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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: PID Number: 0 a D —7z t - 1
Nam
�50-in4c,, LLD d Wastewater System: New ❑ Upgrade
Addr/si:5 7 ��� 1�1��r� ABSORPTION FIELD
Phone:
No. of Brooms:
LEGAL DESCRIPTION
Lot: Block: Subdivision:
rZi Lfe,^V1! w C—s�_Irc
Township: Range: I Section:
WELL: h(New ❑ Upgrade
Classification (Private, A,B,C): Total Depth: Cased To:
a3 O Ft. 10 5 ' Ft.
Drille
%r: ) - Date Drilled): Static Water Level:
�l fes! L LC CGk-�:L S Siz�v — Ff & L%S Ft.
Yield: Pump Set at: Casing Height Above Ground:
GPM Ft. .2— Ft.
SEPARATION DISTANCES
To Septic Absorption Lift Holding Public/Private
From Tank Field Station Tank Sewer Lines
Welh ! / I , —
i (Deep Trench ❑ Shallow Trench ❑ Bed ❑ Mound ❑ Other
Soil Rating:
Total Depth from original grade:
GPD/Sq. Ft.
G
Surface
Water
10 C/¢
1 L?
L. Z Ft.
Fill ad.��w dedd7 above original grade:
Lot
Line
1/ 3,
�Y ?
O Ft.
Ft.
Foundation
Number of lines:
Distance between lines:
., "
Curtain
Drain
iCO�d
f
_
.�✓
i (Deep Trench ❑ Shallow Trench ❑ Bed ❑ Mound ❑ Other
Soil Rating:
Total Depth from original grade:
GPD/Sq. Ft.
G
Depth to pipe bottom from original grade:
Gravel depth beneath pipe
- o r Ft.
L. Z Ft.
Fill ad.��w dedd7 above original grade:
Gravel le/n� the
1/ 3,
�Y ?
O Ft.
Ft.
Gravel width:
Number of lines:
Distance between lines:
., "
Total absorption area:
6AIZ;5
Pipe material:
0 30
SQ. Ft.
.�✓
Installer:
C7,- C_—,"64.
Date installed:
q - .26 " 96,
TANK
itic
❑ Holding ❑ S.T.E.P.
-turer.
Capacity in gallons:
.0- �1
Number of Compartments:
LIFT STATION
Size in gallons:
"Pump on" level at: J;94ir6p off' level af'� High water alarm at:
Electrical Inspections performed by:
Remarks: I BENCH MARK
Location and Description:
Inspections performed by: XN D Ev,q ir),ce_req Dates:1st 0 a%- ` C
3 2nd
L -7-lR-,�_0/7
Department of Health and Human 5 rvices approval
Reviewed and approved by. Date: - 9 "/
Assumed Elevation:
ENGINEER'S SEAL
Nib
"gyp
•�9 I
AS -BUILT SYSTEM DETAILS/S-ITE PLAN
LOT 1, BLOCK 3, RIVERVIEW EST, S/D
Permit SW960195
' PID#050 721 19
e�
�o-
co E
2O MT
� C° THO °
42'
OF ALSlk
4 72.21 BOH
DKY
'A 9 TH ;*
I
SCALE: NTS
KE T M. D / -'TM ? Z�• 1 '� ""CJ
` cF
7116 w� � PREPARED FOR: KNE ENGINEERING
�p/ LEE RAYMOND 20441 PTARMIGAN BLVD
1 \fid / LEE'S CUSTOM DESIGN EAGLE RIVER, AK, 99577
A�FESSIOT3Ati 11517 OLD GLENN HWY. (907)696-6111/Fax (907)696-8111
EAGLE RIVER, AK 99577
(907)694-8565 DATE: 3/9/97 DRAWING #
SCALE: AS NOTED 96043-S1
0
4 Bvt"
0Z
W= FINAL.6RAUL
ozd d
S� TOP F BANK
88,44
0
�"19
CL
CAP
PORT
A
-C=13.8
FILTER FABRIC
B
-C=13.1
F]
A
-D=22.0
B
-D=19.2
® WELL
A
-E=37.8
B
-E=29.1
�84,47
A
-F=52.4
84.42
