april 2, 1998

14425 South Center Point Way, Utah 84065 T: (801) 501-0583 ~ F: (801) 501-0584

Copyright © 2019 GeoStrata 1 April 2019 Data

April 20, 2019 Public Works Office Attn: Mr. Dave Graves, P.E. Provo City Engineer 1377 South 350 East Provo, Utah 84606 801-852-6740 Subject: Summary Report – Inclinometer and Piezometer Readings from the

Sherwood Hills Landslide Executive Summary At your request and in accordance with our Master Service Agreement dated March 19, 2015 and our Proposal for Installation of Additional Inclinometers and Continued Monitoring of All Inclinometers Sherwood Hills Landslide Prove, Utah dated July 10, 2017, GeoStrata collected and recorded data from the active inclinometers and piezometers at the Sherwood Hills subdivision (Subdivision) in Provo, Utah. This Summary Report includes the current and historical recordings from the active inclinometers and piezometers located within the Subdivision. The location of the monitoring sites within the Subdivision are depicted on Plate 1 – Sherwood Hills Landslide Complex, attached to this document. All active inclinometer and piezometer sites were visited during the month of March 2019. The active inclinometers include two new inclinometers B-17 and B-18 that were installed in October 2017 to replace inclinometers B-11 and B-8, as discussed with you prior to their installation. Base readings for the newly installed inclinometers were taken in February 2018. The data provided in this report addresses our March 2019 measurements from the existing 16 active inclinometers and 11 active piezometers. Displacement graphs from the recent monitoring event have been compared to historical measurements acquired by GeoStrata since 2009 (Plates B-2 through B-16). There are six inclinometers within the Sherwood Hills subdivision that are permanently closed or sheared off (B-1, B-2, B-5, B-7, B-11, B-12, SH-1) due to the amount of movement of the landslide in those areas as shown on the Inclinometer Location Map (Plate 1). Inclinometers B-8 and B-9 are still open for data collection although these inclinometers appear to have experienced enough displacement that the data from these inclinometers are becoming less reliable. For further information regarding the closed inclinometers please refer to our October 2012 memo. Summary of Results A staff geologist from GeoStrata gathered data from the 15 active inclinometers and 11 piezometers located throughout the monitoring network of the Sherwood Hills Landslide Area. Results of the water level readings from June 2011 to the present of the active piezometers are


presented in Table 1.0. The historical trends of water readings are presented graphically in Figure 1.0. Water levels were recorded using a Heron water level meter. Results of our inclinometer readings are attached to this letter as Plates 2 through 16. Inclinometer measurements were collected using an RST Instruments digital inclinometer system. This system is comprised of a digital inclinometer probe, cable system with a reel and an Ultra-Rugged field PC for data readout, analysis and storage. The probe uses a biaxial accelerometer to measure changes of orientation within the inclinometer casing. Data collected from the probe is then processed using RST Instruments Inclinalysis software where cumulative distance of movement can be measured. The system accuracy for the instrumentation is +/- 2 mm per 25 m (.078 in per 82.02 ft). Any observation of movement within that margin of error should be regarded as technical noise and not measurable displacement. For simplification we will consider movement less than 0.1 inches as either background noise or not significant movement. Table 2.0 summarizes the results for all the active inclinometer readings.


The following table is a summary of the Piezometer data collected since 2011 which presents the depth to groundwater below the existing ground surface in feet.

Table 1.0 - Summary of Piezometer data

Date B-1 (5' - 15')

B-1 (25-35') B-3 B-4 B-5 B-6 B-7 B-8

(20-30') B-8

(40-50') B-9 B-12

6/11/2011 NA NA 59.00 62.00 46.00 24.00 37.00 16.00 16.50 12.00 38.00 1/24/2012 2.60 24.50 59.50 62.20 53.90 23.10 39.60 23.60 24.30 14.10 47.60 5/2/2012 2.30 23.10 59.40 62.00 55.30 22.20 39.00 23.60 23.30 13.70 42.00

10/5/2012 3.40 NA 59.50 62.80 54.50 25.50 46.60 25.00 25.70 13.70 Closed 4/1/2013 2.30 24.80 59.10 62.10 54.40 25.50 43.00 23.40 24.10 14.00 Closed

