well arcaidia is near el monteyou could take metrolink to el montenote that you will have to change trains in LAor you can take adirect bus to arcarda from LAalso note that your metrolink ticket is vaild on connecting buses so yu wont hjave to pay on the bus
The closest stop to Arcadia is El Monte then Pasadena. Neither is in walking distance. I mean, El Monte is I suppose if you are willing to walk about 4-5 miles. If its a one time deal, you can do that but the El Monte area isn t exactly the safest so walk during the day. The Pasadena stop is a couple miles further but it will be straight shot walking wise. Try looking into bus routes. I m sure there is a Pasadena to Arcadia stop. Worst option, take a taxi. It ll cost you about 10 bucks. Tell him to take the 210 freeway, not streets from the Pasadena stop.
You could take the Antelope Valley Metrolink to Union Station, then take the Metro Gold Line Rail to the end of the line at Sierra Madre Villa. That s close to Arcadia. Then you could take a bus from there to your job, depending where it is.