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Complaint Investigation Summary <br /> Report #: 5105 <br />COMPLAINT ID: COOGC037H Site Location: 18129 E SOLA RD <br />Activity Summary <br />Activity Date Recorded by <br />06/25/2021 Received a phone call from Simplot, Environmental Health Safety Manager, John PRESTO <br />Pallen (208-867-2627). He received my number from Robert Blevins. John stated <br />that the chemicals have been diluted from washing the injured person off and <br />asked if a report to Cal OES still needed to be made. I stated that the report will <br />still need to be made as a spill occurred. He asked if he needed to report back to <br />EHD that the report was made. I informed him that the Cal OES report notification <br />will be sent to applicable agencies after he makes the report. He stated that he is <br />waiting to make a report to Cal OSHA then will make the spill report. Switched <br />phone call to speaker phone and Elena Manzo (lead senior) spoke with John <br />regarding reporting requirements to Cal OHSA and Cal OES report. <br />06/28/2021 Called John Pallen (Simplot) at 208-867-2627 to get an update on the clean-up. BAKER <br />He said that they took more soil samples today and have sent them to the lab and <br />the results should be back by 6/30/21 at the latest. <br />Turned in Prop 65 to Elena Manzo (Lead Sr. REHS) for review. <br />06/29/2021 Reviewed SDS for sodium chlorite. SDS states that sodium chlorite is hazardous BAKER <br />waste due to potential risk of explosion and hazardous waste due to toxicity. pH is <br />less than 12. <br />Reviewed SDS for etidronic acid. Etidronic acid has a pH of less than 2 and a 96 <br />hour fish bioassay with rainbow trout result of 368 mg/I. <br />Received email from John Pallen (EHS Manager) that on 6/26/21 Ancon <br />performed a set of soil pH measurements at the spill site. The soil samples were <br />taken at 40 to 50-foot intervals and included soil from the surface down 2-3-inches <br />deep. Water was added to each soil sample, then a pH taken with 0-14 range pH <br />paper. Results were: <br />-Area of tank rupture — 3 samples taken at location of tank and between the tank <br />and the ditch. pH results were 6 (by WG3500 tank), 5 (by WG3000 tank), and 4 <br />(between tanks and ditch). <br />-In the ditch, from east (nearest to tank) to west— pH of 5, 5, 7, 6, 5, & 7. <br />The ruptured tank, hoses, and other articles were decontaminated by Ancon, <br />placed in a tote, and taken to the SGS Stockton location for temporary storage. A <br />partial drum of spent absorbent and soil was collected during decon and taken to <br />SGS Stockton for temporary safe storage. <br />Completed photo log. <br />06/30/2021 Completed site map. BAKER <br />07/01/2021 Informed by Lydia Baker, Sr REHS, that the clean-up may occur over the FLORID° <br />weekend. Reviewed narrative and photo log. <br />07/01/2021 Called John Pallen (EHS Manager) at 208-867-2627 for an update. He said the BAKER <br />analytical is back and he will review and send it over to me today. Clean-up plans <br />have not been made yet. <br />07/06/2021 Emailed John Pallen (EHS Manager) at John.Pallen@simplot.com for an update BAKER <br />on the clean-up. Called and left a message for John Pallen at 208-867-2627. <br />5105.rpt <br />Page 4 of 6