Laserfiche WebLink
Metadata
Document management portal powered by Laserfiche WebLink 9 © 1998-2015 Laserfiche. All rights reserved.
09 May 2003 <br /> • AGE-NC Project No 99-0559 <br /> IPage 2 of 7 <br />' • CPT-7 was advanced to 145 feet bsg on the western edge of Sutro Avenue, approximately <br /> 100 feet north of Waterloo Road, and <br /> I • CPT-8 was advanced to 168 feet bsg on the western edge of Golden Gate Avenue, at <br /> Waterloo Road <br /> IAt each boring location,the soil parameters of cone penetrometer tip resistance, sleeve friction and <br /> pore water pressure were continuously measured as the cone penetrometer was advanced to depth <br /> Utilizing the soil parameters, the Hogentogler Co computer program interpreted general lithology <br />' types based on the CPT Soil Behavior Classification System (Robertson, P K , Campanella, R G, <br /> Gillespie, D, and Greig, J , 1986) and displayed the interpreted hthologies on a continuous CPT <br /> Iboring log The CPT interpretive logs are presented in Appendix A <br /> Rinseate generated during drilling activities was containerized in properly labeled Department of <br /> Transportation (DOT)-approved 55-gallon drums and was stored on-site in an area lacking public <br /> access The CPT soil bonngs were backfilled over their entire depth range with a bentonite/portland <br /> cement grout mix <br /> 2 2 GROUND WATER SAMPLE COLLECTION <br /> IFollowing advancement of the initial boring to collect lithologic data, a HydroPunch ground water <br /> sampling tool was attached to the hollow-stem rod assembly and utilized to collect grab ground <br />' water samples at specified depths from an immediately adjacent,twin soil boring The ground water <br /> samples were collected at selected depths based on the previously acquired CPT lithologic log <br /> indicating favorable conditions for sampling groundwater The HydroPunch sample tool was pushed <br />' into the specific depth interval, then withdrawn approximately five feet to expose an inlet screen <br /> The interior of the sampling tool filled with water and a 1-inch outer diameter(O D ) stainless steel <br /> bailer was lowered and utilized to extract a ground water sample <br /> Ground water sample was collected from the CPT borings at the following intervals <br /> p g g <br />' • CPT-4 was sampled at 70 feet, 90 feet,125 feet and 130 feet bsg, <br /> • CPT-5 was sampled at 70 feet, 100 feet and 150 feet bsg, <br />' • CPT-6 was sampled at 70 feet, 100 feet, 125 feet and 150 feet bsg, <br /> • CPT-7 was sampled at 70 feet, 100 feet and 130 feet bsg, and <br />' CPT-8 was sampled at 70 feet, 100 feet, 125 feet and 165 feet bsg <br /> • <br /> I <br /> Advanced GeoEnvironmenta3,Inc <br /> I <br />