1. Water Booster Station Improvement Study
Laura Barraza, P.E.
May 31, 2017

2. Project Background
The 2015 Water Facilities Master Plan recommended a detailed evaluation for small Pressure Zones with large storage needs.
Standard criteria results in increased storage for Emergency and Fire Flows.
Potential to introduce water age and water quality issues due to minimal Operational Storage needs.
10 Pressure Zones have been identified as having the potential for water quality issues.
This Study will develop, evaluate, and compare alternatives to the recommended tank storage improvements to ensure solutions are not impacting water quality.

3. Tank Criteria Used in Master Plan
Storage Criteria is based on three components:
Operational Storage
Based on demands in the Zone
Fire Storage
Based on land use within the Zone
Emergency Storage
Based on eight hours of supply outage
For most Pressure Zones, the Standard Criteria functions as expected. However, when the Fire Storage and/or Emergency Storage volume is significantly larger than the Operational Storage needs, the tank turnover rates can be relatively low resulting in water quality issues.
Fire
Emergency
Operational

4. Study Objectives
Provide detailed evaluations/recommendations for 10 identified small Pressure Zones.
Provide other alternatives for improvements that meet water quality objectives and provide the necessary Operational, Emergency, and Fire Flow requirements within a Pressure Zone.
Integrate the results of this Study into the District’s on-going capital planning efforts.

5. Consultant Selection RFP released to five engineering firms
Received three proposals
Proposals reviewed by:
Planning
Engineering
Water Operations

6. Consultant Selection Summary
Engineering Firm
Technical Proposal Rating
Base Proposal (1)
Ranking
Black & Veatch
8.06
$ 269,348 2
Kennedy/Jenks
9.13
$ 213,492 1
RMC
7.43
$ 244,631 3
(1) Fees for base proposal only and do not include optional tasks.
Review Panel:
Brian Powell, Director of Groundwater Management & Facilities Planning
Khos Ghaderi, Director of Water Operations
Greg Kowalski, Senior Civil Engineer
Laura Barraza, Senior Civil Engineer

7. Recommendation
Approve and Authorize a Professional Services Agreement with Kennedy/Jenks Consultants to Prepare the Water Booster Station Improvement Study in the Amount of $213,492; and
Appropriation in the amount of $266,800 to fund the Project.

8. Contact Information
Laura Barraza, P.E.
Senior Civil Engineer
(951) Ext. 4228