APPENDIX H POLLUTION PREVENTION AND GOOD HOUSEKEEPING FOR MUNICIPAL OPOERATIONS

Transcription

1 APPENDIX H POLLUTION PREVENTION AND GOOD HOUSEKEEPING FOR MUNICIPAL OPOERATIONS Municipal Facility Inventory Municipal Facility Assessment Municipal Facility Prioritization High Priority Facility SOPs Floor Drain Inventory (High Priority Buildings & Facilities) Storm Drain Map (High Priority Buildings & Facilities) Weekly Visual Inspection Report Form Quarterly Comprehensive Inspection Report Form Quarterly Visual Observation Report Form Water Quality Component of Flood Control Projects Review Form

2

3

4

5

6

7

8

9

10

11

12

13

14 SALT LAKE COUNTY MIDVALE PUBLIC WORKS FACILITY STORMWATER POLLUTION PREVENTION PLAN MARCH 2011 Prepared for: Salt Lake County Public Works Prepared by: Stantec Consulting Services

15 TABLE OF CONTENTS SALT LAKE COUNTY MIDVALE PUBLIC WORKS FACILITY STORMWATER POLLUTION PREVENTION PLAN TABLE OF CONTENTS 1.0 REPORT CERTIFICATION INTRODUCTION POLLUTION PREVENTION TEAM SITE DESCRIPTION FACILITY ACTIVITIES POTENTIAL STORMWATER POLLUTANT SOURCES SITE DRAINAGE SUMMARY OF POTENTIAL POLLUTANT SOURCES INVENTORY OF EXPOSED AREAS SPILLS AND LEAKS SAMPLING DATA MEASURES AND CONTROLS GOOD HOUSEKEEPING PREVENTIVE MAINTENANCE SPILL PREVENTION AND RESPONSE PROCEDURES INSPECTIONS EMPLOYEE TRAINING RECORD KEEPING AND INTERNAL REPORTING PROCEDURES NON-STORMWATER DISCHARGES SEDIMENT AND EROSION CONTROL MANAGEMENT OF RUNOFF COMPREHENSIVE SITE EVALUATION AND INSPECTIONS MONTORING SAMPLE AND DATA COLLECTION SAMPLING PERIODS EXAMINATION REPORTS...19 FIGURES Figure 1 Site Location Map... 4 Figure 2 Site Drainage and Potential Pollutant Sources Map Figure 3 Site Drainage and Potential Polllutant Sources Map SLCo Midvale Public Works Facility SWPPP March 2011 i

16 TABLE OF CONTENTS TABLES Table 1 Pollution Prevention Team... 2 Table 2 Facility Activities... 5 Table 3 Potential Pollutant Sources and Control Measures... 6 Table 4 Inventory of Exposed Materials Table 5 Preventative Measures Table 6 Visual Stormwater Monitoring APPENDICES APPENDIX A SLCo UPDES Stormwater Discharge Permit (No. UTS000001) APPENDIX B Inspection Form APPENDIX C Visual Monitoring Form SLCo Midvale Public Works Facility SWPPP March 2011 ii

17 TABLE OF CONTENTS LIST OF ACRONYMS AST BMPs CERCLA CWA DWQ MS4 OWS RQ SIC SOP SPCC SWPPP SWPPT UPDES UST Aboveground Storage Tank Stormwater Best Management Practices Comprehensive Environmental Response, Compensation and Liability Act Clean Water Act Utah Division of Water Quality Municipal Separate Storm Sewer System Oil Water Separator Reportable Quantities Standard Industrial Classification Standard Operating Procedure Spill Prevention, Control and Countermeasure Stormwater Pollution Prevention Plan Stormwater Pollution Prevention Team Utah Pollutant Discharge Elimination System Underground Storage Tank SLCo Midvale Public Works Facility SWPPP March 2011 iii

18

19 POTENTIAL STORMWATER POLLUTANT SOURCES 2.0 INTRODUCTION This Storm Water Pollution Prevention Plan (SWPPP) has been prepared in accordance with the requirements of the Salt Lake County Utah Pollutant Discharge Elimination System (UPDES) Permit to Discharge Municipal Storm Water (UT000001). The Salt Lake County UPDES Permit requires pollution prevention measures at equipment yards and maintenance shops, and the Salt Lake County Division of Engineering and Flood Control has determined implementation of a SWPPP to encompass all activities at this facility is the best method to meet this permit condition. This SWPPP provides an update to the previous SWPPP for the Midvale Public Works Facility (EWP Engineering, 1999). This SWPPP is designed to address all activities at this facility that have the potential to impact stormwater quality. 2.1 POLLUTION PREVENTION TEAM The stormwater pollution prevention team (SWPPT) is responsible for developing the SWPPP and assisting the facility manager in its implementation, maintenance and revision. The team personnel and responsibilities are provided in Table 1. TABLE 1 Stormwater Pollution Prevention Team INDIVIDUAL Kevyn Smeltzer Team Manager Leon Berrett, P.E. Rich Judson Greg Nuzman Lorna Vogt Engineer Technicians Environmental Technicians RESPONSIBILITIES Division Director, overseeing pollution prevention team Monthly inspection of Operations areas Annual Comprehensive Site Evaluation Monthly inspection of Flood Control areas Monthly inspection of Fleet Maintenance areas Monthly inspection of Sanitation areas Weekly Site Inspections of potential pollutant sources Post-storm inspections of drainage systems Visual Monitoring 2.2 SITE DESCRIPTION The Salt Lake County Public Works Facility consists of four Divisions: Operations, Sanitation, Fleet Management and Flood Control. This facility provides services relating to road construction, fleet maintenance, street maintenance, snow and ice control, waste and recycling collection and storm drain maintenance. These services are provided for multiple agencies including: SLCo Midvale Public Works Facility SWPPP 2 March 2011

