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APPENDIX
<br />APPENDIX A
<br />FIELD INVESTIGATION
<br />The site was initially explored on May 29, 2018 by excavating eight 8-inch diameter borings to depths
<br />between 10 and 40'/2 feet below the existing ground surface using a truck -mounted hollow -stem auger
<br />drilling machine. Additional site exploration was performed on March 20, 2022 by excavating four
<br />8-inch diameter borings to depths between 45% and 55%Z feet below the ground surface for the purpose
<br />of percolation testing. Representative and relatively undisturbed samples were obtained by driving a
<br />3-inch, O. D., California Modified Sampler into the "undisturbed" soil mass with blows from a
<br />140-pound auto -hammer falling 30 inches. The California Modified Sampler was equipped with 1-inch
<br />high by 23/s-inch diameter brass sampler rings to facilitate soil removal and testing. Bulk samples were
<br />also obtained.
<br />The soil conditions encountered in the borings were visually examined, classified and logged in general
<br />accordance with the Unified Soil Classification System (USCS). The logs of the borings are presented
<br />on Figures Al through Al2. The logs depict the soil and geologic conditions encountered and the depth
<br />at which samples were obtained. The logs also include our interpretation of the conditions between
<br />sampling intervals. Therefore, the logs contain both observed and interpreted data. We determined the
<br />lines designating the interface between soil materials on the logs using visual observations, penetration
<br />rates, excavation characteristics and other factors. The transition between materials may be abrupt or
<br />gradual. Where applicable, the boring logs were revised based on subsequent laboratory testing.
<br />The locations of the borings are shown on Figure 2A.
<br />Geocon Project No. A9799-88-01 June 7, 2022
<br />PERCOLATION TEST DATA SHEET
<br />Project:
<br />4th & Mortimer
<br />Project No:
<br />A9799-88-01
<br />Date:
<br />3/30/2022
<br />Test Hole No:
<br />P2
<br />Tested By:
<br />JC
<br />Depth of Test Hole, DT:
<br />45
<br />USCS Soil Classification:
<br />SP
<br />Test Hole Dimensions (inches)
<br />Length
<br />Width
<br />Diameter (if round) =
<br />8
<br />Sides (if rectangular) _
<br />---
<br />---
<br />Sandy Soil Criteria Test*
<br />AD
<br />At
<br />Do
<br />Df
<br />Change in
<br />Greater than
<br />Time Interval
<br />Initial Depth
<br />Final Depth
<br />Water Level
<br />or Equal to
<br />Trial No.
<br />Start Time
<br />Stop Time
<br />(min)
<br />to Water (in)
<br />to Water (in)
<br />(in)
<br />6"? (y/n)
<br />1
<br />12:32
<br />12:57
<br />25
<br />492.0
<br />537.0
<br />45.0
<br />y
<br />2
<br />12:59
<br />13:24
<br />25
<br />492.0
<br />535.8
<br />43.8
<br />y
<br />*If two consecutive measurements show that six inches of water seeps away in less than 25 minutes, the test
<br />shall be run for an additional hour with measurements, taken every 10 minutes. Otherwise, pre-soak (fill)
<br />overnight. Obtain at least twelve measurements per hole over at least six hours (approximately 30 minute
<br />intervals) with a precision of at least 0.25".
<br />AD
<br />At
<br />Do
<br />Df
<br />Change in
<br />Time Interval
<br />Initial Depth
<br />Final Depth
<br />Water Level
<br />Percolation
<br />Trial No.
