HomeMy WebLinkAboutHORIZONS LT 2IN: W-A 4 Ap Ll
Lot 2
051 - 031 - 66
(Rev 05/0,/A
Municipality of Anchorage
On -Site Water and Wastewater Section • (907) 343-7904 Page 1 of 3
ON-SITE WASTEWATER INSPECTION REPORT
Permit Number: OSP251113
PID Number: 051-031-66
Dwelling: M Single Family (SF) ❑ with ADU ❑ Duplex (D) ❑ Two Single Family Project: ❑■ New ❑ Upgrade
Name
Midnight Sun Construction LLC
ABSORPTION FIELD
El Deep Trench XWide Trench El Bed El Mound
Site Address
21503 Alderleaf Ct
❑ Other
Phone __JNumber
of Bedrooms
Soil Rating
Total depth from original grade
907-727-1433
4
1.0 GPD/SF
6.4 / 6.9 Ft.
LEGAL DESCRIPTION
Depth to pipe invert from original grade
5.916.4 Ft.
Gravel depth beneath pipe
0.5 Ft.
Subdivision Block Lot
Horizons
2
Fill added above original grade
0.0 Ft.
Gravel length
120 Ft.
Township Range
Section
Gravel width
5.0 Ft.
Beds: Number of Lines
N/A
Distance between lines
N/A Ft.
SEPARATION
DISTANCES
To
Septic
Absorption
Lift Station
Holding
Sewer
Total absorption area
Number of trenches
2
Dist. between trenches
From
Tank
Field
Tank
Line
600 Ft,
>6.0 Ft.
Well
>100'
>100'
N/A
N/A
>25
TANK Septic ❑ S.T.E.P. ❑ Holding ❑ Other
Manufacturer
Greer
Capacity
1250 Gal.
Surface Water
>1
>100'
N/A
N/A
Material
Plastic
Number of compartments
2
Lot Line
>5'
>10'
N/A
N/A
NA
Foundation
>10'
>10'
N/A
N/AUFT-STATION
Manufacturer
Capacity
Remarks Tank rated for 10' burial
Gal.
Trench depths listed east / west
Alarm location
Electric ' alled by
PIPE MATERIAL House to tank D3034 drainfield Tank to
D3034
Installer
Whitters Excavation
Drainfield D3034 CO/MTD3034
Inspector Justin Earls
BENCH MARK (Assumed elevation) 100 ft
Inspection 15t 5/6/25 5/7/25
n
Location and description
dates: 2
Back door threshold
3rd 5/8/25 4 t
ON-SITE WATER AND WASTEWATER SECTION APPROVAL
Engineer's Stamp
OF
Conditional Approval:
Date'•
j *��l
*g.49 TH
r��
Septic Syste
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��` •. BencE 12592iller �4
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Approved
pp _
Date
4/9/26 ;,.'"
MIF\, �°PROFF°Rofsio�.:
i sSO'
e: this approval does not include well permit requirem nts.
(Rev 05/0,/A
ALTERNATE SITE, CAT III 24'
LONG x 5' WIDE x 0.5' EFFECTIVE
DEPTH
w/ 2' SAND FILTER
Benjamin Schiller
CE 12592R
E
GISTEREDPROFE S S I O N A L E N GINEER
1"=50'
(2) 60' LONG x 5' WIDE, 0.5' EFFECTIVE
DEPTH ABSORPTION TRENCHES
1250 GAL SEPTIC
TANK
CO - CLEANOUT
2CO - DOUBLE CLEANOUT
FCO - FOUNDATION CLEANOUT
FS - FLOW SPLITTER VALVE
MH - MANHOLE
MT - MONITORING TUBE
SV - SEPTIC VENT
TH - TEST HOLE
LEGEND
PERMIT # OSP251113 PID #051-031-66
HORIZONS, LOT 2
FEET
0 50 100
4-BDRM HOME
110
PLAN AS-BUILT
4/30/26
50' BLM ROW PER PATENT
ALDERLEAF COURT
FCO
2CO
CO1
CO2
CO3
CO4
MT1
MT2
MT3
MT4
TH#1
105
105
110100
UN
D
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PU
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PU
B
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MH
SV
ESTIMATED KEY BOX AND WATER
LINE LOCATION
A B
FCO
MH 48.7
SV 48.6
2CO 48.3
CO1 30.7
MT1 30.8
CO2 24.3
7.9
15.2
18.3
20.9
30.4
28.8
47.9
MT2 23.1
CO3 73.9
MT3 73.2
CO4 89.2
MT4 88.3
46.2
53.8
52.2
58.2
57.9
CONFIRMED 6' SEPARATION
BM
A
B
PROFILE AS-BUILT
(NO SCALE)
94.6
89.6
95.2
98.8
FC
O
MH
SV
