc. are permitted in the file review area. To remove, alter, deface, mutilate, or destroy material in one of these files is a misdemeanor for which you can be fined up to $500.00. 5. In accordance with General Statute 25-3-512, a $25.00 processing fee will be charged and collected for checks on which payment has been refused. 6. The customer must present a photo ID, sign -in, and receive a visitor sticker prior to reviewing files. FACILITY NAME COUNTY 2. 3. 4. 5. l $b/i I� igna an ame of Firm/Business Date Time in Time Out Please attach a business card to this form if available 7750 Seasons Hollow Road C011si!IItI1T , PA Lewisville, NC 27023 North Carolina Department of Environment and Natural Resources (NCDENR) Winston-Salem Regional Office Attn: W. Corey Basinger, Water Quality Regional Supervisor 585 Waughtown St Winston-Salem, NC 27107 RE: Response Letter Stormwater Permit No. SW4080503 Inspection Report and NOV-2011-PC-0327 Primary Care of Mocksville Davie County Dear Mr. Basinger, Phone. (336) 945-0302 jlipka@LPK-Consulting.com June 22, 2011 RECEIVED N.C. Deaf. of ENR .SUN 2 A 2011 i Winston-Saiem Regional Office On behalf of Wake Forest Baptist Medical Center (WFUBMC), LPK Consulting, PA (LPK) is providing feedback relative to the necessary documentation and corrective action measures for the Water Quality Best Management Practices (BMP's) at the Primary Care of Mocksville in Davie County. Find below NCDENR comments from Inspection performed on June 19, 2011 and our response to NCDENR comments. 1. "Condition 11.5 of Permit No. SW4080503 requires that the "permittee shall submit to the Division an annual summary report of the maintenance and inspection records for each BMP". An engineer's report was due to the Division on November 1, 2010". Response: WFUBMC acknowledges that the annual inspection and report by a qualified engineer were not provided to NCDENR as required to meet the November 1, 2010 date. Due to a shift in responsibility from one department to another, the annual inspection/report was missed. However, monthly inspections were being performed by Mocksville facility personnel. Upon review of the documented information within the monthly reports it is evident that the personnel conducting the monthly inspections/reports were not adequately trained. Going forward, WFUBMC will contract with a qualified engineer to perform the annual inspection and the engineer will prepare the required report/certification so that WFUBMC will meet the November 1, 2011 annual report date. The necessary monthly/post rainfall event inspections and subsequent maintenance will begin thereafter per NCDNNR guidelines. To facilitate proper inspection and reporting standards, the personnel performing future monthly maintenance and inspections will be included in the required corrective action repairs to the BMP's and personnel will receive training from the qualified engineer. 2. "Condition 11.6 of Permit No. SW4080503 requires that "the facilities shall be constructed as shown on the approved plans. The site inspection determined the following discrepancies: • The vegetated filter strip does not appear to be the approved length. • Small outlet holes are present within the level spreader allowing for concentrated runoff and causing erosion into the filter strip. These holes were not approved on the plans. Response: Holes in concrete level spreader will be grouted in the course of work to occur within 30 days of NCDENR approval of our proposed corrective action schedule. The design length of the vegetated filter strip is 26' per the approved plans dated May 22, 2008. The aggregate placed on the downstream side of the level spreader has traveled well into the filter strip area. Efforts to restore the aggregate to the design Primary Care of Mocksville BMP Inspection/ Report and NOV 1 location will be performed during the initial course of work thus adding back length to the vegetated fitter strip. However, current site inspections suggest the filter strip design length of 26' was not attained during initial construction installation and the subsequent engineer's construction/design/function certification did not address this now apparent discrepancy. Geophysical constraint will not allow for additional filter strip length. Our proposed action to address this issue is to establish and maintain a thick bed of grass within the available filter strip area and maintain the design location of the aggregate downstream of the level spreader. 3. Condition 11.3 of Permit No. SW4080503 requires that "the permittee shall at all time provide the operation and maintenance necessary to assure the permitted storm water system functions at optimum efficiency" The following maintenance problems were noted during the inspection: • Side slopes of the bioretention cell have not been stabilized with adequate vegetation • Forebays are clogged with debris and excessive sediment. One forebay is clogged to the degree that stormwater is bypassing the forebay and sediment is getting into the bioretention cell and the soil media • The vegetation present in the bioretention cell does not match the approved planting plan. • The required mulch depth is not present within the entire bioretention cell. • Erosion is occurring within the filter stip. Response: Permanent sediment control will only be accomplished through the establishment of adequate ground cover vegetation within and upstream of the impacted BMP's. The sloped area adjacent to the HVAC support pads and at the upper reaches of the bioretention cell appears to be in vertical excess of 2:1. As permanent grassed stabilization of this slope is impractical, we are proposing a short (less than 4' in height) modular stack block retaining wall along this slope. This wall may be installed as to not impact the current bioretention cell surface area or function. in addition, areas of bare soil within the vegetated swales, slopes at BMP's and areas within the project site upstream of BMP's are to receive adequate measures to restore and maintain an acceptable grassed surface. Restoration of mulch depth and approved plantings within the bioretention cell will occur per the proposed Corrective Action Plan Schedule below. In addition and as suggested under our response to item 2 , the filter strip will be vegetated with an appropriate stand of fescue grass. Corrective Action Plan Schedule WFUBMC is proposing to perform the necessary corrective measures as described above in two phases of implementation. The first phase (Phase 1) of work would be performed within 30 days of NCDENR written acceptance of the proposed work and schedule herein. The second phase (Phase II) would be performed within 90 days of NCDENR written acceptance but no later than September 30, 2011. Later implementation of Phase It work is necessary due to the seasonal limitations of germination/ establishment of seed fescue and the viability of newly installed plant materials. Phase I Corrective Measures (Itemized) ■ Grout holes at level spreader ■ Rework /supplement No. 57 stone at filter strip ■ Remove sediment from bioretention cell surface ■ Remove debris/sediment from Forebays Phase II Corrective Measures Itemized • Install modular stack block retaining wall ■ Rework soil, provide permanent fescue grass seeding at prescribed areas • Restore bioretention cell mulch depth ■ Provide prescribed plantings at bioretention cell Primary Care of Mocksville BMP Inspection/ Report and NOV 2 We trust you will find the proposed maintenance and corrective action plan sufficient and through implementation of these plans the BMP's will be back in compliance with the approved plans and permit conditions. We also look forward to your returned correspondence with action plan approval. Since iy, �K Jahn D. Lipka, VE President, LPK Consulting, PA C: Tim Bell, WFUBMC Randall Marshall, WFUBMC Primary Care of Mocksville BMP Inspection/ Report and NOV 3 Homewood, Sue From: Tim Bell/Property Management [twbell@wfubmc.edu] Sent: Wednesday, June 08, 2011 1:33 PM To: Homewood, Sue Cc: Randall Marshall, Suzanne McKee Subject: Primary Care of Mocksville Attachments: image002.jpg Good afternoon Ms. Homewood, Thank you for taking the time to discuss the issue concerning the Primary Care of Mocksville. Can I have your availability for a conference call today? My Engineering Representative has a few questions as we prepare the response outlining our plan to address the issues identified in your May 25'h letter. Also, can I get a copy of the actual approved bio-retention plan for the site. If you have it electronically, just reply all and attach it. If it is in hardcopy form, my fax number is (336) 716-5466. Thank you Itim Bell j Director, Property Management & Operations 1Z1 Wake Forest - Baptist Baptist Health Medical Center Blvd., Winston-Salem, NC 27157 (336) 7i6-5439 WP i (336) 716-5466 Fax I twbell@wakehealth.edu #0W:!P4A&�VMKP STATE OF NORTH CAROLINA Department of Environment and Natural Resources Winston-Salem Regional Office FILE ACCESS RECORD SECTIO DATE/TIME NAME REPRESENTING tv /3 a a/Ca F y S Guidelines for Access: The staff of the -Winston-Salem Regional Office is dedicated to making public records in our custody readily available to the public for review and copying. We also have the responsibility to the public to safeguard these records and to carry out our day-to-day program obligations. Please read carefully the following before 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 for file review so you can be accommodated. Appointments are scheduled between 9:00 a.m. and 3:00 p.m. Viewing time ends at 4:45- p.m. Anyone arriving without an appointment may view the files to the extent that time and staff supervision are. available. 