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North County Recycling Center and Sanitary Landfill Monitoring Implementation Plan Page 16 calibrated pH meter or (if still at Baseline status, and never having reached Level 1 Status) litmus paper. A summary of preservation techniques is included in Appendix B, including Analytical methods, holding times, and annual and instantaneous NALs. Sample storage is an integral part of the sample preservation. The samples are to be stored until they are transported to the laboratory at a temperature of 4 degrees Celsius either in a refrigerator or on ice in a cooler. A summary of storage temperatures is also included in Appendix B. 4.2.2 Sample Labels Each sample is labeled with labels provided by the laboratory and contains the following information: • Facility Name • Sample Point as follows: “SW-3” • Initials of Sampling Personnel • Date and time of collection • Preservative present in container (i.e. “Hydrochloric Acid” or “HCl”) 4.2.3 Sample Log / Sample Collection Information General sampling information is recorded on the Chain of Custody at the time of sampling in sufficient detail so that such information can be readily available. • Facility Name • Sample Point/Location (i.e. SW-3) • Signature and Printed Name of Person Responsible for Sampling • 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