HomeMy WebLinkAboutTRAILS END BLK 8 LT 4TRAILS END
Lot 4
#015 191-32
(Rev 05/02/1QJ
Municipality of Anchorage
On -Site Water and Wastewater Section - (907) 343-7904 Page 1 of 1
ON-SITE WASTEWATER INSPECTION REPORT
Permit Number: OSP241291
PID Number: 015-191-32
Dwelling: RN Single Family (SF)
❑ with ADU R Duplex (D) F] Two Single Family
Project: RE New R Upgrade
Name
Spinell Homes
ABSORPTION FIELD
F] Deep Trench RE Wide Trench R Bed [:1 Mound
Site Address
11501 Cobra Street
El Other
Phone
Number of Bedrooms
Soil Rating
depth from original grade
13
2.0 GPD/SF
JTotal
+2.0 Ft.
LEGAL DESCRIPTION
Depth to pipe invert from original grade
+2.6
Ft.
Gravel depth beneath pipe
0.5 Ft.
Subdivision Block Lot
Trails End
8 4
Fill added above original grade
6.2
Ft.
Gravel length
45 Ft.
Township Range Section
Gravel width
5.0 Ft.
Beds: Number
n/a
of Lines
Distance between lines
n/a Ft.
SEPARATION
DISTANCES
To
Septic
AbsorptionLift
Holding Sewer
Total absorption area
Number of trenches
Dist. between trenches
From
Tank
Field
Station
Tank Line
225 Ft2
1
n/a Ft.
Well86.8
138.9
94.9
NA 25'+
TANK [I septic W S.T.E.P.
❑ Holding N Other
Manufacturer
Orenco
Capacity
1500 Gal,
Surface Water
50'+
50'+
50'+
NA
Material
I Fiberglass
Number of compartments
2
Lot Line
5
10'+ 10'+
NA NA
Foundation
10'+
10'+
10'+
NA
LIFT STATION
Manufacturer
Orenco
Capacity
250 Gal.
Remarks
Alarm location
House
Electrical installed by
Walker and Son Services
PIPE MATERIAL House to tank D3034 Tank to D1785
drainfield
Installer
—
Pomraning Excavation
Drainfield D1785 CO/MT D3034
Inspector Pannone Engineering Services, LLC
BENCH MARK (Assumed elevation) 105.3 ft
ection v, 2/25/25
Inspdates:
2/26/25
Location and description
Zed
FAP Lid
3rd 3/10/25
41' 9/10/25
1
ON-SITE WATER AND WASTEWATER SECTION APPROVAL
Engineer's Stamp
OF AC�S���
Conditional Approval:
Date
49 TSH
even - 'a*n*n*o*r-') e
C. E 214 '1)
Septic Syste%
9�e
Approved
Date
09/10/2025.
/Nde- this approval does not include well permit requireme4ts.
(Rev 05/02/1QJ
WELL (E)
3 BR
SFD (E)
DRIVEWAY
5' T&E EASEMENT
10
'
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5'
T
&
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A
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M
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N
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INSTALLED ADVANTEX FAP2.0 (N)
INSTALLED FC BEFORE AND AUX PUMP
VAULT AFTER
ORENCO PUMP VAULT (N)
INSTALLED DRAIN FIELD (N)
45LF x 5.0'W x 0.5'ED x +2.0'TD
INSTALLED MT AT EACH END
FC
A
B
1
3
0
0
1
2
9
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0
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13
1
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MH
LS
M1
M2
TH-2 FORGE
TH-1 FORGE
RESERVE AREA
NO WELLS WITHIN
100-FEET OF SEPTIC
AREA
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NO WELLS WITHIN
100-FEET OF SEPTIC
AREA
86.7'
139.0'
13.4'
PA
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1.25" SCHD 40 PVC LATERAL
W/ 18" HOLES DRILLED AT 36" O.C.
