Page 305 - Southlake FY20 Budget

Debt Service Funds Expenditures

Revenue Bond Overview

Revenue bonds are used to fund construction of city infrastructure such as water
and sewer system improvements. Debt service on these bonds is covered by utility
ratepayers. Some projects currently under construction that are funded through
these types of bonds are:

• 8-inch Waterline Upsizing along Whispering Lane and Whispering Dell
Court: Whispering Dell Estates is a small (two cul-de-sac) residential
development platted in the early (‘80s) eighties. The city’s water
distribution system extended into this development with 6-inch diameter
lines that dead-end at each of the cul-de-sacs. These water lines were
replaced with 8-inch diameter lines, and set up for future looping options.
Waterline Upsizing
These water lines were upgraded and completed the city’s water distribution
system, resulting in increased water flow volumes and improved water
pressures to enhance water quality and public safety. New fire hydrants, valves
and other appurtenances were installed to provide a complete and functional
system meeting today’s standard.

• Sewer Improvements – North Carroll Avenue, Casey Court, Market Loop,
Commerce Street, and Summerplace Lane: This was a bundled project
that focused on upgrading existing sanitary sewer systems as well as
extending service to additional properties. On the east side of town
along Market Loop and Commerce Street, the previous sanitary sewer
system had deteriorated and required weekly maintenance to keep it
operational. Approximately 2,120 linear feet of existing 6-inch main was
replaced with 8-inch diameter sewer line to meet today’s standards.
Sewer Improvements
Phase 2 of the project focused on North Carroll Avenue north of
State Highway 114. This project replaced existing 6-inch sewer lines,
some of which were located under buildings, with 8-inch sewer line.
This phase also provided sanitary sewer service to five additional
properties on Carroll Avenue, Highland Street, and Casey Court.

The final phase of this project replaced approximately 1,000 linear feet of
existing 6-inch main with 8-inch sewer line on Summerplace Lane. Besides
being undersized, the previous sanitary sewer system was shallow and required
extensive, regular maintenance due to improper service connections. The
new sewer main was placed at a more conventional depth and new service
connections were made for all customers.

The schedule at right shows the City’s outstanding revenue bond debt, including Sewer Improvements
principal and interest amounts as well as the bond maturity date.

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