Author: Carmen A. Burton
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 4
Book Description
Groundwater Quality in the South Coast Range Coastal Groundwater Basins, California
Author: Carmen A. Burton
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 4
Book Description
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 4
Book Description
Status and Understanding of Groundwater Quality in the South Coast Range-Coastal Study Unit, 2008
Author: Carmen A. Burton
Publisher: CreateSpace
ISBN: 9781500267667
Category : Groundwater
Languages : en
Pages : 96
Book Description
Groundwater quality in the approximately 653-square-mile (1,691-square-kilometer) South Coast Interior Basins (SCI) study unit was investigated as part of the Priority Basin Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The South Coast Interior Basins study unit contains eight priority groundwater basins grouped into three study areas, Livermore, Gilroy, and Cuyama, in the Southern Coast Ranges hydrogeologic province. The GAMA Priority Basin Project is being conducted by the California State Water Resources Control Board in collaboration with the U.S. Geological Survey (USGS) and the Lawrence Livermore National Laboratory. The GAMA South Coast Interior Basins study was designed to provide a spatially unbiased assessment of untreated (raw) groundwater quality within the primary aquifer system, as well as a statistically consistent basis for comparing water quality between basins. The assessment was based on water-quality and ancillary data collected by the USGS from 50 wells in 2008 and on water-quality data from the California Department of Public Health (CDPH) database. The primary aquifer system was defined by the depth intervals of the wells listed in the CDPH database for the SCI study unit. The quality of groundwater in the primary aquifer system may be different from that in the shallower or deeper water-bearing zones; shallow groundwater may be more vulnerable to surficial contamination. The first component of this study, the status of the current quality of the groundwater resource, was assessed by using data from samples analyzed for volatile organic compounds (VOCs), pesticides, and naturally occurring inorganic constituents, such as trace elements and minor ions. This status assessment is intended to characterize the quality of groundwater resources within the primary aquifer system of the SCI study unit, not the treated drinking water delivered to consumers by water purveyors. Relative-concentrations (sample concentration divided by the health- or aesthetic-based benchmark concentration) were used for evaluating groundwater quality for those constituents that have Federal or California regulatory or non-regulatory benchmarks for drinking-water quality. A relative-concentration greater than 1.0 indicates a concentration greater than a benchmark, and a relative-concentration less than or equal to 1.0 indicates a concentration equal to or less than a benchmark. Relative-concentrations of organic constituents and special-interest constituents were classified as "high" (relative-concentration greater than 1.0), "moderate" (relative-concentration greater than 0.1 and less than or equal to 1.0), or "low" (relative-concentration less than or equal to 0.1). Relative-concentrations of inorganic constituents were classified as "high" (relative-concentration greater than 1.0), "moderate" (relative-concentration greater than 0.5 and less than or equal to 1.0), or "low" (relative-concentration less than or equal to 0.5).
Publisher: CreateSpace
ISBN: 9781500267667
Category : Groundwater
Languages : en
Pages : 96
Book Description
Groundwater quality in the approximately 653-square-mile (1,691-square-kilometer) South Coast Interior Basins (SCI) study unit was investigated as part of the Priority Basin Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The South Coast Interior Basins study unit contains eight priority groundwater basins grouped into three study areas, Livermore, Gilroy, and Cuyama, in the Southern Coast Ranges hydrogeologic province. The GAMA Priority Basin Project is being conducted by the California State Water Resources Control Board in collaboration with the U.S. Geological Survey (USGS) and the Lawrence Livermore National Laboratory. The GAMA South Coast Interior Basins study was designed to provide a spatially unbiased assessment of untreated (raw) groundwater quality within the primary aquifer system, as well as a statistically consistent basis for comparing water quality between basins. The assessment was based on water-quality and ancillary data collected by the USGS from 50 wells in 2008 and on water-quality data from the California Department of Public Health (CDPH) database. The primary aquifer system was defined by the depth intervals of the wells listed in the CDPH database for the SCI study unit. The quality of groundwater in the primary aquifer system may be different from that in the shallower or deeper water-bearing zones; shallow groundwater may be more vulnerable to surficial contamination. The first component of this study, the status of the current quality of the groundwater resource, was assessed by using data from samples analyzed for volatile organic compounds (VOCs), pesticides, and naturally occurring inorganic constituents, such as trace elements and minor ions. This status assessment is intended to characterize the quality of groundwater resources within the primary aquifer system of the SCI study unit, not the treated drinking water delivered to consumers by water purveyors. Relative-concentrations (sample concentration divided by the health- or aesthetic-based benchmark concentration) were used for evaluating groundwater quality for those constituents that have Federal or California regulatory or non-regulatory benchmarks for drinking-water quality. A relative-concentration greater than 1.0 indicates a concentration greater than a benchmark, and a relative-concentration less than or equal to 1.0 indicates a concentration equal to or less than a benchmark. Relative-concentrations of organic constituents and special-interest constituents were classified as "high" (relative-concentration greater than 1.0), "moderate" (relative-concentration greater than 0.1 and less than or equal to 1.0), or "low" (relative-concentration less than or equal to 0.1). Relative-concentrations of inorganic constituents were classified as "high" (relative-concentration greater than 1.0), "moderate" (relative-concentration greater than 0.5 and less than or equal to 1.0), or "low" (relative-concentration less than or equal to 0.5).
