Gosstroy Order No. 3-A (1990)
This comprehensive set of rules, titled "Rules for the Creation, Protection, and Maintenance of Green Plantings," serves as the technical bedrock for urban forestry across the post-Soviet space. Although originating in 1990, its rigorous agronomic standards for soil preparation, watering schedules, and pruning classifications remain technically superior to many current ad-hoc practices. It acts as the "missing link" in local legislation, providing the detailed definitions of maintenance that modern regulations often lack.
For Kanach Yerevan, this document is a crucial piece of evidence. It explicitly defines "sanitary pruning" and "crown shaping" in ways that contradict the aggressive topping currently seen in Yerevan. By citing this standard, we demonstrate that the city's current methods are not just ecologically damaging, but also violate the established professional norms of green construction that the municipality is supposed to inherit and uphold.