Dam ID: KA-0030 Kaloko Reservoir Inspection Type: Inspection No: 2016-044 Date: April 12, 2016 STATE OF HAWAII - DLNR DAM SAFETY INSPECTION SHEET Visual Dam Safety Inspection Persons Present Affiliation Phone Number Ricky Cassiday Lucas Trust Representative Edwin Matsuda DLNR Denise Manuel DLNR Weather Condition:  Rain previous day Comments:  Rainy  Drizzle / Mist  Cloudy/Overcast  Partly Cloudy  Sunny  Dry 9:15 am 1. General: (Information currently on file, update as required) Dam/Res. Name Kaloko Reservoir Owner Mary N. Lucas Trust and Pflueger Properties Owner Contact Ricky Cassiday / Jimmy Pflueger Owner Ph. Lessee Lessee Ph. O & M Contractor KICO – Kilauea Irrigation Company – Tom Hitch O & M Ph. Nearest City Kilauea (2.6 Miles) Latitude 22.1781  (decimal) County Kauai Longitude -159.3798  (decimal) Tax Map Key(s) (4) 5-1-002:001 – Owned by Pflueger Properties - Kauai TMK Property Search (Feb 2012) (4) 5-1-002:005 – Owned by Mary N Lucas Trust - Kauai TMK Property Search (Feb 2012) Dam Status Active Year Completed 1890 Normal Storage 1255* ac. ft. Offsite Drainage Area 0.12 sq mi. Hazard Potential Dam Length Max. Storage Spillway Type Owner owns land under dam facility: Yes Emergency Action Plan on file with the Department: Reports on file with the Department: High 915 1400* NONE Dam Size Intermediate ft. Dam Height 44 * ac. ft. Max. Surface Area 38 * Max. Spillway Q n/a Yes  April 2011 - Ka Loko (KA-0030) - Phase II - Existing Conditions - AECOM  November 2007 - Ka Loko (KA-0030) - Phase I Report - AECOM * Values are from before the dam breach Sheet 1 of 11 ft. ac. cfs Dam ID: KA-0030 Kaloko Reservoir Inspection No: 2016-044 Date: April 12, 2016 2. Questions for Owner’s Rep.: Yes Construction Plans Available  Site / Facility Map  Operation & Maintenance Manual  Emergency Action Plan  Modifications / Improvements  Conduct Routine Inspections  Conduct Routine Maintenance  Vehicle access to site  Access during heavy rains  Access when spillway is flowing  Incident History  Reservoir’s Current Use No Unknown Comments       None on file   Needs to be updated     Daily   As needed / irrigation system being maintained/operated    Not accessible  With Standard car  Requires 4-Wheel Drive    Not accessible  With Standard car  Requires 4-Wheel Drive    Not accessible  With Standard car  Requires 4-Wheel Drive    Breached  Overtop  Slide  Down stream Flooding  Other: Breach in March 2006     Sediment  Irrigation  Recreation  Flood Control  Drinking Water  Power Generation  Other: Findings and Corrective Actions:  a. The Owner shall maintain documentations including Construction plans, specifications, improvements, modifications, Operations and Maintenance Manuals and routine inspection logs for this dam facility.  b. An Emergency Action Plan (EAP) is on file with the department, submit any updates as applicable.  c. An EAP is required for High and Significant Hazard Dams. Submit an updated EAP for this facility.  d. An EAP is recommended for all dams regardless of hazard class. Submit EAP if developed for the facility.  e. Submit current Operations and Maintenance Manual or Procedures for this dam / reservoir facility.  f. Submit Site or Facility Map of this Dam which identifies the location of major features including outlet works controls and conduits.  g. Submit narrative and additional information detailing the improvements, modifications, and/or alterations at the dam site, unless covered by approved dam permit.  h. Routine inspection logs were not inspected. Start and maintain a log book  i. Dam owners shall provide for routine inspection of the dam.  j. The dam did not appear to be maintained on a regular basis.  k. Access to site appears to be satisfactory.  l. There is no vehicular access to the dam site. Operational and emergency plans need to reflect this deficiency or access provided.  m. Access to dam is questionable during severe weather conditions and/or spillway overflows. Operational plans and emergency plans need to reflect this deficiency or access provided.  