PERMIT # OSP251113 PID # 051-031-66
HORIZONS, L2
1250 GAL
SEPTIC TANK
98.1 ORIGINAL & FINISH GRADE
60'
DRAINFIELD ROCK
MT
2
TH
#
1
NO GROUNDWATER 4/14/25
CO
2
CO
3
80.1
MT
3
2C
O
94.4
Benjamin Schiller
CE 12592
R
E
GISTEREDPROFE S S I O N A L E N GINEER
4/9/26
92.2
91.7
MOA APPROVED SAND
60'
DRAINFIELD ROCK
MT
1
TH
#
1
NO GROUNDWATER 4/14/25
CO
1
CO
4
80.1
MT
4
91.7
91.2
MOA APPROVED SAND
2" INSULATION
98.1 ORIGINAL & FINISH GRADE
89.7
92.2
91.7
89.7
89.2
91.7
91.2
89.2
EAST TRENCH
WEST TRENCH
MUNICIPALITY OF ANCHORAGE
On -Site Water & Wastewater Program
PO Box 196650 4700 Elmore Road
Anchorage, Alaska 99519-6650 Phone: (907) 343-7904 Fax: (907) 343-7997
http://www.muni.org/onsite
On -Site Water & Wastewater System Permit
Permit Number: OSP251113
Work Type: WellSeptic Initial
Tax Code Number: 05103166000
Site Legal Address: HORIZONS LT 2 G:1557
Site Mailing Address:
Owner: MIDNIGHT SUN CONSTRUCTION LLC
Design Engineer: FORGE ENGINEERING
This permit is for the construction of:
Q Disposal Field Q Septic Tank ❑ Holding Tank ❑ Privy
Effective Date:
Expiration Date:
Lot Size in Sq Ft:
Total Bedrooms:
4/23/2025
4/23/2026
45157
Q Private Well ❑ Water Storage
All construction shall be in accordance with:
1. The attached approved design.
2. All requirements specified in Anchorage Municipal code Chapters 15.55 and 15.65 and the State of Alaska
Wastewater Disposal Regulations (18AAC72) and Drinking Water Regulations (18AAC80)
3. The wastewater code requires inspections during the installation. The engineer shall notify the Development
Services Department per AMC 15.65. Provide notification by calling (907) 343-7904 (24/7).
4. From October 15 to April 15, a subsurface soil absorption system under construction during freezing weather
shall be either:
a. Opened and Closed on the same day, or
b. Covered, sealed, and heated to prevent freezing
Received By: S S C
Issued By: U,
al
Date:
Date: �' 3 zo
ANCHORAGE
ON -SITE SEPTIC/WELL PERMIT APPLICATION
Parcel I.D. 051-031-66
Property owner(s) Midnight Sun Construction LLC Day phone
Mailing address PO Box 210994 Anchorage, AK 99521
Site address N H N Alderleaf Court
Legal description
Horizons Lot 2
Number of Bedrooms 4
Engineering Firm Forge engineering
Building Permit Number J2_ ?- - I q t 3 Not Applicable nN
APPLICATION IS FOR:
APPLICATION IS AN:
(N all that apply)
Absorption Field
RX
Initial
Septic Tank
I -XI
Upgrade El
Holding Tank
❑
Renewal El
Privy
❑
Well
r_X1
THIS APPLICATION INCLUDES A WAIVER REQUEST FOR:
Perm it/Rush Fees:A/ 31 -L Waiver Fees:
Date of Payment:
Permit No. 05P 25)// 3
Date of Payment:
Waiver No.
Phone- 907-343-7904
Distance:
April 22, 2025
MOA Development Services, On-Site Water & Wastewater Program
4700 Elmore Rd
Anchorage, AK 99507
Subject: Horizons L2 – NHN Alderleaf Ct
Septic system design
Dear On-Site Services Engineer:
The owner of the above lot intends to build a 4-bedroom home on the property, so we are
submitting this permit application for the construction of a new well and septic system. The
attached site plan identifies the location of the home as well as the proposed well, septic location
and alternate site. No conflicts exist between this proposed system and any other well or septic
system, whether on this lot or adjacent lots.