2. You must specify fifes you want to review. 3. There is no charge for 25 copies or less. If making more than 25 copies - there is a charge of 2.5 cents per page. (A page refers to a "single impression". A double sided copy is to be counted as 2 pages.) Costs for electronic copies will vary depending on the media type (diskette, tape, cd-rom), please see Receptionist for information regarding electronic copy charges. Payment is to be made by check, money order, or cash (see Receptionist). 4. FILES MUST BE KEPT IN THE ORDER YOU RECEIVED THEM. Files may not be taken from the office. No briefcases, large totes, etc. are permitted in the file review area. To remove, alter, deface, mutilate, or destroy material in one of these files is a misdemeanor for which you can be fined up to $500.00. 5. In accordance with General Statute 25-3-512, a $25.00 processing fee will be charged and collected for checks on which payment has been refused. 6. The customer must present a photo ID, sign -in, and receive a visitor sticker prior to reviewing files. FACILITY NAME 2. 3. 4. 5. Signature and Name of Firm/Business Date Please attach a business card to this form if available COUNTY -Da Time In Time Out .Itnle 20, 2008 Mr. Douglas Nelson Wl'U13M1,1_I' Prlmary Care, 1_1.0 Medical Center Bled. Winston-Salem, North Carolina 27157 A,� COPY -- W sfln Michael F. Fnsiey, Governor William GKoss Jr., swrctary Notch Camlina Depaitment of Environment and NILIM-al Resources Coleen It. Sullins, Director DIViSiOn. oi' Walcr Quality RECEwED N,C. DOM. of ENP JUL 2 5 2008 Winston Salem Regional Office Subject: Post -Construction Notification Project 11): Davie,lunl5_01 Project: WFUI3MC-Primary Care of'Mocksville Davie County, North Carolina Dcar Mr, Nelson: A review ol'the Financial Kesponsibility/Owncrship (FRO) form required under the SCdlmCnlalion Pollution Control Act received by uS on ,fungi 18, 2008 has determined that the Wl--'U13MC- Prir��ary Care of Moclaville project may be subject to a State Stornnvater Permit for Post -Construction. Unless excluded under the provisions of Session Law 2006-246, Section 8-Exclusions, you must submit within 30 clays, a schedule Cot- the project or an application for a Post -Construction State Stol'mwater Permit to: North Carolina Department of Environment and Natural Resources Division of Water Quality Stormwaler Permllling Unit Pos(-Construction Application 1617 Mail Service Center Raleigh, NC 27699-1617 The Post -Construction permit is in addition to a North Carolina General Permit (NCGO10000) permit received for constriction activity from the Division of Water Quality. For more information regarding MSI Post -Construction and Phase 11 Session Law 2006-246 please visit: httpa/h2o.enr.state.nc.us/su/NPD1 S_Phasc_l[ Stormwater_Profram.litin If you have any questions concerning this matter please feel fi-ec to call me at 919-733-5083 OLti2 or e-Ill'II me at bilLdiugoid�u7ncmail.nct. Sincerely, William 1-I. DiLlgUid, AICP Staff Planner Stormwaler Permitting Unit CC, Winston-Salem Regional Of'ficc 1 f j_ Stormwaler Permittim) Unit ]Files u)�, N'or[hC;trulina OK l ralur,11411 Nnrtls CX-OH a Division O' Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phonc (914) 733.5083 Customer service Internet www.ncwalcnlualily.org I-ocatiow 512 N. Salisbuty St. Raleigh, NC 27604 Fay (919) 733-9612 1-477-623-6748 An Equal Oppodur4ylAffirmative Action Employer - 50% Recycled110% Post Consumer Paper o�O� w A CO j r 4 -r T. R. Bowers Manager of Capital Projects Facilities Planning and Construction Medical Center Boulevard Winston Salem, North Carolina 27028 Michael F. Easley, Governor William 0. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources June 4, 2008 Subject: Stormwater Permit No. SW4080503 Primary Care of Mocksville High Density Commercial Bio-Retention Project .Davie County Dear Mr. Bowers: Coleen M. Sullins, Director Division of Water Quality The Stormwater Permitting Unit received a complete Stormwater Management Permit Application for the Primary Care of Mocksville project on June 2, 2008. 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 and Session Law 2006-246. We are forwarding Permit No. SW4080503, dated June 4, 2008, for the construction of the subject project. This permit shall be effective from the date of issuance until June 1, 2018, 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 inspection and maintenance of the stormwater management system will result in future compliance problems. If any palls, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within sixty (60) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter I SOB of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this pennit shall be final and binding. This project will be kept on file at the Winston-Salem Regional Office. If you have any questions, or need additional information concerning this matter, please contact Mike Randall at (919) 733- 5083, extension 360; or mike.randall@ncmail.net. Sincerely, ,or Coleen H. Sullins cc: Mark N. Breen, P.E. •Wif sto Sale tRegional;Office Lentral Files ,be SPU Files . ,t,t3,t:'�",,,1; u L.uil�rn�l, Nerfh Carolip-a Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone (919) 733-5083 Customer Service hrterrrct: snll..ncuaterc nalitv.org Location: 512 N. Salisbury St. Raleigh, NC 27604 Fax (919) 733-9612 i-i,77- 62:;-5743 An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper ROBI NSON & SAWYER, INC. 1� Fsx CONSULTING ENGINEERS & LAND SURVEYORS EST. 1962 707 EAST SECOND AVE. ` GASTONIA, NORTH CAROLINA 28054 " PHONE: 704-864-2201 ' FAX: 704-864-2276 LETTER OF TRANSMITTAL To: NCDENR 585 Wau htown Street-- W inston ,S m- -fNQ 27107 f Michael Randall Prim WE ARE SENDING YOU —Blue Prints Myiar T Sepia of Mocksville, NC X Attached Invoice _ Change Order Computer Disk Date: Job No. 5/21 /2008 08002.30 _—.—_- 1,c-9VED I 1 :�r.•>a�um i rtegional Gfi'ice r Under separate cover via Surveyor's Report Copy of Letter Plans __Other the following items: ,,. Rid!Contrcct Documants Quantity Original Date a es Revision Date File/ DWG No. Description 'L 04/05/08 Stormwater Management Permit Application 1 04/24/08 Check for $505 1 05/15/08 Bioretentiun Cell - O&M Agreement 1 05/15/08 O&M Manual 05/21/08 Stormwater Calculations 03/31/08 05115/08- - Sturrsiwa'.er Drainage Area Na;) - SMPf_V-' 03/31/08 05/15/08 Civil EC Flans (11 sheets) THESE ARE TRANSMITTED as checked below: As Requested For Review and Comment Rotum cotrVciao prints For your use Returned for Corrections Resubmit copies for.Approval X For Approval Approved as Submitted Approved as rioted Submit copies for distribution Other, REMARKS: Please call if you have any questions Copy to: file Prints Only DON SMITH H:1AdministrativetRS FORMS LISTS'Fax, Memos, Transmittals/Letter of Tr nsmiital Print Page - NC Areas Subject to Phase II Post -Construction & Other Stormwater Program Requirements Page I of 2 NC Areas Subject to Phase Ii Post -Construction CL Other Starmwater Program Requirements Map Legend Interstates Ererun Phase H City rrJ rr;f Local Roads ® Freshwater HQW Secondary ® HQWOR%v se SC s Roads Freshwater High Quaky or Primary Roads Oetatanding ® Phase !1 MS1 US Mighway ® ksW City kC Highway k517 County j—j CounI iCS None. Inc. area � 2drogra f' H h Y p Y None, uninc. area (Arcs) Phase 11 City Hydrography Phase I State St4rmw4rm►ra:er 1:24K Polygons Phase 11 City ETJ rl i l Municipal ® M¢We 11 C?ty s Boundaries blase 11 city a NSW City Stormwater Phase ll ripped Jurisdiction county Randleman Lake City in phase i1 _, lvatershed ur!�anize_Arca :ip.7c'r1.YcntY s. aastLI Covnt,. ® k7ater SL: d* Watershed CCtin:-.r 4i' �v SA-SnettiRh r;e::t�_ P:tL�e ii � ludterS it v :.Cant) `he rnap representations are the best available as a Merci, 1, 2007. Please check with the fecal government (city or County) in your iocabon to verify specific <<orrrw ater requirements. Areas subject to Stormwatcr Post-Constrt-ction (Pern+,ltting) ere hasei; on existing programs and Session Lav: 2C06-24b. NC Division o: Water Quality, 6l2/20CP9 hqp://204.21 ?.239.202/stor*Iiwater/orint.aspx?CMD =;NI7 &XViI. T=-80.6519805205I 5y2&YMIN=35.864j 999992549&X-NIP X... 6i2/2008 DWQ USE;O_NLY Date Received Fee Paid Permit Number State of North Carolina Department of Environment arid Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM 77ris form may be. photocopied for use as an original I. GENERAL INFORMATION 1. Applicants name (specify tree narne of the corpora tior i, individixal, etc. who owns the project): Wake Forest Univeisi Ba tist Medical Center 2. Print Owner/Signing Official'n narne and title (person legally responsible for facility and compliance): T.R_Bowers - Manager of Capital Projects - Facilities Planning and Construction 3. hailing Address for person listed in item 2 above: Medical Center Boulevard City:Winston Salem State _NC .w_ — Zip:27157 Phone: (336 i 716-7876 _ Fax: (336 ) 716-7878 Eiriail-,tbowers@wfubnic.edu 4. Project Name (subdivision, facility, or estabi:sh ent nar,ie - :should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Primary Care of WcLgville 5. Location of Project (street address): Cit✓:Niccksville , .2 � �_ County:Davie / T_ 6. Directions to project (from nearest major intersection): From 14Phead south on US 6t!Ii Ya kirviIle 11c ad. T,.irn Rift �t Iight for Angell Knoll to right){ Counfiy Lane jv:j leftt 'ro ject is at this iptersection_snuts_easfquadrarlt. r 7. Latiiude-.35 de rreees 54'51" _. Longiiude:80 de rg ,.es 34'57" of project 8. Contact person who can ai-uswi�r c-iesLc)ns abou, the project., Nazne:Mark N.?3reenLP.E. - -T _ Telephone Number: (:U4 k 864-2201 - Ernail::nbreenQrobinson-sa��pr.cotn_-..