B
-F=55.5
SEWER ROCK
6.2'
SCALE: 1' = 50'
42'
OF ALSlk
4 72.21 BOH
DKY
'A 9 TH ;*
I
SCALE: NTS
KE T M. D / -'TM ? Z�• 1 '� ""CJ
` cF
7116 w� � PREPARED FOR: KNE ENGINEERING
�p/ LEE RAYMOND 20441 PTARMIGAN BLVD
1 \fid / LEE'S CUSTOM DESIGN EAGLE RIVER, AK, 99577
A�FESSIOT3Ati 11517 OLD GLENN HWY. (907)696-6111/Fax (907)696-8111
EAGLE RIVER, AK 99577
(907)694-8565 DATE: 3/9/97 DRAWING #
SCALE: AS NOTED 96043-S1
0
0 00
C4 a WW
0Z
W= FINAL.6RAUL
ozd d
90 28 ORIGINAL GRADE
88,44
0
�"19
CL
FILTER FABRIC
v ' 2
VARIES
F]
�84,47
84.42
�
SEWER ROCK
6.2'
78.21
42'
OF ALSlk
4 72.21 BOH
DKY
'A 9 TH ;*
I
SCALE: NTS
KE T M. D / -'TM ? Z�• 1 '� ""CJ
` cF
7116 w� � PREPARED FOR: KNE ENGINEERING
�p/ LEE RAYMOND 20441 PTARMIGAN BLVD
1 \fid / LEE'S CUSTOM DESIGN EAGLE RIVER, AK, 99577
A�FESSIOT3Ati 11517 OLD GLENN HWY. (907)696-6111/Fax (907)696-8111
EAGLE RIVER, AK 99577
(907)694-8565 DATE: 3/9/97 DRAWING #
SCALE: AS NOTED 96043-S1
.... P.01
· . . . ~ ~ ~ ~ ....4
PAGE 1 OF 1
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND HUMAN SERVICES
P.O. BOX 196650, 825 "L" STREET, ROOM 502
ANCHORAGE, ALASKA 99519-6650
ON SITE WELL AND WASTEWATER DISPOSAL sYSTEM PERMIT
PERMIT NUMBER:SW960195
DESIGN ENGINEER:KND ENGINEERING
OWNER NAME:FANTER LLOYD H
OWNER ADDRESS:il517 OLD GLENN HWY.
EAGLE RIVER, AK. 99577
PARCEL ID:05072119
LEGAL DESCRIPTION:
RIVER VIEW ESTATES BLK
3 LT 1
LOT SIZE: 71679 (SQ. FT.
NUMBER OF BEDROOMS: 4 THIS PERMIT:
DATE ISSUED: 7/15/96
EXPIRATION DATE: 7/15/97
THIS PERMIT IS FOR THE CONSTRUCTION OF:
DISPOSAL FIELD /SEPTIC TANK / WELL SYSTEM
ALL CONSTRUCTION MUST BE IN ACCORDANCE WITH:
THE ATTACHED APPROVED DESIGN.
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 (iSAACS0) .
THE ENGINEER MUST NOTIFY DHHS AT LEAST 2 HOURS
PRIOR TO EACH INSPECTION. PROVIDE NOTIFICATION BY
CALLING 343-4744 ( 24 HOURS ) (NOT REQUIRED FOR WELL ONLY PERMIT)
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
THE FOLLOWING SPECIAL PROVISIONS.
SPECIAL PROVISIONS:
ENSURE THE REQUIRED SETBACK DISTANCE BETWEEN THE
DISPOSAL FIELD AND SLOPE(S) EXCEEDING 25% ARE MET.
ISSUED BY: ~ ~
DATE:
DATE:
20441 PTARMIGAN BLVD.
EAGLE R~VER, AK 995PZ-SY36
(907)696-6111/FAX (907)696-8111 ................................. t
July 5, 1996
Municipality of Anchorage
Dept. of Health & Human Services
On-Site Services Section
P. O. Box 196650
Anchorage, Alaska 99519-6650
Subject:
Sewer and well permit
Lot l, Block 3, Riverview Estates
Gentlemen:
On June 28, 1996, we conducted soil testing on the subject property for the installation of a
new well and sewer system. Due to the quality of soils found, a single testhole was
excavated and tested. The results of that test are attached.
