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Successful LEED Projects in the Southwest: Process and Results

www.dpsdesign.org

Julie Walleisa, AIA, LEED AP

200+ person multidisciplinary firmOffices in NM, TX, NV

7 LEED certified projects20 LEED registered projects

8 projects Designed to Earn the ENERGY STAR

D/P/S Background

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Case studies

Lessons learned

SchoolsPublic

Design‐BuildPrototype

Case studies

Lessons learned

CommercialPrivate

Partial design‐build

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Case studies

Lessons learned

UniversityLabratoryHousing

Public bid

Sandia Vista Elementary

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Separatetraffic

ShelterPlayground

Supervise

Adjust to topography

Future expansion

Efficientcirculation

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Increased insulationR‐24 walls, R‐38 roof

Efficient low‐e glazing

High‐efficiency mechanical units

Waterlessurinals

Dual‐flush toilets

Faucet restrictors

Low‐emitting materials

RecycledmaterialsAluminum, steel, insulation, gypsum board, ceiling tile, concreteCeramic tile, toilet partitions 

RegionalmaterialsCMU, concrete, asphalt, gravel, plantsGypsum board, sheathing

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Construction Recycling

IAQManagement Plan

Commissioning

Premium 

PaybackWater and energy

Hard and soft costs

OwnerArchitectContractor

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Stapleton Cordova Sandia Vista CieloAzulCost: $9.3M  $10.2M $14.1M $14.7M

Size: 73,000sf 76,000sf 85,500sf 85,500sf

Site: $150,000  $109,000  $540,000  $1,076,000

Escalation 2004 to 2007: 1.25x

Adjusted: $160.22/sf original $162.31/sf new 

1.3% premium

Savings:

Utility bills for originals 

Models/calculations for newProjected savings on electricity, gas, water

$0.87/sf/yr$73,000 per school per year

2 year payback projected

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LEED Silver certified

Construction RecyclingOver 1,000 tons of material

The amount of metalused to produce 87 cars

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The amount of concretein 2 miles of 4’ wide sidewalk

The amount of wood in 

284 telephonepoles

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The amount of 

cardboard and paperproduced by 5 trees

Indoor water conservation: actual numbers

5 year savings: 1M to 1.8M gallons

0.000

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ESES MCES CAES SVES

87,5

70 s

f 78,6

10 s

f

85,5

13 s

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f Gal

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Water & Sewer ConsumptionGal. per Sq. Ft.

7.4

9.3

5.0 4.9

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“Clone” schools?

Same designers… Same general 

contractor… Same specs… 

Different results!

CWM: 66% vs 73%

Recycled and regional:$1M more in Div 2 = lower %

Commissioning:Factory defect in dampers at CieloAzul

Lessons Learned

N

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Tracking

$0.54

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ESES MCES CAES SVES

87,5

70 s

f

78,6

10 s

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85,5

13 s

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85,5

13 s

f

Elec. ConsumptionRate per Sq. Ft.

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MCES ESES CAES SVES

481

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252196

Staff Sick Days2008 ‐ 2009 SY

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Already seeing:

Water savingsElectricity savingsReduced teacher absenteeism

Limitations:Gas usage not yet clear

1st year data is incompleteCommissioning during part of first year

Need 2‐3 years of data for it to be meaningful

Tony Hillerman Middle School

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Design‐Build

Detailed RFP

2‐stage selection

First for APS

1,200 studentsGrades 6‐8170,000sf

2 separate buildingsNW Education Corridor

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RFP required:

21% energy savings

Aircuity system4 pipe systemWater cooled chillersDDC control systemT8 (not T5) lampsDaylight sensorsOccupancy sensorsENERGY STAR appliances

Fast‐track scheduleGreen Path expedited review

LEED Silver with 6 EA points

Needed to get to 28% savings

Added Features:

Improved insulationR‐38 roofR‐24 wall

White TPOmembrane roof

30% final energy savingsglazing

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Low‐emitting materialsRecycled and regionalLinoleum flooringDaylight and viewsOperable windows

