Stormwater Pollution Prevention Plan for Fire Station 91. City of Mercer Island

Transcription

1 Stormwater Pollution Prevention Plan for Fire Station 91 City of Mercer Island June 2009

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3 Stormwater Pollution Prevention Plan for Fire Station 91 Prepared for: City of Mercer Island th Avenue SE Mercer Island, WA Prepared by: R. W. Beck, Inc Fourth Avenue, Suite 2500 Seattle, WA June 2009

4 This report has been prepared for the use of the client for the specific purposes identified in the report. The conclusions, observations and recommendations contained herein attributed to R. W. Beck, Inc. (R. W. Beck) constitute the opinions of R. W. Beck. To the extent that statements, information and opinions provided by the client or others have been used in the preparation of this report, R. W. Beck has relied upon the same to be accurate, and for which no assurances are intended and no representations or warranties are made. R. W. Beck makes no certification and gives no assurances except as explicitly set forth in this report. Copyright 2009, R. W. Beck, Inc. All rights reserved.

5 SWPPP for Fire Station 91 City of Mercer Island Table of Contents Introduction...1 Pollution Prevention Team...2 Site Assessment...5 Fueling Station...6 Washing Area...6 Administrative Requirements...7 Required Signatures...7 Plan Retention and Availability...7 Required Plan Modifications...7 Non-Compliance Notification...7 Maintenance of Records...8 Best Management Practices...9 Good Housekeeping...9 Preventative Maintenance...9 Recommended Additional Source Controls...10 Employee Training Program...13 Frequency...13 Employee Training Program Topics...13 Good Housekeeping...13 Spill Prevention and Response...13 Spill Prevention and Emergency Cleanup Plan...14 Purpose and General Information...14 Existing Spill Prevention and Emergency Cleanup Plan...14 Spill Prevention and Proposed Measures...14 Likely Spill Locations...14 Leak Detection...14 Inspections...14 Spill Kit...15 Monitoring Plan...16 Annual Wet Weather Inspection...16 File: /

6 Table of Contents Annual Dry Weather Inspection...17 Reporting...17 Records Retention...18 Appendices A Site Assessment B Inspection Forms C Standard Operating Guidelines for Fire Station 91 iv R. W. Beck Final SWPPP - Fire Station 91.doc 6/9/09

7 Stormwater Pollution Prevention Plan for Fire Station 91 Introduction The City of Mercer Island is covered by the Western Washington Phase II Municipal Stormwater Permit, issued by the Washington State Department of Ecology (Ecology) in This permit is issued as part of the National Pollutant Discharge Elimination System (NPDES) Phase II program, which in the state of Washington is regulated by Ecology. As a Phase II community, Mercer Island must prepare Stormwater Pollution Prevention Plans (SWPPPs) for all heavy equipment maintenance (including fueling activities) or storage yards, and material storage facilities owned or operated by the City. Fire Station 91 includes a fueling station for fire engines and therefore the City has developed this SWPPP to fulfill the NPDES Phase II requirement. The objectives of a SWPPP are: To implement and maintain Best Management Practices (BMPs) that identify, reduce, eliminate, and/or prevent the discharge of stormwater pollutants. To prevent violations of surface water quality, groundwater quality, and sediment management standards. To eliminate the discharges of unpermitted process wastewater, domestic wastewater, and other illicit discharges to stormwater drainage systems. Mercer Island is a community located in Lake Washington between the cities of Seattle and Bellevue, and is traversed by Interstate 90 at its northern end. The Mercer Island Fire Department serves this nearly 4,000-acre island by providing local and regional fire prevention, suppression, emergency medical services, rescue, disaster preparedness, and community education. The fire department provides these services from two facilities, Station 91 and Station 92. This SWPPP pertains to Fire Station 91, which provides fueling for all fire engines as well as some other city vehicles. This 16,600-square-foot facility is staffed with a Battalion Chief, a Lieutenant, and two firefighters, and equipped with three fire engines (engines 91, 93 and 94) and a truck. Fire Station 91 is located at th Avenue SE. Figure 1 presents a facility site plan, which includes one building, parking areas, ancillary fire station equipment such as an underground vault for training, and the fueling station. The parking area adjacent to 78th Avenue SE in front of the truck bay doors is sometimes used for washing the engines and trucks. Runoff is generally collected through catch basins, paved swales, or trench drains and conveyed by underground storm drains to a catch basin at the west side of the facility. From this catch basin, the storm drain system conveys runoff to an 18-inch-diameter public pipe system along 78th Avenue SE. This pipe system extends north, joining a larger trunk drainage system, and ultimately reaches Lake Washington. File: /

