LD2&3 Concrete Testing

The purpose of this Amendment is to include verbiage in the scope of work and in Clause 52.212-2, Evaluations. The following informatio has been included in the scope of work and within the Evaluation clause. " All lab testing must be accomplished via a certified U.S. Army Engineer Research and Development Center. The most current list of registries can be located at https://mtc.erdc.dren.mil/map.aspx." Clause 52.212-2, Evaluations has been updated to include technical evalaution.

The response date remains the same. The contractor will investigate and evaluate the interior concrete condition of the upper guide walls at LDs 2 & 3. The contractor will vertically drill and extract eight (8) – 4 inch diameter cores at each site, to a depth indicated within the Scope of Work, from LD 2 & 3. Contractor shall complete lab testing that includes inspection and documentation of each sample, full petrographic analysis of two cores at each site, and compressive strength testing of 10 cores. The results shall be compiled into a report, submitted to the District Concrete Materials Engineer within 90 days of contract award.