2002-675159 RECORD OF SURVEY MAP NO. 17488
SURVEYOR'S NOTES: SHEET 1 OF 68
THE MAIN PURPOSE OF THIS SURVEY WAS TO PROVIDE AERIAL CONTROL TO
FACILITATE THE PRODUCTION OF DIGITAL ORTHOPHOTOGRAPHY ALONG AND RECORD OF SURV Y
COVERING THE SAN DIEGO COUNTY WATER AUTHORITY'S AREAS OF INTEREST.
IN ADDITION TO THIS ORIGINAL SCOPE, AS THE PROJECT PROGRESSED, THE OF
SCOPE OF WORK EXPANDED TO COVER THE CITY'S OF CARLSBAD, CHULA
VISTA, CORONADO, ENCINITAS, AND OCEANSIDE. THE SECONDARY PURPOSE A GEODETIC AND AERIAL CONTROL NET WORK
OF THIS SURVEY WAS TO ESTABLISH FIRST ORDER CONTROL THROUGHOUT THE
SAN DIEGO COUNTY WATER AUTHORITY'S JURISDICTION IN SAN DIEGO C OUNTY , STATE OF CALIFORNIA.
THOUGH THE STATIONS SHOWN HEREON WERE PLACED FOR THE CONTROL OF
AERIAL PHOTOGRAMMETRY, FIRST ORDER PROCEDURES WERE EMPLOYED FOR ALL
STATIONS WITH THE EXCEPTION OF THE "PHOTO IDENTIFICATION AERIAL
CONTROL" , THE "CITY OF CHULA VISTA CONTROL" , THIRTY SEVEN (37) OF
THE "PRE-MARKED AERIAL CONTROL" STATIONS, AND ONE (1) OF THE
"AIRBORNE GPS BASE STATIONS ". OF THE "PRE- MARKED AERIAL CONTROL"
SHOWN HEREON, ALL STATIONS ARE FIRST ORDER WITH THE EXCEPTION OF
STATIONS 1002, 1005, 1007, 1009, 1017, 1018, 1019, 1022, 1023,
1034, 1036, 1041, 1043, 1054, 1059, 1061, 1069, 1080, 1083, 1084,
1087, 1088, 1089, 1095, 1110, 1123, 1124, 1132, 1133, 1134, 1134A, _
1136, 1140, 1141, 1142, 3003, AND 3005. OF THE "AIRBORNE GPS BASE BASIS OF COORDINATES: COUNTY SURVEYOR S T
ATEMENT:
STATIONS" SHOWN HEREON, ALL STATIONS ARE FIRST ORDER WITH THE THE BASIS OF COORDINATES FOR THIS SURVEY IS THE CALIFORNIA
EXCEPTION OF STATION 9005. THESE STATIONS WERE ONLY SINGLE THIS MAP HAS BEEN EXAMINED IN ACCORDANCE WITH SECTION 8766 OF THE
COORDINATE SYSTEM, ZONE 6, 1983 DATUM, AS DEFINED BY SECTIONS
OCCUPIED OR ARE OF A CHARACTER LESS STABLE THAN THAT NECESSARY TO 8801 TO 8819 OF THE CALIFORNIA PUBLIC RESOURCES CODE. THE LAND SURVEYORS
ACT THIS y%. DAY OF A G/ &uST 2002.
