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HomeMy WebLinkAboutSW8120218_CURRENT PERMIT_20210916STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO SW8120zIy DOC TYPE It] CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 2021 pgjtD YYYYMMDD I ROY COOPER Governor ELIZABETH S BISER Secretary Dim mr NORTH CAROUNA Enrtromnentd Quanty September 16 2021 Broad and Gales Creek Community Association Atm Patrick A Bello, President 3010 Hwy 24 Newport, NC 28570 Subject Permit Renewal State Stormwater Management Permit No SW8 120218 Broad and Gales Creek Fire Department Addition Carteret County Dear Mr Bello Effective August 1, 2013 the State Stormwater program has been transferred from the Division of Water Quality (DWQ) to the Division of Energy, Mineral and Land Resources (DEMLR) All previous references to DWQ will remam in older stormwater permits issued pnor to August 1, 2013 until they are modified Please note that this permit will now reference DEMLR as the Division responsible for issuance of the permit The Wilmington Regional Office received a complete 8 year Stormwater Management Permit Renewal Application for the subject project on September 15, 2021 The Division is hereby notifying you that permit SW8 120218 has been renewed on September 16, 2021, and shall be effective until June 26, 2028 For your records, please find enclosed a renewed updated, and re -issued permit and a copy of the renewal application As requested, a copy of the current operation and maintenance agreement is enclosed Please keep this permit on file at all times Please note that the renewed, updated, and re -issued permit does not impose new or different terms, it merely restates some of the previous terms to provide you with a better understanding of your obligations under the permit The renewal and reissuance of this stormwater permit does not imply that the site is currently in compliance with the terms and conditions of this state stormwater permit The plans originally approved on June 26, 2012 and most recently modified on November 15 2012 will remain in full force and effect in accordance with the regulations set forth in Title 15A NCAC 2H 1000 This permit is subject to the conditions and limitations as specified therein Please pay special attention to the conditions listed in this permit regarding the Operation and Maintenance of the BMP(s), recordation of deed restrictions, procedures for changes of ownership, transferring the permit, and renewing the permit Failure to establish an adequate system for operation and maintenance of the stormwater management system, to record deed restrictions, to transfer the permit, or to renew the permit, will result in future compliance problems If any parts, requirements, or limitations contained in this permit are unacceptable, you have the tight to request an adjudicatory hearing by filing a written petition with the Office of Administrative Hearings (OAH) The written petition must conform to Chapter 150B of the North Carolina General Statutes and must be filed with the OAH within thirty (30) days of receipt of this permit You should contact the OAR with all questions regarding the filing fee (if a filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via telephone at 919-431-3000 or visit their website at www NCOAH com Unless such demands are made this permit shall be final and binding If you have any questions, need additional copies of the permit or approved plans please contact Ashley Smith in the Wilmington Regional Office at (910) 796-7215 or ashleym smith@ncdenr gov Sincerely CRC WQQ � Brian Wrenn Director Division of Energy Mineral and Land Resources Q�� North Carolina Department of Enwonmental Quality I Dmsion of Energy Mineral and Land Resources 512 North Salisbury Street 1 1612 Mall Servlce Center I Raleigh North Carolina 27699 1612 rioam own.va 9197079200 State Stormwater Permit No SW8 120218 Page 2 of 2 Enclosures DES/ams cc Attachment C — Permitting History Renewal Application Documents \\\Stormwater\Permits & Projects\2012\120218 HD\2021 09 permit 120218 NCDEQ-DEN ER Wilmington Regional Office ®ER O% North Carolina Department of Environmental Quality I Dwision of Energy Mineral and Land Resources 512 North Salisbury Street 1 1612 Mail Service Center I Raleigh North Carolina 27699-1612 •�� /'� 9197079200 State Stormwater Management Systems Permit No SW8 120218 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY COMMERCIAL DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143 General Statutes of North Carolina as amended and other applicable Laws Rules and Regulations PERMISSION IS HEREBY GRANTED TO Broad & Gales Creek Community Association Broad & Gales Creek Fire Department Addition 3010 Hwy 24 Newport Carteret County FOR THE construction operation and maintenance of one (1) alternative design infiltration basin in compliance with the provisions of the 2008 version of 15A NCAC 2H 1000 (hereafter referred to as the stormwater rules ) and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Energy, Mineral and Land Resources (the Division or "DEMLR ) and considered an enforceable part of this permit This permit shall be effective from the date of issuance until June 26 2028 and shall be subject to the following specified conditions and limitations I DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data This stormwater system has been approved for the management of stormwater runoff as described in Section 1 7 of this permit The infiltration basin labeled as Basin 1 has been designed to treat the runoff from 44 693 square feet of built -upon area The tract will be limited to the amount of built -upon area indicated in Section 17 of this permit and as shown on the approved plans All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements The final plats for the project will be recorded showing all such required easements in accordance with the approved plans The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system The project must provide a 50 wide vegetated buffer adjacent surface waters measured horizontally from and perpendicular to the normal pool of impounded structures the top of bank of both sides of streams and rivers, and the mean high water line of tidal waters as shown on the approved plans Page 1 of 5 State Stormwater Management Systems Permit No SW8 120218 7 The following design criteria have been permitted for the infiltration basin and must be provided and maintained at design condition a Drainage Area acres 1 56 Onsite ft2 67 868 Offsite, ft2 0 b Total Impervious Surfaces ft2 44 693 Buildings ft2 6193 Parking ft2 29 369 Sidewalks ft2 800 Existing ft2 8 331 c Design Storm inches 6 85 (10 yr 24 hr) d Basin