n. Provide a detailed narrative of the incident, responses taken, and any damages incurred. Dam owners are required to promptly advise the department of any sudden or unprecedented flood or unusual or alarming  o. Additional Requirements: The following investigative study(s) are: Required Recommended   Phase I Study   Hazard Classification   Emergency Action Plan (EAP)   Hydrology and Hydraulics (including Probable Maximum Flood and spillway capacity)   Seepage Analysis   Stability Analysis   Seismic Analysis   Other: Post breach remediation Sheet 2 of 11 Dam ID: KA-0030 Kaloko Reservoir Inspection No: 2016-044 Date: April 12, 2016 Physical Dam Features: (Check All Applicable. Provide description of Items Observed and/or Take Photos. Indicate photo # in description.) 3. Reservoir: Breach at 21.5 (reference EM-March 5, 2012) Level during inspection 19.97 ft per USGS Real Time Gage (gage / other) 19 to 21 Normal Operating Level/Range Description: Typical Operation ft per USGS Real Time Gage (gage / other) Level controlled by Kaloko Ditch diversion stoplogs  Spillway always flowing  Kept within normal range  Kept Empty  Drained Daily  Only filled by Storms  Other: Sinkhole in Res.:  # Observed: Size: by in. Deep  Not Visible  None Observed Description: Staff Gage: USGS Real time gage and staff gage near outlet intake (numbers are not corresponding) Description: Findings:  a. The reservoir was not inspected.  b. Satisfactory – Expected to fulfill intended function – no corrective action required.  c. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.  d. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.  e. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.  f. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken. Corrective Actions:  g. The staff gage needs maintenance and/or repair. Description: Provide reference and/or make numbers consistent between 2 measuring systems (confirm if “0” on staff gage = 20 on USGS gage  h. A staff gage was not observed at the reservoir. Provide some method of quantifying the water level.  i. A sinkhole was observed in the upstream reservoir. Conduct additional investigations and monitoring to identify the cause, risk and appropriate action. 4. Inflow Works Description:  Number of Inflows Three (1 - Inflow from Kaloko Ditch, 2 - Drainage area estimated to be 76 acres, 3 - Inflow from Moloaa Ditch via 8” PVC pipe [reported to be closed](photo 220))  Inflow Culvert / Pipe Size: Control: From: in.  DIP  Corrugated Metal  PVC  HDPE  Gate  Valve  Concrete  Other  Flow can either be Shut off or Bypassed  Stream Diversion  Pump  Reservoir  Other  Inflow Ditch / Flume Throwaway control – ¼ mile upstream on ditch Dimension: ~ 6-ft Wide and 8-ft Deep (Size x Depth) Shape Rectangular at Control Surface:  Dirt  Wood  Concrete  Lined w/ Control:  Gate  Valve  Flow can either be Shut off or Bypassed From:  Stream Diversion  Pump  Reservoir  Other Kaloko Ditch Findings:  a. The inflow works were not inspected.  b. Satisfactory – Expected to fulfill intended function – no corrective action required.  c. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.  d. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.  e. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.  f. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken. Corrective Actions:  g. The inflow works needs maintenance and/or repair. Description: Maintain suitable access to throw away control structure  h. Sheet 3 of 11 Dam ID: KA-0030 Kaloko Reservoir Inspection No: 2016-044 Date: April 12, 2016 5. Upstream Slope: Slope Protection:  None (Typical Slope ± 2 H :  Dumped Rock  Fitted Rip Rap 1V )  Grouted Rip Rap  Liner  Other:  Gully (>6” deep)  None Observed  Defect in Protection: Description: Erosion:  Loose soil w/ little vegetation Cracks:  Parallel with crest  Rut (<6”)  Not Visible Description:  Slide visible  Not Visible  None Observed Vegetation limited observations Description: Sinkholes:  Perpendicular to crest  # Observed: Size: and Depth  Not Visible  None Observed Description: Vegetation:  None  Low Ground Cover Description:  Bushes or Tall Grass  Trees #  <6”  >6” & <20”  >20” Thick grasses Findings:  a. The upstream slope was not inspected.  