OG: 100.0
FILTER FABRIC
102.5 102.5
FG: 106.2
BOH
6
7
5
3
4
2
TH-2 FORGE
OB
1
DATE PERFORMED: 9/13/2024
9/20/2024
93.7
SM
3.0' FILTER SAND
OF/FG:105.0
101.2
TO DRAIN FIELD
4" MIN TOPSOIL W/SEED
DRAIN ROCK 6" ABOVE PIPE INV
3:1
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4" MIN TOPSOIL W/SEED
2" R.I. PER CONTRACTOR
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NT
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SCALE: NTS
ADVANTEX PROFILEA
SCALE: NTS
DRAIN FIELD PROFILEB
www.sullivanwaterwells.com
Pump Installation Log
Well Drilling Permit Number: OSP 241291 Date of Issue 10/7/24
Parcel Identification Number: 01519132000
Legal Description Property Owner Name & Address
Trails End B8 L4 Spinell Homes
11501 Cobra St.
Anchorage, AK 99507
Pump Installation Date:
2/7/25
Pump Intake Depth Below Top of Well Casing:
133 feet
Pump manufacturer’s Name:
Flint & Walling
Pump Model:
4F07P05301S
Pump Size:
1/2 hp
Pitless Adapter Burial Depth:
12 feet
Pitless Adapter Installer:
Pitless Manufacturer:
Disinfected Upon Completion?
yes no
Method of Disinfection:
Chlorine 50 PPM
Comments:
Pump Installers Name:
Sullivan Water Wells
Attention: The pump installer shall provide a pump installation log to the DSD within 30 days of pump installation.
Merrill
Unknown
Certified Drilling Log
OWNER OF LAND: Spinell
ADDRESS: 11501 Cobra St. Anchorage, AK 99507
LEGAL DESCRIPTION Trails End B8 L4
DATE: 11/5/24
PERMIT NUMBER: OSP241291 DATE OF ISSUE: 10/7/24
TAX IDENTIFICATION NUMBER 01519132000
Is well located at approved permit location: Yes No
Method of Drilling: air rotary cable tool
Depth of Well: 145’
Casing Type: Steel Wall thickness .250 inches
Diameter: 6 inches, depth 144 feet
Liner type
Static Water Level: 41 feet
Recovery Rate 5 gpm gph
Method of Testing Air
Well Intake Opening Type: open end open hole
Screened Start feet Stopped
Perforations Start feet Stopped
Grout Type: Bentonite Volume: 50 Lbs.
Depth: from 2 feet, to 42 feet
Well Disinfected Upon Completion: yes no
Method of Disinfection: Chlorine 50 PPM
Comments:
Bore Hole Data
Depth
From To
0 2 Casing Stickup
2 4 Overburden
4 53 Silty sand and gravel with cobbles
53 115 Hardpan
115 138 Brown clay and gravel
138 145 Tight sand and gravel water
Drillers Name: Cole Sullivan
ATTENTION: It is the responsibility of the property owner to submit a copy of the well log to the proper authority.
Municipality of Anchorage: Department of Health & Human Services and/or Department of Environmental Conservation.
MatSu Borough: Department of Environmental Conservation.
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
hftp://www.muni.org/onsite
On -Site Water & Wastewater System Permit
Permit Number: OSP241291
Work Type: WellSeptic Initial
Tax Code Number: 01519132000
Site Legal Address: TRAILS END BLK 8 LT 4 G:2641
Site Mailing Address: 11501 COBRA ST, Anchorage
Owner: LAGASSE BENJAMIN 50% &
Design Engineer: FORGE ENGINEERING
This permit is for the construction of:
Effective Date:
Expiration Date
�llell 1.
r,
l7cpartrnenr
Lot Size in Sq Ft:
Total Bedrooms:
10/7/2024
10/7/2025
22786
Q Disposal Field Q Septic Tank ❑ Holding Tank ❑ Privy 2 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: � - L i - 7-0 (r = Date:
Issued By: L Date: '
3
MUNICIPALITY OF ANCHORAGE U.5 H
Community Development Department Phone: 907-343-7904
Development Services Division Fax: 907-343-7997
On -Site Water & Wastewater Program
ON -SITE SEWER/WELL PERMIT APPLICATION
Parcel I.D. 015-191-32
Property owner(s) Benjamin Lagasse & Danielle Gerik Day phone
Mailing address 7201 Chad Street, Anchorage, AK, 99518
Site address 11501 Cobra Street, Anchorage, AK, 99507
Legal description (Sub'd., Block & Lot) Trails End, Block 8 Lot 4
Legal description (Township, Range & Section)
Lot Size - 22,786 _Sq. Ft. Number of Bedrooms 3
APPLICATION IS FOR: APPLICATION IS AN: TYPE OF DWELLING:
(N all that apply)
Absorption Field RX Initial RX Single Family (SF)
(w/wo ADU)
Septic Tank 1K Upgrade El
Duplex (D) ❑
Holding Tank R Renewal R
Multiple Dwellings ❑
Privy ❑ (SF and/or D)
Private Well RX
Water Storage R
THIS APPLICATION INCLUDES A VARIANCE / WAIVER REQUEST FOR:
Distance:
I certify that the above information is correct. I further certify that this is in accordance with
applicable Municipal Codes.
