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ROCK SANDWICHES IN CUT<br />
SLOPE ROADS<br />
ROCK SANDWICHES CAN BE USED IN<br />
ALMOST ANY CUT BUT ARE MOST<br />
EFFECTIVE IN CUTS BELOW THE<br />
SEASONAL GROUNDWATER TABLE<br />
MOST EFFECTIVE IN SOILS THAT HAVE<br />
HIGH PERMEABILITY AND A<br />
SHALLOW RESTRICTIVE LAYER OR<br />
ARE SHALLOW TO BEDROCK
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