COOPERATIVE LEVELING PROJECTS

Pierce County Public Works

During this 2007 project, Pierce County Public Works, Survey Section performed regional leveling across the county to fill gaps in monumentation. During this project, they established a 2nd Order, Class I orthometric elevation on the THUN Station’s antenna reference point PID DF8481 and NGS designation THUN: Thun Airfield in Section 27, Township 19 North, Range 4 East, Willamette Meridian, Pierce County, Puyallup, Washington, latitude 47° 06' 21.01001" North, longitude 122° 17' 18.41650" West, elevation 142.878 meters (ellipsoid) and 165.062 meters (orthometric).

Washington State Department of Transportation

The Washington State Dept. of Transportation, Geodetic Survey Section also performed many leveling projects during 2006-2008 with a listing of a portion of those projects as follows:

Grand Mound ‘GRDM’ (Completed)

During this 2007 project, WsDOT established a 2nd Order, Class I orthometric elevation on the GRDM WSRN Station’s antenna reference point PID DJ4303 and NGS designation GRDM ARP in Section 11, Township 15 North, Range 3 West, Willamette Meridian, Thurston County, Washington, latitude 46° 47’ 43.733171” North, longitude 123° 01’ 21.29155” West, elevation 31.080 meters (ellipsoid) and 52.311 meters (orthometric).

Raymond PBO Station ‘P415’ (Incomplete)

During this 2007 project, WsDOT established a 2nd Order, Class I orthometric elevation on reference monument outside the enclosure to P415 PBO station. The station’s antenna reference point PID is DH4093 and is designated by NGS as WHGOLFCRS_WA2004 CORS ARP in Section 31, Township 14 North, Range 8 West, Willamette Meridian, Grays Harbor County, Washington, latitude 46° 39 21.55015” North, longitude 123° 43’ 47.45801” West, elevation -15.091 meters (ellipsoid).

Chimacum ‘CHCM’ (Complete)

During this 2007 project, WsDOT established a 2nd Order, Class I orthometric elevation on the CHCM WSRN Station’s antenna reference point PID DI8467 and NGS designation Chimacum CORS ARP in Section 14, Township 29 North, Range 1 West, Willamette Meridian, Jefferson County, Washington, latitude 48° 00’ 38.20755” North, longitude 122° 46’ 33.06047” West, elevation 20.674 meters (ellipsoid) and 42.415 meters (orthometric).

Darrington ‘DARI’ (Complete)

During this 2007 project, WsDOT established a 2nd Order, Class I orthometric elevation on the DARI WSRN Station’s antenna reference point PID DJ9200 and NGS designation DARI CORS ARP in Section 14, Township 32 North, Range 9 East, Willamette Meridian, Snohomish County, Washington, latitude 48° 15’ 37.7110001” North, longitude 121° 36’ 55.918068” West, elevation 147.214 meters (ellipsoid) and 167.271 meters (orthometric).

Tumwater Hill PBO Station ‘TWHL”

During this 2005 project, WsDOT established a 2nd Order, Class I orthometric elevation on the TWHL PBO Station’s antenna reference point PID AJ7208 and NGS designation TWHL_PNGA_WA2001 CORS ARP in Section 27, Township 18 North, Range 2 West, Willamette Meridian, Thurston County, Washington, latitude 47° 00’ 47.24305” North, longitude 122° 55’ 22.29322” West, elevation 107.630 meters (ellipsoid) and 128.947 meters (orthometric).

North Seattle ‘SSHO’ (Complete)

During this 2008 project, WsDOT established a 2nd Order, Class I orthometric elevation on the SSHO WSRN Station’s antenna reference point PID DJ9210 and NGS designation SSHO CORS ARP in Section 5, Township 25 North, Range 4 East, Willamette Meridian, King County, Washington, latitude 47° 40’ 56.26282” North, longitude 122° 18’ 54.533877” West, elevation 74.469 meters (ellipsoid) and 98.179 meters (orthometric).

Lake Cushman ‘ CUSH’ (Complete)

During this 2008 project, WsDOT established a 2nd Order, Class I orthometric elevation on the CUSH WSRN Station’s antenna reference point PID DK4485 and NGS designation CUSH CORS ARP in Section 5, Township 22 North, Range 4 West, Willamette Meridian, Mason County, Washington, latitude 47° 25’ 24.0223” North, longitude 123° 13’ 11.66681” West, elevation 217.383 meters (ellipsoid) and 238.354 meters (orthometric).

West Seattle ARP (Complete)

During this 2008 project, WsDOT established a 2nd Order, Class I orthometric elevation on the West Seattle antenna reference point in Section 31, Township 24 North, Range 4 East, Willamette Meridian, King County, Washington, latitude 47° 31’ 25” North, longitude 122° 20’42” West, elevation 137.061 meters (orthometric).