<br />Start Time
<br />Stop Time
<br />(min)
<br />to Water (in)
<br />to Water (in)
<br />(in)
<br />Rate (min/in)
<br />1
<br />1:27
<br />1:37
<br />10
<br />492.0
<br />529.8
<br />37.8
<br />0.26
<br />2
<br />1:40
<br />1:50
<br />10
<br />492.0
<br />529.2
<br />37.2
<br />0.27
<br />3
<br />1:52
<br />2:02
<br />10
<br />492.0
<br />528.3
<br />36.3
<br />0.28
<br />4
<br />2:04
<br />2:14
<br />10
<br />492.0
<br />528.6
<br />36.6
<br />0.27
<br />5
<br />2:17
<br />2:27
<br />10
<br />492.0
<br />528.6
<br />36.6
<br />0.27
<br />6
<br />2:30
<br />2:40
<br />10
<br />492.0
<br />528.3
<br />36.3
<br />0.28
<br />7
<br />8
<br />Infiltration Rate Calculation:
<br />Time Interval, At = 10 minutes Ho = 48.0 inches
<br />Final Depth to Water, Df = 528.3 inches Hf = 11.7 inches
<br />Test Hole Radius, r = 4 inches OH = 36.3 inches
<br />Initial Depth to Water, Do = 492.0 inches Havg = 29.9 inches
<br />Total Depth of Test Hole, DT = 540.0 inches
<br />AH(60r)
<br />f c
<br />At (r + 2Hf ,,tj)
<br />Infiltration Rate, It = 13.68 inches/hour
<br />Figure 9
<br />PERCOLATION TEST DATA SHEET
<br />Project:
<br />4th & Mortimer
<br />Project No:
<br />A9799-88-01
<br />Date:
<br />3/31/2022
<br />Test Hole No:
<br />P3
<br />Tested By:
<br />JC
<br />Depth of Test Hole, DT:
<br />45
<br />USCS Soil Classification:
<br />SP
<br />Test Hole Dimensions (inches)
<br />Length
<br />Width
<br />Diameter (if round) =
<br />8
<br />Sides (if rectangular) _
<br />---
<br />---
<br />Sandy Soil Criteria Test*
<br />AD
<br />At
<br />Do
<br />Df
<br />Change in
<br />Greater than
<br />Time Interval
<br />Initial Depth
<br />Final Depth
<br />Water Level
<br />or Equal to
<br />Trial No.
<br />Start Time
<br />Stop Time
<br />(min)
<br />to Water (in)
<br />to Water (in)
<br />(in)
<br />6"? (y/n)
<br />1
<br />10:21
<br />10:46
<br />25
<br />484.8
<br />511.2
<br />26.4
<br />y
<br />2
<br />10:47
<br />11:12
<br />25
<br />486.6
<br />511.2
<br />24.6
<br />y
<br />*If two consecutive measurements show that six inches of water seeps away in less than 25 minutes, the test
<br />shall be run for an additional hour with measurements, taken every 10 minutes. Otherwise, pre-soak (fill)
<br />overnight. Obtain at least twelve measurements per hole over at least six hours (approximately 30 minute
<br />intervals) with a precision of at least 0.25".
<br />AD
<br />At
<br />Do
<br />Df
<br />Change in
<br />Time Interval
<br />Initial Depth
<br />Final Depth
<br />Water Level
<br />Percolation
<br />Trial No.
