HomeMy WebLinkAboutMIDWAY LT 1B
Municipality of Anchorage Page ! of
DEPARTMENT OF HEALTH AND HUMAN SERVICES
ENVIRONMENTAL SERVICES DIVISION
P.O. Box 196650 · Anchorage, Alaska 99519-6650 · Telephone: 343-4744
On-Site Wastewater Disposal System and/or Well Inspection Report
Permit Number: :~J~$¢3'gz/ PID Number: o~-,z9..~,5'2. ~%/-~°L~
Name:Wastewater System: U New ~ Upgrade
Address: ABSORPTION FIELD
Phone: No. of Bedrooms:
~ ~ Deep Trench ~ShallowTrench ~ Bed ~ Mound ~ Other
LEGAL DESCRIPTION Soil Rating: /. Z GPD/Sq. Ft. Total Depth from original
Lot: //~ Block: ~/~Subdivisi°n: Depth to pipe bottom from original~e:~ Ft. Gravel depth beneath pipe / / Ft.
Township: ~ Range: ~ Section: Fill ~dded above original grade~ Gravel length:
I
I
Ft. ~ Ft.
WELL: ~New ~ Upgrade Grave~ width: Number of lines: Distance between lines:
Classification (Private, A,B,C~ Total Depth: Cased To: Total absorption area: Pipe material: ~
Driller: Date Drilled: Static Water Level: Installer: Date~stal~d:
/-
t
Yield: GPM Pump Set at: Ft. Casing Height Above Ground:Ft. TAN K
SEPARATION DISTANCES ~Septic ~ Holding ~ S.T.E.P.
To Septic Absorption Lift Holding Public/Private Manufacturer: Capacity in gallons:
From Tank Field Station Tank Sewer Lines ~~ ~ /~ ~
Well ~ ~ ~ Z¢~ Material:~v~ Number°fC°mpartments:
Surface
Water /~ ~ /~ ~ _ -- __. LIFT STATION
Lot/~t~ /~ Size in gallons: M~~
Line /~-- .....
Foundation dr /~/ ~. __ -- "Pump °n" level at: I "Pump °ff' le~ water alarm at:
CurtainDrain ~/ ~¢ ~~ -- Pump Make & Model Electrical Inspections performed by: ~
Remarks: BENCH MARK
Location and Description:
Assumed Elevation:
ENGINEER'S SEAL
Inspections performed by: Dates: 1st /o-~ -¢~ ' ~ .....
Department of H es apprdval ~ ~ .........
Reviewed and approved : ' ~ ....... "':? ':~
72-013 (Rev 9/91) MOA 25
Permit No. SW950394 Page 2 of 2
Municipality of Anchorage
DEPARTMENT OF HEALTH AND HUMAN SERVICES
ENVIRONMENTAL SERVICES DIVISION
P.O. Box 196650 · Anchorage, Alaska 99519-6650 · Telephone: 343-4744
On-Site Wastewater Disposal System and/or Well Inspection Report
MIDWAY LOT lB 05129552
Legal Description: PID No'
C01 CO
A B
FCO 23.5 2.5
CO1 29.8
C02 86,5 24.0
C03 10.5 33.0
C04 27.0 40.8
C05 44.5 39.8
MT1 11.0 33.5
MT2 26.3 89.8
: 4
NOTE:
I o EXIST.
FOR 7-PLEX
N~.W lOOO GA~ ......
SEPTIC TANK mU-TOP o~ So~-__
TUBE OI4 ~PORT~
DRIVE
~9.1' 99'6'X
'95.1' 95.1
· 90.t' WATER FOUND
~0/6/9S!
DESIGN MODIFIED IN FIELD DUE TO
GROUND WATER AT 9 FEET.
SCALE l" = 40'
fi~W: TREN6HE~
i
%FCO
HSE I /~
72-013 A (2/91) MOA 25
PAGE 1 OF 1
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND HUMAN SERVI~CES
P.O. BOX 196650, 825 "L" STREET, ROOM 502
ANCHORAGE, ALASKA 99519-6650
ON-SITE WASTEWATER DISPOSAL SYSTEM (UPGRADE) PERMIT
PERMIT NUMBER:SW930394
DESIGN ENGINEER:S & S ENGINEERING
OWNER NAME:WEHR LARRY E & CAROLYN M
OWNER ADDRESS:P.O. BOX 670607
CHUGIAK, AK 99567
DATE ISSUED: 9/23/93
EXPIRATION DATE: 9/23/94
PARCEL ID:05129352
LEGAL DESCRIPTION: MIDWAY LT lB
LOT SIZE: 63610 (SQ. FT.)
NUMBER OF BEDROOMS: 3 THIS PERMIT: 3
THIS PERMIT IS FOR THE CONTRUCTION OF:
DISPOSAL FIELD /SEPTIC TANK SYSTEM
ALL CONSTRUCTION MUST 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 ENGINEER MUST NOTIFY DHHS AT LEAST 2 HOURS
PRIOR TO EACH INSPECTION. PROVIDE NOTIFICATION BY
CALLING 343-4744 OR 343-4681 AFTER BUSINESS HOURS
4. FROM OCTOBER 15 TO APRIL 15 A SUBSURFACE SOIL
ABSORPTION SYSTEM UNDER CONSTRUCTION DURING FREEZING
WEATHER MUST BE EITHER:
A. OPENED AND CLOSED ON THE SAME DAY
B. COVERED, SEALED AND HEATED TO PREVENT FREEZING
5. THE FOLLOWING SPECIAL PROVISIONS.
SPECIAL PROVISIONS:
RECEIVED BY:
ISSUED BY:
DATE:
HEALTH AUTHORITY
APPROVALS
SEWER & WATER
MAIN EXTENSIONS
SEWER & WATER
INSPECTION
ENGINEERING STUDIES
AND REPORTS
WELL INSPECTION
& FLOW TEST
SITE pLANS
ROAD DESIGN
SOlE TEST
PERCOLATION
TEST
STRUCTURAL &
MECHANICAL
INSPECTIONS
ON SITE
WASTE WATER
DISPOSAL SYSTEM
DESIGN
SeptermDer 13, ±~93
ROBERT SHAFER, P.E.
ROGER SHAFER, P.E.
CIVIL ENGINEERS
(907) 694-2979
FAX 694-1211
Municipality of Anchorage
DEPAR%/4ENT OF HEALTH AND HUIW_AN SERVICES
825 L Street
Anchorage, Alaska 99501
REFERENCE: Midway Subdivision, Lot lB
Request you issue a permit to upgrade the septic system
serving the three bedroom home on the referenced property.
The existing system was undocumented until 8/21/93.
Excavation of the existing system found it to be in a state
of failure.
A test hole was excavated and a percolation test performed in
the area of the proposed upgrade. Attached is the proposed
upgrade design.
We do not anticipate any adverse effects on neighboring
properties by the installation of the proposed septic
upgrade.
If you have any questions or require additional information
for your review, please contact us.
A. Sharer, P.E.
RAS/LSU/lsu
17034 NORTH EAGLE RIVER LOOP · SUITE 204 - EAGLE RIVER, ALASKA 99577
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ON-SITE WASTEWATER DISPOSAL SYSTEM
CONSTRUCTION PRACTICES
and
MATERIAL SPECIFICATIONS
REFERENCE: Midway Subdivision, Lot lB
GEKEI~:
1.
o
o
The scope of this project includes the installation of a
1000 gallon septic tank and leachfield trenches to serve
the three bedroom residence located on the referenced
property. The existing septic tank is to be excavated,
pumped, crushed, and removed.
Construction shall be in accordance with the approved
site plan and design drawings; Municipal permit with any
special provisions or conditions; and all applicable
State and Municipal Wastewater Disposal Regulations.
The contractor shall be responsible for obtaining any
necessary underground utility locates.
Unless specifically agreed otherwise, the property owner
shall be responsible for final grading areas subsequently
depressed from soil settling.
Contractors installing wastewater disposal systems must
be certified by the Municipal Health Department for
system installations. Owners installing their own
systems must also receive prior approval from the
Municipal Health Department.
SEPTIC TANK INSTALLATION:
1. A septic tank is to be constructed by a certified septic
tank manufacturer. Construction shall include two 4"
cleanouts for pumping access.
2. The septic tank shall be sufficiently bedded to prevent
settling or shifting of the tank.
3. Ail standpipes on the septic tank shall extend a minimum
of 12 inches above final grade.
4. Septic tanks installed with less than 4 ft. of cover
shall be insulated.
Page Two
Midway Subdivision, Lot lB
September 13, 1993
o
A foundation cleanout shall be installed one to four feet
from the building foundation. In the line between the
tank and the leachfield there shall be two adjacent
cleanouts (unless an effluent pumping system exists
within the septic tank). These cleanouts shall be
located on undisturbed soil not more than 10 ft. from the
tank. The first cleanout, in line, shall be to clean
toward the leachfield. The second cleanout shall be to
clean toward the septic tank.
Final grading over the septic tank shall be such that a
positive slope exists away from the septic tank.
ABSORPTION TRENCH/DRAINFIELD INSTALLATION:
Excavate the proposed trench to the dimensions shown on
the design. The bottom of the excavation shall be within
2 inches of level. If the sidewalls of the excavation
become smeared, they must be raked or scratched (ruffed-
up) before gravel (sewer rock) placement.
o
Once the gravel is installed, the distribution pipe is to
be installed level with the perforations faced downward.
Gravel is then to be placed over the distribution pipe to
provide a minimum of 2 inches of cover over the pipe.
o
A silt barrier must be installed between the final gravel
layer and the native soil backfill. Ensure the silt
barrier covers the entire gravel surface before placing
backfill.
o
Monitor tubes shall be of four (4) inch diameter and
installed approximately in the locations shown on the
design. The portion of the monitoring tube extending
through the gravel shall be perforated from the bottom of
the trench to the invert of the distribution pipe. This
is equivalent to the effective depth of the gravel as
noted on the design.
o
Backfill over the final gravel layer must not be less
than twenty-four (24) inches. Insulation must be
installed when the backfill depth is less than thirty-six
(36) inches. The finish grade over the trench must be
mounded to prevent the formation of a depression after
settling.
Page Three
Midway Subdivision, Lot lB
September 13, 1993
MINIMUM MATERIAL SPECIFICATIONS:
Any septic tank proposed for installation must be
constructed by a Municipally approved septic tank
manufacturer.
The following pipe materials are approved for use in
septic system installations in the Municipality of
Anchorage:
Type of PiPe
Perforated Solid
Cast Iron
ASTM D3034 (PVC)
ASTM F810 (HDPE)
ASTM D2662 (ABS)
Yes Yes
Yes Yes
Yes No
Yes Yes
Use of a type of pipe other than listed above must be
approved by the inspecting engineer.
o
Insulation shall be at least 2" thick extruded direct
burial polystyrene (Dow Chemical Company Styrofoam HI or
equal).
o
Septic tank inlets and outlets shall be fitted with
watertight couplings (Caulder, Fernco, or equal).
o
A permeable nontoxic silt barrier (Typar 3401, Mirafi
140N, or equal) must be installed between the final
leachfield gravel layer and the native soil backfill.
Ail leachfield gravel (sewer rock) shall be 0.5"-2.5"
screened gravel with less than 3% passing the #200 sieve.
When sand is being used as a filter material, it's
gradation specifications must conform to current M.O.A.
or D.E.C. requirements.
Page Four
Midway Subdivision, Lot lB
September 13, 1993
INSPECTIONS:
Typically there will be a minimum of three (3) inspections
required during the installation of the wastewater disposal
system. These inspections will occur as follows:
The first inspection must be conducted after the
excavation of ditches, pits, trenches, or beds and before
the installation of any gravel. A septic tank may be set
in place, but may not be backfilted before this
inspection.
The second inspection must be conducted after the
placement of the silt barrier, gravel, distribution
lines, standpipes, cleanouts, and insulation, but
before the placement of any other backfill.
o
The final inspection is to occur upon final grading
of the property.
Often there will be more than these 3 inspections required.
Especially with the installation of multiple trenches, sand
filters, pressurized distribution systems, etc. Thus, the
inspecting engineer is to be contacted at least 24 hours prior
to the start of construction. If necessary, a pre-
construction meeting will take place on-site.
Municipality of Anchorage
DEPARTMENT OF HEALTH & HUMAN SERVICES
825 "L" Street, Anchorage, Alaska 99502-0650
SOILS LOG -- PERCOLATION TEST
DATE PER
Township, ~anfle, Soction:
1
2
3
4
5
6
7
8
9
10
11
12
13-
SLOPE SITE PLAN
W~i~S GROUND WATER
wo
IF YES, AT WHAT
DEPTH?
Depth to Water A~er'
Monitoring?
//~'' Gross Net Depth to Net
Reading Date Time Time Water Drop
/ ,~/~,1~'~ ~ P~ .. ? ,, "+
1
14-
16
17
18
19
PERCOLAT ON RATE (minutes/inch) PERC HOLE DIAMETER~=.~--- ,
COMMENTS ~
PFRFORMEDB~'~Np~q~Ai~A~R.. ..... i / // ~ ~ CERTIFY THA/ IHI~ TEST WAS PERFORMED IN
'A:COR DAN C E ;ITH ALL STATE A~"~;~INE~~N THIS DATE. DATE:
72-~8 (Rev. 4/~) /