Hidden Valley-CS050106 (2)MEMORANDUM
To:
From:
Date:
RE:
Ken Griffin, P.E., Directorao~E~gineering/Public
/I///
Jim Witt, City Manager/////
January 6' 200~ ~'~ /
Hidden Valley[Lane / water line replacement
Works
It is my understanding that during the construction of the Hidden Valley Subdivision that it was
ncccssary to replace approximately 350 linear feet of existing 6" water line. The existing 6" water
line was installed in early 1980 as part of the Phillips Addition. The contractor's original intent was
to tie onto the existing water line and extend the water line throughout the Hidden Valley
subdivision.
However, in making the tie-in it was noted that the existing 6" water line was of substandard quality
in the following regard: 1. The material was a thin wall PVC, which does not meet our
requirements for water line material; 2. The diameter of the water line was 6" as opposed to our
minimum diameter of 8"; and 3. The depth of thc water line was substandard.
During the actual dirt work associated with the gradiug of the street for the construction of Hidden
Valley Lane, the contractor hit and damaged the existing 6" PVC water line, because of its
substandard depth. At that time, a decision was made to replace the existing PVC water line
beneath the extension of Hidden Valley Lane with the city's required 8" PVC water line utilizing the
correct material and at the appropriate depth.
Trying to construct the extension of Hidden Valley Lane over the existing 6" xvater line would have
created a situation where the integrity of the future street would have been in question.
Because of the substandard PVC material, the diameter of the existing 6" water line and the
substandard depth of the 6" water line, I have declared the expenditure of $8,850 to Llano Utility
Services, Inc. as an emergency expenditure under guidelines provided in thc Texas Local
Government Code, Section 252.022 a. 1. which states "A procurement made because of public
calamity that requires immediate appropriation of money ... to preserve the property of the
municipality."