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as part of the semi-annual sampling required for surface water. The lhird event, to be <br />completed in January, 1996, will include the full Appendix li list to fulfill the requirement that <br />once a year, a full Appendix Il scan should be completed. This task also includes the <br />collection of one equipment blank, one duplicate sample, and one trip blank for quality <br />assurance/quality control (QA/QC) purposes during each sampling event. One set of QA/QC <br />samples will be collected at each landfill during each sampling event. Cost for this task is <br />based on the standard laboratory tumaround time of three weeks. <br /> <br />Following is an outline of the proposed sampling schedule and the parameters to be analyzed <br />during each event: <br /> <br />Ist event - Sept/Oct, 1995, triggered Appendix 1I constituents <br /> bis (2-ethylhexyl) phthalate - Base Neutrals - EPA Method 8270 <br /> <br />2nd event - Oct/Nov, 1995, full Appendix I plus triggered Appendix Il <br /> Full Appendix I scan <br /> Base Neutrals - EPA Method 8270 for bis (2-ethylhexyl) phthalate <br /> Full Appendix I scan for 2 surface water samples <br /> <br />3rd event - Jan., 1996 <br /> Full Appendix Il constituent list. <br /> <br />TASK 2 - STATISTICAL ANALYSIS <br /> <br />When the results of all three sampling events are compiled, CDM will evaluate the results by <br />statistical analysis in accordance with the new roles: (1) comparison to N.C. Ground Water <br />Standards (15A NCAC 2L .0202); and, (2) statistical analysis. CDM will first examine the <br />results and fu'st determine which statistical test is the most appropriate from among the <br />approved methods in Rule .1632 (g) and (h). CDM will then peffonn the required statistical <br />calculations and include them in the report in Task 3. <br /> <br />TASK 3- LETTER REPORT <br /> <br />Once the analytical results are received, CDM will prepare a letter report for each site for <br />submittal to the SWS. The submittal will include the laboratory data, water level data, field <br />parameter measurements, groundwater flow direction and velocity, and a discussion on the <br />sampling activities. A summary table comparing the results with the North Carolina <br />Groundwater Standards will also be prepared. <br /> <br />The responsibility of OWNER as described in Section 2 of said Agreement are <br />amended and supplemented as follows: <br /> <br />· Review project deliverables in a timely manner. <br /> <br />n :~abarcus'~mend 11 .cab <br /> <br />Page 2 of 4 <br /> <br /> <br />