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Ms. Betty Ho riE C E ®+E <br />December 20, 2017 DEC 2 12017 <br />ENVIRONMENTALgq��p��FnnHEALTH <br />requesting informatio /updates. UPRR requested United Pumping Services, Inc (PC1PP5)`Ti�tlFAi�Tdis to <br />respond to the limes ill. <br />RESPONSE OBJECTIVES <br />The response objectiZe <br />were to clean up visible spilled lime to the extent practicable and manage waste <br />generated by the res activities. <br />These objectives wer accomplished by removing the lime based on visual observations using a vacuum <br />truck and hand tools. In addition, the waste solid was profiled and transported to an off-site licensed <br />landfill for disposal. <br />SCOPE OF WORK CONDUCTED <br />The following lime cle nup and sampling activities were conducted at the Site on September 29, October <br />4, and October 5, 201 to meet the response objectives. <br />Initial Site Walk <br />On September 29, 2017, Arcadis and UPS mobilized to the Site and met with the SJCEHD. Arcadis <br />evaluated the spill ext nt and developed a spill cleanup plan and schedule with UPRR and SJCEHD. <br />Lime Removal <br />On October 4 and 5, 21017, Arcadis observed and documented UPS clean up the spilled lime using a <br />track -mounted vacuurr truck and hand tools. Wire mesh was used to cover the end of the vacuum hose <br />to prevent ballast rock from being removed. A photographic log of the lime cleanup activities is provided <br />in Attachment 1. <br />Approximately 2,400 flet of Track 038 were cleaned, from the Car Department/One Spot Facility to the <br />southern portion of the Stockton Yard where Track 038 connects to Lead Track 3. <br />Approximately 450 feel of Lead Track 3 were cleaned, from where it connects to Track 038 to the <br />southern portion of the Stockton Yard. <br />In addition, lime mated I was removed from portions of Tracks 005, 006, 007, 012, 013, 014, 015, and <br />Track 034. Two large p les of lime were also removed from Track 209. The extent of the cleaned track is <br />shown on Figures 3 a d 4. <br />Cleanup was consider d complete and approved by SJCEHD after their representative observed the <br />cleanup activities on O tober 5, 2017. <br />Waste Management <br />Waste material (lime ar d sediment) generated during the track cleanup activities was loaded into one bin <br />for disposal at a UPRR approved waste management facility. Waste characterization samples were <br />collected on October 5, 2017 and submitted to Pace Analytical Services, LLC, in Davis, California, and <br />Eurofins/Calscience in Garden Grove, California. The lime/sediment material was characterized as <br />non -hazardous waste based on waste characterization results. <br />arcadis.com Page: <br />2017.12.20—Stockton Sept 2017 Lime Ipill_Summary Ltr.docx 2/3 <br />