Depth, feet 20 e Bottom Elevation FMSL 24 f Bottom Surface Area ft2 2 240 g Emergency Overflow Elevation FMSL 260 h Provided Storage Volume ft3 7 401 i Volume of 10 yr — 24 hour storm cf 24 971 t Volume infiltrated in 24 hrs @9 in/hr cf 40 208 k Type of Soil Group A I Expected Infiltration Rate in/hr 1795 m Seasonal High Water Table FMSL 205 n Time to Draw Down hours 22 o Receiving Stream/River Basin Broad Creek / WOK03 p Stream Index Number 20-36-7 q Classification of Water Body 'SA HQW Per section 1008 (h) of the stormwater rules this alternative design basin provides equal or better protection because it infiltrates a 10-year 24-hour storm without discharging, using an infiltration rate of one-half of the expected infiltration rate provided in the soils report The infiltration basin is designed in accordance with Option 4 of Section 16 3 9 of the BMP manual therefore no bypass no vegetated filter strip and no additional storage volume are required II SCHEDULE OF COMPLIANCE The stormwater management system shall be constructed in its entirety vegetated and operational for its intended use prior to the construction of any built -upon surface 2 During construction erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately 3 The facilities shall be constructed operated and maintained in accordance with the provisions of this permit the approved plans and specifications and the supporting documents attached to this permit and on file with the Division 4 If the stormwater system was used as an Erosion Control device it must be restored to design condition prior to operation as a stormwater treatment device and prior to occupancy of the facility 5 Prior to transfer of the permit a file review and site inspection will be conducted by Division personnel to ensure the permit conditions have been met and that the protect and the on -site stormwater system complies with the permit conditions Any items not in compliance must be repaired replaced restored or resolved prior to the transfer Records of maintenance activities performed to date may be requested Page 2 of 5 State Stormwater Management Systems Permit No SW8 120218 6 The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at the design condition The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including but not limited to a Semiannual scheduled inspections (every 6 months) b Sediment removal c Mowing and revegetation of slopes and the vegetated filter d Immediate repair of eroded areas e Maintenance of all slopes in accordance with approved plans and specifications f Debris removal and unclogging of bypass structure infiltration media flow spreader catch basins piping and vegetated filter g A clear access path to the bypass structure must be available at all times 7 Records of maintenance activities must be kept for each permitted BMP The reports will indicate the date activity name of person performing the work and what actions were taken 8 No person or entity including the permittee shall alter any component shown in the approved plans and specifications Prior to the construction of any modification to the approved plans the permittee shall submit to the Director and shall have received approval for modified plans specifications and calculations including but not limited to those listed below For changes to the project or SCM that impact the certifications a new or updated certification(s), as applicable will be required and a copy must be submitted to the appropriate DEQ regional office upon completion of the modification a Any modification to the approved plans and specifications regardless of size including the SCM(s) BUA details etc b Redesign or addition to the approved amount of BUA or to the drainage area c Further development, subdivision acquisition lease or sale of any all or part of the protect and/or property area as reported in the approved plans and specifications d Altering modifying removing relocating redirecting, regrading or resizing of any component of the approved SCM(s) the stormwater collection system and/or vegetative conveyance shown on the approved plan e The construction of any allocated future BUA f The construction of any permeable pavement #57 stone area public trails or landscaping material to be considered a permeable surface that were not included in the approved plans and specifications g Other modifications as determined by the Director 9 Upon completion of construction prior to issuance of a Certificate of Occupancy and prior to operation of this permitted facility a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit the approved plans and specifications and other supporting documentation Any deviations from the approved plans and specifications must be noted on the Certification A modification may be required for those deviations 10 Access to the stormwater facilities shall be maintained via appropriate recorded access and drainage easements at all times 11 The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit Within the time frame specified in the notice the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made III GENERAL CONDITIONS Any individual or entity found to be in noncompliance with the provisions of a stormwater management permit or the requirements of the stormwater rules is subject to enforcement procedures as set forth in NCGS 143 Article 21 Page 3 of 5 State Stormwater Management Systems Permit No SW8 120218 2 The issuance of this permit does not preclude the permittee from complying with and obtaining any other permits or approvals that are required for this development to take place as required by any statutes rules regulations or ordinances which may be imposed by any other Local State or Federal government agency having jurisdiction Any activities undertaken at this site that cause a water quality violation or undertaken prior to receipt of the necessary permits or approvals to do so are considered violations of NCGS 143-215 1 and subject to enforcement procedures pursuant to NCGS 143-215 6 3 If the facilities fail to perform satisfactorily the permittee shall take immediate corrective actions This includes actions required by this Division and the stormwater rules such as the construction of additional or replacement on -site stormwater systems These additional or replacement measures shall receive a permit from the Division prior to construction 4 Permit Transfer This permit is not transferable to any person or entity except after notice to and approval by the Director The permittee shall submit a completed and signed Permit Transfer Application Form' (available on the Division website) accompanied by the required fee and supporting documentation as listed on the form