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DANGER: Below grade spaces, like separators, <br />where various orgaiuc liquids have accumulated <br />over time may be hazardous due to volatile <br />compounds (explosive atmosphere) or lack o£ <br />oxygen. Worker enliy of conned spaces <br />requires extensive training and precautions. <br />Discharge of significant amounts of oil or solvent <br />wastes can interim with maintenance and safety <br />in d\e sewer lines and with the functioning of the <br />wastewater treatment plant Discharge of other <br />liquids is typically also highly regulated by ttie <br />sewer autfiority. Sludges accumulated in traps <br />may contain organic contaminants and heavy <br />metals, whidr truy classify die sludge as <br />hazardous waste. Expensive testing may be <br />required to evaluate the waste for determining <br />the proper disposal method. <br />Prppar Waste Management <br />Generally speaking, floating accumulated oQs <br />can be collected, and numaged and recycled widi <br />other used oil waste. Other floating luuuudous <br />materials collected in significant amounts, such <br />as petroleum solvents or corrosive cleaners will <br />ne^ to be maruiged as hazardous waste. <br />Bottom sludges may be nothing more than <br />accumulated dirt llie hazardous waste program <br />in metropolitan counties or at the Mirmesota <br />Pollution Control Agency (MPCA) can provide <br />guidance on how to best evaluate the wastes in <br />your business setting. You can then consult with <br />your service contractor about its ability to <br />properly dispose of this materiaL <br />Can the Problem be Minimized or <br />Prevented?_____________ <br />A floor drain system is often necessary for <br />business operations. However, drains arc often <br />neglected and often a surprise source of <br />problems when things go wrong. Routine <br />mainteruu.^e is required to prevent plugging and <br />to keep collected materials from discharging to <br />the sewer. Measures described below can reduce <br />or elimixute maintenance frequency and save <br />you money. <br />Operationi <br />Have onncttssary floor drains capped. <br />Determine if all your floor drains are necessa^. <br />If the location of a drain could cause or <br />contribute to problems with traps, consider <br />consulting with a licensed plumber to cap the <br />drain. <br />The Minnesota Department of Health Codes <br />recommends that a licensed plumber cap drains. <br />Improperly done, abandoned drains can be <br />dangerous sources of accumulated sewer gases. <br />Temporary snver plugs can be used in <br />emergencies to help contain spills and prevent <br />disdurge to die sewen <br />Liquids <br />Capture all solvents, fuels and oUy liquids. <br />Oils are easily recycled if captured and manjigfwi <br />separately. Tliis is done by collecting oil in drip <br />pans and trays, radier than allowing it to foil <br />onto die floor When oil does fall onto the floo^ <br />collect it by using a dust pan and squeegee. This <br />recovers the recyclable oil and minimizes <br />absorbent use. <br />Lost solvents, cleaners or other industrial liquids <br />cost you money to replace. These lost chemicals <br />ako cost you money to dean out of traps and to <br />dispose of properly. <br />Sludge that accumulates in traps also may be <br />hazardous waste if you are careless about die <br />materials and contaminants that enter the floor <br />^ain. Prepare for spill emergencies and keep <br />industrial liquids away from floor drains. <br />Solids and Dirt <br />Good housekeeping takes effort Don't use floor <br />trenches as a convenient receptacle for end of the <br />daydeanup. Clcaa the floor using dry methods <br />and don't take shortcuts. Use a broom and <br />dustpan instead of a garv.cn hose. <br />(cfmUnued) <br />I