HomeMy WebLinkAboutNORTH WOODS UNIT 4 Expired S-7525
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH & ENVIRONMENTAL PROTECTION
Environmental Health Division
CASE NUMBER: DATE RECEIVED: COMMENTS DUE BY:
S-7525 March 2, 1984 March 19, 1984
SUBDIVISION OR PROJECT TITLE:
North Woods Subdivision Phase V
.)/PUBLIC WATER AVAILABLE
(
(") COMMUNITY WATER AVAILABLE
?~'PUBLIC SEWER AVAILABLE
COMMENTS:
, .f
,/
90
d
7
4S~G oo 'z~ ' jz.ooo ,
' Z
, /I /2,
~ 7
£5
Td ~0
ALASKA
I(uIROF1FII F/TAL CORTROL IBC.
~nqinecrinq $ ~nuironmenlol Sludies
January 3, 1984
Mr. Steve Skaggs
P.O. Box D
Chugiak, Alaska 99567
Dear Steve:
On December 29, 30 and January 3; I logged preliminary test holes for a
proposed subdivision, called Northwoods Tract C. This subdivision is
located in South Peters Creek. It is bordered on the West side by
Sampson Estates. It is bordered on the North and South sides by muskeg
valleys.
Landforms
This subdivision is located on a ridge lying East-West which is about
1/3 mile wide. The gently sloping top the ridge is 80 to 100 feet above
the valley bottoms. The ridge falls steeply to the Southern valley.
The side of the ridge slopes about 15% toward the Northern Valley, then
drops 25 feet to the valley bottom.
Vegetation
The ridge is predominately poplar, birch, and alder, with scattered
spruce and devils club. The sloping ridge sides contain a greater
percentage of spruce. The valley bottoms are primarily black spruce and
alder with large patches of muskeg.
Soils
The test holes were dug by a backhoe. All testholes were terminated at
16 feet, or by water, or extremely dense soils. Percolation tests were
run on the same day the testhole was logged. The location of the test
holes are shown on the attached map. These locations are approximate.
They must be accurately located if the percolation tests are used for
septic systems. A green color indicates an unadjusted soil rating less
than 200 sqft/bedroom. A yellow color indicates soils between 200 and
350. A red color indicates soils which is unacceptable for septic
systems. A blue color indicates a high water table, within 6 feet of
ground level.
The top 1 to 2 foot of the soils horizon is decayed organic material.
The next 2 to 4 feet of soils is a sandy gravel in some test holes, a
silty gravel in others. A silty gravel extends down to the bottom of
all the test holes. It often becomes denser as the depth increases.
many test holes there were seeps at 9 to 10 feet.
In
Type of On-Site Systems
Due to the presence of better soils near ground level, and a high water
~able in some test holes; I recommend that shallow septic systems be
installed. Where there are layers of sandy gravel the depth of the bed
or shallow trench should be near the top of the layer. In no case
should the depth of a septic system exceed 5 feet.
Conclusion
It would appear that the subdivision is developable. I believe
additional soils tests near 3, 7, and 12, may be necessary if lot sizes
are less than 2 acres. I highly recommend a large lot size allowing the
placement of two or more complete septic systems. I also believe that
percolation tests below 200 should be approached with caution. The good
soil in these areas may only extend for a short distance around the test
hole.
Sincerely,
Jim Green
Civil Engineer
Approved by:
Addendum: Water Table monitoring is in progress as per Municipality of
Anchorage, Department of Health and Environmental Protection handout;
I.B.9., dated 5/5/83. Specifically monitoring of ground water table
once a month u~til June 1, 1984.
(
ALASKA i1UIROnmCnTAL COIqTROL $CRUIC65, IRC.
~n§,n~¢rin~ 8 ~nuironm~nlol ~ludles
Supplemental Soils Information.
Subdivision /~O~.TI'~OOI~ /~o1~. Block
LOT
TH I
1
2
3
'4
5
6
11
12
13
14
15
16
17
18
19-
20-
LOT
TH~.
LOT LOT
TH~ TH N
OL- o~'0 c~¢, Of~r~.- ,5, I-!¢ " 1 1
~ '5r~ x, z,l~ q'~( ~/
? 7
8 8 8
9 9 9
11 11 11
12 12 12
13 13 13
~4 14
15 15 15
16 16 16
17 17 17
18 18 18
19 19 19
20 20, 20
t200 ~Jcsl 33rd ~ucnut. Sud¢ ~ * Anchoroq¢. AI.sko 9~5o3 · [907) 276.136t
dlnUIROiqm nTAL CONTROL
~n§inetrinq $ ~nu,ronm~nlol $1udi,s
Supplemental Soils Information.
Subdivision ~OP.l"~-~4Oob~ A~. Block _._~T ~')
LO~
~H5
LOT LOT
THW ~H9
3 3
6
7 7
LOT
TH5
:c
~ 6
7
10
11 11
12 12 12 12
13 13 13 13
14 14 14 14
15 15 15 15
16 16 E~o 16 16
17 17 17 17
18 18 18 18
19 19 19 19
20- 20 20 20-
.J
1~00 ~U~, 33r~1 ~udm~. Suii¢ B · ,~nc~,oro~e. ~1o~o 995,03 ,. (907) 276.1361
AL, 3K,( 61qUIROI3Fnd3TAL COI TROL cRU u. 5.