to the Division at least 60 days prior to any one or more of the following events a The sale or conveyance of the project area in whole or in part except in the case of an individual lot sale that is made subject to the recorded deed restrictions and protective covenants b Dissolution of the partnership corporate or LLC entity subject to NCGS 55-14-05 or NCGS 57D-6-07 and 08 c Bankruptcy d Foreclosure subject to the requirements of Session Law 2013-121 Current Permittee Name or Address Changes The permittee shall submit a completed Permit Information Update Application Form (available on the Division website) to the Division within 30 days to making any one or more of the following changes a A name change of the current permittee b A name change of the project c A mailing address change of the permittee 6 The permittee is responsible for compliance with all terms and conditions of this permit until the Division approves the transfer request Neither the sale of the project in whole or in part nor the conveyance of common area to a third party constitutes an approved transfer of the permit 7 The permittee grants Division Staff permission to enter the property during normal business hours to inspect all components of the permitted project 8 The permit issued shall continue in force and effect until the permittee files a request with the Division for a permit modification transfer renewal or rescission however these actions do not stay any permit conditions 9 Approved plans application documents supplements calculations operation and maintenance agreement and specifications for this project are incorporated by reference and are enforceable parts of the permit A copy of this permit application supplements operation and maintenance agreement and approved plans and specifications shall be maintained on file by the permittee 10 Unless specified elsewhere permanent seeding requirements for the on -site stormwater system must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual 11 The issuance of this permit does not prohibit the Director from reopening and modifying the permit revoking and reissuing the permit or terminating the permit for cause as allowed by the laws rules and regulations contained in Title 15A NCAC 2H 1000 and NCGS 143-215 1 et al 12 A permit renewal request must be submitted at least 180 days prior to the expiration date of this permit The renewal request must include the appropriate application documentation and the processing fee as outlined in Title 15A NCAC 02H 1045(3) Page 4 of 5 State Stormwater Management Systems Permit No SW8 120218 Permit renewed updated and reissued this the 16th day of September 2021 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION jJ—,, Briannreen 6� irector Division of Energy Mineral and Land Resources By Authority of the Environmental Management Commission Page 5 of 5 Attachment C Permitting History Broad & Gales Creek Fire Department Addition Permit No SW8 120218 Approval Date permit Action BQK3 Version Description of the Changes 6/26/2012 Original Approval 10 11/15/2012 Modification 1 1 Removal of one of the previously permitted infiltration basins Minor changes to the design of the remaining infiltration basin 9/16/2021 Renewal 20 Permit Number SW 1303 V� (to be piovtdcd by DWQ) Drainage Area Number Infiltration Basin Operation and Maintenance Agreement I will keep a maintenance record on this BMP This maintenance record will be kept in a login a known set location Any deficient BMP elements 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 maintenance procedures — The drainage area will be carefully managed to reduce the sediment load to the infiltration basin — Immediately after the infiltration basin is established, the vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks) — No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the vegetation — The vegetation in and around the basin will be maintained at a height of approximately six inches After the infiltration basin is established, it will be inspected once a quarter and within 24 hours after every storm event greater than 10 inches (or 15 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 BMP element Potential problem How I will remediate the problem The entire BMP Trash/debris is present Remove the trash/debris The perimeter of the Areas of bare soil and/or Regrade the sod if necessary to infiltration basin 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 application The inlet device pipe or The pipe is clogged (if Unclog the pipe Dispose of the 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 nprap to avoid future problems with erosion EGENE NOV 14 2012 Form SW401 Infiltration Basin O&M Rev 3 BYPage I of 3 BMP element Potential problem How 1 will remediate the problem The forebay Sediment has accumulated Search for the source of the and reduced the depth to 75% sediment and remedy the problem if of the original design depth possible Remove the sedinent and dispose of it in a location where it will not cause impacts to streams or the BMP Erosion has occurred or Provide additional erosion riprap is displaced protection such as reinforced turf matting or riprap if needed to prevent future erosion problems The main treatment area The embankment The outlet device Weeds are present A visible layer of sediment has accumulated Remove the weeds preferably by hand If pesticides are used wipe them on the plants rather than Search for the source of the sediment and remedy the problem if possible Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP Replace any media that was removed in the process Revegetate disturbed areas Water is standing more than Replace the top few inches of filter 5 days after a s I media and see if this corrects the standing water problem If so revegetate immediately If not consult an appropriate professional for a more extensive repair Weeds and noxious plants are Remove the plants by hand or by growing in the main wiping them with pesticide (do not treatment area spray) Shrubs or trees have started to grow on the embankment An annual inspection by an appropriate professional shows that the embankment needs repair Clogging has occurred The outlet device is Remove shrubs or trees repairs Clean out the outlet device Dispose of the sediment off -site Repair or replace the outlet device 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 Infiltration Basin O&M Rev 3 ECEIV E NOV 14 2012 By_P e2of3 Permit Number (to be piowdcd by UWQ) 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 Broad & Gales Creek Fire Department Addition BMP drainage area numbet Print name It�4LIaeF Title Pr P-ni- Address 3010 Highway 24, Newport, NC dW10 Phone