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I ;TI Frontier Transportation, Inc. Well Installation Work Plan November 14, 2006 Page 6 6.0) FIELD DOCUMENTATION AND CHAIN-OF-CUSTODY The following sections describe the recording system for documenting all site field activities and the sample Chain-of-Custody Program, 6.1) Field Log Book An accurate chronological recording of all field activities is vital to the documentation of any environmental investigation. To accomplish this, field logbooks will be maintained by the field team to provide a daily record of significant events, observations, and deviations from the work plan and measurements collected during the field activities. The BEA on site supervisors j will determine the necessity for any deviations from the work plan. The records will contain sufficient information so that the work activities can be reconstructed without relying on the collector's memory. All entries will be signed, dated and made with waterproof ink. Corrections to the logbook will be made by drawing one line through the error, initialing and dating. The logbook will always be stored in a secure location. I 6.2) Chain-of-Custody The objective of the Chain-of-Custody Program is to allow the tracking of possession and handling of individual samples from the time of field collection through laboratory analysis. Once a sample is collected, it becomes part of the Chain-of-Custody process. A sample is "in custody" when (1 ) it is in someone's possession; (2) it is within visual proximity of that person; (3) it is in that persons possession, but locked up and sealed (e.g. during transport); and (4) it is in a designated secure sample storage area. , I 6.2.1) Chain-of-Custody Record and Request for Analysis Report Chain-of-Custodyrecords establish the documentation necessary to trace sample ary p possession from the time of collection to analysis. A serialized Chain-of-Custody and Request for Analysis Report will be completed and will accompany each batch of samples. The record : will contain the following information. - i * Project name and number; * Request for Analysis control number (for cross reference); * Names of sampling team members; * Laboratory destination; it II