Measure. Model. Manage. Move.

See the
whole site.

From the first flight to the next field decision. GPSCS connects aerial mapping, terrain, drainage, machine control, and subsurface evidence in one picture.

Plan a Site Intelligence Pilot Explore what we do

One site. Six ways to understand it.

PUBLIC USGS / USDA DATA · NOT A GPSCS CAPTURE
LiDAR-derived surfaceDense terrain samples · public elevation data
DRAG TO ORBIT
Explore the connected site
CAPTURE / SURFACEA site you can move around.

A scan-style view of the LiDAR-derived USGS elevation model. These are terrain samples, not raw laser returns.

Public government terrain and imagery · vertical scale ×1.5. The drainage layer shows flow paths and ponding basins computed from this elevation model; rainfall, pipes, pumps and water depth are not modeled. Every underground layer shown here is simulated.

From air, to surface, to subsurface.

Five perspectives.
One connected site.

From the first flight to the file your crew uses in the field. GPSCS connects capture, analysis, subsurface evidence, and deliverables in one current site record.

GPSCS / SITE INTELLIGENCECONNECTED WORKFLOW

01 / AERIAL CAPTURE

Start with a clear picture.

Capture the terrain. Establish a baseline. See what changes.

Scan-style quarry terrain beneath a drone flight route and its gold flight-coverage area. Conceptual illustration.
  • Flight coverage
  • Surface capture
DELIVERABLES

Orthomosaic · Point cloud · Elevation model

Conceptual illustrations of the workflow.

One record. A clearer next step.The capture, the model, and the released file stay connected.

What we do

Nine services. One site record.

Every service produces deliverables that land in the same site record, so quantities, surfaces, and field files reference the same data and the same control.

Drone Topography and Site Mapping

Core service

RTK drone mapping, orthomosaics, terrain models, contours, and repeat monitoring.

  • Orthomosaic (GeoTIFF) and DSM/DTM
  • Contours and linework (DXF)
  • Point cloud (LAS/LAZ)
  • Repeat-flight change comparison

Volumes, Stockpiles, and Cut/Fill

Core service

Stockpile volumes, earthwork quantities, progress comparisons, and material movement.

  • Stockpile volume report with base surface and method
  • Cut/fill maps and quantities against design
  • Period-over-period change and movement
  • Inventory-date snapshots

CAD, Modeling, and Machine-Control Support

Quote required

Construction surfaces, grading models, machine-control files, field-ready exports, and custom modeling.

  • Design surfaces and grading models
  • Machine-control files in your system's format
  • Field-ready linework and stakeout exports
  • Custom modeling scoped per project

GPS/GNSS Field Support

Core service

Trimble and GNSS equipment support, calibration assistance, field troubleshooting, and construction positioning support.

  • Site calibration and localization assistance
  • Base and rover setup checks
  • Control point verification
  • On-site positioning troubleshooting

Drainage and Terrain Intelligence

Core service

Flow paths, low spots, drainage concerns, slope review, and terrain-based planning.

  • Flow-path and ponding maps from the terrain model
  • Slope and aspect review
  • Low-spot and catchment extents
  • Terrain-based screening, not a hydrologic design

Site Intelligence Dashboard

Pilot program

Centralized site data, surfaces, volumes, deliverables, field files, approvals, and audit history.

  • Site selector, map, and 3D terrain viewer
  • Current field files and revision history
  • QA and release status per deliverable
  • Roles, logged downloads, audit history

Bathymetry and Water-Related Mapping

Where applicable · Quote required

Visualize underwater or water-adjacent conditions where applicable.

  • Pond and pit-lake bottom surfaces where measurable
  • Shoreline and water-level context
  • Combined above- and below-water models
  • Scoped per site and access conditions

Core Samples and Geological Visualization

Pilot · research direction

Organize and view borehole, core, and geological information in relation to the site.

  • Borehole and core logs positioned on the site model
  • Cross-sections with candidate interpretations
  • Probability and uncertainty layers (research prototype)
  • Not a reserve estimate or a replacement for drilling

Safety and Field Awareness

Included with site intelligence

Use site data and visual context to help identify potential field concerns.

