Laserfiche WebLink
VA, <br /> i <br /> w <br /> Once the well is purged and indicator <br /> casing volume. <br /> parameters have stabilized, a sample will be collected after <br /> the water level approaches 80 percent of its initial <br /> elevation. Where water level recovery is slow, the sample <br /> will bcollected <br /> after <br /> stabilization <br /> achieved and enough <br /> waterispresenttofillsamplecontainers. <br /> Cross contamination from transferring pumps (or bailers) <br /> from well to well will be avoided by utilizing dedicated <br /> equipment. Where this is not feasible, thorough cleaning of <br /> equipment will be performed between sampling rounds. <br /> Sampling will proceed from the least contaminated to the <br /> most contaminated well, if information available before <br /> is <br /> sample collection, or off it is analysis indicated <br /> bebyencor ea <br /> Where several types <br /> given well, individual samples will be collected in the <br /> following order: <br /> 1. volatile organics <br /> 2. Purgeable organic carbon <br /> 3. Purgeable organic halogens <br /> 4. Total organic carbon <br /> 5. 'Total organic halogens <br /> b. Extractable organics <br /> 7. Total metals <br /> 8. Dissolved metals <br /> g. Phenols <br /> 10. Cyanide <br /> The specific <br /> semivolat le to analysesbe utilized for the common <br /> are shown on Table 2 <br /> volatile/ <br /> Groundwater samples will be collected with a teflon bailer <br /> with bottom emptying device. Duplicate samples will be <br /> transferred to vials or containers <br /> aterthat <br /> fmeet <br /> ttseRegional <br /> baileBoard <br /> specifications (Table 1). the fluid <br /> be transferred to th(aloe wil <br /> sample <br /> mthe csidesnpaf ythelovesse1. All <br /> 1 to flow slowly g top openingto <br /> containers will be filled allovhe despace should be present <br /> form a positive meniscus. <br /> in the sample container once it is sealed. After the vial is <br /> capped it will be inverted to check for air bubbles. if <br /> bubbles are present the sample will be discarded and <br /> ble to collerc a sample without <br /> replaced. If it is not possi <br /> head space, the problem will be noted on the field <br /> technician's sampling log. <br /> Immediately following sample collection, samples will be <br /> labeled and stored in an ice chest Sample containinglabelsrozen will <br /> chemical ice sealed in plastic bags' ro ect ID, <br /> contain the following information: date, time, p <br /> sample ID, name of sampler and type <br /> of analysis. All <br /> samples will be transported under chain-of-custody protocol <br /> ory within 24 hours. A <br /> mple <br /> to a state <br /> filledcertified <br /> borat <br /> laboratory with organs frees nater <br /> container <br />