Integrated Training Area Management EA and Final FNSI

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Third paragraph should read, "These types of stream bank stabilizationtechniques may be used..."Fourth paragraph, the sentence that reads, "Riprap protects soil fromerosion and is often used on steep slopes built with fill materials thatare subject to harsh weather or seepage." Riprap will not remain stableon slopes steeper than 1.5:1 and must be a gradation of size and shape.Sentence, "It is used where water is turbulent and fast flowing andwhere soils may erode under the design flow conditions." I have seenmany rip rap structures fail under these conditions - it is not a fixall and should not be represented as such! Rip rap structures speed upwater energy, harden the bank and bed surface and can have negativeeffects on downstream banks.The OHMP would like to consider all other options, before agreeing to arip rap structure.Page C2-80. The first sentence on this page should read, "...is usuallyapplied in an even layer along the stream bank." The second sentence ofthis paragraph is confusing - should it be in this section?General comment for this section - vegetation (e.g., live willowstaking, fascine bundles, brush mats and layering) above the rip rap isalways recommended and a preferred technique for these types ofprojects.(25) Page C2-81. B. Rock Armoring. Within the first paragraph, pleaseinclude language stating that these structures are always "keyed-in" atboth the upstream and downstream end of the structure and most often,placed on top of permeable geotextile fabric.Second paragraph, please add to the end of the first sentence, "...(CAT320) from the top of the bank." The next sentence should be deleted --all work should be conducted from the top of the bank and equipmentin-stream (working or crossing) should be minimized if allowed at all.Last paragraph, please change to read, "...and cutting a trench at thetoe of the bank below..."(26) Page C2-82. II. Geotextile. First sentence change the word "toe"to "trench" and delete the word "cut".(27) Page C-82. C. Barb Dikes or Thalweg Deflectors. Could we givethis structure one name and use it throughout? Most agencies recognizethis type of structure as a "rock barb."First paragraph - Please state somewhere in this paragraph that thesestructures must be designed by an experienced hydrologist/engineer.Second paragraph, the second sentence should read, "Silt fences may beinstalled during construction to prevent downstream siltation." Siltfencing is not the only, and not always the best, erosion control methodavailable. Please add to the end of the third sentence, "...and toensure correct placement."_____________________________________________________________________________________________Environmental AssessmentUnited States Army Alaska, Integrated Training Area Management ProgramManagement Plan E-12
The third paragraph seems too specific; it includes information thatwould be site specific and probably different at every site. Again,that kind of information/design would need to come from the engineer.If you feel it needs to be included, maybe more general informationwould be better.(28) Page C2-83. D. Root Wad Stabilization. The first paragraph refersto "damaged road area" - this is confusing - I assume you mean streambank.Again, the text in this section may be too detailed/specific and will bedifferent from site to site. General information like including riprapfor a base or to help anchor the boles and anchoring boles with deadmananchors or other such devices should be included.(29) Page C2-85. F. Vegetative Matting. Please see (17) commentsabove.(30) Page C2-86. G. Brush Layering. Please see (16) comments above.(31) Page C2-87. C2-31. Vegetation Cutting and Clearing (Mechanical).Please add to this section text referring to maintaining a riparianbuffer near water bodies when clearing if possible.One last general comment, brush mattressing has proven to be asuccessful bank stabilization method as well.If these comments are acceptable, please incorporate them into the BMPtable (Appendix C3) as well.Thank you for the opportunity to comment and I apologize for thelateness.Sincerely,Nancy IhlenfeldtHabitat BiologistAK Department of Natural ResourcesOffice of Habitat Management & Permitting Fairbanks Office907-459-7287_____________________________________________________________________________________________Environmental AssessmentUnited States Army Alaska, Integrated Training Area Management ProgramManagement Plan E-13
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DEPARTMENT OF THE ARMYUNITED STATES
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TABLE OF CONTENTSCHAPTER 1: PURPOSE
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Table 3.9 Summary of Impacts to Hum
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and Training Land Program, the rang
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• Establish a defined land condit
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Donnelly Training AreaDonnelly Trai
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determine whether additional NEPA a
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Table 2.2 Summary of Environmental
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CHAPTER 3: DESCRIPTION OF THE AFFEC
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Maneuver Trail Maintenance and Upgr
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Mungoven 2001). Engineering soil ty
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projects and would result in wide,
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growth. Wind and sand fences would
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iological impacts of military train
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willow scrub communities are common
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disturbed. Further, hardening low w
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disturbance or removal, best manage
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SRAThrough the SRA program, soldier
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Ship Creek (from the Glenn Highway
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effective site drainage. Required p
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Game 1998). More information on wil
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Fort Wainwright and associated land
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Long-term beneficial impacts to wil
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1998).The Alaska Interagency Wildla
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Prescribed burns, mechanical thinni
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unplanned fires, soldiers are direc
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USARAK also implemented the USARTRA
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LRAM projects beneficial to public
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Cumulative ImpactsPast military act
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Two surveys conducted on Yukon Trai
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LRAM activities under Alternative 1
Page 67 and 68: 3.9.1 Affected EnvironmentFort Rich
Page 69 and 70: SRA program, which educates soldier
Page 71 and 72: 3.10.2 Environmental ConsequencesAl
Page 73 and 74: Fort Richardson receives few compla
Page 75 and 76: Table 3.11 Summary of Impacts 1 to
Page 77 and 78: oads and hauling fill and rock mate
Page 79 and 80: CHAPTER 4: PREPARERS AND CONTRIBUTO
Page 81 and 82: Benson, A.M. 1999. Distribution of
Page 83 and 84: Neely, R. J. 2001. Early Mining His
Page 85 and 86: CHAPTER 6: AGENCIES AND INDIVIDUALS
Page 87 and 88: Project NameBulldog TrailWidening P
Page 89 and 90: Project NameYukon TrainingArea Demo
Page 91 and 92: Project NameYukon TrainingArea Firi
Page 93 and 94: Project NameEddy Drop ZoneVegetatio
Page 95 and 96: Project Name33 Mile LoopRoad Shortc
Page 97 and 98: APPENDIX B: BEST MANAGEMENT PRACTIC
Page 99 and 100: Sediment Trap(Permanent) SeedingSil
Page 101 and 102: APPENDIX C: SAMPLE RECORD OF ENVIRO
Page 103 and 104: APPENDIX D: ITAM PROJECT ASSESSMENT
Page 105 and 106: Fire ManagementYes No□ □ Could
Page 107 and 108: APPENDIX E: AGENCY COMMENTSThe foll
Page 109 and 110: ___________________________________
Page 111 and 112: ___________________________________
Page 113 and 114: Sent: Monday, June 13, 2005 5:00 PM
Page 115 and 116: Second paragraph - I do not underst
Page 117: sentence could read, "The trees are
Page 121: USARAK does not have a current five
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Integrated Training Area Management EA and Final FNSI

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