~n~,n~rinq [., ~nuironmcnlel ~luch~$
Supplemental Soils Information.
Subdivision ~/¢L~'IqWGO'~ Ab'b, Block "~,,(~T
LOT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
LOT LOT LOT
TH ~0 TH/I THI2_
3 3 3
8 8 8
9 9 }~{ 9
10 10 10
11 11 11
V 5~
12 /--~ 12 -
13 - _~'. 1~
14 14 ~b
15 , ,t z(~ 15
16 ; 16 - 16
17 17 17
18 18 18
19 - 19 - 19
20 ~- ~
ALASKA' EhUIiqOhmEFITAL £OF1TROL
~nqin~rin9 $ ~nuironm(nlol
Supplemental Soils Information.
LOT LOT LOT
TH I.~ TH ]El TH /_6
LOT
T It
Pt - Ps
6
7
8
9
10
11
12
13
15
16
17
18
19
2O
175~
ALASKA-EF1UIBOriFFIEF1TAL COF1TF OL $ r UlCe_$,
~'n§m~rinq $ ~nulronm~nJoJ Stu~i~s
Supplemental Soils InformaLion.
LOT
TH
1
2
3
4
?
8
g
10
11
12
13
14
15
17
18
lg
2O
3
LOT LOT
TH /'~ ~H I7
5 I'/t~ Gt~v~/2
~. /7%:, 3
4
10 - 10
11 _.~~ 1
13 13 -
14 14
~5 15
16 ~ 16
17 17
18 18
19 19
20 20
LOT
TH
4
7
10
12
13
14
17
/-iL,., .... t( '~UIIIIIL;IIiAL tUIIiliUL ..')ClIbL.L., ,.,...
~.~jintmn§ [~ ~nuironm~ntol St~dJ~$
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
DATE
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE
ZONE TESTED
/J
READING # CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
p:~ ,.~o4 ~e ~,' DATUM
FINAL PERCOLATION RATE
PERFORMED BY. 0:
MOA ST83L024
SQUARE FOOT/BEDROOM
(min/in)
~u/ '7_7
~..~intmM [, ~,ir~mtnlal
ADDRESS
PERCOLATION TEST DATA SHEET
ZIP CODE
LEGAL LOCATION :Or-~/O~:~~
TOTAL DEPTH OF HOLE /¢
ZONE TESTED 2., ._~
ft TO
TEST HOLE DIAMETER
READING ~) CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
FINAL PERCOLATION RATE ~]~' .(min/in)
2._~0 SQUARE FOOT/BEDROOM
PERFORMED BY ~-~ ~/?
' 0 ~'~"\
Z ~ "" , ~ .'l...__:-- .....
MOA ST83-024 ~:,, ]~ ~ ~--
~L~',,.,,,, ~.( 'iiiUillliuill~L t,,YiliiiUL bbii,.,~,c..,, ~.,~,.
~Minctrin~1 G ~nuironm,'nlol
PERCOLATION TEST DATA SHEET
ADDRESS
Z! P CODE
LEaL LOCATION ~Or~uVoO~5'
TOTAL DEPTH OF HOLE
ZONE TESTED ~ ft TO
TH#
ft.
TEST HOLE DIAHETER
ft
READING ~t CLOCK TildE NET TIME DEPTH TO NET DROP RATE (min/inl
DATUM
FINAL PERCOLATION RATE
PERFORMED BY ~
MOA 5T83'-024
SQUARE FOOT/BEDROOM
.(min/in)
..( igiiii~k;lll/'ib UL.JIiiIiUU OL)I3U( ~., ...
Nin~'~riM ~- J~nuiro~m~nlal SN~Jics
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE /~
ZONE TESTED L/-,_~ ft TO
ft.
TH ~ W- TEST HOLE DIAHETER ~//
READING ~/ CLOCK TIME NET TIME DEPTH TO NET DROP 'RATE (min/in)
FINAL PERCOLATION RATE ~_~.,
~ ~0 SQUARE FOOT/BEDROOM
PERFORMED BY
HOA ST8~-024
(min/in)
276-1361
.( 'il~Ulilltcllir\b bUi~ii~i, JL, 0~1;i..b,..., .... .
~inr¢rin~ {, ~nuironmtnlo] Studi~s
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
ZIP CODE
LE~,L LOgAT'[ON A/Ol~'f~oo~/~'
TOTAL DEPTH OF HOLE
ZONE TESTED ~ ft TO ~ ft
TH ~ ~ TEST HOLE DIAMETER ~ //
READING ~t CLOCK TIME NET TIME DEPTH TO I NET DROP RATE (rain/in)
flrS '~ oa ~X DATUM
FINAL PERCOLATION RATE
PERFORMED BY
MOA ST8~-024
SQUARE FOOT/BEDROOM
(min/in)
99503 · {907) 2764361
AL¢,~,,, ~,( ;4UIIIIIbiliAL CUIIii4UL $EI~U,~u,~, ,,,u.
