National Geodetic Survey, Retrieval Date = APRIL 24, 2010 PC0834 *********************************************************************** PC0834 DESIGNATION - BLACK ECC PC0834 PID - PC0834 PC0834 STATE/COUNTY- OR/DOUGLAS PC0834 USGS QUAD - FISH CREEK DESERT (1997) PC0834 PC0834 *CURRENT SURVEY CONTROL PC0834 ___________________________________________________________________ PC0834* NAD 83(1991)- 43 09 35.92547(N) 122 27 51.07954(W) ADJUSTED PC0834* NAVD 88 - 1876.7 (meters) 6157. (feet) VERTCON PC0834 ___________________________________________________________________ PC0834 LAPLACE CORR- 10.09 (seconds) DEFLEC09 PC0834 GEOID HEIGHT- -22.53 (meters) GEOID09 PC0834 HORZ ORDER - FIRST PC0834 PC0834.The horizontal coordinates were established by classical geodetic methods PC0834.and adjusted by the National Geodetic Survey in October 1991. PC0834 PC0834.The NAVD 88 height was computed by applying the VERTCON shift value to PC0834.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) PC0834 PC0834.The Laplace correction was computed from DEFLEC09 derived deflections. PC0834 PC0834.The geoid height was determined by GEOID09. PC0834 PC0834; North East Units Scale Factor Converg. PC0834;SPC OR S - 167,753.606 1,340,285.774 MT 0.99989462 -1 20 37.7 PC0834;SPC OR S - 550,372.72 4,397,263.04 iFT 0.99989462 -1 20 37.7 PC0834;UTM 10 - 4,778,719.799 543,559.657 MT 0.99962334 +0 21 59.5 PC0834 PC0834! - Elev Factor x Scale Factor = Combined Factor PC0834!SPC OR S - 0.99970930 x 0.99989462 = 0.99960395 PC0834!UTM 10 - 0.99970930 x 0.99962334 = 0.99933275 PC0834 PC0834: Primary Azimuth Mark Grid Az PC0834:SPC OR S - BLACK ECC AZ MK 062 45 42.4 PC0834:UTM 10 - BLACK ECC AZ MK 061 03 05.2 PC0834 PC0834|---------------------------------------------------------------------| PC0834| PID Reference Object Distance Geod. Az | PC0834| dddmmss.s | PC0834| PC0837 UMPQUA HOT SPRINGS LOH APPROX.18.8 KM 0303336.0 | PC0834| CD9078 BLACK ECC AZ MK 0612504.7 | PC0834| CD9079 BLACK RM 1 4.670 METERS 14811 | PC0834| CD9073 BLACK RM 1 14816 | PC0834| PC0826 RATTLESNAKE MTN LOT APPROX. 6.7 KM 1503621.2 | PC0834| PC0833 BLACK ROCK LOOKOUT HOUSE 5.739 METERS 20212 | PC0834| PC0832 BLACK 3.414 METERS 25351 | PC0834|---------------------------------------------------------------------| PC0834 PC0834 SUPERSEDED SURVEY CONTROL PC0834 PC0834 NAD 83(1986)- 43 09 35.92635(N) 122 27 51.09527(W) AD( ) 1 PC0834 NAD 27 - 43 09 36.49000(N) 122 27 46.94200(W) AD( ) 1 PC0834 NGVD 29 (07/19/86) 1875.5 (m) 6153. (f) VERT ANG PC0834 PC0834.Superseded values are not recommended for survey control. PC0834.