8 Stormwater Pollution Prevention Plan for Fire Station 91 Pollution Prevention Team The following people will be involved in implementing the SWPPP. Each of these individuals is authorized to sign discharge certification forms, and they may delegate the monitoring tasks to any individual who has been properly trained according to the Employee Training Program in this document. Responsible Official: Team Leader: Chris Tubbs, Fire Chief Steve Heitman, Deputy Fire Chief Office Phone: (206) Responsibilities: Direct, coordinate, and ensure that BMPs are implemented; schedule semiannual compliance evaluations; review and revise SWPPP when needed; budget for maintenance of existing BMP features; request construction of new or major modification of existing BMPs, if needed. Site Manager: To be assigned by SWPPP Team Leader Responsibilities: Coordinate and implement Operational and Source Control BMPs for the facility; participate in compliance evaluations; report problems, needed maintenance, or degradation of BMPs to Team Leader. Maintenance and Source Control Coordinator: To be assigned by SWPPP Team Leader Responsibilities: Participate in compliance evaluations; provide advice and technical support for plan revisions; handle maintenance of BMPs. Monitoring Coordinator: To be assigned by SWPPP Team Leader Responsibilities: Conduct site monitoring activities. 2 R. W. Beck Final SWPPP - Fire Station 91.doc 6/9/09

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11 Stormwater Pollution Prevention Plan for Fire Station 91 Site Assessment Fire Station 91, its operations, and its site plans were examined to assess the potential of site materials and operational practices to pollute stormwater and consequently impact receiving waters. This assessment included the development of a Facility Site Plan (Figure 1) showing existing features relevant to stormwater pollution prevention. The assessment also includes an inventory of on-site materials and their pollution potential (Form A-1 in Appendix A); a list of previous spills of materials (Form A-2 in Appendix A); a description of industrial activities and their pollution potential (Form A-3 in Appendix A); and an inspection of the site for the presence of non-stormwater discharges from sanitary sewers or of industrial wastewater (Form A-4 in Appendix A). Blank forms for future reassessments are provided in Appendix B. Stormwater runoff at the fire station site is collected and conveyed through a drainage system consisting of multiple catch basins and underground pipes as well as a trench drain and an asphalt swale, all shown on Figure 1. The back (or eastern) area of the station provides parking spaces, contains a fueling station, and is sometimes used for training. Runoff in this area is captured by either catch basins at the far east end, or an asphalt swale located closer to the building, both of which convey flow south to a storm drain at the southern side of the site. This storm drain conveys flow west to join with a pipe system on the west side of the building. The front of the fire station includes a paved area where trucks and fire engines are washed periodically. The front area is sloped toward a trench drain which collects runoff and directs it to a catch basin (labeled CB 1 on Figure 1), from which water is conveyed west to the 18-inch storm pipe within 78th Avenue SE. CB 1 receives all runoff from the site and is therefore its only discharge point, with one possible exception, described in the following paragraph. Figure 1 also shows the existence of an existing catch basin (CB 2) just west of the fueling station, and abandoned pipes under the fire station building. The outlet of CB 2 could not be located. The City performed dye testing and smoke testing, neither of which was helpful in determining how it was connected. Past records are unclear, but it is suspected that a past storm drain was plugged and abandoned when the fire station was expanded around It is further suspected that CB 2 is somehow connected to the abandoned pipe. If so, it is possible that some runoff near the fuel station could reach this pipe, and if the outlet is plugged the runoff would eventually infiltrate into the ground. Therefore, this creates a potential discharge of stormwater that may have a higher potential of contaminants from fueling operations. Pollutants from Fire Station 91 that may result from site activities include fuel, oil/grease, and metals. Therefore, current site conditions create a potential for chemicals and metals to be washed off by stormwater runoff into the storm sewer on 78th Avenue SE. The source areas for such pollutants are the fuel station in the parking lot and the washing area. Several of the site catch basins (including CB 1) are equipped with an inverted tee that allows some capture of floatables and provides some spill protection. File: / R. W. Beck 5

