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2.3 Additional Parameters <br />Additional parameters analyzed include bicarbonate, calcium, carbonate, magnesium, sodium, total suspended solids (TSS), <br />and turbidity. These parameters are not subject to State drinking water or groundwater standards. The laboratory results are <br />included in the Appendices. <br />2.4 Chlorinated Herbicides/Total Extractable Hvdrocarbons/Aromatic Volatile Oraanics/Oroanochlorine <br />Compounds <br />. There were no reportable detections of total extractable hydrocarbons, chlorinated herbicides, aromatic volatile organics, or <br />organochlorine compounds detected in CRMW 01, CRMW 04, CRMW 06, or CRMW 41. Additional parameter test results <br />and the summary of all laboratory analysis results are contained in the attached tables. <br />Figure 5 shows the location of the monitoring wells and the groundwater elevations measured during the October sampling <br />event. The gradient is northwest toward the South Platte River. The results of this sampling event are consistent with <br />anticipated results when the GWSAP was developed. Further sampling will be completed quarterly in 2009 consistent with the <br />• approved GWSAP modified as proposed herein. <br />3.0 ANNUAL GROUNDWATER MONITORING RESULTS <br />The groundwater quality monitoring results were tabulated and evaluated based on the Primary and Secondary Drinking <br />Water Standards and additional parameters. These standards are intended as general guidelines for this monitoring activity. <br />The results were compared to current standards and baseline levels along with spatial and temporal trends. A complete listing <br />of test results is included in Appendix A. <br />The background levels for the parameters listed below were primarily established in October 2007 based on site wide <br />averages and standard deviations. Individual wells are considered when the baseline/background level of the parameter for <br />the specific well if it has a higher concentration level than the site wide background level. <br />3.1 Primary Drinkina Water Standards <br />Primary drinking water parameters tested for include (arsenic, fecal Coliform, fluoride, mercury, and nitrate). Out of these five <br />parameters, fecal Coliform, and nitrate exceeded Colorado's Primary Drinking Water Standards (PDWS) at least one time <br />during the October 2005 to October 2008 sampling events. The following tables and descriptions address the individual <br />PDWS analytes and laboratory results since monitoring began in year 2005. <br />Annual 2008 Sampling Report - Lupton Lakes -2- December 2008