Laserfiche WebLink
KI.EINF1_LDER <br /> 4. GEOLOGY AND HYDROGEOLOGY <br /> 4.1 UNSATURATED ZONE <br /> The unsaturated (vadose) zone ranges in thickness from 45 feet thick near MW-1 to 51 feet <br /> thick:near MW-2. The surface of the unsaturated zone is an approximately 2 feet thick <br /> dark brown topsoil of clayey sand. Beneath this topsoil is a thick sequence of sands and <br /> gravels interbedded with clayey silts, sandy silts, and silty sands. Detailed lithologic <br /> descriptions are contained on the boring logs contained in Appendix B. <br /> 4.2 FIRST WATER BEARING ZONE <br /> First ground water was encountered at approximately 43 feet in MW- 48 feet in MW-2, <br /> and 46 feet in,MW-3. Sediments are primarily composed of sands and gravels. All three <br /> monitoring wells were completed with screened sections in sands and gravels (see Boring <br /> Logs,iAppendix B). <br /> 156-88-2362 7 <br />