CSDA is working with Kleinfelder and Metro as the acoustical engineer for the construction of all three phases of the Purple Line extension. CSDA is assisting with the construction noise and vibration analysis, reviewing the Contractor’s submittals and mitigation measures, conducting noise and vibration measurements, and preparing monthly noise compliance reports. Our scope includes:

• Review of contractor RFI’s and submittals with respect to construction noise and vibration
• Review of contractor’s noise and vibration monitoring plans and reports
• Preparation of monthly noise monitoring reports for submission to the City of Los Angeles and Beverly Hills monitoring conducted by Metro/TRC
• 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 highcapacity, 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 was retained to perform acoustical consulting services for Phase I of the 500 Kirkham Street project in Oakland. The project consisted of the new construction of three buildings containing 1,032 units with flex spaces and retail spaces at the ground floor. Our Phase I services address Building One and Two with a total of 610 units.

Our acoustical consulting services includes an environmental noise study, schematic design input, design development acoustical review, and construction documents input. In addition, Construction Administration support will be provided.


CSDA provided acoustical consulting services for various I Love Kickboxing (ILKB) fitness studios. The projects consist of tenant fit-outs within commercial and mixed-use spaces. We evaluated designs for compliance with landlord lease language, code compliance, and noise and vibration impact to nearby adjacencies.


Located in the City of Emeryville, CA, the 6701 Shellmound project consists of a mixed-use, seven-story building with residences, retail, and amenity spaces. A total of 211 residential units are planned. The project site is situated in close proximity to major freeways and an active rail line used by both freight and passenger trains.

CSDA was contracted by Urban Planning Partners to conduct an environmental noise and vibration study to quantify the existing environmental noise and vibration levels at the site. CSDA completed the study and provided a final report with mitigation recommendations to meet the acoustical criteria in accordance with the City’s General Plan Noise Element and State Building Code, as well as rail vibration criteria stipulated by the Federal Transit Administration.