20 POTENTIAL STORMWATER POLLUTANT SOURCES Unincorporated Salt Lake County Cottonwood Heights City Holladay City Utah Transit Authority Taylorsville City This facility covers approximately 25 acres of land north of 7200 South and west of Interstate-15 (Figure 1), the majority of which is paved with asphalt. The facility includes administration buildings, public works activities, temporary debris and waste storage, fuel tanks, and parking lots. Various activities require use of materials that are kept onsite, including herbicides, paints, solvents, vehicle fluids, salt, sand, etc. The facility implements and maintains stormwater best management practices (BMPs) that are addressed herein. For the purposes of this SWPPP, activities that have the potential to impact stormwater quality have been identified and evaluated for implementation of best management practices (BMPs). Stormwater BMP implementation and maintenance is the focus of this SWPPP with the intent to minimize the discharge of stormwater pollutants. Given that this facility discharges directly to the Jordan River, stormwater management is of particular importance. Salt Lake County is currently evaluating the design of a new yard. Stormwater considerations will be taken into account during the design phase. Examples include providing cover over material storage areas and installation of treatment BMPs. The design of the new yard is anticipated to occur during This SWPPP will be updated when the new yard is completed. 2.3 FACILITY ACTIVITIES Activities that occur at this facility include those that have the potential to impact stormwater quality. Activities occurring onsite are categorized and presented in Table 2. Further details on these activities and control measures implemented are provided in Chapter 3.0. SLCo Midvale Public Works Facility SWPPP 3 April 2011

21 6960 S 700 W Salt Lake County Public Works Complex 154 West Valley City 201 Salt Lake City South Salt Lake Millcreek 181 Canyon Rim East Millcreek PROJECT LOCATION 266 Kearns Taylorsville 173 Murray 215 West Jordan Midvale Cottonwood West Holladay Cottonwood Heights COMMERCE PARK DR 6825 S Sandy S South Jordan W ALFRED WAY DANIEL WAY V:\52862\active\ \2010\gis\mxd\fig1_site_location_map.mxd February, 2011 Stantec Consulting Services Inc S 700 E, Ste. 300 Salt Lake City, Utah Graphic Scale Tel Feet Fax inch = 200 feet Legend Storm Drain Lines Sanitary Sewer Lines Property Boundary Detention Pond Sanitary Sewer Manhole Oil/Water Separator Storm Drain Inlet Storm Drain Manhole Client/Project Salt Lake County Public Works Complex Midvale, Utah Stormwater Pollution Prevention Plan Project: Notes Aerial Imagery - Utah AGRC High Resolution Orthophotography (HRO) 2009, 1-ft Storm Drain Lines - Salt Lake County Site Location Map Figure 1

22 POTENTIAL STORMWATER POLLUTANT SOURCES TABLE 2 Facility Activities Activity Description Potential Contaminants/Sources Vehicle & Equipment Storage Areas Parking Lots Vehicle fluids Truck Barn Garbage truck fluids "North 40" Parking Vehicle fluids Fueling Areas 2,000 gal AST Biodiesel 4-12,000 gal USTs Gasoline & diesel Material Storage Areas Salt Storage Salt Sand Storage Sand, sediment Outdoor Sand Storage Sand, sediment 5,000 gal AST Used oil gal ASTs New & used oil products gal AST New & used oil products gal AST New & used oil products 3-1,000 gal ASTs New & used oil products Pre-fab Metal Building Roadway paint, curing compounds, miscellaneous supplies "North 40" Storage Supply storage, garbage containers Heavy Duty Shop Vehicle fluids Sump Vehicle fluids Totes & Barrels Paint Small containers Oil, soap, solvents, paint Vehicle & Equipment Cleaning Areas Tar Pot Cleaning Area Tar, solvents < 1,000 gal Tar Pot Sump Crack seal oil Truck & Car Wash Areas Sediment, soaps Sanitation Truck Cleanout Debris from trucks Vehicle & Equipment Maintenance Lube Pit Vaults Vehicle fluids Areas Maintenance Island Vehicle fluids Disposal Areas Evaporation Ponds Vactor & street sweeping wastes AST Aboveground Storage Tank UST Underground Storage Tank SLCo Midvale Public Works Facility SWPPP 5 April 2011

23 POTENTIAL STORMWATER POLLUTANT SOURCES 3.0 POTENTIAL STORMWATER POLLUTANT SOURCES Potential stormwater pollutant sources include indoor and outdoor storage, maintenance activities and other activities that have the potential to impact stormwater quality. All of these areas and activities have the potential to contribute pollutants to stormwater either due to exposure to precipitation or due to connection to the storm drain system. BMPs are necessary at these locations to minimize impacts to stormwater quality. Each source location is described in this section, including implemented stormwater BMPs. 3.1 SITE DRAINAGE Surface drainage is controlled by a series of gutters, catch basins and storm drain lines that flow to the northwest section of the site, into an outfall west of 700 West; conveyance continues through a pipe to the Jordan River. Figures 2 and 3 show the location of the storm drainage system and general direction of stormwater flow within the Salt Lake County Midvale Facility. 3.2 SUMMARY OF POTENTIAL POLLUTANT SOURCES The sources listed below have the potential to impact stormwater quality. These sources were identified by interviews with County employees, site visits, the Hazardous Materials Management Plan and the Spill Prevention, Control and Countermeasure (SPCC) Plan; locations of each are shown in Figures 2 and 3. Each source is discussed in detail, including implemented control measures. Implemented control measures include Good Housekeeping and an SPCC Plan, which are discussed in further detail in Sections 4.1 and 4.3. TABLE 3 Potential Pollutant Sources and Control Measures SITE ID DESCRIPTION DIVISION POTENTIAL POLLUTANT QUANTITY 1 Salt Storage Operations Salt Varies 2 Sand Storage Flood Control Sand Varies 3 Outdoor Sand Storage CONTROL Covered Good Housekeeping Covered Good Housekeeping Flood Control Sand Varies Good Housekeeping 4 Fueling Station Fleet Fuels, Auto Fluids Varies Good Housekeeping 4 AST Fleet Biodiesel 2,000 gal 4 USTs Fleet Gasoline/Diesel 48,000 gal 5 AST Fleet Used Oil 5,000 gal Secondary containment SPCC Plan Secondary containment SPCC Plan Leak detection system Secondary containment SPCC Plan SLCo Midvale Public Works Facility SWPPP 6 March 2011

24 POTENTIAL STORMWATER POLLUTANT SOURCES SITE ID DESCRIPTION DIVISION POTENTIAL POLLUTANT QUANTITY 6 ASTs Fleet Oil Products 1,050 gal 7 AST Fleet Oil Products 1,000 gal 8 Totes & Barrels Operations Pre-fab Metal Building Tar Pot Cleaning Area Tar Pot Cleaning Sump Parking & Storage Areas Operations 12 Lube Pit Vaults Fleet Water-based Roadway Paint Roadway Paint, Curing Compounds, Miscellaneous Supplies Varies Varies Operations Tar, Solvents Varies Operations Crack Seal Oil <1,000 gal All Auto Fluids N/A Oil, Grease, Antifreeze Varies 13 Heavy Duty Shop Fleet Motor Fluids Varies Heavy Duty Shop Sump Truck & Car Wash Areas (2) Maintenance Island CONTROL Covered Secondary containment SPCC Plan Covered Secondary containment SPCC Plan Good Housekeeping Good Housekeeping Concrete vault Vault & area cleaned twice/yr Training Good Housekeeping Pumped as necessary Good Housekeeping Street sweeping Detention pond Concrete vault Cleaned as necessary Covered Good Housekeeping Fleet Oil Products 500 gal Pumped twice/year Fleet & Operations Sediment, Auto Fluids Varies OWS to sanitary system Good Housekeeping Fleet Auto Fluids, Grease Varies Good Housekeeping 16 Truck Barn Sanitation Oil Storage Varies North 40 Parking Lot & Storage Sanitation Truck Cleanout Evaporation Ponds Temporary Waste Material Storage Various Small Containers No discharge Good Housekeeping All Auto Fluids N/A Good Housekeeping Sanitation Debris, Garbage N/A Operations Sediment Varies Good Housekeeping Swept weekly Concrete lined Good Housekeeping Cleaned as necessary Operations Debris Varies Good Housekeeping All Oil, Soap, Solvents Varies Good Housekeeping SLCo Midvale Public Works Facility SWPPP 7 April 2011

25 Road Herbicide/ 9 Paint Pesticide 8 Storage Storage County Surveyor Fueling Islands Car Wash Area 4Bio-Diesel Fueling Area Maintenance Trailer Storage 15 6 Maintenance 7 Island Sanitation "Truck Barn" Snow Removal and Maintenance Vehicle Storage 1 Covered Salt Pile Administration Building Main Shop Materials Testing Lab Sign Shop Lube 12 Pit Vaults Parts Warehouse Electrical Shop Crew Room Auto Paint Body Shop Shop (not used) Dispatch 13 Sherriff Covered Truck Wash Covered Sand Pile 3 Transmission/ Engine Shop Road Paint Shop Tire Storage Tire Shop Heavy Duty Shop 13 Sump 18 Waste Materials Storage 10 Tar Pot Cleaning Area Evaporation 19 Pond Evaporation Pond V:\52862\active\ \2010\gis\mxd\fig1_site_location_map.mxd February, 2011 Stantec Consulting Services Inc S 700 E, Ste. 300 Salt Lake City, Utah Tel Fax Graphic Scale inch = 100 feet Legend Storm Drain Inlet Storm Drain Manhole Sanitary Sewer Manhole Oil/Water Separator Potential Pollutant Source Flow Direction Storm Drain Lines Sanitary Sewer Lines Detention Pond Property Boundary Client/Project Salt Lake County Public Works Complex Midvale, Utah Stormwater Pollution Prevention Plan Project: Notes Aerial Imagery - Utah AGRC High Resolution Orthophotography (HRO) 2009, 1-ft Storm Drain Lines - Salt Lake County Site Drainage Map and Potential Pollutant Sources Map 1 Figure 2

