Category:802 Mulching - Revision history

Smithk: Per Env'l, guidance for mulching reflects the new standard seed mixes, fertilizer, and lime rates (as shown in the new Standard Plan 805.00 Seeding) will promote a more effective vegetative establishment. Mulching will not be required for final seeded areas where temporary seeding is planned for temporary stabilization of areas to receive warm season grasses.

2022-04-19T17:27:55Z

Per Env'l, guidance for mulching reflects the new standard seed mixes, fertilizer, and lime rates (as shown in the new Standard Plan 805.00 Seeding) will promote a more effective vegetative establishment. Mulching will not be required for final seeded areas where temporary seeding is planned for temporary stabilization of areas to receive warm season grasses.

← Older revision		Revision as of 12:27, 19 April 2022
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	==~~Construction Inspection~~ Guidance for [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=12 Sec 802]==		==802.1 Design Guidance for [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=12 Sec 802]==

	===Description (Sec 802.1)===		===Description (Sec 802.1)===
			Mulch is a vital component to stabilization efforts necessary to establish vegetative cover in disturbed areas. All exposed areas to be seeded shall be covered with mulch, erosion control blanket, in accordance with [[806.1 Erosion Control Measures#806.1.10 Erosion Control Blankets and Turf Reinforcement Mats\|EPG 806.1.10 Erosion Control Blankets and Turf Reinforcement Mats]], or other commercially available products used to facilitate vegetative growth and reduce erosion and sedimentation such as fiber reinforced matrix (FRM) (see [[806.1 Erosion Control Measures#806.1.9 Fiber Reinforced Matrix\|EPG 806.1.9 Fiber Reinforced Matrix]]).

	~~Mulch is a~~ temporary ~~treatment~~, ~~and is used to prevent erosion~~ of ~~the ditch until~~ permanent ~~vegetation is established. Mulching is applied to check erosion~~, ~~preserve moisture~~, ~~and moderate soil temperatures. Reducing~~ the ~~impact~~ of ~~rain is a significant factor in checking erosion~~. ~~Mulch~~ is ~~the default type~~ of ~~ditch protection and is used in all ditches where sod, rock ditch liner, erosion control blankets or paving are not used~~.		===Planned Quantities (Sec 802.1.2) ===
			Areas to be temporary seeded, in accordance with Sec 806, or initial applications of permanent seeding, in accordance with Sec 805, shall be calculated to receive mulch to the nearest 1/10th of an acre. Mulching will not be required for final seeded areas where temporary seeding is planned for temporary stabilization of areas to receive warm season grasses.

	===Material (Sec 802.2)===		==802.2 Construction Inspection Guidance for [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=12 Sec 802]==

			===Description (Sec 802.2.1)===

			Mulch is a temporary ground cover treatment that provides multiple benefits to vegetation establishment. Mulching is applied to check erosion, preserve moisture, and moderate soil temperatures. Reducing the impact of rain is a significant factor in checking erosion. Mulch is the default type of ground cover protection and is used in all disturbed areas where sod, rock ditch liner, erosion control blankets, paving, or other permanent building materials are not used.

			===Material (Sec 802.2.2)===

			'''Vegetative Mulch (Sec 802.2.2.1)'''

	The contractor shall provide a written certification that the mulch is in compliance with the specification.		The contractor shall provide a written certification that the mulch is in compliance with the specification.

	'''Mulch Overspray (Sec 802.2.2)'''		'''Mulch Overspray (Sec 802.2.2.2)'''

	The contractor shall provide a manufacturer’s certification that the overspray is in compliance with the specifications.		The contractor shall provide a manufacturer’s certification that the overspray is in compliance with the specifications.
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	Mulch Overspray acceptance shall be by certification. The certification shall state that mulch overspray meets standard specifications and complies with contract requirements.		Mulch Overspray acceptance shall be by certification. The certification shall state that mulch overspray meets standard specifications and complies with contract requirements.

