WORK PLANS - Laserfiche WebLink

Home Browse Search

CA ARNG Field Quality Assurance Project Plan 9.0 FIELD SAMPLING ACTIVITIES Prior to the commencement of all field work, the applicable Shop Chiefs will be notified. All coordination of subcontracts and access to the facilities will be coordinated between the CA ARNG, Radian, and the applicable Shop Chiefs. 9.1 Sample Collection and Handling 9.1.1 Surface Water/Sediment Sample Collection Procedures Surface Water Sampling 9.1.1.1 Surface water will be collected in pre -cleaned sample containers. Surface water samples will be collected by holdink the sample container at the desired depth within the water column in areas where water has ponded. If necessary, a Van Dorn® water sampler, or equivalent device, may be used to collect water from the water/sediment interface in the stormwater lagoons. The Van Dorn® sampler allows collection of the surface water from discrete depth. 9.1.1.2 The water collected using the Van Dorn® sampler will be transferred to pre -cleaned and pre - preserved (if applicable) containers. Following collection, the surface water samples will be labeled, wrapped in bubble pack, and placed in a chilled cooler containing ice for transport to the laboratory. The samples will be handled and shipped as described in the QAPP. Sediment Sampling 9.1.1:3 A sampling device will be -pushed into the substrate in drainage areas where the flow rate of the surface water is low, and where sediment has collected. 9.1.1.4 If necessary, an Ekman® dredge, or equivalent device may be used to collect sediment samples from stormwater lagoons, where the depth of standing water precludes the use of a drive tube. The material collected from the sediments at the bottom of the stormwater lagoon will be removed from the Ekman® dredge, mixed in a stainless steel mixing bowl with a stainless steel spoon and placed into pre - cleaned sample containers. Following collection, the sediment samples will be labeled, sealed in resealable plastic bags, and placed in a chilled cooler containing ice for transport to the laboratory. The samples will be stored and shipped as described in the QAPP. 9.1.2 Surface and Near Surface Soil Sample Collection Procedures Surface Scraping 9.1.2.1 Surface scraping may be used to collect soil samples from the ground surface, sidewalls and bottom of trenches or excavations, and scale or sediment from tanks, ponds, impoundments, or streams. Scrape a thin layer of soil directly into the sample container using a stainless steel trowel or spoon. Hand Augering 9.1.2.2 Surface and near surface soil can be collected using a hand auger. Hand augering may be used to collect soil samples from depths up to 10 feet bgs. This method is not appropriate for collecting samples for volatile parameter analysis because undisturbed samples are not obtained, and volatile compounds field QAPP.DOC 9-1 May 2000