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To view State Water Supply Bulletins devoted specifically to groundwater topics visit the Geology and Groundwater Resources Page

195	Little Squalicum Creek Estuary Soil and Groundwater Characterization Report(s): Quality Assurance Project Plan: Little Squalicum Creek Estuary Soil and Groundwater Little Squalicum Creek Estuary – Soil and Groundwater Characterization
192	Lake Chelan Water Quality Assessment - Hydrogeologic Study Report(s): Lake Chelan Water Quality Assessment. Prepared by Harper-Owes.
191	Spokane Valley-Rathdrum Prairie Aquifer Optimized Recharge for Summer Flow Augmentation of the Columbia River Report(s): Spokane Valley-Rathdrum Prairie Aquifer Optimized Recharge for Summer Flow Augmentation of the Columbia River
188	Analyzing Pharmaceuticals and Personal Care Products in Effluent and Groundwater at Three Reclaimed Water Facilities. Report(s): Quality Assurance Project Plan: Analyzing Pharmaceuticals and Personal Care Products in Effluent and Groundwater at Three Reclaimed Water Facilities Pharmaceuticals, Personal Care Products, Hormones, and Sterols Detected in Process Water and Groundwater at Three Reclaimed Water Treatment Plants Monitoring locations and results: Environmental Information Management System (EIM)
186	Lacamas Creek TMDL Groundwater Support Report(s): Lacamas Creek Fecal Coliform, Temperature, Dissolved Oxygen, and pH Total Maximum Daily Load: Water Quality Study Design (Quality Assurance Project Plan) Surface-Water/Groundwater Interactions and Near-Stream Groundwater Quality, Lacamas Creek, Clark County Monitoring locations and results: Environmental Information Management System (EIM)
185	Puget Sound Groundwater Toxics Loading Analysis Report(s): Quality Assurance Project Plan: Puget sound Groundwater Toxics Loading Analysis, Direct Discharge Pathway Control of Toxic Chemicals in Puget Sound: Evaluation of Loading of Toxic Chemicals to Puget Sound by Direct Groundwater Discharge
184	Quality of Ground Water in Private Wells in the Lower Yakima Valley, 2001-2002 Report(s): Quality of Ground Water in Private Wells in the Lower Yakima Valley, 2001-02
180	Basic American Foods Groundwater Review Report(s): Basic American Foods Land Application Site (Moses Lake): Groundwater Review
179	Maury Island Gravel Mine Hydrogeologic Impact Assessment Report(s): Maury Island Gravel Mine Hydrogeologic Impact Assessment
178	Groundwater Monitoring, Frontier Machinery, Walla Walla, WA Report(s): Ground Water Monitoring Network, Frontier Machinery Inc., Walla Walla, Washington - WAD #081482457. Memo to Jim Malm.
177	Hytec Soil Gas Survey, Tumwater, WA Report(s): Hytec Soil Gas Survey - Tumwater, Washington - December 9-16, 1991
176	Great Western Malting Co. Soil Gas Survey, Vancouver, WA Report(s): Great Western Malting Co Soil Gas Survey Phase II, Vancouver WA - August 1993
175	Lincoln Apartments Soil Gas Survey Report(s): Lincoln Apartments Soil Gas Survey, Port Angeles, Washington -- March and April 1993
174	Transducer Data, Cascade Pole site Report(s): Transducer Data, Cascade Pole. Memo to Phil Hertzog, Cascade Pole Site Manager, September 28, 1990.
173	Chicago Milwaukee Waste Disposal Site, Othello, WA Report(s): Chemical Contaminant Levels in Ground Water, Soil and Sediments from the Chicago Milwaukee Real Estate Corporation Waste Disposal Site. Othello, Washington, July 17-18, 1989.
172	Ocean Park Nitrate in Groundwater Report(s): Elevated Nitrate in Ocean Park Drinking Water Well. Memo to Beth Rowan May 31, 1988
171	Status of the Water Supply at the Department of Wildlife's Green River Rearing Ponds, Near Kanasket, Washington Report(s): Status of the Water Supply at the Department of Wildlife's Green River Rearing Ponds, Near Kanasket, Washington
170	Assessment of Decling-Water Levels in Lake Devereaux, Mason County, WA Report(s): Assessment of Decling-Water Levels in Lake Devereaux, Mason County, WA
169	Waitsburg WWTP Groundwater Study - Evaluation of Nutrient Loading to the Touchet River, WA Report(s): Quality Assurance Project Plan: Waitsburg Wastewater Treatment Plant Groundwater Study: Evaluation of Nutrient Loading to the Touchet River City of Waitsburg Wastewater Treatment Plant Groundwater Study: Evaluation of Nutrient Loading to the Touchet River Monitoring locations and results: Environmental Information Management System (EIM)
168	Investigation of Water Resources, Water Quality, and Seawater Intrusion, Anderson Island, Pierce County, Washington Report(s): Investigation of Water Resources, Water Quality, and Seawater Intrusion, Anderson Island, Pierce County, Washington
167	Department of Ecology Eastern Washington Observation Well Network Report(s): Department of Ecology Eastern Washington Observation Well Network
166	The High Rock Aquifer Break of October 1993 Report(s): The High Rock Aquifer Break of October 1993
165	Application of The USGS Modflow Ground-Water Model to the Wenatchee River Aquifer at Leavenworth Report(s): Application of The USGS Modflow Ground-Water Model to the Wenatchee River Aquifer at Leavenworth
164	Hydrologic Effects of Ground-Water Pumping on Sinking Creek and Tributary Springs, Lincoln County, Washington Report(s): Hydrologic Effects of Ground-Water Pumping on Sinking Creek and Tributary Springs, Lincoln County, Washington
163	Lopez Island Test/Observation Well Completion Report Report(s): Lopez Island Test/Observation Well Completion Report
