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The Los Angeles Regional Water Quality Control Board is the lead agency overseeing Shell Oil Company in the environmental investigation of the Carousel Tract. The Water Board has initiated the environmental investigation as a result of potentially significant and harmful contamination in the soils and groundwater underlying the Carousel Tract. The City does not have local regulatory authority and will assist the Water Board and other supporting state and county agencies in a thorough and rapid environmental investigation.
For information on specific properties, please contact Teklewold Ayalew, Regional Water Quality Control Board at (213) 576-6739.
Pilot Test Work Plan
The Pilot Test Work Plan, Remedial Excavation and In-Situ Treatment Pilot Testing was approved by the Regional Water Quality Control Board on November 23, 2011.
 Pilot Test Work Plan
Addendum 1 to Pilot Test Work Plan
Addendum 2 to Pilot Test Work Plan
Excavation Pilot Testing
The city of Carson Building and Safety division is currently reviewing plans to issue grading permits for the excavation pilot testing for the following six properties:
- 24533 Ravenna Avenue
- 24736 Ravenna Avenue
- 24612 Neptune Avenue
- 24715 Neptune Avenue
- 24432 and 24502 Marbella Avenue
Portions of the front or rear yards will be excavated to a depth of approximately 10 feet. Upon completion of the excavation, the holes will be filled and compacted with clean soil.
Please review the Pilot Test Work Plan for more detail information related to the upcoming activities that will be occurring in your neighborhood.
Residential Sampling Activity
As of April 20, 2012, the completed Residential Sampling Activity is as follows:
- 264 homes have been screened for methane. (93%)
- 264 homes have had soils sampled and vapor probes installed. (93%)
- 260 homes have had sub-slab soil vapor probes sampled (91%).
- 75 homes have had indoor air sampling. (26% completed)
There are a total of 285 homes within the Carousel neighborhood. For further information, please visit the following website and view the City Council reports for updates on the environmental investigation.
To review all reports and documents pertaining to the ongoing investigation, visit: http://geotracker.waterboards.ca.gov/profile_report.asp?global_id=T10000000228
*If you are represented by legal counsel, all residential sampling reports are sent directly to your counsel and made available on geotracker.
Delivery Tracking Table for Residential Reports
Indoor Air Sampling
Indoor Air Sampling Work Plan: Methods and Procedures
Instructions to Occupants re: Indoor Air Sampling, October 19, 2010
Sampling Work Table
Tables identifying remaining sampling work for each property:
As of January 20, 2012
As of April 2, 2012: Status
 Tract Vicinity Map
Tract Location Map
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Final Clean-up and Abatement Order
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On March 11, 2011, the Regional Board issued Final Cleanup and Abatement Order (CAO) No. R4-2011-0046, directing Shell Oil Company to assess, monitor, and cleanup and abate total petroleum hydrocarbons and other contaminants of concern discharged to soil and groundwater at the former Kast Property Tank Farm. |
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Final Clean-up and Abatement Order
Site Vicinity Map |
If you have any questions or would like to contact the city in regards to the investigation, please contact Sharon Song, Associate Planner at ssong@carson.ca.us or 310-952-1761. |
Carousel Tract