Removal Action Workplan, Myrtle Street High School Campus, Sequoia Union High School District

Summary

SCH Number
2010068228
Lead Agency
Toxic Substances Control, Department of (Department of Toxic Substances Control)
Document Title
Removal Action Workplan, Myrtle Street High School Campus, Sequoia Union High School District
Document Type
NOE - Notice of Exemption
Received

Document Description
Approval of a Removal Action Workplan (RAW) by the Department of Toxic Substances Control (DTSC) pursuant to Health & Safety Code, chapter 6.8 as submitted on May 11, 2010 by Cornerstone Earth Group. The RAW prepared in accordance with Health & Safety Code 25323.1 and 25356.1(h), focuses on excavation and removal to mitigate soils impacted with excessive levels of organochlorine pesticides (OCPs-mainly dichlorodiphenyltrichloroethane (DDT), dieldrin and chlordane) and lead onsite. The minimize human exposure to the identified chemicals of concern (COCs). The estimated volume of impacted soils is 1,600 cubic yards or approximately 200 truckloads. The cleanup levels for these COCs are 0.035 parts per million (ppm) for dieldrin, 0.43 ppm for chlordane and 80 ppm for lead based on the California Human Health Screening Level (CHHSL) for residential soil value established by the Office of Environmental Health Hazard Assessment; and, 1.0 ppm which is the Total Threshold Limit Concentration (TTLC) value for total DDT under California Code of Regulations, Title 22, section 66261.24(a)(2)(A). Project activities will commence in late June 2010 and are expected to take approximately four weeks to complete. Field work may be conducted intermittently throughout this period. Soil may be left on site for a short period of time until approval from the landfill is received, but not over 90 days.

Contact Information
Mellan Songco
Department of Toxic Substances Control
8800 Cal Center Drive
Sacramento, CA 95826-3000

916-255-6527

Location

Counties
San Mateo
Other Location Info
East Palo Alto

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15330
Reasons for Exemption
DTSC has determined that the project is a Class 30 categorical exemption project (as provided in California Code of Regulations, title 14, sections 15300.2 and 15330) and is, therefore, exempt from the provisions of California Environmental Quality Act (CEQA) and the Guidelines for the following reasons: 1. The project is a cleanup action to be taken to prevent, minimize, stabilize, mitigate, or eliminate the release or threat of release of a hazardous waste or substance. 2. The project is a removal action costing $1 million or less. 3. The project will not be located on a site which is included on any list compiled pursuant to Cal. Gov. Code 65962.5 4. The project will not have a significant effect on the environment due to unusual circumstances. 5. The project will not result in damage to scenic resources, including but not limited to, trees, historic buildings, rock outcroppings, or similar resources, within a highway officially designated as a state scenic highway. 6. The project will not cause a substantial adverse change in the significance of a historical resource. 7. The project will not require onsite use of a hazardous waste incinerator or thermal treatment unit. 8. The project will not require the relocation of residences or businesses.
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