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RECORD O� F SU� VEY MOUNTAIN HOUSE NEIGHBORHOOD "F" BENCHMARKS � Y R' S TA TE M E N T
<br /> The following NAVD88 benchmark elevations were derived by differential leveling and referenced to `��"� vt`-
<br /> p control points "MH2 & "MH3": This map correctly represents a survey made by
<br /> MOUNTAIN HOUSE COMMUNITY SERVICES CES DISTRICT me or under my direction in conformance with the
<br /> Name Elev. Description. Location requirements of .the Professions! Land. Surveyors' Act
<br /> GEODETIC 8c VERTICAL M ON U M EN TATI ON SURVEY, BMI 75.41' Brass Disk NW Corner - Tradition St. & Mascot Blvd. at the request of The Mountain House Community
<br /> PREDOMINATELY LOCATED IN THE NORTHWESTERLY BM2 61.69' Brass Disk NW Corner - De Anza Blvd. & Mascot Blvd. Services District in August, 2003..
<br /> PORTION O F T 2SR `t E M D La & M BM3 61.18' Brass:Disk NW Corner - Mtn. House Pkwy. & Mascot Blvd.
<br /> • • : BM4 54.73' Brass Disk NW Corner - Mtn. House Pkwy & Wickland Cross.
<br /> CVBMS 55.74' Brass Disk NW Corner - De Anza Blvd. & Wickland Cross. Q � w tI
<br /> SAN JOAQUIN COUNTY, CALIFORNIA 5ti 5�
<br /> BM6 50.91 Brass,Disk SW Corner - Mtn. House Pkwy. & Amaudo Blvd. JOHN PAUL
<br /> A BM7 51.91' Brass Disk SW Corner - De Anza Blvd. &. Arnaudo Blvd. GNIPP o rHN PAUL GNIPP, P.L.�( 7698
<br /> 0 __J Exp.12-31-04 ;o ""BM8 60.62' Brass Disk SW Corner - Providence St. & Amaudo Blvd. . Date: _ 12-31 -2004
<br /> q STOCKTON "CNDR" (CORS) 'y f
<br /> .c >' No.7698 Q`- „� 2,, J
<br /> GRID N: 2149796.362 FT SURVEYOR'S NARRATIVE F o� CAS l
<br /> Z i GRID E: 6337039.369 FT
<br /> 0 4� �;' NAD83 LATITUDE. 37'5347.04318"N (2002.0) OVERVIEW
<br /> W c t�� NAD83 LONGITUDE: 121'16'42,53063"W (2002.0)
<br /> GR NAD83 NORTH VELOCITY_ 0.014 FT/YR The purpose of this survey is to firmly establish NAD83 horizontal and NAVD88 vertical datums for ' -�
<br /> 613 NA083 EAST VELOCITY:-: 0.033 FT/FT/YR
<br /> the Mountain House Community Services District MHCSD together with the construction of COUNTY
<br /> � O ' I
<br /> Q,6• NAD83 UP VELOCITY:-0.002 FT/YR �' ( )� g C VAN TYCEJ R VEYQR � STATEN EN
<br /> / " precise, stable, high quality horizontal and vertical survey control monmentatnon.
<br /> / MH1 SET GEODETIC WELL MONUMENT
<br /> (See Monutnentation Note) This map has been examined in accordance with Section
<br /> GRID N: 2114029:031 FT 8766 of the Professional Land Surveyors' Act this
<br /> PRECISION day of � �a� 2004.
<br /> � o
<br /> LATITUbE: 37 47 45 7 FT <.: y
<br /> GRID E. 6258:'155.41 PC LAq
<br /> ':81873°'N The mean precision for the network baseline vectors is 1:3,670,800 ata 95% liner confidence level. pN Ds
<br /> LONGITUDE: 121'33 01.63433"W
<br /> � The minimum baseline precision is 1:949,150 and the maximum baseline precision is 1:14;627,040.
<br /> I ELLIPSOID HEIGHT:-:65.210'
<br /> NAVD88 ELEV.: 40.271' THOMAS R. FLINN R.C.E. 23341 0 -�
<br /> NAD83 NORTH VELOCITY: 0.020 FT YR EPOCH DATE County Surveyor, Registration expiration date: 12-31-05 No. 4440
<br /> NAD83 EAST VELOCITY:-0.034 FT YR Expires
<br /> a9 �R
<br /> The final adjustment was constrained to the NAD83 Epoch 2002.0 coordinates on the CORS 9 8ct
<br /> °?> stations LLNL SITE "S3.00" and STOCKTON CORS CNDR". The GPS observations were made , s9'
<br /> D 934 1?{D HS3665 N.G.S. BENCHMARK DESK RECORDERS STATEMENT: nF CA�`F0�
<br /> ( ) in August of 2003. Epoch 2002.0 was chosen to remain. consistent with the current published values
<br /> (See N.G.S. Recovery Sheet)
<br /> Iof said CORS stations, and annual velocities are provided.
