"GROUND-WATER QUALITY CLASSIFICATION AND RECOMMENDED SEPTIC
TANK SOIL-ABSORPTION- SYSTEM DENSITY MAPS, CASTLE VALLEY,
GRAND COUNTY, UTAH by Mike Lowe, Janae Wallace, Charles E. Bishop, and
Hugh A. Hurlow View to the northeast of Castle Valley, Grand County, Utah. The
foreground shows part of the River Ranchos Community, where most of the
population in the valley resides. The lone spire of Castle Rock is on the end
horizon of Parrio ..."
"The volcanic rocks contain interbedded sedimentary deposits in places (Dixon
and others, 2007; Sweetkind and others, 2007). Hydrogeologic units Tvt1 and
Tvt2 correspond directly to lithostratigraphic units Tv1 and Tv2, respectively, and
hydrogeologic unit Tvf includes lithostratigraphic unit Tv3 (figure 4.1). The
lithology, thickness, and distribution of these units vary substantially within the
study area. Hydrogeologic unit Tvt1 ..."