Environmental drilling is used to determine the existence of contamination in soil or groundwater. Discrete undisturbed soil and groundwater samples are recovered from the subsurface in order to evaluate, monitor and remediate contamination impacting the environment.
The permit application must have the original signature of the C-57 licensed contractor. Permit applications must include access agreements or encroachment permits for all offsite work.
For Regional Water Quality Control Board (RWQCB) lead sites, the appropriate fee, a copy of a concurrence letter for the proposed work, a copy of a work plan, a site safety plan, and a plot map must be submitted. Seefee schedulefor current fees.
For environmental assessments, the appropriate fee, a copy of a work plan, a site safety plan, and a plot map must also be submitted. See fee schedule for current fees.
An Attachment 3 is an exemption from the Sonoma County Well Ordinance for wells proposed within setbacks from a sewage disposal system. If you check "Yes" on the permit application for monitoring wells being constructed within 100 ft. of a septic tank or leach field, 50 ft. of any sanitary sewer line, or 25 ft. of any private sanitary sewer line, then an Attachment 3 form must be submitted with the permit application.
It is our goal to issue permits within 2-3 weeks. However, permit issuance may take longer if all the pertinent information is not provided upon the initial submittal.
Refer to the fee schedule. Please note that the fee for the first well is a higher rate than subsequent wells. This is also the case with borings, geotechnical borings, and well destruction. See also Question #13 below regarding the need for a separate application for each drilling category.
"Step-out" borings may be constructed with verbal or written concurrence from the overseeing agency and this program. A new permit application must be submitted within 7 days of the work, and the additional boring fee will be charged. "Step-out" monitoring wells will require a new permit with the full permit fee paid.
A copy of a current workers compensation certificate endorsed to Sonoma County, and a copy of a current C-57 license must be on file with Environmental Health or be submitted with the permit application.
If the Regional Water Quality Control Board, the City of Santa Rosa, DTSC or any other regulatory agency does not direct the environmental investigation, the proposed work is classified as an Environmental Assessment.
Normally Permit Sonoma (formerly PRMD) issues these permits. If, however, the borings combine an environmental investigation, or are being proposed in an area near known contamination, Environmental Health will issue those permits.
The required method for destroying a well is over-drilling and tremie grouting. Should there be a health and safety risk to over-drilling, contact the Environmental Drilling staff. Be prepared to provide documentation as to the health and safety risk.
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