HomeMy WebLinkAboutSULLIVAN ACRES S12417Onsite File
LAMPERT ESTATES TR B1A
Soils Report
Engineer's Soils Report
LAMPERT ESTATES TR 131A
s")z917
Municipality of Anchorage
Prepared for:
Cole Sullivan
PO BOX 670272
Chugiak, AK 99567
Prepared By:
Pannone Engineering Services, LLC
P.O. Box 100217
Anchorage, AK 99510
Submitted By:
Steven R. Pannone, P.E.
Principal, Civil Engineer
3 October 2018
LAMPERT ESTATES TR B1A
Soils Report
Engineering Report
Project Description
This soils report is to identify the suitability of the soils on the proposed lots for an on-site septic
system on each individual lot. The subject lots are for the proposed subdivision of LAMPERT ESTATES TR
61A. This report will detail the soils encountered during the soils investigation, existing topography,
impact to surrounding wells and septic system and the suitability of the soils encountered for the use of
an on-site wastewater disposal system and water supply system. The lots range from approximately
0.89 acres to 1.65 acres in size. With the exception of the existing SFD, septic system and well on
proposed Lot 5 the proposed lots are currently undeveloped.
Soils Investigation
Pannone Engineering Services performed a soils investigation on January 16, 2018 throughout the
proposed subdivision. The test pits were excavated by the homeowner and were excavated to the
maximum extent of the excavator or until refusal. The test pits revealed a variety of soils as shown on
the attached Soils Logs for each of the proposed subdivision lots.
Topography
The lot is characterized by generally level topography on the Northeastern half of the lots. In general
the entire property starts sloping down after the grade break to the Southwest (see attached subdivision
site plan).
Existing water and wastewater systems
The lots are currently undeveloped with the exception of proposed Lot 5. There are developed lots
along the south and west of the lots. The existing water supply systems are private wells and have a 100 -
foot protective radius around them (i.e. a new wastewater disposal system may not be located less than
100 feet from these private water wells.) The documented wells are far enough back on the lot that
their protective well radiuses do not affect the proposed subdivision lots.
Surface water
There are no major bodies of surface water within 200 feet of the proposed septic areas. There are
ephemeral drainage ditches along the existing road (Oberg Road) and in other areas of the property.
Engineering Criteria
The soils in this area are typically Hydrologic Soils Group A which contains organics generally underlain
by gravel and sand. PES conducted four percolation tests on the proposed lots and found a percolation
rate varying from one minute per inch (1.Ompi) to nine and one tenth minute per inch (9.1mpi). The soil
composition and percolation rate confirms the soil classification of HSG A.
Based upon the soil test results there are several options for systems that could be installed on all of the
lots. There are no steep areas within the respective reserve areas.
The table below has the test hole depths, percolation rates and depth to ground water on each
perspective lot in the subdivision.
LAMPERT ESTATES TR B1A
Soils Report
LOT
TH N
TH DEPTH
PERC RATE
GROUND H2O
LEVEL
REQUIRED RES AREA
1
TH1/TH1A
15.0/15.0
3.0/1.0
NO/14.0
10000.0
2
TH2
15.0
2.1
NO
10000.0
3
TH3
11.0
9.1
6.0
12000.0
4
TH4
10.0
5.0
9.5
10000.0
Site Information
The Municipality of Anchorage (Moa) Regulations (15.65) govern for single-family homes. These
regulations require a minimum of four (4) feet vertical separation between the bottom of a soil
absorption system and ground water for a conventional wastewater disposal system, six feet (6') to
bedrock or other impermeable layers (tight silts and clays) and must be located greater than 100 feet
horizontally from any surface water (Creeks and ponds). Additionally, the accepting soils must have a
percolation rate of less than 120 minutes per inch. A lot must have room for a primary and reserve soil
absorption system.
Water Availability
There is availability for private water system on the lots. A survey of the well data from the surrounding
lots is provided on the table below. Data shows ample water availability in the lots surrounding the
above referenced lot.
