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Total maximum daily loads, TMDLs, are the tool used by environmental regulators to address nonpoint source pollution under the Clean Water Act. The CWA’s policies and goals are that, “It is the national policy that programs for the control of nonpoint sources of pollution be developed and implemented in an expeditious manner so as to enable the goals of this Act to be met through the control of both point and nonpoint sources of pollution.
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Everyone recognizes that environmental data have spatial attributes. We are all familiar with GIS-produced maps showing where data were collected in relation to each other and to other variables. However, maps do not provide a critical requirement to objectively make operational decisions, justify environmental policies and regulations, or help finders of fact in litigation reach sound decisions. What maps lack is the quantitative description of patterns and relationships that reflect underlying environmental processes.
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Standards for Non-Potable Water Quality
Categories: Estimated reading time: 2 minutes
Chemical standards are appropriate for human drinking water sources, but generally not for non-potable waters supporting fish and wildlife. This is because water chemistry is highly variable, measurements are isolated in time and space, and point measures are difficult to interpret as suitable for fish and wildlife. Biological-based standards of water quality are more appropriate because the presence of aquatic organisms reflect water quality integrated over time and space. Biological water quality measures have been of interest to environmental scientists and regulators for about 40 years. -
Staying ahead of climate change
Categories: Estimated reading time: 2 minutes
Understanding that complying with all your environmental permit conditions shows regulators that you comply with environmental statutes does not protect you from challenges and litigation is a necessary foundation for sustaining your operations. Permit compliance conditions are minimal and do not reflect the effects of the changing climate on your operations and the environments in which it set. This blog post addresses storm water discharge; NEPA, ESA, TSCA and others have the same needs but a broader scope. -
Storing environmental data
Categories: Environmental chemistry data are expensive to obtain and valuable and need proper care in storage so they retain their value and return your investment in them. Expenses start with permit application preparation and baseline collections and continue through monitoring programs, analyses, and reporting. Download the PDF. -
Storing Expensive and Valuable Environmental Chemistry Data
Categories: Estimated reading time: 3 minutes
Environmental chemistry data are expensive to obtain and valuable and need proper care in storage so they retain their value and return your investment in them. Expenses start with permit application preparation and baseline collections and continue through monitoring programs, analyses, and reporting. The proper storage of environmental data is in an appropriately designed database, but many organizations use spreadsheets instead because they are readily available and easy for individuals to learn and use. -
The Fate of Biological Data: Too Little Information
Categories: Estimated reading time: 3 minutes
It is widely accepted that raw data need to be converted to information (commonly by statistical analyses) and the results interpreted to form knowledge before informed decisions can be made. With biological data this process is not followed as frequently as it should. Modern spatial analyses and statistical models can provide valuable and useful information that is otherwise lost. Biological data are counts, presence/absence, proportions, and frequencies. They are not continuous variables with a true zero so the familiar parametric statistics cannot be used. -
Operational and regulatory decisions depend on insights and knowledge gained from analyses of data collected in compliance with water quality permit conditions. These data need to be set in their spatial and temporal contexts and associated with aquatic biota, beneficial uses of the waters after leaving the project boundaries, and the geomorphic settings through which they flow. This report on the relationships of total dissolved solids (TDS) with selected minerals from a sample of streams on both sides of the Independence Mountains is the first aspect to be analyzed and reported.
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Total Dissolved Solids in Streams
Categories: Estimated reading time: 2 minutes
Operational and regulatory decisions depend on insights and knowledge gained from analyses of data collected in compliance with water quality permit conditions. These data need to be set in their spatial and temporal contexts and associated with aquatic biota, beneficial uses of the waters after leaving the project boundaries, and the geomorphic settings through which they flow. A white paper on the relationships of total dissolved solids (TDS) with selected minerals from a sample of streams on both sides of the Independence Mountains in northern Elko County, Nevada, is analyzed and interpreted for use by operators and regulators. -
Every project in the mining and energy industries exists only as long as it has valid environmental permits. No project can begin, operate, expand, close, be reclaimed, or be decommissioned without required environmental permits. This makes environmental data—correctly analyzed, interpreted, and clearly communicated—as important as commodity prices or energy demand data to regulators, senior corporate executives, bankers, and equity investors. This is particularly true when commodity prices are in a trough and energy prices are in flux.