HomeMy WebLinkAboutMCKINLEY VIEW ESTATES S12587Onsite File
NV
E.'.Itate., low
Proposed Lot W1, McKinley View Estates
Platting Case No. S12587
Preliminary Septic Design for Viability
NOT FOR CONSTRUCTION
revised 31 August 2022
Assumptions:
steep slopes
deep trench due to slopes
4-bedroom house
1. Estimate Daily Flow
Per DEC Installer's Manual for conventional on-site domestic wastewater treatment and disposal systems
unit
residence bedroom
150 gal/day/unit X 4 bedrooms =600 gpd
2. Septic Tank Sizing
Per AMC 16.65.205
1-3 bedrooms = 1,000 gallons liquid capacity
4 bedrooms = 1,250 gallons liquid capacity
5 bedrooms = 1,500 gallons liquid capacity
STEP tank + 250 gallons liquid capacity
tank size = 4 bedrooms = 1,250 gallon tank
require a 1,500 gallon tank minimum (12" L X 58" DIA)
3. Drainfield Sizing
Per AMC 15.65.210 Table 6. AWWTS Effluent Application Rates
I-Trench I-Bed II III
1-5 1.2 0.8 4 6
6-15 0.8 0.5 3 5
16-30 0.6 0.4 2 4
31-60 0.45 0.3 1 2
61-90 N/A N/A 0.5 1
90-120 N/A N/A 0.3 0.5
Observed Percolation Rate
5.3 minutes/inch
Application Rate
assumed Category II 3 gpd/sf
600 gpd/3gpd/sf =200 SF
Soils Percolation Rate
(min/inch)
AWWTS Category Application Rate (gpd/sf)
DEEP TRENCH DETAIL
REENIGNELANOISSEFORPDERETSIG
E
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MELISSA A. BRANCH
CE-11138
8/31/2022
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±84,575 S.F.
± 1.942 AC
LOT W-2
±57,135 S.F.
±1.312 AC
LOT W-1
LAMPERT CIRCLE
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SHEET NUMBER
SHEET TITLE
MC
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10.18.2021
44001
NW1459
AS SHOWN
MAB
MAB
P.O. BOX 92946
ANCHORAGE, ALASKA 99509
907/360-0985
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LICENSE # 102525
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MELISSA A. BRANCH
CE-11138
8/31/2022
PRELIMINARY SEPTIC
SYSTEM PLAN
C1
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2
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TEST HOLE 1
OR ORGANICS
GM/SMI SILTY SAND
AND GRAVEL
WELL GRADED
GW1SW GRAVEL AND
SAND
SOILS LOG - PERCOLATION TEST
SLOPE
x
TH
"IN
BLOCK 2
P(TE PLAN
r `.�
I rJ r �, � j•.. _
�c nun• to �
LOT'
/ •`. % ♦'`. +81St:
' \ LM
TH _
7.
CAC+rt i•� �Od :'J ! �4
ttn i MA 85'925
WAS GROUND WATER
BOH ENCOUNTERED? N
IF YES, AT WHAT
DEPTH? -DRY
DEPTH TO WATER AFTER
MONITORING? -DRY
DATE: 10/26/2020
DATE PERFORMED: 10/19/2020
TION RATE
SLOPE
TH
X
READING
DATE CLOCK
TIME
NET TIME
WATER
LEVEL
READING
NET DROP
1
0/19/202 11:24
__-
7.88
2
11:44:15
20.25 MIN
13.88
6.00
3
11:45
--.
7.88
4
11:55
10 MIN
10.06E2.5
11:55
--
7.886
12:05
10 MIN
9.837
12:05
---
7.888
12:15
10 MIN
9.78
1.90
9
12:15
y
7.88
t0
12:25
10 MIN
9.79
1.91
11.
12:25
.—
7.88
12
12:35
10 MIN
9.76
1.88
13
12:35
14
12.45
10 MIN
9.78
1.90
COMMENTS: Test hole excavated by NORTHERN UTILITIES
PERFORMED BY: Dan Moran, I CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE
AND MUNICIPAL UUIDLINES IN EFFF(T CSN TNF nnT� nG rwc rccT
NOTES: SVC, 1.
