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ES-RR&IH-001 ® Stantec Soil Sampling SOP Page 5 of 11 Rev. 2 Jun 2016 • Camera and film or disks. • Blank soil borehole logs or a field-logging PDA. • Personal safety gear (hard hat, steel-toed boots, ear plugs, safety glasses, etc.). 8.0 METHODS 8.1 Hollow-Stem Auger/Direct Push Sampling Make sure that all equipment and meters have been calibrated to the equipment specifications and the results have been recorded in the field log. The top five (5) feet of the boreholes will be cleared via air knife, vacuum excavation, ground penetrating radar, hand auger, the probe or some combination of these methods. Shallow soil boreholes are typically drilled with hollow-stem augers or geoprobe and sampled at the intervals specified in the work plans. Sampling shall be done in advance of the lead auger to minimize cross-contamination. Samples for laboratory analysis shall be taken with a continuous soil sampler. Standard blow counts shall be recorded for driving the sampler 6 and 12 inches (ASTM Method D 1586-99) if sampler is hammer driven. Upon retrieval of the sample, the sample will placed on a clean surface (or lined with disposable aluminum foil or plastic sheeting) and will be screened with a PID for locating potential elevated PID readings. If applicable, a representative grab sample will be collected along with a headspace sample and placed into the appropriately labeled sample container. The sample containers shall be placed in self-sealing plastic or bubble bags in a cooler with ice or frozen ice packs for storage until they are delivered to the analytical laboratory. The following method is to be used for headspace screening: • The portion (for headspace screening) should be placed into an appropriately sized re-sealable Ziploc@or equivalent bag; • Seal and label the bag with the borehole identification and the depth of the sample; • Allow the bag to equilibrate for approximately ten (10) minutes; and • Insert the probe tip of the PID into the bag. Obtain a measurement using the PID. The remainder of the sample shall be logged in accordance with the USCS and recorded on the boring logs according to the following procedure: 1. As much information as possible is to be shown in the heading of each log. This includes, but is not limited to: - Project name and project identification number; - Identification of borehole; THIS INFORMATION FOR AUTHORIZED COMPANY USE ONLY STANTEC CONSULTING