IDDE Scenario Introduction

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IDDE Scenario Introduction. The following presentation and scenarios are a supplement to the August 2008 NEWSC IDDE Training Power Point Presentation and the Group “A” Scenario Interactive Presentation.
Transcript
IDDE Scenario IntroductionThe following presentation and scenarios are a supplement to the August 2008 NEWSC IDDE Training Power Point Presentation and the Group “A” Scenario Interactive Presentation. This is to be used as a guidance tool to aid in to how to potentially respond to illicit discharge being reported.Select a scenario from the following index slides and walk yourself through the situations.Click for next slideIDDE Scenarios
  • General Scenario Overview Table
  • Tacky Situation
  • Wax Job
  • Blue Water
  • Broken sanitary sewer
  • Up from the ground comes a bubblin’ crude
  • Not bubblin’ but got crude
  • Questions
  • Exit
  • Click for next index slideScenariosNOYESNOYESNOYESNOYESNOYESNOYESNOYESNOYESNOYESReturn to Scenario IndexTacky SituationThe weather forecast calls for a slight chance of showers for the morning. Therefore, a paving contractor decides not to check the local radar to see if there is any weather in the area and proceeds to start placing liquid tack onto the existing pavement. After placing 90 gallons of tack there is a 15-minute cloud burst which flushes 30 gallons of the tack down the gutter line and into multiple storm inlets. Two of the inlets discharge to a storm water pond and the third discharges to a unnamed tributary to a coveted creek. What would you do?Click for next slideTacky SituationClick for next slideTacky Situation Cont’d.NO YESRecommended Action:Fill out Initial Contact Form? Call 911?Notify the Illicit Discharge Coordinator?Call Municipalities Operation Department to Assist in providing storm sewer information?Contain and identify the substance?Find the source of the discharge?NO YESNO YESNO YESNO YESNO YESClick for next slideTacky Situation Cont’d.Since the contractor was present you already knew who the responsible party was and what the substance was, therefore the fire department was not involved. Temporary dikes were made with sand bags and oil dry prior to the inlets and small absorbent booms were placed at the outfall at the tributary. These materials were supplied by the municipality because the contractor didn’t have any of those materials readily available. Thankfully, the tack settled out in the large storm sewer and none of it discharged to the tributary. Unfortunately, the storm water pond wasn’t as lucky as trace amounts did make it to the pond which caused a dark discoloration of the water. Click for next slideTacky Situation Cont’d.Residual Tack in Storm Outlet PipeContaminated Pond ForebayTemp Sandbag Dike w/ Oil DrySmall Absorbent Booms in ChannelClick for next slideTacky Situation Cont’d.Oil dry was placed in the gutter lines to absorb any remaining tack which was then swept up and taken for disposal. The storm sewers were cleaned and the water was collected and taken to be treated. Some of the sediment from the storm water pond was dredged out and taken for disposal as well.Return to Scenario Index You receive a phone call from the local sanitary treatment facility that you may be having a sanitary sewer back-up as there is liquid coming out of a manhole in the middle of the pavement.Wax?What would you do?Click for next slideWax Cont’d.NO YESRecommended Action:Fill out Initial Contact Form? Call 911?Notify the Illicit Discharge Coordinator?Notify WDNR?Contain and identify the unknown substance?Find the source of the substance?Call Municipalities Operation Department to Assist in providing storm sewer information?NO YESNO YESNO YESNO YESNO YESNO YESClick for next slideWax Cont’d.Upon receiving the phone call and taking some of the initial information a phone call to the operations department was made to have them respond to the situation and treat it as a sanitary sewer back-up. HOWEVER, since the discharge was on the pavement there was the potential that it has made its way to the storm sewer system. Upon arriving on site, you notice the large wet area and check the first inlet and you let out a big sigh of releif as it didn’t find it’s way to the inlet. You then look down the roadway and notice that it has made its way down the curb line to a different inlet. You now have a double header of a sanitary sewer back-up and an illicit discharge. Click for next slideWax Cont’d.Sand bags were placed in the gutter line just prior to the inlet to dam up any additional discharge. The crews dislodged the obstruction within the sanitary sewer which eliminated any further discharge onto the pavement. Once the flow had stopped, gypsum was spread out on the pavement to absorb the wet material. They gypsum was allowed to sit for a period of time and then swept up and disposed of. Since the discharge had gotten into the storm sewer, sand bags were placed in the storm sewer at a down stream location that was also out of the main roadway for safety purposes and to ensure that a majority of the illicit discharge was contained. The storm sewer was then flushed, cleaned and vacuumed out to collect the gray water. The WDNR was informed at the time of the incident, after the incident was contained and then again after the site had been cleaned up.The cause of the sanitary sewer back-up has been investigated. It was initially presumed to be grease from local fast food establishments, but they actually discharge to other sewers. The only properties hooked to this sanitary sewer main is a gas station with a C-store and a car wash. The sewer was televised and the remaining material in the main appears to be wax.Return to Scenario IndexBlue Water
  • You are on your way to a NEWSC Committee meeting when your cell phone rings. You note that it is a member of your municipalities Operations Division. What would you do?
