" , ' , " " Q

Revised Measuring-Point Elevations for Selected Wells in the Waihee and lao Aquifer Areas on the Island of Maui

The USGS has been working with the National Geodetic Survey (NGS) to update benchmark and well measuring-point elevations in central Maui as part of a ground-water availability study with the Maui Department of Water Supply. The purpose of this effort is to ensure that water-level monitoring wells used in this study are tied to a common and accurate vertical datum.

Benchmark and reference-mark elevations were determined by the NGS using differential GPS (Global Positioning System) methods during September 2-4, and November 18-20, 2003.

Well measuring-point elevations were determined by the USGS using vertical leveling surveys from NGS benchmarks and USGS reference marks during September 22-26, and December 15-19,2003.

Measuring-point elevations for selected wells in the Waihee and lao aquifer areas are provided below. The difference between the previously reported and the revised measuring-point elevation for each well is also provided. Leveling notes and photographs of the measuring points are available in well folders maintained by the USGS Water Resources office in Honolulu.

It is important to recognize that the revised well JTleasuring-point elevations will result in a modification of the absolute water levels (referenced to mean sea level), but not the relative change in water levels measured over time (trend).

Historical water levels measured in these wells may be revised pending further research into possible causes for the differences between the previously reported and the revised well measuring-point elevations. Future water-level measurements will be based on the revised well measuring-point elevations.

Related links:

Ground-Water Availability in Central Maui - Project description

Recent HydrologiC Conditions. lao Aquifer area. Maui - Updated every three months

measuring-point elevations, in feet above mean sea level, for selected wells in the Waihee and lao aquifer areas on Maui rReleased Jari~ary 6~2-004;"lTp(iaied-May 2-1":2004usi~g'fi'nai"NG-S'-berich'm'a~k-elevatio;~:.-.--"".- .. --. fiRM-;" reiere~'~-e-ma'rk;M P ,'-measu'ri~g-point;-ft:-tE;et;'~=;-'~o-'dataf'''--''-''''--,,, ... ''''"--''''"------.-,,-"''''---''''.,,"'-,,.,," """",.",---""""""""."",,,-,,,," "".---".-.---". """"""-._""--".-,,- f··""'-·--·--'-·-·-· ".-.. _,,,-,-,,.,,,,.---.,,,,-" .. r"""·-"''''''-·'''''''-''''''·-''''-'~:'''-'''''''-'''''''-'''''''''.--''-··''''-·-""."";-... ,-"""".--"".".""".

Well name Well no. Revised1 'I 'Previous Difference2.INotes r~gar I~g prevlo~s we I

Imeasurlng-polnt elevations 3 I i

~----~~r~~--'r-~~~ irC-.-T-a-ku-m--iE-n-g-in-e-e-r-in-g-r-ep-o-rt--(1-/3-1-10-0-)---

Iprovides MP elevation of 639.37 ft for top

Kupaa 1 5731-03 638.77 639.37 -0.60

: casing, based on leveling from a ibenchmark elevation of 631.87 ft located

200 ft from well (Exhibit A-1, Mink & ; uen, 6/21/99). Driller's well-completion !report provides MP elevation of 638.10 ft

top of casing (5/20/99). No record of MP survey notes and initial benchmark.

i Drilling and Ed Valera (surveyor) ir-r"'nhi,nQri trigonometric leveling (using a

station and vertical angles) from naka's work and a carpenter's level to the initial height of casing.

, c Q f

I IUSGS reports MP elevation of 305.22 ft for

I ItoP of casing, based on leveling from nearby RM - 1-inch pipe (1/22/03). RM

• elevation of 304.50 ft provided by C. Kanoa TH 5731-05 303.56 305.22 -1.66 · Takumi Engineering. No record of RM

survey notes and initial benchmark. K. Tanaka set the 1/2-in. pipe using , trigonometric leveling (using a total station

I I ,andvertical angles). I

IKanoa 1 15731_021308 14 I

plDrille~s well-completion report has

-- _Ielevation of 309.15 ft for top of pump base plate (5/29/99). No record of MP surveyor linitial benchmark.

I,Driller's well-completion report has MP elevation 281.83 ft for top of sounding tube

. Kanoa 2 5731-04 280.48 -- -- ;1(6/7/00). C. Takumi Engineering report (Aug. 2000) has 281.38 ft for top of Isounding tube (Exhibit A, Mink & Yuen, 7/12/00).

I 'USGS reports MP elevation of 285.23 ft for

I top of measuring tube, based on leveling from nearby RM - 3/4 inch pipe (8/12/97). RM elevation of 266.63 ft given by W.S. Unemori Engineering. No record of RM survey notes and initial benchmark in well

· folder, however, Unemori confirms this I

1 : elevation from their notes. From I North 5631-02 283.76 285.23 -1.47

information provided by Reed Ariyoshi of Waihee 1 . W.S. Unemori, and Wendy Taomoto,

MOWS, the best estimate of the difference between the top of the casing prior to pump installation and the measuring tube after installation is 1.01 ft (old casing Ihigher in elevation). As a result, the old mp I

1 for data prior to August 1997, 284.78 ft, is , Ivery close to the new measuring tube I I

I lelevation plus 1.01 ft (284.77 ft).

I IHeight of measuring point modified after IPump installation. Measuring tube modified twice since pump installation in 1997 and Ileveling on 8/12/97. USGS reports MP lelevation of 284.39 ft for top of measuring tube on 8/12/97. USGS reports MP ,

lelevation of 284.33 ft for top of measuring North

5631-03 283.62 jtube on 3/30/99 after first modification, Waihee2 i -- -- based on measuring up from base plate

I lelevation of 284.11 ft. Previous leveling on I I I 18/12/97 and 3130199 are based on RM , I j(3/4-inch pipe) elevation of 266.63 ft 1

Iprovided by W.S. Unemori Engineering. No

I Irecord of RM survey notes and initial Ibenchmark in well folder, however,

I IUnemori confirms this elevation. I

o

WaiheeTH FF A1

Waiehu TH 5430-04 380.95

D

5430-05 1 381.16 • Waiehu Deep

Waiehu TH 5431-01 492.15

B

Q

248.05 FIDrilier's well-completion report provides lelevation of 248.05 ft for top of drilling

-1.88 1,PlatfOrm (10/15/74). Surveyed from State of Hawaii benchmark U-6: 250.37 ft (1974). INo record of survey notes.

,.....-----'-i----IUsGs reports MP elevation of 380.66 ft for itop of 1. 75-inch PVC casing, based on ileveling from nearby RM - "X" chiseled in

380.66

380.84

492.51

!concrete at entrance to TH D shelter 0.29 j(8/23/85). RM elevation of 380.01 ft

Iprovided by Dan lum, DOWAlD (8/29/83). INo record of RM survey notes and initial Ibenchmark.

.-------'IUSGS reports MP elevation of 380.84 ft for ItOP of 10-inch casing, based on leveling "from RM - "X" chiseled in concrete at

0.32lentrance to TH D shelter (8/23/85). RM jelevation of 380.01 ft provided by Dan

j'lum, DOWAlD (8/29/83). No record of RM ,survey notes and initial benchmark .

.-----IUSGS reports MP elevation of 492.51 ft for Itop of 1.5-inch PVC casing (9/24/75). I However, later field notes show top of Icasing as 491.79, and top of surrounding Iwooden box as 492.51. No record of MP

Isurvey notes and initial benchmark .

. Probably surveyed from State of Hawaii Ibenchmark U-6: 250.37 ft (1974). Driller's lreport provides elevation of 493.97 ft for itop of drilling platform. Well has been 'Imeasured from top of wooden box since USGS started measuring well in July, '11982. Well modified 3/31/04 by USGS, . adding 0.74 ft to top of PVC casing. . IRevised MP (top of PVC casing) combines Ichanges due to recent surveying and I modification. Elevation of top of box was dowered by 0.42 ft from results of 12003/2004 surveying.

~Fr::- ~INotes in well folder show pump

.

I refur. biS.hment i.n 1998. Measure. men. t tUbe. W~iehu 5430-02 338.05 -- ilikely installed at that time. No prior IHelghts 2 !Ieveling notes or references in USGS well I I Ifolder.

I I ,------r~-----rl-N-or~m-a~n-S-a-it-o~E-n-g-in-e-e-rin-g-c--on~s-u-Ita~n-t-s,~

Waiehu TH 5430-03 415.65 E

416.75 -1.10

!Inc. provides MP elevation of 416.75 ft for Itop of 1-inch casing (9/14/82). No record of IMP survey notes and initial benchmark. iProbably surveyed from State of Hawaii Ibenchmark U-6: 250.37 ft (1974). Driller's Ireport provides elevation of 415 ft for land !surface.

'/ ,.

. 4

o Q

.-----.--~--r_---.,.__--r__----r_~~-----~------

USGS reports MP elevation of 353.79 ft (12/1/99). No record of MP survey and initial benchmark. Dan lum (DOWAlD)

5330-09 353.37 353.79 -0.42 provides MP elevation of 353.57 ft for Mokuhau 1 (Pump 2) 4 . access port at base of pump (1/17/72).

elevation of 353.17 ft for top of casing ,I

'. HAR. Austin Engineering provides

i'---... '--,--,-_::. .... I. r:.(6,;;;:;(,;;;:;41:.;;;;?.;.;;;~)..;..;.' '.;.;;;'" _,,;,,;,,;,,;_,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;,,;_1

Wailuku Shaft 33 FE132.17 FI~J]i~g~~E1~;~~iE:kftror i'-----'-'----- ;..-::.-....:...::.:.-i----'---'--.....:.:......--'IUSGS reports MP elevation of 551.33 ft for

Waikapu 1 5130-01 551.04 I 551.33

Waikapu 2 5130-02 518.96 519.33

-0.29

.Itop of 6-inch coupling, based on leveling ,from RM - 0.5 inch pipe located on the east Iside of the concrete foundation (4/11/75). HM elevation of 550.61 ft provided by Norman Saito Engineering, based on leveling from Wailuku Courthouse NGS benchmark (12/74). Dan lum (DOWAlD)

IProvid. es elevation of 552 .. 08 ft for top of 8-inch casing, and 551.15 ft for top of conductor pipe (5/14/74) .

.-----IUSGS reports MP elevation of 519.33 ft for 'Itop of casing, based on leveling from

-0.37 .. Waikapu 1 well MP elevation of 551.33 ft (6/21/83). DOWAlD as-built drawing provides elevation of 519.47 ft for top of 20~inch casing:

r---'---r--'-----IUSGS surveying on 12/29/03 to top of 6-

DWS Waikapu 5131-01 764.87 --Mauka

linch threaded coupling welded to plate that liS welded to the top of the 18-inch casing ',(highest point after removing plug). CWRM . well completion report and Water jResources International as-built drawing Iprovides elevation of 764.7 ft for top plate jwelded to 18-inch casing.

11 Revised well measuring-point elevations were determined by the USGS using vertical leveling from National Geodetic Survey benchmarks and reference marks in December 2003. NGS benchmark and reference mark elevations provided by NGS on 1/20/04. leveling notes and photographs of the measuring points are available in well folders maintained by the USGS Hawaii District Office.

r20~ff~;~~~'~~~~~~;;d-'b~~b~;~~ti'~~"'th;-~~~i~~-~-f;~~"";h~-";~~i~~d-·~~II~~"~~~·;i~~=~~i~~-;i~~~;i·~~· ......... .

)3 All in~or~~~~~_ co~~~~_ed .:~~~S well fO~~~_ .. ____ .. ____ ._. ___ .... _ ... __ ._._ ........ _ .. __ ._._. __ ... __ ... _ .................................. ..

1

4 Maui Department of Water Supply refers to this well as Mokuhau Pump 2 (Well 502) whereas J Commission on Water Resource Management well index refers to this well as Mokuhau 1.

, FROM: GLENN

TO: INIT.

~~KALEA,P. ~~~ER,G.

CHING, F. DANBARA, S.

~I,N. '"I' GOODING, K. t­

HARDY, R. HIGA, D. ICE,C. ~ IMATA, R.

----i-

\;Ll~k-

("tMMISSION ON WATER RESOURCE M{.lGEMENT

DATE: JUN -7 2005 SUSPENSE DATE:

TO:

KUNIMURA, I. NAKAMA,L. NAKANO, D. OHYE, M. SAKODA, E. SUBIA, S. SWANSON, S. UYENO, D. YODA, K. YOSHINAGA, M.

-

INIT:

~t ...... '--1 GLENN L SHEPHERD

4'77 SOUTH ALU ROAD WAILUKU HAWAII 96793

FOR:

Approval Signature Information

{04/05)

PLEASE:

See Me Review & Comment Take Action Type Draft Type Final File Xerox __ copies

, ,

'C') fk»<~~' ~ ~~ ~&!JS-

Key Central Mauin"'~D !R ",

water source closing Shaft 33, which provides nearly a quarter of needs, is too unsafe to operate AVEAGAR Staff Writer

WAll.UKU - Shaft 33, part of an old plantation irrigation system that supplies almost a quarter of the water used in Central and South Maui, needs to be closed, because of the threat of collapse.

