ARCHIVED REPORTS XR0003126 - Laserfiche WebLink

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THE REMEDIATION GROUP, inc C A sample drawn from plumbing on municipal or domestic wells must be taken at the access valve closest to the well and upstream of any water softening or chlorination input D The sample container and cap will be laboratory prepared containers The container will then be filled to overflowing (except when sampling for bacteriological analysts or when chemical preservatives have been added to the sample container) to avoid trapping air at the top of the container Splashing of the water in the sample container and exposure to the atmosphere will be minimized during sampling A container cap will be screwed on tightly immediately after filling the sample container Samples for volatile organics analysis (VOA) will be collected in duplicate in VOA bottles and checked to be sure no headspace is present in the sample container Sample preservation procedures are presented below in Section 2 5 E Where more than one well within a specific field or site is to be sampled, the sampling sequence will begin with the well having the least suspected contamination Successive samples will be obtained from wells of increasing suspected contamination If the relative degree of suspected contamination at each well cannot be reasonable assumed, sampling will proceed from the perimeter of the site towards the center of the site The sampling sequence will be arranged such that the wells are sampled in order of increasing proximity to the suspected source of contamination F A map will be used in the field to record sample locations A field log book or data sheets will be used to record the following information o sample number/name o date and time sampled o sample location (well number) o depth at which sample was taken o conditions of source (flowing, pumping, etc } o extraordinary circumstances (if any) o name of sampler o results of field measurements (temperature, pH, specific conductance) 2.2 Sample Filtration When the analysis of metals in the groundwater is required, field filtration of each sample will be performed, using a 0 45 micron filter and filter press, prior to transferring the sample to the sample container and preserving it with nitric acid Alternatively, the sample will be delivered to the laboratory, unpreserved, the same day as sampling, accompanied by a request for filtration and preservation 2.3 Sample Containers and Volumes The sample containers will be either glass or plastic and will be obtained from a state-certified hazardous waste laboratory or other approved source Separate containers will be required for specific groups of analytes in accordance with EPA methods (40 CFR Part 136) protocol gw 2 16 July 1994