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Soils tests and seismic data: Examples of Scientist and/or research papers listing soils samples at "Ryer Island" by Steamboat Slough when the samples were really taken on "Long Point Island", based on the latitude and longitude data also provided with the soils samples. The result is that many other reports are compiled and published, each time reporting the soils test conducted on Long Point Island as if the soils tests were from the REAL Ryer Island. This can have an important and expensive impact on the residents and businesses of Ryer Island, because incorrect seismic data may lead to incorrect seismic hazard mapping which results in insurance pricing based on the incorrect data. The same report has been referenced for reports on potential levee failure in case of earthquakes and/or floods also. See for yourself: go to the California mapping website and put in coordinates: http://www.conservation.ca.gov/CGS/Pages/Index.aspx
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| The following examples are real-life instances showing why the correct Delta Island names need to be used consistently: PAGE UNDER CONSTRUCTION Also see GPS conflicts and Links | |
1995 Data Collection,
study and map labeled Long Point Island as "Ryer
Island"  |
1995 data
and samples report Note the map,
coordinates used and summary of Ryer Island data with reference to
ROE Island. Data and map were used in 1999 report by Unruh,
etc. |
| This report published January 2006 details the location soil samples were taken. The map and latitude/longitude data shows samples were taken on Long Point Island next to Roe Island. However, the written summary refers to Ryer Island. This report and its data has been cited at least 20 times in other similar documents | Digital Compilation of Thrust and Reverse Fault Data for the Northern California Map Database: Collaborative Research with William Lettis & Associates, Inc., and the U.S. Geological Survey. January 2006. Report link. Note pages 4, 13 and 14. It is clear the "Ryer" this report is talking about is the one next to Roe Island in the Suisun Bay area. Data sourse lists Unruh,J.R and Hecto,S (1999) |
| Summary with reference in 2005 to the same Ryer Island-Suisun Bay data |
http://www.lettis.com/docs/NEHRP_workshop 2005/Unruh_FY05NEHRP_Res_Sum.pdf |
| Pacific Petroleum Geologist November 2006 newsletter feature article about Seismic Thrust reports about "Ryer" island but the data was from Long Point Island next to Roe Island |
http://psaapg.org/pdf/20061101_newsletter_web.pdf See page 9 |
| Hydrodynamic and
Suspended-Solids Concentration Measurements in Suisun Bay,
California, 1995. but reported in 1999 which related to Ryer
Island-Suisun Bay ane referred to in many different reports related
to the current plans for the OTHER Ryer Island, bordered by
Steamboat and Cache Sloughs. Cut and paste the links provided. Note that some of the documents may have been removed from the government website or the sites get "updated" and the documents are moved elsewhere on their sites
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Page 3 of the introduction
shows a map of the location of the soils tests.
"Ryer" is the label but Long Point Island is the actual physical
location. Page 5 gives coordinates for the island the
sample was taken from: http://pubs.usgs.gov/wri/wri014086/wrir01-4086.pdf The following are just a few of the agencies that use the data when compiling the following documents:
http://permanent.access.gpo.gov/waterusgsgov/
http://ca.water.usgs.gov/abstract/sfbay/
http://www.rivermodeling.com/References/
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