This lot has had some previous excavation in preparation for a foundation. As a result, there
is additional fill over the proposed installation site; this will be removed prior to the actual
installation of the system. The soil test itself was performed in an area beyond the toe of the
fill. This condition will not impact the installation, and final grading will adjust the grade
from the house to the system. Care has been taken to provide a minimum of 50' separation
from the system to slopes in excess of 25 % along the northeast and northwest property lines.
The south fork of Peter's Creek is northeast of this project and greater than 100' away from
the proposed installation site. There is no other surface water source within 200'. The
development of this lot will have no adverse impact on other properties in the area.
If you have any questions, please contact me at 696-6111/FAX 696-8111.
Respectfully submitted,
KND Engineering
Kenneth M.
d d
1250 GAL
SEPTIC --
TANK
CONNECT TB 4' SOLID FROM HOUSE
WAST WATER DISP SSAL SYSTEM
LOT 1, BLOCK 3, RIVERVtEW EST, S/B
FINISHED GRADE
UNCLASSIFIED FILL FROM EXCAVATION
2" HD INSULATION..>
/
SCREENED ROCK
TOTAL DEPTH FROM ORIGINAL GRADE 9'
42'
/.jFILTER FABRIC
NB WATER BBSERVED
NB WELLS WITHIN
OF SYSTEM
VACANT
PREPARED FOR:
LEE RAYMOND
LEE'S CUSTOM DESIGN
11517 OLD GLENN HWY,
EAGLE RIVER, AK 99577
(907)694-8565
,ILS
4 BDRMS X 150 GPO - 600 GPD,
600 GPD/i,2 GPD PER SQ. FT, = 500 SQ. FT.
500 SO, FT./2 ' WIDE X 6' DEEP= 42'
USE TRENCH 42' L, 2' W, 6'D GRAVEL
TOTAL DEPTH OF SYSTEM WILL BE 9.0' BELOW
ORIGINAL GRADE,
2~ HD INSOLATION TO BE INSTALLED OVER
FIELD AND SEPTIC TANK,
CONTRACTOR TO VERIFY AND INSURE 27..
GRADE FROM HI]USE,
KND ENGINEERING
20441 PTARMIGAN BLVD
EAGLE RIVER, AK, 99577
(907)696-6Ill/Fox (907)696-811!
DATE: 7-4-96 ORA'WING ~
Municipality of Anchorage
DEPARTMENT OF HEALTH & HUMAN SERVICES
825 "L" Street, Anchorage, Alaska 99502-0650
SOILS LOG -- PERCOLATION TEST
LEGAL DESCRIPTION:
DEPTH
2
3
4
5
6
7
8
9
10-
11
12
13-
14-
15-
16-
17
18
19
2O
~..' ~
I~,,~ ~ ~ %~' ~'~
-~49:~ ~"
....
DATE PERFORM
Township, Range, Section:
SLOPE SITE PLAN
WAS GROUND WATER
ENCOUNTERED?
S
IF YES, AT WHAT
OEPTH?
E
Oeplh to Water After / ?//~//,~,
Monilorino? Date:
Reading Date Gross Net Depth to Net
Time Time Water Drop
COMMENTS
PERCOLATION RATE -~, / (m,nutes/,nch) PERC HOLE DIAMETER ~ ,4,
TEST RUN BETWEEN /TZ' ~¢ FT AND '"~' ~ FT
PERPORMEOBY: /~'4///'~ ~.,},"~'~'.~-/~k~~/ I //¢~_~/-'~,,'~.~''/~4/~-~///'~' CERTIFY THA~ T~tS TEST WAS PERFORMED IN
ACCORDANCE WITH ALL STATE AND MUNICfPAL GUIDELINES IN EFFECT ON THIS DATE. DATE:
72-008 (Rev. 4185)
Dece~mber 29~ 1978
~7780568
Scott ~4c Eni~re &
Frank Shields
2801 ~li~ma A~ue
Anchoraqe ~ Alaska 99503
Subject~ Lot 1 Block 3 Rive~ View Estates Subdivision
A Permit -;~.~ ~ .
