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Complaint Investigation Summary Report #: 5105 <br />COMPLAINT ID: COLDTH9GK Site Location: 1000 E ROTH RD <br />Activity Date <br />Activity Summary <br />Recorded by <br />10/28/2020 Received an email from Kim Blackwell (EHD) with OES Spiill report number# 20- MURO <br />5946. Advised that Isabella Becomo (CA Waterboards) will be contacting me for <br />status. <br />Searched for spill report number 20-5946. <br />Reviewed complaint. <br />Received email from Isabella Bencomo Isabella.Bencomo@Waterboards.ca.gov <br />requesting status. <br />10/29/2020 Replied to Isabella Bencomo the status of the Cal OES Spill Report number MURO <br />20-5946. <br />11/23/2020 Received a voice message from Isabella Bencomo 916-724-9765, asking for the <br />status update for this complaint. Reviewed complaint details, called Isabella, <br />provided a brief update. Isabella asked to have the complaint record emailed to <br />isabella.bencomo@waterboards.ca.gov. <br />MANZO <br />11/24/2020 Sent an email to isabella.bencomo@waterboards.ca.gov letting her know we are <br />working on gathering complaint documents and will scan them to her once <br />completed. Discussed with Claudia Muro, concerning pictures and complaint <br />information to be provided to Isabella. <br />MANZO <br />Provided an update to M. Nisssim, program coordinator. <br />Received an email response from Isabelle:"Thank you for confirming this email <br />with me. I appreciate your diligence on updating me on these spills. " <br />12/01/2020 Sent Mike Algots an email request for analytical lab reults. MURO <br />12/02/2020 Completed photo logs from 10-24-2020 and 10-28-2020. Received lab results <br />from Leah Brinson (Union Pacific) and began review. <br />MURO <br />12/10/2020 Sent email request to Mike Algots (UP) for disposal records. MURO <br />Worked on photo logs from 10-24-20 and 10-28-20. <br />12/14/2020 Completed review of two lab reports received on 12/02/2020 from Leah Brinson MURO <br />(Waste Coordinator at GHD), email is Leah.Brinson@ghd.com. <br />Sample WR2668, dated 11-05-2020, were taken from the excavated soil for the <br />purpose of waste profiling. <br />Report dated 11/05/2020: <br />6010 Cam 17 = Chromium 153 mg/L, Lead 317 mg/L <br />Sample results were above the hazardous waste regulatory level for TTLC. <br />Sample underwent additional testing for TCLP and STLC. <br />Report dated 11/30/2020: <br />TCLP = Chromium 0.1 mg/L, Lead 0.1 mg/L <br />STLC = Arsenic 340 ug/L (0.34 mg/L), Chromium 397 ug/L (0.387 mg/L), Copper <br />2380 ug/L (2.38 mg/L), Lead 247 ug/L (0.247 mg/L) <br />Sample results for TCLP and STLC methods were below the hazardous waste <br />level. <br />5105.rpt Page 4 of 5