## Bottom line

The plaintiff expert’s **$9,640,488** report is not reliable as written. On the report’s own stated inputs:

- Correct lost profit: **$3,360,000**, not **$3,780,000**.
- Non-duplicative emergency freight, at most: **$420,000**, not **$620,000**.
- Future attrition and enterprise-value damages may not both be recovered.
- Unabsorbed fixed overhead: **$0**, not **$480,000**.
- Permitted interest: simple, 6%, two years, on past damages only: **$453,600**, not **$1,060,488**.

Corrected totals, assuming the selected future line is otherwise admissible:

| Alternative | Corrected total | Overstatement vs. $9,640,488 |
|---|---:|---:|
| Use customer-attrition method | **$5,733,600** | **$3,906,888** |
| Use enterprise-value method | **$6,433,600** | **$3,206,888** |

Thus the corrected arithmetic range on the report’s own stated future alternatives is:

> **$5,733,600 to $6,433,600**

If neither future method survives supplementation, the corrected past-damages-only total is:

> **$3,780,000 past damages + $453,600 interest = $4,233,600**

Granite Arc should not merely argue that the report is “inflated.” The report contains exact arithmetic errors, internal duplications, and a legally improper interest calculation. We should immediately demand targeted workpapers and prepare a motion to limit or exclude the opinion if the plaintiff fails to supplement.

---

# 1. Corrected damages calculations

## A. Lost profit arithmetic

The report states:

- Lost revenue: **$8,400,000**
- Avoided variable cost: **60%**
- Contribution margin: **40%**
- Reported lost profit: **$3,780,000**

The correct calculation is:

\[
\$8,400,000 \times 40\% = \$3,360,000
\]

So the lost-profit line is overstated by:

\[
\$3,780,000 - \$3,360,000 = \boxed{\$420,000}
\]

The reported $3,780,000 is 45% of $8,400,000, not 40%. The report’s stated 40% margin does not support the stated lost-profit number.

---

## B. Emergency freight

Reported emergency freight:

\[
\$620,000
\]

The report concedes that **$200,000** of that freight was entered into the variable-cost ledger used to derive the 60% variable-cost ratio.

Under the governing mitigation rule, a mitigation expense may be recovered in addition to lost profit only to the extent it was **not already included in the cost inputs used to calculate that profit**.

Therefore, on the report’s own inputs:

\[
\$620,000 - \$200,000 = \boxed{\$420,000}
\]

So the maximum non-duplicative emergency-freight line, subject to proof of reasonableness and causation, is **$420,000**.

Important caveat: The fact that $200,000 was included in the variable-cost ledger also raises a separate issue about whether the 60% variable-cost ratio itself is reliable. We should not invent a corrected ratio now. We should demand the ledger detail and test whether the 60% ratio was distorted. But for arithmetic correction from the report’s stated inputs, the separate freight adder cannot include the $200,000 that the report admits was already in the profit calculation.

Corrected past damages:

\[
\$3,360,000 \text{ lost profit} + \$420,000 \text{ non-duplicative freight}
= \boxed{\$3,780,000}
\]

Do not confuse this corrected past-damages total of $3,780,000 with the report’s erroneous $3,780,000 lost-profit line. They are the same number by coincidence, but they come from different calculations.

---

## C. Future attrition and enterprise-value duplication

The report adds:

- Future customer-attrition profit: **$1,500,000**
- Diminution in enterprise value: **$2,200,000**

The report also states that the enterprise-value figure capitalizes the same projected attrition cash flows used in the $1,500,000 attrition item.

Under the governing rule, those are alternative measures of the same future cash-flow loss. They may not both be recovered.

Therefore:

- If the plaintiff uses the attrition method, the **$2,200,000** enterprise-value line must be excluded.
- If the plaintiff uses the enterprise-value method, the **$1,500,000** attrition line must be excluded.

The court must be able to identify the data and assumptions supporting the selected method. If the plaintiff does not produce the models, the court cannot determine which method, if either, is reliable.

