700 Timberpine Avenue - City of Sunnyvale - State of California

2010-7672 – 0 Timberpine Avenue - Toll Brothers Attachment B
Page 11 of 19
12. A Disturbance Coordinator will be assigned to the project
for the full duration of asbestos abatement, demolition
activities, grading, excavation, and building construction.
This coordinator will ensure that all air quality mitigation
measures are enforced. In addition, the Disturbance
Coordinator will respond to complaints from the public
regarding air quality issues in a timely manner. The
contact information for this Coordinator will be posted in
plain view at the project site. The Coordinator will also be
responsible for notifying adjacent properties of the
demolition schedules.
13. Opacity is an indicator of exhaust particulate emissions
from off-road diesel powered equipment. The Disturbance
Coordinator shall ensure that emissions from all
construction diesel powered equipment used on the
project site do not exceed 40 percent opacity for more
than three minutes in any one hour. Any equipment
found to exceed 40 percent opacity (or Ringelmann 2.0)
shall be repaired immediately. Any equipment emitting
dark smoke three minutes after start up is in violation of
this measure.
14. Diesel equipment standing idle for more than five minutes
shall be turned off. This would include trucks waiting to
deliver or receive soil, aggregate, or other bulk materials.
Rotating drum concrete trucks could keep their engines
running continuously as long as they were onsite.
15. The project shall develop and implement a plan,
demonstrating that the heavy-duty (> 50 horsepower) offroad
vehicles to be used in the construction project,
including owned, leased and subcontractor vehicles, will
achieve a project-wide fleet-average 20 percent NOx
reduction and 45 percent particulate reduction compared
to the most recent CARB fleet average at time of
construction. Note, the Sacramento Metropolitan Air
Quality Management District maintains a Construction
Mitigation Calculator that could be used to demonstrate
compliance with these requirements.
16. Properly tune and maintain equipment for low emissions.
17. Avoid staging construction equipment within 100 feet of
residential properties.
WHEN: These conditions shall apply during construction of the
project.
WHO: The property owner will be solely responsible for
implementation and maintenance of these conditions.
HOW: The conditions shall be incorporated into the construction
plans.