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Foothill Landfill Monitoring Implementation Plan MIP Page 19 • Sample ID • Sample Date/Time Sample collection information is available on the Chain of Custody, in addition, San Joaquin County maintains a Storm Water Monitoring Data book that contains the following forms pertaining to storm water monitoring and testing. • Form 1 - Sampling Event Visual Observation • Form 2 - Monthly Visual Observations • Form 3 - Annual Comprehensive Facility Compliance Evaluation The forms listed above contain all of the information required by the annual evaluation and the Annual Report for the General Permit - records that are to be maintained by the facility for at least five (5) years. 4.2.4 Chain of Custody Procedures The chain of custody form, documents sample possession from the time of collection until the sample is analyzed. It also serves as a sample inventory and an analysis order form. Once the chain of custody record is received by the laboratory it is checked for accuracy and completeness (see Appendix G for a copy of the current chain of custody). Information for each sample including the sample number, date of sampling, time of sampling, the sample matrix, and the required analyses, is entered on the form. The form should be filled out with a waterproof pen after the samples are labeled and ready for shipment. To keep it dry, the chain of custody record should be placed in a sealed plastic bag and sent to the laboratory inside the sample cooler. Sampling personnel are responsible for retaining a copy of the original chain of custody. 4.2.5 Analytical Information The sampling personnel or an authorized contractor must properly collect, pack and document the sample collection utilizing the methods and procedures described in Section 4.2.1 through Section 4.2.4. Once the samples have been collected and prepared for shipment to the laboratory, the sampling personnel or authorized contractor will contact the laboratory for sample pickup by a courier or have delivered the samples to the laboratory. Various analyses have different hold times (the maximum time allowed between the collection and analysis of a sample). Samples must be transported to the laboratory as soon as possible but no more than 8 hours after sample collection to avoid exceeding the holding times. The pH must be field tested within 15 minutes of collecting a sample. FGL Environmental 2500 Stagecoach Road Stockton, CA 95215 Telephone: (209) 942-0182 Fax: (209) 942-0423 ELAP No. 1563