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 A Simple Model for Predicting Nitrate Plumes
Kirk Heatwole and John McCray
Item Number: NRL2006AC-5
Shipping Weight: 0lbs. 0oz.
Price: $20.00
Today, one of the major issues faced by local regulators and county health officials is to determine the appropriate density for new residential developments that utilize OWS. Another issue is what the appropriate setbacks should be between OWS and drinking water wells or local water resources (i.e. streams, lakes, etc.) The US EPA (2002) notes that performance requirements need to be set for OWS based on mass removal or concentration of contaminants reaching a specified performance boundary. Few studies have been published that describe quantitative tools to predict the fate and transport of contaminants originating from OWS at the development scale.The model discussed in this paper may be suitable for local and county environmental health organizations to use for evaluating OWS groundwater impacts at a development scale. The Horizontal Plane Source (HPS) model is a transient, three-dimensional analytical model capable of simulating advective-dispersive transport in a homogeneous, isotropic aquifer with uniform horizontal flow. The model solution is based on a finite horizontal plane contaminant source zone. Unlike other modeling approaches, the HPS model provides a predictive tool that is appropriate at the scale of development and is not as complex or data intensive as modeling approaches that have previously been proposed.