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1 <br /> 15 <br /> Nitrogen,Nitrate EPA Method 300 0 <br /> Nitrogen,Nitrite EPA Method 300 0 <br /> Total Dissolved Solids EPA Method 160 1 <br /> ' Sulfate EPA Method 3000 <br /> Total Sulfide EPA Method 376 2 <br /> ' Total Organic Carbon EPA Method 415 1 <br /> Dissolved Organic Carbon EPA Method 415 1M <br /> 4.4UALI <br /> Q TY ASSURANCE/QUALITY CONTROL <br /> One duplicate water sample (DUP-1) of NPI-60 (at a depth of 60 ft bgs) was <br /> ' collected Also, two equipment blank water samples, identified as EBI-50 and EB2-90, from <br /> depths of 50 and 90 ft bgs, respectively, were collected QA/QC samples were submitted to a <br /> 1 fixed-site laboratory for analysts Equipment blanks were collected by pouring distilled water <br /> into the Snmulprob6m Water Canister following decontamination, prior to collecting a sample <br /> at the depth indicated, and then pouring the water into clean, glass jars provided by the on-site <br /> mobile laboratory <br /> 4.5 WELL DEVELOPMENT <br /> 1 <br /> Groundwater monitoring well NP-1 was developed in phases Specific parameters <br /> ' (ply conductivity, temperature and turbidity) were monitored during well development The <br /> first phase, completed on January 11, 1999, consisted of bailing with a 5/8-inch diameter by 3- <br /> 4 ' foot long stainless steel bailer until an obvious reduction in the turbidity of the well was <br /> I <br /> ' observed The second phase was performed on February 1, 1999 by Gettler-Ryan and <br /> consisted of pumping the well using a peristaltic pump Well development was deemed <br /> ' sufficient when the parameters pK temperature and conductivity stabilized within 10 percent <br /> of the previous reading for three consecutive measurements and clear water was being <br /> ' produced All measurements were recorded on well development logs which are located in <br /> Appendix C <br />