i 07 /01/2021 Mount Pleasant Road Widening Phase I Storm Water Pollution Prevention Plan CIB #36-210 TABLE OF CONTENTS I.P OLICY AND G ENERAL P ROCEDURES ................................................................................................... 1 II.I NTRODUCTION ...................................................................................................................................... 3 III.P ROJECT D ESCRIPTION .......................................................................................................................... 5 IV.S ITE D ESCRIPTION ................................................................................................................................. 7 V.S TORMWATER POLLUTION PREVENTION MEASURES AND CONTROLS ................................................... 9 VI.L OCAL P LANS ...................................................................................................................................... 12 VII. I NSPECTIONS AND SYSTEM MAINTENANCE ......................................................................................... 12 APPENDICES APPENDIX A DELEGATION OF AUTHORITY TO SIGN STORMWATER INSPECTION AND OTHER REPORTS GENERAL CONTRACTOR SIGNATURE DELEGATION FOR REPORTS CONTRACTOR QUALIFICATIONS APPENDIX B VPDES GENERAL PERMIT FOR STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES (VAR10I865) 2019 REGISTRATION STATEMENT, 2019 PERMIT FEE FORM APPENDIX C OPERATOR CERTIFICATION FORM APPENDIX D INSPECTION REPORTS APPENDIX E NOTICE OF TERMINATION (NOT) FORM APPENDIX F STABILIZATION AND CONSTRUCTION ACTIVITIES LOG APPENDIX G SELECTED APPROVED EROSION AND SEDIMENT CONTROL SITE PLAN SHEETS APPENDIX H SWPPP CONSTRUCTION SITE NOTICE, PROJECT-SPECIFIC VPDES PERMIT AUTHORIZATION LETTER FROM DEPARTMENT OF ENVIRONMENTAL QUALITY APPENDIX I STORMWATER MANAGEMENT PLAN APPENDIX J SWPPP AMMENDMENT LOG APPENDIX K POLLUTION PREVENTION (P2) PLAN APPENDIX L WETLAND PERMITS & FORMS1 I.POLICY AND GENERAL PROCEDURES This SWPPP has been developed in accordance with the requirements contained in the Virginia Pollution Discharge Elimination System (VPDES) storm water general permit for discharges from construction activities (9VAC 25-880). It is the responsibility of the Operator involved with grading, drainage, utilities or who implement a pollutant control measure identified in the Storm Water Pollution Prevention Plan (SWPPP) to secure authority to discharge stormwater from land disturbing activities of less than one acre for areas within common plans of development or sale, or greater than one acre for all other construction activities, in full conformance with the stormwater regulations of the Virginia Department of Environmental Quality (VDEQ) as contained in 9VAC 25-880. The Operator and all subcontractors must comply with the requirements of the VSMP as contained in the VDEQ VPDES storm water general permit and implementing regulations (9 VAC 25-880) and the erosion and sediment control requirements of the VDEQ as published in the Virginia Erosion and Sediment Control Handbook (current edition). These requirements are as follows: A.A copy of the Registration Statement for coverage under the general permit for storm water discharges from construction activities (Appendix H) as well as the actual general permit when issued by the VDEQ (Appendix B) shall be maintained by the Operator for inspection at the construction site. Land disturbing activities cannot commence until verification of coverage is received by the Operator from VDEQ. A copy of the notice of coverage letter must be posted conspicuously near the main entrance of the construction activity, per VPDES Construction General Permit (CGP) Part II.C. B.A complete copy of the SWPPP, including copies of all inspection reports, plan revisions, etc., must be retained by the Operator at the project site at all times during working hours and kept in the Operators’s permanent project records for at least three years following submission of the Notice of Termination (NOT). Notice of the location of the SWPPP must be posted conspicuously near the site’s entrance, with information for public access provided. C.The Operator must provide names and addresses of all subcontractors working on this project who will be involved with all construction activities that disturb site soil. This information must be kept with this SWPPP. D.The Operator and all subcontractors involved with land disturbing for this project must sign a copy of the appropriate certification statement included in Appendix C which will be incorporated into the construction contract. E.As described below, the Operator shall conduct regular inspections every four (4) days to determine effectiveness of the SWPPP. The SWPPP shall be modified by the Operator as needed to prevent pollutants from discharging from the site. The Operator’s inspector must be both a person familiar with the site and the nature of the major construction activities and be qualified to evaluate both overall system performance and individual component performance. Additionally, the Operator’s inspector must either be someone empowered to implement modifications to this SWPPP and the pollutant control devices, if needed, in order to increase effectiveness to an acceptable level, or someone with the authority to cause such things to happen. This authority should be delegated to the inspector by using the enclosed Letter of Delegation of Authority (Appendix A) signed by the Operator naming the person or position responsible for undertaking these tasks on behalf of the Operator. F.This SWPPP shall be updated each time there are modifications to the pollutant prevention2 system or a change of Operators working on the project that disturbs site soil. The City shall notify the governing reviewing agency before these modifications are implemented, unless immediate action is necessary to prevent unauthorized discharges. If immediate Operator action is needed, then the Operator shall notify the governing reviewing agency of the action as soon as practicable. G.Discharge of oil or other hazardous substances into the storm water is subject to