DERR-2024-005969

195 North 1950 West
Mailing Address: P.O. Box 144840 Salt Lake City, UT 84114-4840
Telephone [phone] ) 359-8853 [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF ENVIRONMENTAL
RESPONSE AND REMEDIATION

Brent H. Everett
Director
ERRC-055-24

April 15, 2024

Mr. Mike Gronseth
Senior Environmental Project Manager
Kleinfelder
849 West Levoy Drive, Suite 200
Taylorsville, Utah 84123

RE: Contaminated Soil Removal Report, Bastian Ditch Shallow Flood Plain Soils
Joshua Tree Parcel, Olympia Development
Unincorporated Salt Lake County, Utah

Dear Mr. Gronseth:

The Division of Environmental Response and Remediation (DERR) received the document
entitled Contaminated Soil Removal Report, Bastian Ditch Shallow Flood Plain Soils, Joshua Tree
Parcel, dated April 10, 2024. The Joshua Tree Parcel is a 15-acre portion of the greater 900-acre
Olympia property. This report documents the metals-impacted soil removal activities and post-
removal sampling performed on the Joshua Tree Parcel.

The DERR agrees that this report adequately reports on the environmental remediation
efforts completed at the Joshua Tree Parcel, located within the greater 900-acre Olympia property.
The soil removal was conducted following the approved Shallow Soils Soil Management Plan and
Addendum No. 1 to the Final Soil Management Plan. The DERR does not require additional
sampling or removal at the 15-acre Joshua Tree Parcel and issues this letter of completion for the
work performed under the approved Soil Management Plan and Addendum No 1 to the Final Soil
Management Plan. This determination is based solely on the review of the referenced document
submitted to the DERR.

Page 2
Thank you for your submission to the DERR. If you have any questions, please contact me
at [phone].

Sincerely,

Mazie J. Cox, Project Manager
Division of Environmental Response and Remediation

MJC\lg

ecc: Doug Young, Executive Director, SOJO118, LLC
Hayley Shaffer, Salt Lake County Health Department
Ron Lund, Environmental Health Director, Salt Lake County Health Department