Review Environmental Site Assessment

---
name: review-environmental-site-assessment-compressor-acquisition
task_id: energy-natural-resources/review-environmental-site-assessment
description: Guides review of environmental site assessments for an infrastructure acquisition by identifying classification errors, sampling gaps, storage-tank compliance deficiencies, air permit exposure, and cleanup-liability risks, and by cross-checking consultant conclusions against the raw data and seller representations.
activates_for: [planner, solver, checker]
---

# Skill: Environmental Site Assessment Review — Energy Infrastructure Acquisition

## 1. Subject-matter triage
- Treat the assignment as a portfolio-level environmental diligence review that must still be analyzed site-by-site.
- First identify how many sites, reports, permits, databases, and purchase-agreement references are in scope; if there is only one of a category, say so expressly before analyzing it.
- Separate operational issues, regulatory violations, and allocation issues; do not collapse them into one bucket.
- If the materials include a primary deliverable file and a separate memo request, confirm the requested file is the operative output and the memo serves as the written advisory product.

## 2. Failure modes the skill is correcting
- Consultant conclusions are accepted at face value even when the underlying facts, sampling tables, or tank records point the other way.
- Environmental conditions are under-classified because the reviewer does not test whether the stated risk level follows from the raw data.
- Phase II scopes omit Phase I conditions without a documented reason, leaving an incomplete investigation.
- Screening levels are applied without checking whether they match the site’s actual or intended land use and exposure pathway.
- Tank compliance items are missed because the review stops at the existence of records and does not test timeliness, inspector credentials, or reconciliation support.
- Air-permit exposure is missed because throughput changes, added equipment, or revised operations are not compared against the permit history and modification triggers.
- Unpermitted equipment is not converted into time-based violation exposure.
- Cleanup liability is understated because the reviewer does not assess whether strict-liability regimes, prospective-purchaser protections, or migrating contamination issues apply.
- Seller environmental reps are not compared against the actual diligence record.
- Waste oil areas are treated as ordinary petroleum issues without checking separate regulatory treatment.

## 3. Legal frameworks / domain conventions that apply
- Apply the environmental site assessment framework under the applicable ASTM standard; classification changes need factual support in the workpapers, not consultant preference.
- Apply the Phase I / Phase II convention that every identified environmental condition should be carried through to investigation scope unless a documented exclusion is justified.
- Apply federal and state underground storage tank requirements, including tightness testing, inventory reconciliation, cathodic protection testing, and use of approved inspectors where required.
- Apply Clean Air Act permitting concepts, including Title V operating permit obligations and NSR/PSD major-modification review when emissions or throughput changes may cross a significance threshold.
- Apply strict-liability cleanup regimes and purchaser-defense concepts for releases or disposal conditions that may attach to current and former owners or operators.
- Apply the contractual standard that environmental representations and warranties are measured against the diligence findings and related schedules, certificates, and disclosure materials.
- Apply the petroleum-versus-waste-oil distinction where maintenance waste oil may fall outside ordinary petroleum exclusions and require separate regulatory treatment.
- Cite the controlling authority relied on for each proposition using the statute, regulation, permit program, or standard that governs the issue in the materials or, if not stated, the generally recognized authority for the subject.

## 4. Analytical scaffolds
- For each site, start with the consultant’s stated conclusion, then test it against the raw sampling data, historical records, maps, photos, and database hits.
- For each identified condition, ask whether the classification is supported by the evidence; if a lower-risk label is used, explain what facts justify it.
- For each Phase I condition, confirm whether Phase II addressed it; if not, state whether the omission is unexplained, partially investigated, or outside scope by documented rationale.
- For each sample set, compare the screening levels used to the relevant exposure scenario and land use assumptions.
- For each tank or tank system, review testing dates, inspection credentials, reconciliation records, corrosion protection logs, and any overdue interval.
- For each air source or operational change, compare actual operations to the current permit, prior revisions, and any trigger for modification review.
- For each issue, close the analysis by tying the finding to a source threshold or factual marker, cross-referencing the document or schedule that interacts with it, and stating the client consequence.
- For each seller environmental representation, compare it against the diligence record and note whether a specific indemnity, disclosure update, or price allocation issue follows.
- For each nearby contaminated site, identify proximity, migration pathway, and whether the acquisition property could inherit cleanup burden or response obligations.
- For each issue, note whether it is pre-closing curable, can be allocated economically, or requires a covenant, escrow, or indemnity.

## 5. Vertical / structural / temporal relationships
- Analyze the portfolio in a site-by-site structure, then synthesize cross-site themes and aggregate exposure at the end.
- Distinguish historical conditions from ongoing operational violations and from future remediation risk.
- Escalate issues that affect multiple facilities, recurring compliance practices, or enterprise-wide permitting assumptions.
- Where timing matters, distinguish immediate correction needs from post-closing cleanup planning and long-tail liability.

## 6. Output structure conventions
- Use a memorandum format organized by site, then by issue category within each site.
- Open with a short legend that defines an ordinal severity scale and apply it consistently to every issue entry.
- For each issue, include: site; issue description; severity; governing authority; evidence relied on; why the evidence supports the issue; related document or schedule cross-reference; consequence to the client; and recommended action.
- Make each issue entry self-contained and closed: identify the factual scale of the problem, the interacting document or record, and the resulting operational, regulatory, litigation, or transactional impact.
- End with a portfolio-level synthesis that distinguishes pre-closing action items from issues better handled through indemnity, escrow, covenant, or price adjustment.
- Conclude with a Recommended Actions section that assigns an action verb, the responsible role, and the timing anchor tied to signing, closing, permit deadlines, or regulatory response windows.