The Consultant selected by the City of Coralville will provide geotechnical engineering services including field exploration, laboratory testing, engineering analyses, and project delivery. The services will generally follow the FEMA Levee Accreditation Guidance in the Embankment Protection (44 CFR 65.10(b)(3)), Embankment and Foundation Stability Awareness (44 CFR 65.10(b)(4)), and Settlement Analysis (44 CFR 65.10(b)(5)) sections. The Project will include 15 geotechnical borings or Cone Penetration Tests (CPTs) along the designated area of the CRANDIC Railroad. For each of five cross-sections analyzed, three borings or CPTs will be drilled: one near the land-side toe, one at the top of the levee, and one near the river-side toe. The boring depth is 50 feet on the toe slopes and 15 feet at the top of the levee. Top of levee borings will be drilled between railroad ties. On the toe slopes, four soil samples will be obtained in the upper 10 feet and at intervals of 5 feet thereafter. From the top of the levee, six samples will be obtained in the upper 15 feet and at intervals of 5 feet thereafter. Borings and CPT holes will be backfilled with grout. Any holes through pavements will be repaired with concrete or asphalt. The contractor will endeavor to minimize damage to landscaping and the ground surface...
