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Home My WebLink AboutP_SWPPP_MEADOWVUE_APPROVED_180214_v2 Prepared for: SSHI LLC dba D.R. Horton 12910 Totem Lake Blvd NE, Suite 220 Kirkland, WA 98034 Prepared by: CPH Consultants Matt Hough, PE Bryce Bessette, PE 11431 Willows RD NE, Suite 120 Redmond, WA 98052 December 20, 2017 Stormwater Pollution and Prevention Plan (SWPPP) MeadowVue Subdivision 13833 156th Ave SE City of Renton, Washington PR17000137 B19002102 V2 REVISION Received: 05/31/2019 / aalexander BUILDING DIVISION APPROVED BUILDING DIVISION THIS SET OF APPROVED PLANS MUST BE ON THE JOB AT ALLTIMES DURING CONSTRUCTION. THIS BUILDING IS NOT TO BEOCCUPIED UNTIL AFTER FINAL INSPECTION BY THE RENTONBUILDING DIVISION AND RECEIPT OF CERTIFICATE OF OCCUPANCY. APPROVAL SHALL NOT BE CONSTRUED AS THE AUTHORITY TO VIOLATE OR CANCEL ANY PROVISIONS OF CODES, ORDINANCES,OR OTHER REGULATIONS ENFORCED BY THIS CITY. DATE: 06/10/2019 Stormwater Pollution Prevention Plan For MeadowVue Prepared For SSHI LLC dba D.R. Horton 12910 Totem Lake Blvd. NE, STE 220 Kirkland, WA 98034 P: (425) 821-3400 Owner Developer Operator/Contractor SSHI LLC dba D.R. Horton 12910 Totem Lake Blvd. NE, STE 220 Kirkland, WA 98034 P: (425) 821-3400 SSHI LLC dba D.R. Horton 12910 Totem Lake Blvd. NE, STE 220 Kirkland, WA 98034 P: (425) 821-3400 TBD Project Site Location 13833 156th Ave SE Renton, WA 98056 Certified Erosion and Sediment Control Lead Clint Lucas D.R. Horton 12910 Totem Lake Blvd. NE, 120 Kirkland, WA 98034 P: (425) 821-3400 ext. 5188 F: (425) 229-2802 SWPPP Prepared By CP|H Consultants Jamie Schroeder, P.E. Bryce Bessette, P.E. 11431 Willows Road NE, Suite 120 Redmond, WA 98052 P: (425) 285-2390 SWPPP Preparation Date December 20, 2017 Approximate Project Construction Dates April, 2018 April, 2020 MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 2 Contents 1.0 Introduction ......................................................................................................................... 4 2.0 Site/Project Description ...................................................................................................... 6 2.1 Existing Conditions ......................................................................................................... 6 2.2 Proposed Construction Activities ................................................................................... 7 3.0 Construction Stormwater BMPs ......................................................................................... 9 3.1 The 12 BMP Elements .................................................................................................... 9 3.1.1 Element #1 – Mark Clearing Limits ....................................................................... 9 3.1.2 Element #2 - Establish Construction Access…………………………………… 8 3.1.3 Element #3 – Control Flow Rates ........................................................................... 9 3.1.4 Element #4 – Install Sediment Controls ............................................................... 10 3.1.5 Element #5 – Stabilize Soils ................................................................................. 10 3.1.6 Element #6 – Protect Slopes ................................................................................. 10 3.1.7 Element #7 – Protect Drain Inlets ......................................................................... 11 3.1.8 Element #8 – Stabilize Channels and Outlets ....................................................... 11 3.1.9 Element #9 – Control Pollutants ........................................................................... 11 3.1.10 Element #10 – Control Dewatering ...................................................................... 13 3.1.11 Element #11 – Maintain BMPs ............................................................................. 14 3.1.12 Element #12 – Manage the Project ....................................................................... 14 3.2 Site Specific BMPs ....................................................................................................... 16 4.0 Construction Phasing and BMP Implementation .............................................................. 17 5.0 Pollution Prevention Team ..................................................................................................... 18 5.1 Roles and Responsibilities ............................................................................................ 18 5.2 Team Members ............................................................................................................. 18 6.0 Site Inspections and Monitoring……………………………………………………………..18 6.1 Site Inspection ............................................................................................................... 19 6.1.1 Site Inspection Frequency ..................................................................................... 19 6.1.2 Site Inspection Documentation ............................................................................. 19 6.2 Stormwater Quality Monitoring .................................................................................... 20 6.2.1 Turbidity .............................................................................................................. 20 6.2.2 pH ......................................................................................................................... 20 7.0 Reporting and Recordkeeping........................................................................................... 22 7.1 Recordkeeping .............................................................................................................. 22 7.1.1 Site Log Book ....................................................................................................... 22 7.1.2 Records Retention ................................................................................................. 22 7.1.3 Access to Plans and Records................................................................................. 22 7.1.4 Updating the SWPPP ............................................................................................ 22 7.2 Reporting....................................................................................................................... 23 7.2.1 Discharge Monitoring Reports .............................................................................. 23 7.2.2 Notification of Noncompliance............................................................................. 23 7.2.3 Permit Application and Changes .......................................................................... 