Areas Susceptible to Groundwater Contamination

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: King County

Publication_Date: 20050323

Title: Areas Susceptible to Groundwater Contamination

Edition: One

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: King County, WA

Publisher: King County

Other_Citation_Details: None

Online_Linkage: <http://www5.kingcounty.gov/gisdataportal/Default.aspx>

Description:

Abstract: Areas susceptible to groundwater contamination

Purpose:

This dataset was created to fulfill a requirement of the Growth Management Act: analysze and protect remaining areas of high aquifer susceptibility ot groundwater contamination.

Supplemental_Information:

The ASGWC data history: This data set represents the joining of 9 separate analyses for 9 different study areas. In most cases, surficial geology, soils and depth to groundwater were combined in a matrix to determine final susceptibility. SOURCES: Vashon - Maury Island : used new geology from U. of Wa. for PType, (WHPA's, DTW, to update ASGWC susceptibility data July 2007. New susceptibility data from U. of Wa. added for parts of Issaquah and Redmond/Bear Creek data updated Feb. 2008. Schema changes Feb. 2008, added "D_GW"; "RECHARGE" name changed to " SUSCEPT"; "RCH_SUM" changed to "SUSCP_SUM". REDMOND/BEAR CREEK GWMA - EMCON NW Date: 01/01/1992 Scale: Unknown VASHON GWMA - GERACHTY AND MILLER Date: 01/01/1993 Scale: Unknown Date: 01/01/1993 Scale: Unknown SOUTH KING GWMA - ECOMOMIC AND ENGINEERING SERVICES, INC. Date: 01/01/1991 Scale: Unknown EAST KING GWMA - US GEO. SURVEY, TACOMA Date: 01/01/1993 Scale: Unknown LOWER CEDAR S.A. - EMCON NW Date: 01/01/1993 Scale: Unknown ENUMCLAW, HWOLLYWOOD HILLS, AND S. BELLEVUE - KC STAFF(DDES) Date: 01/01/1994 Scale: Unknown MANUSCRIPTION: For all consultant work: please consult the studies. King County Staff interpreted geology, soils, and well log maps for their contribution to the process. List of steps: Interpretation - Looking at USGS Geology and SCS soils maps, they were interpreted for H-M-L as regards recharge. Interpretation - Well log data was plotted based on lat-long coords. Depth to groundwater was determined for each well. Polygons were then drawn for H-M-L D. to groundwater AUTOMATION: (King Co. Staff work only) 3 layers (GEO., soils,depth to GW) were over lanin. A matrix was used to determine resultant recharge in each resulting polygon. QUALITY ASSURANCE: March 2008, digitizing irregularities and null values have been noted by DNRP/WLRD/STS/WQQ - Hydrologic Services Group and KC GIS data steward. These irregularities will be addressed in future updates to ASGWC. The total area increased because the RBC has a greater mapped area than the previous ASGWC map extent. The ASGWC data history: This data set represents the joining of 9 separate analyses for 9 different study areas. In most cases, surficial geology, soils and depth to groundwater were combined in a matrix to determine final susceptibility. SOURCES: Vashon - Maury Island : used new geology from U. of Wa. for PType, (WHPA's, DTW, to update ASGWC susceptibility data July 2007. New susceptibility data from U. of Wa. added for parts of Issaquah and Redmond/Bear Creek data updated Feb. 2008. Schema changes Feb. 2008, added "D_GW"; "RECHARGE" name changed to " SUSCEPT"; "RCH_SUM" changed to "SUSCP_SUM". REDMOND/BEAR CREEK GWMA - EMCON NW Date: 01/01/1992 Scale: Unknown VASHON GWMA - GERACHTY AND MILLER Date: 01/01/1993 Scale: Unknown Date: 01/01/1993 Scale: Unknown SOUTH KING GWMA - ECOMOMIC AND ENGINEERING SERVICES, INC. Date: 01/01/1991 Scale: Unknown EAST KING GWMA - US GEO. SURVEY, TACOMA Date: 01/01/1993 Scale: Unknown LOWER CEDAR S.A. - EMCON NW Date: 01/01/1993 Scale: Unknown ENUMCLAW, HWOLLYWOOD HILLS, AND S. BELLEVUE - KC STAFF(DDES) Date: 01/01/1994 Scale: Unknown MANUSCRIPTION: For all consultant work: please consult the studies. King County Staff interpreted geology, soils, and well log maps for their contribution to the process. List of steps: Interpretation - Looking at USGS Geology and SCS soils maps, they were interpreted for H-M-L as regards recharge. Interpretation - Well log data was plotted based on lat-long coords. Depth to groundwater was determined for each well. Polygons were then drawn for H-M-L D. to groundwater AUTOMATION: (King Co. Staff work only) 3 layers (GEO., soils,depth to GW) were over lanin. A matrix was used to determine resultant recharge in each resulting polygon. QUALITY ASSURANCE: March 2008, digitizing irregularities and null values have been noted by DNRP/WLRD/STS/WQQ - Hydrologic Services Group and KC GIS data steward. These irregularities will be addressed in future updates to ASGWC. The total area increased because the RBC has a greater mapped area than the previous ASGWC map extent.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 20080221

