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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 <br />07/15/2021 <br />Recorded by <br />Reviewed complaint documentation. No final laboratory report was received from MANZO <br />Simplot. Called John Pallen 208-867-2627, asked for the final lab report for soil <br />sampling conducted at the site. John indicated that they collected one sample at <br />the incident location, one where the liquid entered the ditch, samples 2,3, and 4 <br />down gradient from the spill (inside the ditch), and sample 6 up gradient from the <br />spill. EHD was not present for sampling, let John know that it's our policy to <br />always witness the sampling. John indicated that he is a licensed professional with <br />professional integrity and he guarantees samples validity. Asked to place sample <br />locations on pictures taken during sampling, if possible, and send it to the EHD. <br />Let him know that we will review the results and let him know if additional sampling <br />will be necessary. John indicated that because a strong base and strong acid <br />commingled during the incident the residual pH was close to neutral (outside of <br />the hazardous waste limits). Provided my contact information for the final lab <br />report to be sent to the EHD along with any pictures taken during sampling. <br />07/21/2021 Reviewed and summarized sample results received from the facility. FGL labs <br />performed analytical. <br />Sample 5TK2139039-001, dated 6-28-21, Ditch East <br />pH = 5.1 <br />phosphorus (mg/kg) = 3090 <br />sodium (mg/kg) = 3640 <br />Sample STK2139039-002, dated 6-28-21, Ditch Central <br />pH = 7.5 <br />phosphorus (mg/kg) = 616 <br />sodium (ring/kg) = 896 <br />BAKER <br />Sample STK2139039-003, dated 6-28-21, Ditch West <br />pH = 6.3 <br />phosphorus (mg/kg) = 572 <br />sodium (mg/kg) = 884 <br />Sample STK2139039-004, dated 6-28-21, far west <br />pH = 7.2 <br />phosphorus (mg/kg) = 344 <br />sodium (mg/kg) = 193 <br />Sample STK2139039-005, dated 6-28-21, tank area <br />pH = 7.4 <br />phosphorus (mg/kg) = 565 <br />sodium (mg/kg) = 803 <br />Sample STK2139039-006, dated 6-28-21, Power Pole <br />pH = 7.1 <br />phosphorus (mg/kg) = 441 <br />sodium (mg/kg) = 299 <br />All of these results for the soil and ditch are not at the hazardous waste regulatory <br />level for corrosivity. <br />John Pallen (EHS Manager) replied via email that as a result of the above <br />sampling Simplot feels no further action is required. <br />07/22/2021 Verified GIS in EC. BAKER <br />5105.rpt <br /> Page 5 of 6