..... · ued by 'kltlS d. epartment fer well and/or
sewer system has expired.
Pern~its are iss%~ed on a calendar year basis~ as stated
on the permi%~ }3y '~l~;horlty of Municipal ordinance~
If you have drilled the well~ a well loq should be
sent to this department 'to document the install~tion
date. .
ill there are ally zu~."~her questions, please contact
this office at 264~4720o
Sincerely,
Les No Buchholz~ )2. S.
Senior" · - ·
Envy~.onmen hal Specialist
LNB/1 j w
enc~ copy of P~rmit
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SOILS LOG
MUNICIPAI. ITY OF ANCHORAGE
DEPARTMENT OF IlEAL-FI-! AND ENVIRONMENTAL PROTECTION
' r:J PERCOLATION
Potlch 6[$[J0, Anchotag~ Alaska 99502 276-222~ TEST
SOILS LOG ~ PERCOI.ATION TEST
Pt:-F;FORM E D FOR:
D/VFE PEFIEORMED: · .
LI!GAL DESCtalP~ ION:
SI_OPE SIrE PLAN
(FEE~j
1
3
4
6
7
8
9
lO
]2
16
17-,
19
2o
WAS GROUND WA'FER S
ENCOUNTERED~ L
O
P
IF YES, AT WHAT E
[gEP'FH?
Gross
Time
Time
Depth lo Not
I'EItCOLAIION RArE ......................... (minutes/h~chl
7ESI RUN I]EIWEEN F'I AND ..... F'I
COMMEN'I S
PEt~EO/'tMED BY: - I ,
CERTIFIED BY: ' ~. ' .... ~ ' ' ~' DATE:
/'200~ (7 76)
W
V
0
mun
pality of Ane id, hor�"e
On-Site,Water and Wastewater Prog SGL 7 2017
(907) 343-7904 3: &
lowA N�'s •� .
CERTIFICATE OF ON-SITE SYSTEMS I /Z OV 11�1\1:6
01 6 8 L
Parcel I.D. 050-721-19 Expiration Date: l �(�V
HIK491�� �Skl
Complete legal description RIVER VIEW ESTATES BLOCK 3, LOT I
Location (site address) 21525 RUSHING RIVER CIRCLE, EAGLE RIVER, AK 99577
Current Property owner(s) LLOYD H. FANTER Day phone
Mailing address
Real Estate Agent
PO BOX 770048, EAGLE RIVER, AK 99577
2. TYPE OF DWELLING:
[Z Single Family (w/wo ADU)
❑ Duplex
Fj Multiple Dwellings (Single Family and/or Duplex)
Day phone
3. NUMBER OF BEDROOMS:
4
TYPE OF WASTEWATER DISPOSAL:
4. TYPE OF WATER SUPPLY:
Individual
0
Individual Well
Holding Tank
El
Individual Water Storage
D
Community
D
Community Class Well
El
Public Sewer
❑
Public Water System
0
WaiverNariance request for: Distance:
COSA to be released to the engineer, unless
y
requestea o ine engineer.
— - -
As certified by my seal affixed hereto and as of the validation date shown below, I verify that my investigation,
based on pro dures outlined in the Certificate of On -Site Systems Approval Guidelines for this application,
shows that t 0. voter supply and/or wastewater disposal system is (are) safe, functional and adequate
for the number of bedrooms and type of structure indicated herein. 1 further verify that based on the information
obtained from the Municipality of Anchorage files and from my investigation and inspection, the on-site water
supply and/or wastewater disposal system is(are) in compliance with all applicable Municipal and State codes,
ordinances, and regulations in effect at the time of installation.
Name of Firm ARCTERRA CONSULTING INC. Phone 868-3791
Address 20441 PTARMIGAN BLVD., EAGLE RIVER AK 99577
Engineer's Printed Name KENNETH M. DUFFUS Date 7/26/2017
WITH THIS COSA ARE PAID IN FULL AT OR BEFORE CLOSING. Engineer's Comments: This investigation was completed in compliance with
ADEC and MOA regulations. The assessment of the condition of the well and septic applies only to the conditions as of the day tested.
