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HomeMy WebLinkAboutSW8970144_COMPLIANCE_20070905STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW eq� DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE WYYMMDD Michael 1. Casley, Governor �CF WA r�9W U `C September 5, 2007 Mr. James J. Bovino, President Town & Country Developers at Wilmington, Inc. 3240-3 Burnt Mill Drive Wilmington, NC 28403 NOTICE OF INSPECTION -NON-COMPLIANCE STATUS The Lakes @ Johnson Farms, Phase VI Stormwater Project No. SW8 970144 New Hanover County Dear Mr. Bovino: William G. Ross Jr.; Secretary North Carolina Department of Environment and Natural Resources Coleen It. Sullins Director Division of Water Quality Please find attached a copy of the completed form entitled "Stormwater Compliance Inspection Report". The report summarizes the findings of a recent inspection of the project's stormwater controls conducted on 8/14/2007 to determine compliance with Stormwater Permit Number SW8 970144 issued on 3/26/1997. The required actions that are necessary to bring this site into compliance are noted under the Comments section of the report. Please inform this Office in writing within fifteen (15) days of the specific actions that will be undertaken and the time frame that will be required to correct the deficiencies. Failure to provide the requested information, when required, may initiate enforcement action. If you have any questions please contact David Cox at the Wilmington Regional Office, telephone number (910) 796-7318. Sincerel Pat C. Durrett Environmental Specialist PCD/encl: S:IWQSISTORMWATIINSPECT1Pats inspections1SW8971044 cc: Wilmington Regional Office No ehCarolina ,lValyrally North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Internet: www.ncwaterauality.org Fax (910)350-2004 1-877-623-6748 An Equal OpporlunitylAffirmative Action Employer— 50% Recycled110% Post Consumer Paper Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P,E. Director Division of Water Quality October 4, 2006 Town and Country Developers 4425 Pine Holow Drive Wilmington, NC 28412 NOTICE OF INSPECTION: Cambridge Heights @ JohnsjNs Farms 70 Stormwater Project No. SW60206 / New Hanover County 1%19 Dear Permittee: mt ,,L Al V/ 5 Please find attached a copy of the completed form entitled "Stormwater Compliance Inspection Report". The report summarizes the findings of a recent inspection of the project's stormwater controls conducted on September 26, 2006 to determine compliance with Stormwater Permit Number SW8 960206 issued on March 25, 1996. A summary of the findings and comments are noted under Section 4 of the report. Please inform this Office in writing before November 4, 2006 of the specific actions that will be undertaken and the time frame required to correct the deficiencies. Failure to provide the requested information, when required, may initiate enforcement action. If you have any questions please contact me at the Wilmington Regional Office, telephone number (910) 796- 7318. Sincerely, Gary B de&er Environmental Technician EBlghb: S:1WQSISTORMWATIINSPECT1960206.Oct06 CC: Cambridge Heights HOA �a �.5 �✓�ivn/� 26 - 6 277 !�a` Carolina tura!!y North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Internet: www.ncwaterquality.org Fax (910) 350-2004 1-877-623-6748 An Equai Opportunity/Affirmative Action Employer - 50% Recycled110% Past Consumer Paper Ntflit-11 Carolina Department of Environment and Natural Resources Michael F. Easley, Governor William G. Ross, Jr., Secretary Division of Water Quality Wilmington Regional Office January 23, 2001 Mr. William H. Buchanan, Jr., Partner South College Associates, LLC 228 South Front Street Wilmington, NC 28401 Subject: COMPLIANCE INSPECTION The Lakes at Johnson Farms Stormwater Project No. SW8 970144 960206, and-940707 New Hanover County Dear Mr. Buchanan: Please find attached a copy of the completed form entitled "Stormwater Compliance Inspection Report". The report summarizes the findings of a recent inspection of the project's stormwater controls conducted on January 19, 2001 to determine compliance with Stormwater Permit Numbers SW8 970144, 960206, and 940707 issued on March 26, 1997, March 25, 1996, and March 22, 1996, respectively. A summary of the findings and comments are noted under Section 4 of the report. Please inform this Office in writing before February 23, 2001 of the specific actions that will be