No specific proposl;l1s are on the table, but the Board of Water Supply was told recently that it would cost millions of dollars to replace the old pas­sageway dug deep into the side of the slopes above Wailuku. .

,County Water Director George Tengan says a ~stimate of $2 million each to replace three wells ann pumps is not unreasonable. The request may

',. See SHAFT 33 on Page AS

Department of Water Supply I MYLES FUJiNAKA photo

From. 406 feet up the slopes above Wailuku town, Shaft 33 descends deep into the side of the West Maui Mountains to a chamber where pumps draw from three wells in the lao aquifer. '

···graphl.: not to scala

r

The Maul News I TRESSA VERBER graphic

MOlOKAI

The Islands

World Cities

All forecasts and maps provided by AccuWeather, Inc. ©2005

National Cities Today Monday

City Hi Lo W Hi Lo W ~:-:'/"i·:\i5f:;8g}>.t5~v.'·~;/4t:/'l~~·~··f': Amarillo 83 61 s 89 63 s ~~':,::\~·~i\~.:t:.:'·i'·.··~<.~·.·P¢ Atianta' .. 87 68 t' 87 6'S t ~!~i1+\;~':tf4f;~·~:i"~t; .. ~f'; Baltimore 88 68 s 86 66 t ~ft)J't·.~';·',.92'·,:'7t··'P<I·"~t'·~~t, Billings 80 53 pc 69 46 t filitfnil1g11li\/1'!" ';8Ji",'7Q't '137.791.:. Bismarck 77 50 sh 82 60 s

Shown is today's weather. Temperatures are today's highs and

tonight's lows.

Weather (W): s-sunny, pc-partly cloudy, c-cloudy, sh-showers, t-thunderstorms, r-rain, sf-snow flurries, sn-snow, i-ice.

;$:44 p.m. 1t..1 IU:UI p.lII. U.o l!&t;1··ij't;;~ltii;?·';;·;;1·j·;)·ii!.$;j;'m:;5.·4'1:J ""~4~2d p.m:· "2.7' 10:49 p.";;:' '0.5

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3:40 p.m. 2.6 10:31 p.m. 0.9

Lahaina Day High Ft. Low Ft. ~%:;.,.a}j%!;;t'~f:(lr.~.j~~fi1l}~

3:48 p.m. 2.3 10:08 p.m. 0.7 _%~.i1:%';f£'i.i~il:t~~

4:22 p.m. 2.3 10:50 p.m. 0.7 ~._."8}):)fi'fl;lttlW?\A~iff't)~

4:58 p.m. 2.3 11 :32 p.m. 0.7

Maalaea Day High Ft. Low Ft. _tfj}r __ ~f.,'i,~i~~tii;;af.8ll':iU.~;:::;!Q.,3:

4:22 p.m. 2.4 10:26 R.m. 0.5 1Iiil??:t'Btifii'*~¥il"'!i.s:·,~i~,}i<h1.\;!;\~~

4:56 p.m. 2.4 11 :08 p.m. 0.5 "fl*! __ \\f\!fil:<j2i~m).~t;:;~J

5:32 p.m. 2.4 11 :50 p.m. 0.5

Precipitation Elsewhere ~~Z~~~_!?i&jlfi' ,/l4 Kihei 24 hrs ending 8 a.m. Sat. ........ 0.00" ~~'~~~.t_J:tif_

Sun and Moon ___ f0}t;¥tl./a~tq!4_wrB Sunset tonight ........................ 7:05 p.m. ~~I::?:;~i;i:~!i:f~!%}f~~i~';M~ Moonset today ........................ 6:27 p.m.

New First Full Last

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June 6 June 14 June 21 June 28

UV Index ~il1lWtiZ~i!;~_%!i$'~i»2~i<Mi~

~,;~iiij~j&~~;t,~;:i~~~ji~~~~i~i=) ~;~;,,~i;;·;~i;i~i::,~~;·;!};;;i~14~i)i~O~ The ultraviolet index is a guide to expo­sure to the sun. The higher the UV Index number, the greater the need for eye and skin protection.

Today's National Weather

the stored water. salinity ~' When that adit was being sunk It was possible to pump so hard

! in the late 1920s, a Honolulu bank in the beginning because the lao i, was being tom down and the door aquifer was not being exploited

was recycled. However, it cannot much. be opened, because of the pressure Wailuku Sugar Co. used the of the water behind it. . shaft water only when ditch water

!" Lima and his crew service Shaft failed. Shaft 33's output was suffi­~ 33 quarterly, and they take precau- cient to irrigate 2,000 acres. ~ tions. These include testing for According to Avery Chumbley,

dangerous gases and carrying president of Wailuku Agribusiness breathing equipment. Inc. (successor to Wailuku Sugar),

They also alert the Maui Fire the well was no longer pumped in ~ Department before they go in. the '8?s after Wailuku Sug~r initi­:t Lima says he's never had any ated ltS unsuccessful sWItch to t trouble in the 13 years he's been macadamia nuts and shut down the

I'· perfonning maintenance on the Wailuku Sugar Mill.

. Aquifer groundwater and surface water, ,. while Upcountry Maui depends

i'i Continued from Page A1 primarily on surface water drawn i er " from streams. ~. 'If so, that could create problems For Central and South Maui, !'r~ for the Maui Department of Water Mayor Alan Arakawa is seeking to it Supply, which is already pumping increase use of surface water for­i;;: lao aquifer close to its legal sus- merly serving Wailuku Sugar Co. '~. tainable yield of 20 million gallons fields, but the move is being chal­it! per day. lenged by a group demanding ~ The commission recently au- restoration of stream flows for tra­~~ thorized a research agreement with ditional uses such as taro growing, ~ the University of Hawaii for a pro} and to allow native stream fauna to :: ect to test and apply a model for es- recover. l,~ tim~ting sustainable yields of 16, Over the years, DLNR has )~ aqUlfers. . . drilled 10 deep monitor wells on ~;: In MaUl County, the aqUlfers to Oahu Maui and Hawaii to ob­} be examined are Ho~okowai, lao, serve 'properties of basal ~quifers.

I, Kualapuu on Molokat and eventu- The Honolulu Board of Water ; ally ~aihee, .when it gets a deep Supply and the U.S. Geological " momtor well m the next couple of Survey also have deep monitor ~ years.

Two of these, lao and Kualapuu, have been "designated" or taken under commission control for per­mits to withdraw water.

Sustainable yield is defined as the maximum rate at which water may be withdrawn from a source without impairing the utility or quality of the source.

f;~ "As stewards ofthe state's water

I,' resources, we must continually re­I visit and refine our estimates of I ground water availability as ne.w . technology and data become avall-

able," said Peter Young, chairman of the Board of Land and Natural

Ii Resources (which oversees the I Ii commission).

I' "It will affect management deci-l!i sions on land use, population and (I industry growth for years to

I come." ( I

, Groundwater basal aquifers pro- Congratulations Class of 2005 f I! vide more than 90 percent of

f I: Hawaii's drinking water. (I: In Maui County, aquifers are the Graduation Storewide

!; primary sources of drinking water Sale 15 % off Ii, for Molokai, Lanai, Hana and Cen- endsJune 30,2005

!. $, tral-South MauL West Maui is sus- Rainbow Mall Kihei 879-;877 (' ~ tained with a combination of , !;t~.

\

-'- ' anq' flCilry PUH'P"'15 '''"r>O--' _.,

upwelling in the aquifer. The basal lens that is the lao

aquifer is a deep layer of fresh wa­ter floating on heavier salt water that lies under all of the islands. The fresh water comes from rain that percolates into the ground in the watersheds on the upper slopes of the island.

When a well draWs from the fresh water lens, it reduces the weight of the fresh water at the point where the well draws water. If the pumping is not excessive, fresh water in the lens flows to re­place what the well is taking. But

wells . Work on a new deep well in lao

is scheduled to begin soon. The wells monitor water levels

in the aquifer and the concentration of salt in the water column.

Hawaiian islands are saturated witli water, and because fresh wa­ter is lighter than salt water, the rain that seeps through the rocks forms a lens floating on the salt water that infiltrates from the ocean.

In a productive area like lao Val­ley, the fresh lens is more than 600 feet deep.

The fresh water, being lighter, also is pushed above sea level. At the water department's recently dug shallow well at Waikapu, for example, the water table was 1 7

i I i

'UI5l5""- ---,- "-,,_, '" and South Maui.

Ironically, since the mayor'~ of­fice regained control of water poli­cy (with the change of the County Charter approved in 2002), the water department is now looking to utilize additional water from the ditches, although Shaft 33 was sunk in the first place to replace unreliable surface flows.

The difference is that the closing of Wailuku Sugar/Agribusiness has sharply reduced the demand

See SHAFT 33 on the next page

feet above sea level. A standard hydrologic formula

says that for every foot of water above sea level, there are 40 feet of fresh water below sea level.

Therefore, the fresh lens at Waikapu was about 680 feet deep before pumping began.

The midpoint is defined as the depth where salinity rises to 250 parts per million.

The depth of the transition or mixing zone, which can be scores of feet thick, is a key factor in un~ derstanding the health of th~ aquifer. '

The commission's 1990 Water Resource Protection Plan uses a

SeeAQUIFE~ on the next page

local phonecomp,atiYi • . the phonecompanY.~hi$' 1 •

accLlra'te source of ,listi~J{I(;: , .... for in Hawaii. or:,~. '

, ,I.',;·"

HTVE~llowPages.com

- - - -- - ----~-----------

Shaft 33 Continued from Page A 1 show up in the 2007 county budg­et.

Other costs, which could be con­siderable, are being discussed with the owner, Kehalani Mauka.

Shaft 33, also called Wailuku Shaft, was one of the assets ac­quired by Stanford Carr when he bought the stock of Brewer Homes. The county has been using it for years. Neither C. Brewer nor Carr has been paid for the county's access to the water source.

"It's just the good will of the company," says Tengan.

Carr needs water meters for the continuation of his housing proj­ects at Kehalani, which at build-out will consume about 1.5 million gallons per day.

Both Kehalani and the Depart­ment of Water Supply have applied for withdrawal permits since the State Commission on Water Re­source Management took control of (or "designated") the lao aquifer in 2003.

Although there has been some attempt by public witnesses testify­

: ing at commission hearings to : present this as a conflict, neither of : the parties thinks so. And they ,have gotten support from Dr. Lawrence Miike, the water com­missioner who is taking the lead in the permit hearings.

At a hearing in Wailuku in April, , he indicated that the department , will continue to get water, whatev­'er the eventual arrangements be­, tween it and Kehalani. I The Wailuku Shaft was dug in . 1945-47 by a Los Angeles oil drilling firm. As a well it was and is a resounding success. But the

lhaft - technically an adit, not a I tunnel, because it has only one en­'II trance - which is about 5 feet in

I diameter, was never sealed with Gunnite (a form of concrete that is blasted onto tunnel walls to

~strengthen and waterproof them). ~ Use of the shaft was abandoned I around 1984 but restarted in \~ 1992. Although some water de­~ partment employees have been ~ down it, they no longer enter it rou­i, tinely, because of the hazard. ~ But Melvin Lima does. ~ "I don't see any risk except trip­~ ping and falling down," says Lima, a who owns Mel's Waterworks in ~ Honolulu and services under­~ ground systems throughout the I state. r~ Shaft 33 is not nearly as scary as r some others, Lima says. ~he ~ spookiest is an old sugar plantation 9 shaft in Kau on the Big Island. M A huge adit penetrates deep into

"

, Lanaihale, the ridge to the north and east of Lanai City, to tap the high level aquifer that provide

I, Lanai's fresh water. Well-lighted and roomy, it even supports a few

, ferns at its bottom, which also , presents the startling spectacle of a *' "-, __ 'I...._~l _____ .1"- ....J. ___ ' __ 1...l! __ .. •

Department of Water Supply I MYLES FUJINAKA photo

Unidentified workers examine one of the pumps Three pumps installed at the bottom of the shaft in Shaft 33 during a recent inspection that also in- are capable of drawing up to 15 million gallons of eluded a review of whether the facility complies water a day from the lao aquifer, although they with workplace safety standards, according to have been drawing only about 5 mgd over the past county Department of Water Supply officials. 12 years.

systems at the bottom of the shaft. If there were a cave-in, accord­

ing to Tengan, it might be possible to escape by a narrow, unlighted air shaft.

The Wailuku Shaft was sunk from the 406-foot elevation just above Wailuku and ends in a huge chamber (30 feet long, 22 feet wide and 58 feet high) whose floor is 26 Y:> feet above sea level, which was the "head" of water in 1947.