12 Stormwater Pollution Prevention Plan for Fire Station 91 Fueling Station Fire engines and trucks are fueled in the parking lot of Fire Station 91. During this process fuel may drip onto the asphalt surface. A site visit did not reveal any notable staining, a sign of good housekeeping and cleaning practices. That, however, does not overrule the possibility of fuel spilling into the stormwater system. The site grading is such that runoff from the fueling area would flow south and west to either CB 2 or the asphalt swale located about 10 to 20 feet away from the refueling island. As noted previously, the runoff entering CB 2 may infiltrate into the ground. ` Washing Area Fire engines and trucks are washed in front of the fire station. During this process, washwater may have high levels of oil, grease, suspended solids, and metals. Oil/grease could leak from trucks, while metals such as copper and lead could be washed from vehicle bodies. Since the washing area is sloped toward the drainage swale, such pollutants have the potential to end up in the trench drain and eventually in the public storm system along 78th Avenue SE. CB 1 has a downturn elbow, which helps to control the accumulation of surface grease in the catch basin and facilitates its collection. This contributes to abating the discharge of greasy pollutants without necessarily eliminating it. 6 R. W. Beck Final SWPPP - Fire Station 91.doc 6/9/09

13 Stormwater Pollution Prevention Plan for Fire Station 91 Administrative Requirements Required Signatures This SWPPP and certification statements (i.e., non-stormwater discharge) must be signed by a duly authorized representative of the facility. Subsequent modifications to this SWPPP and certification statements must also be signed as described above. Plan Retention and Availability This SWPPP shall be retained on-site or within reasonable access to the site. It shall be made available to the Department of Ecology upon request, but is not submitted to Ecology. The plan shall also be submitted to the municipal operator of the storm sewer system. Required Plan Modifications If Ecology notifies the City of Mercer Island that the SWPPP does not meet one or more of the minimum requirements of the Stormwater Permit, the City shall submit a plan for modification to Ecology within 30 days of such notice. The SWPPP shall be modified accordingly whenever there is a change in design, construction, operations, or maintenance that causes the SWPPP to be less effective in controlling pollutants. Modifications need not be submitted to Ecology. Whenever an inspection reveals that the description of potential pollutant sources or the pollution prevention measures and controls identified in the SWPPP are inadequate, the SWPPP shall be modified, as appropriate, within two weeks of such inspection. Modifications shall be implemented in a timely manner. Modifications need not be submitted to Ecology. Non-Compliance Notification If conditions specified in the Permit are not complied with, or will not be complied with, the City shall notify the Department of Ecology s Northwest Regional Office ( ). The City shall provide: A description of the nature and cause of non-compliance, including the quantity and quality of any unauthorized waste discharges. The period of non-compliance, including exact dates and times and/or the anticipated time when compliance will be achieved. The steps taken, or to be taken, to reduce, eliminate, and prevent recurrence of the non-compliance. In addition, immediate action shall be taken as expeditiously as practicable, to stop, contain, and clean up any discharge or spill and all reasonable steps shall be taken to minimize any adverse impacts to waters of the state and correct the problem. Ecology shall be notified by telephone so that an investigation can be made to evaluate any File: / R. W. Beck 7

14 Stormwater Pollution Prevention Plan for Fire Station 91 resulting impacts, the corrective actions taken, and to determine if additional action should be taken. In the case of any discharge which could constitute a threat to human health, welfare, or the environment, the City shall notify the Department of Ecology s Northwest Regional Office within 24 hours from the time the City becomes aware of the circumstances. If this information is provided orally, a written submission covering these points shall be provided within five days after knowledge of the circumstances, unless Ecology waives or extends this requirement or extends this requirement on a case-by-case basis. Maintenance of Records All records will be kept in this notebook using the forms provided in Appendix B for: Storage of new materials constituting a pollution hazard (Form A-1. Material Inventory) Spills of significant materials (e.g., oil, antifreeze, leachate, other pollutants) (Form A-2. List of Significant Spills and Leaks) Areas associated with industrial activity (Form A-3. Areas Associated with Industrial Activity) Non-stormwater discharge dry weather inspections (Form A-4. Non-Stormwater Discharge) Wet weather runoff inspections (Form B-1. Wet Weather Inspection) Preventative maintenance inspections (Form B-2. Preventative Maintenance Inspection) Training achievements (Form B-3. Training Achievements) Monitoring results (Form B-4. Sampling Event Log) Changes in Stormwater Pollution Prevention Plan All records are to be dated and kept in reverse chronological order. 8 R. W. Beck Final SWPPP - Fire Station 91.doc 6/9/09

