**November 21, 1997**

**Contract \# TW-0928**

**SPECIAL SPECIFICATION**

**SECTION 02935-S**

**[NATIVE GRASS SEEDING]{.underline}**

[PART 1 - GENERAL]{.underline} Page

1.01 Scope 2

1.02 Applicable Standards 2

1.03 Qualifications 2

1.04 Coordination 2

1.05 Submittals 2

1.06 Protection and Maintenance of Native Grasses 3

[PART 2 - PRODUCTS]{.underline}

2.01 Seed 4

2.02 Mulch 4

2.03 Fertilizer 4

2.04 Polyacrylamide 5

2.05 Enzymatic Agent 5

2.06 Organic Amendment 5

[PART 3 - EXECUTION]{.underline}

3.01 Soil Preparation 7

3.02 Fertilization and Enzyme Application 7

3.03 Seeding & Irrigation 7

3.04 Mulching 8

3.05 Inspection for Native Grasses 8

**SPECIAL SPECIFICATION**

**SECTION 02935-S**

**[NATIVE GRASS SEEDING]{.underline}**

[PART 1 - GENERAL]{.underline}

1.01 [SCOPE]{.underline}

> A. Furnish all labor, materials, and equipment necessary for
> preparation of seedbed, installation of seed, mulch, and related work
> specified herein.

1.02 [APPLICABLE STANDARDS]{.underline}

> A. All native grass seed shall be certified by state of origin. The
> certification authority for the state of New Mexico is the New Mexico
> Crop Improvement Association.

1.03 [QUALIFICATIONS]{.underline}

> A. All work specified herein shall be performed by a licensed
> landscape contractor experienced with the type and scale of work
> required, which includes mulching, and having equipment and personnel
> adequate to perform the work satisfactorily.

1.04 [COORDINATION]{.underline}

> A. Determine the acceptability of subgrade preparation prior to the
> start of native grass seeding operations. Protect all existing items
> to remain and new work of other trades to ensure proper timing of each
> phase of work.

1.05 [SUBMITTALS]{.underline}

> A. Proposed source of all native grass and shrub seed which shall
> indicate the location from which the seed was harvested.
>
> B. Sources of supply for mulch and fertilizer.
>
> C. Seed bag tags and weights per bag and copies of invoices identified
> by project name.
>
> D. Submit in accordance with Specification 1300.

1.06 [PROTECTION AND MAINTENANCE OF NATIVE GRASSES]{.underline}

> A. General: Protect and care for seeded areas until final acceptance
> of the work. Repair any damage to seeded areas caused by pedestrian or
> vehicular traffic or vandalism.
>
> B. Protection and Maintenance of Native Seed in Irrigated Areas: For
> areas where temporary irrigation is provided, protect and maintain
> native seed areas until uniform germination and growth is established.
> At that time, the area will be accepted by the SDR if no void or bare
> areas greater than 25 square inches occur within the seeded area. If
> these standards are not met the area shall be reseeded and maintained
> until final acceptance. Remove tumbleweed, Russian Thistle and other
> nuisance, non-grassy weeds during the maintenance period.

[PART 2 - MATERIALS]{.underline}

2.01 [SEED]{.underline}

> A. All native grass seed shall be obtained from sources in New Mexico
> unless proof is provided that a particular seed is unavailable within
> the state.
>
> B. Contractor shall furnish certification showing origin of all seed
> and pure live seed (P.L.S.) purity times percent germination. Each bag
> of seed shall be tagged and sealed by the seed dealer in accordance
> with the State Department of Agriculture or other local certification
> authority within the state of origin. The tag or label shall indicate
> analysis of seed and date of analysis, which shall not be more than 9
> months prior to delivery date. Seed may be premixed by the seed dealer
> and appropriate data indicated on the bag label for each variety.
>
> C. The seed mix shall be as follows:
>
> Native Grass Seed
>
> [Common Name]{.underline} [Botanical Name]{.underline} [Seeding
> Rate]{.underline}
>
> Hachita Blue Grama Bouteloua Gracilis \"Hachita\" 4 lbs. PLS/1000 Sq.
> Ft.

