An automated microprocessor-controlled monitoring system for the sampling and analysis of environmental contamination has independent multiple sample chambers 47, 48. The sample chambers are populated with multiple analytical sensors 59, 60, 61, Multiple water level sensors 49, 50, 135 located in the sample chambers are capable of determining the volume of sample, or standard, introduced into the individual sample chambers. The monitoring system is standardized with independent calibration modules 7L 80, 89 to support the analytical sensors in the sample chambers. This configuration of a monitoring system allows a “plug and play” configuration with all analytical sensors capable of standardization. The system anticipates the incorporation of future sensing methodologies through its flexible design. The disclosed system is capable of operating multiple pumps 17, 18, 19 and measuring the water levels 30, 31, 32 in multiple monitoring wells 36, 37, 38 allows for the automated acquisition of data for slug, aquifer, and tracer tests. Other embodiments are described and illustrated.