Sample Analysis Holding Time Container Preservation Checksheet - Virginia Department Of Environmental Quality - Water Division

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DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER DIVISION
SAMPLE ANALYSIS HOLDING TIME/CONTAINER/PRESERVATION CHECK SHEET
Revised 02/2015 [40 CFR, Part 136.3, Table II]
FACILITY NAME:
VPDES NO
DATE:
HOLDING TIMES [Note: Collection period (for composites) and Sample Collection
SAMPLE CONTAINER
PRESERVATION [Note: Preservation is to occur within 15
time (end of collection period) must be recorded on the COC.]
minutes of the end of the collection period.]
PARAMETER
APPROVED
MET?
LOGGED?
ADEQ.
APPROP.
APPROVED
MET?
CHECKED?
VOLUME
TYPE
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
pH
15 MIN.
Within 15 minutes
CHLORINE
15 MIN.
Within 15 minutes
DISSOLVED 0
15 MIN
Within 15 minutes
2
TEMPERATURE
IMMERSION
N/A - Immediately
STAB.
≤6
o
BOD
& CBOD
48 HOURS
C
5
5
≤6
o
TSS
7 DAYS
C
≤6
o
COD
28 DAYS
C+H
S0
,HCl, or H3PO4
2
4
pH<2
≤6
o
O&G as HEM (Method 1664)
28 DAYS
C+H
S0
or HCl pH<2
2
4
DRO – NS
DRO – None
TPH - DRO and GRO
GRO - ≤6
o
(SW 846 Methods: 8015, 8260 and 8270)
GRO 14 DAYS
C+H
S0
or HCl pH<2
2
4
o
FECAL COLIFORM / E. coli /
8 HRS
<10
C+0.008% Na
S
0
2
2
3
Enterococci
DECHLOR
AMMONIA
28 DAYS
≤6
o
C+H
S0
pH<2t
2
4
DECHLOR
TKN
28 DAYS
≤6
o
C+H
S0
pH<2
2
4
≤6
o
NITRATE or NITRITE
48 HOURS
C
≤6
o
NITRATE+NITRITE
28 DAYS
C+H
S0
pH<2
2
4
≤6
o
TOTAL PHOS.
28 DAYS
C+H
S0
pH<2
2
4
METALS
6 MONTHS
HNO
pH<2
3
Dissolved Metals: 0.45 μm filter
immediately
+6
Dissolved: 0.45 μm filter
Cr
28 DAYS
immediately.
Buffer solution plus NaOH within
24 hrs
PROBLEMS:
Note: All chemical preservation should be noted by the Permittee on the Chain of Custody.
Holding Times and Preservation References (VELAP except for Field Tests)

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