american samoa - University of Hawaii at Manoa Botany Department

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TABLE 6-6COMPARATIVE EVALUATIONRIPARIAN RESTORATION AND ENHANCEMENT OPPORTUNITIESLOWER VAIPITO STREAMOptionProjectCostResidentialLand UsesSubsistenceAgricultureFish &InvertebrateHabitatWetland/RiparianVegetationStreamBankStabilityFlood Hazards& PropertyDamage1 LC NBC NBC LB SB SB NBC2 NBC NBC NBC NBC LC NBC NBCNotes:Potential project benefits were rated by PPC as follows:SB Significant project benefitsLCMB Moderate project benefitsMCLB Limited project benefitsSCNBC No anticipated project benefits orundesirable consequencesLimited undesirable consequencesModerate undesirable consequencesSignificant undesirable project impactsSource: Pedersen Planning Consultants, 2000Recommended Option and Estimated Project CostThe restoration of the mangrove forest immediately upstream of the Vaipito Stream mouth(Option 1) is recommended for implementation. This wetland restoration project isrecommended because the project can provide significant improvements to wetland vegetation,enhance the adjoining recreational area, and possibly provide increased habitat for fish andinvertebrates.The costs associated with the restoration of the mangrove forest would primary be associatedwith the initial clearing of solid waste material from the lower reach of Vaipito Stream. Morespecifically, the cleanup would be made between the stream mouth and the Route 1 crossing ofVaipito Stream. The subsequent collection and planting of mangrove, ifi, and falaga treecuttings would be carried out by the ASCC Land Grant Program.These estimated cost associated with the initial clearing of the Vaipito Stream mouth and theupstream area would be $2,036 (Table 6-7). The planting of mangrove and native riparian treeswould cost an estimated $5,251 (Table 6-8). Consequently, the total project cost anticipatedfor the overall project is roughly $7,287.American Samoa Wetland/Stream Restoration and Enhancement PlanFebruary 2001, Vaipito Stream, Page 6-13
TABLE 6-7PRELIMINARY COST ESTIMATECLEARING OF LOWER VAIPITO STREAM MOUTH AND UPSTREAM AREALABORPersonnel Number Hours Hourly Rate ($) Cost ($)Supervisor 1 16 15 240Heavy Equip. Operator 1 16 13 208Laborer 2 16 6 192All Personnel 4 64 $640MATERIALSItem Quantity Unit Cost ($) Cost ($)Picks 3 15 45Sledge Hammers 3 25 75Shovel 3 22 66Weed-eaters 3 300 900Machetes 3 20 60Garbage Bags 20 boxes 5 100Wheel Barrows 3 50 150All Materials $1,396TOTAL LABOR AND MATERIALS $2,036Notes: Preliminary estimate assumes use of existing equipment that is owned by the ASG Department of PublicWorksSource: Pedersen Planning Consultants, 2000TABLE 6-8PRELIMINARY COST ESTIMATEPLANTING OF TREES UPSTREAM OF VAIPITO STREAM MOUTHLABORPersonnel Number Hours Hourly Rate ($) Cost ($)ASCC Plant Nursery Technician 1 104 10 1,040ASCC Field Crew Leader 1 12 8 96ASCC Field Crew Members 2 12 6 144All Personnel 4 140 $1,280MATERIALSItem Quantity Unit Cost ($) Cost ($)Native Riparian Trees 100 3 300Mangrove Trees 440 5 2,200Littoral/Coastal Plants 100 5 500Garbage Bags 20 boxes 5 100All Materials $3,100EQUIPMENTShovels 3 22 66Machetes 3 20 60Picks 3 15 45Wheel Barrows 2 50 100Weed-eaters 2 300 600All Equipment $871TOTAL LABOR AND MATERIALS $5,251Source: Pedersen Planning Consultants, 2000Long-Term Monitoring and Site Maintenance RequirementsAmerican Samoa Wetland/Stream Restoration and Enhancement PlanFebruary 2001, Vaipito Stream, Page 6-14
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Asili StreamAMERICAN SAMOAWETLAND/S
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American SamoaWetland/Stream Restor
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American Samoa Wetland/Stream Resto
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Figure 1-1Location of Potential Wet
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Onsite InvestigationsNovember 1999G
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Where appropriate, stream cross sec
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Chapter TwoTULA WETLANDLOCATIONTula
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Figure 2-2Tula WetlandExisting Cond
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Improved channelization of stormwat
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LAND USES IN THE VICINITY OF TULA W
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Figure 2-3Option 2: Detention of St
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Figure 2-4Option 3: Expansion of Ta
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Comparative Benefits and ImpactsPPC
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TABLE 2-4PRELIMINARY COST ESTIMATEP
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TABLE 2-5LONG-TERM RESOURCE MONITOR
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TABLE 2-6 (CONTINUED)FIELD MONITORI
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Chapter ThreeALAO WETLANDLOCATIONAl
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Figure 3-2Taufusi MarchExisting Con
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Figure 3-3FEMA 100-Year Flood Plain
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East Portion of the MarshThe impact
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WETLAND RESTORATION AND ENHANCEMENT
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The availability of new, blight-res
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Long-Term Monitoring and Site Maint
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TABLE 3-7FIELD MONITORING WORKSHEET
Page 53 and 54: Recommended monitoring stations or
Page 55 and 56: Figure 4-1Location MapAoa Village W
Page 57 and 58: No stream flow estimates are availa
Page 59 and 60: Fresh-Water SwampThe fresh-water sw
Page 61 and 62: ecome dominant if there is a nearby
Page 63 and 64: Relative Abundance and Diversity of
Page 65 and 66: Option 4: Restore Mangrove Forest U
Page 67 and 68: TABLE 4-5COMPARATIVE EVALUATIONWETL
Page 69 and 70: Long-term resource management activ
Page 71 and 72: TABLE 4-9FIELD MONITORING WORKSHEET
Page 73 and 74: • begin at the Tapua Stream mouth
Page 75 and 76: Figure 5-1Location MapSoutheast Wet
Page 77 and 78: Tufu Stream and two stream branches
Page 79 and 80: Mr. Whistler was part of a three-pe
Page 81 and 82: InvertebratesCrustacean densities w
Page 83 and 84: FIGURE 5-3OPTION 1: RESTORE RIPARIA
Page 85 and 86: TABLE 5-4COMPARATIVE EVALUATIONWETL
Page 87 and 88: Long term monitoring of the Vatia w
Page 91 and 92: More specific monitoring of stream
Page 93 and 94: Figure 6-1Location MapVaipito Strea
Page 95 and 96: Stream FlowsHistorical Stream Flows
Page 97 and 98: California grass (Brachiaria mutica
Page 99 and 100: FIGURE 6-3FISH AND INVERTEBRATE SUR
Page 101 and 102: Most of lower Vaipito Stream segmen
Page 103: Red mangrove should be planted with
Page 107 and 108: TABLE 6-9LONG-TERM RESOURCE MONITOR
Page 109 and 110: TABLE 6-10 (Continued)FIELD MONITOR
Page 111 and 112: Vehicular and pedestrian access to
Page 113 and 114: Figure 7-1Location MapLeele-Papa-Ta
Page 115 and 116: Stream flow, in some cases, is cons
Page 117 and 118: Stormwater Discharges and Related F
Page 119 and 120: AQUATIC FISH AND INVERTEBRATESGener
Page 121 and 122: Opportunities and StrategiesOption
Page 123 and 124: Figure 7-3Option 2: Reduction of Er
Page 125 and 126: TABLE 7-8PRELIMINARY COST ESTIMATEP
Page 127 and 128: TABLE 7-9LONG-TERM RESOURCE MONITOR
Page 129 and 130: TABLE 7-10 (Continued)FIELD MONITOR
Page 131 and 132: More specific monitoring of stream
Page 133 and 134: Figure 8-1Location MapSauino Stream
Page 135 and 136: Stream FlowsHistorical Stream Flows
Page 137 and 138: AQUATIC FISH AND INVERTEBRATESGener
Page 139 and 140: Figure 8-3Option 1: Construction of
Page 141 and 142: FIGURE 8-5OPTION 2: PLANT NATIVE RI
Page 143 and 144: Long-Term Monitoring and Site Maint
Page 147 and 148: TABLE 8-8 (Continued)FIELD MONITORI
Page 149 and 150: LOCATIONChapter NineLEAFU STREAMLea
Page 151 and 152: Figure 9-2Leone Pala and 300-Foot L
Page 153 and 154: However, during and following heavi
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Vegetation TrendsThe lower Leafu St
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LAND USES ADJACENT TOLOWER LEAFU ST
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Option 2: Construct Basaltic Wall,
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Figure 9-5:Stabilize East Stream Ba
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TABLE 9-7PRELIMINARY COST ESTIMATEP
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TABLE 9-8LONG-TERM RESOURCE MONITOR
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TABLE 9-9 (Continued)FIELD MONITORI
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Chapter TenASILI STREAMLOCATIONAsil
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Figure 10-2Asili Stream SegmentExis
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Stormwater Discharges and Related F
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Further downstream, the stream chan
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TABLE 10-4SUMMARY OF MACROFAUNAL OR
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American Samoa Wetlands/Streams Res
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CLEAN-UP OF LOWER ASILI STREAMLABOR
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TABLE 10-9LONG-TERM RESOURCE MONITO
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TABLE 10-10 (Continued)FIELD MONITO
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Vehicular and pedestrian access to
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Figure 11-1Location MapFusi Wetland
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WETLAND VEGETATIONNovember 1999 Sur
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The lack of stream flow entering th
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Figure 11-3Option 1: Remove Solid W
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Recommended Option and Estimated Pr
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TABLE 11-6FIELD MONITORING WORKSHEE
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Any future monitoring stations or s
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Project ManagerRepresentatives of a
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REFERENCESBiosystems Analysis, Inc.
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APPENDIX ASUMMARY OFPLANTSOBSERVED
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Species Family EnglishNameSamoanNam
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APPENDIX CSUMMARY OFAQUATIC MACROFA
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