Ala Moana WWPS

(APPROXIMATE) INV = -83.00 END POINT DOWNSTREAM PROJECT SHAFT H o n l u a r b

Existing FMs

B-16 F o r r e s t A v e. B-20 Ala Moana

WWPS University of Hawaii

School of Medicine I l a l o S t r e e t e e r t S o l a l I

K e a w e S t . A u a h i S t . t S i h a u A

C o r a l S t .

B-17

O h e S t . t S e h O C o o k e S t . A l a M o a n a B l v d. v l B a n a o M a l A

K o u l a S t .

A h u i S t r e e t B-18 CONCEPTUAL 10 FT. DIAMETER TRUNK SEWER ALIGNMENT (DROP STRUCTURE SHAFT ALA MOANA - KAKAAKO TRUNK SEWER PROJECT K e w a l o B a s i n

W a r d A v e n u e A u a h i S t r e e t e e r t S i h a u A LOCATION MAP OW-3 (DROP STRUCTURE SHAFT

K a m a k e e S t r e e t B-19 A l a M o n B e c h P r k NON 6-(F) PARK PROPOSED TRUNK SEWER ALIGNMENT

P i i k o i S t r e e t A l a M o a n a S h o p p i n g n i p p o h S a n a o M a l A

B-21 C e n t e r e t n e C

A l a M o a n a B l v d. Approximate Scale: 1 Inch = 100 Feet 0 (APPROXIMATE) INV = -41.2 END POINT PROJECT UPSTREAM SHAFT 100 500 A l a W i H a r b o B o a t 1000 B-23 Moana Park WWPS

A t k i n s o n D r i v e

Existing 72" Sewer

H o n l u a r b

Existing FMs

B-16 F o r r e s t B-20 Ala Moana A v e. WWPS University of Hawaii School of Medicine

K e a w e

S t . A u a h i S t . t S i h a u A

C o r a l S t .

B-17

O h e S t . t S e h O C o o k e S t . A l a M o a n a B l v d. v l B a n a o M a l A

K o u l a S t .

A h u i S t r e e t B-18 CONCEPTUAL 10 FT. DIAMETER TRUNK SEWER ALIGNMENT Approximate Scale: 1 Inch = 100 Feet 100 0

N ALA MOANA - KAKAAKO TRUNK SEWER PROJECT K e w a l o B a s i n 500

W a r d

A v e n u e 1000 LOCATION MAP SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-20 SEWER BASIN FACILITIES Sheet 1 of 7

LOCATION: FORREST AVE, OAHU, HAWAII DATE(S) DRILLED: 9-13-10 to 9-15-10 GROUND SURFACE ELEVATION: N/A LOGGED BY: B. AHAKUELO CHECKED BY: J. KWONG GROUNDWATER LEVEL / DATE: SEE END OF LOG HAMMER TYPE: SAFETY HAMMER WEIGHT/DROP: 140 LBS / 30 IN CONTRACTOR: YK DRILLING, LLC DRILLING METHOD: 4-INCH SSA, WASH BORE, PQ WIRELINE DRILL EQUIP: MOBILE DRILL B-54 BOREHOLE BACKFILL: CEMENT GROUT

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 0 0 8" Asphalt Concrete Pavement

FILL Brown silty gravel (GM), moist

Tan coralline fine sand (SP), very loose, wet 1 2 100 5 LAGOONAL DEPOSIT -5 Gray lean clay with trace fine sand (CL), very soft to soft, wet

Gray clayey coralline gravel with sand (GC), very loose, wet 2 2 100 Gray water return 10 -10

No recovery PQ-1 0 Gray water return

15 -15 contains coralline gravel 3 3 11

PQ-2 0 No recovery Gray water return 20 -20

4 8 33

Grayish tan water PQ-3 43 contains seams of silty clay return

25 -25 Coral limestone at CORAL REEF LIMESTONE tip of sampler Off white to gray coral reef limestone, strongly cemented, hard, closely fractured, wet

PQ-4 100 90 Grayish tan water return

30 -30 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-18 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-20 SEWER BASIN FACILITIES Sheet 2 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 30