The ground surface on the lot slopes very moderately from the east to the west, but large portions
are relatively flat. Contours are shown on the site plan showing the grade and direction of flow. At
the very west end of the lot the property drops approximately 5-7’ to the neighboring lot. This drop
is greater than 20’ away from the trenches, and the drop in surface height is less than 10’ below
the invert elevation of the horizontal drainpipe. Stormwater drainage will not impact this septic
system. The new trenches will be constructed parallel to the slope as much as possible.
Wells on this and adjacent lots are shown. The new system will be a minimum of 100’ from all
wells and surface water, and more than 5’ away from the septic tank. The alternate site is located
more than 6’ away. Please refer to the attached test hole log, plan and profile pages for the septic
design. If this design is followed, there will be no adverse impacts to adjacent properties.
Sincerely,
Benjamin Schiller, PE
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP251113, Curtis Townsend, 04/23/25
ALTERNATE SITE
AWWTS SYSTEM
24' LONG x 5' WIDE x 6"
EFFECTIVE DEPTH
w/ 2' SAND FILTER
Benjamin Schiller
CE 12592REGISTEREDPROFESSION A L E N GINEER
1"=50'
2x 60' LONG x 5' WIDE, 6"
EFFECTIVE DEPTH ABSORPTION
TRENCHES
PROVIDE 2' SAND FILTER
ENSURE >100' FROM NEW WELL
NEW 1,250 GAL
SEPTIC TANK
CO - CLEANOUT
2CO - DOUBLE CLEANOUT
FCO - FOUNDATION CLEANOUT
FS - FLOW SPLITTER VALVE
MH - MANHOLE
MT - MONITORING TUBE
SV - SEPTIC VENT
TH - TEST HOLE
LEGEND
HORIZONS, LOT 2
FEET
0 50 100
4-BDRM HOME
110
SEPTIC PLAN
8/22/23
50' BLM ROW PER PATENT
ALDERLEAF COURT
FCO
2CO
CO
CO
CO
CO
MT
MT
MT
MT
TH#1 FS
PROPOSED WELL
NO SEPTIC SYSTEMS
ARE WITHIN 100' OF
PROPERTY LINE
105
105
110100
UN
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PU
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Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP251113, Curtis Townsend, 04/23/25
HORIZONS, LOT 2
TYPICAL TRENCH SECTION
(NO SCALE)
NOTES:
1. GRADE AREA OVER TRENCH TO DRAIN AWAY
2. PROVIDE 3' OF COVER OVER TRENCHES AND 4' OVER SEPTIC TANK, OR 2'
WITH 2" OF INSULATION
3. CHECK GROUNDWATER AT TIME OF CONSTRUCTION. IF LEVEL IS HIGHER
THAN PREVIOUSLY OBSERVED, CALL ENGINEER IMMEDIATELY
Benjamin Schiller
CE 12592REGISTEREDPROFESSION A L E N GINEER
4" PERFORATED PVC (HOLES DOWN)
DRAINFIELD ROCK
4'
6"
DESIGN FACTORS:SYSTEM REQUIREMENTS:
600 GPD PEAK FLOW
PERK RATE: <1 MIN/IN
APPLICATION RATE: 1.0 GPD/SF
5-WIDE SHALLOW TRENCH SYSTEM
1,250 GAL SEPTIC TANK
BOTTOM OF TRENCH: 5.0' BELOW GRADE (12' MAX)
FLOW LINE ELEVATION: 4.5' BELOW GRADE
600 GPD / 1.0 GPD/SF / 5' WIDE * 1.0 RED FACTOR [0.5 DEEP] = 120 LF TRENCH REQUIRED
(120 LF SPECIFIED)
6"
4/21/25
PROVIDE ADDITIONAL FILL TO
ACCOUNT FOR SETTLEMENT
5'
GEOTEXTILE FABRIC
2' MOA-APPROVED FILTER SAND
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP251113, Curtis Townsend, 04/23/25
LEGAL DESCRIPTION:
PERFORMED FOR:
DATE: PARCEL ID#:
SOILS LOG AND PERCOLATION TEST
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
DEPTH
(feet)
TEST HOLE 1
DATE READING NET TIME
(minutes)
DEPTH to
WATER NET DROP
PERCOLATION RATE: (MIN/INCH)
(inches)(inches)
DATE OF MONITORING
DEPTH TO WATER AFTER MONITORING
<1
4/7/25 1
2
3
4
5
6GP (SILTY SANDY GRAVEL)
Professional Engineers Stamp:
Horizons L2
4/7/25 051-031-66
Midnight Sun Construction
159 8
16
2' OB
1
Benjamin Schiller
CE 12592REGISTEREDPROFESSION A L E N GINEER
PERC TEST LOCATION
TECHNICIAN: Jared Earls
165 8
16
none
4/14/25
COMMENTS:
SITE PLAN
6"
USCS SOIL CLASSIFICATION WAS VISUALLY DETERMINED
4/21/25
MOISTURE NOTED AT TIME OF DIGGING?none
159 8
16
159 8
16
159 8
16
159 8
16
159 8
16
165 8
16
165 8
16
165 8
