SR0084701 - Laserfiche WebLink

Home Browse Search

Soil Vapor Sampling Work Plan Page 3 LSP Area,Lodi,California October 13,2021 • LSP SVE Pilot Test — Following the installation of the SVE wells, CHT will prepare a Work Plan for performing the SVE pilot test and submit it to the Water Board for approval. Presently, the City envisions performing a SVE pilot test for a period of 5 days using a mobile SVE unit. If the 5-day pilot test system operation results in favorable VOC mass removal rates, the pilot test system operation will be extended to 30 days so as to expeditiously reduce concentrations of VOCs in soil vapor; and, • LSP SVE Pilot Test Report—Prepare a final report documenting the results of the SVE pilot test and submit it to the Water Board CHT will prepare a separate Work Plan for performing the SVE Pilot Test. The Work Plan outlines the methodology to collect discrete depth soil vapor samples which will be used to delineate the vertical extent of the PCE/TCE in soil vapor in the area behind the industrial waste pump station, and design the proposed SVE pilot test including the proposed SVE wells. SOIL VAPOR SAMPLING METHODOLOGY Prior to performing the discrete depth soil vapor sampling, CHT, on behalf of the City, will perform the following activities— • Obtain permission from building owners: The City will send a letter to the owner of the industrial properties seeking permission to install the PSG samplers in their parking lot. • Obtain an Encroachment Permit: CHT will obtain an encroachment permit from the City to install the soil vapor borings in the public right of way. • Obtain Boring Installation Permits: Obtain the necessary permits from the San Joaquin Department of Environmental Health (SJDEH). • Prepare a Health and Safety Plan (HASP): A Site-specific Health and Safety Plan(HASP) will be prepared and utilized in accordance with 29 CFR 1910.120 and Title 8 California Code of Regulations Section 5192 to address potential hazards at the Site during the proposed field activities. The HASP will be reviewed, signed, and adhered to by all onsite personnel including field staff, subcontractors, and Site visitors during the performance of the fieldwork. The HASP will include project objectives, assessments for potential hazards which may be encountered at the Site and associated with chemicals of potential concern (COPC), personal protective equipment and personnel monitoring, Site organization, and emergency contacts. The HASP will remain on-Site during all fieldwork. • Underground Utility Survey: Prior to initiating drilling activities, CHT will mark the soil vapor borehole locations in white paint and contact Underground Service Alert (USA) at least 72-hours prior to the start of fieldwork. Additionally, a private utility locator will also be retained to search for other on-Site subsurface utilities and/or obstructions that may or may not be marked by USA. 175 N EL MONTE AVENUE,LOS ALTOS,CA 94022 TEL:415-424-3009