HomeMy WebLinkAboutSewer Information
DICKINSON-OSWALD
& ASSOCIATES
AFFILIATED WITH:
AERO SERVICE CORPORATION
ENGINEERS AND SURVEYORS
433 9TH AVENUE -- ANCHORAGE
MAILING ADDRESS:
BOX 326- ANCHORAGE, ALASKA
99501
July 20, 1965
Mr. Clifford P. Judkins,
Greater Anchorage Health
217 "E" Street
Anchorage, Alaska
Supervising
District
Sanitarian
Re: Your letter of July 16, 1965, re:
Sewage Lagoon
Woodland Lakes Subdo
Dear Mr. Judkins:
Please be advised that in response to your telephone
conversation of 4 p.m.~ July 16, 1965, immediate action was
taken to repair the sewer line connecting the Woodland Lakes
sewer system to the lagoon. Repair was completed a~ 10 p.m.,
Saturday evening, July 17, 1965.
The damage was apparently caused when an electrical
contractor was working in the area and severed the line.
Very truly yours
D~N-0SWALD &~ASSOC.
Lewis E. Dickinson, P.E.
LED/mr
CC:
Mr. N.E. Sommers
c/o Central Alaska Utilities,
Inc.
DICKINSON - OSWALD & ASSOCIATES
BOX 326 ANCHORAGE, ALASKA
AIRPORT
Greater Anchomage Area
217 "E" Street
Anchorage
Health Distmict
ATTENTION: Mm. Clifford P. Judkins, Supervising Sanitarian
DAVID ~. L,
20 April 1964
Mr. Jim M~re
Woodland Lakes Subdiv~sio~
1900 Northwesteza% Avenue
Anchorage, Alaska 99504
Dear Sir:
~edtately following the emergency brought on by the earthquake of March
196~ the Emergency Mealth Service installed a hypochlorinator ~n your water
supply System. This installation has been operated by the Emergency Health
Service for the protection of your supply and distribution System. After April
30~ 1964, the chlorinator will no longer be operated by this agency.
For the present, the chlorinator will remain installed on your water supply.
Final disposition will be made ac a later date. We recommend that you continue
to operate the chlorinator. Under the State of Alaska Administrative Code~
you are resp~nsible for the safety of your water supply and system.
A temporary type ~nstallation was m~de. The following changes would iml~rove
the operation and maintenance:
1. Locate the chlorina~or on a solid base ]us~ above the level of
Cop of the h~oghlori~e solution
2. Install a permanent elec~rlcat ou~leg for the chlori~agor,
3. Adjust ~he ~hlorlnator ~ettlng and strength of the h~o~hlor~e
solution ~o sire a chlorine ~esidual of 0.2 parts per m~ll~on
at the end of ~he system.
The.Enviro~engal Health Sscglon Of the Creater Anchorage Health District will
be available ~o help wlth any prOble~ you may have regarding the
You coopera~i~ i~ this ~Cter has been greatly
Sincerely yours,
Thomas R. McOowan, M.D,, Dr.
Chief~ Emergency Health Service
Central Alaska Utilities, Inc.
505 Second AvenuetApar~ent 20~
Anchorage, Alaska
P~: Sewage lagoon
Woodland Lakes Subdivision
A recent inspection of you~ sewage disposal lagoon indicates ghat ~here
are still a nUmber o~ ~t~ ~hich mu~t be corrected ~ ~e~ the
2) T~ ~un-o~ leak ~s not been repaired and 8hould de~lu~ely be
corrected pr~or ~o the use o~ the la~ ~Or
3) T~ e~fluen~ line has ~ been extended ~o ~he cen~er of 2he pond,
~or has the ~nhole adjacent 2o ~he las~n b~n iuscalled,
SlnceEely,
Medical Dt~ec~o~
cc: Paul Fo Robf~gn, A~ty sC Law
Mr. Frank Go
Donald H, Penner,
gan~ta~an
2600 No.thorn Lishta Blvd.
oodland
Disposal Syste.~
point of vie~. The ~eOpS of the
It ia not neces~r~ to pu~,p the ~ffluent ~ut of ~!le existing oxida'~lon
'l'l~k you very much.
cc: SCf~O --
i~y~ ,~o P. ~la~hu~,~ Sanit~y EnElneer
~or~. $~,~2 Re, 6-§9 :~'~
STATE O1: ALASI~,
Inter-Department Route Sllp
r-! Approval
[] Signature
[] Comment
[] Contact Me
[] Prepare Reply
[] For Your File
~--1 Note & Ret~n
[] Initial & Return
[] Return As Requested
[] Return For Approval
[] Necessary Action
[] Your In~:ormatlon
Remarks:
F Amos J. Alter, Chief
rom'
_ ' Sec. of Sani~tat~i.(~&
STATE E)F ALASKA
DEPARTMENT ElF HEALTH Ai~4D WELFARE
Division of Public Health
Alaska office Buildin?
