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A survey is also a time for appraisal. A survey allows you to describe the collection, but it should also provide you with enough information to appraise its research value, the relative merits of its parts, opportunities for weeding, etc. Some questions to keep in mind include: Which parts of the collection contain the most complete documentation of the person/organization? Are there materials that are not included that were expected to be part of the collection? Are there materials that could be weeded (duplicates, some newspaper clippings) or are out of scope (some student papers, etc.)? Could any of it be a good candidate for digitization?
Especially in collections with multiple accessions, do not move material around until after writing a processing plan and talking with your team lead.