The pressure of the lens of fresh water floating on the heavier sea water was then 26 V:> feet above sea level. To keep the pump room free of water, its floor had to be higher than the water.

Since then, heavy pumping has lowered the head of water in the lao aquifer to 10 feet or less, rais­ing alarm about saltwater infiltra­tion, because the head signals the depth of the freshwater beneath it. For every foot of fresh water above sea level, there are 40 feet below.

Wells that reach 200 to 300 feet below sea level could be spoiled if the midpoint (where the salinity begins to be a problem) rises to their level.

From the floor of the Shaft 33 chamber, three wells were sunk 150 feet into the aquifer. (Ac­counts in The Maui News from 1947 say those vertical shafts were extended another 70 feet, but today only 150 feet is used.)

The three wells were gushers. Powered by more than 2,000 horsepower, three pump engines collected 15 million gallons per

Back in those days, he noted, the Shaft 33 pumps consumed so much of the island's electricity that Wailuku Sugar would need to call Maui Electric Co. to alert its gener­ator operators before the plantation would start its pumps.

In 1992, Shaft 33 was reopened because the county needed to back off pumping at Mokuhau, the wells developed -by the county in the 1950s as Kahului began its growth spurt.

Demand on the north half of the lao aquifer increased even more af­ter 1975, with the development of two large wells at Waiehu, as part of the Central Maui Source Joint Venture, the project that made pos­sible the development of South Maui.

Originally planned to tap a water source believed to be capable of providing 36 million gallons a day, the Waiehu wells and a 36-inch transmission system running from Waiehu to Kihei was designed to supply the Wailea Beach Resort and the Makena Resort, with other smaller developments along the way allowed to tap the system, paying fees that compensated the joint venture partners.

But the new Waiehu wells draw­ing down the aquifer, along with increasing demand in the still­growing Kahului area, had a nega­tive effect on the Mokuhau wells.

Water department engineers ac­knowledge that the Mokuhau wells were driven too close to each other - like three straws drawinQ' from

when the draw is high, the underly­ing salt water will begin to "up­well" or rise up to the point from which the water is being pumped.

The Shaft 33 wells were close together, too (just 10 feet apart), but they reached a very rich source of water and have been pumped more heavily with no signs of up­welling.

By the early '90s, however, de­mand on the overall lao aquifer had tripled over 30 years to nearly 20 million gallons a day, and wells throughout the system were ex­hibiting signs of stress.

At two monitoring sites in Waiehu, the level of the aquifer was down sharply. Test Hole E showed the height of the fresh wa­ter lens fell from I 8 to 20 feet above sea level in 1984 to a low of 9 feet in 2003, although reduced pumping has boosted the level to 13 feet in 2005.

Test Hole B was at 18 feet in 1989, and is fluctuating between 9 and 12 feet in 2004-05.

Shaft 33 was pumped at an aver­age of 5 million gallons per day be­ginning in I 992. The aquifer level went from a high of I 7 feet in 1997 to less than 8 feet between 2003 and 2004, rising back to 12 feet this year.

After the 1975 estimates that the lao aquifer would be capable of producing 36 mgd proved overly I

optimistic, the legal sustainable \1 yield of lao aquifer was reset at 20 mgd. Some critics think the actual C'llcotni-no.hla. .. ,;",,1....:1 : ............. n.-. .... 1"".-. ...

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o Michael S YoshinagalDLNRIStateHiUS

06/06/2005 05:20 AM

Key Central Maui water source closing By HARRY EAGAR, Staff Writer

Sunday, June OS, 2005 8:46 AM

o To Glenn R Bauer/DLNRlStateHiUS@StateHiUS, Faith F

Ching/DLNRIStateHiUS@StateHiUS, Susan R Danbara/DLNRlStateHiUS@StateHiUS, Neal D

cc

bcc

Subject Fw: MN: Key Central Maui water source closing

WAILUKU - Shaft 33, part of an old plantation irrigation system that supplies almost a quarter of the water used in Central and South Maui, needs to be closed, because of the threat of collapse.

No specific proposals are on the table, but the Board of Water Supply was told recently that it would cost millions of dollars to replace the old passageway dug deep into the side of the slopes above Wailuku.

County Water Director George Tengan says a guesstimate of $2 million each to replace three wells and pumps is not unreasonable. The request may show up in the 2007 county budget.

Other costs, which could be considerable, are being discussed with the owner, Kehalani Mauka.

Shaft 33, also called Wailuku Shaft, was one of the assets acquired by Stanford Carr when he bought the stock of Brewer Homes. The county has been using it for years. Neither C. Brewer nor Carr has been paid for the county's access to the water source.

"It's just the good will of the company," says Tengan.

Carr needs water meters for the continuation of his housing projects at Kehalani, which at build-out will consume about 1.5 million gallons per day.

Both Kehalani and the Department of Water Supply have applied for withdrawal permits since the State Commission on Water Resource Management took control of (or "designated") the lao aquifer in 2003.

Although there has been some attempt by public witnesses testifying at commission hearings to present this as a conflict, neither of the parties thinks so. And they have gotten support from Dr. Lawrence Miike, the water commissioner who is taking the lead in the permit hearings.

c

At a hearing in Wailuku in April, he indicated that the department will continue to get water, whatever the eventual arrangements between it and Kehalani.

The Wailuku Shaft was dug in 1945-47 by a Los Angeles oil drilling firm. As a well it was and is a resounding success. But the shaft - technically an adit, not a tunnel, because it has only one entrance - which is about 5 feet in diameter, was never sealed with Gunnite (a form of concrete that is blasted onto tunnel walls to strengthen and waterproofthem).

Use of the shaft was abandoned around 1984 but restarted in 1992. Although some water department employees have been down it, they no longer enter it routinely, because of the hazard.

But Melvin Lima does.

"I don't see any risk except tripping and falling down," says Lima, who owns Mel's Waterworks in Honolulu and services underground systems throughout the state.

Shaft 33 is not nearly as scary as some others, Lima says. The spookiest is an old sugar plantation shaft in Kau on the Big Island.

A huge adit penetrates deep into Lanaihale, the ridge to the north and east of Lanai City, to tap the high level aquifer that provide Lanai's fresh water. Well-lighted and roomy, it even supports a few ferns at its bottom, which also presents the startling spectacle of a blue bank vault door holding back the stored water.

When that adit was being sunk in the late 1920s, a Honolulu bank was being torn down and the door was recycled. However, it cannot be opened, because of the pressure of the water behind it.

Lima and his crew service Shaft 33 quarterly, and they take precautions. These include testing for dangerous gases and carrying breathing equipment.

They also alert the Maui Fire Department before they go in.

Lima says he's never had any trouble in the 13 years he's been performing maintenance on the systems at the bottom of the shaft.

If there were a cave-in, according to Tengan, it might be possible to escape by a narrow, unlighted air shaft.

The Wailuku Shaft was sunk from the 406-foot elevation just above Wailuku and ends in a huge chamber (30 feet long, 22 feet wide and 58 feet high) whose floor is 26 112 feet above sea level, which was the "head" of water in 1947.

The pressure of the lens of fresh water floating on the heavier sea water was then 26 112 feet

, c o above sea level. To keep the pump room free of water, its floor had to be higher than the water.

Since then, heavy pumping has lowered the head of water in the lao aquifer to 10 feet or less, raising alarm about saltwater infiltration, because the head signals the depth of the freshwater beneath it. For every foot of fresh water above sea level, there are 40 feet below.

Wells that reach 200 to 300 feet below sea level could be spoiled if the midpoint (where the salinity begins to be a problem) rises to their level.

From the floor of the Shaft 33 chamber, three wells were sunk 150 feet into the aquifer. (Accounts in The Maui News from 1947 say those vertical shafts were extended another 70 feet, but today only 150 feet is used.)

The three wells were gushers. Powered by more than 2,000 horsepower, three pump engines collected 15 million gallons per day of pure water, with very low salinity.

It was possible to pump so hard in the beginning because the lao aquifer was not being exploited much.

Wailuku Sugar Co. used the shaft water only when ditch water failed. Shaft 33 's output was sufficient to irrigate 2,000 acres.

According to Avery Chumbley, president of Wailuku Agribusiness Inc. (successor to Wailuku Sugar), the well was no longer pumped in the '80s after Wailuku Sugar initiated its unsuccessful switch to macadamia nuts and shut down the Wailuku Sugar Mill.

Back in those days, he noted, the Shaft 33 pumps consumed so much of the island's electricity that Wailuku Sugar would need to call Maui Electric Co. to alert its generator operators before the plantation would start its pumps.

In 1992, Shaft 33 was reopened because the county needed to back off pumping at Mokuhau, the wells developed by the county in the 1950s as Kahului began its growth spurt.

Demand on the north half of the lao aquifer increased even more after 1975, with the development of two large wells at Waiehu, as part of the Central Maui Source Joint Venture, the project that made possible the development of South Maui.

Originally planned to tap a water source believed to be capable of providing 36 million gallons a day, the Waiehu wells and a 36-inch transmission system running from Waiehu to Kihei was designed to supply the Wailea Beach Resort and the Makena Resort, with other smaller developments along the way allowed to tap the system, paying fees that compensated the joint venture partners.

But the new Waiehu wells drawing down the aquifer, along with increasing demand in the still-growing Kahului area, had a negative effect on the Mokuhau wells.

e .~.

Water department engineers acknowledge that the Mokuhau wells were driven too close to each other - like three straws drawing from the same point in an ice cream float - and heavy pumping aggravates upwelling in the aquifer.

The basal lens that is the lao aquifer is a deep layer of fresh water floating on heavier salt water that lies under all of the islands. The fresh water comes from rain that percolates into the ground in the watersheds on the upper slopes of the island.

When a well draws from the fresh water lens, it reduces the weight of the fresh water at the point where the well draws water. If the pumping is not excessive, fresh water in the lens flows to replace what the well is taking. But when the draw is high, the underlying salt water will begin to "upwell" or rise up to the point from which the water is being pumped.

The Shaft 33 wells were close together, too Gust 10 feet apart), but they reached a very rich source of water and have been pumped more heavily with no signs of upwelling.

By the early '90s, however, demand on the overall lao aquifer had tripled over 30 years to nearly 20 million gallons a day, and wells throughout the system were exhibiting signs of stress.

At two monitoring sites in Waiehu, the level of the aquifer was down sharply. Test Hole E showed the height of the fresh water lens fell from 18 to 20 feet above sea level in 1984 to a low of9 feet in 2003, although reduced pumping has boosted the level to 13 feet in 2005.

Test Hole B was at 18 feet in 1989, and is fluctuating between 9 and 12 feet in 2004-05.

Shaft 33 was pumped at an average of 5 million gallons per day beginning in 1992. The aquifer level went from a high of 17 feet in 1997 to less than 8 feet between 2003 and 2004, rising back to 12 feet this year.

After the 1975 estimates that the lao aquifer would be capable of producing 36 mgd proved overly optimistic, the legal sustainable yield of lao aquifer was reset at 20 mgd. Some critics think the actual sustainable yield is much less.

Shaft 33's 5 mgd is the single biggest source of water for Central and South Maui.

Ironically, since the mayor's office regained control of water policy (with the change of the County Charter approved in 2002), the water department is now looking to utilize additional water from the ditches, although Shaft 33 was sunk in the first place to replace unreliable surface flows.

The difference is that the closing of Wailuku Sugar/Agribusiness has sharply reduced the demand for irrigation water.

Driven at a 30-degree angle, the shaft is 764 feet long, and penetrates 647 feet into the side of

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the mountain, measured horizontally.

Tengan says discussions are close to a resolution over how to handle the abandonment and replacement of Shaft 33.

According to David Blane, a former county planning director who worked for Brewer Homes and now for Carr's SDC Development, drilling vertical wells in the same location would be a likely choice, because it would almost guarantee hitting the big, rich source again.

The department is also working to spread out pumping in the lao aquifer, not to increase the total draw but to better manage the resource and prevent upwelling at any single source.

The amount needed from the replacement wells could be less than 5 mgd, according to how successful new wells at Waikapu and lao Tank prove.

In any case, the state commission cannot permit withdrawal of more than 20 mgd, so new sources must be found somewhere else.

Kehalani will have to pay for source development of the 1.5 mgd it wants and also for closing Shaft 33.

T engan says it may not be necessary to completely refill the shaft. Whether environmental regulators will agree to allowing Kehalani Mauka/Carr to abandon the machinery underground remains to be determined.

The machinery could be brought out, says Lima, but it would be "a big job."

It probably would be bigger than installing the equipment in a deep hole in the ground in the first place.

When Wailuku Sugar announced it would seek to tap lao groundwater - the first significant use of that resource - the cost was estimated at $200,000.

But by the time the water flowed, the cost had risen to $500,000.

