HomeMy WebLinkAboutELMORE BLK 2 LT 3A
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 Wastewater Disposal System Permit
Permit Number: OSP241261
Work Type: Septic Upgrade
Tax Code Number: 01817153000
Site Legal Address: ELMORE BLK 2 LT 3A G:3036
Site Mailing Address: 4640 DE ARMOUN RD, Anchorage
Owner: HYSOM RAYMOND W & LESLIE G
Design Engineer: PANNONE ENGINEERING SERVICES
This permit is for the construction of:
Effective Date:
Expiration Date
Lot Size in Sq Ft:
Total Bedrooms:
1,
[ parlment
9/20/2024
9/20/2025
80858
Q Disposal Field Q Septic Tank ❑ Holding Tank ❑ Privy ❑ 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
JZEee#ved-By: 10
f `J
Issued By:
Date:
Date:
4
MUNICIPALITY OF ANCHORAGE
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. 018-171-53
Property owner(s) Raymond W & Leslie G Hysom
Mailing address
Site address 4640 De Armoun Road
Legal description (Sub'd., Block & Lot) Elmore Block 2 Lot 3A
Legal description (Township, Range & Section)
Lot Size - 80,858 _Sq, Ft. Number of Bedrooms
Day phone
In
APPLICATION IS FOR:
APPLICATION IS AN:
TYPE OF DWELLING:
(Z all that apply)
Absorption Field
[_X�
Initial D
Single Family (SF)
FRI
(w/wo ADU)
Septic Tank
Upgrade nX
Duplex
❑
(D)
Holding Tank
❑
Renewal
Multiple Dwellings
❑
Privy
❑
(SF and/or D)
Private Well
❑
Water Storage
❑
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.
NEWS"
(Signature of property owner or authorized agent)
Permit/Rush Fees:
Date of Payment: 2-'r Z_
Receipt Number:
Permit No. D 'S
Permit App_-'- '- ;
Waiver Fees:
Date of Payment:
Receipt Number:
Waiver No.
Pannone Engineering Services LLC
Steven R. Pannone, Principal
Registered Professional Engineer
E-mail: steve@panengak.com
Mailing: P.O.Box 1807, Palmer, AK 99645
Telephone: (907) 745-8200 FAX: (907) 745-8201
Municipality of Anchorage
Development Services Department
On-Site Water & Wastewater Program
4700 Elmore Road
Anchorage, Alaska
Subject: Elmore Block 2 Lot 3A
Septic System Upgrade Permit Request
This is a design narrative for a permit to install a septic system upgrade on the subject property. The proposed upgrade will
serve an existing four-bedroom (4) house. This lot and surrounding lots are served by private wells. The existing 1250-gallon
septic tank is to be exposed and verified to be in sound operating condition. If the existing septic tank is found to be suit able,
the proposed upgrade will consist of the installation of a diverter valve to the existing field and lift station to the proposed soil
absorption system. If the existing septic tank is found to be compromised, the proposed upgrade will consist of a new 1500-
gallon STEP tank and proposed soil absorption system.
1. Soils:
A test hole was performed on this lot by Pannone Engineering Services, LLC on 08/05/2024. Groundwater was not observed
during the excavation of the test hole, and bedrock was not encountered. Groundwater was observed in the test hole monitor
tube after 7-days at a depth of 7.5’ BGS on 08/14/2024. Ground water was later observed within the test hole monitor tube at a
depth of 11.2’ BGS on 09/12/2024, and 9.5’ BGS on 09/20/2024. PES feels the 08/14/2024 ground water depth to depict the
seasonal high, due to record rainfall in August. The September readings are significantly lower. Based on the results of the
percolation test and overall soils appearance an application rate of 1.2 gpd/SF was used for the design of a conventional
wastewater treatment system in the area of the test hole.
2. Soil Absorption System Design.
a. See Sheet 1 of the design package.
3. Surface Water:
There is no surface water within 100 feet of the proposed septic system.
4. Topography:
See attached site plan for area topography.
5. Drawing Markings: The Drawings are marked “For MOA Review Only”. When written notification that the review is
complete and no further comments are received from MoA On-Site Department, the note will be removed and “For
Construction” drawings will be issued.
The proposed installation will not affect the future development of this or the surrounding lots.
If you have any questions or concerns, please contact me at (907) 745-8200.
