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L Groundwater Sampling SOP Revision No 0 Date January 01, 1995 page 5 of 5 Volume of water purged from the well Complete description of the decontamination procedures used to clean the sampling equipment If the equipment was pre-cleaned at the warehouse or laboratory the lot associated with this cleaning must be recorded in the logbook The source of the analyte free water utilized on site Include any lot numbers or batch numbers in the logbook • Note which well was sampled using the equipment blank bailer • Any observable physical characteristics of the groundwater (e g , color, sheen, odor,) as it is being sampled • Sample temperature, pH, and specific conductance will be recorded for each sample • Weather conditions (e g , air temperature, wind conditions, recent heavy rainfall, conditions) at the time of sampling will be recorded • The exact time of sample collection and the person who collected the sample • If any field forms are utilized the forms must be referenced in the logbook For example following should be written in the logbook to reference a form Refer to the water quality sheets for information concerning SAMPLE IDENTIFICATION Sample nomenclature must be unique an collection always e f lowing format datof sample collection All samples must be identified utilizing t project#/ sample id/date (e g MJ50/MW-3/122094, MJ53/INF/122094, etc ) For example, a sample collected for project site MJ50 for monitoring well MW-3 on December 20, 1994 would have the following sample id MJ50-MW-3-122094. CONTAINMENT AND DISPOSAL OF PURGE WATER: Purge water will be collected into DOT 17-H d pr55 operly er 1 disposed ofn drums e _Drums remloval l be transported to an appropriate treatment facility p P Y and disposal practices shall be thoroughly documented CAGWSOP ooc