23 MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 3 Appendix A – Erosion Control Plans Appendix B – Construction BMPs Appendix C – General Permit Appendix D – Site Inspection Forms (and Site Log) MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 4 1.0 Introduction This Stormwater Pollution Prevention Plan (SWPPP) has been prepared for the MeadowVue single-family development project located in Renton, Washington. MeadowVue proposes to provide 14 new homes, half-street frontage improvements to 154th Ave SE, concrete curb, gutter, and sidewalk along 156th Ave SE, and water and sewer utilities, and storm drainage mitigation facilities. The project is located at 13833 156th Ave SE. within Section 14, Township 23N, Range 5E, W.M. King County, Washington. This site is approximately 4.54 acres. Construction activities will include approximately 1.81 acres of new impervious area in the form of asphalt driveways and drive aisles, new sidewalks, and building roofs. The purpose of this SWPPP is to describe the proposed construction activities and all temporary and permanent erosion and sediment control (TESC) measures, pollution prevention measures, inspection/monitoring activities, and record keeping that will be implemented during the proposed construction project. The objectives of the SWPPP are to: 1. Implement Best Management Practices (BMPs) to prevent erosion and sedimentation, and to identify, reduce, eliminate or prevent stormwater contamination and water pollution from construction activity. 2. Prevent violations of surface water quality, ground water quality, or sediment management standards. 3. Prevent, during the construction phase, adverse water quality impacts including impacts on beneficial uses of the receiving water by controlling peak flow rates and volumes of stormwater runoff at the Permittee’s outfalls and downstream of the outfalls. This SWPPP was prepared using the Ecology SWPPP Template downloaded from the Ecology website and modifying to be specific for this project. This SWPPP was prepared based on the requirements set forth in the Construction Stormwater General Permit and Stormwater Management Manual for Western Washington (SWMMWW 2012). The report is divided into seven main sections with several appendices that include stormwater related reference materials. The topics presented in the each of the main sections are: ▪ Section 1 – INTRODUCTION. This section provides a summary description of the project, and the organization of the SWPPP document. ▪ Section 2 – SITE DESCRIPTION. This section provides a detailed description of the existing site conditions, proposed construction activities, and calculated stormwater flow rates for existing conditions and post–construction conditions. ▪ Section 3 – CONSTRUCTION BMPs. This section provides a detailed description of the BMPs to be implemented based on the 12 required elements of the SWPPP (SWMMWW 2005). MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 5 ▪ Section 4 – CONSTRUCTION PHASING AND BMP IMPLEMENTATION. This section provides a description of the timing of the BMP implementation in relation to the project schedule. ▪ Section 5 – POLLUTION PREVENTION TEAM. This section identifies the appropriate contact names (emergency and non-emergency), monitoring personnel, and the onsite temporary erosion and sedimentation control inspector ▪ Section 6 – INSPECTION AND MONITORING. This section provides a description of the inspection and monitoring requirements such as the parameters of concern to be monitored, sample locations, sample frequencies, and sampling methods for all stormwater discharge locations from the site. ▪ Section 7 – RECORDKEEPING. This section describes the requirements for documentation of the BMP implementation, site inspections, monitoring results, and changes to the implementation of certain BMPs due to site factors experienced during construction. Supporting documentation and standard forms are provided in the following Appendices: Appendix A – Erosion Control Plans Appendix B – Construction BMPs Appendix C – General Permit Appendix D – Site Inspection Forms (and Site Log) MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 6 2.0 Site/Project Description 2.1 Existing Conditions The project area consists of one parcel totaling 4.54 acres (SC tax parcel #: 1463400060). The project is located at 13833 156th Ave SE., Renton, WA 98056 within Section 14, Township 23N, Range 5E, W.M. The site is currently occupied by one single-family residence. Access to the existing home is provided by a gravel driveway that connects to 156th Ave SE. A number of trees of varying type, age, and health conditions exist on the site along with various brushes and grass cover. The soils of the area are characterized generally by the Natural Resource Conservation Services (NRCS) as Alderwood gravelly sandy loam (AgC). Refer to Appendix A of the TIR for a site specific geotechnical report along with the NRCS data. Refer to Figure 3 in the TIR Appendix for a map of the existing site conditions and existing drainage basins. MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 7 2.2 Proposed Construction Activities The proposed development will create a total of 14 single-family homes. In addition, the project will include half-street frontage improvements to 154th Ave SE, including the pavement widening, curb and gutter, sidewalk and landscaping., and concrete curb, gutter, and sidewalk along 156th Ave. The overall project will create and/or replace a total of approximately 1.90 acres of impervious surfaces. The proposed construction activities include site preparation, TESC installation, pavement and sidewalk construction, utility installation, stormwater conveyance system design, and water quality vault excavation. The schedule and phasing of BMPs during construction is provided in Section 4.0. A series of on-site catch basin inlets and underground pipes will collect and convey surface water runoff westerly within the proposed road right-of-way for the majority of the developed site to the combined detention/water quality pond for flow control. Release rates will be controlled by a three orifice control riser, and discharged to an existing ditch located southwest of the site, on the east side of 154th Ave SE right-of-way. A very limited portion of the widened pavements section along 154th Ave SE and 156th Ave SE will be bypassed due to existing topography and grade of the roads. However, to offset this detained and untreated area, the site will be treating runoff from a portion of previously untreated pavement along 156th Ave SE. The developed site is required to provide Basic Water Quality treatment in addition to Level 1 (i.e., basic) flow control per current City of Renton surface water standards. This treatment level is to be achieved by means of a combined detention/water quality pond as shown on Figure 4 and 5 and as described in Section 4 of the TIR – Flow Control and Water Quality Facility Analysis and Design. Stormwater runoff volumes were calculated using the Western Washington Hydrology Model 2012 (WWHM). Water quality treatment was sized using the 2-year treatment volume. The following summarizes details regarding the site conditions: ▪ Total site area: 4.54 acres ▪ Percent impervious area before construction: 2.0 % ▪ Percent impervious area after construction: 41.9 % ▪ Disturbed area during construction: 5.11 acres ▪ Disturbed area that is characterized as impervious (i.e., access roads, staging, parking): 2.24 acres MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 8 ▪ 2-year