Laserfiche WebLink
Equipment Decontamination SOP <br /> • Keys -to access existing on-site locks (if appropriate) <br /> Procedure-specific equipment/supplies include: <br /> • Non-phosphate detergent (Alconox/Liquinox) <br /> • Tap water <br /> • Distilled or deionized water <br /> • Solvents for equipment wipe downs (optional; isopropyl alcohol, acetone, methanol) <br /> • Long and short handled brushes <br /> • Bottle brushes <br /> • Paper towels or absorbent shop towels (ex. White Rags or WypAll) <br /> • Plastic tubs or buckets <br /> • Trash bags <br /> • Optional: 10% acid solution for metal contamination <br /> ZQ Procedure: <br /> For subcontracted fieldwork, subcontractors shall describe all decontamination of drilling <br /> equipment, well construction materials, sampling equipment, tools, etc., in the project work plan. <br /> All samples and equipment leaving the contaminated area of a site must be decontaminated to <br /> remove any contamination that may have adhered to equipment. This includes casing, drill bits, <br /> auger flights, the portions of drill rigs that stand above boreholes, sampling devices, and <br /> instruments, such as slugs and sounders. In addition, the subcontractor shall take care to prevent <br /> the sample from coming into contact with potentially contaminating substances, such as tape, oil, <br /> engine exhaust, corroded surfaces, and dirt. <br /> 8.0 General <br /> 1. Field equipment shall be decontaminated before it is used if the cleanliness of equipment <br /> is unknown, and after each use. <br /> 2. Before proceeding, obtain the necessary equipment and supplies (see 7.0 <br /> Equipment/Supplies). This list provides general guidance and may require modification <br /> for project-specific needs. Restock supplies as necessary. <br /> 3. Review the sampling plan to determine if equipment blank rinsate(samples) are required. <br /> If collection of equipment blanks is required, refer to QA/QC Sample Collection SOP. <br /> 4. Prepare the decontamination zone in accordance with Site Preparation and Control <br /> SOP. <br /> 5. Don appropriate PPE. <br /> 9.0 Decontamination Procedures <br /> Decontamination by Rinsing <br /> This is normally performed when contaminant concentrations are negligible or are of a nature <br /> where detergents are not necessary. This method is particularly applicable for water soluble <br /> compounds or those of an inorganic nature. Contaminants that will not readily adsorb onto the <br /> surfaces of equipment and are easily rinsed off the equipment fall into this category. <br /> 1. Wipe off the equipment using a clean, disposable paper towel or shop towel to remove <br /> Control#:AG-20001-00 Page 5 of 8 <br /> File Name:Equipment Decontamination SOP <br />