Email: info@p2penv.com phone: (678) 565-4440

Geotechnical Investigations

Point to Point Environmental offers geotechnical investigation services in addition to site soil and groundwater assessments and wetlands delineation. Geotechnical investigations can be completed for properties ranging from residential to commercial and industrial projects. Point to Point to Environmental can install soil test holes, soil borings, conduct rock investigations and rock coring, install piezometers and groundwater monitoring wells, and collect soil samples for laboratory analysis.

 

Soil and groundwater assessments conducted as part of a geotechnical investigation focus on the specific geotechnical parameters as specified by the engineering and construction requirements and the associated lithology of a property. The geotechnical investigations include the installation of soil test holes, soil borings, piezometers and groundwater monitoring wells. Soil borings are installed utilizing a variety of drilling technologies, selected based on site specific requirements. Soil samples are collected during the drilling activities at specified locations and depth intervals. During a geotechnical investigation, soil samples are collected at set intervals and depths as specified by the engineering and construction requirements. Additionally, soil samples are collected based on observed site conditions and parameters as measured during the drilling process. These samples can be analyzed for geotechnical parameters and other analyses at a certified materials testing laboratory including:

 

• Particle size and suspended particle size
• Sieve analysis
• Specific gravity
• In place or bulk density
• Moisture content
• Organic content
• Atterberg limit
• Proctor compaction

 

Point to Point Environmental staff collect detailed field parameters, and observations are recorded during the boring and/or drilling activities to be included within thorough soil boring logs and rock coring logs that are prepared for inclusion within report documentation. During the drilling activities, standard penetration testing (SPT), cone penetration (CPT), test soundings, and down-hole geophysical surveys can be used to evaluate subsurface characteristics. The locations of soil test holes, borings and groundwater monitoring wells are added to the site plan and vertically surveyed so that the depth to groundwater/groundwater elevation can be used to calculate the direction of groundwater flow and hydraulic gradient at a site. Piezometers or groundwater monitoring wells can also be used to calculate groundwater recovery rates and slug tests for calculations of hydraulic conductivity by performing draw-down or pumping tests using down-hole pumps and pressure transducers. Piezometers or groundwater monitoring wells may be installed and left in place to provide long-term groundwater elevation data, to conduct seasonal pumping tests, or to assist with dewatering activities to facilitate construction and excavation. Dataloggers can be installed to collect long term groundwater elevation data.

 

Point to Point environmental also partners with local subcontractors to provide seismic refraction and reflection to investigate buried structures and conduct bedrock mapping, and soil resistivity testing for cathodic protection and electrical grounding requirements. Point to Point Environmental conducts geotechnical investigations to meet our clients’ needs and to gather the data required. If you have questions about the geotechnical investigation process please contact Point to Point at 678-565-4440.