U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Recent Additions

NanoRem Project Bulletins

Posted: March 24, 2017

The Taking Nanotechnological Remediation Processes from Lab Scale to End User Applications for the Restoration of a Clean Environment (NanoRem) project focused on facilitating practical, safe, economic, and exploitable nanotechnology for in situ remediation from 2013-2017. This project was undertaken in parallel with developing a comprehensive understanding of the environmental risk-benefit, market demand, overall sustainability, and stakeholder perceptions of the use of nanoparticles (NPs). Twelve NanoRem Bulletins have been created to transfer the knowledge developed within NanoRem to end-users.

Geospatial Analysis for Optimization at Environmental Sites

Posted: March 22, 2017

Geospatial analysis supports optimization activities throughout all stages of an environmental investigation or cleanup by improving performance of characterization and remediation activities, increasing monitoring efficiency, and justifying decisions. This Interstate Technology & Regulatory Council (ITRC) guide illustrates the practical application of geospatial analyses to support optimization activities and help practitioners apply geospatial analyses to their projects. This information will help state regulators and other practitioners to understand, evaluate, and make informed decisions about geospatial analyses for optimizing activities during environmental investigation or remediation. The material presented provides not only highly technical detail but also introductory information for those who may not have expertise in this area.

Best Practices for Environmental Site Management: Recommended Contents of a Groundwater Monitoring Report

Posted: March 22, 2017

The purpose of this issue paper is to recommend information to include in groundwater monitoring reports that will lead to improved report consistency and a useful, readable format. Incorporation of the recommended information will standardize groundwater monitoring report deliverables, which may in turn inform site characterization strategies, analysis of remedial alternatives, monitoring network optimization, remedy performance evaluation, continual refinement of the conceptual site model (CSM), and technical evaluation of groundwater data in five-year reviews.

Launch Complex 39a, Swmu 008, Operations, Maintenance, and Monitoring Report, Kennedy Space Center, Florida

Posted: May 14, 2017

This report presents the findings, observations, and results from Year 1 operation of the air sparging groundwater interim measure (IM) for high-concentration and low-concentration plumes within the perimeter fence line at Launch Complex 39A (LC39A). The objective of the LC39A groundwater IM is to actively decrease concentrations of TCE, cDCE, and VC in groundwater within the pad perimeter fence line via to levels less than Florida Department of Environmental Protection Groundwater Cleanup Target Levels. O&M information from system startup in February 2015 through December 31, 2015, is provided, plus performance monitoring results for quarterly groundwater sampling events through January 2016. From startup through the January 2016 groundwater sampling event, the air sparging system has met the performance criteria, achieving an overall 77% mass reduction of chemicals of concern.

Orchard Supply Company Facility Groundwater Remediation, 1731 17th Street, Sacramento, Sacramento County

Posted: May 14, 2017

The in situ groundwater remediation project consisted of injecting a slurry solution of EHC into the source area shallow and deep groundwater to treat concentrations of 1,2-DCA, 1,2-DCP, and carbon tetrachloride. EHC is a mixture of controlled-release carbon, zero-valent iron, and nutrients for stimulating in situ chemical reduction of otherwise persistent chemicals in groundwater. A total volume of 24,525 gal of injection substrate containing 68,000 lb of EHC (30% EHC solids mixed with water) was injected using direct push tooling in the source area groundwater. The injections were completed between July 2015 and September 2015. No further injections are planned for the site. Additional groundwater monitoring is being conducted under a separate agreement. See more technical information in the site documents at

Toolkit for Identification and Quantification of Mercury Releases: Reference Report and Guideline for Inventory Level 2. Version 1.4

Posted: May 14, 2017

Chapter 5 of the Level 2 guide provides detailed descriptions of sources of mercury releases from industrial or other human activity.