SU0005871 - Laserfiche WebLink

Home Browse Search

2024 ANNUAL GROUNDWATER MONITORING REPORT TEICHERT AGGREGATES AND GRANITE CONSTRUCTION VERNALIS AREA obstructed depth. From February 2021 to February 2022,the obstruction was no longer present and water level measurements were successfully obtained. In spring 2022, an airline was installed to an unknown depth and since then, pressure readings have been collected. Brown's New production well.An airline was installed in the Brown's New well to obtain water levels, but it was destroyed by wildlife in spring 2018 making the well inaccessible for water level measurements.The airline was repaired, and pressure readings were obtained in 2019 and spring 2020. In summer 2020,the pump was temporarily removed,and a water level was obtained. By fall 2020,the pump was re-installed, however there was no longer an airline and no access to the well for water level measurements. In 2021,the well was accessible for water level measurements, however,the well has been pumping during most monitoring campaigns. From 2021 to May 2024, an electric water level sounder was deployed to a depth of 450 feet bgs without encountering groundwater. Starting in August 2024,an acoustic sounder has been used to measure groundwater levels. Brown's#1 production well. In August 2023, it was discovered that the airline on Brown's#1 well had been cut by what appeared to be weed abatement equipment.Water level measurements have been unattainable in the well since August 2023. Granite#5 production well. In 2019,the Granite#5 production well was incorporated into the monitoring program. Pressure readings were obtained in its airline but due to a leak in the airline,the pressure readings are not usable. In fall 2021,the pump was removed from the well and there was no access for a water level measurement due to a rubber hose,with unknown use, being placed into the sounding pipe.Starting in August 2024, an acoustic sounder has been used to measure groundwater levels. Blewett Road domestic well. In May 2024,a domestic well along Blewett Road and east of the Teichert Aggregate facility was incorporated into the monitoring network. Since then,water levels have been collected through the use of electrical and acoustic water level sounders. The groundwater quality network consists of 2 wells upgradient from the Vernalis plant(Hall and Faulkner domestic wells), 1 well onsite (South Tracy#3 production well),and 2 downgradient wells (Granite#5 and Brown's New production wells) (Figure 3).The monitoring network has experienced modifications over time. For example,the South Tracy#3 production well was added to the water quality network in 2004 in lieu of the Brown's New well,which became inoperable in 2001(due to the removal of the pump).With Granite's commencement of mining activities,the Brown's New well was equipped with a pump again and was incorporated back into the monitoring program in 2009 as a replacement for the South Tracy#1 well. Further,from 2006 to spring 2018,the Granite#3 well replaced the Brown's#1 well for water quality monitoring purposes,as the Brown's#1 well was vandalized in 2005. In 2019,Granite#3 was no longer in operation and was replaced with Granite#5 for water quality monitoring purposes. From 1994 to 1997,the Koster irrigation well was sampled periodically(depending on the availability of a tractor engine for the pump). LUHDORFF He SCALMANINI CONSULTING ENGINEERS 3