WORK PLANS - Laserfiche WebLink

Home Browse Search

Additionally, a previously assumed destroyed well (MWR-13) was found and repaired. The letter report documenting the procedures employed to repair MWR-13, -15 and -20 are provided in Appendix B. The letter report documenting MWR-18's destruction is also provided in Appendix B. These four wells have not ' been included in the Discharger's past quarterly monitoring activities because of well design limitations (1 to 1.5-inch casing diameter) and unknown well construction (construction records have not been found). These wells shall therefore continue to be omitted from the monitoring network, and accordingly are not included in Table 1. ' Quarterly groundwater data is also collected by other entities from monitoring wells located in potential future land application and recycled water storage areas. These areas have not been authorized to receive recycled water, and these data shall be considered as part of future RWERs. Because no new land application areas are included as part of this Master Well Workplan, the identifying information and monitoring data from this second group of wells is not ' presented. For the same reason, no new monitoring well locations are proposed as part of this Master Well Workplan; supplemental monitoring well locations shall be proposed in future Groundwater Well Project Description Addendums submitted as part of proposed expansions or changes to the existing groundwater monitoring network. ' B. Drilling Details Supervision of Drilling and Well Installation ' Per San Joaquin County Well Standards, monitoring wells will be constructed by a C-57 licensed contractor under the direction of a California Registered Professional Engineer, California Professional Geologist, or a California Certified Engineering Geologist. Prior to construction, permits will be obtained from the San Joaquin County Environmental Health Department (SJCEHD) and Underground Services Alert will visibly mark all subsurface utilities, pipelines, tanks, septic systems or other structures. Inspections will be made as required by the County during all phases of construction and development. Well ' inspections shall be scheduled with the County and all sealing operations performed in the presence of a County inspector, unless directed otherwise by the County. ' Drilling Equipment and Techniques The well driller shall employ a hollow-stem auger to drill 10-inch diameter ' boreholes to a maximum depth of about 1 foot below the bottom of the designed well screen depth (total depth of about 24 feet below land surface). In some areas, groundwater may be first encountered at slightly greater depths and it may be appropriate to construct slightly deeper monitoring wells. For example, the typical Mossdale area well is about 21 feet deep, whereas monitoring wells - 5 - 1