13026 Resubmission

Geotechnical Engineering Investigation Report JMA02P003.05- 08/19/2025 262-270 Main St or be frost-protected to at least this depth. Trapped moisture beneath foundations, if not adequately protected from frost conditions, may jeopardize the integrity of subgrade soils and associated structure. 4.4 Retaining Wall Recommendations The design of all retaining walls shall be designed by a Licensed Professional Engineer in the State of New Jersey. HE recommends the following parameters for retaining wall design: • Minimum Factor of Safety Against Sliding: 2 • Minimum Factor of Safety Against Overturning: 1.5 • See Foundation Recommendations for allowable bearing capacities. 4.5 Slab on Grade a. Proof roll area with a minimum of four (4) passes of heavy vibratory compactor with a minimum static drum weight of 12,000 pounds or equal. b. Any area which are observed to be soft or unstable should be removed and replaced with controlled fill and compacted as per recommendations in section 4.10 - Backfill c. Where compaction is preferred, use as modulus of subgrade reaction (k) of one hundred twenty (120) pounds per cubic inch (pci) for slab design. d. A minimum of six (6) inches of ¾” crushed stone should be placed under all slabs on grades. e. A 10 mil. Vapor barrier should be placed on the crushed stone. f. An under-slab drainage system is recommended due to the presence of ground water encountered 4.6 Parking and Driveway Area (If Required) a) Proof roll area with a minimum of four (4) passes of heavy vibratory compactor with a minimum static drum weight of 12,000 pounds or equal. b) Any area which are observed to be soft or unstable should be removed and replaced with controlled fill and compacted as per recommendations in section 4.10 - Backfill c) Subbase: Quarry Process Stone: 6” d) Base course: I-2 – 4” e) Surface Course: I-5-2” 4.7 Excavation 4.7.1 Pre-Excavation Recommendations Prior to foundation excavation work, HE recommends the following procedure: • Clear and grab all topsoil vegetation (including existing trees, roots, or any other vegetation) within the project site. ○ Topsoil, which was generally observed to

he following procedure: • Clear and grab all topsoil vegetation (including existing trees, roots, or any other vegetation) within the project site. ○ Topsoil, which was generally observed to be six (6) inches thick across the site, should be stripped and stockpiled discreetly for the duration of construction. ○ Stripped topsoil should be protected from erosion, managed in accordance with applicable ordinances, and should not be re-used as structural or fill material of any type. 4.7.2 Excavation Recommendations After the completion of the Pre-Excavation work, HE recommends the following: • Excavations extending deeper than four (4) feet should be sloped, benched, or supported in accordance with OSHA or local governing regulations; the more stringent requirements shall apply. • For shallow foundation construction, the base of the soil excavation should extend at least two (2) feet horizontally beyond the footings in all directions. 5