Legal Description
Well Depth
Well Production
Static Water
Level
TEST DATE
RESULTS
(NITRATE)
LAMPERT EST B1 L7
182'
20gpm
156'
T15NR1WS9L57
250'
4.Ogpm
102'
2006
O.Omg/L
T15NR1WS9L39A
169'
10gpm
147'
LAMPERT EST B1 L6
182'
5.3gpm
165'
2005
3.3mg/L
LAMPERT EST 131 L4
157'
4.2gpm
162'
1995
0.18mg/L
SOILS LOG — PERCOLATION TEST
SLOPE
TEST
HOLE
PLAN \
10,000SF \ \
RESERVE AREA
/ 40.01 SF
THIA
TH
SLOPE
TH 1
WAS GROUND WATER SOIL TEST RESULTS /ANALYSIS
ENCOUNTERED? N . PERCOLATION RATE 3.0 (min/inch)
(Hydrologic Soils Group: HSG A)
IF YES, AT WHAT C PERC HOLE DIAMETER 6"
DEPTH? —NA— . TEST RUN BETWEEN 4 FT AND 5 FT.
TEST RUN FOR OVER AN HOUR, LAST
DEPTH TO WATER AFTER THREE READINGS PROVIDED.
MONITORING? — DRY —
DATE: 23JAN2018
01OCT2018
COMMENTS: Test hole excavated by SULLIVAN WATER WELLS
PERFORMED BY: Joseph Lawendowski. I CERTIFY THAT THIS TEST
WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND
MUNICIPAL GUIDLINES IN EFFECT ON THE DATE OF THIS TEST.
READING
TEST HOLE 1
WATER
LEVEL
READING
NET DROP
OR
TOPSOIL
1
5.880"
ML
ORANGE
2
10 MIN
9.475"
SILTY SAND
3
3
5.880"
4
4
10 MIN
9.215"
3.335"
5
5
5.880"
6
6
10 MIN
9.202"
3.322"
7
8
SM
Silty SAND
9
10
11
12
13
14
15
BOH
DATE
PERFORMED: 16JAN18
NO
H2O: 16JAN18
01OCT18
SOILS LOG — PERCOLATION TEST
SLOPE
TEST
HOLE
PLAN \
10,000SF \ \
RESERVE AREA
/ 40.01 SF
THIA
TH
SLOPE
TH 1
WAS GROUND WATER SOIL TEST RESULTS /ANALYSIS
ENCOUNTERED? N . PERCOLATION RATE 3.0 (min/inch)
(Hydrologic Soils Group: HSG A)
IF YES, AT WHAT C PERC HOLE DIAMETER 6"
DEPTH? —NA— . TEST RUN BETWEEN 4 FT AND 5 FT.
TEST RUN FOR OVER AN HOUR, LAST
DEPTH TO WATER AFTER THREE READINGS PROVIDED.
MONITORING? — DRY —
DATE: 23JAN2018
01OCT2018
COMMENTS: Test hole excavated by SULLIVAN WATER WELLS
PERFORMED BY: Joseph Lawendowski. I CERTIFY THAT THIS TEST
WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND
MUNICIPAL GUIDLINES IN EFFECT ON THE DATE OF THIS TEST.
READING
DATE NET TIME
WATER
LEVEL
READING
NET DROP
RATE
(MPI)
1
16JAN18
5.880"
2
10 MIN
9.475"
3.595"
2.8
3
5.880"
4
10 MIN
9.215"
3.335"
3.0
5
5.880"
6
10 MIN
9.202"
3.322"
3.0
NOTES: PANNONE ENG SVC LLC Dote
SOILS REPORT P.O. BOX 102954 ANCHORAGE, AK 99510 02/06/2018
PHONE (907) 272-8218 FAX (907) 272-8211'••• Scale
'�;• NTS
LAMPERT ESTATES TR B1 A •"' •' • '• P
SITE: 20914 OBERG ROAD ••t}®Y'e*n* •A, PannoRe 051-102-67
DRAWN JRL COLE & DIANE SULLIVAN CE 8149 PERMIT N0.
PO BOX 670272 r v1:1o/03/201 OSPxxxxxx
SOILS LOGS CHUGIAK, AK 99567 Sheet
1 OF 4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
TEST HOLE 1A
BOH
DATE PERFORMED: 16JAN18
8
8
SOILS LOG - PERCOLATION TEST
SLOPE
TEST
HOLE
SITE PLAN \
40.0 SF
/ HtA
5.5 /
I � \
/ H i \
I •
\
I O.000SF
RESERVE AREA
r
40,052
WAS GROUND WATER
ENCOUNTERED? N
IF YES, AT WHAT
DEPTH? -NA-
DEPTH TO WATER AFTER
MONITORING? - 14.0' / 14.5' -
DATE: 23JAN2018 / 010CT2018
COMMENTS: Test hole excavated by SULLIVAN WATER WELLS
PERFORMED BY: Joseph Lawendowski. I CERTIFY THAT THIS TEST
WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND
MUNICIPAL GUIDLINES IN EFFECT ON THE DATE OF THIS TEST.
