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cr19_0357CORNER RECORD Agency Index CR 190325 Document Number 20/q — 635 City of UNINCORPORATED AREA County of RIVERSIDE , California Brief Legal Description T. 2 S., R. 17 E., SEC. 18, S.B.M.; "MWD BM 11H 1931" CORNER TYPE COORDINATES (Optional) N. 2305353.46 E. 6867619.21 ❑ Government Corner ❑ Control Elevation 966.39 18 ❑ Meander ❑ Property Units Metric ❑ U.S. Survey Foot ❑ Rancho Other Horizontal Datum CCS83 (NRS 2007) X Zone ZONE 6 Epoch Date 2017.50 Date of Survey MAY 22, 2019 vertical Datum NAVD88 © Complies with Public Resources Code §§8801-8819 ® Complies with Public Resources Code §§8890-8902 PLS Act Ref: ❑ 8765(d) © 8771 ❑ 8773 ❑ Other: Corner/ ® Left as found ❑ Established ❑ Rebuilt ❑ Pre -Construction Monument: ❑ Found and tagged ❑ Reestablished ❑ Referenced ❑ Post -Construction Narrative of corner identified and monument as found, set, reset, replaced, or removed: © See sheet #2 for description(s) : (SEE REVERSE) BASIS OF BEARINGS: THE BEARINGS SHOWN HERON ARE BASED UPON THE CALIFORNIA COORDINATE SYSTEM OF 1983 (NRS 2007), CCS83, ZONE 6, 2017.50 EPOCH IN ACCORDANCE WITH THE CALIFORNIA PUBLIC RESOURCES CODE SECTIONS 8801-8819; SAID BEARINGS ARE BASED LOCALLY UPON FIELD OBSERVED TIES TO THE CALIFORNIA SPATIAL REFERENCE NETWORK. AN ELEVATION OF 966.39 WAS DETERMINED AT THE FOUND MONUMENT "MWD BM 11H 19311, TO CALCULATE A COMBINATION FACTOR OF 0.9999784 ALL DISTANCES SHOWN HEREON, ARE IN TERMS OF THE US SURVEY FOOT. ALL DISTANCES SHOWN HEREON, ARE GROUND DISTANCES. SURVEYOR'S STATEMENT C3" MC HOLAS D. This Corner Record was prepared by me or under my direction in conformance with ELLM the Professional Land Surveyors' Act on MAY 24 2019 LS 9320 Signed �L"`'` y P.L.S.mo--- 9320 COUNTY SURVEYOR'S STATEMENT This Corner Record was received / ( 201 and exaNed 7�� Signed P.L.S. or. No Title _ Caonf( : {&p,(JG+S� X County Surveyor's Comment BPELSG-2016 Page 1 oft 04025 No. 8488 Exp. 12-31-20 Document Number ZO(q - 035 Y� ncv Index C.K7&U�IZO ELEVATIONS SHOWN AS "DERIVED COH88" ARE GPS DERIVED CALIFORNIA ORTHIMETRIC HEIGHTS OF 1988 (COH88) BASED ON NGS GEOID 12B. "HNPS" a�6� 82 ^. 09- o a/ 650'+/ r 4550 j MWD CRA CONTROL Fn 1 112" IRON PIPF WITH CONCRETE COLLAR AND 2" BCM STAMPED "MWD 4550+00", PER MWDFB 1001-051132 N = 2304397.21 E = 6860996.37 N81 47'()2.3.E 6691.67' "HNPS" ELEV. = 1022.23 (LEVELED COH88) CSRC STATION PER MWDFB 1001-06/119 N = 2200703.788 E = 6748610.6917 LAT = 33°42'18.007809" LONG = 115°38'07.160678" COMBINED FACTOR: 0.99991308 PURPOSE OF SURVEY MWD BM 11 H 2n- FD. 931 ' �! FD. 3" STD. MWD BCM STAMPED "MWD I OF SOUTHERN CALIFORNIA BENCH MARK 11 H 1931 ",SET IN 12"X 12" CONCRETE PAD 2" ABOVE GROUND. PER MWDFB 1001-30/055 N = 2305353.46 E = 6867619.21 ELEV. = 966.39 (DERIVED COH88) ELEV = 966.3 (NA VD88) PER NGS PID DW0448 ELEV. = 964. 