b. Satisfactory – Expected to fulfill intended function – no corrective action required.  c. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.  d. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.  e. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.  f. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken. Corrective Actions:  g. Slope protection needs maintenance or repair. Description: Establish and maintain erosion control ground cover  h. Rut and/or Gully erosion was observed on the slope, which requires maintenance and/or repair. Description:  i. A crack was observed on the slope, which requires further investigation to determine the underlining cause. Monitor the area and/or repair as required.  j. A sinkhole was observed on the slope, which requires further investigation to determine the underlining cause. Repair and monitor the area.  k. The upstream slope was not visible due to high grass and bush vegetation. Clear high vegetation and maintain low to enable easy visual inspection.  l. Tree(s) were observed on the dam embankment. Trees have been identified as the probable cause of piping failures, and can possibly cause severe damage to the embankment if they are uprooted during a high winds. Corrective action is required to remove the tree hazards from the dam. All repair work shall be accomplished as per the requirements of licensed geotechnical or civil engineer. Routinely monitor the damaged area for signs of settlement and seepage.  m. Sheet 4 of 11 Dam ID: KA-0030 Kaloko Reservoir 6. Crest: Access: Erosion: Inspection No: 2016-044 Date: April 12, 2016 12 to 15-ft (varies in breach section)  Roadway, Surface / Width / Usage: 10-ft / Grassed / Vehicle Access  Loose soil w/ little vegetation  Rut (<6”)  Gully (>6” deep)  Not Visible  None Observed Approximate Crest Width:  None  Walking Path Cracks: Description: Breach in embankment-about 161-ft wide at base and 228-ft wide at crest (photos 204, 205)  Parallel with crest  Perpendicular to crest  Slide visible  Not Visible  None Observed Sinkholes:  Description: Cracks at the end of downstream embankment remnants – unstable slopes x in. Long x in. Deep  Not Visible  None Observed in. Wide Description: Vegetation:  None  Low Ground Cover  Bushes or Tall Grass  Trees #  <6”  >6” & <20”  >20” Description: Findings:  a. The crest was not inspected.  b. Satisfactory – Expected to fulfill intended function – no corrective action required.  c. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.  d. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.  e. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.  f. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken. Corrective Actions:  g. Access along the crest was satisfactory.  h. Access along the crest was not possible. Description: Entire crest at breach section not accessible  i. Rut and/or Gully erosion was observed on the crest, which requires maintenance and/or repair. Description:  j. A crack was observed on the crest, which requires further investigation to determine the underlining cause. Monitor the area and/or repair as required.  k. A sinkhole was observed on the crest, which requires further investigation to determine the underlining cause. Repair and monitor the area.  l. Portions of the crest were not visible due to high grass and bush vegetation. Clear high vegetation and maintain low to enable easy visual inspection.  m. Tree(s) were observed on the dam embankment. Trees have been identified as the probable cause of piping failures, and can possibly cause severe damage to the embankment if they are uprooted during a high winds. Corrective action is required to remove the tree hazards from the dam. All repair work shall be accomplished as per the requirements of licensed geotechnical or civil engineer. Routinely monitor the damaged area for signs of settlement and seepage.  