Projects of special interest

The project proposes expansion of fill and reclamation activities into Areas 5 and 6 of Reserve Silica Corporation’s properties.

Permit Posting on Public Notices

 Notice of Application 

9/5/2025

SEPA Checklist

Landscape Quantity Worksheet

Site Improvement Plan

Additional Project Information

Notice of Application

Emissions Worksheet

Technical Information Report

LUT421-0001

Hyde Mine Rezone

Proposal to rezone Parcel# 3021079080 from RA-5 to M- mining 

Notice of Application

4/28/2023

SEPA Checklist

Appendix A - Part 2 SEPA Checklist Rezone Final
Appendix A - Part 3 Land Use Form
Appendix A - Part 4 Applicant Status
Appendix A - Part 5 Fire District Receipt

Appendix B - Part 1 Air Quality Report
Appendix B - Part 2 Noise Assessment
Appendix B - Part 3 Coal Mine Hazards
Appendix B - Part 4 Coal Mine Hazards Update

Civil Plan Set

Hyde Mine Plan Set

Wetland Buffer Averaging Letter

Note: We are working to post more documents. In the meantime, please send email to Kim Laymen to request these records.

Cumberland Aggregate Mine and Asphalt Plant

Extraction and processing of aggregates and construction of an asphalt plant. The project will be developed in four phases within a 35-year span.

Contact SEPA Project Manager Fereshteh Dehkordi at 206-477-8479 or fdehkordi@kingcounty.gov

Notice of Application
2/6/2024

SEPA Checklist (913 KB)

Appendix A, Mining, Grading, & Drainage Plan Set (18,375 KB)

Appendix B, Sound Analysis (2,527 KB)

Appendix C, Air Dispersion (7,388 KB)

Appendix D, Traffic Impact (17,731 KB)

Appendix E, Environmental Technical Report – Part 1
Appendix E – Part 2 (51,039 KB)
Appendix E – Part 3 (25,604 KB)
Appendix E – Part 4 (2,102 KB)
Appendix E – Part 5 (15,165 KB)
Appendix E – Part 6 (931 KB)
Appendix E – Part 7 (8,907 KB)
Appendix E – Part 8 (646 KB KB)
Appendix E – Part 8 – Map 1 (7,143 KB)
Appendix E – Part 8 – Map 2 (7,877 KB)
Appendix E – Part 8 – Map 3 (20,826 KB)
Appendix E – Part 8 – Map 4 (120,327 KB)
Appendix E – Part 8 – Map 5 (15,127 KB)
Appendix E – Part 8 – Map 6 (31,588 KB)
Appendix E – Part 8 – Map 7 (2,967 KB)
Appendix E – Part 8 – Map 8 (38,056 KB)
Appendix E – Part 9 (9,665 KB)
Appendix E – Part 10 (293 KB)
Appendix E – Part 11 (8,159 KB)
Appendix E – Part 12 (29,889 KB)
Appendix E – Part 13 (607 KB)
Appendix E – Part 14 (12,721 KB)
Appendix E – Part 15 (2,637 KB)

Appendix F, Technical Information (22,902 KB)

Appendix G, Cultural Resources (14,190 KB)

Appendix H, Critical Areas (12,012 KB)

Appendix I, Plants & Animals (228 KB)

Appendix J, Geotech (319,264 KB)

Appendix K, Fish Habitat (28,492 KB)

Appendix L, Limited Subsurface (15,342 KB)

Community Meeting Presentation, Feb. 26, 2024 (9,227 KB)

Community Sign-in Sheet, Feb. 27, 2024 (1,346 KB)

GRDE18-0048

Queen City Farm 

Application Plan Set

Technical Information Report (TIR)

Technical Information Report (TIR) appendix 6

Phase III Tributary 316A Sizing

Phase IIIEast Pond Sizing

Phase III French Drain Sizing

Phase III Queen City Lake Outlet Sizing