USEPA Superfund Mega-Site
Capping Technical Oversight Contract
Under Department of Defense Contract W912WJ-20-P-0071, Lally Consulting LLC (Lally LLC) was tasked by USACE – New England District (USACE) and United States Environmental Protection Agency – Region 1 (USEPA) to conduct independent technical oversight on the installation of seven (7) subaqueous caps within the New Bedford Harbor Superfund Site. Further, Lally LLC developed the cap designs and precision cap placement approach to be implemented under prior contract W912WJ-18-C-0003.
This technical oversight contract involved monitoring RAC contractor capping quality and progress via progress survey data, video, EPS telemetry, and other data, participating in weekly capping conference calls and providing guidance on cap construction, design and repair elements. Lally LLC was also tasked by the USACE with making assessment of contractor acceptance area requests, which involved rapid data review, production of analysis graphics and cap thickness statistics, along with our recommendations to accept or improve the engineered caps.
Lally LLC identified and monitored construction concerns related to capping production and placement control over the duration of construction, and guided improvements when needed. The subaqueous caps were ultimately completed within schedule and budget.
How we Helped
Capping Technical Oversight Services performed by Lally LLC under this contract included;
- Prepare Accident Prevention Plan (APP)
- Equipment selection and optimization
- USACE / USEPA Construction Oversight Support
- Identify needs and make specific recommendations for performance improvements with respect to placement accuracy, production and quality control.
- Conduct frequent acceptance area data review requests on expedited basis produce data analysis graphics and cap thickness statistics for USACE as necessary along with recommendations for acceptance or repair.
- Prepare and provide cap design files to RAC Contractor for upload to the capping platform.
- Prepare and submit Weekly Cap Performance Memos to USACE / USEPA with QC analysis products and recommendations for multiple caps/layers under construction, and technical issues requiring detailed analysis.
- Develop multiple Quality Control (QC) tools, Mapping Products and Data Analytics.
- Participate in weekly capping conference calls. Report out on placement QC and production status and concerns. Provide guidance on technical matters and cap design conformance as required.
- Perform analysis of core results vs. survey to assess consolidation effects.
- Rapid response to USACE / RAC A/E Contractor requests for data review. Produce supplemental clarifying data and graphics for USACE as necessary.
- Engineering review of cap component geotechnical characteristics, slope stability, and cap thickness reduction proposals. Provide recommendations.
- Multiple site visits. Submit field memorandums to USACE / USEPA for improved capping performance.
- Monitor capping progress remotely via progress survey data, daily reports, EPS telemetry and real-time video.
- Project Administration.
Related Projects
Services Provided
Engineered Cap Design
Capping Placement Equipment and Methodology
Field Services
Construction Oversight
Location
Massachusetts, USA
Period
2019 – 2020
For its work under USACE Contract W912WJ-18-C-0003, Lally Consulting LLC was nominated by the NBHSS Project Leadership and selected by an awards panel of EPA representatives from across the Agency as the 2020 national recipient of the USEPA Administrator’s Award for Outstanding Accomplishments by a Small Business Contractor.