COMPLIANCE INFO_2020 (2) - Laserfiche WebLink

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SOURCE REDUCTION MEASURES AND EVALUATION Wastewater treatment 1 . Input changes — Wastewater is treated to remove chromium . All processes which contribute to the waste stream contain chromium . Since most of the processes we use are driven by the customer, it is difficult to find alternatives . Boeing specifies a chromated conversion coating process . There are no non- chromated alternatives currently available . They are investigating alternatives , however, actual use may still be years away . The air scrubber water is generated from the exhaust over the heated deoxidizes solution which contains a sodium dichromate and sulfuric acid solution . A non-chromated process is available (Phosphoric Acid Deox — PAD) , however, it is not widely accepted by our current customers . This was reviewed in our initial SB 14 submission in 1990 . The sump waste water is a result of carryover, overspray and cleaning the process areas that use chromium containing materials . 2 . Operational improvement — Overspray occurs when rinsing parts coming out of the tanks . In an effort to prevent overspray from accumulating on the pit floor, a wall with rain gutters was built and placed on the south side of the cleaning center tanks so overspray returns back to the tank, reducing the amount requiring treatment . 3 . Production process changes — None . Processes are customer driven . 4 . Product reformulation — N/A . 5 . Administrative steps — Annual Hazardous Waste Management training is conducted to minimize and prevent the generation of hazardous waste . Graphite Pre-preg 1 . Input changes — None . Use of the material is customer driven . 2 . Operational improvements — Certain materials were tested to determine if they were actually hazardous waste . Results indicated that some were non-hazardous waste . Signs were created indicating which materials are non-hazardous and therefore able to be put into the regular trash and not collected and disposed of as a hazardous waste . 3 . Production process changes — Material is automatically cut to size using a ply cutter. It maximizes use of the material . 4 . Product reformulations — N/A . 6 . Administrative steps — Inventory control — It is difficult to keep off- spec material or excess material from our inventory . In many instances , there are minimum buy requirements . In some cases , if we run out of material , the lead time for getting additional material could be up to 6 months and this interferes with our ability to complete the job on time . Annual Hazardous Waste Management training is conducted to prevent the generation of hazardous waste . Phosphoric acid anodize solution (FPL etch process)