Standard Operating Procedures.pdf

Attachment C

Standard Operating Procedures

Managed Recharge Water Quality Monitoring

Effective Date:

09/28/2023 ii

Table of Contents

Contents

General Information

Purpose

Summary of Procedures

Safety

Equipment and Supplies

Procedures

Well Purging

Sample Collection

Collection Method:

Unfiltered Samples (Part of the bottle kit)

Filtered Samples (Part of the bottle kit)

Storage of Samples:

Shipping and Submitting Ground Water Quality Samples

Shipping Method:

Local Submission Method:

E. Coli Detection

Quality Assurance/Quality Control

Decontaminating Field Equipment

Blanks and Replicate Samples

Attachments

Attachment A. Sampling Equipment Attachment B. Field Notes Attachment C. Sample Submission Form Examples

General Information

Purpose

The Eastern Snake River Plain Aquifer Comprehensive Aquifer Management Plan (CAMP) was passed into law in 2009 recommending a long-term program for managing water supply for the Eastern Snake River Plain Aquifer (ESPA). The Idaho Water Resource Board (IWRB) was tasked by the Idaho Legislature to develop and operate a managed recharge program to recharge 250,000 acre-feet per year on average. Managed recharge sites that are not part of a canal system as defined by the Idaho Department of Environmental Quality (IDEQ) must have an approved Ground Water Quality Monitoring Program as documented in the Guidance for Developing a Ground Water Quality Monitoring Program for Managed Recharge Project by Land Application (IDEQ, 2017a). This document provides the Standard Operating Procedure (SOP) that the IWRB requires for collecting groundwater and surface water quality samples in accordance with IDEQ regulations.

Summary of Procedures

Field technicians should follow procedures outlined in this SOP to collect ground water quality samples. A brief summary of these procedures is as follows:

• Before visiting any sites, check with IWRB representative to determine what sites and constituents need to be sampled

• Begin site visit by purging well for approximately 30 minutes

• Wait until field parameters have stabilized, then record reading

• While wearing nitrile gloves, prepare and label sample bottles

• Collect unfiltered samples then filtered samples in provided bottles

• Place all samples into zip top bags and store in a cooler with ice

• Deliver bacteria groundwater samples to an IDEQ certified laboratory within 30 hours of collection

• Ship non-bacteria groundwater samples to IBL within 14 days of collection

• Photocopy field notes and send originals to IWRB representative.

Safety

Care should be taken when conducting field work to ensure injuries and property damage are avoided. Well sites can have electrically charged equipment which may include exposed wiring, motors, pumps, panels, fencing, and/or pivots. In addition to general field safety, more specific safety concerns need to be considered when collecting water samples. Field technicians should be cautious when transporting and using preservatives such as nitric acid and sulfuric acid.

Although preservatives have been diluted, most are still corrosive and can burn skin and/or clothing. Avoid carrying preservatives in clothing (i.e., in pockets) and dispose of empty vials after use.

Equipment and Supplies

Attachment A contains a list of equipment and supplies needed to conduct water quality sampling following IWRB Managed Recharge Program SOPs. Preservatives and samples should always be stored on ice in coolers. Standards should be kept near room temperature. Transport standards in a cooler, keep out of the sun, and add/remove small blue ice packs to keep near room temperature if needed.

Procedures

Well Purging

Wells sampled in the Managed Recharge Program are equipped with a pump either already connected to a power system or connected to a portable generator. Purging is the process of pumping water from a well prior to sampling to ensure the collected sample is representative of ground water from the aquifer and not stagnant water, and is unaffected by the well, borehole, or piping system. This process will typically take field samplers 20-30 minutes. If the well is pumping on arrival, the purging process may only take 15 minutes. Monitoring wells dedicated to managed recharge sites are usually not electrified. A generator will be needed, normally 230v to operate a ¾ to 2 horsepower pump.