I NOTES:
I SOILS REPORT
DRAWN I JRL
SOILS LOGS
SLOPE
TH 1
SOIL TEST RESULTS/ANALYSIS
• PERCOLATION RATE 1.0 (min/inch)
(Hydrologic Soils Group: HSG A)
• PERC HOLE DIAMETER 6"
• TEST RUN BETWEEN _LFT AND 5 FT.
• TEST RUN FOR OVER AN HOUR, LAST
THREE READINGS PROVIDED.
READING
DATE NET TIME
WATER
LEVEL
READING
NET DROP
RATE
(MPI)
1
16JAN18
5.880"
••� �V8i1 .•f5a�fll?W8
051-102-67
2
5.3 MIN
11.880"
6"
0.9
3
5.880"
4
6 MIN
11.880"
6"
1.0
5
5.880"
6
6 MIN
11.880"
6"
t.0
PANN®NE ENG SVC, LLC
P.O. BOX 102954 ANCHORAGE, AK 99510
PHONE (907) 272-8218 FAX (907) 272-8211
LAMPERT ESTATES TR 131A
SITE: 20914 OBERG ROAD
COLE & DIANE SULLIVAN
PO BOX 670272
CHUGIAK, AK 99567
Date
02/06/2018
�•,. ••
Scale
NTS
.. .. .. ... ...
PJLDD NO
••� �V8i1 .•f5a�fll?W8
051-102-67
'
PERMIT N0.
REv1�10 01 201
OSPxxxxxx
'••••
Sheet
2OF4
TEST HOLE 2
1
2
3-
4-
5-
6-
7-
8—
45678 GM Silty SAND
& GRAVEL
9
10
11
12 10/01/18
13
14 O1 23/18
15
BOH
DATE PERFORMED: 05JUN18
SOILS LOG — PERCOLATION TEST
SLOPE
TEST
HOLE
SITE PLAN \ \ \ \
/ I
/
/
40.01 SF
TH1A
TH
I0.000SF
RESERVE AREA
— — 40,062/ /
WAS GROUND WATER
ENCOUNTERED? N
IF YES, AT WHAT
DEPTH? —NA—
DEPTH TO WATER AFTER
MONITORING? — 14.0' / 12.0'—
DATE: 23JAN2018 / 01OCT2018
COMMENTS: Test hole excavated by SULLIVAN WATER WELLS
PERFORMED BY: Joseph Lawendowski. I CERTIFY THAT THIS TEST
WAS PERFORMED IN ACCORDANCE WITH ALLSTATE AND
MUNICIPAL GUIDLINES IN EFFECT ON THE DATE OF THIS TEST.
L NOTES:
I SOILS REPORT
DRAWN JRL
SOILS LOGS
SLOPE
TH 1
SOIL TEST RESULTS/ANALYSIS
• PERCOLATION RATE 2.1 (min/inch)
(Hydrologic Soils Group: HSG A)
• PERC HOLE DIAMETER 6"
• TEST RUN BETWEEN 4 FT AND 5 FT.
• TEST RUN FOR OVER AN HOUR, LAST
THREE READINGS PROVIDED.
READING DATE
NET TIME
WATER
LEVEL
READING
NET DROP
RATE
(MPI)
1 05JUN18
.. ..
5.900"
• }8
051-102-67
2
10.0 MIN
11.432"
5.53"
1.8
3
5.900"
4
10.0 MIN
10.691"
4.79"
2.1
5
5.900"
6
10.0 MIN
10.662"
4.76"
2.1
PANNONE ENG SVC, LLC
P.O. BOX 102954 ANCHORAGE, AK 99510
PHONE (907) 272-8218 FAX (907) 272-8211
LAMPERT ESTATES TR B1A
SITE:20914 OBERG ROAD
COLE & DIANE SULLIVAN
PO BOX 670272
CHUGIAK, AK 99567
•
Dote
06/12/2018
►�••••••
Scale
•49
NTS
.. ..
