][3.4.2
Vertical Mowing
Upon completion of aerating operation and Contracting Officer's approval to
proceed, vertical mow turf areas indicated, by approved device, to a depth
of [6 mm1/4 inch] [13 mm1/2 inch] above existing soil level, to reduce
thatch build-up, grain, and surface compaction. Keep clean at all times at
least one paved pedestrian access route and one paved vehicular access
route to each building. Clean other paving when work is complete. Remove
all debris generated during this operation off site.
][3.4.3
Dethatching
Upon completion of aerating operation and Contracting Officer's approval to
proceed, dethatch turf areas indicated, by approved device, to a depth of [
6 mm1/4 inch] [13 mm1/2 inch] below existing soil level, to reduce thatch
build-up, grain, and surface compaction. Keep clean at all times at least
one paved pedestrian access route and one paved vehicular access route to
each building. Clean other paving when work is complete. Remove all debris
generated during this operation off site.
][3.4.4
Overseeding
**************************************************************************
NOTE: Drill seeding is the most viable method of
overseeding when significant vegetation remains.
Existing vegetative cover (live or dead) may prevent
desired soil contact when seeded by other methods.
**************************************************************************
Apply seed in accordance with applicable portions of paragraph entitled
"Seed Application Method" at rates in accordance with paragraph entitled
"Seed Composition."
]]3.5
Restore to original condition existing turf areas which have been
damaged
during turf installation operations at the Contractor's expense.
Keep
clean at all times at least one paved pedestrian access route and
one paved
vehicular access route to each building. Clean other paving when
work in
adjacent areas is complete.
-- End of Section --
SECTION 02921
Page 18
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