___-�_�__ , if. PEI`IMIT IIQF-0 iN-IA Tip: N': Form SW;,I-l01 Vvr::ioi? E.07 I of 4 1. specify whether project is (check one): ®New []Renewal ❑Modification 2. If.this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit number and its issue date (if known) 3. Specify the type of project (check one): . EJ-Low Density - ®High Density ❑Redevelop ❑General Permit ❑Universal SMP []Other 4. Additional Project Requirements (check applicable blanks): OCAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit LINAIDESStornwatei Information on required state permits can be obtained by contacting the Customer Service Center at 1.-877-623-6748. III. PROJECT INFORMATION 1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative (one to two pages) describing stormwater management for the project . 2Erass swales and a dry detention basin will be used to treat the stormwater runoff frorn Ghe building and oarkinLareas 2. Stormwater runoff from this project drains to the South Yadkin River basin. 3. Total Site Area. 1.5 acres 4. Total Wetlands Area: 0.0 acres 5. 100' Wide Strip of Wetland Area: 0.00 acres .(not applicafvie if no wetlands exist on scte) 6. Total Project Area**:1.5 acres 7. Project Built Upon Area:63 Y _% 8. How many drainage areas does the project have?One 9. Complete the following information for each drainage area. If there are more than two d-.ninaae areas i_n the project, attach an additional sheet with the information foreach area provided in the snrna formal as below. Basut Information M1� �, ,s ,, a rF Drainage Atha 1 „a , hr t Drunage area 2 `• �x a;,, Receiving Stream Name Bear Creek Stream Class & Index No. WS-IV 12-108-18-(3) Drainage Area (sf) Ex;sting Impervious* Area sf) 57817 0.0-- Pro-dosed Impervious*Area (so % Impervious* Area (total) 36,539 63 On -site Buildings (so On -site Streets (so On -site Parking (so On -site Sidewalks (so Other on -site (so Off -site (so Total (so: 9,987 ----- ---- 0.0 25,852 700 0.0 le 0.0 36,539 Form SWU-101 Version 8.07 Pa 2 of t` " Impervious area is defined as the built upon area is rcluding, but not limited to, buildings, road:;, parking areas, sidewalks, gravel areas, etc. 1 **Total project area shall be calculated based on the current policy regarding inclusion of wetlair s in the built upon area percentage calculation. 10. How was the off -site impervious area lister above derived?ti A IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS One of the following deed restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to the sale of any lot. If Iot sizes vary significantly, a table listing each lot number, size and the allowable built -upon area for each Iot must be provided as an attachment. Form DRFC-1 High Density Commercial Subdivisions . Form DRPC-2 High Density Developments with Outparcels Form DRPC-3 High Density Residential Subdivisions Form DRPC4 Low Density Commercial Subdivisions Form DRPC-5 Low Density Residential Subdivisions Form DRPC-b Low Density Residential Subdivisions with Curb Outlets By your signature below, you certify that the recorded deed restrictions and protective covenants for this -project shall include all the applicable items required in the above form `.that the covenants will be biziding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that thcy Will be retarded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state storanwater management perivit suppleines:l for.-II(s) ls,t�d below must be submitted for each BMP specified for'this project. Contact the Stormwater and Generrl Permits Unitat (419) 733-5083 for the status_ and availability of these forms. Form SW401-Low Density Form SW401-Curb Outlet System Form SW401-Off-Site System Form SW401-Wet Detention Basin Form SW4014nfiltration Basin Form SW401-Infiltration Trench Form SW401-Biorelention Cell Form SW40I-Level Spreader Form S1N401-Wetland . , _ Form SW403 -Grassed Swale Form SW401-Sand Filter' Low Density Supplement Curb Outlet System Supplement Off -Sit ' ; System Supp4mtent -Wet Dtt'�_ittion Basin Supplenent !nriltration Ba:;,n Supplement Uindz,rgt ound Infiltration Trevich Supplement 'Bioreterition Cell Supplement € evei.Spreadei,/Filler SL-ip/R: st+gyred Riparian Buffer Supplement C'arist►-ucted Wetland Supplement t;: assed Swale Supplement r'zltPr.5 r. on! ement Form SWU-101 Version KC i PaPc ? of 4 .- VI. SUBNInTAL 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 Iisted below. The complete application package should be submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the interactive online reap at http://h2o,cn r.s tatc.nc.us/s ulmsi ma s.htm 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 • Original and one copy of the Deed Restrictions & Protective Covenants Form • Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP • Permit application processing fee of $505 ($4,000 for Express) payable to NCDENR • Calculations & detailed narrative description of stormwater treatment/management • Copy of any applicable soil report • Three copies of plans and specifications (sealed, signed & dated), 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 sixes. -runoff calculation- - Drainage areas delineated - Vegetated buffers (where required) VII. AGENT AUTHORIZATION - If you wish to designate authority to another individual or firm so that they may provide information on yuur behalf, please complete this section. Designated agent (individual orfum):Robinson &Sawyer, Inc. Matlinh Address:707 Fast Second Avenue City:Gastonia State:NC _ ?ip:�. 4 1'ncn.-: 704 964-220i Fax: (704 — _ 8h 22:6_--- -� Entail:mbreen@robinson-sawyer.com _ VIII. APPLICANTS CERTIFICATION 1, (print or type name of person listed in General Information, item 2) T.R. $c;.K:: _ , certify that the information included on this permit application fomi is. to aie bit of rrty knowledge, corre.:t and that the project will be constructed in conformance with the appro7ed plan.:, dvl tbi requh-efi deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requiremen!s of 15A NCAC 2H .1000. Signature: 4 Form SWU-101 Version 8.07 Page. 4 of 4 r F.IVED I MAY 2 9 L 29i1$ ' WRzI I tinsnto�I OtH+`alem ca • : STORMWATER 'L CALCULATIONS FOR , Primary Care of Mocksville Medical Care Facility MOCKSVILLE, NORTH CAROLINA May 21, 2008 DEVELOPER: Wake Fcrest University Baptist Medical Center Medical Center Blvd. Winston-Salem, North Carolina 27157 Contact Person: T.R. Bowers (336) 716-7876 ENGINEER: Robinson & Sawyer, Inc. 707 East Second Avenue • Gastonia, North Carolina 28054 - - (704) 864-2201. CA1�,o,,r q �Q.Qp�ESSIp;;�y% } SEAL = _ 13037 r DONAL01Y SMITH, PE AL NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BiORETENTION CELL SUPPLEMENT Permit Number: (to be provided by DWQ) �°� warFRp G -c This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. s Y -^. ;:5.-.,C�.�J s^. rY...�...d. �Lr". _hT'dL�t_1�-'r'w4 I' PROJECT INFORMATION _ '�, Project name T �^ Primary Care of Mocksville.; Contact name Donald Smith Phone number 704-864-2201 Date May 20. 2008 Drainage area number _K�, E51_UNtlNf 0RMATIOPJ %a Site Characteristics Drainage area 57,817:00 ft' Impervious area 37.880.00 ft' Percent impervious 65.5% % Design rainfall depth . 1.00 inch Peale Flow Calculations 1-yr, 24-hr runoff depth 1-yr, 24-hr intensity Pre -development 1•yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Pre/Post 1-yr, 24-hr peak control Storage Volume: Non -SR Waters Design volume Storage Volume: SR Waters• Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr runoff Minimum volume required Volume provided Cell Dimensions Ponding depth of water Ponding depth of water Surface area of the top of the bioretention cell Length: Width: -or- Radius Soils Report Summary Drawdown time, ponded volume Drawdown time, to 24 inches below surface Drawdown time, total: In -situ soil: Soil permeability Planting media soil. - Soil permeability Soil composition % Sand (by weight) % Fines (by weight) 0% Organic (by weight) 1.00 in 2,77 inlhr 0.90 ft3lsec 2:62 ft'/sec 1.72 ft/sec . 3,109,00 ft' ft3 ft3 0.00 ft, ft3 9.00 inches 0.75 ft' 4 543.00'iC 58.00 ft 95.00 ft ft NIA'hr -.'NIA hr . 0.00 W .NIA inlhr 6.56 inlhr 87% .9% 4% Total: 100% OK OK OK OK Insufficient ponded volume drawdown time. Insufficient 24-inch drawdown time:. OK OK OK OK Form SW401-Bioretention-Rev.3 Parts I and 11. Design Summary, Page 1 of 2, rermn Nurnmr. (to be provided by DWO) Phosphorus Index (P-Index) $asin Elevations Temporary pool elevation Planting elevation (top of the mulch) Bottom of the cell Planting depth Depth of mulch SHWT elevation N/A (unitless) Insufficient P-Index. 835.75 fmsl 835.00 fmsl OK 833.00 fmsl 2.00 ft 3.00 inches OK 822.00 fmsl OK Are underdrains being installed? Y (Y or N) How many clean out pipes are being installed? 5 What factor of safety is used for sizing the underdrains? (See 10.00 BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and 1 ft the bottom of the cell to account for underdrains Bottom of the cell required 832.00 fmsl Distance from bottom to SHWT 10.00 It Type of bioretention cell (answer'Y" to only one of the two following questions): Is this a grassed cell? Y (Y or N) Is this a cell with trees/shrubs? N (Y or N) Planting Plan Number of tree species NA Number of shrub species NA Number of herbaceous groundcover species 3 Additional Information Does vo!uine io excess of the design volume bypass the Y (Y or N) bioretentior. cell? Does volume in excess of the design volume flow evenly distributed Y (Y or N) through a vegetated filter? What is the length of the vegetated filter? 