n. Embankment remnants (downstream) have very steep end slopes and have been determined to be unstable (AECOM April 2011) Sheet 5 of 11 Dam ID: KA-0030 Kaloko Reservoir Inspection No: 2016-044 Date: April 12, 2016 7. Downstream Slope: Access:  lower roadway along toe Slope Protection:  None  Dumped Rock Erosion:  Loose soil w/ little vegetation Description: (Typical Slope ± 2 H  roadway to outlet works  walkway to outlet works  Rip Rap  Grouted Rip Rap  Concrete  Rut (<6”)  Gully (>6” deep)  Not Visible : 1V )  None Observed  None Observed Left side of embankment has been noted to have a large erosion hole (AECOM April 2011) Cracks:  Parallel with crest Description: Sinkholes:   Perpendicular to crest  Slide visible  Not Visible  None Observed Excessive vegetation limited observations and access in. Wide x in. Long x in. Deep  Not Visible  None Observed Excessive vegetation limited observations and access  Low Ground Cover  Bushes or Tall Grass  Trees # 100+  <6” Description: Vegetation:  None  >6” & <20”  >20” Description: Excessive vegetation on left, breach section and right downstream slope (photos 206, 207, 208) Seepage: Seep Spot Number 1  Green Vegetation  Flowing, Description: Water Clarity:  Clear Description:  Ponding Water  Not Visible Excessive vegetation limited access  Wet or Muddy Ground  Some particles  Muddy  None Observed  Other: Ponded water on second (lower) bench, 4/16/14 and 4/12/16 (photos 206, 207) Findings:  a. The downstream slope was not inspected.  b. Satisfactory – Expected to fulfill intended function – no corrective action required.  c. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.  d. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.  e. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.  f. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken. Corrective Actions:  g. Slope protection needs maintenance or repair. Description: Establish and maintain erosion control ground cover  h. Rut and/or Gully erosion was observed on the slope, which requires maintenance and/or repair. Description: Remediate large erosion hole on the left remnant with suitable material  i. A crack was observed on the slope, which requires further investigation to determine the underlining cause. Monitor the area and/or repair as required.  j. A sinkhole was observed on the slope, which requires further investigation to determine the underlining cause. Repair and monitor the area.  k. The down stream slope was not visible due to high grass and bush vegetation. Clear high vegetation and maintain low to enable easy visual inspection.  l. Tree(s) were observed on the dam embankment. Trees have been identified as the probable cause of piping failures, and can possibly cause severe damage to the embankment if they are uprooted during a high winds. Corrective action is required to remove the tree hazards from the dam. All repair work shall be accomplished as per the requirements of licensed geotechnical or civil engineer. Routinely monitor the damaged area for signs of settlement and seepage.  m. Seepage/Ponding water was observed. Monitor and conduct further investigation to locate the source of water and extent of any possible hazardous or developing condition.  n. Seepage was observed flowing and particles were observed to be removed by the flow. Take immediate action to stop the loss of soil from the embankment. Conduct further investigation to determine the underlining cause and take corrective action. Monitor the area.  o. The slope was very steep, around a 1 to 1 slope, further study is required to verify slope stability.  p. Reestablish access to the downstream slope and toe  q. Embankment has been breached – breach needs to be stabilized Sheet 6 of 11 Dam ID: KA-0030 Kaloko Reservoir 8. Abutments: Erosion: Inspection No: 2016-044 Date: April 12, 2016  Loose soil w/ little vegetation  Rut (<6”)  Gully (>6” deep)  Not Visible  None Observed Description: Cracks:  Parallel with crest  Perpendicular to crest  Slide visible  Not Visible  None Observed Description: Vegetation:  None  Low Ground Cover  Bushes or Tall Grass  Trees # ~20  <6”  >6” & <20”  >20” Description: About 20 large trees on the Right Downstream Abutment. Unable to determine Left Abutment as downstream slope is too overgrown to inspect (photos 203, 204, 205) Seepage: Seep Spot Number 1  Green Vegetation  Wet or Muddy Ground  Ponding Water  Not Visible  None Observed  Flowing, Description: Water Clarity:  Clear  Some particles  Muddy  Other: Description: Seep Spot Number 2  Green Vegetation  Wet or Muddy Ground  Ponding Water  Not Visible  None Observed  Flowing, Description: Water Clarity:  Clear  Some particles  Muddy  Other: Description: Findings:  a. The abutments were not inspected.  