California Air Resources Board's website contains specific requirements for PERP registered portable engines and portable equipment units that are owned by a rental business or used in a third party rental.
Under these provisions, the rental business or the owner of a registered engine or equipment unit involved in a third party rental is required to:
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provide each person renting a registered engine or equipment unit with a written copy of the applicable requirements, including record keeping and notification requirements, as a part of the agreement and obtain a written acknowledgment by each renter that they have received such information.
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maintain the written rental or lease agreement with the registered engine or equipment unit at all times.
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maintain CARB approved records for each rental engine that include:
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engine registration number;
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dates for the start and end of the rental transaction;
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hours of operation for each rental period;
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location of use by district, county, or other indicator, i.e., street address, UTM coordinates, etc.
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maintain all records at a central location for five years.
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make all records accessible to CARB or the local air quality district upon request.
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submit an annual report to CARB by March 1st of each year in a format approved by CARB that is signed by the responsible official from the business and contains the following:
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the reporting year;
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the registration number of each registered engine and/or equipment unit;
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total hours of operation for the reporting year for each registered engine;
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a list of all counties in which the registered engine operated during the reporting year;
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an estimate of the percentage of total hours for each engine operated in each county identified in (4) above; and
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for registered equipment units, quarterly and annual summaries for each district or county in which the registered equipment unit was operated and the total process weight or throughput.
Check CARB's Portable Equipment webpage
for more information.