Phase: Applied learning · Worked scenarios · Calculations · Audit findings · Document drills
Apply what you've read — scenario by scenario, calculation by calculation
RE responsibilities, CCOs, labor compliance, force account. Each exercise has a hidden solution — work through your answer before revealing.
I
Scenario 01
Differing site condition CCO
Setup
Mid-construction on a federal-aid road rehab, the contractor encounters unsuitable subgrade material at depth not anticipated in the geotech report. The contractor proposes a CCO for $87,000 to over-excavate and replace 1,400 CY of material with imported borrow.
Question
How does the RE process this CCO? What approval is required?
Solution
CCO processing (LAPM Ch 16):
1. Verify the differing site condition. Per Standard Specifications §4-1.06, contractor must promptly notify RE of differing site conditions. RE verifies physical conditions, takes photos/notes, documents in the project diary.
2. Investigate basis for change. Differing Site Condition Type 1 (subsurface conditions materially different from those indicated in contract) vs Type 2 (unknown physical conditions). Determine basis for CCO.
3. Cost analysis. Independent cost estimate by RE for the change scope. Compare with contractor's proposal. Negotiate as needed.
4. Source of funds. Determine if this is reimbursable as federal-aid (likely yes for substantive scope changes within authorized federal participating cost) or if it pushes beyond authorization.
5. CCO documentation:
• Description of changed conditions and basis for change.
• Scope of work (1,400 CY over-excavation, import borrow placement).
• Cost breakdown (labor, equipment, materials, markup per CTSS).
• Time extension if any.
• Cited Standard Specification or special provision basis.
• Supporting documentation (geotech sketches, photos, contractor cost analysis).
6. Approval authority. Per LPA delegation:
• RE typically has authority up to a dollar threshold (e.g., $25K).
• Above threshold, project manager / department head approval.
• Significant changes may require Council/Board approval.
• CCOs that affect the federal authorization scope or significantly change cost may require Caltrans/FHWA notification.
7. Federal reimbursement. If within original federal authorization cap, federal participation continues at the established pro rata. If federal share is exhausted, LPA pays the excess with non-federal funds OR submits a request for additional federal authorization (LAPM 3-A modified RFA, may take weeks).
8. CCO execution. Signed by contractor, RE, and LPA authorized signer. Federal-aid reporting under Ch 16.
Authority: LAPM Ch 16; CTSS §4-1.06
II
Calculation 01
Force account work — when is it allowed?
Given
During construction, the contractor encounters an unforeseen drainage issue requiring 3 days of work. The contractor offers to perform the work either as: (a) a negotiated CCO at lump sum, or (b) force account.
Find
What governs force account work? When is it used?
Worked solution
Workings
- CTSS §9-1.04: Force account work is performed on a time-and-materials basis when the work cannot be reasonably priced as a lump sum or unit price.
- Force account requires daily reports documenting labor (hours, classifications, rates), equipment (hours, rental rates per Caltrans Labor Surcharge and Equipment Rental Rates), and materials (invoices).
- Markups per CTSS: Labor ~33%, equipment per Caltrans equipment rates, materials 15%, subcontractor 5%.
- Force account requires Caltrans/RE pre-authorization and ongoing approval of daily reports.
Answer: Force account is used when work scope is uncertain or cannot be reasonably priced lump sum. RE pre-authorizes and reviews daily reports. Pro: contractor doesn't need to take risk on unknown scope; LPA pays actual cost. Con: cost can escalate; requires intensive documentation.
For this 3-day drainage issue: if scope is clear (e.g., 1,400 LF of pipe replacement), negotiate a CCO. If scope is unclear (e.g., "investigate and remedy whatever you find"), force account may be appropriate.
Key audit risk: Force account without proper daily reports and authorization. Reimbursement may be denied. Insist on:
• Daily reports signed by RE.
• Labor classifications and rates verified against certified payroll.
• Equipment hours documented and rates verified against Caltrans rates.
• Material invoices supporting actual cost.
Authority: LAPM Ch 16; CTSS §9-1.04
III
Audit Finding 01
Read the fact pattern — what's the finding?
Facts
A 2026 labor compliance audit reviews certified payrolls for a federal-aid project. The audit finds that the prime contractor consistently classified concrete laborers as "general laborers" instead of the higher-rate "cement masons" classification, underpaying workers by $4-8/hour over 6 months of construction.
Analysis
What is the finding? What is the LPA's exposure?
Finding · Citation · Corrective action
Finding: Labor classification fraud and Davis-Bacon Act prevailing wage violations. The contractor misclassified workers to pay lower rates than required for the work performed.
Federal exposure (LAPM Ch 16):
1. Wage restitution. Contractor must pay back wages plus penalties. Owed amount × workers × hours over the misclassification period.
2. Withholding of contract payments. LPA must withhold contract payments to cover the back wages until restitution is paid.
3. Contract debarment. Severe Davis-Bacon violations can lead to federal contracting debarment for 3 years.
4. Federal participation risk. Repeated or systemic labor compliance failures can result in federal funding clawback.
LPA exposure:
1. Labor Compliance Officer responsibility. LPA must have a Labor Compliance Officer (or Compliance Program approved by DIR) monitoring certified payrolls. Failure to identify the violations earlier is an LPA finding.
2. Pre-Award audit impact affecting future federal-aid procurements.
3. State requirements. California prevailing wage law (Labor Code §1720 et seq.) also applies and creates additional state-level liability.
Corrective actions:
1. Withhold contract payment pending restitution.
2. Calculate back wages owed and notify contractor.
3. Coordinate with Caltrans Labor Compliance Office for the federal-aid investigation.
4. Strengthen LPA labor compliance review procedures.
5. Train Labor Compliance staff on classification review.
Lesson: Labor compliance is not a paperwork-tick exercise. Certified payrolls must be substantively reviewed: classifications, hours, rates, deductions, OJT participation, apprenticeship ratios.
Authority: LAPM Ch 16; Davis-Bacon Act; California Labor Code §1720 et seq.
IV
Document Drill 01
Project diary essentials
Drill
List the required elements of a daily project diary maintained by the RE on a federal-aid construction project.
Model answer
RE Daily Project Diary required elements (LAPM Ch 16; CTSS):
1. Date and weather conditions (relevant to schedule and force majeure determinations).
2. Work performed by station/location and bid item.
3. Quantities measured/installed (for pay quantity tracking).
4. Personnel on site: prime contractor staff, subcontractor staff (by firm), DBE participation, RE/inspection staff, visitors.
5. Equipment on site.
6. Materials delivered and supplier (with delivery tickets retained).
7. Sampling and testing performed and results.
8. Disputes, claims, or issues raised, including any contractor RFIs, change order discussions, differing site conditions.
9. Significant communications with contractor (verbal directions, meetings, agreements).
10. Safety observations and any incidents.
11. Photos with date/time/location stamps.
12. Signatures of RE and any other approving inspectors.
Why it matters:
• Federal reimbursement basis for force account work.
• Defense for CCO negotiations.
• Documentation for labor compliance review.
• Evidence in dispute/claim resolution.
• Tort liability defense.
• Compliance evidence in audit review.
The diary is the primary contemporaneous record of construction. Audit reviewers look at it first for any disputed item. Keep it daily, complete, and signed.
Format: Either bound notebook or digital (with electronic signature and tamper-evident retention). LAPM accepts both.
Authority: LAPM Ch 16; CTSS
Applied learning · Companion chapter
These exercises apply the procedural framework presented in LAPM Chapter 16: Administer Construction Contracts. For the full chapter reference, glossary, and recall quiz, see the deep chapter file.