Single_Date/Time:

Calendar_Date: 20080227

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -122.541801

East_Bounding_Coordinate: -121.695106

North_Bounding_Coordinate: 47.780938

South_Bounding_Coordinate: 47.147729

Keywords:

Theme:

Theme_Keyword_Thesaurus: Not applicable

Theme_Keyword: groundwater

Theme_Keyword: natural resources

Theme_Keyword: enviro

Place:

Place_Keyword_Thesaurus: Not applicable

Place_Keyword: Pacific NW

Place_Keyword: Washington state

Place_Keyword: King County

Place_Keyword: WA

Access_Constraints: None

Use_Constraints:

King County data are made available with the understanding that they shall be used exclusively by the obtainer or his/her authorized agents. Digital products may not be reproduced or redistributed in any form or by any means without the express written authorization of King County.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

King County Dept. of Natural Resources and Parks, Water and Lands Resources Division

Contact_Person: Ken Rauscher

Contact_Position: Senior GIS Analyst

Contact_Address:

Address_Type: mailing and physical

Address: 201 South Jackson Street, Suite 706

City: Seattle

State_or_Province: WA

Postal_Code: 98104

Country: US

Contact_Voice_Telephone: 206-296-1922

Browse_Graphic:

Browse_Graphic_File_Name: <http://www5.kingcounty.gov/sdc/DataImages/asgwc.jpg>

Browse_Graphic_File_Description: JPG File

Browse_Graphic_File_Type: JPG

Data_Set_Credit: King County

Native_Data_Set_Environment:

Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.3.3600

Cross_Reference:

Citation_Information:

Title: Areas Susceptible to Groundwater Contamination

Data_Quality_Information:

Lineage:

Source_Information:

Type_of_Source_Media: None

Source_Contribution:

ASGWC created from ASGWC95 by adding the new Vashon data received from UW. ASGWC is a scientific data set as opposed to CARA which is a political/policy response to the scientific dataset of ASGWC95 (and other datasets as well). So they both will be kept.

Process_Step:

Process_Description:

ASGWC Created from ASGWC95 by adding the new Vashon data received from UW. ASGWC is a scientific data set as opposed to CARA which is a political/policy response to the scientific dataset of ASGWC95 (and other datasets as well). So they both will be kept.