0
• }8
051-102-67
((±±�� ' annom®
v 111 0;S'
PERMIT N0.
OSPxxxxxx
'••••
Sheet
2 OF 4
TEST HOLE 3
OR --7 TOPSOIL
SOILS LOG — PERCOLATION TEST
SLOPE
1
2
3 Silty SAND &
GRAVEL
4-
5—
5 SM/GM
10/o1/1s
6 1 23/18
TEST
7 HOLE
8
9
10
11 S7 OS 16/18
BOH
DATE PERFORMED: 16JAN18
\ 9ITE P1;�e
/ \ TH
FF=330.5 \
\
12,000SF
RESERVE AREA
/ 72,103 SF
JFF=335.5 — —
\ / , 335
\ \ — 330
SLOPE
TH 1
WAS GROUND WATER
ENCOUNTERED? Y
IF YES, AT WHAT
DEPTH?
DEPTH TO TO WATER AFTER
MONITORING? - 6.0' 5.5' -
DATE: 23JAN2018 / 01OCT18
COMMENTS: Test hole excavated by SULLIVAN WATER WELLS
PERFORMED BY: Joseph Lawendowski. I CERTIFY THAT THIS TEST
WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND
MUNICIPAL GUIDLINES IN EFFECT ON THE DATE OF THIS TEST.
SOIL TEST RESULTS/ANALYSIS
• PERCOLATION RATE 9.1 (min/inch)
(Hydrologic Soils Group: HSG A)
• PERC HOLE DIAMETER 6"
• TEST RUN BETWEEN 4 FT AND 5 FT.
• TEST RUN FOR OVER AN HOUR, LAST
THREE READINGS PROVIDED.
READING
DATE NET TIME
WATER
LEVEL
READING
NET DROP
RATE
(MPI}
1
16JAN18
5.880"
2
10 MIN
7.335"
1.455"
6.9
3
5.880"
4
10 MIN
6.985"
1.105"
9.1
5
5.880"
6
10 MIN
1 6.985"
1.105"
9.1
NOTES: PANNONE ENG SVC, w, LLC Dote
SOILS REPORT P.O. BOX 102954 ANCHORAGE, AK 9951002/06/2018
PHONE (907) 272-8218 FAX (907) 272-8211 ••• Scale
•' NTS
LAMPERT ESTATES TR 131A "" '• ••• P.I.D. NO
SITE: 20914 OBERG ROAD051-102-67
"�everi't�.'F�aniioRe' PERMIT N0.
DRAWN JRL COLE & DIANE SULLIVAN '•.REvCE 8o4�q�� ospxxxxxx
PO BOX 670272 Sheet
SOILS LOGS CHUGIAK, AK 99567
3 OF 4
TEST HOLE 4
OR TOPSOIL
7
2
3
4
5 SM/GM Silty SAND &
GRAVEL
6
7
10/of/18
8
9 01/23/18
10
BOH
DATE PERFORMED: 16JAN18
SOILS LOG — PERCOLATION TEST
SLOPE
TEST
HOLE
12,0005F ASIT
RESERVE AREA
DATE
P®
/
NET DROP
RATE
(MPI)
1
16JAN18
4
5.880"
10,000SF
RESERVE AREA
,
¢�
10 MIN
7.940"
�
4.9
3
72,103 SF
�
4
10 MIN
7,905"
2.025"
4.9
5
4�
}
335
6
40010 SF
10 MIN
7.900"
1 2.020"
5.0
MI \
WAS GROUND WATER
ENCOUNTERED? Y
IF YES, AT WHAT
DEPTH? —9.5'—
DEPTH TO WATER AFTER
MONITORING? — 9.5' / 7.5' —
DATE: 23JAN2018 / 01OCT2018
COMMENTS: Test hole excavated by SULLIVAN WATER WELLS
PERFORMED BY: Joseph Lawendowski. I CERTIFY THAT THIS TEST
WAS PERFORMED IN ACCORDANCE WITH ALLSTATE AND
MUNICIPAL GUIDLINES IN EFFECT ON THE DATE OF THIS TEST.