use- A69,- Signature // Date _dDVe ✓►ibr r Note The legally responsible party should not be a homeowners association unless more than 50% of the lots have been bold and a resident of the subdivision has been named the president i co , a Notary Public for the State of otantyy of// (� , do hereby certify that 9cJ �9, e, a personally appeared before me this 0 �� Uu7 day of /1/0 dem zap— and acknowledge the due execution of the forgoing infiltration basin maintenance requirements Witness my hand and official seal, SEAL My commission expires JECEI `V i NOV 14 2012 aY _ ----_ Form SW401 Infiltration Basin O&M Rev 3 Page 3 of 3 Permit Number 5W 8 D Z O Z i 8 (to be provided by DWQ) Drainage Area Number 22 Infiltration Basin Operation and Maintenance Agreement I will keep a maintenance record on tlus BMP This maintenance record will be kept in a log in a known set location Any deficient BMP elements 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 maintenance procedures — The drainage area will be carefully managed to reduce the sediment load to the infiltration basin — Immediately after the infiltration basin is established, the vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks) — No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the vegetation — The vegetation in and around the basin will be maintained at a height of approximately six inches After the infiltration basin is established, it will be inspected once a quarter and within 24 hours after every storm event greater than 10 inches (or 15 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 BMP element Potential problem. How I will remediate the problem The entire BMP Trash/debns is present Remove the trash debns The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to infiltration balm erosive gullies have formed remove the gully and then plant a ground cover and water until it is established Provide time and a one-time fertilizer application The inlet device pipe or The pipe is clogged (if Unclog the pipe Dispose of the Swale :, applicable) sediment off -site „ The pipe is cracked or Replace the pipe otherwise damaged (if applicable) Erosion is occumng 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 nprap to avoid future problems with erosion ECEIVE Form S W401 Infiltration Basin O&M Rev 3 ty age 1 of 3 JUN 0 7 2012 BY _ Sw81ZOZIF BMP element Potential problein. How I will remediate the problem The forebay Sediment has accumulated Search for the source of the and reduced the depth to 75% sediment and remedy the problem if of the original design depth possible Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP Erosion has occurred or Provide additional erosion nprap is displaced protection such as reinforced turf matting or nprap if needed to prevent future erosion problems Weeds are present Remove the weeds preferably by hand if pesticides are used wipe them on the plants rather than spraying The main treatment area A visible layer of sediment Search for the source of the has accumulated sediment and remedy the problem if possible Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP Replace any media that was removed in the process Revegetate disturbed areas immediate) Water is standing more than Replace the top few inches of filter 5 days after a storm event media and see if this corrects the standing water problem If so revegetate immediately If not, consult an appropriate professional for a more extensive repair Weeds and noxious plants are Remove the plants by hand or by growing in the main wiping them with pesticide (do not treatment area spray) The embankment Shrubs or trees have started Remove shrubs or trees to grow on the embankment immediate) An annual inspection by an Make all needed repairs appropriate professional shows that the embankment needs repair The outlet device Clogging has occurred Clean out the outlet device Dispose of the sediment off -site The outlet device is damaged Repair or replace the outlet device The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quabty 401 Oversight Umt at 919- outlet 733-1786 IQECEIVE Form SW40I-infiltration Basin O&M -Rev 3! e 2 of 3 bV PermitNumber 5W $ (Z O 2. I S (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 1 agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party Project nameBroad & Gales Creek Fire Department Addition BMP drainage area number Print name Wallace A Guthrie, Sr W/44 Title VsetPresident Address 3010 Highway 24, Newport, NC Phone Signature Date 6 - Li - 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 a Notary Public for the State of bf)d('Av& VICp, County of C-O'- Q VCJ— , do hereby certify that �-4 ``qcp- 0-�O fi S r- personally appeared before me this _ and acknowledge the due execution of the requirements Witness my hand and official seal, SEAL My commission expires l Form SW401 Infiltration Basin O&M -Rev 3 ECEIVE JUN 0 7 2022 dv — Page 3 of 3 V'� , 191 ' It Permit Number : ld (to be provided by DWO Drainage Area Number Infiltration Basin 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 elements noted in the inspection will be corrected, repaired or replaced immediately These deficiencies can affect the integrity of structures safety of the pubhc, and the removal efficiency of the BMP Important maintenance procedures — The drainage area will be carefully managed to reduce the sediment load to the infiltration basin — Immediately after the infiltration basin is established the vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks) — No portion of the infiltration basin will be fertilized after the uutial fertilization that is required to establish the vegetation — The vegetation in and around the basin will be maintained at a height of approximately six inches After the infiltration basin is estabhshed, it will be inspected once a quarter and within 24 hours after every storm event greater than 10 inches (or 15 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 BMP element- Potential problem. How I will remedrate the problem The entire BMP Trash/debns is present Remove the trash/debris The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to infiltration basin erosive gullies have formed remove the gully and then plant a ground cover and water until it is established Provide hme and a one-time fertilizer applicabon The inlet device pipe or The pipe is clogged (if Unclog the pipe Dispose of the 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 Form S W401 Infiltration Basin O&M Rev 3 �CEI t16 E LB7Y V D FEB 2 N 0012 Rlof`3 $ �012 Sw8 11OZ(O BMP element- Potential problem How I will remediate the problem The forebay Sediment has accumulated Search for the source of the and reduced the depth to 75% sediment