~t~intcrin~ F~ Environmtnld $luc~its
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
ZIP CODE
TOTAL DEPTH OF HOLE /J
ZO,E TESTED ~ 'n: To
L/L. j~ ft
TH # ~ TEST HOLE DIAMETER
I/
READING ~ CLOCK TINE NET TINE DEPTH TO NET DROP RATE (min/in)
FINAL PERCOLATION RATE
PERFORMED BY
MOA ST83-024
SQUARE FOOT/BEDRODH
(min/in)
~xlint~rin~1 ~, ~nuironm~l~l
PERCOLATION TEST DATA SHEET
CLIENT -~ ~n::: DATE
ADDRESS
Z]P CODE
LEaL LOCATION.:O
TOTAL DEPTH OF HOLE
ZONE TESTED 3,~
TH # -~
ft.
ft TO ~' -~
TEST HOLE DIAMETER
ft
READING ~ CLOCK TIME NET TINE DEPTH TO NET DROP RATE (rain/in)
FINAL PERCOLATION RATE c4~
SQUARE FOOT/BEDROOM
P£RFORMED BY__~ Cq ~ n
MOA ST8)~024
.(min/in)
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
D^TE /2- 2 ?-~2
Z1 P CODE
LEGAL LOCATION A/Or*~A==O].<.
TOTAL DEPTH Or .OLE /$
ZOnE ~ESTED ~ ~ ~0
ft.
-~" -~' ft
TH # ~ TEST HOLE DIAHETER L~-
READING ~ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
~/--'~_~o ~/~ _. DATUM
-/. I~ o ¥ .' ~ Z - o,z;o
FINAL PERCOLATION RATE
SQUARE FOOT/BEDROOM
PERFORMED 8Y
MOA ST83-024
.(min/in)
ALA,,,,,, ~,(.. iI4UIIIilbili&L CUIIIROL bEl4b~u~.~, ,,,~..
~Mint~rin({ 6 6nuironm~nlel Studies
PERCOLATION TEST DATA SHEET
CLIENT .~/~m.?.~7~ DATE
ADDRESS
ZIP CODE
TOTAL DEPTH OF HOLE
ZONE TESTED ~C'..~
TH~/ ff
ft TO ~,._~' ft
TEST HOLE DIAMETER ~ //
READING ~/ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
I I1,'~_~ ZO /, ~ 3 O,/5
~ H ~ ~ / I,'~ . I. ~ ~ '
FINAL PERCOLATION RATE ~ / ;.-~
~ ~ ~) SQUARE FOOT/BEDROOM
PERFORMED BY ~7~¢~<
MOA 5T83-024
.(min/in)
~n~intcrinc~ ~, ~nuironm~nlal $1~gid,
PERCOLATION TEST DATA SHEET
ADDRESS
DATE
ZIP CODE
TOTAL DEPTH OF HOLE /6 fl:o
ZONE TESTED ~/-. _S- ft TO -~ ~ ft
TH # : ¢ TEST HOLE DIAHETER
READING # CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
I I/,':¢ 1¢ O, ¢ I O,
~.Hz.O Iz:oo -- I, 9?
~ IZ;zO 20 O,E¢
~HzO_ /z;ZO -- /,gR -- '
PERFOR~Eb ~Y
MOA ST83-024
(min/in}
PERCOLATION TEST DATA SHEET
f/
CLIENT _~ k~Qq_~ DATE
_/J
ADDRESS
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE
ZONE TESTED L~
ft TO -~ ft
TEST HOLE DIAMETER
READING ¢/ CLOCK TIHE NET TIME DEPTH TO NET DROP RATE (rain/in)
FINAL PERCOLATION RATE
PERFORMED BY
MOA ST~3-024
SQUARE FOOT/BEDROOM
(min/in)
~lin~mM 6 I~nuironm~nlal SNcli~s
ADDRESS
PERCOLATION TEST DATA SHEET
DATE /Z ~ ~E~- ~.~
ZIP CODE
LEaL ,OCAT~ON
TOTAL DEPTH OF HOLE
ZONE TESTED ..~.-~'
TH~ /Z
ft.
TEST HOLE DIAMETER
ft
READING # CLOCK TINE NET TIME DEPTH TO NET DROP RATE (min/in)
FINAL PERCOLATION RATE
PERFORMED BY
MOA ST83-0~4
SQUARE ~oo~/~EO~OO,
.(min/in)
~n~int~ri~ ~ (~nuironm~nlol Stdi~s
ADDRESS
PERCOLATION TEST DATA SltEET
Z]P CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE LTt. ~
ZONE TESTED 3--~'
ft.
TEST HOLE DIAMETER
ft
-7,//
READING ~ CLOCK TIME flET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
I IO,'_¢_¢ zO I,~ ~,o~
FINAL PERCOLATION RATE
PERFORMED BY
MOA 5T832024
SQUARE FOOT/BEDROOM
[min/in)
/tL~i.~,,,, ~.,,("iUlilliciliAb tUilIliUL, bbi~,,~ c..,
P-~linttrinq ~, J~nuironmtnloJ Studies
CLIENT
uj
ADDRESS
PERCOLATION TEST DATA SHEET
DATE
Z]P CODE
LEGAL LOCATION /J~/O/~ ~'/~OO:~'
TOTAL DEPTH OF' HOLE }3
ZONE TEST.ED Z~, ~ ft TO
ft.
TEST HOLE DIAMETER
ft
READING ~ CLOCK TIHE NET TIME DEPTH TO I NET DROP TE (min/in)
DATUM
FINAL PERCOLATION RATE
~ ~'-9~ SQUARE FOOT/BEDROOM
PERFORMED BY
MOA ST83102~
(min/in)
ALt',...,,,, .v,( F~Uiiilicliii'ib LUililiUL ,~Uific,,.,,..,.,, ,,,~,.