Juneau, Ala'ska
December 8, ].961
Mr. Paul F. Robison
Alaska Real Estate Investment Corp.
P. O. Box 1199
Anchorage, Alaska
Re: Woodland Lakes Subdivision
Anchorage
Dear Mr. Robison:
We received your letter dated ~ce~%ber 2, 1961.
This department does not have any objections to the construction of a
sewage lacoon. The design and construction of the sewage lagoon will
the requirements of this~departn~nt if desi.~ed according to the design
criteria given in the verifax copy of the pages 1852193 of the ASCE Manual
#36, entitled "Sewage Treatment Plant Desi~cn".
We will be looking forward to receiving two sets of preliminary plans,
engineer's report, design criteria, and application for approval.
The addres:s of our t~e~-ional Office in your area is 32? EaRle Street,
Anchorage. if you have any ~uestions or problems either the regional
office Or the central office here in Juneau will be very ~lad to anser
them.
q]~ank you very much.
Sincerely yours,
Amos J. Alter, Chief
Sanitation & Engineering
SPM:r~i
Eno: Verifax as above
cc: SCRO
[]You were visited by -
Telephone: N~mber
Please call
Will call again
O Returning your call-
~ Wishes an appointment
~ Wishes a home visit
~ Is referred to you by:
Extension
Left This Message: ......
1
Received by: .~......f.~
C
0
P
2600 NOrthern Lig~hs
Anchorage, Alaska
FA 2-3765
ELTON W. WIEMAN
Registered Civil Engineer
May 31, 1961
Dept. of Public Health
Div. of Public Welfare
Alaska Office Bldg.
3uneau, Alaska
Attn: Mr. Amos J. Alter, Ch. Sanitation and En§r. Br.
Dear Mr. Alter:
I have received your review of the plans and specifications
for the Woodland Lakes Water System, contained in your letter dated
May 24, 1961. I concur with the four comments you made and believe
them to be very constructive suggestions, I am revising the drawings
to incorporate the ~gquested changes.
We are most appreciative'of your very prompt review, as the
water company was anxious to start construction as soon as
possible.
The pumphouse is already under construction and laying of
the water lines will probably start this week.
Your representatives are cordially invited to inspect the
construction at any time.
Very truly yours,
Elton
Ch. gngr., Woodland Lakes Development
Alaska Real Estate Investment Co.
Central Alaska Utilities, Inc.
Anchorage Office, Health Dept., Attn. Warren Powell
C
0
P
Division of Health
Alaska Office Bldg.
Juaeau, Alaska
Mmy 24, 1961
Mr. Elton W. Wieman
Registered Civil Engr.
2600 Northern Lights Blvd.
Ancho=age, Alaska
Re:
Woodland Lakes WaterSystem
Anchorage., Alaska
Dear Mr. Wieman:
One set of plans and specifications for the subject project was
received in this office May 16, 1961. They were reviewed with respect
to sanitary andupublic health engineering aspects and our comments are
as follows:
1. Fire hydrant flanges may be installed but the hydrants
themselvesshould not be installed until such time as
adequate fire capacity is provided.
2. The American Water Works Association recommends for
water mainsdisinfectton that a 10 ppm chlorine residual
be present after a Z4 hour detention period.
3. Manholes should be designed to prevent a¢cummulation of
surface water. The manhole should have an over-lapping
box type cover, extend a minimum of one foot above grade
and drain to daylight or to freely draining soil.
4. We recommend that the water be routed through the pneu-
matic tank so that as the system expands and chlorination
becomes necessary, changes will not be required to pro-
vide sufficient chlorine contact time.
We appreciate the very complete engineering report and set of
plans which greatly facilitated our review. We will look forward to
receiving your comments on the above items.
Sincerely yours,
DRH:rgl
cc: Robto Thompson
(Central Alaska
Utilities, Inc.)
