Geotechnical Engineering Report 12 10 2024 submission

Mavis Store #2296 December 10, 2024 ECS Project No. 44:2100 Page 6 Soils encountered were visually classified during borehole logging on the basis of texture and plasticity in general accordance with ASTM D2488 – Standard Practice for Description and Identification of Soils (Visual-Manual Procedures) and use of Unified Soil Classification System (USCS) symbols. After classification, the samples were grouped in the major zones noted on the Generalized Subsurface Cross- Sections A-A’ through B-B’ in Appendix A and the exploration logs in Appendix B. The group symbols for each soil type are indicated in parentheses along with the soil descriptions. Divisions between strata on the exploration logs are approximate; in-situ, the transitions may be gradual. 3.2 GROUNDWATER OBSERVATIONS Water levels were measured in our boring logs in Appendix B. Groundwater was not observed within the borings at the time of drilling and backfilling. However, it must be noted that variations in perched water levels and long-term water table may occur as a result of changes in precipitation, evaporation, surface water runoff, construction activities, and other factors. 3.3 LABORATORY TESTING The laboratory testing consisted of index property tests performed on selected samples obtained during our field exploration operations. Each laboratory test was completed in accordance with the applicable ASTM Standard Test Method as indicated below and on the laboratory testing sheets included in Appendix C.  ASTM D2216: Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock Mass  ASTM D4318: Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils  ASTM D6913: Standard Test Methods for Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis  ASTM D1557: Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3))  ASTM D1883: Standard Test Methods for California Bearing Ratio (CBR) of Laboratory- Compacted

Modified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3))  ASTM D1883: Standard Test Methods for California Bearing Ratio (CBR) of Laboratory- Compacted Soils Soil samples from this exploration program will be retained in our laboratory for a period of sixty (60) calendar days from date of collection, corresponding to the date of completion indicated on the exploration logs. After this time, the samples will be discarded unless other instructions are received from Mavis regarding their disposition in advance.