undertaken and the time frame required to correct the deficiencies. Failure to provide the requested information, when required, may initiate enforcement action. If you have any questions please contact me at the Wilmington Regional Office, telephone number (910) 395-3900. Sincerely, Linda Lewis Environmental Engineer RSS/arl: S:IWQSISI,ORMWATIINSPECn940707-2.JAN cc: Joseph Hill, P.E. Central Files Wilmington Regional Office 127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Employer 50'% recycled/10% post -consumer paper r STORMWATER COMPLIANCE INSPECTION REPORT I . Project Name: The Lakes at Johnson )~arms Project Number: SW8 970144, 960206, and 940707 Control Measure: 5 wet detention ponds Water Body: Mott Creek Classification: C Sw Directions to site, address: Wishing Well Road off Carolina Beach Road, approximately I mile north of Monkey Junction. 2. Inspection Date: January 19, 2001 Weather Conditions: Sunny, warm 3. Compliance Issues: a. The main issue, as has been documented in past reports, is the ]ack of a vigorous vegetated cover on the slopes. b. The approved plans indicate that a trash rack is to be constructed, however, all of the outlet structures have open faces above the orifice with a grate on top. This configuration does not catch the majority of the trash that collects in the ponds. C. Recorded deed restrictions have not been received for Phases V or VI. d. The Designer's Certification for Phases V and VI has not been submitted. 4. Required Actions: a. Please repair,eroded areas, and stabilize the pond slopes with permanent vegetated cover. Planting a temporary cover will not satisfy the requirement to provide permanent cover. b. Please add trash racks which also cover the open face of the outlet structure. C. Please submit a copy of the recorded deed restrictions for Phases V and VI. d. Please submit the Designer's'Certification for Phases V and VI. ` Inspector: Linda LewisAO Water Quality/Wilmington Regional Office/(910) 395-3900 RSS/arl: S:1WQSISTORMWATIINSPECT1940707.JAN 2 North Carolina Department of Environment and Natural Resources Michael F. Easley, Governor William G. doss, .Ir., Secretary Division of Mlater Quality Wilmington Regional Office January 23, 2001 Mr. James J. Bovino, President Town and Country Developers at Wilmington. Inc. 300 `]-ice Boulevard, Whiteweld Center International Woodcliff. NJ 07675 Subject: Ownership Transfer The Lakes at Johnson Farms, Phase VI Stormwater Project No. 970144 New Hanover County Dear Mr. Bovino: On January 12, 1999, the Division of Water Quality sent you the Operation and Maintenance plans to be signed for the two detention ponds (#4 and #5) at the Lakes at Johnson Farms, Phase V I. You had already signed the permit name/ownership change form (copy attached) on July 24, 1998, but the State could not complete the transfer until those Operation and Maintenance plans were signed and returned (copies attached). To date, the requested documents have not been provided. Please find enclosed a copy of the inspection report compiled after a recent inspection of the facilities was performed. Since the transfer has not been completed, the report was sent to Mr. Buchanan, but I suspect lie will be in touch with you to address the deficiencies found during that inspection, if in .fact, you are the responsible party. Please sign and return the enclosed Operation and Maintenance plans to finish the transfer. If you have any questions, please do not hesitate to call me at (910) 395-3900. Sincerely, Linda Lewis Environmental Engineer RSSlarl: S:1WQS1S"1'ORMWATILE'I'TERS1970144-2.JAN cc: Linda Lewis William 1-I. Buchanan, Jr. 127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Ctlual opportunity Affirmative Action Employer 50%. recycled110` . post-cunsumer paper i PERMIT NAME/OWNERSHIP CHANU FORM 1 HIS APPLICATION PACKAGE WILL NOT BE ACCEPTED BY THE DIVISION OF ENVIRONMENTAL MANAGEMENT UNLESS ALL OF THE APPLICABLE ITEMS LISTED BELOW ARE INCLUDED WITH THE SUBMITTAL. � REQUIRED iTEMS:7 1. This compi6i6d application �2. Processing fee of $ 100.00 (Checks to be made payable to DEHNR) -3. If an ownership change, legal documentation of the transfer of ownership (such as a contract, deedur T articles of incorporation) f CERTIFICATION. MUST BE COMPLETED AND SIGNED BY BOTH THE CURRENT PERMIT HOLDER AND THE NEW APPLICANT IN THE CASE OF CHANGE OF OWNERSHIP. FOR NAME CHANGE ONLY, COMPLETE AND SIGN THE APPLICANT'S CERTIFICATION.' Current Permittee's Certification: I, William H . Buchanan, J r . , attest that this application for namelownership change has been reviewed and is accurate and complete to the best of my knowledge. I understand that if all required parts of this application are not completed and that if all required supporting information and attachments are not Included, thi plicatio lcage will be re as incomplete. 