At around 5pm I received a distress  call from Jeanine.  She had dropped her collection of keys (car, house, mailbox, work) into a storm drain as she was unloading food for Open Table. I arrived with a spare car key, a crude fishing wire, and surveyed the situation.  The keys were not visible and were probably submerged in the water at the bottom of the sewer some 9 feet below the grate. I returned home and fashioned a proper retrieval device from a 10 foot long 1″x1″ piece of scrap wood and three rare earth magnets affixed to the end of the stick with Gorilla tape.  I returned to the grate, happy no one had parked on top of it, and proceeded to conduct a grid search on the base of the storm drain.  My first pass was just below the surface of the water.  The second was 3″ below the water where I skimmed along the top of the sediment at the bottom of the drain.  On the third pass, at about 6″ under the water and well into the sediment layer, I felt the magnets mate with the keys.  I then gingerly lifted the keys up to the bottom of the grate and ever so slowly grabbed onto them and pulled them through.  The entire operation took 25 minutes with me seated on the ground as rush hour traffic streamed by.  I have little doubt that half of the town of Concord witnessed me fishing in the storm drain and are convinced I have gone mad.  Returning home with the lost keys, I was greeted by Jeanine with hero status. Her Facebook post on the outcome can be found at this link.