SC Reg. Office
Amos J. Alter, Chief
Sanitation & Engineering
C
2600 Northern L~hts Blvd.
Anchorage, Alaska
Phone: FA 2-3765
ELTON W. W~N
Registered Civil Engineer
ENGINEERING REPOKT
FOR
WOODLAND LAKES WATER SYSTEM
(To accompany plans and specs, File No. WLW 1-7)
GENERAL:
The Woodland LakesWater System is being installed by Central Alaska Utilities, Inc.,
to serve the developed portion of the Highland Park Subdivision and Unit No. 1 of the
Woodland Lakes Development. There are no present consumers, however, the expected
rate of growth is about 30 homes per year initially with an accelerated rate after the
area becomes established. The area to be served is the first unit of the planned
Woodland Lakes Development which in total comprises 6~0 acres under one ownership
and which, it is hoped, will ultimately involve some 2000 residential units, including
apartments, duplexes, schools and shopping center. As other adjacent subdivisions
develop it is planned to expand the water system into these areas. Although hhere are
no actual consumers at the present time, several lots have been sold by the subdividors
with a commitment that the water system would be in operation this summer. The basic
problem in design has been to develop a system which can be economically operated
during the first few years of small consumption, and still be readily expandable to
an ultimate large system of unknoWn size and rate of development. Basically, this
has been accomplished by theprovision of eight well sites (indicated as parks)
dispersed throughout the 6~0 acre proposed development. One such size contains an
existing well of excellent potential and there is every reason to believe that adequate
wells can be obtained at all or most of the reserved sites. The proposed sites will be
tested prior to other area development so that sites may still be relocated if test
~w~l~ ~o .~= ~ ~, At unusually good locations, such as the first sit,e, it is
planned co put down two wells, separated by about 30 ft., to provide an uninterrupted
supply and to develop more fully the capacity of the aquifer. Under normal operating
conditions, only one of each of such pairs would be operatin§, the second servin$ as
a standby and supply for firec~demand.
Per-capita demand is estimated at 100 gallons per day or 400 gallons per home
per day. Peak demand is assumed to be double the daily average.
Chemical and bacteriological tests on the first well have not been completed,
however, all similar deep wells in the vicinity have yielded water of excellent
quality.
,!Rou Hw4 R' sources:
Final well log and test pumping data have not yet been received from the drilier
and will b~ forwarded as soon as available. However, the following general information
is submitted herewith:
The initial well is an 8" we11~ approximately 280 feet deep~ It has a 6~ x 8"
well screen set in a highly perVious gravel stratum, and has been test-pumped for
over 10 consecutive hours at 205 GPM, with a workable drawdown. The static water
level is approzimately ~1~ below the surface. For the next increment of expansion
it is planned to drill a second well on the same well reserve, 30* east of Well No. 1.
When.~the 280* stratum is encountered the first well will be pumped and the draw-
down observed in the second well. If any undue influence is observe~the second well
will be drilled further to tap deeper and different aquifers, at least ~wo of which
are believed to exist.
METHODS OF NAINTAINiNG PRESSURE IN AI,!, PAR~S OF ,SYSTEM:
Since all p~rttons of the surrounding area are at relatively similar elevations~
no pressure relief or booster stations are required. All pumps will be pressure
controlled (approximately 50 PSI working pressure) and pressure will beequalized
with pneumatic storage tanks~ the ~iital tank being 2000 gallon capacity. One or
more such equalizing ~anks will be installed at each well site, It is planned to
-3-
use deep well turbine type pumps, of capacity roughly equivalent to that of the
respective wells, except that the initial pump to be installed will be of 80 GPM
capacity to provide mo~e economical operation until demand warrants increasing
the pump capacity. By this means, draw-down~wiil be minimized and p~mping costs
will be reduced. The initial pump to be installed is a 10 HP, Pacific Model No. 8
SA 9 DT deep well turbine of approximately 80 GPM capacity, already owned by the
water company. Minimum size of distribution mains is 6". Mains will be gridded
as the system expands, so that adequate fire flows will be possible in all parts of
the system as soon as sufficient wells have been added to the system to ~roduce the
necessary fire supply.
Connections with other nearby water distribution systems have been discussed
~ut nothing has been finalized in this regard. In the event that something in this
respect can be worked out, fire supplies will be available much sooner for all
concerned.
