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taken at each of the two surface water monitoring stations. Surface water monitoring is only required on a semi-annual basis. The samples will be submitted to a certified laboratory and analyzed for the Subtitle D, Appendix I constituents. There will be four sampling events; two in which surface water samples will be taken. The total number of samples collected during each of the two events when surface water samples are taken will be 14 for a total of 28 samples. When surface water samples are not required, the total number of samples per event will be 12 for a total of 24. The total number of samples collected over the four sampling events will be 52. The samples will be broken down as follows: · 9 · 2 · 3 monitoring wells surface water sampling locations (only 2 times) quality assurance/quality control (1 trip blank, 1 duplicate sample, and 1 equipment rinsate blank) as required by the NC Solid Waste Rules The regulations require that landfills collect a minimum of four independent samples for each monitor well during the first sampling event to establish background concentrations. At least one of these samples should be collected prior to October 9, 1994. The remaining three samples may be collected over the next six months but prior to April 9, 1995. Costs associated with this task include analytical costs based on the above referenced number of samples and on standard laboratory turnaround time. This task does not include collecting readings from the methane gas wells. It is assumed that the County will include the new gas wells in the current methane gas monitoring program. TASK 5 - STATISTICAL ANALYSIS OF GROUNDWATER MONITORING RESULTS When the four baseline sampling events have been completed, CDM will evaluate the results by two methods in accordance with the new rutes: (1) comparison to N.C. Ground Water Standards (15A NCAC 2L .0202); and, (2) statistical analysis. CDM will first examine the results and first determine which statistical test is the most appropriate from among the approved methods in Rule .1632 (g) and (h). CDM will then perform the required statistical calculations and include them in the report in Task 6. TASK 6 - WELL INSTALLATION AND SAMPLING/ANALYSIS REPORT When all of new monitoring wells have been installed and the first baseline ground and surface water sampling event completed, CDM will prepare and submit a report summarizing the following data prior to October 9, 1994: · monitoring well completion records and report of activities 4of7