TO: Honorable City Council
FROM: City Manager
SUBJECT: A Resolution of the City Council of the City of Commerce, California, Approving the Purchase of Two Rotary Air Screw Compressors Through the United States General Services Administration (GSA) Contract # 47QSHA22D0026 MEETING DATE: January 14, 2025
RECOMMENDATION:
The City Council will consider approving the purchase of two rotary air screw compressors through the United States General Services Administration (GSA) Contract #47QSHA22D0026.
BACKGROUND:
Residents living next door to the transportation facility have complained about the ongoing noise from the air compressors. The compressors operate the City's bus wash system and various equipment and maintenance tools throughout the facility. These compressors were installed when the transportation facility was built over twenty-eight years ago, in 1997, and have become increasingly noisy and obsolete in recent years.
Air compressors, particularly older models, can be quite loud. This is caused by friction between moving metal parts within the machine due to worn-out components like bearings, pistons, or values, which create irregular movements and increased noise during operation. The surrounding environment also plays a role in the perceived noise levels. For instance, the air compressors are installed on concrete surfaces and located near concrete walls, and the reverberations increase the overall noise level.
ANALYSIS:
The City’s older air compressors produce a noise decibel level of 165-175. Decibels (dB) measure sound intensity on a logarithmic scale. City staff is proposing to replace the existing compressors with rotary screw drive air compressors. The latest screw drive compressor technology operates at a decibel level ranging between 60-70. For comparison, a standard conversation typically registers around 60-70 decibels. Therefore, the proposed screw drive replacement compressors would reduce the noise level by 100 decibels, considered relatively noiseless in a commercial work environment.
City staff is confident the proposed screw drive compressors would reduce the noise level in the transportation facility considerably, which would please the residents living adjacent to transportation.
ALTERNATIVES:
Approve staff recommendation
Reject staff recommendation
Provide staff with further direction
FISCAL IMPACT:
Projected Cost
Item Quantity Cost Amount
Rotary Air Screw Compressor 2 $18,371 $36,742
Electrical Tank Drain Valve 2 $ 146 $ 292 Labor 1 $ 4,200 $ 4,200
Freight 1 $ 1,300 $ 1,300
Sales Tax 1 $ 3,796 $ 3,796
1% Contingency 1 $ 3,670 $ 3,670
Total $ 50,000
If the City Council approves the staff’s recommendation, an appropriation of $50,000 from the City’s General Fund Unallocated Fund Balance/Reserves will need to be approved.
RELATIONSHIP TO 2016 STRATEGIC GOALS:
This agenda item pertains to the strategic planning goal of "reviewing and updating services and activities to enhance efficiency." The recommendation outlined in this report is necessary for the City of Commerce Transit to reduce the noise levels within the transportation facility and surrounding community.
Recommended by: Claude McFerguson, Director of Transportation Fiscal impact reviewed by: Vilko Domic, Assistant City Manager Approved as to form by: Noel Tapia, City Attorney
Respectfully submitted: Ernie Hernandez, City Manager
Attachment: GSA Contract # 47QSHA22D0026
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CITY OF COMMERCE
AGENDA REPORT
Item No.