The flow and absorption rates may change due to subsurface conditions that may not be observed from the surface, changes inland use,
local soil characteristics, groundwater levels that may fluctuate during the year and the water usage of the family being served by the
system. The operational life of all well and septic systems are subject to these various and dynamic characteristics and are outside the
control of the evaluator of the well and septic system. Therefore, ,ArcTerra can not give any estimate of how long a system will function
satisfactory for current or future occupants or can ArcTerra guarantee that no unseen
encroachments, deficiencies or discrepancies exist.
6. DSD SIGNATURE
.I/ System #1 Approved for bedrooms.
System #2 Approved for bedrooms.
Disapproved.
Conditional approval for bedrooms,
pI
f 7116 ,
U"I
or
f FF.aST . \L
with the following stipulations:
WASTEWATER
By: Original Certificate Date:
The Municipality of Anchorage Development Services Division (DSD) issues Certificates of On -Site Systems Approval (COSA) based only
upon the representations given in paragraph 5 by an independent professional civil engineer registered in the State of Alaska. The Municipality
of Anchorage is not responsible for errors or omissions in the professional engineer's work.
7. ATTACHMENTS:
COSA Checklist X Nitrate Advisory
Septic System Advisory Arsenic Advisory
Well Flow Advisory Other
COSA blue sheet 10-10-12.doc
Rmore than iseptic system ismnthe lot:
COSAChecklist #__�__
Structure served by this system
ill, mu"IMMA
Legal : RIVER VIEW ESTATES BLOCK Parcel ID: 050-721-19
A. WELL DATA
Well type pRVT If A, B.orCprovide PVVS|D#
Date completed 812811y96� Sanitary seal (Y/N)y
Total depth _230 ft. Cased ho1{8.5_ft.
FROM WELL LOG
Date oftest 8126/1996
Static water level 48 ft.
Well production 4 9-P.M-
VVATERSAMPLE RESULTS:
Coliform _|NEG cu!oniee/1O0 mL Nitrate /L
Arsenic:.— Date ofsample: T/1912017
Well Log 00N\
Wires properly protected (Y7N)y
Casing height (above ground) _10_in.
AT INSPECTION
711912017
51 ft.
4.28 g.p.nn.
Collected by: ARCTERRA
Tank Date installed 9128/1996
Tank size 1250 gal. Number ufCompartments 2 C}eanouhn(Y/N)
Foundation cleanout (YYN)y Depression over tank (YYN) High water alarm (YYN)
DatoofpumpinQPumper
Date installed &128M99S Soil rating (o.pd.m2nr*o«`dnn)j.2__
Length ft. Width 3 ft.
Total depth 12.3 ft. (Measured 7/19/17) Eff. absorption area 520ft2
Date ofadequacy test _//19V207Results (Pass/Fei0_]PASS
__
System type DEEP TRENCH
iU—
Gravel below pipeJA'4L–'a— ft.
Monitoring tube y Depression over field @
For 4 bedrooms
Fluid depth mabsorption field benatest O_in. Water added _820 gal. New depth _j2_in.
Elapsed Time: 1290 min. Final fluid depth 1iin. Absorption rate >=600g.pd.
Any rejuvenationtreatment (past 12mo](YYN&type) N |fyes, give date
D. LIFT STATION
Date installed
"Pump on" level at
Datum
in.
Size in gallons _
"Pump off' level at
Cycles tested
in
Manhole/Access (Y/N)
Nigh water alarm level at
Meets alarm & circuit requirements?