stormwater runoff peak flow prior to construction (existing): 0.15 cfs ▪ 50-year stormwater runoff peak flow prior to construction (existing): 0.42 cfs ▪ 2-year stormwater runoff peak flow after construction 0.11 cfs ▪ 50-year stormwater runoff peak flow after construction 0.30 cfs MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 9 3.0 Construction Stormwater BMPs 3.1 The 12 BMP Elements 3.1.1 Element #1 – Mark Clearing Limits To protect adjacent properties and to reduce the area of soil exposed to construction, the limits of construction will be clearly marked before land-disturbing activities begin. Trees that are to be preserved, as well as all sensitive areas and their buffers, shall be clearly delineated, both in the field and on the plans. In general, natural vegetation and native topsoil shall be retained in an undisturbed state to the maximum extent possible. The BMPs relevant to marking the clearing limits that will be applied for this project include: • Preserving Natural Vegetation Purpose (BMP C101) • Construction Fence (BMP C103) Tree protection will be provided for all trees to remain, including all trees adjacent to the work and outside the construction limits as noted on the drawings. The upstream boundaries of the site will be lined with construction fencing. 3.1.2 Element #2 – Establish Construction Access Construction access shall be stabilized to minimize the tracking of sediment onto public roads; street sweeping shall be employed to prevent sediment from entering state waters. The specified BMPs related to establishing construction access that will be used on the project include: • Stabilized Construction Entrance (BMP C105) Construction access shall be established to prevent tracking any sediment onto City or State roads or onto the adjacent property. One construction entrance will be provided. 3.1.3 Element #3 – Control Flow Rates In order to protect the properties and waterways downstream of the project site, stormwater discharges from the site will be controlled during construction. Flow rates during construction are proposed to be controlled using the temporary interceptor ditches, rock check dams, and a temporary sediment pond. In general, discharge rates of stormwater from the site will be controlled where increases in impervious area or soil compaction during construction could lead to downstream erosion, or where necessary to meet local agency stormwater discharge requirements. BMPs related to establishing construction access that will be used on the project include: • Temporary Interceptor Ditches (BMP C200) • Rock Check Dams (BMP C207) • Temporary Sediment Trap (BMP C240) MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 10 3.1.4 Element #4 – Install Sediment Controls All stormwater runoff from disturbed areas shall pass through an appropriate sediment removal BMP before leaving the construction site or prior to being discharged to an infiltration facility. The specific BMPs to be used for controlling sediment on this project include: • Outlet Protection (BMP C209) • Storm Drain Inlet Protection (BMP C220) • Silt Fence (BMP C233) Outlet protection, storm drain inlet protection, and silt fence will be placed as shown on the plans or as directed by the City inspector. In addition, sediment will be removed from paved areas in construction work areas manually or using mechanical sweepers, as needed, to minimize tracking of sediments on vehicle tires away from the site and to minimize wash off of sediments from adjacent streets in runoff. Whenever possible, sediment laden water shall be discharged into onsite, relatively level, vegetated areas (BMP C240 paragraph 5, page 4-102). In some cases, sediment discharge in concentrated runoff can be controlled using permanent stormwater BMPs (e.g., infiltration swales, ponds, trenches). Sediment loads can limit the effectiveness of some permanent stormwater BMPs, such as those used for infiltration or biofiltration; however, those BMPs designed to remove solids by settling (wet vaults or detention tanks) can be used during the construction phase. 3.1.5 Element #5 – Stabilize Soils Exposed and unworked soils shall be stabilized with the application of effective BMPs to prevent erosion throughout the life of the project. The specific BMPs for soil stabilization that shall be used on this project include: • Topsoiling (BMP C125) In general, cut and fill slopes will be stabilized as soon as possible and soil stockpiles will be temporarily covered with plastic sheeting. All stockpiled soils shall be stabilized from erosion, protected with sediment trapping measures, and where possible, be located away from storm drain inlets, waterways, and drainage channels. 3.1.6 Element #6 – Protect Slopes All cut and fill slopes will be designed, constructed, and protected in a manner than minimizes erosion. The following specific BMPs will be used to protect slopes for this project: • Temporary and Permanent Seeding (BMP C120) • Pipe Slope Drain (BMP C204) MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 11 Minimal construction is proposed for wet weather season and slope protection can be established with final landscaping. 3.1.7 Element #7 – Protect Drain Inlets All storm drain inlets and culverts made operable during construction shall be protected to prevent unfiltered or untreated water from entering the drainage conveyance system. Storm Drain Inlet Protection (SWMMWW BMP C220) will be implemented for all drainage inlets and culverts that could potentially be impacted by sediment-laden runoff on and near the project site. The following inlet protection measures will be applied on this project: Drop Inlet Protection: • Catch Basin Filters Curb Inlet Protection: • Silt Fence wrapped over inlet • Catch Basin Filters 3.1.8 Element #8 – Stabilize Channels and Outlets Where site runoff is to be conveyed in channels, or discharged to a stream or some other natural drainage point, efforts will be taken to prevent downstream erosion. The specific BMPs for channel and outlet stabilization that shall be used on this project include: • Interceptor Dike and Swale (BMP C200) • Check Dams (BMP C207) • Outlet Protection (BMP C209) • Storm Drain Inlet Protection (BMP C220) • Gravel Filter Berm (BMP C232) • Sediment Trap (BMP C240) All temporary on-site conveyance channels shall be designed, constructed, and stabilized to prevent erosion from the expected peak 10 minute velocity of flow from a Type 1A, 10-year, 24- hour recurrence interval storm for the developed condition. Alternatively, the 10-year, 1-hour peak flow rate indicated by an approved continuous runoff simulation model, increased by a factor of 1.6, shall be used. Stabilization, including armoring material, adequate to prevent erosion of outlets, adjacent stream banks, slopes, and downstream reaches shall be provided at the outlets of all conveyance systems. Refer to the Temporary and Erosion Sediment Control Plans for placement and location of these facilities. 