American Canyon’s post office remains on the chopping block as the U.S. Postal Service faces a $3 billion drop in revenue.

The city’s only post office is a small modular building from the 1984 Summer Olympics in Los Angeles that was moved north and opened on Crawford Way in 2001. It’s also one of 371 facilities the U.S. Postal Service may close, a list whittled down from the 700 considered for closure as of August.

A final decision whether or not to consolidate the American Canyon branch with the Vallejo office will come “hopefully before the end of the month,” U.S. Postal Service spokesman Augustine Ruiz Jr. said. “We’re not going to rush into things.”

Ruiz explained that if Kim Fernandez, district manager for the post office regional Bay Valley district, recommends the consolidation of the American Canyon branch with Vallejo post office, a standard questionnaire will be sent to residents and businesses to find out how often people visit the station.

According to the U.S. Postal Service, the American Canyon branch’s walk-in revenues totaled about $400,000 in 2008. The U.S. Postal Service pays $1 a year to rent the space on city property behind Canyon Plaza on Crawford Way.

American Canyon City Manager Rich Ramirez said he finds it hard to understand why the U.S. Postal Service would want to close the city’s post office. “This facility is making money for the U.S. Postal Service,” said Ramirez, adding that revenue will be lost because American Canyon residents will use private mail services instead of driving to Vallejo.

The city and Napa County officials have sent letters to the U.S. Postal Service to ask that American Canyon’s post office remain open. Ramirez said he has not heard from the Postal Service.

“The Postmaster General of the United States has not returned my phone calls,” he said.

The American Canyon Chamber of Commerce is collecting signatures from business owners and residents for a petition to save the office. The city and chamber President and Chief Executive Officer Pam Wilkinson have contacted Rep. Mike Thompson, D-St. Helena.

“I will continue to work for the people of American Canyon to keep the post office open, because I know how important this post office is to our community,” Thompson said in an e-mail Wednesday. “The Postal Service has assured my office that they are only in the initial stages of the review process, and as the process moves forward I will make sure that the Postal Service understands the unique need for a post office in American Canyon.”

 Wilkinson said having no post office would be inconvenient to businesses and residents.

“We’re fighting just to keep our little trailer. It’s kind of sad,” she said, referring to the widespread local sentiment that the post office should keep an outpost in a city of 17,000 residents.

A U.S. Postal Service spokesman said customers will still have access to postal services.

Greg Frey, spokesman for the U.S. Postal Service in Washington D.C., said that in addition to the network of post offices, branches and stations, more than 56,000 other retailers at supermarkets and drug stores sell U.S Postal Service stamps and other products and services. In addition, more than 18,000 ATM machines sell stamps, he said. “And of course, postage can be printed and paid for on your personal computer at usps.com,” he said.

“We are looking at consolidating retail and delivery operations, but we are committed to easy access for our customers,” Frey said.

Correction: An earlier version of this article listed an incorrect estimated drop in revenue for the U.S. Postal Service.