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avoided having the need to have 2 tanks of deoxidizer solution running, while the "new" <br /> solution gets qualified to use . If we remove less than a 1 /3 of the solution, we do not <br /> have to requalify the solution . But we generated 52 ,033 pounds more of the solution as a <br /> result compared to 2014 . <br /> Since the deoxidizer solution is a heated tank, unlike the phosphoric acid tank, which is <br /> not heated , the deoxidizer solution is not affected by the wall and rain gutters which <br /> capture the overspray . <br /> Solvent contaminated debris <br /> Solvent wiping prior to bonding, priming, etc , is required by customer specifications . <br /> We ' re doing more projects with larger parts and as a result more surface area must be <br /> solvent wiped . 3 , 883 more pounds of solvent contaminated debris was generated in 2018 <br /> compared to 2014 . <br /> FACTORS AFFECTING MAJOR WASTE STREAMS <br /> Wastewater treatment <br /> Since the wall and rain gutters were installed late in 2018 , we hope to see significant <br /> reductions in the amount of wastewater being treated compared to 2014 . <br /> Graphite pre-prep <br /> As we grow the business and more graphite pre-preg is required to make larger parts , <br /> more orders with minimum buys may increase the amount of hazardous waste that is <br /> generated . Longer lead times to receive the materials may also cause us to purchase more <br /> than necessary and resulting in an increase . <br /> Phosphoric acid solution <br /> The installation of a wall and rain gutters to capture overspray reduces the amount of <br /> wastewater entering the wastewater treatment unit, but it can also affect the tank levels in <br /> the phosphoric acid solution . Since it is an unheated tank, the tank fills up and requires <br /> solution removal to prevent overfilling of the tank . <br /> Deoxidizer solution <br /> This waste was typically generated every 1248 months when the acid becomes spent . <br /> But since one of our customers tightened the limits on the copper levels , we have decided <br /> to perform monthly changeouts to keep the levels below the maximum allowed . This <br /> allows us to operate without the need to requalify the tank solution. <br /> Solvent contaminated debris <br />