<br />Start Time
<br />Stop Time
<br />(min)
<br />to Water (in)
<br />to Water (in)
<br />(in)
<br />Rate (min/in)
<br />1
<br />12:46
<br />12:56
<br />10
<br />484.2
<br />500.1
<br />15.9
<br />0.63
<br />2
<br />12:58
<br />13:08
<br />10
<br />484.8
<br />499.8
<br />15.0
<br />0.67
<br />3
<br />13:13
<br />13:23
<br />10
<br />478.8
<br />498.0
<br />19.2
<br />0.52
<br />4
<br />13:25
<br />13:35
<br />10
<br />479.1
<br />498.6
<br />19.5
<br />0.51
<br />5
<br />13:37
<br />13:47
<br />10
<br />480.0
<br />498.6
<br />18.6
<br />0.54
<br />6
<br />13:49
<br />13:59
<br />10
<br />482.4
<br />499.2
<br />16.8
<br />0.60
<br />7
<br />8
<br />Infiltration Rate Calculation:
<br />Time Interval, At = 10 minutes Ho = 55.8 inches
<br />Final Depth to Water, Df = 498.0 inches Hf = 42.0 inches
<br />Test Hole Radius, r = 4 inches OH = 13.8 inches
<br />Initial Depth to Water, Do = 484.2 inches Havg = 48.9 inches
<br />Total Depth of Test Hole, DT = 540.0 inches
<br />AH(60r)
<br />_
<br />�r
<br />At(r + 2H,1 'q)
<br />Infiltration Rate, It = 3.25 inches/hour
<br />Figure 10
<br />PERCOLATION TEST DATA SHEET
<br />Project:
<br />4th & Mortimer
<br />Project No:
<br />A9799-88-01
<br />I
<br />Date:
<br />5/30/2018
<br />Test Hole No:
<br />137
<br />Tested By:
<br />PZ
<br />Depth of Test Hole, DT:
<br />1 20.5
<br />USCS Soil Classification:
<br />SM
<br />Test Hole Dimensions (inches)
<br />Length
<br />Width
<br />Diameter (if round) =
<br />8
<br />Sides (if rectangular) _
<br />---
<br />---
<br />Sandy Soil Criteria Test*
<br />AD
<br />At
<br />Do
<br />Df
<br />Change in
<br />Greater than
<br />Time Interval
<br />Initial Depth
<br />Final Depth
<br />Water Level
<br />or Equal to
<br />Trial No.
<br />Start Time
<br />Stop Time
<br />(min)
<br />to Water (in)
<br />to Water (in)
<br />(in)
<br />1 6"? (y/n)
<br />1
<br />10:32
<br />10:57
<br />25
<br />120.0
<br />198.0
<br />78.0
<br />y
<br />2
<br />11:01
<br />11:26
<br />25
<br />120.0
<br />195.6
<br />75.64
<br />y
<br />*If two consecutive measurements show that six inches of water seeps away in less than 25 minutes, the test
<br />shall be run for an additional hour with measurements, taken every 10 minutes. Otherwise, pre-soak (fill)
<br />overnight. Obtain at least twelve measurements per hole over at least six hours (approximately 30 minute
<br />intervals) with a precision of at least 0.25".
<br />AD
<br />At
<br />Do
<br />Df
<br />Change in
<br />Time Interval
<br />Initial Depth
<br />Final Depth
<br />Water Level
<br />Percolation
<br />Trial No.
<br />Start Time
<br />Stop Time
<br />(min)
<br />to Water (in)
<br />to Water (in)
<br />(in)
<br />Rate (min/in)
<br />1
<br />11:29
<br />11:39
<br />10
<br />120.0
<br />164.4
<br />44.4
<br />324
<br />2
<br />11:40
<br />11:50
<br />10
<br />120.0
<br />160.8
<br />40.8
<br />353
<br />3
<br />11:52
<br />12:02
<br />10
<br />120.0
<br />162.0
<br />42.0
<br />343
<br />4
<br />12:04
<br />12:14
<br />10
<br />120.0
<br />160.8
<br />40.8
<br />353
<br />5
<br />12:15
<br />12:25
<br />10
<br />120.0
<br />160.8
<br />40.8
<br />353
<br />6
<br />12:27
<br />12:37
<br />10
<br />120.0
<br />160.8
<br />40.8
<br />353
<br />7
<br />8
<br />Infiltration Rate Calculation:
<br />Time Interval, At = 10 minutes Ho = 126.0 inches
<br />Final Depth to Water, Df = 160.8 inches Hf = 85.2 inches
<br />Test Hole Radius, r = 4 inches AH = 40.8 inches
<br />Initial Depth to Water, Do = 120.0 inches Havg = 105.6 inches
<br />Total Depth of Test Hole, DT = 246.0 inches
<br />AH(60r)
<br />�f =
<br />D.t(r + 2Havg)
<br />Infiltration Rate, It = 4.55 inches/hour
<br />FIGURE 7
<br />PERCOLATION TEST DATA SHEET
<br />Project:
<br />4th & Mortimer
<br />Project No:
<br />A9799-88-01
<br />I
<br />Date:
<br />5/30/2018
<br />Test Hole No:
<br />138
<br />Tested By:
<br />PZ
<br />Depth of Test Hole, DT:
<br />1 10
<br />USCS Soil Classification:
<br />SM
<br />Test Hole Dimensions (inches)
<br />Length
<br />Width
<br />Diameter (if round) =
<br />8
<br />Sides (if rectangular) _
<br />---
<br />---
<br />Sandy Soil Criteria Test*
<br />AD
<br />At
<br />Do
<br />Df
<br />Change in
<br />Greater than
<br />Time Interval
<br />Initial Depth
<br />Final Depth
<br />Water Level
<br />or Equal to
<br />Trial No.