b. Satisfactory – Expected to fulfill intended function – no corrective action required.  c. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.  d. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.  e. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.  f. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken. Corrective Actions:  g. Slope protection needs maintenance or repair. Description: Establish and maintain erosion control ground cover  h. Rut and/or Gully erosion was observed, which requires maintenance and/or repair. Description:  i. A crack was observed along the abutments, which requires further investigation to determine the underlining cause. Monitor the area and/or repair as required.  j. The abutment area was not visible due to high grass and bush vegetation. Clear high vegetation and maintain low to enable easy visual inspection.  k. Tree(s) were observed on the dam embankment. Trees have been identified as the probable cause of piping failures, and can possibly cause severe damage to the embankment if they are uprooted during a high winds. Corrective action is required to remove the tree hazards from the dam. All repair work shall be accomplished as per the requirements of licensed geotechnical or civil engineer. Routinely monitor the damaged area for signs of settlement and seepage.  l. Seepage/Ponding water was observed. Monitor and conduct further investigation to locate the source of water and extent of any possible hazardous or developing condition.  m. Seepage was observed flowing and particles were observed to be removed by the flow. Take immediate action to stop the loss of soil from the embankment. Conduct further investigation to determine the underlining cause and take corrective action. Monitor the area.  n. Reestablish access to abutments Sheet 7 of 11 Dam ID: KA-0030 Kaloko Reservoir Inspection No: 2016-044 Date: April 12, 2016 9. Toe: Erosion:  Loose soil w/ little vegetation  Rut (<6”) Cracks:  Parallel with crest Description: Description:  Not Visible Excessive vegetation prohibited safe access  Perpendicular to crest  Slide visible  Not Visible Excessive vegetation prohibited safe access  Bushes or Tall Grass  Trees # 50 + Vegetation:  None  Low Ground Cover Seepage: Seep Spot Number 1 Description:  Gully (>6” deep)  None Observed  None Observed  <6”  >6” & <20”  >20” Excessive vegetation – high vegetation and trees (photos 206, 207, 208)  Green Vegetation  Flowing, Description: Water Clarity:  Clear  Not Visible  None Observed Excessive vegetation prohibited safe access  Wet or Muddy Ground  Ponding Water  Some particles  Muddy  Other: Description: Seep Spot Number 2  Green Vegetation  Flowing, Description: Water Clarity:  Clear  Not Visible  None Observed Excessive vegetation prohibited safe access  Wet or Muddy Ground  Ponding Water  Some particles  Muddy  Other: Description: Findings:  a. The toe was not inspected.  b. Satisfactory – Expected to fulfill intended function – no corrective action required.  c. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.  d. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.  e. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.  f. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken. Corrective Actions:  g. Slope protection needs maintenance or repair. Description: Establish and maintain erosion control ground cover  h. Rut and/or Gully erosion was observed, which requires maintenance and/or repair. Description:  i. A crack was observed along the near the toe, which requires further investigation to determine the underlining cause. Monitor the area and/or repair as required.  j. The toe area was not visible due to high grass and bush vegetation. Clear high vegetation and maintain low to enable easy visual inspection.  