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Executive Summary <br /> <br />Environmental Impact Report ES-13 <br />Impact Mitigation Measure (s) Residual Impact <br /> Implement the October 5, 2021 Revised Vapor <br />Intrusion Mitigation System Implementation Work <br />Plan, as approved by DTSC on December 1, 2021 <br /> Implement the October 21, 2021 Revised Community <br />Air Monitoring Plan (CAMP), as approved by DTSC on <br />December 1, 2021 <br /> Prepare a Five Year Remedial Action Review Report <br />for the years 2019-2023 as specified in a DTSC letter <br />dated May 3, 2022 <br /> Implement the August 30, 2022 Soil Vapor Probe <br />Destruction Workplan, as approved by DTSC on <br />September 29, 2022 <br />Upon submittal or completion of the information above, <br />and in accordance with the 2012 Land Use Covenant, <br />DTSC may require actions such as: development of <br />subsurface investigation workplans; completion of soil, <br />soil vapor, and/or groundwater subsurface investigations; <br />installation of soil vapor or groundwater monitoring wells; <br />soil excavation and offsite disposal; completion of human <br />health risk assessments; and/or completion of <br />remediation reports or case closure documents. <br />Subsurface soil, soil vapor, and groundwater <br />investigations, if required, shall be conducted in <br />accordance with a sampling plan that shall be reviewed <br />and approved by the DTSC. <br />The DTSC approval documents shall be submitted to and <br />reviewed by the City prior to issuing grading permits. <br />HAZ-3 Construction Dewatering Requirements. <br />Construction dewatering effluent, if produced, shall be <br />pumped into holding tanks or United Nations (UN)-rated <br />55-gallon drums with appropriate labeling and secondary <br />containment. If dewatering effluent would be discharged <br />to an existing storm drain or drains, a National Pollutant <br />Discharge Elimination System (NPDES) permit shall be <br />obtained from the Regional Water Quality Control Board. <br />If dewatering effluent would be discharged to the San <br />Leandro Water Pollution Control Plant, an industrial pre- <br />treatment permit shall be obtained from the San Leandro <br />Environmental Services Section. <br />Chemical analysis shall be performed in accordance with <br />the receiving facility’s requirements prior to discharge. If <br />concentrations exceed the limits established for the <br />discharge point, the dewatering effluent shall either be (1) <br />transferred into a vacuum truck or properly labeled UN- <br />rated 55-gallon drums and transported offsite for disposal <br />at an appropriately licensed disposal facility; or (2) treated <br />and discharged following sampling and analysis to confirm <br />compliance with permit requirements. <br />HAZ-4 Groundwater Monitoring Well Protection. A <br />November 19, 2020 Redevelopment-Related <br />Groundwater Monitoring Well Network Modification <br />Work Plan (RMD Environmental Solutions 2020c), which <br />was approved in 2021 DTSC letter, was prepared to <br />reduce the potential for damaged or lost wells during <br />development of the project site. Based on available