Page text layer uses a non-standard/substitution glyph encoding (get_text() returns garbled strings, not readable tags), so all marks below come from a manual visual read of a 200-dpi full-page render, tallied across 6 non-overlapping tiles covering the full 7200x4800px page exactly once (no overlap, no double-count risk from crop boundaries). Pixel positions were converted to PDF points at 72/200 = 0.36 pt/px, origin top-left. No legend or schedule exists on this sheet defining the EM2/EM3/EM5/BA EM/QA EM tags; group naming is inferred from the literal tag text only, not from any cross-reference.
Names come from: no legend on this sheet, so NECA 100-2006 is what a name rests on. It is the baseline for what a symbol MEANS, never for matching shapes — proportions differ per firm. Confirming a name here is a correction, and corrections are what build the firm's file.
Scale is UNSET. Nothing on this sheet has been measured. The reader declined to infer a scale rather than guess one, so there is no raceway and no branch wire off this sheet — together the largest block of material on a job of this kind. Set it from the title block and measurement becomes available.