Title 14 CCR sections 1250 to 1258: the implementing rules
Updated: Sep 21
Title 14 CCR sections 1250 through 1258 are Article 4, Fire Prevention Standards for Electric Utilities. They set no clearance distance of their own. Section 1250 states the purpose as providing exemptions from the PRC 4292 and 4293 standards and specifying when and where those standards apply. The distances are the statute's.
Article 4 of Title 14 runs to twelve sections and imposes no clearance distance of its own. Every number in California's powerline firebreak and clearance regime sits in the Public Resources Code. Every section of Article 4 either says how one of those numbers is measured, says who is out from under it, or says where and when it is owed. Section 1250 states that in one sentence, and reading it first settles most of the arguments that follow, including the one about what a finding is actually written against.
What Article 4 says it is for
The regulations live at Title 14 (Natural Resources), Division 1.5 (Department of Forestry and Fire Protection), Chapter 7 (Fire Protection), Article 4, headed "Fire Prevention Standards for Electric Utilities." Section 1250 is the whole of the article's statement of purpose:
The purpose of Article 4 is to provide specific exemptions from: electric pole and tower firebreak clearance standards, electric conductor clearance standards and to specify when and where the standards apply.
Three jobs, and exemptions are named first. Nothing in that sentence claims to create a standard. The pole firebreak standard is PRC 4292's ten feet and the conductor standard is PRC 4293's four, six and ten feet; Article 4 operates them.
That has a consequence worth being precise about before an audit. There is no offense called a 1254 violation. A CAL FIRE finding is written against PRC 4292 or PRC 4293, and 14 CCR 1254 or 1256 is the reason the inspector's number is the number it is.
PRC 4021, which makes the negligent or willful omission of an act required by the relevant chapters of the Public Resources Code a misdemeanor, reaches the statute rather than the regulation. So the regulation is where a defense is built and the statute is where the exposure sits, and a compliance file that names only one of the two has named the wrong half.
Section 1250 itself was filed November 2, 1978, amended May 22, 1980, and refiled June 6, 1980 to correct typographical errors. Its Note cites PRC sections 4292 and 4293 as authority and references sections 4292 through 4296. That reference range is the article's declared footprint: five statutes, the two duties and the three relief sections. PRC 4295.5, the right of entry added in 2018, is not mentioned in any section of Article 4, and no section has been substantively amended since it was enacted.
The twelve sections, and how they pair
Two of the twelve carry decimal numbers, which is why a count of "1250 to 1258" comes out at nine if you count the endpoints and twelve if you read the article.
Section | Heading | What it does |
1250 | Purpose | States the article's three jobs |
1251 | Definitions | Eight terms, for this article only |
1252 | Areas Where PRC 4292-4296 Apply in State Responsibility Areas | The Director's standing area determination |
1252.1 | Official Area Maps | Where the SRA maps are held, and the Director's duty to forward boundary changes to the serving utility |
1252.2 | Boundary Location-Roads, Etc. | Boundaries along linear features run down the center line |
1252.3 | Boundary Location-Section Lines, Etc. | Structures on a section line or a powerline right of way that forms the boundary are inside the area |
1253 | Time when PRC 4292-4296 Apply | The declared fire season, county by county |
1254 | Minimum Clearance Provisions-PRC 4292 | Turns the ten feet into a cylindroid with three treatment layers |
1255 | Exemptions to Minimum Clearance Provisions-PRC 4292 | Continuous conductors, ten connector types, eight area types, low landscaping |
1256 | Minimum Clearance Provisions-PRC 4293 | Turns the radial distance into a 360 degree arc that follows conductor movement and vegetation sway |
1257 | Exempt Minimum Clearance Provisions-PRC 4293 | Conductor types, the 1255(c) areas, and the Exempt Trees regime |
1258 | Tree Lines | Applies both statutes to conductors fastened to living trees |
The shape is two matched pairs with shared front matter. Sections 1250 through 1253 are common to everything: purpose, definitions, where, when. Then 1254 and 1255 are the PRC 4292 pair, one saying how the firebreak is measured and one saying which poles are out. Then 1256 and 1257 are the PRC 4293 pair, in the same order. Section 1258 stands alone as the only section that reaches both statutes on facts of its own, by making a living tree carrying conductors a structure for both purposes.
Reading the pairs as pairs is the fastest way to catch a misfiled exemption. A claim that a span is exempt is a 1257 claim; a claim that a pole is exempt is a 1255 claim. The two lists share only one item, the agricultural and non-propagating areas in 1255(c), which 1257(a)(2) borrows by cross reference.
The authority notes decide how far each section reaches
Every California regulation carries a Note giving the statute it was adopted under and the statutes it implements. In Article 4 those Notes are not boilerplate, because they differ from section to section and the differences track exactly the pairing above.