3.1.9 Element #9 – Control Pollutants All pollutants, including waste materials and demolition debris, that occur onsite shall be handled and disposed of in a manner that does not cause contamination of stormwater. If required, BMPs to be implemented to control specific sources of pollutants are discussed below: MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 12 Vehicles, construction equipment, and/or petroleum product storage/dispensing: • All vehicles, equipment, and petroleum product storage/dispensing areas will be inspected regularly to detect any leaks or spills, and to identify maintenance needs to prevent leaks or spills. • On-site fueling tanks and petroleum product storage containers shall include secondary containment. • Spill prevention measures, such as drip pans, will be used when conducting maintenance and repair of vehicles or equipment. • Contaminated surfaces shall be cleaned immediately following any discharge or spill incident. Chemical storage: • Any chemicals stored in the construction areas will conform to the appropriate source control BMPs listed in Volume IV of the Ecology stormwater manual. In Western WA, all chemicals shall have cover, containment, and protection provided on site, per BMP C153 for Material Delivery, Storage and Containment in SWMMWW 2005 • Application of agricultural chemicals, including fertilizers and pesticides, shall be conducted in a manner and at application rates that will not result in loss of chemical to stormwater runoff. Manufacturers’ recommendations for application procedures and rates shall be followed. Demolition: • Dust released from demolished sidewalks, buildings, or structures will be controlled using Dust Control measures (BMP C140). • Storm drain inlets vulnerable to stormwater discharge carrying dust, soil, or debris will be protected using Storm Drain Inlet Protection (BMP C220 as described above for Element 7). • Process water and slurry resulting from sawcutting and surfacing operations will be prevented from entering the waters of the State by implementing Sawcutting and Surfacing Pollution Prevention measures (BMP C152). Concrete and grout: • Process water and slurry resulting from concrete work will be prevented from entering downstream surface waters by implementing Concrete Handling measures (BMP C151). Sanitary wastewater: • Portable sanitation facilities will be firmly secured, regularly maintained, and emptied when necessary. Solid Waste: • Solid waste will be stored in secure, clearly marked containers. MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 13 Other: • Other BMPs will be administered as necessary to address any additional pollutant sources on site. As per the Federal regulations of the Clean Water Act (CWA) and according to Final Rule 40 CFR Part 112, as stated in the National Register, a Spill Prevention, Control, and Countermeasure (SPCC) Plan is required for construction activities. The Contractor shall prepare an SPCC Plan according to the Washington State Department of Transportation (WSDOT) Requirements (see the WSDOT Standard Specifications for Road, Bridge, and Municipal Construction 2004) to address an approach to prevent, respond to, and report spills or releases to the environment that could result from construction activities. This Plan must: • Be well thought out in accordance with good engineering; • Achieve three objectives - prevent spills, contain a spill that occurs, and clean up the spill; • Identify the name, location, owner, and type of facility; • Include the date of initial operation and oil spill history; • Name the designated person responsible; • Show evidence of approval and certification by the person in authority; and • Contain a facility analysis. 3.1.10 Element #10 – Control Dewatering Any potential dewatering water from open cut excavation, tunneling, foundation work, trench, or underground vaults shall be discharged into a controlled conveyance system prior to discharge to a sediment trap or sediment pond. Channels will be stabilized, per Element #8. Clean, non- turbid dewatering water will not be routed through stormwater sediment ponds, and will be discharged directly to downstream systems in a manner that does not cause erosion, flooding, or a violation of State water quality standards in receiving waters. Highly turbid dewatering water from soils known or suspected to be contaminated, or from use of construction equipment, will require additional monitoring and treatment as required for the specific pollutants based on the receiving waters into which the discharge is occurring. Such monitoring is the responsibility of the contractor. The dewatering of soils known to be free of contamination will trigger BMPs to trap sediment and reduce turbidity. At a minimum, geotextile fabric socks/bags/cells will be used to filter this material. Other BMPs to be used for sediment trapping and turbidity reduction include the following: • Concrete Handling (BMP C151) Concrete shall be managed in accordance with City and SWDOT standards. No washing out of concrete trucks shall be permitted on the project site. MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 14 3.1.11 Element #11 – Maintain BMPs All temporary and permanent erosion and sediment control BMPs shall be maintained and repaired as needed to assure continued performance of their intended function. Maintenance and repair shall be conducted in accordance with each particular BMP’s specifications. Visual monitoring of the BMPs will be conducted at least once every calendar week and within 24 hours of any rainfall event that causes a discharge from the site. If the site becomes inactive, and is temporarily stabilized, the inspection frequency will be reduced to once every month. All temporary erosion and sediment control BMPs shall be removed within 30 days after the final site stabilization is achieved or after the temporary BMPs are no longer needed. Trapped sediment shall be removed or stabilized on site. Disturbed soil resulting from removal of BMPs or vegetation shall be permanently stabilized. 3.1.12 Element #12 – Manage the Project Erosion and sediment control BMPs for this project have been designed based on the following principles: • Design the project to fit the existing topography, soils, and drainage patterns. • Emphasize erosion control rather than sediment control. • Minimize the extent and duration of the area exposed. • Keep runoff velocities low. • Retain sediment on site. • Thoroughly monitor site and maintain all ESC measures. • Schedule major earthwork during the dry season. In addition, project management will incorporate the key components listed below: Phasing of Construction: • The construction project is being phased to the extent practicable in order to prevent excessive soil erosion, and, to the maximum extent possible, the transport of sediment from the site during construction. • Revegetation of exposed areas and maintenance of that vegetation shall be an integral part of the clearing activities during each phase of construction, per the Scheduling BMP (C162). Seasonal Work Limitations • From October 1 through April 30, clearing, grading, and other soil disturbing activities shall only be permitted if shown to the satisfaction of the local