Purge Method:

1. Determine which hydrant should be used for sampling. Homeowners or previous field notes can direct field samplers to the correct hydrant. If the correct hydrant is unknown, use the following rules to guide hydrant selection:

a. Always sample from a hydrant supplying water that has not previously passed through water treatment or pressure tank systems.

b. When multiple options exist for the above rule (a), select the hydrant closest in proximity to the wellhead.

c. If the homeowner requests a particular hydrant, sample from the requested hydrant if rule (a) above is satisfied regarding water treatment and pressure tank locations.

2. Attach a 2-way splitter to the hydrant. Attach a hose to one end of the splitter, with the other end being used to attach Tygon® tubing for sampling.

3. Turn on water and adjust flow as necessary in order to have a steady, moderate discharge.

Route water away from the well to avoid creating muddy conditions or impacting the homeowner’s property. If necessary, connect a portable generator to the well to power the pump.

4. On the field notes, record the time well purging began. Field notes explanation and example are attached as Attachment B.

5. Calibrate field equipment (pH, specific conductance, and dissolved oxygen meters) per manufacturer's instructions. The pH probe contains the temperature sensor. Place the probes for each field instrument in the flow-through chamber.

6. Record water temperature, specific conductance, pH, and dissolved oxygen measurements every five minutes, as follows:

Field Parameter Stabilization

Field Parameter Stability Criteria

Temperature (in degrees Celsius) ±0.2 °C

Specific Conductance (SC) (microseimens µS/cm)

±5% for SC ≤ 100 µS/cm ±3% for SC > 100 µS/cm pH (standard units) ±0.1 unit

Dissolved Oxygen (DO) (mg/L) ±0.3 mg/L

7. When readings stabilize over three consecutive measurements (using the above “Stability

Criteria”), record final values on the field notes and proceed with sample collection. Record the time of sampling on the field notes. If readings do not stabilize after 30 minutes, note on the field notes, and proceed with sampling.

Due to excessive quantities of water generated from purging, maximum purge time should not exceed 30 minutes to protect landowner interests.

Sample Collection

Sampling techniques described in the following sections are designed to minimize effects on the chemical and physical integrity of the sample. Adherence to these procedures helps provide a representative sample of ground water, and high quality data for the Managed Recharge Program.

Collection Method:

1. Set up a clean folding table near the sampling point to prepare samples and keep other work materials off the ground.

2. Transport sampling bottles and equipment (splitter, Tygon tubing) in a clean cooler to the sampling table. Always transport sampling bottles in a clean cooler. Only remove bottles from cooler to label bottles, preserve bottles, and collect samples; immediately place them back in the cooler when not handling them and after sample collection. Bottles should never touch the ground, or come in contact with foreign surfaces or objects.

3. Use disposable nitrile gloves when labeling, preserving, and collecting all water samples.

a. If two or more people are working together, separate tasks to minimize chance of sample contamination.

b. If working alone, change gloves frequently, especially between tasks of collecting and preparing the sample.

4. Do not allow the bottle rims, or the inside of the bottle caps, to touch anything, including fingers, ground, Tygon tubing, hydrant, etc.

5. Prepare sample bottles. Using a permanent marker, label one of the sample bottles in the bottle kit with date, station name, sample time, and field sampler’s initials.

6. Attach Tygon tubing to the 2-way hose splitter. Direct and maintain a low level flow to the Tygon sample tubing. Let water run through tubing for a few seconds before collecting sample.

If sampling from the Tygon tubing is not possible, remove the hose splitter and collect samples directly from the hydrant. If neither method is possible, use discretion in choosing a sampling point. If alternative methods are used, document on field notes.

7. Ensure all samplers are wearing nitrile gloves. Collect water samples by filling supplied laboratory bottles from the Tygon tubing that is attached to the hose splitter. Use the following bottle-specific collection methods, collecting unfiltered samples before filtered samples:

Unfiltered Samples (Part of the bottle kit)

a) Common Ions Sample Bottle (No label, 250 mL plastic)

• Triple rinse the unlabeled, 250mL plastic bottle with native water before collecting sample.