~in¢lrin~ G ~nuironm~nlo[ Stuc)i~s
PERCOLATION TEST DATA SHEET
CLIENT 5 A,/cF ¢C¢ DATE
ADDRESS
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE
ZONE TESTED
TH ~ /5
TEST HOLE DIAMETER
READING ~ CLOCK TIME NET DEPTH TO NET DROP RATE (min/in)
DATUM
, ..-,.. /,O:
+ H=o /z,~
+t/zo 2117 -- 0.¢~
~ z ,' 2_7 I0 o, Cb
__/' z ,'ET ZO 0,~7/ O. ~_~ ,
g 2;0'7 2_0 0,¢'~ o,o_~
FINAL PERCOLATION RATE
PERFORMED BY
MOA STB'3-D24
SQUA,E FOOT/~EO~OOM
,(min/in)
~LA~. ,..,,( iUliill~lilAL 6UIIIItUL "~' -.
~in¢~rinci ~, 6nuironm~nlo[
PERCOLATION TEST DATA SHEET
6LIENT J km ~7_¢ DATE
ADDRESS
CODE
LEaL LOCATION
TOTAL DEPTH OF HOLE
ZONE TESTED
TH ~ /~
ft TO
TEST HOLE DIAMETER
READING ¢/ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
I ZY~O ZO I,I0 0,30
FINAL PERCOLATION RATE ~ ~., "~
/"7'-~ SQUARE FOOT/BEDROOM
PERFORMED BY
MOA ST8)-~24
(min/in)
/.iS,,v,,, ¢"tJIHUiiiiiblli/qL CUilIHUL
6talin.tin0 6 ~nuironrncnio)
PERCOLATION TEST DATA SHEET
CLIENT -~/~::5' DATE
ADDRESS
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE /-~ ft,
ZONE TESTED L-/L ft TO ~-~ ft
TH # J7 TEST HOLE D;IAMETER
READING ¢ CLOCK TIHE HET TIME DEPTH TO NET DROP [RATE (rain/in)
DATUM
E 9: mc zo /, ~ 0, o~
FINAL PERCOLATION RATE
PERFORMED BY
MOA ST85-024
G/.T
SQUARE FOOT/BEDROOM
(min/in)
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
Z! P CODE
ZONE TESTED ~L
ft TO ~
TEST HOLE DIAMETER
ft
//
READING ¢/ CLOCK TINE fiET TIMEI DEPTH TO NET DROP RATE (rain/in)
DATUM
~L PERCO~T~O, ~TE 5g"
.~ /.~ SQUARE FOOT/BEDROOM
PERFORMED BY
MOA ST8~-024
S-/.,.~-./ 29/
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
PERCOLATION
?EST
P ER FORI:vIED FOR:
LEOAL O~SCRIPT,ON'.__L~,
1
ORGANIC ~L~ (OL)
2
a~vv ~avr-uu~.
SLOPE
DATE PERFORMED:
77,.//,
SITE PLAN
10
11
12
13
14
15
16
17
18
19
2O
WAS GROUND WATER
S
ENCOUNTERED?
P
E
IF YES, ATWHAT
DEPTN?
Gross Not Doplh lo Net I
Reading Date Time Time Water Drop
's16 8:5~' :5o ~;~, 8 ql~"
8q/d ,, 9:.2~ ,, 9~e" ~"
8%" " "
NO W/~]~_q~
PERCOLATION RATE
TEST RUN BETWEEN
PERFORMED BY:
'~ ~'~/,.V~ .'- 4 '..
"~ ~','% ,'
~,~'~b .',~ ,'~TU ~'.~
CERTIFIEDBY:_~..,..'~
+ ", Ralph B. Jokola ,'
~ CE - 1995
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825, L. Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
[] PERCOLATION
TEST
LEGAL OESCRIPTION:~) ~_/~ .~.
ORGAN IC%
1
2
SI L~FV G'R'AV E L
3
6
8
9
10
51LTY
SLOPE
11
GRAVEL (G
1(3
WAS GROUND WATER
ENCOUNTERED?
SITE PLAN'
s
L
O
P
E
12
13
14
15
10
17
18
19
2O
COMMENTS
PERFORMED BY:
IF YES, AT WHAT
'FIME ~"~D DEPTH?
(S'P)
Reading Date Gross Net Depth to Nat
Time Tirne Water Drop
N0 WATER
TP,%LE
PERCOLATION RATE
-
TEST RUN BETWEEN
ELEV~TIO~ Al
.....
GO 00 I\ ~ ~
ALASKA 61 UlitOI meF1TAL COI TROL $SRUICSS,
Mr. Steve Skaggs
P.O. Box D
Chugiak, Alaska 99567
[nC.
January 3,
Dear Steve:
On December 29, 30 and January 3; I logged preliminary test holes for a
proposed subdivision, called Northwoods Tract C. This subdivision is
located in South Peters Creek. It is bordered on the Wesb s{d~ by
t~t~ml, SO, lg~t~fltf~t, t~; [,i~ hord,~r~d on the North at~d ~oul:h sides by muskeg
valleys.
Land forms
This subdivision is located on a ridge lying East-West ~ich is about
1/3 mile wide. The gently sloping top the ridge is 80 to 100 feet above
the valley bottoms. The ridge falls steeply to the Southern valley.
