What well destruction procedures are acceptable methods for Placer County requirements?

Over drilling and pressure grouting are acceptable well destruction methods in accordance with Department of Water Resources (DWR) well standards (Bulletin 74-81 and 74-90). If pressure grouting is performed, over drilling of the top 5 feet is required in most circumstances. Sparge wells constructed using a micro-porous point are not suitable for pressure grouting and are required to be over drilled.

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1. What is the cost for monitoring well installation/destruction permits?
2. When is an exploratory soil boring permit needed?
3. What is the cost for exploratory soil borings?
4. Do shallow soil vapor sampling wells (e.g. typically 5 feet deep) require a well permit?
5. What well destruction procedures are acceptable methods for Placer County requirements?