Laserfiche WebLink
r <br /> r <br /> • <br /> rThe top 6 feet of the five borings located along the sidewalk of West Grantline Road (TR-17 <br /> through TR-21) were hand augered due to the potential for encountering buried fiber optic <br /> utilities The borings were grouted upon completion using a neat cement grout Mr Harlen <br /> ' Knoll of the SJCEHD granted permission to grout the boreholes The soil cuttings generated <br /> during the drilling activities were placed in 55-gallon drums The drums were labeled and were <br /> ' appropriately disposed by the owner on the 28 October 2003 <br /> 4 2 1 Soil Sampling <br /> Soil samples were collected using a direct push continuous core sampler A total of 20 soil <br /> ' samples were collected and analyzed fifteen shallow soil samples between 3 5 and 6 feet bgs <br /> and two deeper soil samples at 10 feet bgs were collected within the 541 Site boundaries Three <br /> ' additional deep soil samples were collected offsite in borings TR-17, TR-18, and TR-24 between <br /> 7 5 to 10 feet bgs The purpose of the deeper samples was to collect data comparable with <br /> previous investigations <br /> ' The purpose of collecting the onsite shallow soil samples was to assess whether an unknown <br /> surface source of contamination may have been present A limited soil sampling interval was <br /> Iavailable onsite due to the thickness of fill and underlying shallow groundwater The shallow <br /> soil samples were collected below the fill material and above the contaminated groundwater <br /> However, within the northern undeveloped portion of the property, some of the shallow soil <br /> samples were taken within the groundwater capillary fringe(moist zone) and may contain <br /> ' contaminants from the groundwater <br /> Samples were screened for volatile organic compounds (VOCs)using either direct observation <br /> (i e , smell, color) and/or a calibrated photoionization detector(PID) The borings were logged <br /> ' in general accordance with the USCS Soil Classification System Classification of the soil, PID <br /> readings, and visual observations are presented in the Soil Boring Logs in Appendix B <br /> 1 <br /> 1 <br /> Field Investigation Report 9 S December 2003 <br /> ' TREADWELL&ROLLO,INC <br />