Summary of the Triad approach
ABS: The Triad approach represents an evolution and progression of technical thinking about contaminated sites. Triad serves as a platform to integrate the experiences, lessons learned, and advances in science and technical tools and know-how gained over the past 25+ years of hazardous site investigation, cleanup, and reuse. The Purpose of the Triad Approach Experienced … Continue reading
Steam Enhanced Extraction (SEE) for DNAPL Source Removal: Confidential Client, Danville, PA
Abs: The Danville facility was originally constructed in the 1880’s to manufacture rolled steel and steel
parts. A total of 26 on-site tanks and pits were reportedly used for storage of raw materials and
wastes, including gasoline, Varsol®, kerosene, fuel oil, cutting oil, hydraulic oil and waste oil.
Numerous remediation activities have been completed on the site since … Continue reading
Combining Two Thermal Technologies at the Groveland Wells Superfund Site
Abs: In 1979, Volatile Organic Compound (VOC) contamination was detected at concentrations above
drinking water standards in two municipal water supply wells in Groveland, MA. The wells were shut down. The main source of the contamination was identified as the former Valley Manufacturing Products Company, which began manufacturing various metal parts in 1963. At the time, operators disposed of liquids through a leach field and it was later determined that a leaky underground storage tank containing TCE was also a source of groundwater contamination. Nearly 850 acres (344 hectacres) (including the former Valley Manufacturing Products Company property now known as the Groveland Wells Superfund Site) were added to the National Priorities List in 1982. Remedial actions at the Site included the installations and operation of a Soil Vapor Extraction (SVE) system in the source area between 1992 and 2002 and a groundwater extraction and treatment system, which has operated since 2000. Following a remedial investigation, it was determined that the SVE system was ineffective, thus ISTT was recommended… Continue reading
Klozur® CR Used to Remediate Benzene, Toluene, Ethylbenzene, Xylene and MTBE at active UST Site
Abs: The location of the site required site treatment at or near In-Stream Water Quality Standards (ISWQS). Klozur® CR was selected to treat the impacted groundwater in order to meet the stringent goals. Prior to injection, BTEX was detected in excess of 44,000 μg/L, with benzene detected as high as 3,280 μg… Continue reading
ISCO CASE STUDY: USE OF PEROXIDE ACTIVATED SODIUM PERSULFATE FOR TREATMENT OF BTEX AND MTBE, LAKE SHASTA, CA
ABS: Elevated levels of BTEX, MTBE, and TAME were present near the site. The ISCO treatment consisted of injections of Klozur® that were performed simultaneously into 12 injection wells. The chemical oxidation process can be described as a controlled, moderate-high temperature, and low-pressure application… Continue reading