TNA – Total Nitrogen Applied Reporting

Para ver esta informacion en espanol, haga clic en la bandera mexicana en la parte superior derecho de la pantalla.

Total Nitrogen Applied (TNA) reports on the 2023 crop year are due by March 1st of 2024.  This requirement applies to all ranches currently enrolled in the Central Coast Ag Order, except for a small number of ranches designated as “Phase Area 1” in Ag Order 4.0 (click here to view map).

Phase Area 1 ranches must submit an INMP Summary Report by March 1st, 2024. Click here to visit out INMP Reporting page

Failure to submit a required TNA or INMP report may result in enforcement action by the Central Coast Water Board, and/or loss of Third Party membership with Preservation, Inc. Water Board enforcement actions for failure to submit 2022 TNA reports have included fines of approximately $40,000 (link to Water Board press release). 

Section I – Introduction & Checklist

You will need the following information in order to complete the TNA report. You can download this checklist here: TNA Reporting Materials Checklist

Puedes descargar esta lista de verificación aquí: Lista para TNA en Espanol

  • Preparer Name 
  • Preparer Company 
  • Preparer Email 
  • Preparer Phone Number 
  • Calendar year of TNA data being reported 
  • Ag Waiver (AW) number 
  • Global ID (AGL) number
  • Ranch name
  • Assessor Parcel Number(s) (APN’s) farmed  
  • The total number of acres that were farmed
  • Total number of acres left fallow  
  • Whether or not the ranch is a greenhouse, nursery, or hydroponic operation 
  • Primary source of irrigation water (i.e. well versus city versus recycled, etc.)
  • Total volume (in gallons) of irrigation water applied to the entire reported acreage during the reporting period
  • The average nitrate concentration (in mg/L or ppm) of irrigation water applied
  • The average nitrate concentration unit of irrigation water applied
  • Crop(s) you are reporting
  • Total crop acres for selected crop*
    • Crop acres takes into account successions (i.e. if you have 10 acres and you did two successions of lettuce then you will report
      20 acres)
  • Amount of Nitrogen present in soil as pounds of Nitrogen per crop acres (lbs/crop-acre)
  • Amount of conventional (synthetic) fertilizers and other materials pounds of Nitrogen per crop acre (lbs/crop-acre)

Section II – Recordkeeping & Calculations

If you are not already closely tracking the types and amounts of fertilizers and irrigation water that you apply to each crop, you will need to do a significant amount of record keeping before preparing your TNA report. 

Once you have all of your fertilizer and irrigation records in one place, you will need to convert this information into the total pounds of Nitrogen (N) and total gallons of water applied to each crop on each of your ranches for the year. 

Here is a link to the Regional Water Board’s introductory video on TNA reporting. Information on recordkeeping begins at the 3:50 point in the video: 

The following records or calculations are needed to complete the TNA report. Where available, we have provided links to recordkeeping and/or calculator tools. Preservation, Inc.’s TNA/INMP Calculator Tool can help with your conversions, record keeping, and data reporting. Use of these tools is not required, but they may be helpful if you do not already have a system in place:

  1. Volume of irrigation water applied, in gallons – this can be measured or estimated in a variety of ways: 
    • Flow meter
    • Convert kilowatt-hours from your PG&E bill to volume (contact for instructions)
    • Unit conversions – if you know the acre-feet or inches applied, you can convert to gallons (link to conversion tool)
  2. Pounds of N in irrigation water 
  3. Soil nitrogen content from soil test
  4. Pounds of N applied in fertilizer
  5. C:N ratio
    • Finding this information
  6. Organic versus synthetic/conventional

Section III – Submit a Report

To Submit Your Report:

  • If you are not comfortable using computers or Excel spreadsheets, call 831-240-9533 
  • Operations that grew five or fewer crops on a single ranch in 2023 may use Preservation, Inc’s new TNA-EZ Form.  
  • All others please download the TNA Reporting “Spreadsheet Form” below
    • Contact the Support Line with basic questions (phone number and email above)
    • For advanced technical support, contact Marco Sigala at
  • If you used the Spreadsheet Form (a.k.a. Template) to submit your TNA report last year, you can start this year’s report from the same saved file, however, you will need to download and populate a slightly updated Spreadsheet Form for this year’s report.

The Preservation, Inc. Total Nitrogen Applied (TNA) Reporting Spreadsheet Form

The information required in the Preservation, Inc. TNA report Spreadsheet Form (an MS Excel file) is identical to the information required by the GeoTracker TNA web-form.  The layout is different, to support rapid data entry for growers and service providers who:

  • Need to report on large numbers of ranches and/or crops; AND
  • Already have systems in place to calculate the final values required for the report

If you used the Preservation, Inc. TNA report Spreadsheet Form to file your report last year you can use that saved file as a starting point for your current year report. (To request a copy of a report that you submitted last year, please email

How To Submit a TNA Report

Third Party members must use Preservation, Inc’s TNA reporting tools to submit their TNA reports (see below).

  • Please upload your completed Spreadsheet Form to Preservation, Inc’s “TNA Report Submittal Site
  • If you experience any problems uploading your report to the above-linked page, please email it as an attachment to:

If you are not comfortable using computers or Excel spreadsheets, call 831-240-9533.

Compliance Consultants for Additional Help Completing or Revising INMP Reports:

Danilu Jelderks (Ramirez) – 805-363-0761
Heather Golden – 831-320-8698
Katie Teresi – 831-207-1215 
Karla Cornelio, UCCE-Santa Clara County – 408-201-0652
Sasha Lozano, Santa Cruz County Resource Conservation District – (831) 464-2950
Laura Murphy, Monterey County Resource Conservation District – (831)975-7775

Video Walk-Through of the Spreadsheet Form

Contact Info

  • PO Box 2227
    Watsonville, CA 95077
  • 831-761-8644 (phone)
  • 831-761-8695 (fax)
For a full list of contacts please
visit our contact page.

Latest News

Member Workshops

Preservation, Inc. held four combined Third-Party Membership and TNA/INMP reporting workshops in November of 2023 (two in English and two in Spanish), with information on upcoming 2024 Third-Party ...
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