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Complaint Investigation Summary <br /> Report #: 5105 <br />COMPLAINT ID: C0J8BCMSJ Site Location: 1412 EL PINAL DRIVE <br />Activity Summary <br />Activity Date Recorded by <br />03/29/2021 Continued from 3-28-2021. MURO <br />still at spill location verifying cleanup. <br />Left site 12:37 AM <br />Arrived Home 1:01 AM. <br />03/29/2021 Completed Prop 65. MURO <br />Provided update to Richard Stifling. <br />Called Mark Bear for a different complaint, however, he also asked for status <br />update on this incident as well. Provided update. <br />Called Bryan Toledo, Senior Environmental Control Officer at City of Stockton to <br />provide update. <br />Called Brad Mello: Left message with status update. Brad called back said he was <br />planning to go to the facility but received another call to go to Lodi instead. He said <br />he will not be going afterall based on my statement and the call he received from <br />Saua her at 1:00 AM with details with the amount of substance removed and the <br />pH tests. <br />Soua Her today emailed me (souah@sumidenwire.com) to ask if the rinse water <br />from flushing out the storm line back into the picking process as makeup water <br />estimated at 440 gallons. This collected water ha a pH of 4. When ferrous sulfate <br />fail to crystalize and is in liquid format, this liquid is placed back pickling tank for <br />re-use. The conditions leading to the event was dry with no rain in the preceding <br />48hrs. The water collected was from the cleanout process. He would like approval <br />to proceed. <br />I replied with question for waste determination for the rubber mat used to cover the <br />strom srain. Soua's reply was: The rubber mat you referenced is made of <br />polyurethane material. The drain seal is designed to be used in an emergency to <br />prevent liquid flow into the storm drains. Based on disposal requirement I can <br />have it disposed of two ways. <br />Because the polyurethane material it does not soak or store any liquid it comes <br />in contact with. I can triple rinse, use the rinse water in our pickling system and <br />dispose of the drain seal as general trash. <br />The seal can be discarded with absorbent materials which will be profiled as <br />NON-RCRA Hazardous Waste Solid <br />Discussed with Lead Senior Garrett Backus and Lead Senior Elena Manzo. <br />Called Soua Her and let him know it is okay to place rinse water back into the <br />process. <br />03/29/2021 Briefed Elena Manzo on complaint received over the weekend. MURO <br />03/30/2021 Returned call from Soua Her 209-313-3755 regarding his request to reuse water MURO <br />generated from hydroblasting the storm drain lines. ... <br />03/30/2021 Revised Prop 65. MURO <br />Discussed facility's request to reuse water generated from hydroblasting storm <br />drain lines with Lead Seniors Elena Manzo and Garrett Backus. <br />5105. rpt <br />Page 3 of 4