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Home My WebLink About20111120 Ver 1_More Info Received_20120103Dennison, Laurie From Freeman Hunter [HFreeman @withersravenel com] Sent Tuesday January 03 2012 3 00 PM To Dennison Laurie Subject RE DWQ 11 1120 Eagle Rock Concrete (Wake) Attachments EagleRock -0 &M pdf Laurie — Happy New Year I sent 2 additional copies today but then realized that I didn t attach the draft O &M Manual Here is a copy of the agreement which we will finalize with the Town as part of the certification process Let me know if you have any questions Hunter From Dennison, Laurie jmailto laune j dennison(.ancdenr govt Sent Friday, December 23, 2011 12 44 PM To Freeman Hunter Subject DWQ 11 1120 Eagle Rock Concrete (Wake) Importance High Hunter— Would you please send DWQ two (2) more application sets for the above reference project Only one (1) set was sent and DWQ needs three (3) total Thank you Laurie Laurie Dennison Administrative Assistant (919) 807 6303 Wetlands Buffers and Stormwater Compliance and Permitting Unit (WEBSCAPE) NCDENR /Division of Water Quality Wetlands and Stormwater Branch Mailing address 1650 Mail Service Center Raleigh NC 27699 1650 Physical location 512 N Salisbury St 9th FL Archdale Bldg Raleigh NC 27604 1170 Fax line (919) 807 6494 Website www ncwaterguality org Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties unless the content is exempt by stature or other regulation After recording mail to Town Clerk, Town of Garner P O Box 446 Garner NC 27529 NORTH CAROLINA WAKE COUNTY AGREEMENT This Agreement, made this day of 20T by and between the Town of Garner (hereinafter also simply Town ) and (hereinafter' Developer ), WHEREAS the Developer proposes to construct or has constructed, certain stormwater facilities at -1 _(Dg c-2=, Garner NC and NOW THEREFORE, in consideration of the Town s approval of the Developer s proposed stormwater controls and issuance of a development permit issuance of a stormwater permit, the Developer agrees to undertake actions, to engage in the maintenance, rehabilitation and repair of certain specified best management practices ( BMP s ) as set forth on Exhibit A attached hereto and incorporated herem in connection with stormwater control at the foregoing location which agreement is binding on the Developer s heirs, administrators successors and assigns This the day of , 20, TOWN OF GARN (Developer) TOWN S NOTARIAL ACKNOWLEDGMENT STATE OF NORTH CAROLINA WAKE COUNTY I, a Notary Public of the County and State aforesaid, certify that personally came before me this day and acknowledged that she is the (Asst ) Town Clerk of the Town of Garner, North Carolina, a North Carolina municipal corporation and that by authority duly given and as the act of the corporation, the foregoing instrument was signed in its name by its Town Manager sealed with its corporate seal, and attested by her as its (Asst ) Town Clerk Witness my hand and official seal, this day of 20 Notary Public My Commission Expires INDIVIDUAL ACKNOWLEDGMENT NORTH CAROLINA WAKE COUNTY I the undersigned, a Notary Public in and for said County and State, do hereby certify that personally appeared before me this day duly affixed his/her signature to the foregoing instrument for the purposes and intents therein expressed Witness my hand and official seal this the _ day of , 20 Notary Public My Commission Expires PARTNERSHIP ACKNOWLEDGEMENT NORTH CAROLINA WAKE COUNTY I the undersigned a Notary Public in and for said County and State do hereby certify that , a General Partner of a North Carolina General/Limited partnership, personally appeared before me this day duly affixed his/her signature to the foregoing instrument as the act of the partnership for the purposes and intents therein expressed Witness my hand and official seal this the _ day of 20� Notary Public My Commission Expires CORPORATE ACKNOWLEDGMENT t STATE OF NORTH CAROLINA WAKE COUNTY I, a Notary Public of the County and State aforesaid, certify that personally came before me tlus day and acknowledged that he /she is Secretary of a North Carolina corporation, and that by authority duly given and as the act of the corporation, the foregoing instrument was signed in its name by its President, sealed with its corporate seal and attested by him/her as its Secretary Witness my hand and official seal, this day of Notary Public My Commission Lxpires LLC ACKNOWLEDGEMENT — SINGLE LLC STATE OF NORTH CAROLINA WAKE COUNTY I a Notary Public of the County and State aforesaid, certify that personally came before me this day and acknowledged that he /she is a Managing Member of a North Carolina Limited Liability Corporation, and that by authority duly given and as the act of the corporation, the foregoing instrument was signed as the act of said LLC Witness my hand and official seal this day of Notary Public My Commission Expires 20_ LLC ACKNOWLEDGEMENT — MULTIPLE LEVELS OF LLC s STATE OP NORTH CAROLINA WAKE COUNTY a Notary Public of the County and State aforesaid certify that personally carne before me this day and acknowledged that he/she is a Managing Member of a North Carolina Limited Liability Corporation, which is a Managing member of , A North Carolina Limited Corporation, and that by authority duly given and as the act of the corporation the foregoing instrument was signed as the act of said LLC Witness my hand and official seal this day of 20^ Notary Public My Commission Expires Project Eagle Rock Concrete BEST MANAGEMENT PRACTICES Garner NC Property Owner/Responsible Party Eagle Rock Address 8310 Bandford Wav Raleigh, NC 27614 Phone Number (919) 819 1100 Prepared By Withers & Ravcnel Date 11/15/11 The maintenance of any Best Management Practice (BMP) installed to achieve nitrogen loading and /or flow attenuating requirements for a development shall be the responsibility of the property owner or other identified responsible party In the case of residential or commercial subdivisions Home Owners