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6,000 Environmental Remediations Since 1975

Remtech © 2017

HC-2000 UST Gasoline BioSparge Remediation

Web Inquiries: 770-427-7766 Extension 4

Fax: 770-427-7001


Copyright Remtech Engineers, 2017

Remtech EngineersTM

200 Cobb Parkway North

Suite 208

Marietta, Georgia 30062

Phone: 770-427-7766 or 800-377-3648




Location: Chicago, Illinois

Client: Freight Distribution Center

Contract Amount: $20,000


An underground storage tank pit was contaminated with dissolved  gasoline analytes following removal and backfill of a 10,000 gal UST that prevented closure of the site..  


Sixteen (16) biosparge points were driven into groundwater through a pea gravel/colloidal clay matrix.  Remtech’s native bioremediation accelerator HC-2000 was injected on a weekly basis topically and

through the sparge tips.  A compact air and HC-2000 injection system was used to pulse air and enzyme into the tank pit.

At the end of a six (6) week treatment period, heterotrophic plate counts jumped to severalmillion CFU/ml. Groundwater BETX analytes were reduced  - 98% for benzene, 96% for

ethylbenzene, 99% for toluene, and 94% for total xylenes.  


The tank pit was closed that prevented additional treatment and minimized additional facility operational interuptions.

BioSparge Injection System at Freight Terminal

BioSparge Injection Grid

BioSparge Injection Probes Driven with Electric Jackhammer