SECTION 860 — SEDIMENT TRAP
860.1 DESCRIPTION —
This work is construction of a sediment-collecting trap.
AASHTO No. 1 and No. 57, Section 703.2.
Class R-3, Section 850.2(a), except petrographic examination by the MTD is not required.
Geotextiles, Class 3, Type B — Section 735
Embankment — Section 206.2
Seeding and Soil Supplements — Section 804.2
Mulch — Section 805.2
860.3 CONSTRUCTION —
Construct, as shown on the Standard Drawings, at the location indicated or directed, as follows:
Clear and grub the site, as specified in Section 201.3. Construct the trap by excavating as specified in Section 203.3, forming embankments as specified in Section 206.3, and placing aggregate or rock at the outlet as indicated. Place geotextiles, Class 3, Type B as specified in Section 212.3(c). When required, obtain borrow excavation for the formation of the embankment, as specified in Section 205. Apply seeding and soils supplements, as specified in Section 804.3. Mulch, if required, as specified in Section 805.3.
When the sediment trap is no longer required, or when otherwise directed, recondition the site by filling in excavated areas, by removing embankments and aggregate, and by restoring the area, as specified in Section 105.14.
860.4 MEASUREMENT AND PAYMENT-
Class 1 Excavation.
(d) Borrow Excavation.
(e) Seeding and Soil Supplements.
For the type indicated, as specified in Section 804.4.
For the type indicated, as specified in Section 805.4.
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