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: King County

Contact_Person: constance carlson

Contact_Position: GIS Analyst

Contact_Voice_Telephone: 206 296-4425

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 0

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD 1983 HARN StatePlane Washington North FIPS 4601 Feet

Lambert_Conformal_Conic:

Standard_Parallel: 47.5

Standard_Parallel: 48.73333333333333

Longitude_of_Central_Meridian: -120.8333333333333

Latitude_of_Projection_Origin: 47.0

False_Easting: 1640416.666666667

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.00025

Ordinate_Resolution: 0.00025

Planar_Distance_Units: foot_us

Geodetic_Model:

Horizontal_Datum_Name: D North American 1983 HARN

Ellipsoid_Name: GRS 1980

Semi-major_Axis: 6378137.0

Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: PLIBRARY.ENVIRO.xxxx880288

Entity_Type_Definition: Polygon attribute table

Entity_Type_Definition_Source: ESRI

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature Geometry

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features

Attribute:

Attribute_Label: OBJECTID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: GEOL_TYPE

Attribute_Definition: Geology type

Attribute_Definition_Source: King County

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Qw

Enumerated_Domain_Value_Definition:

Wetland Deposits, peat and alluvium, poorly drained and intermittently we annually Grades into unit Qyal

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qvt

Enumerated_Domain_Value_Definition:

Till-Compact diamict containing subrounded to well-rounded clasts, glacially transported and deposited. Includes minor stratified fluvial deposits. Generally forms an undulating surface a few meters to a few tens of meters thick. In ice-marginal areas and where covered by thin layer of recessional outwash, contact with recessional-outwash or ice-contact deposits (Qvr or Qvi) is gradational.

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qvrl

Enumerated_Domain_Value_Definition: Silt-dominated lowland lacustrine depositis

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qvr

Enumerated_Domain_Value_Definition:

Recessional outwash deposits. Stratified sand and gravel, moderately to well sorted, and well-bedded silty sand to silty clay deposited in proglacial and ice-marginal environments.

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qvlc

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qvi

Enumerated_Domain_Value_Definition: Ice-contact deposits

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qva

Enumerated_Domain_Value_Definition: Advance outwash deposits

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qpogf

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qpog

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qpof

Enumerated_Domain_Value_Definition:

coarse-grained deposits -Sedimentary deposits of pre-Olympia interglaciation age (Pleistocene)

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qpft

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qpdc

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qos

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qoal

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qf

Enumerated_Domain_Value_Definition: Alluvial fan depositis (Holocene)

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qb

Enumerated_Domain_Value_Definition: Beach deposits (Holocene)-Loose sand deposited by wave action

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: Qal

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: af

Enumerated_Domain_Value_Definition_Source: King County

Attribute:

Attribute_Label: POT_G

Attribute_Definition:

1 character code for the susceptibility as defined by geology type (High, Medium & Low)

Attribute_Definition_Source: King County

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: H

Enumerated_Domain_Value_Definition: High as defined by geology type

Enumerated_Domain:

Enumerated_Domain_Value: M

Enumerated_Domain_Value_Definition: Medium as defined by geology type

Enumerated_Domain:

Enumerated_Domain_Value: L

Enumerated_Domain_Value_Definition: Low as defined by geology type

Attribute:

Attribute_Label: POT_G_CD

Attribute_Definition:

number code for the POT_G code (High = 2.0, Medium = 1.00, Low = 0.00)

Attribute_Definition_Source: King County

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 2.00

Enumerated_Domain_Value_Definition: High = 2.00

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: 1.00

Enumerated_Domain_Value_Definition: Medium = 1.00

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: 0.00

Enumerated_Domain_Value_Definition: Low = 0.00

Enumerated_Domain_Value_Definition_Source: King County

Attribute:

Attribute_Label: GW_DEPTH

Attribute_Definition: Depth of Groundwater (in feet)

Attribute_Definition_Source: King County

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: H

Enumerated_Domain_Value_Definition: High is <25'

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: M

Enumerated_Domain_Value_Definition: Medium is in between High and Low

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: L

Enumerated_Domain_Value_Definition: Low is >75'

Enumerated_Domain_Value_Definition_Source: King County

Attribute:

Attribute_Label: POT_D

Attribute_Definition:

1 character code for the susceptiblity as defined by depth to groundwater (High, Medium & Low)

