How We Obtained LEED Certification

pertaining to the Indoor Environmental Quality Category

Ron Fields, CAFS, NCT General Dynamics C4 Systems

Outline

• What is LEED EB? • GD LEED Costs and savings • IEQ Prerequisites • IEQ Credits • GD Scorecard • Conclusion

4 prerequisites

10 credits

22 possible points

• GOALS: – Establish

good indoor air quality

– Eliminate, reduce and manage the sources of indoor pollutants

– Ensure thermal comfort and system controllability

– Provide for occupant connection to the outdoor environment

LEED-EB in Arizona

• 1.5 MSF manufacturing campus in Scottsdale – Roosevelt Facility earned LEED-EB certification in 2005 – Hayden Facility is currently pursuing LEED-EB certification – Certification Investment – Simple Payback in < 1

Year

Since 2004, $100K Annual Savings in Material Reuse

10,000 LBS of Cabling reuse

Indoor Environmental Quality

• 10 Total Credits • 22 Total Points • 26% of Total

Possible Points

• 4 Prerequisites w Outside Air Introduction &

Exhaust Systems w Environmental Tobacco Smoke

(ETS) Control w Asbestos Removal or

Encapsulation w PCB Removal

Intent: Establish minimum indoor air quality (IAQ) performance to enhance indoor air quality in buildings, thus contributing to the health and well-being of the occupants.

w Requirements: • Modify or maintain existing building outside-

air (OA) ventilation distribution system to supply at least the rate required by ASHRAE 62.1-2004.

• Implement and maintain an HVAC system Maintenance Program

• Test and maintain the operation of all building exhaust systems, including bathroom, shower, kitchen and parking exhaust system

Prereq.1: Outside Air Introduction & Exhaust Systems Indoor Environmental Quality

Intent: Prevent or minimize exposure of building occupants, indoor surfaces and systems to Environmental Tobacco Smoke (ETS).

w Requirements: •Prohibit smoking in the building except in designated areas •Locate any exterior smoking areas at least 25 feet from entries, operable windows or air intakes

•Locate designated smoking rooms to effectively contain, capture and remove ETS from the building. At a minimum, the smoking room must be directly exhausted to the outdoors with no re-circulation of ETS-containing air to the non-smoking area of the building, and enclosed with impermeable deck-to-deck partitions. With the doors to the smoking room closed, operate exhaust sufficient to create a negative pressure with respect to the adjacent spaces

Prereq. 2: ETS Control Indoor Environmental Quality

Intent: Reduce the potential exposure of building occupants to asbestos prevent associated harmful effects of asbestos in existing buildings.

w Requirements: •Have in place an asbestos management program •Identify the applicable regulatory requirements •Have survey records that identify where asbestos is located in the building and on the site so that the asbestos present can be addressed appropriately in the ongoing asbestos management program

Prereq. 3: Asbestos Removal or Encapsulation Indoor Environmental Quality

Intent: Provide capacity for ventilation system monitoring to help sustain long-term occupant comfort and well-being. w Requirements:

•Install permanent monitoring systems that provide feedback on ventilation system performance to ensure that ventilation systems maintain minimum ventilation rates.

•Option A •For mechanical ventilation that serve densely occupied spaces (density >/= 40 SF/Person):

•CO2 sensor or sampling location for each space, and compare with OA ambient CO2 concentrations •Test and calibrate CO2 sensors for accuracy of at least 75 PPM or 5% of reading •Monitor CO2 sensors w/ trend system (at least 30 min intervals) •Configure system to generate an alarm •Possibly use CO2 sensors for demand-controlled ventilation

Credit 1-Outdoor Air Delivery Monitoring Indoor Environmental Quality

Intent: Provide capacity for ventilation system monitoring to help sustain long-term occupant comfort and well-being.

w Requirements: •Install permanent monitoring systems that provide feedback on ventilation system performance to ensure that ventilation systems maintain minimum ventilation rates.