Grayish tan water PQ-5 100 95 contains fissures and some voids return

35 -35

contains more voids infilled with a tan silty sand

PQ-6 100 92 Tan water return

40 -40

Tan water return becomes moderately hard to hard, crushed to moderately fractured with voids infilled with a tan PQ-7 97 58 silty sand and gravel layers

45 -45

becomes brown weakly to strongly cemented coral reef limestone, moderate hardness, crushed to closely fractured with coarse coralline silty sand and gravel zones with shell fragments PQ-8 100 35

50 -50

PQ-9 40 contains zones of weakly cemented gravel

55 -55 CORALLINE DETRITUS Off white weakly cemented silty coralline gravel and sand (GM), wet contains coral gravel fragments and coarse PQ coralline sand 35 10

60 -60 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-18 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-20 SEWER BASIN FACILITIES Sheet 3 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 60 Off white silty coralline gravel (GM), loose, wet 5 25 78

6 7 94 grades with fine to coarse sand 38.6

PQ No recovery 0 11 65 -65

7 11 22 becomes white, very loose to loose

Gravel = 21% Off white silty sand to sandy silt with gravel (SM- 8 6 78 32.7 Sand = 29% ML), loose to medium sitff, wet Fines = 50%

PQ contains off white coralline reef cobble and gravel Tan water return 100 29 12 fragments 70 -70

contains off white and gray coral cobble and PQ gravel fragments 20 13 Tan water return

75 -75

Tan silty sand with gravel (SM), medium dense, 9 31 67 wet Gs = 2.676 10 10 89 26.8 grades with more silt, loose to medium dense

PQ Tan water return 0 14 No recovery 80 -80 becomes off white to white, loose Gravel = 25% 11 25 17 37.3 Sand = 46% Fines = 29%

12 5 100 30.8

PQ becomes light brown to white 50 15 85 -85

13 26 100 grades to loose to medium dense 21.9 81.5 TXUU

14 20/5" 90 grades to very dense 21.0 Sampler refusal Gs = 2.726 CORAL REEF LIMESTONE PQ Light brown to tan coral reef limestone, strongly 100 77 361 16 cemented, closely to moderately fractured 90 Off white to brown coral reef limestone, strongly-90 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-18 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-20 SEWER BASIN FACILITIES Sheet 4 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, cemented, hard, closely fractured, contains trace basalt gravel

Light gray water BASALT LAVA FLOWS PQ return 100 97 Gray slightly vesicular basalt, slightly weathered, 844 17 very hard, moderately fractured with brown weathering at joints

95 -95

PQ 100 80 13680 18 grades to slightly vesicular, closely to moderately fractured

100 -100

Light gray water PQ return 88 28 19 contains olivine weathering in fractures

105 -105

PQ grades to brownish gray 80 25 20 Gray water return CORAL REEF SANDSTONE Tan cemented coralline sandstone cobble and 110 gravel, low hardness, closely fractured, wet -110

Tan water return PQ 55 37 21 CORAL REEF LIMESTONE White, moderately cemented coral limestone, moderately hard to hard, closely fractured, 115 contains voids and fissures -115

grades with zones of crushed to closely fractured Light brown water PQ coral limestone return 100 32 22

120 -120

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-18 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-20 SEWER BASIN FACILITIES Sheet 5 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY,

Light brown water return PQ 60 17 23

125 -125

PQ grades to closely to moderately fractured No water return 100 58 24

130 -130

No water return

PQ 50 30 25

INTERBEDDED ALLUVIUM AND CORALLINE 135 DEPOSIT -135 Tan to light brown silt with subangular to subrounded coralline gravel and coralline reef limestone fragments (ML), wet

PQ 70 26 Tan water return Basalt cobble at tip of core barrel

140 -140

OLDER ALLUVIUM / WEATHERED TUFF Brown fused volcaniclastic sediments, primarily fused brown tuff and sand, rock-like PP = 4.5+ tsf PQ 83 27 Brown elastic silt with subrounded gravel (MH), Light brown water hard, wet return

145 -145

PQ 93 28 Light brown water return

150 -150

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-18 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-20 SEWER BASIN FACILITIES Sheet 6 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY,

Brown volcaniclastic sediment, primarily fused PQ brown tuff and sand, rock-like 24" slipped out of 58 52.0 73.4 28.9 29 barrel at surface PP = 4.5+ tsf