2.02 [MULCH]{.underline}

> A. Hydromulch: Excel Fibermulch with tackifier as manufactured by
> American Excelsior Co.; 850 Avenue H East, P.O. Box 5067, Arlington,
> Texas, 76001, (817) 640-1555, local phone (505) 345-7806, or an
> approved equivalent mulch with tackifier.
>
> B. Tackifier: Exact-Tak tackifier as manufactured by American
> Excelsior Co.; 850 Avenue H East, P.O. Box 5067, Arlington, Texas,
> 76001, (817) 640-1555, local phone (505) 345-7806, or an approved
> equivalent tackifier for straw or hay mulch.

C. Substitutions are allowed only under provisions of section 1600.

2.03 [FERTILIZER]{.underline}

> A. Slow release nitrogen: Provide urea formaldehyde applied at 38 lbs.
> actual nitrogen per acre.
>
> B. Fast release nitrogen: Provide ammonium sulphate applied at 40 lbs.
> actual nitrogen per acre.
>
> C. Phosphorous: Provide P205 (phosphoric acid) applied at the rate of
> 46 lbs. per acre.
>
> D. Sulphur: Provide in water soluble form applied at 48 lbs. per acre.

2.04 [POLYACRYLAMIDE:]{.underline}

> A. Provide a granular form of a cross-linked polyacrylamide.
> Polyacrylate materials are not acceptable. The following are
> considered approved:
>
> Stockosorb 300F: Organic Technology Inc.
>
> 2017 Skyline NE, Suite B
>
> Albuquerque, New Mexico 87123
>
> \(505\) 291-1100, (505) 291-1400, Fax (505) 271-1600
>
> Polyacrylamide: Western Polyacrylamide, Inc.,
>
> P.O. Box 790
>
> Castle Rock, Colorado 80104,
>
> \(303\) 688-3814
>
> Terra Sorb HB: American Excelsior
>
> 4019 Edith Blvd. N.E.
>
> P.O. Box 6494
>
> Albuquerque, New Mexico 87197

2.05 [ENZYMATIC AGENT:]{.underline}

> BioMax or SuperBio as available from :
>
> Organic Technology Inc.
>
> 2017 Skyline NE, Suite B
>
> Albuquerque, New Mexico 87123
>
> \(505\) 291-1100, (505) 291-1400, Fax (505) 271-1600
>
> or an approved equivalent enzymatic agent. Apply BioMax or SuperBio at
> a rate of 5 gallons per acre, diluted with 10 gallons or more of
> water.

2.06 [ORGANIC AMENDMENT:]{.underline}

> OMNI as available from:
>
> Western Organic Inc.
>
> Albuquerque, New Mexico 87125
>
> \(505\) 877-8670
>
> Apply at a rate of 2\" loose depth.
>
> New Mexico Compost is available from:
>
> New Mexico Compost Products
>
> from Soilutions
>
> Compost Site: 9008 Bates Road, SE
>
> Albuquerque, New Mexico 87105
>
> \(505\) 877-0220
>
> Apply at a rate of 1" loose depth.

[PART 3 - EXECUTION]{.underline}

3.01 [SOIL PREPARATION]{.underline}

> A. Clear areas for seeding of all debris. Acceptability of the grades
> shall be determined by the SDR prior to seed bed preparation.
>
> B. Prepare the seed bed to a minimum depth of 8 inches by tilling with
> a plow, ripper, rotovator or disc. All competitive vegetation, with
> the exception of existing shrub material (including Chamisa, 4-Wing
> Salt Bush, and others) shall be uprooted during seed bed preparation
> and the soil shall be uniformly worked to a surface free of clods,
> large stones of over 1/2 inch in any dimension, or other foreign
> material that would interfere with the seeding operations.
>
> C. Till cross-linked polyacrylamide into the top 8\" of the soil at a
> rate of 7 pounds per 1000 square feet. Till in organic amendment into
> the top 8\" of the soil.
>
> D. Tilling must be performed across the slope when practical and shall
> be performed in two directions whenever one is insufficient to
> adequately break up the soil in the SDR\'s opinion. Tilling shall not
> occur when the wind is over 10 mph and is causing a dust problem to
> adjoining areas.
>
> E. The extent of seed bed preparation shall not exceed the area on
> which the entire seeding operation can be accomplished to such
> prepared seed bed within a 24 hour period.
>
> F. Use extreme caution when disking near shallow buried irrigation
> piping. Repair any piping damaged during disking or seeding operations
> noted below.
>
> G. Irrigate prepared soil area for 4 weeks at the rate of 2
> cycles/day. See chart in section 3.03 for run times. The intent of
> watering is to sprout all weed seeds in the soil. Spray all weeds with
> Round-up or remove all weeds at the end of 4 weeks. If the area is
> sprayed with Round-up, wait 2 weeks before seeding.

3.02 [FERTILIZATION AND ENZYME APPLICATION]{.underline}

> A. Apply fertilizer and enzymatic treatment of the type and
> formulation and rate of application as designated uniformly to the
> prepared seed bed.

3.03 [SEEDING & IRRIGATION]{.underline}

> A. Seeding shall be accomplished only between May 15th and July 1st
> unless specific permission in writing is issued by the SDR to allow
> seeding before or after these dates.
>
> B. Broadcast seeding shall be employed utilizing a rotary spreader or
> a seeder box with a gear feed mechanism. Rice hulls and other fillers
> shall be used to prevent uneven separation of lighter seed.
> Immediately following the seeding operation, the seedbed shall be
> lightly raked or chained to provide approximately 1/2\" cover of soil
> over most of the seed.
>
> C. Suggested Irrigation Schedule for Installation and Establishment of
> Blue Grama Native Grass

+-------------+-------------+-------------+-------------+------------+
| Month       | Pop up      |             | Gear Driven |            |
|             | Sprayhead   |             | Head        |            |
+-------------+-------------+-------------+-------------+------------+
|             | Cycles/Day  | Run Time of | Cycles/Day  | Run Time   |
|             |             |             |             | of Cycle   |
|             |             | Cycle       |             |            |
+-------------+-------------+-------------+-------------+------------+
| April (weed | 2           | 30 minutes  | 2           | 1 hour     |
| e           |             |             |             |            |
| radication) |             |             |             |            |
+-------------+-------------+-------------+-------------+------------+
| May 15-May  | 4           | 30 minutes  | 4           | 1 hour     |
| 30          |             |             |             |            |
|             |             |             |             |            |
| (seed       |             |             |             |            |
|             |             |             |             |            |
| est         |             |             |             |            |
| ablishment) |             |             |             |            |
+-------------+-------------+-------------+-------------+------------+
| June        | 2           | 30 minutes  | 2           | 1 hour     |
+-------------+-------------+-------------+-------------+------------+
| July        | 2           | 30 minutes  | 2           | 1 hour     |
+-------------+-------------+-------------+-------------+------------+
| August      | 1           | 30 minutes  | 1           | 1 hour     |
+-------------+-------------+-------------+-------------+------------+
| September   | 1 every 3   | 30 minutes  | 1 every 3   | 1 hour     |
|             | days        |             | days        |            |
+-------------+-------------+-------------+-------------+------------+

3.04 [MULCHING]{.underline}

> A. Mulch: Mulch all seeded areas after seeding operations unless
> otherwise shown on the drawings. Hydromulch the seeded areas. All
> areas are to receive a tackifier.
>
> B. Hydromulch: Install with equipment suitable for the task of
> application of the hydromulch and tackifier and as recommended by the
> hydromulch manufacturer. Apply hydromulch with an integral tackifier
> at a rate of 1,000 pounds per acre.

3.05 [INSPECTION FOR NATIVE GRASSES]{.underline}

> A. The following inspection shall be the minimum required inspections
> to native grass during the course of construction. Additional
> inspections shall be made at any time at the discretion of the SDR.
>
> B. Notify the SDR in writing 48 hours in advance of each required
> inspection.
>
> C. The sequence of required inspections shall not be changed from the
> sequence listed below. Do not proceed with work of the next sequence
> without written approval of the work of the previous sequence. Payment
> will not be approved for items which have not bee inspected and
> approved in writing.
>
> 1\. Automatic irrigation system where required shall be installed,
> tested, and approved in accordance with Section 02810.
>
> 2\. Each phase of soil preparation shall be inspected in process.
>
> 3\. Finish grade shall be inspected.
>
> 4\. Seed shall be inspected prior to seeding.
>
> 5\. Seeding operations shall be monitored.
>
> 6\. Seeded areas shall be inspected after completion.
>
> 7\. Seeded areas shall be inspected at the end of the maintenance
> period.

END OF SECTION