The following pages describe how toxic vapors can enter your living space from the subsurface
The following pages describe various methods to prevent toxic vapors entering your living space from the subsurface
The following pages describe basic groundwater flow
The following pages describe basic contaminant transport by groundwater
The following page describes how products like gasoline sink below water when it normally floats
The following page illustrates the importance that contaminated soils are often composed of three different populations
The following page illustrates the mechanism for chemicals as a separate phase to directly, not dissolved in water, contaminate soils
The following page illustrates the mechanism for chemicals, dissolved in water, to contaminate soils
The following page provides definitions of terms used on this website
Post or Answer a Question
This page is an in depth overview describing the objectives of this website
It is probably best to first explore the other links; however, the Table of Contents page is a must see: many more pages are available than the few hyperlinks displayed in this column
This page provides some useful links to interesting sites on the web
earthdr@earthdrx.org

earthDr!

"the environmental ombudsman"

Environmental Justice for All

earthDRx.org - prescriptions (Rx) for
a cleaner environment

Recovery Well Too Far Upgradient

Unfortunately many recovery wells have been located in similar fashion to that depicted in this figure. This figure depicts a recovery well located so far upgradient of the home that it may take years to influence clean ground water to flow
beneath your house. The plume may be split into two portions within a few months. However, the upgradient extent of the plumelet is located too far upgradient of the home that it may take years for this clean ground water, originating from beyond the sidegradient extent of the plume and at depth below the plume, to flow into the Interfluxus Zone (Interfluxus Zone is the zone between the mother plume and the plumelet, while the Mother Plume is the plume contiguous to the Source Discharge Zone) where it can then flush the plumelet beyond the home. On an earlier page (use the back button on your browser to return to this page or click on Table of Contents to relocate yourself) the stagnation point is depicted close to the upgradient side of the home. The stagnation point should be located sufficiently close, but upgradient of the house so that the clean ground water from just outside the sidegradient extent of the plume and at depth below the plume, is induced to flow the shortest distance to the upgradient side of the house through those soils contaminated by dissolved product. Once the soils on the upgradient side, and just under the house are flushed of their contaminant load, the clean ground water from just beyond the sidegradient extent of the plume and at depth below the plume, can now flush the contaminant load in those more distant, downgradient soils as depicted on the earlier page.


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VAPORS OFF GASSING FROM SEEPS OF CONTAMINATED GROUNDWATER

PRODUCT SEEPAGE CAUSING VAPORS IN YOUR HOME

TREATISE - REMEDIATION OF VAPORS RESULTING FROM PRODUCT SEEPS

VAPORS OFF GASSING FROM SEEPS OF CONTAMINATED GROUNDWATER

TREATISE - REMEDIATION OF VAPORS RESULTING FROM VENTING OF THE SOIL ATMOSPHERE CONTAINING A VAPOR CLOUD
     
   
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