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Federal
Operable Unit 2 Boundary, CRMS, 2017, EPA recent views
U.S. Environmental Protection Agency —
EPA has compiled a significant volume of soil, sediment, surface water and biota geodata, collected either directly, by our contractors and in many cases by our... -
Federal
Tailings Locations Polygons, CRMS, 2012, NDEP and Piedmont Engineering recent views
U.S. Environmental Protection Agency —
This feature class contains Comstock-era tailings locations throughout Operable Unit 1 (OU1) of the Carson River Mercury Site (CRMS) within Lyon and Storey Counties,... -
Federal
Soil and Sediment Mercury Samples, Lahontan, 1993, USBR recent views
U.S. Environmental Protection Agency —
This is a summary of mercury (Hg) data from the Lahontan Reservoir area of the Carson River Basin. USBR provided an information overview and reference source on... -
Federal
Fish Tissue Samples, CRMS, 2012, EPA, USFWS, and USGS recent views
U.S. Environmental Protection Agency —
EPA has collected soil, sediment, surface water and biota data to complete the remedial investigation (RI) at the Operable Unit (OU) No. 2 of the Carson River Mercury... -
Federal
Tribal Administrative Boundary Polygon, Navajo Nation, 2015, U.S. EPA Region 9 recent views
U.S. Environmental Protection Agency —
This GIS dataset contains a polygon feature representing the administrative boundary of the Navajo Nation, inclusive of the eastern "checkerboard areas" that includes... -
Federal
Santa Maria Ranch Phase I Initial Borrow Soil Samples, CRMS, 2020, NDEP recent views
U.S. Environmental Protection Agency —
This feature class depicts the locations and analytical data for the initial borrow samples taken by Converse Consultants in 2004 during construction of Santa Maria... -
Federal
Washoe Lake Study Area, CRMS, 2020, EPA and NDEP recent views
U.S. Environmental Protection Agency —
This feature class represents a future study area. EPA plans to determine the nature and extent of contamination in Washoe Lakes and the Steamboat Creek headwaters.... -
Federal
Bank Erosion Study Total Mercury Soil Samples, CRMS 1993, EPA and E&E recent views
U.S. Environmental Protection Agency —
In order to collect samples which represent the levels of mercury occurring on the flood plain above Lahontan Reservoir, EPA collected surface and subsurface samples... -
Federal
Onda Verde Parcels, CRMS, 2020, NDEP recent views
U.S. Environmental Protection Agency —
This feature class contains parcel boundaries and their environmental covenant status within the Onda Verde Subdivision in Churchill County, Nevada. An environmental... -
Federal
Surface Water Hg and MeHg Samples, Below Lahontan, 1997-2013, USGS recent views
U.S. Environmental Protection Agency —
The Carson River is a vital water resource for local municipalities and migratory birds travelling the Pacific Flyway. Historic mining practices that used mercury... -
Federal
Surface Water MeHg Samples, CRMS, 2015, EPA recent views
U.S. Environmental Protection Agency —
The primary purpose of the surface water collection was to correlate methylmercury information with sediment core data from several areas in which no data existed... -
Federal
Mercury Methylation Study Sediment Samples, Carson River, 1999, USGS recent views
U.S. Environmental Protection Agency —
USGS conducted preliminary assays on aged (3 mo.) surface sediment (0-4 cm) collected from 13 sites during October 1998 in order to decipher general spatial trends in... -
Federal
Santa Maria Ranch Phase II Soil Samples, CRMS, 2020, NDEP recent views
U.S. Environmental Protection Agency —
This feature class depicts the locations and analytical data for the soil samples taken by Converse Consultants in 2009. These samples represent a preliminary site... -
Federal
Riverpark Soil Sample Points, CRMS, 2020, NDEP recent views
U.S. Environmental Protection Agency —
Soil investigation in the Riverpark subdivision took place over several phases. This feature class contains final grade samples taken in Phases III and IV. Resource... -
Federal
EPA R6 Superfund NPL Site Locations as of 3/31/2023; EPA Region 6 Superfund, AR, LA, NM, OK, TX recent views
U.S. Environmental Protection Agency —
Point locations for sites in EPA Region 6 which are documented as being part of the National Priorities List as of 3/31/2023. The locations were determined by EPA... -
Federal
XRF Incremental Sampling Method Study, Six Mile Canyon, 2019, EPA recent views
U.S. Environmental Protection Agency —
The current conceptual site model (CSM) includes data gaps related to the extent of mercury contamination throughout the site, as well as the presence of other metal... -
Federal
Vegetable/Fruit/Soil Total Mercury Samples, Dayton, 1993, EPA and E&E recent views
U.S. Environmental Protection Agency —
EPA evaluated the total mercury representative of vegetables and/or fruit and colocated soil from several gardens located in Dayton and Silver City (OU1) for the... -
Federal
Santa Maria Ranch Phase III Soil Samples, CRMS, 2020, NDEP recent views
U.S. Environmental Protection Agency —
This feature class depicts the locations and analytical data for confirmation samples collected by Converse Consultants in 2006 within the top 2 feet of soil at... -
Federal
Wetland Contaminant Samples, Stillwater NWR, 1996, USFWS and USGS recent views
U.S. Environmental Protection Agency —
Investigations of wetlands in Lahontan Valley have documented concentrations of inorganic contaminants in water, sediment, and biological samples in excess of... -
Federal
Surface Water Samples, Fallon Paiute-Shoshone Tribe, 2009, USBR recent views
U.S. Environmental Protection Agency —
USBR collected this data to evaluate the physical properties of the water (dissolved oxygen, pH, temperature, turbidity, specific conductance), common pathogens...