Lorentz Barrel & Drum

San jose, california
Project Overview

The Lorentz Barrel and Drum CERCLA Site (LBD Site), located in San Jose, California, is a former drum recycling facility that accepted over two million drums from 1947 until 1987, when the facility was closed.  Drums arrived containing a variety of aqueous wastes, including solvents, acids, oxidizers, and oil; were cleaned using heat, caustics, acids, steam, and/or mechanical methods; and then were repainted, resealed, and shipped off-site.  Liquid waste and cleaning water were discharged to on-site sumps and basins; some of the material subsequently drained into site soils or into the storm sewer – contaminating soil and groundwater. 

A groundwater pump and treat (P&T) system is the major component of the groundwater remedy at the Site. The groundwater P&T system consists of  groundwater extraction wells and a granular activated carbon treatment system. 

Our role

PIONEER is responsible for the operations and maintenance of the groundwater P&T system.   In addition to the groundwater P&T system operations and maintenance responsibilities, PIONEER is accountable for NPDES compliance and reporting, groundwater monitoring, report writing, and regulatory negotiation. 

The United States Environmental Protection Agency, Lorentz Shallow Groundwater Task Force, and PIONEER are jointly conducting a focused feasibility study (FFS) and identifying data gaps to develop cleanup alternatives and achieve cleanup goals for the site.


The purpose of the FFS is to perform a holistic evaluation of the performance of remedial actions that have been implemented at the Site and to develop and evaluate alternatives that can more efficiently and effectively achieve all cleanup goals within a reasonable restoration time frame.  A number of technologies are being considered and will be thoroughly evaluated in the FFS in order to identify the remedial alternative that will be used to address constituents of concern (COCs) in (1) source-area soil and groundwater, and (2) down gradient groundwater.

A number of possible modifications to the existing groundwater P&T system are being evaluated in the FFS.  Other remedial alternatives that might remediate VOCs in groundwater more efficiently than the existing P&T system (e.g., source-area treatment with enhanced in-situ bioremediation, institutional controls, and groundwater monitoring for down gradient groundwater impacts), and would not require extraction of impacted groundwater, treatment of extracted groundwater, or discharge of treated effluent are also being evaluated.


Other Projects

PIONEER has managed numerous environmental projects throughout the United States and abroad.  We have conducted investigations at large, complex sites as well as small, simple sites.  Our project managers provide the same high level of customer service and attention to detail regardless of the size of the project.  The projects highlighted on our website are generally representative of our work.  For additional project examples, please contact us.

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