HomeMy WebLinkAboutBIRCHHAVEN S12678Onsite File
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September 27, 2022
PO BOX 240773
ANCHORAGE, AK 99524
522-7773
677.7766 (FAX)
FORGECIVIL.COM
MOA Development Services, On -Site Water & Wastewater Program
4700 Elmore Rd
Anchorage, AK 99507
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49
7-
Benjam�rySchiller
CE 5
e*, .. 9 27292. • �G���
Subject: Birch Woods Sub. Lot 1 & 5 (New Birchhaven Lots 1-3)
Well & Septic Feasibility Study
Dear On -Site Services Engineer:
The owner of the above lot intends to subdivide lots 1 and 5 of the Birch Woods Subdivision into
3 smaller parcels. We have investigated the lots and would like to provide the following
information.
The properties are each able to support septic systems, and there are approved permits available
for each lot. These permits each show the proposed plans of the lots including contours, wetlands,
drainage features and water bodies on each property as well as surrounding properties. The permits
also show existing wells and septic systems on adjacent lots and demonstrate adequate separation
distances from proposed wells and septic systems as well as the alternate sites.
Well and nitrate information was investigated for the surrounding properties and is collected in
table on the next page. There are no properties within 250' with nitrate levels recorded above
5mg/L, and the surrounding wells indicate that there is enough capacity in the aquifer to support
wells on each of the proposed properties without causing significant problems with the flow rate
of the existing wells.
Legal Description:
Depth(ft): Yield(GPM): Nitrates(u6/L):
Birch Woods, Tract A
140 2
0.0
Birchwood Loop, Lot 1
183 2
0.0
Birchwood Loop, Lot 2
204 2
0.38
Birchwood Loop, Lot 3
340 2
0.0
Birchwood Loop, Lot 4
82 10
0.0
Birchwood Loop, Lot 5
No Information
0.27
Birchwood Loop, Lot 6
185 3
0.24
Kahn, Lot 2
No Information
0.0
Travis Estates, Lot 42A
No Information
0.0
Travis Estates, Lot 42B
265 2
0.0
Based on this information, we request approval for this subdivision.
Sincerely,
Benjamin Schiller, PE
0
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DEPTH
( feet)
i-
3 -
4-
5
6-
7-
8-
9-
10-
11-
12-
13-
14-
15-
16-
17-
18-
19 -
SOILS LOG AND PERCOLATION TEST
enciNe[airsc
LEGAL DESCRIPTION: BIRCH WOODS LOT 5 (PROPOSED LOT IB)
PERFORMED FOR: KOUROSH PARTOW
DATE: 3/24/22 PARCEL ID#: 051-243-14
I TEST HOLE 1
am
D— '-
D— PERC TEST LOCATION
SW/SM (SILTY SAND w/
OCCASIONAL AGGREGATE)
MUCL (SILTY CLAY)
NO WAS GROUND WATER ENCOUNTERED?
N/A , IF YES @-% WHAT DEPTH?
9-0* DEPTH TO WATER AFTER MONITORING
4/5/22 DATE OF MONITORING
COMMENTS:
DATE
READING
START TIME
NET TIME
(MINUTES)
DEPTH TO
WATER
(INCHES)
NET DROP
(INCHES)
3/24/22
1
10:00
2:20
0
616
616
2
10:05
3:23
0
616
616
3
10:09
4:57
0
6 6
66
4
10:15
6:03
0
616
66
5
10:22
6:05
0
6 %
616
6
10:29
6:10
0
6 %
616
6" DIAMETER PERC HOLE
PERCOLATION RATE: 1.1 (MIN/INCH)
SITE PLAN
TECHNICIAN: J. MILLETTE
DEPTH
(feet)
2-
3-
4-
5-
6-
7-
8-
9-
10-
11-
12-
13-
14-
15-
16-
17-
18-
19-
SOILS LOG AND PERCOLATIO�TEST
enaiaiEaac
LEGAL DESCRIPTION: BIRCH WOODS LOT 5 (PROPOSED LOT IB)
PERFORMED FOR: KOUROSH PARTOW
DATE: 3/24/22 PARCEL ID#: 051-243-14
TEST HOLE 2
1' OB
D— PERC TEST LOCATION
SW/SM (SILTY SAND)
ML/CL (SILTY CLAY)
NO WAS GROUND NATER ENCOUNTERED?
NSA IF YES @ WHAT DEPTH?
