Amendment No 1 to PSA - Bendix Dr. Improvements (Lathrop to Voorde) Proj No. 122-047 - DLZ

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3 of 12 Supplemental Agreement No. 1 XI. Add Items 2 & 3 to Appendix “A”, Section J, as follows: 2. The CONSULTANT shall perform the following tasks for the proposed basin location: a. Additional Project Management: This task includes all file management, subconsultant management, review of project budget, and general project management activities associated with the preparation of the CE document. b. Perform additional field reconnaissance to verify that the INDOT Level 2 CE impact criteria and thresholds would not be exceeded by the project, and to collect information on resources within the project area. c. Update preliminary resource information about the project and project area including supporting maps and photographs (aerial and ground). d. Prepare an addendum Red Flag Investigation (RFI) using the current INDOT template, including IDEM Virtual File Cabinet Data review. The RFI was approved for the original scope of services on April 19, 2023. e. Update Section 106 Minor Projects Programmatic Agreement submittal for added basin and submit to INDOT. The original scope of services required a Category A submittal. A Category B submittal is now required due the added basin and archaeological requirement for work in potentially undisturbed soils. 3. The CONSULTANT shall perform a Phase Ia Archaeological Investigation: a. Conduct a literature review to check the State Historic Architectural and Archaeological Research Database (SHAARD) files and other resources at the Indiana Department of Natural Resources – Division of Historic Preservation and Archaeology (DHPA) to determine if any investigations have been conducted within the study area, and if previously identified sites are located within the project area. The records check study area will extend for 0.8 kilometers (0.5 miles) surrounding the project area. b. A standard methodology for a Phase Ia Archaeological survey includes surface collection/survey and the excavation of shovel test probes (STP). Surface collection/survey occurs when there is at least 30 percent surface visibility and well weathered surface conditions, generally within agricultural fields. The area is examined via pedestrian survey, with transects spaced at no more than 10-meter (32.8- foot) intervals. When subsurface testing is required, STPs are placed at 15-meter (50- foot) intervals along systematically spaced transects. In areas where sites are identified, the interval will be reduced to 5 meters (16.4 feet) to better defined site boundaries, artifact distributions, and to identify possible feature remnants. STPs will be 30 centimeters (12 inches) in diameter and extend to a depth to penetrate the subsoil by at least 5 centimeters (2 inches). Soil will be examined via screening through 0.64-centimeter (0.25-inch) mesh hardware cloth. Soil and sod will be replaced following the completion of the STP. c. STP information will be recorded on standardized forms, with notes regarding soil color, texture, depth, inclusions, and artifact content. Photographs will be taken of the project area, sites encountered, and representative STPs. Archaeological sites identified during the survey will be mapped and photographed in the field, and GPS will be used to record locations. In addition, cultural artifacts encountered will be collected for analysis. If large numbers of artifacts, particularly historic artifacts, are encountered, or if large bulky artifacts are encountered, notes and photographs will be taken regarding the resources, but discretion will be used in collecting these items.