16
165 8
16
165 8
16
6"
6"
6"
6"
6"
1
1
1
1
1
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP251113, Curtis Townsend, 04/23/25
MUNICIPALITY OF ANCHORAGE
Development Services Department
Phone: (907)343-7904
On -Site Water & Wastewater Section Fax: (907)343-7997
Parcel ID 051 -031-66
Certificate of On -Site Systems Approval
Expiration Date: 5/5/2027
Legal description HORIZONS LT 2
site address 21503 ALDERLEAF CT
Current property owner(s) FORGE ENGINEERING OFFICE
X The On-site systern(s) is/are approved for 4 bedrooms
Conditional approval for
Comments or conditions:
1-2
bedrooms, with the following stipulations:
Original Certificate Date:
5/5/2026
Thisortificate of On -Site Systems Approval (COSA) is intended to demonstrate the subject
rs
em(s) is/are in substantial compliance with municipal code. The Municipality of Anchorage,
v
elopment Service Department (DSD) issues COSAs based upon representations provided by an
independent professional engineer. The Municipality of Anchorage is not responsible for errors or
omissions in the professional engineer's submittal.
ATTACHMENTS:
COSA Checklist X
Absorption Field Advisory
Tank Age Advisory
Other
Well Flow Advisory
Nitrate Advisory
Arsenic Advisory
MUNICIPALITY OF ANCHORAGE
Development Services Department Phone: 907-343-7904
On -Site Water & Wastewater Section Fax: 907-343-7997
Certificate of On -Site Systems Approval Application
1. GENERAL INFORMATION
Parcel I.D. 051-031-66
Complete legal description Horizons, Lot 2
Location (site address) 21503 Alderleaf Ct
Current property owner(s) Midnight Sun Construction Day phone
2. ON-SITE SYSTEMS SIZED FOR 4 BEDROOMS
3. TYPE OF WATER SUPPLY: ❑ Private Well serving # dwelling units
❑ Other Non-public well as regulated by MOA ❑ Water Storage
FN_1 Community Well or Public
4. TYPE OF WASTEWATER DISPOSAL: ❑■ Private Septic ❑ Private Septic serving 2 dwelling units
❑ Holding Tank ❑ Community Septic or Public Sewer
5. SEPTIC TANK: ❑ Steel ❑■ Plastic ❑ Concrete ❑ Fiberglass
Age New - See advisory if steel or fiberglass older than 20 years
6. ABSORPTION FIELD: ❑ AWWTS ❑ Bed ❑ Deep Trench ❑ Wide Trench ❑ Seepage Pit
Waiver request for:
Expedited review requested: ❑
Distance:
By applying for this entitlement, this property is subject to inspection by municipal On-site staff
to verify the accuracy of the information provided.
COSA Fee $ 4 �'
Waiver Fee $
Date of Payment Date of Payment
COSA #%L�� l ( i �' Waiver #
COSA Application _Apr2025 doc
COSA Checklist_May2025.docx
COSA Checklist
Legal Description: Parcel ID:
If more than 1 well and/or septic system on lot, provide separate checklist. Structure served by this system ____
A. WELL DATA
Well log is filed with Onsite (or attached)
Date drilled Total depth ft
Cased to ft
Sanitary seal is functioning correctly
Wires are properly protected
Casing height (above ground) in.
Date of flow test for COSA
Static water level at beginning of test ft.
Well production at time of test gpm
Water storage tank volume gallons
Well disinfected for coliform test? Yes No
Coliform bacteria is Negative
Nitrate mg/L Nitrate less than MRL (ND)
Arsenic ug/L Arsenic less than MRL (ND)
Collected by
Date
Comments __________________________________________________________________________________
B. TANK DATA
Measured operating fluid level in septic tank
Date of pumping
Required maintenance completed, if AWWTS
Comments:
C. LIFT STATION
Required maintenance completed
Age of lift station years
Lift station material
Comments:
D. DISPOSAL FIELD DATA
Which system tested (date installed)
ALL standpipes present per record drawing
Total measured depth from grade ft (max)
Measured depth to pipe invert from grade ft (min)
N/A – pressurized field.