• Fill sample bottle after rinsing, leaving a small amount of headspace to facilitate mixing in lab, cap bottle tightly.

b) Nutrients Sample Bottle (Yellow label, 500 mL plastic)

• Triple rinse yellow-labeled plastic sample bottle with native water before collecting sample.

• Fill sample bottle after rinsing, leaving about an inch of headspace.

• Add sulfuric acid (H2SO4) to sample, inverting several times to mix, and cap bottle tightly.

c) Pesticides and Emerging Contaminants Bottle (No label, Amber glass)

• Do not rinse.

• Fill amber glass bottle, leaving about an inch of headspace, and cap bottle tightly.

• Keep amber glass bottles out of direct sunlight.

d) BPA Sample Bottle (Green label, Amber glass)

• Fill the sample bottle halfway, leaving space to add the pre-measured methanol.

• Pour methanol preservative (6 mL vial) into sample bottle.

• Cap tightly and invert bottle several times to mix well.

e) Total Coliforms / E. Coli (125mL plastic)

• Fill plastic bottle, leaving about an inch of headspace, and cap bottle tightly.

• Cool to <10 °C, but do not allow samples to freeze

f) Radionuclides (plastic)

• Triple rinse plastic sample bottle with native water before collecting sample.

• Fill bottle, leaving about an inch of headspace, and cap bottle tightly.

• Add nitric acid (HNO3) to sample, inverting several times to mix, and cap bottle tightly.

Filtered Samples (Part of the bottle kit)

g) Metals Sample Bottle (Red label, 500 mL plastic)

• Attach disposable filter to the Tygon tubing.

• Triple rinse the red-labeled, 500 mL plastic sample bottle by filling it with a small amount of filtered sample water, replacing the cap, and shaking to rinse.

• Fill sample bottle after rinsing, leaving about an inch of headspace.

• Add nitric acid (HNO3) preservative to the sample. Invert bottle several times to mix.

• Cap bottle tightly, dispose of filter.

• In rare cases, it is not possible to attach the hose splitter to a sampling hydrant or discharge point, and therefore, Tygon tubing and a filter cannot be used. If this happens, collect the sample following the steps above without the filter, recording it on the field notes, and informing the Lab that lab filtering is required.

8. Place all sample bottles into one zip top bag.

9. Rinse Tygon tubing and hose splitter with deionized water before they dry and while wearing nitrile gloves. Store tubing and splitter in sealed bag to keep away from potential sources of contamination.

Storage of Samples:

1. Bagged samples (“bottle kits”) are stored in a cooler with adequate ice to keep cool until received at the Lab.

2. Samples for total coliform/ E. Coli are stored in a cooler with adequate ice to keep cool, but are not frozen until received at IDEQ approved lab.

Shipping and Submitting Ground Water Quality Samples

Secure, timely shipping and submittal of water samples is a critical component of quality data.

Shipping Method:

1. Place bagged bottle kits in cooler(s). If the bottles are handled, or tightness of caps are checked on bottles before shipping, wear nitrile gloves. Amber glass bottle caps sometimes break easily. Caps should be tightened firmly, but not excessively.

2. Ice should be packed around the samples using either plastic bottles of frozen water (preferred method), well-frozen ice-substitute packs (e.g., blue ice), or ice cubes in zip top bags. Samples are to be shipped with enough ice to keep samples chilled for 24 hours.

3. Add packing material around the bottles to avoid breakage.

4. Place Sample Submission Forms (obtained from IWRB’s representative, example attached as Attachment C) for all sites in a one-gallon Ziploc® bag. Place a return label in another zip top bag and put it in the zip top bag containing the Sample Submission Forms. Tape the one-gallon Ziploc bag to the inside of the cooler lid with strapping tape.

Close the cooler’s lid and tape the lid with strapping tape. Ship on Monday through Thursday mornings.

