Grammar Police - I need help! My boss and I are at a disagreement as to which comma's are/are not need. (FYI he is set on have the sentence worded as is - so it can't be changed). Is this correct?On Wednesday, August 19, 2009, between 12:30 and 1:00 PM, our subcontractor, while excavating to install underground storm water system piping, hit a gas line.TIA!!!!

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