FIELD DOCUMENTS - Laserfiche WebLink

Home Browse Search

Lodi Unified School District 820 S Cluff Avenue,Lodi, California Environmental Assessment Report .y 1.0 Project Identification This scope of work has been conducted in order to determine the extent of contamination associated with a pressurized underground hydraulic oil line leak at the school bus yard located at 820 S. Cluff Avenue, in Lodi, California (Figure 1). The project involved slant soil borings and sampling in the paint booth area of the Maintenance Shop. 2.0 Site Description and History .y Located on the property is the Lodi Unified School District's Vehicle Maintenance Shop that includes a paint spray booth, wash down area, and service bays. Until recently, an above ground hydraulic oil tank and pump were located just outside the Spray Booth (Figure 2). A pipeline ran from the pump, under the Spray Booth, to the hydraulic lifts located in the Maintenance Shop. When hydraulic oil began to surface through the cracks in the concrete floor of the Spray Booth the system was disconnected and moved inside the Maintenance Shop. The extent of the release is currently unknown. 3.0 Scope of Work The environmental investigation provided for two (2) soil borings using a mobile mounted drilling rig employing the use of a hollow stem flight auger. One boring, B-1, was located outside the Spray Booth in the area of the former tank. It was drilled at a 33 degree angle under the Spray Booth and along the axis of the abandoned hydraulic pipeline to a vertical depth of 19 feet. Linear depth of this boring was 22 feet (Figure 3). Three laboratory soil samples were taken from the boring at approximately 6, 10, and 19 feet in vertical depth. All three samples were non detect for hydraulic oil. Another boring, B-2, was drilled at a 30 degree angle to a vertical depth of 10.5 feet inside the Spray Booth adjacent to the underground pipeline. The linear depth was 12 feet. Two soil samples were collected at 4 and 8 vertical feet in depth. These samples were also non detect for hydraulic oil (Appendix A).