  • Don’t answer the phone because you want to set a good example to other drivers and not talk and drive.
  • Answer the phone because it’s your job.
  • You answer the phone and are informed that Operations has come across a water way that is a pretty blueish / greenish in color. They don’t know exactly what it is or where it is coming from. There is a directional boring contractor down the road. They state that it does not appear to be sewer dye.What would you do?Click for next slideBlue Water Cont’d.Recommended Action:Ignore it. It’s a pretty blue/green color therefore it can’t be hurting anything?Call someone else to handle the situation, as you are going to a NEWSC committee meeting? Fill out Initial Contact Form? Call 911?Notify the Illicit Discharge Coordinator?Call Municipalities Operation Department to Assist in providing storm sewer information?Contain and identify the unknown substance?Find the source of the discharge?NO YESNO YESNO YESNO YESNO YESNO YESNO YESNO YESClick for next slideBlue WaterBeing the dedicated NEWSC individual you call another staff member to go and investigate the situation. You relay as much information to them as possible and inform them to follow the protocol established in the Spills Response Manual. They ask if they should call 911 and you respond that will need to be a field determination but from the information you are receiving it sounds like a dye of some sort. Then call WDNR to give them a heads up that you have something going on and will keep them informed.When the person arrives on site they see a pretty teal colored waterway. The color starts at a culvert which a storm sewer ties into, but looking up-stream in the storm sewer system, there is no signs of this teal colored water.Click for next slideBlue WaterClick for next slideBlue Water Cont’d.It is noted that during the period of time that you are there the coloring is fading. The neighbors come out and ask what is going on. They inform you that this happens frequently but not linked to any rain event. The boring contractor has been there most of the summer but have not been using any dyes. They property to the east is agricultural lands and the property to the west is a golf course.The WDNR arrives on site and assists with the investigation. In a short period of time, it was determined that the golf course had recently applied a liquid fertilizer to the greens which contained a blue/green dye. The golf course then cleaned their equipment over or near a private catch basin which then flows into the municipalities storm sewer which ultimately flows to the waterway. The fertilizer also contained copper sulfate which added blue coloring to the water.Click for next slideBlue Water Cont’d.Return to Scenario IndexBroken Sanitary SewerAn inexperienced operator of a building demolition contractor was at the controls of a track hoe. The operator dug down to find the sanitary lateral without any supervision or Diggers Hotline Locates. He not only removed the lateral but also removed a section of the City’s sanitary sewer main. The operator figured that was good enough just to remove the sewer and buried his mistake and left for the day. About three hours later an individual notified the operations department that a small lake was forming in the low area on the property. What would you do?Click for next slideBroken San. Swr. Cont’d.Click for next slideBroken San. Swr. Cont’d.NO YESRecommended Action:Fill out Initial Contact Form? Call 911?Notify the Illicit Discharge Coordinator?Call Municipalities Operation Department to Assist in providing sewer information?Contain and identify the unknown substance?Find the source of the discharge?NO YESNO YESNO YESNO YESNO YESClick for next slideBroken San. Swr. Cont’d.The careless actions of this contractor created two discharges – Illicit Discharge to the City’s MS4 and a Sanitary Sewer Overflow. Since this happened late in the day a contractor wasn’t able to locate lights and equipment in a timely manner. To continue sanitary service to the hundreds of up-stream customers, a temporary by-pass pumping schedule was developed for the night. The City also installed a safety fence around the ‘lake’ to prevent curious people from entering the site. The City hired a contractor during the evening to dig down to do the repair the next morning. It was estimated that 107,000 gallons of gray water was discharged and the majority of that quantity was recovered. Only a small amount of sewage founds its way to the nearby storm sewer inlet. The site was treated with lime to neutralize the affects of the sewage that had been sitting on the ground. The demolition contractor was banned from doing work within the City for 2-years and was required to pay all costs.Return to Scenario IndexUp from the ground comes a bubblin’ crude, #2 Diesel Fuel!You hear a rumor that there may be a petroleum issue near your largest storm lift station for your City. What would you do?