•Option B •For all other mechanical ventilation systems:

•Outdoor airflow measurement device must be provided capable of measuring min OA flow rate at all spaces w/in 15% of design minimum •Monitor OA flow device by control system that can trend (at least 15 minute intervals for 6 months) •Configure control system to generate an alarm

Credit 1-Outdoor Air Delivery Monitoring Indoor Environmental Quality

CONTINUED…

Co2 and Temperature trend

Intent: Prevent indoor air quality problems resulting from any construction/renovation projects in order to help sustain the comfort and well-being of construction workers and building occupants. wRequirements:

•Develop and implement an IAQ Management Plan for the construction & occupancy phases of the building:

•During construction meet or exceed the recommended Control Measures of the Sheet Metal and Air Conditioning National Contractors Association (SMACNA) IAQ Guidelines for Occupied Buildings under Construction, 1995, Chapter 3. •Protect stored on-site or installed absorptive materials from moisture damage. •If permanently installed air handlers are used during construction, filtration media with a Minimum Efficiency Reporting Value (MERV) of 8 shall be used at each return air grille, as determined by ASHRAE 52.2-1999. Replace all filtration media immediately prior to occupancy.

Credit 3-Construction IAQ Management Plan Indoor Environmental Quality

24x24x2 MERV13

MV75RP

Intent: Prevent indoor air quality problems resulting from any construction/renovation projects in order to help sustain the comfort and well-being of construction workers and building occupants. wRequirements:

•Replace all filtration media immediately prior to occupancy. •Remove contaminants that may be remaining at the end of the construction period:

•Conduct a minimum 2-week building flush-out with new filtration media with 100% OA after construction ends and prior to occupancy of the affected space. After flush-out, replace the filtration media with new media, except for filters solely processing OA. OR •After construction ends conduct a baseline IAQ testing procedure for the affected space in the building that demonstrates concentration levels of chemical air contaminants are below specified levels (see reference guide for further details).

Credit 3-Construction IAQ Management Plan Indoor Environmental Quality

CONTINUED…

Intent: Prevent indoor air quality problems resulting from any construction/renovation projects in order to help sustain the comfort and well-being of construction workers and building occupants.

Credit 3-Construction IAQ Management Plan Indoor Environmental Quality

CONTINUED…

Chemical Contaminant Max Concentration

Formaldehyde 0.25 ppm

Particulates (PM10) 20 micrograms/m2 > OA

Total VOC (TVOC) 500 micrograms/m2

4-Phenylcyclohexene (4-PCH) 3 mocrograms/m2

Carbon Monoxide (CO) 9 ppm

• IAQ construction activities 2004 • H1237 - • Area isolated with plastic and a negative air fan during demo. • Return air sealed off. Supply air reduced. • 10/12/04 Carpet, paint, Hayworth panels, ceiling tiles in place. MERV 13

filters installed in returns and outside air dampers for S-8 100% open for two weeks.

• 10/26/04 S-8 O.A. dampers released from 100% open to automatic control. • 10/28/04 removed Merv 13 filters from returns. • R3208- • Area isolated with plastic and negative air fan during demo. • Tacky mat placed at entry/exit • H1193A – • Area isolated negative air fan during demo. • Supply air reduced. Return sealed. • Tacky floor mats at entry/exit to prevent tracking dust. • H1765 – • Area isolated with plastic and a negative air fan during demo. • H1110 – H1113 – • 10/11/04 Area isolated with plastic, returns sealed. • Negative air fan operating, supply air reduced. • Tacky mats at entry/exits

HAYDEN FILTER SCHEDULE

S2-FH2 (2yr) * 08 * * * * * * * * * * Viledon T60

S3-FH3 (2yr) * 08 * * * * * * * * * * Viledon T60

S4-FH4 (2yr) * 08 * * * * * * * * * * Viledon T60

S5-FH5 (2yr) * 08 * * * * * * * * * * Viledon T60

S6-FH6 (2yr) * * * * * * * * * * 07 Viledon T60

S7-FH7 (2yr) * 08 * * * * * * * * * * Viledon T60

S8-FH8 (2yr) 08 * * * * * * * * * * * Viledon T60

S9-FH9 (2yr) 08 * * * * * * * * * * * Viledon T60

UNIT JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

Intent: Enhance IAQ performance by optimizing practices to prevent the development of indoor air quality problems in building correcting indoor air quality problems when they occur and, maintaining the well-being of the occupants.

