---
title: "Derek Somers — Clean Truck Check, Rescue, CA | CTC Finder"
description: "Derek Somers in Rescue, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing…"
url: "https://ctcfinder.com/tester/derek-somers-rescue/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Derek Somers

Clean Truck Check tester in Rescue, CA (El Dorado 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 | Rescue, CA 95672 |
| County | El Dorado County |
| Phone | (209) 256-5718 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Derek Somers 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 El Dorado County

Derek Somers is one of 16 testing businesses in El Dorado County on CARB's public tester list. 16 of them offer mobile testing and 7 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 Derek Somers offer mobile Clean Truck Check testing?

Yes. Derek Somers 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 Derek Somers test a 2012 or older diesel truck?

Yes. Derek Somers 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 Derek Somers charge for a Clean Truck Check?

Derek Somers has not published prices with us; call (209) 256-5718 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 Derek Somers a CARB-credentialed tester?

Derek Somers 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

- **[Cap City Diesel Inspections TRUCK, BUS, RV](https://ctcfinder.com/tester/cap-city-diesel-inspections-truck-bus-rv-el-dorado-hills/)** — 3941 Park Dr Suite 20, El Dorado Hills, CA 95762 — (916) 538-7777 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Steven Smith](https://ctcfinder.com/tester/steven-smith-el-dorado-hills/)** — El Dorado Hills, CA 95762 — (916) 607-7029 — 5 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Capital City Diesel Inspections- El Dorado County](https://ctcfinder.com/tester/capital-city-diesel-inspections-el-dorado-county-shingle-springs/)** — 4060 Upper Lane, Shingle Springs, CA 95682 — (916) 538-7777 — 9 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[JBA](https://ctcfinder.com/tester/jba-shingle-springs/)** — 4231 Sunset Ln, Shingle Springs, CA 95682 — (530) 213-3647 — 9 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Marco Musetti](https://ctcfinder.com/tester/marco-musetti-shingle-springs/)** — Shingle Springs, CA 95682 — (530) 313-0587 — 9 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Bryan Foley](https://ctcfinder.com/tester/bryan-foley-folsom/)** — Folsom, CA 95630 — (916) 316-3009 — 9 mi. Services: mobile testing, OBD testing, motorhome testing.