Contamination

This book provides a detailed exploration of groundwater contamination. It covers the theory behind groundwater pollution, discussing sources, types and the mechanisms of their transport. It provides methodologies for sampling, analyzing, and monitoring groundwater quality. It then describes mathematical and computer models used to simulate groundwater flow and pollutant transport. The book offers practical rules,

Natural source zone depletion (NSZD) can be a sustainable risk-management strategy for petroleum hydrocarbon light non-aqueous phase liquids (LNAPLs) impacting the subsurface. NSZD refers to the combination of naturally occurring processes – biodegradation, vaporisation, volatilisation and dissolution – that act to reduce LNAPL mass, saturation and mobility in the subsurface. Recent advances in NSZD are

Monitored natural attenuation (MNA) can be a sustainable risk management strategy for a wide range of groundwater contaminants, where environmental data are collected and assessed that demonstrate natural attenuation will protect receptors from pollution or harm. Natural attenuation refers to the combination of physical, chemical and biological processes that act, without human intervention, to reduce

A major concern at all hazardous waste disposal sites—whether abandoned, active, or planned—is the potential pollution of the underlying groundwater system. The vadose (unsaturated) zone comprises the ground layer beneath the topsoil and overlies the water table; in this zone, either water in pore spaces coexists with air or geological matter is unsaturated. Current federal

Arsenic Pollution summarizes research on the distribution and causes of arsenic pollution, its impact on health and agriculture, and solutions by way of water supply, treatment, and water resource management.

This is Part Two of a two-volume set that provides information for groundwater managers to gain an understanding of aquitards. The book set provides technical guidance for evaluating aquitard integrity and predicting chemical and microbial transport to underlying aquifers. Aquifers and aquitards make up groundwater flow systems, with aquitards having much lower permeability than aquifers.

This is Part One of a two-volume set that provides information for groundwater managers to gain an understanding of aquitards. The book set provides technical guidance for evaluating aquitard integrity and predicting chemical and microbial transport to underlying aquifers. Aquifers and aquitards make up groundwater flow systems, with aquitards having much lower permeability than aquifers.

This report summarizes research completed from May 2001 to November 2004 to evaluate processes controlling the natural attenuation (NA) of petroleum hydrocarbons and methyl tertiary butyl ether (MTBE) in the Upper Chalk aquifer at the site of an unleaded fuel spill in St Albans, southeast England. The unsaturated zone and saturated zone of the aquifer

This document provides guidance on assessing the risks to groundwater and surface water from petroleum hydrocarbon compounds. It complements the Environment Agency’s guidance given in the Remedial Targets Methodology (Environment Agency, 2006a and 2006b) and should be read alongside that report and Groundwater Protection: Principles and Practice (GP3, Environment Agency, 2013). The objective of this guidance is to establish

This illustrated handbook presents best-practice guidance for the assessment and remediation of light non-aqueous phase liquids (LNAPLs) in the subsurface. LNAPLs notably include fuels and oils, for example petrol (gasoline), diesel and heating oils, and are amongst the most commonly encountered organic contaminants in the subsurface environment due to their ubiquitous use, accidental release and,