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Provision No. 5 of Order No. 94-303 requires the City to implement a monitoring program to evaluate the effectiveness of the CAP in controlling the spread of the landfill pollutant plume. On April 12, 1995 PCE, TCE, Dichlorodifluoromethane, and 1, 1, Dichloroethane was detected in plume detection well, MW -13. MW -13 is located directly north of the landfill, about 1,500 feet from the landfill's northern boundary. MW -13 was retested on May 24, 1995. Retest results confirmed the presence of PCE and TCE. A "trace" of TCE was found in the MW -13 retest sample and 2.0 ug/1 of PCE was also detected. On July 11, 1995, new plume detection well MW -14 was sampled for the first time. MW -14 was sited northeast of the landfill, midway between MW -12 and MW -13. Its purpose is to detect movement of the landfill plume toward the State agricultural well down gradient from the landfill. Only a "trace" of acetone was detected in the MW -14 sample. Acetone is not a known constituent of the landfill plume. Third quarter sampling (July 11, 1996) of deep well MW -6 revealed the presence of traces of toluene and xylene. Also, traces of toluene and ethylbenezene were found in MW -12. Retesting of these wells on October 6, 1995 showed no VOCs. As of the end of 1995, the landfill plume appears to have affected MW -13. The City continues to closely monitor MW -12 and MW -14 for evidence of landfill impact. Provision No. 11(a) of Order No. 94-303 requires the City to submit a Preliminary Closure and Postclosure Maintenance Plan for the existing landfill by March 15, 1996. The City submitted this report on February 2, 1995. Provision No. 11(c) of Order No. 94-303 requires the City to submit an amended Report of Waste Discharge (ROWD) for the landfill expansion. The City submitted an amended ROWD on July 20, 1995. Regional Board staff certified the ROWD complete on February 1, 1996. With respect to Constituent Concentration Limits, provision No. 11(d) required submittal of concentration limits for the constituents listed in Monitoring and Reporting Program No. 94-303 by December 15, 1996. Concentration limits were recalculated in the fourth quarter of 1995. Revised concentration limits are contained in the report, "Statistical Evaluation of Groundwater Monitoring Data, Fourth Quarter 1995" (EMCON, 1/22/96). "I certify under penalty of law that I have personally examined and am familiar with the information submitted in this document and all attachments and that, based on my inquiry of those individuals immediately responsible for obtaining the information, I believe that the information is true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment."