1. Monitoring Well Sampling

2. SAP (Sampling Analysis Plan) SAP (Sampling Analysis Plan) Frequency Frequency Purging Purging Pumps and Bailers Pumps and Bailers Bottles and Materials Bottles and Materials

3. SAP Sampling Analysis Plan Written statement of sampling objectives Written statement of sampling objectives Provides a schedule Provides a schedule Procedures Procedures Written documentation for outside evaluation Written documentation for outside evaluation Vehicle provisions Vehicle provisions

4. Conducting a Sampling Event

5. Sample Point Inspection Prior to sampling, inspect the well Prior to sampling, inspect the well Identifying markers Identifying markers Is surface sealed Is surface sealed Check for weathering of outer surface Check for weathering of outer surface

6. Headspace Screening Headspace Screening Record ambient or background readings Record ambient or background readings Water Level Measurement Water Level Measurement According to Sampling Analysis Plan According to Sampling Analysis Plan Well Purging and Field Parameter Measurement Well Purging and Field Parameter Measurement Select purging device based on possible material/sample interactions Select purging device based on possible material/sample interactions Corrosion of steel parts Corrosion of steel parts Low pH, high O 2 content, high CO 2, high TDS, high iron bacteria… Low pH, high O 2 content, high CO 2, high TDS, high iron bacteria… Degradation of plastic materials Degradation of plastic materials High concentrations of chlorinated solvents High concentrations of chlorinated solvents Adsorption and later desorption of metals or organic compounds from solid surfaces Adsorption and later desorption of metals or organic compounds from solid surfaces Leaching from plastic materials Leaching from plastic materials Pumps vs. bailers Pumps vs. bailers Low flow vs. high flow return rates Low flow vs. high flow return rates Dedicated vs. portable purging/sampling equipment Dedicated vs. portable purging/sampling equipment If multiple samples are necessary, dedicated equipment will ease the decontamination process If multiple samples are necessary, dedicated equipment will ease the decontamination process Cost of purchase and operation Cost of purchase and operation Calibrate the equipment Calibrate the equipment Organize all supplies Organize all supplies Gloves, sample containers, preservatives, filters, labels, field notebook, etc. Gloves, sample containers, preservatives, filters, labels, field notebook, etc.

7. Sample Collection Procedures Order of container filling Order of container filling

8. Sample Collection Protocols Sample Collection Protocols Sample should never come in contact with anything but the interior of the sample container (cannot touch the mouth of the container) Sample should never come in contact with anything but the interior of the sample container (cannot touch the mouth of the container) Caps kept on container until the moment the container is to be filled Caps kept on container until the moment the container is to be filled As little atmospheric influence a possible, little contact with ambient air As little atmospheric influence a possible, little contact with ambient air For VOCs, no headspace, need a positive miniscus For VOCs, no headspace, need a positive miniscus Collection field QC Samples Collection field QC Samples Trip blanks, temperature blanks, field blanks, equipment blanks, blind duplicate blanks, field spiked blanks, field split blanks Trip blanks, temperature blanks, field blanks, equipment blanks, blind duplicate blanks, field spiked blanks, field split blanks

9. Pretreatment Procedures Pretreatment Procedures Filtration Filtration

10. Preserving Preserving Physical Physical Appropriate container Appropriate container Adequate packing Adequate packing Adequate temperature Adequate temperature

11. Chemical ChemicalPreservatives

12. Cleaning the equipment Cleaning the equipment Water-level gauges, probes, flow-thru cells, pump and tubing Water-level gauges, probes, flow-thru cells, pump and tubing Delivery to lab Delivery to lab

13. Well Deserved Beverage!! Well Deserved Beverage!!