162	Brief Analysis of the Cause of Reduced Spring Discharge and Streamflow, Sinking Creek Area, Lincoln County Report(s): Brief Analysis of the Cause of Reduced Spring Discharge and Streamflow, Sinking Creek Area, Lincoln County
161	Reconditioning of Ten Monitoring Wells, Island County, WA - 1987 Report(s): Reconditioning of Ten Monitoring Wells, Island County, WA - 1987
160	Functionality of Monitoring Wells Located in Island County, Washington Report(s): Functionality of Monitoring Wells Located in Island County, Washington
159	Aquifer Characteristics and Seawater Intrusion of Machaye Harbor Area and Northern Lopez Island, San Juan County, Washington Report(s): Aquifer Characteristics and Seawater Intrusion of Machaye Harbor Area and Northern Lopez Island, San Juan County, Washington
158	Roza Irrigation District Ground Water Supply Study: Report for Yakima River Basin Water Enhancement Project Report(s): Roza Irrigation District Ground Water Supply Study: Report for Yakima River Basin Water Enhancement Project
157	Aquifer Test of December 30, 1985, Sea Farm of Norway Well No. 5, S32, T16N, R2W near Grand Mound, Washington Report(s): Aquifer Test of December 30, 1985, Sea Farm of Norway Well No. 5, S32, T16N, R2W near Grand Mound, Washington
156	Rettkowski Aquifer Test, Lincoln County, Washington Report(s): Rettkowski Aquifer Test, Lincoln County, Washington
155	Washington State Cooperative Observation Well Network, Department of Ecology - U.S. Geological Survey Report(s): Washington State Cooperative Observation Well Network, Department of Ecology - U.S. Geological Survey
154	Hart Observation Well, Near Connell, Washington Report(s): Hart Observation Well, Near Connell, Washington
153	Dreger Observation Well Near Creston, Washington Report(s): Dreger Observation Well Near Creston, Washington
152	Spooner Aquifer Test, Thurston County. Results and Predictions Report(s): Spooner Aquifer Test, Thurston County. Results and Predictions
151	Decreasing Streamflow and Possible Ground Water Depletion, in the Sinking Creek Watershed, Lincoln County, Washington Report(s): Decreasing Streamflow and Possible Ground Water Depletion, in the Sinking Creek Watershed, Lincoln County, Washington
150	Principal Aquifiers and Well Yields in Washington Report(s): Principal Aquifiers and Well Yields in Washington
149	Description of Schnebly Creek, Test well #16 Near, Ellensburg, Washington Report(s): Description of Schnebly Creek, Test well #16 Near, Ellensburg, Washington
148	Aquifer Test, Beach Club Condominiums, Lummi Island, Whatcom County, Washington Report(s): Aquifer Test, Beach Club Condominiums, Lummi Island, Whatcom County, Washington
147	Preliminary Groundwater Assessment of the Horse Heaven Hills Report(s): Preliminary Groundwater Assessment of the Horse Heaven Hills
146	Wilson Creek Aquifer Test Results Report(s): Wilson Creek Aquifer Test Results
145	Hydrogeology and Ground-Water Conditions in the Chumstick Drainage Basin Report(s): Hydrogeology and Ground-Water Conditions in the Chumstick Drainage Basin
144	Aquifer Test - Carpenter Well - 11N, 21E, 35F, Lower Yakima Valley Report(s): Aquifer Test - Carpenter Well - 11N, 21E, 35F, Lower Yakima Valley
143	Aquifer Test, Sandlin Well - 11N/21E-22G, Lower Yakima Valley, Results and Projections Report(s): Aquifer Test, Sandlin Well - 11N/21E-22G, Lower Yakima Valley, Results and Projections
142	Aquifer Test, Prentice Well - 11N, 21E, 17N, Results and Projections, Lower Yakima Valley Report(s): Aquifer Test, Prentice Well - 11N, 21E, 17N, Results and Projections, Lower Yakima Valley
141	Ground-Water Conditions in the Area of Swan Creek, Pierce County Report(s): Ground-Water Conditions in the Area of Swan Creek, Pierce County
140	Well-Spring Interference Problem, T18N/R20E-29, Klicktat County, Washington Report(s): Well-Spring Interference Problem, T18N/R20E-29, Klicktat County, Washington
139	Aquifer Test of Flowing Wells in the Parke Creek Area Report(s): Aquifer Test of Flowing Wells in the Parke Creek Area
138	Clallam County Test Observation Well Report(s): Clallam County Test Observation Well
137	Aquifer Test, Martin Wells, Okanogan County, Washington Report(s): Aquifer Test, Martin Wells, Okanogan County, Washington
136	Warden Aquifer Test Report(s): Warden Aquifer Test
135	Aquifer Test On Well 18/25-15E In Grant County, Washington Report(s): Aquifer Test On Well 18/25-15E In Grant County, Washington
134	Sagebrush Flats Water Level Evaluation Report(s): Sagebrush Flats
133	Estimated Drawdown of Water Levels and Degree of Hydraulic Interference Between an Existing and a Proposed Well, Moxee Valley, Yakima County, Washington Report(s): Estimated Drawdown of Water Levels and Degree of Hydraulic Interference Between an Existing and a Proposed Well, Moxee Valley, Yakima County, Washington
132	Well-Interference and Aquifer Test at Ridgefield, Washington Report(s): Well-Interference and Aquifer Test at Ridgefield, Washington
131	Aquifer Test in the Maple Valley Area Report(s): Aquifer Test in the Maple Valley Area
130	A Geohydrologic Reconnaissance of Point Roberts Area, Whatcom County, Washington Report(s): A Geohydrologic Reconnaissance of Point Roberts Area, Whatcom County, Washington
129	Aquifer Test, McDonald Creek Area, Jefferson County, Washington Report(s): Aquifer Test, McDonald Creek Area, Jefferson County, Washington
128	Winchester Wasteway Pump Test Report(s): Winchester Wasteway Pump Test
127	Olympic Mall Ground Water Investigation Report(s): Olympic Mall Ground Water Investigation
