Tierra South Florida, Inc. (TSF)

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RFQ# 18-05-24 Architectural and Engineering Consulting Services: Construction Testing and Inspections RFQ# 20-70-01 Continuing Professional Consulting Services Project Title: PALM BEACH COUNTY ROADWAY ANNUAL TESTING LABS CONTINUING CONTRACT Client Name, Address, Contact, Phone & Email Address: Ms. Tanya McConnell, P.E., Deputy County Engineer 2300 North Jog Road, 3rd Floor, West Palm Beach, FL 33411 Phone: (561) 684-4019 / Email: Tmcconne@pbcgov.org Description of Work Performed: Geotechnical Engineering, Construction Material Testing, and Inspection Services Year Completed / Contract Term: On Going Since 2008 - Current Contract Expires Nov. 2020 Amount of Contract Award: $1,327,735.50 to date *Total PBC Annual Contracts Combined ** See below for more detailed description of work performed, including project location Mast Arms Flashers on Mast Arms at Five Schools, Palm Beach County, Florida: Provded geotechnical engineering services for the safety improvements project in Palm Beach County, Florida. The project also included school flashers on mast arms at five school approaches. The purpose of the study was to provide Geotechnical input to the design team to assist in evaluation of the merits of the potential mast arm installations. Field work included SPT borings. Groundwater levels were measured at the time of drilling. Visually classified and stratified the samples in the laboratory using the ASTM Unified Soil Classification System (USCS) and performed a limited laboratory testing to establish the soil properties. The laboratory testing included grain size analysis, moisture content determination, organic content tests, and corrosion test. Prepared Geotechnical Report summarizing the course of study pursued, field data, subsurface conditions, and recommendations regarding foundation design and drilled shaft construction. Completed on time and within budget in 2016 West Atlantic Avenue and Florida's Turnpike Intersection Improvements, Palm Beach County, Florida: Performed a geotechnical engineering study for the roadway improvement project at West Atlantic Avenue and Florida’s Turnpike Intersection. The project included the replacement of the mast arm signalization structures at the NE and NW corners of Turnpike northbound on-ramp and Atlantic Avenue, bridge widening on the north side of an existing bridge, and a right-turn lane addition on the westbound of Atlantic Ave. Field work included auger borings and SPT borings. Provided report detailing subsurface conditions, groundwater, and seasonal high groundwater estimates. Also provided geotechnical recommendations regarding soil suitability, permanent cut/fill slopes, excavations, soil parameters for mast arm foundation design, drilled shaft construction, bridge foundation design, concrete pile installation, and test pile program. Performed axial pile capacity analysis using FB-DEEP and provided soil parameters to be utilized by the design team for FB-MultiPier (lateral stability) analysis and for back wall design calculations at end bents. Completed on time and within budget in 2016 6th Avenue South over Lake Osborne Drive Bridge Replacement – Alignment and Bridge Alternatives Study, Palm Beach County, Florida: Performed a geotechnical engineering study for the bridge replacement project located at 6th Avenue South over Lake Osborne Drive in Palm Beach County, Florida. The purpose of the study was to provide preliminary geotechnical input to the design team to assist in evaluation of the merits of the potential bridge replacement. Field work included SPT borings. TSF provided a preliminary geotechnical engineering report, which summarized the course of study pursued, the field and laboratory data generated, the subsurface conditions encountered and preliminary geotechnical recommendations for the bridge alternatives study. Completed on time and within budget in 2017 80