LICENSE 462263
October 20, 2023
CITY OF CULVER CITY
ATTACHMENT NO. 1
2221 Rosecrans Ave
El Segundo California
Telephone: 310/392-7272
www.trammellcrow.com
RE: Extended Hours Permit – Crossings Campus (8833 National Blvd)
To Whom It May Concern:
Per Conditions of Approval Item #91, hours of construction are limited to 7:00 AM to 8:00 PM Monday through Friday, 9:00 AM through 7:00 PM Saturday, and 10:00 AM through 7:00 PM Sunday. Dirt hauling and construction material deliveries or removal are prohibited during morning (7:00 AM to 8:00 AM) and afternoon (4:00 PM to 6:00 PM) peak traffic periods.
However, in order to ensure the highest level of quality and to reduce the overall impact on the surrounding communities through a shortened construction duration and peak activities, we would like to request permission for an extended hours permit for the Crossings Campus project located at 8833 National Blvd. in Culver City.
We are committed to being a good Culver City neighbor, and we understand the sensitivity of the noise and traffic that may be generated from construction activities. The off-hours construction activities would also include soil excavation and haul truck export of the excavated material. The off-hours work would result in reducing the number of days required to excavate the site and export the soil. Therefore, we are respectfully requesting an extended hours construction permit for the following activities to mitigate the impacts and disruptions to the normal business operations taking place in Culver City:
1) Mass Excavation (85 days)
a) Start Date & Duration: A total of eighty-five extended-hour events over the course of a four- month period commencing on the third month of construction. b) Start – Stop Hours: 5:00 a.m. – 10:00 p.m.
c) Reasons: Allows for (x3) round trips vs. (x2) round trips. Extended hours will reduce the overall project by fourteen days.
d) Equipment: Excavators and haul trucks
2) Concrete Pours (Mat Foundation) – Mat Pour Site Logistics (4 days) a) Start Date & Duration: Total of four separate days over the course of a 3-week period commencing at the fifth month of construction.
b) Start – Stop Hours: 2:00 a.m. – 10:00 p.m.
c) Reasons: We are requesting extended hours in order to limit the number of pours by one per elevated deck, with a total of seven decks or seven pours. The number of pours needs to be limited for various reasons, including the following:
- Yield maximum strength of the material and prevent cracking. - Limits the impact that large volume pours (e.g., reduce the number of trucks to the site) during pour events.
- Reduced potential for concrete “spoiling” in delivery trucks while they’re attempting to reach the project site.
Extended hours will reduce the overall project by ten days. The surrounding community will benefit by seeing a reduced overall duration for peak construction activities. d) Equipment: Concrete pump and concrete trucks.
LICENSE 462263
2221 Rosecrans Ave
El Segundo California
Telephone: 310/392-7272
www.trammellcrow.com
3) Concrete Pours (Deck Pours) – Pour Days Closure (30 days) a) Start Date & Duration: Total of thirty separate days over the course of a 6-month period commencing at the sixth month of construction.
b) Start – Stop Hours: 2:00 a.m. – 10:00 p.m.
c) Reasons: We are requesting extended hours in order to limit the number of pours by one for the mat foundation. The number of pours needs to be limited for various reasons, including the following:
- Yield maximum strength of the material and prevent cracking. - Limits the impact that large volume pours (e.g., reduce the number of trucks to the site) during pour events
- Reduced potential for concrete “spoiling” in delivery trucks while they’re attempting to reach the project site.
Extended hours will reduce the number of pours for this area of the project, which reduces the duration for deck activities and, in turn, the overall project by thirty days. The surrounding community will benefit by seeing a reduced overall duration for peak construction activities. d) Equipment: Concrete pump and concrete trucks.
4) Tower Crane Erection/Dissemble – Tower Crane (6 days) a) Start Date & Duration: A total of two separate three-day events, the first of which will occur during the eighth month of construction and the second of which will occur during the twenty- second month of construction
b) Start – Stop Hours: 2:00 a.m. – 10:00 p.m.
c) Reasons: The physical requirements to erect and dismantle the tower crane will require extended work hours to safely complete this activity while avoiding prolonged exposure to the surrounding community and minimizing impacts on weekday commuter traffic. Extended hours will reduce the overall project by two days.
d) Equipment: Mobile cranes, forklifts, trucks.
As noted per the Construction Management Plan, please contact Project Superintendent, Greg Kearns at 805-886- 1699 in case of field emergencies.
Thank you for your consideration.
Sincerely,
Andrew Wallace, Vice President
Trammell Crow Company
2221 Rosecrans Avenue, Suite 200
El Segundo, CA 90245
C 213.328.8264