26 6960 S New Administration Bldg V:\52862\active\ \2010\gis\mxd\fig3_site_map2.mxd February, 2011 Stantec Consulting Services Inc S 700 E, Ste. 300 Salt Lake City, Utah Tel Fax Graphic Scale inch = 100 feet Legend Storm Drain Inlet Storm Drain Manhole 17 Sanitary Sewer Manhole Oil/Water Separator Potential Pollutant Source Flow Direction Sanitary Sewer Lines Storm Drain Lines Detention Pond Property Boundary 6825 S Potential Pollutant Sources Site ID Description Division Potential Pollutant Quantity Control 1 Salt Storage Operations Salt Varies Covered Client/Project Salt Lake County Public Works Complex Midvale, Utah Stormwater Pollution Prevention Plan Project: Notes Aerial Imagery - Utah AGRC High Resolution Orthophotography (HRO) 2009, 1-ft Storm Drain Lines - Salt Lake County Good Housekeeping 2 Sand Storage Flood Control Sand Varies Covered Good Housekeeping 3 Outdoor Sand Storage Flood Control Sand Varies Good Housekeeping 4 Fueling Station Fleet Fuels, Auto Fluids Varies Good Housekeeping 4 AST Fleet Biodiesel 2,000 gal Secondary containment SPCC Plan 4 USTs Fleet Gasoline/Diesel 48,000 gal Secondary containment SPCC Plan Leak detection system 5 AST Fleet Used Oil 5,000 gal Secondary containment SPCC Plan 6 ASTs Fleet Oil Products 1,050 gal Covered Secondary containment SPCC Plan 7 AST Fleet Oil Products 1,000 gal Covered 8 Totes & Barrels Operations Water-based Roadway Paint Varies 9 Pre-fab Metal Building Operations Roadway Paint, Varies Curing Compounds, Crew Supplies Secondary containment SPCC Plan Good Housekeeping 10 Tar Pot Cleaning Area Operations Tar, Solvents Varies Concrete vault Vault & area cleaned twice/yr Training 10 Tar Pot Cleaning Sump Operations Crack Seal Oil <1,000 gal Good Housekeeping 11 Parking & Storage Areas Pumped as necessary All Auto Fluids N/A Good Housekeeping Street sweeping Detention pond 12 Lube Pit Vaults Fleet Oil, Grease, Antifreeze Varies Concrete vault Cleaned as necessary 13 Heavy Duty Shop Fleet Motor Fluids Varies Covered Good Housekeeping 13 Heavy Duty Shop Sump Fleet Oil Products 500 gal Pumped twice/year 15 Maintenance Island Fleet Auto Fluids, Grease Varies Good Housekeeping 16 Truck Barn Sanitation Oil Storage Varies No discharge 17 "North 40" Parking Lot & Storage Good Housekeeping All Auto Fluids N/A Good Housekeeping 18 Sanitation Truck Sanitation Sediment & auto fluids N/A Good Housekeeping Cleanout Swept weekly 19 Evaporation Ponds Operations Sediment Varies Concrete lined 20 Temporary Waste Material Storage Various Small Containers Good Housekeeping 14 Truck & Car Wash Fleet & Sediment, Auto Fluids Varies OWS to sanitary system Areas (2) Operations Good Housekeeping Good Housekeeping Cleaned as necessary Operations Debris Varies Good Housekeeping All Oil, Soap, Solvents Varies Good Housekeeping Site Drainage Map and Potential Pollutant Sources Map 2 Figure 3

27 POTENTIAL STORMWATER POLLUTANT SOURCES Salt Storage (1): A permanent, covered salt storage unit is located in the northwest part of the facility. The area near the entrance is sloped towards the dome so that salt residual from the loading area is not directed to the storm drain system. Good housekeeping measures are implemented. Sand Storage (2&3): A permanent sand pile is located in the northwest part of the facility. The sand pile is covered. Good housekeeping measures are implemented. Salt Dome (1) A separate sand storage area is located outside the covered sand storage area. This storage area has minimal to no runoff to the storm drain system. Fueling Station & Tanks (4): The fueling station is comprised of vehicle fueling areas, concrete pads and a fuel dispensing area. Four 12,000 gallon underground storage tanks (USTs) are located in the west end of the facility under the concrete pad of the fueling station, containing gasoline and diesel. Monthly precision tank tightness tests are conducted and the interstitial space between the double-walled fiberglass piping is monitored continuously for leaks with a liquid sensor. The tanks meet current compliance standards with spill containment and overfill prevention devices. One 2,000 gallon aboveground storage tank (AST), containing biodiesel, is also located in this area. This tank is double-walled, bermed and operates under the SPCC plan. Good housekeeping measures are implemented. This area will be redesigned with the plans for the new yard to either minimize exposure to precipitation or provide treatment. Sand Storage (2) Outdoor Sand Storage (3) Above-ground Storage Tanks (5-7): Eight ASTs are located at this facility. One 5,000 gallon double-walled used oil tank is located north of the Parts Warehouse; secondary containment is provided. Five smaller tanks (3 250 gallon, gallon, gallon) are located inside the Heavy Duty Lube Bay; and 2 1,000 gallon tanks are located inside the AST storage shed. These tanks are made of singe-walled steel construction and are filled via a pneumatic diaphragm pump. The tanks can be Fueling Station (4) visually inspected at all times. Interior perimeter concrete berms would contain any release from the ASTs. The spilled fluid would be absorbed by the use of absorbent material and/or the vacuum truck, and disposed in accordance with the SPCC SLCo Midvale Public Works Facility SWPPP 10 April 2011

