HomeMy WebLinkAboutQuenzer final 2020 monitor report V1E IDIA\ -
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aATL osnsi22 sultinq, Soil Evaluations & Data Collection
FILE NUMBER FPS-2022u018
October 30, 2020
Mr Jon Wardle
Brighton Corporation
2929 W. Navigator Drive
Suite 400
Meridian, ID 83642
I.LC
HARLEYR NOE
Phone: 208.850.4926
Fax: 208.939-8602
RE: Final 2020 groundwater report — Quartet (Quenzer) property
I have completed the 2020 groundwater monitoring on Quenzer site now named
"Quartet." The parcel is located east of Black Cat Road and south of McMillan Road.
Attached is the data sheet for the full irrigation season. I did not receive the ground
elevation survey information, so measurements are shown in inches below ground
surface. You requested I collect biweekly data starting in November 2019. That
information is also included on the spreadsheet. Five new test pits were added in mid -
August to the site south of the 2019 test pits and are indicated as "SE" in the data. A
map is attached on 2020 Google imagery showing all 13 monitor pipe locations.
Notice the background values up through April 101 remained low and an upward
trend in levels begins at the April 24' readings. Water was turned into the Nampa -
Meridian canals in the first week of April and crop irrigation started soon thereafter.
This shows the immediate impact by irrigation.
Most of the peak values for the north 8 piezometers occurred on the July 3rd readings.
All fields on this property were winter wheat with sugar beets on surrounding fields
adjacent. The peaks at 6-19 and 7-19 were recorded at the May 8 cycle, but raw levels
were very similar to those of July 3rd. Once peaks occurred the level slowly dropped.
They will continue to drop to the off-season lows as demonstrated by measurements
last winter. The final irrigation on the grain occurred July 3' and the crop was
harvested on July 30'
The data indicates to me that the onsite surface irrigation is having an impact on
highest readings. An estimate of the degree of the impact is difficult to quantify. The
first evidence of cropping seems to be visible when March 26 levels are compared to
those of July 3.
5740 N. APPLEBRooK WAY Bom, IDAHo 83713
j (E IDR IAN;�- I GW report —page 2
APPROVED
D,TL 09"3/22 er, there is a background flow of perched, shallow groundwater present
FILE NWBER. FPS-2022-0018 out the summer in the shallow aquifer. As a rough estimate the post -
development peaks should be about 12 inches lower than the pre -irrigation
measurements collected.
Peak levels at the 5 new SE piezometers had already been passed when those test pits
were placed. A glance at the slow drop of those measurements indicates post -
development should be very similar to the north 8 piezometers. Hopefully we can
collect some biweekly data at all 13 pipes next spring with all piezometers in non -
irrigated condition.
Once you calculate the groundwater elevations I would appreciate seeing those values.
Please let me know what monitoring you would like to see next season. I would
suggest biweekly reading starting in late March extending through the summer or until
the piezometers are destroyed by construction.
If you have questions or need additional information please contact me.
transmitted via e-mail
HARLEY R. NOE
Professional Soil Scientist
cc w/attachments via e-mail: Lachlin Kinsella, Brighton Corporation