(Signature of property owner or authorized agent)
Permit/Rush Fees: Waiver Fees:
Date of Payment:
Receipt Number:
Permit No. C)'5p2qjZ9j
Date of Payment:
Receipt Number:
Waiver No.
Permit App_-'- : - :—'.,:c ,
October 3, 2024
MOA Development Services, On-Site Water & Wastewater Program
4700 Elmore Rd
Anchorage, AK 99507
Subject: Trails End, Block 8 Lot 4 – 11501 Cobra Street
Septic system design
Dear On-Site Services Engineer:
The owner of the above lot intends to build a 3-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 down mildly from the east side of the lot to the west side of
the lot. There are no slopes greater than 25% within 50 feet downslope of either the primary or
alternate site. Contours are shown on the site plan showing the grade and direction of flow.
Stormwater drainage will not impact this septic system. The new trench 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 50’ 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
OSP241291, Curtis Townsend, 10/07/24
CO - CLEANOUT
2CO - DOUBLE CLEANOUT
FCO - FOUNDATION CLEANOUT
PV - PUMP VAULT
MH - MANHOLE
MT - MONITORING TUBE
SV - SEPTIC VENT
TH - TEST HOLE
LEGEND
1"=30'
TRAILS END, BLOCK 8 LOT 4
FEET
0 30 60Benjamin Schiller
CE 12592REGISTEREDPROFESSION A L E N GINEER
9/4/2024
SEPTIC PLAN
3-BDRM HOME
CO
B
R
A
S
T
R
E
E
T
1
0
'
C
E
A
E
A
S
E
M
E
N
T
5' T&E EASEMENT
NEIGHBORING WELLS
ON LOTS , 6, 7, AND 8
OUT OF VIEWPORT5'
T
&
E
E
A
S
E
M
E
N
T
NEIGHBORING WELL ON
LOT 5 OUT OF VIEWPORT
45' LONG x 5' WIDE, 6"
EFFECTIVE DEPTH
ABSORPTION TRENCH W/
MONITORING TUBES WITH 1'
FROM TRENCH ENDS
1500-GAL FAP 2.0
ADVANTEX TANK
w/ AX20 POD
ALTERNATE SITE
PROPOSED WELL
w/ 50' RADIUS
MT
MT
TH#1
PV
FCO
1305
1300 13101295
1295
1300
1305
1310
AREA OF NEIGHBORING SEPTICNEIGHBORING WELL
OUT OF VIEWPORT
TH#2
>10'
ENSURE MINIMUM OF 10'
FROM PROPERTY LINES
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP241291, Curtis Townsend, 10/07/24
TRAILS END, BLOCK 8 LOT 4
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
DESIGN FACTORS:SYSTEM REQUIREMENTS:
450 GPD PEAK FLOW
PERK RATE: 31-60 MIN/IN (CONSERVATIVE)
APPLICATION RATE: 2 GPD/SF
5' WIDE MOUND SYSTEM
1500-GAL FAP 2.0 ADVANTEX TANK
BOTTOM OF SAND: 1' BELOW GRADE(TO RECEIVING SOILS)
BOTTOM OF TRENCH: 2' ABOVE GRADE
FLOW LINE ELEVATION: 2' 6" ABOVE GRADE
450 GPD / 2 GPD/SF / 5' WIDE * 1.00 RED FACTOR [6" DEEP] = 45 LF TRENCH REQUIRED
(45 LF SPECIFIED)
9/13/24
DRAINFIELD ROCK
2'
GEOTEXTILE FABRIC
1.25" PVC WITH 15x 1
8"
HOLES AT 3' o.c. FOR
EACH TRENCH
6"
3:1 MAX SLOPES
PROVIDE JUTE MESHING AND TOP
SOIL W/ SEEDING
5'
2'
3' MOA APPROVED SAND
2" FOAM INSULATION
6"
1'
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP241291, Curtis Townsend, 10/07/24
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 START TIME NET TIME
(minutes)
DEPTH to
WATER NET DROP
PERCOLATION RATE: (MIN/INCH)
(inches)(inches)
DATE OF MONITORING
WAS WATER ENCOUNTERED?