5. All non-bacteria ground water samples are to be sent to the Idaho Bureau of Laboratories, 2220 Old Penitentiary Road, Boise, ID, 83712.

6. Samples should be shipped using FedEx within the hold time of 14 days.

7. The Lab will ship empty coolers back to the field teams.

Local Submission Method:

1. Place bottle in cooler(s). If the bottles are handled, or tightness of caps are checked on bottles before packing, wear nitrile gloves. Amber glass bottle caps sometimes break easily. Caps should be tightened firmly, but not excessively.

2. Ice should be packed around the samples using either plastic bottles of frozen water (preferred method), well-frozen ice-substitute packs (e.g., blue ice), or ice cubes in zip top bags. Samples are to be submitted with enough ice to keep samples chilled for 24 hours.

3. Place Sample Submission Forms for all sites in a one-gallon zip top bag. Tape the one-gallon zip top bag to the inside of the cooler lid with strapping tape.

4. Hand-deliver all ground water samples for bacteria and nitrate analysis to an IDEQ certified laboratory within the hold time of 30 hours.

E. Coli Detection

IWRB must be notified of any detection of total coliform or E. coli in ground water within 24 hours of receipt of lab results. If E. coli is detected at ground water monitoring locations, do the following:

1. Resample the ground water monitoring location(s) for E. coli within 1 week (7 days) of receipt of lab results.

2. If lab results from resampling are non-detect for E. coli, then no further actions need to be taken. If lab results are positive from the resampling, then contact IWRB immediately after receiving results. IWRB will consult with IDEQ to determine appropriate actions, which may include weekly sampling until results are non-detect for E.coli. All results from the sampling will be reported to IDEQ within 24 hours of receipt of lab results.

Quality Assurance/Quality Control

Decontaminating Field Equipment

Field equipment must be kept clean and organized to prevent contamination and cross-contamination of ground water samples.

General Guidelines

Field meters (pH, conductivity, and dissolved oxygen) should be kept in the provided carrying case(s). Other sampling equipment (hose splitter and Tygon tubing) should be stored in plastic bags and away from sources of contaminants (dust, fumes), and only be handled with gloved hands.

The ends of the pH and DO probes should be stored in their respective storage containers. The pH storage container should be kept filled with electrolyte solution or pH 7 standard solution.

The DO storage container should have enough water to keep the yellow sponge moist. The end of the conductivity probe can be stored in open air. When calibrating the pH and conductivity meters, rinse the probes with deionized water before calibrating, and in-between calibration standards.

Sample bottles should be stored and transported in a clean cooler. Only remove bottles from the cooler to label bottles, preserve bottles, and collect samples; immediately place them back in the cooler when not handling them and after sample collection. Bottles and sampling equipment (e.g.

hose splitter, Tygon tubing) should never touch the ground. Use disposable nitrile gloves when collecting, labeling, preserving, and handling all water samples. Do not allow the bottle rims or the inside of the bottle caps to touch anything, including fingers, ground, Tygon tubing, hydrant, etc. Replace bottles, filters, and/or gloves if contamination is suspected.

After sample collection, remove the filter and disconnect the Tygon tubing from the splitter.

Dispose of filter. Disconnect the hose from the splitter. Remove the splitter from the hydrant.

Rinse the Tygon tubing and the splitter with deionized water while wearing nitrile gloves.

Blanks and Replicate Samples

Quality Control (QC) samples are used to evaluate field and laboratory procedures. Fill and label each QC sample bottle according to the tables below at the same time as collecting the normal, non-QC samples. Follow standard sampling protocols to prevent contamination. Chill, store, and submit QC samples to the Lab with the non-QC samples.

Table 1. Collecting Blank and Replicate Samples

QC Type Frequency Analyte(s) Procedure

Blank

1 per 33 samples (8 max for 280 samples)

All

Fill each sample bottle with filtered, certified, deionized water and preserve as though collecting a normal sample. Record the date/time deionized water was taken from the Lab’s Millipore system.

