GSI Mid-Atlantic, Inc. has added a Geoprobe 54lt to it’s fleet. The 54lt is a capable limited access and low clearance machine. The machine will fit through a standard 36″ doorway allowing access to inside most buildings, as well as through small fence openings and other narrow previously inaccessible areas. Our 54lt is equipped with a low clearance probe cylinder that allows the machine to operate with under 8′ of overhead clearance, perfect for low parking garages and inside of buildings.
GSI utilizes Geoprobe equipment to collect sediment samples from the bottom of Baltimore’s Inner Harbor. The Geoprobe tooling was lowered through holes cored in a concrete industrial pier that extended out into Baltimore’s Inner Harbor. Once the bottom was encountered the tooling was advanced into the bottom sediments. A modified core catcher was utilized in the sample liners to allow the soft sediments to enter the sample barrel, but still prevent sample loss upon retrieval.
GSI continues to keep it’s Geoprobe fleet up to date. Taking delivery of Geoprobe 6620DT. After a complete refurbish, the Geoprobe 6620 returns to GSI better than new. Complete restoration with the addition of all the modern upgrades makes this workhorse better than when it was brand new. The 6620dt will compliment our fleet of Geoprobe 7822 machines, as well as our truck mounted machines.
September found GSI Mid-Atlantic, Inc. completing work on two different landfill sites in Maryland.
On the first site, GSI was contracted to complete continuous soil borings at an inactive landfill site in Anne Arundel County. Using the Geoprobe dual tube 22 system and one of our Geoprobe 7822 machines, GSI successfully completed 13 soil borings ranging in depths from 55’ below ground surface to 75’ below ground surface. The purpose of the borings were for logging and identifying specific zones and geologic layers in the subsurface. During boring advancement, GSI successfully collected groundwater samples from multiple water bearing zones as identified by the on-site geologist. Below is a photo of soil cores from a 75’ boring. All borings were pressure grouted upon completion.
GSI was also contracted to install landfill gas monitoring wells along the perimeter of 2 landfills in Howard County. In a single day, GSI installed 3 landfill gas monitoring wells ranging from 20 to 35 feet below ground surface. Wells were installed using the Geoprobe dual-tube 32 system. This system creates a 3.5” borehole while continuously sampling the soil. Half-inch PVC well-screen and riser were installed though the casing. As seen below, the gravel pack was placed through the casing as the casing was removed. Each landfill gas monitoring well was completed with steel stick-up protection.