15 Stormwater Pollution Prevention Plan for Fire Station 91 Best Management Practices Good Housekeeping Good housekeeping practices are important for reducing or eliminating pollutants in stormwater runoff. Good housekeeping involves maintaining a clean and orderly work environment. Keeping all areas clean will prevent the spread of pollutant-containing material. Extra attention to surfaces draining to storm sewers can significantly reduce pollutant washoff. An orderly work environment will reduce the chance for inadvertent spills. The following practices should be employed on a daily basis: Sweep up trash and litter at least daily from the driveway, washing area, and parking lot. Promptly clean spills from oils, solvents, and fuels from paved surfaces. Clean oils, debris, and sludge from catch basins, oil-water separators, and conveyance systems to prevent the contamination of stormwater. Watch for leaks or spills from vehicles and clean them up as detailed in the Spill Prevention and Emergency Cleanup Plan. Preventative Maintenance Preventative maintenance is essential for maintaining the performance of BMPs over time. Certain maintenance procedures should be performed on a regimented schedule. Regular inspections of the entire facility stormwater system should be performed in order to determine the need for non-routine maintenance, which consists primarily of removing accumulated sediment and organic debris from catch basins, paved swales, and oil-water separators. Regular vactoring of catch basins and sediment removal from swales will maintain maximum sediment retention capacity, prevent washout of sediment, and limit dissolving of pollutants into water. Routine preventative maintenance inspections of stormwater system features should be carried out during the wet weather inspection on a quarterly basis (see Monitoring Plan). More frequent inspections are recommended so that problems may be detected, particularly during the wet season. Observations from the quarterly inspections should be recorded on the Preventative Maintenance Inspection Form (Form B-2 in Appendix B). Conditions of the following features should be recorded: CB 1 (discharge to 78th Avenue SE) Trench drains and asphalt swales All paved surfaces for evidence of pollutants (e.g. oil stains, discoloration), in particular, around the fueling area Catch basins and oil-water separators should be vactored twice annually or as needed, and especially after major storms. File: / R. W. Beck 9

16 Stormwater Pollution Prevention Plan for Fire Station 91 Additionally, the following are additional preventive BMPs applicable to fire stations: Check fire engines and containers regularly for signs of deterioration. Use drip pans to collect leaks and spills from fire engines and trucks if parked outside for extended periods. Train employees on the proper use of fuel dispensers; post signs in accordance with the Uniform Fire Code (e.g., No Topping Off signs); and make sure that the automatic shutoff on the fuel nozzle is functioning properly. Providing for proper disposal of waste oil and fuel. Recommended Additional Source Controls Source control measures minimize the opportunity for pollutants to enter the stormwater system. Source controls are often the most effective methods for water quality protection. The above source controls, as well as measures described in the Spill prevention and Emergency Cleanup section of this SWPPP are considered the minimum necessary to comply with the NPDES requirements. Following are some recommended future actions the City should consider as funding allows. These measures generally reflect requirements that would apply to a new facility being built today. Suggested controls for the potential pollutants from the fueling station include: Adding a roof or canopy to the fueling island to prevent direct contact of precipitation with the spill containment pad. The canopy should at minimum cover the spill containment pad and preferably extend 3 feet beyond the pad to reduce the introduction of windblown rain. Sloping the concrete pad around the island toward one collection point. The existing pad at Fire Station 91 is made out of concrete and is sloped toward its southwestern end (toward the asphalt swale). Figure 2 provides a typical representation of a cover, pad, and drain for a refueling island. A drain may not be necessary for a retrofit application. 10 R. W. Beck Final SWPPP - Fire Station 91.doc 6/9/09