28 POTENTIAL STORMWATER POLLUTANT SOURCES plan. Totes & Barrels (8): Various containers containing paint are located throughout the facility. These are generally kept inside and routine inspections are conducted. The design of the new yard will consider additional BMPs for these containers. Pre-fab Metal Building (9): This building provides storage for various supplies including paint, curing compounds, and grounds crew and electrical crew supplies. These materials are maintained inside the building and are not exposed to precipitation. Tar Pot Cleaning Area and Sump (10): Tar pots, used by the County to store crack seal oil used on roadways, are cleaned twice per year using diesel fuel as a cleaning solvent. Good housekeeping measures are implemented. The tar pot waste is stored in a holding sump (less than 1,000 gallons) located in the north part of the facility. This sump is pumped on an as-needed basis. Material pumped is disposed of properly. Parking and Storage Areas (11): Parking and storage areas are provided for all four divisions. Surface drainage is directed to catch basins, which convey runoff into the drainage system. Street sweeping is conducted periodically. The parking lot for the new administration building drains to a detention basin, drainage from the detention basin goes to the municipal storm drain system. Lube Pit Vaults (12): The maintenance lube pits are located in the building that services the County vehicles. The pits are concrete lined and do not discharge. These are pumped on an as-needed basis. This material is disposed of properly. Truck Wash Area (14) Heavy Duty Shop & Sump (13): Various containers of motor fluids are kept in the Heavy Duty Shop; no exposure to precipitation. Good housekeeping measures are implemented. A 500 gallon sump is located in this building, and is pumped twice per year. Truck & Car Wash Areas (14): A new truck wash area was constructed in 2008 and consists of four truck bays for washing, with trench drains that drain into a sump that is connected to the sanitary system. The sump is cleaned out on a monthly basis. Another vehicle wash area is provided for cars and is located to the west of the fueling islands. This area drains to the sanitary system. Approximately 2,400 vehicles are washed in these areas every year. Good housekeeping measures are Car Wash Area (14) SLCo Midvale Public Works Facility SWPPP 11 April 2011

29 POTENTIAL STORMWATER POLLUTANT SOURCES implemented. Maintenance Island (15): The maintenance island is located on the south side of the sanitation truck shed. It is not covered; the area drains to the storm drain system. Good housekeeping measures are implemented. This area will be redesigned with the new yard to eliminate this discharge. Truck Barn (16): The truck barn is used for storage, no maintenance is conducted in this building. North 40 Public Works and Fleet Parking and Maintenance Island (15) Storage (17): This area is used for several purposes: vehicle parking, supply storage, and empty, clean garbage containers. Good housekeeping measures are implemented. Sanitation Truck Cleanout (18): Debris is removed from sanitation trucks in the area north of the Heavy Duty Shop and to the east of the main parking lot. The debris is removed from the trucks hoppers and then re-dumped into the truck. Good housekeeping measures are implemented, including weekly sweeping. Evaporation Ponds (19): Two evaporation ponds are located on the northeast corner of the property. These ponds are concrete-lined and are designed to receive vactor and street sweeping truck wastes. These ponds are checked once every two weeks and cleaned as needed; solids are taken to the Salt Lake City/County Landfill. Temporary Waste Material Storage Area (20): Green refuse is stored in this area on a temporary basis. This waste is hauled to the landfill as soon as practicable. Various Small Containers: The facility utilizes various small containers of oil, soap, solvents, and cleaners using portable pumps and other equipment. In addition, two 55-gallon drums of Form Release oil is kept on-site; secondary containment is provided. If any spill occurs, immediate collection with absorbent material will be used. 3.3 INVENTORY OF EXPOSED AREAS Substances related to industrial activities such as process chemicals, raw materials, fuels, pesticides, fertilizers and hazardous substances, may be discharged to a receiving water when exposed to precipitation. The identification of these materials and their associated storage areas helps determine where potential stormwater contamination may occur. Table 4 presents an inventory of exposed materials at the facility. The table also indicates if the existing management controls appear to meet the UPDES permit criteria. The justification for whether or not the permit criteria are met is indicated in the Controlled column as either not exposed, contained, meets other permit requirements, or BMPs implemented. SLCo Midvale Public Works Facility SWPPP 12 April 2011

