Laserfiche WebLink
ameO <br /> • Collection and laboratory analysis of appropriate trip blank samples, equipment rinsate <br /> blank samples, and duplicate samples to monitor for contamination of samples in the <br /> field or the laboratory; and <br /> • Collection and laboratory analysis of controlled standards and matrix spike samples to <br /> evaluate accuracy and precision. <br /> Trip blanks will be prepared by the laboratory and included in each shipment containing <br /> a samples to be analyzed for TPHg, BTEX, fuel oxygenates, lead scavengers. <br /> Equipment rinsate blank (EB) samples contain de-ionized water passed through and over the <br /> surface of decontaminated sampling equipment. .The rinse water is collected in sample <br /> bottles, preserved as necessary, and handled in the same manner as the samples. EB' <br /> samples are used to monitor effectiveness of the decontamination process. EB samples will <br /> be collected at a frequency of one per day. The EB samples will be analyzed for TPHg, BTEX, <br /> fuel oxygenates, lead scavengers. <br /> Duplicate groundwater samples will be collected for groundwater samples only at a rate of one <br /> duplicate per every 10 samples. These samples will be submitted to the analytical laboratory <br /> as blind samples with no indication as to which primary sample was duplicated. The duplicate <br /> samples will be analyzed for the same constituents as the primary sample. <br /> 3.5 SAMPLING LABELING AND SHIPPING <br /> Samples will be assigned a unique identification with labels showing project number, sample <br /> location, and depth interval denoted either by depth or a sequential numbering system (if <br /> applicable). Samples will be transferred to the analytical laboratory under chain-of-custody <br /> (COC) control. The COC will include the sample identification, location, date and time of <br /> sampling, number and type of containers, and a list of analyses to be performed. <br /> Groundwater samples will be packed in ice chests containing sealed blue ice or wet ice <br /> contained in double-bagged sealable plastic bags. Special care will be taken to pack sample <br /> containers to minimize breakage. Ice chests will be delivered daily to the analytical laboratory. <br /> 1 3.6 INVESTIGATION WASTE MANAGEMENT <br /> �•r Soil cuttings, purge water, and rinse water generated during drilling and sampling will be <br /> rtemporarily stored on Site pending profiling, transportation, and off-Site disposal or recycling at <br /> •+ an appropriate facility. Caltrans will store soil cuttings, purge water, and rinsate in Department <br /> of Transportation (DOT) approved 55-gallon drums. All waste containers will be clearly <br /> labeled with generator contact and phone number, drilling location(s), and date of generation. <br /> AMEC Geomatrix, Inc. <br /> P:\Project\14000s\14443_Caltrans\TO 10\11000_PLANSVIS WP—March 2010VWS WP.doc 11 <br /> Z <br />