Per record drawings, field is insulated.
Monitor tubes go to bottom of effective.
If not, state depth into effective
Presoaked required if
(Required if house vacant or field not used for more
than 30 days prior to date of test)
Gallons introduced gallons date
Any rejuvenation treatment (past 12 months)
If yes, enter date
Adequacy test date
Results Pass
Fluid depth prior to test in
Water added gal
New fluid depth in
Elapsed time min
Final fluid depth in
Absorption rate gpd
FIELD STATUS – POST RECOVERY
Effective depth (per record drawings) in
Effective depth used in
Effective depth remaining in
Comments/Deficiencies:
COSA Checklist_May2025.docx
E. SEPARATION DISTANCES
From Well on Lot to:(Please enter distances if less than required)
Septic Tank/Lift Station on Lot > 100’
Yes if No ft
Neighboring Tank > 100’Yes if No ft
Disposal Field on Lot > 100’Yes if No ft
Neighboring Disposal Fields > 100’
Yes if No ft
Sewer Line/Main > 100’ Yes if No ft
Sewer Manhole/Cleanout > 100’
Yes if No ft
Sewer Service/Septic Line > 25’Yes if No ft
Holding Tank > 100’ Yes if No ft
Animal Containment > 50’Yes if No ft
Manure/Animal Excreta Storage > 100’
Yes if No ft
N/A – Served by Community Well (not on lot) or Public Water
From Septic/Holding Tank and Disposal Field(s) on Lot to:(Please enter distances if less than required)
Tank to Foundation > 10’Yes if No ft
Field to Foundation > 10’ Yes if No ft
Tank to Property Line > 5’ Yes if No ft
Field to Property Line > 10’ Yes if No ft
Water Main/Service Line > 10’Yes if No ft
Surface Water > 100’Yes if No ft
Wells on Adjacent Lots:
Wells > 100’Yes if No ft
Community Wells > 200’Yes if No ft
If tank or field is under driveway comment below
F. ENGINEER’S COMMENTS
G. CERTIFICATION & STATEMENT OF INSPECTION BY ENGINEER
As certified by my seal affixed hereto and as of the validation date shown below, I verify that my investigation, based
on procedures outlined in the Certificate of On-Site Systems Approval Guidelines, indicates that the on-site water
supply and/or wastewater disposal system appears to comply with applicable Municipal and State codes,
ordinances, and regulations in effect at the time of installation, unless noted otherwise.
Name of Firm Phone
Engineer’s Printed Name Date
Lot 7
..
c0
Lot 8
Lot 6
54.7'
Lot 4
89'50'59"E 1
Lot 2
1.073 Acres
N
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°; Lot 1
M
W
O
J
N
MMHOLE -
6.5' 16.0' 2.0 % 8.2' CANT
P 13.3' 1
A N 2.0' % 9.0' CANT
2 STORY
RESIDENCE 33
CANT W M o
DECK BELOW
ALDERLEAF COURT
NOTES:
GROUND LEVEL IMPROVEMENTS SHOWN ARE APPROXIMATE.
/-50' BLM ROW
PER PATENT
w
0
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THIS PROPERTY IS SERVED BY A PUBLIC WATER SYSTEM. DATE OF SURVEY: 21 APRIL 2026
PLOT PLAN ___ AS BUILT _X_ SCALE 1 30__ GRID — NW 1557Project No. J25-037161
P.O. Box 210005 4
Lang �
Associates, inc. Anchorage, Alaska 99521-0005 ,z-� ,o � �
(907) 522-6476 oa F q � ,
Professional Land Surveyors survey@langsurvey.com
Pn
I hereby certify that I have surveyed the following described property: 0� P oUp
LOT 2, HORIZONS SUBDIVISION (Plat No. 2019-119) 9 . �•QD
Anchorage Recording District, Alaska, and that the improvements situated thereon are �' "' "' ""
within the property lines and do not encroach onto the property adjacent thereto, that Q G
no improvements on the property lying adjacent thereto encroach on the surveyed •p .' 'JOIVAT A.... .LANG ....._�
premises and that there are no roadways, transmission lines or other visible Q o
easements on said property except as indicated hereon.
nS'� �QF� LS -9944.•' JPO
Dated this the �i�� Day of �-� - — — — — — —
at Anchorage, Alaska p 0 oR ' • • • • ' O o
Y� 400 �FESSIONAL �oo�
It is the responsibility of the owner to determine the existence of any easements, �Opppood
covenants, or restrictions which do not appear on the recorded subdivision plat. State of Alaska AECC963