"That's not unusual, even today," says Tengan.

Harry Eagar can be reached at heagar@mauinews.com.

Copyright © 2004 The Maui News.

This e-mail is intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. Dissemination, distribution or copying of this e-mail or the information herein by anyone other than the intended recipient, or an employee or agent responsible for

delivering the message to the intended recipient, is prohibited. If you have received this e-mail in error, please contact the sender of this e-mail.

,

FROM: Charley

TO:

_BAUER, G. _GOODING, K _ FUJII, N. _OHYE, M. _JINNAI, R.

_IMATA,R. _ NAKAMA, L. _HIGA,D. _UYENO, D _MATHIAS, T

COM. e:SION ON WATER RESOURCE MANAG· .. ,<ENT

DATE: n Scp D2.- SUSPENSE DATE

TO: INIT. L HARD .... Y, R. ~ _ HIFlANO, E.

~·ODA'E.

AKANO, D. NISHIOKA, L DANBARRtA~

~ SUBIA, S. nlr'" _YODA, K. .

L- Approval ~ Signature

Information

1':'''f~ ~ ",pw~ q+ ... ~~ '3 H-t...- sl r fit 'ft....e-. ~) ~ ~W :..fo

14DecOO

PLEASE: __ Review & Comment __ Type Draft

2- Type Final File

__ Xerox __ ·copies Take Action:

Please See Me

BENJAMIN J. CAYETANO GOVERNOR OF HAWAII

Mr. Rick Prahler Hawaii Land and Farms 745 Fort Street, #2110 Honolulu, HI 96813

Dear Mr. Prahler:

o o

STATE OF HAWAII DEPARTMENT OF LAND AND NATURAL RESOURCES

COMMISSION ON WATER RESOURCE MANAGEMENT P.O. BOX 621

HONOLULU, HAWAII 96809

September 24, 2002

Water Use Reporting Notice Wailuku Shaft "33" (Well No. 5330-05)

GILBERT S. COLOMA-AGARAN CHAIRPERSON

BRUCE S. ANDERSON MEREDITH J. CHING

CLAYTON W. DELA CRUZ BRIAN C. NISHIDA

HERBERT M. RICHARDS, JR.

LlNNEL T. NISHIOKA DEPUTY DIRECTOR

We understand that Hawaii Land and Farms is the current owner of Wailuku Shaft or "Shaft 33". The well owner bears the responsibility for reporting use of their wells, pursuant to § 13-168-7, HAR.

However, it is our understanding that there is some agreement in place for the Maui Department of Water Supply to use this well, and we are, in fact, receiving water use reports for this well from them. Should this situation change, please continue to report any use from this well on the enclosed form.

If you have any questions, please contact Charley Ice of the Water Commission staff at 587-0251.

CI:ss Enclosure

Sincerely,

~,~ LINNEL T. NISHIOKA Deputy Director

· , '\

CO,)~ISSION ON WATER RESOURCE MAN~,.JMENT (10/99)

, \ FROM:_--"L ..... IN=N.1!IE~L'---____ DATE:J\' " 1)0 SUSPENSEDATE, _____________ _

TO:

IBAUER,G. _CHING,F. _ DANBARA, S. _fUJII, N. ..:L HARDY, R. _~IGA,D. -L HIRANO, E. _ICE,C. _IMATA, R. _JINNAI, R. _ KUNIMURA, I.

_LUM,A _NAKAMA, L. ~NAKANO,D.

NISHIOKA, L. 70HYE,M. ~AKODA,E.

_ UBIA,S. _ SWANSON, S. _UYENO,D. _YODA,K.

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_Approval _Signature

Information f 2, -- ,,)

PLEASE:

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o o United States Department of the Interior

u.s. GEOLOGICAL SURVEY

WATER RESOURCES DIVISION

677 ALA MOANA BLVD, SUITE 415 HONOLULU, HAWAII 96813

PHONE (808) 522-8292 (FAX 522-8298)

Mr. David R. Craddick, Manager Department of Water Supply County ofMaui P.O. Box 1109 Wailuku, Hawaii 96793-7109

Dear Mr. Craddick:

March 24, 2000

The USGS is currently monitoring water levels in Shaft 33 (Well 5330-05) manually and using a data recorder and pressure transmitter (supplied by your department). However, there appears to be a problem with the transmitter. Since about January 1999, the water level recorded from your transmitter has steadily drifted lower than the manual measurements. Currently, it is recording water levels about 1 foot lower than the true measurements. Simple line stretch or slippage would show recorded water levels higher than the manual measurements, which is the opposite of what we are detecting. Todd Presley of our office called the transmitter manufacturer (Keller) and they offered little immediate help other than to suggest opening up the transmitter and seeing if there is an obvious problem. They did say that they would recalibrate old transmitters. We will continue with periodic manual measurements but discontinue recording the transmitter readings because we can no longer be confident of the quality of the data.

On another matter related to water-level monitoring, we have been unable to locate a suitable well in the Haiku area to be used for making periodic water-level measurements. Therefore, we would like to

substitute by monitoring the Kanoa Observation well in the Waihee area and wait until a monitoring well is drilled in the Haiku area before we collect more data there.

If you have any additional questions, please feel free to call Steve Gingerich or me at our office at 522-8290.

Respectfully,

cv-~~ Gordon Tribble District Chief

cc: Commission on Water Resources Management

.-- o -a __ WAIL~,!!_SINESS co., INC • ......

Linnel Nishioka Department of Land and Natural Resources Commission on Water Resource Management P. O. Box 621 Honolulu, Hawaii 96809

Dear Mr. Nishioka,

o REtE1VED

'OD JAN 5 AID: n 5

This letter is in regards to the Wailuku Shaft 33. Wailuku Agribusiness has been reporting its use over the past months. We no longer own Wailuku Shaft 33. Please refer all matters concerning Shaft 33 to Hawaii Land and Farming.

Should you have any questions concerning this please call me at 244-2208.

Si4'l# Clayton Suzuki Land Manager

255 EAST WAlKO ROAD· WAILUKU, MAUl, HAWAII 96793-9355· TELEPHONE (808) 244-9570· FACSIMILE (808) 242-7068

A Subsidiary of C. Brewer and Company, Limited

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· , ..... {',-.,.

COQISSION ON WATER RESOURCE MANAiMENT (10/99)

FROM:_~..:..;;~~",--_____ DATE: kO -)...:b:'Y1 TO:

_BAUER,G. _CHING,F. _ DANBARA, S. _ FUJII, N.

M 7 ., i "'$tO .. _HIGA,D. _HIRANO,E.

__ ,~R.

_JINNAI, R. _ KUNIMURA, I.

TO:

_LUM,A. _NAKAMA,L.

NAKANO,D . .2JJr hUIS,. _OHYE,M. _SAKODA,E. _SUBIA,S. _ SWANSON, S. _UYENO,D. _YODA,K

SUSPENSEDATE, ______________ __

_Approval _Signature

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_Type Draft _Type Final

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I

o o October 28, 1999

MEMO TO THE FILE

FROM: Neal FUjii~ SUBJECT: Wailuku Shaft 33 Pumping Status

On October 28, 1999, I spoke with Mr. Clayton Suzuki of Wailuku Ag. He concurred that Wailuku Shaft has been returned to Wailuku Ag. from Maui DWS. He stated that Wailuku Ag. is NOT using Wailuku Shaft and has no plans to do so in the future.

I also told him to expect a letter from our office requesting water use data from both surface and ground water. He was very cooperative and agreed to share what data they had. I thanked him and hung up.

CC()1ISSION ON WATER RESOURCE MANt )MENT (10/96) ....

FROM: ____ ~o\------ DATE: __ \~-+t_'1...L.-/_) ....... 1 __ SUSPENSE DATE _______ _

_BAUER, G. _CHING, F.

,,1-,....,- FUJII, N. ~LHARDY,R.

_HIGA,D. _HIRANO, E. -I-ICE, C. _IMATA,R. _JINNAI, R. _ KUNIMURA, I.

_LOUI, R. _NAKAMA, L. _NAKANO, D. ---<lHYE, M. _V_ S S.AKODA. E. _SUBIA. S. _ SWANSON. S. _UWAINE. J. _YODA.K.

__ Approval __ Signature

Information

PLEASE:

__ See Me Review & Comment

__ Take Action __ Type Draft __ Type Final

File __ Xerox __ copies

#

· ~' : '\., BENJAMIN J. CAYETANO

GOVERNOR OF HAWAII

o

STATE OF HAWAII 97 DEC 17 p 2 t' 2 II DEPARTMENT OF HEALTH ...

P.O. BOX 3378

Mr. David R. Craddick, Director Department of Water Supply County of Maui P. O. Box 1109 Wailuku, Hawaii 96793-7109

Dear Mr. Craddick:

LAWRENCE MilKE DIRECTOR DF HEALTH

In reply, please refer to: EMD/SDWB

SUBJECT: PERMANENT UTILIZATION OF SHAFT 33 AS A WATER SOURCE

We have reviewed your letter dated November 14, 1997 regarding the proposed usage of new well(s) which would be drilled vertically into the existing Shaft 33 well(s). Your letter also states that liThe State Water Commission staff is considering authorizing sealing only the area of the tunnel that is 50 feet vertically below the surface, the unused wells, and the annular space of the new well or wells. II We have contacted the State Water Commission and verified that the 50 feet vertical restriction is a minimum requirement to authorize the sealing of the tunnel. However, the Safe Drinking Water Branch recommends that the whole tunnel be sealed properly.

The proposed new sources of potable water must be approved by the Director of Health prior to its use. Such an approval is based primarily upon the submission of a satisfactory engineering report which addresses the requirements set in Section 11-20-29.

If you should have any questions, please contact the Safe Drinking Water Branch, Engineering Section, in Honolulu at 586-4258 or call toll free direct from Maui at 984-2400, ext. 64258.

Sincerely,

~L~N~.' CHIEF Safe Drinking Water Branc"h Environmental Management Division

QK:la

c: Gordon Muraoka, Maui Sanitarian ~/Rae M. Loui, Deputy Director

State Water Commission

.. CO( 'ISSION ON WATER RESOURCE MANJl()'nENT (10/96)

FROM: $:EeJ- DATE: ,,--,li111 ~~~----------- I I

SUSPENSEDATE..-______________ _

TO:

...; BAUER, G. _CHING,F. -:-f- FUJII, N. -lL.. HARDY, R. _HIGA,D. --+ HIRANO, E. _V_ICE, C. _IMATA,R. _JINNAI,R. _ KUNIMURA, I. __

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1LOUI, R. _NAKAMA, L. _NAKANO, D. _OHYE, M. _SAKODA, E. _SUBIA, S. _ SWANSON, S. _UWAINE, J. _YODA,K.

/ .,' . /} -r', / . ./ /*)L '

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__ Approval Signature Z Information

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DEC-04-97 II,SI FROM,HI DEPT OF HEALTH .. : ID,B0BSBS4370 PAGE

BOARD OF WATER SUPPLY COUNTY OF MAUl

P.O. BOX 1109 WAn..UI(U, MAUl. HAWAII 961'93-7109

"""\ ~:;''' ...... .

: ~ '.- ... ' .... _'

NOV 20 1327

Telephone (808) 243-7S16 • Fax (808) 243-7833

November 14. 1997

William Wong, P.E., Chief State of Hawaii

.. , 'Department 'of Health ' Safe Drinking Warer Branch Environmental Management Division P. O. Box 3378 Honolulu, Hawaii 96801

Dear Mr. Wong:

VIA FAX & MAIL

We need to know your concerns with. the permanent utilization of Shaft 33 as a water source.

Wailuku Shaft bas been in use as a temporary facility since 1991. We are looking at using one or two of the wells on a permanent basis- Wells would be drilled verticaUy into the existing wells and the tumlel shaft and pump room abandoned. Homes, roads, potable waste, and stonn water lines could intersect the vertical plane of the tunnel.

Commission staff is considering authorizing sealing only the area of the tuDnel that ly below the surfac:e, the unused wells, and the annular space of the new well or

W'eIk-l'b!~ w d leave a direct conduit fOI water traveling the 50 feet vertically to go directly to the pump room floor which is at 10 feet above the water table.

The enclosed drawing shows a plan and cross sectional view.

Sincerely,

4JJ~ David Craddick, Director DCljaw Enclosure copy: George Y Tengan

Engineering Seth Bakes Avery Chumbley RaeM. Loui

"By Warer All Things Find Life" .

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/ OEC-04-S7 11.51 FROM.HI DEPT OF 10.8085884370 PAGE 1/3

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DEPARTMENT OF HEALTH P.O. OOX 3378

HONOLULU. HAWAII 96801

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NO. OF PAGES (w/cover sheet): ..3

TO: Ed faKD cia. --------------------~~------------~-------

O~CE; ________ ~n~~~~~ __________________ __

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NOTE: If this transmittal was illegible or incomplete, please call the sender.