<br /> GRID N 2109852.789 FT
<br /> '� 1,11 E 6282884.768 FT Filed this day of 2.004, at M.
<br /> LATiTURE 37'47''05.05236"IV MONUIVIENTATION in Book of Surveys, at P e at the request o the
<br /> c LONGITUDE: 121'32'02.13840"W Mountain House Community Services District.
<br /> ELLIPSOID HEIGHT:-50.477 '.FT Three(3) monuments were newly constructed by Condor Earth Technologies (to strict NGS
<br /> NAVD.$$ ELEV.: 46.02',8, FT
<br /> a�. standards according to the instructions in [Smith 1996]); for the MHCSD. The monument types are Fee: •
<br /> NAD83 NOE2 VD88- 48 80. ET (NOT ACCEPTED)
<br /> .-
<br /> ;:. NAD83VFER 'N �TH VELOCITY.- 0.021 ET YR 3/4" aluminum alloy rods in a geodetic greased sleeve and in a concrete encased 6" PVC monument DOC Ia z004--0T8115?0
<br /> NAD83 EAST:VELOCITY:-0:034 FT YR 04/14/2004 03:36P Fee:7.00
<br /> well, said alloy rods were driven to refusal (approximately 15 feet deep with a powerful electric Page 1 of 1
<br /> I GARY FREEMAN
<br /> 1 " �" roto-hammer) "
<br /> Recorded official Records
<br /> hammer) and topped by a compression fit stamped 3 1/4 aluminum disk.
<br /> E � a in
<br /> I...,, gM8`, _ BM7 '61.06 : . f Assessor-Recorder-County Clerk county RafWSan
<br /> FREEMANJoaquin
<br /> Paid b SHOWN ON DOCUME T
<br /> Assessor-Recorder-County Clerk
<br /> N
<br /> GPS OBSERVATIONSv
<br /> B •
<br /> h' `'' The GPS data was processed b , WAVE the GPS single-baseline processor in Trimble Geomatics
<br /> " " p Y g p
<br /> -, BM4BENCHMARKS
<br /> -�
<br /> _...w_�� SEE. NTN. HO S NEIGHBORH OD F ���� De utVIII
<br /> N F
<br /> I t s .�- / p Y
<br /> 6+ i C E r O E EVA T! 11- %C,�.,Ox;. Office (TCO): In order to realiz: precise GPS baselines, the Primary Control poi M'11I1 was
<br /> cG t fir. F,I i iV I , r
<br /> occupied for two independent 6 hour sessions and processed against said "S300" and "CNDR" CORS BASIS OF BEARINGS
<br /> {
<br /> 1 F1 ; stations. The Secondary Control Points '"MH2", "MH3" and "D 934" were occupied for two
<br /> I �J._.' i Ifi B _ independent sessions with a minimum observation time of 2 hours per session and processed against
<br /> Grid azimuth established by G.P.S. and referenced to the California Coordinate
<br /> BW41
<br /> BMS " p �" �F p pSystem Zone 3, NAD83 EPOCH DATE 2002.0. Final Network Adjustment
<br /> MH2 SET GEODETIC WELL MONUMENT control point MH1 .
<br /> (See. Monumentat'ron Note) constrained in Latitude and Longitude to Continuously Operating Reference
<br /> GRID N: 2103261.460 FT GEOID MODEL, GEOID99 Station (CORS), "LLNL SITE S300" and "STOCKTON CORS CNDR" (A 35.5
<br /> ' C14o�
<br /> GRID E: 6263401;880 FT " The National Geodetic Survey "Geoid99" model was used to convert GPS derived ellipsoid heights kilometer/22 mile baseline). Distances shown on this survey are represented at
<br /> 07 ai ti� ��O LATITUDE: 37 45 59.94550 ,N to the NAVD88 orthometric heights (sea level elevations)provided in this survey. Differential levels "grid" values and converted to U.S. Survey Feet. To obtain "ground" distance
<br /> LONGITUDE: 121'31 54.79154 W
<br /> h 6 ELLIPSOID HEIGHT.- -43.061 FT were run between the new control monuments to verify the model's accuracy, throughout the divide "grid" distance by combined scale factor of 0.99993260; (calculated at the
<br /> NAVD88 .ELEV.: 62.315 FT MHCSD. geodetic coordinates of control point "MH I").
