HomeMy WebLinkAboutClassADisinfectionDesignContract_Jan2020Class A Disinfection Facilities, Engineering Services (P80098) Contract Award
Todd Miller
January 10, 2020
1
Engineering design services for:
Class A recycled water disinfection and production facilities (“Class A Disinfection Facilities”)
Optional integration of seismic resiliency upgrades to the high rate chlorine contact basin (HRCCB)
Optional integration of re-sized pumps for the tertiary filter system
Contract cost:
Not-to-exceed $1,643,000
Amendment authority of up to 15% ($246,450)
Total Resolution 20-01 authority: up to $1,889,450
Project P80098: Class A Disinfection Facilities
Current budget: $2,300,000
Future budget for construction contract to be determined
Resolution 20-01
2
Award of Contract to Kennedy Jenks Consultants
Sole respondent to request for proposals (RFP)
Class A treatment, storage, and conveyance design option defined
Direct appoint new contract >$250,000 allowable with written findings that doing so is:
Efficient
Cost effective
Does not diminish competition
Contracting Authority
Procurement Rules
3
Project Overview
Three key elements:
Class A disinfection after tertiary filters
Recycled water storage tank
(0.5+ million gallons)
Pump station and connections to points of use
Design Basis
?
?
?
?
?
4
Fatal Flaw Analysis: will it work?
Alternatives Analysis: what is optimal?
Pre-Design Process
Disinfection Decision
Storage Decision
Pumping Decision
5
10% Conceptual Design
Source: Jiangsu YLD Water Processing Equipment Co., Ltd.
Source: Hazen & Sawyer; hazenandsawyer.com
Source: Portalogic; portalogic.info
New open channel UV disinfection
Existing tertiary filters – optional pump resizing
New on-site card-lock truck fill station
UV disinfection
1 million gallon storage in HRCCB
Pump station in HRCCB
On-site fill station
6
Project Costs
Design Cost Proposal:
Class A Disinfection Facilities design and construction support: $1,357,500
Optional Design Tasks: $284,500
Filter improvements
Seismic upgrades
Permit assistance
Condition assessment
Inspection support
Total: 1,643,000
Construction Cost Estimate (engineer’s opinion):
Class A Disinfection Facilities: $4,990,000
Optional items: TBD
7
MWMC Budgets
Temperature Compliance Projects
$15,000,000 combined initial phases
Not shown: $17,000,000+ in future recycled water expansion
8
Thermal Load Cost Elements
Current break down of $15M Thermal Load Planning & Implementation I
Includes all costs to date and break-off project budgets
Potential future project costs:
Recycled Water Conveyance Line Upgrade - $3.5M
BRS Lagoon & Pivot Irrigation Rehab - $3.0M
Pure Water Partners future phase - unknown
9
Project Timeline
10
Resolution 20-01
11
Conceptual Layout
12
Demonstration Sites
13