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ES-RR&IH-001 ® Stantec Soil Sampling SOP Page 9 of 11 Rev. 2 Jun 2016 8.4.2 Excavation Decontamination Decontamination protocols must be carefully designed and constructed to deal with the chemicals of interest and ensure that the rinse solutions and solids are contained within the contamination reduction zone. The backhoe bucket will be decontaminated prior to excavating each excavation. The entire backhoe, bucket, and tires will be decontaminated at the conclusion of the trenching operation. Decontamination will involve using a steam cleaner with an AlconoxTM solution or pressure washer and rinsing using a steam cleaner or pressure washer with potable water. Backhoe decontamination will take place at the decontamination area located adjacent to the maintenance building or at another appropriate location. The sampling equipment will be decontaminated prior to collecting each sample. Decontamination will consist of washing the equipment with a scrub brush in a bucket with an AlconoxTM solution (or equivalent) and rinsing the equipment in a bucket filled with tap water. The date and time of decontamination of the backhoe and sampling equipment will be recorded in the field book and/or data collection forms. 8.5 Sample Containers, Storage, and Holding Times Refer to the Project Sampling and Analysis Plan (SAP) for project specific instructions on proper containers, storage of samples and allowable holding times. 9.0 QUALITY CONTROL CHECKS AND ACCEPTANCE CRITERIA Refer to the QAPP and SAP for specific quality control checks and acceptance criteria. 10.0 DOCUMENTATION A borehole log will be completed for each hollow-stem auger or direct-push borehole. The field notebook and/or data collection forms will contain the following information: • Project name and number. • Drilling company's name. • Date drilling started and finished. • Type of auger and size (ID & OD). • Type of equipment for air monitoring (PID or FID). • Air monitoring calibration and measurements. • Well completion and graphic log. • Driller's name. • Geologist's or engineer's name. THIS INFORMATION FOR AUTHORIZED COMPANY USE ONLY STANTEC CONSULTING