30 ft Does the design use a level spreader to evenly distribute flow? Y (Y or N) Is the BMP located at least 30 feet from surface waters (50 feet if Y (Y or N) SA waters)? Is the BMP located at least 100 feet from water supply wells? .Y �(Y or N) Are the vegetated side slopes equal to or less than 3:1? Y. (Y or N) Is the BMP located in a recorded drainage easement vAth a Y• (Y or N) recorded access easement to a public Right of Way (ROW)? Inlet veiocity (from tr9atment system) 1.00 it/sec Is the area surrounding the cell likely to undergo development in N (Y or N) the future? Are the slopes draining to the bioretention cell greater than 20%? N, (Y or N) Is the drainage area permanently stabilized? • Y ' (Y or N) Pretreatment Used , . . (Indicate Type Used with an "k" in the shaded cell) Gravel and grass X (8`inches gravel followed by 3-5 ft of grass) Grassed swale Forebay X OK OK OK OK OK OK OK OK OK Submit a level spreader supplement. OK OK OK OK OK OK OK OK Nil Form SW401-13ioretention-Rev.3 Paits I and IL design Summary, Page 2 of 2 Storm Seaver Computation Sheet Rbbi-pnal Medical: Center '.= Par.King<Add.it,ion. DINE: 5120108 IClevelan.tl � PROJECT #: 800230. CMP n= 0.024 RAINFALL FREQ: 10 YR REV: BY: Matthew.,. Ward PVC n= 0.011 (unless noted ctherwise) :. j I RCP n= 0.013 INTENSITY: 6.92 INIHR Structure Length Drainage Area Runoff Wlx"C" Intensity Total Pipe Full Flow Full Invert Slope of Rim Pipe Acres Coeff (Acres) Runoff Dia Capacity Velocity Elevation Sewer Elevation 1 Type From To (Feet) lncrem. i Total t "c" Increm. Total In/Hr cfs in cfs fps Out In ftlft YI .1 -FES1 ` 31 ' 1.33 1.33 0.73 0.97 0.97 6.92 6.72 18 7:54 4.27 -83238 832.22 0.0052 835,75 RCP Permit Number: (to be provided by DWQ) Drainage Area Number: Bioretention Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elerr ents noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Important operation and maintenance procedures: - Immediately after the bioretention cell is established, the plants will be watered twice weekly if needed until the plants become established (commonly six weeks). - Snow, mulch or any other material will NEVER be piled on the surface of the bioretention cell. - Heavy equipment will NEVER be driven over the bioretention cell. - Special care will be taken to prevent sediment from entering the bioretention cell. - Once a year, a soil test of the soil media will be conducted. After the bioretention cell is established, I will inspect it once a month and within 24 hours after every storm event greater than 1.0 inches (or 1. inches if in a Coastal County), Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be -performed as follows. Any problems that are found shall be repaired immediately. rBMP element: Potentialproblems: How I will remediate theproblem: The entire BMP Trash debris is present. _ Remove the_trash/debris. The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to bioretention cell erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer apelication. The inlet devic-n pipe, The pipe is clogged (if Unclog the pipe. Dispose of the stone verge or swale applicable). sediment off -site. _ The pipe is cracked or Replace the pipe. otherwise damaged (if applicable). ^� Erosion is occurring in the Regrade the swale if necessary to swale (if applicable). smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. Stone verge is clogged or Remove sediment and clogged covered in sediment (if stone and replace with clean stone. -- -- applicable). — -- - --- - Form SW401-Biorctention O&M-Rev.3 Page I OFF BMP element: Potential roblems: How I will remediate the problem. The pretreatment area Flow is bypassing Regrade if necessary to route all pretreatment area and/or flow to the pretreatment area. flies have formed. - Restabilize the area after grading. Sediment has accumulated to Search for the source of the a depth greater than three sediment and remedy the problem if inches. possible. Remove the sediment and restabilize the pretreatment area. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. The bioretention cell: Best professional practices Prune according to best professional vegetation show that pruning is needed practices. to maintain optimal plant health. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Tree stakes/wires are present Remove tree stake/wires (which six months after planting. can kill the tree if not removed). The bioretention cell: Mulch is breaking down or Spot mulch if there are only random soils and mulch has floated away. void areas. Replace whole mulch layer if necessary. Remove the remaining much and replace with triple shredded hard wood mulch at a maximum depth of three inches. Soils and/or mulch ate- Determine the extent of the clogging clogged with sediment. - - remove and replace either Just the top iayers or the entire media as needed. Dispose of the spoil in an appropriate off -site location. Use triple shredded hard wood mulch at a maximum depth of three inches. Search for the source of the sediment and remedy the problem if vossible. An annual soil his shows that Dolomitic lime shall be applied as pH has dropped or heavy recommended per the soil test and metals have accinnulated in the soil media. toxic soils shall be removed, disposed of properly and replaced with new planting media. Form SW401-Bioretentior. O&A-I-P.ev.:; Page 2 of 4 BMP element: Potentialproblems: How I will remediate theproblem: The underdrain system Clogging has occurred. Wash out the underdrain system. if applicable) The drop inlet Clogging has occurred. Clean out the drop inlet. Dispose of the sediment off -site. The drop inlet is damaged Repair or replace the drop inlet. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919- outlet. 733-1786. Form SW401-Bioretention O&M-Rev.3 Permit Number: (to be provided by DWQ) - ' I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name:WFUBMC - Primary Care of Mocksville BMP drainage area number: 1&2 Print name:T.R. Bowers Title:Manager of Capital Projects - Facilities Planning and Construction Address:Medieal Center Blvd. Phone: 336-716-7876 Signature: Date: Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, 1�7 J� , a Notary Public for the State of or ' Y-z�,. County ofdo hereby certify that % 4'we'ci personally appeared before me'this /e'`'`, day of jY t4 , Rde,� _, and acknowledge the due execution of the forgoing bioretention maintenance requirements. Witness my hand and official seal, a F1�11_• My commission expires_%Y%/� Form SW401-Bioretention I&fit-Rev. 2 Page 4 of 4 RECEIVED ,N.C. Dea. of ENR 1 MAY 2 9 2008 Winston-Salem Regional Office An Operations and Maintenance Manual for: Bloretention Cell Located at the: Primary Care of Mocksville Mocksville, North Carolina Manual developed by: Robinson & Sawyer, Inc. 707 E. 2nd Ave., Gastonia, NC 28054 May 15, 2008 711 And based on Chapters 7 and 12 of the North Carolina Division of Watt; 1'.. Qualky, Storm Water Best Management Practices Manual, .July 2007 H . C!4... iF SEA! 13037 %�d'yGINEEQ:• ' Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities 7. BMP Inspection and Maintenance 7.1. The Importance of Maintaining BMPs Most of this manual is devoted to proper design of storm water BMPs, a task that requires a significant investment of effort and expense. Once they are constructed, BMPs are crucial in protecting water quality from the impacts of development projects. If designed correctly, BMPs can also be an aesthetic asset to the development. However, no matter how well they are designed and constructed, BMPs will not function correctly nor look attractive unless they are properly maintained. Most maintenance problems with BMPs are less costly to correct when they are caught early — as the old adage goes, "an ounce of prevention is worth a pound of cure." Regular inspection and maintenance is an ongoing legal requirement after the BMP is constructed -- inspections must be completed at appropriate times throughout the year and inspection records must be available upon request. An appropriate professional should conduct BMP inspections. NC State University offers a BMP Inspection and Maintenance Certification Program; more information is available at their web site: htto://www.bae.ncsu.edu/DeoDle/faculty/hunt/. This chapter will discuss the logistical issues associated with BMP inspection and maintenance as well as provide an overview of some of the tasks associated with maintaining BMPs. Each of the BMP chapters in this manual includes a table explaining the specific inspection and maintenance activities required to ensure the proper functioning of the BMP. 7.2. Legal and Financial Issues 7.2.1. Access and Maintenance Easements BMPs must have access and maintenance easements -to provide the legal authority r"or inspections, maintenance personnel and equipment. The !ocation and configuratior of easements must be established during the design phase and should be clearly shown on the design drawings. The entire footprint of the BMP system must be included in the access and maintenance easement, plus an additional ten or more feet around the BMP to provide enough room to complete maintenance tasks. -This BMP system includes the side slopes, forebay, riser structure, BMP device, and basin outlet, darn embankment, outlet, and emergency spillway. Access and maintenance easements must be designed and built with a concept of the maintenance tasks that may be needed. If heavy equipment will be necessary to perform maintenance tasks (such as for devices with a forebay that will require sediment cleanout), typically a roadway with a minimum width of ten feet to the BMP must be available. Easements are usually owned and maintained by the owner of the BMP facility, whether an individual, a corporation, or a government. Easements for BMPs that are not publicly maintained should include provisions to permit public inspection and maintenance. Page 2 of 13 Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities I 7.2.2. Inspection and Maintenance Agreements BMP facilities are typically built, owned and maintained by non -governmental entities. To insure proper long-term