HomeMy WebLinkAboutWAGNER S12583Onsite File
Wagner
#S12583
Feb. 15, 2022
Municipalities of Anchorage
On-Site Water and Waste Water Section
4700 Elmore Rd
Anchorage, Alaska
Phone 343-7904
Re: Proposed Wagner Subd. Lots 1-2 Soils & Well Report
Legal: Wagner TR 2 (MOA S- 12583)
To Whom it may concern:
This letter is to answer the questions concerning the new On-site septic and wells on the above
proposed new subdivision. From the Municipality of Anchorage (MOA) data files the nitrite levels
and well flows have been shown on the attached site plan, C1. Of the three surrounding
properties two have nitrate data available plus the original lot. The maximum nitrate level found
was .688 mg/L from the original lot Wagner TR 2 which is low.
All of the surrounding wells have been located on the site plan, to verify that the new proposed
well will not impact the neighboring lots. A new proposed well has been shown for planning
purposes, good water is available just not in huge amounts. If the new well flow rate is less than
one GPM then a storage tank can be added to the new house. The site plan also shows the total
depths and flow rates for the surrounding lots. The average flow rates vary between 0.6 and 3.0
gallons per minute and the depth is 75 to 347 feet deep. All of the neighboring wells have flow
rates over 0.6 GPM. From the surrounding wells logs it is apparent some water is available on top
of the bedrock, Park Hills #1, Blk 1, Lot 1, 0.6 GPM, but more water is available in the bedrock as
found on T12N R3W SEC 35 PARCEL 18, 3 GPM and Wagner TR 1, 2 GPM. The very old
original well on Wagner TR 2 is also getting water from the top of the bedrock at about 95 feet
depth. From the surrounding well data good water is available if the well is drilled into the bedrock
between 250 and 350 foot depth. This will bypass the shallow water on top of the bedrock which
is supplying the low producing wells and access the deeper water. If necessary an existing well
can be fracked to increase the flow rate which has proven to be very successful to increase well
flow rates.
A reserve area of 12,000 square feet has been shown (see site plan C1) per the perc test
requirements. The soils and well flows are good and will support a on-site septic and well system.
Justification for allowing this subdivision to be approved by the On-site Department is the soils are
excellent and the proposed new well has good water available with no adverse affects to any of
the surrounding properties. Please call me with any questions or comments concerning this
proposal.
Sincerely,
Michael N. Anderson, P.E.
4661 Natrona Ave.
Anchorage, Alaska 99516
Phone 345-3377
Fax 345-1391
DESIGNED:
DRAWN:
DATE:
CHECKED:
SHEET
DRAWING TITLE:
2/15/2022
SUBDIVISION
PLAN
VICINITY PLAN
SCALE: 1"=100'
WELL, 2GPM,275
WELL, 1.3/3.0GPM, 160/347'
WELL, 4 GPM
TH#2
TH#1
EXISTING SEPTIC
SYSTEM
SEPTIC
SEPTIC
SEPTIC
NITRATE 0 mg/L
NITRATE NO DATA
NITRATE 0.4mg/L
SEPTIC
WELL, 0.75GPM,95'
NITRATE , NO DATA
WELL,0.61GPM, 223
NITRATE 0.5 mg/L
EXISTING CREEK
100' CREEK OFF-SET
SEPTIC
WELL, 0.8 GPM,>75'
NITRATE 0.688 mg/L
LARGE FLAT SPOT, W/
CONTOURS OF 2' TYP.
POSSIBLE NEW WELL
LOCATION
SLOPE
SLOPE12,000 SF RESERVE
AREA FOR SEPTIC
SLO
P
E
SLOPE
Municipality of Anchorage
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Development Services Department
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On -Site Water and Wastewater Section
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P.O. Box 196650 Anchorage, AK 99519-6650
www.muni.org/onsite
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(907)343-7904
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Soil's/ Log -Percolation Test � <;� � ......•° �,:'-
Performed For: f t le, Ft ; � V. Date Performed:
Legal Description: 'Z Township, Range, Section:
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5-
11
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COMMENTS
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Site Plan
WAS GROUND WATER
ENCOUNTERED? 7\1 a
S
IF YES, AT WHAT DEPTH? L
Depth to Water After O
Mwitorin9? E
� P
Date:: 7.
Reading
Date
Gross Time
Net Time
Depth to Water
Net Drop
ft
2f
21 S
!r
2, c
u
�-
PERCOLATION RATE ( 'Z, (vtlnut .s h) PERC HOLE DIAMETER C_
TEST RUN BETWEEN 'L_ FT AND_FT
Y
PERFORMED BY: _ (, i/ /'� I CERTIFY THAT THIS TEST WAS
PERFORMED IN ACCORDANCE WITH ALLSTATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE:
Municipality of Anchorage �••t t g'� ;
Development Services Departmentj-
On-Site Water and Wastewater Section rte•' .'7 t,
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�a 4700 Elmore St. H
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P.O. Box 196650 Anchorage, AK 99519-6650 ......... ... ,
W W W. m uni.OEg1onsite r
(907) 343-7904 •.' • • • • • • • .... .
illi Vo•• MICHAEL N..AAN'DCRSON •r9^ F
Soils Log - Percolation Test
Performed For: G- /� /
r'l Yt' !l � C' � 1N' Dale Performed,
Legal Description: I/V (A 9 i%I ec "%' R Zi Township, Range, Section: _
Py'wp®S4•cL W aghrV- Slope
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Depth
(Feet)
2-
3-1
-3
4-
7-
6- k�
9 Srt/r r--'(
11
13-
�+0 7r n" .
16-
17-
18-
19-
20 -
COMMENTS
WAS GROUND WATER
ENCOUNTERED? f
5
IF YES, AT WHAT DEPTH? L
Depth W Water After D
Monitoring? to E
Date: 2 l
F,
' """"^ —.• ' /TJ VEKU HULL DIAMETER (D �•
JEST RUN BETWEEN _i FT AND r- FT
k' -s. i t91 Arrn,I
PERFORMED BY: t A /qVt I CERTIFY THAT THIS TESTWA
PERFORMED IN ACCORDANCE WITH ALLSTATE AND MUNICIPAL GUIDELINES IN EFFECT ON THIS DATE. DATE: / ki Z