The side of tile ridge slopes about 15% toward the Northern Valley, then
drops 25 feet to the valley bottom.
Vegetation
The ridge is predominately poplar, birch, and alder, with scattered
spruce and devils club. The sloping ridge sides contain a greater
percentage of spruce. The valley bottoms are primarily black spruce and
alder with large patches of muskeg.
Soils
The test holes were dug by a backhoe. Ail testholes were terminated at
16 feet, or by water, or extremely dense soils. Percolation tests were
run on the same day the testhole was logged. The location of the test
holes are shown on the attached map. These locations are approximate.
They must be accurately located if the percolation tests are used for
septic systems. A green color indicates an unadjusted soil rating less
than 200 sqft/bedroom. A yellow color indicates soils between 200 and
350. A red color indicates soils which is unacceptable for septic
systems. A blue color indicates a high water table, within 6 feet of
ground level.
The top 1 to 2 foot of tile soils horizon is decayed organic material.
The next 2 to 4 feet of soils is a sandy gravel in some test boles, a
silty gravel in others. A silty gravel extends down to the bottom of
all the test holes. It often becomes denser as the depth increases.
many test holes there were seeps at 9 to 10 feet.
Type of On-Site Systems
Due to the presence of better soils near ground level, and a high water
table in some test holes; I recommend that shallow septic systems'be
installed. Where there are layers of sandy gravel the depth 'of! the bed
or shallow trench should be near the top of the layer. In no case
PERFORMED FOR:
LEGAL DESCRIPTION:
1
2
,3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
MUNICIPALITY OF ANCHORAGE
DEPAR'rMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L. Street, Anchorage, Alaska 99501 264-4?20
SOILS LOG - PERCOLATION TEST
SLOPE
C)RGANI~
o~Gr~NIC SlL-r UDL)
SI L-F ¥ GRAVELL'~
F:S? I
FINE
WAS GROUND WATER
ENCOUNTERED?
PERCOLATION
TEST
SITE PLAN
IF YES, AT WHAT
DEPTI4?
Gross Net Depth to Net
ReadingDate Time Time Water Drop
~IL~ 8:50 ' L~D m;,~, / ~ '~,"
'"" " 9: / %"
Il ',~ 20 " 18"
)1%",'/O;2o,, /z 3/~,, i ~,~,,
I1'~/~" " iO :50 " /2 ~',1" /
NQ W~TER
-FABLE
II %# ~ I'' ~ ~ ,~ , _ ~ I ,2. "/~," / ~:s "
PERCOLATION RATE .~ ,~inutes/inch) ' -.
TEST RUN
BETWEEN
N ~-~-
., '. CE-1995 .'...'. ~
ALASKA I vlROFlmSnTAL COFITROL SeRo,C6$, IFIL
Mr. Steve Skaggs
P.O. Box D
Chugiak, Alaska 99567
Dear Steve:
January 3, 1~~ .... '~
On December 29, 30 and January 3; I logged preliminary test holes for a
proposed subdivision, called Northwoods Tract C. This subdivision is
located in South Peters Creek. It is bordered on the West side by
Sampson Estates. It is bordered on the North and South sides by muskeg
valleys.
Landforms
This subdivision is located on a ridge lying East-West which is about
1/3 mile wide. The gently sloping top the ridge is 80 to 100 feet above
the valley bottoms. The ridge falls steeply to the Southern valley.
The side of the ridge slopes about 15% toward the Northern Valley, then
drops 25 feet to the valley bottom.
Vegetation
The ridge is predominately poplar, birch, and alder, with scattered
spruce and devils club. The sloping ridge sides contain a greater
percentage of spruce. The valley bottoms are primarily black spruce and
alder with large patches of muskeg.
Soils
The test holes were dug by a backhoe. Ail testholes were terminated at
16 feet, or by water, or extremely dense soils. Percolation tests were
run on the same day the testhole was logged. The location of the test
holes are shown on the attached map. These locations are approximate.
They must be accurately located if the percolation tests are used for
septic systems. A green color indicates an unadjusted soil rating less
than 200 sqft/bedroom. A yellow color indicates soils between 200 and
350. A red color indicates soils which is unacceptable for septic
systems. A blue color indicates a high water table, within 6 feet of
ground level.
The top 1 to 2 foot of the soils horizon is decayed organic material.
The next 2 to 4 feet of soils is a sandy gravel in some test holes, a
silty gravel in others. A silty gravel extends down to the bottom of
all the test holes. It often becomes denser as the depth increases.
many test holes there were seeps at 9 to 10 feet.
In
Type of On-Site Systems
Due to the presence of better soils near ground level, and a high water
table in some test holes; I recommend that shallow septic systems be
installed. Where there are layers of sandy gravel the depth of the bed
or shallow trench should be near the top of the layer. In no case
1200 LU~sl 33rd Auenu¢, 5uile B · Amhoreqc Alas~,o 99503 · (907/276-1361
should the depth of a septic system exceed 5 feet.
Conclusion
It would appear that the subdivision is developable. I believe
additional soils tests near 3j 7, and 12, may be necessary if lot sizes
are less than 2 acres. I highly recommend a large lot size allowing the
placement of two or more complete septic systems. I also believe that
percolation tests below 200 should be approached with caution. The good
soil in these areas may only extend for a short distance around the test
hole.