10/5/2013 3.50 NA 59.50 62.60 NA 25.40 NA 24.70 24.30 13.90 Closed 4/21/2014 3.50 Closed 59.10 62.30 NA 25.50 40.70 24.20 24.90 13.40 Closed 12/2/2014 2.40 Closed 59.10 61.90 53.80 25.50 40.80 24.10 24.80 13.30 Closed 6/17/2015 3.00 Closed 58.70 61.80 53.60 25.50 43.80 23.40 22.80 13.00 Closed

12/16/2015 3.54 Closed 58.18 62.21 52.95 25.50 42.54 24.10 23.82 13.24 Closed 12/3/2016 NA Closed 58.65 62.25 55.80 25.45 42.65 24.12 24.80 13.20 Closed 6/15/2017 3.49 Closed 58.68 62.28 54.64 25.52 42.12 18.79 19.68 16.71 Closed

10/19/2017 2.67 Closed 58.68 62.09 55.77 11.48 Dry 20.05 20.94 11.92 Closed 2/28/2018 2.50 Closed 58.75 62.34 58.00 Dry 45.99 23.39 22.88 12.13 Closed 7/25/2018 3.61 Closed 58.76 64.29 55.05 25.51 45.93 23.49 24.09 12.89 Closed 11/6/2018 2.80 Closed 58.70 62.20 54.50 25.70 46.50 23.10 23.80 10.30 Closed

3/5/2019 4.00 Closed 61.80 64.30 59.70 27.50 44.20 22.40 24.00 14.80 Closed

NA – No water level data recorded. “Closed” – Piezometer casing sheared.


Figure 1.0 – Histotical Groundwater Depth Data


Table 2.0 Summary of Inclinometer data Inclinometer Interpretation/Comments B-3 • Between November 2018 and March 2019 incremental movement was

observed on the A-Axis. Observed movement on the A-Axis shows that the inclinometer casing moved approximately 0.12 inches. No movement was observed on the B-Axis between November 2018 and March 2019.

• Minor incremental movement is observed on the A-Axis. The point of deflection in the inclinometer casing associated with this movement, based on the March 2019 readings, is at a depth between approximately 60 to 64 feet. Movement since October 2009 has been a cumulative of 0.30 inches. The low magnitude of variation in the data measurements since October 2009 has exceeded the limits of the measurement resolution of the inclinometer and appears to show minor incremental movement in this area of the Sherwood Hills landslide complex. It should be noted that movement measured on the A-Axis since October 2009 appears to be incremental and generally systematic. Based on our March 2019 reading, the direction of movement in Inclinometer B-3 is to the north-northwest. Based on our March 2019 reading of Inclinometer B-13 which will be discussed below, it appears that this portion of the Sherwood Hills landslide complex may be moving towards the drainage located north of Brentwood Circle and Hillside Circle.

• Minor incremental movement is observed on the B-Axis since October 2009. The points of deflection in the inclinometer casing associated with this movement is at a depth of approximately 60 feet. This accumulated movement is under 0.06 inches since October 2009 and does appear to be systematic and incremental. This movement is currently below the limits of the measurement resolution of the inclinometer.

• Groundwater was measured at a depth of approximately 61.8 ft in the area of B-3 in March 2019 and 3 feet deeper than the November 2018 reading. This depth corresponds to the minor deflection of the inclinometer casing on the A-Axis and B-Axis. Groundwater has not varied appreciably in this location during the duration of our monitoring. If a potential plane of movement exists at a depth of approximately 60 feet. It is possible that a rise in groundwater in this portion of the Sherwood Hills landslide complex may have an impact on that plane of movement. A rise in the groundwater in the area of B-3 could result in increased movement in this portion of the Sherwood landside complex.

B-4 • Between November 2018 and March 2019 minor incremental movement was observed on the A-Axis and B-Axis. Observed movement on the A-Axis was approximately 0.10 inches, and observed movement on the B-Axis was approximately 0.20 inches.

• Minor incremental movement is observed on the A-Axis. The point of deflection in the inclinometer casing associated with this movement is at a depth of approximately 66 feet. Prior to the March 2019 reading, the readings


on the A-Axis appear to show a random scatter of data below the limits of the measurement resolution of the inclinometer since December 2015. The A-Axis readings prior to March 2019 do not appear to be systematic or incremental.

• Minor incremental movement is observed on the B-Axis between November 2018 and March 2019. The point of deflection in the inclinometer casing associated with this movement is at a depth of approximately 96 feet. Total accumulated movement is approximately 0.30 inches. The movement between November 2018 and March 2019 has now exceeded the limits of the measurement resolution of the inclinometer and appears to show some minor movement in this area of the Sherwood Hills landslide complex. Prior to the March 2019 reading, the readings on the B-Axis appear to show a random scatter of data below the limits of the measurement resolution of the inclinometer since December 2015. The B-Axis readings prior to March 2019 do not appear to be systematic or incremental.

• Groundwater was measured at a depth of approximately 64 ft in the area of B-4 in March 2019 and 2 feet deeper than the November 2018 reading. This depth is close to the minor deflection of the inclinometer casing on the A-Axis at approximately 66 feet. However, similar groundwater fluctuations were observed in July 2018 and did not directly correlate with movement. Groundwater has not varied appreciably in this location during the duration of our monitoring. If a potential plane of movement exists at a depth of approximately 66 feet it is possible that a rise in groundwater may have an impact on the movement in this portion of the Sherwood landside complex. Additional readings should be compiled to determine if fluctuations in groundwater are associated with movement in the A-Axis. The deflection point at approximately 96 feet on the B-Axis is approximately 30 feet below the current groundwater level. It is possible that this deeper deflection point experienced a larger incremental movement compared to the A-Axis due to the greater hydrostatic head that exists at that depth. A rise in the groundwater in the area of B-4 could result in increased movement in this portion of the Sherwood landside complex.

B-6 • Between November 2018 and March 2019 no significant movement was observed in either the A-Axis or B-Axis.

• Between April 2009 and March 2019, the A-Axis has observed movement of approximately 0.16 inches. The point of deflection in the inclinometer casing associated with this movement is at a depth of approximately 24 feet. The majority of this movement (approximately 0.1 inches) occurred between April 2010 and June 2011. Movement since June 2011 has been minor incremental movement and appears to show minor systematic movement in this area of the Sherwood Hills landslide complex. The low magnitude of variation in the data measurements since June 2011 may be due to the limits of the measurement resolution of the inclinometer and not actual movement.

• Between April 2009 and March 2019, no significant movement was observed in either the B-Axis. The low magnitude of variation in the data


measurements since April 2009 may be due to the limits of the measurement resolution of the inclinometer and not actual movement.

• Groundwater at this location was approximately 27.5 feet at the time of groundwater measurement in March 2019. Groundwater had not varied appreciably in this location during the duration of our monitoring until the October 2017 measurement. Groundwater level had raised approximately 14 ft from normal levels in October 2017; however, groundwater has dropped back to its normal elevation. This fluctuation in groundwater appears not to have changed the rate of movement. Due to the condition of the concrete pad and flush mount well cover for the B-6 piezometer it is also possible that surface water may have collected in the B-6 piezometer and our reading may have been influenced by that surface water. This concrete pad and flush mount well cover have recently been repaired. Subsequent readings of the inclinometer will be needed to assess the potential movement resulting from fluctuation in groundwater elevation.

B-8 • Between November 2018 and March 2019 minor incremental movement was observed on the B-Axis. Observed movement on the B-Axis shows that the inclinometer casing moved approximately 0.08 inches.

• Incremental movement has been observed on the A-axis since April 2009. Movement on the A-Axis was not able to be assessed for the March 2019 readings. It appears that due to the amount of deflection in the inclinometer casing, the readings are becoming increasingly unreliable. The point of deflection in the inclinometer casing associated with movement on the A-Axis is at a depth of approximately 62 feet. The accumulated movement on the A-Axis is approximately 0.85 inches since April 2009. The measurements since April 2009 exceed the limits of the measurement resolution of the inclinometer and clearly show minor incremental movement in this area of the Sherwood Hills landslide complex.

• Minor incremental movement is observed on the B-Axis. Based on the March 2019 reading, the point of deflection in the inclinometer casing associated with this movement is at a depth of approximately 62 feet. This accumulated movement is approximately 0.50 inches since April 2009. The low magnitude of variation in the data measurements since April 2009 has exceeded the limits of the measurement resolution of the inclinometer and clearly shows minor incremental movement in this area of the Sherwood Hills landslide complex.

• Readings of B-8 will continue until the B-8 casing finally shears off. • Groundwater was measured at a depth of approximately 23ft to 24ft in the

area of B-8 in March 2019. Groundwater level has remained at relatively the same depth since February 2018.

B-9 • Between November 2018 and March 2019 minor incremental movement is observed in the A-Axis. Movement on the A-Axis is observed to be approximately 0.20 inches.

• Incremental movement is observed on the A-Axis. The point of deflection in the inclinometer casing associated with this movement is at a depth of


approximately 64 feet. This accumulated movement is approximately 0.90 inches since April 2009. The low magnitude of variation in the data measurements since April 2009 has exceeded the limits of the measurement resolution of the inclinometer and clearly shows minor systematic and incremental movement in this area of the Sherwood Hills landslide complex.

• Incremental movement has been observed on the B-axis since April 2009. Movement on the B-Axis was not able to be assessed for the March 2019 readings. It appears that due to the amount of deflection in the inclinometer casing, the readings are becoming increasingly unreliable. The point of deflection in the inclinometer casing associated with movement on the B-Axis is at a depth of approximately 64 feet. The accumulated movement on the B-Axis is approximately 1.20 inches since April 2009. The measurements since April 2009 exceed the limits of the measurement resolution of the inclinometer and clearly show minor incremental movement in this area of the Sherwood Hills landslide complex.

• At a depth of approximately 64 feet, the inclinometer casing is bent sharply which causes the inclinometer probe to stick when being pulled up at this depth. It is our opinion that this bend in the inclinometer casing is resulting in erroneous scatter of data for readings which is making the data in this inclinometer increasingly unreliable.

• Groundwater was measured at a depth of approximately 14.8 ft in the area of B-9 in March 2019. Groundwater level has dropped approximately 4 feet since November 2018. The deflection point at approximately 64 feet in this inclinometer is approximately 50 feet below the current groundwater level. It is possible that this deeper deflection point continued to experience incremental movement despite the measured 4 feet drop in groundwater level at this location due to the greater hydrostatic head that exists at 64 feet in depth.

B-10 • Between July 2018 and November 2018 incremental movement was observed on both the A-Axis and B-Axis. Movement on the A-Axis and B-Axis is observed to be approximately 0.05 to 0.08 inches.

• Incremental movement is observed on the A-Axis. There are two deflection points. The deeper point of deflection in the inclinometer casing is at a depth of approximately 50 to 55 feet. The accumulated movement at this depth is approximately 1.10 inches since June 2011. The shallower deflection point is observed at a depth of approximately 10 feet. The accumulated movement at this depth is approximately 0.80 inches since June 2011. Due to the curved and relatively indistinct nature of the deflection point, this shallower movement may be related to near-surface creep. The low magnitude of variation in the data measurements since June 2011 has exceeded the limits of the measurement resolution of the inclinometer and clearly shows systematic and incremental movement in this area of the Sherwood Hills landslide complex.

• Minor incremental movement is observed on the B-Axis. The point of deflection in the inclinometer casing associated with this movement is at a


depth of approximately 50 to 55 feet. The accumulated movement is approximately 1.10 inches since June 2011. The low magnitude of variation in the data measurements since June 2011 has exceeded the limits of the measurement resolution of the inclinometer and clearly shows systematic and incremental movement in this area of the Sherwood Hills landslide complex.

• No groundwater data is available in the area of B-10. B-13 • Between November 2018 and March 2019 incremental movement was

observed on both the A-Axis. Movement on the A-Axis is observed to be approximately 0.10 inches. No significant movement is observed on the B-Axis.

• Incremental movement is observed on the A-Axis since March 2013. The point of deflection in the inclinometer casing associated with this movement is at a depth of approximately 72 feet. The accumulated movement is approximately 0.2 inches since March 2013. The low magnitude of variation in the data measurements since March 2013 has exceeded the limits of the measurement resolution of the inclinometer and shows minor movement in this area of the Sherwood Hills landslide complex. Prior to the March 2019 reading, movement on the A-Axis does not appear to be systematic or incremental.

• Between March 2013 and March 2019 no significant cumulative movement has been observed in the B-Axis. Cumulative movement in the B-Axis is observed to be approximately 0.10 inches. The movement does not appear to be systematic or incremental. This movement is below the limits of the measurement resolution of the inclinometer.

• No groundwater data is available in the area of B-13. B-14 • Between November 2018 and March 2019 minor incremental movement of

approximately 0.05 inches is observed in the A-Axis while no significant movement was observed on the B-Axis.

• Incremental movement is observed on the A-Axis since March 2013. The point of deflection in the inclinometer casing associated with this movement is at a depth of approximately 28 to 32 feet. The accumulated movement is approximately 1.70 to 2.10 inches since March 2013. The low magnitude of variation in the data measurements since March 2013 has exceeded the limits of the measurement resolution of the inclinometer and clearly shows minor to moderate systematic and incremental movement in this area of the Sherwood Hills landslide complex.

