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EIM data last updated on Friday, November 20, 2009

Detail: Study


User Study ID	GAP0001

Study Name	GAP- Chehalis

Study Implementation Status	COMPLETED

Study Purpose	Pilot study for a state Groundwater Assessment Program

Study Type	General Environmental Study

Study QA Planning Level	4

Study QA Assessment Level	Level 5 - Data Verified and Assessed for Usability in a Peer-Reviewed Study Report

Study Start Date	7/25/2003

Study End Date	12/30/2005

Study Responsible Entity	ECY-EAP

Study Ecology Lead/Contact	Pitz, Charles

Study Grant/Loan Number

Study Area Name	Centralia/Chehalis Aquifer

Study Area Description	Surficial aquifer between Grand Mound and Newaukum Prairie

Study Area Type	AQUIFER

Study Result Description

Study QA Project Plan Description	A two-part Quality Assurance Project Plan was developed and approved for this study.

Study Special Requirements

Study Resource Estimate

Study Lab Cost Estimate	~$67,000

Study Bibliography	Quality Assurance Project Plan: Groundwater Assessment Program Pilot Study, Phase 1 Quality Assurance Project Plan: Groundwater Assessment Program Pilot Study, Phase 2 Washington State Groundwater Assessment Program: Hydrology and Quality of Groundwater in the Centralia-Chehalis Area Surficial Aquifer Plate A. Hydrogeology, Hydrogeologic Cross Sections, and Hydraulic Conductivity Distribution Plate B. Map of Inventoried Wells Plate C. Water-Level Contours, Groundwater Flow Directions, Well Hydrographs, and Groundwater/Surface Water Interactions Plate D. Groundwater Quality Results for Select Constituents

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