Agenda - Public Works Committee - 04/16/2024

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1.4 Scope of Services Our scope of services was performed in accordance with the City of Ramey REQUEST FOR PROPOSAL, 2024 STREET IMPROVEMENTS issued on October 18, 2023. Our scope of service for "City Project IP 24-03 Residential Street Reconstruction' included the following tasks: • Performing 24 standard penetration test borings each to a nominal depth of 10 feet. • Obtaining 24 pavement cores to measure the thickness of the existing bituminous and aggregate base. • Visually/manually classifying samples recovered from the soil borings. • Performing laboratory tests on selected samples. • Preparing soil boring logs describing the materials encountered and the results of groundwater level measurements. • Preparing an engineering report describing soil and groundwater conditions and providing estimated subgrade R-Values, and recommendations for roadway construction/ reconstruction. 1.5 Documents Provided We were provided with a 5-page Request for Proposal (RFP) prepared by Hakanson Anderson and the City of Ramsey. The RFP included but was not limited to; a scope of services, soil boring requirements, pavement core requirements and a project schedule. The RFP also included soil boring location sketches that showed the proposed streets slated for improvement along with the proposed boring locations. 1.6 Locations and Elevations The boring and core locations were selected by Hakanson Anderson and marked in the field in advance our field work. The approximate boring and associated core locations are shown on the Figures in the appendix. These figures were provided by Hakanson Anderson and were included in the RFP. Ground surface elevations at the boring locations were estimated based on topographic information obtained through the Anoka County GIS website. Ground surface elevations at the boring locations should be considered approximate. 2.0 FIELD PROCEDURES The 24 standard penetration test borings were advanced on December 19th and 22nd, 2023 and January 3rd and 10th, 2024 by HGTS with a rotary drilling rig, using continuous flight augers to advance the boreholes. Representative samples were obtained from the borings, using the split - barrel sampling procedures in general accordance with ASTM Specification D-1586. In the split - barrel sampling procedure, a 2-inch O.D. split -barrel spoon is driven into the ground with a 140- pound hammer falling 30 inches. The number of blows required to drive the sampling spoon the last 12 inches of an 18-inch penetration is recorded as the standard penetration resistance value, N