	===Construction Requirements (Sec 802.3)===		===Construction Requirements (Sec 802.2.3)===

	All seeded areas are mulched.		All seeded areas are mulched in conjunction with the initial application of temporary and permanent seeding.

	Proper application of mulch is critical keeping in mind that there is no constant relationship between weight and thickness. If the application is too light, the ground becomes susceptible to erosion and the lack of mulch would allow moisture necessary for plant growth to escape. If it is too heavy, the mulch will choke out any native plant species sowed. A lighter mulch application may be sufficient for moisture retention purposes on flat grades where erosion due to runoff is a minor threat. Slopes should have the specified applied rate. In areas more susceptible to runoff erosion, the contractor might elect to use a blanket to minimize erosion to control runoff damage while providing seed with a protective cover.		Proper application of mulch is critical keeping in mind that there is no constant relationship between weight and thickness. If the application is too light, the ground becomes susceptible to erosion and the lack of mulch would allow moisture necessary for plant growth to escape. If it is too heavy, the mulch will choke out any native plant species sowed. A lighter mulch application may be sufficient for moisture retention purposes on flat grades where erosion due to runoff is a minor threat. Slopes should have the specified applied rate. In areas more susceptible to runoff erosion, the contractor might elect to use a blanket to minimize erosion to control runoff damage while providing seed with a protective cover.
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	Areas where mulch has blown away usually identify a potential seeding failure. The contractor is responsible for the proper density of plants. Attention is warranted in the areas with thin mulch cover.		Areas where mulch has blown away usually identify a potential seeding failure. The contractor is responsible for the proper density of plants. Attention is warranted in the areas with thin mulch cover.

	===Method of Measurement (Sec 802.4)===		===Method of Measurement (Sec 802.2.4)===

	Mulch is ~~incidental~~ to the ~~seeding contract [http:~~/~~/www~~.~~modot.mo.gov/business/contractor_resources/biditemslisting.htm bid item]~~.		Mulch is measured to the 1/10th of an acre. Areas with vegetative cover from temporary seeding in warm season grass areas will not require mulching unless excessive bare areas exist with no vegetative cover or areas where original mulch no longer exists.

	===Basis of Payment (Sec 802.5)===		===Basis of Payment (Sec 802.2.5)===

	The contractor is responsible for proper plant density. ~~If a~~ lack of ~~a stand is due to sheet and rill damage, the repairs are~~ the responsibility of the contractor. If gully washouts are created by linear flow from outside the seeded areas, the contractor is not responsible for damage.		Mulch is paid at the contract unit price. The contractor is responsible to maintain mulch prior to acceptance, and for proper plant density. Areas that require mulch during overseeding operations due to lack of temporary vegetative growth or original mulch application shall be the responsibility of the contractor. If gully washouts are created by linear flow from outside the seeded areas, the contractor is not responsible for damage.

Smithk: updated link

2016-06-14T13:35:19Z

updated link

← Older revision		Revision as of 08:35, 14 June 2016
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	==Construction Inspection Guidance for [http://www.modot.~~mo.gov~~/business/standards_and_specs/~~Sec0802~~.pdf Sec 802]==		==Construction Inspection Guidance for [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=12 Sec 802]==

	===Description (Sec 802.1)===		===Description (Sec 802.1)===

Smithk: /* Material (Sec 802.2) */Per Physical Lab, an "acceptance statement" was added to clarify the method of acceptance for mulch overspray.

2012-08-20T14:56:45Z

Material (Sec 802.2): Per Physical Lab, an "acceptance statement" was added to clarify the method of acceptance for mulch overspray.

← Older revision		Revision as of 09:56, 20 August 2012
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	The contractor shall provide a manufacturer’s certification that the overspray is in compliance with the specifications.		The contractor shall provide a manufacturer’s certification that the overspray is in compliance with the specifications.

			Mulch Overspray acceptance shall be by certification. The certification shall state that mulch overspray meets standard specifications and complies with contract requirements.