Sincerely,
Jim Green
civil Engineer
Approved by:
Addendum: Water Table monitoring is in progress as per Municipality of
Anchorage, Department of Health and Environmental Protection handout;
I.B.9., dated 5/5/83. Specifically monitoring of ground water table
once a month until June 1, 1984.
ALASKA tI1UIBODmEDTAL CONTROL SEgU!CES, IDC.
~n§lneerinq 6 ~nuironmcnlol SDUdl~S
Supplemental Soils Information.
Subdivision ~VOETN.WO0~ /~Jj. Block 'T~&cJF ~-~
LOT
I'H I
LOT LOT
TH ~. TH3
3 ~y 3
4 4
7 ~F& 7
8 8 8
9
11
11 11
12 12 12
13 13 13
14 - 14 14
15 15 15
16 16 16
17 17 17
18 18 18
19 19 19
20 20 20,
LOT
THN
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1200 t]Jcst 33r(] Au~,u~. Suil¢ B · A,&,oq~. Alosk 99503 * [907) 276-136] ' '
ALASKA dlqUIgOlqmEl TAL COr TiROL
Supplemental Soils Information.
Subdivision ~ORl"~-~Oob,~ A~¢. Block ~AdT
LOT
TH5
1
2
3
4
5
6
7
9
11
12
13
14
15
18
17
18
19
20
LOT
THW
4
~/~r~6
11
12
13
14
15-
16--
17
18
19
20
LOT LOT
TH'~ THE
2 .~ I~ 2
6 6
7 7
8 8
9 9
5¢~ 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20
ALSOFt,, 6hUIR0hm61qTAL COIqTROL ocRUl?.,b, IIIC.
~nqmm'in(~ $ ~nuiron~nlal $1u~ics
Supp.lementa]. Soils Information.
Subdivision /~®I~TRWOOb,~ Abb, Block ""T'~,~T (~-I
LOT
TH~
1
2
3
4
6
7
8
g
10
11
12
13
14
15
16
17
18
19
20
LOT LOT
TH ~ TH/I
3 3
8 8
g g
10 10
11 11
12 12
13
14 - 14
15
16 16
17 17
18 18
19 19
20-
LOT
THI?_
3
5
~t~b
11
12
13
14
15
16
17
18
19
ALASKA EF UIROFImEIqTAL COF1TROL SERUIC. ES, IFIC.
~n~lne~'rincI $ ~nuironm~nlol Slu~l~$
Supplemental Soils InformaLion.
Subdivision ~(~-~/E20~-~ 4~K, BIock--~/~/Ji~'-F' ~-i
LOT
T H
LOT LOT
I~ TH /W TH
~ ~,'1~7 5 r~ w I~ 2
3 3 3
5 5 5
6 6 6
7 7 7
8 8 8
g 9 g
10 10 10
11 11 11
12 12 12
13 13 13
14 14 14
15 15- 15
16 16 16
17 17
lB 18 18
lg- lg lg
20- 20 20,
LOT
TH
ALASKA F1UIROnm I TAL COI TROL SEI IJ CCS, linC.
~;~qme~nnq ~ ~mro~menlol Studi~s
Supplemental Soils Information.
Subdivision A~O~'H~A/OO.b.~ 4/~/, Block -~AC~"' ~'J
LOT
TH
1
2
3
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
~,o 9
10
LOT LOT LOT
TH J~ TH /c~
4 4
7 7 7
8 8 8
9-~ 9
10 - 10
11 11
12 12 12
13 13 13
14 14 14
15 15 - 15 -
16 16 - 16 ~
17 - 17 17
18 18 18
19 19 - 19
20 20 20,
1200 UJ~sl 33r(] Aucnu¢, 5ui1¢ B · Ancl~ota(l~. Aloska 99503 · (907) 276-1361
~.miineerh~1 t~ t~nuironmenlal
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
DATE /~- Zg- ~.~
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE
ZONE TESTED
TH ~ ~
TEST HOLE DIAMETER
· ,~, DATUM
FINAL PERCOLATION RATE L~ ~., 7
~. ~0 SQUARE FOOT/BEDROOM
PERFORMED BY_.__~ ~
MOA ST83~O2Z~
_. (m/n/in)
276.1361 "
~in~¢rin(j ~, ~nuironmrntol
ADDRESS
PERCOLATION TEST DATA SHEET
Z! P CODE
LEGAL LOCATION :OF-~t,~/O0:~'
TOTAL DEPTH OF ttOLE= /~
ZONE TESTED ~-, S
TH# ~
ft.
TO -~,~'
TEST HOLE DIAMETER
READING .~ ! CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
DATU.
+H~O 2,'~£ ~- O,Z£ ~
I z ~ I0 0,~ O, 06
Z ~:0~ I0 0,~I 0,0~
: H~O ~; /0 ~ ~,~ I ~
~ ~,~ ~0 /0 0,~ 0,0~ ,
FINAL PERCOLATION PATE ~.'~' (min/tn)
2 ..~0 SQUARE FOOT/BEDROOM
PERFORMED BY
...... 'g% .....