7 Signature: Date: /— Applicant's Certification: I, James J . B o v i n o , attest that this application for a name/ownership change has been reviewed and is accurate and complete to the best of my knowledge. I understand that if all required parts of this application are not completed and that if all required supporting information and attachments are not included, this7g2�g�retwumtdasincomplete. SignatureDate; July 24, 1998 Town County eve opers at Wilming corporated THE COMPLETED APPLICATION PACKAGE, INCLUDING ALL SUPPORTING INFORMATION AND MATERIALS, SHOULD BE SENT TO THE FOLLOWING ADDRESS: North Carolyn of Environmental Management w ..� a uality Section rmits and ineering Unit P.O. Box 5 7 Raleigh, -North Carolina 27626-0535 Telephone: (919) 733-5083 Fax: (919) 733-0719 � � � ^ ` ` . `� . `�' � ` ` . � `� ` ` ' � ' � ' ~ ' > � � ''``. \ '^ . . . ` ' ._ .�r -~ ^ ` ,�.� ^. ' �`' ' ' `� Permit No. SGUB q_�UI ��- (io be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Stormwater Management Plan Review: A complete storrnwater management plan submittal includes a wet detention basin supplement for each basin, design calculations, plans and specifications showing all basin and outlet structure details, and a signed and `notarized operation and maintenance agreement. . PROJECT INFORMATION (please complete the following information): ,-oject Name-0 7dJr1_ C3-y E' •n S >�� 1. Contact Person: Phone Number: For projects with multiple basins, specify which basin this worksheet applies to: POND tt' L Basin Bottom Elevation 'ft. (average elevation of the floor 'of the basin) Permanent Pool Elevation , d 4 ft. (elevation of the orifice) I emporary Pool EIevation zo. (p ft. (elevation of the discharge structure overflow) Permanent Pool Surface Area 1'5LE300 sq. ft. (water surface area at the orifice elevation) Drainage Area 10.14 ac. (on -site and off -site drainage to the basin) Impervious Area d, 2Cp& - ac. (on -site and off -site drainage to the basin) I Permanent Pool Volume A cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume _ 2 ( 4(o 1 _ cu. ft. (volume detained above the permanent pool) T F�orebay Volume cu. ft. SA/DA1 used 3.063 `Tv-- (surface area to drainage area ratio) Diameter of Orifice 71 iri. Design TSS Removal cjp % (85% TSS removal required, see item k below) I , III. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices manual (N.C. Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Form SWU-102 Rev 1/August 1998 Page 1 of Applicants Initials a. The temporary pool controls runoff from the 1 inch storm event. b. The basin length to width ratio is greater than c. The basin side slopes above the permanent pool are no steeper than 3:1. d. A submerged and vegetated perimeter shelf at less than 6:1 is provided (show detail). e. Vegetation above the permanent pool elevation is specified. f. An emergency drain is provided to empty the basin. g.. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). h. The temporary pool draws down in 2 to 5 days. i. A trash rack is provided for both the overflow and orifice. j. The forebay volume is approximately equal to 20% of the total basin volume. k. Sediment storage is provided in the permanent pool. 1. A 30-Moot vegetative filter is provided at the outlet2 (include erosive flow calculations) m. Recorded drainage easement for each basin including access to nearest right-of-way. n. A site specific operation and maintenance (O&M) plan is provided. o. A vegetation management/mowing schedule is provided in the O&M plan. p. Semi-annual inspections are specified in the O&M plan. q. A debris check to be performed after every storm event is specified in the O&M plan. r. Specific clean -out benchmarks are specified in the O&M plan (elevation or depth). s. A legally responsible party is designated in the O&M plan3 (include name and title). t. