This quest is not available in game.
Kill 8 Kobold Workers, then report back to Marshal McBride.
<name>, my scouts tell me that the kobold infestation is larger than we had thought. A group of kobold workers has camped near the Echo Ridge Mine to the north.
Go to the mine and remove them. We know there are at least 8. Kill them, see if there are more, then report back to me.