TxDOT Seeding for Erosion Control.pdf

PDF 154 KB Posted Nov 18, 2021

Attached to: Stoppage Repair West Runway Friction Improvement - 100% WOSB
Solicitation number: FA301622R0002
Issued by: Department of the Air Force Air Education and Training Command

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Written by GovTribe AI · Dec 28, 2023

This document outlines a federal contract solicitation for runway repair services. The 502nd Contracting Squadron at Joint Base San Antonio-Randolph is seeking bids to repair the west runway's friction improvement surface. The estimated value of the contract is between $1,000,000 and $5,000,000, and the period of performance is 120 calendar days. The solicitation is set aside exclusively for women-owned small businesses. Offerors are advised that funding is not presently guaranteed, and the Air Force reserves the right to cancel the solicitation either before or after the closing date without obligation.

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Item 164 Seeding for Erosion Control

1. DESCRIPTION

Provide and install temporary or permanent seeding for erosion control as shown on the plans or as directed.

2. MATERIALS

2.1. Seed. Provide seed from the previous season’s crop meeting the requirements of the Texas Seed Law, including the testing and labeling for pure live seed (PLS = Purity × Germination). Furnish seed of the designated species, in labeled unopened bags or containers to the Engineer before planting. Use within 12 mo. from the date of the analysis. When Buffalograss is specified, use seed that is treated with KNO3 (potassium nitrate) to overcome dormancy.

Use Tables 1–4 to determine the appropriate seed mix and rates as specified on the plans. If a plant species is not available by the producers, the other plant species in the recommended seed mixture will be increased proportionally by the PLS/acre of the missing plant species.

Table 1 Permanent Rural Seed Mix

District and Planting Dates Clay Soils Species and Rates (lb. PLS/acre)

Sandy Soils Species and Rates (lb. PLS/acre)

1 (Paris) Feb. 1–May 15

Green Sprangletop Sideoats Grama (Haskell) Bermudagrass Little Bluestem (Native) Illinois Bundleflower

0.3 3.2 1.8 1.7 1.0

Green Sprangletop Bermudagrass Bahiagrass (Pensacola) Sand Lovegrass Weeping Lovegrass (Ermelo) Partridge Pea

0.3 1.5 6.0 0.6 0.8 1.0

2 (Ft. Worth) Feb. 1–May 15

Green Sprangletop (Van Horn) Sideoats Grama (Haskell) Texas Grama (Atascosa) Hairy Grama (Chaparral) Shortspike Windmillgrass (Welder) Little Bluestem (OK Select) Purple Prairie Clover (Cuero) Engelmann Daisy (Eldorado) Illinois Bundleflower Awnless Bushsunflower (Plateau)

1.0 1.0 1.0 0.4 0.2 0.8 0.6 0.75 1.3 0.2

Green Sprangletop (Van Horn) Hooded Windmillgrass (Mariah) Shortspike Windmillgrass (Welder) Hairy Grama (Chaparral) Slender Grama (Dilley) Sand Lovegrass (Mason) Sand Dropseed (Borden County) Partridge Pea (Comanche) Little Bluestem (OK Select) Englemann Daisy (Eldorado) Purple Prairie Clover

1.0 0.2 0.2 0.4 1.0 0.2 0.2 0.6 0.8 0.75 0.3

3 (Wichita Falls) Feb. 1–May 15

Green Sprangletop (Van Horn) Sideoats Grama (Haskell) Texas Grama (Atascosa) Hairy Grama (Chaparral) Shortspike Windmillgrass (Welder) Little Bluestem (OK Select) Blue Grama (Hachita) Western Wheatgrass (Barton) Galleta Grass (Viva) Engelmann Daisy (Eldorado) Awnless Bushsunflower (Plateau)

0.6 1.0 1.0 0.4 0.2 0.8 0.4 1.2 0.6 0.75 0.2

Green Sprangletop (Van Horn) Hooded Windmillgrass (Mariah) Shortspike Windmillgrass (Welder) Hairy Grama (Chaparral) Sand Lovegrass (Mason) Sand Dropseed (Borden County) Partridge Pea (Comanche) Little Bluestem (OK Select) Englemann Daisy (Eldorado) Purple Prairie Clover (Cuero)

1.0 0.2 0.2 0.4 0.2 0.2 0.6 0.8 0.75 0.3

4 (Amarillo) Feb. 15–May 15

Green Sprangletop Sideoats Grama (Haskell) Blue Grama (Hachita) Buffalograss (Texoka) Illinois Bundleflower

0.3 3.6 1.2 1.6 1.0

Green Sprangletop Weeping Lovegrass (Ermelo) Blue Grama (Hachita) Sand Dropseed (Borden Co.)

Sand Bluestem Purple Prairie Clover

0.3 0.8 1.0 0.3 1.8 0.5

District and Planting Dates Clay Soils Species and Rates (lb. PLS/acre)

Sandy Soils Species and Rates (lb. PLS/acre)

5 (Lubbock) Feb. 15–May 15

Green Sprangletop Sideoats Grama (El Reno) Blue Grama (Hachita) Buffalograss (Texoka) Illinois Bundleflower

0.3 3.6 1.2 1.6 1.0

Green Sprangletop Weeping Lovegrass (Ermelo) Blue Grama (Hachita) Sand Dropseed (Borden Co.)

Sand Bluestem Purple Prairie Clover

0.3 0.8 1.0 0.3 1.8 0.5

6 (Odessa) Feb. 1–May 15

Green Sprangletop (Van Horn) Sideoats Grama (South Texas) Blue Grama (Hachita) Galleta Grass (Viva) Shortspike Windmillgrass (Welder) Pink Pappusgrass (Maverick) Alkali Sacaton (Saltalk) Plains Bristlegrass (Catarina Blend) False Rhodes Grass (Kinney) Whiplash Pappusgrass (Webb) Arizona Cottontop (La Salle)

1.0 1.0 0.4 0.6 0.2 0.6 0.2 0.2 0.1 0.6 0.2

Green Sprangletop (Van Horn) Hooded Windmillgrass (Mariah) Blue Grama (Hachita) Hairy Grama (Chaparral) Sand Lovegrass (Mason) Sand Dropseed (Borden County) Indian Ricegrass (Rim Rock) Sand Bluestem (Cottle County) Little Bluestem (Pastura) Purple Prairie Clover (Cuero)

1.0 0.2 0.4 0.4 0.2 0.2 1.6 1.2 0.8 0.3

7 (San Angelo) Feb. 1–May 1

1.0 1.0 1.0 0.4 0.2 0.4 0.4 1.2 0.6 0.75 1.0

Green Sprangletop (Van Horn) Hooded Windmillgrass (Mariah) Shortspike Windmillgrass (Welder) Hairy Grama (Chaparral) Sand Lovegrass (Mason) Sand Dropseed (Borden County) Sand Bluestem (Cottle County) Partridge Pea (Comanche) Little Bluestem (OK Select) Englemann Daisy (Eldorado) Purple Prairie Clover (Cuero)

1.0 0.2 0.2 0.4 0.2 0.2 1.2 0.6 0.8 0.75 0.3

8 (Abilene) Feb. 1–May 15

1.0 1.0 1.0 0.4 0.2 0.4 0.4 1.2 0.6 0.75 1.0

Green Sprangletop (Van Horn) Hooded Windmillgrass (Mariah) Shortspike Windmillgrass (Welder) Hairy Grama (Chaparral) Sand Lovegrass (Mason) Sand Dropseed (Borden County) Sand Bluestem (Cottle County) Partridge Pea (Comanche) Little Bluestem (OK Select) Englemann Daisy (Eldorado) Purple Prairie Clover (Cuero)

1.0 0.2 0.2 0.4 0.2 0.2 1.2 0.6 0.8 0.75 0.3

9 (Waco) Feb. 1–May 15

1.0 1.0 1.0 0.4 0.2 0.8 0.6 0.75 1.3 0.2

1.0 0.2 0.2 0.4 1.0 0.2 0.2 0.6 0.8 0.75 0.3

10 (Tyler) Feb. 1–May 15

Green Sprangletop Bermudagrass Bahiagrass (Pensacola) Sideoats Grama (Haskell) Illinois Bundleflower

0.3 1.8 9.0 2.7 1.0

Green Sprangletop Bermudagrass Bahiagrass (Pensacola) Weeping Lovegrass (Ermelo) Sand Lovegrass Lance-Leaf Coreopsis

0.3 1.8 9.0 0.5 0.5 1.0

11 (Lufkin) Feb. 1–May 15

Green Sprangletop Bermudagrass Bahiagrass (Pensacola) Sideoats Grama (Haskell) Illinois Bundleflower

0.3 1.8 9.0 2.7 1.0

Green Sprangletop Bermudagrass Bahiagrass (Pensacola) Sand Lovegrass Lance-Leaf Coreopsis

0.3 2.1 9.0 0.5 1.0

Table 1 (continued) Permanent Rural Seed Mix

Sandy Soils Species and Rates (lb. PLS/acre)

12 (Houston) Jan. 15–May 15

Green Sprangletop Bermudagrass Sideoats Grama (Haskell) Little Bluestem (Native) Illinois Bundleflower

0.3 2.1 3.2 1.4 1.0

Green Sprangletop Bermudagrass Bahiagrass (Pensacola) Weeping Lovegrass (Ermelo) Lance-Leaf Coreopsis

0.3 2.4 10.5 1.0 1.0

13 (Yoakum) Jan. 15–May 15

Green Sprangletop (Van Horn) Sideoats Grama (South Texas) Texas Grama (Atascosa) Slender Grama (Dilley) Shortspike Windmillgrass (Welder) Halls Panicum (Oso) Plains Bristlegrass (Catarina Blend) Canada Wildrye (Lavaca) Illinois Bundleflower (Sabine) Purple Prairie Clover (Cuero)

1.0 1.0 1.5 1.0 0.3 0.2 0.2 2.0 1.3 0.6

Green Sprangletop (Van Horn) Hooded Windmillgrass (Mariah) Slender Grama (Dilley) Hairy Grama (Chaparral) Shortspike Windmillgrass (Welder) Purple Prairie Clover (Cuero) Partridge Pea (Comanche) Englemann Daisy (Eldorado)

1.0 0.4 1.0 0.8 0.2 0.6 0.6 1.0

14 (Austin) Feb. 1–May 15

Green Sprangletop (Van Horn) Sideoats Grama (South Texas) Texas Grama (Atascosa) Hairy Grama (Chaparral) Shortspike Windmillgrass (Welder) Little Bluestem (OK Select) Purple Prairie Clover (Cuero) Engelmann Daisy (Eldorado) Illinois Bundleflower (Sabine) Awnless Bushsunflower (Plateau)

1.0 1.0 1.0 0.4 0.2 0.8 0.6 0.75 1.3 0.2

1.0 0.2 0.2 0.4 1.0 0.2 0.2 0.6 0.8 0.75 0.3

15 (San Antonio) Feb. 1–May 1

Green Sprangletop (Van Horn) Sideoats Grama (South Texas) Texas Grama (Atascosa) Slender Grama (Dilley) Shortspike Windmillgrass (Welder) Pink Pappusgrass (Maverick) Halls Panicum (Oso) Plains Bristlegrass (Catarina Blend) False Rhodes Grass (Kinney) Hooded Windmillgrass (Mariah) Arizona Cottontop (La Salle)

1.0 1.0 1.0 1.0 0.2 0.6 0.2 0.2 0.1 0.2 0.2

Green Sprangletop (Van Horn) Slender Grama (Dilley) Hairy Grama (Chaparral) Shortspike Windmillgrass (Welder) Pink Pappusgrass (Maverick) Plains Bristlegrass (Catarina Blend) Hooded Windmillgrass (Mariah) Multi-flowered False Rhoades Grass (Hidalgo) Arizona Cottontop (La Salle)

1.0 2.0 0.6 0.4 0.6 0.2 0.3 0.1 0.2

16 (Corpus Christi) Jan. 1–May 1

1.0 1.0 1.0 1.0 0.2 0.6 0.2 0.2 0.1 0.2 0.2

1.0 2.0 0.6 0.4 0.6 0.2 0.3 0.1 0.2

17 (Bryan) Feb. 1–May 15

Green Sprangletop Bermudagrass Sideoats Grama (Haskell) Little Bluestem (Native) Illinois Bundleflower

0.3 1.5 3.6 1.7 1.0

Green Sprangletop Bermudagrass Bahiagrass (Pensacola) Weeping Lovegrass (Ermelo) Sand Lovegrass Lance-Leaf Coreopsis

0.3 1.5 7.5 0.6 0.6 1.0

Sandy Soils Species and Rates (lb. PLS/acre)

18 (Dallas) Feb. 1–May 15

1.0 1.0 1.0 0.4 0.2 0.8 0.6 0.75 1.3 0.2

1.0 0.2 0.2 0.4 1.0 0.2 0.2 0.6 0.8 0.75 0.3

19 (Atlanta) Feb. 1–May 15

Green Sprangletop Bermudagrass Sideoats Grama (Haskell) Illinois Bundleflower

0.3 2.4 4.5 1.0

Green Sprangletop Bermudagrass Bahiagrass (Pensacola) Sand Lovegrass Lance-Leaf Coreopsis

0.3 2.1 7.5 0.6 1.0

20 (Beaumont) Jan. 15–May 15

Green Sprangletop Bermudagrass Sideoats Grama (Haskell) Illinois Bundleflower

0.3 2.7 4.1 1.0

Green Sprangletop Bermudagrass Bahiagrass (Pensacola) Sand Lovegrass Lance-Leaf Coreopsis

0.3 2.1 7.5 0.6 1.0

21 (Pharr) Jan. 15–May 15

1.0 1.0 1.0 1.0 0.2 0.6 0.2 0.2 0.1 0.2 0.2

0.6 0.4 0.6 0.2 0.3 0.1 0.2

22 (Laredo) Jan. 15–May 1

1.0 1.0 1.0 1.0 0.2 0.6 0.2 0.2 0.1 0.2 0.2

0.6 0.4 0.6 0.2 0.3 0.1 0.2

23 (Brownwood) Feb. 1–May 15

0.6 1.0 1.0 0.4 0.2 0.8 0.4 1.2 0.6 0.75 0.2

1.0 0.2 0.2 0.4 0.2 0.2 0.6 0.8 0.75 0.3

Sandy Soils Species and Rates (lb. PLS/acre)

24 (El Paso) Feb. 1–May 15

1.0 1.0 0.4 0.6 0.2 0.6 0.2 0.2 0.1 0.6 0.2

1.0 0.2 0.4 0.4 0.2 0.2 1.6 1.2 0.8 0.3

25 (Childress) Feb. 1–May 15

Green Sprangletop Sideoats Grama (El Reno) Blue Grama (Hachita) Western Wheatgrass Galleta Illinois Bundleflower

0.3 2.7 0.9 2.1 1.6 1.0

Green Sprangletop Weeping Lovegrass (Ermelo) Sand Dropseed (Borden Co.)

Sand Lovegrass Purple Prairie Clover

0.3 1.2 0.5 0.8 0.5

Table 2

Permanent Urban Seed Mix District and Planting Dates Clay Soils

Species and Rates (lb. PLS/acre) Sandy Soils

Species and Rates (lb. PLS/acre) 1 (Paris) Feb. 1–May 15

Green Sprangletop Bermudagrass Sideoats Grama (Haskell)

0.3 2.4 4.5

Green Sprangletop Bermudagrass

0.3 5.4

2 (Ft. Worth) Feb. 1–May 15

Green Sprangletop Sideoats Grama (El Reno) Bermudagrass Buffalograss (Texoka)

0.3 3.6 2.4 1.6

Green Sprangletop Sideoats Grama (El Reno) Bermudagrass Sand Dropseed (Borden Co.)

0.3 3.6 2.1 0.3

3 (Wichita Falls) Feb. 1–May 15

Green Sprangletop Sideoats Grama (El Reno) Bermudagrass Buffalograss (Texoka)

0.3 4.5 1.8 1.6

Green Sprangletop Sideoats Grama (El Reno) Bermudagrass Sand Dropseed (Borden Co.)

0.3 3.6 1.8 0.4

4 (Amarillo) Feb. 15–May 15

Green Sprangletop Sideoats Grama (El Reno) Blue Grama (Hachita) Buffalograss (Texoka)

0.3 3.6 1.2 1.6

Green Sprangletop Sideoats Grama (El Reno) Blue Grama (Hachita) Sand Dropseed (Borden Co.)

Buffalograss (Texoka)

0.3 2.7 0.9 0.4 1.6

5 (Lubbock) Feb. 15–May 15

Green Sprangletop Sideoats Grama (El Reno) Blue Grama (Hachita) Buffalograss (Texoka)

0.3 3.6

Sideoats Grama (El Reno) Blue Grama (Hachita) Sand Dropseed (Borden Co.)

Buffalograss (Texoka)

0.3 2.7 0.9 0.4 1.6

6 (Odessa) Feb. 1–May 15

Green Sprangletop Sideoats Grama (Haskell) Blue Grama (Hachita) Buffalograss (Texoka)

0.3 3.6

Sideoats Grama (Haskell) Sand Dropseed (Borden Co.)

Blue Grama (Hachita) Buffalograss (Texoka)

0.3 2.7 0.4 0.9 1.6

7 (San Angelo) Feb. 1–May 1

Green Sprangletop Sideoats Grama (Haskell) Buffalograss (Texoka)

0.3 7.2

Sideoats Grama (Haskell) Sand Dropseed (Borden Co.)

Blue Grama (Hachita) Buffalograss (Texoka)

0.3 3.2 0.3 0.9 1.6

8 (Abilene) Feb. 1–May 15

Green Sprangletop Sideoats Grama (Haskell) Blue Grama (Hachita) Buffalograss (Texoka)

0.3 3.6 1.2 1.6

Green Sprangletop Sand Dropseed (Borden Co.)

Sideoats Grama (Haskell) Blue Grama (Hachita) Buffalograss (Texoka)

0.3 0.3 3.6 0.8 1.6

9 (Waco) Feb. 1–May 15

Green Sprangletop Bermudagrass Buffalograss (Texoka) Sideoats Grama (Haskell)

0.3 1.8 1.6 4.5

Green Sprangletop Buffalograss (Texoka) Bermudagrass Sand Dropseed (Borden Co.)

0.3 1.6 3.6 0.4

Table 1 (continued) Permanent Rural Seed Mix

Table 2 (continued) Permanent Urban Seed Mix

1244522579C Highlight

Sandy Soils Species and Rates (lb. PLS/acre)

10 (Tyler) Feb. 1–May 15

Green Sprangletop Bermudagrass Sideoats Grama (Haskell)

0.3 2.4 4.5

Green Sprangletop Bermudagrass

0.3 5.4

11 (Lufkin) Feb. 1–May 15

Green Sprangletop Bermudagrass Sideoats Grama (Haskell)

0.3 2.4 4.5

Green Sprangletop Bermudagrass

0.3 5.4

12 (Houston) Jan. 15–May 15

Green Sprangletop Sideoats Grama (Haskell) Bermudagrass

0.3 4.5 2.4

Green Sprangletop Bermudagrass

0.3 5.4

13 (Yoakum) Jan. 15–May 15

Green Sprangletop Sideoats Grama (South Texas) Bermudagrass

0.3 4.5 2.4

Green Sprangletop Bermudagrass

0.3 5.4

14 (Austin) Feb. 1–May 15

Green Sprangletop Bermudagrass Sideoats Grama (South Texas) Buffalograss (Texoka)

0.3 2.4 3.6 1.6

Green Sprangletop Bermudagrass Buffalograss (Texoka)

0.3 4.8 1.6

15 (San Antonio) Feb. 1–May 1

Green Sprangletop Sideoats Grama (South Texas) Bermudagrass Buffalograss (Texoka)

0.3 3.6 2.4 1.6

Green Sprangletop Bermudagrass Buffalograss (Texoka)

0.3 4.8 1.6

16 (Corpus Christi) Jan. 1–May 1

Green Sprangletop Sideoats Grama (South Texas) Bermudagrass Buffalograss (Texoka)

0.3 3.6 2.4 1.6

Green Sprangletop Bermudagrass Buffalograss (Texoka)

0.3 4.8 1.6

17 (Bryan) Feb. 1–May 15

Green Sprangletop Bermudagrass Sideoats Grama (Haskell)

0.3 2.4 4.5

Green Sprangletop Bermudagrass

0.3 5.4

18 (Dallas) Feb. 1–May 15

Green Sprangletop Sideoats Grama (El Reno) Buffalograss (Texoka) Bermudagrass

0.3 3.6 1.6 2.4

Green Sprangletop Buffalograss (Texoka) Bermudagrass Sand Dropseed (Borden Co.)

0.3 1.6 3.6 0.4

19 (Atlanta) Feb. 1–May 15

Green Sprangletop Bermudagrass Sideoats Grama (Haskell)

0.3 2.4 4.5

Green Sprangletop Bermudagrass

0.3 5.4

20 (Beaumont) Jan. 15–May 15

Green Sprangletop Bermudagrass Sideoats Grama (Haskell)

0.3 2.4 4.5

Green Sprangletop Bermudagrass

0.3 5.4

21 (Pharr) Jan. 15–May 15

Green Sprangletop Sideoats Grama (South Texas) Buffalograss (Texoka) Bermudagrass

0.3 3.6 1.6 2.4

Green Sprangletop Buffalograss (Texoka) Bermudagrass Sand Dropseed (Borden Co.)