155 -155

PQ No recovery 0 30

160 -160 15 No recovery

PQ PP = 4.5+ tsf 73 31 Light brown water return

165 -165

PQ 100 32 Light brown water return

170 -170

PQ 77 33 contains subrounded basalt gravel Light brown water return

175 -175

Brownish gray rounded to subrounded poorly graded basalt cobbles and gravel (GP)

PQ Brown water return 23 34

180 -180 Brown with reddish brown fine coarse sandy silt 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-18 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-20 SEWER BASIN FACILITIES Sheet 7 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 16 30/3" 4 (MH), hard, wet

Brown water return PQ 35 contains zones of cemented shell fragments 35

185 -185

Brown volcaniclastic sediments primarily fused brown tuff and sand (rock-like) with basalt cobbles

PQ Brown water return 100 36

190 -190

PQ 77 37 grades to gray Brown water return

195 -195 PP = 4.5+ tsf

PQ 100 grades to light gray to brown 38 Light brown water return becomes tan, fused, moderately hard 200 -200 Boring completed at 200.5 feet below existing ground surface on 9/15/2010

Summary of Groundwater Levels Date Depth Below Ground 9/13/10 5.25' 9/15/10 3.5'

205 -205

210 210

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-18 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-16 SEWER BASIN FACILITIES Sheet 1 of 7

LOCATION: UH MEDICAL SCHOOL PARKING LOT C, OAHU, HAWAII DATE(S) DRILLED: 9-22-10 to 9-27-10 GROUND SURFACE ELEVATION: N/A LOGGED BY: L.OKIMOTO/B.AHAKUELO CHECKED BY: J. KWONG GROUNDWATER LEVEL / DATE: SEE END OF LOG HAMMER TYPE: SAFETY HAMMER WEIGHT/DROP: 140 LBS / 30 IN CONTRACTOR: HAWAII TEST BORINGS, INC. DRILLING METHOD: 4-INCH SSA, WASH BORE, PQ WIRELINE DRILL EQUIP: MOBILE DRILL B-53 BOREHOLE BACKFILL: CEMENT GROUT

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 0 0 5" Asphalt Concrete Pavement Auger grinding 0' to 5' bgs FILL Tannish brown silty gravel with sand (GM), moist

5 -5 Brownish tan silty coralline gravel with sand and 1 36 100 trace shells (GM), medium dense, moist

LAGOONAL DEPOSITS 10 Gray silty fine sand (SM), very loose to loose, wet-10 2 4 56

PQ-1 0 No recovery Light gray silty subangular coralline gravel with 3 16 50 Light gray water trace sand (GM), loose, wet return

15 -15 PQ-2 0 No recovery

Gray silt with fine sand with trace coral gravel and 4 1 88 shells (ML), very soft, wet

20 -20 Light gray water return PQ-3 0 No recovery

becomes tannish gray, grades with more sand 5 6 83 and coarse subangular coral gravel, soft to medium stiff Light gray water return 25 -25 No recovery PQ-4 0

grades with less sand, trace shells, very soft to 6 2 89 soft

30 -30 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-14 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-16 SEWER BASIN FACILITIES Sheet 2 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 30 PQ-5 0 No recovery Off white to gray water return

becomes darker gray, medium stiff 7 8 83

Off white to gray water return 35 -35 No recovery PQ-6 0

grades with more fine sand, very soft to soft 8 2 100

40 -40 No recovery PQ-7 0

grades with less sand 9 3 100

Light gray water return 45 -45 No recovery PQ-8 0

becomes grayish brown with more fine sand

10 7 100 VOLCANIC CINDER DEPOSIT Dark gray silty cinder sand (SM), loose, wet 50 -50 No recovery PQ-9 0

11 75/1" 100 Black silty basalt coarse sand with subrounded gravel (SM), very dense, wet becomes moderately cemented, moderately hard Gray water return

55 PQ -55 57 28 10 Brownish gray CORALLINE REEF DEPOSIT water return Off white coral reef cobbles and gravel, moderately to strongly cemented, contains fissures and zones of gravel with trace silt Gray water return