E. SEPARATION DISTANCES
WELL ON LOT TO:
Septic tank/lift station on lot - 100'+ On adjacent lots
Absorption field on lot _ 100'+ _ On adjacent lots _100'+
Public sewer main 75'+ Public sewer manhole/cleanout
Sewer /septic service line 25'± Holding tank
Animal containment areas 50'+—_`_Manure/animal excrete storage areas 100'+
SEPTIC/HOLDING TANK ON LOT TO:
Building foundation _5'+ _ Property line 54 Absorption field 5'+
Water main 10'+ Water service line 10'+ Surface water 100'+
Wells on adjacent lots __..100'¢_.-_.__________
ABSORPTION FIELD ON LOT TO:
Property line _ 10'+ Building foundation 10'+ Water main _„10'+ _
Water Service line 101+ Surface water 100'+ _ Driveway, parking/vehicle storage 10'+
Curtain drain _50'+AqoNEwN
_KKq__L Wells on adjacent lots 100'+
F. COMMENTS
G. ENGINEER'S CERTIFICATION
I certify that I have determined through field inspections and
review of Municipal records that the above systems are in conformance
with MOR COSA guidelines in effect on this date.
Engineer's Printed Name KENNETH M. DUFFUS
Date 712412017
COSA canary sheet 2-6-15.doc
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Municipality of Anchorage
Development Services Department
Building Safety Division
On -Site Water and Wastewater Program
4700 Elmore Street
P.O. Box 196650 Anchorage, AK 99519-6650
www.muni.org/onsite
(907) 343-7904
I
Certificate of On -Site Systems Approval# OSC171321
A Certificate of On -Site Systems Approval inspection and test of potable
water was recently conducted on the well water supply on Block 3, Lot I of
River View Estates subdivision. This inspection revealed a nitrate
concentration of 7.83 milligrams per liter (mg/L) was reported for the
property's well water sample. The Environmental Protection Agency (EPA)
has established a maximum contaminant level (MCL) of 10.0 mg/L for
public drinking water systems. While private wells are not subject to this
regulation, EPA standards are based on existing health information and can
therefore be used to gauge the relative quality of water from private wells.
Please see the attached "Nitrate Fact Sheet" for important information
regarding nitrate.
This advisory must be attached to all copies of the subject Certificate of On -
Site Systems Approval.
a a r
From Northern Testing Laboratories, Inc.
Nitrate is a negatively charged compound of nitrogen and oxygen, which is very soluble
in water. Nitrate is not readily filtered or otherwise removed in the soil and can pass
rapidly into ground water wells.
SOURCE: Nitrate is a major component of fertilizer and wastewater. Often the nitrate is
in the form of ammonia or protein first, which through contact with oxygen and certain
bacteria, converts to the oxidized form known as nitrate. Sources of nitrate from
wastewater include urea, ammonia cleaners, food solids, and bacterial cells. It may also
result from the breakdown of organic matter buried in the soil.
TOXICITY: Nitrate is generally not toxic to adults or children over the age of two or
three years, but is associated with a potentially fatal infant disease called
methemoglobinemia. In the digestive system of young children, nitrate converts to
nitrite, which can pass through the intestinal wall into the blood stream. There it
combines with the hemoglobin and interferes with the ability of the blood to carry
oxygen. For this reason, methemoglobinemia is referred to as "blue baby" disease. The
EPA limits the concentration of nitrate in public drinking water supplies to 10 mg/L. The
standard has been lowered from a previous level of 45 mg/L set by the US Public Health
Service and the World Health Organization.
TREATMENT: due to its solubility in water and negative ionic charge, filtration and
other common home water treatment systems such as softening or iron filtration does not
readily remove nitrate. The best method for limiting nitrate in well water is source
control. This can include avoiding overdosing of fertilizer near the well and maintaining
good separation distances between septic tank leach fields and the well. A special anion
exchange filter that contains a media with a strong affinity for negatively charged ions in
water, or by a reverse osmosis treatment system or distillation can remove nitrate.
TESTING: Nitrate analysis is usually done by one of the several "wet chemical"
methods using a spectrophotometer to read the final color endpoint. Specific ion
electrodes also can be used to detect the activity of nitrate in water. This laboratory uses
several different wet chemical methods approved under the public water supply
laboratory certification program. They also have test kits available, which the laboratory
uses to perform an inexpensive "screening test", and with which the homeowner can
monitor the change in nitrate levels from their well. They recommend comparing the test
kit results against a certified analysis from the lab occasionally to verify the accuracy of
the kit. We recommend using a specially prepared bottle that has been rinsed in
hydrochloric acid for collecting samples.
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