reporting and cleanup requirements. Refer to Part III.G of the VSMP General Permit for additional information. Copies of the VPDES General Permit and the Registration Statement forms are available on the Department of Environmental Quality web site (http://www.deq.virginia.gov/Programs/Water/StormwaterManagement/VSMPPermits.as px). H.Once the site reaches final stabilization, the Operator shall complete and submit two copies of the NOT form for activities on site. This form is included as Appendix E. If a section or phase of the project reaches final stabilization prior to the entire project reaching final stabilization, then that section may be clearly marked on the site plans and the date of final stabilization recorded in the SWPPP. Areas so marked go to a 30-day inspection schedule. I.This SWPPP is intended to control water-borne and liquid pollutant discharges by some combination of interception, filtration, and containment. The Operator and all subcontractors implementing this SWPPP shall remain alert to the need to periodically refine and update the SWPPP in order to accomplish the intended goals. J.This SWPPP shall be amended as necessary during the course of construction in order to keep it current with the pollutant control measures utilized at the site. Amending the SWPPP does not mean that it has to be reprinted. It is acceptable to handwrite revisions, add addenda, sketches, new sections, and/or revised drawings. K.A record of the dates when land disturbing activities occur, when construction activities temporarily or permanently cease on a portion of the site, and when stabilization measures are initiated shall be maintained by the Operator until the NOT is filed. A log for keeping such records is included in Appendix F.3 II.INTRODUCTION This SWPPP has been prepared for land disturbing activities associated with the construction of the Mount Pleasant Road Widening Phase I in Chesapeake, Virginia. This SWPPP includes the elements necessary to comply with the Storm Water General Permit issued by the VDEQ under the VPDES and all local governing agency requirements. This SWPPP shall be implemented at the start of construction. Construction phase pollutant sources anticipated at the site are: (mark appropriate activities) Disturbed (bare) soil, Vehicle fuels and lubricants, Chemicals associated with building construction, and building materials, Asphalt and asphalt pavement waste; chlorine for water line flushing, Other pollutants (specify): Portable sanitary facilities Without adequate control there is the potential for each type of pollutant to be transported by stormwater. The project will consist of the following basic activities: (mark appropriate activities) Site grading, Paving work, Installation of stormwater management and drainage systems, Removal of stormwater pipe, Other activities: Utility work Purpose: A major goal of pollution prevention efforts during project construction is to control soil and pollutants that originate on the site and prevent them from flowing to surface waters of the Commonwealth. The purpose of this SWPPP is to provide requirements for achieving that goal. A successful pollution prevention program also relies upon careful inspection and adjustments during the construction process in order to enhance its effectiveness. Scope: This SWPPP must be implemented when land disturbing activities begin on the site. This SWPPP must be made available for public inspection upon public request on site during normal business hours for the term of the permit authorization for the site. The SWPPP Construction Site Notice as well as a copy of the DEQ Coverage Letter (Appendix H) must be posted conspicuously and readable from a public right of way at the job site. This SWPPP primarily addresses the impact of storm rainfall and runoff on areas of the ground surface disturbed during the construction process. In addition, there are recommendations for controlling other sources of pollution that could accompany the major construction activities. 4 Forms required to implement the SWPPP are included in the Appendices to this document. The VPDES General Permit for Storm Water Discharges from Construction Activities prohibits most non-storm water discharges during the construction phase. Allowable non-storm water discharges that may occur during construction on this project, which would therefore be covered by the General Permit, include: 1.Discharges from fire-fighting activities; 2.Fire hydrant flushing; 3.Water used to wash vehicles or control dust where detergents are not used; 4.Water flowing from potable sources and water line flushing; 5.Water used to control dust; 6.External building wash down which does not use detergents; 7.Runoff from pavement wash down where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents have not been used; 8.Uncontaminated air conditioning or compressor condensate; 9.Springs and uncontaminated groundwater; 10.Foundation or footing drains where flows are not contaminated with process materials such as solvents; 11.Uncontaminated excavation dewatering; and 12.Landscape irrigation. The techniques described in this SWPPP focus on providing control of pollutant discharges with practical approaches that utilize readily available expertise, materials, and equipment. The Operator referred to in this SWPPP is the City of Chesapeake. The Operator and their subcontractor(s) will construct the site development improvements in accordance with the approved plans and this SWPPP. The “Qualified Personnel” (QP) responsible for conducting SWPPP inspections is delegated authority via the forms in Appendix A (per the CGP Part II A.6). The QP is required to provide a "Responsible Land Disturber" (RLD) certificate and/or certificate of completion of the "Erosion and Sediment Control for Construction Sites" online training course provided by the Municipal Online Stormwater Training Center (MOST), or other documentation of qualifications to be included in Appendix A. 5 III.PROJECT DESCRIPTION Described below are the land disturbing construction activities that are the subject of this SWPPP. They are presented in the order (or sequence) they are expected to begin, but each activity will not necessarily be completed before the next begins. Also, these activities could occur in a different order if necessary to maintain adequate erosion and sedimentation control: A.Specifically, the project will consist of widening Mount Pleasant Road to accommodate a center turn lane. The widening will occur on the north side of the road from Beauregard Drive proceeding east for approximately 2,700 linear feet to the Coopers Ditch Bridge. The typical section will include 12-foot lanes, curb and gutter and a 5-foot sidewalk along the north side of the road. B.Sequence of Construction 1.Install construction entrance. 