Constant Communication with Client Adapt to Clients Needs Team Work Mission Planning and Point Management Guidelines for New Technologies and Implementations Good Food and Company

1. CITY GOALS - Expedite The Flow of Geodata to the Public by:
• Establishing horizontal and vertical positions on newly established
benchmarks throughout the City of Pismo Beach.
• Provide benchmark information to the Public via hard copy and as
a GIS layer.
• Incorporate new Geodata from the private sector into the City of
Pismo Beach's GIS.
• Use current staff to minimize cost.
HORIZONTAL AND VERTICAL CONTROL NETWORK

2. HORIZONTAL AND VERTICAL CONTROL NETWORKS
Past GPS Surveys – Santa Maria Valley GPS Network
 4 Survey Crews
4 GPS Receivers
Communications between Crews and Setup - CRITICAL
1 ½ hour GPS Static Sessions
Mission Planning for GPS observations
Nightime Operations
Static Session on Known HPGN Control Monuments
½ Million Dollar Investment - 1996

3. Record of Survey

4. SURVEY TEAM GOALS
Defendable, Accessible, Reliable - DAR
• Utilize existing standards and best practices in the Science of Geomatics, Traditional
Land Surveying, and GIS Mapping to produce High Quality mapping deliverables.
• Utilize technological advances in GPS and available online information for locating and
measuring points on the surface of the earth – CGPS/CORS data & RTN networks.
• Provide Primary Control tied to the latest Horizontal and Vertical Datums using California
standards for GPS measurements. (45 points total)
• Provide Secondary Control tied to newly established Primary Control using NGS standards
governing RTK/RTN procedures.
(145 points total)
• Provide Efficient and Cost Effective services and data to the City of Pismo Beach.
www.AGLSurveys.com

5. Horizontal Datum
 Horizontal accuracies to comply with California Public Resources Code 8856 having a
positional accuracy of two centimeters or better.
Benchmarks and GIS mapping referenced to the California Coordinate System 1983,
CCS83, (epoch 2011), Zone 5.
Vertical Datum
 Vertical accuracies to comply with California Public Resources Code 8858 having a
positional accuracy of five centimeters or better.
Benchmarks and GIS mapping referenced to the North American Vertical Datum of 1988
(NAVD88) through ties to established local benchmarks within the City of Pismo Beach.
GIS Data
GIS Layer containing the newly established benchmark locations incorporated into a
geodatabase along with attributes with spatial links to field notes and digital imagery for
each point.

6. Primary Control
 Primary benchmarks observed for 30
minutes using Trimble R8 model 3 GNSS
receiver and post-processed using
Trimble Business Center software
version 2.5 along with CORS stations
USLO, P516, and P513 .
 Least Squares adjustment processed
using Trimble Business Center software
version 2.5; Residuals printed and
included in the surveyor's report.
 45 Primary Control Points Located.

7. Secondary Control
 NGS Field Guidelines for RTK/RTN GPS
measurements followed.
http://www.ngs.noaa.gov/PUBS_LIB/NG
SRealTimeUserGuidelines.v2.0.4.pdf
 Secondary benchmarks observed for
(two) 3 minutes occupations using
Trimble R8 model 3 GNSS receiver and
post-processed using Least Squares
using Trimble Business Center software
version 2.5; Residuals printed and
included in the surveyor's report.
 145 Secondary Points Located.

8. Survey Field Notes

9. Least Squares Adjustment Report and Final Coordinate
Solution for Primary Control Benchmarks

10. GIS Survey Control Layer

11. GIS Layer

12. GIS Layer

13. Record of Survey

14.  Constant Communication with Client
 Adapt to Clients Needs
 Team Work
 Mission Planning and Point Management
 Guidelines for New Technologies and Implementations
 Good Food and Company

15. Victor M. Rasgado
Geomatics Lecturer/GIS Coordinator
HawCC
Email: victor@hawaii.edu
Phone: (808) 854-4820
Copyright ©2010 - 2014 Victor M. Rasgado