BE CONSIDERED FIRST ORDER. REFERENCE FRAME USED FOR THIS SURVEY WAS THE NATIONAL SPATIAL
ALL STATIONS SHOWN AS "PRE- MARKED AERIAL CONTROL" AND it REFERENCE SYSTEM (NSRS) PROVIDED BY THE NATIONAL GEODETIC D
AIRBORNE GPS SURVEY. � � 3�
BASE STATIONS EXCEPTING THEREFROM THOSE STATIONS NOTED ABOVE,
WERE DOUBLE OCCUPIED. OF THESE 125 STATIONS, 21 (17 %) WERE TRIPLE O
PHILIP J. GIURBI
OCCUPIED. THESE OCCUPATIONS OCCURRED ON SEPARATE DAYS AT DIFFERING NO P.L.S. 4424 J
TIMES BETWEEN THE DATES OF MARCH 13, 2001 AND NOVEMBER 29, 2001. COUNTY SURVEYOR Exp. 9 -30-05
CUPATIONS VARIED IN DURATION OF TIME FROM 20 MINUTES TO 8 HOURS
COUNTY OF SAN DIEGO
WITH AN OVERALL AVERAGE OCCUPATION T I M E OF APPROXIMATELY 35 sN 4/1 LS4
MINUTES. ALL OBSERVATIONS WERE PERFORMED USING TRIMBLE DUAL F
FREQUENCY P -CODE GPS RECEIVERS WITH COMPACT L1 /L2 GEODETIC ANTENNAS
AND FIXED HEIGHT TRIPODS. ALL DATA WAS PROCESSED USING "GPSURVEY
V2.35 11 AND ADJUSTED USING " STAR* NET -PRO V6. 0. 23A" LEAST SQUARES
ADJUSTMENT PACKAGE. THE FINAL ADJUSTMENT INCLUDED 3429 GPS VECTORS
ACROSS 187 STATIONS. THE AVERAGE STANDARD DEVIATION FOR THE FIRST
ORDER STATIONS LISTED HEREON WAS 0.02 FEET IN BOTH THE NORTHING AND
THE EASTING AS CALCULATED FROM THE FINAL CONSTRAINED LEAST SQUARES
ADJUSTMENT. THE MAXIMUM STANDARD DEVIATION FOR ANY OF THESE
STATIONS WAS 0.05 FEET IN BOTH THE NORTHING AND THE EAST I NG SURVEYOR'S STATEMENT:
THE FINAL CONSTRAINED ADJUSTMENT INCLUDED 7 CONTINUOUSLY OPERATING THIS MAP CORRECTLY REPRESENTS A SURVEY MADE BY ME OR UNDER
REFERENCE STATION (CORS) SITES AND 3 It A" ORDER NATIONAL GEODETIC MY DIRECTION IN CONFORMANCE WITH THE REQUIREMENTS OF THE LAND
SURVEY MONUMENTS THROUGHOUT THE COUNTY. THE FINAL POSITIONS
DERIVED BY T H I S SURVEY, AND SHOWN IN THE TABLES HEREON, ARE BASED SURVEYOR'S ACT BETWEEN THE DATES OF MARCH 2001 AND NOVEMBER STATION
ACCESS NOTE:
2001 AT THE REQUEST OF THE SAN DIEGO COUNTY WATER AUTHORITY
ON THE NORTH AMERICAN DATUM OF 1983 (NAD83) (2000.35 EPOCH) , AS . STATIONS SHOWN HEREON MAY BE WITHIN PRIVATE OR OTHERWISE
DERIVED FROM THE NATIONAL GEODETIC SURVEY AND CALIFORNIA SPATIAL CONTROLLED ACCESS PROPERTY, PERMISSION MAY BE REQUIRED TO
REFERENCE CENTER'S PUBLISHED POSITIONS FOR THE CONSTANT OPERATING L4NO GAIN ACCESS.
REFERENCE STATION (CORS) SITES B ILL, MONP, MVFD, OGHS, PL03, PMOB,
AND S103, AND FROM THE NATIONAL GEODETIC SURVEY'S PUBLISHED
POSITIONS FOR THE A ORDER CONTROL STATIONS aX5297, DX5303, AND { Exp. 12- ez I Z- - z
TIES WERE ALSO MADE TO THE " A" AND "B" ORDER CONTROL STATIONS * �°
X0 ALAN D. FRANK, P.L.S.