Credit 9-Contemporary IAQ Practice Indoor Environmental Quality

wRequirements: • Develop and implement on an ongoing basis an IAQ management program for

buildings based on the EPA document “Building Air Quality: A Guide for Building Owners and Facility Managers,” EPA Reference Number 402-F-91-102, December 1991, which is available on the EPA website, www.epa.gov/iaq/largebldgs/graphics/iaq.pdf

9 Indoor Environmental Quality Possible Points: 18

Y Prereq 1 Minimum IAQ Performance

Y Prereq 2 Environmental Tobacco Smoke (ETS) Control

Y Prereq 3 Asbestos Removal or Encapsulation

1 Credit 1 Carbon Dioxide (CO2 ) Monitoring 1

1 Credit 2 Increase Ventilation Effectiveness 1

1 Credit 3 Construction IAQ Management Plan 1

1 Credit 5.1 Green Housekeeping, Entryway Systems 1

1 Credit 5.2 Green Housekeeping, Mixing Areas 1

1 Credit 5.5 Green Housekeeping, Low Env. Impact Disposable Products 1

1 Credit 5.6 Green Housekeeping, Low Env. Impact Pest Management Policy 1

1 Credit 5.7 Green Housekeeping, Outdoor Chemical Storage 1

1 Credit 9 Contemporary IAQ Practice, ASHRAE 62-1999 1

6 Indoor Environmental Quality Possible Points: 18

Y Prereq 1 Minimum IAQ Performance

Y Prereq 2 Environmental Tobacco Smoke (ETS) Control

Y Prereq 3 Asbestos Removal or Encapsulation

1 Credit 1 Carbon Dioxide (CO2 ) Monitoring 1

1 Credit 2 Increase Ventilation Effectiveness 1

1 Credit 3 Construction IAQ Management Plan 1

Credit 4 Not included 0

Credit 5.1 Green Housekeeping, Entryway Systems 1

Credit 5.2 Green Housekeeping, Mixing Areas 1

Credit 5.3 Green Housekeeping, High Volume Copying 1

Credit 5.4 Green Housekeeping, Low-Impact Cleaning and Housekeeping 1

1 Credit 5.5 Green Housekeeping, Low Env. Impact Disposable Products 1

1 Credit 5.6 Green Housekeeping, Low Env. Impact Pest Management Policy 1

1 Credit 5.7 Green Housekeeping, Outdoor Chemical Storage 1

Credit 6.1 Controllability of Systems, 45% of Occupied Areas 1

Credit 6.2 Controllability of Systems, 90% of Occupied Areas 1

Credit 7.1 Thermal Comfort, Compliance with ASHRAE 55-1992 1

Credit 7.2 Thermal Comfort, Permanent Monitoring System 1

Credit 8.1 Daylight & Views, Views for 40% of Total Building Area 1

Credit 8.2 Daylight & Views, Views for 80% of Total Building Area 1

Credit 8.3 Daylight & Views, Daylight for 65% of Total Building Area 1

1 Credit 9 Contemporary IAQ Practice, ASHRAE 62-1999 1

Conclusion • GD achieved LEED EB certification by

earning a total of 32 out of a possible 85 points.

• IAQ Management plan for construction and occupancy phases.

• Protect HVAC and adjoining areas from particulates and contaminates.

• Maintain minimum O.A. & Exhaust ventilation.

Conclusion Cont.

• Monitor/Measure/Document to ensure adequate performance.

• Maintain Mechanical Systems Utilizing CMMS.

• Maintain Asbestos Program. • Incorporate BIM (Building Information

Modeling)