Attribute_Definition_Source: King County

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: H

Enumerated_Domain_Value_Definition: High = 2.00

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: M

Enumerated_Domain_Value_Definition: Medium = 1.00

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: L

Enumerated_Domain_Value_Definition: Low = 0.00

Enumerated_Domain_Value_Definition_Source: King County

Attribute:

Attribute_Label: Shape.area

Attribute:

Attribute_Label: POT_D_CD

Attribute_Definition:

Number code for the POT_D code (Hight = 2.00, Medium = 1.00 or Low = 0.00)

Attribute_Definition_Source: King County

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 2.00

Enumerated_Domain_Value_Definition: High = 2.00

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: 1.00

Enumerated_Domain_Value_Definition: Medium = 1.00

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: 0.00

Enumerated_Domain_Value_Definition: Low = 0.00

Enumerated_Domain_Value_Definition_Source: King County

Attribute:

Attribute_Label: POT_S

Attribute_Definition:

1 character code for the susceptiblilty as defined by soil type (High, Medium or Low).

Attribute_Definition_Source: King County

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: H

Enumerated_Domain_Value_Definition: High = 2.00

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: M

Enumerated_Domain_Value_Definition: Medium = 1.00

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: L

Enumerated_Domain_Value_Definition: Low = 0.00

Enumerated_Domain_Value_Definition_Source: King County

Attribute:

Attribute_Label: POT_S_CD

Attribute_Definition:

Number code for the POT_S code (Hight = 2.00, Medium = 1.00 or Low = 0.00)

Attribute_Definition_Source: King County

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 2.00

Enumerated_Domain_Value_Definition: High = 2.00

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: 1.00

Enumerated_Domain_Value_Definition: Medium = 1.00

Enumerated_Domain_Value_Definition_Source: King County

Enumerated_Domain:

Enumerated_Domain_Value: 0.00

Enumerated_Domain_Value_Definition: Low = 0.00

Enumerated_Domain_Value_Definition_Source: King County

Attribute:

Attribute_Label: Shape.len

Attribute:

Attribute_Label: D_GW

Attribute_Definition: Range of Ground Water depth.

Attribute_Definition_Source: King County

Attribute:

Attribute_Label: SUSCP_SUM

Attribute_Definition:

The total of adding of the three susceptibility categories as follow: POT_G + POT_D + (0.25 * POT_S). The possible range of values for this field is 0.00 to 4.50.

Attribute_Definition_Source: King County

Attribute:

Attribute_Label: SUSCEPT

Attribute_Definition:

1 character code for the total susceptibility as defined by SUSCP_SUM (High, Medium or Low)

Attribute_Definition_Source: King County

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: KCGIS Center

Contact_Person: Cheryl Wilder

Contact_Position: Data Sales Coordinator

Contact_Address:

Address_Type: mailing and physical

Address: 201 S Jackson St, Suite 700

City: Seattle

State_or_Province: WA

Postal_Code: 98104

Country: US

Contact_Voice_Telephone: 206-263-5220

Resource_Description: /plibrary2/enviro/shapes/polygon/asgwc.shp

Distribution_Liability:

King County disclaims any warranty of use of any digital product or data beyond that for which it was designed.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ESRI Shapefile

Digital_Transfer_Option:

Fees:

Contact KCGIS Client Services for the cost of reproduction - <http://www.kingcounty.gov/operations/GIS/ClientServices.aspx>

Metadata_Reference_Information:

Metadata_Date: 20141213

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: King County Dept. of Natural Resources & Parks

Contact_Person: Ken Rauscher

Contact_Position: Senior GIS Analyst

Contact_Address:

Address_Type: mailing and physical

Address: 201 South Jackson Street, Suite 706

City: Seattle

State_or_Province: WA

Postal_Code: 98104

Country: US

Contact_Voice_Telephone: 206-296-1922

Contact_Electronic_Mail_Address: firstname.lastname@kingcounty.gov

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time