PQ 11 contains less zones of coral reef gravel 60 33 25 -60 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-14 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-16 SEWER BASIN FACILITIES Sheet 3 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 60

BEACH DEPOSIT 12 92 100 Tan silty coralline sand with subrounded coralline gravel (SM), dense, wet grades with less gravel, more medium grained 13 30 83 sand, trace shells, medium dense to dense 65 -65 Gray water return PQ Tan cemented coralline sandstone cobbles, Drilling lubricant 50 12 moderately cemented, moderately hard present on sample

becomes very dense, less cemented 14 122 83

becomes medium dense Gravel = 5% 15 28 89 19.5 Sand = 85% 70 -70 Fines = 10% Gray water return PQ No recovery 0 13 Brownish gray sandy silt with gravel, very dense 16 24/3" 33 Sampler refusal Rods drop 24" from 73.3' to 75.5'

75 -75

CORALLINE DETRITUS 17 1/12" 61 40.9 Yellowish tan silty coralline gravel with sand Gs = 2.84 PQ (GM), very loose, wet 0 No water return 14 No recovery 18 100/4" 100 Brownish gray silty coralline gravel with sand (GM), very dense, wet Sampler refusal 19 50/3" 44 contains coralline gravel and cobbles, moderately No water return hard 80 -80 No water return PQ 57 15

Off white subangular coralline gravel with silty 20 35 72 26.1 80.5 sand (GM), medium dense, wet grades with coarser gravel, loose 21 8 44 85 -85 contains off white coral gravel and cobbles PQ 23 16

White to tan silty subangular coralline gravel with 22 10 56 coarse to medium grained sand (GM), very loose, No water return wet

23 4 39 becomes very loose to loose 90 -90 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-14 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-16 SEWER BASIN FACILITIES Sheet 4 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY,

PQ contains gravel sized coral reef limestone 29 17 fragments No water return

Off white silty subangular coralline gravel with 24 22 67 coarse to medium grained sand (GM), loose, wet

25 13 56 becomes medium dense 95 -95

PQ 0 18 No recovery

becomes loose 26 14 56

27 6 50 22.0 Gs = 2.80 100 -100

PQ contains gravel sized coral fragments No water return 17 19

Gravel =19% Off white silty sand with coralline gravel (SM), 28 36 67 Sand = 57% medium dense, wet Fines = 24%

29 18 50 21.0 105 -105

PQ contains gravel sized coral fragments 29 20 No water return

Tan silty coralline gravel with sand (GM), medium 30 34 61 21.5 70.9 dense, wet TXUU

110 -110 contains gravel and cobble sized coral fragments PQ 17 21 No water return

31 30 44 19.9 74.3 TXUU

115 -115 PQ 14 contains gravel and cobble sized coral reef 22 limestone fragments No water return

becomes very dense 32 30/3" 100 Sampler refusal

PQ 0 23 No recovery 120 -120

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-14 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-16 SEWER BASIN FACILITIES Sheet 5 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY,

becomes medium dense 33 44 67

125 -125 PQ 38 contains gravel to cobble sized coral fragments No water return 24

PQ contains more cobble sized coral reef limestone 130 33 -130 25 fragments No water return

PQ 135 40 -135 26 contains gravel sized coral fragments and basalt gravel No water return

BASALT LAVA FLOWS Gray basalt, slightly weathered, hard, moderately fractured

PQ becomes slightly vesicular basalt, slightly 140 60 33 -140 27 weathered, hard, closely to intensely fractured

Gray basalt with brown weathering, moderately hard, intensely fractured PQ 33 13 grades to brown highly weathered, moderately 28 145 hard basalt cobbles -145

contains gravel sized brown highly weathered basalt PQ 40 29

150 -150

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-14 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-16 SEWER BASIN FACILITIES Sheet 6 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, Gray basalt, highly to moderately weathered, moderately hard to hard, intensely fractured to crushed, brown stains in joints

PQ 40 17 30

155 -155

CORALLINE DETRITUS Off white coralline cobble, strongly cemented, moderately hard

PQ 160 22 -160 31 contains gravel sized coral gravel fragments

MARINE DEPOSIT Orangish brown silt with trace fine to medium PP = 1.67 tsf grained sand (ML), wet 34 19 100 becomes stiff