permitting authority that silt-laden runoff will be prevented from leaving the site through a combination of the following: MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 15 ▪ Site conditions including existing vegetative coverage, slope, soil type, and proximity to receiving waters; and ▪ Limitations on activities and the extent of disturbed areas; and ▪ Proposed erosion and sediment control measures. • Based on the information provided and/or local weather conditions, the local permitting authority may expand or restrict the seasonal limitation on site disturbance. • The following activities are exempt from the seasonal clearing and grading limitations: ▪ Routine maintenance and necessary repair of erosion and sediment control BMPs; ▪ Routine maintenance of public facilities or existing utility structures that do not expose the soil or result in the removal of the vegetative cover to soil; and ▪ Activities where there is 100 percent infiltration of surface water runoff within the site in approved and installed erosion and sediment control facilities. Coordination with Utilities and Other Jurisdictions: • Care has been taken to coordinate with utilities, other construction projects, and the local jurisdiction in preparing this SWPPP and scheduling the construction work. Inspection and Monitoring: • All BMPs shall be inspected, maintained, and repaired as needed to assure continued performance of their intended function. Site inspections shall be conducted by a person who is knowledgeable in the principles and practices of erosion and sediment control. This person has the necessary skills to: ▪ Assess the site conditions and construction activities that could impact the quality of stormwater, and ▪ Assess the effectiveness of erosion and sediment control measures used to control the quality of stormwater discharges. • A Certified Erosion and Sediment Control Lead shall be on-site or on-call at all times per BMP (160). • Whenever inspection and/or monitoring reveals that the BMPs identified in this SWPPP are inadequate, due to the actual discharge of or potential to discharge a significant amount of any pollutant, appropriate BMPs or design changes shall be implemented as soon as possible. Maintaining an Updated Construction SWPPP: • This SWPPP shall be retained on-site or within reasonable access to the site. MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 16 • The SWPPP shall be modified whenever there is a change in the design, construction, operation, or maintenance at the construction site that has, or could have, a significant effect on the discharge of pollutants to waters of the state. • The SWPPP shall be modified if, during inspections or investigations conducted by the owner/operator, or the applicable local or state regulatory authority, it is determined that the SWPPP is ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site. The SWPPP shall be modified as necessary to include additional or modified BMPs designed to correct problems identified. Revisions to the SWPPP shall be completed within seven (7) days following the inspection. 3.2 Site Specific BMPs Site Specific BMPs are shown on the Temporary Erosion and Sediment Control Plan and details in Appendix A. The Certified Erosion and Sediment Control Lead will promptly implement one or more alternate BMP’s after the first sign that existing BMPs are ineffective or failing. MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 17 4.0 Construction Phasing and BMP Implementation The BMP implementation schedule will be driven by the construction schedule. The following provides a sequential list of the proposed construction schedule milestones and the corresponding BMP implementation schedule. The list contains key milestones for construction. The BMP implementation schedule listed below is keyed to proposed phases of the construction project, and reflects differences in BMP installations and inspections that relate to wet season construction. The dry season is considered to be from May 1 to September 30 and the wet season is considered to be from October 1 to April 30. Most earthwork construction is anticipated to be completed during the dry season. • Estimated Construction start date 04 / 11 / 2018 • Mobilize equipment on site: 04 / 12 / 2018 • Mobilize and store all ESC 04 / 01 / 2018 • Install ESC measures: 04 / 02 / 2018 • Install stabilized construction entrance: 04 / 02 / 2018 • Begin clearing and grubbing: 04 / 05 / 2018 • Site grading begins: 04 / 20 / 2018 • Install Sanitary Sewer and Storm Drainage: 04 / 28 / 2018 • Install Water System: 06 / 01 / 2018 • Parking and roadway paving 09 / 01 / 2018 • Final landscaping and planting begins: 09 / 01 / 2018 • Permanent erosion control measures (hydroseeding): 09 / 15 / 2018 • Wet Season Starts: 10 / 01 / 2018 • Estimate of Building Construction finish date: 10 / 01 / 2019 MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 18 5.0 Pollution Prevention Team 5.1 Roles and Responsibilities The pollution prevention team consists of personnel responsible for implementation of the SWPPP, including the following: • Certified Erosion and Sediment Control Lead (CESCL) – primary contractor contact, responsible for site inspections (BMPs, visual monitoring, sampling, etc.); to be called upon in case of failure of any ESC measures. • Resident Engineer – For projects with engineered structures only (sediment ponds/traps, sand filters, etc.): site representative for the owner that is the project's supervising engineer responsible for inspections and issuing instructions and drawings to the contractor's site supervisor or representative. • Emergency Ecology Contact – individual to be contacted at Ecology in case of emergency. Go to the following website to get the name and number for the Ecology contact information: http://www.ecy.wa.gov/org.html. • Emergency Owner Contact – individual that is the site owner or representative of the site owner to be contacted in the case of an emergency. • Non-Emergency Ecology Contact – individual that is the site owner or representative of the site owner than can be contacted if required. • Monitoring Personnel – personnel responsible for conducting water quality monitoring; for most sites this person is also the Certified Erosion and Sediment Control Lead. 5.2 Team Members Names and contact information for those identified as members of the pollution prevention team are provided in the following table. Title Name(s) Phone Number Certified Erosion and Sediment Control Lead (CESCL) Clint Lucas 425-821-3400 ext. 5118 Resident / Project Engineer Jamie Schroeder, PE 425-285-2390 Emergency Ecology Contact Ecology Office 425-649-7000 Emergency Owner Contact Patrick Danner 425-821-3400 Non-Emergency Ecology Contact Jamie Schroeder, PE 425-285-2390 MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 19 6.0 Site Inspections and Monitoring Monitoring includes visual inspection, monitoring for water quality parameters of concern and documentation of the inspection and monitoring findings in a site log book. A site log book will be maintained for all on-site construction activities and will include: ▪ A record of the implementation of the SWPPP and other permit requirements; ▪ Site inspections; and, ▪ Stormwater quality monitoring. For convenience, the inspection form and water quality monitoring forms included in this SWPPP include the required information for the site log book. This SWPPP may function as the site log book if desired, or the forms may be separated and included in a separate site log book. However, if separated, the site log book but must be maintained on-site or within reasonable access to the site and be made available upon request to Ecology or the local jurisdiction. 