WORK PLANS - Laserfiche WebLink

Home Browse Search

4. Procedure When soil is ready to be sampled, the field staff person shall perform the following activities, not necessarily in the order listed. Soil Sampling Activities If the excavation is less than 5 feet deep and the field staff person is comfortable with the site conditions,the excavation may be entered to obtain samples directly from the sidewalls/bottom. If the excavation is 5 feet or deeper, the field staff person will not enter the excavation without direction from a "competent person" and/or adequate shoring (pursuant with OSHA requirements). • Soil shall be obtained from the desired location by means of the excavation equipment at the site (backhoe/excavator bucket), drill rig or hand auger, and brought to the ground surface for access.Near the teeth of the backhoe bucket, or at the bottom of the sample liner, soil will be scraped away using a clean trowel or other clean device. A clean brass or stainless steel sleeve, glass jar or En Core®sampler will then be pushed directly into the uncovered soil until full, or a new plastic 10 ml syringe will have the bottom end removed, and the syringe will be inserted into the exposed soil until approximately five milliliters of soil is collected. • Soil samples will be collected in one of three ways, depending on the constituents the laboratory will be requested to analyze for. 1. For laboratory analysis of non Volatile Organic Compounds(VOCs), soil samples will be collected with laboratory supplied glass jars or clean brass or stainless steel sleeves. A six-inch filled sleeve of the sample will be capped with Teflon sheeting and plastic end caps, labeled, and sealed in a plastic storage bag. Glass jars are sealed with the supplied screw-lid after filling the jar. Sample numbers and sample time will be noted. Each sample will then be placed in an ice chest(chilled to 4°C)until delivered to a state-certified laboratory under chain-of-custody documentation. 2. For laboratory analysis of VOCs, soil samples will be collected using an En Core sampler. As per EPA Method 5035, a new disposable En Core Sampler will be placed in the En Core®handle. Three clean En Core® sample tubes will be driven into the soil adjacent to each other and filled completely to avoid air space. The En Core® sample tube will be retracted from the soil and capped with the locking cap, and inserted in the provided envelope. Each envelope will be labeled with the job number,the sample identification, date and time of collection,the sampler's name, and the analyses required. Each set of three En Core®samples will then be placed in an ice chest(chilled to 4°C) until delivered to a state- certified laboratory under chain-of-custody documentation, where they will weigh and preserve each sample within 48-hours of collection. A glass jar or sleeve will also be collected for laboratory screening or additional analyses, by capping a sample sleeve with Teflon sheeting, and tight-fitting plastic caps, or sealing the jar with the provided lid, and including it with the samples as described in Sections I and 3. SOP Soil Sampling for 5035 VOCs 2 Of 5 August 2011