Framework for a Ground-water Quality Monitoring and Assessment Program for California
Author: Kenneth Belitz
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 100
Book Description
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 100
Book Description
Framework for a Ground-Water Quality Monitoring and Assessment Program for California
Author:
Publisher: DIANE Publishing
ISBN: 1428960589
Category :
Languages : en
Pages : 88
Book Description
Publisher: DIANE Publishing
ISBN: 1428960589
Category :
Languages : en
Pages : 88
Book Description
Groundwater Quality in the South Coast Interior Basins, California
Author: Mary C. Parsons
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 4
Book Description
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 4
Book Description
Status and Understanding of Groundwater Quality in the South Coast Interior Groundwater Basins, 2008
Author: Mary C. Parsons
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 68
Book Description
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 68
Book Description
Ground-water Quality in the Santa Ana Watershed, California
Author:
Publisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 156
Book Description
Publisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 156
Book Description
A Comprehensive Groundwater Quality Monitoring Program for California
Author: California Environmental Protection Agency. State Water Resources Control Board
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 128
Book Description
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 128
Book Description
Summary Appraisals of the Nation's Ground-water Resources--California Region
Author: Harold Edgar Thomas
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 70
Book Description
Problems and opportunities related to the use of ground water in highly diverse hydrologic and social environments.
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 70
Book Description
Problems and opportunities related to the use of ground water in highly diverse hydrologic and social environments.
Status of Groundwater Quality in the Coastal Los Angeles Basin, 2006
Author: Dara Goldrath
Publisher: CreateSpace
ISBN: 9781500490928
Category : Technology & Engineering
Languages : en
Pages : 72
Book Description
The Coastal Los Angeles Basin study unit is approximately 860 square miles and consists of the Santa Monica, Hollywood, West Coast, Central, and Orange County Coastal Plain groundwater basins (California Department of Water Resources, 2003). The basins are bounded in part by faults, including the Newport-Inglewood fault zone, and are filled with Holocene-, Pleistocene-, and Pliocene-age marine and alluvial sediments. The Central Basin and Orange County Coastal Plain are divided into a forebay zone on the northeast and a pressure zone in the center and southwest. The forebays consist of unconsolidated coarser sediment, and the pressure zones are characterized by lenses of coarser sediment divided into confined to semi-confined aquifers by lenses of finer sediments. The primary aquifer system in the study unit is defined as those parts of the aquifer system corresponding to the perforated intervals of wells listed in the California Department of Public Health (CDPH) database of public-supply wells. The majority of public-supply wells are drilled to depths of 510 to 1,145 feet, consist of solid casing from the land surface to a depth of about 300 to 510 feet, and are perforated below the solid casing. Water quality in the primary aquifer system may differ from that in the shallower and deeper parts of the aquifer systems.
Publisher: CreateSpace
ISBN: 9781500490928
Category : Technology & Engineering
Languages : en
Pages : 72
Book Description
The Coastal Los Angeles Basin study unit is approximately 860 square miles and consists of the Santa Monica, Hollywood, West Coast, Central, and Orange County Coastal Plain groundwater basins (California Department of Water Resources, 2003). The basins are bounded in part by faults, including the Newport-Inglewood fault zone, and are filled with Holocene-, Pleistocene-, and Pliocene-age marine and alluvial sediments. The Central Basin and Orange County Coastal Plain are divided into a forebay zone on the northeast and a pressure zone in the center and southwest. The forebays consist of unconsolidated coarser sediment, and the pressure zones are characterized by lenses of coarser sediment divided into confined to semi-confined aquifers by lenses of finer sediments. The primary aquifer system in the study unit is defined as those parts of the aquifer system corresponding to the perforated intervals of wells listed in the California Department of Public Health (CDPH) database of public-supply wells. The majority of public-supply wells are drilled to depths of 510 to 1,145 feet, consist of solid casing from the land surface to a depth of about 300 to 510 feet, and are perforated below the solid casing. Water quality in the primary aquifer system may differ from that in the shallower and deeper parts of the aquifer systems.