6.1 Site Inspection All BMPs will be inspected, maintained, and repaired as needed to assure continued performance of their intended function. The inspector will be a Certified Erosion and Sediment Control Lead (CESCL) per BMP C160. The name and contact information for the CESCL is provided in Section 5 of this SWPPP. Site inspection will occur in all areas disturbed by construction activities and at all stormwater discharge points. Stormwater will be examined for the presence of suspended sediment, turbidity, discoloration, and oily sheen. The site inspector will evaluate and document the effectiveness of the installed BMPs and determine if it is necessary to repair or replace any of the BMPs to improve the quality of stormwater discharges. All maintenance and repairs will be documented in the site log book or forms provided in this document. All new BMPs or design changes will be documented in the SWPPP as soon as possible. 6.1.1 Site Inspection Frequency Site inspections will be conducted at least once a week and within 24 hours following any rainfall event which causes a discharge of stormwater from the site by a Certified Erosion and Sediment Control Lead (CESCL). For sites with temporary stabilization measures, the site inspection frequency can be reduced to once every month. 6.1.2 Site Inspection Documentation The site inspector will record each site inspection using the site log inspection forms provided in Appendix C. The site inspection log forms may be separated from this SWPPP document, but will be maintained on-site or within reasonable access to the site and be made available upon request to Ecology or the local jurisdiction. MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 20 6.2 Stormwater Quality Monitoring 6.2.1 Turbidity Sampling Monitoring requirements for the proposed project will include turbidity sampling to monitor site discharges for water quality in compliance with the 2005 Construction Stormwater General Permit (Appendix C). Sampling will be done with a turbidity meter or transparency tube and conducted at all site discharge points at least once per calendar week. Turbidity or transparency monitoring will follow the analytical methodologies described in Section S4 of the 2005 Construction Stormwater General Permit (Appendix C). The key benchmark values that require action include 25 NTU (equivalent to 32 cm transparency) and 250 NTU (equivalent to 6 cm transparency) for turbidity. If the 25 NTU benchmark for turbidity is exceeded, the following steps will be conducted: 1. Ensure all BMPs specified in this SWPPP are installed and functioning as intended. 2. Assess whether additional BMPs should be implemented and make revisions to the SWPPP as necessary. 3. Sample the discharge location daily until the analysis results are less than 25 NTU (turbidity) or greater than 32 cm (transparency). If the turbidity is greater than 25 NTU (or transparency is less than 32 cm) but less than 250 NTU (transparency greater than 6 cm) for more than 3 days, additional treatment BMPs will be implemented within 24 hours of the third consecutive sample that exceeded the benchmark value. Additional treatment BMPs will include, but are not limited to, off-site treatment, infiltration, filtration and chemical treatment. If the 250 NTU benchmark for turbidity (or less than 6 cm transparency) is exceeded at any time, the following steps will be conducted: 1. Notify Ecology by phone within 24 hours of analysis. 2. Continue daily sampling until the turbidity is less than 25 NTU. 3. Initiate additional treatment BMPs such as off-site treatment, infiltration, filtration and chemical treatment within 24 hours of the first 250 NTU exceedance. 4. Implement additional treatment BMPs as soon as possible, but within 7 days of the first 250 NTU exceedance. 5. Describe inspection results and remedial actions that are taken in the site log book and in monthly discharge monitoring reports. 6.2.2 pH Sampling Stormwater runoff will be monitored for pH starting on the first day of any activity that includes more than 40 cubic yards of poured or recycled concrete, or after the application of any “Engineered Soils” such as, cement treated base, cement kiln dust, fly ash, etc. This does not MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 21 include fertilizers. For concrete work, pH monitoring will start the first day concrete is poured and continue until 3 weeks after the last pour. For engineered soils, the pH monitoring period begins when engineered soils are first exposed to precipitation and continue until the area is fully stabilized. Stormwater samples will be collected daily from all points of discharge from the site and measured for pH using a calibrated pH meter, pH test kit, or wide range pH indicator paper. If the measured pH is 8.5 or greater, the following steps will be conducted: 1. Prevent the high pH water from entering storm drains or surface water. 2. Adjust or neutralize the high pH water if necessary using appropriate technology such as CO2 sparging (liquid or dry ice). 3. Contact Ecology if chemical treatment other than CO2 sparging is planned. MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 22 7.0 Reporting and Recordkeeping 7.1 Recordkeeping 7.1.1 Site Log Book A site log book will be maintained for all on-site construction activities and will include: • A record of the implementation of the SWPPP and other permit requirements; • Site inspections; and, • Stormwater quality monitoring. For convenience, the inspection form and water quality monitoring forms included in this SWPPP include the required information for the site log book. 7.1.2 Records Retention Records of all monitoring information (site log book, inspection reports/checklists, etc.), this Stormwater Pollution Prevention Plan, and any other documentation of compliance with permit requirements will be retained during the life of the construction project and for a minimum of three years following the termination of permit coverage in accordance with permit condition S5.C. 7.1.3 Access to Plans and Records The SWPPP, General Permit, Notice of Authorization letter, and Site Log Book will be retained on site or within reasonable access to the site and will be made immediately available upon request to Ecology or the local jurisdiction. A copy of this SWPPP will be provided to Ecology within 14 days of receipt of a written request for the SWPPP from Ecology. Any other information requested by Ecology will be submitted