---

## D. Fixed-overhead duplication

Reported unabsorbed fixed overhead:

\[
\$480,000
\]

The report says fixed overhead was not included in the 60% avoided-cost ratio. That does not make it independently recoverable.

The lost-profit calculation is a contribution-margin measure: lost revenue less avoided variable cost. Under the governing rule, fixed overhead that continues during the loss period remains within the contribution-profit analysis and is **not added again as a separate loss**.

Therefore, the $480,000 fixed-overhead line is duplicative as reported and should be excluded:

\[
\boxed{\$0}
\]

If any portion of that $480,000 is actually an incremental out-of-pocket mitigation cost, the plaintiff must recharacterize and prove it. As labeled “unabsorbed fixed overhead,” it is not an additional damages item.

---

# 2. Corrected interest calculation

## A. Proper interest base

Prejudgment interest applies only to **past damages**, not to future attrition or enterprise-value damages.

Corrected past damages:

\[
\$3,360,000 \text{ lost profit} + \$420,000 \text{ non-duplicative freight}
= \boxed{\$3,780,000}
\]

The interest base is therefore:

\[
\boxed{\$3,780,000}
\]

It does **not** include:

- the duplicative $200,000 freight adder,
- the $480,000 fixed-overhead adder,
- the $1,500,000 future attrition claim,
- the $2,200,000 enterprise-value claim,
- the $420,000 lost-profit arithmetic overstatement.

---

## B. Proper method

The governing law requires **simple interest** at 6% per year, not compound interest.

The loss period midpoint is:

- Loss period: January 1 through June 30, 2024
- Midpoint: **April 1, 2024**
- Valuation date used by report: **April 1, 2026**

That is exactly two years.

Correct interest:

\[
\$3,780,000 \times 6\% \times 2 = \boxed{\$453,600}
\]

The report instead applied compound interest to the entire $8,580,000 subtotal:

\[
\$8,580,000 \times (1.06^2 - 1)
= \$8,580,000 \times 0.1236
= \$1,060,488
\]

The report’s interest is therefore erroneous in three ways:

1. **Wrong base**: it includes future damages and duplicative items.
2. **Wrong method**: it uses compound interest instead of simple interest.
3. **Wrong amount**: it adds $1,060,488 instead of $453,600.

Interest overstatement:

\[
\$1,060,488 - \$453,600 = \boxed{\$606,888}
\]

---

# 3. Corrected totals by alternative

## A. Corrected total using the customer-attrition method

Assuming, solely for arithmetic correction, that the $1,500,000 attrition claim is otherwise supported:

| Component | Amount |
|---|---:|
| Corrected lost profit | $3,360,000 |
| Non-duplicative emergency freight | $420,000 |
| **Past damages** | **$3,780,000** |
| Customer-attrition future profit | $1,500,000 |
| Simple interest on past damages | $453,600 |
| **Corrected total** | **$5,733,600** |

Overstatement:

\[
\$9,640,488 - \$5,733,600 = \boxed{\$3,906,888}
\]

Component overstatement under the attrition alternative:

| Error | Amount |
|---|---:|
| Lost-profit arithmetic overstatement | $420,000 |
| Freight already included in variable-cost inputs | $200,000 |
| Enterprise-value alternative added instead of excluded | $2,200,000 |
| Fixed overhead added as separate loss | $480,000 |
| Interest overstatement | $606,888 |
| **Total overstatement** | **$3,906,888** |

---

## B. Corrected total using the enterprise-value method

Assuming, solely for arithmetic correction, that the $2,200,000 enterprise-value claim is otherwise supported:

| Component | Amount |
|---|---:|
| Corrected lost profit | $3,360,000 |
| Non-duplicative emergency freight | $420,000 |
| **Past damages** | **$3,780,000** |
| Diminution in enterprise value | $2,200,000 |
| Simple interest on past damages | $453,600 |
| **Corrected total** | **$6,433,600** |