17 Stormwater Pollution Prevention Plan for Fire Station 91 Source: Washington State Department of Ecology, Publication Figure 2. Covered Fuel Island Providing a berm around the fueling island raised to a minimum of 4 inches to prevent the runoff of spilled liquids and run-on of stormwater from the surrounding area. The berm will also help isolate spills if the drains around the pad are sloped to one corner. Until such improvements take place, the City could minimize risks by ensuring overflow protection during fuel delivery from tank trucks, covering nearby storm drains during the filling process, and/or using drip pans under all hose connections. Suggested improvements to reduce the potential for runoff from washing fire trucks include the following: Implementing a new drainage system to direct washwater to a sanitary sewer rather than the storm sewer along 78th Avenue SE. This system could use valves to direct runoff to the storm sewer when no washing is taking place and to the sanitary sewer when trucks and fire engines are being washed. Figure 3 shows a schematic of such a system. Under normal conditions, valve A would be open and water would be discharged to the 78th Avenue SE storm sewer. During washing, valve A would be closed and valve B would be opened to discharge washwater to the sanitary sewer. File: / R. W. Beck 11

18 Stormwater Pollution Prevention Plan for Fire Station 91 Until such improvements take place, the City could minimize risks by limiting washing activities to dry periods, temporarily plugging the outlet from CB 1, and using portable sump pumps to pump washwater to the sanitary sewer system. Figure 3. Valves Needed to Direct Washwater to Sanitary Sewer Suggested investigations for CB 2 and its discharge include: Because the City has been unable to determine (through dye testing and smoke testing) the discharge location from this catch basin, it is recommended that further investigations be conducted to determine how this system is drained. This could include vactoring out standing water and TVing outlet piping or localized excavation. Should it be confirmed that the catch basin drains to the abandoned storm drain underneath the fire station building, it is recommended that this be corrected. Options to consider include removing/abandoning the catch basin and regrading the area so it all drains to the paved swale or re-piping it to an existing catch basin to the south. 12 R. W. Beck Final SWPPP - Fire Station 91.doc 6/9/09

19 Stormwater Pollution Prevention Plan for Fire Station 91 Employee Training Program Frequency Perform in-depth pollution prevention training for new employees within 30 days of hiring, and a refresher briefing held annually addressing: Good housekeeping. Spill prevention and response procedures. Materials handling and storage. Announce any changes to the plan. Announce any new management practices related to stormwater pollution prevention. Employee Training Program Topics Good Housekeeping Review and demonstrate basic cleanup procedures. Clearly indicate proper disposal locations. Be sure employees know where routine cleanup equipment is located. Spill Prevention and Response Clearly identify potential spill areas and drainage routes Post warning signs in spill areas with emergency contacts and telephone numbers Drill on spill clean-up procedures Identify the locations of spill clean-up equipment and the persons responsible for operation of the equipment Instruct mobile refueling drivers to always check automatic shut-off functioning File: / R. W. Beck 13

20 Stormwater Pollution Prevention Plan for Fire Station 91 Spill Prevention and Emergency Cleanup Plan Purpose and General Information This plan provides for measures and procedures to prevent or minimize contamination of stormwater runoff from Fire Station 91 during normal operations and in the event of spills. Fire Station 91 has stormwater drainage features which have inverted tees in catch basins. These provide limited treatment or spill protection and are not effective at treating or containing large amounts of pollutants or spills. Hence, special measures must be taken in the event of a spill. Existing Spill Prevention and Emergency Cleanup Plan Fire Station 91 has a Standard Operating Guideline that is used for not only gas and oil spills, but also for any possible hazardous materials calls that the station is dispatched on. If an off-site spill is too large for the station to handle, Unit 77 from the Seattle Fire Department, which is a 24/7 hazardous response unit, is contacted. The Department of Ecology is also notified on significant events. Further measures and details are included in the Standard Operating Guidelines for Fire Station 91, provided in Appendix C. Spill Prevention and Proposed Measures Likely Spill Locations Spills are most likely to occur in the vicinity of the fueling station. A major spill is not likely to occur at the washing area (but this does not exclude the possibility of pollutants being directed to the storm sewer by washwater). Leak Detection The station does not have any leak detection systems installed. Inspections One of the most effective spill prevention measures is the performance of routine visual inspections to detect potential spill situations. These shall be done on a daily basis during the course of manning the station at opening and during routine operations. Items to be monitored are: Fueling Station: This area drains via pavement and sloping to the catch basin and paved swale on the west and southwest side of the concrete pad. Inspect for oil stains or floating water in the catch basin. Washing Area: This area drains to the trench drain along the western side of the facility. Inspect CB 1 (see Figure 1) for oil and grease-like pollutants. Housekeeping: Good housekeeping, as described previously, can prevent a significant amount of contaminants from entering runoff as well as promote pride in providing a clean facility. 14 R. W. Beck Final SWPPP - Fire Station 91.doc 6/9/09