CORALLINE DETRITUS 165 Off white poorly graded coralline gravel (GP), wet-165 PQ 26 32

35 10 6 becomes very loose

Per driller, sample slipping out at core 170 -170 barrel, unable to PQ 0 sample 33 No recovery

PQ 175 0 -175 34 No recovery

36 15/3" 0 becomes very dense No recovery

OLDER ALLUVIUM 37 21 100 Brown with specks of orangish brown elastic silt (MH), very stiff, wet 180 -180

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-14 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-16 SEWER BASIN FACILITIES Sheet 7 of 7

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, PQ 97 Brown elastic silt with subrounded basalt gravel 35 (MH), wet No water return

Brownish gray silty basalt gravel

PQ 185 50 -185 36 No water return CORALLINE DETRITUS Off white to tan well graded coralline gravel

PQ 190 30 -190 37 No water return

PQ grades with cobble sized coralline debris 195 37 -195 38 No water return

PQ 73 39 No water return

200 -200 Boring completed at 200.0 feet below existing ground surface on 9/27/2010

Summary of Groundwater Levels Date Depth Below Ground 9/22/10 6.75' 9/23/10 5.5' 9/24/10 4.5' 9/27/10 7.0'

205 -205

210 210

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-14 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-17 SEWER BASIN FACILITIES Sheet 1 of 6

LOCATION: KAKAAKO WATERFRONT PARK, OAHU, HAWAII DATE(S) DRILLED: 9-9-10 to 9-21-10 GROUND SURFACE ELEVATION: N/A LOGGED BY: L. OKIMOTO CHECKED BY: J. KWONG GROUNDWATER LEVEL / DATE: SEE END OF LOG HAMMER TYPE: SAFETY HAMMER WEIGHT/DROP: 140 LBS / 30 IN CONTRACTOR: HAWAII TEST BORINGS, INC. DRILLING METHOD: 4-INCH SSA, WASH BORE, PQ WIRELINE DRILL EQUIP: MOBILE DRILL B-53 BOREHOLE BACKFILL: CEMENT GROUT

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 0 0 2" Asphalt Concrete Pavement Auger grinding 0' to 5' FILL Brown silty coralline gravel (GM), moist

5 -5 PP = 2.75 tsf Brown elastic silt with sand and coral and basalt 1 43 72 gravel (MH), hard, moist

10 -10 Black silty angular basalt gravel with sand and 2 53 100 trace shells (GM), medium dense, wet

Dark gray water return

15 -15 Off white silty coralline gravel with sand (GM), 3 2 11 very loose, wet

becomes tan, grades with more sand, medium 4 19 39 dense

Off white water return 20 -20 Off white, gray, and black coralline and basalt with PQ-1 33 gravel with trace glass fragments

Sampler refusal 5 14/3" 0 CORALLINE DEPOSIT Off white to gray moderately cemented coral reef No recovery limestone cobbles and gravel, contains fissures and voids, moderately hard, wet

25 PQ-2 32 12 -25

grades with silty coralline gravel with sand and 6 26 50 shell fragments (GM), medium dense, wet 27.4

CORAL REEF LIMESTONE No water return

30 Off white to gray coral reef limestone, hard, -30 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-15 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-17 SEWER BASIN FACILITIES Sheet 2 of 6

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 30 intensely to closely fractured, medium porosity PQ-3 100 83

No water return

becomes more off white, moderately hard to hard contains voids and fissures

35 PQ-4 63 42 -35

contains gravel sized fragments

contains cobble and gravel sized coral fragments No water return

40 PQ-5 18 -40 No water return CORALLINE DETRITUS Off white silty coralline gravel with sand (GM), weakly cemented, medium dense, wet

7 22 50 27.5

No water return

45 -45 PQ-6 0 No recovery

becomes tan to grayish, very loose 8 5 22

No water return

50 -50 contains off white to light gray finger coral and PQ-7 21 coral gravel

LAGOONAL DEPOSITS 9 4 72 64.3 Gray silty coral gravel (GM), loose to very loose, wet No water return

