---
title: "Hollandia Dairy Inc SMarcos SDE — Clean Truck Check, San Marcos, CA"
description: "Hollandia Dairy Inc SMarcos SDE in San Marcos, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD)…"
url: "https://ctcfinder.com/tester/hollandia-dairy-inc-smarcos-sde-san-marcos/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Hollandia Dairy Inc SMarcos SDE

Clean Truck Check tester in San Marcos, CA (San Diego County).

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | 622 East Mission Road, San Marcos, CA 92069 |
| County | San Diego County |
| Phone | (562) 644-9251 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Hollandia Dairy Inc SMarcos SDE can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

## Clean Truck Check testers in San Diego County

Hollandia Dairy Inc SMarcos SDE is one of 178 testing businesses in San Diego County on CARB's public tester list. 157 of them offer mobile testing and 91 do smoke opacity tests. In San Marcos itself there are 4 listed businesses, 4 of them mobile.

## When your truck is due

Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Hollandia Dairy Inc SMarcos SDE offer mobile Clean Truck Check testing?

Yes. Hollandia Dairy Inc SMarcos SDE says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Hollandia Dairy Inc SMarcos SDE test a 2012 or older diesel truck?

Yes. Hollandia Dairy Inc SMarcos SDE lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See [OBD vs smoke opacity](https://ctcfinder.com/guide/obd-vs-smoke-opacity-test/).

### How much does Hollandia Dairy Inc SMarcos SDE charge for a Clean Truck Check?

Hollandia Dairy Inc SMarcos SDE has not published prices with us; call (562) 644-9251 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is Hollandia Dairy Inc SMarcos SDE a CARB-credentialed tester?

Hollandia Dairy Inc SMarcos SDE appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[kashif ahmed Official tester](https://ctcfinder.com/tester/kashif-ahmed-official-tester-san-marcos/)** — 1605 W Mission Rd Suite A, San Marcos, CA 92069 — (760) 580-9100 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Diesel Pollution Solutions Inc](https://ctcfinder.com/tester/diesel-pollution-solutions-inc-escondido/)** — 906 Jana Pl, Escondido, CA 92026 — (760) 407-7285 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[DM Emissions Testing](https://ctcfinder.com/tester/dm-emissions-testing-escondido/)** — Escondido, CA 92026 — (760) 803-8903 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[North County Clean Truck Check](https://ctcfinder.com/tester/north-county-clean-truck-check-escondido/)** — 2243 Bent Tree Place, Escondido, CA 92026 — (760) 805-9356 — 3 mi. Services: mobile testing, OBD testing.
- **[Rudy's Automotive Solutions (Mobile)](https://ctcfinder.com/tester/rudys-automotive-solutions-mobile-escondido/)** — Escondido, CA 92026 — (760) 783-3392 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Carrillo Equipment Repair](https://ctcfinder.com/tester/carrillo-equipment-repair-san-marcos/)** — 3480 Linda Vista Dr, San Marcos, CA 92078 — (760) 685-1392 — 4 mi. Services: mobile testing, OBD testing, motorhome testing.