2020 Walnut Avenue East Parcel Grading and Remediation
Summary
SCH Number
2026030007
Public Agency
City of Signal Hill
Document Title
2020 Walnut Avenue East Parcel Grading and Remediation
Document Type
NOE - Notice of Exemption
Received
Posted
3/2/2026
Document Description
Murex Environmental requested a grading plan for excavation on the East Parcels of the former Chemoil Refinery site. The proposed project (“Project”) would involve excavation and grading for remediation of petroleum contamination on the easterly parcels at 2020 Walnut Avenue.. The east parcels combine for a total of 2.55 acres and are surrounded by Walnut Avenue to the east, Alamitos Avenue to the south, and Gaviota Avenue to the west. The Los Angeles Regional Water Quality Control Board is a regulatory agency with some permitting authority over the site. Excavation quantities will depend on contaminant concentrations as defined by the Soil Management Plan (SMP). The cut, fill, and export quantities are estimated as follows:
Cut: 2,200 cubic yards
Fill: 2,220 cubic yards
Export (including swell factor 1.2) 2,640 cubic yards
Dust control measures shall be implemented and in compliance with South Coast Air Quality Management District Rule 403. Stormwater pollution prevention measures (silt fence, sandbags, drain inlet protection, etc.) shall be installed an remain for the duration of work, consistent with sheet 6 of 6 of the Grading Plan set. No physical construction is included as part of soil excavation and remediation.
Contact Information
Name
Carlos Luis
Agency Name
City of Signal HIll
Job Title
Acting Community Development Director
Contact Types
Lead/Public Agency
Phone
Location
Cities
Signal Hill
Counties
Los Angeles
Regions
Citywide
Cross Streets
Walnut Avenue and 21st Street
Zip
90755
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 4, Section 15304, Class 1, Section 15301, and Class 30 Section 15330(b)(5)
Reasons for Exemption
Class 4: The Project is exempt from CEQA due to the fact the Project consists of grading and excavation for remediation of petroleum contaminated soils on the east parcels of the former Chemoil Refinery site. The Project site is generally flat and, thus, has a slope of less than 10 percent. The Project does not involve the removal of any healthy, mature, scenic trees. All grading and excavating will be performed on privately owned land. No building construction is proposed as part of the grading and excavation. Thus, the Project is exempt under Class 4.
Class 1: The Project is exempt from CEQA due to the fact that the Project involves maintenance, permitting, and minor alteration of existing private topographical features involving negligible or no expansion of existing or former use. The remedial grading is for the sole the purpose of cleaning up the soil from past contamination. No building construction is proposed as part of the grading and excavation. There is no expansion of use proposed at the site. The activity will change the topography by removing (bad) soil, and adding (clean) fill soil. Thus, the Project is exempt under Class 1.
Class 30: The Project is exempt from CEQA due to the fact that the Project involves minor cleanup actions taken to prevent, minimize, stabilize, mitigate, or eliminate the release or threat of release of a hazardous waste or substance which are small or medium removal actions costing $1 million or less. Specifically, as explained in State CEQA Guidelines, section 15330(b)(5), the Project involves excavation and/or offsite disposal of contaminated soils in regulated units. For this reason, the Project is exempt under Class 30.
County Clerk
Los Angeles
Attachments
Notice of Exemption
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