and remedy the problem if of the original design depth possible Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP Erosion has occurred or Provide additional erosion nprap is displaced protection such as reinforced turf matting or nprap if needed to prevent future erosion problems Weeds are present Remove the weeds, preferably by hand If pesticides are used wipe them on the plants rather than spraying The main treatment area A visible layer of sediment Search for the source of the has accumulated sediment and remedy the problem if possible Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP Replace any media that was removed in the process Revegetate disturbed areas immediate) Water is standing more than Replace the top few inches of filter 5 days after a storm event media and see if this corrects the standing water problem If so revegetate immediately If not consult an appropriate professional for a more extensive repair Weeds and noxious plants are Remove the plants by hand or by growing in the main wiping them with pesticide (do not treatment area spray) The embankment Shrubs or trees have started Remove shrubs or trees to grow on the embankment immediate) An annual inspection by an Make all needed repairs appropriate professional shows that the embankment needs re au The outlet device Clogging has occurred Clean out the outlet device Dispo of the sediment off -site The outlet device is damaged Repair or replace the outlet de The receiving water Erosion or other signs of Contact the NC Division of er� damage have occurred at the outlet Quality 401 Oversight Umt� 19- 733-1786 Form SW401 Infiltration Basin O&M Rev 3 2 of 3 Permit Number :�-Vrg' t2,0219 (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 rEFd/ectmmme Broad & Gales Creek Fire Department Addition BMP drainage area number Print name ,/x ' 44? TNfi'/,E 5/� Title V IG6 )",:; I n a)fi Address 3010 Highway 24, Newport, NC Phone 28750 Signature Date /d — / G — / / 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, We b inga u--)O V rj , a Notary Public for the State of k)(9 yfil Co, VU I I ✓f Cl , County of C-d V f1,42 ,• -� , do hereby certify that P C r, personally appeared before me this day of kb Lie l,i l Lle- I,/' , and acknowledge the due execution of the T forgoing infiltration basin maintenance requirements Witness my hand and official seal, O'er 4&V,O+ ED SEAL My commission expires 000194-Ir as; 961 S- Form SW401 Infiltration Basin O&M -Rev 3 By �f B 181011 '3 11FM1 H 11S1- ONI V-' - —' -- - -- — -� I Date R elv d Fee Pad Permit Number � 505 — atJ l�2 o a 8" NC DEQ Division of Energy, Mineral and Land Resources STATE STORMWATER PERMIT RENEWAL APPLICATION FORM In accordance with 15A NCAC 2H 1045(3)the current permit holder shall renew their high density permit 180 days pnor to its expiration Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781) Section 60 (c) This application form is for permit renewals only A PROJECT INFORMATION 1 State Stormwater Permit Number SW8 120218 2 Project name Broad and Gales Creek Fire Department Addition 3 Pro,ect street address 3010 Hwy 24 City Newport County Carteret ZIP 28570 4 What if any changes have been made to the project as permitted? If the project has changed from the original approved plans please complete SWU-101 for a Ma/or Modification or Minor Modification Application form available at https //deg nc gov/about/dwisions/enerav- mineral-land-resources/energv-minera I-land-rules/stormwater-prop ram/post-construction B PERMITTEE INFORMATION If changes to the permittee or project name have been made please complete either the Permit Update form or the Permit Transfer form available at https //deg nc gov/about/divisions/energv-mineral-land- resources/energv-mineral-land-rules/stormwater-program/post-construction State Stormwater Permits do not automatically transfer with the sale of the property 1 Current Permit Holders Company Name/Organization Broad and Gales Creek Community Association 2 Signing Officials Name Patrick A Bello 3 Signing nrflc,a1 s Title president 4 Mailing Address 3010 Hwy 24 City Newport State NC ZIP 28570 5 Street Address 3010 Hwy 24 City Newport State NC ZIP 28570 6 Phone (252) 222-3700 Email tone bello(5cimall com ECEIVE AUG a 6 2021 Stormwater Permit Renewal Form Page 1 of 3 May 11 2018 C SUBMITTAL REQUIREMENTS Submit the application package to the appropriate DEMLR Regional Office (Coastal SA Waters) or DEMLR Central Office (Urbanizing Areas Ph 2 USMP Non -Coastal HQW/ORI) Only applications packages that include all required items listed below will be accepted and reviewed Initial each item below to indicate that the required information is provided in the application package PAB 1 A permit application processing fee of $505 00 payable to NCDEQ PAB 2 One original signed hard copy and one electronic copy of this completed form The signing official named on this application to represent the current permittee must meet one of the following a Corporation — a principle executive officer of at least the level of vice-president b Limited Liability Company (LLC) — a manager or company official as those terms are defined in G S 57D North Carolina Limited Liability Company Act c Public Entity — a principal executive officer ranking official or other duly authorized employee d Partnership or limited partnership — the general partner e Sole proorietor or f Letter of authorization signed by one of the signatories noted in a — e above authorizing the signature of another entity PAB 3 One hard copy and one electronic copy of recorded documents required by the original permit that have not yet been received by DEMLR including deed restrictions protective covenants condominium/planned community declaration and easements If the project has been built include documentation that the maximum BUA per lot or maximum total BUA has not been exceeded If the project has not been built include a signed agreement that the final recorded deed restrictions and protective covenants will be submitted at a later date PAB 4 O&M Agreements Please select one ❑ I have a copy of the current recorded O&M Agreement for all SCMs and I will continue to keep this on file with the permit or ® I do not have a copy of the current recorded O&M Agreement for all SCMs and am requesting a copy be sent to me I agree to keep this on file with the permit PAB 5 Designer Certifications Please select one ® A copy of the certifications) confirming that the project was built in accordance with the approved plans have been previously provided to the Division or ❑ A copy of the certification(s) confirming that the project was built in accordance with the approved plans are enclosed or ❑ The project