maintenance, a signed,and notarized Inspection and Maintenance Agreement must accompany the design plans for any BMP. An Inspection and Maintenance Agreement will include the following: - The frequency of inspections that are needed (based on the type of BMP proposed). - The components of the BMP that need to be inspected. - The types of problems that may be observed with each BMP component. The appropriate remedy for any problems that may occur. The most effective Inspection and Maintenance Agreements are site specific for the particular BMP components that are used on the site as well as any conditions that are unique to the site (for example, the presence of steep slopes that should be inspected for soil stability). Table 7-1 Required Inspection Frequency for BMPs Inspection Frequency BMPs Monthly and within 24 hours after every water Stormwater wetlands quality storm (greater than 1.5 inches in Wet detention basins Coastal Counties and greater than 1.0 inch Bioretention cells elsewhere)_ Quarterly and within 24 hours after every water Level spreaders quality storm (greater than 1.5 inches in Infiltration devices Coastal Counties and greater than 1.0 inch Sand filters elsewhere) Extended dry detention basins Permeable pavement Rooftop runoff management Filter strips Grassed swales j Restored riparian buffers " ' Although these devices require quarterly inspection, mowing will usually be done at more frequent intervals during the growing season. To summarize Table 7-1, devices that include vegetation in a highly. engineered system require inspection monthly and after large storm events to catch any problems with flow conveyance or vegetative health before they become serious. All other BMPs should be inspected quarterly and attar large storm events. The signed and notarized Inspection and Maintenance Agreement should be filed with the appropriate Register of Deeds. The responsible party should keep a copy of the Inspection and Maintenance Agreement along with a current set of BMP plans at a known set location. 7.2.3. Inspection -and Maintanance Record -Keeping All inspection and maintenance activities st;r uld be recorded. One easy way to do this Page 3 of 13 Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities is to create an Inspection and Maintenance checklist based on the Inspection and Maintenance Agreement. The checklist, at a minimum, should include the following: - Date of inspection. - Condition of each of the BMP elements. - Any maintenance work that was performed (as well as who performed the work). - Any issues noted for future maintenance (sediment accumulating, vegetation needing pruning or replacement, etc.). Each project should have a maintenance record. Records should be kept in a log in a known set location. Any deficient BMP elements noted in the inspection should be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Major repairs or maintenance work should include the same level of inspection and documentation as original installations. Inspection checklists and record logs should be kept in a known set location. 7.2.4. Maintenance Responsibilities As stated in the section above, maintenance is usually the responsibility of the owner, which in most cases is a private individual, corporation, or homeowners association. Simple maintenance items such as minor landscaping tasks, litter removal, and rnowing can be done by the owner, or can be incorporated in conventional grounds maintenance contracts for the overall property. Although a nonprofessional can undertake many maintenance tasks effectively, a professional should be consulted periodically to ensure that all needs of the BMP facility are met. Some elements that can need professional judgment include structures, outlets, and embankments/dams by a professional engineer, as well as plant system health by an appropriate plant professional. Some developing problems may not ba obvious to the untrained eye. In addition, it is advisable to have professionals do the more difficult or specialized work. Filling eroded areas and soil -disturbing activities, such as re -sodding or replanting vegetation, are tasks that are best assigned to a professional landscaping firm. If the work is not done properly the first time, not only will the effort have been wasted, but also the facility may have been damaged by excessive erosion. Grading and sediment removal are best left to professional contractors. Appropriate professionals (e.g. SNIP maintenance specialists, professional engineers, aquatic plant specialists., etc.) should be hired for specialized tasks such as inspections of vegetation and structures. 7.2.5. Providing for Maintenance Expenses The expenses associated with maintaining a BMP are highly dependent on the BMP type and design. •However, the most important factor that determines the cost of BMP maintenance is the condition of the drainage area upstream of the BMP. If a drainage area conveys -a high load of sediment and other pollutants to a BMP, the cost of maintaining the BMP will increase dramatically. Preventing pollution in the drainage area as much as possible will reduce the cost of BMP maintenance. -" Pa'e 4 of 13 Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities A funding mechanism should be created and regularly funded with an amount that provides enough money to pay for the maintenance expenses over the lifetime of the BMP. One option is to establish an escrow account, which can be spent solely for sediment removal, structural, biological or vegetative replacement, major repair, or reconstruction of the BMPs. In the case of a residential subdivision, the escrow account could be funded by a combination of an initial payment by the developer and regular contributions by the homeowners' association. For an example of how to legally structure such an account, please see the Phase If model stormwater ordinance at the Division of Water Quality's web site: htt ://h2o.enr.state.nc.us/su1 hase 2 mod ord.htm. Routine maintenance costs are relatively easy to estimate, and include the expenses associated with the following activities: - Conducting BMP inspections at the intervals shown in Table 7-1. -- Maintaining site.safety, including any perimeter fences and other access inhibitors (trash racks or pipe grates). - Removing trash. - Removing sediment that has accumulated in any components of the BMP. - For infiltration -type systems, maintaining the filtering media and cleaning or replacing it when necessary. - Restoring soils to assure performance. - Pruning woody vegetation pruning. - Replacing dead vegetation. - Stabilizing any eroding side slopes. - Repairing damaged or eroded outlet devices and conveyance systems. - Repairing embankments, dams, and channels due to erosion or rodents. Emergency maintenance costs are more difficult to estimate. They depend on the frequency of occurrence and the nature of the problem, which could vary from storm erosion repairs to complete failure of a structure. 7.3. Summary of BMP Maintenance Tasks 7.3.1. Emergency Maintenance Maintenance after floods and other emergencies requires immediate mobilization. it can include replanting and repairs to structures. Living systems are likely to need at least minor repairs after emergencies. Following an emergency such as a•flood, standing water may pose health risks because of mosquitoes. Mosquito control should be considered if this becomes a problem. For all installations obstructions and debris deposited during storm events should be removed immediately. Exceptions include debris that provides habitat and does not damage vegetation or divert currents to, from, or in the BMP. In fact, because of the high quality habitat that can be found in woody debris, careful re -positioning rather than complete removal may be.desirable. There may be instances where debris is even added. Such locations should be noted so that this debris is not accidentally removed. Educating adjacent property owners about the habitat benefits of debris .Ind vegetation can decrease requests for removal. Paae of 13 Primary Care of Mocksville — Operation and Maintenance Manual for BMP_Facilities 7.3.2. Debris and Litter Removal Regularly removing debris and litter is well worth the effort and can be expected to help in the following ways: - Reduce the chance of clogging in outlet structures, trash racks, and other facility components. - Prevent damage to vegetated areas. - Reduce mosquito breeding habitats. -- Maintain facility appearance. - Reduce conditions for excessive surface algae. - Reduce the likelihood of stagnant pool formation. Special attention should be given to removing floating debris, which can clog the outlet device or riser. 