In this chapter, the following documents are incorporated by reference. Documents Incorporated. American National Standard for Arboricultural Operations — Safety Requirements ANSI Z133 — 2017; American National Standard for Tree Care Operations — Tree, Shrub and Other Woody Plant Management — Standard Practices (Pruning), ANSI A300 (Part 1) — 2017 Pruning Revision of ANSI A300 (Part 1) — 2008 (R2014), with the following changes: Delete Section 6.2 and insert in its place: “6.2.1 Not more than 25 percent of the foliage should be removed within an annual growing season. The percentage and distribution of foliage to be removed shall be adjusted according to the tree’s species, age, health, and site.”; and “6.2.2 When frequent excessive pruning is necessary for a tree to avoid conflicts with elements such as infrastructure, traffic and utilities, removal or relocation of the tree shall be considered.”; and Delete the text of Section 8.2.2.2 and insert in its place “Climbing spurs shall not be used when entering and climbing trees for the purpose of pruning or other tree maintenance.”; American National Standard for Tree Care Operations — Tree, Shrub and Other Woody Plant Management — Standard Practices (Soil Management a. Modification, b. Fertilization, and c. Drainage), ANSI A300 (Part 2) — 2011 Soil Management a. Modification, b. Fertilization, and c. Drainage; American National Standard for Tree Care Operations — Tree, Shrub, and Other Woody Plant Management — Standard Practices (Supplemental Support Systems) ANSI A300 (Part 3) — 2013 Revision of ANSI A300 (Part 3) — 2006; American National Standard for Tree Care Operations — Tree, Shrub and Other Woody Plant Management — Standard Practices (Lightning Protection Systems), ANSI A300 (Part 4) — 2014 Lightning Protection Systems Revision of ANSI A300 (Part 4) — 2008; American National Standard for Tree Care Operations — Tree, Shrub, and Other Woody Plant Management — Standard Practices (Management of Trees and Shrubs During Site Planning, Site Development, and Construction) ANSI A300 (Part 5) — 2012 Revision of ANSI A300 (Part 5) — 2005; American National Standard for Tree Care Operations — Tree, Shrub, and Other Woody Plant Management — Standard Practices (Planting and Transplanting) ANSI A300 (Part 6) — 2012 Revision of ANSI A300 (Part 6) — 2005; American National Standard for Tree Care Operations — Tree, Shrub, and Other Woody Plant Management — Standard Practices (Integrated Vegetation Management a. Utility Rights-of-way) ANSI A300 (Part 7) — 2012 Revision of ANSI A300 (Part 7) — 2006; American National Standard for Tree Care Operations — Tree, Shrub, and Other Woody Plant Management — Standard Practices (Root Management) ANSI A300 (Part 8) — 2013; and American National Standard for Tree Care Operations — Tree, Shrub, and Other Woody Plant Management — Standard Practices (Tree Risk Assessment a. Tree Failure), ANSI A300 (Part 9) — 2017 Tree Risk Assessment a. Tree Failure Revision of ANSI A300 (Part 9) — 2011.