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A IT x 1T rg h IT x 1TA IT requ1remenL I NA <br /> not in RWD # more info cmnts waived (Class <br /> RWD sufficient needed attcht di III only) , <br /> ' 1 <br /> l.a. Background water quality for an indicator parameter or waste <br /> constitueot in GW: <br /> i. Based on quarterly sampling of wells upgradientt frow the <br /> WMU for one year i <br /> ii. Analysis shall account for measurement errors in saa,pling <br /> and analysis <br /> iii. Analysis shall account for seasonal fluctuations in <br /> background water quality (if expected to affect <br /> concentration of hazardous constituent) <br /> b. If verification monitoring is in effect la can be waived and <br /> instead use appropriate water quality data <br /> peon-upgradient wells may be used if: <br /> 1. hydrogeologic conditions do not allow upgradient <br /> sampling <br /> OR <br /> 2. sampling at other wells will provide a <br /> representative indication of background water quality <br /> c. When determining a background value for eachindicator• <br /> parameter or waste •constituent: <br /> is use a minimum of 1 sample from each background well <br /> H. Use a ainimum of 4 samples <br /> iii. If only 1 background well, 4 samples shall be obtained <br /> by splitting the sample into 4 aliquots and conducting <br /> a separate analysis for each aliquot <br /> LAND AND WATER USE <br /> 1. Map showing locations of all water wells, oil wells, and <br /> geothermal wells in the WMU or within 1 mile of its peiiweter <br /> i <br /> r <br />