21 Stormwater Pollution Prevention Plan for Fire Station 91 Also, new employees should be briefed on the spill cleanup plan as part of their job training and orientation. The storm drainage system, spill prevention practices, and spill cleanup procedures are to be reviewed in detail. All site employees are to be given a refresher briefing on the spill cleanup plan annually, stressing the importance of spill prevention, good housekeeping, and emergency spill cleanup procedures. Spill Kit Currently, Fire Station 91 is not equipped with spill cleanup kits. Rather, there are spill supplies on hand with the equipment carried on each fire engine. These supplies include absorbent powder (spill cat), cloth, and rolls that can be placed around storm sewers. Since the Seattle Fire Department is called in during major spills, a more robust and multi-purpose spill kit is not considered a necessity. However, it is recommended that a minimal spill kit be permanently placed near the fueling station and be available for spills from vehicles while refueling. A minimal spill kit should contain the following materials: 1-25-pound bag of rice hull ash 1 - Flat-edge short shovel inch x 18-inch oil absorbent pads 1 - Pair of chemical resistant long rubber gloves 1 - Roll of duct tape 2-6 mil thickness 30-gallon plastic bags 1 - Clear plastic eye and face protection shield 2 - Plastic tarps If materials from the kit are used for spills, the station supervisor should report the items used and request that they be restocked immediately for use. In addition, the kits should be checked semi-annually to verify that all materials are available. File: / R. W. Beck 15

22 Stormwater Pollution Prevention Plan for Fire Station 91 Monitoring Plan To comply with the Stormwater Permit, the City of Mercer Island must perform periodic visual observations of discharges from the facility to evaluate the effectiveness of the BMPs. Water quality sampling of discharges is not required by this Permit. This SWPPP includes a visual monitoring plan, to begin the fourth quarter of Inspection quarters are defined as follows: Inspection Type Period Frequency Location Wet Weather Oct., Nov. Annually 1 All catch basins, with closer or Dec. inspection of CB 1 Trench Drain Asphalt Swale Asphalt surface surrounding the fuel station within the berm Dry Weather July, Aug. or Sept. Annually 1 Same as Wet Weather 1. The City may increase frequency or decrease frequency based upon need, as determined by the initial inspection findings. The following periodic observations are to be performed, with results recorded on the provided inspection forms. See the Best Management Practices section for additional inspection and maintenance requirements. Annual Wet Weather Inspection Inspect one time during each quarter, during a storm event generating observable overland flow from paved surfaces. Follow and fill out the Wet Weather Inspection Form (Form B-1 in Appendix B) and make additional notes as needed. During wet weather inspections: Verify that the description of potential pollutant sources and the Facility Site Plan are accurate. Make certain that the pollutant reduction controls are being implemented, maintained, and are functioning adequately. Inspect all drainage structures for defects and maintenance needs. List observations of floating materials, suspended solids, oil and grease, discoloration, turbidity, odor, etc. in stormwater discharges and their probable source. 16 R. W. Beck Final SWPPP - Fire Station 91.doc 6/9/09

23 Stormwater Pollution Prevention Plan for Fire Station 91 Annual Dry Weather Inspection Inspect one time each year, following at least seven days of dry weather, between July 1 and September 30. Follow and fill out the Non-Stormwater Discharge Dry Weather Assessment and Certification Form (Form A-4 in Appendix A) The objective of these observations is to determine if unauthorized non-stormwater discharges (e.g., domestic wastewater or noncontact process wastewater) to the stormwater drainage system are occurring. These illicit flows are much more difficult to detect during periods with stormwater flows, and therefore it is important to make these observations during a very dry period. During wet weather inspections: Verify that the description of potential pollutant sources and the Facility Site Plan are accurate. Make certain that the pollutant reduction controls are being implemented, maintained, and are functioning adequately. Inspect all drainage structures for defects and maintenance needs. List observations of floating materials, suspended solids, oil and grease, discoloration, turbidity, odor, etc. in stormwater discharges and their probable source. During dry weather inspections: If flow is present, then the inspector must determine whether or not it is a result of non-stormwater discharges. The inspector must use his/her judgment as to the source. Smoke testing or dye studies are not required to differentiate between industrial and non-industrial sources at this site. If flow is present and believed to be a non-stormwater discharge (e.g., domestic wastewater, process wastewater, etc), then recommended action(s) should be identified and completed on Form A-4. If flow is present and believed to be industrial discharge (i.e. washwater, leachate), then the Department of Ecology s Northwest Regional Office must be notified ( ). Reporting Inspection data obtained during each monitoring period must be summarized and reported on a Discharge Monitoring Report (DMR) form. File: / R. W. Beck 17

