Environmental Engineering Reference
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• Checking the proper function of the water quality measuring equipment; these
items should be new or properly decontaminated. Equipment may include: tem-
perature, pH, conductivity, dissolved oxygen, reduction-oxidation potential,
hydrogen sulfide, photoionization, explosivity, and lower explosive limit detec-
tion devices or meters.
• Ordering appropriate sample containers.
• Establishing appropriate protocol for sample labels.
• Making sure chain of custody and laboratory log-in sheets have been prepared in
advance to the extent possible.
• Ensuring the sampling preservation, transport, and packing materials are appro-
priate, including: coolers, ice, sample preservation chemicals, filters, and any spe-
cialized laboratory instructions.
Figure 4.25a and b show accessing a monitoring well and lowering a Teflon bailer into a
well. Figure 4.26 shows a water level indicator; it consists of a graduated tape measure
(a)
(b)
FIGURE 4.25
(a) Monitoring well cover; (b) Lowering a Teflon bailer down into a monitoring well. (Photos by Daniel T. Rogers.)
FIGURE 4.26
Water level indicator. (Photo by Daniel T. Rogers.)
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