Introduction In July 1992, the Wyoming Department of Environmental Quality (DEQ) contracted with the Wyoming Water Resources Center (WWRC) at the University of Wyoming to create an underground injection well geographic information system (GIS) database for Wyoming DEQ's Underground Injection Control (UIC) Program (Hamerlinck, 1993). This was an initial step toward the ongoing goal to obtain a comprehensive spatial inventory of all UIC facilities in Wyoming. This project was finalized on June 30, 1993 but has not been updated in the period since.
In order to maintain the accuracy and applicability of this GIS database updates, and reviews of the data were required. On September 30, 1995 DEQ contracted with the WWRC once again to both update and enhance the UIC GIS database as well as to update the Public Water Supply (PWS) Operator Certification Program database.
Wyoming has a requirement that operators of public water supplies and publicly owned disposal systems must have a licensed operator for each system. In addition, all mobile home parks must register with the Wyoming Department of Agriculture. To notify operators of public water systems (PWS) the UIC Program has utilized the Department of Agriculture's list of trailer parks. The operator certification program has surveyed many of the operators of public water supplies and questioned each about sewage disposal. Within cities and counties, records exist of the size and location of various public water supplies and sewage disposal systems to varying degrees.
The purposes of this project were to build on work previously completed by the WWRC in 1993 developing a UIC Geographic Information System (GIS) for Wyoming and to update UIC and PWS databases. This document is the project's final report and will detail the methods employed and results obtained from the revisions and updates made to the DEQ/WQD databases. For further background on the UIC program or on the previous project refer to the original UIC-GIS final report (Hamerlinck, 1993).
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