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Travis M. Coburn
<br />Project Manager
<br />City of Yorba Linda, New Library and Arts & Community Center, Yorba Linda, California: Mr. Coburn was the Project
<br />Manager for preparing a methane survey work plan and Implementation of a methane survey, The site is located within the
<br />boundaries of the Yorba Linda Oil Field; therefore, a methane survey was conducted prior to development in accordance with the
<br />City's Procedure No, 6, Methane Gas Investigation and Mitigation for Newor Existing Structures to be Expanded. Four nested soil
<br />vapor wells were installed within the proposed 65,000 square foot footprint In accordance with the Orange County Fire Authority
<br />Combustible Soil Gas Hazard Mitigation Guideline. Two rounds of field measurements were conducted to record soil vapor
<br />pressure, methane, hydrogen sulfide, and volatile organic compounds. Based on the methane survey detections and a review of
<br />the California Conservation Department Division of 011, Gas and Geothermal Resources Well Finder database, methane levels at
<br />the site did not require methane mitigation or pose a safety risk.
<br />City of Corona, Corona Crossroads Redevelopment Project, Corona, California: Engineer providing environmental consulting
<br />to the City of Corona during redevelopment of a former landfill site with Impacts to soil (lead) and soil vapor (volatile organic
<br />compounds [VOCs]). Mr. Coburn reviewed the developers soil management plan and provided comments and recommendations.
<br />The recommendations included environmental and regulatory compliance guidance and soil profiling and waste management
<br />strategies, Due to space and schedule constraints, Mr. Coburn recommended in-situ soli sampling to identify whether the soil
<br />planned for excavation on one side of the site could be reused as fill material on the other side, Mr. Coburn reviewed the
<br />Excavation Management and Sampling Reports and a Summary of Environmental Review letter prepared by the developers
<br />consultants and provided comments.
<br />City of Los Angeles Bureau of Engineering, Multiple On -Call Geotechnical and Environmental Engineering Services
<br />Contracts, Los Angeles, California: Mr. Coburn serves as a Task Manager for the environmental services portion of these on-
<br />call agreements with the Bureau of Engineering, Under the environmental portion of these contracts, Mr. Coburn provides task
<br />management and technical support for primarily Phase I and II ESAs, methane surveys, groundwater monitoring and sampling,
<br />remediatlon feasibility studies, and remedial action planning,
<br />City of Los Angeles CRAfLA— DLA, Wilmington Industrial Park Block 27 Redevelopment Project, Los Angeles, California:
<br />Mr. Coburn was the Project Manager and Project Engineer responsible for site investigation and remedial action work for the
<br />redevelopment of the industrial site in Wilmington. He negotiated with the regulatory agency, Los Angeles County Fire Department
<br />(LACoFD), and prepared and oversaw implementation of an additional assessment work plan to collect soil, soil vapor, and
<br />groundwater samples. He also wrote the Removal Action Work Plan (RAW) which has been approved by the LACoFD.
<br />City of Colton, Guyaux Landfill, Phase II ESA, Colton, California: Project Manager and Engineer for the preparation of a
<br />Phase II ESA Work Plan at a waste disposal site (WDS) measuring 4 acres to characterize and delineate the lateral and vertical
<br />extent of the wastes, Including additional investigation of previously identified "hot spot° areas of "soil' containing elevated lead
<br />concentrations. Based on information contained in the California Depatnentof Resources, Recycling and Recovery (CalRecycle)
<br />Solid Waste Information System (SWIS) database, the site was a pre -regulation, closed waste disposal site that reportedly
<br />ceased operations In December 1985. A work plan was prepared and submitted to the County of San Bernardino, Department of
<br />Public Health and to CalRecycle for review and approval. The Phase II ESA consisted of using a track -mounted excavator to dig
<br />approximately 22 trenches to evaluate the types and extents of wastes disposed of at the WDS as well as the potential presence
<br />and thickness of cover, if present. The results of the Phase II ESA were used to assist with evaluating whether the WDS would be
<br />capped/covered so the City could construct a soccer complex and community park,
<br />Travis M. Coburn, PE, QSD, Project Manager I Ninyo & Moere I Geotechracal 8 En*onmental sciences Consultants
<br />25F-51
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