DEPTH TO WATER AFTER MONITORING
IF YES @ WHAT DEPTH?
----
8/20 1
2
3
SM (SILTY SAND w/ GRAVEL)
Professional Engineers Stamp:
YES
TRAILS END, BLOCK 8 LOT 4
8/20/2024 015-191-32
ANDRE SPINELLI
10:00 1 0
16
1' OB
30
Benjamin Schiller
CE 12592REGISTEREDPROFESSION A L E N GINEER
PERC TEST
LOCATION
TECHNICIAN: M. JAKUBISIN
0 12
16
2.0'
2.0'
9/4/24
COMMENTS:
SITE PLAN
- 4
16
USCS SOIL CLASSIFICATION WAS DETERMINED BY LAB
9/4/24
PERCOLATION TEST ATTEMPTED IN SEVERAL SPOTS, BUT GROUNDWATER ROSE TOO QUICKLY
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP241291, Curtis Townsend, 10/07/24
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 2
DATE READING START TIME NET TIME
(minutes)
DEPTH to
WATER NET DROP
PERCOLATION RATE: (MIN/INCH)
(inches)(inches)
DATE OF MONITORING
WAS WATER ENCOUNTERED?
DEPTH TO WATER AFTER MONITORING
IF YES @ WHAT DEPTH?
0.5
9/13 1
2
SM (SILTY SAND w/ GRAVEL)
Professional Engineers Stamp:
YES
TRAILS END, BLOCK 8 LOT 4
9/13/2024 015-191-32
ANDRE SPINELLI
10:00 1 0
16
1' OB
1:32
Benjamin Schiller
CE 12592REGISTEREDPROFESSION A L E N GINEER
PERC TEST
LOCATION
TECHNICIAN: J. OPHEIM
7 0
16
2.5'
2.5'
9/20/24
COMMENTS:
SITE PLAN
6 0
16
USCS SOIL CLASSIFICATION WAS DETERMINED BY LAB
9/13/24
10:03 1 0
162:09 7 0
16 6 0
16
3 10:05 1 0
162:26 7 0
16 6 0
16
4 10:08 1 0
162:40 7 0
16 6 0
16
5 10:11 1 0
162:47 7 0
16 6 0
16
6 10:14 1 0
162:57 7 0
16 6 0
16
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP241291, Curtis Townsend, 10/07/24
% GRAVEL 29.1 USCS SM
% SAND 33.3 USACOE FC N/A
% SILT/CLAY 37.6 % PASS. 0.02 mm N/A
% MOIST. CONTENT 10.1 % PASS. 0.002 mm N/A
N/A
N/A
N/A
SIEVE SIEVE TOTAL %SPECIFICATION
SIZE (mm)SIZE (U.S.)PASSING (% PASSING)
152.40 6"100
76.20 3"100
38.10 1.5"98
19.00 3/4"91
12.70 1/2"83
9.50 3/8"79
4.75 #4 71
2.00 #10 63
0.85 #20 56
0.43 #40 51
0.25 #60 47
0.15 #100 43
0.075 #200 37.6
ELAPSED DIAMETER
TIME (MIN) (mm)
0
1
2
5
8
15
30
60
250
1440
SOUNDNESS OF AGG.
(ASTM C88)
DEGRADATION
(ATM T-313)
LA ABRASION
(ASTM C131/C535)
SP. GRAV. COARSE AGG.
(ASTM C127)
11301 Olive Lane ∙ Anchorage, Alaska 99515 ∙ Phone: 907-344-5934 ∙ Fax: 907-344-5993 ∙ www.nge-tft.com
N/A
N/A
The testing services reported herein have been performed to recognized industry standards, unless otherwise noted. No other warranty is made. Should engineering
interpretation or opinion be required, NGE-TFT will provide upon written request.