30 POTENTIAL STORMWATER POLLUTANT SOURCES Table 4 Inventory of Exposed Material Area Quantity of Material Controlled Outdoor Sand Storage Varies Good Housekeeping YES Fueling Area Varies Good Housekeeping SPCC Plan (to be redesigned) NO AST 2,000 gallons Double-walled Tank YES SPCC Plan Totes & Barrels Varies Good Housekeeping YES Tar Pot Cleaning Area Varies Good Housekeeping YES Tar Pot Sump <1,000 gallons Good Housekeeping YES Good Housekeeping YES Parking & Storage Areas Varies New lot drains to detention pond Car Wash Area Varies Sanitary Sewer System YES Maintenance Island Varies Good Housekeeping NO (to be redesigned) North 40 Parking & Storage Varies Good Housekeeping YES Evaporation Ponds Varies Good Housekeeping YES Various Small Containers Varies Good Housekeeping YES UPDES Compliant? 3.4 SPILLS AND LEAKS Documentation of all significant spills or leaks that have occurred within the last three years is an important component to this SWPPP. A significant spill, as defined in EPA Storm Water Management for Industrial Activities: Developing Pollution Prevention Plans and Best Management Practices, includes, but is not limited to:...releases of oil or hazardous substances in excess of reportable quantities (RQ) under Section 311 of the CWA (see 40 CFR and CFR ) or Section 102 of CERCLA (see 40 CFR 302.4). The Midvale Facility currently implements an SPCC Plan. Records of spills are maintained with the SPCC Plan. 3.5 SAMPLING DATA Stormwater sampling is not required at this facility. However, visual examination of stormwater from the outfall is recommended on a quarterly basis. Specific precipitation criteria must be met for this monitoring. Refer to Section 6.0 for detailed monitoring requirements. SLCo Midvale Public Works Facility SWPPP 13 April 2011

31 MEASURES AND CONTROLS 4.0 MEASURES AND CONTROLS Measures and controls identified herein are general BMPs that serve to minimize stormwater pollution to the maximum extent practicable at this facility. BMPs can be both structural and non-structural measures; all with the intent to reduce stormwater pollution. This section provides a more detailed discussion of stormwater BMPs at each potential pollutant source at the facility. The measures described herein are currently implemented on a routine basis. In accordance with the UPDES permit, Standard Operating Procedures (SOPs) will be developed to detail these procedures. In addition, the facility is currently disposing of all old barrels and other liquid storage, no longer in use. The facility is also in the process of designing a new yard, which will include consideration for stormwater BMPs. 4.1 GOOD HOUSEKEEPING Good housekeeping practices maintain and ensure a clean work environment to reduce the possibility of pollutants entering stormwater runoff. Buildings and Facilities: Prevent or reduce the discharge of pollutants to stormwater from buildings and grounds maintenance by washing and cleaning up with as little water as possible. An SOP will be developed to address the use, storage and disposal of chemical used onsite. The SOP will address dumpsters, cleaning, washing, painting and other maintenance activities. Street sweepers clean the impervious areas and vacuum trucks clean the storm drain inlets on a regular basis. Wastes collected in these trucks are taken to the stormwater evaporation ponds. Solids in the evaporation ponds are hauled offsite to the Salt Lake City/County Landfill. Material Storage Areas, Heavy Equipment Storage Areas and Maintenance Areas: Prevent or reduce the discharge of stormwater pollutants from these areas by implementing BMPs such as: covering storage areas, providing secondary containment, use of dry cleanup methods. An SOP will be developed for these areas to ensure the conveyance of stormwater pollutants is prevented. Vehicle and Equipment Areas: Reduce the discharge of pollutants by confining vehicles and equipment to designated areas. An SOP will be developed to address vehicle maintenance and repair activities. Implement management practices to prevent fluid leaks from entering the storm drain system. Management practices may include berming or diking the area, the use of drip pans or absorbents and cleaning pavement surfaces to remove oil and grease. Parking Lots: Minimize the discharge of stormwater pollutants by scheduling routine sweeping and maintenance. Develop an SOP for sweeping and maintenance including cold weather operations and herbicide and pesticide application. SLCo Midvale Public Works Facility SWPPP 14 March 2011

32 MEASURES AND CONTROLS Stormwater Collection and Conveyance System: Minimize the discharge of stormwater pollutants through routine maintenance of the stormwater system. Develop an SOP for regular inspections, cleaning and repair of the stormwater system including catch basins, pipes and structural BMPs. Prioritize stormwater system maintenance for those areas requiring more frequent maintenance. Structural BMPs will be inspected on an annual basis to ensure proper maintenance. Disposal of all waste and wastewater removed from the stormwater system will be documented. Materials removed from the stormwater system will be dewatered in a contained area and liquids will be discharged to the sanitary system. Dewatered solid materials will be disposed of in a landfill. Waste Handling & Disposal: Prevent or minimize the discharge of stormwater pollutants by implementing BMPs such as: providing cover, routine sweeping, use of dry cleanup methods and routine maintenance. An SOP will be developed for the operation of the tar pots and tar pot sump, and operation and maintenance of the evaporation and detention ponds. Fueling Areas: Prevent or reduce the discharge of stormwater pollutants from fueling areas by implementing BMPs such as: covering the area, use of spill and overflow protection and cleanup equipment, use of dry cleanup methods. 4.2 PREVENTIVE MAINTENANCE Preventive maintenance provides for the upkeep of the storm drains and conveyance systems and BMPs to minimize the discharge of stormwater pollutants. A preventive maintenance program is implemented on an annual basis (or more frequently as needed) that incorporates an inspection program. Table 5 Preventative Maintenance STORMWATER INSPECTION MANAGEMENT SCHEDULE Stormwater system Conveyance Annual Catch basins Annual Detention pond Annual Manholes (2) prior to Annual leaving property MAINTENANCE SCHEDULE As needed Annual As needed As needed Oil water separators Monthly or as needed Monthly or as needed ASTs Annual As needed per SPCC Plan 4.3 SPILL PREVENTION AND RESPONSE PROCEDURES According to 40 CFR 112.1(d)(2), a facility is required to have a Spill Prevention, Control and Countermeasure (SPCC) Plan if the facility meets one of the following requirements: SLCo Midvale Public Works Facility SWPPP 15 April 2011