within a reasonable time. A copy of the SWPPP or access to the SWPPP will be provided to the public when requested in writing in accordance with permit condition S5.G. 7.1.4 Updating the SWPPP In accordance with Conditions S3, S4.B, and S9.B.3 of the General Permit, this SWPPP will be modified if the SWPPP is ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site or there has been a change in design, construction, operation, or maintenance at the site that has a significant effect on the discharge, or potential for discharge, of pollutants to the waters of the State. The SWPPP will be modified within seven days of determination based on inspection(s) that additional or modified BMPs are necessary to correct problems identified, and an updated timeline for BMP implementation will be prepared. MeadowVue Stormwater Pollution Prevention Plan CPH Project No. 0035-15-012 December 20, 2017 CP|H CONSULTANTS Page 23 7.2 Reporting 7.2.1 Discharge Monitoring Reports Water quality sampling results will be submitted to Ecology monthly on Discharge Monitoring Report (DMR) forms in accordance with permit condition S5.B. If there was no discharge during a given monitoring period, the form will be submitted with the words “no discharge” entered in place of the monitoring results. If a benchmark was exceeded, a brief summary of inspection results and remedial actions taken will be included. If sampling could not be performed during a monitoring period, a DMR will be submitted with an explanation of why sampling could not be performed. 7.2.2 Notification of Noncompliance If any of the terms and conditions of the permit are not met, and it causes a threat to human health or the environment, the following steps will be taken in accordance with permit section S5.F: 1. Ecology will be immediately notified of the failure to comply. 2. Immediate action will be taken to control the noncompliance issue and to correct the problem. If applicable, sampling and analysis of any noncompliance will be repeated immediately and the results submitted to Ecology within five (5) days of becoming aware of the violation. 3. A detailed written report describing the noncompliance will be submitted to Ecology within five (5) days, unless requested earlier by Ecology. Any time turbidity sampling indicates turbidity is 250 nephelometric turbidity units (NTU) or greater or water transparency is 6 centimeters or less, the Ecology regional office will be notified by phone within 24 hours of analysis as required by permit condition S5.A (see Section 5.0 of this SWPPP for contact information). In accordance with permit condition S4.D.5.b, the Ecology regional office will be notified if chemical treatment other than CO2 sparging is planned for adjustment of high pH water (see Section 5.0 of this SWPPP for contact information). 7.2.3 Permit Application and Changes In accordance with permit condition S2.A, a complete application form will be submitted to Ecology and the appropriate local jurisdiction (if applicable) to be covered by the General Permit. Appendix A – Erosion and Sediment Control Plans 2 4 53 10 14 13 12 11 1 76 8 9 LANE LANE CONSTRUCTION NOTES LEGEND Copyright © 2017 CPH Consultants, LLC. All Rights Reserved. CP H ONSULTANTS 11431 WILLOWS RD. NE, SUITE 120 REDMOND, WA 98052 Phone: (425) 285-2390 | FAX: (425) 285-2389www.cphconsultants.com Site Planning • Civil Engineering Land Use Consulting • Project Management IN COMPLIANCE WITH CITY OF RENTON STANDARDS SEC. 14, TWP 23 N, R5E W.M.MEADOWVUE PLATTED-40-3961LAU17-000106C-17002646PR17-000137MEADOWVUE PLATKnow what'sbelow. before you dig.Call R MEADOWVUE ROADWAY GRADING, DRAINAGE AND SANITARY SEWER IMPROVEMENTS RECOMMENDED CONSTRUCTION SEQUENCE IN FEETPLAN 0 N 30 60 TESC PLAN C1.01SEE C1.03SEE C1.02 R-396106 DEVELOPMENT ENGINEERING IFitz-James 12/27/2017 SURFACE WATER UTILITY rstraka 01/02/2018 Copyright © 2017 CPH Consultants, LLC. All Rights Reserved. CP H ONSULTANTS 11431 WILLOWS RD. NE, SUITE 120 REDMOND, WA 98052 Phone: (425) 285-2390 | FAX: (425) 285-2389www.cphconsultants.com Site Planning • Civil Engineering Land Use Consulting • Project Management IN COMPLIANCE WITH CITY OF RENTON STANDARDS SEC. 14, TWP 23 N, R5E W.M.MEADOWVUE PLATTED-40-3961LAU17-000106C-17002646PR17-000137MEADOWVUE PLATKnow what'sbelow. before you dig.Call R MEADOWVUE ROADWAY GRADING, DRAINAGE AND SANITARY SEWER IMPROVEMENTS ESC DETAILS C1.100 R-396109 DEVELOPMENT ENGINEERING IFitz-James 12/27/2017 SURFACE WATER UTILITY rstraka 01/02/2018 Copyright © 2017 CPH Consultants, LLC. All Rights Reserved. CP H ONSULTANTS 11431 WILLOWS RD. NE, SUITE 120 REDMOND, WA 98052 Phone: (425) 285-2390 | FAX: (425) 285-2389www.cphconsultants.com Site Planning • Civil Engineering Land Use Consulting • Project Management IN COMPLIANCE WITH CITY OF RENTON STANDARDS SEC. 14, TWP 23 N, R5E W.M.MEADOWVUE PLATTED-40-3961LAU17-000106C-17002646PR17-000137MEADOWVUE PLATKnow what'sbelow. before you dig.Call R MEADOWVUE ROADWAY GRADING, DRAINAGE AND SANITARY SEWER IMPROVEMENTS ESC DETAILS C1.101 GRAVEL CONE SEDIMENT POND SUMMARY TABLE FACILITY NO.IMPERVIOUS (AC.)PERVIOUS (AC.)TOTAL (AC.)DESIGN Q10 (CFS) MINIMUM WATER SURFACE AREA (SF)W.S. ELEV. (FT.)BOT. ELEV. (FT.) OUTLET SECTION TEMPORARY SEDIMENT POND TREE PROTECTION FENCE DETAIL CONSTRUCTION FENCING TYPICAL CLEARING LIMITS R-396110 DEVELOPMENT ENGINEERING IFitz-James 12/27/2017 SURFACE WATER UTILITY rstraka 01/02/2018 Appendix B – Construction BMPs The following includes a list of the BMPs to be implemented on the site. The fact sheets provide a descriptive narrative and construction/installation details for each BMP. • Preserving Natural Vegetation Purpose (BMP C101) • High Visibility Fence (BMP C103) • Stabilized Construction Entrance (BMP C105) • Wheel Wash (BMP C106) • Temporary and Permanent Seeding (BMP C120) • Topsoiling (BMP C125) • Dust Control (BMP C140) • Concrete Handling (BMP C151) • Sawcutting and Surfacing Pollution Prevention (BMP C152) • Contractor Erosion and Spill Control Lead (BMP C160) • Scheduling (BMP C162) • Interceptor Dike and Swale (BMP C200) • Pipe Slope Drain (BMP C204) • Check Dams (BMP C207) • Outlet Protection (BMP C209) • Storm Drain Inlet Protection (BMP C220) • Gravel Filter Berm (BMP C232) • Silt Fence (BMP C233) • Sediment Trap (BMP C240) Appendix C – General Permit The approved NPDES General Construction Permit will be provided prior to the beginning of construction. STATE OF WASHINGTON DEPARTMENT OF ECOLOGY PO Box 47600 • Olympia, WA 98504-7600 • 360-407-6000 711 for Washington Relay Service • Persons with a speech disability can call 877-833-6341 August 24, 2017 Alan Paszek SSHI, LLC dba D.R. Horton 12910 Totem Lake Blvd NE Ste 220 Kirkland, WA 98034-2950 RE: Coverage under the Construction Stormwater General Permit Permit number: WAR305741 Site Name: MeadowVue Location: 13833 156th Ave SE Renton, WA County: King Disturbed Acres: 4.54 Dear Mr. Paszek: The Washington State Department of Ecology (Ecology) received your Notice of Intent for coverage under Ecology's Construction Stormwater General Permit (permit). This is your permit coverage letter. Your permit coverage is effective on August 24, 2017. Please retain this permit coverage letter with your permit (enclosed), stormwater pollution prevention plan (SVVPPP), and site log book. These materials are the official record of permit coverage for your site. Please take time to read the entire permit and contact Ecology if you have any questions. Appeal Process You have a right to appeal coverage under the general permit to the Pollution Control Hearing Board (PCHB). Appeals must be filed within 30 days of the date of receipt of this letter. Any appeal is limited to the general permit's applicability or non-applicability to a specific discharger. The appeal process is governed by chapter 43.21B RCW and chapter 371-08 WAC. "Date of receipt" is defined in RCW 43.21B.001 (2). Included is a Focus Sheet describing where and how to appeal this permit coverage. The Focus Sheet may also be accessed here: http://www.ecv.wa.gov/nrourams/wq/permits/index.htrnl. 