---
title: "Smith Construction Services LLC — Clean Truck Check, Mariposa, CA"
description: "Smith Construction Services LLC in Mariposa, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD)…"
url: "https://ctcfinder.com/tester/smith-construction-services-llc-mariposa/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Smith Construction Services LLC

Clean Truck Check tester in Mariposa, CA (Mariposa 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 | 5347 Cole Rd, Mariposa, CA 95338 |
| County | Mariposa County |
| Phone | (559) 760-3079 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Smith Construction Services LLC 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 Mariposa County

Smith Construction Services LLC is one of 1 testing business in Mariposa County on CARB's public tester list. 1 of them offer mobile testing and 1 do smoke opacity tests.

## 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 Smith Construction Services LLC offer mobile Clean Truck Check testing?

Yes. Smith Construction Services LLC 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 Smith Construction Services LLC test a 2012 or older diesel truck?

Yes. Smith Construction Services LLC 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 Smith Construction Services LLC charge for a Clean Truck Check?

Smith Construction Services LLC has not published prices with us; call (559) 760-3079 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 Smith Construction Services LLC a CARB-credentialed tester?

Smith Construction Services LLC 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

- **[Charles Allen](https://ctcfinder.com/tester/charles-allen-oakhurst/)** — Oakhurst, CA 93644 — (559) 760-6578 — 22 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[The Burrow Corp Inc dba Design Electric](https://ctcfinder.com/tester/the-burrow-corp-inc-dba-design-electric-oakhurst/)** — 53318 Road 419, Oakhurst, CA 93644 — (559) 907-2387 — 22 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Rodriguez Smog](https://ctcfinder.com/tester/rodriguez-smog-planada/)** — 9075 State Highway 140, Planada, CA 95365 — (209) 410-8544 — 24 mi. Services: mobile testing, OBD testing.
- **[Repair-All](https://ctcfinder.com/tester/repair-all-coarsegold/)** — 35472 Wells Rd, Coarsegold, CA 93614 — (559) 304-8611 — 24 mi. Services: mobile testing, OBD testing, motorhome testing.