Section | Authority cited | Reference |
1250 | 4292, 4293 | 4292-4296 |
1251 | 4292-4293 | 4292-4296 |
1252, 1252.1, 1252.2, 1252.3 | 4292, 4293 | 4125-4128, 4292, 4293 |
1253 | 4292, 4293 | 4125-4128, 4292, 4293 |
1254 | 4292 | 4292 |
1255 | 4292 | 4292 |
1256 | 4293 | 4293, 4296 |
1257 | 4111, 4293 | 4293, 4296 |
1258 | 4292, 4293 | 4292, 4293, 4296 |
All citations are to the Public Resources Code.
Two things fall out. The first is that 1254 and 1255 cannot do anything to a conductor clearance, and 1256 and 1257 cannot do anything to a pole firebreak, because neither pair's Note names the other statute anywhere. An exemption argument that cites the wrong one of the pair is not a weak argument, it is an argument aimed at a different obligation.
The second is the outlier. Section 1257 is the only section in the article whose authority reaches past sections 4292 and 4293, and it reaches to PRC 4111, the Board's general power to make and enforce regulations necessary and proper for the fire protective system. That citation is not original to the section.
The Note was amended on April 30, 2007, operative May 30, 2007, in the same filing that first added subsection (a)(3), the Exempt Trees subsection. The Board added a broader grant of authority in the same breath that it added the only obligation in Article 4 with no twin in the statute. What that broader grant is holding up is the annual inspection, database and July 1 reporting duty that subsection carries.
The 1252 series is the other Note worth reading. Those four sections are the only ones referencing PRC 4125 to 4128, the statutes by which the Board classifies State Responsibility Area lands. That is what gives the boundary rules in 1252.2 and 1252.3 their footing: they are not describing utility easements, they are describing where a classification line falls. Which land sits in which responsibility area is therefore a question answered upstream of Article 4, and answered by a different set of statutes.
What 1251 defines, and the words it leaves open
Section 1251 opens by limiting itself: the definitions that follow apply to this article unless the context requires otherwise. Eight terms are defined, and they are a mixed set. Two are electrical (conductor, connector). Two are fuel (duff, firebreak). Three are equipment types (hot line tap or clamp connector, self-supporting aerial cable, tree wire).
One is geometric, and it is the one that decides where a tape measure starts at a lattice tower (outer circumference). What that geometry does to a tower footprint and what the conductor definition pulls in besides wire each belong to the statute they serve.
More useful for an evaluator is the list of terms 1251 does not define. Mountainous land, forest-covered land, brush-covered land and grass-covered land are the four descriptions that decide whether either statute applies to a given acre, and not one of them is defined in the article that applies them. Neither is vegetation, nor tree, nor clearance. Those either come from the statute or they come from field judgment, which is why a scope determination in the file has to record the observed ground cover rather than assert the conclusion.
One deletion is worth knowing about. The definitions were amended on October 24, 2005, operative November 23, 2005, and that filing repealed the article's definition of "Agency." PRC 4292 and 4293 both condition their duties on a determination by the Director "or the agency which has primary responsibility for the fire protection of such areas."
Since November 2005 that phrase has had no definition anywhere in Article 4. Inside a State Responsibility Area it does not matter, because 1252 supplies the Director's determination directly. Outside one, the phrase is doing real work with nothing behind it, which is the practical reason a clearance program on Local Responsibility Area land has to identify the responsible agency by name in its own records.
1252 and 1253 are the determination the statute leaves open
Both PRC 4292 and PRC 4293 are conditional on their face. Each owes its duty "during such times and in such areas as are determined to be necessary" by the Director or the responsible fire protection agency. Read alone, neither statute tells a utility whether it owes anything on a given day at a given pole.
Section 1252 makes that determination once, standing, and only for one class of land: inside a State Responsibility Area, on the four ground cover types, the Director applies PRC 4292 through 4296 unless 1255 or 1257 exempts the specific pole or span. Section 1253 supplies the time half, tying applicability to the declared CAL FIRE fire season for the respective county and putting the declaration on the Department's website.
The date and the county are therefore both facts an inspection record can carry and both facts a later reader can check. Only a record that says which it was can answer what a clearance reading taken outside the declared season is worth.
The limit is the part that gets skipped. Section 1252 makes no determination for anything outside a State Responsibility Area. On Local Responsibility Area or federal land the statutes still read on their own terms, and the determination belongs to whoever has primary fire protection responsibility there.
Article 4 does not make it, does not require it to be made, and does not say what form it takes. That is a genuine gap rather than an exemption, and a corridor that crosses the boundary has one standing determination on one side of the fence and none on the other.