  • Slope and edge-proximity views
  • Haul-road and access context
  • Observation pins tied to location and date
  • Supports, does not replace, your safety program
Quote Required. Machine-control files, custom projects, and specialized engineering-related work are scoped and priced per request.
Scope of practice. GPSCS provides construction mapping, modeling, site intelligence, and machine-control support. It is not a substitute for a licensed land survey, civil engineer, geologist, or other licensed professional when one is legally required.

Research direction

See beneath the surface—probabilistically.

Beneath a site, the same measurement can support more than one geological explanation. GPSCS is designed to show those competing possibilities, combine them with borehole and field evidence, and communicate where uncertainty remains.

Explore the model

Simulated cores
A (west) → A′ (east)
QUARRY SURFACE · PUBLIC DATAPublic USGS / USDA surface, not a GPSCS capture · everything underground is simulated
Quarry surface · public data
A–A′Vertical scale ×1.5
Drag to orbit · + / − zoom · ← → rotate · Shift + ↑ ↓ tilt720 × 600 m model windowIllustrative research visualization. Not a certified geological reserve estimate or replacement for field verification.

Hypothetical cover / rubble Clay Competent rock (suitable material in this scenario) Weathered / fractured rock Dry gravel

Illustrative research visualization. Not a certified geological reserve estimate or replacement for field verification.
The terrain is public data; the 720 m ERT line, logs and probabilities below it are simulated, and no drilling location is proposed.

Walk through the evidence

Five steps, from measurement to a verification priority

Play the worked example, or explore the controls above.

Use Detailed section to hover or tap a cell. Both views use the same illustrative probability model.

Measurements constrain. They do not identify.

ERT resistivity does not uniquely identify lithology by itself. Similar electrical signatures can correspond to different geological conditions, so the view keeps several candidate sections alive instead of drawing one.

Evidence updates the picture.

Borehole logs, core observations, surface elevation, terrain geometry, and geological constraints enter as weights on the candidates. A candidate that contradicts a logged core loses weight; it is not silently deleted.

Uncertainty is shown, not hidden.

Translucent probability, competing interpretations, and hatched areas with insufficient coverage stay on screen. Where the system does not have enough information, the visualization says so.

Status. Subsurface decision support is an advanced research and prototype direction at GPSCS, shown here with public USGS surface elevation and USDA aerial imagery. LiDAR measures the surface; it does not reveal underground geology. The component reads a documented site-section schema so validated site data can be integrated later. Verification priorities are illustrative uncertainty scores, not validated drilling recommendations.

About this public-data example

Surface: USGS 3DEP project CA_AZ_FEMA_R9_Lidar_2017_D18. The nominal 1 m LiDAR-derived DEM was resampled to approximately 4 m; the display mesh is simplified further. This is a terrain surface, not a raw point cloud. Vertical datum and measurement accuracy have not been independently verified for engineering use.

Imagery: USDA NAIP photography, May 14, 2022. Elevation and imagery come from different acquisition dates and may not match where quarrying changed the surface. Both datasets are U.S. Government public-domain data: USGS 3DEP elevation and USDA NAIP imagery from 2022. GPSCS did not collect either dataset.

Demonstration: An unnamed aggregate quarry in central California, shown using public government data. No customer relationship or operator endorsement is implied. The 720 m simulated ERT line is confined to a selected excavation window. The thin rubble cover, candidate materials, ERT-like values and logs are invented for teaching; they do not describe verified geology or propose drilling. Simulated layers are drawn at a depth below the present excavated surface, so they follow the benches rather than true geological horizons. The 3D volume extends a 2D scenario across an illustrative 160 m width; cross-line geology is unmeasured. The scan view renders DEM samples, not raw laser returns.

Drainage: Flow paths and ponding basins are computed by the GPSCS drainage engine from this public elevation model and shipped with the page; where that dataset is unavailable the page falls back to a simplified in-browser downhill routing. Either way the layer shows terrain routing only: rainfall, water depth, pipes and quarry pumping are not modeled.

USGS elevation source ↗ · USGS / USDA imagery source ↗ · Reproducible source details · Attribution

The GPSCS platform

From site data.
To field-ready decisions.

A clear path from capture to release. Keep the model, the review, and the file your crew uses connected in one site record.

  1. Capture & upload

    Flight data, surfaces, and design files in one place.

  2. Validate & review

    Check control, coordinates, and quality before release.

  3. Release to the field

    One approved Current Field File for each surface.

  4. Track every revision

    Retain release notes, logged downloads, and the audit trail.