452 (DISTRICT DATUM) PER CRA BENCH MARK BOOK* THE PURPOSE OF THIS CORNER RECORD IS TO DOCUMENT THE FOUND MONUMENT "MWD BM 11 H 1931". IN A REPORT TITLED "FIRST ORDER CONTROL SURVEYS FOR THE COLORADO RIVER AQUEDUCT", UNKNOWN DATE, METROPOLITAN WATER DISTRICT (MWD) SENIOR INSPECTOR WILLIAM L. SANDERS JR., DESCRIBES HOW FIRST -ORDER HORIZONTAL AND VERTICAL CONTROL WAS ESTABLISHED FOR THE CONSTRUCTION OF THE COLORADO RIVER AQUEDUCT (CRA). IN REGARDS TO VERTICAL CONTROL, THE REPORT STATES THAT MONUMENT "MWD BM 11 H" WAS USED AS THE PRIMARY BENCH MARK AND CONSTRUCTION OF THE CRA IS BASED UPON ITS ELEVATION; 964.452' (DISTRICT DATUM). "A COPY OF THE REPORT AND THE CRA BENCH MARK BOOK IS ON FILE AT THE METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA SURVEY OFFICE LOCATED IN LA VERNE, CA. BPELSG-2016 Page 2 of 2 "IMPS" CSRC NETWORK STATION "IMPS" — IDENTICAL N = 2366617.619 E = 6895958.147 LAT = 34°0927.213574" LONG = 115°08'42.312648" COMBINED FACTOR: 0.99996877 N s�,=a ~ RhC9 4507 MWD CRA CONTROL akn�'` 4� FD. 1 112" IRON PIPE WITH CONCRETE "MWD z 0r ry� COLLAR AND 2" BCM STAMPED CRA CONTROL RBF 2005", PER MWDFB 1001-161158 N = 2308496.60 NOT TO SCALE E = 6861773.38 ELEV. = 1022.33 (DERIVED COH88) a�6� 82 ^. 09- o a/ 650'+/ r 4550 j MWD CRA CONTROL Fn 1 112" IRON PIPF WITH CONCRETE COLLAR AND 2" BCM STAMPED "MWD 4550+00", PER MWDFB 1001-051132 N = 2304397.21 E = 6860996.37 N81 47'()2.3.E 6691.67' "HNPS" ELEV. = 1022.23 (LEVELED COH88) CSRC STATION PER MWDFB 1001-06/119 N = 2200703.788 E = 6748610.6917 LAT = 33°42'18.007809" LONG = 115°38'07.160678" COMBINED FACTOR: 0.99991308 PURPOSE OF SURVEY MWD BM 11 H 2n- FD. 931 ' �! FD. 3" STD. MWD BCM STAMPED "MWD I OF SOUTHERN CALIFORNIA BENCH MARK 11 H 1931 ",SET IN 12"X 12" CONCRETE PAD 2" ABOVE GROUND. PER MWDFB 1001-30/055 N = 2305353.46 E = 6867619.21 ELEV. = 966.39 (DERIVED COH88) ELEV = 966.3 (NA VD88) PER NGS PID DW0448 ELEV. = 964. 452 (DISTRICT DATUM) PER CRA BENCH MARK BOOK* THE PURPOSE OF THIS CORNER RECORD IS TO DOCUMENT THE FOUND MONUMENT "MWD BM 11 H 1931". IN A REPORT TITLED "FIRST ORDER CONTROL SURVEYS FOR THE COLORADO RIVER AQUEDUCT", UNKNOWN DATE, METROPOLITAN WATER DISTRICT (MWD) SENIOR INSPECTOR WILLIAM L. SANDERS JR., DESCRIBES HOW FIRST -ORDER HORIZONTAL AND VERTICAL CONTROL WAS ESTABLISHED FOR THE CONSTRUCTION OF THE COLORADO RIVER AQUEDUCT (CRA). IN REGARDS TO VERTICAL CONTROL, THE REPORT STATES THAT MONUMENT "MWD BM 11 H" WAS USED AS THE PRIMARY BENCH MARK AND CONSTRUCTION OF THE CRA IS BASED UPON ITS ELEVATION; 964.452' (DISTRICT DATUM). "A COPY OF THE REPORT AND THE CRA BENCH MARK BOOK IS ON FILE AT THE METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA SURVEY OFFICE LOCATED IN LA VERNE, CA. BPELSG-2016 Page 2 of 2