') co ~'rISSION ON WATER RESOURrrAN~ ~!MENT (10/96)

FROM: ___ F't--__ ' ___ DATE: I' /110 /)'1SUSPENSE DATE _______ _

TO: I;N,T. TO: INIT..EQft ' PLEASE:

_BAUER, G. _CHING, F. _FUJII, N. -L HARDY, R. -ft­_'_HIGA, D. _HIRANO, E. Z-ICE, C. _IMATA,R. _JINNAI, R. _ KUNIMURA, I.

_LOUI, R. _NAKAMA, L. _NAKANO, D. _OHYE, M. _SAKODA, E. _SUBIA, S. _ SWANSON, S. _UWAINE, J. _YODA,K.

--'j ./ l/v)

__ Approval __ Signature

Information

See Me Review & Comment Take Action

__ Type Draft __ Type Final k-File

Xerox __ copies

o o o o

BOARD OF WATER SUPPLY COUNTY OF MAUl

P.O. BOX 1109 WAILUKU. MAUl. HAWAII 96793-7109

Telephone (808) 243-7816 • Fax (808) 243-7833

November 14, 1997

WIlliam Wong, P .E., Chief State of Hawaii Department ofHea1th Safe Drinking Water Branch Environmental Management Division P. O. Box 3378 Honolulu, Hawaii 96801

Dear Mr. Wong:

VIA FAX & MAIL

We need to know your concerns with the permanent utilization ofSbaft 33 as a water source.

Wailuku Shaft has been in use as a temporary facility since 1991. We are looking at using one or two of the wells on a permanent basis. Wells would be drilled vertically into the existing wells and the tunnel shaft and pump room abandoned. Homes, roads, potable waste, and storm water lines could intersect ~e vertical plane of the tunnel.

The State Water Commission staff is considering authorizing sealing only the area of the tunnel that is SO feet vertically below the surface, the unused wells, and the annular space of the new well or wells. This would leave a direct conduit for water traveling the SO feet vertically to go directly to the pump room floor which is at 10 feet above the water table.

The enclosed drawing shows a plan and cross sectional view.

Sincerely,

~oJ~ David Cwidick, Director DC/jaw Enclosure copy: George Y. Tengan

Engineering Seth Bakes Avery Chumbley RaeM.Loui

"B:y Water AU Things Find U/e"

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Report of

C mmitte. in Charge of the

Experiment Station

• JIA AI~ SUGAR PLANTlIS' ASSOCIATION

r th. V ... r .... 1 ... Septa ..... r 30. 19411

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._ ;;;~"::'=IOI' lfl'rH mea.ured. wen .. TIle \Wilt, ftc­

dl'll~lCtllrn& ate the "en" Inrge! a IIKl\mtt CJt 380,000 to

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O&20,()(10 ,'1111011. IK't' c~· Iwr "IC,t 1If' 4rnwdm'"Il.

Kuhlwa w.11 Proves UntuccMsful

A wildcat W\!U bas b~ll 8"nk it_to tM llOO.foot-"_d l1Dr'Chad arttllan water lit Nahlku, Maul b.7 OI.m_,­DrUUuC (JowIJllny tor Es.t »aul lrriptlon ColUl'IAll)"" AIr"11ft 11~lmp­In« lall_ dClUlOllttl'llWcl A _llC!dfte (:a ... elt)f of only 12150 pUo ... per day IK!f :toot clra",lown, too ItI\\" to be ceouom~lll.

The "0011 WIU. (ldUoo frtUd Gn .1tl­tucle of lSOO teet to • total delltb ot 1. teet. It wa. c&IIIICl tor 818 teet, and tile erutlug wa __ led Itdo tJut

ul...- ronllnfq becI. W1wn -ua. wen WIIB 1"8 teet· deeD It wu teIted with an alr-Utt pUD)~ TIl. water ~00(1 at 11 iIe[1tIi of aboRt 200 fet·t (Ir All nltltndu IIf about It.f() teet. Witll a (l ... "llClWD of 2(1(1 tet't the wc'lI l·.l'lc\t>cl .. qUD.l··

tt'r ot n mlUlol:I 1m1l0l1l llE't clA7" The addltlonl ch p tho r the nllliu bnle wnll clrtul'(l clc!IUIt'mtc)l;v to IlCIrtotu.te the perehlng ""1 In order to lnert'aM, It ,/IlNIblP, the .1nawdowa 80 aa to "'It"'l nl~' 111 ... 1· ),Ie mud from tho lI"nlls CIt the \Woli.

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rt. &.10 ot the. oaat.~ • let. ...,. s.r.u.. ~Rltval Co. \0 c.., DrUlt~ Co., ullad for the of ,_ .ua lftII ........ at. .. bot*_ of • .-R".ll.tltllde of aoat t.t. to.upt:Q- MlR' .alAwl • .,.......u. .s.w.\eped ....... .....ter ~ tria a .... 1'- IaI.OIIIl to 'be epprod.a~ •• abaft, ..... 1ewl. 1aIlt at MptIa. ftII7 ... cbt1l.lecl1d.tIa _. I .. DOt ........ , 11M ..u., tat th. dtUT_ .8fth1 .............. 1iO 1JIdl-ddul "-P .'1,..... 'f ..... ..-an be --* 1D tile wlle til-.. Hl .... , ~ __ ....... b a lIole ___ .. 1t. 111 w be ..... iii lattJau. f_ .. U. .. aboa' 1 la.1 dI-.... aDCl .at. 10 .t.t...... I _'1..­___ .... DO .,.at.:t d1ttlnl '1 _ateM iD 'Uadr dr1 111D1, .. DO dltf1oal.t1es w.l.tIa 1DeM1U • ~ o.s.,. ad , 1dd.., at. _ u.., ... na t • ... "-wUI.

!be"..... ... _.t, lAt ........ 8qar Co. fie CuIv lJrSUS. 0.. aalW fer .. ..u. w be 4IrillItd • ..c_ a' .... D. 250 aII4 300 feet., ~ " , .. _ ~ •• lMd •. 0De .. to ........ Jt ,_ ., ... It_ of • .-n. u. .....waou.. of 1IId.0Ia .. JIll '" ~ s..o. ..... , lIeUewcl '" _ ...... ,.,,,.d wa •• 1ra'..,.. lIT it. pl .... t4 \0 Ita .... eoaftaI4 .... of" .n tIII8cIr1W a' Peaala ( ........ Co.'.' .... " ........ iIa • .san ...... w .. , at. hMla, _d _. p~ ..... "-Il' • • 1.' hIr cILIftaltUe iIltll:'" lit' *"1' ........ * -...... '..-.-....... aD alrltR ,... - .e ftt7 ...u J1eld Wi_ . "'IWI' tr .... -, " or 100 ,.., aoan.a.4. 1 "" • .. ...... ....... at .... .... r • . fa. *,U'" .ad _ •• "-" ... aidae .t u. We tIID tIM __ kftl d JdP ~ .... &1 ..... OJala.. • ..... '. l' ...... ~~ ... .-. of tilt 1111.- tile ,. __ ..... , _ ." .... "-...... water to •• , ,.atted ....... 1en1 M.... It; .a.w ....... tMt tId.a ... b1e wltll ~ .. 4r.l~ • at •• , 4 twa .. tao" tbat. ~ ......... ~ "'-W. MlAnr the petlaiq ...... .... ...... till_ Use Mid S .... de. uat ~, ........... .-...za H1.w th. __ •

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BENJAMIN J. CAYETANO GOVERNOR OF HAWAII

c Q

STATE OF HAWAII OEPARTMENT OF LANO AND NATURAL RESOURCES

COMMISSION ON WATER RESOURCE MANAGEMENT P. o. BOX 621

Mr. David Craddick, Director Department of Water Supply County of Maui 200 S. High Street Wailuku, Hawaii 96793

Dear Mr. Craddick:

HONOlUlU, HAWAII 96B09

AUG 26 1997

Abandoning Wailuku Shaft 5S!>O-o5

MICHAEL D. WIlSON ~

ROBERT G. GIFW..:> DAVID A. NOBRIGo\

LAWRENCE H. MI~ RICHARD H. COX

HERBERT M. RICHAFI!l5.. .R

RAE M. lOUI. P.E DEPVTY

We received your August 5, 1997 request for clarification on rules for abandonment of Wailuku Shaft. We understand you nonetheless expect to continue use of the wells accessed by the shaft.

The Well Standards for abandoning are intended to prevent contamination of ground water from surface sources, and the method addresses the usual situation of a cased well shaft. The Standards specify backfilling the shaft with cement for a complete seal.

It is not clear to us exactly how the Wailuku Shaft situation may differ. Please submit'a recommendation explaining how to seal the Shaft while still maintaining function of the wells.

If you have any questions, please call Charley Ice at 587-0251 or toll-free at 984-2400 (Maui), extension 70251.

CI:ss

Sincerely,

RAE M. LOUI Deputy Director

o o

BOARD OF WATER SUPPLY 97 AUG 7 An: 44 COUNTY OF MAUl

P.O. BOX 1109 WAILUKU, MAUl, HAWAII 96793-7109 em, nSSlfi'i r\~J \\j,~TrR

Telephone (808) 243-7816 • Fax (808) 243-783~ESC ;~C[ .. ,l;'.i;.GEHENT

August 5, 1997

Honorable Rae M. Loui, Deputy Director State of Hawaii Department of Land & Natural Resources Commission on Water Resource Management P. O. Box 621 Honolulu, Hawaii 96809

Dear Ms. Loui:

We would like to know Commission rules for abandonment of Wailuku Shaft as an entrance to the Wailuku Shaft wells. The wells would be used in the continued supply of potable water after the shaft is abandoned.

Your early response in this matter is appreciated.

Sincerely,

~Jl--.WU David Craddick, Director DC/jaw c: George Y. Tengan

Eric Okazaki Engineering

"By Water All Things Find Life" Printed on recycled paper @

() , '

DECLARANT/SOURCE FILE/CROSS REFERENCES

DECLARANT...Eti& ~ .'

SOURCE FILE

w~ apt., 0-011 mcuu: puJs) t:J.t:1~1.~ ~ 53.3D -() 6

SEE OTHER DECLARATIONS FOR SAME SOURCE/SAME PARCEL:

o o May 1,1996

MEMORANDUM FOR THE RECORD

FROM: GlennBaue~

SUBJECT: Resistivity Logging at Waiehu Monitor Well and Shaft 33 ;;",,::0 - ,:,5

On April 30, 1996 Mitch Ohye and I ran the fluid resistivity logging tool down Waiehu Monitor well located within the lao Aquifer System. Normally the thief sampler collects water samples at prescribed depths on a quarterly basis, but because the sampler is under repair, the opportunity arose to use the fluid resistivity tool to create a detailed profile of the lens. Although the instrument provides a continuous measure of salinity (fluid resistivity as ohm­meters) with depth, we recorded resistivity every five feet from elevation 0 to elevation -1000 feet ms!.

The attached graph shows the results of the resistivity log as well as the chloride samples collected by the USGS in January 1996. As can be seen from the graph, fluid resistivity is sensitive in the fresh water portion of the lens and is much less sensitive in salt water. The major break shown in the chloride concentrations at -400 feet msl and at -625± feet msl are clearly shown. The location of1ens' mid-point is not clear from the fluid resistivity, but is found (for January 1996) by interpolating for 9,500 mg/l between the sampling depths (-675 and -750 feet msl) using the chloride data.

I believe that the use of the resistivity tool, in conjunction with sampling, will provide a better way to monitor the lao Aquifer System at the Waiehu Monitor well. Fluid resistivity should be done twice a year--perhaps during the winter and during the summer when the demand for water is much greater.

Mitch and I also arranged with Eric Okazaki ofMaui DWS to visit Shaft 33. We also checked the USGS water level measuring transducer install in the pump room. Of the three 800 HP motors in the pump room, only one is on at 3,700 gpm. Apparently the pump runs 24 hours, but is shut down every two months for maintenance. The transducer should record the recovery.