<br /> t,;, t,,) NAD83 NORTH VrILOCITY: 0.022 FT/YR
<br /> NAp;83 EAST;VELOCITY:-0.034�',FT/YR
<br /> ORTHOMETRIC HEIGHTS(NAVD88 ELEVATIONS) LLNL SITE "S300" - L1 phase center Epoch 2002.0
<br /> M GEODE
<br /> � '> H3"��$ET.� TiC WELL MONUMENT �, �� ,� ," "" ,� ", "" 37"3959.41082"
<br /> rftation Note) The orthometric heights of control points "MH MI12 , MH3 and D 934 were propagated latitude = N
<br /> (See Monume
<br /> + from the epoch date 2002.0 anterina phase center ellipsoid height of LLNL SITE "S300" along with longitude = 121°33'29.7'1039" W
<br /> GRID N: 2099826.894 FT
<br /> GRID E: 6258.708.047 FT LEGEND: the application of Geoid99, together with the published erthometric NAVD88 elevation of 250.25
<br /> I LATITUDE: 374525.47492,,N feet, per 1st Order, Class II N.G.S. benchmark "L 1259" (PID HS4075) located along the California STOCKTON GOR "CNDR" L1 phase center Epoch 2002.0
<br /> LONGITUDE., 121032"52.7678511 W SET GEODETIC WELL MONUMENT Aqueduct. Two independent, one hour GPS sessions were conducted and processed between "S300" latitude = 37053'47.04318" N
<br /> ELLIi'SOID HEIGHT: 15.355 F `�jj ., 0
<br /> N`AVD,$ ELEV : 120.588 FT (SEE MONUMENTATION NOTE) and "L 1259" having a resulting baseline processing Route Mean Square (RMS) statistic of 0.022 feet longitude = 121°16'42.53063" W
<br /> i NAD83 NORTH VELOCITY: 0.024 FT YR p FD. 2" BRASS BENCHMARK DISK (0.007 meters). It should be noted that with the exception of the benchmarks along the California
<br /> J
<br /> NAD83 EAST VELOCITY: -0.034 FT/YR Aqueduct, this area of the "Central Valley" is severely lacking in NAVD88 survey control. The Final Network Adjustment showed a computed azimuth rotation of 0.035
<br /> ;> LLNL SITE "S300- (CORS) FD. "CORS" GPS STATION
<br /> (SEE BASIS OF BEARINGS) arc-seconds, accompanied by a formal error of 0.017 are-seconds. The
<br /> GRID N: 2066883:049 FT VELOCITIES adjustment showed a solved network scale of 0.99999994 with a 2-Sigma, A
<br /> GRID E: 6255368:715 FT FD. N.G.S. BENCHMARK DISK " " "CNDR"
<br /> , An obligatory step in the publication of these MHCSD network coordinates is the associated Posteriori error of 0.00000009. The grid distance between 5300 and CNDR
<br /> NADB� LATITUDE: 3739 59:410.82 N ((2002.0 (TOP CONCRETE R.R. ABUTMENT)
<br /> NAD83 LONGITUDE: 121'33'29.71039"rhl (2oO2�0) publication of velocities (annual displacements) for each control point. Over time the proximity of is 116,381.76 feet (35,473.23 meters), scale on this distance amounting to 0.007
<br /> ELLIPSOID HEIGHT: 1628.691' L1 PHASE CENTER Mountain Douse to the active faults at tectonic boundaries in California requires that NAD83 feet (0.002 meters).
<br /> NAVD88 ELEV.: 1732.913 L1 PHASE CENTER 2000 0 4000 coordinates in this network must take velocities into account. In short, the NAD83 coordinates will CONDOR EARTH TECHNOLOGIES)INC. JOB#:4125C
<br /> NAD83 NORTH VELOCITY: 0.028 FT/YR change over time. Velocities for the CORS stations "S300" and "CNDR" have been rovided from ztss3 Brion Lone - P.O. sox 3905
<br /> g P Sanorq, cn 95370 DATE:MAR 2S; 200
<br /> VELOCITY: -0.034 FT/YR SCALE IN FEET (203) 53a-0339 fox 532-077
<br /> 4 1
<br /> NAD83 UPS VELOCITY: -0.016 FT/YR N.G.S. data sheets, and horizontal velocities for the new control points, based on the CORS
<br /> http://www.condoreorth.com' 'DRAWN BY: JPG.
<br /> D.Q. SHEET 5.1 velocities, have been calculated. [CONDO •e-maid: sohoro�c'ondoreorth.com
<br /> NU.
<br /> FILE: 4125C-RS
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