0 Alan Paszek August 24, 2017 Page 2 Electronic Discharge Monitoring Reports (WQWebDMR) This permit requires that Permittees submit monthly discharge monitoring reports (DMRs) electronically using Ecology's secure online system, WQWebDMR. To sign up for WQWebDMR go to: www.ecy.wa.gov/programs/wq/permits/paris/webdinthtml. If you have questions, contact the portal staff at (360) 407-7097 (Olympia area), or (800) 633-6193/option 3, or email WQWebPortal@ecy.wa.gov. Ecology Field Inspector Assistance If you have questions regarding stormwater management at your construction site, please contact Evan Dobrowslci of Ecology's Northwest Regional Office in Bellevue at evan.dobrowski@ecy.wa.gov, or (425) 649-7276. Questions or Additional Information Ecology is committed to providing assistance. Please review our web page at: www.ecy.wa.gov/programs/wq/stormwater/construction. If you have questions about the construction stormwater general permit, please contact RaChelle Stane at rcla461@ecy.wa.gov or (360) 407-6556. Sincerely, Bill Moore, P.E.. Manager Program Development Services Section Water Quality Program Enclosures Appendix D – Site Inspection Forms (and Site Log) The results of each inspection shall be summarized in an inspection report or checklist that is entered into or attached to the site log book. It is suggested that the inspection report or checklist be included in this appendix to keep monitoring and inspection information in one document, but this is optional. However, it is mandatory that this SWPPP and the site inspection forms be kept onsite at all times during construction, and that inspections be performed and documented as outlined below. At a minimum, each inspection report or checklist shall include: a. Inspection date/times b. Weather information: general conditions during inspection, approximate amount of precipitation since the last inspection, and approximate amount of precipitation within the last 24 hours. c. A summary or list of all BMPs that have been implemented, including observations of all erosion/sediment control structures or practices. d. The following shall be noted: i. locations of BMPs inspected, ii. locations of BMPs that need maintenance, iii. the reason maintenance is needed, iv. locations of BMPs that failed to operate as designed or intended, and v. locations where additional or different BMPs are needed, and the reason(s) why e. A description of stormwater discharged from the site. The presence of suspended sediment, turbid water, discoloration, and/or oil sheen shall be noted, as applicable. f. A description of any water quality monitoring performed during inspection, and the results of that monitoring. g. General comments and notes, including a brief description of any BMP repairs, maintenance or installations made as a result of the inspection. h. A statement that, in the judgment of the person conducting the site inspection, the site is either in compliance or out of compliance with the terms and conditions of the SWPPP and the NPDES permit. If the site inspection indicates that the site is out of compliance, the inspection report shall include a summary of the remedial actions required to bring the site back into compliance, as well as a schedule of implementation. i. Name, title, and signature of person conducting the site inspection; and the following statement: “I certify under penalty of law that this report is true, accurate, and complete, to the best of my knowledge and belief”. When the site inspection indicates that the site is not in compliance with any terms and conditions of the NPDES permit, the Permittee shall take immediate action(s) to: stop, contain, and clean up the unauthorized discharges, or otherwise stop the noncompliance; correct the problem(s); implement appropriate Best Management Practices (BMPs), and/or conduct maintenance of existing BMPs; and achieve compliance with all applicable standards and permit conditions. In addition, if the noncompliance causes a threat to human health or the environment, the Permittee shall comply with the Noncompliance Notification requirements in Special Condition S5.F of the permit. Site Inspection Form General Information Project Name: Inspector Name: Title: CESCL # : Date: Time: Inspection Type: □ After a rain event □ Weekly □ Turbidity/transparency benchmark exceedance □ Other Weather Precipitation Since last inspection In last 24 hours Description of General Site Conditions: Inspection of BMPs Element 1: Mark Clearing Limits BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP Element 2: Establish Construction Access BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP Element 3: Control Flow Rates BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP Element 4: Install Sediment Controls BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP Element 5: Stabilize Soils BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP Element 6: Protect Slopes BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP Element 7: Protect Drain Inlets BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP Element 8: Stabilize Channels and Outlets BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP Element 9: Control Pollutants BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP Element 10: Control Dewatering BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP BMP: Location Inspected Functioning Problem/Corrective Action Y N Y N NIP Stormwater Discharges From the Site Observed? Problem/Corrective Action Y N Location Turbidity Discoloration Sheen Location Turbidity Discoloration Sheen Water Quality Monitoring Was any water quality monitoring conducted? □ Yes □ No If water quality monitoring was conducted, record results here: If water quality monitoring indicated turbidity 250 NTU or greater; or transparency 6 cm or less, was Ecology notified by phone within 24 hrs? □ Yes □ No If Ecology was notified, indicate the date, time, contact name and phone number below: Date: Time: Contact Name: Phone #: General Comments and Notes Include BMP repairs, maintenance, or installations made as a result of the inspection. Were Photos Taken? □ Yes □ No If photos taken, describe photos below: