Installation schedule considerations include not only grass seed
germination but also other time constraints associated with actual
on-site construction. In scheduling and implementing soil
amendments the following should be taken into consideration.
Turf germination period. Seed
germination and subsequent turf establishment can take anywhere
from nine to twelve weeks, depending upon the climatic zone. The
critical window for seed germination is usually within the first 2
to 3 weeks and grass seed will germinate only if proper water,
soil and air temperature considerations are met. Soil amending is
discouraged immediately after turf establishment as well as during
frozen soil conditions.
Site development schedule. As
the building construction completion date is often the primary
factor in determining the landscape installer’s schedule the
implementation of soil amendments are limited to a particular
timeframe, usually after building construction and driveway and
sidewalk installation. Care should be taken to ensure that soil
amendments are implemented during the right season and under the
right conditions in relation to other landscaping activities and
that the soil will not be adversely affected by the potential
compaction of construction equipment after the amendment process.
amendments can be implemented on existing developments, when
replacing or modifying an existing lawn, and are usually not subject
to limited time constraints, just the season and current weather
conditions. The recommended procedure is to first remove the lawn
by use of a sod cutter and then amend the soil as if installing a
new lawn at the site. If stored correctly the lawn can be easily
replaced after the soil has been amended.
The following is
a summary of a typical sequence of construction for the installation
of soil amendments.
Wood Treating Site:
On-Site Thermal Desorption of Contaminated Soils,
is usually performed with tractor, sometimes in combination with a
ripper attachment if the soil is highly compacted.
break-up subsoil. Most soils
will require at least two passes with a rototiller to adequately
break-up and prepare the subsoil for amendment uptake.