Background Groundwater Concentration Regions

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Published by the Ministry of Environment and Climate Change Strategy - Environmental Emergencies and Land Remediation
Licensed under Access Only

Background groundwater concentration regions with estimates for arsenic, lithium, selenium, vanadium and uranium in groundwater in British Columbia.

Data and Resources

Dataset Extent

Latitude: 48.0° to 60.0°
Longitude: -139.5° to -113.5°

Additional Information

Purpose

Groundwater that contains a substance at concentrations above the applicable numerical water standard at a site but below the local background concentration for that substance, as determined under this technical bulletin or Protocol 9 – Determining Background Groundwater Quality (Protocol 9), would not be considered contaminated under Section 11 (3) of the Contaminated Sites Regulation (CSR). Similarly, groundwater that has been remediated for a substance to concentrations above the applicable numerical water standard for the site but below the local background concentration for that substance as determined under this technical bulletin or Protocol 9 would be considered satisfactorily remediated under Section 17 (2) (b) of the CSR. The regional background groundwater estimates allow the use of these provisions within the CSR.

Contact Information

NameEnvironmental Emergencies and Land Remediation Branch (pointOfContact)
Emailsite@gov.bc.ca
OrganizationMinistry of Environment and Climate Change Strategy
Sub-OrganizationEnvironmental Emergencies and Land Remediation

Access & Security

Who can view this dataset? Public
Who can download this dataset?Public

Metadata Information

Record Published 2019-08-01
Record Last Modified 2019-09-20
Resource Status completed
Spatial DataSDO_GEOMETRY

Object Description

Object Name: WHSE_WASTE.CSR_BKGD_GRNDWTR_CONC_AREAS_SP

Short Name: BGWTR_CNC
Comments: This layer contains the geographic boundary for each of the defined regions where the background groundwater concentrations are applicable. This is a polygon dataset.

Column Name Short Name Data Type Data Precision Comments
CSR_BGCA_SYSID BGC_SYSID NUMBER 10 CSR_BGCA_SYSID is a system generated unique identification number
CONCENTRATION_REGION REGION VARCHAR2 50 CONCENTRATION_REGION is the name of the concentration area, e.g., Lower Mainland, Thompson-Okanagan, South Vancouver Island.
CONCENTRATION_SUB_REGION SUB_REGION VARCHAR2 5 CONCENTRATION_SUB_REGION is the number to divide a concentration area, e.g., 1, 2, N/A
CONCENTRATION_ARSENIC ARSENIC NUMBER 3 CONCENTRATION_ARSENIC contains the background groundwater concentration estimate of Arsenic for each region, e.g., 37.
CONCENTRATION_ARSENIC_UNIT ARSENIC_U VARCHAR2 10 CONCENTRATION_ARSENIC_UNIT contains Arsenic concentration value unit that is reported in, e.g., ug/L.
CONCENTRATION_LITHIUM LITHIUM NUMBER 3 CONCENTRATION_LITHIUM contains the background groundwater concentration estimate of Lithium for each region, e.g., 28.
CONCENTRATION_LITHIUM_UNIT LITHIUM_U VARCHAR2 10 CONCENTRATION_LITHIUM_UNIT contains Lithium concentration value unit that is reported in, e.g., ug/L.
CONCENTRATION_SELENIUM SELENIUM NUMBER 3 CONCENTRATION_SELENIUM contains the background groundwater concentration estimate of Selenium for each region, e.g., 4.
CONCENTRATION_SELENIUM_UNIT SELENIUM_U VARCHAR2 10 CONCENTRATION_SELENIUM_UNIT contains Selenium concentration value unit that is reported in, e.g., ug/L.
CONCENTRATION_URANIUM URANIUM NUMBER 3 CONCENTRATION_URANIUM contains the background groundwater concentration estimate of Uranium for each region, e.g., 11.
CONCENTRATION_URANIUM_UNIT URANIUM_U VARCHAR2 10 CONCENTRATION_URANIUM_UNIT contains Uranium concentration value unit that is reported in, e.g., ug/L.
CONCENTRATION_VANADIUM VANADIUM NUMBER 3 CONCENTRATION_VANADIUM contains the background groundwater concentration estimate of Vanadium for each region , e.g., 19.
CONCENTRATION_VANADIUM_UNIT VANADIUM_U VARCHAR2 10 CONCENTRATION_VANADIUM_UNIT contains Vanadium concentration value unit that is reported in, e.g., ug/L.
FEATURE_AREA_SQM FEAT_AREA NUMBER 19 FEATURE_AREA_SQM is the system calculated area of a two-dimensional polygon in square meters.
FEATURE_LENGTH_M FEAT_LEN NUMBER 19 FEATURE_LENGTH_M is the system calculated length or perimeter of a geometry in meters.
SHAPE SHAPE SDO_GEOMETRY 1 SHAPE is the column used to reference the spatial coordinates defining the feature
OBJECTID OBJECTID NUMBER 38 OBJECTID is a column required by spatial layers that interact with ESRI ArcSDE. It is populated with unique values automatically by SDE.
SE_ANNO_CAD_DATA BLOB 4000 SE_ANNO_CAD_DATA is a binary column used by spatial tools to store annotation, curve features and CAD data when using the SDO_GEOMETRY storage data type.