Mendocino County Sheriff | License plate readers

Federal money, twice, on the consent calendar

The Sheriff’s Office did not buy its licence plate readers out of the county budget. It applied for them, twice, to the US Department of Justice.

Both applications went to the Board of Supervisors under the same federal programme, the Rural and Small Department Violent Crime Reduction Program, and both were for $300,000. The first, in July 2023, was specifically for “the Strategic Installation and Implementation of License Plate Reader Technology”. The second, in June 2024, covered a resident deputy incentive programme, overtime for patrols in rural crime hot spots, and the procurement of a reader system.

Both were consent items. The 2023 one was item 3ah) and passed five to nothing. The 2024 one was item 3x), and Legistar holds no roll call for it.

The consent calendar is where routine business goes. Items on it are approved together, without separate discussion, unless a supervisor asks for one to be pulled. Nothing about that is irregular and this page does not suggest otherwise. It is worth knowing for a practical reason: a resident who watches only the discussion portion of a board meeting would not have seen either of these items go by, and a search that reads only discussion agendas will not find this county’s decision record at all.

The grant proposal is better argued than most

The 2024 proposal is the most carefully sourced document of its kind this site has read.

It budgets the equipment plainly: “the purchase of six (6) LPRs, installation and maintenance in Years 1 and 2 of the grant performance period”, at $21,900 in the first year and $24,000 in the second, inside total project costs of $299,384.

What sets it apart is its footnotes. It cites the Department of Justice COPS Office guidebook on integrating crime analysis into patrol work, the International Association of Chiefs of Police guidance on plate recognition policy and operations, and the National Policing Institute’s multi-site evaluation of plate readers. Every reference carries a retrieval date of 18 April 2024.

It cites no vendor material at all.

That is worth saying clearly, because on this site it is rare. Other counties have briefed their elected boards from a manufacturer’s handout. This office went to the research literature, including work that is not uniformly favourable to the technology, and told the federal government what it had read.

The proposal also makes two commitments in its own words: “Implementing strong policies and procedures of using the ALPR technology, to include policies on data collection, sharing and privacy protections”, and “Regular evaluation of the ALPR program”.

The policy those commitments produced

Policy 470 is published properly. It has its own PDF, and the office maintains a dedicated ALPR page that links to it. The policy itself makes that someone’s job: the ALPR Administrator is responsible for “Ensuring this policy and related procedures are conspicuously posted on the office’s website”. The office does it.

The contents are the standard clauses. Reasonable suspicion or probable cause is not required. Retention is a minimum of one year. Access runs through a login that records name, date and time. Audits “should be conducted on a regular basis”, with no frequency set.

And then there is the release section, which is the shortest one on this site:

The ALPR data may be shared only with other law enforcement or prosecutorial agencies for official law enforcement purposes or as otherwise permitted by law, using the following procedures:

That is the whole rule. There is no definition of a public agency. There is no mention of out-of-state agencies, or federal ones, anywhere in the policy.

Five counties on this site now publish a version of this same section, and this is the loosest of them. Two name the exclusion of out-of-state and federal agencies outright, with the statute cited. One reaches the same place by restricting sharing to California agencies. Two, including this one, say only that the recipient must be a law enforcement or prosecutorial agency.

This does not establish that anything improper has happened here. A policy is a text, not a log, and state law binds this office whether or not its manual repeats the point. What it establishes is narrower and still worth knowing: the rule that stops county plate data from reaching a federal agency is not written down in the document a Mendocino resident would find if they went looking for the rules.

The city police department in the county seat rewrote exactly that clause into its own manual in March 2026.