<br />Start Time
<br />Stop Time
<br />(min)
<br />to Water (in)
<br />to Water (in)
<br />(in)
<br />6"? (y/n)
<br />1
<br />8:30
<br />8:55
<br />25
<br />60.0
<br />114.0
<br />54.0
<br />y
<br />2
<br />8:59
<br />9:24
<br />25
<br />60.0
<br />105.6
<br />45.6
<br />y
<br />*If two consecutive measurements show that six inches of water seeps away in less than 25 minutes, the test
<br />shall be run for an additional hour with measurements, taken every 10 minutes. Otherwise, pre-soak (fill)
<br />overnight. Obtain at least twelve measurements per hole over at least six hours (approximately 30 minute
<br />intervals) with a precision of at least 0.25".
<br />AD
<br />At
<br />Do
<br />Df
<br />Change in
<br />Time Interval
<br />Initial Depth
<br />Final Depth
<br />Water Level
<br />Percolation
<br />Trial No.
<br />Start Time
<br />Stop Time
<br />(min)
<br />to Water (in)
<br />to Water (in)
<br />(in)
<br />Rate (min/in)
<br />1
<br />9:29
<br />9:39
<br />10
<br />60.0
<br />67.2
<br />7.2
<br />2000
<br />2
<br />9:43
<br />9:53
<br />10
<br />60.0
<br />68.4
<br />8.4
<br />1714
<br />3
<br />9:54
<br />10:04
<br />10
<br />60.0
<br />67.2
<br />7.2
<br />2000
<br />4
<br />10:05
<br />10:15
<br />10
<br />60.0
<br />66.0
<br />6.0
<br />2400
<br />5
<br />10:19
<br />10:29
<br />10
<br />60.0
<br />66.0
<br />6.0
<br />2400
<br />6
<br />10:33
<br />10:43
<br />10
<br />60.0
<br />66.0
<br />6.0
<br />2400
<br />7
<br />8
<br />Infiltration Rate Calculation:
<br />Time Interval, At = 10 minutes Ho = 60.0 inches
<br />Final Depth to Water, Df = 66.0 inches Hf = 54.0 inches
<br />Test Hole Radius, r = 4 inches AH = 6.0 inches
<br />Initial Depth to Water, Do = 60.0 inches Havg = 57.0 inches
<br />Total Depth of Test Hole, DT = 120.0 inches
<br />AH(60r)
<br />�f =
<br />A.t(r + 2H,,,,y)
<br />Infiltration Rate, It = 1.22 inches/hour
<br />FIGURE 8
<br />GROUND SURFACE
<br />Z�r
<br />1�� WATERPROOF
<br />WALL
<br />RETAINING
<br />WALL
<br />Q..
<br />3/4" CRUSHED
<br />14
<br />ROCK
<br />d.