Overstatement:

\[
\$9,640,488 - \$6,433,600 = \boxed{\$3,206,888}
\]

Component overstatement under the enterprise-value alternative:

| Error | Amount |
|---|---:|
| Lost-profit arithmetic overstatement | $420,000 |
| Freight already included in variable-cost inputs | $200,000 |
| Attrition alternative added instead of excluded | $1,500,000 |
| Fixed overhead added as separate loss | $480,000 |
| Interest overstatement | $606,888 |
| **Total overstatement** | **$3,206,888** |

---

## C. Fallback if no future method is supported

If the plaintiff cannot support either future measure, the corrected past-damages-only total is:

\[
\$3,780,000 + \$453,600 = \boxed{\$4,233,600}
\]

In that fallback scenario, the report is overstated by:

\[
\$9,640,488 - \$4,233,600 = \boxed{\$5,406,888}
\]

---

# 4. Workpapers to demand before the expert deadline

The production request should be targeted, not broad. It should demand the materials necessary to test the specific arithmetic errors, duplications, and methodological choices in the report.

We should demand **native calculations**, not just PDFs. For spreadsheets, we should require the native workbook files, source data extracts, formulas, and any linked workbooks.

| Workpaper to demand | What it tests | Why it is material |
|---|---|---|
| 1. Native contribution-margin workbook | The $8,400,000 lost revenue, the 60% variable-cost ratio, the 40% margin, and the reported $3,780,000 lost profit. | Tests whether the $3,780,000 is a formula error, a misstated margin, or based on an unsupported 45% margin. Also tests whether fixed overhead or freight was embedded in the margin. |
| 2. General-ledger detail used to derive the 60% variable-cost ratio | The accounts, periods, amounts, and mappings behind the 60% variable-cost ratio. | Tests whether the 60% ratio is reliable; whether the $200,000 freight item was included; whether fixed overhead was improperly included or excluded; and whether the variable costs were actually avoided because sales were not made. |
| 3. Customer-level lost-revenue schedules | The $8,400,000 lost revenue base. | Tests causation, time period, customer attribution, and whether the same revenue loss is later counted in the future attrition or enterprise-value claims. |
| 4. Emergency-freight invoices, shipping logs, carrier rates, and ledger coding | The $620,000 freight claim and the $200,000 item said to have been entered into the variable-cost ledger. | Tests reasonableness, causation, dates, and whether the $200,000 was already included in the profit calculation. Also tests whether the remaining $420,000 is recoverable and how interest should be allocated if timing matters. |
| 5. Customer-attrition cash-flow model | The $1,500,000 future attrition profit claim. | Tests the customer population, attrition assumptions, probability of loss, profit margin, duration, and whether the same cash flows are used in the enterprise-value model. |
| 6. Enterprise-valuation model | The $2,200,000 diminution in enterprise value claim. | Tests whether the $2,200,000 is solely the capitalized value of the same attrition stream, whether any portion reflects independent enterprise-value loss, and whether the valuation assumptions are supported. |
| 7. Fixed-overhead schedule | The $480,000 unabsorbed fixed-overhead claim. | Tests whether the item is continuing fixed overhead, incremental mitigation cost, or an accounting allocation. Supports exclusion unless the plaintiff can recharacterize and prove it as a separate recoverable expense. |
| 8. Interest calculation spreadsheet | The $1,060,488 interest adder. | Tests whether the interest was compound or simple, the base amount, the start date, the end date, and whether future damages were improperly included. |
| 9. Crosswalk tying each report line item to source data and model cells | The fit and duplication across all report components. | Tests whether the lost-profit, freight, attrition, enterprise-value, fixed-overhead, and interest components are internally consistent or duplicative. |

We should also demand a short written explanation from the expert identifying:

1. which future method the plaintiff selects: attrition or enterprise value;
2. whether the $200,000 freight item is intended to be recoverable separately;
3. whether the $480,000 fixed-overhead item is intended to be an independent loss item;
4. the exact data and assumptions supporting the selected future method.

