CA Well Driller case studies
CA Well Driller · Put your knowledge to work in context.
The California Well Driller License is a state credential for people who construct, repair, and destroy water wells in California. It is administered in the orbit of the California Department of Water Resources (DWR), whose Groundwater Management program is described as supporting "the sustainable management of California's underground water reserves." This study page is independent and is not affiliated with, endorsed by, or published by DWR. The CA Well Driller case studies are 5 cases and about 2,921 words.
1Cobble Zone and Lost Circulation in a Creek-Side Alluvial Well
A C-57 contractor is bidding a 120-ft, 6-inch PVC domestic well on a parcel 80 ft from a seasonal creek. The logged section is 0–18 ft sandy silt, 18–55 ft cobbles and gravel with a sand matrix, and 55–120 ft medium sand with thin clay lenses.
629 words, about 3 min2Annular Seal Where the First Clay Layer Is Above 50 Feet
A 5-inch PVC well for a 40-connection public water system is proposed to 80 ft in an alluvial valley. The log shows 0–10 ft sandy loam, 10–35 ft sand and gravel with the water table at 14 ft, 35–42 ft blue clay, and 42–80 ft gravel with a confined aquifer.
590 words, about 3 min3Development and Disinfection After a Turbid, Sand-Producing Completion
A new 8-inch gravel-packed well is 140 ft deep with 60 ft of stainless-steel screen from 75 to 135 ft. Static water is 50 ft.
547 words, about 3 min4Abandonment of a Flowing, Corroded Irrigation Well
A 12-inch steel-cased irrigation well was drilled in 1958 to 180 ft. It has 40 ft of slotted screen from 130 to 170 ft, a corroded casing section at 20–30 ft, and flows about 5 gpm at the surface.
578 words, about 3 min5Unlicensed Crew, Missing Report, and a Public-System Well
A C-57 licensed well contractor agrees to drill a 250-ft, 10-inch public water system well for a small mobile-home park serving 60 residents. The permit is issued to the park owner.
577 words, about 3 min