Monterey Quadrangle NURE HSSR Study

OFR 97-492: Monterey Quadrangle NURE HSSR Study

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National Geochemical Database—Reformatted Data from the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) Program

By Steven M. Smith
Version 1.40 (2006)

This page is currently being rewritten to the Version 1.41 format.

Brief History and Description of Data

[See History of NURE HSSR Program for a summary of the entire program.]

Totals of 1,270 sediment and 633 water samples were collected in the Monterey quadrangle (formerly known as the Santa Cruz quadrangle) from November 1979 through February of 1980 as part of the Savannah River Laboratory (SRL) Santa Cruz Quadrangle NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) study. These samples were analyzed by SRL for uranium and other elements (16 additional elements in sediments and 9 in waters) and the analytical data were released in the GJBX-314(81) report. These samples were then sent to other laboratories for "supplemental analyses." The supplemental analytical data, with results for 23 elements in sediments and 27 elements in waters, were not released in a separate report by SRL.

In 1982, the Oak Ridge Gaseous Diffusion Plant (ORGDP) released the data from supplementary analyses of a selection of the SRL water samples from the San Luis Obispo and Monterey quadrangles in the GJBX-166(82) abbreviated report (on microfiche only). This report includes the supplemental data for up to 27 elements in 632 of the Monterey water samples. The site coding information for this data set was summarized in the GJBX-164(82) report.

In 1982, SRL released a summary report and data files for 50 quadrangles in the Western United States. For the Monterey quadrangle, this report (GJBX-132(82)) contains the SRL analytical data for sediment and water samples. The supplemental data from ORGDP were not included in this report.

SRL analyses of light hydrocarbons (methane, ethane, propane, and butane) in ground waters were released in the GJBX-131(82) summary report for 44 western quadrangles and 3 eastern quadrangles within the United States. This report includes data for 78 of the Monterey quadrangle ground water samples.

Data for gold analyses of sediments by SRL neutron activation were released in the GJBX-135(82) summary report. The introduction of that report states:

"This report contains previously unreported neutron-activation analyses of gold in sediment samples determined at SRL. These data were not included in the standard SRL NURE data reports because the gold spectrum was not measured in the original analytical procedure and the report format was designed without the gold analyses being included. Gold analyses became available as the analytical procedure was refined, but the report format was not modified to incorporate these data."

Only those sediment samples that had detectable concentrations of gold by neutron activation analysis were given in the GJBX-135(82) report. Sediment samples with concentrations below detection limits were not reported and can only be ascertained by identifying which samples were actually analyzed by neutron activation at SRL.

The following is a list of all sample types collected and reported for NURE studies in the Monterey quadrangle. The actual number of records in the NEW-FORMAT NURE data files may be greater because of the multiple records needed to preserve all the data.

*Summary of Monterey quadrangle sample types.*
Sediment Sample Type	Number of Samples	Water Sample Type	Number of Samples
Wet Streams	11	Streams	12
Dry Streams	606	Wells	492
Soils	605	Springs	128
Talus	37	Lakes	1
Other (may include mine tailings)	11
Total Sediments	1,270	Total Waters	633

These Monterey quadrangle samples were analyzed one or more of the following methods:

Sediment Samples

SR1: Savannah River Neutron Activation Analysis - Neutron Counting of sediments for U.
SR2: Savannah River Neutron Activation Analysis of sediments for Al, Ce, Dy, Eu, Fe, Hf, La, Lu, Mn, Na, Sc, Sm, Th, Ti, V, and Yb. (Note: Au values were reported later for this method.)

Water Samples

SR4: Savannah River Neutron Activation Analysis - Neutron Counting of waters for U.
SR6: Savannah River Neutron Activation Analysis of waters for Al, Br, Cl, Dy, F, Mg, Mn, Na, and V.
SR-HE: Savannah River Helium Analysis of waters.
SR-GC: Savannah River Gas Chromatography of waters for light hydrocarbons.
OR13: Supplemental Analyses by Oak Ridge Emission Spectrochemical Analysis of waters for Ag, Al, B, Ba, Be, Ca, Ce, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Sc, Si, Sr, Ti, V, Y, Zn, and Zr. (Note: Nb and Th may be included in this method.)

Composition of the NEW-FORMAT NURE Data Files

The data in the NEW-FORMAT NURE water data file consist of records from the GJBX-132(82) western U.S. summary report and the Oak Ridge GJBX-166(82) abbreviated report. In this file, the SRL analyses and supplemental analyses could NOT be combined because of overlapping determinations for 5 elements. Each water sample may therefore have 2 separate records - one for the SRL analysis and one for the supplemental analysis. The site information for every record in the GJBX-166(82) quadrangle report was checked against the "equivalent" record in the GJBX-132(82) western U.S. summary report and any major differences were noted in the REFORMAT comment field.