SLOPE
TH 1
SOIL TEST RESULTS /ANALYSIS
• PERCOLATION RATE 5.0 (min/inch)
(Hydrologic Soils Group: HSG A)
• PERC HOLE DIAMETER 6"
• TEST RUN BETWEEN 4 FT AND 5 FT.
• TEST RUN FOR OVER AN HOUR, LAST
THREE READINGS PROVIDED.
READING
DATE
NET TIME
WATER
LEVEL
READING
NET DROP
RATE
(MPI)
1
16JAN18
5.880"
2
10 MIN
7.940"
2.060"
4.9
3
5.880"
4
10 MIN
7,905"
2.025"
4.9
5
5.880"
6
10 MIN
7.900"
1 2.020"
5.0
NOTES: PANNONE ENG SVC, LLC Date
SOILS REPORT P.O. BOX 102954 ANCHORAGE, AK 9951002/06/2018
PHONE (907) 272-8218 FAX (907) 272-8211 ••�••••• Scale
�• NTS
LAMPERT ESTATES TR B1 A P.I.D. No
SITE: 20914 OBERG ROAD -102-67
1780{98
DRAWN JRL COLE & DIANE SULLIVAN •.g 81 PERMIT N0.
PO BOX 670272 E o 1 0 OSPxxxxxx
SOILS LOGS CHUGIAK, AK 99567 Sheet
40F4
i
M 41 // I
1
TRACT B1 Bf`
TRUE NORiH SCALE 1"= 80'
— — — —
I WELL E ! /$ !✓ f I / I \ \\\ 1 / -`� \ ^ ' x / I I /
14EL1P / \ \ \`o'
D 1 I I
\ \ I?\ � i\ 1 I I
Ij
sEPT!c
AREA ,° /� ! � // � � � I I I 11 `•\ \ • • \\ � / ' ' I
r% /y
–
--–––––––––––––––––––––
/SFD \ -1
�.;,/ ! !�o� //" / I /��335.5 i �`c� /\•^'� \\ I\ ---- ------- - - - -�J
41
c. ...
RESR1[ At+u
it
SFD
- \ ' AD R AK > 757 \ \ \ FF -33I1
/ SEPTIC ;� •\\•C_--\ \ \\`M \� \\ \�i 1 1 /�
AREA / / I I CJI!-` \ _ _. \ \ \ \ \ \ \\ \ I I // \ R 'cs .00m,
\ /
WELL o l II 11 \ II. SFD 72.103 SF
M M , l J, (P)/
\1` / \ i i ` I \\ \\\ • I\ /\ I i // / / /i , / / / �/ / / FF -335.5 1000G SEPTIC TANK(E .
\ \ I ( / r r ( \ \ I 401000 SF 112.2
\\\\ \\\\I
1 1 F / WELL E 3
100.0 88. r
RA R AK > '•1 —� \ \ \ \ 101.5 .RESERVE AREA BASED ONA-C TS P N C
22.5LFx5.0 W%0.5 E.D.,4.0 T.D. P
SFO \ - - - _•- \ �� 33 5LFx23.0'Wx0.S-E.D. 4.0'T.D. E y\
WELL E \ \ i \ ` \ \ \ \ \ \ \ ♦ \3\ \� \ \ \ \ l I _ FF-33Zt
" \
� �I _`\1 \ �\ \ \ \ \,� � zss\\ zxs \ zes\� _ `��\ \--�•� -%-- \ \ \\\ \ \ i /' �W I I I
Y,( RA RAKr>-it---�\ \• \\ (-'SEPTIC
REA
TRACT B1 ALi Lf.
/ ,1.1 -'\ \ \ \` ``\WE`E`P •� \ �\ - �A4 `\ \ l �\ _ •,ou,a
-
\ F(?1E-iSRIFS----- - ----- -- -- -
\ 4A --
YO' R.O.W. 3rcr•r 1 ! I I
_Q 0
Fn
Q
O!f cr -i
0 -
CD W
Q- F-
�-m
Qo z
w
O
I— 0 Of 0 >_
W N 0
CL L;j j
:2I– D
Q (n
J
U
W Z J c ry
J o m m
OcdNUF
LU LU
ZLu ZV
Z T,;'ry
5:o
Q
�x� 0 V re o O r c
G ZLu
W Ln
.O I� I1•N
a h
m
� xa eN
� iN v3
Z