24 Stormwater Pollution Prevention Plan for Fire Station 91 Records Retention Records must be retained for a minimum of five (5) years. Records include but are not limited to: inspection reports maintenance records records of repairs (including costs) 18 R. W. Beck Final SWPPP - Fire Station 91.doc 6/9/09

25 Appendix A Site Assessment

26 FORM A-1. Completed by: City Staff / R. W. Beck Material Inventory Title: Date: September 2008 List materials handled, treated, stored, or disposed of at the site that may potentially be exposed to precipitation or runoff. Also indicate if any spills or leaks of pollutants that have occurred since November 18, 1989 (Including any pollutants no longer handled on-site). Quantity (Units) Exposed since Likelihood of contact with Past Spill or Leak Used Processed Stored Nov. 89 stormwater. If yes, Material Purpose/Location (Indicate per/wk. or yr.) (Yes/No) describe reason. Yes No Fuel / Oil Service of fire engines N/A N/A N/A Potential when refueling X Material Inventory Form SWPPP for Fire Station 91

27 FORM A-2. Completed by: City Staff / R. W. Beck List of Significant Spills and Leaks Title: Date: September 2008 List all spills and leaks of toxic or hazardous pollutants since November 18, 1989, that were significant. Significant spills and leaks include but are not limited to, releases of oil or hazardous substances in excess of reportable quantities. Although not required, we suggest you list spills and leaks of non-hazardous materials. Response Procedure Date Location Description Amount of Material No longer Preventive Measures Taken (month/day/year) (as indicated Type of Reason for Material exposed to Stormon site map) Material Quantity Source, If Known Spill/Leak Recovered water (Yes/No) No Known Spills Significant Spills and Leaks Form SWPPP for Fire Station 91

28 FORM A-3. Completed by: City Staff / R. W. Beck Areas Associated With Industrial Activity Title: Date: September 2008 List areas and activities, not included on previous worksheets, which may be sources of pollution. Discuss the potential of these areas and activities as potential pollutant sources and identify any pollutant that may be generated by that activity. Industrial Area or Activity Potential Stormwater Pollutant from Area or Activity Likelihood of being present in stormwater discharge. If yes, describe reason. Fueling Station Fuel Small likelyhood of dripping onto paved areas draining to the stormwater treatment system Washing Area Vehicle Fluids / Metals / Detergents Likely since the washwater drains directly to the stormwater system Areas Associated With Industrial Activity Form SWPPP for Fire Station 91

29 FORM A-4. Annual Non-Stormwater Discharge Dry Weather (July 1 to September 30) Assessment & Certification Completed by: Title: Date: The dry season inspection shall determine the presence of unpermitted non-stormwater discharges such as domestic wastewater, wash water, or leachate to the stormwater drainage system. Tests may include: visual observations of flows, odors, oily conditions, and other abnormalities; dye tests, television line surveys; and/or analysis and validation of accurate piping schematics Method Used to Identify Potential Inspection Inspection Location Test or Evaluate Flow Present Significant Sources Person(s) Who Date Discharge (yes or no) of Non-Stormwater Flow Conducted the Test CERTIFICATION Based on my inquiry of the person or persons who manage the systems or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. A. Name & Title B. Phone: C. Signature D. Date Signed Annual Dry Weather Inspection form SWPPP for Fire Station 91

30 Appendix B Inspection Forms

31 FORM B-1. Wet Weather Inspection Completed by: Title: Date: These inspections are to be performed and recorded quarterly. The wet weather inspection will be performed during a runoff generating storm to verify the functioning Indicate which of the two inspections is performed by circling one of the two types of inspections above. What to Inspection Inspection Location Look For Condition Date CERTIFICATION Based on my inquiry of the person or persons who manage the systems or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. A. Name & Title B. Phone: C. Signature D. Date Signed Wet Weather Inspection Form SWPPP for Fire Station 91

