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[Music] welcome to the industrial stormwater certified operator training the slide on the screen lists the topics we will discuss during today's training your questions and input related to the industrial stormwater program are encouraged the questions you ask may help others and will make this training program more useful this is storm water and this training is specifically designed to increase your understanding of the role of the certified stormwater operator it is designed to work with the industrial stormwater certified operator training manual and to enhance your understanding of the requirements of the industrial stormwater program in addition this training will provide you with guidance to assist you in your duties as a certified operator let's begin with a brief overview of the water quality issues especially where they relate to precipitation and runoff from a raging stream during spring snowmelt to a gentle summer rain to the slow movement of water through the ground water is in constant motion the movement and endless recycling of water between the atmosphere the land surface and underground aquifers is called the hydrologic cycle this movement driven by the energy of the Sun and force of gravity supplies the water needed to support life understanding the hydrologic cycle is basic to understanding all water and is key to the proper management of water resources many processes work together to keep Earth's water moving in a cycle there are five processes at work in the hydrologic cycle condensation precipitation and filtration runoff and evapotranspiration these occur simultaneously and except for precipitation continuously stormwater and runoff are part of this natural hydrologic process under natural conditions the majority of rainwater that falls to the ground infiltrates the ground or evaporates however industrial activities can alter natural drainage patterns and add pollutants to rainwater and snowmelt the introduction of pollutants to stormwater most commonly occurs when industrial facilities allow operating procedures and industrial materials to become exposed to stormwater this potentially contaminated stormwater may then enter our lakes rivers streams and wetlands the best way to address this issue is through pollution prevention measures that focus on preventing the contamination of stormwater at the source which is more cost-effective and environmentally beneficial this pollution prevention concept has led to the development of the current stormwater regulations and the overall goal of the program which is to reduce the pollution entering the surface waters of michigan by implementing best management practices designed to prevent the contamination of stormwater runoff a key term to understand when considering pollution prevention measures is first flush so what does it mean well most automobile drivers are aware that roads are slick as after the first few minutes of a rainstorm it is in those first few minutes that oil grease and other pollutants that have accumulated on the pavement are picked up by water and transported to storm sewers or roadside ditches this washing action by stormwater is referred to as the first flush it has been determined that this first flush of stormwater runoff contains the highest percentage of pollutants which in general include hydrocarbons toxic pollutants organics nutrients pathogens and sediment now let's discuss some common sources of these pollutants hydrocarbons such as gasoline oil and grease are introduced to industrial stormwater runoff from spills at oil storage and fueling facilities automobiles and equipment and improper disposal of waste oils hunter carbons are known to be toxic to aquatic organisms at a relatively low concentration and should be a focus when considering are implementing stormwater runoff controls sources of toxic pollutants are quite varied pesticides herbicides metals wood preservatives oil-based paints use oils and solvents all can have toxic effects on aquatic life and may contaminate drinking water supplies some toxic subsys can accumulate in the food chain resulting in fish advisories and limiting the amount and type of fish we can safely eat now the following activities are sources of organic pollutants food processing composting operations failing septic systems animal waste airplane de-icing activities that use glycol based products and improper handling of antifreeze stormwater runoff can deposit large quantities of these substances in our lakes or streams if not properly managed as these substances are being broken down by bacteria levels of dissolved oxygen in the aquatic environment are decreased oxygen depletion is a common cause of fish kills and order problems especially in areas of shallow and slow moving waters nutrients are a typical pollutant associated with stormwater runoff the addition of phosphorous to stormwater runoff from landfills sediments septic field sewage animal wastes illicit connections and over fertilization result in algal blooms and excessive plant growth the presence of pathogens and surface water can cause ear and/or intestinal problems as a result of contact which inhibits recreational uses common sources of pathogens are illicit connections sanitary sewer overflows animal waste and failing septic systems sediment is one of the most widespread pollutants in surface waters sediment that is suspended in the water causes it to appear cloudy or turbine it is generated from construction activities bears soil around a facility gravel parking areas and stream bank and stream bed erosion many pollutants such as nutrients hydrocarbons metals and other toxic substances attached to sediment particles particularly fine sediments such as clay therefore as sediment is carried to a water body it can carry other pollutants with it even without attached pollutants sediment can be very destructive to aquatic systems by covering and damaging habitat chlorides and other salts are common in urban stormwater runoff due to the de-icing of impervious surfaces such as roads parking lots and walkways because salt is extremely soluble almost also applied to roads parking lots and walkways ends up in surface or groundwater high chloride concentrations can be toxic to many freshwater organisms and there are numerous documented cases of water contamination caused by stormwater runoff from inadequately protected stockpiles of salt and salt sand mixtures [Music]