Section 1252.1 adds the one piece of Article 4 that generates a dated document arriving at a named company. When the Board revises State Responsibility Area boundaries under PRC 4125 to 4128, the Director forwards a legal description of the change to the electric utility serving the affected area. That letter is the cleanest available evidence of when a corridor entered the area, and it is worth filing as such rather than as correspondence.
Nothing in the article requires a record of the work
This is the finding that surprises people who go looking for a recordkeeping rule in Title 14 and cannot find one. Sections 1250 through 1258 impose exactly one affirmative documentation obligation, and it is not about clearance work. Section 1257(a)(3)(B) requires a utility claiming Exempt Trees to inspect them annually, to maintain a database of location, species and inspection date, and to report to CAL FIRE annually by July 1. That duty attaches to a claimed exemption, not to a trimmed span or a cleared pole.
Everything else in the article is silent. There is no required form, no retention period, no signature, and no annual filing for the firebreak and clearance work itself. The measurement rules in 1254 and 1256 describe a physical condition that either holds or does not; they do not ask anyone to write anything down.
The record that actually proves PRC 4292 and 4293 compliance is therefore built to somebody else's rule or to none. On a Commission-jurisdictional line, GO 95 Rule 18A's corrective action record and its ten year preservation period and the GO 165 inspection cycle supply the shape.
Off that, it is the utility's own program. Either way, an exemption claimed under Article 4 is proved by an artifact the article never asks for, which is the practical reason a working clearance record has to name the section number beside the claim and hold each artifact for a stated period.
How old each section is, and what that explains
Article 4 has one overhaul date and one section that has kept moving since.
Section | Most recent change on the Note |
1250 | Amended May 22, 1980; refiled June 6, 1980 for typographical errors |
1251, 1252, 1253, 1254, 1256, 1258 | Amended October 24, 2005, operative November 23, 2005 |
1252.1 | Amended October 24, 2005; change without regulatory effect to the opening paragraph filed October 12, 2021 |
1252.2, 1252.3 | No amendment recorded on the Note |
1255 | New subsection (b)(10) filed April 7, 1989, operative May 7, 1989 |
1257 | Change without regulatory effect to subsection (b), filed August 1, 2022 |
The October 24, 2005 filing is the date to remember, because it reached most of the article at once and is where the current text of the definitions, the area and season sections, and both measurement sections comes from.
The outlier at the bottom of the table explains a live operational problem. The ten connector types in 1255(b), which decide whether a pole with non-continuous conductors is a subject pole, have not been amended since April 7, 1989. One of the ten is named for a manufacturer's product line.
Every connector designed, sold and installed in the thirty-seven years since is outside the list, and nothing can be added to it except by a rulemaking. That is why new equipment reaches exempt status through the Director's exception procedure and a test burn rather than through the regulation. The list is not a current inventory of exempt hardware and has not been one for a long time.
Section 1257 is the counterexample, amended in 2005, 2007, 2008, 2010, 2012 and 2022. Its subsection (a)(3) was repealed and re-adopted in current form on February 8, 2012. The August 1, 2022 change to subsection (b) was filed as a change without regulatory effect under title 1, section 100 of the California Code of Regulations, which by definition could not alter what the subsection means. The pattern is consistent: the only section that moves is the only section citing PRC 4111.
The reprint in the field guide is not the regulation
CAL FIRE's California Power Line Fire Prevention Field Guide, 2021 edition, reprints Article 4 at pages 32 through 36, and it is where most field programs read these sections. It is a convenience copy, and it differs from the operative text in ways that matter.
Section 1252.3 is not in it at all. The guide's table of contents runs 1252.1, 1252.2, 1253, and the boundary rule that puts poles and conductors standing on a powerline right of way inside the State Responsibility Area when that right of way forms the boundary is simply absent. A utility mapping its corridors from the guide has no reason to know the rule exists, and it is the rule most likely to decide a contested span.
Section 1257 is reprinted under the heading "Minimum Clearance Provisions - PRC 4293," which is the heading of 1256. The operative heading is "Exempt Minimum Clearance Provisions-PRC 4293," and the text beneath the guide's version predates the February 8, 2012 rewrite. What the current section actually contains, and what each exemption costs to hold, is not visible in that reprint.
The Notes are mostly missing too. The guide carries the authority and reference lines for 1252, 1252.1, 1252.2 and 1253, and drops them from 1250, 1251, 1254, 1255, 1256, 1257 and 1258. The authority pattern described above is therefore invisible to anyone reading the guide alone, including the PRC 4111 citation on 1257.
The figures are separately numbered. The regulation's own measurement diagram for PRC 4293 is Figure 3 of the article, cross referenced in the text of 1256. The guide prints the same subject as its Figure 12 at page 38, alongside its Figure 10 for outer circumference and Figure 11 for the pole firebreak.
