02-15-1994 - City Project #WP-93111 - Approval of Plans & Specs - Installation of Pressure Reducing ValvesE
TO:
FROM:
SUBJECT:
City Manager and City Council
Harry W. Thomas
City of West Camna
Memorandum
AGENDA -
ITEM NO. D-2
CITY PROJECT WP-93111 DATE February
APPROVAL OF PLANS AND SPECIFICATIONS
- INSTALLATION OF PRESSURE
REDUCING VALVES
SUMMARY: Plans and Specifications have been completed
for City Project WP-93111 which provides for
the installation of pressure reducing valves at
tenjocations in the City's water system. The
estimated installation cost is.$130,000.
BACKGROUND
15, 1994
The Covina Irrigating Company has expressed its desire to supply surplus water when
available to the City of West Covina at a cheaper rate than that of Upper San Gabriel Valley
Water District or Three Valleys Water District, the major suppliers of the City's water
needs. The San Gabriel Valley Basin Watermaster has approved.the City's proposal to
purchase water from Covina Irrigating Company..
In order to receive this water, the, City has to utilize. the facilities of the B-4 Pump Station
located at the south east comer of Puente Avenue and Azusa Avenue, and also Suburban's
connection with Covina Irrigating Company at San Bernardino Road and Azusa Avenue
including their feeder transmission main.' The use of pumps of the B-4.Pump Station:11nay
boost the water pressure in several branch lines connected to the Azusa� Avenue
Tra nsmission Main near the intersection of Amar and Azusa'above acceptable operating
levels. It is necessary to install pressure reducing valves and gate valves at ten locations
shown on the attached map to control the maximum water pressure in the branch lines.
On October 19, 1993, the City Council approved the waiver of the formal bidding
procedures and authorized the Finance Director to issue Purchase Orders to purchase
necessary pressure reducing and gate valves. The. City has now received these valves:. and it
is necessary to install these, valves through a formal bidding procedure that would include
pre -bid qualification of the construction contractors. This procedure will ensure retention of
a competent contractor who has considerable experience in this particular type of
construction.
The Plans and Specifications have been prepared and will be available at the Council meeting
on Tues , day, February 15, 1994. The project consists of installation of pressure reducing
valves and related'access I ories, in underground vaults, at ten different locations, in the City's
water system, removal and restoration of existing improvements including all incidental and
appurtenant work.
ANALYSIS
Completion of this work will help ensure a safe secure water supply to customers while
limiting water pressure to acceptable operating levels. The pressure valves and gate, valves
for this project have been delivered to the City and will be ftimished to the Contractor
awarded the installation contract.
Pursuant to the California Environmental Quality Act, State Guidelines, Section 15302 -
Class 2. the aforesaid improvements are of a minor nature and, therefore, exempt from the.
requirements for Environmental Impact Report or Negative Declaration of Environmental
Impact.
City Manager and City Council
Project WP-931 It
Approval of Plans & Specifications
February 15, 1994
Page 2
FISCAL IMPACT
The estimated total cost for, installation of the valves is as follows:
(a)
Construction Cost
$110,000
(b)
Preliminary Engineering
4,000
(c)
Construction Engineering,
Inspection
5,000
(d)
Contingencies
11,000
TOTAL PROJECT COST
$130,000.
The funds previously appropriated for this project amounted to $35,000 which was used to
buy the, pressure I reducing and gate valves. As indicated in the staff report to City Council
on October 19, 1993, the total estimated project cost including materials,, construction,
engineering and contingencies is $165,000. . An additional recommendation would be made
by staff after materials were received to fund design, construction, engineering and
contingencies. After the bids have been opened and actual cost is known, transfer of
appropriate funds from Water Funds reserve will be recommended..
ALTERNATIVES
The only alternatives are to defer or abandon the project. Approximately $35,000 has been
expended already to buy materials. The benefit from this purchase would be lost if the
project does not proceed to completion. Abandonment of the * project would result in
uncontrolled potentially high pressures at the branch lines when delivering Covina Irrigating
Company water or preclude receiving water from this alternative cheaper source.
RECOMMENDATION
It is recommended that the City Council approve the plans and' specifications for City Project
WP-93111 and authorize the City Engineer to call for bids.
W. Thomas
Public Works Division
Manager/City Engineer
HWT:NJP:cn
Attachments
agenda:WP9311lb-mmo
I.N o
LOCATION
K,F�C. & AZUSA AVE.
LAMP POST PIZZA AMAR RD.
N /\A/ CORN.ER BRENT\,jOOD DR, &
AMAR RD,
S /\A/ CORNER WESTPORT ST, &
AMAR RD.
ROLLING\,/GOD AF-T, & AMAP RD.
FAST '--\!D[-: RIDGEWOOD DR. NO,
OF A MAR R. D,
S/\,/ CORNER NATALIE AVE,
TEMPLE AVE.
B AMAR RD,
.4 LP HiA EFTA SHOPPING CENTER
AMAR RD.
C ARL'S JR. & AZUSA AVE,
A! f3 E R NA R D IN 0 F. R E Ed A'-'
'9�
R4
`7
-'\ATION MAP
CITY, PROJECT WP-931 11
INSTALLATION OF PRESSURE
REDUCING VALVES
a,