Environmental Assessment

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COMPARISON OF ALTERNATIVES CHAPTER 2 COMPARISON OF THE ALTERNATIVES ___________________________________ Description of Treatments Similar to Alternatives 2 (Proposed Action) and 3: Table 2-6 describes the treatments that are proposed and overall objectives for these treatments. Table 2-6 Description of Thinning and Fuels Treatments and their Objectives. TREATMENT TYPE TREATMENTS OBJECTIVES Fuel Treatment Only Vegetation Treatment with Planting or Seeding Vegetation Treatment with no Planting or Seeding Non-commercial Harvest Mechanical Shrub Treatment 20 ; Underburn 21 Pretreatment 22 Commercial Harvest 23 ; Noncommercial Harvest 24 ; Mechanical Shrub Treatment; Underburn; Subsoil; Planting or Seeding; Trap Gophers; Tube Seedlings Commercial Harvest; Noncommercial Thinning; Mechanical Shrub Treatment; Underburn; Subsoiling; Removal of Encroaching Trees Non-commercial Thinning; Mechanical Shrub Treatment; Underburn 2-39 Reduce natural fuels to reduce risk of wildfire; Provide fuel break/safety corridor; Create strategic fuel breaks including along the wildland/urban interface; Reintroduce fire into fire-associated ecosystem. Reduce natural fuels to reduce risk of wildfire; Promote deer hiding cover and vertical stand diversity; Maintain or increase ponderosa pine dominance; Maintain/accelerate ponderosa pine growth; Promote open, park-like stands; Reduce the risk of bark beetle attack. Reduce risk of bark beetle attack; Maintain/ accelerate ponderosa pine growth; Promote open, park-like stands; Reduce natural fuels to reduce risk of wildfire; Provide fuel break/safety corridor; Create strategic fuel breaks Reduce natural fuels to reduce risk of wildfire; Reduce the risk of bark beetle attack; Provide fuel break/ safety corridor; Create strategic fuel breaks; Improve forest health. 20 Mechanical Shrub Treatment: mowing of shrubs using a wheeled or crawler tracker leaving vegetation at a height of not less than six to eight (6-8) inches. 21 Underburn: burning of vegetation, generally shrubs, small trees, grasses, and slash materials beneath overstory trees. Usually done after the felling of understory trees (trees generally less than four (4) inches in diameter measured 4.5 feet above the ground (dbh). Includes the burning of vegetation beneath and within the dripline of overstory trees. 22 Pretreatment cutting of trees four (4) inches dbh and smaller prior to applying other fuel reduction treatments such as mowing or burning. 23 Commercial Harvest: removal of trees to 21 inches DBH under a commercial timber sale contract. May include regeneration harvest – clearcut or shelterwood – for the purpose of regeneration by either planting or natural seeding; or thinning for the purpose of maintaining/enhancing growth and individual tree and stand health by reducing stocking to desired/specified levels. Trees exhibiting poor vigor, infected with disease, or subject to or being attacked by insects are priorities for removal. 24 Non-commercial Harvest: removal of trees less than eight (8) inches DBH to desired/specified stocking levels and may include the removal of trees to 16 inches DBH. Trees may be felled by hand (chain saws) or with other equipment. Market conditions may permit the removal of small diameter wood through a commercial timber sale contract.
COMPARISON OF ALTERNATIVES CHAPTER 2 Table 2-7 provides a tabular comparison of actions proposed under each alternative, including Alternative 1 – No Action. All acreages, volumes, and distance figures are approximate. Unless otherwise noted, figures listed are acres. Table 2-7 Alternative Comparison. TREATMENT TYPE 2-40 ALTERNATIVE COMPARISON ALTERNATIVE 1 ALTERNATIVE 2 ALTERNATIVE 3 Gross Vol. MBF ESTIMATED HARVEST VOLUME 0 5,937 5,650 Gross Vol. CCF 0 11,568 11,000 Commercial Vol. - MBF 0 5,229 5,123 Commercial Vol. - CCF 0 10,178 9,963 Non-Commercial Vol. - MBF 0 708 523 Non-Commercial Vol. - CCF 0 1,390 1,040 VEGETATION TREATMENTS Small & Medium Tree harvest (Trees 8-21 inches DBH) Commercial Harvest w/Non-Commercial Harvest 0 2,355 2,210 W/Subsoiling Slash Treatment 0 24 44 Lop & Scatter 0 2,329 2,072 None Fuel Treatment 0 175 138 Underburn 0 908 478 Burning beneath Dripline 0 632 1,713 Machine Pile & Burn 0 43 0 None 0 135 19 Commercial Harvest w/o Non-Commercial Harvest 0 1,620 1,645 W/Subsoiling Slash Treatment 0 3 3 Lop & Scatter 0 1,468 604 None Fuel Treatment 0 152 1,041 Underburn 0 794 253 Burning beneath Dripline 0 691 178 None 0 783 1,214 Regeneration Harvest 0 146 0 W/Subsoiling 0 22 0 Slash Treatment – Machine Pile & Burn 0 146 0 W/Planting 25 0 49 0 W/Natural Regeneration 0 108 0 25 Includes approximately ¼ acre within the boundaries of the Pine Mountain Observatory special use permit area. Alternative 2 also includes planting approximately 11 acres of existing openings.
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United States Department of Agricul
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Abstract: The Opine Planning Area i
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PROJECT LOCATION CHAPTER 1 Figure 1
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PURPOSE AND NEED CHAPTER 1 commerci
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PLANNING DIRECTION - MANAGEMENT ALL
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AFFECTED ENVIRONMENT & ENVIRONMENTA
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AGENCIES AND PUBLICS CONSULTED CHAP
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Environmental Assessment

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