68-eldo Posted November 11, 2006 Share Posted November 11, 2006 I found the disk for TU0636 in apparently good condition except for one thing that might be easily overlooked. I was suspicious of this mark when I went to look for it because I know a little history of the area. There has been a major road realignment project done since 1969. The problem is to prove the mark was disturbed. DESCRIBED BY COAST AND GEODETIC SURVEY 1969 1.65 MI NE FROM EWA. 0.8 MILE NORTHEAST ALONG RENTON ROAD FROM THE POST OFFICE AT EWA, THENCE 0.85 MILE NORTH ALONG FORT WEAVER ROAD, IN THE NORTH CORNER OF THE LOWER CONCRETE BASE FOR A LAVA ROCK MONUMENT WITH IRON PLAQUE COMMEMORATING SITE OF FIRST ARTESIAN WELL, 23.0 FEET NORTHEAST OF THE CENTER LINE OF THE ROAD, 3.9 FEET SOUTH OF THE NORTHWEST CORNER OF A 12-FOOT-LONG LAVA ROCK RETAINING WALL WHICH IS IN BACK OF THE MONUMENT, 4.5 FEET NORTHEAST OF THE SOUTHWEST EDGE OF THE BASE, 53.7 FEET NORTHWEST OF TELEPHONE POLE 140, AND ABOUT LEVEL WITH THE ROAD. According to the description the disk was placed in the Northeast corner of the base of the historical marker. I found the mark in the southwest corner at hand held coordinates N 21° 21.614 W 158° 01.777. That is an error of 1194ft from the listed coordinates but that is scaled so the error there could have been caused when it was scaled off. If you look at the TerraServer map and zoom in you will get the 1983 topo map. In that you can see that Fort Weaver Road is a two lane road that wanders through the town of Honouliuli on its way to Ewa Beach. TU0636 is marked as BM 25 on the map. If you look at the same area on the Topozone map you get a newer version and you can see Fort Weaver Road is now an extension of Kunia Road and has become a 4 lane divided highway that makes a much straighter line to Ewa Beach and bypasses the town of Honouliuli. A portion of the original road is still in use and named Old Fort Weaver Road. The distances from the center lines of the roads are no longer valid. There is no lava rock retaining wall within 100 ft. of the monument. The only remaining thing to measure to is power pole 140. I found the power pole on an abandoned fragment of the original road. This area is very overgrown. Hand held coordinates for power pole 140 is N 21 21 30.8, W 158 01 49.50. According to GeoCalc that is 667.5 ft from the hand held coordinates of where I found the disk. That’s a big difference from the 53.7 feet as listed in the description. What do you think? Is this one destroyed as far as a surveyor would be concerned? Is this sufficient proof the mark has been moved? Quote Link to comment
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