Replicate (filtered)

1 per 20 samples (14 max)

Metals Fill bottle for each replicate type with native water and add preservatives.

Replicate (unfiltered)

1 per 20 samples (14 max)

Common ions, nutrients, immunoassays

Fill bottle for each replicate type with native water and add preservatives.

Spikes 1 per 50 samples (6 max)

1 analyte per spike sample

Select bottle according to spike type. Fill bottle with deionized water and add spike vial.

Table 2. Bottle Labeling for QC Samples

QC Type Alternate Station/Site ID Label Time Notations Field Form Notations

Blank Station and Site ID with a "-1" on the end

Record time as 10 minutes later than actual sampling time.

In "Other Remarks" on field notes sheet, write "Blank Sample" and the alternate Station/Site ID.

Replicates Station and Site ID with a "-2" on the end

Record time as 5 minutes later than actual sampling time.

In "Other Remarks" on field notes sheet, write "Replicate Sample" and the alternate Station/Site ID.

Spikes Station and Site ID with a "-3" on the end

Record time as 5 minutes later than actual sampling time.

In "Other Remarks" on field notes sheet, label "Spike Sample" and the alternate Station/Site ID.

SOP Attachment A

Attachment A

Sampling Equipment

Instruments

Field case o Multimeter o DO probe o SC probe o pH/Temp probe

Electronic sounding tape (e-tape) Handheld GPS

Sample Collection

Bottle kits Flow-through chamber with female hose attachment Hose with hose splitter Tygon® tubing Sticker labels DI water bottles Preservatives o Sulfuric acid o Nitric acid o Methanol

Standards o SC 1413, 500, (100) o pH 4, 7, 10

Barrel filters Materials for other samples (e.g.

isotope, methane, blanks, etc.)

Toolbox

Socket wrench set Wrench set Screwdrivers (Phillips & flathead) Nuts and bolts Flashlight Well tag kit Measuring tape Work gloves D-Cell batteries AA batteries

Other Supplies

Ice Coolers Rubber gloves Bleach & water solution in spray bottle Paper towels Folding table Digital camera Clipboard Pens Permanent marker First aid kit

Attachment B

SOP Attachment B

Field Notes

Field Notes Explanation:

Field notes should be taken at each site that a sample acquired. They are an informal record of what happened at each site that a sample is gathered from. Ideally, field notes should be written down on a waterproof field notebook, so notes aren’t damaged by water. After each sampling day, the sampling notes should be photocopied and sent to an IWRB representative. An example of items needed in field notes for one sampling site is located below.

Date: 7/25/2023

Station ID: Jones Pit

Site ID: MW-1

Personnel: John Doe

Purge Start Time: 10:55

Field Parameter Stabilization:

1-Time: 10:55 2-Time: 11:00 3-Time: 11:05 DO: 8.1mg/L DO: 8.4 DO: 8.4

PH: 5.5 PH:6.0 PH:6.1

Temp: 15 Celsius Temp: 15.9 Celsius Temp: 16 Celsius SC: 347.8 µS/cm SC: 350.8 µS/cm SC: 350.7 µS/cm

Parameters Stabilized Time: 11:05

Sample Time: 11:10

Other Remarks: Water was cloudy.

322 Front Street

Boise ID 83702

208-721-2333

Josh Mo x

Josh.Morell@idwr.idaho.gov

Heather Neace

Wesley.Hipke@idwr.idaho.gov

Bacterial Density Request Form Please fill in all of the gray areas.

cusroMERNAME/AGENcv: IDWR Recharge Address:

City: I State: I Zip:

Attention: Contact Phone:

Additional copy of report sent to: Agency, Name: If Applicable

Address:

City, State, Zip Code

Collected by I Date Submitted (Mo, Day, Yr) I DEQ Project#

SAMPLE TYPE (Check Appropriale Boxesb

Dwastewater Surface Water (Recreational) □Raw Deross Composite OFinal □Depth Integrated □Chlorinated QGrab

D Drinking Water D Ground Water (Monitoring)

PURPOSE OF SURVEY (Check one box) □Intensive Survey

SAMPLE TAKEN FROM (Chock appropriate Boxes) Qspring □creek

PRESERVATION METHOD (Chackapproprl•boxas) QCooled 4C

TEST REQUESTED (Chock appropriate boxosJ @Total Coliform

□Trend □compliance

QRiver □Reservoir □Lake OSTP

D Sodium Thiosulfate □Both

0Fecal Coliform @E.coli

LABORATORY

Sample Number Customer Sample ID Sample Location

(LAB USE ONLY)

Chain-of-Custod Information Relinquished by: Date: Time: Received by: Relinquished by:

I Special Instructions:

State of Idaho Bureau of Laboratories 2220 Old Penitentiary Rd.

Boise, ID 83712 208-334-2235

EPA ID00018

□sludge Qsoil [J)ther

Qother

Olndusbial □Drain Q.agoon

O0ther

D Other (See Directions on Back of Form)

O0ther

Date Collected (Mo/DayNr)

Time Collected (Military)

Date: Time: Received by:

,!;I, Get your forms on the web at: http://www.statelab.idaho.gov; select 'Environmental Analysis'

Updated 11/1//06

Attachment C

Attachment C | 1 of 3 jmorell Underline

ENVIRONMENTAL ANALYSIS REQUEST FORM (Non-Drinking Water)

Updated 2/8/2011

PLEASE COMPLETE ALL APPLICABLE INFORMATION

Customer / Agency Name:

Mailing Address:

City: State: Zip:

Attention: Phone:

Email: Fax:

Collector (if different than above):

Contact Phone #:

Date Collected:

Time Collected:

(24 hour clock)

Additional copy of report sent to:

Address: City: State: Zip:

Sample ID: Sample Location:

(Project Name/ Code/ Site):

SAMPLE MATRIX

Surface Water Ground Water Product / Formulation Soil Sludge Waste Water Water, Unknown Biological Tissue Solid Other

METALS INORGANIC CHEMISTRY RADIOLOGICAL

T = Total D = Dissolved Alkalinity Gross Alpha

Aluminum T D Ammonia Gross Beta Antimony T D Biochemical Oxygen (B.O.D.) Uranium Arsenic T D Chemical Oxygen (C.O.D.)

Barium T D Chlorophyll A / Pheophytin ORGANIC CHEMISTRY Beryllium T D Chloride VOC – EPA 8260 / EPA 524 Cadmium T D Conductivity Semi-Volatiles – EPA 525 Cobalt T D Corrosivity (Langelier Index) TPH – Dx - NWTPH Chromium T D Cyanide, Total Pesticides Copper T D Cyanide, Weak Acid Dissociable Herbicides Iron T D Fluoride PAH’s Lead T D Hardness Oil and Grease Manganese T D Hydrogen Sulfide Mercury T D Nitrate as N Molybdenum T D Nitrite as N Nickel T D Nitrate + Nitrite, Total Selenium T D Total Kjeldahl Nitrogen (TKN) Silver T D Orthophosphate as P Strontium T D Orthophosphate as P, Dissolved Thallium T D pH Tin T D Phosphorous, Total Vanadium T D Silica Zinc T D Settleable Solids (SS)

Sulfate Calcium Total Dissolved Solids (TDS) Magnesium Total Suspended Solids (TSS) Potassium Total Suspended Sediment (TSSC) Sodium Total Solids (TS)

Turbidity Volatile Solids

Other Analysis Requested:

CHAIN-OF-CUSTODY INFORMATION (When Required) Relinquished by: Date: Time: Received by: Date: Time: Received with Seal Intact? Yes No

Label Tag, COC Agree? Yes No

Get your forms on the web at: http://www.statelab.idaho.gov; select ‘Environmental Analysis’

State of Idaho Bureau of Laboratories 2220 Old Penitentiary Rd.