	===Construction Requirements (Sec 802.3)===		===Construction Requirements (Sec 802.3)===

Smithk: article construction

2007-10-17T13:54:18Z

article construction

← Older revision		Revision as of 08:54, 17 October 2007
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	===Method of Measurement (Sec 802.4)===		===Method of Measurement (Sec 802.4)===

	Mulch is incidental to the seeding contract bid item.		Mulch is incidental to the seeding contract [http://www.modot.mo.gov/business/contractor_resources/biditemslisting.htm bid item].

	===Basis of Payment (Sec 802.5)===		===Basis of Payment (Sec 802.5)===

	The contractor is responsible for proper plant density. If a lack of a stand is due to sheet and rill damage, the repairs are the responsibility of the contractor. If gully washouts are created by linear flow from outside the seeded areas, the contractor is not responsible for damage.		The contractor is responsible for proper plant density. If a lack of a stand is due to sheet and rill damage, the repairs are the responsibility of the contractor. If gully washouts are created by linear flow from outside the seeded areas, the contractor is not responsible for damage.

EPG-Admin: remove reference to "Form T-634". It is no longer used.

2007-07-23T12:30:13Z

remove reference to "Form T-634". It is no longer used.

← Older revision		Revision as of 07:30, 23 July 2007
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	===Material (Sec 802.2)===		===Material (Sec 802.2)===

	The contractor shall provide a written certification that the mulch is in compliance with the specification~~. Vegetative mulch is to be reported on [[Form T-634]] by construction & materials personnel~~.		The contractor shall provide a written certification that the mulch is in compliance with the specification.

	'''Mulch Overspray (Sec 802.2.2)'''		'''Mulch Overspray (Sec 802.2.2)'''

EPG-Admin: add new article

2007-07-16T18:08:42Z

add new article

New page

==Construction Inspection Guidance for [http://www.modot.mo.gov/business/standards_and_specs/Sec0802.pdf Sec 802]==

===Description (Sec 802.1)===

Mulch is a temporary treatment, and is used to prevent erosion of the ditch until permanent vegetation is established. Mulching is applied to check erosion, preserve moisture, and moderate soil temperatures. Reducing the impact of rain is a significant factor in checking erosion. Mulch is the default type of ditch protection and is used in all ditches where sod, rock ditch liner, erosion control blankets or paving are not used.

===Material (Sec 802.2)===

The contractor shall provide a written certification that the mulch is in compliance with the specification. Vegetative mulch is to be reported on [[Form T-634]] by construction & materials personnel.

'''Mulch Overspray (Sec 802.2.2)'''

The contractor shall provide a manufacturer’s certification that the overspray is in compliance with the specifications.

===Construction Requirements (Sec 802.3)===

All seeded areas are mulched.

Proper application of mulch is critical keeping in mind that there is no constant relationship between weight and thickness. If the application is too light, the ground becomes susceptible to erosion and the lack of mulch would allow moisture necessary for plant growth to escape. If it is too heavy, the mulch will choke out any native plant species sowed. A lighter mulch application may be sufficient for moisture retention purposes on flat grades where erosion due to runoff is a minor threat. Slopes should have the specified applied rate. In areas more susceptible to runoff erosion, the contractor might elect to use a blanket to minimize erosion to control runoff damage while providing seed with a protective cover.

'''Acceptance'''

Areas where mulch has blown away usually identify a potential seeding failure. The contractor is responsible for the proper density of plants. Attention is warranted in the areas with thin mulch cover.

===Method of Measurement (Sec 802.4)===

Mulch is incidental to the seeding contract bid item.

===Basis of Payment (Sec 802.5)===

The contractor is responsible for proper plant density. If a lack of a stand is due to sheet and rill damage, the repairs are the responsibility of the contractor. If gully washouts are created by linear flow from outside the seeded areas, the contractor is not responsible for damage.