---

# 5. Recommended litigation sequence over the next ten days

Granite Arc should pursue a three-track strategy:

1. **Demand supplementation now.**
2. **Prepare a motion to limit or exclude the opinion.**
3. **Use the corrected calculations to frame the report as unreliable and inflated, not merely disputed.**

The bare argument that the report is “inflated” is weak. The strong argument is that the report contains exact, testable errors and fails to disclose the materials needed to test them.

## Day 1: Finalize the correction and send a targeted supplementation demand

Prepare an internal correction memo showing:

- $3,360,000 correct lost profit;
- $420,000 maximum non-duplicative freight;
- $0 fixed overhead as a separate line;
- exclusion of either attrition or enterprise value;
- $453,600 correct simple interest;
- corrected totals of $5,733,600 or $6,433,600.

Send a written supplementation request to plaintiff’s expert and counsel. The demand should state that the report is insufficient for reliable testing and demand the nine categories of workpapers listed above.

The demand should include a firm deadline, ideally at least three to four days before the overall production deadline, so Granite Arc has time to review and, if necessary, move.

Example deadline structure:

- Production of workpapers: **Day 5**
- Expert’s written response or supplemental report: **Day 7**
- Meet-and-confer: **Day 6**

The letter should state that if the workpapers are not produced, Granite Arc will move to limit or exclude the opinion.

---

## Day 2: Prepare the deficiency exhibit and deposition outline

Prepare a clean damages exhibit showing:

- report line items;
- corrected line items;
- corrected interest;
- corrected totals under both future-method alternatives;
- exact overstatement under each alternative.

Prepare a deposition outline for the plaintiff expert covering:

- how $3,780,000 lost profit was calculated from a 40% margin;
- whether the expert uses 40% or 45% in the workbook;
- where the $200,000 freight item appears in the variable-cost ledger;
- whether the $620,000 freight claim includes costs already reflected in the profit calculation;
- how the $1,500,000 attrition figure was calculated;
- how the $2,200,000 enterprise-value figure was calculated;
- whether the same cash flows support both future figures;
- why fixed overhead was added separately;
- why compound interest was used;
- why future damages were included in the interest base;
- what workpapers support each line item.

---

## Day 3: Meet and confer with plaintiff

Meet and confer to identify whether plaintiff will:

- produce the workpapers;
- correct the report;
- elect one future method;
- strike duplicative items;
- recalculate interest as simple interest on past damages only.

Do not concede that the $420,000 freight, $1,500,000 attrition, or $2,200,000 enterprise-value numbers are reasonable. The point of the correction is to expose the arithmetic and duplication, not to endorse the remaining inputs.

If plaintiff refuses or gives an incomplete response, record the failure. That becomes the foundation for the motion.

---

## Days 4–5: Review any production and run tie-outs

If plaintiff produces workpapers, immediately test:

1. Does the margin workbook produce $3,360,000 or $3,780,000?
2. Does the general-ledger detail show the $200,000 freight item?
3. Does the ledger detail show fixed overhead included or excluded?
4. Do the freight invoices support $620,000?
5. Do the lost-revenue schedules support $8,400,000?
6. Do the attrition and enterprise-value models use the same cash flows?
7. Does the fixed-overhead schedule show continuing overhead rather than incremental cost?
8. Does the interest spreadsheet show compound interest on the entire subtotal?

If the workpapers confirm the errors, prepare a short supplemental declaration with the tie-out results.

If the workpapers are missing, incomplete, or inconsistent, prepare a targeted deficiency letter identifying the exact missing materials.

---

## Day 6: File or finalize the motion to limit or exclude

If supplementation is inadequate, file a motion to limit the opinion, or an admissibility motion if the court treats it as a Daubert-type challenge.

The motion should ask the court to limit the report unless the plaintiff produces the missing materials and corrects the report.

