City of Cedar Park, TX

Water Reuse Program & Brushy Creek Sports Park IrrigationEric Rauschuber, P.E., Director of Utilities

Location• TCEQ Region 11• TWDB Region G (Brazos)

• (officially)• Region K (20%)

History• 1st PWS 1972 – Cedar Park Water Supply Corporation• City Incorporates 1973, Assumes CPWSC• Creates WW System in 1983 w/ EPA grant

• 1st 5/5/2/1 in Texas• 1st Organic phosphorus removal process in TX

• Co-owner of Brushy Creek Regional Utility Authority - 2007

• Co-owner of Brushy Creek Regional Waste Water System - 2006

Water System From 30,000’• 83,887

people• 22,000

connections• 30%

Commercial• 18,000 Ac-Ft

Firm w/ LCRA• 138 GPCD• 324 miles of

mains• 30.6 MGD

Capacity (combined)

Brushy Creek Sports Park• Opened in March 2009• 2 ~ Baseball Diamonds• 3 ~ Soccer Fields• Skate Park• Basketball Court• Brushy Creek Regional Trail

• Concept: Construct water reuse system 53 Ac-Ft / Yr (17.3 MG/Y)

Source Reuse Water• Cedar Park

Water Reclamation Facility

• “Bed and Banks” permit existed for Avery Ranch Golf

• Converted WRF to a Type II (by permit only, no CIP required)

Reuse Path – Plant to Park

DISCHARGE POINT

BED & BANKSEXTRACTION

Brushy Creek Road

Parm

er

“DA”-PARK

ERIC’S OFFICE

WRF

AVERY RANCH GOLF

Specification Team• Whitney Milberger-Laird

• Irrigation Design / Sizing / Grant / Mastermind• Non-evil Genius

• TJ Dawkins, PE• Pumping System, Backflow & Pipeline Design

• Kenneth Wheeler, PE• Permit modifications

• Eric Rauschuber, PE• Structural Design / Administrative / Signed the checks / reads the

meter

Demand Sizing &Engineering – Existing Park

Performance and Life• Design Life – 10 years with only manufacturer’s

routine M&O• Pumping Efficiencies desired • 100 ~ Year FEMA FIRM shows 25 & 100 yr special flood

hazard• (park has submerged in the past – Sept 2010)

• So, system must be sufficiently durable over life in flood plain

• Energy: 460+ volt is available – field lighting has capacity if irrigation and lights are not concurrently used

• Displace all potable irrigation with reuse (530 Ac-Ft @ yr 10)

Okay, now how much?Pros and Cons – Submersible v. FixedAgricultural v. Municipal Standard

• Fixed Structure Submersible would cost more than $300,000

• Portable Agricultural Submersible < $100,000

Selection and Specification

Details of Grant Financing / Proposal

Brushy Creek Sports Park Irrigation Improvements Project

Labor rate hourEngineering $30 20 $600.00Pump and Motor hours $21 300 $6,300.00Water Dist. hours $15 80 $1,200.00Streets hours $15 40 $600.00Parks hours $15 160 $2,400.00

Total hours 600 $11,100.00

EquipmentTrencher $36 16 $576.00Misc Small Tool @3% $2,400.00 $2,400.00

Total equipment $2,976.00

MaterialsPump and control package $48,000.00500ft 3” PVC conduit $10,000.003000ft 3/0 Copper wire $400.00600ft 1” PVC conduit $200.001200ft 12ga THHN Copper wire $200.002 Electrical Pull Boxes $600.002 Box extensions $400.001 Control Enclosure, 4 relays, bases $200.00Marking paint and supplies $100.00100 amp Breaker $800.00Electrical Supplies $500.00Water line material $500.004" flanged flow meter $2,500.00Slab and fence enclosure for controls $3,000.00

Total Material $67,400.005% contingency $4,074.00

PROJECT TOTAL $85,550.00

Funding SourcesCost Share Fund Request 42,775.00$

Customer Funding 42,775.00$ Total Project cost 85,550.00$

Total estimated program cost = $85,550.00Cost-share request1: $42,775.00 (50% minimum customer contribution of total; $61,480.00 based on $1,160 x 53 acre-feet saved annually)B2b Estimated Cost per Acre-Foot SavingsEstimated water saved per year = 53 acre-feetEstimated lifetime savings: 530 acre-feet, assuming a 10-year life cycleCost per acre-foot saved over lifetime of project2: $209LCRA cost share funding per acre-foot1: $104Customer cost share funding per acre-foot: $1051 Assumes LCRA up-front cost of $1,160 per acre-foot saved, or $150 over 10 yr lifetime of project with 50% minimum customer contribution.2 Using a discount rate of 5 percent.

Financial• Project Budget $85,550• Applied for grant with LCRA

• Grant provides matching funds• Grant Amount $42,775• City Cash (4B Community Dev.)

• $42,775• In-House Engineering & PM• In-House Construction / Install

• 2011, 53 AC-Ft = 17,270,000 gal = $8,635 / year• 10-year savings = $86,350 (– electrical, m&o)• Break-even at 5 years w/ grant or 10 years without

Grant Award• LCRA approved grant

• Equipment $2,976 • Labor $11,100 • Materials and Supplies

$71,474• Total $85,550

• 50% LCRA $42,775• 50% Cedar Park $42,775

Procurement• Because the City Portion was < $50,000, state law

required written competitive quotes from three vendors for material procurement, or product selection of cooperative purchasing agency.

• The lowest pump & control package was $48,000• In-house labor• Balance of equipment purchased from cooperatives

ProductDelivery

Signage / Notification

Next: Milburn Park, LCP, Twin Creeks, CP High

• 8,000 LF of 8” pipe under Construction

• 4,000-10,000 additional needed

• Pumping Station @ WRF• 2016-2019 target• Grant opportunity

Credits• LCRA

• City of Cedar Park Community Development Corporation, Inc. (4B)

• City of Cedar Park Employees

Questions