Sincerely,
SRP
Steven R. Pannone, P.E. F. ASCE
Owner/Civil Engineer
20 September 2024
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP241261, Deb Wockenfuss, 09/20/24
PA
N
N
O
N
E
E
N
G
S
V
C
,
L
L
C
(
C
.
I
.
1
0
8
8
)
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP241261, Deb Wockenfuss, 09/20/24
PA
N
N
O
N
E
E
N
G
S
V
C
,
L
L
C
(
C
.
I
.
1
0
8
8
)
2.2. SCOPE OF WORK:INSTALL SYSTEM IN ACCORDANCE WITH THE ATTACHED DESIGN AND SPECIFICATIONS.
11.2 FEET
11.2 FEET
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP241261, Deb Wockenfuss, 09/20/24
PA
N
N
O
N
E
E
N
G
S
V
C
,
L
L
C
(
C
.
I
.
1
0
8
8
)
COMMENTS: Test hole excavated by A+ Home Services, Inc.
PERFORMED BY: PANNONE ENGINEERING SERVICES, LLC. I CERTIFY THAT THIS TEST
WAS PERFORMED IN ACCORDANCE WITH ALL STATE AND MUNICIPAL GUIDLINES
IN EFFECT ON THE DATE OF THIS TEST.
·1.13 (min/inch)
·6"
·2 FT AND 3 FT
·
SOILS LOG & PERCOLATION
TEST
Municipality of Anchorage
On-site Water and Wastewater
REVIEWED FOR CODE COMPLIANCE
OSP241261, Deb Wockenfuss, 09/20/24
N
0
0
°
0
7
'
0
0
"
W
3
8
7
.
4
2
'
N 89° 46' 30" E 208.71'
S
0
0
°
0
7
'
0
0
"
E
3
8
7
.
4
2
'
S 89° 46' 30" W 208.71'
~
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Department of Environmental Quality
333QCStreet
Anchorage, Alaska 98S03
INSPECTION REPORT
ON-SITE SEWAGE DISPOSAL SYSTEM
NAME
MAILING ADDRESS C2
PHONE
LOCATION
LEGAL DESCRIPT
SEPTIC TANK:
DISTANCE /
NUMBER OF
FROM WELL
MANUFACTURER MATERIAL
2_
COKxpARTmENTS__-____
|mG}DE LENGTH—/O___'
/
INSIDE vv|oTH______-L/QU/o
DEPTH_____.L|WU|D CAPACITY ALL0mS.
SEEPAGE PIT: /
_�*�
NUMBER |T3 _-Z___ � DIAMETER ____Onvv|DTH_�-. LEmGT* --
/ DEPTH
LINING MATERIAL / Cn|BS|ZE. o|*mEr�n___-ocpT*�,o|3TANCEFROM. WELL
TOTAL EFFECTIVE
BUILDING FOumo*T|Om___-. NEAREST LOT LINE _____ *eSORpT|0m AREA (WALL AREA) SQ. FT.
ADDITIONAL ABSORPTION
�
TYPE ^= �ON5TRUcT0m
BUILDING NEAREST NEAREST
rOumopJ|0m_____'. uJTUmE____-__. SEWER LINE
CESSPOOL ________. OTHER SOURCES
APPROvEO________DISAPPROVED _________REmaRnS
/w5TAU-EoeY. `
PIPE MATERIAL:
LOT SLOPE:
REMARKS:
DEPTH DISTANCE FROM:
SEPTIC SEEPAGE
' T*mK_____. SYSTEM .
O|AGRANyOFSYSTEK8
DATE APPROVED _L
F'E~I T NO.
['1 El r-~ 'Ir ~-: [,~"~ FI L I T ITl I__--I F t---I r'J L--: I-,~.a F-.' Fl ~_~ E
[:,EF'FtP. Tr,IENT ~_,F HERLTH RN[> EriVIF;C~NHEh~TRL r'F'.OTECTION
25.t6 E. TUDOR RI:,., RiqCHORRL3E, RE. 9~507
iDl'-4--S I TE SEL,IEF: P'EF-:r4 I T
767(12 )
RF'F'L I CRNT
LOCRT I ON
LEGRL
DERRr. IOL N F:ORD
L-~A E:2 ELHORE SUB
F'. 0. E:O;:.: 2302 RNCH
LOT SIZE
.uc.~c. SI;!LIRRE 'FEET
c;,,,-T:~.t IS: TRENCH
TYPE OF SOIL RBSOP. E:TICIH _~ ....
i'.IR>~Ir. IUH I'IUF1E:ER OF BEE:,ROOHS = 4
SOIL RRTING (SC! FT/E:R): -135
THE F:EQI_IIF:ED SIZE OF THE SOIL RE,_,ORFTIOi"i S'¢$TEH IS:
E:,E P T t-I-- :..1_2 L E I'-.i t_3 T H = 46 6 F-: R '..-' E L C, EF'TH= (;
THE LENGTH DIr. IEfISION 15 THE LENGTH <Iii FEET) OF THE TREtlCH OR DRRINFIELD.
THE DEPTFI OF 8 TF;:EIqCH OR PIT IS THE DISTRNCE BET!4EEN THE SURFRCE OF THE
GE:OOi"lE:, Ri"ID THE BOTTOH OF THE EXCFIVFITION <IN FEET).
THERE IS N0 SET I,IIDTH FOR TRENCHES.
THE GRRVEL DEPTH IS THE HIIqlHUrl DEPTH OF GRRVEL BETHEEIq THE OUTFRLL PIF'E
FIND THE BOTTOft OF THE EXCRVRTIOIq (.IN FEET).
SEPT I C TRI'41---:_--q I ZE= J-2$1Z.~ GFILLC~I'-.IS
T I-.-i~_-~ .-'. 2 ~. I; I'-.ISF'EOT I '---]r-4S I----IRE r'~:EalJ I F-.'E D,
E;RCKFILLIHG OF Ri'PT' _~'-~TEH I,IITHOUT FIHRL IHSF'ECTION RND RPF'RO'v'RL E:Y THIS
DEPRRTHENT !'fILL E:E SUB.TEOT TO PROSECUTION.
rllrllr,lLl~,l DISTRNCE BETHEEN FI HELL RND RNY ON-SITE SEHRGE [:,ISF'OSRL SYSTEF! IS
.tOO FEET FOR R PRIYRTE HELL OR 2ElO FEET FOR Fi PUBLIC [,,fELL.
SPECIFICRTION:~ RI'ID COi'ISTF,'UCTIOtl DIRGF,'FIHS aRE Ft'v'RILFIBLE TO II'.iSURE PROPER
I N:~TFILLRT I
F'ERI-1 I T %."RL I I~:, . FETE: I]l'-,IE 'T'EIZlF.: FF-iOM I SSI_IE
I CERTIFY THaT -' . ~
±: I AH FRf'IlLIRR I.IITFI THE REC!LIIREHENTS FOR ON-SITE :.ENER_.¢ .c AND HELLS A:,¢ SET
"' II
FORTH E,T THE H_NICIFRLIT~' OF RNCHORRGE.
2: I 14ILL INSTRLL THE SYSTEH IN ACCORDRHcE HITH THE CODES.
~:: I LIN[.EF. zTFIND THRT THE OH-SITE SEHER S'T'STEH !'IRY F:iEQLIIRE ENLRRGEF1ENT IF THE
RESIDENCE IS F:EHO[>ELED TO' INCLUDE !'lORE THRi'I 4 BEC4ROOF1S.
- '- · __ "- ............ ....
RPF'LIL. RrIT GEOF.'~£ H r,`fu coy - ' .... .
,,
DEARMOUN ROAD
House
T.H. 1
LdExisting septic Tank
8-27-76 T.H.
GRAVELLY SAND
GRAVEL w/some SAND (GP)
Occasional Cobbles
and Boulders
Very Loose
GRAVELLY SAND w/Trace
SILT (SP)
I~o~ Tar
SANDY GRAVEL (GP)
Occasional Cobbles and
Boulder
Loose
tl.5'
SAND w/SOME GPAV~L
and Trace Silt (SP)
Loose
SANDY GRAVEL (GW)
L5'
SAND w/SOME GRAVEL AND
Trace Silt (SP)
No Water Table
This log represents subsurface soil
conditions within Elmore Subdivisio~
Block 2, Lot 3A, Section 34, T12N,
R3W, gnchorage, Alaska
CKD:
DATE:
SCALE:
R&M CONSULTANTS, INC,
George McCoy
Anchorage, Alaska
I[F.B
GRID:
iLOWG..O. A-O .
100
.¸%
(~ MUNICIPALITY OF ANCHORAGE "*: !"'
· DEPARTMENT OF HEALTH & HUMAN SERVICES.
' .' -' , ' " :DivislonofEnvironmentaISe~lces · ~ .,: ,,~ ~..
,, .. :..'.,- .', . ........ On-SiteServcesSection , .
· , ;.- ~,.:~;~ . ~: P.O..B.ox 196650 . Anchorage,'Alaska ,. 99519-6650 , i .: '
;,. ..... .... , . : , 343-4744
:'-' : ' CERTIFICATE OF HEALTH AUTHORITY
~' '~ '?,' APPROVAL FOR A SINGLE FAMILY DWELLING ~.'
1. GENERAL INFORMATION
C0mpletelegal des(~Hptlon t&oT "~ :'~Loc~-. ~-- ' F-_Lf-4 o P-..'=--
Location (site address or directions) /~I.(~ H O ~.~ ~ ~'v~ o Ot~t '~.c~.
Property owner ~-~<3 xl
Mailing' addres~ .... L[- h. q O
Lending agency
Mailing address
Dayphone ~L~5- c~l'~
Day phone
NOTE: If community well system, provide written confirmation from State AD~C attest-
lng to the legality, and status of system, " ......- ,,', ' '
4. "'TYPE OF WAS*TEWATER DISPOSAL: ......... "-
Community on-site ..............
· ;i. NOTE: 5". If community wastewater s,wtem, provide written confirmation from State ADEC
Unless otherwise requested, HAA will be held for pickup. '..'.,
~L/' ~ ":~!" -"' ....
2.
NUMBER OF BEDROOMS:
3. TYPE OF WATER SUPPLY: . *. *
'.:. - .~:..._: ~lndi¥idualWell ......
5. ENGINEER "~ ~"' . . ~': "~:~
As ce~h~ b~ my ~1 affix~ berne and as o(t~e ~lidat[on date shown ~ ow, I ve~ t~at mv
Inv~flgatmn of thls H~lth A~hon~ Approval apphmbon sho~ that the on-s~to water supply
an~or ~temter dts~l s~em Is ~fe, ~q~onal and ad~ua~e for the numar of ~r~ms
and ~ of stm~ure Indi~t~ heroin. I ~her veH~ that ~ on ~e Info~ation ob~in~ from
the Munici~li~ of Anchorage fil~ and f~o~ my lq~igation and Ins~ion, the on~ite water
,upply ancot wa~towat~r di~l ~em I, in eompli~n~ ~h all ~unlcipal and 8~to
ordina~,... _ _ . ___ ..~d r~ulatio~ In eff~ on the date of this ins~ion. ,
........ . . . .. ~ , ~ .- . .
. . .. ........... .~ ~.~~ ..,,. .
' ;.~nd~tlonal appro~l for ' .~r~ms, wi~ the'following ~ipulations:'~
Municipality of Anchorage
Department Of He:~lth and Human Services
HEALTH AUTHORITY APPROVAL CHECKLIST
LegalDescription: L~T,.~A-'~k"I E'I~,,,.~-. ParcelI.D.
A. Well Data
Well type "~
Log present (Y/N)
Total depth
Sanitary seal (Y/N)
Date oflest
· Staticwaterlevel
Wellflow
Pump level1
Cased to
FROM WELL LOG
If A, B, or C, attach ADEC letter. ADEC water system number
Date completed I ~t ~,,, ~ .7.. Driller
~ c~ C) Casing height
Wires pmpedy protected (Y/N)
AT INSPECTION
g.p.m. ,-~
SEPARATION DISTANCES FROM WELL TO:
Septic/holding tank on lot~ "-/./-7/
Absorption field on lot
Public sewer main
Sewer service line
; On adjacent lots
; On adjacent lots
I~ublic sewer manhole/cleanout
Petroleum lank
WATER SAMPLE RESULTS:
Colitorm ¢ Nitrate
Date of sample:
;,~, 0 ~:~ Other bacteria '/ {/','Z~'~-''//~'¥)
Collected by: "~-"~..~
B. SEPTIC/HOLDING TANK DATA
Date installed Ic~"7~, ,~.~'~ r~ Tank size ~ ~L~C) Compartments
Cleanouts (Y/N} y Foundation cleanout (Y/N) 1'~ Depression (Y/N)
High water alarm (y/N) tT',/'/~. Alarm tested (Y/N)
Date of pumping (~/.~:-~-/q-~ ' Pumper J ~ *,~ c~/..~. ~
SEPARATION DISTANCES FROM SEPTIC/HOLDING TANK TO:
Well(s) on lot '7'
To property line ~ /~
Surface water/drainage
On adjacent lots '~ I ~ Foundation ~-"7
Absorption field {-,f Water main/service line
CONTINUED ON BACK PAGE
C. UFT STATION I')///~_
Date Installed
Size In gallons
Vent (y/N)
High water alarm level
Meets MOA electrical codes (Y/N)
'Pump on" level at
Manufacturer,
Manhole/Access (Y/N)
'Pump off' Level at
Cycles tested
SEPARATION DISTANCE FROM LIFT STATION TO:
Well on let On adjacent lots
.Suflace wat(~r
D. ABSORPTION FIELD DATA
Dateimtalled, E/7/7~ Soil rating (GPD/Ft2) J~r~ Systemty?e,
Length ~'..';7. W'~th ~ Gravel thickness ~, Total depth
Total absorption area /~ ~ ~/ Cleanout present (Y/N) ~/ DepreSSion over field (Y/N)
Date of .adequ~'y test t~/~/~/~/ ' Results (pess/fail) '~ for
Water leval In also.ion field ~fore test L4 ~,- ~ Nter test ,~' ~
i=er°xlde treatment (past 12 months) (Y/N) P'~ I! yes. give date
On adjacent lots
· Surface water
Curtain drain
F- ENGINEER'S CERTIFICATION
SEPARATION DISTANCE FROM ABSORPTION FIELD TO:
Well on lot ~'-'~'-: ~q On adjacent lots I ,.~ 0 '/' Property line
To building foundation '7 7 To existing or abandoned system on lot
~ ~ Cutbank I'~ e vt -~ Water main/service line
q.~..Z .~.~j~; j. ~.~..~ Driveway, parking/vehicle storage area
I cer~fy that I have checked, verified, or conformed to all MOA and HAA guidelines in effe~.t on l~e ~tate of this ins~ec~on.
Waiver Fee $
Date of Payment
Receip~ Number
HAA Fee $ ~
Date of Payment
Rece~ Number
Rick Mystrom,
Mayor
Municipality of Anchorage
Department of Health and Human Services
825 "L" Street
P.O. Box 196650 Anchorage, Alaska 99519-6650
September 26. 1994
Tobben Spurkland, P.E.
6751 W. Dimond BIvd
Anchorage, Alaska 99502-3904
Subject:
Waiver Request for: Lot 3A, Block 2, Elmore Subdivision
Waiver Approval: # WR940052
Dear Mr. Spurkland,
Your application for waiver(s) from the required separation distances is
approved as follows:
Well to Tank
Well to leachfield
Leachfield to sudace water
74 feet
98 feet
92 feet
This waiver approval applies to lhe existing septic system only. Any future
upgrades or Health Authority Approvals will require all separation distances be
met or another approval be obtained from this department.
Program Manager
On-site Services.
Ijm: #6
MUNICIPALITY OF ANCHORAG~
Department of Health and Human Services
On-site Services Section
Waiver Review Worksheet
WR# WR940052 PID# 018-171-53 HA# HA94041! Permit #
Date Received: 09-26-94
Legal Description: .Lot 3A
Engineer: Tobben Spurkland.
Applicant:
6751 West Dimond Blvd..
Reqqy McCoy
Waiver Requested:
Criteria: 1.
Well to tank -- 74ft,
W~ll to leachfleld ---98
Geology:
A. Water Table
B. Soil Sorption
C. Permeability
D. Water Table Gradient
E. Horizontal Separation
TOTAL:
Points
2. Special Conditions:
3. Other:
Waiver is Granted: / Waiver is NOT Granted:
List Conditions or Reasons for above:
Date:
00204
00320
Rec #: Amount:
N~e of Reviewer '~
$625.00 09-07-94
$295.00 Date Paid: 09-23-94
T.SPURKLAND P.E.
6751 W. DIMOND BLVD.
ANCHORAGE, ALASKA 99502-3904
(907) 248-5095
Municipality of Anchorage
Division of Environmental Health
Department of Health and Social Services
820 L Street
Anchorage, Alaska 99501
September 20, 1994
Subject:
Gentlemen;
REQUEST FOR WAIVER OF SEPARATION DISTANCES FOR
PRIVATE WELLS TO SEPTIC TANK,
PRIVATE WELL TO DRAINFIELD
SURFACE WATER TO DRAINFIELD
LOT 3A BLOCK 2 ELMORE S/D
We are submitting a request for waivers from the separation distances stated in Title 18, Alaska Administrative Code,
Chapter 80.020.
During a IIAA inspection of this property we measured the following separation distances were found:
Well to Septic tank standpipe 74 feet
Well to leachfield standpipe 98 feet
Leachfield stand pipe to creek 92 feet
This septic system was installed in 1976 as a replacement to a system that was installed in the late 60's. It was inspected
by a Municipal Inspetnor who waived the distance to the creek, reported 100 feet between the well and the drainfield,
and approved of the installation of the new tank at the same location as the existing one. The original tank was installed
74 feet from the well.
No well log exist for this property, however logs from two adjacent properties show clay and rocks to 100 feet or more.
Static water level is 60 to 80 feet.
A ten foot bank separates the well and the septic system. Overland flow to the well is not possible.
The septic tank was exposed on September 9, 1994. Mechanical couplings had been used and were still in place. No
leaks or sU'uctural strains were observed.
A water quality sampling of the well water on 8/09/94 indicated 2.06 mg/I nitrates and 1 colony of bacteria,(OB). A
resample on 8/15/94, showed no bacteria.
The granting of these waivers are justified as follows:
I. The installation of this septic system was inspected and approved my a Municipal Health Inspector. Thc notes on
the inspection report clearly show that the inspector considered the possibility of contamination of the creek or the well
by encroaching on the required separation distances trivial. The septic system could have been installed with the proper
separation distances if there had been the slightast ooncem about contamination. If it can be shown that the Municipal
inspector was in error and that contamination is a real possibility, then the septic system should be replaced at no cost
to the present or future owners.
2. The required separation distance of 100 feet are arbitrary and cannot be supported through technical or
scientific arguments. Common sense will suppor~ the idea that a minimum separation distance is both prudent and
desirable. Common sense will also support the view that if 100 feet is safe, so is 99, and 98. A separation distance of
100 feet will probably prevent septic system effluent contamination in 99.999% of all cases.
There have been recorded instances where a well have been contaminated by septic system effluent. In all cases this
have happened where the ground consist of fractured bedrock or hardpan that will channel effluent into streams.
Contamination may also occur if the sabsurface soil consist of clean gravel or rock deposit with no sand or f'mes. When
the subsurface soil consist ora mixture of gravel, sand and fine materials, the septic system effluent is effectively filtered
and rendered harmless in a very short distance. Both the ADEC and the Munlcipal Health Depar~nent recognizes the
filtering ability of sandy material by actively supporting and promoting the installation of a 2-foot sand filter as a
superior alternative to the standard soil absorption systems. So confident are the two agencies of the filtering
capabilities of the sand filter that they have reduced the required separation distance to groundwater and bedrock by
50% and 33% when the sand filter is used.
The static water level for the well on this lot was measured at 90 feet. If this well are like most ofthe wells in the
Anchorage area, the well casing extend for at least another 20 feet below the static water level. The ground surface at
the well site is approximately 10 feet hlgher than the septic system elevation. Assuming that the effiuent from the septic
system can travel through the soil and reach the open end of the well casing a travel distance of more than 140 feet
would be required for fluid from the trench and 124 feet for any fluid that would escape from the tank. These distances
are 70 and 62 times greater than the 2 feet of filter sand in the recommended sand filter. The liquid depth in the trench
was found to be 46 inches, a strong indication that the in situ soil contains enough sand and fines to act as an effective
filter and barrier to effluent migration. The conclusion must therefore be that contamination ofthe well is not possible
because or,he location of the septic system. Since the elevation of the well head is 10 feet higher than the septic system
overland flow and the resulting contamination is not possible.
3. The direct line between the Irench and the creek is 92 feet. Again this is 46 times the filter thickness, and no
contamination is possible through soil migration of sewage effluent.
4. Overland flow of effluent. There are no defined drainage patterns between the Irench and the creek.
Concenmted overland flow of surface water is not evident. The area between the trench and the creek is surfaced by
maintained lawn and natural vegetation. Any possible effluent would soak into the ground within a very short distance
of the surfacing point.
In conclusion: There are no valid arguments why these waivers should not be granted.
Yours
2
ToP
J
I
I
-I
t
I
50 ?5 1~ 1~5 15'~
SCALE: I' = 50 FT.
TOBBEN SPURKLAND P.E.
203 W 15TH. AVENUE
ANCH. AK. 99501
LOT SA BZOClt' 2 ELJIORE $/D
4640 fl£ARMOUN DRIV£
PEGGY McCOY
SEPTIC SYSTEM LAYOUT
DATE: SEPI'. 6, 1994
SHEET: I/I GRID: 3036
co~ . ~/1, $ coC_lc z,