126	A Report on the Geology and Ground-Water Resources of the Arlington Heights Area in Snohomish County, Washington Report(s): A Report on the Geology and Ground-Water Resources of the Arlington Heights Area in Snohomish County, Washington
125	Aquifer Test Smugglers' Villa, Orcas Island, San Juan County, Washington Report(s): Aquifer Test Smugglers' Villa, Orcas Island, San Juan County, Washington
124	Manchester Water District #4 Aquifer Test Report(s): Manchester Water District #4 Aquifer Test
123	The Geohydrology of the Sidney-Molson Lakes Area, Okanogan County, Washington Report(s): The Geohydrology of the Sidney-Molson Lakes Area, Okanogan County, Washington
122	Geohydrologic Reconnaissance: Monse Area, Okanogan County, Washington Report(s): Geohydrologic Reconnaissance: Monse Area, Okanogan County, Washington
121	A Geohydrologic Reconnaissance of the Dead Canyon Area, Klickitat County, Washington Report(s): A Geohydrologic Reconnaissance of the Dead Canyon Area, Klickitat County, Washington
120	A Report on the Geology and Ground-Water Resources of Land Parcel No. 1-2680 owned by Charles Puckett, Snohomish County, Washington Report(s): A Report on the Geology and Ground-Water Resources of Land Parcel No. 1-2680 owned by Charles Puckett, Snohomish County, Washington
119	Geology and Ground-Water Resources of the Duck Lake Area, Okanogan County, Washington Report(s): Geology and Ground-Water Resources of the Duck Lake Area, Okanogan County, Washington
118	A Geohydrologic Reconnaissance of North Fork Green River Area, King County, Washington Report(s): A Geohydrologic Reconnaissance of North Fork Green River Area, King County, Washington
117	Geohydrologic Evaluation Aeneas Lake - Horse Springs Coulee Area, Okanogan County, Washington Report(s): Geohydrologic Evaluation Aeneas Lake - Horse Springs Coulee Area, Okanogan County, Washington
116	Preliminary Geologic Evaluation of a Proposed Nuclear Power Plant Site at Hawks Point, Pacific County, Washington Report(s): Preliminary Geologic Evaluation of a Proposed Nuclear Power Plant Site at Hawks Point, Pacific County, Washington
115	Report on the Geology And Ground-Water Resources of the Arlington Heights, Snohomish County, Washington Report(s): Report on the Geology And Ground-Water Resources of the Arlington Heights, Snohomish County, Washington
114	A Brief Description of the Ground-Water Resources of Pacific and Wahkiakum Counties, Washington Report(s): A Brief Description of the Ground-Water Resources of Pacific and Wahkiakum Counties, Washington
113	A Preliminary Report on the Geology and Ground-Water Resources of the Duck Lake Area, Okanogan County, Washington Report(s): A Preliminary Report on the Geology and Ground-Water Resources of the Duck Lake Area, Okanogan County, Washington
112	Alexander Farms Groundwater Modeling: Impact of Canal Lining and Surface Tarping on Site Groundwater Conditions Report(s): Alexander Farms Site Groundwater Modeling: Impact of Canal Lining and Surface Tarping on Site Groundwater Conditions
111	Black Rock - Moxee Valley Groundwater Study Report(s): Black Rock - Moxee Valley Groundwater Study
110	Fisher Creek/Carpenter Creek Seepage Study Report(s): Summary of Streamflow Conditions, September 2000: Fisher Creek and Carpenter Creek Basin Monitoring locations and results: Environmental Information Management System (EIM)
108	High resolution sampling at the Groundwater/Surface Water Interface Report(s): High-resolution Porewater Sampling Near the Groundwater/Surface Water Interface Quality Assurance Project Plan: High-resolution, Pore-water Sampling Near the Groundwater/Surface Water Interface Monitoring locations and results: Environmental Information Management System (EIM)
107	Burnt Bridge Creek TMDL Groundwater Support Report(s): Quality Assurance Project Plan: Burnt Bridge Creek Fecal Coliform Bacteria, Dissolved Oxygen, and Temperature Total Maximum Daily Load-Water Quality Study Design Surface Water/Groundwater Interactions and Near-Stream Groundwater Quality along Burnt Bridge Creek, Clark County Plate 1. Study well locations, in-stream piezometer thermographs, and near-stream groundwater levels. Plate 2. Radar plots for water quality samples collected from area wells, instream piezometers, and streams during the July and September 2008 synoptic surveys of Burnt Bridge Creek. Monitoring locations and results: Environmental Information Management System (EIM)
106	Duwamish - Green Watershed Initial Assessment Report(s): Duwamish - Green Watershed Initial Assessment
105	Watershed Assessment Water Resource Inventory Area 28, Salmon-Washougal Report(s): Watershed Assessment, Water Resource Inventory Area 28, Salmon-Washougal
104	Whatcom County Hydraulic Continuity Investigation, Part I and II Report(s): Whatcom County Hydraulic Continuity Investigation, Part I Whatcom County Hydraulic Continuity Investigation, Part II
103	High chloride concentrations in ground water withdrawn from above sea level aquifers, Whidbey Island, Washington Report(s): High chloride concentrations in ground water withdrawn from above sea level aquifers, Whidbey Island, Washington
101	Chehalis River TMDL, Ground Water Reconnaissance and Estimated Inflows. Memo to Paul Pickett. Report(s): Chehalis River TMDL, Ground Water Reconnaissance and Estimated Inflows. Memo to Paul Pickett.
100	Global Aqua Start Up Ground Water Monitoring Investigation, Rochester, Washington. Memo to John Bernhardt January 22, 1990. Report(s): Global Aqua Start Up Ground Water Monitoring Investigation, Rochester, Washington. Memo to John Bernhardt January 22, 1990.