has not yet been built 6 [IF APPLICABLE] If the project has been built one original hard copy and one electronic copy of a signed sealed and dated letter from a licensed professional stating that the SCMs have been inspected and that they have been built and maintained in accordance with the permit [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC) Provide one hard copy and one electronic copy of documentation from the NC Secretary of State or other official documentation which supports the titles and positions held by the persons listed in Section C 2 per 15A NCAC 2H 1043(3)(b) ECEIVE at- Stormwater Permit Renewal Application Form Page 2 of 3 May 11 2018 D PERMITTEE'S CERTIFICATION the person legally responsible for the permit certify that I have a copy of the Permit and O&M Agreement on site (or I will obtain a copy and it will be kept on site) that I am responsible for the performance of the maintenance procedures and the site has been and will be maintained according to the O&M Agreement and approved plans I agree to notify DEMLR of any problems with the SCMs or built -upon area and to submit the proper forms to modify or transfer the permit prior to any changes to the project SCMs or ownership All information provided on this permit renewal application is to the best of my knowledge corer ct and comple^te /� Signature Eel Date 3-0z NOTARIZATION a Notary Public for the State of ;:2 for tYi CG Nd /I ni a County ofAitl51c W do hereby certify that f /Z cic x -z cn,/U personally appeared before me this the FOYA day of T/J 20,,?L and acknowledge the due execution of the forgoing instrument Witness my hand and official seal (Notary Seal) Notary Signature My commission expires pier fi (i L Stormwater Permit Renewal Application Form Page 3 of 3 May 11 2018 Permit Nd/ k1F/���j`' (to be provided by DWOJ ��i STORMWATER MANAGEMENT PERMIT APPLICATION FORM NCDENR 401 CERTIFICATION APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form must be filled out printed and submrtted The Required Items Checklist (Part III) must be printed filled out and submitted along with all of the required information Contact Person Phone Number Date Drainage Area Number 114DESIGNIINFORMATION m Site Characteristics 625-8641 Drainage area F 67 66800 1hi Impervious area 1 4469300 ift2 Percent Impervious 6585 % Design rainfall depth 1 365 'in Peak Flow Calculations 1 yr 24 hr rainfall depth 1 365 i m 1 yr 24 hr Intensity i 577 in/hr Pre -development 1 yr 24 hr discharge 1 178 lft'/sec Post development 1 yr 24 hr discharge 1 529 ift3/sec Pre/Post 1 yr 24 hr peak Flow control 351 ft'/sec Storage Volume Non SA Waters Minimum design volume required (� f ft3 Design volume provided I ift' Storage Volume SAWaters 15 runoff volume F 545200-78' Pre -development 1 yr 24 hr runoff volume 1 5 973 00 W Post -development 1 yr 24 hr runoff volume I 13 267 00 W Minimum required volume 729400 ft3 Volume provided i 740100 i ft3 Soils Report Summary Soil type A Infiltration rate 1795 1 infhr SHWT elevation I 2050 I fmsl Basin Design Parameters Drawdown time t 100 'days Basin side slopes 1 300 I 1 Basin bottom elevation 1 2400 Ynnsl Storage elevation 1 2600 1 fmsl Storage Surface Area 1 5 307 00 lft Top elevation 1 2650 'fmsl Basin Bottom Dimensions Basin length _ r 19000 7ft Basin width I 4000 ift Bottom Surface Area P 224000 ;ft OK OK OK OK FCF-IVEII OCT 0 9 2012 BY_--- -- OF WAiFq 's Z� 0FESS/per /2-1 faQ' s� i SEAL i 032573 t L2 f A R Form SW401 Infittratwn Basin Rev 5 11 Apr2011 Pans I S 11 Design Summary Page 1 of 2 j Permit No (to be provided by DWD) Additional Information Maximum runoff to each inlet to the basin? ---1 00 lac in OK Length of vegetative filter for overflow I 000 1 It Filter Is too short must be > 30 it Distance to structure 1 000 Ifl Too close to structure must be minimum of 15 ft downgradlent Distance from surface waters I 160000 1It OK Distance from water supplywell(s) f 22500 1If OK Separation from Impervious soil layer ( N/A f fl OK Naturally occunng soil above shwt ( y Ift OK Bottom covered with 4 In of clean sand? i y {(Y or N) OK Proposed drainage easement provided? ( y i (Y or N) OK Capures all runoff at ultimate build -out? I y i (Y or N) OK Bypass provided for larger storms? I y i (Y or N) OK Pretreatment device provided Forebays_. I + JECEIVE OCT 0 9 2012 BY Form SW401 Infiltration Basin Rev 5 11 Ap2011 Pans I & 11 Design Summary Page 2 of 2 PermhNo 509 120-LI8 (to be provided by DWO) III REQUIRED ITEMS CHECKLIST - - I Please Indicate the page or plan sheet numbers where the supporting documentation can be found An incomplete submittal package will result in a request for additional Information This will delay final review and approval of the protect Initial in the space provided to Indicate the following design requirements have been met If the applicant has designated an agent the agent may initial below If a requirement has not been met, attach justification Pagel Plan Initials Sheet No -63&LL 2i C 'ti` 1 Plans (1 50 or larger) of the entire site shoving Design at ultimate build -out Off site drainage (if applicable) Delineated drainage basins (include Rational C coefficient per basin) Basin dimensions Pretreatment system High Flow bypass system Maintenance access Proposed drainage easement and public right of way (ROM Overflow device and Boundaries of drainage easement G-'F 2 Partial plan (1 = 30 or larger) and details for the infiltration basin showing Bypass structure Maintenance access Basin bottom dimensions Basin cross section with benchmark for sediment cleanout Flow distribution detail for inflow Vegetated filter and Pretreatment device Pb - C _ df 3 Section view of the infiltration basin (1 = 20 or larger) showing Pretreatment and treatment areas and Inlet and outlet structures A-44G 13 4 A table of elevations areas incremental volumes & accumulated volumes to venfy the volume provided Asa- Prs 399 43 5 A soils report that is based upon an actual field investigation Boll borings and infiltration tests The results of the soils report must be verified in the field by DWO by completing & submitting the soils investigation request form County soil maps are not an acceptable source of soils information L— 3 6 A construction sequence that shows how the mfillrabon basin will be protected from sediment until the entire drainage area is stabilized �£ cros p 7 The supporting calculations RES sr suWsri r"rnl8 A copy of the signed and notarized operation and maintenance (O&M) agreement 9 A copy of the deed restrictions (if required)RECEIVE JUN 2 2 I'll BY --- Form SW401 Infiltration Basin Rev 4 Page 1 of 1 Part III Required Items Checklist Page 1 of 1 " Permit NoStUB /20218 (to be provMed by DWO) �A ®`= O`�O� WAiFgO STORMWATER MANAGEMENT PERMIT APPLICATION FORM NCDENR 401 CERTIFICATION APPLICATION FORM `C INFILTRATION BASIN SUPPLEMENT 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 I-PROJECTINFORMATION Project Name Broad & Gales Creek Fire Department Addition i Contact Person Patty E Hilburn (Pabst & Hdbum PA) ' Phone Number '(919) 625-8641 , Date 6/20/2012 i Drainage Area Number 11 ' III -;DESIGN INFORMATION Site Characteristics Drainage area 1 60 029 00 l «z Impervious area 1 35 790 00 lflz Percent Impervious 5962 % Design rainfall depth 1 365 In Peak Flow Calculations 1 yr 24 hr rainfall depth 1 365 (in 1 yr 24 hr intensity 1 577 Im/hr Pre -development 1 yr 24 hr discharge 1 144 1fP/sec Post development 1 yr 24 hr discharge 1 415 Ift3/sec Pre/Post 1 yr 24 hr peak Flow control 271 ft3/sec Storage Volume Non SA Waters Minimum design volume required Design volume provided I Iry3 Storage Volume SA Waters 15 runoff volume ( _ 446 0 Jf13 Pre development 1 yr 24 hr runoff volume 1 4 943 00 Itt3 Post -development 1 yr 24 hr runoff volume 1 10 711 00 1ff3 Minimum required volume 576800 rya Volume provided 5880 Do Iry3 OK Soils Report Summary Sod type I ^JA Infiltration rate 1 1795 ,infhr SHWT elevation I 2050 lfmsl Basin Design Parameters Drawdown time 1 DO days OK Basin side slopes I 300 1 OK Basin bottom elevation 1 2400 I fmsl OK Storage elevation I 2600 ifmsl Storage Surface Area 1 441200 off' Top elevation 1 2650 Ifmsl Basin Bottom Dimensions E C E I E Basin length 909000 7ff V Basin width 3000 1ff �UN 2 2 2��2 Bottom Surface Area 1 1 611 00 1fh BY Form SW401 Infiltration Basin Rev 5 11 Apr2011 Parts I & n Design Summary Page 1 of 2 Permit No 5L j 8 12 0 219 (to be provided by DWO) Additional Information Maximum runoff to each Inlet to the basin?r 1 ac In OK Length of vegetative filter for overflow ( 000 eft Filter Is too shod must be > 30 ft Distance to structure 1 000 1ft Too close to structure must be minimum of 15 ft downgradlent Distance from surface waters 1160000 It OK Distance from water supply well(s) j 22500 eft OK Separation from Impervious soil layer N/A ft OK Naturally occuring soil above shwt I y ft OK Bottom covered with 4 In of clean sand? 1 y (Y or N) OK Proposed drainage easement provldecP ! y I(Y or N) OK Capures all runoff at ultimate build out? E, y I (Y or N) OK Bypass provided for larger storms? j y J(Y or N) OK Pretreatment device provided I Forebays EGEJVE JUN 2 2 2012 BY Form SW401 Infiltration Basin Rev 5 11Ap2011 Parts I & H Design Summary Page 2 of 2 Permit No S W B 1 ZO 218 (to be provded by DWO) ARI.wLL. �r F WRiFgOG �'+ STORMWATER MANAGEMENT PERMIT APPLICATION FORM NCDENR 401 CERTIFICATION APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form must be filled out printed and submitted The Required Items Checklist (Part W) must be printed filled out and submitted along with all of the required information Project Name Contact Person Phone Number Date Drainage Area Number Site Characteristics Drainage area 2010100 —Ift2 Impervious area F 401700 Ife Percent Impervious 1998 % Design rainfall depth ) 150 Im Peak Flow Calculations 1 yr 24 hr rainfall depth I 365 )m 1 yr 24 hr ntensity 1 577 {in/hr Pre -development 1 yr 24 hr discharge 1 035 1 ft3/sec Post -development 1 yr 24 hr discharge 1 039 Ift3/sec Pre/Post 1 yr 24 hr peak Flow control 004 ft3/sec Storage Volume Non SA Waters Minimum design volume required F- ft3 Design volume provided 4 ift3 Storage Volume SAWaters 15 runoff volume 1 57750 1 ft3 Pre -development 1 yr 24 hr runoff volume 1 121600 j ft3 Post -development 1 yr 24 hr runoff volume 1 1 405 00 j ft3 Minimum required volume 57750 ft3 Volume provided j 161100 Ift3 Soils Report Summary Soil type F A� Infiltration rate 1 1795 I m/hr SHWi elevation 1 2100 1fmsl Basin Design Parameters Drawdown time (1 00 days Basin side slopes i 300 11 Basin bottom elevation 1 2500 lfmsl Storage elevation 1 2700 I f nsl Storage Surface Area j 1 16600 jftz Top elevation 1 2700 I fmsl Basin Bottom Dimensions Basin length _ F 5000 —Ift Basin width 1 2500 Ift Bottom Surface Area 1 48100 Iffz OK OK OK OK E�C:F-0V JUN 2 2 2012 BY - Form SW401 InFIlrabon Basin Rev 5 11 Apr2011 Parts 1 & 11 Design Summary Page 1 of 2 Permit No S0 8 f 2 0 2 t 8 (to be provioad by DWO) Additional Information Maximum runoff to each inlet to the basin? i 00 1—lac in OK Length of vegetative filter for overflow 000 jft Filter is too shod must be > 30 ft Distance to structure ( 000 eft Too close to structure must be minimum of 15 ft downgradlent Distance from surface waters 1 85000 eft OK Distance from water supply well(s) t N/A ' jft OK Separation from impervious soil layer ( N/A Ift OK Naturally occunng soil above shwt 400 eft OK Bottom covered with 4 In of clean sand? I y I(Y or N) OK Proposed drainage easement provided? I y I(Y or N) OK Capures all runoff at ultimate build-0utl I y ((Y or N) OK Bypass provided for larger storms? I y ((Y or N) OK Pretreatment device provided I NONE ECEIV JUN 2 2 2012 8Y _ Form SW401 Infiltration Basin Rev 5 11Apr2011 Pans I & 11 Design Summary Page 2 of 2 y� 1 Permi[No SW8 (ZO218 (to be provided by DWQ) Ill REQUIRED ITEMS CHECKLIST Please Indicate the page or plan sheet numbers where the supporting documentation can be found An incomplete submittal package will result in a request for additional Information This will delay final review and approval of the project Initial in the space provided to Indicate the following design requirements have been met If the applicant has designated an agent the agent may initial below If a requirement has not been met, attach justification Pagel Plan Initials Sheet No -?JAL— �_ 1 Plans (1 50 or larger) of the entire site showing Design at ultimate build -out Off site drainage (if applicable) Delineated drainage basins (include Rational C coefficient per basin) Basin dimensions Pretreatment system High flow bypass system Maintenance access Proposed drainage easement and public right of way (ROW) Overflow device and Boundaries of drainage easement Pi c - 4 2 Partial plan (1 = 30 or larger) and details for the infiltration basin showing Bypass structure Maintenance access Basin bottom dimensions Basin cross section with benchmark for sediment cleanout Flow distribution detail for inflow Vegetated filter and Pretreatment device Pam- e- f 3 Section view of the infiltration basin (1 = 20 or larger) showing Pretreatment and treatment areas and Inlet and outlet structures � Pr-- 25' 4 A table of elevations areas incremental volumes & accumulated volumes to verity the volume provided P4� — PG 39,435 A soils report that is based upon an actual field investigation soil borings and infltrabon tests The results of the soils report must be venfied in the field by DWO by completing & submitting the soils investigation request form County soil maps are not an acceptable source of soils Information Cr3 6 A construction sequence that shows how the infitlration basin will be protected from sediment until the entire drainage area is stabilized CLrclo!xFD 7 The supporting calculations av�'— S u 8 Ai copy of the signed and notanzed operation and maintenance (0&M) agreement 9 A copy of the deed restrictions (if required) E C E U V E JUN 2 2 2012 BY Form SW401 Infiltration Basin Rev 4 Page 1 of 1 Part III Required Items Checklist Page 1 of 1 State Stormwater Management Systems Permit No SW8 120218 MOD Broad & Gales Creek Fire Station Stormwater Permit No SW8 120218 White Oak County Designer's Certification I, N,u.p o PASST )f- , as a duly registered Hoc_,.Neer— in the State of North Carolina having been authorized to observe (periodically/ weekly/ full time) the construction of the project BepAb !