0.3 1.6 3.6 0.4

22 (Laredo) Jan. 15–May 1

Green Sprangletop Sideoats Grama (South Texas) Buffalograss (Texoka) Bermudagrass

0.3 4.5 1.6 1.8

Green Sprangletop Buffalograss (Texoka) Bermudagrass Sand Dropseed

0.3 1.6 3.6 0.4

23 (Brownwood) Feb. 1–May 15

Green Sprangletop Sideoats Grama (Haskell) Bermudagrass Blue Grama (Hachita)

0.3 3.6 1.2 0.9

Green Sprangletop Buffalograss (Texoka) Bermudagrass Sand Dropseed (Borden Co.)

0.3 1.6 3.6 0.4

24 (El Paso) Feb. 1–May 15

Green Sprangletop Sideoats Grama (South Texas) Blue Grama (Hachita) Buffalograss (Texoka)

0.3 3.6 1.2 1.6

Green Sprangletop Buffalograss (Texoka) Sand Dropseed (Borden Co.)

Blue Grama (Hachita)

0.3 1.6 0.4 1.8

25 (Childress) Feb. 1–May 15

Green Sprangletop Sideoats Grama (El Reno) Blue Grama (Hachita) Buffalograss (Texoka)

0.3 3.6 1.2 1.6

Green Sprangletop Sand Dropseed (Borden Co.)

Buffalograss (Texoka) Bermudagrass

0.3 0.4 1.6 1.8

1244522579C Highlight

Table 3 Temporary Cool Season Seeding

Districts Dates Seed Mix and Rates

(lb. PLS/acre)

Paris (1), Amarillo (4), Lubbock (5), Dallas (18) September 1–November 30 Tall Fescue Western Wheatgrass Wheat (Red, Winter)

4.5 5.6

Odessa (6), San Angelo (7), El Paso (24) September 1–November 30 Western Wheatgrass Wheat (Red, Winter)

8.4

Waco (9), Tyler (10), Lufkin (11), Austin (14), San Antonio (15), Bryan (17), Atlanta (19)

September 1–November 30 Tall Fescue Oats Wheat

4.5

Houston (12), Yoakum (13), Corpus Christi (16), Beaumont (20), Pharr (21), Laredo (22)

September 1–November 30 Oats 72

Ft. Worth (2), Wichita Falls (3), Abilene (8), Brownwood (23), Childress (25)

September 1–November 30 Tall Fescue Western Wheatgrass Cereal Rye

4.5 5.6

Table 4

Temporary Warm Season Seeding Districts Dates Seed Mix and Rates

(lb. PLS/acre) All May 1–August 31 Foxtail Millet 34

2.2. Fertilizer. Use fertilizer in conformance with Article 166.2., “Materials.”

2.3. Vegetative Watering. Use water that is clean and free of industrial wastes and other substances harmful to the growth of vegetation.

2.4. Mulch.

2.4.1. Straw or Hay Mulch. Use straw or hay mulch in conformance with Section 162.2.5., “Mulch.”

2.4.2. Cellulose Fiber Mulch. Use only cellulose fiber mulches that are on the Approved Products List, Erosion Control Approved Products. (http://www.txdot.gov/business/resources/erosion-control.html) Submit one full set of manufacturer’s literature for the selected material. Keep mulch dry until applied. Do not use molded or rotted material.

2.5. Tacking Methods. Use a tacking agent applied in accordance with the manufacturer’s recommendations or a crimping method on all straw or hay mulch operations. Use tacking agents as approved or as specified on the plans.

3. CONSTRUCTION

Cultivate the area to a depth of 4 in. before placing the seed unless otherwise directed. Use approved equipment to vertically track the seedbed as shown on the plans or as directed. Cultivate the seedbed to a depth of 4 in. or mow the area before placement of the permanent seed when performing permanent seeding after an established temporary seeding. Plant the seed specified and mulch, if required, after the area has been completed to lines and grades as shown on the plans.