P ONE ENG
SOILS REPORT V 1� v S LLC
— P.O. 80X 102954 ANCHORAGE, AIC 99510
PHONE (907) 272-8218 FAX (907) 272-8211
McKINLEY VIEW ESTATES SUBDIVISION
LOTS W-1 & W-2
OASIS WATER LLC
SOILS LOG BARON DRIVE
CHUGIAK, AK
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,411/3/2019
Dole
Scale
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OF 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
is
16
17
18
TEST HOLE 2
OR ORGANICS
GM/SMI SILTY SAND
I AND GRAVEL
WELL GRADED
GW/SW GRAVEL AND
ISAND
BOH
DATE PERFORMED: 10/1912020
IPEROLATION RATE
WE
SOILS LOG - PERCOLATION TEST
SLOPE
x
TH
11fry ON woff 01119
-V u
-Al
%
F ram lcl
WAS GROUND WATER
ENCOUNTERED? N
IF YES, AT WHAT
DEPTH? -DRY
DEPTH TO WATER AFTER
MONITORING? -DRY
DATE: 10/26/2020
SLOPE
7H
x
READING
SITE PLAN
NET TIME
WATER
LEVEL
READING
NETDROP
10/19/202C 10:45
-T7109:45
6.00
TH-2
24.75 MIN
--
F2,00
6.40
3
"N
-
6.00
LOT W-2
Am'wmx - N
1 0�
10 MIN
7.88
1-88
11fry ON woff 01119
-V u
-Al
%
F ram lcl
WAS GROUND WATER
ENCOUNTERED? N
IF YES, AT WHAT
DEPTH? -DRY
DEPTH TO WATER AFTER
MONITORING? -DRY
DATE: 10/26/2020
SLOPE
7H
x
READING
DATE CLOCK
TIME
NET TIME
WATER
LEVEL
READING
NETDROP
10/19/202C 10:45
-T7109:45
6.00
2
24.75 MIN
--
F2,00
6.40
3
11:10
-
6.00
4
11:20
10 MIN
7.88
1-88
5
11:20
...
6.00
--
a
6
11-30
10 MIN
7.69
1.69
7
11:30
---
6.00
..-
8
8
11:40
10 MIN
7.60
1.60_
9
11:40
-1l
---
6.00
--
10
�5O
10 MIN
7.54
1.54
11
.50
.00
12
12:00
10 MIN
7.53
1.53
13
12:00
--
6.00
1 14
12:10
10 MIN 1
7.51
COMMENTS: Test hole excavated by NORTHERN UTILITIES
PERFORMED BY: Dan Moran. I CERTIFY THAT THIS TEST WAS PERFORMED IN ACCORDANCE WITH ALL STATE
AND MUNICfPAlGI -lInI IMI:q 1h) PI:rI:rT r)lll TUC nATE r1l .11 -
NOTES: PA ONE ENG SVC, Dote
SOILS REPORT LLC 01= A� N��
P.O. BOX 102954 ANCHORAGE, AK 99510 11/3/2019
PHONE (907) 272-8218 FAX (907) 272-8211
A NTS
McKINLEY VIEW ESTATES SUBDIVISION P.I.D. NO
LOTS W-1 & W-2 792-27
-e&t--ER
OASIS WATER LLC CE 8149 PsMIT No.
xxxxxx
SOILS LOG BARON DRIVE ...... Sheet
CHUGIAK, AK��®�� Q01- 2 OF 2
MATANUSKA ELECTRIC ASSOCIATION, INC.
LETTER OF NON -OBJECTION
Date: November 17, 2021
AMG, LLC
1712 Ship Ave Ave
Anchorage, AK 99501
Atten: David L. McCabe
Re: Tract W, McKinley View Estates Subdivision, Plat 82-225, Anchorage Recording District, Encroachment
of septic drainage line in 75 ft. Power Transmission Line Easement.
Dear David L. McCabe
MEA has no objection to the encroachment of the septic drainage line located in the 75 ft. Power
Transmission Line Easement, as shown on page 2 of the attached drawing dated October 18,2021,
subject to the following conditions:
1. The improvement will in no way restrict or limit the current or future ability of MEA to fully enjoy the
benefits of the easement for any and all utility purposes that it presently enjoys under the easement.
2. MEA will be held harmless by the landowner from liability for any and all damages or injury to any
person or property that may result from the existing and future use of the easement by MEA, its
contractors, or assigns.
3. MEA will be held harmless by the landowner for any and all liability arising out of or relating to any use
of the easement by others under a Letter of Non -Objection.
4. The landowner will be liable for any damages caused to MEA facilities by the improvement in the
easement.
5. The landowner will be responsible for any special construction costs incurred by MEA due to the
improvement in the easement.
6. The landowner will assure compliance with all applicable safety codes relating to the improvement in
the easement.
7. Use of this letter by the landowner, their successors or assigns will constitute acceptance of these
conditions.
8. Alteration of these conditions shall invalidate this letter.
9. This letter is not effective unless it is recorded in the Anchorage Recording District before ownership of
the referenced property is changed from the above-named landowner.
Mannys A ,\ (`
Land Services Man er\} j
G
x ii 31SAS Ld34 AYy—ea4d .�
k et�i
STATE OF ALASKA) SS -
THIS IS TO CERTIFY that on thisIr
_day of �• W3� 021, before me, the undersigned, a Notary
Public in and for the State of Alaska, duly commissioned and sworn as such, personally appeared Manny
Lopez. SR/WA, MEA Land Services Manager Known to me and to me known to be the individual(s) named
in and who executed the foregoing instrument and acknowledged to me that heishe/they signed and sealed
the same as a voluntary act and deed for the uses and purposes therein mentioned.
IN WITNESS WHEREOF, 1 have bereunto set my hand and official seal the day and year first above written
Notary public in and of Alask My commission expires b _
STATE OF ALASKA
of
I�yP�k
Return to: MEA, PO Box 2929, Palmer, AK 99645
2