Because you already installed monitoring wells, could you complete a years worth of water levels to show the regulators that groundwater does not come that close to the surface? This may be a fair trade off between the cost of a standard septic system and a mounded/pressure dose system.<br>...
Soil mottling is a blotchy discoloration of the vertical soil section, i.e. as would be seen with depth in a test pit. The discoloration is the reaction of soil components with changes in soil moisture. The most common of these is the oxidation of iron-rich soil causing a rust color.<br>
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Soil mottling (blotchy discloration in the vertical soil profile) is an indication of oxidation, usually attributed to contact with groundwater. With regards to septic systems, I am not sure whether your asking about mottling caused by changing groundwater elevation or by saturation of the soil...
Yes, ground penetrating radar (GPR) and resistivity can map permafrost, but so can other surface electromagnetic (EM) methods. GPR and surface EM are more rapid methods than surface resistivity, and thus, are usually less costly to implement. However, the key questions to answer before using...
