Item 17 - Agreements for On-Call Geotechnical Engineering Services

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City of Santa Ana RFP 23-123 — On -Call Geotechnical Engineering Services � EOCON CITY OF GARDEN GROVE ON -CALL GEOTECHNICAL SERVICES GARDEN GROVE, CALIFORNIA Geocon currently holds an on -call geotechnical, materials, testing and inspection services contract with the City of Garden Grove. We have completed numerous pavement restoration projects including arterial streets, residential roads, storm drains, and a variety of public improvement projects. Some of these projects are summarized below: VARIOUS RESIDENTIAL AND ARTERIAL STREETS IMPROVEMENTS PROJECTS REFERENCE City of Garden Grove 11222 Acacia Parkway, P.O. Box 3070 Garden Grove, CA 92842 Navin Maru Project Engineer (714)741-5600 navinm@ggcity.org KEY PERSONNEL Jelisa Thomas Adams, GE John Stapleton, PE PROJECT DURATION May 2020-Ongoing GEOCON FEE $224,200 Geocon provided testing and observation services during the street improvement project in the City of Garden Grove. The project would result in an improved roadway surface and minimize maintenance efforts. The purpose of the testing and observations was to determine that the specifications required for the project were met. We performed in -place density tests, laboratory tests, and prepared a report summarizing our testing and observation findings. Geocon concluded that the preparation of the paving subgrade soils and the placement of engineered materials had been performed in substantial conformance with the requirements of the City of Garden Grove and the project plans. VARIOUS STREETS AND STORM DRAIN IMPROVEMENTS Geocon performed a limited geotechnical investigation as part of the Acacia -Josephine Storm Drain Project for our on -call contract with the City of Garden Grove. The project was to improve the street pavement, which had rutting and cracks, as well as adding a storm drain to improve poor drainage conditions. The planned rehabilitation is meant to extend the roadway to meet a 20-year design life. During the investigation we performed a site reconnaissance, a visual evaluation of the existing pavement conditions, coring of the existing pavement, advancing borings, sampling the subgrade soils and groundwater, laboratory testing, and engineering analysis. Geocon found that the roadways showed signs of moderate to severe distress, potholes, and raveling. Our reconnaissance observed streets that had ponded water, likely due to poor drainage. Geocon's opinion was that the construction of the proposed improvements could be performed provided their recommendations were followed and implemented during construction. ACACIA-JOSEPHINE STORM DRAIN UTILITY POTHOLING Geocon performed potholing services for the Acacia -Josephine Storm Drain project in the City of Garden Grove. The purpose of the work was to obtain the size and type of pipe, measure the depth of cover from finished grade to the top of pipe; and measure horizontal control from centerline of the streets. After the utilities were exposed and the desired measurements obtained the surface was restored with asphalt or concrete. The project is currently under construction and Geocon has been retained to provide geotechnical and special testing and inspection services. Geocon 2023-333 Page 22 August 28, 2023