99	Summary of Ecology Lagoon Ground Water Assessments. Memorandum to Phil KauzLoric.20, 1992 Report(s): Summary of Ecology Lagoon Ground Water Assessments. Memorandum to Phil KauzLoric.20, 1992
98	Ground Water Quality Assessment: Sheridan Dairy Lagoon - Adna, Washington Report(s): Ground Water Quality Assessment: Sheridan Dairy Lagoon - Adna, Washington
97	Ground Water Quality Assessment: Whatcom County Dairy Lagoon #2 - Lynden, Washington Report(s): Ground Water Quality Assessment: Whatcom County Dairy Lagoon #2 - Lynden, Washington
96	Rochester Ground Water Quality Investigation Report(s): Rochester Ground Water Quality Investigation Monitoring locations and results: Environmental Information Management System (EIM)
95	Washington State Agricultural Chemicals Pilot Study - Area 2 Report(s): Washington State Agricultural Chemicals Pilot Study - Final Report Monitoring locations and results: Environmental Information Management System (EIM)
94	Washington State Agricultural Chemicals Pilot Study - Area 1 Report(s): Washington State Agricultural Chemicals Pilot Study - Final Report Monitoring locations and results: Environmental Information Management System (EIM)
93	National Frozen Foods/Midway Meats Land Application Groundwater Study Report(s): Results of Ground Water Sampling at National Frozen Foods/Midway Meats, Centralia, WA, October 1991
92	Palouse River TMDL Groundwater Support Report(s): Quality Assurance Project Plan: Palouse River Temperature Total Maximum Daily Load Study Quality Assurance Project Plan: Palouse River Dissolved Oxygen and pH Total Maximum Daily Load Study-Water Quality Study Design Surface-water/Groundwater Interactions and Near-stream Groundwater Quality along the Palouse River, South Fork Palouse River, and Paradise Creek Quality Assurance Project Plan: South Fork Palouse River Temperature Total Maximum Daily Load Study Monitoring locations and results: Environmental Information Management System (EIM)
91	Study of Soil Fumigants (EDB and 1,2-DCP) in the Groundwater of the Bertrand Creek and Meadowdale Areas, Whatcom County, WA Report(s): Quality Assurance Project Plan: Bertrand Creek and Meadowdale Areas (Whatcom County) Follow-Up Study of EDB and 1,2-DCP in Residential Wells. EDB and 1,2-DCP in Domestic Groundwater Supplies, Follow-Up Investigation: Bertrand Creek Area (Whatcom County) North Whatcom Groundwater Update Monitoring locations and results: Environmental Information Management System (EIM)
90	Long Beach Peninsula Ground Water Study Report(s): Summary Report - Long Beach Peninsula Ground Water Study
89	An Evaluation of a Piezometer-based Constant Head Injection Test (CHIT) for use in Groundwater/Surface Water Interaction Studies Report(s): An Evaluation of a Piezometer-Based Constant Head Injection Test (CHIT) for use in Groundwater/Surface Water Interaction Studies
87	Occurrence of Methyl Tertiary-Butyl Ether (MTBE) in Groundwater at Leaking Underground Storage Tank Sites in Washington Report(s): Occurrence of Methyl Tertiary-Butyl Ether (MTBE) in Groundwater at Leaking Underground Storage Tank Sites in Washington
86	Spokane River Temperature Profile, Barker Road to Plantes Ferry Park, September 2005 Report(s): Spokane River Temperature Profile, Barker Road to Plantes Ferry Park, September 2005
85	Naches River Temperature TMDL Groundwater Support Report(s): Groundwater-Surface Water Interactions along the Naches and Tieton Rivers, Summer and Fall 2004 Quality Assurance Project Plan: Naches River Temperature Total Maximum Daily Load Monitoring locations and results: Environmental Information Management System (EIM)
84	Assessment of Ambient Groundwater Quality Conditions in the Surficial Unconsolidated Sedimentary Aquifer of the Moxee Valley, Yakima County, Washington Report(s): Ambient Groundwater Quality in the Moxee Valley Surficial Aquifer, Yakima County, January-June 2006 Quality Assurance Project Plan: Assessment of Ambient Groundwater Quality Conditions in the Surficial Unconsolidated Sedimentary Aquifer of the Moxee Valley, Yakima County, Washington Monitoring locations and results: Environmental Information Management System (EIM)
83	Groundwater Technical Support - East Fork Lewis River Temperature and Fecal Coliform Bacteria Total Maximum Daily Load Study Report(s): Surface Water/Groundwater Exchange Along the East Fork Lewis River (Clark County), 2005 Quality Assurance Project Plan: East Fork Lewis River Temperature and Fecal Coliform Bacteria Total Maximum Daily Load Study Monitoring locations and results: Environmental Information Management System (EIM)
81	Saginaw Mill Groundwater Monitoring Report(s): Saginaw Mill (Aberdeen) Groundwater Monitoring Results, April and August 2006 Quality Assurance Project Plan: Saginaw Mill Groundwater Monitoring Monitoring locations and results: Environmental Information Management System (EIM)
80	Montesano Groundwater Investigations Report(s): Montesano Groundwater Investigation of Leaking Underground Storage Tanks, October 2004 and March 2005 Addendum to the Quality Assurance Project Plan: Montesano Groundwater Investigation of Leaking Underground Storage Tank Sites Montesano Groundwater Investigation of Leaking Underground Storage Tanks, October 2005 and March 2006 Montesano Groundwater Investigation of Leaking Underground Storage Tanks: September 2008 and April 2009 Montesano Groundwater Investigation of Leaking Underground Storage Tanks, October 2007 and April 2008 Montesano Groundwater Investigation of Leaking Underground Storage Tanks, October 2006 and March 2007 Quality Assurance Project Plan: Montesano Groundwater Investigation of Leaking Underground Storage Tank Sites Monitoring locations and results: Environmental Information Management System (EIM)
