Fence Line Utility Locate and Hand Dig Standard
Purpose
An 811 ticket tells a crew a line exists and roughly where; it doesn't dig the hole for them. The tolerance zone around every marked line is where a locate ticket and a shovel actually meet, and everything upstream of that point, the call, the wait, the paint, exists to make that one physical act safe rather than a guess. A crew that treats the paint as the finish line and switches back to power tools the moment a hole looks clear is the crew that hits the line the paint was marking. This standard is the sequence that gets a crew from a scheduled dig date to a cleared hole, with the hand-dig itself and the response to a strike both spelled out as procedure, not left to whoever's holding the shovel that day.
Scope
Covers the full sequence from ticket request through a cleared, hand-verified hole, for every fence job involving excavation of any kind, on every job regardless of size. It does not restate when and how 811 applies, the state-specific notice and validity windows, or the statutory basis for the tolerance zone and its penalties; Call Before You Dig State 811 Trigger owns that decision logic and this standard assumes it, citing it only where a step needs a specific figure. It does not cover what happens once a post hole is cleared and ready for a bit or a pier; Post Hole Auger and Powered Driver Daily Inspection and Helical Pier Post Installation Technique own the setting work that follows.
Roles and responsibilities
| Role | Owns | Hands off |
|---|---|---|
| Technician | Confirms marks and private-utility documentation before digging, executes the hand-dig and any stop-and-response, logs the result per post | A cleared hole with photo and log documentation before power tools or a pier drive head are used at that location |
| Crew lead | Pulls the 811 ticket, schedules the dig date against the notice window, authorizes work to resume after any strike | A valid ticket and a confirmed dig date before the crew is scheduled to the job |
| Shop | Maintains the utility owner and 811 contact list, files the private-utility statement with the job contract | A documentation trail, ticket, photos, statement, retrievable if a claim is filed months later |
Procedure
Pull the 811 ticket at scheduling, and confirm the state's minimum advance-notice window, see Call Before You Dig State 811 Trigger for the specific figure, has fully elapsed before the dig date, not just before the call was made. Acceptance: ticket number captured on the job record, scheduled dig date falls after the notice window has run. Wrong looks like scheduling a same-week reset or repair job without checking whether the notice window has actually elapsed since the ticket was called in, on the assumption that a small job doesn't really need the wait. Stop rule: any job whose scheduled dig date falls inside the notice window gets pushed; there is no small-job exemption. Hazard: none at this step, it's a scheduling decision.
White-line the full planned dig area before locators arrive: continuous paint or flags along the entire fence line, plus the buffer the ticket describes, not just at the corner and end posts. Acceptance: continuous marking or flagging along the full line, buffer width matching what the ticket communicates to locators. Wrong looks like flagging only the corner posts and trusting the line to read itself between them, which risks a locator sweeping only near the visible flags and missing a facility crossing mid-run where nothing was marked. Stop rule: incomplete white-lining gets finished, and if locators have already come and gone over an incomplete area, the ticket gets a callback before digging proceeds. Hazard: none new at this step.
On dig day, before any tool touches ground, walk the full marked line and confirm paint or flags are present matching the ticket's member-utility list, and photograph every mark. Acceptance: every utility listed on the ticket has a corresponding mark present, or a documented "clear" status on the ticket sheet for that utility; dated photo taken the same day, wide enough to show the fence line and clear enough to read colors. Wrong looks like proceeding because most of it's marked, treating an unmarked segment where paint should be as an oversight rather than as the absence of proof that no facility exists there. Stop rule: any listed utility with no corresponding mark and no documented clear status gets a call to the utility owner or 811 before digging proceeds at that location. Hazard: none new, this is a verification task.
Confirm the signed private-utility statement is on file for this job, irrigation, invisible pet fence, a gas line to a grill or pool heater, low-voltage lighting, septic laterals, before digging near any area the homeowner identified. Acceptance: signed statement on file, on-site copy available to the crew. Wrong looks like relying on a verbal "there's nothing back there" from a homeowner who may not know their own irrigation or low-voltage lighting layout in detail. Stop rule: no signed statement on file halts digging in the affected area until one is obtained. Hazard: none new, this is a documentation check.
