Four Corner - Texas Water Development Board

IV. Alternatives Considered
A. Description - Two concepts for water supply and wastewater treatment were
investigated as part of this study. One concept included the construction of a water
supply plant and wastewater treatment plant within the limits of the planning area
(referred to as the "On-site" option) which would provide services only for properties
within the planning area boundaries. The other concept involves the acquisition of
"surplus" capacity in water supply and wastewater treatment facilities within
neighboring municipal utility districts. Use of surplus capacity requires the Four Corners
area to construct only the water distribution and wastewater collection systems within
their area and these systems would then be "hooked up" to the adjacent water supply and
wastewater treatment plants. Only two adjacent districts, Kingsbridge MUD and North
Mission Glen MUD indicated that water and/or sewer capacity was currently available
or would be available in the near term (see Section I 0 for summary of all district
contacts).
Appendices A, B, and C provide water distribution and wastewater collection system
layouts for the alternatives considered from Kingsbridge MUD, North Mission Glen
MUD, and On-site, respectively. Water distribution layouts are shown only for the Onsite
option and connection to Kingsbridge MUD. North Mission Glen is currently
evaluating their water supply system and will not be able to assess their surplus water
capacity until completion of their study. Wastewater collection systems are shown for
all three options.
The wastewater collection schemes for the On-site, Kingsbridge MUD and North
Mission Glen MUD options are very similar with 12-inch gravity trunk sewer lines being
located on Richmond-Gaines Road and Boss-Gaston Road and 8-inch gravity sewer
lines being used throughout the residential areas. Three lift/pump stations are required to
provide service to the total planning area because of the size of the planning area, the
limitations on the depths of gravity sanitary sewer construction and the potential for
construction in wet sand conditions. Under the On-site scenario, one of the three
stations would be constructed at the site of the wastewater treatment plant facility.
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Preliminary Engineerng Report