55 -55 contains coral gravel fragments and finger coral PQ-8 24

grades with more clay and trace sand, very loose 10 10 50 47.8 76.3 TXUU

11 52 83 59.8 60 Grayish tan clayey sand with coral gravel, very -60 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-15 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-17 SEWER BASIN FACILITIES Sheet 3 of 6

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 60 dense, wet No water return PQ-9 96 50 CORAL REEF LIMESTONE Off white to reddish tan coral reef limestone, hard, closely fractured No water return

PQ grades to crushed to closely fractured 65 100 43 -65 982 10

contains boulder, cobble and gravel sized coral No water return reef fragments, moderately hard contains fissures and some large voids

PQ 70 43 18 -70 11 CORALLINE DEPOSIT Off white silty coralline gravel with sand (GM), loose, wet

Gravel = 51% 12 16 50 10.8 72.8 Sand = 27% Fines = 22% grades with more fine gravel and silt 13 9 50 13.2 75 -75 No water return PQ No recovery 0 12

Gravel = 39% Off white well graded sand with silt and gravel 14 32 39 16.9 101.3 Sand = 56% (SW-SM), medium dense, wet Fines = 5% Gs = 2.720 15 9 67 becomes loose 16.6 80 -80 contains off white coralline gravel fragments No water return PQ 25 13

Gravel = 81% Off white coralline gravel with sand and trace silt 16 14 28 15.0 Sand = 18% (GW), loose, wet Fines = 1% becomes very loose to loose 17 4 33 85 -85 No water return PQ contains gravel sized coral fragments 25 14

becomes loose 18 17 44 18.0 70.9 TXUU

19 13 50 becomes medium dense 21.4 90 -90 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-15 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-17 SEWER BASIN FACILITIES Sheet 4 of 6

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, No water return PQ 29 15

Gs = 2.717 Off white silty coralline gravel with sand (GM), 20 86 83 19.9 80.3 dense, wet

21 26 72 becomes medium dense 20.4 95 -95 No water return PQ 0 16 No recovery grades with more gravel, loose 22 20 100

becomes medium dense 23 11 56 21.3 100 -100 No water return PQ 0 17 No recovery becomes very loose 24 3 33 24.7

grades with more silt and sand, pocket of 25 4 44 yellowish tan, very loose to loose 105 -105

PQ 0 18 No recovery

grades with more sand and cemented sand 26 12 89 cobbles, loose 21.2

No water return

110 -110 PQ 0 19 No recovery

27 22 83

contains cemented coralline gravel and cobble No water return fragments 115 -115 PQ 10 20

becomes medium dense 28 30 50

120 -120 No water return 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-15 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-17 SEWER BASIN FACILITIES Sheet 5 of 6

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, PQ 0 No recovery 21

becomes brownish tan with less silt 29 35 50

125 -125 PQ 0 No recovery 22

becomes off white with more silt 30 63 100

No water return

130 -130 PQ 0 23 No recovery

grades with less sand, more coral gravel and 31 49 78 cobble fragments

grades off white to tan No water return

135 -135 PQ 36 24

BASALT LAVA FLOWS 32 50/3" 100 Gray to yellowish brown basalt, slightly weathered, moderately hard, closely fractured Sampler refusal No water return

PQ grades moderately to closely fractured with No water return 140 95 58 -140 11708 25 vertical fissures

contains cobble sized basalt with weathering in No water return joints

PQ 145 25 0 -145 26

CORALLINE DEPOSIT Off white silty coralline gravel with sand and weakly to moderately cemented coralline cobbles 33 29 61 (GM), medium dense, wet No water return

150 -150

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-15 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-17 SEWER BASIN FACILITIES Sheet 6 of 6

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, PQ 21 contains off white coral cobble and gravel 27 fragments with large voids

becomes very dense 34 90/6" 100 Sampler refusal

155 -155 PQ 42 28 contains moderately to strongly cemented coralline cobble and gravel fragments

No water return becomes medium dense 35 21 83

grades with more strongly cemented coralline cobbles No water return 160 -160 PQ 45 29

grades with more sand, dense 36 40 72

No water return

165 -165 PQ 19 30

Sampler refusal 37 20/3" 0 No recovery CORAL REEF LIMESTONE PQ 93 41 Off white coral reef limestone, moderately hard to No water return 31 hard, closely to moderately fractured, low porosity

