Agmt17 AECOM Technical Services, Inc.

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• Description and figures of the sampling locations, depths of samples to be collected, frequency of sampling, and other procedures, such as use of Terra Cores® for sampling for volatile compounds. • Description of the analytical procedures to be used. • Detailed sampling and analysis table to facilitate the field efforts and to minimize the potential for field errors. AECOM will implement the approved work plan as follows: • AECOM will use the Site-specific Project Health and Safety Plan for its fieldwork. • AECOM will work safely with field crews and subcontractors that have experience working in the Caltrans Right -of -Way and in accordance with the project's Caltrans encroachment permit. All personnel will have 40 -hours HAZWOPER training and required updates. Proper personal protective equipment will be worn by all staff during the fieldwork. • AECOM and its subconsultant(s) will develop a traffic control plan to be used during the field work for review and approval by Caltrans. • Soil and groundwater sampling will be conducted with a direct push rig to minimize field time and waste generation. Sampling equipment will be decontaminated between each sampling event. • AECOM staff will use preprinted labels and chain -of -custody forms to minimize the potential for field errors. • The samples will be maintained under AECOM chain of custody until transferred to the lab courier. • AECOM will use a California -certified lab for the analyses. • Analytical data will be reviewed by trained AECOM staff for QA/QC, and the data will be flagged in the data tables, if needed. • Waste soil from AECOM borings and decom water from the equipment cleaning will be drummed and left at a Caltrans -designated on-site location until sampled, analyzed, characterized and profiled for off-site disposal to a designated licensed landfill. AECOM assumes that Caltrans will provide a valid, active EPA ID number and sign hazardous waste manifests for off-site soil disposal of hazardous soils in a hazardous waste landfill, if the soils are characterized as hazardous. • Off -Site disposal of the investigation wastes and disposal loading oversight are included in this scope of work. AECOM will use a licensed hazardous waste Page 24 of 73 REV: 07-18-17 PR ATTY/AGR.2017.166/AECOM 101/84 ME