After big concrete-pour days on Friday and Monday, the King County Wastewater Treatment Division has just announced another one is coming up tomorrow at the Murray Combined Sewer Overflow Control Project site across from Lowman Beach. Spokesperson Doug Marsano says it’ll work the same way as those two recent days – starting around 7 am, with up to 10 trucks an hour throughout the day bringing concrete to finish the base of the under-construction million-gallon tank.