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' Drajt: Aprrl 5, 1999 <br />Page C-9 <br />C.4.2.2 Sample Preservation <br />Samples will be stored on ice in coolers immediately following collection. Samples should <br />' not be frozen to extend holding times. Chemical preservatives, as required, shall be added to the <br />sample containers (typically by the laboratory prior to shipment to the field). <br />' C.4.2.3 Crrstody Seals <br />Custody seals aze preprinted adhesive-backed seals with security slots designed to break if <br />' the seals aze disturbed. Sample shipping containers (coolers, cardboazd boxes, etc.) are sealed with <br />custody seals in as many places as possible to ensure security. Seals are signed and dated before use <br />' and strapping tape should be placed over the seals to ensure that seals aze not broken accidentally <br />during shipping. Upon receipt at the laboratory, the sample custodian must check (and certify, by <br />' completing the package receipt log) that the seals on coolers, boxes, and bottles are intact. <br />' C.4.2.4 Chain-oj-Custody Form <br />The chain-of-custody (COC) record will be completed, placed in a plastic bag, and taped to <br />' the inside lid of the sample cooler. Instructions for filling out the COC aze given in Section C.5.3. <br />C.4.2.5 Sample Shipment <br />' Samples should be shipped every day during sampling. Samples will be shipped in iced <br />coolers with a completed chain-of-custody form taped to the inside of the cooler lid. Coolers will <br />' be sent to the lab by standard overnight delivery or hand-carved to aColorado-certified laboratory. <br />The choice of laboratory could change during the course of monitoring program. <br />' Samples will be shipped such that the holding times aze not exceeded. <br /> <br />C.5 DOCUMENTATION <br />C.5.1 Field Sampling Data Sheet <br />' Afield sampling data sheet for groundwater samples should be completed at each sampling <br />location. The data sheet will be filled in completely. If items on the sheet do not apply to a specific <br />location, the item will be labeled as not applicable (NA). The following information is included on <br />the data sheet: <br />' ~ Well number <br />~ Date and time of sampling <br />' ~ Person(s) performing sampling <br />' Agapito Associates, Inc. <br />