2018-02-20_PERMIT FILE - M2017036

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5.0 GROUND WATER SAMPLE COLLECTION Ground water samples will be collected from the existing monitoring well locations identified on Figure 1 and listed in Table 1. Well completion logs for each monitoring well are included in Appendix B. All ground water sampling equipment which will contact the ground water sample will either be decontaminated following the procedures specified in SOP #1 or be new and certified clean by the manufacturer. Prior to sample collection, sampler will collect a water well level measurement per the procedures outlined in SOP #2. Depending on the monitoring well characteristics, a minimum of three casing volumes will be purged from each well. Field water quality parameters will be measured during purging, and purging will continue until the parameters have stabilized. In instances where it may not be practical to purge three casing volumes, field water quality parameters will be monitored for stability before the three casing volumes are purged. In general, the monitoring wells listed in Table 1 are expected to yield sufficient water to allow for three casing volumes before sampling. Once field parameters have stabilized and or three well volumes have been removed, groundwater samples will be collected. Well purging, monitoring of field parameters and sample collection will be performed in accordance with the SOPs listed above. Field analytical parameters (which include pH, specific conductivity, temperature) and groundwater quality parameters to be analyzed are listed in Table 2. Appendix C provides the sampling analysis, method, containers, preservation and holding times for each parameter. 6.0 WATER MANAGEMENT POND SAMPLING The proposed Water Management Pond (WMP) is an unlined pond and is expected to directly recharge groundwater in the vicinity. Water samples will be collected quarterly from the WMP located in the NE corner of the proposed Site. Figure 1 shows the proposed location of the WMP. The standard operating procedures for sample collection are outline in SOP# 6. Loveland Ready-Mix Concrete,Inc. 3 Telesto Solutions,Inc. 20180227_1m_lapork_g,_sap reN I do February 2018-REV!