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified to be performed prior to use as a wet detention basin. Footnotes: When usin-a the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. ? The requirement for a vegetative filter may be waived if the wet detention basin is designed to meet 90% TSS removal. 3 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. IIL WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, forebay, non-integrated pretreatment systems (pretreatment other than forebays), and the vegetated filter if one is provided. This system (check one) ❑ does Xdoes not incorporate a vegetated filter. This system (check one) ❑ does does not incorporate non-integrated pretreatment. Maintenance activities shall be performs as follows: 1. After every significant runoff producing rainfall event and at least monthly: Form SWU-102 Rev 1/August 1998 Paoe 2 of3 4 d: Inspect the wet detention basin system for sediment accumulation; erosion, trash accumulation, grass cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth. Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (Le. stockpiling near a wet detention basin or stream, etc.)_ The original design depth is: 4-5` r The sediment removal benchmark is: 3.5 5. Remove cattails and other indigenous wetland plants when they cover 75% of the basin surface. These plants shall be encouraged to grow along the basin perimeter. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to. the maximum extent practical. 7. All components of the wet detention basin system shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the above maintenance procedures. I agree to notify DWQ of any problems with the system or changes in the name of the project, responsible party, or address. Print name: Phone: I ITitle: Signature: Date: a Notary Public for the State of , County of , do hereby certify that personally appeared before me this day of , 19 ,and acknowledge the due execution of the forgoing infiltration system maintenance requirements. Witness my hand and official seal, SEAL My commission expires Form SWU-102 Rev I/August 1998 Page 3 of 3 Permit No. SirU C{70 l 4 :1 (to be provided by DWO) State of North Carolina Department of Environment and Natural Resources y Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes a wet detention basin supplement for each basin, design calculations, plans and specifications showing all basin and outlet structure details, and a signed and notarized operation and maintenance agreement. I. PROJECT INFORMATION (please complete the following information)- Project Name: 1 �1� �-3�e5 (�• �hn5o't Form � Contact Person: Phone Number: For projects with multiple basins, specify which basin this worksheet applies to: POND # 5 Basin Bottom Elevation / 3 ft. (average elevation of the floor of the basin) Permanent Pool Elevation ft- (elevation of the orifice) 4Temporary Pool Elevation 20, 2 ft. (elevation of the discharge structure overflow) I Permanent Pool Surface Area OO sq. ft. (water surface area at the orifice elevation) I Drainage Area 12,5 ac.. (on -site and off -site drainage to the basin) Impervious Area S03¢ ac. (on -site and off -site drainage to the basin) ' Permanent Pool Volume O A cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume. 24-,Co&O cu. ft. (volume detained above the permanent pool) 1 orebay Volume cu. ft. SAJDAI used 2, 117 76 .. (surface area to drainage area ratio) Diameter of Orifice 2 in. I Design TSS Removal qD % (85% TSS removal required, see item k below) . REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices manual (N.C. Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008.. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Fdrm SW-102 Rev 1/August 1998 Paae I of 3 Applicants Initials ' a. The temporary pool controls runoff from the 1 inch storm event. b. The basin length to width ratio is greater than 3:1. c. The basin side slopes above the permanent pool are no steeper than 3: I . d. A submerged and vegetated perimeter shelf at less than 6:I is provided (show detaiI). e. Vegetation above the permanent pool elevation is specified. f An emergency drain is provided to empty the basin. g. