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Site Inspection UFP-QAPP Addendum <br />Stockton AASF, Stockton, California <br />etc.) or air knifing methods. All field work will be coordinated with the ARNG Environmental <br />Manager and/or his/her designee. <br />Health and Safety Requirements <br />Health and safety requirements for SI field activities are provided in the APP. Field personnel will <br />wear PFAS-free Level D personal protective equipment (PPE). Detailed Activity Hazard Analyses <br />identifying the physical, chemical, and biological hazards that may be encountered at the site and <br />the associated mitigation methods are presented in the SSHP. <br />All onsite personnel who may be exposed to hazardous conditions will be required to meet training <br />requirements identified in Federal Regulation 29 CFR 1910.120 (HAZWOPER). At least two <br />personnel trained in first aid and cardiopulmonary resuscitation (CPR) will be onsite during field <br />activities. Training certificates for personnel (HAZWOPER 40 -hour training; current HAZWOPER <br />8 -hour refresher training; and first aid/CPR) will be maintained onsite by the Site Supervisor. <br />Personnel and visitors who enter the site will be required to review the APP and SSHP and sign <br />the acknowledgement form. Site workers will be required to sign the daily tailgate safety meeting <br />form and fill out daily Activity Hazard Analysis forms. Safety issues that arise during <br />implementation of field activities will be addressed during tailgate safety meetings held daily <br />before the workday and will be documented in the daily tailgate safety meeting form. <br />QAPP Worksheet #17b <br />Sampling Design and Rationale <br />Direct -Push Boring Installation and Soil Sampling <br />Soil samples will be collected via hand auger and DPT (SOP 3-17). Hand augers will be used at <br />locations designated for collection of surface soil samples (0 to 2 feet bgs) only. Borings will be <br />advanced using DPT at locations designated for subsurface soil sample collection; however, hand <br />augers will be used to clear the top 5 feet of the boring in accordance with AECOM utility clearance <br />protocols. A GeoProbe® DT45 or DT60 dual -tube sampling system (or equivalent) will be used to <br />collect continuous soil cores to the target depth. DPT will be used to collect three soil samples <br />per boring (except for site -wide boring locations), if possible: one surface soil sample (0 to 2 feet <br />bgs), one subsurface soil sample approximately 2 feet above the groundwater table, and one <br />subsurface soil sample at the mid -point between the surface and the groundwater table, if the <br />depth to water is up to 30 feet bgs or shallower, or from 13 to 15 feet bgs if the depth to water is <br />greater than 30 feet deep. If refusal is encountered before the desired depth of sample location, <br />one additional attempt will be made adjacent to the original location (within 10 feet of the original <br />boring) to collect a soil sample at the desired depth. If refusal is encountered at 6 feet bgs or <br />shallower, only two samples will be collected per boring: one surface soil sample (0 to 2 feet bgs) <br />and one sample approximately 1 foot above refusal. All drilling materials will be PFAS-free. <br />The proposed sample locations are shown on Figure 17-1 and described in Worksheet #18. The <br />soil sample rationale and target depths for the borings are provided in Table 17-2 below. <br />AECOM QAPP Worksheet #17 <br />Page 4 of 10 <br />