Within the incline portion of the shaft, the contact between a boulder conglomerate and the underlying Wailuku Basalt was observed. The contact is about 375 feet from the shaft's portal on a 30° incline. Horizontal distance from the portal is to the projection of the contact on the land surface is 325± feet. Depth to the contact in the incline shaft is about 187 feet.

o

o

Waiehu Monitor Well, lao Aquifer Elevation vs Fluid Resistivity 4/30/96

o~--------------------------------------------------------------------~--~

-100

-200

-300

--Cii E -400 ~

~ C -500 o .. CO > -600 Q)

W

-700

-800

-900

Chloride concentrations are from ~ ~ _ ~ ~ ~ ~ ~ ~ ~ ~ _ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ _samples collected by the USGS in

January 1996

100 mg/l

12 mg/l

~ ~ ~ ~~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~ ~ ~ ~ ~ ~ ~ ~ ~--~ ~-~ ~ ...... ~ ~ ....... ~ ~ ........ ~ ~-~ ~-~ ~-~ --~~-~~-~~-~ ~-~~-~ ~-~~-~ ~~~ ~~~ ~~~ ~~~ ~~~~~ 95 mg/l

640 mg/l 110 mg/l

------- -------------------------- -----------------------------------------------------

Interpolated lens mid-point in ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ -January 1996 is -728 ft. msl

_________ 13,000 mg/l

17,000 mg/l

19,000 mg/l

-1000~--------~------_T--------~--------+_------~--------~--------+_------~

o 10 20 30 40 Resistivity (ohm-meters)

r • .t o FlIt/;",..n, ilt,... ";"i~I"" ~nll I",,!fl, '.;'1'1 (~,

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a: w

~ 0 9

; . 8 29

"" 2 3 4 5 6 7 8 9 10

:WA~R LEVeL AT WAiLUKLi sHAFh- 33, MAUl! HAWAII f . l ~ ~ . :

11 12 13 14 15 16 17 18 19 20 March

1996

21

. Assumed reference point altftude 30.04 It; Assumed resistor value of 130.8 ohms

22 23 24 25

ihPu'NATION

-L-: conected for d~ ---- ,,,,,,,_oid '" "'"

26 27 28 29 30 31 2 April

. - o

USOS~ 1131 (ut&8) 1~0 WATFR LEVFLS AND ARTlISUN PRPSSURB, 1948, SOtr.'HWESTERN STATES

Test borin Haui TI02--Continued. Date Water level Chloride Date Water level Chloride

A B A B Jan. 14 27.3 426.6 19 Jul)" 16 25.0 428.9 19 Feb. 18 26.8 427.1 18 Aug. 1;5 22,6 ~1.3 20 Mar. 18 26.5 427.4 18 Sept.15 23.0 430.9 21 Apr. 16 26.1 427.8 21 Oot. 15 19.0 434·9 21 May 14 25.7 428.2 20 Nov. 16 23.5 434.4 25 June 15 24.6 429.3 19 Deo. 15 24.2 429.7 22

Test boring Maui TI10 (puu Hele). Wailuku Sugar Co· 2 miles north of Maalaea. Measurements for Ja~uar)" through Ootober adjusteq to correot for stretoh in measuring line. Records available: 1940-4A. Jan. 14 6.9 305.8 261 Ju1,. 16 6.0 306.7 253 Feb. 1~ 7.3 305.4 253 Aug. 13 6.0 306.7 255 liar· 18 7.2 M5.5 268 Sept .15 6.1 306.6 255 Apr. 16 7.2 305.5 297 Oct. 15 6.7 :506.0 249 Ma)" 14 7.0 305.7 257 Nov. lEl 6.6 306.1 251 June 15 6.3 306.4 253 Dec. 15 6.6 306.1 249

Test boring Maui Tl12. Wailuku S~r Co. 0.5 aile aouthweat of Wailuku. Measurements for Januar)" through September adjuated to correct for stretch in measurlng line. Measurements tor October, November, and December from auto~tic water-.tage recorder. Recorda aval1able: 1944-48. Jan. 14 27.4 429.7 14 July 16 25.2 431.9 14 Peb. 18 27.0 430.1 15 Aug. 13 22.0 435.1 11 Mar. 18 26.7 430.4 15 Sept.15 22.8 434.3 13 Apr.).6 26.3. 430.8 16 Oct. 15 19.6 437.5 Ma.,. 14 25.7 431.4 13 Nov. 16 21.9 435.2 June 15 24.0 433.1 12 .Dec •. 15 22.5 434.6

Test boring Haui Tl13. walllli<u Sugar Co. At Wallulcu 1'1111. fteC01'<iS avallable: 1944-48. Jan. 14 17.97 163.12 101 Jul)" 16 17.38 163.71 114 Feb. 18 17.78 163.31 99 Aug. 13 17.14 163.95 106 !'Iar. 18 17.70 163.39 102 Sept.15 16.83 164.26 106 Apr. 16 17.71 163.38 100 Oct. 15 16.64 164.45 107 !'Ial' 14 17.60 1:63.49 102 Nov. 16 18.14 162.95 109 June 15 17.37 163.72 106 Dec· 15 18.28 162.81 110

Shatt 33. Walluku Sugar Co. 0.5 mile s.outhweet .ot wallulcu. l'Ieasure-ment"i··'Uscontlnued. Records availalol.": .. l94~::\:i;. ' '. f; "

ISLAND OF MOLOKA I

Total ground-water pumpage on Molokai for 1948 was 46 million gallons,

or 2g million gallons greater than in 1947.

Water level" in teet, in observation wells in "olokal

~"", 'f ~10 well. Halt a mile northeaat of ~10 wharf. Records avail-able: 1938-1948. Feb. 7 a3.85 39.38 !'Ia)" 14 a3.70 3g.M

8 4.75 38.48 30 4.45 38.78 11 4.80 38.43 JUll' 19 a3.36 39.87

!'Iar. 16 4.55 38.68 Aug. 26 4.16 39.07 67 a Pumping.

Ualapue well. 2.75 ailes east of ~10 ",ell. Recorda available: 1938-48. Feb. 7 5.31 38.40 !'Ia)" 30 4.99 38.72

II 5.27 38.44 July 19 5.01 38.70 !'Iar. 16 5.01 38.70 Aug. 26 4.73 38.98 51 !'Ial' 14 a4.80

------------"--~.

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1. 'l'be exact distances bet __ each ot tb.e'·~t~_ wlla. , 2. The dev1at.1cm t.rom wrt1cal. in each ot the vella, and ita dil'ectlot.,

as .u. &s known. 3. Tb. apPI'Ox1mate u1IIluth ot the liDi throuah the th". we1la. 4. The appraxiute d18t8ZlCe and astauth fraa the northeutero .et ot

the welle to the '1eld '3 teat hole. There 11 no t.te between the vella and the ahaft euM'q, and the tle betweea the sbatt and neld '3 1. bT st,ad1a, but I should think the 41st.a.nce could. be eata'bl.1l1hed ta1rl,y ... 117 within a 5-toot error.

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: ' i ~ l. .~ir~ .... ,;" !'~1 ..• i~'c;; i,\ i,~> 'iiiiMi,~1 . ;f · .~ ., ."", · 'II!; .' "t!i"'i: '1"i'.'i,IIL~iiPJ'i."",,..r 1 r ~ .~. . ... ,~ ""!?!'/w .• ,~':.""';~<:: ". .tt;··rt;':i·" ··/;'2;,,:/-,;,,·~S:,;j.\:'ar':':~<'···;; '. 7 i

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.,~-

~. ADD.I .. : HBR&WU"

,(l'M't :eo .~t!~ \;rr .. ;~~ • ..A. .. l.':ft~1.

.. ·M ••• Mlt.

th4;") ·EU.l ..;~ .. (;ti fh Sl ~ 4 :) ~l L&fri.a N'"'6. 1t

10 :1f) '''i Rihi.t& It

3 : 00 X'.J.:J."l '1.00 .1 '7 '"

411.90 n.

i , l 1, '. , I' I'

/

/

• , o -e-.

Iqt7 t~, Dec. U

1'1 ~ 63 Mea !2 " Mflu I /- //2. _ ,", tLL,~", :8hiepRt; t':)'I'!L;,:;, , ....

, .. • ;", ". O:.;t •

,~ ... '" .' ". "';;.

WBCWseo 00 J Mr. D..A. Davi.

" , p!!o '", 12 Dec. 13

8130 am 480 •. 68 tt. 01:50 •• " ~,~.ag .. 85, .i'

10 i30. ., ",,9'1 • . U:'I80~ :t'., :4I5ct~Ol •

1.80 pm 430.40 • ai30 • 430.55 • 8180 • 430.68 • 4.00 • 430.56 •

1 •. W, 1 .. :~!) ~~ w-l:,<

, .'. ,.~J.' > ••••

8&45 am 4P .. 60 tt., 0.45 • ".,98 •

10146 • 430.10 • 8:00 pm 430.1'1 "

.... ···.f, .l .... .,..; .

....... ""'.'"

/

0.6t 9 ... 9.00 4.8t 0.00 4.8t

o o Wailuku Sugar Co. Shaft

Disoharge Measurements ~""~ s..~".(t 33 +

Disoharge measured by Parshall flume at Shaft entrance.

Time Gage Height Disoharge Pumps Remarks MGD Running

12-9-47

2.50 P 0.72 3.11 No. 1 Salt. 1.25 gpg 2151 0.72 3.11 • 2.52 0.74 3.24 " 2.53 0.78 3.58 " 2154 0.80 3.66 " 2~55 0.78 3.52 .. 3&01 0.80 3.66 • 3105 0.78 3.52 " 3&08 0.80 3.66 It

3&20 0.80 3.66 .. 3.25 0.84 3.95 tt

3126 0.94 4.70 " 3e30 0.96 4.85 " Salt. 1.10 gpg 3135 0.95 4.78 ". 3140 0.96 4.85 tt,

3t45 0.96 4.86 " 3155 Salte 1.15 gpg

12-10-47

9.45 A 0.90 4.39 No. 1 9.55 0.90 4.39 ~ 10.00 0.92 4.54 " 10&03 0.94 4.70 " 10105 0.96 4.85 tt

10142 0 .. 94 4.70 No. 2 10:45 0.96 4.85 No. 1 10,55 1.10 5.99 " 10,:67 0.84 3~95 " 11:00 0.82 3.80 • 111:03 1.00 5.17 .. llt05 0.88 4.24 .. 11:07 0.82 3.95 " 11110 0.88 4.24 n

11115 0.90 4.39 tt

11126 0.88 4.24 tt

11140 0.89 4.32 .. 11143 1.15 6.42 " 11144 0.99 5.09 ttl

ll26 P 0.96 4.85 No. 2

.~

Time

lt21 1121 lt35 1140 lt45 1141 11'52 1:55 2100

12-11-41

9&:15 A

9145

o 0

Gage Height Disoharge ldGD

1.18 6.68 0.90 4.39 0.88 9.24 0.89 4.32 1.42 8.91 1.43 9.00 0.86 4.09 0.88 4.24 0.88 4.24

0.91 4.93

1.50 9.69

M~u; S"~tt ~3

Pumps Remarks Running

No. 2

" " II!

No. 1&2

" No. 1 " "

No.1 Temp ot Water at 9100

No. 1&2 Temp ot Water • 12°

Note I Temperature ot water measured at disoharge otwater trom pipe into oononrete lined tlume with Tyo08 0-220· F. thermometer wi th2° gra­dations.

- 13·' F.

o

WATER RESOURCES DIVISION

ISIAND MA.UI

UNITED STATES O ·~

DEPARTMENT OF THE INTERIOR

GEOLOGICAL SURVEY

,

8epod .... 110. ___ _

GROUND WATER BRANCH

8TATE_~HA~~~I~I~ __ _

Records furnished by Wailuku S~~ Co. (Al ti tude of temporary M.P.V: \.?~'e·!:':-e~ 1~.r~l~~~pJ:JA ~~~hamber floor, is 29.45 ft., Jl9 aa N bel au J Rnd-mzrface datum) .

Shaft 33. Wailuku Sugar Co. 0.5 mile southwest of Wailuku, in field 63 at Wailuku Sugar Co. Latiltude 20053'07", longitude 1560 30'47". Still \Ulder construction. Reached water in May 1946. Shaft inclined at approximately )00. Altitude of land surface at shaft collar 400 feet. This shaft is at the same locality of Test boring Maui T-l12, and it is plaimed 1iha1i water level measurements in the shaft will replace those in the test bo~ __ 1eftl 2].'1'1 Od· Jr;;, 11-iL;~ 2.5.2;" Nov. 11,11-,'1:...:1'::...-_

..... ndable '9' ~ 47 .... ..... it! ft .. 'ho~ mal • I .. • • !We ......... !We •• .., .... 1 Dde W •• r 1eftl Date • ....... 1

1946 Measuremen IJ di scontin ed 1948. -J\Ule 19 26.45

Aug. 30 26.45

Nov. 19 25.91

Dec. 18 26.45

1947

Jan. 17 26.45

Feb. 14 26.45

Mar. 14 26.18

Apr. 18 26.10

May 16 26.05

June 17 26.26

July 15 26.20

Aug. .L3 27.24

Sept. 12 27.62

Oct. 16 27.99

Nov. .L4 27.80

Dec. 16 26.89 ,PO un II

;/

, ~' . ,

.- "' ~, '

0)

Wailuku Sugar Co. Shatt

Well No. 1

~ater levels measured with airline and Bourdon gage. Drawdown calculated using 29.9 psi or 69.1 as lenght of column of water in

airline at statio level.