k. Tree(s) were observed on the dam embankment. Trees have been identified as the probable cause of piping failures, and can possibly cause severe damage to the embankment if they are uprooted during a high winds. Corrective action is required to remove the tree hazards from the dam. All repair work shall be accomplished as per the requirements of licensed geotechnical or civil engineer. Routinely monitor the damaged area for signs of settlement and seepage.  l. Seepage/Ponding water was observed. Monitor and conduct further investigation to locate the source of water and extent of any possible hazardous or developing condition.  m. Seepage was observed flowing and particles were observed to be removed by the flow. Take immediate action to stop the loss of soil from the embankment. Conduct further investigation to determine the underlining cause and take corrective action. Monitor the area.  n. Reestablish access to the downstream slope and toe Sheet 8 of 11 Dam ID: KA-0030 Kaloko Reservoir 10. Outlet Works: Culvert / Pipe Type / Size: Inspection No: 2016-044 Date: April 12, 2016 Three 24-in PVC Puka Pipe Risers to a manifold near the Right Abutment – unknown grouting and tunnel entrance. The pipe daylights in a 5-ft x 5-ft tunnel beyond the Right Abutment. The PVC pipe at this point is 18-in and runs in the old ditch. The 18-in pipe has an 18-in butterfly valve and then continues to a thrust block. At the thrust block an 18-in PVC pipe tees off to the left (KICO) with an 18-in butterfly valve. Another 18-in line continues straight (Lucas) with an 18-in butterfly valve. And there is also an 8-in PVC pipe that branches off the thrust block and controlled by an 8-in butterfly valve (reported to be a drain line at the filter station) (photos 210, 211, 215, 216) Culvert:  Concrete  Masonry  unlined earth  Other Pipe:  DIP  Corrugated Metal  PVC  HDPE  Concrete  Other Control Type:  Gate  Valve  Other 18-in butterfly valves / 8-in butterfly drain valve Location:  Control on Upstream side  Control on Downstream side Seepage:  Green Vegetation  Wet or Muddy Ground  Ponding Water  Not Visible  None Observed  Flowing, Description: Water Clarity:  Clear  Some particles  Muddy  Other: Description: . Findings:  a. The outlet works were not tested  b. The outlet works were not inspected  c. Satisfactory – Expected to fulfill intended function – no corrective action required.  d. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.  e. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.  f. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.  g. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken. Corrective Actions:  h. Seepage/Ponding water was observed. Conduct further investigation to locate the source of water and extent of any possible hazardous or developing condition.  i. Seepage was observed flowing and particles were observed to be removed by the flow. Take immediate action to stop the loss of soil. Conduct further investigation to determine the underlining cause and take corrective action. Monitor the area. Failures caused by seepage/piping along the outlet conduit are very common and are considered to be a dangerous situation.  j. Were not visible due to high grass and bush vegetation. Clear high vegetation and maintain low to enable easy visual inspection.  k. Consider upstream control  l. Verify operational condition of all valves. Confirm that the drain valve is functional.  m. Investigate and document condition of tunnel entrance from puka pipes. Vault reported to have been grouted – unknown valve condition/status and needs to be evaluated Sheet 9 of 11 Dam ID: KA-0030 Kaloko Reservoir 11. Spillway: Type: Inspection No: 2016-044 Date: April 12, 2016 NO SPILLWAY  None  Culvert/Pipe  Channel Description: Dimension: Slope Protection: ft.  None  Grass Invert elevation:  Dumped Rock ft. per staff gage  Fitted Rip Rap  Grouted Rip Rap  Concrete  Defect in Protection: Description: Approach: Erosion:  Clear  High Veg.  Trees  Other:  Scour  Gully  Not Observed  Headcut  Other: Description: Vegetation:  None  Low Ground Cover  Bushes or Tall Grass  Trees #  <6”  >6” & <20”  >20” Description: Findings:  a. The spillway was not inspected.  