Boise, ID 83712 208-334-2235 EPA No. ID00018

IWRB

322 Front Street

Boise ID 83702 Josh Morell 208-721-2333

Josh.morell@idwr.idaho.gov Heather Neace 208-914-8815

Wesley.hipke@idwr.idaho.gov

Attachment C | 2 of 3

INSTRUCTIONS

Paperwork & Labeling

1. This form must be completed and submitted for each individual sample requiring analysis. Complete the top portion completely to ensure that proper credit is received for compliance monitoring and accurate customer information is obtained by the Bureau of Laboratories. Be certain that all information is legible.

2. Samples must be collected and preserved in the appropriate manner for the specific test(s) requested. Samples collected inappropriately will be rejected by the laboratory. Please contact the laboratory with any questions.

3. Clearly label all sample containers with the water system name, sample location, date, time, and collector.

Ensure that the same sample location is used on both the sample containers and this form.

4. Clearly check the testing services you are requesting the laboratory to provide. The laboratory does not know the specific required testing for an individual customer’s circumstance. Refer to your regulatory agency for guidance on specific analyses required.

5. Please fill out a Chain-of-Custody form if you require the sample to be handled as evidence.

Sample Collection & Handling

1. Contact the laboratory for containers. When testing for organics, due to the nature of some possible target contaminants, do not use rubber hoses or tubing as they are potential sources of contamination. Tygon or Teflon tubing is an acceptable substitute for rubber hoses.

2. Some sample containers provided by the laboratory contain a chemical preservative. DO NOT dump or rinse this material out of the container prior to collecting the sample. It is intended to assist in providing more accurate results. Be cautious to not get any of the material on you. Containers will be labeled with the preservative they contain. Pay special attention to acid preservatives like hydrochloric, nitric and sulfuric acid so that you do not come into contact with these liquids. The lab will provide you with Material Safety Data Sheets for containers that have potentially harmful chemicals. Although preservative materials are generally harmless, any chemical can cause adverse reactions in some circumstances.

3. Fill all sample containers completely. Collapsible plastic containers need to be inflated by blowing into them before filling. The containers issued for the analyses in question are designed to provide the laboratory appropriately preserved samples as well as necessary sample volumes.

4. Sample containers for VOC analysis (small amber vials with hydrochloric acid) must be filled so that no air voids remain in the sample container after filling. Invert VOC sample containers after filling and sealing.

If an air bubble is visible, open the container and “top-off” with additional water. Contact the laboratory if there is concern about providing sufficient sample volumes.

5. Drinking Water Sample Collection – Samples intended for Safe Drinking Water Act compliance monitoring must be collected from a DEQ approved sampling location. Contact your regulatory agency for the appropriate collection location.

6. Ground Water Sample Collection – Purge the ground water source by allowing the water to flow for approximately five to ten minutes. Slow the water flow to a manageable flow and fill each sample container. Be careful not to touch the inside of the container or seal as that may contaminate the sample.

7. Surface Water Sample Collection –Teflon, Stainless steel, and sometimes brass (depending upon tests needed) bailers are acceptable for sampling. Fill each sample container completely. Be careful not to touch the inside of the container or seal as that may contaminate the sample.

8. Soil / Solid / Sludge Sample Collection - Fill each sample container completely. Be careful not to touch the inside of the container or seal as that may contaminate the sample.

Keep samples cold in an insulated cooler or refrigerator until they can be submitted to the laboratory. Return samples to the laboratory as soon as possible after collection. Some analyses must be completed within 48 hours of sample collection. Contact the laboratory if there is concern about possible submission delays.

Ship To: Idaho Bureau of Laboratories 2220 Old Penitentiary Rd.

Boise, ID 83712 208-334-2235

Attachment C | 3 of 3