BOL reconciliation: how to match fuel deliveries to tank readings.

What is a BOL and why does reconciliation matter?

A bill of lading (BOL) is the legal document that accompanies every fuel delivery. It records the supplier, the carrier (the trucking company that hauled the load), the grades delivered, the gallons per grade, and the temperature compensation factor used.

The BOL is what the supplier invoices off. The operator pays for the gallons the BOL says were delivered. If the BOL says 7,500 gallons of regular but only 7,400 actually landed in the tank, the operator paid for 100 missing gallons, about $400 at $4 wholesale.

Reconciliation between BOL and tank rise is the operator's defense against short-pour, wrong-grade delivery, and measurement disputes. Done at delivery, the evidence is fresh and the credit claim wins. Done a week later, the supplier disputes the evidence and the operator usually absorbs.

Understanding temperature compensation

Fuel volume contracts when cold and expands when warm. A gallon at 40°F occupies less physical space than a gallon at 80°F. Industry convention: fuel quantities are normalized to a reference temperature of 60°F (US gallons) or 15°C (most international).

The BOL will typically show two numbers:

• Gross gallons, actual physical volume delivered at observed temperature.
• Net gallons, volume corrected to 60°F equivalent.

Suppliers invoice off net gallons. Tank rise observed post-drop is close to gross gallons (because the tank contents are at the actual delivered temperature). The gap between the BOL net and the observed tank rise is the temperature compensation, typically 0.2–0.8% depending on the temperature gap.

The six-step BOL reconciliation workflow

1. Pre-delivery tank inventory read

ATG (Veeder-Root TLS or Gilbarco SmartTLS) read or manual tank-stick reading immediately before the truck connects. Locked baseline for the delivery reconciliation. Per-grade, record each tank that's about to be filled.

2. Verify BOL details at the truck

Before fuel transfer begins:

• Driver name and ID match the dispatch notification.
• Truck number matches the BOL.
• Supplier name matches the contract.
• Grades match what was ordered.
• Gallons per grade noted.
• Tank seals on the truck compartments intact (unbroken).
• Temperature compensation factor noted on the BOL.

3. Observe and record the drop

Observer (manager or trained clerk) watches the delivery. Records:

• Drop start time per grade.
• Drop end time per grade.
• Tank seals broken (which compartments).
• Any anomalies, driver complaints, slow drop, supplier-side issues.

4. Post-delivery tank inventory read

ATG read 30+ minutes after drop completion (fuel needs time to settle and de-foam in the tank, earlier reads can be inaccurate). Manual tank-stick read on the same timing. Per-grade reading recorded.

5. Compute the variance per grade

expected_tank = pre_delivery_tank + BOL_gallons
observed_tank = post_delivery_ATG_read

variance = expected_tank - observed_tank
variance_pct = variance / BOL_gallons

Tag the variance:
  balanced:  ≤ 0.5%   (normal temperature compensation + measurement)
  warning:   0.5–1.0% (review; usually resolved at observed temp)
  error:     1.0–2.0% (short-pour suspected; file credit claim)
  critical:  > 2.0%   (clear short-pour; file claim, dispute aggressively)

6. File credit claim within the supplier window

For warning/error/critical variances, file a short-pour claim through the supplier's portal or email channel within their window (typically 24–72 hours). Documentation needed:

• Pre-delivery and post-delivery tank readings.
• BOL copy with the temperature compensation factor visible.
• Observer notes (drop start/end times, anomalies).
• ATG report covering the delivery window.

Worked example: a 100-gallon short-pour

Delivery: Tuesday, 10 AM
Supplier: Local fuel jobber
Tank #1: Regular
  Pre-delivery ATG: 2,840 gal
  BOL net gallons: 7,500 gal
  BOL temperature factor: 0.992 (cool day)
  Expected post-delivery tank: 2,840 + 7,500 = 10,340 gal

Drop completion: 10:42 AM
Post-delivery ATG (read 11:15 AM): 10,205 gal

Variance: 10,340 - 10,205 = 135 gal "missing"
Variance %: 135 / 7,500 = 1.8%

Step-by-step diagnosis:
  - Temperature compensation alone explains: ~0.4% = ~30 gal
  - Measurement error: ~0.2% = ~15 gal
  - Combined normal baseline: ~45 gal
  - Remaining unexplained: 90 gal

Verdict: short-pour suspected (~90 gal at $4 wholesale = ~$360)

Action:
  Observer notes confirm tank seals were intact pre-drop.
  Post-drop seal #2 was found loose, driver re-secured.
  File credit claim within 24 hours with:
    - Pre/post ATG readings
    - BOL copy
    - Observer notes citing the loose seal
    - Photo of the loose seal post-drop

Resolution (5 business days):
  Supplier credits 85 gallons ($340), accepts the loose-seal
  evidence but disputes the full 90 gallons citing temperature
  compensation uncertainty.

Outcome:
  $340 recovered. Without reconciliation at delivery, $360 absorbed
  silently. With reconciliation but late filing (day 4), claim denied.
  Inside-window filing wins.

Common BOL reconciliation mistakes

• Trusting the BOL without observed reconciliation.The BOL is the supplier's claim. The tank rise is your evidence. Without observation, you have no defense against a short-pour.
• Reading the tank too soon post-drop.Fuel needs 20–30 minutes to settle and de-foam. Reading at 10 minutes produces inaccurate ATG numbers that distort the reconciliation.
• Confusing temperature compensation with shrink.A 0.3% gap on a cold-day delivery is normal. Filing claims on phantom shortages trains the supplier to ignore future claims.
• Reconciling per-delivery instead of per-grade.A two-grade drop with one grade short and another long can net near-zero but mask the per-grade problem. Reconcile each grade separately.
• Missing the credit-claim window. 24–72 hours is typical. Filing on day 5 usually loses regardless of merit. The window is why reconciliation has to happen at delivery, not when the bookkeeper gets to it.
• Not capturing observer notes.Tank seals, drop times, driver behavior, supplier-side anomalies, all matter when the credit claim escalates. Memory three days later isn't defensible evidence.