The motion should request an order that:

1. the lost-profit line is corrected to **$3,360,000** unless the plaintiff produces a supported alternative;
2. the emergency-freight line is limited to **$420,000** absent proof that the remaining amount is reasonable, causally connected, and not otherwise included;
3. the plaintiff may rely on **only one** future measure: either the $1,500,000 attrition method or the $2,200,000 enterprise-value method;
4. the $480,000 fixed-overhead line is excluded;
5. prejudgment interest is recalculated as simple interest at 6% per year on past damages only from the midpoint of the loss period;
6. the corrected total cannot exceed the appropriate method-specific amount:
   - attrition method: **$5,733,600**
   - enterprise-value method: **$6,433,600**
   - no future method supported: **$4,233,600**

The motion should emphasize that the report is not merely high. It is internally inconsistent and fails to disclose the materials needed to test its arithmetic and duplication.

---

## Days 7–8: Prepare for a hearing or submission

Prepare a short hearing memorandum with:

- the report’s stated inputs;
- the corrected calculations;
- the report’s own concessions:
  - the $200,000 freight item was in the variable-cost ledger;
  - the enterprise-value model capitalizes the same attrition cash flows;
  - fixed overhead was not in the variable-cost ratio;
- the missing workpapers;
- the corrected range.

If the court prefers written submission, prepare a proposed order limiting the expert opinion.

Proposed order language could be:

> The plaintiff’s expert opinion is limited unless, before the expert-production deadline, plaintiff produces the native workpapers, data schedules, and material assumptions necessary to test the arithmetic and duplication in the report. As corrected on the report’s own stated inputs, the opinion may not include both the $1,500,000 attrition claim and the $2,200,000 enterprise-value claim; may not include the $480,000 fixed-overhead adder; may not include the $200,000 freight amount already reflected in the variable-cost inputs; and must recalculate interest as simple interest at 6% per year on past damages only from the midpoint of the loss period.

---

## Day 9: Prepare rebuttal evidence and trial damages table

Prepare a trial-ready damages table showing:

| Plaintiff report | Corrected amount | Basis |
|---|---:|---|
| Lost profit: $3,780,000 | $3,360,000 | $8,400,000 × 40% |
| Emergency freight: $620,000 | $420,000 | Exclude $200,000 already in variable-cost inputs |
| Attrition: $1,500,000 | Include only if attrition method selected | Alternative future measure |
| Enterprise value: $2,200,000 | Include only if enterprise-value method selected | Alternative future measure |
| Fixed overhead: $480,000 | $0 | Not separately recoverable under governing rule |
| Interest: $1,060,488 | $453,600 | Simple 6% on $3,780,000 for two years |

Prepare a short declaration or expert rebuttal, if available, confirming the arithmetic.

---

## Day 10: Finalize position before the deadline

By the production deadline:

- If the workpapers are produced and support correction, move to limit the report to the corrected range.
- If the workpapers are not produced, move to exclude or limit the unsupported portions of the report.
- Be prepared to argue at trial that the report is unreliable as to:
  - lost-profit arithmetic,
  - freight duplication,
  - future-damages duplication,
  - fixed-overhead duplication,
  - interest base and method.

Do not wait until trial to make the point. The corrected calculations and workpaper demand create the record for limitation now.

---

# 6. Final corrected summary

Report total:

\[
\boxed{\$9,640,488}
\]

Corrected past damages:

\[
\boxed{\$3,780,000}
\]

Corrected simple interest:

\[
\boxed{\$453,600}
\]

Corrected attrition-method total:

\[
\boxed{\$5,733,600}
\]

Corrected enterprise-value-method total:

\[
\boxed{\$6,433,600}
\]

Corrected range on the report’s stated future alternatives:

\[
\boxed{\$5,733,600 \text{ to } \$6,433,600}
\]

Exact overstatement:

- Under attrition method: **$3,906,888**
- Under enterprise-value method: **$3,206,888**
- If no future method is supported: **$5,406,888**

Granite Arc should demand the targeted workpapers immediately, force plaintiff to elect a single future method, and be prepared to move to limit the report to the corrected, non-duplicative, simple-interest damages range.