7.3.3. Sediment Removal and Disposal Sediment gradually accumulates in many BMPs. For most BMPs, accumulated sediment must eventually be removed. However, removal intervals vary so dramatically among facilities that no "rules of thumb" are applicable. The specific setting of a BMP is important in determining how often sediment must be removed. Important factors that determine rates of sedimentation include the current and future land uses upstream and the presence of other sediment -trapping BMPs upstream. Before installing a BMP, designers should estimate the lifetime sediment accumulation that the BMP will have to handle. Several time periods may be considered, representing expected changes in land use in the watershed. To estimate sediment accumulation, first, an estimate of the long term sediment load from upstream is needed, then an estimate of BMP sediment removal efficiency (see Sections 3.0 and 4.0). The analysis of watershed sediment loss and BMP efficiency can be expedited by using a sedimant delivery computer model. The frequency of sediment removal is then based on the sediment accumulation rate described above versus the amount of sediment storage volume that is inherently, provided in the BMP without affecting treatment efficiency or stormwater storage volume. Again, the frequency of'sediment removal is BMP and site specific, and could be as frequent as every couple years, or as long as 15-25 years. The volume of sediment needing to be removed and disposed of per dredging cycle is the volume calculated above multiplied by any density or dewatering factors, as appropriate. Wet sediment is more difficult and expensive to remove than dry sediment, Ideally, the entire facility can be drained and allowed to dry sufficiently so that heavy equipment can operate on the bottom. Provisions for draining permanent pools should be incorporated in the design of water impoundments where feasible. Also, low flow channels and outlets should be included in all BMPs to bypass stormwater flow during maintenance. However, in many impoundments periodic rainfall keeps the sediment ;oft, preventing access by heavy equipment. In these cases, sediment may have to be removed from the shoreline by using backhoes, grade-alls, or similar equipment. Proper disposal of the sediment removed from a BMP is required. It is least expensive if an onsite area or a nearby site has been set aside for the sediment. This area roust be Paac.6 of i 3 Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities located outside of the floodplain. If such a disposal area is not set aside, transportation and landfill tipping fees can greatly increase the cost of the BMP, especially where disposal of wet sediment is not allowed in the local landfill., Often, the material must be dewatered before disposal, which again adds more cost and requires land area where wet material can be temporarily placed to dry. Sediment removal is usually the largest single cost of maintaining a BMP facility, so the necessary funds should be allocated in advance. Since sediment removal costs are so site specific and dependent on disposal plans, it is difficult to provide good estimates. Actual estimates should be obtained during the design phase of the BMP from sediment removal contractors based on the planned situation. The estimates should include: mobilization expenses, sediment removal expenses, material transport expenses (if applicable), and disposal expenses (if applicable). 7.3.4. Stability and Erosion Control The best way to promote soil stability and erosion control is to maintain a healthy ground cover in and around BMPs. Areas of bare soil quickly erode, potentially clogging the facility with soil and threatening its integrity. Therefore, bare areas must be re -stabilized as quickly as possible. Newly seeded areas should be protected with mulch and/or an erosion mat that is securely staked. For BMPs that rely on filtration, such as bioretention facilities, it is critical that adjacent soils do not contaminate the selected media during or after construction. If the site is not permanently stabilized with vegetation when the filter media is installed, the best design practice is to specify sod or other rcbust erosion control practices for all slopes in and immediately around the BMP. Erosion is quite common in or around the inlet and outlet of the BMP facility and should be repaired -as soon as possible. Erosion control activities should also extend to areas immediately downstream of the BMP. �0, The roots of woody growth such as young trees and bushes in embankments are destabilizing. Consistent mowing of the embankment controls stray seedlings that take root. Woody growth, such as trees and bushes, further away from the embankment should not pose a threat to the stability of the embankment and can provide irnportant runoff filtering benefits. Trees and bushes should be planted outside maintenance and access areas. Animal burrows also diminish the structural integrity of an embankment. Muskrats, in particular, burrow tunnels up to 6 inches in diameter. Efforts should be made to control animal burrowing. Burrows should be filled as soon as possible. 7.3.5. Maintenance of Mechanical Components Each type of BMP may have mechanical components that need periodic; attention. For example, valves,.sluice gates, fence gates, locks, and access hatches should be, functional at all times_ . The routine inspection, exercising, and preventive maintenance on such mechanical components should be included on a routine inspection/maintenance checklist. Page 7 of 13 Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities 7.3.E. Vegetation Maintenance Vegetation maintenance is an important component of any maintenance program. The grasses and plants in all BMPs, but particularly in vegetative BMPs such as filter strips, grass swales, restored riparian buffers, bioretention facilities, and stormwater wetlands, require regular attention. The development of distressed vegetation, bare spots, and rills indicates that a BMP is not functioning properly. Problems can have many sources, such as: - Excessive sediment accumulation, which clogs the soil "pores and produces anaerobic conditions. - Nutrient deficiencies or imbalances, including pH and potassium. - Water-logged conditions caused by reduced soil drainage or high seasonal water table. - Invasive weeds. The soil in vegetated areas should be tested every other year and adjustments made -to sustain vigorous plant growth with deep, well -developed root systems. Aeration of soils is recommended for filter strips and grassed swales where sediment accumulation rates are high. Ideally, vegetative covers should be mown infrequently, allowing them to develop thick stands of tall grass and other plant vegetation. -Also, trampling from pedestrian traffic should be prevented. Areas immediately up- and downstream of some BMP plant installations often experience increased erosion. Although properly designed, located, and transitioned installations experience this effect to only a minor degree, all erosion should be repaired immediately to prevent spreading. Live stakes, live fascines, and other soil bioengineering techniques, possibly in combination with 3-D geotextiles, can be applied to erosion in natural drainage ways with minor grading. Table 7-2 below describes some specific vegetation maintenance activities at various types of BMPs. It is important to note that DWQ has some specific requirements related to some management practices, such as those performed within buffers, that must be followed. In addition, any vegetation that poses threats to human safety, buildings," fences, and other important structures should be removed. Finally, vegetation maintenance activities naturally change as the project ages from construction, when the vegetation is still getting established, to a mature state. - 7.3.7. Maintenance of the Aquatic Environment An important yet often overlooked aspect of non -routine maintenance cf BMPs that maintain a permanent pool of water is the need to regularly monitor and manage conditions to promote a healthy aquatic environment. An indicator of excess nutrients (a common problem) is excessive algae growth in the permanent pool of water. In most cases, these problems can be addressed by encouraging the growth of more desirable aquatic and semi -aquatic vegetation in and around the permanent pool. The'piants selected should be tolerant of varying water levels and have a high capacity to incorporate the specific nutrients associated with the problem. If alga: proliferation is not addressed, algae -laden water will be washed downstream during rain events and may contribute to nuisance odors and stresses in downstream aquatic habitat. - Pa,-, 8 of 13 Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities i 7.3.8. Insect Control Ponded water can function as breeding grounds for mosquitoes and other insects. Mosquito problems can be minimized through proper design and maintenance. The best control technique for BMPs that maintain a permanent pool of water is to ensure that it does not develop stagnant areas. BMPs with permanent pools should include a source of steady dry -weather flow. Promptly removing floatable debris helps eliminate areas where water can collect and then stagnate. In larger basins, fish, which feed on mosquito larvae, can be stocked. Additionally, splash aerators can be employed to prevent stagnant water, however, this requires electricity at the site, increases maintenance costs, and must be properly designed so as to not decrease the settling efficiency of the BMP. Table 7-2 Vegetation Maintenance for BMPs Maintenance Instructions T Activity Replacement of All dead plants should be removed and disposed of. Before vegetation that Dead Plants has failed on a large scale is replaced, the cause of such failure should be investigated. If the cause can be determined, it should be eliminated before any reinstallation. Fertilization The objective of fertilizing at a BMP is to secure optimum vegetative growth rather than yield (often the objective with other activities such as farming). Infertile soils should be amended before installation and then fertilized periodically thereafter. Fertilizer can be composed of minerals, organic matter (manure), compost, green crops, or, other materials. _ Irrigation/ Watering of the vegetation can often be required during the germinaticn Watering and establishment of the vegetation, as well as occasionally to preserve i the vegetation through drought conditions. This can typically be accomplished by pumping water retained in the BMP or from the stream, installing a permanent irrigation system or frost -proof hose bib, or wing portable water trucks. Mulching _ Mulching should be -used to maintain soil