HomeMy WebLinkAboutMOUNTAIN VALLEY ESTATES #1 BLK 4 LT 9
MOUNTAIN VALLEY
ESTATES #1
BLOCK 4
LOT 9
#050-661-15
Permit Number:OSP251400
Tax Code Number:05066115000
Work Type:WellSeptic Initial
Effective Date:
Design Engineer:
Site Legal Address:MOUNTAIN VALLEY ESTATES #1 BLK 4 LT 9 G:0758
Owner:LITTLE BRENT
Site Mailing Address:
Lot Size in Sq Ft:63169
Total Bedrooms:5
This permit is for the construction of:
Disposal Field Septic Tank Holding Tank Privy
Non-Public
Water 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. Coodinate with On-Site staff regarding preferred method.
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
11/4/2025
11/4/2026
NORTH RIM ENGINEERING
Expiration Date:
þ þ ¨¨¨þ
Issued To:
Issued By:
Date:
Date:
11/4/2025
11/4/2025
NORTH RIM ENGINEERING
Isatou B Njie
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
SteveEng.com Mtn Valley Est #1 B4 L9
SPECIFICATIONS & DESIGN GUIDELINES
Wastewater System Sizing: This is a new 5-bedroom, single family home. A new test
hole reveals silty sand with gravel soil, groundwater monitored @ 8 below ground level.
The water well will be drilled near the location indicated. This is a partially developed
subdivision. A new trench is planned + new 1500 gallon septic tank. No adverse impacts
are expected from trench/tank construction. No conflicts to the other lots will take place
by this septic system construction. The soil test reveals predominately sandy material, an
application rate of 1.2 GPD/FT². Trench Length = 625 FT²/5 x 0.58 = 73 trench, 3
effective. A new 1500 gallon septic tank will be installed; Easements depicted in the area,
private water wells serve subdivision lots. 4 trench depth.
Specification Requirements: All components and work must comply with the
Municipality of Anchorage Specifications (AMC) & State of Alaska Drinking Water
Regulations and Wastewater Regulations.
Two compartment, New 1500 gallon septic tank. Install Double Cleanouts. MOA-
Spec Material Under Tank.
10 minimum between the tank trench, tank to house.
3 of cover or insulation is required for trench; 2 Minimum thickness for insulation
can substitute for 1 cover.
Tank & solid pipe must be set on well compacted, stable soil.
4 inch diameter cleanouts with airtight caps are required 1 to 4 from foundation
wall, prior to any 90 degree bend in 4 inch line, in each tank compartment, and two
adjacent opposing cleanouts between the tank and the absorption field, not more than
10 from the tank positioned to provide cleanout access towards the tank and towards
the absorption field.
All cleanouts must extend to at least ground level.
In solid pipe runs, ASTM D-3034 may be used in lieu of cast iron.
Trench to be placed level, minimum of 4 to groundwater, 6 to bedrock from drain-
rock.
Drain rock to be ½ to 2 screened, distributed uniformly throughout the trench.
Perforated pipe to be installed level with perforations down.
Silt barrier (filter fabric) to be installed above the drain rock.
Smeared trench sides must be raked or scarified before drain rock placement.
The finish grade must be mounded to promote drainage away from trench.
Insulation must be placed over any pipe installed under driveways or parking areas.
Approved pipe materials include cast iron, PVC ASTM D3034, PVC ASTM F789,
ABS ASTM D2661,
Sewer Service Line is minimum 2% slope.
Septic Tank to be pumped every two years or when required.
Insulation board to be extruded direct burial polystyrene (Dow Styrofoam HI/equal)
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP251400, Isatou Njie, 11/04/25
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Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP251400, Isatou Njie, 11/04/25