  • Do nothing, it’s just a rumor.
  • Casually and hap hazardously investigate the rumor.
  • Call out the Calvary and prepare to concur the rumor, whatever it may be.
  • Systematically investigate the rumor to ensure its validity and take appropriate steps.
  • Click for next slideBubblin Crude Cont’d.Option “D” was the correct answer. Upon making a phone call you find out that there was an unknown substance bubblin’ out of the ground as come upon by a patrol officer during his routine rounds of the area. The officer requested the operations division to place barricades in the street so no vehicles would drive through this substance until it was fully investigated in the morning. The unknown substance was later identified to be #2 Diesel Fuel bubblin’ out of the ground about 75 feet away from your storm lift station. The fuel oil had found it’s way to the street and to a storm inlet which drains to the lift station. The storm lift station discharges into the Fox River less than ½ mile from the mouth of the Bay of Green Bay. Now what would you do?Click for next slideBubblin Crude Cont’d.NO YESRecommended Action:Fill out Initial Contact Form? Call 911?Notify the Illicit Discharge Coordinator?Notify WDNR?Notify EPA?Notify US Coast Guard (USCG)?Contain the substance?Find the source of the substance?Identify the Responsible Party?NO YESNO YESNO YESNO YESNO YESNO YESNO YESNO YESClick for next slideBubblin Crude Cont’d.The first thing that was done after finding out what the substance was and the location of the discharge was an order that the power to the pumps within the lift station were to be turned off AFTER the air quality within the building was checked, as there was a very strong presence of petroleum odor within the building. The initial contact form was not filled out as the form is structured today, but a lot of the information was gathered as to where the incident was located, what the substance was and then the WDNR was notified of the situation. The WDNR arrived on scene and had notified the National Spills Hotline and thus EPA and USCG were subsequently notified.It was not known if the fire department was notified by the officer, but they were made away of the situation at this time.Click for next slideBubblin Crude Cont’d.The substance and thus source of the fuel oil was relatively simple to determine. There are multiple petroleum pipelines running parallel to roadway from tanks to a distribution terminal. Thus the responsible party (RP) was quickly identified as well. The RP quickly isolated the pipeline and hired a contractor to start excavating near the location where the fuel oil was coming out of the ground. As the excavation was progressing additional measures were being taken to aid in protecting the Fox River and the Bay as wet weather was being predicted and we may need to return power to the pumps in the lift station such that we don’t flood out areas up-stream.Click for next slideBubblin Crude Cont’d.Click for next slideBubblin’ Crude Cont’d.Click for next slideBubblin’ Crude Cont’d.A relatively small crack in a fuel distribution line caused 20,000 gallons of water and diesel to be discharged. The clean-up of the contaminated ground, railroad ballast and storm sewer took over 6-months to complete at an unknown cost.Return to Scenario IndexBroadway Fuel DumpYou receive a phone call from one of your employees who is doing a routine inspection of a storm lift station on a nice February afternoon. They inform you that when they opened the cover of the lift station, there was a massive petroleum odor from within and a significant black discoloration on the top of the water in the pit.What would you do?Click for next slideBroadway Fuel Dump Cont’d.NO YESRecommended Action:Fill out Initial Contact Form? Call 911?Notify the Illicit Discharge Coordinator?Notify WDNR?Contain and identify the unknown substance?Find the source of the substance?Call Municipalities Operation Department to Assist in providing storm sewer information?NO YESNO YESNO YESNO YESNO YESNO YESClick for next slideBroadway Fuel DumpPANIC!!!!!Since the lift station was a confined space with an explosive vapor within it, the employee was instructed to step away from the lift station and as safely as possible to turn off the power to the pumps from the main control panel. Once the source of ignition was significantly reduced, additional phone calls were then made to further investigate this situation. One phone call was made to the fire department to ensure the safety of all and to assist in monitoring air quality and explosive levels. A second call was made to the operations director to assist in locating