S.F. Bay Coastal Waste Water Treatment Plants

Frequently-anticipated questions:

What does this data set describe?

Title: S.F. Bay Coastal Waste Water Treatment Plants
Abstract:
This dataset shows the footprints of wastewater treatment plants (WWTP's) in the San Francisco Bay that are potentially vulnerable to a 100-year coastal flood with a 1.4 meter sea level rise.
Supplemental_Information:
The footprints of the WWTP's were digitized over aerial imagery from NAIP (2005) and Google Earth.
Point data for WWTP's were downloaded from the EPA's PCS (Permit Compliance System) database at: <http://www.epa.gov/waterscience/ftp/basins/gis_data/>
  1. How should this data set be cited?

    Heberger, Matthew, and Herrera, Pablo, 2009, S.F. Bay Coastal Waste Water Treatment Plants: The Impacts of Sea-Level Rise on the California Coast, Pacific Institute, Oakland CA.

    Online Links:

    This is part of the following larger work.

    Heberger, Matthew, Cooley, Heather, Gleick, Peter, and Herrera, Pablo, 2009, The Impacts of Sea-Level Rise on the California Coast: Pacific Institute, Oakland CA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -122.629417
    East_Bounding_Coordinate: -121.834933
    North_Bounding_Coordinate: 38.254012
    South_Bounding_Coordinate: 37.415862

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 2008
    Currentness_Reference: Data reference

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data (polygon)

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (37)

    2. What coordinate system is used to represent geographic features?

      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 10
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -123.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000000
      Ordinates (y-coordinates) are specified to the nearest 0.000000
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Datum_Name: North American Vertical Datum of 1988
      Altitude_Distance_Units: meters
      Altitude_Encoding_Method: Attribute values

  7. How does the data set describe geographic features?

    SF_Bay_WWTP_Polygon

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    NPDES

    FAC_NAME

    OWNERSHIP

    NEW_STATUS

    PRETREAT

    REC_POTW

    PCS_LAT

    PCS_LONG

    LATLONG_AC

    EF_LAT

    EF_LONG

    BFIPS

    STATE_ID

    PERM_TYPE

    ACTIVE

    MAJOR_ID

    IND_CLASS

    PERMIT_DAT

    EPA_REG

    STATE

    CITY

    COUNTY

    LOC_NAME

    ADDRESS1

    FAC_CITY

    FAC_STATE

    ZIP_CODE

    TELE

    RIV_BASIN

    CU

    STREAM_SEG

    REC_WATER

    STREAM_MIL

    PERM_AGENC

    LIMIT_ID

    BSOURCE

    FLOW_RATE

    BSEG

    PERM_ISSUE

    INACTIVE

    PERMIT_EXP

    PERMIT_EFF

    PERMIT_MOD

    BCU

    MAJOR_STAT

    ADDRESS2

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Point data for WWTP's were downloaded from the EPA's PCS (Permit Compliance System) database at: <http://www.epa.gov/waterscience/ftp/basins/gis_data/>

  3. To whom should users address questions about the data?

    Pacific Institute
    c/o Matthew Heberger
    Research Associate/GIS Manager
    654 13th Street
    Oakland, CA 94612
    USA

    (510) 251-1600 (voice)
    (510) 251-2203 (FAX)
    mheberger@pacinst.org

    Hours_of_Service: 9:00 AM to 5:00 PM

Why was the data set created?

Locate WWTP's vulnerable to a 100-year coastal flood with a 1.4 meter sea-level rise.

How was the data set created?

  1. From what previous works were the data drawn?

    (source 1 of 1)
    Institute, Pacific, WWTP_point.shp.

    Online Links:

  2. How were the data generated, processed, and modified?

    (process 1 of 1)
    The land surrounding the San Francisco Bay was scanned at a scale of 1:10,000 for WWTP's. Where points were already located, the footprint was digitized. In a number of cases, WWTP's were located with no associated point. These locations were also outlined and identified via telephone communication with associated communities.

  3. What similar or related data should the user be aware of?

    .

    This is part of the following larger work.

    ,.

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    The attributes were derived directly from the EPA PCS database. <http://www.epa.gov/waterscience/ftp/basins/gis_data/>
    In the case where treatment plants were located, but did not exist in the database, the footprint was simply outlined with no attributes.

  2. How accurate are the geographic locations?

    The locations of the WWTP's were checked against NAIP imagery (2005) and Google Earth, which often has higher resolution imagery. The footprints of the WWTP was then outlined at a scale of 1:10,000.

  3. How accurate are the heights or depths?

    N/A

  4. Where are the gaps in the data? What is missing?

    Data set has been visually inspected.

  5. How consistent are the relationships among the observations, including topology?

    The dataset is topologically correct.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
None. Data are freely downloadable and available for use in GIS and mapping subject the use constraints below.
Use_Constraints:
The data are freely redistributable with proper metadata and source attribution. Please reference the Pacific Institute as the originator of the dataset in any future products or research derived from these data. This information is being made available for informational purposes only. Users of this information agree by their use to hold blameless the State of California, and its respective officers, employees, agents, contractors, and subcontractors for any liability associated with its use in any form. This work shall not be used to assess actual coastal hazards, insurance requirements, or property values and specifically shall not be used in lieu of Flood Insurance Studies and Flood Insurance Rate Maps issued by the Federal Emergency Management Agency (FEMA).

  1. Who distributes the data set? (Distributor 1 of 1)

    Pacific Institute
    c/o Matthew Heberger
    Research Associate/GIS Manager
    654 13th Street,
    Preservation Park
    Oakland, CA 94612
    USA

    (510) 251-1600 (voice)
    (510) 251-2203 (FAX)
    mheberger@pacinst.org

    Hours_of_Service: 9:00 AM to 5:00 PM
  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    The data are freely redistributable with proper metadata and source attribution. Please reference the Pacific Institute as the originator of the dataset in any future products or research derived from these data.
    This information is being made available for informational purposes only. Users of this information agree by their use to hold blameless the State of California, and its respective officers, employees, agents, contractors, and subcontractors for any liability associated with its use in any form. This work shall not be used to assess actual coastal hazards, insurance requirements, or property values and specifically shall not be used in lieu of Flood Insurance Studies and Flood Insurance Rate Maps issued by the Federal Emergency Management Agency (FEMA).

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 24-Feb-2009
Metadata author:
Pacific Institute
c/o Matthew Heberger
Research Associate/GIS Manager
654 13th Street,
Preservation Park
Oakland, CA 94612
USA

(510) 251-1600 (voice)
(510) 251-2203 (FAX)
mheberger@pacinst.org

Hours_of_Service: 9:00 AM to 5:00 PM
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.9.6 on Thu Feb 26 11:55:12 2009