The data in the NEW-FORMAT NURE sediment file consist of records from the GJBX-132(82) western U.S. summary report.

Hydrocarbon data from the GJBX-131(82) report were added to fields in the appropriate ground water records and this addition was noted for each record in the REFORMAT comment field.

Gold concentrations from the GJBX-135(82) report were added to the appropriate sediment records. A value of -0.01 (<0.01 ppm Au) was added to all other sediment samples determined to have been analyzed by SRL neutron activation. This value was chosen because 0.01 is the lowest reported gold concentration in the entire report.

Download The Data

The NURE HSSR data are now available online in two databases: The sediment database (also includes data for soils and some rocks) at http://tin.er.usgs.gov/nure/sediment/ and the water database at http://tin.er.usgs.gov/nure/water/. From these two websites, NURE HSSR data can be selected, examined, summarized, and downloaded by political boundaries (State and County), by quadrangle (1:250,000-scale, 1:100,000-scale, and 1:63,360-scale for Alaska or 1:24,000-scale for the Lower 48 States), and by hydrologic unit (drainage region, subregion, river basin, or sub-basin). Selected data can be downloaded as a dBase file, a shapefile, an HTML table, or ASCII text (tab- or comma-delimited).

Monterey Quadrangle Sediment Data - 1,263 records
Monterey Quadrangle Water Data - 1,265 records

Notes for Data Users

Many records contain analytical values with insignificant digits. Most data should only have 2 or 3 significant digits. Differences after the second or third digit should be ignored.

Other NURE Geochemical Data for the Monterey Quadrangle

None found.

Monterey Quadrangle NURE Bibliography

Cook, J.R., 1981, Santa Cruz 1° x 2° NTMS Area, California, data report (abbreviated): E.I. du Pont de Nemours & Co., Savannah River Laboratory, Aiken, S.C., SRL Internal Doc. DPST-81-146-18, U.S. Department of Energy, Grand Junction, Colo., GJBX-314(81), 18 p.
Cook, J.R., and Fay, W.M., 1982, Data report: Western United States: E.I. du Pont de Nemours & Co., Savannah River Laboratory, Aiken, S.C., SRL Internal Doc. DPST-81-146-28, U.S. Department of Energy, Grand Junction, Colo., GJBX-132(82), 33 p.
Dromgoole, E.L., 1982, Report of analyses for light hydrocarbons in ground water: E.I. du Pont de Nemours & Co., Savannah River Laboratory, Aiken, S.C., SRL Internal Doc. DPST-81-141-19, U.S. Department of Energy, Grand Junction, Colo., GJBX-131(82), 14 p.
Fay, W.M., and Cook, J.R., 1982, Gold analyses by neutron activation from SRL NURE samples: E.I. du Pont de Nemours & Co., Savannah River Laboratory, Aiken, S.C., SRL Internal Doc. DPST-81-141-38, U.S. Department of Energy, Grand Junction, Colo., GJBX-135(82), 45 p.
Uranium Resource Evaluation Project, 1982, Hydrogeochemical and stream sediment reconnaissance basic data for San Luis Obispo and Santa Cruz quadrangles, California: Union Carbide Corporation, Nuclear Division, Oak Ridge Gaseous Diffusion Plant, Oak Ridge, Tenn., K/UR-446, U.S. Department of Energy, Grand Junction, Colo., GJBX-166(82), microfiche.
Uranium Resource Evaluation Project, 1982, Supplement to HSSR basic data reports K/UR-445 through K/UR-457 [GJBX-165(82) through GJBX-177(82)]: Union Carbide Corporation-Nuclear Division, Oak Ridge Gaseous Diffusion Plant, Oak Ridge, Tenn., K/UR-458, U.S. Department of Energy, Grand Junction, Colo., GJBX-164(82), 25 p.

Links Within Open-File Report 97-492

Back to California NURE data
Frequently Asked Questions Concerning NURE HSSR Data
Home Page: USGS National Geochemical Database - NURE HSSR data

Page written by Andrew W. Holt and Steven M. Smith
Contact: Steven M. Smith (smsmith@usgs.gov)
Version 1.10: July 29, 1999
Version 1.20: August 07, 2000
Version 1.30: September 11, 2001
Version 1.40: January 13, 2006

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U.S. Department of the Interior \| U.S. Geological Survey URL: https://pubsdata.usgs.gov/pubs/of/1997/ofr-97-0492/quad/q_montry.htm Questions or Assistance: USGS Web Contact Page Last Modified: Wed Dec 7 16:14 EDT 2016

National Geochemical Database—Reformatted Data from the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) Program By Steven M. Smith Version 1.40 (2006)