ARCHIVED REPORTS XR0001086 - Laserfiche WebLink

Home Browse Search

' Site Background Information Vanco Truck & Auto Plaza ' Page 4 of 6 on CPT soil behavior types (SBTs),range between 1 x 10-6 and I X10 8 centimeters per second(cm/s) ' for silty to clayey type soils This interval is characterized by generally moderate pore pressures Hydrogeologic Unit 2 (HU2) - At the top of the current saturated zone, HU2 extends from 30 feet ' to approximately 38 feet bsg and is composed of silty sand to sand type soils Hydraulic conductivities for HU2 typically vary between 1 x 10 Z and 1 x 10 5 cm/s HU2 is characterized by ' generally lower pore pressures and is classified as a flow unit Hydrogeologic Unit 3 (HU3) - HU3 extends from 38 feet to approximately 45 feet bsg and is ' composed primarily of stiff, fine-grained soils, clayey silts, silts, and silty clays Hydraulic conductivities for these soil types generally range between i x 10' and 1 x 1 V cm/s for clays, silts, and stiff, fine-grained soils HU3 is characterized by varying pore pressures ranging between ' moderate and high and is identified as a confining layer Hydrogeologic Unit 4 (HU4) - HU4 extends from 45 feet bsg to approximately 50 feet bsg and is composed of silty sand to sand type soils Hydraulic conductivities for HU4 generally range between 1 x 10 Z and 1 x 10` cm/s HU4 is characterized by generally lower pore pressures and is classified as a flow unit 'ib Hydrogeologic Unit 5 (HU5) - Extending from 50 feet to approximately 70 feet bsg, HU5 is composed predominantly of stiff,fine-grained clayey silts, silty clays, and clay A thin silty sand to ' sand type soil is encountered at approximately 58 to 62 feet bsg and has characteristically low hydraulic conductivity Hydraulic conductivity generally ranges between 1 x 10'and 1 X 1015 cm/s for clays,silts,and stiff,fine-grained soils HU5 is characterized by varying pore pressures varying from ' moderate to very high, and is identified as a confining layer Hydrogeologic Unit 6(HU6)-HU6 extends from 70 feet to 82 feet bsg and Is composed of silty sand ' to sand type soils Hydraulic conductivities for HU6 generally range between 1 x 10.2 and 5 0 cm/s HU6 is characterized by very low pore pressures, and is classified as a flow unit ' Hydrogeologic Unit 7 (HU7) - Extending from 82 feet to total depth of the boring (100 feet bsg), HU7 is composed primarily of stiff, fine-grained clayey silts,silty clays,and clay A thin,cemented ' sand is encountered at approximately 94 feet to 95 feet bsg Hydraulic conductivity generally ranges between 1 x 10"5 and 1 x 1015 cm/s for clays, silts, and stiff, fine-grained soils HU7 is characterized by varying pore pressures ranging between moderate and very high and is identified as a confining ' layer ' SITE CONCEPTUAL MODEL �k Based on the data collected to date from soil boring installation and sampling, AGE has developed I Advanced GeoEnvironmental,Inc I