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Vapor Intrusion Assessment Work Plan Project number:60653972 • Person or organization to whom the book is assigned • Book number • Project number(if different from site number) • Site name and number • Start date of notebook entries Entries into the notebook may contain a variety of information.At a minimum,notebook entries must include the following information at the beginning of each day: • Date • Start time • Weather conditions • County, state, and site address • Field personnel present and directly involved • Level of personal protection being used on site In addition,information recorded in the field notebook should include(but not be limited to)the following: • A detailed description of sampling locations,physical parameters, and groundwater level measurements. • Information on field QC samples(i.e., duplicates and trip blanks). • Observations about the site and samples(odors, appearance,etc.). • Information about any activities extraneous to sampling activities that may affect the integrity of the samples(e.g., low-flying aircraft nearby,fossil-fueled motors being used nearby,painting operations being carried out upwind of sampling sites,etc.). • Equipment used on site, including time and date of calibration.Equipment calibration also will be recorded in the calibration logbook. • Maps or photographs acquired or taken at the sampling site. • Forms used during sampling. Notebook entries will be made in indelible black or blue ink.No erasures are permitted. If an incorrect entry is made,the data will be crossed out with a single strike mark and dated and initialed by the originator.Entries will be organized into easily understandable tables, if possible.The PM designee will review field notebooks that result from field operations for completeness and accuracy upon completion of the project. 5.5 Chain of Custody Procedures Proper chain-of-custody and sample tracking methods will be used during sample collection.These methods include maintaining the documentation necessary to trace sample possession and the proper completion of standardized chain-of-custody forms used to accompany samples shipped to a California- certified laboratory. Field personnel(samplers)are responsible for performing sample custody, documentation, and tracking tasks when collecting environmental samples meant for laboratory analysis or archiving. Samplers are responsible for the care and custody of the collected samples and the proper and complete preparation of Prepared for: California Regional Water Quality Control Board,Central Valley Region AECOM