topsoil and the surface shall be regraded and tracked until an even finished
grade is created.
B. Subgrades shall be observed and approved by ENGINEER before topsoil is
placed. After topsoil has been spread and fine graded, all large stiff clods,
lumps, brush, roots, stumps, litter and other foreign material shall be removed
from the area covered with topsoil and disposed of by CONTRACTOR. The
entire area where topsoil has been placed shall then be tracked as indicated in
paragraph 3.2.A above.
C. Application of fertilizer, lime, seed and mulch shall only be performed during
those periods within the seasons that are normal for such work as determined
by the weather and locally accepted practice, and as approved by ENGINEER.
CONTRACTOR shall hydroseed and hay mulch only on a calm day.
D. Contractor shall schedule seeding and fertilizing activities with ENGINEER and
OWNER.
E. Lime and fertilizer are to be spread hydraulically in one operation with the
hydroseeding.
F. Seed shall be sown within five (5) days following soil preparation, unless
otherwise approved by ENGINEER or OWNER. Seed shall be applied
hydraulically at the rates and percentages indicated. The spraying equipment
and mixture shall be designed so that when the mixture is sprayed over an
area, the lime, fertilizer, and seed shall be equal in quantity to the specified
rates. Prior to the start of Work, CONTRACTOR shall provide ENGINEER and
OWNER with a certified statement for approval as to the number of pounds of
materials to be used per 100 gallons of water. This statement shall also specify
the number of square feet of seeding that can be covered with the quantity of
solution in the hydroseeder.
G. Hay or straw mulch shall be tracked as described in Paragraph 3.2.A.
H. When protection of newly graded areas is necessary at a time outside of the
normal seeding season, CONTRACTOR shall protect those areas by whatever
means necessary (such as straw) or by other measures as approved by
ENGINEER and OWNER.
3.3. MAINTENANCE AND PROVISIONAL ACCEPTANCE
A. CONTRACTOR shall keep all seeded areas watered and in good condition, shall
reseed if and when necessary until a good, healthy, uniform growth is
established over the entire area seeded, and shall maintain these areas in an
approved condition until provisional acceptance.
B. On slopes, CONTRACTOR shall protect against wash outs by an approved
method. Any wash out that occurs shall be regraded and reseeded at
CONTRACTOR's expense until a good sod cover is established.
File No. 3066.096 Topsoil, Hydroseeding, and Turf Establishment 02830 - 3 of 4 December 2017