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). h_ The temporary pool draws down in 2 to 5 days. i. A trash rack is provided for both the overflow and orifice. j. The forebay volume is approximately equal to 20% of the total basin volume. k. Sediment storage is provided in the permanent pool. 1. A 30-foot vegetative filter is provided at -the outlet' (include erosive flow calculations) m. Recorded drainage easement for each basin including access to nearest right-of-way. n. A site specific operation and maintenance (O&M) plan is provided. o. A vegetation management/mowina schedule is provided in the O&M plan. p. Semi-annual inspections are specified in the O&M plan. . q. A debris check to be performed after every storm event is specified in the 0&M plan. r. Specific clean -out benchmarks are specified in the 0&M plan (elevation or depth). s. A legally responsible party is designated in the O&M plan3 (include mane and title). t. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified to be performed prior to use as a wet detention basin. Footnotes: 1 When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. The requirement for a vegetative filter may be waived if the wet detention basin is designed to meet 90% TSS removal. 3 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. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, forebay, non-integrated pretreatment systems (pretreatment other than forebays), and the vegetated filter if one is provided. This system (check one) ❑ does � does not incorporate a vegetated filter. This system (check one) ❑ does `does not incorporate non-integrated pretreatment. Maintenance activities shall be performs as follows: I. After every significant runoff producing rainfall event and at least monthly: Form SWU-102 Rev 1/August 1998 Page 2 of a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, grass cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth. Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The original design depth is: Cof The sediment removal benchmark depth is: 4, 5 15. Remove cattails and other indigenous wetland plants when they cover 75% of the basin surface. These plants shall be encouraged to grow along the basin perimeter. �6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. 7. All components of the wet detention basin system shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the above maintenance procedures. I agree to notify DWQ of any problems with the system or changes in the name of the project, responsible party, or address. Print name: I . Address: t Fhone: Title: Signature: I Date: a Notary Public for the State of , County of , do hereby certify that personally appeared before me this day of 19 ,and acknowledge the due execution of the forgoing infiltration system maintenance requirements. Witness my hand and official seal, SEAL My commission expires Form SWU-102 Rev 1/August 1998 Page 3 of3 North Carolina Department of Environment and Natural Resources Michael F. Easley, Governor William G. Ross, Jr., Secretary Division of Water Quality Wilmington Regional Office January 23, 2001 Mr. William H. Buchanan, Jr., Partner South College Associates, LLC 228 South Front Street Wilmington, NC 28401 11A LT A 4 0 • ����. NCDENR ENVIRONMENT AND NATURAL RESOURCES Subject: COMPLIANCE INSPECTION The Lakes at Johnso^ Farms Stormwater Project No. SW8 970144 960206, and 940707 New Hanover County Dear Mr. Buchanan: Please find attached a copy of the completed form entitled "Stormwater Compliance Inspection Report". The report summarizes the findings of a recent inspection of the project's stormwater controls conducted on January 19, 2001 to determine compliance with Stormwater Permit Numbers SW8 970144, 960206, and 940707 issued on March 26, 1997, March 25, 1996, and March 22, 1996, respectively. A summary of the findings and comments are noted under Section 4 of the report. Please inform this Office in writing before February 23, 2001 of the specific actions that will be undertaken and the time frame required to correct the deficiencies. Failure to provide the requested information, when required, may initiate enforcement action. If you have any questions please contact me at the Wilmington Regional Office, telephone number (910) 395-3900. Sincerely, ,�&� A.," Linda Lewis Environmental Engineer RSSlarl: S:1WQSISTORMWATIINSPEC R940707-2.JAN cc: Joseph Hill, P.E. Central Files Wilmington Regional Office 127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Employer 50% recycled110% post -consumer paper STORMWATER COMPLIANCE INSPECTION REPORT 2 Project Name: The Lakes at Johnson Farms Project Number: SWS 970144, 960206, and 940707 Control Measure: 5 wet detention ponds Water Body: Mott Creek Classification: C SW Directions