---
title: "Hercules CTC Clean Truck Check & Bit Inspection LL — Clean Truck Check, Hercules, CA"
description: "Hercules CTC Clean Truck Check & Bit Inspection LL in Hercules, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone…"
url: "https://ctcfinder.com/tester/hercules-ctc-clean-truck-check-and-bit-inspection-ll-hercules/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Hercules CTC Clean Truck Check & Bit Inspection LL

Clean Truck Check tester in Hercules, CA (Contra Costa 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 | 205 Ridgeview Ter, Hercules, CA 94547 |
| County | Contra Costa County |
| Phone | (510) 375-2397 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Hercules CTC Clean Truck Check & Bit Inspection LL 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 | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Not listed |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Clean Truck Check in San Pablo, about 5 miles away. [See listing](https://ctcfinder.com/tester/clean-truck-check-san-pablo/).

## Clean Truck Check testers in Contra Costa County

Hercules CTC Clean Truck Check & Bit Inspection LL is one of 61 testing businesses in Contra Costa County on CARB's public tester list. 57 of them offer mobile testing and 38 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 Hercules CTC Clean Truck Check & Bit Inspection LL offer mobile Clean Truck Check testing?

Yes. Hercules CTC Clean Truck Check & Bit Inspection LL 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 Hercules CTC Clean Truck Check & Bit Inspection LL test a 2012 or older diesel truck?

Hercules CTC Clean Truck Check & Bit Inspection LL does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Clean Truck Check](https://ctcfinder.com/tester/clean-truck-check-san-pablo/) (about 5 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Hercules CTC Clean Truck Check & Bit Inspection LL charge for a Clean Truck Check?

Hercules CTC Clean Truck Check & Bit Inspection LL has not published prices with us; call (510) 375-2397 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 Hercules CTC Clean Truck Check & Bit Inspection LL a CARB-credentialed tester?

Hercules CTC Clean Truck Check & Bit Inspection LL 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

- **[Michael Siverson](https://ctcfinder.com/tester/michael-siverson-rodeo/)** — Rodeo, CA 94572 — (510) 672-1557 — 2 mi. Services: mobile testing, OBD testing.
- **[Trucking Inc](https://ctcfinder.com/tester/trucking-inc-richmond/)** — 2828 Gonzaga Ave, Richmond, CA 94806 — (209) 737-3137 — 5 mi. Services: mobile testing.
- **[Clean Truck Check](https://ctcfinder.com/tester/clean-truck-check-san-pablo/)** — 1371 23rd St, San Pablo, CA 94806 — (510) 504-7599 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[El Amigo Smog](https://ctcfinder.com/tester/el-amigo-smog-san-pablo/)** — 3024 Giant Rd, San Pablo, CA 94806 — (510) 938-3344 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Jonathan Sordine](https://ctcfinder.com/tester/jonathan-sordine-san-pablo/)** — San Pablo, CA 94806 — (510) 241-6894 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Moiz Abdul](https://ctcfinder.com/tester/moiz-abdul-san-pablo/)** — San Pablo, CA 94806 — (916) 508-6393 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.