This report outlines results from three years of RCA model development for the Skeena Region. It includes the development of standard methods for collecting and analyzing data for use in the RCA for bio monitoring in the Skeena region, results of statistical analysis used in the development of alternative RCA models for the Skeena Region, a comparison of modelling outcomes and a recommendation of a final model for uploading to the CABIN website for routine use, case examples to show applicability of the RCA approach to assessing site quality in northern British Columbia, and recommendations for improvements to field data collection forms and application and use of the RCA model on the CABIN website.