2020 Walnut Industrial Park

2 Documents in Project


SCH Number
Lead Agency
Signal Hill, City of (City of Signal Hill)
Document Title
2020 Walnut Industrial Park
Document Type
MND - Mitigated Negative Declaration
Project Applicant
Xebec Realty
Present Land Use
The western parcel is GP-designated and zoned Light Industrial and the eastern is GP-designated/zoned Commercial Office.

Document Description
Located on the west and east sides of Walnut Avenue, south of Hill Street and north of Jenni Rivera Park, 20th Street, and Alamitos Avenue, the project site consists of 8.37 acres that was formerly developed as an oil refinery. All refinery improvements were removed and the southerly sloping site consists mostly of bare soil. Development of nine 1-story and 1-story-with-mezzanine concrete tilt-up buildings, for occupancy by a variety of light industrial businesses, along with a variety of site improvements, such as surface- level parking, landscaping, and miscellaneous underground water, sewer, storm drainage, electricity, and communication lines. The project would dedicate private land for expanded public street right-of-way at the southern terminus of Gundry Avenue, along Walnut Avenue, and 20th Street. Additionally, 21st Street between Walnut Avenue and Gundry Avenue would be vacated and incorporated into the project site plan. The project also includes a soil vapor extraction system to capture and remove soil vapor gas resulting from contamination by the former oil refinery that previously operated on the project site. The project is estimated to require 18-19 months for construction and it is presumed that all buildings will be fully occupied and operational by late 2021 .

Contact Information
Colleen Doan
City of Signal Hill
2175 Cherry Avenue
Signal Hill, CA 90755

Phone : (562) 989-7344


33°47'43"N 118°10'20"W
Signal Hill
Los Angeles
Cross Streets
Walnut Avenue and 21st Street
Total Acres
Parcel #
See NOC for APNs
State Highways
19, 1
Metro A Line (Blue Line)
Long Beach Airport
See NOC for schools
Los Angeles River

Notice of Completion

Review Period Start
Review Period End
Development Type
Industrial (151,075 Sq. Ft., 8.37 Acres, 234 Employees)
Local Action
General Plan Amendment Site Plan Rezone Subdivision
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Flood Plain/Flooding Geologic/Seismic Greenhouse Gas Emissions Minerals Noise Population/Housing Balance Public Services Recreation/Parks Schools/Universities Sewer Capacity Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Tribal Cultural Resources Vegetation Water Quality Water Supply Wetland/Riparian Growth Inducing Land Use Cumulative Effects Energy
Reviewing Agencies
California Air Resources Board California Department of Conservation California Department of Fish and Wildlife, South Coast Region 5 California Department of Parks and Recreation California Department of Resources Recycling and Recovery California Department of Transportation, Division of Aeronautics California Department of Water Resources California Highway Patrol California Native American Heritage Commission California Natural Resources Agency California Public Utilities Commission California Regional Water Quality Control Board, Los Angeles Region 4 California State Lands Commission Department of Toxic Substances Control Office of Historic Preservation San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy State Water Resources Control Board, Division of Water Quality California Department of Transportation, District 7


Environmental Document
  PDF 18215 K (2018-02-07) Chemoil Refinery - Fact Sheet (Final)   PDF 276 K (2018-04-13) SCP#1391-Chemoil - Soil Reuse Plan   PDF 550 K (2018-10-24) SCP#1391-Chemoil Refinery - Water Board Review of OEHHA Memo and Soil Reuse Plan   PDF 4233 K (2019-02-13) SCP#1391-Chemoil - Review of Revised Soil Reuse Plan   PDF 1196 K (2019-02-25) SCP#1391-Chemoil - Review of Air Sparge Pilot Test   PDF 1783 K _29_31_32   ZIP 82315 K 1   PDF 17009 K 12-2-19wOffRoad4hr   PDF 252 K 2   PDF 2625 K 201605_SH-PH-I-ESA_RPT   PDF 27596 K 2020WalnutIP   PDF 2317 K 3   PDF 2072 K 4Hour Annual (1)   PDF 278 K 4HOur Summer (1)   PDF 253 K 4Hour Winter (1)   PDF 253 K Ami Adini & Associates March 2016 IRAP Progress Report   PDF 10406 K Ami Adini & Associates October 2012 Interim RAP   PDF 2995 K Appendix A_Air Quality, Greenhouse Gas and Energy Calculations   PDF 1580 K Appendix B_Cultural and Paleontological Resources   PDF 2339 K Appendix C_Grading Plans   PDF 3351 K Appendix D_Geotechnical Investigations   PDF 8111 K Appendix F_Hydrology Report and LID Plan   PDF 43353 K Appendix G_Noise Modeling Worksheets   PDF 4082 K Appendix H_Traffic Impact Analysis   PDF 25429 K CalEEMod Results from 3 Alts   PDF 390 K ChemOil HASP - Final   PDF 7465 K Chemoil Refinery - Approval of Response Plan   PDF 4215 K Chemoil Response Plan FINAL   PDF 17783 K Chemoil Soil Removal Action Plan - Final 7-16-2019   PDF 3445 K City of Signal Hill-2020 Walnut Ind Park IS+MND_Feb   PDF 9044 K CON GRADE 20 (11-21-19) (003)   PDF 1462 K CON GRADE 20 EARTH DISTRIBUTION MAP   PDF 1363 K Construction worker Health + Safety Controls   PDF 156 K Former Chemoil Phase I ESA Report   PDF 120859 K GeoSyntec July 2012 Additional Offsite Environmental Investigation Report   PDF 8974 K Geotechnical Investigation Report (TGR P   PDF 8392 K Geotechnical Investigation Report, Signal Hill Business Park, 20th St   PDF 8089 K Geotechnical Work Plan (TGR P   PDF 801 K Human Health Risk Assessment, Former ChemOil Refinery, May 31, 2018   PDF 15577 K LID Plan (8-20-19)   PDF 42253 K NATURAL GROUND CUT DEPTHS UNDER FILL   PDF 499 K NOI   PDF 1263 K OEHHA HHRA Review_07-26-2018pdf   PDF 336 K OEHHA Memo January 2011   PDF 145 K Operational Emission Air Quality-GHG and Energy   PDF 413 K Soil Reuse Final_010719   PDF 431 K Soil Reuse Mod_FINAL 1-11-2019   PDF 1573 K Summary Form   PDF 1337 K Summary of Planned Remediation- 5-13-2019   PDF 9558 K Supplemental Traffic Analysis 1 - School PM (2018-08-13) (2018-05-31)   PDF 4378 K Supplemental Traffic Analysis 2 - Gaviota Cut Through (2018-08-13)   PDF 959 K Supplemental Traffic Analysis 3 - Additional Thresholds (2018-09-21)   PDF 2386 K TGR May 2017 Preliminary Geotechnical Report   PDF 9826 K The Source Group April 2018 OffSite Groundwater Monitoring Well Installation   PDF 5478 K The Source Group March 2017 Site Investigation and Site Conceptual Model Report   PDF 38487 K ToxStrategies October 2012 Second Update to Vapor Intrusion Model   PDF 1985 K
NOC   PDF 1561 K
State Comments
2020029097_Caltrans Comment   PDF 175 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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