SECTION 209 — STORM DRAIN INLET PROTECTION — STORM DRAIN INLET PROTECTION
209.01 Description.
This work includes providing temporary storm drain inlet protection facilities . Ensure that all erosion, sediment, and pollution prevention controls and devices are in place before the start of excavation when required by the SWPPP/SESC. Storm drain inlet protection facilities include the following types. SECTION 907 addresses dust control to reduce dust nuisance and hazards. Silt Fence Inlet Protection. This work includes placing a temporary filter fabric fence around inlet grates. Baled Straw Inlet Protection. This work includes placing baled straw around storm drain inlets. Sack Insert Inlet Protection and High Flow Sack Insert Inlet Protection. This work includes placing a reusable geotextile sack installed in drainage structures for the protection of wetlands and other resource areas and for the prevention of silt and sediment from the construction site from entering the storm water collection system.
209.02 Materials.
Silt Fence Inlet Protection. Provide a filter fabric material suitable for sediment control applications , selected from the Department’s Approved Materials List. Provide wooden posts that are oak, 2-in. × 2-in. in section and at least 4½ ft in length. Provide s upport netting that is heavy-duty plastic mesh. For prefabricated silt fence, 1-in. × 1-in. wooden posts are permitted. Baled Straw Inlet Protection. Ensure that baled straw and wooden stakes conform to Subsection 206.02.1. Sack Insert Inlet Protection. Provide Sack Insert Inlet Protection with a permeable geotextile that allows water to pass but prevents silt, sediment , and trash from passing. Provide s acks that are woven polypropylene geotextile and sewn by a double needle machine using high strength nylon. Sacks include overflow holes to make the silt sack effective even in the most extreme weather events. Ensure that that sacks meet the following stipulations: • Minimum puncture strength, ASTM D4533 of 130 lb • Minimum sieve size of No. 20 • Minimum flow rate, ASTM D4491 of 100 gal/min/sq ft
Part 200 — Earthwork and Erosion Control August 2025
SECTION 209 — STORM DRAIN INLET PROTECTION 200-69
209.03 Construction Methods.
Install the erosion and pollution controls before initiating any drainage, roadway, or bridge construction or for the disturbance of any soils. Silt Fence Inlet Protection.
a.Installation. The following stipulations apply: ● Extend posts at least 1 ft below grade. ● Extend the filter fabric to a height at least 12 in. above the top of the inlet grate but not to exceed 3 ft. ● Extend the support netting to the full height of the filter fabric. ● Excavate a trench approximately 6 in. wide and 6 in. deep around the outside perimeter of the stakes. Extend the filter fabric and support netting at least 6 in. into the trench. After the fabric and support netting are fastened to the stakes, backfill and compact the trench to original grade. ● Securely fasten the filter fabric and support netting fence to the stakes using heavy duty wire staples at least 1-in. long. Ensure that the ends of the filter fabric meet at a stake and are overlapped, folded, and stapled to the stake.
b.Removal. Remove t he silt fence inlet protection, and prepare the area for pavement construction once the contributing drainage area is free from future uncontrolled discharges. Before this removal, remove all silt, mud, and debris entrapped by the silt fence and clean the area according to SECTION 212. Baled Straw Inlet Protection.
a.Installation. The following stipulations apply: ● Ensure that the bales are entrenched and backfilled. Excavate the trench to the width of the bale and the length of the check to a minimum depth of 3 in. After the bales are staked and chinked, backfill the excavated soil against the check. Provide backfill that conforms to the ground level on the inside and is built up to 4 in. around the outside. ● Install the bales so that the bindings are oriented around the sides of the bales. ● Securely anchor each bale with at least two stakes driven through the bale. Drive the first stake in each bale toward the previously laid bale to force the bales together. ● Ensure that the gaps between bales are chinked (filled by wedging) with straw to prevent water from escaping between bales.
b.Removal. Remove the baled straw inlet protection, and prepare the area for pavement construction once the contributing drainage area is free from future uncontrolled
Part 200 — Earthwork and Erosion Control August 2025
200-70 SECTION 209 — STORM DRAIN INLET PROTECTION discharges. Before this removal, remove all silt, mud, and debris entrapped by the baled straw and clean the area according to SECTION 212. Sack Insert Inlet Protection.
a.Installation. Ensure that the device is manufactured to fit the opening of the drainage structure and is mounted under the grate. Secure the insert sack from the surface so that the grate can be removed without the insert discharging or falling into the drainage structure. Block all curb inlets to prevent stormwater from bypassing the device. Install the sack (geosynthetic filter material), and maintain the sack according to the manufacturer’s literature. Repair or replace f ilter bags that become damaged during construction operations or cause water to collect at the surface at no additional cost to the Department.
b.Removal. Remove the insert sack when surface-borne sediment has been stabilized upon completion of final pavement and sidewalk placement and when the adjacent grade areas have become permanently stabilized by vegetative growth. When emptying the sack, ensure that the captured material does not enter the structure. Remove s ilt, sediment, and other debris found in the drainage system at the end of construction. Ensure that the silt and sediment from the sack are properly disposed of offsite. Do not deposit the silt and sediment from the insert on site or use the silt and sedimentation in construction. Before this removal, remove all silt, mud, and debris entrapped by the sack, and clean the area according to SECTION 212.
209.04 Method of Measurement.
Silt Fence/Baled Straw Inlet Protection. Silt Fence Inlet Protection and Baled Straw Inlet Protection will be measured by the linear feet of the protection installed. Sack Insert Inlet Protection. Sack Insert Inlet Protection will be measured by the number of inlets protected with sacks.
209.05 Basis of Payment.
The Department will pay for the completed and accepted quantities at the Contract unit prices as follows. Pay Item Pay Unit Silt Fence Inlet Protection LF Baled Straw Inlet Protection LF Sack Insert Inlet Protection EA
Part 200 — Earthwork and Erosion Control August 2025
SECTION 209 — STORM DRAIN INLET PROTECTION 200-71 Silt Fence Inlet Protection. The price constitutes full compensation for all labor, materials, and equipment, including excavation, stakes, support netting, filter fabric, backfill, the subsequent removal of the entire temporary facility, removal and disposal of entrapped material, and all incidentals required to finish the work, complete and accepted. Baled Straw Inlet Protection. The price constitutes full compensation for all labor, materials, and equipment, including excavation, straw bales, stakes, backfill, the subsequent removal of the entire temporary facility, removal and disposal of entrapped material, and all incidentals required to finish the work, complete and accepted. Sack Insert Inlet Protection and High Flow Sack Insert Inlet Protection. The price constitutes full compensation for all materials, including sacks, labor, equipment, and all incidentals required to finish the work, including final removal of the inlet protection device and removal and disposal of entrapped material, complete and accepted. Cleaning and Maintenance. The cleaning and maintenance of Silt Fence Inlet Protection, Baled Straw Inlet Protection, and Sack Insert Inlet Protection will be paid under SECTION 212. Payment will not be made for repairs and replacements necessary due to Contractor operations and damage or lack of proper maintenance.
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Source: Standard Specifications for Road and Bridge Construction (Blue Book), 2022 (Aug 2025 compilation) Edition. Pages 194–197 of 951. View official source ↗