GMU provided pavement engineering services, consisting of a pavement evaluation and materials report pertaining to the rehabilitation of Jeffrey Road from Walnut Avenue to Trabuco Road in the City of Irvine. Our engineering services included a visual pavement condition survey, in-place falling weight deflectometer (FWD) testing, asphalt coring and sampling, laboratory testing, and engineering analysis with a report. Since the subject pavement within the project limits exhibited some further degradation, GMU was subsequently requested to address rehabilitation changes due to further pavement degradation observed since our reference report was issued.

GMU provided geotechnical engineering and construction observation and testing services for the new construction of these two large retail centers, containing major parking lot areas, in Ladera Ranch. Conventional structural design for drive and parking bay asphalt pavement, along with concrete interlocking paver design were performed. Observation and testing of the subgrade, aggregate base, and asphalt concrete for the pavement was performed under the supervision of the County of Orange Grading Department.

GMU provided both pavement engineering along with construction observation and testing services for the La Paz Road Pavement Rehabilitation project, from Kings Road to Aliso Creek Road, located in the City of Laguna Niguel. Our engineering services included a visual pavement condition survey, in-place falling weight deflectometer (FWD) testing, asphalt coring and sampling, laboratory testing, and engineering analysis with a report. The construction of the project consisted of cold planning the existing pavement along gutter and median curb, grinding out and replacing variable width conventional 3/4–inch AC to a depth of 12-inches, placing variable depth conventional 3/8-inch AC leveling course, and placing a rubberized asphalt concrete 2-inch-thick overlay on the entire width of the subject portion of La Paz Road.

GMU worked on the geotechnical investigation and design of the County’s La Pata Gap Closure project intermittently since the initial feasibility studies in 2003. GMU’s investigation and design services address large-scale landslides, complex slope stability analysis, extensive grading, deep fill settlement, bridge foundation design, and pavement design. Pavement engineering services involved asphalt coring and sampling, laboratory testing, and engineering analysis. The pavement design incorporated the use of warm mix asphalt, rubberized asphalt, and pavement interlayer mat for asphalt overlay.

GMU provided pavement engineering, construction observation and testing, and construction management services for these projects. Our engineering services included a visual pavement condition survey, in-place falling weight deflectometer (FWD) testing, asphalt coring and sampling, laboratory testing, and engineering analysis with a report. The numerous private street areas (13) involved in the subject pavement rehabilitation projects utilized both deep lift AC repair and full depth reclamation (FDR) methods for the repair of the distress existing in portions of the street areas. The FDR procedure consisted of 1) cold milling the subject street areas a minimum of 3 inches, 2) pulverization of the remaining AC into the upper 15 inches of the subgrade soil materials, mixing in Portland cement and moisture conditioning subgrade, and compacting, 3), curing of FDR base layer, 4) micro-cracking of FDR base layer, and 5) placement of AC materials.