Here’s an update on the Clearlake Sewage Spill…Water tank installation is slow, with only 31 tanks installed for residents with private wells affected by the Robin Lane sewer spill, including twoon Tuesday and four on Monday. This serves a small portion of homes in the 550-acre impact zone under a public health advisory to avoid using well water. Well testing continues, with 21 samples collected on Tuesday for a total of 462 from 151 sites; 65 wells remain sanitized. The incident management team revised the testing protocol after consulting with the hired hydrologist, who will be at the town hall tonight at 6 p.m. at Clearlake City Hall.