8•0 DEPTH TO WATER AFTER MONITORING
L•/5/22 DATE OF MONITORING
COMMENTS:
DATE
READING
START TIME
NET TIME
(MINUTES)
DEPTH To
WATER
NET DROP
INCHES)
(INCHES)
3/24/22
1
10:45
1:49
0
616
6 0
2
10:48
1:38
0
6 0
616
3
10:51
1:52
0
616
616
4
10:54
1:58
0
616
616
5
10:57
1:49
0
616
616
6
11:01
1:58
0
616
616
6" DIAMETER PERC HOLE
PERCOLATION RATE: <1 (MIN/INCH)
SITE PLAN
TECHNICIAN: J. MILLETTE
DEPTH
(feet)
1-
2'
3-
4-
5-
6-
7-
8-
9-
10-
11-
12-
13-
14-
15-
16-
17-
18-
19 -
FA
LEGAL DESCRIPTION: BIRCH WOODS LOT 5 (PROPOSED LOT 5A)
PERFORMED FOR: KOUROSH PARTOW
DATE: 3/24./22 PARCEL ID#: 051-243-14
TEST HOLE 3
aPERC TEST LOCATION
SW/SM (SILTY SAND)
1
MUCL (SILTY CLAY)
NO WAS GROUND WATER ENCOUNTERED?
N/A IF YES a% WHAT DEPTH?
5.0' DEPTH TO WATER AFTER MONITORING
G/5/22 DATE OFMONITORING
COMMENTS:
DATE
READING
START TIME
NET TIME
(MINUTES)
WATER
(INCHES)
NET DROP
(INCHES)
3/24/22
1
9:40
00:35
0
616
616
2
9:42
00:41
0
616
616
3
9:44
00:38
0
616
616
4
9:46
00:38
0
616
616
5
9:48
00:40
0
6 %
616
6
9:50
00:38
0
616
616
6" DIAMETER PERK HOLE
PERCOLATION RATE: <1 (MINANCH)
SITE PLAN
TECHNICIAN: J. MILLETTE
DEPTH
( feet)
1-
2-
3-
4-
5-
6-
7-
8-
9-
10-
11-
12-
13-
14-
15-
16-
17-
18-
19-
aPERC TEST LOCATION
SW/SM (SILTY SAND)
MUCL (SILTY CLAY)
NO WAS GROUND WATER ENCOUNTERED?
N/A IF YES u% WHAT DEPTH?
5.5' DEPTH TO WATER AFTER MONITORING
4/5/22 DATE OF MONITORING
COMMENTS:
DATE
READING
START TIME
NET TIME
(MINUTES)
DEPTH TO
WATER
(INCHES)
NET DROP
(INCHES)
3/24/22
1
12:34
10
0
316
316
2
12:47
10
0
216
216
3
12:58
10
0
216
2:!
16
4
1:09
10
0
212
212
5
1:20
10
0
216
216
6
1:31
10
0
216
216
6" DIAMETER PERK HOLE
PERCOLATION RATE: 3.47 (MINANCH)
SITE PLAN
TECHNICIAN: J. MILLETTE
F
DEPTH
(feet)
2-
3-
4-
5-
6-
7-
8-
9-
10-
11-
12-
13-
14-
15-
16-
17-
18-
19-
SOILS LOG AND PERCOLATION TEST
K N G a N{( 4 I N G
LEGAL DESCRIPTION: BIRCH WOODS LOT 5 (PROPOSED LOT IA)
PERFORMED FOR: KOUROSH PARTOW
DATE: 3/24/22 PARCEL ID#: 051-243-14
TEST HOLE 5
am
:I PERC
'-
PERC TEST LOCATION
SW/SM (SILTY SAND)
ML/CL (SILTY CLAY)
NO WAS GROUND WATE2 ENCOUNTERED?
N/A IF YES (c WHAT DEPTH?
7' DEPTH TO WATER AFTER MONITORING
4/5/22 DATE OF MONITORING
COMMENTS:
DATE
READING
START TIME
NET TIME
(MINUTES)
WATERC
(INCHES)
NET DROP
(INCHES)
3/24/22
1
1:16
10
0
516
51s
2
1:29
10
0
416
41 -
3
1:41
10
0
416
416
4
1:53
10
0
416
416
5
2:05
10
0
4 2416
6
2:15
10
0
416
4 2
6" DIAMETER PERK HOLE
PERCOLATION RATE: 2.42 (MIN/INCH)
SITE PLAN
TECHNICIAN: L. TIDWELL
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