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<br />RESOLUTION NO. 2025-042 18 <br />l. Prepare a Five-Year Remedial Action Review Report for the years 2019-2023 as specified in a <br />DTSC letter dated May 3, 2022 <br />m. Implement the August 30, 2022, Soil Vapor Probe Destruction Workplan, as approved by DTSC <br />on September 29, 2022 <br />Upon submittal or completion of the information above, and in accordance with the 2012 Land Use <br />Covenant, DTSC may require actions such as: development of subsurface investigation workplans; <br />completion of soil, soil vapor, and/or groundwater subsurface investigations; installation of soil <br />vapor or groundwater monitoring wells; soil excavation and offsite disposal; completion of human <br />health risk assessments; and/or completion of remediation reports or case closure documents. <br />Subsurface soil, soil vapor, and groundwater investigations, if required, shall be conducted in <br />accordance with a sampling plan that shall be reviewed and approved by the DTSC. <br />The DTSC approval documents shall be submitted to and reviewed by the City prior to issuing grading <br />permits. <br />74. Construction Dewatering Requirements (HAZ-3). Construction dewatering effluent, if produced, <br />shall be pumped into holding tanks or United Nations (UN)-rated 55-gallon drums with appropriate <br />labeling and secondary containment. If dewatering effluent would be discharged to an existing storm <br />drain or drains, a National Pollutant Discharge Elimination System (NPDES) permit shall be obtained <br />from the Regional Water Quality Control Board. If dewatering effluent would be discharged to the San <br />Leandro Water Pollution Control Plant, an industrial pre-treatment permit shall be obtained from the <br />San Leandro Environmental Services Section. <br /> Chemical analysis shall be performed in accordance with the receiving facility’s requirements prior <br />to discharge. If concentrations exceed the limits established for the discharge point, the dewatering <br />effluent shall either be (1) transferred into a vacuum truck or properly labeled UN-rated 55-gallon <br />drums and transported offsite for disposal at an appropriately licensed disposal facility; or (2) treated <br />and discharged following sampling and analysis to confirm compliance with permit requirements. <br />75. Groundwater Monitoring Well Protection (HAZ-4). A November 19, 2020, Redevelopment-Related <br />Groundwater Monitoring Well Network Modification Work Plan (RMD Environmental Solutions 2020c), <br />which was approved in 2021 DTSC letter, was prepared to reduce the potential for damaged or lost <br />wells during development of the project site. Based on available development plans at that time, the <br />monitoring wells were designated for either: <br />a. Protection in areas where minimal grade changes are anticipated. These monitoring wells shall <br />be marked with paint and/or installation of delineators/snow fencing/bollards. The project <br />applicant and/or General Contractor shall protect these groundwater monitoring wells and <br />maintain access to the wells for routine monitoring to the extent practicable; or <br />b. Destruction in areas within the building footprint and areas with substantial grade changes. <br />The DTSC shall be notified of changes to these designations based on modifications to the