Lecture 2: EIS legislation/regulation, legal/political/implementation aspects of EIAs, cumulative impacts, case study Flashcards
Define scoping
using stakeholder input, identify the range of known or potential nontrivial env impacts or alternatives
What are the reasons that you would need to do an EIA? 5 major, 3 minor, 1 stupid.
What is the overall reason you do EIS? (2)
Major: Human health risk assessment / management, ecological risk assessment, life cycle analysis, risk reduction research / policy strategy, hazard assessment
minor: planning and engineering, prognostic molding, to make good decisions,
stupid: when required by law (NEPA, CAA, SARA)
you do an EIS to see what the cumulative adverse environmental effects are. provides a framework for decision makers if something goes wrong
Define Human health risk assessment / management
RA: determining the short and long term adverse consequences to individuals or groups from the use of a certain technology.
RM: administrative political and economic actions taken to determine the level and cost of reduction of a risk
describe the steps in a human health risk assessment / management
1) hazard assessment (is it toxic)
2) dose response (how toxic)
3) exposure assessment (who, where, when, how often/long, how much)
4) risk characterization (so what)
5) risk management steps (what to do about it)
Describe an ecological risk assessment
estimate of severity and extent of ecological effects associated with exposure to an anthropogenic pollutant. food webs
Describe a life-cycle analysis in the NEPA context, describe the steps (3)
quantify all env impacts of a product through its life, cradle-to-grave. includes raw materials, energy, water use/.
inventory analysis, impact analysis, improvement analysis
Describe the current risk reduction research / policy strategy in the US
shift from end-of-pipe controls to pollution prevention
Define hazard assessment, define the steps (7)
minimize consequences of substances causing acute health effects
compile data, develop scenarios, determine concs and duration, determine P(exposure), compile toxicity, review effects of control and prevention, perform sensitivity analysis
How does NEPA classify environmental impacts? (8)
primary, secondary, magnitude, duration, timing and season, irreversible and irretrievable commitment of resources / reversible impacts (half life)/ mitigated impacts (i.e., recovery time), scale (boundary), significance
Describe some secondary environmental impacts (5)
economic modifications, erosion leading to water contamination and fish kills, traffic which leads to air pollution, non point pollution, social changes
its important to look at the boundaries of your project
What does irreversible and irretrievable commitment of resources mean?
resources that have been permanently altered and cannot be restored (a habitat, endangered species), can also be cultural
How do we determine impacts of future projects? what parameters should be considered to make these decisions?
comparable actions at similar sites, and predictive models (either empirical (correlations) or physical (simulations))
to determine what outcomes should be studied, develop criteria (i want to protect this habitat), select indicators for each criteria (i’ll measure habitat by bird pop), examine trends
Define environmental indicator What determines a good environmental indicator?(3) What are the 5 major types of env indicators? What are the types of environmental criteria?
measures selected for the purpose of tracking env trends. selected based on relevance and practicality
scientifically justified, reflect system attributes, measurable
types: chem exposure makers, emissions, stressors (stream flows), impacts/injury, perception/public response
water quality, air quality, noise, human health, ecology
How can you compare env indicators (3)
compare in time, spatially and locally (upstream vs downsteam), spatially and cross-sectionally (affected area vs comparable area)
What are the 5 key issues that arise when you consider evaluating environmental impacts?
- participants
- establishment of baseline
- formulation of alternatives
- predict impacts of alternatives
- compare impacts to baseline, determine significance
- determine criteria for selection
There are many EIS checklists for various types of projects