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R&B Trucking <br /> Addendum#2 <br /> Page: 2 <br /> Each monitoring well will be developed before a water sample is collected. This will be <br /> accomplished by pumping until clear ground water is obtained and then removing an additional <br /> 5 well volumes. One well volume is equivalent to the water contained in the well casing plus <br /> that contained in the pore spaces of the filter pack. The filter pack is assumed to have 25% <br /> porosity. The extracted ground water will be stored in 55-gallon drums until it is determined if <br /> the water is contaminated. Contaminated water will be treated at a later date. <br /> Before a water sample is collected from the well, 5 well volumes will be removed. A travel <br /> blank will be provided by the laboratory and blanks will be collected before sampling to insure <br /> bailer or pump cleanliness. Water samples will be collected by using either a polyethylene <br /> disposable bailer or a ground water pump(bladder pump). <br /> It is proposed that this work be performed as quickly as possible. In the event you have any <br /> questions, please give me a call. <br /> Sincerely, <br /> Raynold I. Kablanow II, Ph.D. <br /> Geologist/Geochemist <br /> RIK:sm <br /> Enclosure <br />