79	Comparison of Hydraulic Conductivity Data in the Sequim-Dungeness Area Report(s): A Comparison of Horizontal Hydraulic Conductivity Values Derived from Aquifer Test and Well Specific-Capacity Data for the Sequim-Dungeness Area
78	Groundwater Contributions to Siebert Creek (Clallam County) During Summer of 2003 Report(s): Groundwater Contributions to Siebert Creek (Clallam County) During Summer of 2003
77	Screening for Pharmaceuticals in Wastewater Treatment Plant Effluents, Groundwater, and Surface Water in the Sequim-Dungeness Area Report(s): Quality Assurance Project Plan: Screening for Pharmaceuticals in Wastewater Treatment Plant Effluents, Groundwater, and Surface Water in the Sequim-Dungeness Area Results of a Screening Analysis for Pharmaceuticals in Wastewater Treatment Plant Effluents, Wells, and Creeks in the Sequim-Dungeness Area Monitoring locations and results: Environmental Information Management System (EIM)
76	Deschutes River TMDL Groundwater Support Report(s): Assessment of Surface Water / Groundwater Interactions and Associated Nutrient Fluxes in the Deschutes River and Percival Creek Watersheds, Thurston County Plate 1 for the report: Assessment of Surface Water / Groundwater Interactions and Associated Nutrient Fluxes in the Deschutes River and Percival Creek Watersheds, Thurston County Plate 2 for the report: Assessment of Surface Water / Groundwater Interactions and Associated Nutrient Fluxes in the Deschutes River and Percival Creek Watersheds, Thurston County Plate 3 for the report: Assessment of Surface Water / Groundwater Interactions and Associated Nutrient Fluxes in the Deschutes River and Percival Creek Watersheds, Thurston County Quality Assurance Project Plan: Deschutes River, Capitol Lake, and Budd Inlet Temperature, Fecal Coliform Bacteria, Dissolved Oxygen, pH, and Fine Sediment Total Maximum Daily Load Study Monitoring locations and results: Environmental Information Management System (EIM)
75	Strategic Recommendations for Groundwater Assessment Efforts of the Environmental Assessment Program Report(s): Washington State Groundwater Assessment Program: Hydrology and Quality of Groundwater in the Centralia-Chehalis Area Surficial Aquifer Report to Management: Groundwater Assessment Program Pilot Study Strategic Recommendations for Groundwater Assessment Efforts of the Environmental Assessment Program
74	Upper Sammamish River Surface Water-Groundwater Interaction Study Report(s): Quality Assurance Project Plan: Groundwater/Surface Water Interactions In the Sammamish River: a Preliminary Analysis Groundwater/Surface Water Interactions in the Upper Sammamish River: A Preliminary Analysis Monitoring locations and results: Environmental Information Management System (EIM)
73	Aquifer Vulnerability in the Columbia Basin Irrigation Project Area Report(s): Aquifer Vulnerability Analysis Using the Pesticide Root-Zone Model (PRZM2) -- Columbia Basin Irrigation Project Area
72	Nooksak Aquifer Vulnerability Pilot Study Report(s): Aquifer Vulnerability Project - Nooksak Pilot Study Report
70	Groundwater Assessment Program Pilot Project Report(s): 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 Report to Management: Groundwater Assessment Program Pilot Study Groundwater Assessment Program Phase 1 Quality Assurance Project Plan Groundwater Assessment Program Phase 2 Quality Assurance Project Plan Frequently asked questions about Washington State Department of Ecology’s Centralia-Chehalis Area Groundwater Study Monitoring locations and results: Environmental Information Management System (EIM)
69	Ambient Groundwater Monitoring – West Valley Area, Yakima County Report(s): Quality Assurance Project Plan: Ambient Ground-Water Monitoring in the West Valley area, Yakima County, Washington Groundwater Quality in the Central Ahtanum Valley, Yakima County, March 2001 - December 2002 Monitoring locations and results: Environmental Information Management System (EIM)
68	Ambient Groundwater Monitoring - Agnew/Carlsborg Area, Clallam County Report(s): Quality Assurance Project Plan: Ambient Groundwater Monitoring in the Dungeness Watershed, Clallam County, Washington Groundwater Quality in the Agnew and Carlsborg Area, Clallam County, December 2000 to September 2002 Monitoring locations and results: Environmental Information Management System (EIM)
66	Palermo Sub-drain System Monitoring Report(s): Palermo Wellfield Superfund Site Subdrain System and Treatment Lagoon, Status Report, September 2005 and June 2006 Palermo Wellfield Superfund Site: Subdrain System and Treatment Lagoon, Status Results, October 2007 and June and November 2008 Palermo Wellfield Superfund Site Subdrain System and Treatment Lagoon, Status Report, November 2006 and June 2007 Quality Assurance Project Plan: Addendum to the Operation and Maintenance Manual of the Treatment Lagoon, Palermo Wellfield Superfund Site Palermo Wellfield Superfund Site Subdrain System and Treatment Lagoon Status Report, December 2002 and May 2003 Palermo Wellfield Superfund Site Subdrain System and Treatment Lagoon, Status Report, October 2003 and May 2004 Palermo Wellfield Superfund Site Subdrain System and Treatment Lagoon, Status Report, September 2004 and June 2005 Monitoring locations and results: Environmental Information Management System (EIM)
63	Walla Walla Temperature TMDL Groundwater Support Report(s): Quality Assurance Project Plan: Walla Walla River Tributaries Temperature - Total Maximum Daily Load Assessment of Surface Water and Groundwater Interchange in the Walla Walla River Watershed Monitoring locations and results: Environmental Information Management System (EIM)
62	Lake Whatcom TMDL Groundwater Support Report(s): Quality Assurance Project Plan : Characterization of Groundwater Discharge to Lake Whatcom Lake Whatcom Total Maximum Daily Load Groundwater Study Monitoring locations and results: Environmental Information Management System (EIM)
