Glenn County Groundwater Monitoring Network-Monitoring Well Installation
Summary
SCH Number
2004058273
Public Agency
Glenn-Colusa Irrigation District (GCID)
(GCID)
Document Title
Glenn County Groundwater Monitoring Network-Monitoring Well Installation
Document Type
NOE - Notice of Exemption
Received
Posted
5/19/2004
Document Description
The proposed project will involve the drilling of three 1,000 foot deep groundwater monitoring wells. Wells will be drilled using large truck mounted rotary drilling rigs equipped with a mud pump. Drilling will occur during daylight hours only at drill locations within 200 yards of occupied dwellings. Additional support vehicles including a water tender, front-end loader, pipe truck, and pickup trucks will be parked on-site. The drilling rig and associated equipment will occupy an area of approzimately 100 feet by 100 feet. Access for these vehicles will be directly off the adjacent paved or gravel roads. No improvements to site access will be required. A pit to contain drilling wastes (approximately five foot wide by twenty foot long by four foot deep) will be constructed adjacent to the GCID drill site. All drill wastes (rock cuttings and inert bentonite clay) in the pit will be covered over and left on-site upon well completion. A small 8 foot by 10 foot prefabricated shed will be installed over the monitoring well at the GCID site to protect well measurement equipment. Well protection at the Porter and Cleek sites involves installation of 4 steel bollard posts around the concrete well head pad.
Potential site impacts include minor disturbance of the ground surface within and adjacent to the drill location and a temporary increase in noise levels during drilling and installation of the well. Once the monitoring wells are completed, monitoring of the groundwater will be conducted monthly. No impacts associated with monitoring of these wells have been identified.
All of the proposed drilling locations are previously disturbed areas (farm equipment storage yards or orchards) on private property. Field surveys for State and federally "listed" plants and animals, jurisdictional wetlands, and archaeological resources were completed at each of the proposed drill locations, with no unavoidable adverse impacts identified. The purpose of the project is to collect basic data on groundwater level fluctuations, monitor changes in groundwater quality, and conduct geologic exploration.
Contact Information
Name
Ben Pennock
Agency Name
Glenn County
Contact Types
Lead/Public Agency
Phone
Location
Counties
Glenn
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
sec 15306, 15304
Reasons for Exemption
Class 6- Basic Data collection, research, experimental management, and resource evaluation activities, which do not result in a serious or major disturbance to an environment resource.
Class 4- Minor trenching and backfilling where the surface of the land is restored and the project does not involve removal of healthy, mature, scenic trees.
Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.