temperature and moisture,; as well as site aesthetics. A half -inch layer is typically adequate. Ider:0 mulch should be removed before winter to prevent an infestation of rodents. Weeding Weeding is often necessary in the first growing season, particularly if herbaceous grasses are out -competing the young woody vegetation 1 growth. The need for weeding may be largely eliminated by minimizing the amount of seed used for temporary erosion control. Weeding niay also � be required if, over time, invasive or undesirable species are. entering the site and out -competing plants that are specifically involved in the treatment of the storm water. _ Cultivating/ Hoeing is often required to loosen overly compacted soil and eliminate Hoeing weeds that compete with the desirable vegetation. Pruning Pruning is used to trim to shape and remove -dead wood. It can force single -shoot shrubs and trees to assume a bushier configuration. Thinning Thinning dense brush may be necessary for particular species to thrive, increase the vigor of individual specimens, to reduce flow obstructions, and to increase the ability of maintenance staff to access the ortire uMF'. - Tail maturing trees, for the most ;part, h?vi: no plrr„a in a HNIP (except for buffers) and should be removed as soon as pr)ssblo^_ `"J % 0 - 1 Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities Staking Saplings of tall trees planted in or near the BMP may require staking. Care should be taken not to damage the tree's roots with stakes. Stakes should be kept in place for 6 to 18 months, and the condition of stakes and ties should be checked periodically. Wound Dressing The wounds on any trees found broken off or damaged should be dressed following recommendations from a trained arborist. Disease Based on monitoring observations, either insecticides or (preferably) Control organic means of pest and fungal control should be used. Protection from Fencing and signage should be installed to warn pedestrians and to Animals and Human prevent damage due to trampling. These measures are often most Foot Traffic necessary during the early phases of installation but may be required at any time. Measures for controlling human foot traffic include signs, fencing, floating log barriers, impenetrable bushes, ditches, paths, and piled brush. Wildlife damage is caused by the animals browsing, grazing, and rubbing the plants. The use of chemical wildlife repellents should be avoided. Fences and meshes can be used to deter entry to the BMP. Tree _ tubes can be used to prevent damage to individualspecimens. Mowirq Mowing of perennial herbaceous grasses and wildflowers, especially once seed heads have set, promotes redistribution of seed for this self- sustaining system. Mowing should be carefully controlled, however, especially when performed for aesthetics. As adjacent property owners and customers in general learn more about BMPs, their vision of what is aesthetically pleasing can change. Grasses, in healthy herbaceous. stands, should never be mown more than once per year. 12.4. Biorention Cell Maintenance 12.4.1. Common Maintenance Issues Bioretention facilities require plant, soil, mulch, and under. -drain maintenance to ensure optimal infiltration, storage, and pollutant removal capabilities. Bioretention maintenance requirements are typical landscape care procedures and include: 1. Watering: Plants should be selected to be tolerant of the bioretention facility particular conditions. Watering should not be required after establishmen (about 2 to 3 years). However, watering may be required during prolonged dry periods .after plants are established. 2. Erosion Control: Inspect flow entrances, ponding area, and surface overflow areas periodically. Replace soil, plant material, and/or mulch in areas where erosion has occurred. Erosion problems should not occur with proper design .except during extreme weather events. If erosion problems do occur, the following issues should be re -assessed: flow volumes from the contributing drainage area and bioretention size; flow velocities and gradients within the bioretention facility; flow dissipation and erosion protection methods in the pretreatment and in -flow areas. If sediment is deposited in the bioretentionl facility, immediately determine the source, remove excess deposits, and correc` the problem. 3. Plant Material: Depending on plants selected and aesthetic requirements, occasional pruning and removal of dead plant material may be necessar;•. Replace all dead plants. However, if specific plants consistently have a high mortality rate, assess the cause and replace with appropriate species. periodic Page 10 of 13 Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities weeding is necessary until groundcover plants are established. Weeding should become less frequent if an appropriate plant density has been used. 4. Nutrients and Pesticides: The soil media and plant material should have been selected for optimum fertility, plant establishment, and growth within the particular conditions of each bioretention facility. Nutrient and pesticide inputs should NOT be required and will degrade the pollutant processing capability of the bioretention facility, as well as contribute to additional pollutant loading to receiving waters. By design, bioretention faciiilities are typically specified in watersheds where phosphorous and nitrogen levels are often elevated. Therefore, these should not be limiting nutrients with regard to plant health. If in question, have the soil analyzed for fertility. 5. Mulch: Replace mulch annually in bioretention facilities where heavy metal deposition is likely (e.g., drainage areas that include commercial/industrial uses, parking lots, or roads). In residential or other settings where metal deposition is not a concern, replace or add mulch as needed to maintain a 2 to 4 inch depth at least once every two years. 6. Soil media: Soil mixes for bioretention facilities are design to maintain long-term fertility and pollutant processing capability. Estimates from metal attenuation research indicates that metal accumulation should not present a toxicity concern for at least 20 years in bioretention facilities (USEPA 2000). Further, replacing mulch where heavy metal deposition is likely provides an additional factor of safety for prolonged bioretention performance. If in question, have soil analyzed for fertility and pollutant levels. When the filtering capacity diminishes substantially (e.g., when water ponds on the surface for more than 12 hours), remedial actions must be taken. One possible problem is that underdrain pipe systems can become clogged. Annual flushing through pipe cleanouts is recommended to facilitate unclogging of the pipes without disturbing the bioretention areas. if the water still ponds for more than 12 hours, the top few inches of material should be removed and replaced with fresh material. The removed sediments should be disposed of in an acceptable manner (e.g., landfill). If that does not solve the problem, more extensive rebuilding is required. 12.4.2. Inspection and Maintenance Provisions Important Operation and Maintenance procedures: ■ Immediately after the bioretention cell is established, the plants will be watered twice weekly if needed until the plants become established (commonly six weeks). • Snow, mulch or any other material will NEVER be piled on the GUrface of the bioretention cell. ■ Heavy equipment will NEVER be driven over the bioretention cell. ■ Special care will be taken to prevent sediment from entering the, bicretention cell. • Once a year, a soil test of the soil media will be conducted. After the bioretention cell is established, I will inspect it once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records -of inspection and maintenance will be kept in a known s.:!t location and will be available upon request: Inspection activities shall be performed as follows. Any problems that are. found shall be repaired immediately. 'w! I I of 13 Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities Table 12-2 Inspection and Maintenance Provisions for Bioretention Areas BMP element: Potential problems: How to remediate the roblem: The entire BMP Trash/debris is present. Remove the trash/debris. Regrade the soil if necessary to remove the gully, and then The perimeter of the Areas of bare soil and/or plant a ground cover and bioretention cell erosive gullies have formed. water until it is established. Provide lime and a one-time fertilizer ap lication. The pipe is clogged (if Unclog the. pipe. Dispose of applicable). the sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged (if applicable). The inlet device: pipe, Regrade the swale if stone verge or swale Erosion is occurring in the necessary to smooth it over Swale (if applicable). and provide erosion control devices such as reinforced u turf matting or riprap to avoid future problems with erosion. Stone verge is clogged or Remove sediment and covered in sediment (if clogged stone and replace applicable). with clean stone. Flow is bypassing Regrade if necessary to route - pretreatment area andler all flow to the pretreatment gullies have formed. area. Restabilize the area after grading. ` Search for the source of the sediment and remedy the Sediment has accumulated to problem if -.possible. Remove a depth greater than three the sediment and restabilize inches. the pretreatment area. The pretreatment area _ Provide additional erosion protection such as reinforced Erosion has occurred. turf matting or riprap if needed to prevent future erosion problems. Weeds are present.. Remove the weeds, preferably by hand. Page 12 of 13 Primary Care of Mocksville — Operation and Maintenance Manual for BMP Facilities 4 Table 12-2, continued Best professional practices Prune according to best show that pruning is needed professional to maintain optimal plant practices. health. Determine the source of the problem: soils, hydrology, disease, etc. Remedy the The bioretention cell: Plants are dead, diseased or problem and replace plants. vegetation dying Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Tree stakes/wires are present Remove tree stake/wires six months after planting. (which can kill the tree if not removed). Spot mulch if there are only random void areas. Replace whole mulch layer if Mulch is breaking down or necessary. Remove the has floated away. remaining much and replace _ _ with triple shredded hard wood mulch at a maximum depth of three inches. Determine the extent of the clogging - remove and replace either The bioretention cell: just the top layers or the entire soils and mulch media as needed. Dispose of Soils and/or mulch are the spoil in an appropriate off - clogged with sediment. site location. Use triple shredded hard wood mulch at a maximum depth of three inches. Search for the source of the sediment and remedy the roblem if possible. Dolomitic.lime shall be applied An annual soil test shows that as recommended per, the soil OH has dropped or heavy test and toxic soils shall be metals have accumulated in removed, disposed of properly the soil media. and replaced with new planting media. 