MOA ST8~024 ~;,~
1330 ~$I 33N Ru~nu~ ~,,~,.,~,, A~'l~o~c~i,, Alaska 99503 · [907) 276.1361
~in~rincI G ~nuironmtn~ol
PERCOLATION TEST DATA SHEET
CLIENT -~/FK],~.Y DATE /Z- 7_~7- ~3
ADDRESS
ZIP CODE
LEGAL LOCATION NOI~VOOY~'
TOTAL DEPTH OF HOLE
ZONE TESTED
TH # 3
ft To
TEST HOLE DIAMETER
ft
READING It CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
pp~c~,~ A~~ DATUM
FINAL PERCOLATION RATE <'~ ~
,------ -. l . ~. _.~' (min/in)
SQUARE FOOT/BEDROOM
PERFORMED BY ~---~Pg~
MOA ST8)'-O2fl
~n~in~riM E, (~nuironmcnlol Studies
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE
ZONE TESTED ~-,_~ ft TO
TH # ~- TEST HOLE DZAMETER 0/I/
READING ~ CLOCK TIME I~ET TIME DEPTH TO NET DROP RATE (min/in)
FINAL PERCOLATION RATE
J 70 SQUARE I'-OOT/BEDROOM
PERFORMED BY
MOA ST8~-024
[min/in)
'tI1UItIIIblilAL bUiill~Ub bbl, ,U~:~, .....
[r~in~,'in~ ~ ~nuironm~nlol
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
DATE /~- Z¢-J~
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE
ZONE TESTED
TH ~ -~
ft.
L/- ~t TO
TEST HOLE DIAMETER
ft
g//
READING ~ CLOCK TIME NET TIMEDEPTH TO NET DROPRATE (min/in)
?r'e o / e2
+ HzO 2 ,' zs ~ O,
~ 2:~Z I0 O, 3~ O, 12
FINAL PERCOLATION RATE
PERFORMED BY
MOA STSJ-024
SQUARE FOOT/BEDROOM
(min/in)
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE
ZONE TESTED
Tit # ~
L~ ft TO 4. J~
TEST HOLE DIAMETER
ft
READING ~ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
FZNAL PERCOLATION P-,ATE L/-. :', 7'
z. ¢0
PERFORMED BY
MOA ST8~-02~
SQUARE FOOT/BEDROOM
(min/in)
~in~'¢rin~ ~ ~nuironmenlal $~u~i~s
ADDRESS
:~ PERCO.LATION TEST DATA SHEET
DATE /'~- ~ '~-- ~'.~
Zl P CODE
TOT^L DEPTH
ZONE TESTED
TH # 7
ft TO
ft.
~L,_~ ft
TEST HOLE DIAMETER ~"//
READING ~/ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (rain/in)
/or~_¢~ ~_~ DATUM
FI'NAL PERCOLATION FUkTE
.._ SQUARE FOOT/BEDROOM
PERFORMED BY .....
MOA ST831024
(min/in)
~inftl'inc~ r., ~nuironmcnlal $ludNs
ADDRESS
PERCOLATION TEST DATA SHEET
ZIP CODE
LEGAL LOCATION /~Orf~V¢O0~<._
TOTAL DEPTH OF HOLE
ZONE TESTED
ft TO
ft,
£, .5 ft
/)
TH # ~ TEST HOLE DIAMETER
READING ¢ CLOCK TIME "ET T~ME DEPTH TO NET DROP RATE <min/in)
I ¢.'5z I0 o. 5¢ o, ol
2 S; 0 Z /0 O, 5 ¢ .-0
FINAL PERCOLATION ltATE .... ¢
~ SQU PgO~T/BEDROOM ,
PERFORMED BY ~-~' ~ P
MOA ST83-024
(min/tn)
ADDRESS
PERCOLATION TEST DATA SHEET
DATE
ZIP CODE
TOTAL DEPT
ZONE TESTED
TH # ~
ft TO
TEST HOLE DIAMETER
ft
~//
READING ~ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
FINAL PERCOLATION RATE
PERFORMED BY
MOA ST~3-024
SQUARE FOOT/BEDROOM
(min/in)
~bi~,~,..,, , JllfiUlllllL;tlttiL UUIIIifiUL bbl',,,~L,c,~, ,,,~,.
~intcrin§ ~ ~nuiro~rn~nl~l $1udi~s
C'-IENT ~/~¢~
ADDRESS
PERCOLATION TEST DATA SHEET
ZIP CODE
LEGAL LOCATION ]~JdF-~
TOTAL DEPTH OF HOLE :~
ZONE TESTED ~/-.._5' ft TO
TH ~ J(~) TEST HOLE DIAMETER ~ //
READING ~/ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
I _/.I,':¢ fS O, ¢ I o. ~q-
~_H,O lz;o0 -- I, 97 .--
z IZ:z~ ~0 O,E~ o.97
~~ Iz: 9~ /o /, I~~, 17 '"
~. L/L.~' SQUARE FOOT/BEDROOM
PERFORMED BY.·~-~. :
MOA ST83-024
.(min/in)
t~t.,/-\,;..,,. ,., ',ltUlllllt,;lllltL t,,UlllitU~ ,..tl;H~ ~Uc, ,,,,...
(~n~in,~rino ~ {~nuironm~nlo[ Stdi~s
PERCOLATION TEST DATA SHEET
CLIENT -~/r4q q~¢ DATE
ADDRESS
Z! P CODE
ZONE TESTED C~ ft TO -~ ft
TH ~ l~ TEST HOLE DIAMETER ¢/ //
READING ¢/ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
_,
-/-/%0 /z .'~z "_ ../,.20
/ t,'Oz IO /,27 0,0~
z I;/3 /0 /.9o
?~ % I,'/3 /, ~ ~ ,"~
FINAL PERCOLATION RATE _ c~ " (min/in)
~ SQUARE FO DR~O~
PERFORMED BY_
MOA ST~-024
~ LB,,, 3:d A.., ~, A~E~o~, Alo,k ~3 · (~7) 276.1361
/qL/i,~,,,, ~,. IHUIIIIIUili/AL CL)IIII~UL 51Si~,,CU,), ,,,~..
