ECMC Rule 909.j · Produced water quality analyses · Colorado
Rule 909.j produced water testing, ready for Form 43
One accredited lab for your pit produced water samples: the full Rule 909.j analyte list in one package, with the electronic data deliverable (EDD) formatted for your Form 43 submittal.
A2LA certificate 7797.01 · NELAP/TNI · ISO/IEC 17025:2017 · nonpotable water · View accreditation
The rule
What Rule 909.j requires
Since January 15, 2021, Colorado operators must analyze produced water from each well that sends water to a permitted or registered pit, including pits built before that date.
| Requirement | Rule 909.j |
|---|---|
| Initial analysis | Produced water from each well contributing to a permitted or registered pit |
| Lined pits | One confirmation sample 33 to 39 months after the initial sample |
| Unlined pits | Annual sampling; relief may be requested by Form 4 if water quality is stable |
| Resampling | When a new well contributes, when water quality may have changed, or when the Director requires more |
| Laboratory | Accredited laboratory and established methods; reporting limits below WQCC Regulation 41 groundwater thresholds where they apply |
| Reporting | Form 43, Analytical Sample Submittal, with the lab’s EDD and PDF reports, within 3 months of collection |
| Consolidated program | Wells from the same formation, field or unit, and pit may request one by Form 4 |
Source: Rule 909.j, 2 CCR 404-1 (ECMC 900 Series). ECMC also publishes a Produced Water Quality Model Sampling and Analysis Plan for 909.j sampling.
What we test
The full 909.j analyte list in one package
DIG runs most of the list in-house and coordinates the rest through an accredited partner laboratory, so you receive one report and one EDD.
| Rule 909.j group | Analytes | Who runs it | In DIG’s A2LA scope |
|---|---|---|---|
| General chemistry | pH, conductivity, total dissolved solids, total suspended solids, alkalinity | DIG | pH, TDS, alkalinity: Yes. Conductivity, TSS: No |
| Major anions | Bromide, chloride, fluoride, sulfate, nitrate and nitrite as N, and phosphorus | DIG | Bromide, chloride, fluoride, sulfate: Yes. Nitrate, nitrite, phosphorus: No |
| Major cations | Calcium, iron, magnesium, manganese, potassium, and sodium | DIG | Yes |
| Other elements | Barium, boron, selenium, and strontium | DIG | Yes |
| Petroleum hydrocarbons | Volatile (GRO) and extractable (DRO) fractions | DIG | Yes |
| BTEX | Benzene, toluene, ethylbenzene, xylenes | DIG | Yes |
| Naphthalene | Naphthalene | Accredited partner lab | Accredited partner lab |
| Radium | Radium-226 and radium-228 | Accredited partner lab | Accredited partner lab |
How it works
From kit to Form 43 upload
01
Request kits
Tell us the pits, the number of contributing wells, and whether each pit is lined. Kits are provided with your order.
02
Sample produced water
Follow the kit instructions and the ECMC Model SAP, and complete the chain-of-custody form.
03
Ship to our Westminster, Colorado lab
Standard turnaround is 10 business days, with Rush (5 business days) and Super Rush (3 business days) available. Turnaround for accredited partner lab may vary.
04
Upload to Form 43
Your report arrives with PDF lab reports and the EDD formatted for Form 43, well inside the 3-month submittal window.
Why DIG
Accredited, Colorado-based, and ready to explain the data
Accredited lab
NELAP/TNI and ISO/IEC 17025:2017 accredited by A2LA for nonpotable water, certificate 7797.01.
Form 43-ready EDD
Every 909.j report includes the ECMC electronic data deliverable and PDF lab reports.
Technical expertise
Talk to a qualified scientist about your results, from sampling questions to a change in water quality.
Get your 909.j sampling kits
Contact the lab for kits and a quote. For urgent sampling, please call.
DIG Geochemical Laboratory
11025 Dover Street, Suite 800
Westminster, CO 80021