Associations or Merchants Associations must be established in order to identify the responsible party This manual establishes general procedures for maintenance and operation of the allowed BMP types in accordance with the Town of Garner Stormwater Program for Nitrogen Control It is important to note that only general maintenance tasks are identified here All devices shall be maintained to original design standards This agreement shall be signed and notarized by the responsible party to perform the tasks specified in the plan including inspections operation and any needed maintenance activities Background Identify the types of BMPs located on the site and give a brief description on their design If you need additional space please attach separate pages to this document Stormwater Wetland +/ 4500 sf normal pool area @ 269 00, +/ 7200 sf temp pool area R, 270 00 4 x 4 ID Riser with main crest (a, 27190, 2 weir (o 27100, 2 onfice (a), 270 00, 15 onfice (normal pool control) (a), 269 00 Forebay located at inlet from storm system, +/ 720 sf Wetland is located in back corner (south eastern corner) of site Pipe Storage System — 100 LF 48 -lpe na 0 5% Downstream of settling weirs Weir wall to control flow at outlet 3 onfice a 265 00 (invert of system) overflow weir @ 27200 A Riparian Buffers — Extra land in addition to required riparian buffers that is used for nitrogen reduction should be left in an undisturbed condition Only maintenance activities allowed by the buffer rules would be allowed Any level spreaders used to diffuse flow into the buffer should be maintained as required in section Il B 2 B Vegetated Filter Stnps with Level Spreaders — Maintenance requirements are as follows 1 At least once annually remove deposited sediment especially from the upstream edge to maintain original contours and grading 2 Repair channels that form and regrade the filter strip to ensure that the runoff flows evenly in a thin sheet over the filter strip 3 Repair level spreader whose disrepair can cause the formation of channels in the filter strip 4 Reseed and regrade the filter strip to maintain a dense growth of vegetation especially if the strip has been used for sediment control 5 Grassed filter strips shall be mowed at least twice annually to a minimum height of six inches C Open Channel Practices — Maintenance shall be performed as follows 1 At least once annually remove excess sediment especially from the upstream edge to maintain original contours and grading 2 At least once annually repair any erosion and regrade the swale to ensure that the runoff flows evenly in a thin sheet through the swale 3 At least once annually inspect vegetation and revegetate the swale to maintain a dense growth of vegetation 4 Grassed swales shall be mowed at least twice annually to a minimum height of six inches D Bioretention — Ongoing monitoring and maintenance is vital to the overall success of bioretention areas Annual maintenance will be required for plant material mulch layer and soil layer A maintenance schedule should include all of the main considerations discussed below 1 Soil and mulch layer maintenance will most likely be limited to correcting areas of erosion 2 Replacement of mulch layers may be necessary every two or three years 3 Mulch should be replaced in the spnng 4 When the mulch layer is replaced the previous layer should be removed first 5 Plant material upkeep will include addressing problems associated with disease or insect infestations replacing dead plant material, and any necessary pruning ' whenever it accumulates or at least twice annually Wetlands should be inspected annually after a rain even to ensure that the basin is operating as designed At a minimum items that should be included in the inspection are I Clogging of the outlet or too rapid a release 2 Erosion on the banks 3 Erosion at the inlet and outlet 4 Sediment accumulation and the need for removal 5 Condition of the emergency spillway 6 Woody vegetation in the embankment F Sand Filters — Maintenance requirements are as follows 1 Sand filters should be inspected at least once per month and after any large rain event to check for damages 2 Sediment should be cleaned out of the forebay /sedimentation chamber when it accumulates to a depth of more than six (6) inches 3 Any structures (outlets flow diversions embankments etc ) should be checked at least annually for damage or degradation 4 Once a year, the sand media will be skimmed 5 Once a year the sand filter media will be replaced whenever it fails to function properly after vacuuming 6 The sand filter will be inspected quarterly and within 24 hours after every storm event greater than 10 inches G Wet Retention Ponds — Maintenance requirements are as follows 1 Debris and litter control checks for inlet outlet and onfice obstruction after every storm producing runoff 2 Provisions for routine vegetation management/mowmg and a schedule for these activities 3 Checks every 6 months or more frequently for a Sediment buildup and the need for removal b Erosion along the bank and the need for reseeding or stabilization and if reseeding is necessary a reseeding schedule c Erosion at the inlet and outlet and methods of stabilization d Seepage through the dam e Operation of any valves or mechanical components H Proprietary BMPs — Maintenance requirements will be based on the approved plans per manufacturer subject to DWQ approval I Other BMPs — Maintenance requirements will be based on the approved plans subject to DWQ approval repairs to the property owner /responsible party The property owner /responsible party will have 90 days to correct all deficiencies and make all repairs to the satisfaction of the Town Engineer Failure to satisfactorily complete the repairs within the 90 days will cause the BMP to be declared a nuisance as provided for in Section 6 17 of the Garner Town Code Abatement of the nuisance will proceed as provided for in Chapter 6 Article II of the Garner Town Code