Poison Pond 2 Disposal Site

2 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 2 (DOT)
Document Title
Poison Pond 2 Disposal Site
Document Type
NOD - Notice of Determination
Document Description
Initial site development includes gravel road construction, guardrail replacement, and culvert installation. The ±27-acre disposal site would be accessed through construction of a one-way gravel access road located immediately north of SR 299 (see site plan, Appendix A of Initial Study). This would provide safe ingress and egress for construction vehicles, while also providing access to dump areas. Disposal activities would start at the southern portion of the project site and extend upslope as the site is filled. Upon full build-out, the anticipated fill slope would be 3:1. To maintain public safety, existing guardrail would be temporarily removed and reinstalled or replaced with new guardrail. To maintain stormwater flows, culverts would be installed under SR 299 and the one-way gravel access road. To maintain flows during active disposal activities, a ±48-inch-diameter by ±273-foot-long culvert would be installed at the base of the SR 299 fill slope, using the jack and bore method. Additionally, a ±60-inch-diameter standpipe with debris rack would be installed at the culvert inlet. The standpipe would be extended as needed to correspond to applicable fill levels (±100 feet tall at full build-out). The culvert outfall would receive an energy dissipater to minimize the potential for erosion. Further, smaller culverts would be installed along portions of the gravel access road to maintain area drainage. To maintain flows following build-out (i.e., 3:1 slope), another culvert would be installed under SR 299 near the road surface. A minor amount of pavement patching may be needed following culvert installation. Once the full build-out culvert is in operation, the standpipe/culvert would be abandoned in place and capped. Approximately 27 acres of soil would be disturbed during project implementation; maximum excavation depth would be approximately four feet. To minimize the potential for erosion, construction vehicle use would be limited to the proposed disposal site and SR 299 roadway. Further, on-site vegetation would be preserved until disposal activities warrant removal. Project construction would utilize one-way reversing traffic control as needed. Staging would occur within the Caltrans right-of-way and the proposed disposal site. The disposal site occurs on lands managed by the Bureau of Land Management (BLM). Caltrans would coordinate with BLM staff as needed to facilitate the proposed project. Project activities would be limited to Caltrans right-of-way and the project site.

Contact Information

John Luper
Agency Name
California Department of Transportation
Job Title
Associate Enviornmental Planner
Contact Types
Lead/Public Agency


Northern California
Cross Streets
SR 299 at post mile 46.2
State Highways
SR 299

Notice of Determination

Approving Agency
California Department of Transportation
Approving Agency Role
Lead Agency
Approved On


(1) The project will have a significant impact on the environment
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
(3) Mitigated measures were made a condition of the approval of the project
(4) A mitigation reporting or monitoring plan was adopted for this project
(5) A Statement of Overriding Considerations was adopted for this project
(6) Findings were made pursuant to the provisions of CEQA


Final Document(s) [Approved_Certified draft environmental documents]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, 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. For more information, please visit OPR’s Accessibility Site.

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