U.S. EPA Contaminated Site Cleanup Information (CLU-IN)


U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Disclaimer, Privacy, and Security Notice

  1. This World Wide Web (WWW) site is provided as a public service by the Technology Innovation and Field Services Division of the Environmental Protection Agency. It is operated under contract by Environmental Management Support, Inc.
  2. Information presented on this WWW site is considered public information and may be distributed or copied. The U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce these documents, or allow others to do so, for U.S. Government purposes. These documents may be freely distributed and used for non-commercial, scientific, and educational purposes. Commercial use of the documents available from this server may be protected under U.S. and Foreign Copyright Laws. When individual documents on this server have different copyright conditions, it will be noted in those documents.
  3. Links to websites outside the U.S. EPA website and non-EPA documents are for the convenience of the user. The Standards of Ethical Conduct do not permit the U.S. EPA to endorse any private sector website, product, or service. The U.S. EPA does not exercise any editorial control over the information you may find on these websites and within these documents. These links are being provided consistent with the intended purpose of this website.
  4. When you come to this website to browse, you do so anonymously. By default, EPA does not collect personally identifying information about you. We collect only summary information [see below] about the numbers of individuals who visit our website and what those individuals look at. This computer system uses industry-standard software to create summary statistics, which are used for assessing what information is of most and least interest, determining technical design specifications, and identifying system performance or problem areas.
  5. The information above is also collected by Google Analytics on behalf of EPA. Google Analytics uses first-party persistent cookies, which the government classifies as Tier 2 persistent cookies. Tier 2 persistent cookies do not collect any personally identifiable information, but only those metrics listed above. In addition, persistent cookies can identify return visitors to www.clu-in.org by setting a small file in internet Web browsers. Unless you first opt-out (see below), the Google Analytics code used will automatically set a persistent cookie in the browser of the computer you are using to access www.clu-in.org.

    Traffic statistics for www.clu-in.org are only reported to us anonymously and in the aggregate, and no information provided by Google Analytics is traceable to any specific individual. We use the information that we automatically collect to measure the number of visitors to the different areas of our sites, and to help us make our pages more useful to visitors. This includes analyzing Web traffic to determine the types of devices and browsers that view CLU-IN Web pages most often and the level of demand for specific pages and topics of interest.

    You can opt-out by changing the cookie settings in your browser. For instructions on how to disable cookies in some of the most popular Web browsers, visit http://www.usa.gov/optout_instructions.shtml. Google also provides an Opt-Out Browser Add-on for newer browsers: http://tools.google.com/dlpage/gaoptout. Opting-out will still allow you to obtain comparable information from the CLU-IN website.

    For more information about the federal government's use of persistent cookies, please refer to the Office of Management and Budget's (OMB) Memo Guidance for the Online Use of Web Measurement and Customization Technologies.
  6. Where identifying information is asked of you (such as to respond to an information request) that information is provided vountarily by you. It is used only for the stated purpose and is not made available for other purposes. By providing this information voluntarily, you are consenting to its collection for the stated purpose. See our notice of use.
  7. For site security and to ensure that this service remains available to all users, this computer system employs industry-standard methods to monitor network traffic and identify unauthorized attempts to upload data, change information, or otherwise cause damage. These unauthorized attempts are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986.
  8. No additional attempts are made to identify individual users or their usage habits.
  9. If you have any questions or comments about the information presented here, or would like to view all personally identifiable information that is in your name and currently stored in support of this website, please contact us through our Comments Page.
Example of Information Collected for Statistical Purposes

Below is an example of the information collected based on a standard request for a World Wide Web document:

1999-06-08 10:32:39 134.146.8.33 - W3SVC5
GET /products/costperf/default.htm - 200 22927 5204 80 HTTP/1.0
Mozilla/3.0+(Win95;+I)
+ASPSESSIONIDGQGGGRPQ=KFEOCAAALPCEDBMNJGLNMGJL
http://clu-in.org/remdtext.htm#descriptions

1999-06-08 10:32:39
The date and time of the request.
134.146.8.33 (or yyy.zzz.com)
The IP address (or host name) associated with the requestor (you as the visitor). Depending on the requestor's method of network connection, the IP address (or host name) may or may not identify a specific computer. Connections via many Internet Service Providers assign different IP addresses for each session, so the host name identifies only the ISP. The IP address (or host name) will identify a specific computer if that computer has a fixed IP address.
W3SVC5
The site name designated internally by the server for logging purposes. It informs the server that this particular request came through a website located on this server.
GET /products/costperf/default.htm
The location of the requested file.
200
The status code. 200 means the request was filled.
22927
The size of the requested file in bytes.
5204
The time required to complete the request in milliseconds.
80 HTTP/1.0
The port and protocol used to complete the request.
Mozilla/3.0
Identifies the type of browser software used to access the page, which indicates what design parameters to use in constructing the pages.
(Win95;+I)
Identifies the operating system used to access the page, which indicates what design parameters to use in constructing the pages.
+ASPSESSIONIDGQGGGRPQ=KFEOCAAALPCEDBMNJGLNMGJL
Identifies the session cookie being used by the server. This web site uses cookies to more accurately log both visits to the site and pages visitors view while on the website. The use of cookies enables us to improve our site based on how users navigate the site, as well as the length of their visits. These cookies are automatically deleted at the end of your session. EPA also permits the use of persistent cookies for the collection of Web metrics; however, CLU-IN does not collect any personally identifiable information about visitors to our Web pages.
http://clu-in.org/remdtext.htm#descriptions
Identifies the page which the user came from before visiting this page.

Requests for other types of documents use similar information. No other user-identifying information is collected.