Brice has invested in technologies to provide value added environmental support services for our clients. By coupling ultraviolet optical screening tool technology (UVOST) and direct-push drilling services, we reduce risk, enhance data quality, and maximize field productivity for all phases of environmental work from initial investigation through remediation.
Chemical injections—Brice’s injection probes can penetrate the subsurface using a Geoprobe unit to specific target depths. To perform injections, chemicals are then pumped through the probes using a ChemGrout 550A injection pump. Our experience with chemical injections has demonstrated an average production rate of 12 to 16 20-ft injection probes per day, with the ability to pump up to 1,600 gallons of chemical reagent in a single day.
Brice specializes in the use of UVOST technology to determine the horizontal and vertical extents of contamination. UVOST uses laser-induced fluorescence to detect and measure fuel constituents in soil, in real time during site investigations, allowing us to reduce project costs for our clients and customers.
Specifically, the real time data ensures that samples are collected at locations that provide the maximum benefit in support of data quality objectives and the development of accurate conceptual site models, which are critical for regulatory approval. Brice has completed UVOST investigations at nearly 20 sites throughout Alaska for our federal clients.
Brice’s equipment fleet includes Geoprobe™ 6610DT and Geoprobe™ 6620DT direct-push tracked vehicles and a portable Geoprobe™ 540MT direct-push drill rig. Direct-push drilling uses percussion power to “hammer” sampling equipment into the subsurface to extract soil and groundwater for laboratory analysis. The tracked Geoprobe offers several advantages: it can used in hard-to-reach locations; the low-ground pressure, tracked components ensure minimal impact to the environment; and the Geoprobe rigs minimize soil waste generated during drilling, resulting in a direct cost savings for our clients and customers.
The Geoprobe™ 6610DT and 6620DT can also install temporary and permanent groundwater monitoring wells. The subsurface is drilled with 3.25-in (DT325 system) or 4.5-in (DT45) probe rods and 1.5-in or 2.0-in inner diameter pre-packed well screens are lowered and secured in-place with PVC risers. Wells can be temporarily developed, sampled, and then removed or permanently developed for multiple groundwater sampling events.