33 MEASURES AND CONTROLS 1. The completely buried storage capacity of the facility is 42,000 gallons or more of oil or 2. The aggregate aboveground storage capacity of the facility is 1,320 gallons or more of oil (only containers of oil with a capacity of 55 gallons or greater are counted). The Midvale Operations Facility has an aggregate aboveground storage capacity over 4,300 gallons, therefore a SPCC Plan is required and is being implemented to document policies and procedures for preventing, controlling and reporting discharges or spills. 4.4 INSPECTIONS Routine visual inspections are performed by a member of the SWPPT annually, to ensure that operations and stormwater control features comply with the SWPPP. The facility is also visually inspected to ensure non-stormwater discharges are not occurring. The inspections will be recorded on a form (see Appendix B) and maintained at the facility for at least three years. If repair or cleaning is needed, the Team Leader will be notified to ensure appropriate actions are taken. These inspections are thorough inspections of the storm drain system to ensure proper operation and identify problem areas. Refer to Chapter 5 for further details. In addition to this annual inspection, the Pollution Prevention Team conducts inspections of the storm drain system including catch basins on an as-needed basis, generally following a rain event. 4.5 EMPLOYEE TRAINING Salt Lake County provides stormwater training for appropriate personnel regarding the components of stormwater regulations, the Municipal Separate Storm Sewer Systems (MS4) permit and the SWPPP. Stormwater training is incorporated into existing safety meeting/training sessions. The training sessions will occur on an annual basis. The training includes: Good housekeeping practices Spill prevention and response procedures Material storage and handling practices New stormwater regulations or pollution prevention measures The training program prepares personnel to effectively minimize and/or eliminate pollutants from entering the storm drain system. The goal of the program is to train personnel to prevent contaminants from entering stormwater and to respond safely and effectively. The employees should also understand how to recognize and report potential stormwater contamination situations. 4.6 RECORD KEEPING AND INTERNAL REPORTING PROCEDURES All records relating to implementation of the SWPPP will be maintained for a minimum of three years. This includes all inspections, monitoring, training, maintenance and incidents. SLCo Midvale Public Works Facility SWPPP 16 April 2011

34 MEASURES AND CONTROLS 4.7 NON-STORMWATER DISCHARGES Currently there are four non-stormwater discharges at this facility. The SWPPT is considering actions to remove or treat these discharges as soon as possible. These are as follows: 1) Fueling Island - will be addressed in design of new yard 2) Maintenance Island - will be addressed in design of new yard 3) Lube Bay: northwest sump - sump will be plugged in ) Engine & Transmission Shop: sink - sink will be removed and capped in SEDIMENT AND EROSION CONTROL FOR NEW CONSTRUCTION This facility does not have any areas that present a high potential for significant soil erosion. Should plans develop for any new construction at this facility, appropriate construction BMPs will be implemented, and a UPDES Construction permit will be obtained as per the DWQ requirements. 4.9 MANAGEMENT OF RUNOFF Storm drainage for the facility area is conveyed via a series of pipes, catch basins and oil/water separators as shown in Figure 2. The system drains the facility area and routes the flow to the northwest part of the site. The stormwater is conveyed via a pipe to the Jordan River. To summarize, the following BMPs are implemented with the intent to reduce pollutants in the discharge of stormwater from this facility: Good housekeeping measures Preventative Maintenance Covered materials and activities Secondary containment SPCC Plan Inspections Visual observations Training These measures are considered sufficient to manage stormwater at this facility. Implementation of additional BMPs will be evaluated during each annual site inspection as discussed in Section 5.0. SLCo Midvale Public Works Facility SWPPP 17 April 2011

35 COMPREHENSIVE SITE EVALUATION AND INSPECTIONS 5.0 COMPREHENSIVE SITE EVALUATION AND INSPECTIONS Annual site inspections are intended to be comprehensive in order to identify any problem areas; the SWPPP Team Leader will perform this inspection. This inspection will provide a basis for evaluating the effectiveness of the SWPPP, and should include: Inspection of stormwater drainage areas for evidence of or the potential for, pollutants entering the drainage system Inspection of equipment needed to implement the SWPPP such as spill response equipment Observation of structural measures, secondary containment, catch basins, etc. for proper operation Evaluation of the effectiveness of stormwater pollution prevention measures and BMPs Revision of the SWPPP to reflect new construction areas, changes in the stormwater drainage system, changes in BMPs, etc. Implementation of changes to the drainage system as required Identification of any incidents of noncompliance Report results of visual observations (refer to Chapter 6) Complete and sign the Inspection Form (Appendix B) Based on the results of this inspection, deficiencies in pollution control structures or procedures will be corrected as soon as practicable. The SWPPP will be revised and updated as necessary to reflect any changes at the facility. SLCo Midvale Public Works Facility SWPPP 18 March 2011

