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Attachment B <br /> Drilling and Sampling Procedures <br /> The procedures that were used for drilling the bonngs and collecting soil samples are presented <br /> below <br /> • General safety procedures were reviewed with the field investigation staff and <br /> subcontractors prior to commencement of field activities <br /> • Monitoring well installation permits were obtained from SJCEHD <br /> Drilling Procedures <br /> • Four CPT borings were advanced to a depth of up to 90 feet BGS Bonngs were <br /> advanced using direct push equipment <br /> i • All drilling equipment were washed prior to drilling each boring <br /> • Soil descriptions, sample type and depth, and related drilling information were <br /> recorded on a boring log under the supervision of a State-registered geologist <br /> Groundwater Sampling Procedures <br /> • Field activities and equipment utilization were recorded on field report forms <br /> The depths at which the groundwater samples were collected was based on the CPT <br /> boring logs <br />' • A hydropunch was used to collect discreet groundwater samples at depths with low <br /> pore pressure <br />' • A reusable stainless steel bailer was used for collection of each groundwater <br /> sample The bailer was rinsed between samples <br /> • New nylon rope was used to lower the bailers into the wells The nylon rope was <br /> discarded after each well <br /> • Groundwater samples were placed into laboratory-supplied containers containing <br />' preservatives <br /> • Groundwater was discharged from the bailer via a bottom-emptying device <br />' Discharge to the containers was conducted in a manner to minimize bubbling and <br /> agitation of the liquid The containers were filled to the top forming a meniscus to <br /> minimize the headspace <br /> NteacDPk2OO Pd188880840 IA Sae doc <br /> 1012803 <br />