WQ0002096_Monitoring - 08-2016_20160929

Environment 1, Inc.
P.O. Box 7085,JJA4 Oakmont Dr.
GreenvilleNC 278.58
CHAIN OF CUSTODY RECORD
Page 1 of
environmentl inc.com
DISINFECTION
CHLORINE NEUTRALIZED AT COLLECTION
Phone [phone] • Fax [phone]
CHLORINE
CLIENT: 377 Week: 1
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CHEMICAL PRESERVATION
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AHOSKIE NC 27910
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CLASSIFICATION:
❑ WASTEWATER (NPDES)
❑ DRINKINGWATER
❑ DWQ/GW
❑ SOLID WASTE SECTION
CHAIN OF CUSTODY (SEAL) MAINTAINED
DURING SHIPMENT/DELIVERY
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SAMPLES COLLECTED BY:
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SAMPLES RECEIVED IN LABAT °C
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RECEIVED BY (SIG.)
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Sampler must place a "C" for composite sample or a "G" for
PLEASE READ Instructions for completing this form on the reverse side. N ° 319400
FORM #5 Grab sample in the blocks above for each parameter requested. __

SAMPLING INSTRUCTIONS AND FORM COMPLETION
FAI,URE TO PROPERLY CHILL, CHEMICALLY PRESERVE, COLLECT IN PROPER BOTTLE
TYPES, MEET REQUIRED HOLDING TIMES, NEUTRALIZE CHLORINE IN CHLORINE
SENSITIVE SAMPLES, AND SEAL COOLERS WITH TAPE WILL RESULT IN SAMPLES BEING
REJECTED BY THIS LABORATORY AS PER NORTH CAROLINA REGULATORY CODE.
1) Samples not falling within the required guidelines will need to be re -collected. The client will be contacted and informed of any
deviation and asked to collect another set of samples. The client may request the laboratory to proceed with the analyses of the current
samples. Any samples analyzed outside of the required guidelines will be "qualified". This means that a note will be included on the
sample result and "Chain of Custody" specifying the deviation. The laboratory is also required to send a letter to the State noting the
deviations.
2) Sample Temperature. Samples for compliance monitoring must be chilled with wet ice to a temperature of 6C or less. Freezing is
not permitted. Samples delivered to the lab shortly after collection may not have had enough time to be chilled below 6C. In this case the
temperature at time of collection must be noted in the space provided. The samples will meet the requirements of the regulation if there
is a temperature drop from the time of collection until received in the lab. Regardless, all samples should be packed in wet ice using as
much ice as will fit in the cooler.
3) Sample Chemical Preservation. Many samples require a chemical preservation such as Sulfuric Acid or Sodium Hydroxide. The
laboratory will either provide the preservative in the sample bottle, or in the case of 40 ml. Volatiles Vials, provide a bottle of Acid with
detailed descriptions on how to collect the sample. Never rinse sample bottles before collecting samples. Any residue or liquid in the
bottle is required for proper chemical preservation. The lab must verify proper chemical preservation upon arrival in the lab and will note
this information in the spaces provided on the front of this form.
4) Chlorine Neutralization. Some samples require that any Total Chlorine Residual be removed at the time of collection. The lab will
provide the proper neutralizing agent in the sample bottle when technically possible. There are some samples (Total Kjeldahl Nitrogen
and Ammonia Nitrogen) where this is not possible due to interferences between the required chemical preservation (Acid) and the
dechlorinating agent. Therefore, these samples must be de -chlorinated at the time of collection before being placed in our sample bottles.
Sodium Thiosulfate is the chemical of choice to neutralize chlorine. It must be added to your sample and then the sample checked for
Total Chlorine before the sample is poured in our bottle. Facilities using chlorine for disinfection should have a means of measuring Total
Chlorine. Non -chlorinated sample sources will not need to be checked. The person neutralizing the chlorine must put his initials in the
"Chlorine Neutralized at Collection" row on the front of this form above the proper parameter. Samples such as Coliforms (which have
Thiosulfate in the bottles shipped from the lab) will be checked for proper neutralization upon arrival in the lab. It is also required that you
note the "Total Chlorine at Collection" on the front of this form for any sample locations applicable. This value would be before any
neutralization is performed.
5) A "C" for Composite Sample or a "G" for Grab Sample should be placed in the box for all requested parameters. Grab temperatures
as well as Composite start dates and times can be recorded in the "comments" section.
6) Other information required to be completed by the client are:
Collection Date and Collection Time for each sample location Temperature at Time of Collection
Printed name of person or persons collecting samples Signature, Date, and Time samples are relinquished
Other added sample locations and analyses required Type Of Disinfection
Deletion on the form for any samples which are not needed (example: dry upstream location)
Any other information felt to be pertinent should be included in the "Comments" section
CONSIDERATIONS:
Coliform and Enterococci samples have a holding time of 6 hours from time of collection to time of analysis. Therefore, samples should
be collected as late in the day as possible to allow enough time for transportation, checking in at the lab and analysis.
BOD, Nitrate, Ortho Phosphorus, Settleable Matter, Turbidity, Color, and MBAS samples have a 48 hour holding time. The lab reserves the
right to establish required sample collection and delivery dates in order to meet the required holding times.
CAUTION
Sample bottles may contain acids or other corrosive and potentially harmful chemicals. Laboratories are required to add these chemicals
for certain analyses in order to comply with EPA preservation requirements. Use extreme care when opening and handling the shipping
container and bottles. If any chemical should get into your eyes, on your skin or on your clothes, flush liberally with water and seek medical
attention. Material Safety Data Sheets (MSDS) are available upon request which specify proper handling and personal protection.