36 MONITORING 6.0 MONITORING Quarterly visual monitoring of stormwater quality should be conducted during a qualifying storm. This monitoring is intended to identify obvious indicators of stormwater pollution, identify the potential source, and implement appropriate BMPs. 6.1 VISUAL MONITORING For the quarterly visual monitoring, observations will be conducted within the first 30 minutes of a qualifying storm event. A qualifying storm event is defined as being greater than 0.1 inches in magnitude that produces runoff and that occurs at least 72 hours from the previously measurable (greater than 0.1 inch rainfall) storm event. The examinations will be conducted on runoff in the manholes prior to leaving the property, and include the following: TABLE 6 Visual Stormwater Monitoring color floating solids foam odor settled solids oil sheen clarity suspended solids other If adverse conditions do not allow for the collection of stormwater samples, this will be documented and maintained with the SWPPP. 6.2 VISUAL MONITORING PERIODS Visual examinations of stormwater quality will be conducted during the following periods: January March July September April June October - December 6.3 EXAMINATION REPORTS Results of visual observations will be documented using the form in Appendix C. Details regarding the storm event, examinations, nature of the discharge (i.e., runoff or snow melt), will be recorded. These reports must be kept onsite with the SWPPP. SLCo Midvale Public Works Facility SWPPP 19 March 2011

37 APPENDIX B INSPECTION FORM

38 Comprehensive Site Compliance Evaluation SLCo Public Works Facility Storm Water Pollution Prevention Plan Date: Date of Previous Evaluation: Name(s): I. VISUAL INSPECTION Check drainage agree for evidence of pollutants entering the storm drainage system and for the general physical condition of the controls Evidence of Release of pollutants Into Storm Drainage Area Description Additional Information General Condition System Comment (Follow Up) Good Poor Yes No Salt Storage Salt Sand Storage Outdoor Sand Storage Fueling Station Sand Gasoline/Diesel AST Biodiesel 2,000 gallon USTs Gasoline/Diesel 4-12,000 gallon tanks AST Used Oil 5,000 gallon tank ASTs Oil Products gallon tanks gallon tank gallon tank ASTs Oil Products 2-1,000 gallon tanks Totes & Barrels Sand Water-based Roadway Paint Pre-fab Metal Building Tar Pot Cleaning Area Tar Pot Sump Parking & Storage Area Lube Pit Vaults Heavy Duty Shop Heavy Duty Shop Sump Truck & Car Wash Areas Maintenance Island Truck Barn "North 40" Parking Lot & Storage Sanitation Truck Cleanout Evaporation Ponds Temporary Wast Material Storage Various Small Containers Roadway paint, Curing compounds, Crew supplies Tar & Solvents Crack Seal Oil Auto Fluids Oil, Grease, Antifreeze Motor Fluids Oil Products Sediment & Auto Fluids Auto Fluids & Grease Oil Storage Auto Fluids Sediment & Auto Fluids Street sweeping & vactor truck waste Debris Oil, Soap, Solvents 2 ponds 1 of 2

39 Comprehensive Site Compliance Evaluation SLCo Public Works Facility Storm Water Pollution Prevention Plan Date: Date of Previous Evaluation: Name(s): II. REPORTABLE SPILLS Any reportable spills / releases that allowed pollutants to enter the storm drainage system? Yes No III. BMP PRACTICES IMPLEMENTED Good Housekeeping Preventative Maintenance Spill Prevention & Response Visual Monitoring Visual Inspection Materials Management Annual Employee Training Record Keeping Procedures IV. PLAN EVALUATION Are revisions to the Plan required to reflect: New construction? Drainage System Improvements / Additions? New Facilities / Storage Tanks? If "yes", explain: V. PLAN NON-COMPLIANCE INCIDENTS Were there any Plan non-compliance incidents? If "yes", explain: No Yes VI. OTHER COMMENTS 2 of 2

40 APPENDIX C VISUAL OBSERVATION FORM

41 VISUAL MONITORING REQUIREMENTS Examinations shall be made of samples collected within the first 30 minutes (or as soon thereafter as practical, but not to exceed one hour) of when the runoff or snowmelt begins discharging. The examinations shall document observations of color, odor, clarity, floating solids, settled solids, suspended solids, foam, oil sheen, and other obvious indicators of stormwater pollution. The examination must be conducted in a well lit area. No analytical tests are required to be performed on the samples. All such samples shall be collected from the discharge resulting from a storm event that is greater than 0.1 inches in magnitude and that occurs at least 72 hours from the previously measurable (greater than 0.1 inch rainfall) storm event. Where practicable the same individual will carry out the collection and examination of discharges for the life of the permit. Name of Inspector: Date: Magnitude of this event in Days since previous measurable storm event: Magnitude of previous event: in COLOR (Circle those that apply): 1. Identification of Color Black Dark Grey Medium Grey Light Grey Dark Chocolate Brown Medium Brown Light Brown Tan Yellow Green Other 2. Intensity of Color Very intense Prominent Moderately Perceptible Hardly Perceptible CLARITY (Circle): Totally Opaque Slightly Translucent Translucent Nearly Transparent Transparent ODOR (Circle those that apply): Diesel Gasoline Petroleum Solvent Musty Sewage Chlorine Rotten Egg Sulfur No Odor Noxious Other SOLIDS Floating Solids: (Description) Suspended and Settled Solids: (Description)

42 FOAM, OIL SHEEN, OR OTHER OBVIOUS INDICATORS OF POLLUTION Comments:

43

44

45

46

47

48 Signature Sheet for Weekly/Monthly Storm water Inspections Facility: SOP or SWPPP# Date Storm water issues/notes Resolved Initials

49 Signature Sheet for Weekly/Monthly Storm water Inspections Facility: SOP or SWPPP# Date Storm water issues/notes Resolved Initials

50

51

52

53

54

55

56

57