Frequently Asked Questions

When can I drop off samples & pickup supplies?

When can I drop off samples & pickup supplies?

Samples can be dropped off at our Santa Maria, CA facility M-F 8:30 AM – 5:30 PM.  Contact us to make arrangements for sample drop-off or courier service in the San Joaquin Valley and Northern California.

What are you prices?

Rate sheets and project specific quotations and cost estimates can be provided by contacting us or (805) 922-4776.

Do you supply sample containers?

Soil jars and aqueous containers are provided by OEC at no additional cost to our analysis rates.  Fees and rental charges apply to sample media such as SUMMA Canisters, Tedlar Bags, bombs, brass sleeves, acetate sleeves, etc.

What bottles do I need for the analyses I’m requesting?

Our Container guide will provide you

How do I get to your facilities?

Our LOCATIONS page lists the address, contact information and map links for all our facilities.

What do I need to submit samples for analysis?

How fast do I get results?

Standard Turnaround Time (TAT) of results ranges from five (5) to ten (10) working days and depend on the type of analysis, project and client.  Faster TATs are available for a surcharge.  Contact us at or (805) 922-4776 to discuss turnaround times for your project.

How do I receive my analytical results and reports?

Final analytical reports in PDF format are submitted by email or can be downloaded from our secure server.  Request account for online access to reports.

By request only, final reports can also be sent by mail using the U.S. Postal Service.  Please contact your project manager to make arrangements to receive hard copy reports in the mail.

When does the Turn-Around Time (TAT) start?

For all samples received or picked up prior to 4 PM, Mon-Fri, the following business day will be the first day of TAT.  Samples received after 4 PM, Mon-Fri, TAT will commence as if received the next day.

Example #1:  OEC courier picks up samples at 3:30 PM on a Tuesday.  Wednesday will be the 1st business day for TAT.

Example #2:  Customer drops off samples at 5:30 PM on a Wednesday.  Friday will be the 1st business day for TAT.

What test methods and analyses does OEC perform?

We provide testing results using a wide range of methods and protocols for the environmental compliance and oil & gas industries.  Please see our SERVICES page for specific information on the analyses we perform.

Can OEC received samples shipped from outside the United States?

OEC possesses a current USDA Soil Import Permit which allows us to receive soil & aqueous samples shipped from outside the United States.  OEC’s current USDA Soil Import Permit.