61	Moses Lake TMDL Groundwater Study Report(s): Quality Assurance Project Plan: Characterization of the Groundwater Discharge to Moses Lake, Washington Moses Lake Total Maximum Daily Load Groundwater Study Monitoring locations and results: Environmental Information Management System (EIM)
60	Henderson Nisqually TMDL Groundwater Support Report(s): Henderson Inlet Watershed Fecal Coliform Bacteria, Dissolved Oxygen, pH, and Temperature Total Maximum Daily Load Study Quality Assurance Project Plan: Henderson and Nisqually TMDL Study Appendices: Nisqually River Basin Fecal Coliform Bacteria and Dissolved Oxygen Total Maximum Daily Load Study Monitoring locations and results: Environmental Information Management System (EIM)
59	Wenatchee TMDL Groundwater Support Report(s): Quality Assurance Project Plan: Wenatchee River Temperature, Dissolved Oxygen, and pH Total Maximum Daily Load Year 1 Technical Study Groundwater Data Summary for the Wenatchee River Watershed Total Maximum Daily Load Study Monitoring locations and results: Environmental Information Management System (EIM)
54	Gleed Agricultural Chemicals Ground Water Quality Assessment Report(s): Gleed Agricultural Chemicals Ground Water Quality Assessment Monitoring locations and results: Environmental Information Management System (EIM)
53	Quincy Agricultural Chemicals Ground Water Assessment Report(s): Quincy Agricultural Chemicals Ground Water Assessment Monitoring locations and results: Environmental Information Management System (EIM)
52	Pesticide Residues in the East Chehalis Surficial Aquifer/Pesticides in Ground Water-Report No. 5 Report(s): Pesticide Residues in the East Chehalis Surficial Aquifer/Pesticides in Ground Water-Report No. 5 Monitoring locations and results: Environmental Information Management System (EIM)
51	Pesticide Residues in the Woodland Surficial Aquifer, Pesticide Report #6 Report(s): Pesticide Residues in the Woodland Surficial Aquifer, Pesticide Report #6 Monitoring locations and results: Environmental Information Management System (EIM)
50	Pesticide Residues in the Walla Walla Surficial Aquifer - Pesticides in Ground Water Report #7 Report(s): Pesticide Residues in the Walla Walla Surficial Aquifer - Pesticides in Ground Water Report #7 Monitoring locations and results: Environmental Information Management System (EIM)
49	Pesticide Residues in the Moxee and Ahtanum Surficial Aquifers Report(s): Pesticide Residues in the Moxee and Ahtanum Surficial Aquifers Monitoring locations and results: Environmental Information Management System (EIM)
48	Pesticide Residues in the Skagit Delta Surficial Aquifer - Washington State Pesticide Monitoring Program Report(s): Pesticide Residues in the Skagit Delta Surficial Aquifer - Washington State Pesticide Monitoring Program Monitoring locations and results: Environmental Information Management System (EIM)
47	Pesticide Residues in the Kittitas Valley Surficial Aquifer Report(s): Pesticide Residues in the Kittitas Valley Surficial Aquifer Monitoring locations and results: Environmental Information Management System (EIM)
46	Assessment of Ground Water and Surface Water Contamination at the Washington State University Chemical Dump Site-Pullman, Washington, March 13-15, 1990 Report(s): Assessment of Ground Water and Surface Water Contamination at the Washington State University Chemical Dump Site-Pullman, Washington, March 13-15, 1990
45	Memorandum on Soil Gas Sampling at Great Western Malting Company, Vancouver, Washington - September 1992 Report(s): Memorandum on Soil Gas Sampling at Great Western Malting Company, Vancouver, Washington - September 1992
44	Water-Level Monitoring, Bellingham Frozen Foods, September 14 through December 9, 1993, Bellingham, Washington Report(s): Water-Level Monitoring, Bellingham Frozen Foods, September 14 through December 9, 1993, Bellingham, Washington
42	Vadose Zone Monitoring at Tree Top Land Application Site in Selah, WA, June-Dec. 1992 Report(s): Vadose Zone Monitoring at Tree Top Land Application Site in Selah, WA, June-Dec. 1992 Monitoring locations and results: Environmental Information Management System (EIM)
41	Republic Soil Gas Survey, Republic WA Report(s): Republic Soil Gas Survey, Republic WA
40	Effects of Leakage from Four Dairy Waste Storage Ponds on Ground Water Quality Report(s): Ground Water Quality Assessment: Hornby Dairy Lagoon, Sunnyside, WA
39	Estimates of Ground-Water Contaminant Loading to the Colville River in the Vicinity of L-Bar Products Report(s): Estimates of Ground-Water Contaminant Loading to the Colville River in the Vicinity of L-Bar Products
38	Endicott School Soil Gas Survey Endicott Washington, August 1993 Report(s): Endicott School Soil Gas Survey Endicott Washington, August 1993
37	Loon Lake Class II Inspection, Groundwater Permit No. ST 8019 Report(s): Loon Lake Class II Inspection, Groundwater Permit No. ST 8019
36	Quilcene Soil Gas Survey - Quilcene, Washington May 1994 Report(s): Quilcene Soil Gas Survey - Quilcene, Washington May 1994
35	Evaluation of the Potential for Ground Water Contamination at Sunland Land Application Site Report(s): Evaluation of the Potential for Ground Water Contamination at Sunland Land Application Site
34	Assessments for Ground Water Contamination Potential: Fort Flagler Report(s): Assessments for Ground Water Contamination Potential: Fort Flagler and Sequim Bay State Park
33	Washington State Agricultural Chemicals Pilot Study - Area 3 Report(s): Washington State Agricultural Chemicals Pilot Study - Final Report Monitoring locations and results: Environmental Information Management System (EIM)
32	A Report on Nitrate Contamination of Ground Water in the mid-Columbia Basin Report(s): A Report on Nitrate Contamination of Ground Water in the mid-Columbia Basin