� C—rA6"S c�� Fi p e srA-TNaP3 (Project) for Assor (Project Owner) hereby state that, to the best of my abilities due care and ddig nce was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications The checklist of items on page 2 of this form is included in the Certification Noted deviations from approved plans and specification Pr, p65 ct. SES] t r--� C-e�I-Tk-R c AN-%v--i LeTTEV2- P I CAD 6 ti ce N r%A-TaA-S EaC, , elegy-1 p ATED L- t't - l 4 Signature -- Registration Number. 032s7S Date 3- 3 -14 rPSH OARp t10l�FE8310N q. i SEAL ( : 032573 p e FNQ�NEEar �?. ECEIVEr MAR o 3 2014 Paae 7 of 8 State Stormwater Management Systems Permit No SW8 120218 MOD Certification Requirements P&.4- 1 The drainage area to the system contains approximately the permitted acreage , 2 The drainage area to the system contains no more than the permitted amount of built -upon area jk* 3 All the built -upon area associated with the protect is graded such that the runoff drains to the system Pr ±�:4 All roof drams are located such that the runoff is directed into the system &11." The emergency overflow elevation is per the approved plan LilL,6 The emergency overflow is located per the approved plans 21,4L4� All slopes are grassed with permanent vegetation PLQ� S Vegetated slopes are no steeper than 3 1 'k J L,9 The elevation of the forebay berm is not so high that it is causing a premature bypass of the storage volume through the emergency overflow before it can cross the berm and get into the main infiltration basin area PE-0-90 The inlets are located per the approved plans and do not cause short- circuiting of the system 40i4 1 The permitted amounts of surface area and/or volume have been provided P,;.� 12 All required design depths are provided Pc�l-13 All required parts of the system are provided &t�—l4 The required system dimensions are provided per the approved plans _15 The system functions as designed cc NCDENR-DWQ Regional Office Town of Newport Building Inspections Carteret County * VokA ,S A--T- 5,j PKlnnl,S CQN T�'LRC�'Iti(o Se-6 A•tCAct4 V Ems-+= i c osy wJ LETtb'�L Pr rop 2 - Z S -14 ECEIVE MAR 0 3 20% By I�T.Tli.Sf 7 0 3602 Player Lane Morehead City, NC 26557 -3159 P RI M U S Fax (503822- Fax f2521622-0tt7 CONTRACTING INC February 28, 2014 Pabst & Hilburn 911 Paverstone Drive Suite E Raleigh NC 27615 Pnmus Contracbng Inc has verified that the dimensions and elevations of the addbatnon basins on the Broad 8 Gales Greek Fire Station are in accordance with the Civil Drawings State of ' V County of -(!A ``) The foregoing instrument was Subscribed and swom before me gins Pay of ��� 20 Sincerely David Thompson, President Notary Public 1walN My commission expires N I I P a g c February 17, 2014 (Sent We Emef To Dowd Thompson) Primus Contracting Inc. David Thompson 3602 Player Lane Morehead City NC 28557 RE BGCFD - PLS request for serhfcation of materiels present in Infiltration Basins Dear Mr Thompson I am In receipt of the February 14 2014 small from Patty E Hilburn, AS of Pabst 6 Hfbum PA requeatlng Me contractor responsible for constructing Me hif ation Basins provided certlfcabon that the material met the 'washed sand' and one loot depth conditions as speclfed on sheet C-4 of the plans. Sunland Builders was hued to perform the alto work throughout the project constucdon We are very familiar with the standard construction practices associated with Infiltration basins here at the cost. We note that as contractors it Is our responsibgfy in accordance with section 16 4 of Chapter 16 of Ore states Stoamveter BMP manual to minlmize compaction of the bottom and sldswafs of any Infiltration dewoe We elso are familiar with the conditions of Me nu d* available NI materiefs In the area and note Met most of our natural washed sands are not uniform and Membe wig not meet the unUwmfy coeflkient of 2 or smeller In accordance with section 18 3 7 of Me state codes washed or not We note that the plans show a one foot depth of Vashed sand' to be constructed under the base area of the Inffbetion portion of the basins yet specs tcatlons were not provided and Me media was not encased with geotexSe fabric as required by state standards We tharelbre assumed Mat the send Inffl was being required due to the deteds of the sediment basin showing excevetron to elevation 23 which Is one foot below the design depth of the Infftiatbri basin at elevation 24 Of course the states burp manual section 16 3 1 requires WMvtion basins used as sedhnent basins during construction to be excavated a minimum of sbr Inches below Moir bottom prior to converting to starmwater lnStration basins once ground cover has been established We were concerned over Me potential to plug Me future IMgtraling lihsftu sofa both during construction and upon inffing for a one foot depth For these reasons we took Me risk of potential Issues during sediment and control operations and only cut the existing grade to a depth of approximately elevation 25leaving about a foot of in -aft sots above the designed bottom of the lnUmban basins. Upon stabilization of Me site we removed Me overburdan leaving the existing uniform sands exposed as the fifsrmods We therefore did not disturb the existing in -aft sags above the shallow water table and did not importprocessed sands So as a regiab►red pmfeWonM enOnser I am able to eerfiry that our means and madwds protected the predetarmbred ores forhinlbnMrni, not affecting the raft of infi tnWon dYta►mined by the doalgners and approved by the ►ogufetora We also note that stormwater is a performance standard and we recently experienced algnilkant and intense rainfall with no back up or overibw from the designed elements Sincerely / A VAMw, NCPE 022670 Professional Engineert