<br />9
<br />14i A ° �
<br />FILTER FABRIC ENVELOPE
<br />d
<br />MIRAFI 140N OR EQUIVALENT
<br />dJ
<br />2/3 H 4" DIA. PERFORATED ABS
<br />OR ADS PIPE - EXTEND TO
<br />DRAINAGE SYSTEM
<br />4
<br />A
<br />._dQ
<br />/i\
<br />FOUNDATION
<br />,4q _da
<br />ENVIRONMENTAL GEOTECHNICAL MATERIALS
<br />2807 MCGAW AVENUE - IRVINE, CA 92614
<br />PHONE (949) 491-6570
<br />I DRAFTED BY: PZ I CHECKED BY: JTA I
<br />NO SCALE
<br />RETAINING WALL DRAIN DETAIL
<br />MIXED -USE DEVELOPMENT
<br />EAST 4TH STREET & MORTIMER STREET
<br />SANTA ANA, CALIFORNIA
<br />JUNE 2022 PROJECT NO. A9799-88-01 FIG. 5
<br />GROUND SURFACE
<br />d,
<br />a d 18
<br />PROPERLY
<br />COMPACTED
<br />BACKFILL
<br />RETAINING DRAINAGE PANEL (J-DRAIN 1000
<br />WALL OR EQUIVALENT)
<br />WATER PROOFING
<br />BY ARCHITECT
<br />314" CRUSHED ROCK
<br />(1 CU. FT./FT.)
<br />FILTER FABRIC ENVELOPE
<br />` MIRAFI 140N OR EQUIVALENT
<br />4" DIA. SCHEDULE 40 PERFORATED
<br />PVC PIPE EXTENDED TO APPROVED
<br />OUTLET
<br />7..
<br />FOU14�NDATt4lION a a
<br />GEOCON
<br />W ES T, 1 N 4, �C�. OF)
<br />ENVIRONMENTAL GEOTECHNICAL MATERIALS
<br />2807 MCGAW AVENUE - IRVINE, CA 92614
<br />PHONE (949) 491-6570
<br />I DRAFTED BY: PZ I CHECKED BY: JTA I
<br />NO SCALE
<br />RETAINING WALL DRAIN DETAIL
<br />MIXED -USE DEVELOPMENT
<br />EAST 4TH STREET & MORTIMER STREET
<br />SANTA ANA, CALIFORNIA
<br />JUNE 2022 PROJECT NO. A9799-88-01 FIG. 6
<br />�1
<br />Architecture + Planning
<br />17911 Von Karman Ave.
<br />Suite 200
<br />Irvine, CA 92614
<br />ktgy.com
<br />949.851.2133
<br />KTGY Project No: 2017-0934
<br />Project Contact: Debbie Holland
<br />Email: dholland@ktgy.com
<br />Principal: Wil Wong
<br />Project Designer: D. Schoolmeester
<br />Project Director: Debbie Holland
<br />Developer
<br />ED OAK
<br />INVI'S'I'ML:N I'S
<br />4199 CAMPUS DRIVE
<br />IRVINE, CA 92612
<br />PHONE NO. (714) 342-2502
<br />O
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<br />06
<br />LO
<br />No. Date Description
<br />It is the clients responsibility prior to or during construction to notify the architect in writing
<br />of any perceived errors or omissions in the plans and specifications of which a contractor
<br />thoroughly knowledgeable with the building codes and methods of construction should
<br />reasonably be aware. Written instructions addressing such perceived errors or omissions
<br />shall be received from the architect prior to the client or clients subcontractors proceeding
<br />with the work. The client will be responsible for any defects in construction if these
<br />procedures are not followed.
<br />D ARcy�TF
<br />NJDATE
<br />REAUG�
<br />OFC A�_
<br />License Stamp
<br />GEOTECHNICAL
<br />REPORT
<br />N
<br />N
<br />O
<br />N
<br />1
<br />Ir-
<br />00
<br />0
<br />COPYRIGHT
<br />AO-86
<br />
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