COMPLIANCE INFO_1986-1995 - Laserfiche WebLink

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UG 24 ' 94 ®E; 2�f�M UGR�` W ROSEVILEE FFD M�E Vol STANDARD OPERATING PROCEDURES RE: EXCAVATION SAMPLING (SOIL•.AND WATER) SOP -2b Soil - Excavation and subsequent soil sampling is performed under the direction of a registered geologist or civil engineer. To reduce the potential for cross -contamination, all excavation equipment is either steam -cleaned or washed prior to use and between excavations. Soll samples are typically collected directly, from the excavation surface or from material removed from the excavation in a.backhoe or excavator bucket. A portion 4f the sampled area or material may be sealed in a plastic bag, jar, or other suitable container for volatile organic screening with either a portable photolonization detector, flame ionization detector, or an explosimeter. Another portion of the sample may be used to describe the excavated material. analysisSoil sampies for chemical --brass varying diamet I Ors and lengths (typically 6 Inchoslong by I Inches outside -diameter) or other appropriate = • sample container..•hand-driven sampler holding an Inset sample container may be used To reduce potential for • • • between samples, the sampler Is cleaned between each sampling event. Upon recovery, the samp;ocontainer 13' sealed to Minimize the, potential, of-volatilizatlon and cross- fne-all'on p'-' M, ical a al sis. B ss sbil sampling tubes are typically closed at each end with plastic caps over Tenon or aluminum foil shooting. - The sealed with duct tape or similar material lacking Inappropriate chemical compounds. The sealeds ample Is labeled and refrigerated for deliveryll'urider strict chain -of -custody, to the analytical laboratory. Water Excavation water samples are not advised, because soil particles typically present may affect the sample, However, If required, water samples are collected either directly from the water surface, if accessible, by dipping the sampling container, or from a clean bailer or similar sampling device lowered Into the excavation. Water samples may be collected from ;the excavating equipment bucket, if necessary. Depending on the intended analyses, 0.5 to. 1 -liter plastic or glass containers, or 40 -milliliter glass, volatile organic analysis (VOA) vials, with "Teflon" septa, are typically used as sample containers. For volatile organic analyses, the water sample Is decanted into each VOA vial In such a manner that there Is no meniscus at the top of the vial. A cap is quickly secured to the top of the vial. The vial Is Inverted and gently tapped to see if air bubbles are present. If none are present, the vial is labeled and refrigerated for delivery, under strict chain -of - custody, to the analytical laboratory. Label Information typically includes a unique sample identification number, job Identification number, sampler Identification, date, and time. ATTACMMFJ'iif8 MWAY IOU