Central Valley Chapter
California Land Surveyors Association

Promoting the professional practice of land surveying in the California Central Valley.
Serving the greater Merced, Stanislaus and San Joaquin County Area."


San Joaquin County Summer 2012 Chip Seal Project

Several volunteers from the CLSA Central Valley Chapter have been working since the beginning of September to help San Joaquin County tie in CL monuments before this summer's chip seal is applied.

So far our research has produced 130 CL monument references for this summer's projects. Of that amount, we've currently found and tied about 30 or 40 CL monuments (everything we could find that was reasonably accessible from the surface).

We dug up one section corner under 2 feet of road base and 3 inches of pavement. We also saved another major monument that had been paved over with 3 inches of asphalt in the last few years. (There was a lot of chipping on that one.)

We searched for 6 or 7 additional monuments that were also under 3 inches of asphalt and 2 to 3 feet of road base. Several of these corners were aliqout. All of the corners on about 2 or 3 miles of one road were in this condition. We didn't have time to dig these up, but we know they are in place under the road.

Still, we feel good about what we've been able to save and preserve for future generations.

Here are some fun pictures from our work so far

We've also got photos of all the monuments we've tied.

We are starting to get the process for this project nailed down. We've just about got a high-quality control network in place for the monument ties, we've started keeping research logs today, and we're storing field notes and field photos.

As soon as Landon is done processing the static data from the ties, we will post a link to the loop closure report, network adjustment reports, static GPS files, and TBC project files.

All of the GPS data, notes, field photos, and research logs will be freely accessible online.

Keith is going to review Landon's final Record of Survey/Corner Record products when our field work is complete. Landon is going to start work on a centerline monument GIS for San Joaquin County next week. All of this data will be freely downloadable as well.

So far, we estimate we've logged 64 volunteer hours in the field and 20 volunteer hours in the office, at an approximate value of $17,000.00. KSN has graciously supported the project with equipment, a field truck, and flexible work hours during the chip seal season.

Hopefully we can get the County to adopt some of our process for next years chip seal projects.

Central Valley Chip Seal Project Results

Chapter News:

Holiday Social Event

Wednesday, December 6th

Our Newsletter "The Prism" September 2017

California Surveyor: "Issue 185"


BPELSG New corner_record_instructions

"It is important to understand that effective April 1, 2017, all new Corner Record submittals must use the new form."

BPELSG Example CBT Examination Questions:

BPELSG Bulletin:Fall 2017

New in the Library:

Tuolumne County - Updated Record Maps and Corner Records, added Mineral Surveys
San Joaquin County - added Filed Map Footprints
updated February 2016 Guide to the Preparation of Maps
updated ROS, PM, M&P, Corner Records
Madera County - updated Record maps
Santa Clara County - updated Record maps and Corner Records
Sacramento County - added link to Geographical Map Index
Fresno County - updated record maps
Stanislaus County - updated record maps

CLSA Chapter Website of the Year - 2012-2014