• Site At-a-Glance

Malone Superfund Site

PNL's Role

PNL performs as the PRP group's Project Coordinator, Construction Coordinator and overall technical manager at this large, complex Superfund Site, where the PRP group include nearly 25 companies.

Malone is a 150-acre former oil recycler site in Texas City, TX, where the EPA selected remedy involves the stabilization of over a quarter-million cu.yds. of oily sludges, followed by their placement and compaction in a RCRA cell. PNL oversaw the RI/FS for the Site and coordinated NRD evaluation and settlement. PNL negotiated the detailed remedy scope with US EPA during 2010 and 2011. Extensive treatability testing activities were performed to prove the feasibility of stabilizing the wastes. In 2011, PNL managed all aspects of EPC resource selection. We completed negotiations on a SOW and contract for the remedial action phase. During 2012 we started implementation of the Remedial Design/Remedial Action phase, during which PNL expanded its services to include Construction Management.

Health and Safety Metrics

  • Nearly 200,000 man-hours has been completed during the RD/RA
  • OSHA Recordables: 0
  • Lost Time/Lost Work Day Incidents: 0

Technical Milestones

The RD/RA is a design-build project being conducted in 3 Phases. After development and EPA approval of General RD/RA Work Plans (as well as 13 supporting plans such as HASP, CQAP, Air Monitoring, Hurricane Protection Plan, etc.) which described the overall project approach, Phase One plans were submitted and approved. Phase One work included:

  • Design Investigations
  • AST and Building Demo
  • Solidification Treatability and Pilot Study

Phase Two began in 2015 and included:

  • Soil remediation (200k cy)
  • Sludge solidification (300k cy)
  • RCRA cell construction (30 acres)
  • Slurry wall installation

Phase Three is expected to be completed in late 2017 and includes:

  • Final grading and vegetation
  • Shoreline Protection
  • Monitoring Well Installation

The RD/RA will be followed by a long-term O&M phase to ensure the protectiveness and effectiveness of the Site remedy.

Initial design investigations identified water management to be a critical item during the remedy implementation. This was further brought into focus as a result of the strong El Nino observed during construction. PNL coordinated several, key investigations into alternatives including; modifications to the solidification methodology to allow in-situ mixing and capping the solidified material in-place, the options and expected outcomes of the refurbishment and operation of injection wells, on-Site treatment alternatives for various waters, expanding storage capacity for cost-effective water management and use of a temporary, spray-on polymer to reduce contact water volume.

PNL assisted the Supervising Engineer in obtaining EPA approval for modifications to Performance Specifications for the solidified waste, and modifications to the reagent mix, all of which resulted in cost avoidance and schedule efficiency. PNL also assisted EPA in developing an Explanation of Significant Difference for the operation of the injection wells.

Stakeholder Relations

PNL also coordinated the relocation of a cemetery from the mid-1800's located the Site, to an off-Site, perpetual care cemetery. This prevented the remedy construction from potentially damaging the cemetery and provided descendants a respectful setting to visit in the future. The work involved discussions with numerous stakeholders including descendants, city, local, state and federal agencies each of whom was entirely satisfied that the relocation was completed in a manner honoring the deceased, in accordance with descendant's wishes and to the complete satisfaction of all governing agencies.

PNL has also managed several key consultants and contractors during the RI/FS, RD/RA and NRDA work, including: URS - RI/FS, Entrix - NRDA, ENTACT - RD/RA contractor, with GeoSyntec, ARCADIS and ERM were involved in other roles. PNL also coordinated with the Public Relations firm during the cemetery relocation to protect the group's interests, and has supported EPA in public meetings.