AD9371, DC 1313, DC 1428, DC2101, DC2127, DC2129, DC2136, DX3916, ` .71 7 172 Op OAS ®Fv` EXPIRES DECEMBER 31, 2003
DX5291, AND DX5302. HOWEVER, THESE 10 STATIONS WERE PUBLISHED IN
VARYING EPOCH DATES (1991.35 AND 1998. 50) AND NOT PUBLISHED IN THE
2000.35 EPOCH, THEREFORE, THE NATIONAL GEODETIC SURVEY'S HORIZONTAL
TIME DEPENDENT POSITIONING PROGRAM (HTDP) V2.6 WAS USED TO UPDATE
SAID POSITIONS TO THE 2000.35 EPOCH. AS STATED WITHIN THE
SURVEYOR'S NOTES OF RECORD OF SURVEY 16810, THE ESTIMATED
UNCERTAINTY OF THE HTDP MODEL IS APPROXIMATELY 1CM PER YEAR OF
EPOCH CHANGE. THIS WOULD EQUATE TO ±0.30 FEET FOR THE UPDATED
1991.35 EPOCH POSITIONS AND ±0.06 FEET FOR THE 1998.50 EPOCH
POSITIONS. THESE UPDATED POSITIONS WERE INCLUDED IN THE NETWORK
ADJUSTMENT, BUT WERE NOT HELD FIXED. THE STATIONS AND UPDATED
POSITIONS WERE USED FOR POSITIONAL VERIFICATION PURPOSES ONLY. THE
UPDATED POSITIONS MATCHED THE SURVEY RESULTS WITH AN AVERAGE
VARIANCE OF 0.04 FEET IN THE NORTHING AND -0.05 FEET IN THE MAP SHEET INDEX RECORDER'S STATEM ENT
EAST I NG. THE MAXIMUM VARIANCE SEEN WAS 0.15 FEET IN THE NORTHING
AND -0.18 FEET IN THE EAST I NG AT 1991.35 EPOCH STATIONS. THE SEE SHEET 01 OF 68 FOR STATEMENTS AND SURVEYOR'S NOTES. FILE NO. �DOZ��
7J� /✓
APPROXIMATE SHIFT FROM THE 1991.35 EPOCH TO THE 2000.35 EPOCH IS SEE SHEET 02 OF 68 FOR SHEET NUMBERING SCHEME. FILED THIS 09 DAY
OF 2002.
0.96 FEET NORTH AND 0.81 FEET WEST. SEE SHEET 03 OF 68 FOR OVERALL NETWORK DIAGRAM. AT g2 O'CL K ._j_ IN BOOK OF RECORD OF
SURVEY MAPS
SEE SHEETS 04 THROUGH 37 OF 68 FOR STATION LOCATIONS. AT PAGE AT THE REQUEST OF ALAN D. FRANK.
THE VERTICAL POSITIONS SHOWN IN THE TABLES HEREON ARE BASED ON THE SEE SHEETS 38 THROUGH 41 OF 68 FOR POSITIONAL DATA.
NORTH AMERICAN VERTICAL DATUM OF 1988 (NAVD88) AS DERIVED FROM THE SEE SHEETS 42 THROUGH 68 OF 68 FOR POINT DESCRIPTIONS AND
NATIONAL GEODETIC SURVEY'S GEOIDAL UNDULATION MODEL "GEOID99" AND PHOTOS. GREGORY J. SMITH
HE NATIONAL GEODETIC SURVEY'S PUBLISHED VERTICAL POSITIONS ON THE
COUNTY RECORDER /CLERK
FIR ST, SECOND, AND THIRD ORDER VERTICAL CONTROL STATIONS DC1313,
FEE: 142.00 COUNTY OF SAN DIEGO
DC1428, DC2136, DX5291, DX5297, DX5302, DX5303, AND DX5304. NO
ACCURACY CLAIM IS MADE FOR THE VERTICAL COMPONENT OF THIS SURVEY
OTHER THAN ITS SUFFICIENCY TO SUPPORT DIGITAL ORTHOPHOTOGRAPHY WITH
2 -FOOT CONTOUR INTERVALS.
BY: h w ��
DEPUTY COUNTY RECORDER
RECORD OF SURVEY MAP NO, IL7 4 8
SAN DI GO COUNTY G OD TIC A
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