Article 4's figures were renumbered by the October 24, 2005 filing, which repealed Figure 2. A citation to "Figure 12" in a work order is a citation to the guide, not to the regulation, and the two do not share a numbering scheme.
None of this makes the guide a bad document. It makes it a secondary one. Where a determination turns on the text, the text to quote is the California Code of Regulations.
Where Article 4 stops
The article's own reference range answers most of this. It reaches PRC 4292 through 4296 and nothing else.
It does not touch General Order 95. Rule 35 and Table 1 Cases 13 and 14 are the Commission's rules, adopted under a different code, and the numbers do not match on the same span. It does not set inspection intervals; those live in General Order 165, and Article 4 does not distinguish a patrol from a detailed inspection or say which one can close a finding. It does not reach transmission reliability clearance, which is NERC FAC-003's subject on a separate theory and a separately derived distance.
It does not create the hazard tree duty. That obligation is in the trailing paragraph of PRC 4293 itself and carries no distance; Article 4's only contribution is 1257(b), which withholds every PRC 4293 exemption from trees identified as Hazard Trees in the Department's field guide. What makes a tree a hazard tree and what authority exists to remove one without waiting are answered elsewhere.
And it does not create or limit access. PRC 4295's relief where the legal right to clear is absent and PRC 4295.5's right of entry after notice and an opportunity to be heard are statutory. No section of Article 4 has been amended to mention either since 4295.5 took effect on January 1, 2019. Which body enforces which of these is the question that decides who will be reading the file.
What the record has to name
An Article 4 entry that survives review names the section by number, because the section number is what tells a later reader which statute the claim was aimed at and what the article permitted the claimant to assert.
For a pole, that means the subject pole determination with its basis. If the pole is claimed exempt, the entry names the subsection as well:
1255(a) for continuous conductors
1255(b) with the connector type and its position in the list of ten
1255(c) with the cultivation status
1255(d) with the planting record
For a span, it means the measured radial clearance with the conditions 1256 makes part of the measurement. If the span is claimed exempt, the entry names one of three:
1257(a)(1) with the evidence that the covering is intact
1257(a)(2) with the area type
1257(a)(3) with the arborist or forester confirmation, and the database entry that 1257(a)(3)(B) requires anyway
Two facts sit above every one of those entries and belong in the header rather than in the body:
the State Responsibility Area status of the location, which 1252 conditions the whole article on
the county's declared fire season status on the date of the work, which 1253 does
A file that records a distance without those two has recorded a measurement that cannot be tested against the rule it was taken under, because Article 4 makes both of them elements of whether the rule applied at all.
Further reading
PRC 4292: the ten-foot firebreak around a pole, and what counts: The statute that 14 CCR 1254 and 1255 operate, and the pole determination they turn on.
PRC 4293: radial clearance in State Responsibility Areas: The statute that 14 CCR 1256 and 1257 operate, measured from the conductor outward.
14 CCR 1257 and the Exempt Trees regime: The one section in the article that carries a reporting duty, and what it costs to hold.
Frequently asked questions
Do the Title 14 regulations set their own vegetation clearance distances?
No. Section 1250 states that the purpose of Article 4 is to provide exemptions from the pole firebreak and conductor clearance standards and to specify when and where those standards apply. The ten feet is in PRC 4292 and the four, six and ten feet are in PRC 4293. Sections 1254 and 1256 say how each distance is measured, not what it is.
Which Title 14 section exempts a pole, and which exempts a span?
Section 1255 exempts poles and towers from the PRC 4292 firebreak, and its Note cites and references section 4292 only. Section 1257 exempts conductors from the PRC 4293 clearance, and its Note cites sections 4111 and 4293 and references 4293 and 4296. Neither one reaches the other statute.
Do sections 1250 to 1258 apply outside a State Responsibility Area?
Section 1252 makes a standing determination only for land inside a State Responsibility Area. PRC 4292 and 4293 bind on their own terms elsewhere, but the determination that clearance is necessary belongs to the agency with primary fire protection responsibility for that area, and no section of Article 4 makes it for them.
Is the reprint of the regulations in the Power Line Fire Prevention Field Guide the operative text?
No. The 2021 guide reprints the article at pages 32 to 36 and omits 14 CCR 1252.3 entirely. It also prints 1257 under the heading 'Minimum Clearance Provisions' rather than 'Exempt Minimum Clearance Provisions,' in a form that predates the February 8, 2012 rewrite of that section.
Does anything in Article 4 require a utility to keep a record?
One subsection does. Section 1257(a)(3)(B) requires annual inspection of Exempt Trees, a database of their location, species and inspection date, and a report to CAL FIRE by July 1 each year. Nothing in 1250 through 1258 requires a record of firebreak or clearance work itself.
