SOIL SURVEY TO SITE INVESTIGATION BRIEF Pillar team | October 19, 2026 Manual editorial worksheet; not an engineering report or a test/design specification. 1. SITE AND DECISION Project reference: Jurisdiction and parcel identifier(s): Boundary source and source date: Proposed housing scenario / layout version: Decision this review informs: AOI boundary file/map and area (units): How AOI differs from the parcel/project boundary, if at all: Areas or project elements outside this review: 2. SOURCE RECORD Source URL and saved report/map filename: Soil survey area identifier/name: Source version, publication/revision dates, if stated: Date retrieved: Published mapping scale, if stated: Documented site alterations and dates, or unknown: 3. REPEAT FOR EACH MAPPED UNIT IN THE AOI Map-unit symbol, name and key if supplied: Mapped area within AOI and units: Component names and reported composition percentages: Other components/inclusions described, or not stated: Component locations: not delineated by the map-unit composition table. Do not convert composition into located soil acreage or buildable land. Exact selected property or interpretation: Description/legend saved with report: Applicable aggregation, cutoff, depth or month settings as shown: Rating/value and units exactly as reported, or missing/not rated: Stated reasons/limiting features and their component/report context: Settings or data still unresolved: 4. INVESTIGATION QUESTION AND HANDOFF Mapped observation prompting the question: Relevant project element or scenario assumption: What is known from this source: What remains unverified at this site: Question for the qualified reviewer about appropriate investigation scope: Responsible person and next action: Review date: 5. LATER EVIDENCE — PRESERVE THE ORIGINAL RECORD Report/response identifier, author, date and saved file: Actual site/scenario/area coverage: Conclusions within that report's stated scope: Unanswered questions or changed inputs: Working assumption, its basis, and who accepted it for which decision: FICTIONAL EXAMPLE CHECK 12-acre AOI; Alpha mapped over 8 acres; Beta over 4 acres. Alpha composition 60% X / 40% Y; neither component is spatially delineated. 8 * 0.40 = 3.2 is arithmetic under an unverified distribution assumption. It does not locate 3.2 acres of Y, classify them unusable, or establish yield. Beta's missing interpretation stays unresolved. 24 homes is a proposed scenario.