Time

12-8-4'1

2118 P 3103 3&20

3l47r30 3&49

3&:50

3.51 3&511:30 3t52 3,53 3154 31"54.15

3~54t30 31:56 4t29

12-9-47

8.30 A 10.14 10.14.30

1.18130 P

Gage Beading pai

30.1 30.0

29-'5 29.6

29.5

29.6 29.25 29.25 29~25 29.25

29.75 29.9 30.0

29.9 29.9 29.9

Feet of water Drawdown in airline

68.1 :1~0

68.1 1.0

68.1 1.0

68.1 1.0 67.7 1.4 67.7 1.4 67.7 1.4 67.7 1.4-

68.6 0.5 69.1 69.3

Remarks

Started puinp No. 2 with valve cracked -open. Blew tuse.

Started pump No.2 with valve iturn open.

Opening valve slowly.

Valve open 10 turns out of 26.

Pump stopped. Frolen.

PUmp No. 1 started but low rotation, loW voltage. low amperage. wrong taps. Shut pump down.

Pump No. 1 started. valve closed.

/ ~

0 0 ~.:

Time - Gage Reading Feet of water Drawdown Remarks ,\ '

pai in airline )"y\c:).\,4.\ iht\{-t ~~

1 1 •. 19 PuDap,Bo. 1 stopped. 1&;20 29.9 69.1 2 &:34 29.9 69.1 2147.30 29.9 69.1 2'148 ~ Bo., l"~rted momentarilY'.

2.48.30 Pump No. 1 started • . Valve open Ii turns. .

2149.15 Valve opened to 4 tUl"D8.

2&49.30 26.3 60.7 8.4 2a:50150 26.8 61.9 7.2 2:t52 &00 26.8 61.9 1.2 21:64,00 26.2 60.5 8.6 2155.:30 26.2 60.5 8.6 2.58lOO 26.4 61.0 8.1 2t59.00 26.6 61.4 7~7 Valve opened one more turn. 3 •. 03 26.2 60.5 8.6 3.05 26.3 60.7 8.4 3&OG 26.2 60.5 8.6 3.12 26.6 61.2 7.9 3t22 26.6 61.4 7.7 3&.26 26.0 60.1 9.0 3 • .27,30 25.3 68.4 10.7 3.28lOO 25.2 58~2 10.9 3129.00 25.2 58.2 10.9 3129.00 25.4 58.1 10d 3130tOO 25.3 68.4 10.7 3&31100 25.2 68.2 10.9 3t31130 26.2 58.2 10.9 31:32.00 26~3 58.4 10.7 3.33100 25.4 58.7 10.4 3&:37&00 26.6 58~9 10.2 3.40.00 25.6 69~1 10~O 3.43.00 26.8 59.6 9.5 3t46aOO 25.9 59.8 9.3 3a.5hOO Pump No.1 shut down. 3151.30 29.9 69.1

12-10-47

8dS A 29.9 69.1 9125 Tried pump No.2 with valve

olosed. Pump too tight. 9a30 29.9 69.1 9a37 . Tried pump No. 2 about 1

min. with valve olosed.

/ 0) ~ / .

?

/ Time Ge.ge Reading Feet ot Water Drawdown Remarks psi in airline rn «'-\ i ~"4~i" ~.~

9t44 29.9 69.1 Tried pump No. 2 with valve ,.

olosed. " e,;:'~ :' ',"".

9 i:46 &30 Started pump No.2. Valve open i turn.

9,4'h30 29.p 68.1 1.0' 9t48t30 29.5 68.1 1.0 Valve on pump No. 2 open.

5 turn •• 9t50130 29.5 68.1 1.0 9t62 29.5 68.1 1.0 9ri)5 29.5 68.1 1.0 Di8o~rge, 4.4 mgd. 10,00 29.5 68.1 1.0 10rOh30 ~~.:: ,F} Valve on pump No.2 open

wide. 4.54 mgt. lOtOS 29.6 68.1 1.0 10.07· W.L. in sump .. 27.42 t • 10110 29.5 68.1 1.0 10112.30 Pump No. 2 stopped. 10,12.45 29.9 69.1 ' ,", ~""

10.30 29.9 69.1 10.40,50 Started pump No. 1. Valve

wide open. 10.41~30 26.5 61.2 7.9 10"42 26.2 60.5 8.6 10.43 26.2 60.5 8.6 10t45 26.2 60.5 8.6 10.55 26.2 60.5 8.6 lIt 10 26.2 60.5 8.6 11 .. 15 Temperature ot water at

disoharge at tunnel entrance • 73- F.

11t20 26.2 60.5 8.6 • 11125 26.2 60.5 8.6 11~35 26.2 60.5 8.6 1l,46,!O Pump No. 1 turned off. 11.45,45 30.0 69.3 11.46,00 29.9 69.1 11146.30 29.9 69.1 11&52 . 29.9 69.1 12.15 P 29 .9 69.1 1124 29.9 69.1 la26c:OO Start pump No.2. 1.26115 29.5 68.1 1.0 1127 Opening valve. 1.27.30 29.5 68.1 1.0 1128100 29 .5 68.1 1.0 1.30 29.5 68.1 1.0 la31 29.5 68.1 1.0 1.35 29.5 68.1 1.0 1.41.30 start pump No.1.

"3-

/ ~ ~~

0, , '

, / Time Gage Reading Feet ot Water Drawdcnm Remarks

(- psi in .Airline 'h~~t !>~ m~~\··

lc:42.QO 27.0 62.4 6.7 Pumps No. 1 and No.2 in operation.

1,42110 26.5 61.2 7.9 1t42J30 26.1 60.3 8.8 It42r45 26.0 60.1 9.0 la43~ 26.9 59~8 . 9.3 1,43t16 25.8 69.6 9.5 1,43&30 25.7 59.3 9.8 11:431:45 25.6 69.1 10.0 1K4100 25.6 69.1 . 10.0 1,44~30 25.6 59.1 lO.o 1t45tOO 25.5 58.9 lO4I2 1.45130 26.5 58.9 10.2 1.46&00 25.5 58.9 10.2 1,46=30 25.5 68.9 1002 It47a.OO 26.5 58.9 10.2 1 =49 tOo 26.5 58.9 10.2' -1.49.15 'Pump No.2 stopped.

(Circuit breaker') 1=49.:30 26.4 61.0 8.1 1.60115 26.4 61.0 8.1 Pump No. 1 in operation. la50.30 26.4 61.0 8 .• 1 1.61.00 26.4 61.0 8.1 1.51&30 26.4 61.0 8.1 1c 62a 30 26.4 61.0 8.1 1a64 26.4 61.0 8.1 It66 26.3 60~7 8.4 la58 26.2 60.6 8.6 2,00 26.2 60.6 8.6 2.104 26.2 60.6 8.6 2t06 26.2 60.5 8.6 21051:30 Pump No. 1 ahut down. 2106130 27.5 68.5 0.6 2106146 29.9 69.1 2.07.00 29.9 69.1 2109 29.9 69.1 2142 29.9 69.1

12-1l~7

10c10 .A. 25.5 68.9 10.2 Pumps No.1 and 2 operating.

'~ J .. ' , o

Wailuku Sugar Co. Shatt Well No.2

o

water levels measured with airline and Bourdon gage. Drawdown calculated using 30.2 psi or 69.8 tt. as length ot water column

in air line at static water level.

Time Gage Reading Feet ot water Drawdown Remarks psi in Airlines

12-8-47

2116 P 30.2 69.8 3t08 30.1 69.6 3111 30.2 69.8 3121130 30.2 69.8 Start pump No.2 with valve

oraoked open. Fuse blew. It:22 30.6 70.6 3~22l40 30.6 70.6 31:32 30.2 69.8 St4:6 30.2 69.8 314:6t30 Start pump No. 2. Valve

open t turn. 314:7 26.5 61.2 8.6 3.47t60 26.2 60.5 9.3 3148.10 26.0 60.1 9.7 3.44I"SO 25.8 69.6 10.2 Valve opened 10 turns out ot

26. 3.50 .;: .. :: 15.9 59.8 10.0 3.51 26.2 60.5 9.3 31:511:50 26.0 60.1 9.1 3t52.l5 26.0 60.1 9.1 3152146 26.5 61.2 8.6 SI 53 26.7 61.6 8.2 3t64.15 Pump No.2 stopped. 3t54130 30.0 69.3 0.5 3154&45 30.1 69.5 0.3 3t65116 30.2 69.8 4.27 30.2 69.8

12-9-47

8132 A- 30.1 69.5 10t14t30 30.1 69.5 Tried to start Pump No.1,

low rotation, low voltage, low amperage. Wrong taps. Shut ott pump.

10115 30.2 69.8 !t15 P 30.2 69.8 lal8t30 Start pump No.1.

I t"

~ ,10 !, "

TilJl3 Gage Reading Feet of water Drawdown Remarks psi in Airline h, 0.",,( ~~".f1' ~3

1:.19,00 Stopped pump No.1. Pump stuck. Working on pump No.1. Raising and lowering im,pellers.

2t48 Start pump No. 1 momentarilyo

2,48130 Start lump No. 1. Valve open 1 turns.

2'1:49t15 Opening valve to 4 turns. 2.',:49145 30.0 69.3 005 2161.30 29.9 69.1 0.7 2152t3O 30.0 69.3 0.6 2;,54 29.8 68.8 100

' ~'"

21:55 29.8 68.8 1.0 21:68 29 .• 9 69.1 0.7 3101 29.9 69.1 0.7 3t.-()4 , 29.9 69.1 0.7 31'06 29.9 69.1 0.7 3a1l!. 29.9 69.0 0.7 3&:15 29.9 69.1 0.7 3120 29.9 69.1 0.7 3't25 29 .9 69.1 0.7 3,26 Opening valve. 31,26 • .30 29.9 69.1 0.7 3128130 29.8 68.8 1.0 31:31 29.8 68.8 1.0 Valve wide open. 4.7 mgd. 3.35 29.8 68.8 1.0 31:40 29.8 68.8 1.0 31-45 29.8 68.8 1.0 4.78 mgd. 3'150 29.9 69.1 0.7 3r61 Shut down pump No. 1. 3~51130 30.0 69.3 0.5 31:63 30.1 69.5

12-10-47

8&20 A 30.2 69.8 9126 30.2 69.8 9t26 Tried Pump No.2 with valve

closed. Too tight.

9t44 30.2 69.8 Tried pump No.2. O.K. Started pump No.2. valve i turn.

Opened

9147 .. 25 27.5 63.5 6.3 9147&50 27.4 63.3 6.5 9,48.00 27.3 63.0 6.8 9&:60100 27.0 62.4 7.4

-2-

Time

9t52 9.54:30 9a66 9158a30 9l59r30 10 rOO 10 .. 011:30 10.02 10 .. 03 10 .. 03t30 10.06 10&10 10t12r30 10.19

10.32 10a:42

10142.30 10.43130 10 1'45 r30 10t47 10&:50 10.55 11.00 11110 11t15

111;25 11t35 llr45r30 lll48 12115 P 11'23 1.26.15

1.26122 1127.25 1.28100 11:30.00 1132:00 1136.00 1.27,00 1,40.45

Lt41115

Gage Reading psi

27 .1 27.2 27.5 27.3 27.0 27.1 27.1 27.0 29 .6 26.9 2'.9 28.9

150~

30.1

29.9 29.8 29.8 29.8 29~ 29.8 29.8 29.8

29.8 29.8

30.1 30.1 30.2

28.0 27.0 27.0 27.0 26.9 26.9 27.0

26.5

Feet of water in Airline

62.6 62.8 63.5 63.0 62.4 62.6 62.6 62.4 62.1 62.1 62.1 62.1

69.8

69.5

69.1 68.8 68<~8

68.8 68.8 68.8 68.8 68.8

68.8 68.8

69.6 69.5 69.8

64.6 62.4 62.4 62.4 62.1 62.1 62.4

61.2

Drawdown

7.2 7.0 6.5 6.8 7.2/ 7.2 7.2 7.4 7.7 7.7 7.7 7.7

0.7 1.0 1.0 1.0 ,1.0 1.0 1.0 1.0

1.0 1.0

5.2 7.4 7.4 7.4 7.7 7.7 7.4

8.6

- Remarks

Opened valve 2 turns.

Valve opened tull.

Approx. Pump stopped. 'Water level returned to 30.2 in about 10 seo.

Start pump No.1. Valve wide open.

4.85 mgd.

Temp. of water at disoharge at shaft entranoe • 73° F.

Pump No. 1 turned oft.

started pump No. 2 and opened valve.

Started pump No.1.

Pumps land 2 running.

