2000 TOWER ST INDEX HALL 2023-12-29

APPENDIX A FIELD EXPLORATION PROCEDURES AND LOGS PROJECT NO. 21-0101 The following paragraphs describe the procedures used for field explorations and field tests that MPE conducted forth is project. Descriptive logs of our explorations are enclosed in this appendix. HAND BORING PROCEDURES Our exploratory hand borings were excavated with a hand auger operated by a geotechnical engineer. A geotechnical engineer from our firm continuously observed the hand boring excavations, logged the subsurface conditions, and obtained representative soil samples. All samples were stored in watertight containers and later transported to a laboratory for further visual examination and testing. After we logged each hand boring, the geotechnical engineer backfilled it in lifts and compacted each lift to a firm or firm and unyielding condition. The enclosed Hand Boring Logs indicate the vertical sequence of soils and materials encountered in each hand boring, based primarily on our field classifications and supported by subsequent laboratory examination and testing. Where a soil contact was observed to be gradational or undulating, our logs indicate the average contact depth. We estimated the relative density and consistency of the in situ soils by means of the excavation characteristics and the stability of the hand boring sidewalls. Our logs also indicate the approximate depths of any sidewall roving or groundwater seepage observed in the hand borings, as well as all sample numbers and sampling locations.