ARCHIVED REPORTS XR0007793 - Laserfiche WebLink

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3.0 JOB HAZARD ANALYSIS The tasks associated with the contamination assessment are summarized below A complete description is given in the Site Assessment Workplan for this project • Drill Soil Borings One soil borings will be drilled to 60 feet below grade A 2-inch diameter groundwater monitoring well will be installed in each boring ' Soil samples will be collected at 5 foot intervals, or at significant changes in lithology, beginning from 2 feet below ground surface, with one sample collected immediately above uppermost groundwater Soil samples will not be ' collected below groundwater • Soil Sample Collection Soil samples will be obtained with a split-spoon sampler lined with clean stainless steel sampling tubes ' Monitoring Well Installation One groundwater monitoring well will be installed During well borehole drilling, soil samples will be collected as described above The installed well will be developed and survey controlled Groundwater elevation measurements will be collected on a monthly basis over one annual period from the installed wells ' Groundwater Sample Collection On a quarterly basis over one annual period, each well will be sampled Prior to sample collection, each well will be purged using a stainless steel submersible pump Samples will be collected using a clean, unused, disposable polyethylene bailer The collected sample will be transferred from the bailer to appropriate sample containers using a bottom emptying device The work activities outlined above present potential physical and chemical hazards to the ' workers involved In all instances, precautionary measures will be implemented to minimize these risks It is not expected that any workers will be adversely affected by the work Strict environmental monitoring will be conducted at and around each work station Adherence of ' this SSP will minimize the risk to persons conducting the work, and also to those not associated with the field work This assessment will be revised periodically during the assessment as more detailed information becomes available In order to control exposures at the Site, work practices and the use of personal protective equipment/procedures will be required as outlined in Section 5 of this plan 3.1 CHEMICAL HAZARD ' The chemicals for which the investigation is being conducted are diesel fuel product and gasoline fuel product(TPHg and BTEX) ' The compounds of concern may occur in toxic concentrations in the samples collected Based on previous analyses of soil and groundwater samples collected during removal of tanks and the initial contamination , the overall health risk is believed to be low to moderate There are four routes of exposure or pathways by which toxic chemicals can enter the body skin punctures, ingestion, eye and skin absorption and inhalation ' 366-002 -3-