Specifications include, but are not limited to: Materials Testing services and Construction Administration and Inspection services for multiple location light rail extensions on an on-call basis. Scope of work may include, but is not limited to: geotechnical investigations, geotechnical and materials testing; laboratory and field testing of soil, concrete and asphalt; plant inspections; analyses and preparation of reports; and daily oversight to ensure compliance with City of Phoenix, Maricopa County and Valley Metro standards, policies and guidelines. Materials testing will include roadway, alley, water, sewer, dry utilities, landscape and irrigation, irrigation facilities, storm drain, retentions, embankments, earthwork, trenching, grading, soil treatments, masonry, structural steel, bridge/structures, sidewalk, ADA ramps, Curb & Gutter, and driveways for compliance with standard details, specifications and approved plans.