 Easing by the weekend, nothing dramatic but noticeable. The numbers quantifying, it was a cleaner and calmer 4th of July on Tahoe beaches. Last year, about 8,000 pounds of trash at Zephyr Shoals alone. This year, less than 2,000 pounds around all of the seven beaches that 700 volunteers hit after the 4th of July celebration. Douglas County Sheriff said 10 arrests on the 4th.