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eme <br /> Continental Materials Corporation <br /> Transit Mix Concrete Co. <br /> 440 S. LaSalle St. Suite 3100 <br /> Chicago IL 60605 <br /> regarding weather a full geotechnical investigation was needed given the short <br /> remaining life of the exiting wash fines pond and the amount of fill to be placed on the <br /> southwest embankment, TMCC chose to go with your option A, "Install of the requested <br /> piezometer and if it can be shown the piezometric surface would not contribute to a <br /> potential failure, no geotechnical analysis would be required, or. <br /> The piezometer hole was drilled on the outside edge of the road running on top of the <br /> southwest embankment before the 3H:1V slope starts and runs downward toward <br /> Bradley Road. The hole was drilled to a depth of 36 feet, with ground water being <br /> encountered at 35.6 feet. The hole was placed in fill to a depth of 20 feet, where original <br /> ground surface was encountered. A drill log was completed by Vine Laboratories and is <br /> included as Appendix A of this response letter. Picture 4 through 6, show the location of <br /> the piezometer hole location and completed capped well. <br /> - - ' <br /> Picture 4: Drill rig on location of piezometer, southwest embankment of existing wash <br /> fines pond. <br />