DISTRIBUTION SYSTEM:
All pipe for the present installation will be 150 lb. class, cement-asbestos
pipe, manufactured by Johns-Manville, in six and eight inch sizes as Shown on the
accompanying plans, File No. WLW 1-7. Depth of cover will be 9'° The subsoil
in the area is fine, clean sand, which does not have e~cessive frost penetration.
For example, there hashever been a"freeze-up in the adjacent Southwood Park
system, which has been in operation nine years with 7 to 8' bury. Fire hydrants
will be installed with the distribution system.
Well No. laan~ Pumphouse ............... $15,000.00
3869 1.f.6" main @ $8.00 per 1.f. ...........
760 1.f. 8" main @ $9.00 per 1.f. ...........
6 each fire hydrants @ $600Q00 each ..........
Total for 1961 program
23,214.00
6,840.00
3,600.00
$48,654°00
,~...~.~--~o~ ~ ' ~ ~ ALASKA D£PARTMENT OF HEAU
APPLICATION FOR APPROVAL OF PLANS
Alaska Department of Health
Sanitation & Engineering ·
Territorial Building
Juneau, Alaska
(City)
.....
(BOX number or street addre~)
.................. 19
(Month) (Day)
HE' Woodland Lakes water ~¥$t~ ................................................................
.................... (~'a~J"~f ~rJ]~et '}~1: which approval of pi.ns Js requested)
In accordance with Title 40, "Health and Safety", Chapter 1, Section 40-1-6, Alaska Compiled Laws Annotated 1949, as
amended by Section 16, Chapter 118, Session Laws of the Legislature of 1949, and Rules and ~egulations promulgated
thereunder, we,
Cen'~ral ~aska ~iiiiies~ ~ ............................................................................
......................................................... i~;~ of ~a~E
herewith submit for your review and approval, with respect to SANITABY F~ATURES, duplicate sets of complete plans
f the ~ro~osed ~ro~t do~cribed below. "Comulete plans" shall be taken t~ ~ean General plans, ~e~iled plans and speci-
ficationS, a~d a ~oj~l-~ort ~En~ineering ofArc~itect~ral 2eport~ meludm~ necessary da~ reqmred for full unders~nd-
in~ of S~NITAR~ FEATURES of design.
(Givecompletebutbrief description of project)
...................... ~.m~.ic ~at~ m~l.y .~ ~.~ s~at~..~e s~e._~co~d_~a~ .............
.......... _~.tvi_aion and to_be ~ahle of___~aumi~__~t~___s~o~O.__~em~,..---.Sup~l~.--to .....
....... he. f~o~ deap..~eXls. .....................................................................................................
These plans were prepared by -.. ]~l'~f~l ~ -~l~.a¢1 ..............................................................................
(Name of Designing Brig neet. Arch tect or F rm
...... 260_0..}~mc~hamm Li0h~$---BlVd~ ................... and by or under the direction of the following Engineer~) or
(Adaress)
~ duly licensed to practice in Alaska:
...... ~lton..~. ~!~an ............. Civil .................... ~37-.~ .................
(NAME) (TYPE OF LICENSE (Civil, Mechanical, etc.) Certificate of Registration NO.
This project is to be financed in the following manner:
Amount to be financed locally by. ~.~ ~_~.~._.~__~l~ ~_~1~_. ~_~0~1~ .__~.~e ......................
(General Obligation or Revenue Bonds, Direct Assessment, etc.)
Direct grant from ...................................
Government loan by ...........................
Other financing ........................................................
Total estimated cost of this project is $ ~6~,._0_,0_ .........
These plans are being submitted to you at least one month prior to the contemplated date of advertising for bids
(Date bids wIH be called)
We understand that construction shall not be started until your final approval of these plans has been received; that
no revisions in the plans affecting the SANITARY FEATURES of the project may be made subsequent to receipt of your
final approval unless such revisions be submitted and approved; that construction will be carried out in accordance with
the approved plans; and that unless construction on this project is started within a two-year period subsequent to your
approval, such approval will become void.
(Applicant) _..~.J~S_~__.~....._ .~.. ~ ._.~..~.r~.. ~..~_~,:_%~,_ .........................
............. .......................
(Official Title) .(~- ....... : .......................................