N/A
HYDROMETER RESULT
N/A
SIEVE ANALYSIS RESULT
2024 Material Testing
6927-24
Trails End B8-L4
24-S-11
Silty sand w/ gravel
8/20/2024
Paul Santillana
Andrew Smith
TOTAL %
PASSING
UNKNOWN
UNKNOWN
Forge EngineeringPROJECT CLIENT:
PROJECT NAME:
PROJECT NO.:
SAMPLE DESC.:
NGE-TFT ID #:
CLASSIFICATION:
DATE RECEIVED:
TESTED BY:
REVIEWED BY:
UNIFORMITY COEFFICIENT (Cu)
COEFFICIENT OF GRADATION (Cc)
ASTM D1557 (uncorrected)
ASTM D4718 (corrected)
OPTIMUM MOIST. CONTENT. (corrected)
125
130
135
140
145
150
0 2 4 6 8 10 12 14
DR
Y
D
E
N
S
I
T
Y
(
p
c
f
)
MOISTURE CONTENT (%)
MOISTURE-DENSITY RELATIONSHIP ASTM D1557
SILT or CLAYCOBBLESGRAVEL
Coarse Fine
SAND
Coarse Medium Fine
0
10
20
30
40
50
60
70
80
90
100
0.0010.010.1110100
FI
N
E
R
B
Y
M
A
S
S
(
%
)
GRAIN SIZE (mm)
PARTICLE SIZE ANALYSIS ASTM D6913 / C136 / D422
#200#40#101.5 1/2363/4 #4 #20 #60 #1003/8U.S.SIEVE OPENING IN INCHES U.S.SIEVE NUMBERS HYDROMETER
MUNICIPALITY OF ANCHORAGE
ADVANCED WASTEWATER TREATMENT SYSTEM
MAINTENANCE AND REPAIR AGREEMENT
THIS MAINTENANCE AND REPAIR AGREEMENT, herein the "AGREEMENT" made and
'I L
entered into as of this Day of Jzri<r' of 20 Z by and between
herein the "OWNER," and the Municipality of
Anchorage, herein the "MUNICIPALITY", in accordance with Anchorage Municipal Code
(AMC)15.65.365. In consideration of the mutual covenants contained herein, the parties to this
Agreement agree as follows:
1. Advanced Wastewater Treatment Systems. The Municipality grants permission to the
Owner to utilize and operate an Advanced Wastewater Treatment System (AWWTS),
described as A 1D -
located at (legal description)
(s `:
2. Maintenance, Repairs and Alterations.
(Owner is required to read, understand and initial each section)
Throughout the term of this Agreement, the Owner shall enter into a service agreement
with an AWWTS service and maintenance provider approved by the Municipality or the
manufacturer's representative. The AWWTS shall be maintained in a satisfactory
condition capable of performing as designed and producing treated septic effluent in
accordance with the equipment's approval for operation in the Municipality.
It shall be the responsibility of the Owner during the term of this Agreement to pay for all
repair(s), maintenance, adjustment(s), replacement costs, and inspection costs. This
includes an annual maintenance fee (typically $400 to $600).
!� r
Owner agrees that only maintenance and repair personnel approved by the Municipality
or the manufacturer's representative will inspect and make any necessary maintenance,
repairs or permitted alterations to the system.
Owner acknowledges that regular maintenance of an AWWTS reduces the potential
failure of the system, which could include sewage backup and costly repairs or drainfield
replacement.
(rev. 05/18/2018) Paget of 3
Owner acknowledges that the Municipality may request records of maintenance and
fl� repairs from the manufacturer's representative or maintenance provider.
�'1 L Owner acknowledges that the fine for failing to maintain and repair an AWWTS may be
assessed in accordance with AMC 14.60.030.
Owner agrees to grant the Municipality reasonable access to test and inspect the
AWWTS. The Municipality will give at least 24-hour notice.
n!
Owner agrees that any sale or transfer of title of the property will not occur without a new
Certificate of On -Site Systems Approval.
L Owner agrees that the AWWTS installation and maintenance requirements as provided
by the AWWTS vendor/installer and approved by the Municipality are the governing
guidelines for the construction, maintenance and repair of the Owner's AWWTS.
Owner agrees to maintain remote monitoring of the AWWTS as required by the
AWWTS approval.
3. Term. The term of this Agreement shall begin on the date of approval by the
Municipality to operate the installed system, or upon transfer of title, and shall continue
while the AWWTS is operational or until title is transferred.
