Topock In-Situ Groundwater Remediation System Construction

Final Groundwater Remedy Construction, Phase 1

PG&E Topock Compressor Station

PIVOX Corporation performed full turn-key construction of groundwater extraction, injection, and conveyance systems for an innovative in-situ bioremediation system as part of PG&E’s Topock Compressor Station Final Groundwater Remedy Construction program.  

PIVOX provided construction engineering, certified-CQM construction quality control, health and safety management, and on-site supervision and coordination of multiple PIVOX and subcontracted crews working simultaneously across a large and geographically challenging site under strict external stakeholder oversight and 100% QA oversight.

PIVOX installed over 50,000 linear feet of underground groundwater conveyance single- and dual-contained fusion-welded HDPE pipeline, ranging in size from 2” to 12”, in a wide range of challenging physical settings in the lower Mojave Desert.  PIVOX also installed utility vaults and well-head process piping at over 30 multi-boring and multi-screened groundwater extraction and injection wells.  Complex, multi-stream piping, tight site physical constraints, and challenging local soil conduits required PIVOX to design and build customized, site-specific vault, piping and conduit layouts at each location.

PIVOX navigated safety, schedule, and operational constraints associated with work in the desert summer where daytime temperatures regularly exceeded 110°F and maintained progress during the peak of the COVID-19 pandemic.  PIVOX implemented a worker body-temperature monitoring and work-break cycle to mitigate the risks associated with intense physical activity in very high ambient temperatures, and implemented new working measures, including minimizing indoor/office meetings, additional PPE, and social distancing practices to mitigate risk of worker COVID-19 exposure.  The work was completed without a single OSHA-recordable workplace injury or illness.