the source of the petroleum and the third was to the WDNR.The lift station was at the end of the storm sewer system prior to discharging to the Fox River. Thus the search for the point of contamination began at the lift station and thankfully it is a relatively small drainage basin. However, this is one of the primary areas in theClick for next slideBroadway Fuel DumpCity where petroleum products are dispensed and stored which also has a large amount of tanker truck traffic. There is also a major supply pipeline coming from Milwaukee to service the two tank farms and terminals.Upon insuring that the site was ‘safe’ from explosions, an investigation as to how the petroleum product entered the storm sewer system. There is a total of 8 inlets and two day lighted pipes draining into the storm sewer system which feeds the lift station. All obvious points of entry were ‘clean’, but there was definitely product in the lift station as indicated by the photos.Click for next slideBroadway Fuel DumpThe owner of the tank farms and terminals thought that it was an illegal dumping and they would vacuum out the product in the lift station and treat it. With a warm spell going on, approximately 100 gallons of a petroleum water mixture were skimmed off the top and clear water was pulled off the bottom with a portable pump to keep the lift station functional. Absorbent booms were placed within the outfall to collect any potential release of product to the Fox River. Approximately 5 gallons of product were recovered.Click for next slideBroadway Fuel DumpThis appear to take care of the issue……..that is until the following week end when it came back late on a Friday afternoon. Again the petroleum owner came to the rescue and skimmed off the petroleum / water mixture and captured approximately 20 more gallons of free product. There were still no signs of illegal dumping. Therefore, it was concluded that it must be entering the storm sewer system through a break or open joints so the sewer was televised. Upon review of televising, there were no significant signs of distress to the storm sewer. Out of curiosity a sanitary sewer manhole cover was opened and there was a sheen and petroleum odor present. The situation just elevated itself. As a precaution, the fire department was called in again due to the fact that the petroleum product was now in the sanitary system and there may be direct conduits to ignitions sources in businesses and residential properties. Air quality readings were taken and Lower Explosive Limit (LEL) readings were around 50 on the initial readings. Click for next slideBroadway Fuel Dump
  • It was decided to vent the sanitary sewer and continue to monitor the LEL, so about a dozen manhole covers were opened and fans pulled air out of sanitary sewer. After about two hours of venting the LEL returned to safer levels of below 10. While venting, the sanitary sewer was plugged so that no additional contaminated waste water could flow down stream. The local waste water treatment facility was also alerted to the situation so that they could take appropriate actions if necessary.
  • So it’s 8 o’clock at night, you have petroleum product in your storm sewer, storm lift station and sanitary sewer…….now what do you do?
  • Do nothing. Go home and deal with it on Monday during the day?
  • Tell the tank farm and terminal owner to deal with it as is obviously a petroleum issue.
  • Order emergency excavations to locate the source of the leak and inflow……but where to dig……and what about the pipeline?
  • All the above or a combination of the above?
  • Click for next slideBroadway Fuel Dump Cont’d.The option selected was a combination of the above. Emergency Digger Hotline Locates were called in. The terminal and tank owner was preparing to locate lights to start digging at selected locations were their lines crossed the sewers, but things were put on hold when the pipeline representative made a comment that their system wasn’t holding pressure and that they were running another pressure test.With the sanitary sewer plugged off, the storm lift station turned off, the situation was stable for the evening and it was concluded digging under lights would not necessarily be the safest option, so all parties were to reconvene at 7 am Saturday morning. Saturday morning – digging commenced and continued on for more than a week.Click for next slideBroadway Fuel Dump Cont’d.The option selected was a combination of the above. Emergency Digger Hotline Locates were called in. The terminal and tank owner was preparing to locate lights to start digging at selecte
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