to site, address: Wishing Well Road off Carolina Beach Road, approximately 1 mile north of Monkey Junction. Inspection Date: January 19, 2001 Weather Conditions: Sunny, warm 3. Coriipliance Issues. a. The main issue, as has been documented in past reports, is the lack of a vigorous vegetated cover on the slopes. b. The approved plans indicate that a trash rack is to be constructed, however, all of the outlet structures have open faces above the orifice with a grate on top. This configuration does not catch the majority of the trash that collects in the ponds. C. Recorded deed restrictions have not been received for Phases V or VI. d. The Designer's Certification for Phases V and VI has not been submitted. 14. Required Actions: a. Please repair eroded areas, and stabilize the pond slopes with permanent vegetated cover. Planting a temporary cover will not satisfy the requirement to provide permanent cover. b. Please add trash racks which also cover the open face of the outlet structure. C. Please submit a copy of the recorded deed restrictions for Phases V and VI. d. Please submit the Designer's Certification for Phases V and VI. Inspector: Linda Lewis Water Quality/Wilmington Regional Office/(910) 395-3900 RSS/arl: S:IWQSISTORMWATIINSPECT1940707.JAN 2 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. The outlet/bypass structure elevations are per the approved plan 5. The outlet structure is located per the approved plans. 6. Trash rack is provided on the outlet/bypass stricture. 7. All slopes are grassed with permanent vegetation. $. Vegetated slopes are no steeper than 3:1. 9. The inlets are located per the approved plans and do not cause short-circuiting of the system. 1 p. The permitted amounts of surface area and/or volume have been provided. .11. Required drawdown devices are correctly sized per the approved plans. 12. All required design depths are provided. 13. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 14. The overall dimensions of the system, as shown on the approved plans, are provided. S:IWQSISTORMWATIFORMSIPECERT.FOR cc: NCDENR-DWQ Tony Roberts, New Hanover County Building Inspector i The Lakes at Johnson Farms, Phase VI New Hanover County Stormwater Project No. SW$ 970144 Designer's Certification 1, , as a duly registered in the State ofNorth Carolina, having been authorized to observe (period ical lylweekly/full time) the construction of the project, (Project) for (Project Owner) hereby Mate that. to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. Required Items to be checked for this certification to be considered complete are on page 2 of this form. Noted deviations from approved plans and specifications: SEAL Signature Registration Number Date cc: NCDENR DWQ Regional Office Tony Roberts, New Hanover County Building Inspector Certification Requirements: l . The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. The outlet/bypass structure elevations are per the approved plan. 5. The outlet structure is located per the approved plans..... 6. Trash rack is provided on the outlet/bypass structure. 7. All slopes are grassed with permanent vegetation. S. Vegetated slopes are no steeper than 3:1. 9. The inlets are located per the approved plans and do not cause short-circuiting of the system. 10. The permitted amounts of surface area and/or volume have been provided. 11. Required drawdown devices are correctly, sized per the approved plans. 12. All required design depths are provided. 13. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 14.. The overall dimensions of the system, as shown on the approved plans; are provided: S:IWQSISTORMWATIFORMSIPECERT.FOR cc: NCDENR-DWQ Tony Roberts, New Hanover County Building Inspector 4 ,■ The Lakes at Johnson Farms, Phase V New 1 Ianover County Stormwater Project No.'SW8 960206 Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodicall ylweekIy/full time) the construction of the proj ect, (Project) for {Project Owner) hereby state that, to the best of my abilities, due care and diligerice 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. Required Items to be checked for this certification to be considered complete are on page 2 of this form. Noted deviations from approved plans and specifications: Signature: Registration Number Date NCDENR DWQ Regional Office Tony Roberts, New Hanover County Building Inspector SEAL E HIGH -DENSITY STATE STORMWATER INSPECTION