PART I! - For Use of Sponsor
per lot ~ PublicSystem [~ System [~ Wells
INSTRUCTIONS TO SPONSOR: This form is used where Sewage Disposal i~ to be by means of Septic Tanks with subsurface
absorption fields. Federal Housing Administration or Veterans Administration will furnish the form when applicable, des-
ignating the public Health Authority. Percolation tests and soil borings shall be made and tabulated in Tables I and II,
Par~ II below, by a licensed Engineer or qualified Sanitarian. This report in duplicate, accompanied by the required top-
ographic map, shah then be submitted for review andanalysis to the following Health Department: (Name and Address)
INSTRUCTIONS TO ENGINEER OR SANITARIAN:
1. An adequate number of tests shall be made (one per acre, or
if soll conditions indicate, a greater number will be required)
to show clearly the absorptive ability of the soft throughout the
tract. (Use Table I)
2- Bach test hole shall be located by a key number on a topo-
graphic map of the tract.
3, Soft borings shall be made (one every 5 acres, or if subsoil
conditions indicate a greater number will be required) to show
clearly the type of soil existing beneath the absorption area.
Borings should extend to a point at least 6 feet below the finish
grade of proposed absorption trenches. {Use Table II)
PROCEDURE TO FOLLOW IN MAKING REQUIRED PERCOLATION TESTS=
1. Dig or bore the holes with horizontal dimensions of from 4 to
12 inches and vertical sides to the depth of the bottom of the
proposed absorption device. Holes can be bored with 4 inch di-
ameter post-hole type auger.
~ Roughen or scratch the bottom and sides of the holes to pro-
vide a natural surface. Remove all loose materiels from the
hole. Place about 2 inches of coarse sand or fine gravel in the
hole to prevent bottom scouring.
3. Fill thehole with clear water to a minimum depth of 12inches
over the gravel. By refilling, if necessary, or by supplying a
surplus reservoir of water (automatic siphon), keep water inhole
for at least four hours, and preferably overnight. In sandy soils
ie GW, GP, SW, or SP classified according to the '~UnifiedSofts
Classification System", the above saturation procedure is not
necessary and the test can be made after the water from one fill-
ing has seeped away.
4. Percolation rate measurements should be made on the day fol-
lowing the saturation process, except in sandy soils.
5. If water remains inthe test hole after overnight saturation, ad-
iust the depth to 6 inches over the gravel. From afixed reference
point, measure the drop in water level at approximately SO-minute
intervals over a 4 hour period. The drop which occurs during the
final 30-minute period is used to calculate the percolation rate.
Note: The engineer should determine if the water in the test
hole is due to a high ground water condition or the permeability
of the soil. Report ground water conditions on reverse of Form
and soil types in Table ~
5. If no water remains i~ the hole after overnight saturation, add
clear water to a depth of about six inches over the gravel. From a
fixed reference point, measure the height of the water surface at
approximately 30-minute intervals over a 4 hour period, refilling the
hole to a depth of 5 inches when the percolation rate indicates the
hole will run dry before the next reading is made. The drop which
occurs during the final 30-minute period is used to calculate the
percolation rate. Note: If a hole must be refilled to obtain a final
30*minhte reading, determine from the previous reading the water
level drop during that interval. Add water until the level above the
bottom equals this figure plus one half inch. Continue, measure
drop during the final 30-minute period.
7. In sandy softs, or other soils in which the first six inches of
water seeps away in less than 30 minutes, after the overnight sat-
urniinn period, the time interval between measurements can be taken
as 10 minutes and the test run over a period of one hour. The drop
which occurs in the final 10 minute periodis used to calculate the
percolation rate.
TABLE I - PERCOLATION RATE (RECORD RATE IN MINUTES PER INCH
~stHoh Percolation Test Hole Percolation Test Hoh Percolation Test Hole Percolation
1 ~ 11 21 31
2 .~-~ 12 22 32
3 ~o ~ ~o /~,-~,~e~ 13 23 33
4 ,~ 14 24 34
5 ~ff 15 25 35
6 / ? 16 26 36
7 ,~5- 17 27 37
8 ~ 18 28 38
9 ?~.~ 19 29 39
10 20 30 40
'FABLE II - SUBSOIL DATA (GIVE TO A DEPTH ~F AT LEAST 6 FT.)
NOT E: Description of soil by Unified soil Classification system is preferred. When ground water is encountered, use
last line to record depth at each hole.
