PERMIT FILE - 9/3/2008, 9:12:17 AM-MR1

Home Browse Search

SOP NUMBER 8.0 Page 6 of 10 Field Parameter Measurements Furthermore, as described below a duplicate set of field parameter measurements will be collected for every 10 sampling stations. 5.3.1 QC Checks and Acceptance Criteria One duplicate field parameter measurement shall be collected for every ten sampling locations (10% frequency). Field parameter measurements are considered satisfactory if the duplicate measurements fall within the acceptable range in the table below. Field Parameter Acceptable Range pH + 0.1 H unit Temperature +10% Oxidation-Reduction Potential + 5 mV Conductivity +10% Turbidity ± 10% Dissolved Oxygen + 0.1 mg/L If duplicate acceptance criteria are not met, the instrument must be re-calibrated and new parameter measurements obtained at the sample location where the original duplicate sample did not meet acceptance criteria. 6.0 DOCUMENTATION Documentation of observations and data acquired in the field will provide information on the activities conducted and also provide a permanent record of field activities. The observations and data will be recorded with waterproof ink in a permanently bound weatherproof field logbook with consecutively numbered pages, and/or on field data sheets as appropriate. 6.1 FIELD LOGBOOK All information regarding calibration of field instruments will be recorded in the field logbook. The following information will be recorded in the field logbook: • Type of meter calibrated and instrument manufacture (the instrument serial number should be recorded at the start of work and if instruments are changed) • Date of calibration • Person(s) performing the calibration • Calibration solutions used • Results of calibration measurements • Any deviations from the SOPS 6.2 FIELD NOTES Powertech 4/23/2007 R Squared Inc Rev SOP 8-1 JAB 8-6