REPORT Project Name: The Lakes at Johnson Farms Phase VI Permit No: SW8970144 Expiration date: 3126/07 Contact Person: Mr. William Buchanan,_ Partner Phone No: County: New Hanover Center of Project GPS: Lat: 34' 09' 27.834 "N Long: 771 54' 02.387 "W Facility Address: #4 off of Pine Hollow Dr. Pond 5 one street over from S lit Rail Dr. City: Wilmington, NC Zip: 28401 (If multiple basins exist, specify basin(s): 2 basins Pond #4 and Pond #5 Entry time: 1:00 am ❑ pm ® Exit time: 2:15 am Elpm ® Dater 8114/07 Method of Treatment: (check one) ® Wet Detention ❑ Dry Detention ❑ Bioretention ❑ Wetland ❑ Sandfilter ❑ Swale ❑ Pocket Wetland ❑ Level Spreader ❑ Permeable Pavement ❑ Infiltration Basin Other: ❑ Receiving Waters: Barnards Creek . Classification: C-Sw River Basin: Cape Fear GENERAL QUESTIONS FILE REVIEW 1. A signed copy of the Engineer's certification is in the files: 2. A signed copy of the Operation & Maintenance Agreement is in the files: 3. A copy of the recorded deed restrictions is in the files: SITE VISIT 1. Drainage area is consistent with the permit: 2. Built -upon area to drainage area is consistent with the permit: 3. All built -upon area (as permitted) is graded such that the runoff drains to the system: 4. The outlet structure is located per the approved plans: 5. The trash rack is provided on the outletlbypass structure: 6. The trash rack is free of debris and excess trash: 7. All slopes are grassed with permanent vegetation: 8. Vegetated slopes are no steeper than 3:1 9. The inlets are located per the approved plans and do not cause short-circuiting of the system: YES NO NA NE ❑ ® ❑ ❑ ® ❑ ❑ ❑ ❑ ® ❑ ❑ ® ❑ ❑ ❑ ® ❑ ❑ ❑ ® ❑ ❑ ❑ ® ❑ ❑ ❑ ® ❑ ❑ ❑ ❑ ® ❑ ❑ ❑ ® ❑ ❑ ® ❑ ❑ ❑ ❑ ® ❑ ❑ r 10. Access points are clear and well maintained: 11. Forebay is free of excessive sediment: 12. Banks are stable with no erosion present: 13. Vegetation and trash have been removed as needed: 14. Drawdown device is correctly sized per the approved plans: 15. Grass is mowed (not scalped) as required: 16. All required parts of the system are provided (such as vegetated shelf and a forebay): 17. The swale or outlet bypass is in the correct place and is in good condition: 18. Vegetated shelf is 6:1 and properly vegetated: 19. Invasive species/tree control is provided as needed YES NO ® ❑ 20. Tree pruning, mulch and plant replacement are provided as needed in the bioretention basin: 21. Permeable pavement has had regular sweeping and vacuuming: 22. Gravel replacement is performed as needed: 23. Excessive landscape debris (grass clippings, leaves, & sediment) are controlled: 24. Large stemmed vegetation is kept off of the level spreader: 25. Sediment and debris is removed from behind the lip of the level spreader on a routine basis: 26. Maintenance records are available for inspection: I O NLA .❑ R COMMENTS: each NO answer should have a comment The following items of concern were noted during the inspection and must be addressed immediately: 1. A signed copy of the Engineer's certification is not in the files as required. This should be submitted at once. 2. A copy of the recorded deed restrictions is not in the files as required. These should be provided at once. 3. Pond #4 has severe erosion due to the placement of the inlet. 4. The berm between the forebay and the main pond has been "blown out" and should be returned to design specifications. S. The outlet box is not accessible to check the orifice. Pond #5 1. Berm between the forebay and the main pond has been "cut-out". This was not shown on the plans 2. Some of the vegetative cover on the slopes and top appears to have been mowed to close causing it to die off also causing some erosion of the slopes to take place. This should be repaired at once. 3. The trash rack is full of lawn debris and needs to be kept clear. 4. the pond level was still high even though it had been over a week since a rainfall event due to the partially plugged orifice. 5. Maintenance records were not available for view. Pond #4 Inlet directly across from berm has Severe erosion due to inlet configuration blown out the berm could cause short circuiting f, 'V 7v, 2"; 14�2007! �,qk; IAIUU I '08/ 08/14/2007 ILI W;t �,n, PIR 17- 08/14/2007 �A WAYS _ j7e it R� M 1 007 t J " 7�11 �i mii. ::� 466. • - i .�: •J •.�w��`tj'.I:7�. NJ �'*.�j^'J -, yam, .�o � � '�,. � � -. 08114%2007'lei- 6,�08%i4/2607�a �� OAK 08/14/20( _S��f6 al � t1r7 Na„rs���w t