31	Argonne Road Ground Water Characterization of Organic Solvents November 1995 & May 1996 Report(s): Argonne Road Ground Water Characterization of Organic Solvents November 1995 & May 1996 Monitoring locations and results: Environmental Information Management System (EIM)
30	Ground Water Quality Characterization and Nitrate Investigation of the Glade Creek Watershed Report(s): Ground Water Quality Characterization and Nitrate Investigation of the Glade Creek Watershed Monitoring locations and results: Environmental Information Management System (EIM)
29	Toftdahl Drum Site Ground Water Monitoring Report(s): Toftdahl Drum Site Monitoring, Round 1. Memo to Mike Gallagher, April 27, 1990 Toftdahl Drum Site Routine Monitoring Round II (April 1990). Memo to Mike Wilson, Oct. 22, 1990 Toftdahl Drum Site Routine Monitoring Round III Toftdahl Drum Site Routine Monitoring Round IV Toftdahl Drum Long-term Monitoring, Round V - April 14, 1992 Toftdahl Drum Site Ground Water Monitoring, June 24, 1996 Toftdahl Drum Site Ground Water Monitoring Round VII, June 21, 1994 Toftdahl Drum Site Ground Water Monitoring Round VIII, July 17, 1995 Toftdahl Drum Site Ground Water Monitoring, Round VI- April 6, 1993. August 1993 Monitoring locations and results: Environmental Information Management System (EIM)
28	Evaluation of Groundwater Contamination at Roeder Avenue Landfill, Bellingham Report(s): Evaluation of Groundwater Contamination at Roeder Avenue Landfill, Bellingham Monitoring locations and results: Environmental Information Management System (EIM)
27	Relationship Between Ground Water and Surface Water in the Quilceda Creek Watershed Report(s): Relationship Between Ground Water and Surface Water in the Quilceda Creek Watershed Monitoring locations and results: Environmental Information Management System (EIM)
26	Pendleton Woolen Mill Land Application Site Ground Water Monitoring Evaluation Report(s): Pendleton Woolen Mill Land Application Site Ground Water Monitoring Evaluation Monitoring locations and results: Environmental Information Management System (EIM)
25	Assessments for Ground Water Contamination Potential: Sequim Bay State Park Report(s): Assessments for Ground Water Contamination Potential: Fort Flagler and Sequim Bay State Park
24	Pesticides in Washington Groundwater Report(s): Agricultural Chemicals Pilot Study Yakima County Study Area--Sampling and Analysis Plan Agricultural Chemicals Pilot Study Interim Report, August 1989. Pesticides in Washington State's Ground Water: A Summary Report, 1988-1995
23	Deer Park Land Application project Report(s): Winter Soil Pore-Water Nitrate at the Deer Park Land Application Site 1995-96 Vadose Monitoring at Deer Park, WA - A Municipal Effluent Land Application Site Monitoring locations and results: Environmental Information Management System (EIM)
22	Chehalis River Watershed Surficial Aquifer Characterization Report(s): Chehalis River Watershed Surficial Aquifer Characterization
21	Basic American Foods Class II Groundwater Inspection Report(s): Basic American Foods Class II Groundwater Inspection Monitoring locations and results: Environmental Information Management System (EIM)
20	Monterey Apartments Ground Water Monitoring, October 1995 - November 1997 Report(s): Monterey Apartments Ground Water Monitoring, October 1995 - November 1997 Monitoring locations and results: Environmental Information Management System (EIM)
19	Yelm Groundwater Baseline Sampling Report(s): Yelm Groundwater Baseline Sampling Monitoring locations and results: Environmental Information Management System (EIM)
18	Nooksack Surficial Aquifer Characterization Report(s): The Aquifer Vulnerability Project -- Nooksack Pilot Study Report Nooksack Watershed Surficial Aquifer Characterization
17	Moses Lake Dunes Wastewater Treatment Plant, Class II Groundwater Inspection Report(s): Moses Lake Dunes Wastewater Treatment Plant, Class II Groundwater Inspection Monitoring locations and results: Environmental Information Management System (EIM)
16	Statewide groundwater baseflow study Report(s): Estimated Baseflow Characteristics of Selected Washington Rivers and Streams: Water Supply Bulletin No. 60 Estimated Baseflow Characteristics of Selected Washington Rivers and Streams - data and GIS project files
15	Groundwater Data Compilation for the Okanogan Watershed Report(s): Groundwater Data Compilation for the Okanogan Watershed
14	Nutrient Loading Estimates: Groundwater Discharge to South Puget Sound Report(s): Nutrient Loading Estimates: Groundwater Discharge to South Puget Sound
13	Northcentral Sumas-Blaine Surficial Aquifer Nitrate Characterization Project Report(s): Northcentral Sumas-Blaine Surficial Aquifer Nitrate Characterization Project - June 1999 Sumas-Blaine Surficial Aquifer Nitrate Characterization Monitoring locations and results: Environmental Information Management System (EIM)
12	Hamilton/Labree Road PCE Site Groundwater Monitoring Report(s): Hamilton/Labree Road PCE Site Groundwater Monitoring, February and July 1999 Hamilton/Labree Road PCE Site Ground Water Monitoring October 1997 - July 1998 Monitoring locations and results: Environmental Information Management System (EIM)
11	Smith Prairie Groundwater Quality Assessment Report(s): Smith Prairie Groundwater Quality Assessment Monitoring locations and results: Environmental Information Management System (EIM)
10	WDOT Skokomish Groundwater monitoring and mounding analysis Report(s): WDOT-Skokomish Site near Potlatch: Volume 1. Rapid Infiltration Hydrogeologic Study WDOT-Skokomish Site near Potlatch: Volume 2. Groundwater Mounding Analysis Monitoring locations and results: Environmental Information Management System (EIM)
