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2. Rinse the turbidity probe with deionized water then place in the standard solution. ' <br /> 3. Adjust the meter for appropriate turbidity.scale then read the turbidity. <br /> 4. If required use the "calibrate" 4ustmeat on the meter to correct the instrument to read <br /> the cornet turbidity. <br /> Thecalibration' .process will be recorded on a turbidity c aMration log. A Sample Calibration <br /> Log,is located in Appendix C. Copies of calibration logs for each individual instrurnem are kept <br /> in a binder at the office. the togs are reviewed periodically top assess whether the instrument is <br /> ming-more difficult to calibrate and therefore needs adjustment by the manufacturer, or if <br /> new probes are requ red. <br /> .Equipment Decontamination <br /> To reduce the potential for introducing contaminants or-cross-contaminating Samples,sampling <br /> equipment that is used repeatedly at different wells Cm liac fitter, maters) will be washed in a <br /> #risodium•phosphate solution and triple rinsed with deioni and water prior to use.in each-wclL- <br /> The monitoring wells are equipped with dedicatc&sampling-systems-vfWch--wiU not-require � <br /> decontamination. Sterile factory sealed disposable bailers are used to collect the samples. Bailer <br /> cord is replaced between each well. <br /> Monitoring Order <br /> Groundwater monitoring will be conducted such that depth to water m eats and sampling <br /> is performed in the least contaminated wells first_(based on bistorical results). Measurement and <br /> =npling order will then move from lesser'. 'wells to the most impacted weH& This is <br /> done to reduce the potential that wells and samples ran be crass contadtinated. Groundwater - <br /> mor*oring order beg*=at 20 and then MW-12 rovhiclt are the&wkgrotmd wells,. The next <br /> welts, in order, to he sampled era -15, -10, -1 and 3.. These wells rarely contain <br /> evidence of chemical impacts. The last wells to be'sampled,listed in order,include •14,-13 <br /> and '•2. Proposed well 16 will be sampled in an appro order depending on - <br /> co are detected (if airy) in tac well upon the first ling. initially, -16 will be <br /> the lastwell sampled. <br /> 234939a9-FOlU3 tabu A4 tuts ta, <br />