borehole log Articles
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How to improve your environmental data confidence
When your environmental data is handled by multiple team members, labs, and stakeholders, it can be easy to feel unsure about your data quality. On top of that, there's the need to cross-check against regulatory requirements. Manually reviewing and editing your database takes time, leading to project delays and compromising your efficiency. To improve your environmental data confidence here's ...
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What is a bore log?
A bore log refers to a record detailing the in-situ conditions and aspects of geotechnical exploration activities such as drilling boreholes and mining. The log information needed to create a bore log is obtained through visual inspection of samples obtained from the geotechnical process. It is also obtained through geophysical measurements made along the borehole axis by using special logging ...
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High-Resolution Site Characterization with Multilevel Systems
Within the last few years, the U.S. EPA added a new focus area on high-resolution site characterization (HRSC) to their Contaminated Site Clean-Up Information (CLU-IN) website. The U.S. EPA’s definition of HRSC is: “High-resolution site characterization (HRSC) strategies and techniques use scale-appropriate measurement and sample density to define contaminant distributions, and the ...
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Chlorofluorocarbon (CFC) remediation case study 2002
Project Description The project site is located in Northern California and was leased and operated as a chemical storage and solvent recovery operation from late 1972 through April 1993. During an earlier period, the site may also have been used as a waste transfer station. Previous investigations indicate that soil and groundwater at the site, and groundwater down-gradient (westward) from the ...
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The Massachusetts Contingency Plan (MCP) Numerical Standards
The Massachusetts Contingency Plan (MCP) Numerical Standards is a set of standards that establishes liability for operators and owners of zones that are contaminated with hazardous material or oil. The MCP establishes programs under the mandates for risk assessment, required assessment, and remedy hazardous material and oil contamination. Therefore, the plan is fundamental to determining if ...
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What are Massachusetts MCP Standards?
Massachusetts Contingency Plan (310 CMR 40.00) standards were established to provide the procedures and requirements necessary to protect public health, safety, welfare and the environment. It controls or prevents activities that may lead to the release of hazardous materials into the environment. In case of the release of hazardous materials, the Massachusetts Department of Environmental ...
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NMR Logging Through Geoprobe Direct Push Tooling
Among the many advantages in our range of borehole tools is that we produce versions of the Javelin and Dart that can be deployed through direct push driven casings. Vista Clara systems are the world’s only NMR logging tools that can be deployed using Direct Push technology from industry leader, Geoprobe ...
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Alberta Tier 2 Soil and Groundwater Remediation Guidelines
The Alberta Tier 2 guidelines for soil and groundwater remediation are used when considering site-specific conditions implemented through modifying Tier 1 remediation guidelines. It is also applied to remove exposure pathways that do not apply to specific sites. Compared to Tier 2 remediation guidelines, a lot of information about a site is needed to implement Tier 2 guidelines. The required ...
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British Columbia Protocol 10 for Contaminated Sites
British Columbia Protocol 10 allows for developing water quality standards for cadmium and zinc and is applied in specific sites to protect freshwater aquatic life. The protocol provides a table containing precalculated and preapproved water quality standards for water hardness up to 500mg/L. The Canadian Council of Ministers of the Environment (CCME) provides cadmium and zinc standards, while ...
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NSW Excavated Natural Material standards and guidelines
NSW Excavated Natural Material standards and guidelines are passed by the Environmental Protection Authority (EPA), and it provides the requirements that should be observed by suppliers of excavated natural materials regarding uses such as application in earthworks or engineering fills. Under regulations, excavated natural material refers to naturally occurring soil and rocks excavated from the ...
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Chloroflourocarbon (CFC) remediation case study
Project Description The Site location was an industrial facility located in the greater South Los Angeles region that manufactured chemicals for local petrochemical and other industrial operations from 1919 through late 1990’s. Refrigerants were initially produced in 1964 including chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) such as trichlorofluoromethane (R-11), ...
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Regional Screening Levels EPA RSL 1.0 and EPA RSL 0.1
Regional Screening Levels (RSL) refers to risk-based concentrations developed by the United States Environmental Protection Agency using standardized equations which integrate exposure information assumptions with EPA’s toxicity data. RSLs aim to protect human health by assessing the risk the contaminants and other stressors pose on humans and ecological receptors. RSL tables are generic, ...
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Characterization, Remediation and Management in Kansas of Total Petroleum Hydrocarbons (TPH) and Light Non-Aqueous Phase Liquid (LNAPL)
The Kansas policy on TPH and LNAPL provide guidelines observed in implementing initiatives to address petroleum contaminated sites. Such initiatives include characterizing, remediating, and managing the release of petroleum into the environment. The policy was developed to be used in place of the Kansas Department of Health and Environment (KDHE) Bureau of Environmental Remediation (BER) Policy. ...
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Site Closure Strategies: Reducing Remediation Liabilities & Costs
Industrial companies face the daunting task of managing investigations and clean-ups at thousands of contaminated properties. In staying abreast of new technology and ever-evolving regulatory programs, companies must address many challenges involving regulations, technologies, and expenses. To successfully manage the costs and risks for each project, it is important to: 1) Focus on the ultimate ...
By AECOM
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Monitoring of Subsurface Contaminant Remediation at Moab UMTRA
The Moab Uranium Mill Tailings Remedial Action (UMTRA) site is a former uranium ore-processing facility managed by the U.S. Department of Energy (DOE) in collaboration with Lawrence Berkeley National Lab (LBNL). The highest remediation priority for the site is hauling and disposal of mill tailings. Additional efforts of the site are focused on remediation of a uranium plume on the edge of ...
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Federal Water Quality Maximum Contaminant Levels (MCLs)
Maximum Contaminant Levels (MCLs) represents the highest acceptable level of contaminants in drinking water. The unit used for MCLs is milligrams per litre (mg/L), which corresponds to parts per million (PPM). The Federal Water Quality Maximum Contaminant Levels (MCLs) are contained under the Safe Drinking Water Act (SDWA). MCLs are provided for a list of contaminants that include arsenic, ...
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British Columbia (BC) Hazardous Waste Regulations
The BC Hazardous Waste Regulations serves the purpose of protecting human health and the environment by ensuring that the waste is handled and disposed of per the guidelines stipulated under the Environmental Management Act (EMA). EMA forbids the release of hazardous waste in a manner that leads to pollution of the environment, unless for circumstances permitted under the act. BC Hazardous Waste ...
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British Columbia Approved Water Quality Guidelines: Aquatic Life, Wildlife and Agriculture
The British Columbia (BC) Water Quality Guidelines (WQG) was developed by the BC Ministry of Environment and Climate Change Strategy (ENV), and it provides the safe levels for substances to enforce protection of water used for drinking, agriculture, aquatic life, recreation and wildlife. The Environmental Management Act provides the basis for the formation and implementation of WQG through ...
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Risk-Based Environmental Standards for Kansas
The Risk-Based Standards for Kansas is a manual that details the processes of instating site-specific and chemical-specific clean-up goals for groundwater, soil and indoor air (Kansas Department of Health and Environment, 2010). The United States Environmental Protection Agency and other technical resources directives were used to determine the clean-up goals. An Environmental Workgroup ...
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Chemical Quality Assurance Reporting
A chemical quality assurance report refers to documentation that consist of planned and systematic actions focused on providing information about the accuracy, reliability, usability and comparability of analysis done on chemicals in a particular setting, for instance, those found in underground water in a site. It is generated based on the findings of research or analyses performed in an ...
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