Kanaka Valley Phase I Environmental Site Assessment Rescue, California Lake County, California
At the request of the Bureau of Land Management (BLM), Burleson performed a Phase I Environmental Site Assessment (ESA) of the 695-acre Kanaka Valley property.
Burleson assessed the target property in general conformance with the scope and limitations of American Society for Testing and Materials (ASTM) E 1527-05 and 40 CFR Part 312 to identify any recognized environmental conditions (REC) and meet the objectives of satisfying the innocent land owner defense under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). This assessment included an evaluation to the extent practicable of the past and present land uses at the target property and on adjacent properties.
The target property comprised eight adjoining parcels of undeveloped, wooded land in the vicinity of Kanaka Valley Road and Crocker Creek about 0.8 mile north-northwest of Deer Valley Road in Rescue, El Dorado County, California.
At the time of the site reconnaissance, the target property consisted primarily of rural undeveloped vacant land. The property consisted of gently sloping valleys characterized by oak woodland and grassland and surrounding steep slopes covered with thick chaparral. Burleson observed unpaved roads in Kanaka Valley and adjoining small valleys within the target property.
Burleson’s review of historic aerial photographs and topographic maps indicated that the target property has been undeveloped land since 1893. The surrounding area was a mixture of undeveloped and rural residential land since 1949. Burleson’s review of historical information did not indicate RECs to the target property.
Burleson’s review of available regulatory information did not indicate RECs to the target property. One report of offsite disposal about 1 mile southeast of the target property and three historical USTs were identified about 1.4 miles to the southeast of the target property. These three USTs were outside of the Crocker Creek and Kanaka Valley watersheds and are not expected to impact the target property.
Based on records search, interview, site reconnaissance, and other efforts related to the subject property, findings are as follows:
No RECs were identified.
A potential REC is associated with the placer mining that occurred along Crocker Creek and its tributaries within the target property. This potential REC is associated with the potential use of mercury by placer miners to recover fine gold. While not used in the same quantities as associated with large scale hydraulic mining, mercury was used by some placer miners, and may have been released in Crocker Creek incidental to the placer mining activities.
No historical RECs were identified.
Six groundwater wells associated with a former development plan for the target property are located at the target property.
Due the age of the onsite structures and placer mine workings, they are of potential historic significance.
The ultramafic and mafic rocks present at the site may contain naturally occurring asbestos.