1. All Experimenters Meeting WATER UPDATE Weekend activities Start of new domestic water project Industrial Cooling Water (ICW) leaks

2. Weekend Activities ( between 10 and 11 inches of rainfall) Flood Control Surface Water Activities New Muon Lab switchgear Main Ring B-3 transformer MI-40 transformer Sanitary lift station and adjacent structures in Village Meson Detector Building roof Site 29 power outage

3. Site Ponds

4. West Weir

5. East Weir

6. Andys Pond

7. Power Line Road

9. Weekend Activities ( between 10 and 11 inches of rainfall) Flood Control Surface Water Activities New Muon Lab switchgear Main Ring B-3 transformer MI-40 transformer Sanitary lift station and adjacent structures in Village Meson Detector Building roof Site 29 power outage

10. Domestic Water Project Single DWS line vulnerability Second DWS feed to WH and footprint GPP project starts this week Method of Horizontal Directional Drilling WH east parking lot impact 9/17–10/17

11. Industrial Cooling Water Supplies fire and cooling water make-up System is in poor shape Several recent pipe and valve failures No significant operational impacts – yet –Pond water quality diminished –Increased silt levels and zebra mussel shells Plans for GPP and longer term line Item project Infrastructure must be part of future project planning