WORK PLANS - Laserfiche WebLink

Home Browse Search

i PMuu When rings are converted into upgradient monitoring wells outside of the contaminant plume, soil samples will be collected for lithologic logging and field screening only, unless otherwise specified by project requirements. Prior to drilling the boring GHD will obtain all required permits. A Site-Specific Safety Plan detailing site hazards, site safety, and control will be prepared prior to any field work. At least 48 hours prior to drilling Underground Services Alert(USA)will be notified of the planned work. • Soil samples will be collected in one of two ways, depending on the constituents to be laboratory analyzed for. 1. For laboratory analysis of non Volatile Organic Compounds (VOCs), soil samples will be collected with a split spoon sampler sleeves or direct-push sample barrel lined With clean brass or stainless steel sleeve. A six-inch interval of the sample will be capped Teflon sheeting and plastic end caps, labeled, wrapped in a plastic storage bag and stored in a cooler, on ice. Sample numbers and depths will be noted on the boring logs. Each sample will then be placed in an ice chest(chilled to 4°C) until delivered to a State- certified laboratory under strict chain-of-custody documentation. 2. For laboratory analysis of VOCs, soil samples will be collected with a split spoon sampler or direct-push sample barrel that is not lined with any sleeves. Soil will be scraped away using a clean trowel or other device to get to the interior of the sample. As per EPA Method 5035, a new disposable En Core®Sampler will be in the En Core® handle. Three clean En Core®sanle tubes will be driven into the soil 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 strict chain-of-custody documentation, where they will weigh and preserve each sample within 48-hours of collection. A fourth Sample will be collected for laboratory screening, by driving a pre-cleaned container, such as a glass jar or a brass tube into the soil, capping it with Teflon or aluminum sheeting, and tight-fitting plastic caps. • The remaining sample will be used for color and soil type classification using the Unified Soil Classification System and Munsell color charts. A portion of each sample will be field- screened with a photo-ionization detector (PID). Results of classification and field screening will be recorded on the boring logs. • Sample equipment will be decontaminated by steam cleaning, or with Alconox soap and tap water between sampling intervals. • Augers or push casing will be steam cleaned between each boring. • If a hydropunch sampler is to be used to collect water samples, borings will terminate at the groundwater surface. A hydropunch-type groundwater-sampling device will be lowered into the hollow stem augers or the drive casing, and driven three to four feet into the aquifer. Groundwater will be allowed to flow into the hydropunch. GHD SOP Soil 8 Water Sampling Boring w VOCs 2 of 3 Rev 2/14