-,----------

/' ~'l

-0 .~ ~:

'Y'h d.1A\ S~i1\+t 3) Time Gage Reading Feet of Water Drawdown Reiiia:r~B

psi in Airline

1.41,.46 26.3 60.7 9.1 1&:44.00 26.2 60.5 9.3 1r46,oo 26'.2 60.6 9.3 1&:41&:00 . ,26.2 60.5 9.3 .' f·

1I48t30' Pump No. 2 stopped. 1149.00 29.0 61.0 2.8 1.50.30 29.0 61.0 2.8 It51.30 29.9 69.1 0.1 11:64&00 29.8 68.8 1.0 1.66100 29.1 68'.6 1.2 2.00100 29.8 68.8 1.0 2.04100 29.8 68.8 1.0 2.06.20 Shut down pump No. 1. 2109 30.2 69.8 1.0 3.42 30.1 69.5

12-11-41

10.11 A 26.2 60.5 9.3 Pumps No. 1 and No.2 rwming

0--- o} Wailuku SU,gar Co.

Well No. 3 m «1M' ~ ~ It'" ;. ~.!i

Water levels, measured with airline and B.ourdon gage graduated in feet of water.

Feet ot water in airline calculated by subtraoting gage reading fram 200' which is scale reading on gage equivalent to zero pressure.

Drawdown calculated by subtracting feet of water in airline from 70 feet, the length of column of water in airline at statio water level.

Time

12-8-47

2.49 P

12-9-47

8:35 A 2157 P 21:59 3:02 3105 3106 31'15 3:20 3.25 3&27 3.31 3:35 3.40 3145 3.50 3151 3.52

12-+0-47

8121 A 9.33 9145 9.46.30 9.49 9152.30 9:56 10.00 10.04 10.10 10:12'30 10114 10a34 10.42

Gage Reading psi

130

130 131 131 131 131 131 131 131 131 131 131 131 131 131 131

130

130 130 130

131 131 131 131 131 131

130 130

Feet of Water Drawdown Pumps Remarks in Airline Running

70

70 69 1 No. 1 Pump started a~ 2.48130. 69. 1 It

69 1 It

69 1 .. 69 1 .. 69 1 It

69 1 .. 69 1 It

69 1 .. 69 1 .. 69 1 .. 69 1 .. 69 1 .. 69 1 ..

Pump No. 1 shut down. 70

70 70 70

start pump No.2 69 1 No. 2 69 1 .. 69 1 .. 69 1 .. 69 1 .. 69 1 It

Pump No. 2 stopped. 79 70

Start Pump No.1.

Wailuku Sugar Co. Shaft

Altitude ot Water Level in Sump

Time Water Level Alt., Feet

12-S-47

2,34 P

12-9-47

8.30 A 10,13 1,15 P 3.ro

12-1~7

8,25 A 10107 Uh38 11.:25 1124 P

12-11-47

1021a A

27.45

27.45 27.45 27.45 27044

27.43 27.42 27.44 27.41 27.40

27.35

\r t. ',I

aD I" lO76 (UW) ~96 WATER LEVELS AND ARTESIAN PRESSURE, 19'6, SOU'l'HWEST'ERN STATES

Shari 3~._ Wailuku ~~~ 0.5 ml1e aouthweat ot Wal1uku. ' ln tleld ~ .t ':/.1 ukil SU,ar Co. tl,t.YM .. 2005:1 ''7. B., 1 pn,1tude 112§~q' ''7. w. SUll under oons~ructlon. 1\eached water in II. 19406. Shatt 1ncllh6Cr at approxlmate17 SO. Altltude or land surtace .{ Bhatt collar .00.00 teet. Thi' shart is at the same locallty at Test bor1n& Ilaul Tll2 ana lt ls planned that water level ~easurement. ln the Shart wl11 repiace those in the test boring. (Altltude or temporary .... urlng polnt, at the level or.· the propo.ed ~mp-ohamber tloor. l~ 29.'5 teet, S'70.55 teet below land­lIurrllce data.)

Dat. Water level Oat. Water level

A D It)

. I,IILAND OF IIQLOKA I

The Ualapue and Kamalo wells showed net los.e. at 0.33 and 0.17 toot.

Records atter Mar 15 are not aval1able tor te.t bor1ng Tl.

Total pumpage for the year on Molbka1 decreased 0.64 milllon gallon.,

becau •• or decreased pumpage rrom the Kamakana well at Kawela.

A dr11+ed well at an alt1tude of BBBi feet at Kualapuu, on the western

.lope ot $a,t Molokai,enoountered water stand1ng 10 teet above sea level,

with a ~hlaride eontent ot 374 parts per million. The h1gh sa11nity

prQbably relult. trom a very low rate of recharge 1n thls ar1d part of the

~Il..nd.

Waie~ .eyela, ~n reet, 1n observat10n wells 1n Moloka1, 1946 (Measurements made by Herbert Wilson)

. Kamala ~ell (*B456 p. 631 886, p. B7, 911 p. 144; 941 p. 177; 949, P1 1MB, 1l9l, p. lilli, 1 21, p. 1761 102B, .p. lB~). Half a mhe northeaat o. KamalA wharf,

Dat. Water level Date Water level Date Water level

4 B A B A B

~.l\, lIS 1.50 38.50 liar 15 1.50 38.50 Sept.l5 1.67 3e.33 eb. 111 l.,e5 38.75 June 15 1.67 3B.33 Oct. 15 l.83 38.17

:a ... t5 i:~~ 38.'75 July ill 1.67 38.33 Nov. ~~ i·67 38.33 ll)!'· II ~8 67 AWl. 5 1.75 38.ell Dec. 1 50 38.50

Ual~pue well (*B456 P. 83; 886, p. 97; 941, p. 177i 949, p. 24B; 991, P. lQ51 1021, p. 1761 1 28, p. 189). 2.75 mlle. east or Kamala well.

Teat boring Molokal Tl (*845, p. 62; 886, p. 87; 911, p. 144; 941, p, 177J 949. p. 248; 991, p, 195; 1021, p, 175; 1028, p. 189). Geol. Survey, U, 8. Dept. at Interior. 0.75 mile east of airport.

o ff(})uku ~U5ar. {~ 3ha fl--- ---- ----------:-----1 ~---- -() - -- ----2 ~----~- -- -- ---- --;----------

------ ---- --- -------- !Iii ffA-dO ----- -~- 't --!faje-)!'~-LtW-sL--L)j.-5am_P_-------- -- -----u/Y(/I€--/.eiJe/- - - -- _______ ...f.'--~..!£:...~ 1Jy_! __ ~_I-IA1:j ___ ~A.. ___ _

-77~ /l1!:he-r -- -- --- - ---- --- --- -- ------ ------- ---- --/2~&--.:r7 -- - -- ----- --------- ---- ~-----------------------

l_,:34 p_ _224_5 _____ - __ _ __ ________________ ________ ____ __ __________ _

12" q ,.q-7 £3 : 30 ,tj 27,4_9

__ 10_',13 2.7,45 _ ____ L i'.l£P ____ ?7_~_1j_~- ___ _

.3 ',_2 0 _ -27·4.4 -'_ __ . - - -- -- -~-- --~-- --~-~-- -- --- '" -

_L ?_ ":I~!._,,: +7 -_______ _ __ -- --_~_ -_ _ __ __ _ _ ---_. __ _ -____________________ ___ ____ _ _______ -_ - -- - ----------_8LZ_5 8___21~_q.:;; __ _ Ill;PZ __ 27, 1-2 __ I?!': ~ ~ _ _ Z7,lff__ __ __ __ ___ __ _ ll __ :_ 25 _ _ Z 2, fl._ _ __ ____ ___ __

_____ /_~_4.4_e ______ 2-_Z..~11__ __________ _______ _______ __ _ _____ __________________________________ _

__ lZ--jj-1:Z- - -- ------------­I f)//~ /~ __ 27,35

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c w~·!J~ p~/''1 Iesf-

f'4 A- /.) I $1; ~ F' T 3.3

o Q

b-5330 -os ) ke -{ Crt, )'10+ -h :;. ~/'G

fI an7;;~d--L£bJt.-r~~d --• I_~-'

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f 1\4 I ~--_i_-_++I------+------iI~-----..p.1 J,. 1-'-s~t;;;;;.;.---- -.---- -.- --.

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., f

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4'~ \ \ '-"""

W ~ LOG OJ=" PI flO.

.E:L 45'1.0 .; • %GQL,..Pi,e

EL .. 455 - Groynd

EL. A. 50.

IS EL.440

EL.430.

CJ<:\'i

35 .E L.4 20-

;

45 . ELA 10

I I

.~

S Co

63 TEST 69 Q E. -- Abo~t 1000 j'f. 3 b Ttf· VI (J r t ~ we$. t "J e "" t r6

1945 , {D U);i; It. k t" r I :d f.,. tilt; 0

5t..ajt{1I'533a-D S) .-~'

M 1)(,+ u re of ro c k. G;,-o vel ; .5 tit

~a,..d Roc.k

• ~ fIt .

0+ rOGk.

iLI~

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. . .. . . . .. :;"1" ........... .,.: ......... "" .... , .................

,1> .... " .. 1' ...

,I· ...... - ...... .. . ~.. " .. ..... ... .. .. . '. , ........ , i... •. .. ..... .. .. -' I

I .. ~ .. .. ... " ...

.3 3 ~ ..... - .. £.1../ :2 Q :. .. .. ·0' .. .. .'

I" .. , -.' '"., ... , t' .. ~ .. , ... .. J.... '.....

ELI 10

100

o

I Z" Hctrd bau Ide,..

_ EL.390

12" Hard bou Id.er

Cla'1

Clatf

rw-"':"";:":"';'..J..L.L.I..Lj Dec.o m p o~C'd rock..

.,

o~ rOGk.

silt

o

Hard porous boulder,>

M ed. hard erad;. I" 0 do:.

Mad hard Po,·o .. ~ Rode.

J.la~J rod::.

silt

fo1 'l\+u,,~ of rod •. I GI"G.,eI II silt-

HOIrd Grain rock.

J\4pdure: of I ... ~e. ro ... ~

4r,ar~1 t sd~.

C',.n k;C'I-S

38~~~~~E~L~~7~O __

bed

Poro ... ~ bou/OI'.I· wt4·hoiJ~Jn~

EL.210

Si/1

.l::t~~~~ Mlldure ot rock, GrM·.-I,

fh~~!=I!:::;(t·. ~ S j It .

Loole A A

IS

'i"/////P/ , ,! l . o

Sof+, Porou) 4 ... ed Jr.,." bee 0 m po,,~.d rOc."-

• ,- ~ ,: s oft Porous rock.. t-t+t-H~I-TTH

E L ·340

$Oft,POI·OUS.f rned.· hard IJecornpo5ed Rock

~ IS"boulder

till : I I S.fH Ver'i po ~'~ rod:.

. ~ ~ E.:L..3 :3 0

Decornpo.sed bou/d er

.... ed. hard -* f-'orous

D6!COrnpO.!>l2d Roc;k

SoH .. porous

I 35H+++l~I-+t-H=E.-=L:.;. . ..::.3;..;2~O:...-_

cl .• '

; I

D4!!c..omposed rod:; #.ed.horcl, Sll"lhf.l~ porous

r4s1'////L'~ .fL. 3 10

~Ildu,.e ot rock. ~rovel

i SIlt

o

.6\lxfure ot rock G""", .. l .. silt-.

.~~:::::~: EL.I~O 305 ... _ .. -- --"-

+

.no SEA- Lf.

/' Vecornposed Rock

0

EL.:330

Decornpo.sed bould e.,..

""ed. hard 4 porou:;

Dccompo~(Zd. Rock

50ft. porou s .

135 fL. 320

50H Dcrc.om pol) <."d rode

HQrcl rock.

Soft Decompa:,(!d oouldal""-

Dee-om posed roc.k. .M.ed. hClrcl, SI'<Jhf.'1 f'orol/ 5

~~~~~I ,~fL.3'O

J!Al,.,·hlt'"e of s';"Q\[ r-o<-"-GrQ..,e( ~ s;~. . .

~ V

Alx-rure ot rock Gto<"'~1

• oS i It.

. ~_<L_

:Stlt

\ . t·

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............ ",. f.- ........ '" '\" ,"'-..." "'- ~i A A '- . ~

1(0<.--' bed.decompc Po I-toe hoe wr~h olarlne

4AS 10 !~"" ~,~ I", " -.. : ~~ ~:-O:' I ~--';'\I I~~ " 1'--.. "" 0, bc.q '~ '""'-- "~12 0 c.k t ~ "-~" L.ese AA

"- \...:1 ~~~~ ~ ~~ "--.. ':::--.. "-~ ~" "'~~ '"'--.,. ~ ~'" 1-

~~~.,. .00 SEA- LEVI 455 ........ ----

.s CA1.ft. . ,.

Hor,u:.o"ttih: ~t.'c.ore s Ver:t.lC:(11, 1-- 4 ~-o"

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