CSDA worked with Puchlik Design Associates, Inc. to analyze noise levels for compliance with local code requirements for a temporary chiller at Vibra Hospital in Folsom, California. This chiller was online for several months during sourcing and installation of the new permanent chiller. CSDA’s analysis included ambient noise measurements at the project site, calculation of anticipated noise levels due to temporary chiller operation, and recommendations for reduction of noise transfer to surrounding residential properties.


CSDA provided acoustical consulting services for Cushman & Wakefield of California.
The City of Rocklin requested an analysis be conducted to measure noise created by
proposed air handlers, emergency generators, and chillers to the project property
lines. This analysis was needed to verify compliance with the City’s acoustical

CSDA reviewed the current site plan and planned equipment yard. We calculated
the noise reduction provided by the CMU wall around the yard and provided a
performance related specification for the equipment to meet the City’s noise
standard. Upon completion of the study, CSDA provided the City with a report
summarizing our calculations and recommendations.


CSDA is working with Kleinfelder/Metro as the acoustical engineer for the
construction of the Purple Line extension. The scope includes:

  • Review of contractor’s RFIs and submittals with respect to construction noise control
  • Review of contractor’s noise monitoring plans and reports
  • Preparation of monthly noise monitoring reports for monitoring conducted by Metro/Kleinfelder
  • Site-specific construction noise and vibration analysis (e.g., Saban Theatre)
  • Ambient noise monitoring at sensitive receivers
  • Data analysis
  • Design of construction mitigation measures

Continuing from the current terminus of the Metro Purple Line at Wilshire/Western,
the Purple Line Extension will be completely underground and extend westward for
about nine miles along Wilshire Boulevard with seven new stations. It will provide
a high-capacity, high-speed, dependable alternative for those traveling to and from
LA’s “second downtown,” including destinations such as Miracle Mile, Beverly Hills,
Century City, and Westwood.


CSDA is working with Kleinfelder/Metro as the acoustical engineer for the
construction of the Crenshaw Line. The scope includes review of the contractor’s RFIs and
submittals with respect to construction noise control, and review of noise monitoring
plans and reports. CSDA is working alongside the contractor’s acoustical engineer in
reducing construction noise to the adjacent sensitive receivers (e.g., residences).

The Crenshaw Line/LAX Connector Transit Project is an 8.5-mile light-rail line, with
eight stations, including Leimert Park and Hindry. The rail line will run between the
Expo Line on Exposition Blvd. and the Metro Green Line. It will consist of above-ground
(La Brea Ave./La Cienega Blvd. and 405 Freeway/Century Blvd.) and tunneled
segments (Exposition Blvd. to 48th St/59th Pl to 67th St/Los Angeles International
Airport South Runways) with all remaining areas at ground level.


CSDA is conducting sound monitoring services as part of a four-year contract with
the County of Los Angeles Department of Regional Planning. The project involves
quarterly monitoring activities that occur at six off-site, public locations around the
perimeter of Universal Studios, as determined by the Los Angeles County Specific Plan.
Monitoring activities occur concurrently over 24-hour periods. As requested, CSDA
also performs additional sound monitoring studies for outdoor special events with
more than 250 attendees that include amplified sound. In addition, we document the
monitoring process through each step of execution and provide presentations and
written reports for each monitoring event.

CSDA is registered with the GAIN/GROW work program through which we are
hiring and training qualified individuals to supplement our internal staff. With our
participation in the GAIN/GROW hiring program, we have been able to provide
employment opportunities to County residents, teach them new vocational skills, and
help them to improve their future job prospects. The trained GAIN/GROW staff assist
our team with the on-site measurements and note the time and cause of any events
above the Specific Plan noise limits.