Depth Test Hole 1 Test Hole 2 'rest Hole 3 Test Hole 4 Test Hole 5 Test Hole 6 Test Hole 7 Test Hole 8
0-/5 /'vi/_ ~)~_¥ /~IL ~-2: 5NI /~-~ Z/iL o-.~Y? ~-.~4 ~.-2 ~ ~/_ :~2 t~
Z-I~ ~1~ ~-I~Y~.~P ~-~ t~l~ ~-~/~ .~p ~'~-/~ ~-I~ ~ 2-W ~S~ ~-!o ~P
7//?
~P (f~e~ /n ~11 cas<.'z) (PartlliscontinuedonReverse)
FHA FORM 2084e SUBDIVISION SEWAGE DISPOSAL REPORT
VA FORM 26-1888 ~c~_ ]oaci~Li o1~ ,~/Ce~/~/~ ~h ~he ~
FHA FORM 2084¢
VA FORM 26-1888
SUBDIVISION SEWAGE DISPOSAL REPORT
PART I - To Be Completed By Federal Housing Administration - Veterans Administration
Form Approved
Budget Bureau No. 63-R548.6
Name and Location of S~bdlvision
PART II - For Use of Sponsor
Water Supply Source: Date
Commtmay Individual
[~ Public System [] System [~ Wells
INSTRUCTIONS TO SPONSOR: This form is used where Sewage Disposal 1~ to be by means of Septic Tanks With subsurface
absorption fields. Federal Housing Administration or Veterans Administration will furnish the form when applicable, des-
ignating the Public Health Authority. Percolation tests and soil borings shall be made and tabulated in Tables I and II,
Part II below, by a licensed Engineer or qualified Sanitarian. This report in duplicate, accompanied by the required top-
ographic map, shall then be submitted for review and analysis to the following Health Department: (Name and Address)
INSTRUCTIONS TO ENGINEER OR SANITARIAN:
1. A~ adequate number of tests shall be made (one per acre, or
if soil conditions indicate, a greater number will be required)
to show clearly the absorptive ability of the soil throughout the
tract. (Use Table I)
~. Each test hole shall be located by a key number on a topo-
graphic map of the tract.
3. ~oil borings shall be made (one every 5 acres, or if subsoil
conditions indicate a greater number will be required) to show
clearly the type of soil existing beneath the absorption area.
Borings should extend to a point at least 6 feet below the finish
grade of proposed absorption trenches. (Use Table II)
PROCEDURE TO FOLLOW IN MAKING REQUIRED PERCOLATION TESTS:
L Dig or bore the holes with horizontal dimensions of from4 to
12 inches and vertical sides to the depth of the bottom of the
proposed absorption device. Holes can be bored with 4 inch di-
ameter post-hole type auger.
2~ RouBhen or scratch the bottom and sides of the holes to pro-
vide a natural surface. Remove all loose materials from the
hole. Place about 2 inches of coarse sand or fine gravel in the
hole to prevent bottom scouring.
3. Fill thehole with clear walerto a minimum depth of 12inches
over the gravel. By refilling, ff necessary, or by supplying a
surplus reservoir of water {automatic siphon), keep water inhdie
for st least four hours, and preferably overni~at. In sandy soils
ie OW, GP, SW, or SP classified according to the ,' Unified Soils
4. Percolation rate measurements should be made on the day loi-
S. If water remains inthe test hole after over~dght saturation, ad-
just the depth to 6 inches over the gravel. From a fixed reference
intervals over a 4 hour period. The drop which occurs during the
Note: The engineer should determine if the water in the test
hole is due to a high grotmd water condition or the permeability
of the soil. Report grotmd water conditions on reverse of Form
and soil types in Table Z
6. If no water remains in the hole after overnight saturation, add
clear water to a depth of about six inches over the gravel. From a
fixed reference point, measure the height of the water surface at
approximately 30ominute intervals over a 4 hour period, refilling the
hole to a depth of 6 inches when the percolation rate indicates the
hole will rte dry before the next reading is made. The drop which
occurs during the final 30-minute period is used to calculate the
percolation rate. Note: If a hole must be refilled to obtain a final
30-minUte reading, determine from the previous reading the water
level drop during that interval. Add water until the level above the
bottom equals this fi~ure plus one half inch. Continue, measure
drop during the final 30-mlnute period.
7. In sandy softs, or other soils in which the first six inches of
water seeps away in less than 30 minutes, after the overnight sat-
uration period, the time interval between measurements can be taken
as 10 minutes and the test run over a period of one hour. The drop
wh{ch occurs in the final i0 minute periodls used to calculate the
percolation rate.