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. PC0834.See file dsdata.txt to determine how the superseded data were derived. PC0834 PC0834_U.S. NATIONAL GRID SPATIAL ADDRESS: 10TEN4355978719(NAD 83) PC0834_MARKER: DH = HORIZONTAL CONTROL DISK PC0834_SETTING: 66 = SET IN ROCK OUTCROP PC0834_SP_SET: IN DRILL HOLE IN ROCK OUTCROP PC0834_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD PC0834+STABILITY: POSITION/ELEVATION WELL PC0834 PC0834 HISTORY - Date Condition Report By PC0834 HISTORY - 1938 MONUMENTED CGS PC0834 HISTORY - 1953 SEE DESCRIPTION CGS PC0834 PC0834 STATION DESCRIPTION PC0834 PC0834'DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (ACT) PC0834'STATION IS LOCATED ON BLACK ROCK (MOUNTAIN) IN THE UMPQUA PC0834'NATIONAL FOREST, ABOUT 4-1/2 MILES AIR LINE DUE S OF BIG CAMAS PC0834'RANGER STATION. STATION IS 11 FEET E FROM TRIANGULATION PC0834'STATION BLACK. PC0834' PC0834'STATION IS MARKED BY A STANDARD DISK SET IN A LARGE BOULDER, PC0834'AS DESCRIBED IN NOTE 2, ABOUT 15 FEET N OF THE NE CORNER OF THE PC0834'LOOKOUT HOUSE AND 11 FEET E FROM TRIANGULATION STATION BLACK PC0834'ESTABLISHED IN 1904. THE MARK IS STAMPED BLACK ECC. 1938. PC0834' PC0834'REFERENCE MARK NO.1 IS A COPPER BOLT SET IN A LARGE BOULDER PC0834'ABOUT 15 FEET SE OF STATION. REFERENCE MARK NO.2 IS TRIANGULATION PC0834'STATION BLACK ABOUT 11 FEET W OF STATION STAMPED U.S.C. AND PC0834'G.S. V.A. 6164. PC0834' PC0834'AZIMUTH MARK IS A STANDARD DISK SET IN A LARGE BOULDER AS PC0834'DESCRIBED IN NOTE 12A, ON THE SECOND ROCKY PEAK 0.3 MILE NE OF PC0834'STATION, STAMPED BLACK ECC. 1938. PC0834' PC0834'STATION IS REACHED FROM CHEMULT ON U.S. HIGHWAY 97 BY GOING PC0834'S 10 MILES TO JUNCTION WITH STATE HIGHWAY 230. TURN LEFT ON PC0834'STATE HIGHWAY 230 AND GO W FOR 15.0 MILES TO FORK. KEEP RIGHT PC0834'FORK ON STATE HIGHWAY 230 FOR 3.5 MILES TO FORK. THENCE RIGHT PC0834'FORK, GRAVEL ROAD, N, 0.35 MILE TO A SMALL STORE AT SE CORNER OF PC0834'DIAMOND LAKE. CONTINUE N ON E SIDE OF LAKE 3.0 MILES TO DIAMOND PC0834'LAKE LODGE. CONTINUE N ON CRESCENT LAKE ROAD 6.0 MILES TO FORK PC0834'AT SIGN BIG CAMAS R.S. 20 AND ANOTHER SIGN STATING THAT ROAD PC0834'TERMINATES AT BIG CAMAS RANGER STATION, 19 MILES DISTANT. PC0834'TAKE LEFT, STRAIGHT AHEAD FORK, AND FOLLOW W 18.0 MILES TO A PC0834'TRAIL TURNING SHARPLY TO LEFT, S, 0.15 MILE BEFORE REACHING PC0834'BIG CAMAS DISTRICT RANGER STATION. TURN S ON THIS TRAIL AND PC0834'FOLLOW 0.25 MILE TO ITS END AT EVA CREEK AND END OF TRUCK PC0834'TRAVEL. FOLLOW WELL GRADED TRAIL ADJACENT TO THE PHONE LINE PC0834'FOR 7.0 MILES TO A CAMPING PLACE AT SPRING IN A SADDLE, THENCE PC0834'TURN LEFT, NW, FOLLOWING SIGN TO LOOKOUT TOWER, ABOUT 1/2 PC0834'MILE TO SUMMIT AND STATION. PC0834' PC0834'PACK ANIMALS CAN BE OBTAINED FROM THE BIG CAMAS RANGER PC0834'STATION. 4-HOUR PACK. PC0834 PC0834 STATION RECOVERY (1953) PC0834 PC0834'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953 (HSC) PC0834'THE STATION WAS RECOVERED AS DESCRIBED BY A.C.T. IN 1938 AND ALL PC0834'MARKS WERE FOUND IN GOOD CONDITION AS DESCRIBED. STATION BLACK PC0834'1903, USED AS A REFERENCE MARK IN 1938, WAS TOO CLOSE TO POINT PC0834'ON. THE ORIGINAL DESCRIPTION IS ADEQUATE. PC0834' PC0834'HEIGHT OF STAND 46 INCHES.