32 FORM B-2. Preventative Maintenance Inspection Completed by: Title: Date: These inspections are to be performed and recorded quarterly. The wet weather inspection will be performed during a runoff generating storm to verify the functioning Indicate which of the two inspections is performed by circling one of the two types of inspections above. What to Inspection Inspection Location Look For Condition Date CERTIFICATION Based on my inquiry of the person or persons who manage the systems or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. A. Name & Title B. Phone: C. Signature D. Date Signed Wet Weather Inspection form SWPPP for Fire Station 91

33 FORM B-3. Training Achievements Completed by: Title: Date: Note all significant training achievements on this form including staff meetings, courses, and job training Date: Personnel: Achievement(s): Training Achievements Form SWPPP for Fire Station 91

34 FORM B-4. Sampling Event Log Completed by: Title: Date: Sample Sample Sample CAS Analytical Concentration Reporting Parameter Date Time Location (1) Number Method Detected Units MDL (2) PQL (2) Sampler (3) (1) Use Monitoring Plan Site Map ID (2) MDL = method detection limit; PQL = laboratory practical quantitation limit (3) Must be conducted by qualified person identified in the SWPPP Sampling Event Log SWPPP for Fire Station 91

35 Appendix C Standard Operating Guidelines for Fire Station 91

36 1.0 Purpose Mercer Island Fire Department Standard Operating Guidelines GAS OR OIL SPILL RESPONSES Article 800 Section To provide Mercer Island Fire Department employees guidance for responses to oil and/or gas spills. 2.0 Organizations Affected 2.1 Mercer Island Fire Department 2.2 Seattle Unit Washington State Department of Ecology 2.4 City of Mercer Island Maintenance Department 3.0 References 3.1 Internal Policies General Orders; Rules Manual. 4.0 Definitions 4.1 Hazardous Materials Technician in the contet of this policy, it refers to technicians with Seattle Unit Large Spill defined as a spill that exceeds the capacity of the Mercer Island Fire Department to mitigate. 4.3 PPE refers to Personal Protective Equipment. 4.4 Small Spill is a general term defined as a spill within the capacity of the Mercer Island Fire Department to mitigate. 5.0 Policy 5.1 PersonName The Mercer Island Fire Department shall respond to all reports of oil and/or gas spills, and take appropriate action to contain, control & mitigate the problem(s) encountered. Printed: 04/30/09 Page 1 of 3 Section 18

37 6.0 Procedures 6.1 The first arriving unit shall take control of the scene and provide scene management. This includes the establishment of Hot, Warm & Cold zones if necessary If traffic control is necessary, the Incident Commander / first arriving officer shall request assistance from the Police Department. 6.2 The Incident Commander / first arriving officer shall attempt to identify the product The Incident Commander shall attempt to gather any and all documentation related to the incident, as it relates to the material(s) spilled The Incident Commander shall secure any witnesses for interview by Hazardous Material Technicians. 6.3 The Incident Commander / first arriving officer shall assess the hazards associated with the product spilled, utilizing all available resources. 6.4 The Incident Commander / first arriving officer shall ensure all personnel are wearing the appropriate PPE 6.5 Based on a thorough risk assessment, appropriate control & containment actions should be taken. 6.6 If it is determined to be a large spill, the on scene officer shall contact Fire Dispatch and request Seattle Unit 77, and implement Incident Command. 6.7 When Seattle Unit 77 is responding and on the air, the Incident Commander shall contact Unit 77 and provide the following information: Location Confirmation Command Name and Location Type of Material if known. Amount of material. Isolation distance(s) On scene PPE Status of MSDS, shipping papers, etc. Printed: 04/30/09 Page 2 of 3 Section 18

38 Base location for Seattle Unit 77 apparatus. 6.8 If the material has entered storm drain systems or natural waterways, notify Washington State Department of Ecology and the City of Mercer Island s Maintenance Department. 6.9 If determined to be a small spill, use available dirt or absorbent to remove spilled substance from the street or highway With any type of incident involving oil and/or gasoline, proper decontamination procedures shall be exercised by Mercer Island Fire Department personnel. Printed: 04/30/09 Page 3 of 3 Section 18