‘Not your grandparents’ post office:’ The future USPS being tested in California
From the article: "...At the center of the floor is a large conveyor belt that has already boosted processing by 15 percent since it came online in September. The Chula Vista Sorting and Delivery Center, as it’s now called, is processing an average of 3,100 packages an hour or up to 18,000 a day for three ZIP codes that cover most of Chula Vista and Imperial Beach: 91910, 91911, 91932. ..."
Article Reference: www.siliconvalley.com