'The underdrain system Clogging has occurred. Wash out the underdrain if applicable) system. The drop inlet Clogging has Clean out the drop inlet. _ Dispose of the sediment off - occurred. site. The drop inlet is damaged The receiving water Erosion or Contact the NC Division of Repair or replace the drop . other signs of damage have Water Quality 491 Oversight inlet. occurred at the outlet. Unit at 919-733-1786. tlauc 1=� of 13 Miva:iel F. FAFIey, irn-lernor ,. R%.1�T;I%iELV William G.1'.r-;: Jr., sc-cmary North Carolina Department of Enviroamcmt ,.Li1 Nahum,: kesourers MAY 0 7 2008 May 6, 2008 T.R Bowers Manager of Capital Projects Facilities Planning and Construction Medical Center Boulevard Winston Salem, North Carolina 27157 Subject: Phase 11 Post -Construction Stormwater Permit Application Return Primary Care if Mocksville Project Davie County Dear Mr. Bowers: Cbtets li. Sullins, Director Divis::c: of V'ater Quality RECE!'JE0 t (:Iacr. P„ MAY 2 9 2008 � yJ},zytan-Salem Region., office The Division of Water Quality received your Stormwater Management Permit Application for the subject project on May 5, 2008. After a preliminary review the submittal was found to be incomplete, and we are returning the submittal application and application fee to you. The application is incomplete based on the following items: 1. Failure to provide original signatures on the application. 2. Stromwater Controls do not provide 85% removal of TSS. Multiple BMPs may be placed in series within the same drainage area to combine treatment capabilities. if multiple BMPs are placed in series, they can utilize the combined,voiume coatrol capabilities and increase combined removal efficiency. The volume control capabilities are additive, however, the pollutant removal rates are not. The overall efficiency (F.,) for a given pollutant (TSS, TN or TP) of multiple BMPs in series is computed as shown on Page 3-18 of the state's BMP Manual (at: http://h2o.enr.state.tic.us/sufbmp_forrns.htm). Please see checklist on our website to help check that your re -submittal includes all necessary items. It can be downloaded from http://h2o.enr.state.nc.us/su/documents/checklistrev-l.pdf. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. If you have any questions concerning this matter, please contact me at (919) 733-5083 x 545 or mike. randall@ncmail.net Sincerely, J / ,7 Micheal F. Randall DWQ Stormwater Permitting Unit cc: Mr. Mark N. Breen, P.E., Robinson -Sawyer, Inc. Winston Salem Regional Office SPU files 111111 Complete items 1, 2, and 3. Also complete Item 4 if Restricted Delivery is desired. ■ Print your name and address on the reverse so that we can return the card to you. ■ Attach this card to the back of the mailpiece, or on the front if space permits. 1. Article Addressed to: Mr. T.R. Bowers Facilities Planning & Construction WFUBMC Medical Center Boulevard + Winston-Salem, NC 27028 1 7Q1q '�2780.,.0 01 4221...Sl3 .'Rs i=orm,3$1t,15# r X: 0E14,,ax4: -,, Domestic Retu �s _3� A. Signature - Us , �% t P843 Agent X Add�see B. Received by Pririted Nama) C. Date Dellvry 1C0Z2�G�-� E' i D. Is delivery, address different from item 17 ❑ Yes u If YES, enter delivery address below:,�7 No 11 f r bra/11 lm4e -CA In %1fYlS - L& 3. S Ice Type � YCertifled Mall ❑�Ezpies��IVlall)�`-�'� ❑ Registered lj RBtum Ric Te pt for Merchandise ❑ Insured Mail ❑ C.O.D. 4. Restricted Delivery? (EKra Fee) ❑ Yes -f � f ! S 2 63a-I mb\/ m Receipt 102595-02445401 Mr. Bowers May 25, 2011 Page 4 of 4 Required Response Accordingly, you are directed to respond to this letter in writing within 30 calendar days of receipt of this Notice. Your response should be sent to this office at the letterhead address and include the following: 1. An annual summary of inspection and maintenance records, or a statement of why records cannot be provided as required by the permit. 2. A proposed maintenance and corrective action plan to bring the bioretention cell and filter strip back into compliance with the approved plans and permit conditions. Thank you for your attention to this matter. This Office is considering sending a recommendation for enforcement to the Director of the Division of Water Quality regarding these issues and any future/continued violations that may be encountered. This office requires that the violations, as detailed above, be abated immediately and properly resolved. Environmental damage and/or failure to secure proper authorizations have been documented on the subject tract as stated above. Your efforts to undertake activities to bring the subject site back into compliance is not an admission, rather it is an action that must be taken in order to begin to solve ongoing environmental issues. Pursuant to G.S. 143-215.6A, these violations and any future violations are subject to a civil penalty assessment of up to a maximum of $25,000.00 per day for each violation. Your above -mentioned response to this correspondence, the degree and extent of harm to the environment and the duration and gravity of the violation(s) will be considered in any civil penalty assessment process that may occur. Should'you have any questions regarding these matters, please contact Sue Homewood at this office at 336-771-4964 or sue.homewoodQnedenr.gov or myself at 336-771-5000. Sincerely, W. Corey Basinger Water Quality Regional Supervisor Winston Salem Regional Office cc: DWQ WSRO r1 r r �R"H� F liA Y t' ' r�' Sl i,. K S.S�SI �f �•' � � .�..i�. � I .}{ J.i ' 5, 1 t 1' y � YES, •. ! , .. 1 .. '.'1. l l ' � 1 4�-`;,y, ��ai.'S `y43n�h�y4r if jJVFi • .y N': .. , ...:��N. c.�.!? . a,,: •�}..-=/.r��.:.�,i..,.. r•.� 1• 1.15' { !, iT•f S 1:ffS : S +r ti " �lY .IS t .1.. Kcw.}l,r: ,Jek-.s - ,.1$... .:� th`.. i .r�,-(�.,`-� ly .'-•��" 4 4i. 'J 1 •pJ4� � � '.. 'Y.'i�1-1�'��d.'• 'JIJ'Mt. 1l -y�1 ,��: •s 'fir ,�+. I � I '�1w_ � 1 stir �11 .� y�� ' • '1 I h.,i . �'_ fig. • _ 71r •.w' .:.Cites:. .-. �.-; . r Mr. Bowers May 25, 2011 Page 2 of 4 o As shown in the photo below, small outlet holes are present within the level spreader allowing for concentrated runoff and causing erosion into the filter strip. These holes were not approved on the plans. 3. Condition II.3 of Permit No. SW4080503 requires that "the pennittee shall at all time provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency." The following maintenance problems were noted during the inspection: o Side slopes of the bioretention cell have not been stabilized with adequate vegetation. 4 w ^,,- c"_ ,r«ZrH xF�54'Ile rc`-0 y ��cti ' I i`�'' �,y. 5��'k `� �Y ^s�h'Y,� WA -'-T%4-VA NC®ENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary May.25, 2011 CERTIFIED MAIL 7010 2780 0001 4221 5132 RETURN RECEIPT REQUESTED Mr. T. R. Bowers Wake forest University Baptist Medical Center Facilities Planning and Construction Medical Center Boulevard Winston-Salem NC 27028 Subject: Stormwater Permit No. SW4080503 Inspection Report and Notice of Violation 4NOV-2011-PC-0327 Primary Care of Mocksville Davie County Dear Mr. Bowers: On June 4, 2008 the Division of Water Quality (Division) issued a High Density Commercial Property Stormwater Permit for the proposed Primary Care of Mocksville in Mocksville, NC in Davie County. On May 19, 2011, Sue Homewood, Robert Patterson and Brian Lowther from this Division conducted a routine inspection of the approved Bioretention Cells. The following items were noted during their inspection and a subsequent file review-. l . Condition 11.5 of Permit No. SW4080503 requires that the "permittee shall submit to the Division an annual summary report of the maintenance and inspection records for each BMP". An engineer's certification for the approved bioretention cell was received on October 14, 2009 therefore an annual report was due to the Division on November 1, 2010. 2. Condition II.6 of Permit No. SW4080503 requires that "the facilities shall be constructed as shown on the approved plans." The site inspection determined the following discrepancies. o The vegetated filter strip does not appear to be the approved length. North Carolina Division of Water Quality, Winston-Salem Regional Office Location: 585 Waughtown St Winston-Salem, North Carolina 271C7 Phone: 336.771.50001 FAX 336-771.4630 \ Customer Service:1-877.523-6748 Internet: www.ncwaterquality.org An Equal Opportunity i Affirmative Action Employer NorthCarolina Natumllry