170 -170 Boring completed at 170.0 feet below existing ground surface on 9/21/2010

Summary of Groundwater Levels Date Depth Below Ground 9/09/10 9.2' 9/10/10 8.0' 9/20/10 7.3' 9/21/10 8.3'

175 -175

180 180

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-15 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-18 SEWER BASIN FACILITIES Sheet 1 of 6

LOCATION: AHUI STREET, OAHU, HAWAII DATE(S) DRILLED: 10-25-10 to 10-26-10 GROUND SURFACE ELEVATION: N/A LOGGED BY: D. GANDY CHECKED BY: J. KWONG GROUNDWATER LEVEL / DATE: 10-25-10 / 5.4 FT BGS HAMMER TYPE: SAFETY HAMMER WEIGHT/DROP: 140 LBS / 30 IN CONTRACTOR: YK DRILLING, LLC DRILLING METHOD: 4-INCH SSA, WASH BORE, PQ WIRELINE DRILL EQUIP: MOBILE DRILL B-54 BOREHOLE BACKFILL: CEMENT GROUT

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 0 0 6" Asphalt Concrete Pavement

24" Base Course Gray silty basalt gravel (GM), moist

FILL / LAGOONAL DEPOSIT Gray fat clay with trace sand (CH), moist

1 6 100 becomes soft to medium stiff Silty coralline gravel 5 -5 in sampler shoe Gray and tan coralline gravel with silt and sand (GM), wet

2 11 67 becomes stiff 10 -10

CORAL REEF LIMESTONE Off white and gray coral reef limestone, strongly cemented, hard, closely to intensely fractured, with voids and open work gravel layers, wet PQ-1 100 42

15 -15 Gray water return contains cobble and gravel sized coral limestone fragments

No water return at PQ-2 72 33 18' bgs

20 -20 becomes dark gray, hard, closely fractured, with No water return more voids infilled with a cemented gray silty sand

PQ-3 65 55

25 -25

No water return

grades with more cemented silty sand PQ-4 100 50

becomes less cemented with more gray silt 30 -30 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-16 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-18 SEWER BASIN FACILITIES Sheet 2 of 6

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 30 contains gray gravel sized coral fragments and gray cemented sandstone with trace shells, wet No water return

PQ-5 43 0

35 -35

Gray cemented sandstone (GW), medium dense, 3 66 17 wet

No water return

PQ-6 71 36 Tan coral reef limestone, moderately hard, closely to intensely fractured, with a zone of coralline 40 gravel, wet -40 grades hard to low hardness, moderately to closely fractured No water return

PQ-7 100 92

45 -45 contains voids, fissures and trace shell fragments No water return

PQ-8 100 68

50 -50 becomes crushed CORALLINE DEPOSIT White to off white silty fine coralline gravel with sand (GM), wet No water return

PQ-9 0 No recovery

55 -55

4 14 89 becomes medium dense

PQ 60 10 contains cobble and gravel sized coral fragments with sand, voids and shell fragments

60 -60 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-16 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-18 SEWER BASIN FACILITIES Sheet 3 of 6

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, 60

5 34 100 White silty coralline gravel with sand, medium 27.7 94.8 dense, wet White to off white silty coralline sand with gravel 6 4 100 27.6 (SM), very loose to loose, wet

PQ contains cobble and gravel sized coral fragments 21 11 with some voids 65 -65

7 19 67 becomes loose Sample distrubed

8 10 100 becomes loose to medium dense 27.5

PQ contains cobble and gravel sized coral fragments, 83 12 grades with large voids 70 -70

9 23 100 becomes loose 30.0 92.7 Gravel = 12% Sand = 56% 10 8 100 28.0 Fines = 32% Gs = 2.79

CORALLINE DETRITUS PQ 0 Grayish tan moderately cemented sandstone 13 No recovery 75 gravel (GW), wet -75

11 34 100 becomes medium dense

12 12 94 becomes grayish tan silty coralline gravel with 35.8 sand with less cemented sandstone

