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Soil Vapor Sampling SOP Page 3 of 11 Stantec Rev. 1.0 Apr 2019 4.0 RESPONSIBILITIES AND QUALIFICATIONS The Project Manager or Task Leader will be responsible for assigning project staff to complete sub-slab vapor and or soil vapor sampling activities. The Task Leader will also be responsible for assuring that this and any other appropriate procedures are followed by all project personnel. The project staff assigned to the sub-slab vapor and or shallow soil gas sampling task will be responsible for completing their tasks according to this and other appropriate procedures. All staff will be responsible for reporting deviations from the procedure or nonconformance to the Task Leader, Project Manager, or Project QA/QC Officer. Only qualified personnel shall be allowed to perform soil vapor sampling. At a minimum, Stantec employees qualified to perform soil vapor sampling will be required to have: • Read this SOP; • Indicated to the Task Leader that all procedures contained in this SOP are understood; • Completed the OSHA 40-hour training course and/or 8-hour refresher course, as appropriate; and • Previously performed soil vapor sampling in a manner generally consistent with the procedures described in this SOP. Stantec employees who do not have previous experience sampling soil vapor will be trained on site by a qualified Stantec employee and supervised directly by that employee until they have demonstrated an ability to perform the procedures. The Project Manager shall document personnel qualifications related to this procedure in the project QA files. 5.0 REQUIRED MATERIALS The following is a typical list of equipment that may be needed to perform sub-slab and soil vapor sampling: • Rotary hammer drill and associated drill bits • Photoionization detector (PID) or other air monitoring instrumentation as required by the HASP • 4-mil-thick plastic sheeting • Tape measure • Broom, dustpan or hand vacuum • %-inch outside diameter Teflon (or NylaflowT"") tubing THIS INFORMATION FOR AUTHORIZED COMPANY USE ONLY STANTEC CONSULTING