Emissions, Effluents and Other Impacts
Goals:
1.
2.
3.
4.
5.
6.
Minimize air emissions
Avoid ozone-depleting refrigerants
Control surface run-off and prevent sewer contamination
Reduce pollution
Integrate pest management
Properly store and control hazardous materials
1. Minimize air emissions
The main heating source will be provided by Stanford’s Central Energy Facility.
The Boiler Plant’s boilers were renovated in 1996 for low NOx operation, including low
NOx burners.1
2. Avoid ozone-depleting refrigerants
3. Control surface run-off and prevent sewer contamination
Stanford has a Storm Water Pollution Prevention plan that details requirements to
prevent sewer contamination by surface water runoff.2 Storm water will be treated onsite prior to entering the University drainage system.3 Storm water from the roof will be
captured for irrigation or other purposes in a storm water collection tank.4 So it will not
likely enter public utilities.
4. Reduce pollution
Compliant storage tanks
Control other pollutants (PCBs, asbestos, radon)
5. Integrate pest management
Stanford’s Integrated Pest Management (IPM) Program is designed and
maintained by Crane Pest Control. The program protects the Stanford University campus
against injury and disease associated with defined pest animals and occasional other
forms of animal life that inhabit the populate areas of the campus grounds. Wherever
feasible, this is accomplished by preventative measures rather than after-the-fact means.
Field work contains strong elements of inspections, physical modifications of the
environment, structural integrity, consultations with campus Safety, Grounds, Security,
Personnel and University officials; teaching and being taught as well as the more familiar
application of liquid or powdered pesticides, injecting pastes and solid baits, and setting
various electronic and mechanical traps.5
Stanford University: Utilities – Energy Services – Central Energy Facility.
http://facilities.stanford.edu/energy/cef/
2
Storm Water Pollution Prevention, Stanford University 12/05/05
3
Stanford GSB Pre-SD Civil Narrative 04/30/07
4
Outline Specifications, GSB Knight Management Center, Stanford University, pg 7
5
Stanford University Facilities Operations – Crane Pest Control.
http://facilities.stanford.edu/about_crane_paste.html
1
6. Properly store and control hazardous materials
Green Globes Checklist:
Indoor Environment
Goals:
1.
2.
3.
4.
5.
Effectively ventilate building areas
Control sources of indoor pollutants
Optimize lighting
Optimize thermal comfort
Optimize acoustic comfort
1. Effective ventilate building areas
The parking garage ventilation system will use fan rooms (one for each level) to
create a sweeping effect through the entire space by drawing the outside air from level 1
to the levels 2, 3, 4 below.6 Mixing fans will be added where the CO concentrations are
higher than the desired and accepted level (about 25-35 ppm). A remote mount sensor/
transmitters for CO with an HVAC electrochemical sensor with an appropriate CO
detection range will be installed. Exhaust ducts will come straight vertically out of the
garage depending on the fan room location.
Air in the buildings will be supplied by a standard overhead variable air volume
(VAV) system at approximately 1 cfm/sf. On Level 1 of the Faculty Office building, air
will be distributed through a pressurized under-floor air plenum. On levels 2 and 3,
north-facing perimeter spaces are naturally ventilated, supplied with ceiling fan and
operable windows. South, east, west-facing perimeter spaces allow for natural and
mechanical ventilation. Interior spaces will be mechanically ventilated using in-wall
displacement ventilation. Each office and classrooms in the GSB buildings will have
individual temperature controls. CO2 levels will be measured by sensors located within
return air ducts to ensure sufficient indoor air quality. When outside air conditions allow,
the air handling units will be set to full outside air supply by full air economizer.
2. Control sources of indoor pollutants
3. Optimize lighting
The new GSB buildings are well oriented for daylight potential, maximized on a
daily basis. The larger façade area faces South. Internal light shelves will passively aid
the penetration of daylight deeper into the occupied spaces. There will be at a minimum
one operable window and one lighting control zone per 200 sq. ft. for occupied areas
within 15 feet of perimeter wall. Offices, Seminar rooms, Group Work Rooms, Support
Areas will all have individual windows and lighting controls.
Electronic ballasts will be fitted to luminaries. The glazing will be high
performance thermally broken double pane insulated units that are spectrally selective
and contain a low-emissivity layer. Total glazing will be optimized to assure the best
ratio of light transmission to heat transmission.
4. Optimize thermal comfort
6
Stanford GSB Pre-SD Mechanical Narrative 04/30/07
5. Optimize acoustic comfort
Noise from equipment on the roof and in underground car parks will need to be
carefully considered to prevent excessive noise breaking back into the building. Roof
mounted equipment will sit on concrete housekeeping pads.7
Selection of Air Handler Units should include consideration of duct borne and
casing radiated noise. Duct connections at the inlet and outlet of an AHU should be
designed for uniform and straight airflow. Main air distribution ducts should be routed
through non-sensitive areas, such as corridors, rather than private offices or classrooms.
Where ducts must be routed through noise sensitive areas, noise breakout should be
controlled by enclosing them in a mass loaded barrier material or gypsum board. Ducts
that directly connect spaces may need to be acoustically lined to reduce crosstalk. All
VAV boxes serving areas considered as noise sensitive should be supplied with lined
plenum silencer.
Building plumbing in noise sensitive spaces should be resiliently mounted and
externally lagged with noise insulating jackets. Vibration isolation should be provided
for all rotating and reciprocating mechanical equipment, and ducts and pipes will also be
vibration isolated where necessary.
Efforts will be made to control background noise in rooms where good speech
intelligibility is required or where recording or audio conferencing systems are
implemented.
Table 1. Speech Privacy Recommendations
7
Stanford GSB Pre-SD Acoustics Narrative 05/01/07
Table 2. Room Finish Treatments
Green Globes Checklist: