BERG-JOHANSEN Erik <br />From: Gunnar Schlieder <gunnar@geoscience-or.com> <br />Sent: Wednesday, August 12, 2015 2:16 PM <br />To: BERG-JOHANSEN Erik; Bill Blix; WOSTMANN Jan (SMTP); Stephanie Midkiff; CLINGMAN <br />Bill W <br />Subject: Fw: Laurel Ridge PUD stuff <br />Follow Up Flag: Follow up <br />Flag Status: Flagged <br />All: I am forwarding this email from Bill Clingman, Senior GIS specialist at LCOG. The issue pertains <br />to the registration (or relationship) of the different layers in the GIS system. The way I read it, the tax <br />lot map system is the primary system, which is likely spatially best controlled. The "City Limits" layer <br />is likely of similar spatial control quality as it has large elements controlled by Metes and Bounds lines <br />created during annexations. The Metro Plan Diagram has the least accurate relationship to the State <br />Plane Coordinate system and, therefore, to the other layers. Streets on the Metro Plan Diagram are <br />represented by single lines, if represented at all. Therefore, there is, of course, some wiggle <br />room. The question is how much. The wiggle-room obviously does not permit the independent <br />rotation of some of the layers of the system and not others. However, horizontal sliding in some <br />direction or another may be possible within the "slop" created by the single-line street <br />representations. <br />In this particular case, the applicant is working with a 4-lane highway in an area with an interchange <br />and embankments, which makes for wide right-of-way. According to the tax lot map, the right of-way <br />width on the SE trending leg of the highway in this vicinity varies from 240 to 300 feet!. And the <br />applicant is treating the system as an isolated map, independent of the entire other portions of the <br />map. Given that streets with much narrower rights-of-way are included as single lines on the Metro <br />Plan Diagram, the "slop" in the relative positions of the Diagram streets and the tax lot street <br />boundaries is likely much less in many of the portions of the diagram. For instance, the Rights-of- <br />Way in the Downtown street grid are 66 feet wide, which constrains the relative position of the Metro <br />Plan Diagram much more. The ENTIRE diagram has been aligned by LCOG to the tax lot base <br />rather than a tiny snippet from the Diagram's SE quadrant... <br />Cheers <br />Gunnar <br />Forwarded Message <br />From: CLINGMAN Bill W <BCLINGMAN@lcog.org> <br />To: Gunnar Schlieder <gunnar@geoscience-or.com> <br />Sent: Wednesday, August 12, 2015 1:08 PM <br />Subject: RE: Laurel Ridge PUD stuff <br />Laurel Ridge Record (Z 15-5) Page 991 <br />