HomeMy WebLinkAboutLEWIS & CLARK LT 12Onsite File
LEWIS & CLARK
Lot 12
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: OSP251056
Work Type: WellSeptic Initial
Tax Code Number: 01707476000
Site Legal Address: LEWIS & CLARK LT 12 G:2941
Site Mailing Address:
Owner: BARNES J. AARON & JULI LIVING
Design Engineer: FORGE ENGINEERING
This permit is for the construction of:
Effective Date
Expiration Date:
Lot Size in Sq Ft:
Total Bedrooms:
4/7/2025
4/7/2026
202419
Q Disposal Field R1 Septic Tank ❑ Holding Tank ❑ Privy W 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
Special Provisions:
A test hole is required prior to construction of the absorption field, in the location shown on the site plan, to
confirm minimum separation to impermeable soil and seasonal high groundwater, as well as percolation rate.
Construction may proceed at your own risk prior to 7-day groundwater monitoring. If results require a design
change, construction shall stop pending approval of a change order. Please submit results with the inspection
report (or change order, if required).
Received By: 1 5 ��� �' Date:
Issued By: Date: �' �
5
MUNICIPALITY OF
Development Services Department
On -Site Water & Wastewater Section
ON -SITE SEPTIC/WELL PERMIT APPLICATION
Parcel I.D. 017-074-76
Property owner(s) J. Aaron Barnes
Mailing address 11440 Tulin Park Loop, Anchorage, AK 99516
Site address NHN Trailblaze Circle, Anchorage, AK 99516
Legal description Lewis & Clark Lot 12
Number of Bedrooms 5
Engineering Firm Forge Engineering
Building Permit Number
Day phone
Not Applicable FN
APPLICATION IS FOR: APPLICATION IS AN:
M all that apply)
Absorption Field
1XI Initial X1
Septic Tank
Upgrade EJ
Holding Tank
❑ Renewal EJ
Privy
El
Well
X1
THIS APPLICATION INCLUDES A WAIVER REQUEST FOR:
Permit/Rush Fees:,
Date of Payment:
Permit No. 5P 21 VS-6p
Waiver Fees:
Date of Payment:
Waiver No.
Phone: 907-343-7904
Distance:
April 4, 2025
MOA Development Services, On-Site Water & Wastewater Program
4700 Elmore Rd
Anchorage, AK 99507
Subject: Lewis & Clark Lot 12 - NHN Trailblaze Circle
Septic system design
Dear On-Site Services Engineer:
The owner of the above lot intends to build a 5-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 moderately down from the front of the lot toward the southwest.
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 100’ from all
wells and surface water, and more than 5’ away from the septic tank. The alternate site is located
more than 8’ away. Please refer to the attached test hole logs, 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
OSP251056, Curtis Townsend, 04/07/25
Benjamin Schiller
CE 12592REGISTEREDPROFESSION A L E N GINEER
1"=50'
(2)x-50' LONG x 5' WIDE, 4'
EFFECTIVE DEPTH
ABSORPTION TRENCHES
NEW 1,500 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
2CO
LEWIS & CLARK, LOT 12
FEET
0 50 100
≥8'
FCO
TRAILBLAZE CIR
5-BDRM HOME
1060
SEPTIC PLAN
3/5/25
10' T&E EASEMENT
10' DRAINAGE EASEMENT
1070
1080
1090
TH#22 (NE)
TH#24 (NE)
CO
CO
CO
CO
MT
MT
MT
MT
FS
ALTERNATE SITE
CONFIRMATION TEST HOLE
REQ'D PRIOR TO INSTALLATION
1100
NEIGHBORING SEPTIC
SYSTEM UNAFFECTED
PROPOSED WELL
TH#5 (GEG)
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP251056, Curtis Townsend, 04/07/25
LEWIS & CLARK, LOT 12
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
3'-6"
4'
DESIGN FACTORS:SYSTEM REQUIREMENTS:
750 GPD PEAK FLOW
PERK RATE: 6-15 MIN/IN
APPLICATION RATE: 0.8 GPD/SF
5' WIDE TRENCH SYSTEM
1500-GAL SEPTIC TANK
BOTTOM OF TRENCH: 8' BELOW GRADE
FLOW LINE ELEVATION: 4' BELOW GRADE
750 GPD / 0.8 GPD/SF / 5' WIDE * 0.5 RED FACTOR [4' DEEP] = 94 LF TRENCH REQUIRED (100 LF SPECIFIED)
GEOTEXTILE FABRIC
6"
3/5/25
PROVIDE ADDITIONAL FILL TO
ACCOUNT FOR SETTLEMENT
5'
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP251056, Curtis Townsend, 04/07/25
