Removal Action Workplan (RAW) - Central Contra Costa Sanitary District Site
Summary
SCH Number
2002038547
Public Agency
Department of Toxic Substances Control
Document Title
Removal Action Workplan (RAW) - Central Contra Costa Sanitary District Site
Document Type
NOE - Notice of Exemption
Received
Posted
3/27/2002
Document Description
The project is placement of a cap over contaminated soil as presented in a Removal Action Workplan. The removal action consists of placement of a cap of at least 12 inches of clean soil over soil contaminated with refinerty wate material, to prevent direct contact with the waste material. The cap wil cover the Basin A South and Surcharge Fill Areas, and wil require importation of approximately 43,000 cubic yards of clean soil. Approximately 40 truck loads of clean soil will be transported to the site per day for about 60 working days. Long term maintenance of the cap will be performed pursuant to an Operation and Maintenance Plan approved by DTSC. The maintenance plan will provide for regular inspections to check for erosion, rodent holes, ponding of water, etc., and will include measures to address problems identified during the inspections.
Contact Information
Name
Barbara J. Cook
Agency Name
Department of Toxic Substances Control
Contact Types
Lead/Public Agency
Phone
Location
Counties
Contra Costa
Notice of Exemption
Exempt Status
Other
Type, Section or Code
class 14; sec. 15330
Reasons for Exemption
The removal action will take place entirely onsite within the fenced boudaries of a publicly owned treatment works facility. Placement and grading of the cap will be conducted by qualified personnel. Dust control measures will be conducted at the site to assure maintenance of air quality in the vicinity of the site. Clean soil will be hauled by transporters using routes approved by DTSC. Goundwater impacts are not significant and surface water will be controlled to minimize erosion. Groundwater monitoring will continue to be performed pursuant to an approved moinitoring plan. Noise will not cause a significant impact.
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