There are 4 locals that originate out of Readville:
B710 works M-F on duty at 559am. They switch the cars brought back from Framingham and then service Home Depot (tracks are visible from the parking lot behind 575 University Ave.) @ Rte.128 Industrial Park. They sometimes service U.S.Gypsum, which is visible from Harvard St. They also service two lumber companies in Stoughton on the MBTA's Stoughton Branch. There is only one time slot to go to Stoughton and that is after train #911 goes down and returns (I think it's #912 coming back, not sure).
B732 works M-F on duty @ 1200pm. They go out the Franklin Branch to East Walpole (off the main @ Norwood Central) and service 2 customers there, CertainTeed (a.k.a. Bird Co.) and Holingsworth-Vose. Hollingsworth gets a car about once a month (they are the only tank car customer in Readville so it is obvious when they will be serviced.) Certain-Teed can be seen from Pleasant St in Norwood. You can get a shot of the Hollingsworth Siding (which is on an old wooden trestle) from Washington Street in East Walpole about 1/2 mile west of the Norwood border. B732 then goes to Walpole, picks up empties from the night Walpole local and heads south on the Framingham Secondary to Foxboro Terminal to service that industry. Foxboro Terminal is right by the Foxboro Stadium Station but it is usually dark when they get there, especially on days that they do East Walpole. They then shove back to Walpole for the trip home to Readville.
B731 works Sunday-Thursday nights on duty at 930pm and pretty much only takes empties from Readville to Framingham and returns with loads. They leave Readville between 1200am & 100am average and go west on the Franklin Branch to Walpole where they head north on the CSXT Framingham Secondary.
B733 works Sunday-Thursday nights onn duty @ 600pm. The job tends to "bat clean-up" when needed and may go wherever work needs to be done. The usual work is servicing the Freezer in Amtrak's Southampton Street Yard and Boston Globe in Dorchester. Whenever minor locomotive servicing is needed (sand,oil, toilet dump,etc) B733 takes the power to Beacon Park to be serviced. The U.S.Gypsum at Rte128 is their customer as well but that is passed-off to B710 or B731 when they have to go far away to help with other work. Presently B733 is assisting B735 by servicing the entire West Mansfield industrial park 2 or 3 nights a week.
Sorry to ramble, but yes there are locals out of Readville.