2.Install silt fence, inlet protection, and tree protection as shown on the plans. 3.Conduct clearing and grubbing activities. 4.Conduct all site work construction activities. 5.Within seven days, temporarily seed all denuded areas that will remain dormant for 14 days or more, and permanently seed denuded areas that have reached final grade. 6.Remove all temporary erosion and sediment control measures in accordance with the latest edition of the Virginia Erosion and Sediment Control Handbook. Do not remove erosion control measures until the contributing drainage area has been permanently stabilized. C.The project site consists of 2.25 acres with a disturbed area of 2.25 acres. D.The pre-development runoff coefficient of the site is 0.41. The runoff coefficient will be increased to 0.69 under post-development conditions. E.The existing site is comprised of pervious cover (maintained lawns and turf/roadside ditch), and impervious cover (pavement). F.Other potential sources of pollution – Vehicle fuels and lubricants and Portable sanitary facilities. G.The project will be designed to comply with the Storm Water Management regulations. Runoff from the site will be will be controlled via appropriate erosion and sediment control measures. H.The selected erosion and sediment control drawings, grading and drainage drawings, and/or erosion and sediment control narrative provided in Appendix G illustrate/outline the following: 1.Drainage patterns and approximate slopes or contours anticipated after grading activities; 2.Areas of soil disturbance and areas of the site which are not to be disturbed;6 3.Location of major structural and non-structural controls; 4.Location of areas where stabilization practices are expected to occur including types of vegetative cover; 5.Surface waters including wetlands; 6.Locations where stormwater is discharged to a surface water with an outline of the drainage area for each discharge point; 7.Existing and planned paved areas and buildings; 8.Location of permanent stormwater management practices to be used to control pollutants in stormwater after construction activities have been completed; 9.Location of all off-site materials, waste, borrow or equipment storage areas covered by the plan; and 10.Location of other potential sources of pollution. The actual schedule for implementing pollutant control measures will be determined by project construction progress. Down slope protective measures must always be in place before soil is disturbed. 7 IV.SITE DESCRIPTION Included as part of this SWPPP in Appendix G are selected project construction drawings. Please refer to them for detailed site information. A.Site Location – The proposed site is located the north side of the Mount Pleasant Road from Beauregard Drive proceeding east for approximately 2,700 linear feet to the Coopers Ditch Bridge. The closest bodies of water are Coopers Ditch and Chesapeake Canal, which are located in the Albemarle HUC (03010205). B.The project site consists of 2.25 acres and elevations on the site range from 9’ to 16’ (approximately), with the project outfall at approximate elevation 2’ based on NAVD 88. The proposed site grading and drainage is intended to mimic the existing drainage patterns. Hydrology from the site drains east and west via a combined stormwater pipe/ditch along the north side of Mount Pleasant Road. The existing land cover on site consists of residential areas, grass, some woods and wetlands along Coopers Ditch. C.Rainfall Information – A rain gauge shall be installed on site to determine if an inspection triggering rainfall event has occurred. An inspection “triggering rainfall event” is rainfall that equals or exceeds one quarter inch (0.25”) in a 24-hour period at the construction site. The average annual rainfall for Chesapeake, Virginia is approximately 46 inches (NORFOLK INTL AP Weather station). The table below displays the monthly average rainfalls in Chesapeake: Source: National Weather Service via IDcide D.Site Soils – Site soils consist of Chesapeake-Urban land complex, Dragston-Urban land- Tomotley complex, Munden-Urban land complex, Nawney silt loam, and Tomotley-Urban land-Bertie complex. These findings are based on the United States Department of Agriculture (USDA) web soil survey (http://websoilsurvey.nrcs.usda.gov/app/HomePage.htm). E.Total Area and Disturbed Area – The project site consists of 2.25 acres with a disturbed area of 2.25 acres. F.Quality of Receiving Surface Waters and/or Wetlands – The proposed drainage of this project site will drain to Coopers Ditch which has not been assessed for impairments. Coopers Ditch ultimately drains into the Albemarle Canal which is included on the Virginia Department of Environmental Quality 2012 305(b)/303(d) Water Quality Assessment Integrated Report as impaired for Aquatic Life. The Aquatic Life use is impaired based on the failure to meet the dissolve oxygen criteria for Open Water. To offset these impairments, during demolition and land disturbance, portable sanitary facilities will be utilized on site and regularly serviced by contractor following competition of construction wastewater will be directed to existing public sanitary sewer system. G.Threatened or Endangered Species or their Critical Habitat – There are no threatened or endangered species present on the site nor is there any critical habitat being affected by this project. H.Erosion Control Plan – The Erosion and Sediment Control facilities shown on the approvedNext >