1989-03-23_REPORT - C1981012 (2)

Home Browse Search

2.0 MONITORING METHODS 2. 1 Surface Water Monthly surface water samplings were conducted at each of the 11 designated stations PRS-1 , PRS-2 , PRS-3 , WPD-1 , MDNE-1 , MDGE-1 , CCS-1 , CCS-2, LCS-1 , WCS-1 and CHC-1 during the last week of each month. Expanded water chemistry was sampled quarterly at surface water stations WPD-1 , MDNE-1, MDGE-1 , CCS-1 , CCS-2, LCS-1 , WCS-1 and CHC- 1 . Quarterly samples were taken in February, May , August and November. The November sampling was also considered the annual sample with additional water chemistry analyses being performed at all stations. During each monthly sampling , in-situ water quality measurements of temperature, conductivity, dissolved oxygen, and pH were made using a Hydro Lab Model 4000 field sampling kit. An expanded list of water quality parameters was collected during the quarterly sampling which were sent to Core Laboratories, Inc. , of Denver for laboratory analysis. Filtration of certain water quality parameters was accomplished in the field with a Geotech 2. 4 liter barrel filter. Quality control of water analyses was performed by two methods . Prior to any field sampling, the Hydro Lab Sampling Kit was calibrated to known standards produced in the laboratory. A record of each calibration was kept as to the date , person performing the calibration , and adjustments made . Core Laboratories , Inc . also maintains internal quality control of sample handling and instrumentation calibration. Water quantity or flow measurements were conducted by a number of methods. At the beginning of the program, a straight, flat, stable reach of each stream station was selected as a sampling location. Near the downstream end of the reach, a cross-section was surveyed perpendicular to the stream flow and permanently marked with stakes and flagging. Flow was measured with a Teledyne-Gurley Model -9-