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Water Quality Monitoring Report <br /> Forward Landfill <br /> m��� separate cover. On behalf of Forward Inc., GLA performed an assessment of the source <br /> �w� and potential impacts of low-level VOCs in groundwater adjacent to the Forward <br /> Landfill. |twas concluded that the sporadic detection oflow-level VOCs ingroundwater <br /> (and |ysinneter samples) at the Forward Unit are most likely due to landfill gas from <br /> unlined unit VVMU-B. Forward has continued to minimize gas related impacts to <br /> groundwater by preventing ponding of water through regular site maintenance. <br /> Furthermore, in accordance with CCR Title 27, Section 20837, Forward continues to <br /> install additional landfill gas extraction wells, a3needed. <br /> Concentration Limit Thresholds <br /> In accordance with RVVQCB Order No. 115-2014-0006, the routine inorganic monitoring <br /> data obtained from the Forward Unit during the second quarter 20l5monitoring period <br /> were compared to intnaxve|| concentration limits (CLs) established for each vve||. Details <br /> on the statistical analysis for the established [Ls are presented in Appendix G of the <br /> fourth quarter 2014 Water Quality Monitoring Report for the Forward Landfill (GLA, <br /> 2014). ASsummarized inTable 2-4, the following [L6were exceeded during the second <br /> quarter ZO15monitoring period. <br /> ^ <br /> MW'2A—pH (field) <br /> ° MVV-3—barium <br /> = K8VV-14—pH (field) <br /> ��- ° MVV-l8—bicarbonate <br /> ° MVV- 23R—pH (field) <br /> In B letter dated July 16, 3015, the RVVCCB was notified of these CL euceeclances and <br /> retesting is scheduled for July 2015. The results of the verification sampling will be <br /> reported under separate cover. <br /> 2.1.5 Vaclose Zone Monitoring <br /> The current vaclose-zone monitoring network at the Forward Unit consists of 10 <br /> |ysirne1ers (seven suction |ysirneters and three pan |ysirneters)' These |ysirneter <br /> locations are shown on Figure 2-1. As shown on Table 2-5A, samples were collected <br /> from LY-8G-1 and pan lysinoeterVVK4U D'OlN, all other |ysirneterswere reported dry' As <br /> summarized on Table 2-58, 11 VOCs were detected (six above 3 PQL\ in the soil-pore <br /> liquid sample collected from pan |ysirnet8ru VVK8U D-01N during the monitoring period. <br /> For pan |ysirneterVV&4U-DO1N, approximately 1670 gallons of liquid were pumped from <br /> the pan and discharged tosurface impoundment VVK4UF /North\. <br /> Leachate sumps and surface impoundments are inspected weekly byForward Landfill <br /> personnel. If leachate is detected in a sump, it is pumped into the surface <br /> Kx:\ZO1S.UU14\FA2Q15.dncx 7 <br /> 7/91/201S' Rev.O <br />