PQ contains gravel sized coral fragments MOHS = 3 - 5 100 14 80 -80

13 137 100 grades with more cemented sandstone, very 12.6 99.4 dense Gravel = 27% Tan silty sand with coralline gravel (SM), medium 14 13 78 19.3 Sand = 56% dense, wet Fines = 17%

PQ contains off white coralline sand and gravel sized 63 15 coral fragments 85 -85 Gravel = 61% Tan well graded gravel with silty sand (GW), 15 18 56 11.5 86.9 Sand = 34% loose, wet Fines = 5% TXUU 16 26 61 becomes medium dense 21.3 Gs = 2.80

PQ 100 16 90 -90 90% Draft Submittal Date Printed:1/31/2011 FIGURE A-16 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-18 SEWER BASIN FACILITIES Sheet 4 of 6

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, Tan well graded coralline gravel with sand (GW), 17 172 100 very dense, wet

CORAL REEF LIMESTONE White to tan coral reef limestone with voids, hard, PQ moderately fractured, wet 100 88 17

95 -95

contains more voids and fissures

PQ 100 70 181 18 MOHS = 4

End drilling 1445 100 -100 10/25/10 becomes closely to intensely fractured Begin drilling 0850 10/26/10

No water return PQ 93 48 366 19

becomes stained reddish brown

105 -105

No water return BASALT LAVA FLOWS Dark gray vesicular basalt, slightly weathered, PQ 100 73 hard, closely fractured, contains a seam of brown 20 silt, wet

110 -110

becomes moderately to closely fractured No water return

PQ 100 100 9596 21

115 -115

No water return Brown to tan cemented sandstone, moderately PQ 100 75 hard, closely to intensely fractured, wet 22

becomes cemented sandstone, low hardness, moderately to closely fractured 120 -120

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-16 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-18 SEWER BASIN FACILITIES Sheet 5 of 6

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, No water return Gray extremely to highly weathered basalt, low hardness, intensely fractured, wet

CORAL REEF LIMESTONE PQ 88 83 Off white coral reed limestone, moderately hard to 23 hard, closely fractured

125 -125

White coral, hard, closely to intensely fractured, wet No water return CORALLINE DETRITUS PQ 37 27 White silty well graded coralline gravel with sand 24 (GM), wet

130 -130

18 15 56 becomes medium dense

contains gravel sized subrounded coral fragments

PQ 57 25

135 -135

No water return

PQ 22 26

140 -140 Sample disturbed White well graded coralline gravel with sand 19 95 100 (GW), dense, wet

PQ contains gravel and cobble sized coral fragments 64 27 No water return

145 -145

No water return

PQ 90 28

150 -150

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-16 YOGI KWONG ENGINEERS, LLC SAND ISLAND WASTEWATER TREATMENT PLANT & LOG OF BORING B-18 SEWER BASIN FACILITIES Sheet 6 of 6

OTHER TESTS DEPTH (FT) AND REMARKS UCS, psi

DESCRIPTION LIMIT LOG LIQUID INDEX PLASTICITY WATER WEIGHT, pcf CONTENT, % RQD, % DRY UNIT GRAPHIC SAMPLING SAMPLE TYPE RESISTENCE SAMPLE NO. RECOVERY, % RECOVERY, INTERBEDDED CORAL REEF LIMESTONE No water return AND CORALLINE DETRITUS White coral reef limestone, hard, closely to intensely fractured, with large voids and gravel PQ 100 layers 29

155 -155 No water return contains gravel and cobble sized coral fragments, wet

PQ 48 30

160 -160

becomes gray and orangish brown No water return

PQ 50 31

165 -165 PP = 1.3 tsf OLDER ALLUVIUM 20 18 44 Brown mottled reddish brown elastic silt with trace TV = 0.68 tsf sand (MH), very stiff, wet

PQ 100 32 PP = 2.7 tsf TV = 0.9 tsf

170 -170

INTERBEDDED ALLUVIUM AND CORAL REEF PQ LIMESTONE 100 33 33 Brownish tan coral reef limestone interbedded with a brown elastic silt, low hardness, intensely fractured Boring completed at 174.0 feet below existing ground surface on 10/26/2010 175 -175

180 180

90% Draft Submittal Date Printed:1/31/2011 FIGURE A-16 YOGI KWONG ENGINEERS, LLC