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r7l <br />Environmental Consulting Services <br />Prepared exhibits for and provided support in the preparation of ALUC processing for River Park <br />development project on Mission Gorge Road In San Diego near the Montgomery Field airport <br />operated by the City of San Diego. <br />Chambers Group is currently working with Rick Engineering on a Whitewood Road project in the City of <br />Murrieta and a Trabuco Canyon project. <br />Leighton Consulting, Inc. (Leighton) provides geotechnical and <br />environmental solutions to public agencies, property owners, and <br />facilities. We provide a balanced team of geotechnical engineers, <br />Leighton Consulting, Inc. engineering geologists, and environmental specialists experienced in <br />A CCe011104 OROVA COVPA4, Identifying and mitigating geotechnical and geologic hazards, and <br />investigating and remediating environmental hazards. We help clients stay compliant and keep their <br />projects moving forward through the regulatory processes. <br />Leighton's experience includes thousands of projects, resulting in a comprehensive understanding of <br />the geology, geotechnical, and environmental nature of the urban environment. This directly benefits <br />Environmental Impact Report (EIR) efforts because our geotechnical and environmental conclusions are <br />often based on site-specific prior explorations instead of solely relying on published data. The depth and <br />breadth of our prior investigation experience can result in more accurate preliminary conclusions and <br />recommendations. Leighton's database of subsurface information is probably unmatched by any other <br />geotechnical consultant in southern California. We also have a broad understanding of contaminants, <br />transport, and impacted media, and communicate the concerns and solutions to the stakeholders, <br />regulatory agencies, and the public. <br />Leighton has successfully completed work and provided input for hundreds of EIRs and related studies <br />throughout the region. Such studies have been provided for water reservoirs and distribution facilities, <br />large-scale drainage improvements, master-planned communities, new highway improvements, and <br />retail commercial and industrial developments. This experience gives Leighton the ability to recognize <br />significant geologic/environmental conditions for sites while developing realistic and effective <br />measures to reduce the impact to the public and the environment. <br />Leighton's Experience with City <br />Leighton has worked with the City of Santa Ana under as-needed contracts since 2003, including our <br />current on-call contract for environmental assessment. Over the years, we have provided Phase I and 11 <br />ESAs and remediation services for various projects, assisting in the development and redevelopment of <br />commercial properties, roadways, and parks. For example, Leighton worked diligently with the City and <br />Water Quality Control Board-Santa Ana Region (RWQCB) to obtain a "No-Further-Action" letter for a <br />property acquired in preparation for the Bristol Street Widening for the Centerline Light Rail project. <br />Our services included a Phase I ESA, which uncovered three underground storage tanks (USTs), and <br />subsequent Phase It ESA. Leighton also completed both Phase I and 11 ESAs for the Alton Avenue <br />Overcrossing at the SR-SS freeway. In addition, for the MacArthur Boulevard On-Ramp Widening, <br />Leighton prepared an Initial Site Assessment (ISA) report, as well as a geotechnical design report and <br />materials report for the improvements. <br />Other projects Leighton has performed for the City of Santa Ana include the following: <br />® Police Training Facility A 1249 West 1st Street Site Investigation <br />o Jack N' the Box Phase 1 ESA/Well a Santiago Retaining Wall Evaluation <br />- CHAMBERS <br />25D-50