4. Nonwaiver. The failure of the Municipality at any time to enforce a provision of this
Agreement shall in no way constitute a waiver of the provisions, nor in any way affect
the validity of the Agreement or any part hereof, or the right of the Municipality
thereafter to enforce every provision hereof.
5. Amendment. This Agreement shall only be amended by authorized representatives of
the Owner and Municipality. Any attempt to amend this agreement by either an
unauthorized representative or unauthorized means shall be void.
6. Jurisdiction: Choice of Law. Any civil action arising from this Agreement shall be
brought in the Superior Court for the Third Judicial District of the State of Alaska at
Anchorage. The laws of the State of Alaska shall govern the rights and obligations of the
parties under this Agreement.
7. Severability. Any provisions of this Agreement decreed invalid by a court of competent
jurisdiction shall not invalidate the remaining provisions of the Agreement.
(rev. 05/18/2018) Page 2 of 3
By: 2� (signature) Date: 0q, /Z ov—j
S,6, (print name)
STATE OF ALASKA )
) ss.
THIRD JUDICIAL DISTRICT )
The foregoin instrument was acknowledged before me this day of &Pit i/.e.4- ,
20 Z4, by B12 M aP7 Joel -e-
ALA A
OFFICIAL SEAL
N Y PUB OR ALA SKA NOTARY BLYe
®� Kayla-L ianne L®aan�a
My Commission expires: d 9 D (p 9 M' comadadon, exgi'ra Jam e. aa2�
MUNICIPALITY:
By: (signature) Date:
(print name) Title:
(rev. 05/18/2018) Page 3 of 3
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
OSC251405
Parcel ID 015 -191-32
Legal description TRAILS END BLK 8 LT 4
Expiration Date: 8/21/2026
Site address 11501 COBRA ST
Current property owner(s) SPINELL HOMES INC
X The On-site system(s) is/are approved for 3 bedrooms
M
Conditional approval for bedrooms, with the following stipulations:
Comments or conditions:
No comments
Original Certificate Date
9/15/2025
This ertificcte of On -Site Systems Approval (COSA) is intended to demonstrate the subject
s em(s) is/are in substantial compliance with municipal code. The Municipality of Anchorage,
evelopment 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 Well Flow Advisory
Absorption Field Advisory Nitrate Advisory
Tank Age Advisory Arsenic Advisory
Other
MUNICIPALITY OF ANCHORAGE
Awf
Development Services Department Phone: 907-343-7904
On -Site Water & Wastewater Section t Fax: 907-343-7997
Certificate of On -Site Systems Approval Application
1. GENERAL INFORMATION
Parcel I.D. 015-191-32
Complete legal description Trails End, Block 8 Lot 4
Location (site address) 11501 Cobra St
Current property owner(s) Benjamin Lagasse & Danielle Gerik Day phone
2. ON-SITE SYSTEMS SIZED FOR 3 BEDROOMS
3. TYPE OF WATER SUPPLY: rm-1 Private Well serving *_1_ dwelling units
El Other Non-public well as regulated by MOA F-1 Water Storage
F-1 Community Well or Public
4. TYPE OF WASTEWATER DISPOSAL: MN Private Septic 0 Private Septic serving 2 dwelling units
F-1 Holding Tank R Community Septic or Public Sewer
5. SEPTIC TANK: Fj Steel FO -1 Plastic ❑ Concrete ❑ Fiberglass
Age NEW _ See advisory if steel or fiberglass older than 20 years
6. ABSORPTION FIELD: ❑ AWWTS M Bed E] Deep Trench RN Wide Trench E] Seepage Pit
Waiver request for: Distance:
Expedited review requested: ❑
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 $ 2 f
Waiver Fee $
Date of Payment � Date of Payment
COSA # OSC 2'1 Waiver #
COSA App1icafion_Apr2025.doc
COSA Checklist
Legal Description: Trails End, Block 8 Lot 4 Parcel ID: 015-191-32
If more than 1 well and/or septic system on lot, provide separate checklist. Structure served by this system 1
A. WELL DATA
❑■ Well log is filed with Onsite (or attached)
Date drilled 11/5124 Total depth 145 ft
Cased to 144 ft
❑■ Sanitary seal is functioning correctly
❑■ Wires are properly protected
Casing height (above ground) 24 in.
