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DRAFT [TENTATIVE] WASTE DISCHARGE REQUIREMENTS ORDER R5-2023-00XX 88 <br />FORWARD, INC. <br />FORWARD LANDFILL <br />SAN JOAQUIN COUNTY <br />STANDARD PROVISIONS & REPORTING REQUIREMENTS <br />could preclude accurate determination of groundwater flow rate and <br />direction [40 C.F.R. § 258.53(d)]. <br />20.Monitoring wells, piezometers, and other measurement, sampling, and <br />analytical devices must be operated and maintained so that they perform <br />to design specifications throughout the life of the monitoring program [40 <br />C.F.R. § 258.51(c)(2)]. Monitoring devices that cannot be operated and <br />maintained to perform to design specifications shall be replaced after <br />review and approval of a report (i.e., work plan) for the proposed <br />replacement devices. <br />21.All borings are to be logged during drilling under the direct supervision of a <br />registered geologist or registered civil engineer with expertise in <br />stratigraphic well logging [Title 27, § 20415(e)(2)]. <br />22.Soils are to be described according to the Unified Soil Classification <br />System [Title 27, § 20415(e)(2)(A)]. Rock is to be described in a manner <br />appropriate for the purpose of the investigation [Title 27, <br />§ 20415(e)(2)(B)]. <br />23.The Discharger shall submit a work plan for review and approval at least <br />60 days prior to installation or abandonment of groundwater monitoring <br />wells. <br />24.The Discharger shall provide Central Valley Water Board staff a minimum <br />of one week notification prior to commencing any field activities related to <br />the installation or abandonment of monitoring devices. <br />25.The water quality protection standard shall consist of the constituents of <br />concern (COC), concentration limits, and the point of compliance. The <br />water quality protection standard shall apply during the active life of the <br />waste management unit, closure period, post-closure maintenance period, <br />and any compliance period under Title 27, section 20410 [Title 27, <br />§ 20390]. <br />26.The point of compliance at which the water quality protection standard <br />applies is a vertical surface located at the hydraulically downgradient limit <br />of the waste management unit that extends through the uppermost aquifer <br />underlying the unit [Title 27, § 20405]. <br />27.The compliance period is the minimum period of time during which the <br />Discharger shall conduct a water quality monitoring program and is the <br />number of years equal to the active life of the waste management unit plus <br />the closure period [Title 27, § 20410(a)].