HomeMy WebLinkAbout2019 Shine Pit Hydrogeologic Letter
1101 Fawcett Avenue, Suite 200
Tacoma, Washington 98402
253.383.4940
April 8, 2019
Miles Sand & Gravel Company
400 Valley Avenue NE
Puyallup, Washington 98372
Attention: Ryan Ransavage
Subject: Letter Report
Hydrogeologic Impacts
Shine Facility – Wahl Extraction Area
Jefferson County, Washington
File No. 1355-035-05
INTRODUCTION AND PROJECT UNDERSTANDING
Monitoring requirements at the Shine Facility were set forth by Jefferson County Department of Community
Development (DCD) as conditions of the Wahl Permit MLA03-00377, dated July 19, 2005, prepared originally
for Fred Hill Materials (FHM). The original permit has been subsequently amended by Miles Sand & Gravel
Company (Miles) by MLA02-00235 (Ordinance 08-0706-04), MLA10-00073 (Ordinance 08-1213-10), and
MLA11-00146.
As stated in Jefferson County Land Use Permit MLA11-00146, Section 2.7 SEPA Mitigative Measures, “Mining
in Group 3 [of the Wahl Extraction Area] will be delayed until water monitoring confirms continued mining will
not impact Thorndyke Creek or the Unnamed Tributary. Jefferson County requires this report to be submitted,
reviewed and approved, prior to any land disturbing activities in this area.”
It is our understanding Miles has been mining sand and gravel within the Wahl Extraction Area (WEA) is ready
to begin mining in Group 3 of the WEA. The purpose of this letter is to meet the permit requirements described.
PREVIOUS AND CURRENT MONITORING
Groundwater and surface water monitoring at the Shine Facility was initiated in August 2005 by CR
Hydrogeologic Consulting for FHM. GeoEngineers, Inc. (GeoEngineers) assumed the monitoring duties in
November 2009 when Miles commenced leasing the operations at the WEA. The monitoring locations are
shown in Figure 1.
Groundwater has been continually monitored on site since August 2005 using pressure transducers and
dataloggers as well as quarterly site visits. Established surface water monitoring points have been continually
monitored along Thorndyke Creek and the Unnamed Tributary since 2005. The monitoring locations are
downstream of the WEA. Stage height measurements are taken using an automated water-level sensor, and
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Figure 1
Shine Facility - Wahl Extraction AreaMiles Sand & Gravel CompanyShine, Washington
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Data Sources: ESRI Data & Maps, Street Maps 2005
Notes:1. The locations of all features shown are approximate.2. This drawing is for information purposes. It is intended to assist in showing features discussed in an attached document. GeoEngineers, Inc. cannot guarantee the accuracy and content of electronic files. The master file is stored by GeoEngineers, Inc. and will serve as the official record of this communication.3. It is unlawful to copy or reproduce all or any part thereof, whether for personal use or resale, without permission.
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