Date of flow test for COSA 11/5/24
Static water level at beginning of test 41 ft.
Comments
B. TANK DATA
Measured operating fluid level in septic tank NEW
Date of pumping
❑ Required maintenance completed, if AWWTS
Comments:
D. DISPOSAL FIELD DATA
Which system tested (date installed) 2025
FE -1 ALL standpipes present per record drawing
Total measured depth from grade 4.2 ft (max)
Measured depth to pipe invert from grade ft (min)
0 N/A — pressurized field.
0 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 NSA gallons N/A date
Any rejuvenation treatment (past 12 months) N/A
If yes, enter date
Comments/Deficiencies:
COSA Checklist_May2025.docx
Well production at time of test 5.0 gpm
Water storage tank volume N/A gallons
Well disinfected for coliform test? ❑ Yes ❑■ No
❑■ Coliform bacteria is Negative
Nitrate 0.807 mg/L ❑ Nitrate less than MRL (ND)
Arsenic ug/L XArsenic less than MRL (ND)
Collected by Forge Engineering
Date 8/21/25
C. LIFT STATION
❑ Required maintenance completed
Age of lift station NEW years
Lift station material
Comments:
A quacy test date
R ults ❑ Pass
Fluid de prior to test in
Water adde gal
New fluid depth in
Elapsed time in
Final fluid depth
Absorption rate gpd
FIELD STATUS — POST RECO R`
Effective depth (per record drawing -
Effective depth used in
Effective depth remaining in
ri
E. SEPARATION DISTANCES
From Well on Lot to: (Please enter distances if less than required)
Septic Tank/Lift Station on Lot > 100'
El Yes if No >50*ft
Neighboring Tank > 100' ❑� Yes if No ft
Disposal Field on Lot > 100' ❑■ Yes if No ft
Neighboring Disposal Fields > 100'
R Yes if No ft
Sewer Line/Main > 100' R Yes if No ft
Sewer Manhole/Cleanout > 100'
❑� Yes if No
Sewer Service/Septic Line > 25'[E Yes if No
Holding Tank > 100' Yes if No
Animal Containment > 50' Yes if No
Manure/Animal Excreta Storage > 100'
❑■ Yes if No
❑ 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' 0 Yes if No ft Surface Water > 100' 9 Yes if No
Field to Foundation > 10'
❑■
Yes
if No
Tank to Property Line > 5'
R
Yes
if No
Field to Property Line > 10'
❑�
Yes
if No
Water Main/Service Line > 10'
❑E
Yes
if No
F. ENGINEER'S COMMENTS
*AWWTS
ft Wells on Adjacent Lots:
ft Wells > 100' ❑� Yes if No _
ft Community Wells > 200' ❑� Yes if No _
ft If tank or field is under driveway comment below
ft
ft
ft
ft
ft
ft
ft
ft
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 ofFirm Forge Engineering
Engineer's Printed Name Benjamin Schiller, P.E.
COSA Checklist_May2025.docx
Phone (907) 522-7773
Date 9/2/25
.' SOF A�q�ll
�* •'qg TH
.. ..
.. ... ........
J� '. • Benja. ' . chiller
����F�;l ,
CE 12592 • .������
1 tl`F�pROFESSI4N�t.� �
N
7/16/25
Feet
0 30 60
ATTENTION: Buyers and owners of a property served by an
Advanced Wastewater Treatment System (AWWTS)
** TO AVOID SEWAGE BACKUPS**
Prior to using the wastewater system, contact the service provider
to ensure that regular maintenance is completed. Many of the
systems require remote monitoring, the provider will tell you how to
provide this capability.
Who to contact:
• AdvanTex: Anchorage Tank at 907-343-3704
• Quanics Aerocell: Garness Engineering at 907-337-6179
• Biocycle: Biocycle Alaska at 907-274-0314
• BioBarrier: Tim Ecklund at 907-250-0100
• Intermittent Dosing Sand Filter (IDSF): contact MOA onsite
907.343.7904
Please complete the attached document, Advanced Wastewater
Treatment System Maintenance and Repair Agreement. When
signing this document, you acknowledge that you are required to
provide regular maintenance for your AWWTS.