TABLE I - PERCOLATION RATE (RECORD RATE IN MINUTES PER INClt
Test Hah Percolation Test Hole Percolation Test Hah Percolation Test Hole percolatlen
1 ~,~- 11 21 31
2 0~o 12 22 32
3 ~o~ ~ /~,-*~,~ 13 23 33
4 ,~,b~ 14 24 34
5 ,2~5- 15 25 35
6 ? 7 16 26 36
7 ~5- 17 27 37
8 ~,~ 18 28 38
9 ~ 19 29 39
10 20 30 40
TABLE II - SUBSOIL DATA iGIVE TO A DEPTH OF AT LEAST 6 FT.)
N0T E: Description of soil by Unified Soil Classification system la preferred. When ground water is encountered, use
last line to record depth at each hole.
Depth Test Hole I Test Hole 2 Test Hole 3 Test Hole 4 Test Hole 5 :rest Hole 6 Test Hole 7 Test Hole 8
O - ,&
Ground Water
7# ?
(Part li is continued on Reverse)
FHA FORM 2084= o, SUBDIVISION SEWAGE DISPOSAL REPORT'
VA FORM 26r1888 0~. ]oc-~q ~Li o,h G/(~'~/~ ~ ~ ~
']oId Su.~pI!nq qogo
2ut$oo]tg suo.B~.puoo o~!ooffs uodn posgq oq PInOqs tuo~s,~s qo~o ~o uoDuII~Su.~ pug 'uo;~on~$suoo 'u$!sop oq,l. 'suiossfs
~tug]-o~dos l~npvqpu! oq] to uo~.]~IIgSSu! oq$ :OAO0 ~OU op $~OCiO~ SIq$ UO po~opuo~ suo~sniouoo oq$ ~mt~ poo~s~opun s~ $I
'POII~Su! sl I~SOdS!p ~uonltJO to poq$om o~u~o]lu ~uUaOllOJ oql j; sma~s~s ~tu~ o!ldos Jo osn oq~ ~oJ olq~]~.ns si []
'sPlOll uol~d~osq~ oo~Jmsqns q~.~ stuo]s,~s qu~] o.Bclos Jo osn oq] ~oJ olq~lns ]ou si []
· poa~nbox oq II~ aPICeS Iagoffg~p
oouSxas-qn~ ~p@aoganoouo e~ ao%~n punoa~ $I .Moo~ qg~a e~%d o~ndoeg puuoa~ II~$~o~q oq~
og~%~a~oo@u ~a p@ao~unoouo pu, s ou~$ oR& 'emoq qo~o ao$ p@p~Aoad eq plnoqa mooapoq ~od
'sploij uo!~ff~osq~ oo~jmsqns ql!~ smolsgs ~u~ o!~dos 1o osn oq~ ~oJ oI~lns si ~
(penultu°D) ' II ,kUVd
The Files
Calvin ~.~iney, Jr.
Mr. Eltan ~4ieman, registered engineer, contracted this office on several
occasions regarding the use of a lagoon for sewage treatment '?or a pro-
posed 600 acre hoastng development in the Sand Lake area called Woodland
Lakes. The firm developing this lane] is the Aaa Realestate Investment
Corp. and the board is made up of Ben Culver, Frank Reed, Ken Shepard~
Allen Halley, Pa~l Robinson~ Ed Cfi%tendon, and Den Craig.
Eventually a 12,0OO feet outfall to Cook Inlet will be constructed. After
confir~ing with Nm. Alter, Mr. Wieman ~as informed that we would approve
a lagoon; however, it must meet all accepted design staudards, including
a quarter mile b~ffer zone, impervious basin, and removal of all organic
over burden. Also the approval would be baaed on the basis that a lagoon
would be experimental.
In discussing lagoons with the staff of the Arctic Health Research Center
they made the fallowing co~ents on ~e basis ef the literature and their
experience:
Their original ideas were that in Alaska the area should be two
to four times the North Dakota studies. Since then they have
becc~e less conservative.
2. The quarter mile buffer zone Should. be ~aintained.
3. The pond depth in s~mer should be three to five feet, preferably
three feet ~nd allotting for build up during the winter months.
The seepage from the organic over burden lowers the pH and is detri-
mental to the growth of beneficial algae.
5. The lagoon should be loadend in the center to allow proper loading.
6. Primary treatment is unnecessary.
Mr. Alter felt that we should maintain twice the area as in the North Dakota
studies.
cc: Walker, ~D'~