ARCHIVED REPORTS_1995 - Laserfiche WebLink

Home Browse Search

• Well SB-1 is added to the program and monitored for the parameters listed in the WDR plus VOCs. by EPA 601. After implementing an EMP, a water quality monitoring plan must be prepared that demonstrates the effectiveness of the proposed corrective action (CCR, Title 23, Section 2550.10 [d]). The corrective action monitoring plan described below has been designed to meet this objective and to determine compliance with the WQPS proposed in Section 7.0. 6.1 Corrective Action Monitoring Plan Groundwater from well MW-5 is impacted by leachate emanating from the northeastern portion of the landfill as indicated by the detection of VOCs in the samples collected from the wells. VOCs are not naturally occurring, and their detection is an indication of landfill impact. Consistent with the EMP, wells MW-5 and SB-1 are currently sampled on a quarterly basis to evaluate changes in water quality. However, instead of using EPA Method 601 to analysis for VOCs, EPA Method 8260 will be used as required by WDR Order No. 94-259. To demonstrate the effectiveness of the proposed corrective action, these two wells will continue to be sampled on a quarterly basis. In addition to monitoring the groundwater from the shallow perched water-bearing zone, the surface water sampling required in the WDR Order No. 94-259 will be required for the corrective action monitoring program. 6.2 Analytical Parameters and Frequency Groundwater samples will be collected consistent with the sampling and analysis procedures presented in Appendix D. Wells MW-4, MW-5, and SB-1 will be sampled quarterly for the field and monitoring parameters listed on Table 1 (except MW-4 will only be analyzed for VOCs annually). Surface water will be sampled after the first storm of the rainy season which produces significant flows and quarterly thereafter when water is present. The COCs for both ground and surface water will be monitored once every five years except for the constituents in which concentration limits yet need to be established which will be monitored quarterly. SACW.\PJGM39M390031.9BG-94\edg:l Rev.0,4/20/95 0939-003.19 6-2