Water Facilities Planning
City of Stockton. Prepared an evaluation of an elevated steel water tank that had been found to be corroded. As a part of the evaluation, a determination was made that there is lead based paint on the exterior and interior of the tank. Methods were proposed for...
Wastewater Facilities Planning
City of Point Arena. Was asked by the City to recommend Infiltration/Inflow improvements to the sewer system since the City’s percolation ponds had nearly overflowed during the preceding winter. Determined that improvements of the percolation ponds would increase the...
Other Forensic Engineering
Residential Leakage and Drainage Problems. Investigated leakage and drainage problems in approximately 200 houses. About a dozen of these cases resulted in legal action, in which Bonneau Dickson was used as an expert. Expert Witness, Failed Stormdrain Piping. Serving...
PCE (Perchlorethylene-Laundry Solvent) Contamination
Bonneau Dickson has served as an expert witness on several cases in which it was alleged that public sewer systems had allowed perchloroethylene (PCE) that was discharged by dry cleaning establishments to contaminate the groundwater. Topics of interest were design...
Standard of Care
Reviewed the Standard Of Care in the design of a wastewater system for a food processor in the Sacramento River valley. Discovered that the design engineer had not included a solids removal unit process in the aerated lagoon wastewater treatment system, thus the...
Sewage Overflows
Los Angeles Area. Sewage Backup Through a Backflow Prevention Valve (Backwater Valve). Technical expert in a case where flow from a trunk sewer flooded and severely damaged a million dollar home in Southern California. The sewage leak was caused not by a blockage of...
Other Design
Marin County. Designed an on-site mound septic system for an existing residence. Contra Costa County. Designed an on-site at-grade wastewater treatment and disposal system on a very tight site for a large new private residence.
Stormwater Facilities Design
City of Burlingame. Design of the California-Grove Stormwater Pump Station. The facilities included: a 28 CFS (18 MGD) pump station using submersible pumps; a standby generator; a storage building; drain inlets and piping; and site improvements. The construction cost...
Water Facilities Design
Castlewood Subdivision and Country Club. Worked on the design of two potable water pump stations and associated pressure piping for this development near Pleasanton, CA. Control of the system is by radio, based on tank levels. City of Salinas. Designed a water well...