~,Mintcrincl ~, J~nuironm~la[ Studks
PERCOLATION TEST DATA SHEET
ADDRESS
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE
ZONE TESTED .~,S
/.F
ft To Lb- ~
TEST HOLE DIAMETER
READING ~ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
-/. J'/~O ~_,'/7 ~ /, Z~ ..---'
I z :27 I0 I, z ~ o, oz
z z '~ zo l.Z~ o, oi
_ --~Z :-.~ ~ ~-~.
FINAL PERCOLATION RATE
' '--' . SQ E FOOT/BE.DJ~O@M
PERFORMED BY
MOA STB3-O~4
ADDRESS
PERCOLATION TEST DATA SHEET
ZIP CODE
LEGAL LOCATION __/VOU-~A WOOd5
TOTAL DEPTH OF HOLE.._ L]_. ~_
ZONE TESTED ~._~' ft TO
ft.
q-. 5
TH ~ /.~ TEST HOLE DIAMETER 7'//
READING f~ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (mtn/in)
DATUM
4 f4~0 /0:25 ~ I, g3 __
I 1o/55 zo 1,5~ 0,05
,,, z Il." 15 zp 'LLz 0, o~
FINAL PERCOLATION RATE. ,,,
"'----'- SQUARE F~O~/BEDRQOM
PERFORMED BY==~/~p.~,
MOA ST83L024
(min/in)
PERCOLATION TEST DATA SHEET
CLIENT ~J~ ¢?qq~< DATE
ADDRESS
ZIP CODE
TOTAL DEPTH OF HOLE /3 ft.
ZONE TESTED 3,~ ft TO ~'-~ ft
READING ~ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
I II; zO z-o /,'¢ I O, Iz
z //;9 z z2 I, ~ O,/2
_.+]%0 /~ .' o3 ~ /, 5~ --
~ /z)'13 /o /,~o o.o~
FINAL PERCOLATION PATE ~.~ ~, L_/L
~ E..~' SQUARE FOOT/BEDROOM
PERFORMED BY.~,,<:~'F'_~?-.~ .............
MOA ST83-024
.(min/in)
flLn~,.,, .., i'iUlllllL;ilt/~i, tUIilHUI. ,~P..l'ik.,,,~;,~, ,,,~..
~lint~rmcl ~, I~nuironm~tal
PERCOLATION TEST DATA SHEET
CLIENT '~ kd'9 q~' DATE
ADDRESS
ZIP CODE
TOTAL DEPTH OF HOLE /~ .... ft.
ZONE TESTED ~ ft TO ~ ft
READING ~/ CLOCK; NET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
+/gz.O 2/17 0, ?~
___,.F Z ,'fi7 ZO 0,9/ O, 0.9 ,
FINAL PERCOLATION RATE
~ i.~ SQUARE FOOT/BEDROOM
PERFDRMED BY ~-~ t'~d:~,
MOA ST8'3-024
(min/in)
ADDRESS
PERCOLATION TEST DATA SHEET
DATE
ZIP CODE
LEGAL LOCATION
TOTAL DEPTH OF HOLE
ZONE TESTED
T~ ~ /g
ft TO L~_ ft
TEST HOLE DIAMETER -/ II
READING ~ CLOCK TIME lET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
I z ;q-o zo I, I0 42,30
z B ,' o2 zm I, I~
FIlL P -RCO T ON RATE _..
I¥.-¢ SOUARE rOOT/BEDROOM
PERFORMED BY ~----~"'~/q
MOA ST83-024
, (min/tn)
PERCOLATION TEST DATA SHEET
ADDRESS
ZZP CODE
DATE 1~2-¢L/-
TOTAL DEPTH OF HOLE ............ /~ .... ft.
ZONE TESTED ~' f~ TO ~
TH ~ /7 TEST HOLE DIAMETER
READING ¢/ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
z 3; m9 ..... zo I, ~ o,o$
FINAL PERCOLATION PATE
2 ¢~) SQUARE FOOT/BEDROOM
PERFORMED BY
MOA ST83-D24
(min/in)
"'%UilIIil,;I iltU. I,,UI iiI'~UL
~,~imri~c~ r¢ ~nuironm~nlo[ Sludi~
CLIENT
ADDRESS
PERCOLATION TEST DATA SHEET
Z! P CODE
LER-.C,L LOCATION ~/¢~-/'1 WO¢~,~
ZONE TESTED
TEST HOLE DIAMETER
ft
READING ~ CLOCK TIME NET TIME DEPTH TO NET DROP RATE (min/in)
DATUM
z, ck,' lO zof l~Z
3 ~ ,. zo ..... / o I, ~Yo, os
_~ ¢..~o i0 I,~1 0.09 ,
~ .. ~,,~0 /o /. ~o0, oz
~ /.~Z" SQUARE FOOT/BEDROOM
PERFDRMED BY ~r~ ah
MOA STB~-024
S'/.~.c / 22/