Mailbox Only-RFQual- Environmental Consultant and Cleanup Services for Project at 1457 H Street

The selected consultant/contractor will be responsible for the following tasks and as needed to meet DTSC standards, including but limited to:• Supplemental Environmental Investigation: Conduct additional investigation as outlined in the Draft RAP or as necessary to address data gaps and further define the nature and extent of contamination. This may involve soil, groundwater, and/or vapor sampling and analysis, including, but not limited to, the following additional tasks: o Collect representative samples of project areas to determine the horizontal and vertical contamination of site to determine the necessity of site excavation using ISM sampling and decision units. o All soil and soil gas samples should be tested for all chemicals of concern and must be compared to the latest DTSC HHRA Hero Note 3 Screening Levels or USEPA Regional Screen Levels. o Additional sampling of the soil stockpile on site with thorough data collection such as sampling methods (composite sampling or incremental sampling), total volume of sample collected, number of samples, other information as necessary. o Additional soil vapor probe and soil vapor well sampling locations, as needed at3 of 25 required below ground surfaces depths of 5 and 15 feet. o Additional groundwater sampling locations and assessment, as needed.• Environmental Review under the California Environmental Quality Act (CEQA) as needed.• Remedial Action Plan Finalization and Implementation: Finalize and implement the remedial actions outlined in the RAP, with any necessary modifications based on the supplemental investigation findings. This may involve soil excavation and disposal, groundwater treatment, vapor extraction, or other remediation techniques. o A well-defined workplan for contaminated soil disposal, no reuse of soil on-site or off-site.• Monitoring and Reporting: Conduct post-remediation monitoring to ensure the effectiveness of the cleanup and prepare regular progress reports for the city.