MUNICIPALITY OF ANCHORAGE
ADVANCED WASTEWATER TREATMENT SYSTEM
MAINTENANCE AND REPAIR AGREEMENT
THIS MAINTENANCE AND REPAIR AGREEMENT, herein the "AGREEMENT" made and
entered into as of this Day of X4H., fry of 20 2 L by and between
herein the "OWNER," and the Municipality of
Anchorage, herein the "MUNICIPALITY", in accordance with Anchorage Municipal Code
(AMC) 15.65.365. In consideration of the mutual covenants contained herein, the parties to this
Agreement agree as follows:
1. Advanced Wastewater Treatment Systems. The Municipality grants permission to the
Owner to utilize and operate an Advanced Wastewater Treatment System (AWWTS),
described as Advantex Sytstem
located at (legal description)
Trails End, Block 8 Lot 4
2. Maintenance, Repairs and Alterations.
(Owner is required to read, understand and initial each section)
Throughout the term of this Agreement, the Owner shall enter into a service agreement
with an AWWTS service and maintenance provider approved by the Municipality or the
manufacturer's representative. The AWWTS shall be maintained in a satisfactory
condition capable of performing as designed and producing treated septic effluent in
accordance with the equipment's approval for operation in the Municipality.
?TL It shall be the responsibility of the Owner during the term of this Agreement to pay for all
repair(s), maintenance, adjustment(s), replacement costs, and inspection costs. This
includes an annual maintenance fee (typically $400 to $600).
'DSL Owner agrees that only maintenance and repair personnel approved by the Municipality
or the manufacturer's representative will inspect and make any necessary maintenance,
repairs or permitted alterations to the system.
I� Owner acknowledges that regular maintenance of an AWWTS reduces the potential
failure of the system, which could include sewage backup and costly repairs or drainfield
replacement.
(rev. 05/18/2018) Page I of 3
�L Owner acknowledges that the Municipality may request records of maintenance and
repairs from the manufacturer's representative or maintenance provider.
L Owner acknowledges that the fine for failing to maintain and repair an AWWTS may be
assessed in accordance with AMC 14.60.030.
�J Owner agrees to grant the Municipality reasonable access to test and inspect the
AWWTS. The Municipality will give at least 24-hour notice.
Owner agrees that any sale or transfer of title of the property will not occur without a new
Certificate of On -Site Systems Approval.
30'_ Owner agrees that the AWWTS installation and maintenance requirements as provided
by the AWWTS vendor/installer and approved by the Municipality are the governing
guidelines for the construction, maintenance and repair of the Owner's AWWTS.
A 1L Owner agrees to maintain remote monitoring of the AWWTS as required by the
AWWTS approval.
3. Term. The term of this Agreement shall begin on the date of approval by the
Municipality to operate the installed system, or upon transfer of title, and shall continue
while the AWWTS is operational or until title is transferred.
4. Nonwaiver. The failure of the Municipality at any time to enforce a provision of this
Agreement shall in no way constitute a waiver of the provisions, nor in any way affect
the validity of the Agreement or any part hereof, or the right of the Municipality
thereafter to enforce every provision hereof.
5. Amendment. This Agreement shall only be amended by authorized representatives of
the Owner and Municipality. Any attempt to amend this agreement by either an -
unauthorized representative or unauthorized means shall be void.
6. Jurisdiction: Choice of Law. Any civil action arising from this Agreement shall be
brought in the Superior Court for the Third Judicial District of the State of Alaska at
Anchorage. The laws of the State of Alaska shall govern the rights and obligations of the
parties under this Agreement.
7. Severability. Any provisions of this Agreement decreed invalid by a court of competent
jurisdiction shall not invalidate the remaining provisions of the Agreement.
(rev. 05/18/2018) Page 2 of 3
OWNER:
By: (signature) Date: 0, V4 /Zoz"-/
(print name)
STATE OF ALASKA
)Ss.
THIRD JUDICIAL DISTRICT
+11
The foregoiqg instrument was acknowledged before me this day of dcplrml,�
20 24., by. !�t jj V M I P7 Joel JQ 1A*z
STATE OF SE
� 7KA
OFFICIAL SEAL
L
NOTARY PUBLIC
NO R A �0 0
(]�)kRY PUB L SKA Kayla-Lianne Lozaia'
re
My Commission expires:. My commission expires Janwr 71
W%fV,vvwvwww
Date:
.e) Title:
(rev. 05/18/2018) Page 3 of 3