b. Satisfactory – Expected to fulfill intended function – no corrective action required.  c. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.  d. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.  e. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.  f. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken. Corrective Actions:  g. Slope protection needs maintenance or repair. Description:  h. The spillway approach was blocked. Clear approach.  i. Severe scour erosion was observed which requires maintenance and/or repair. Description:  j. A headcut was observed downstream of the spillway. Corrective / mitigative action is required to prevent this problem from moving upstream.  k. Trees are unacceptable in the spillway channel and approach. Take corrective action to address the woody vegetation problem and repair the damaged area.  l. Unclear if spillway is adequately sized. Spillway should pass the probable maximum flood. Verify spillway capacity and take corrective action as required.  m. Design and construct a spillway to safely pass the Inflow Design Flood 12. Downstream Channel: Name: Breach section overflows to Wailapa Stream towards former Morita Reservoir Downstream:  Sump  Open Area  Un-Defined Drainage-way  Defined Drainage-way  Other Items along Stream Bank:  None  Road  Houses  Town  Not Inspected Description: Morita Reservoir has been removed Findings:  a. The downstream channel was not inspected.  b. Satisfactory – Expected to fulfill intended function – no corrective action required.  c. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.  d. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.  e. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.  f. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken. Corrective Actions:  g. Sheet 10 of 11 Dam ID: KA-0030 Kaloko Reservoir Inspection No: 2016-044 Date: April 12, 2016 Additional Comments: Access to the Kaloko Ditch throwaways needs to be continually maintained so that operations can reach them to control flows during inclement weather conditions. The Crest, Upstream and Downstream Embankment remnants have been determined to be unstable (AECOM April 2011). A Spillway needs to be designed and constructed to appropriately pass the Inflow Design Flood. Ka Loko Reservoir and Kaloko Reservoir are names which have been used in various reports. Kaloko Reservoir was used in this report. The Upstream Slope/crest may have been regraded since the AECOM April 2011 site visit and survey. An updated survey should be completed for future design purposes. No substantial remediation has been done since the 2006 breach of this dam and reservoir. Remediation and stabilization are needed. Limitations and Intent of this Dam Safety Inspection: This Dam Safety Inspection was conducted to assess the general overall condition of the reservoir/dam, identify visible deficiencies, and recommend areas of for monitoring, additional investigative studies and corrective actions. The inspection is based only on visible features/areas of the dam at the time of inspection. No assurance can be made regarding the dam’s condition after this date. Subsequent adverse weather and other factors may affect the dam’s condition. This inspection is not a formal phase I or phase II dam safety inspection and may not include a review or evaluation from each specialist of an inspection team, such as a geologists, civil, geotechnical, structural, or hydraulics engineer. The owner should verify the findings of this report and take corrective actions. The owner may submit to the State alternative corrective actions that are certified by a licensed professional engineer in the State of Hawaii experienced in the design and construction of dams. This inspection does not relieve the owner/operator from their responsibility to conduct routine inspections, maintenance, repairs, modifications, monitoring, documentation, and/or investigative studies. The inspection was conducted under the authority of the Hawaii Revised Statures Chapter 179D, and Hawaii Administrative Rules, Title 13, Chapter 190, titled “Dams and Reservoirs”. Questions regarding this inspection should be forwarded to the Hawaii State Dam Safety Program; DLNR Engineering Division; PO Box 373; Honolulu, Hawaii 96809; Ph. (808) 587-0236. Revised: October 28, 2006 : August 3, 2009 O:\DAM SAFETY PROGRAM )# _ Inspection Progra\Inspection Forms\20090803 – Dam Safety Inspection of Hawaii Reservoir (XX-####) – DLNR.doc Sheet 11 of 11 KALOKO RESERVOIR 1. General Information KA-0030 Kauai 2. Owner Information a. State Dam ID KA-0030 b. National ID HI00030 c. Dam Name KALOKO RESERVOIR a. Name of Owner Mary N. Lucas Trust (Cassiday); Mary N. Lucas Trust (Taylor); Pflueger Properties b. TMK(s): (4) 5-1-002:001, (4) 5-1-002:005 d. Other Name(s) e. Longitude / Latitude -159.3798 / 22.1781 f. Kauai / Kauai County / Island g. Type of Dam Earthen h. Purpose Irrigation i. Completed / Last Modified 1890 / - j. Nearest City / Town Kilauea (2.6 miles) k. Water Body Type State Regulated Dam l. 27 ft Dam Height m. Dam Length 915 ft n. Drainage Area 0.12 sq. miles / 77 acres o. Size Classification Intermediate April 2016 3. Hazard Potential Classification a. Hazard Classification High b. Emergency Action Plan Yes Page 1 KALOKO RESERVOIR KA-0030 Kauai Aerial Photo (07/12/2007) 4. Reservoir 7. Embankment a. Normal Storage 1,255 ac-ft / 409 MG a. Type of Dam b. Maximum Storage 1,400 ac-ft / 456 MG b. Minimum Crest Width c. Surface Area 38.0 acres c. Upstream Slope Grade Earthen d. Upstream Slope Protection 5. Primary Spillway a. Minimum Spillway Width b. Spillway Length c. Spillway Type Vegetation e. Downstream Slope Grade None Found f. Downstream Slope Protection Vegetation g. Dam Height 27 ft h. Dam Length 915 ft d. Protection e. Maximum Discharge 8. Inflow Works 6. Primary Outlet Works a. Works Type Name Kaloko Ditch Yes ~ 6 Ft Wide by 8 Ft Deep at Gate Ditch Moloaa Ditch No 8 Inch PVC Downstream Control b. Maximum Discharge c. Size 18 Inch d. Control Description 18 Inch PVC Pipe in Tunnel at Left Abutment April 2016 Controlled Type Ditch Size Page 2 Kalako Reservoir dam from afar Kalako Reservoir (KA-noao) view from right abutment ?36: 159.3797?" 22.17713? 12Apri1? 9:23:43 AM Kloko Kaloko Kalako Reservoir view of left abutment Kalako Reservoir view of breach from reservoir 5 . 15937942" 22. 1 781 9" 159.3793? Kaloko PG 127'Aprf?l? 9:35:43 AM 22.17789? Kalako Reservoir Kalako Reservoir {Kit-0030} pending water in pending water in breach . .- K?i- .1 If? 5415937962" Kaloko (206}..1 PG 12prrf1E 9: 15937965? 22.1?312" 22.1 ?31 5? Kalako Reservoir {Kin-0030} trees in breach 1213mm 9:45:37 AM Kaiokot2091.UPG 'w 15937339" 22 173533 12J'Api'f16 9:33:35 AM Kalako Reservoir {Kit-0030) Kalako Reservoir (HA-003D) intake to outlet works intake to outlet works .1 ?2 121Apr116 cf1.1.935. . 2, -- 15937874" 15937894? Kaloko 22.1 22.17343? Kalako Reservoir Kalako Reservoir {KA-thal!) slope to outlet works to outlet works I ?x 1?33'2?? 159. Kaloko 121'Apr115 10:04:57 AM 22.17392" Kalako Reservoir (Kit-0030} outlet tunnel ?1 159.3792?? Kaloko 12a'Aprl1B 10:05:28 AM "22.1799?? Kalako Reservoir outlet valves - murk?z, ..- i ?7 .. . in" 21;. 159.3793? Kaloko PG 15937974" 22.13020? Kalako Reservoir {Kit-0030} Keloko (215}..1 PG Kalako Reservoir {Kin-0030} access road to outlet_ 1 2.141;) 10:03:19 AM Ed. 2.1053. 00.9020 000.05. 0? .000. 30000 01233 00.0.3. 00.9020 000.05. 0? .000. $0000 .3303: 3.23. 030.3. . . A .. yr?; .. .38.5.. .5333. 9.05. can: 2 am Ehndm .. .5 ammvh .23 2 02.95de .5 .mmuN?oF @2533 I .. a . ?00.0.2 . 3895.. .353: 303. 3295.. .353?. . at: tan 2 ammomrdm 2 Kalako Reservoir (Kim-0030) view from crest - small reservoir on left side - mesa? -- 15937711" Kaloko 22.17932" Kalako Reservoir (Kin-0030) 159.37349? 22.474:ana . 5.. 12Miprf15?1 15937349? 22.1143? 159.37%? 22.18039? Kalako Reservoir (HA-0030) slope Kaloko Kalako Reservoir (Kin-0030} toe - debris removed from darn 7 Kaloko PG "124Apr16:43:19 AM '12Mprl16 10:48:51 AM Kalako Reservoir {Kit-0030) Kalako Reservoir toe - debris removed from dam piping on slope .1 7? .E - hdieid -r -r :49:15 AM 15937752? 12% 15937758" Kaloko PG 12.n'Apri1B 10:48:54 AM 22.18039? 22.18053?