2600 FEDERAL AVE 2021 PORT OF EVERETT 2025-09-29

Substantive Requirements Review Landau Associates third boring (MIE-SB-11) in several locations, but encountered refusal at 2.5 to 4 ft bgs. Summary logs of the subsurface conditions observed are included in Appendix A. Subsurface conditions in boring MIE-SB-1 were observed to consist of approximately 5 ft of dense, sandy gravel and concrete debris, underlain by approximately 2.5 ft of medium dense, silty sand. Loose wood chips with brick debris were observed beneath the sand and extended to approximately 20.5 ft bgs. The wood chips were underlain by loose sand with silt that extended to 25 ft bgs. Medium dense sand with trace wood was observed beneath the loose sand and extended to the maximum depth explored (31.5 ft bgs). Subsurface conditions in boring MIE-SB-2 were observed to consist of approximately 6 ft of stiff, sandy silt, underlain by approximately 4 ft of loose to medium dense wood chips and asphalt debris. Approximately 5 ft of medium dense sand was observed beneath the wood chips and debris. The layer of medium dense sand was underlain by 5 ft of very loose, silty sand, further underlain by very loose sand with trace wood, which extended to the maximum depth explored (26.5 ft bgs). Subsurface conditions in boring MIE-SB-3 were observed to consist of approximately 15 ft of very soft to hard, sandy silt with varying amounts of construction debris. Loose to very dense sand with variable silt and gravel content was observed beneath the sandy silt and extended to 25 ft bgs. The sand was underlain by 5 ft of medium dense, sandy, silty gravel, further underlain by medium dense, silty sand with brick debris, which extended to the maximum depth explored (31.5 ft bgs). Subsurface conditions in boring MIE-SB-4 were observed to consist of approximately 5 ft of dense, sandy, silty gravel with concrete and wood debris. Medium stiff to stiff, sandy silt with variable amounts of construction and wood debris were observed beneath the gravel and extended to 15 ft bgs. The sandy silt was underlain by loose to medium dense, silty sand with variable amounts of gravel and concrete and wood debris. The silty sand extended to the maximum depth explored (31.5 ft bgs). Subsurface conditions in boring MIE-SB-5 were observed to consist of approximately 5 ft of loose, sandy gravel with concrete debris and silt. Approximately 2 ft of very loose, silty sand with trace gravel was observed beneath the gravel.The silty sand was underlain by approximately 3 ft of soft, very sandy silt with trace gravel, further underlain by 5 ft of very loose, very silty sand with trace gravel and wood. The silty sand layer was underlain by soft to medium stiff silt with variable amounts of sand, gravel, brick debris, and wood. This unit extended to approximately 30.5 ft bgs and was underlain by a 6-inch lens of sawdust. The sawdust was further underlain by medium dense sand with trace gravel that extended to the maximum depth explored (31.5 ft bgs). Subsurface conditions in boring MIE-SB-6 were observed to consist of approximately 7 ft of medium dense sand, underlain by approximately 2 ft of medium dense, silty sand with organics. Loose to medium dense sand with gravel and organics was observed beneath the silty sand and extended to 16 ft bgs. The silty sand was underlain by a very thin peat lens, followed by loose sand with silt that Geotechnical Engineering Report 0121049.040.041 Norton Terminal Development&MTCA 3rd Interim Action 2-3 May 7,2021