At every marked crossing, keep mechanical augering outside the tolerance zone, per the reference card's stated distance, and hand-dig only inside it, using short, controlled probing strokes rather than full swings, continuing until the facility is exposed by sight or the hole clears it with margin. Acceptance: mechanical tools stay outside the tolerance zone at every crossing; inside it, hand tools only, digging continues until the facility is visually confirmed or the excavation clears its depth with margin, whichever the located facility requires. Wrong looks like hand-digging the first foot inside the tolerance zone and then switching to power because the hole feels clear, when a facility can sit at an angle or a depth a foot of hand clearance never actually confirmed, especially where the ticket lists more than one crossing facility at different depths. Stop rule: any contact with the shovel, however light, or any unexpected resistance, unusual color, or a taped or wrapped object turning up in the spoil stops the tool in place and moves to step 6. Hazard: a shovel can cut a shallow gas service or nick an energized conductor's jacket as readily as an auger can; keep the digging motion short and controlled specifically because this is the step where the crew's own tool is the hazard, not something external to guard against.
On any contact or suspected contact: stop the tool in place immediately, do not move, patch, or expose it further; if it's gas or gas is smelled, everyone clears to a safe distance upwind and calls 911, with no engines started and no phone used at the strike location until clear; if it's electric, nobody touches the line or anything contacting it, and everyone stays clear of the strike radius; in every case, call the utility owner from the ticket and 811 to report the strike, and hold the site until the utility releases it. Acceptance: response executed in that order, incident logged with time, ticket number, and utility owner contact, and a documented release, in writing or a logged verbal confirmation with a name and time, before work resumes at that location. Wrong looks like pausing, debating whether the contact was really a hit, and probing again to check, when the second touch is frequently what actually causes a release or a shock, not the first. Stop rule: work does not resume at that specific location until the utility owner's release is documented; a crew's own judgment that it's probably fine does not substitute for that release. Hazard: an unreleased gas line at the strike location is an ignition risk from any spark source, including a restarted engine or a phone; move clear before doing either.
Log the ticket number, locate date, white-lining photo, mark-verification photo, private-utility statement reference, and hand-dig completion for each affected post location, before the setting procedure, auger, pier, or driver, begins at that hole. Acceptance: entry complete for every post location on the run before any powered tool is used at that location. Wrong looks like logging the ticket once for the whole job and treating every post as covered, when a single ticket can still have gaps at individual crossings that steps 3 through 6 exist to catch post by post. Stop rule: a post location with no completed hand-dig log entry does not get a powered tool or drive head at it, regardless of how the rest of the job's documentation looks.
The record this produces
The dig log ties a ticket number, its supporting photos, and a hand-dig completion status to each individual post location, not just to the job as a whole. Anyone reviewing it later, the utility's damage-recovery group, the shop's insurer, or a state enforcement office, is looking for the same thing: proof the crew knew what was marked before they dug and controlled the one point where a tool actually meets a located line. A job log with a ticket number but no per-post hand-dig entries reads, to that reader, the same as a job with no ticket at all.
Worked pass, with a step that failed
A six-post repair section, ticket pulled four business days before the scheduled dig date, well past the state's two-day notice minimum.
Step 2: white-lining runs the full six-post span plus the ticket's buffer, photographed before locators arrive.
Step 3: on dig day, the crew walks the line against the ticket's member list. Every listed utility has a corresponding mark except one, an orange communications line the ticket lists for a fiber provider, with no paint visible anywhere on the span. Fail on the mark-verification check. Stop rule taken: crew calls the utility owner listed on the ticket before any digging begins; the owner confirms a locator was dispatched and re-sends one the same day, who marks the line roughly 3 feet off the fence run, closer to the property's existing walkway than anyone expected.
Step 4: signed private-utility statement on file, no additional private lines flagged by the homeowner.
Step 5: hand-digging proceeds inside the tolerance zone at the one post nearest the now-marked fiber line; the other five posts sit clear of any marked crossing and are dug conventionally outside any tolerance zone. At the affected post, the shovel meets firm resistance at roughly 14 inches, wrapped in tape consistent with a conduit jacket. Tool stopped in place immediately.
Step 6: crew clears back, calls the utility owner and 811 to report the find rather than acting on the homeowner's earlier assumption that there's nothing out there. The utility owner confirms it's an abandoned, de-energized line from a prior provider, no longer in service, but asks to send someone to verify and formally abandon it in their records before the crew proceeds. Work at that post holds for about 40 minutes until the utility's technician arrives, confirms, and gives verbal release, logged with a name and time.
Step 7: full log completed for all six posts, with the one affected post's entry carrying the stop-and-response detail, the delayed mark, and the documented release.
References
- See related: Call Before You Dig State 811 Trigger, for state-specific notice and validity windows, tolerance-zone distances, and penalty schedules; this standard executes the sequence that reference card explains the legal basis for.
- See related: Post Hole Auger and Powered Driver Daily Inspection, since mechanical augering must stay outside the tolerance zone this standard establishes at every marked crossing.
- Common Ground Alliance Best Practices, the industry damage-prevention standard most state statutes adopt by reference, for the hand-dig-within-tolerance-zone practice this standard's hand-dig step follows.