Purpose: To provide a standard listing of ground water sampling equipment and supplies, and describe proper maintenance activities for them.
See Appendix A: Ground Water Sampling Equipment/Materials list.
1. Obtaining equipment
1.1. Equipment and supplies as listed will be maintained either on hand within the Water Quality Assessment Section or obtained through the NHHS lab or other supplier.2. Obtaining supplies
1.2. To access equipment on hand, obtain keys to the basement storage area from appropriate Water Quality Assessment Section staff or from the Section secretary. Equipment is kept locked in the Section secure area along the west wall of the basement storage area unless otherwise indicated.
1.3. If you are utilizing any equipment for an extended period of time or if it is not for a normally scheduled monitoring action (e.g. GWMA study, etc.), inform the Unit Supervisor and other Section members of your equipment use, so there is some general knowledge of who is in possession of what equipment.
1.4. In some cases, equipment not on hand within the Section is available from other Sections. Before purchasing equipment, consult with other appropriate Sections or Divisions (e.g. LUST/RA, Waste Management, etc.) to see if they have appropriate equipment for loan.
1.5. If necessary equipment is not on hand within the agency, consult with Unit and Section Supervisors regarding purchase or rental.
2.1. For ordinary ground water sampling supplies (e.g. cubitainers, bottles, preservatives, deionized water, etc.), contact the NHHS lab or outside supplier far enough in advance to ensure adequate time for delivery.3. Instrument/equipment maintenance
2.2. For specialized sampling supplies (e.g. refills for field test kits, etc.), coordinate with Unit Supervisor and specific project manager to order/purchase the necessary items.
3.1. pH meter--separate probe
3.1.1. Calibrate instrument regularly as per GW-070.3.2. pH meter--wand type
3.1.2. When not in use, store probe with tip immersed in deionized water or 7.0 pH buffer solution.
3.1.3. For long periods of storage (greater than a few days/weeks), remove batteries and disconnect probe lead.
3.2.1. Calibrate instrument regularly as per GW-070.3.3. Conductivity meter--separate probe
3.2.2. When not in use, store meter with probe cap firmly in place.
3.2.3. For long periods of storage (greater than a few days/weeks), remove batteries.
3.3.1. Calibrate instrument regularly as per GW-070.3.4. Conductivity meter--wand type
3.3.2. For long periods of storage (greater than a few days/weeks), remove batteries and disconnect probe.
3.4.1. Calibrate instrument regularly as per GW-070.3.5. Global Positioning System (GPS) unit
3.4.2. When not in use, store meter with probe cap firmly in place.
3.4.3. For long periods of storage (greater than a few days/weeks), remove batteries.
3.5.1. Due to the value of these units, they will not be kept in the basement storage area. Rather, individual GPS units will be retained by individual project personnel. Check with the Unit Supervisor and/or GWMA staff to locate the units.
3.5.2. Periodically drain battery pack (3 volt lithium; camcorder type) completely and properly recharge it.3.6. Nitrate field test kit (Hach kit)
220.127.116.11. To prevent loss of data, check and/or replace battery pack annually.3.5.3. Periodically ensure that unnecessary/unused files are deleted from unit’s memory (see GW-090).
18.104.22.168. Periodically check supply of AA batteries as a backup to the battery pack (the unit requires 4 AA batteries, alkaline type).
3.6.1. Periodically insure that test tubes are not cracked or chipped; if so, replace them.3.7. Triazine field test kit
3.6.2. Periodically check expiration date on reagent packets; if out of date, replace them.
3.6.3. For long periods of storage, store kit in dark, dry, cool place.
3.7.1. Periodically check expiration date on kit. If they are out of date but have been stored in refrigerator, they are still usable. Schedule the oldest kits for first field use.
3.7.2. For opened kits, periodically check test tube pouch to ensure that it is sealed.
3.7.3. For long periods of storage, store kit in refrigerator. Clearly mark each kit as belonging to the Ground Water Unit.3.8. Miscellaneous equipment/materials
22.214.171.124. Conversation with the manufacturer indicates that the triazine test kits have an indefinite shelf life if they are kept refrigerated. Use your best judgement as to whether out-of-date test kits should be used on your project.
126.96.36.199. Test kits will be stored in the refrigerator in the Water Quality Assessment Section lab in the basement (immediately south of the basement storage area).
3.8.1. Store miscellaneous equipment and materials in the Section’s secure area in basement. Ensure that all equipment is clean and in working order, and that materials are properly secured with regard to light, moisture, temperature, etc.
APPENDIX A. Equipment/materials checklist for ground water sampling
pH meter (wand or probe)
Spare battery--9 volt alkaline or approp.
Equipment log book
Spare batteries--(2) “D” cells, alkaline or approp.
Equipment log book
DC battery pack--(4) “AA” cells, alkaline
Floppy diskettes, 3.5”
Nitrate test kit (Hach)
Spare test tubes
Spare color wheel
Triazine test kit
Coolers (4 or more)
Wide-mouth glass jar, 500 ml, w/ lid (conductivity)
Wide-mouth glass jar, 1 l, w/ lid(ampule waste; from lab)
Vacuum pump w/ tubing
Buckets, 5-gallon (2)
Deionized water container(s), 3-5 gallons each
Submersible pump (from LUST)
Generator (from LUST)
Fuel for generator
Cubitainers, 1 l plastic (from lab)
Pesticide jars, brown glass, 1 l (from lab)
Lids w/ Teflon septa (from lab)
Deionized water to fill containers (from lab)
Markers, Berol Prismacolor Art--Nile Green (at least 2)
Markers, Berol Prismacolor Art--Canary Yellow (at least 2)
Markers, Sharpie indelible, black (at least 2)
Markers, Sharpie indelible, red (at least 2)
Sulfuric acid ampules (from lab)
Nitric acid ampules (from lab)
Filters, 0.45 um X 47 mm (from lab)
Field inventory sheets
Zip lock bags
Paper tags, manila/yellow/etc. (From lab)
Project contact list/phone #s
Lodging authorization/direct bill
First aid kit
Cellular phone (if not w/ vehicle)
List of hospitals for study area