GPSCSSite workspace
Interactive preview · sample data
SAMPLE SITE A

North Pit

Sample capture12 Sep 2026Workspace roleReviewer

Site overview

Terrain, materials, and field evidence in context.

CONCEPTUAL MAP
Map layers
3 stockpiles2 sample boreholes1 open observation
Review before release. Trace every revision.Conceptual interface · fictional data

One current file.

Make the approved issue easy to find. Keep earlier revisions clearly marked.

A clear review trail.

See what has been checked, who reviewed it, and what still needs attention.

Traceable field use.

Connect every download to the exact revision the crew received.

Who we work with

Built for people who move material.

The same site record serves a single quarry and a multi-site operation. Pick your operation to see the problem we start with.

Aggregate producers

The problem
Inventory and reconciliation rest on stockpile volumes measured different ways, by different people, on different days.
How GPSCS helps
Repeat drone capture on a fixed schedule, one documented volume method, and a record of which flight produced each number.
Typical deliverables
Stockpile volume reports with base surfaces, orthomosaics, period-over-period change, inventory-date snapshots.
A good first pilot
One yard, one inventory date, volumes compared side by side with your current method.

Site Intelligence Pilot

Start with one site and one question.

A pilot is scoped around a question you need answered: an inventory, an earthwork balance, a surface the machines can run. It ends with a decision, not a slide deck.

  1. Scope

    We define the site, the question, the deliverables, and the coordinate system and control you already use.

  2. Capture

    RTK drone flight with ground control, plus a GNSS check on your existing control where available.

  3. Process

    Orthomosaic, terrain model, volumes or cut/fill, and any surfaces or files in scope.

  4. Review

    Deliverables pass internal QA, then your review. Nothing is marked current until it is approved.

  5. Operate

    Approved files are released to the field. The dashboard shows what is current and who downloaded it.

  6. Decide

    You see the results against your question and decide whether to continue, expand to more sites, or stop.

Formats

GeoTIFF orthomosaics and elevation rasters, LAS/LAZ point clouds, DXF/DWG linework, LandXML surfaces, CSV quantities, PDF reports. Machine-control formats by request (Quote Required).

Control and coordinates

Delivered in your project coordinate system. Ground control, checkpoints, and residuals are documented with every mapping deliverable.

Your data

Client sites and figures are not published or reused as marketing material. Access is by named user and role, and downloads are logged.

What we claim, and what we don't

  • We do provide construction mapping, modeling, site intelligence, and machine-control support with documented methods.
  • We do not replace a licensed land surveyor, civil engineer, geologist, or other licensed professional where one is legally required.
  • We do not present the subsurface visualization as a reserve estimate or as a substitute for drilling and field verification.
  • We do not promise outcomes. We document method, control, and residuals so you can judge each deliverable yourself.

Questions

Straight answers.

Is a GPSCS deliverable a legal survey?

No. GPSCS provides construction mapping, modeling, and site intelligence. Where a licensed land survey is legally required, it must come from a licensed surveyor. We work alongside licensed professionals and deliver in the control they establish.

Does the subsurface visualization replace drilling?

No. It is a research and prototype direction that organizes measurements, borehole evidence, and competing interpretations into a probability view. Its purpose is to show what is known, what is uncertain, and where verification would help most. It is not a certified geological reserve estimate.

What needs to be in place before a flight?

Site access, permission to fly, and any existing control or benchmarks you want the deliverables tied to. If you have none, we place and document ground control for the pilot.

Which machine-control systems can you produce files for?

Files are built to the format your system runs. Tell us what you operate when you request a quote; machine-control files are always Quote Required because they depend on the design, the machine, and the site.

Where do you work?

Expedited service across the Southwest US, and anywhere in the continental US on demand. Multi-site and out-of-area work is scoped per request.

Who owns the data?

You do. Site data, deliverables, and figures are yours. GPSCS does not publish client sites or use them as marketing material.

Plan a Site Intelligence Pilot

Tell us about the site and the question.

We reply with a proposed scope: what to capture, what you receive, and what it costs for that site.

Email
craig.dickerson@gpscsapp.com
Phone
(951) 409-1011
Service area
Expedited service across the Southwest US. Continental US on demand.
Office
332 E 7th Street, San Jacinto, CA
Services of interest

By sending this request you agree that GPSCS may contact you about it. No marketing list, no third-party sharing.