9	American Crossarm and Conduit Groundwater Monitoring Report(s): American Crossarm and Conduit Monitoring Results, May 5 and October 14, 1998 American Crossarm and Conduit Monitoring Results, June 22, 1999 American Crossarm and Conduit Monitoring Results, November 2000 and April 2001 American Crossarm and Conduit Monitoring Results, September 1999 and June 2000 American Crossarm and Conduit January 6-7, September 9-10, and December 9-10, 1997 Monitoring locations and results: Environmental Information Management System (EIM)
8	Spokane River/Aquifer Interaction Project Results, May - November 1999 Report(s): Spokane River/Aquifer Interaction Project Results, May - November 1999 Monitoring locations and results: Environmental Information Management System (EIM)
7	American Plating Groundwater Monitoring Report(s): American Plating Post-Interim-Action Groundwater Monitoring Results, March and August 2005 American Plating Post-Interim-Action Groundwater Monitoring Results, May and September, 2006 American Plating Post-Interim-Action Groundwater Monitoring Results: May and September, 2008 Addendum to the Quality Assurance Project Plan for the American Plating Post-Interim Action Monitoring. American Plating Post-Interim-Action Groundwater Monitoring Results, April and September, 2007 Quality Assurance Project Plan: American Plating Post-Interim Action Monitoring American Plating Post-Interim Action Groundwater Monitoring Results, February and August 2004 American Plating Post-Interim-Action Groundwater Monitoring Results: May and November, 2009 American Plating Post-Interim-Action Groundwater Monitoring Results: April and October, 2010 American Plating Post-Interim-Action Groundwater Monitoring Results: May and September, 2011 Monitoring locations and results: Environmental Information Management System (EIM)
6	Relationship Between the Upper Dungeness River and the Bedrock Aquifer, Clallam County Report(s): Relationship Between the Upper Dungeness River and the Bedrock Aquifer, Clallam County
5	Assessment of Surface Water and Groundwater Interchange within the Muck Creek Watershed, Pierce County Report(s): Quality Assurance Project Plan: Characterizing Surface Water/Groundwater Interactions in the Muck Creek Watershed Pierce County, Washington Assessment of Surface Water and Groundwater Interchange within the Muck Creek Watershed, Pierce County Monitoring locations and results: Environmental Information Management System (EIM)
4	Effects of Land Application of Dairy Manure and Wastewater on Groundwater Quality: Pre- and Post-Animal Waste Holding Pond Monitoring Report(s): Effects of Land Application of Dairy Manure and Wastewater on Groundwater Quality: Pre- and Post-Animal Waste Holding Pond Monitoring Monitoring locations and results: Environmental Information Management System (EIM)
3	Nooksak Dairies Groundwater Quality Report(s): Edaleen Dairy Lagoon Ground Water Quality Assessment February 1990 to February 1991 Effects of Land Application of Manure on Groundwater at Two Dairies over the Sumas-Blaine Surficial Aquifer: Implications for Agronomic Rate Estimates Effects of Leakage from Four Dairy Waste Storage Ponds on Ground Water Quality, Final Report Ground Water Quality Survey near Edaleen Dairy, Whatcom County, Washington, January 1990 to April 1993 Monitoring locations and results: Environmental Information Management System (EIM)
2	Restover Truck Stop Groundwater Monitoring Report(s): Sampling at Restover Truck Stop - October 1988 Laboratory Analysis Results of Restover Truck Stop Samples. Memo to Mike Kuntz April 10, 1989 Restover Truck Stop Sampling Round 2. Memo to Mike Kuntz June 12, 1989 Restover Truck Stop Sampling Round 3. Memo to Mike Kuntz Dec. 11, 1989 Results for Monitoring Round 3 - Restover Truck Stop. Memo to Mike Kuntz, Dec. 11, 1989 Restover Truck Stop Groundwater Monitoring, Round IV. Memo to Mike Gallagher, May 29, 1980 Restover Truck Stop Groundwater Monitoring, Round V. Restover Truck Stop Groundwater Monitoring, Round VII. Restover Truck Stop Groundwater Monitoring, Round VIII, Bebruary 19 & 21, 1992 Restover Truck Stop Groundwater Monitoring, Results of February 2002 Sampling Restover Truck Stop Groundwater Monitoring, Results of December 2000 Sampling Restover Truck Stop, Groundwater Monitoring, Results of January 2000 Sampling Restover Truck Stop Ground Water Monitoring January and July 1999 Restover Truck Stop Ground Water Monitoring, February and July 1998 Restover Truck Stop Ground Water Monitoring, August and November 1996 Restover Truck Stop Ground Water Monitoring, February and August 1997 Restover Truck Stop Ground Water Monitoring, August and October 1995 Restover Truck Stop Ground Water Monitoring, February and April 1996 Restover Truck Stop Ground Water Monitoring, August and November 1994 Restover Truck Stop Ground Water Monitoring, February and April 1995 Restover Truck Stop Ground Water Monitoring, January and April 1994 Restover Truck Stop Long-Term Monitoring, Rounds XI & XII Restover Truck Stop Ground Water Monitoring, Round IX, July 20 & 21, 1992 Restover Truck Stop Ground Water Monitoring, Round X, January 5 & 6, 1993 Restover Truck Stop Ground Water Monitoring, Round VI Restover Truck Stop Monitoring Round 3 - July 1989 Monitoring locations and results: Environmental Information Management System (EIM)
1	Surface Water-Ground Water Interactions Along the Dungeness River and Vertical Hydraulic Conductivity of Streambed Sediments, Clallam County, Washington, September 1999-July 2001 Report(s): Surface Water-Ground Water Interactions Along the Dungeness River and Vertical Hydraulic Conductivity of Streambed Sediments, Clallam County, Washington, September 1999-July 2001

For more information about the Environmental Assessment Program groundwater team activities, please contact: Martha Maggi (mmag461@ecy.wa.gov). For questions about this web page please contact Charles Pitz (chpi461@ecy.wa.gov).