3.1. Broadcast Seeding. Distribute the seed or seed mixture uniformly over the areas shown on the plans using hand or mechanical distribution or hydro-seeding on top of the soil unless otherwise directed. Apply the mixture to the area to be seeded within 30 min. of placement of components in the equipment when seed and water are to be distributed as a slurry during hydro-seeding. Roll the planted area with a light roller or other suitable equipment. Roll sloped areas along the contour of the slopes.

3.2. Straw or Hay Mulch Seeding. Plant seed according to Section 164.3.1., “Broadcast Seeding.” Apply straw or hay mulch uniformly over the seeded area immediately after planting the seed or seed mixture. Apply http://www.txdot.gov/business/resources/erosion-control.html straw mulch at 2 to 2.5 tons per acre. Apply hay mulch at 1.5 to 2 tons per acre. Use a tacking method over the mulched area.

3.3. Cellulose Fiber Mulch Seeding. Plant seed in accordance with Section 164.3.1., “Broadcast Seeding.”

Apply cellulose fiber mulch uniformly over the seeded area immediately after planting the seed or seed mixture at the following rates.

Sandy soils with slopes of 3:1 or less—2,500 lb. per acre.

Sandy soils with slopes greater than 3:1—3,000 lb. per acre.

Clay soils with slopes of 3:1 or less—2,000 lb. per acre.

Clay soils with slopes greater than 3:1—2,300 lb. per acre.

Cellulose fiber mulch rates are based on dry weight of mulch per acre. Mix cellulose fiber mulch and water to make a slurry and apply uniformly over the seeded area using suitable equipment.

3.4. Drill Seeding. Plant seed or seed mixture uniformly over the area shown on the plans at a depth of 1/4 to 1/3 in. using a pasture or rangeland type drill unless otherwise directed. Plant seed along the contour of the slopes.

3.5. Straw or Hay Mulching. Apply straw or hay mulch uniformly over the area as shown on the plans. Apply straw mulch at 2 to 2.5 tons per acre. Apply hay mulch at 1.5 to 2 tons per acre. Use a tacking method over the mulched area.

Apply fertilizer in conformance with Article 166.3., “Construction.” Seed and fertilizer may be distributed simultaneously during “Broadcast Seeding” operations, provided each component is applied at the specified rate. Apply half of the required fertilizer during the temporary seeding operation and the other half during the permanent seeding operation when temporary and permanent seeding are both specified for the same area.

Water the seeded areas at the rates and frequencies as shown on the plans or as directed.

4. MEASUREMENT

This Item will be measured by the square yard or by the acre.

5. PAYMENT

The work performed and the materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Broadcast Seeding (Perm)” of the rural or urban seed mixture and sandy or clay soil specified, “Broadcast Seeding (Temp)” of warm or cool season specified, “Straw or Hay Mulch Seeding (Perm)” of the rural or urban seed mixture and sandy or clay soil specified, “Straw or Hay Mulch Seeding (Temp)” of warm or cool season specified, “Cellulose Fiber Mulch Seeding (Perm)” of the rural or urban seed mixture and sandy or clay soil specified, “Cellulose Fiber Mulch Seeding (Temp)” of warm or cool season specified, “Drill Seeding (Perm)” of the rural or urban seed mixture and sandy or clay soil specified, “Drill Seeding (Temp)” of warm or cool season specified, and “Straw or Hay Mulching.” This price is full compensation for furnishing materials, including water for hydro-seeding and hydro-mulching operations, mowing, labor, equipment, tools, supplies, and incidentals. Fertilizer will not be paid for directly but will be subsidiary to this Item. Water for irrigating the seeded area, when specified, will be paid for under Item 168, “Vegetative Watering.”

Item 164

1. Description

2. Materials

2.2. Fertilizer. Use fertilizer in conformance with Article 166.2., “Materials.”

2.3. Vegetative Watering. Use water that is clean and free of industrial wastes and other substances harmful to the growth of vegetation.

2.4. Mulch.

2.4.1. Straw or Hay Mulch. Use straw or hay mulch in conformance with Section 162.2.5., “Mulch.”

3. Construction

3.3. Cellulose Fiber Mulch Seeding. Plant seed in accordance with Section 164.3.1., “Broadcast Seeding.” Apply cellulose fiber mulch uniformly over the seeded area immediately after planting the seed or seed mixture at the following rates.

4. Measurement

5. Payment

File details come from the government source that posted it. Updated Nov 18, 2021.