46% water savings

Recycled 89% construction waste

LEED Silver/Gold certification pending

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Lessons Learned:4‐pipe system = good acoustic control

Water‐cooled chiller boosts energy savings

Fast track process complicates commissioning review

Waiting to see impact of Aircuity system

Design‐build pros & cons:

Good team might exceed performance goals while meeting budget

Difficult to work with multiple demands: LEED goal, energy savings goal, and detailed system requirements

Jefferson Green

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• 2 separate LEED projects

• LEED-CS Gold

• LEED-CI Gold

Preserved existing trees

Passive harvesting

Xeric landscaping 

Non‐potable line

Cutoff light fixtures

Bike racks

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OrientationShading

Reflective R‐30 roof

Operable windows

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UFADEvaporative cooling

Direct/indirect

Free cooling

Refrigerated backup

Rooftop AHUs

T5 lighting

45% energy savings

875 floor diffusers

158 operable windows

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Integrateddesign of UFAD:

Reduced building height by 2’‐6”  Downsized equipment

Detailing of walls and penetrations

Diffuser, flooring, and furniture coordination

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32% recycled

67% regional

Innovation points

Standardmaterials

Aluminum 40% recycledCarpet 30% recycled 

80% construction waste recycled

Natural linoleum flooring

Xorel and Forbowall coverings

Low‐emitting

Green Guard, recycled furniture

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5% investment, 5 year paybackEUI = 34 to 36 kBtu/sf/yrUtility bills lower than previous building

ENERGY STAR rating of 99 Utility costs $0.70/sf/yr ‐ average is $2/sf/yrEnergy savings = $110,000/yr

Impact on employee recruitment, retention, productivity

2008 2009

Benefits: Environment2008 operations impact:6,290,000 kBtus energy 

858 tons CO2 emissions 598 pounds of cardboard 

18,050 pounds of paper 85 pounds of plastic 

Impact adds up across projects Impact adds up over time

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The Thornburg Campus

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Lessons learned from Jefferson GreenHighest performance in NM

47% energy savingsUFADEvap coolingAir‐cooled chiller

43% water savingsWaterless urinalsDual flush toilets

90% waste recycled

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Xeric landscaping

Gravelparking50,000g underground cisternRoof garden for employees

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Extensive daylight studies

Horizontal overhangsVertical finsDramatic effect

T5 lights

Daylight sensorsOccupancy sensors

Operable window

Notification system

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UNLV Science & Engineering

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32% energy savings

GlazingRoof insulationDaylight sensorsOccupancy sensorsEvaporative pre‐coolingWater cooled chillerZoned BMS

Fume hoods:VAVOccupancy sensors

42% water savings55% wastewater savings

Low‐flow sinksLow‐flow urinals

Water reuseReverse osmosis reject water

750 gallons/day1,500 gallon tank

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RegionalRecycledLow‐emittingDurable

Local sandstone

60% construction waste recycled

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NMHU Student Housing

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Community connectivity

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Heat Islands: Roof

51% water savingsDual flush toiletsLow‐flow showers and faucetsNo urinals

20,000 gal cisternXeric landscaping

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24% energy savings

Wood frame, R‐21 insulation

Thermally broken low‐e windows

Efficient lighting

Fan coil units – DX cooling, hot water heating coil, rooftop condensing unit

Conclusions

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Innovation points:

Education program

Green cleaning

Chemicalmanagement

Reduce impact of churn

Exemplary performance

Big lessons:

Any deliverymethod

Any building type

Specs are key

Do 10 common sense things

Stretchon 1‐2 things

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Focus on 

performance andpayback

Use incentives

0.5% to 5% premium

Track and translatesavings

Use ENERGY STAR

Share the results

www.dpsdesign.org

Thank you!

Julie Walleisa, AIA, LEED APjuliew@dpsdesign.org