14 - Project #196-A
ITEM NO. 14
Costa Mesa Sanitary District
&an Independent Special District
Memorandum
To:
Board of Directors
Via:
Scott Carroll, General Manager
From:
Rob Hamers, District Engineer
Date:
March 27, 2014
Subject:Project #196-A Backup Units at Elden, Victoria, Mendoza Stations –
Request for Change Order Approval
Summary
Project #196-A, which has been bid, awarded, and is under construction, proposes to
install a backup pumping unit, suction piping, discharge piping, and building at the Elden
pump station. Project #202, which will be constructed in the 2015-2016 fiscal year per
discussion occurring at the February 18, 2014 Study Session, proposes to replace the
remaining 38-year old valves and force main piping at the Elden pump station.
Because the Irvine Pump Station force main is interconnected to the Elden force main,
bypass operations at the Elden Station are complicated and include nine 5,000-gallon
tanker trucks working each day. In order to simplify this bypass operation, extra valves
can be added now to Project #196-A and these valves will greatly simplify work on the
station any time in the future when work is needed and including when Project #202 is
constructed. If the valves are not added now, some of the new piping installed under
#196-A will have to be modified when Project #202 is constructed and the District will be
paying twice for overlapping work.
Staff Recommendation
That the Board of Directors approvesthe following action:
1.Approve Request for Change Order #1 in the amount of $102,000 to GCI
Construction, Inc. for Project #196-A as shown on the attachedchange order
form and sketch.
Protecting our communitys health and the environment by providing solid wa
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Board of Directors
March 27, 2014
Page 2 of 3
2.Approve the transfer of $102,000 from PICA Analysis Project #198 and closeout
thisproject by transferring the remaining $71,627 of budget back to the Asset
Management Fund.
Analysis
Recently, the District installed a down drain on the incoming Irvine Avenue force main at
the Elden Pump Station as a means to reduce hydrogen sulfide gas and the resultant
corrosion. This work was accomplished with over $40,000 spent on the bypass operation
due to the complicated nature of the interconnection between the Elden force main and
the Irvine force main.
When current project #196-A is complete, the District will have a stand alone bypass pump
in place that will pump the wastewater in the event the regular Elden pumps are non-
operational. After #196-A is complete, the District will construct Project #202 and replace
the 38-year old remaining force main piping and Project #202 is geared to having extra
bypass valves installed.
However, the very place where these valves under Project #202 will be installed will be
dug up for the tie-in of the new #196-A stand-alone bypass pump. Therefore, it is
appropriate to install these valves now rather than modify the new piping at a later time.
The valves being proposed are one 12” plug valve, one 18” plug valve, adding a small
valve vault to keep the valves in close proximity of each other, and an 18” line stop valve
with 12” plug valve adapter. The addition of these valves will provide additional flexibility
immediately under certain shut down scenarios and will also provide simplified
construction when Project #202 is constructed.
Strategic Plan Element & Goal
This item complies with Strategic Plan Element 1.0, Sewer Infrastructureand Goal No. 1.4
System Wide Sewer Replacement and Repair Program.
Legal Review
Not applicable.
Environmental Review
The replacement of valves and piping at an existing pumping station as shown on the
plans for Project #196-Ais categorically exempt under the California Environmental
Quality Act (CEQA) (Public Resources Code Section 21000 et. seq.) under Section 15301
as a “Class 1” “minor alteration of existing public or private structures”, as further
described in Section (b) as “Existing facilities of both investor and publicly-owned utilities
used to provide …. sewerage …”
Board of Directors
March 27, 2014
Page 3 of 3
Financial Review
The total GCI contract cost, including contingency, is $533,720, which was approved at
the December 19, 2013 meeting. The proposed change order is a 19% increase from
GCI’s contract cost of $533,720, which exceeds the general manager’s authorization for
approving change orders. The general manager has authorization to approve change
orders up to 10% of the contract cost.
There are insufficient budgeted funds available to cover the cost of this change order
request. Staff hasdetermined there is no current need for PICA Analysis Project #198
due to the Four Force Mains Rehabilitation Project #200 scheduled to start later this year.
Therefore, staff is requesting the Board approve the transfer of $102,000 from the PICA
Analysis Project #198 and closeout the PICA project by transfer the remaining $71,627 of
budgeted funds back to the Asset Management fund as follows:
AccountIncreaseDecrease
Pump Stn Emerg Eqpt #196-A$102,000
PICA Analysis #198$173,627
Asset Management Fund$ 71,627
Public Notice Process
Copies of this report are on file and will be included with the agenda packet for the April
24, 2014 Board of Directorsregular meeting at District Headquarters and on the District’s
website.
Alternative Actions
1. Do not approve the change order and direct staff to replace the valves as part of
Project #202.
Attachment:Proposed RCO #1
Reviewed by
WendyDavis
Interim FinanceManager
Protecting our communitys health and the environment by providi
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