Laserfiche WebLink
Appendix A <br /> Groundwater Sampling Procedures And Logs <br /> • <br /> 1 A.I WATER LEVEL MEASURENIENT <br /> The depth to water will be measured using a solinet (or equivalent) «ater leNel meter to the <br /> nearest 0 01 foot The depth to the static water level will be measured by lowering the probe into <br /> the well and obtaining two successive readings that agree to within 0 01 feet Measurements will <br /> 1 be referenced to a mark at the top of the well casing <br /> A.2 GROUNDWATER SAMPLING <br /> Routine groundwater sampling has been conducted using conventional procedures and <br /> equipment, described below by Professional Services Industries (PSI) under contract to Caltrans <br /> The conventional procedures consist of purging the well and collecting samples with bailers after <br /> ample recovery In addition, selected were sampled in April 1999 using a KabisT" II Sampler for <br /> 4-inch wells (the KabisTI1 I sampler is for 2-inch wells) The KabtsTh1 II Sampler is designed to <br /> collect groundwater samples in triplicate at discrete depths When analyzed, the samples may <br /> provide a vertical profile of the water chemistry within the well <br /> A 2 1 Sample Collection using the KabisT`I II Sampler (Vertical Groundwater Sampling) <br /> Discrete, vertical groundwater samples were collected at up to three depths «ithin selected wells <br /> using the Kabisr'' Il Sampler The KabisT`I II Sampler is designed to collect three 40-milliliter <br /> vials of groundwater at discrete depths The KabisT`I II Sampler is described in more detail in <br /> Appendix B <br /> A.2? Decontamination Procedures <br /> Groundwater samples will be collected using a decontaminated KabisT`I <br /> P Sampler to avoid cross- <br /> contamination between wells Reusable Bound«ater sampling equipment «ill be decontaminated <br /> bet«een each sampling inters al using the follo«in4 procedures <br /> o Nash with Liquinor and brush, to rernw,e contaminants <br /> Q Second v.ash vv ith Liquinox and bnish <br /> o Rinse «ith detonized «ater <br /> 0 Second rinse %\ith detonized \%ater <br /> o Dry x\ith paper towels or drip dr-y <br /> a 2 3 QuahtN assurance Samples <br /> Field blank and duplicate samples «ere collected in appropriate sample bottles dunng sampling <br /> acts,ities Samples collected using the KabisT`1 I1 Sampler v,ill be in triplicate The laboraton for <br /> duplicate anal\sis retained the second and third 40-milliliter Mals «here necessary One rinsate <br /> sample per da% \%ill be collectcd follov'im: u'.'111[.lil7t[latI��tl of the KabisT`1 sampler Laboraton <br /> .lual1t\ ,ssurancc Lluaht,, contiol (Q-\. QC) rietliods atc lncurpolated ill the sample anal"sis <br /> prot'ratzl r� <br /> ,SBAi SHARED P40J 41040100041SYYARDMANTYAROSA 0CC �-1 uRS gre,ner Ylaodviard Clyde <br />