• Since March 2013 minor incremental movement is observed on the B-Axis. The accumulated movement on the B-Axis is approximately 0.20 inches since March 2013. The point of deflection in the inclinometer casing associated with this movement is at a depth of approximately 28 to 32 feet. The low magnitude of variation in the data measurements since March 2013 has exceeded the limits of the measurement resolution of the inclinometer and clearly shows minor systematic and incremental movement in this area of the Sherwood Hills landslide complex.

• Groundwater was measured at a depth of approximately 4.0 ft BGS in the


area of B-14 (Well B-1) in March 2019. Groundwater level has dropped approximately 1.20 ft since November 2018. This fluctuation in groundwater does not appear to have changed the rate of movement observed in this inclinometer.

B-15 • Between November 2018 and March 2019 incremental movement of approximately 0.20 inches is observed in the A-Axis, while no significant movement is observed in the B-Axis.

• The A-Axis has two distinct points of deflection in the inclinometer casing. The deeper point of deflection associated is at a depth of approximately 96 feet. The shallower point of deflection is at a depth of approximately 32 feet. Since December 2015 the total cumulative movement in the inclinometer casing is approximately 0.45 to 0.60 inches at the deflection point at 96 feet. The accumulated movement at the deflection point at a depth of approximately 32 feet is approximately 0.20 inches since December 2015. These movements exceeded the limits of the measurement resolution of the inclinometer and clearly shows minor to moderate systematic and incremental movement in this area of the Sherwood Hills landslide complex.

• Between November 2018 and March 2019 no significant movement was observed on the B Axis. The accumulated minor movement on the B-Axis is under 0.10 inches since December 2015. This accumulated movement is currently just below the limits of the measurement resolution of the inclinometer.

• The groundwater monitoring well in the area of B-15 (Well B-7) was measured at a depth of 44.2 feet at the time of this site visit. Groundwater depth has varied in this location during the duration of our monitoring. Groundwater has risen approximately 2 feet since November 2018. Well B-7 has shown a steady incremental drop in water elevation since we initiated monitoring of this well in June 2011.

B-16 • Between November 2018 and March 2019 minor movement of approximately 0.10 inches is observed in the A-Axis while no significant movement was observed on the B-Axis.

• Since December 2015 the cumulative movement in the A-Axis is observed to be approximately 0.10 inches. Prior to the March 2019 reading, movement on the A-Axis does not appear to be systematic or incremental. The movement is currently below the limits of the measurement resolution of the inclinometer.

• Since December 2015 the cumulative movement in the B-Axis is observed to be less than 0.05 inches. This movement is currently below the limits of the measurement resolution of the inclinometer.

• Ground water was measured at a depth of approximately 59.7 ft in the area of B-16 (Well B-5) in March 2019. Groundwater level has risen approximately 5 ft since November 2018. This fluctuation in groundwater does not appears to have changed the rate of movement observed in this inclinometer.

B-17 • Inclinometer at location B-17 was installed in October 2017. The February 2018 reading is used as the baseline reading for this inclinometer.


• Between November 2018 and March 2019 minor incremental movement of the inclinometer casing was observed on both the A-Axis and the B-Axis.

• Since February 2018 minor accumulated movement on the A-Axis is observed to be approximately 0.15 inches. The point of deflection is at a depth of approximately 16 feet. Due to the curved and relatively indistinct nature of the deflection point, this shallower movement may be related to near-surface creep. The low magnitude of variation in the data measurements has exceeded the limits of the measurement resolution of the inclinometer and clearly shows minor incremental movement in this area of the Sherwood Hills landslide complex.

• Since February 2018, minor incremental movement is observed on the B-Axis. The point of deflection in the inclinometer casing associated with this movement is at a depth of approximately 16 feet. The accumulated movement is approximately 0.35 inches since February 2018. Due to the curved and relatively indistinct nature of the deflection point, this shallower movement may be related to near-surface creep. The low magnitude of variation in the data measurements since February 2018 has exceeded the limits of the measurement resolution of the inclinometer and clearly shows minor incremental movement in this area of the Sherwood Hills landslide complex.

• No groundwater data is available in the area of B-10. B-18 • Inclinometer at location B-18 was installed in October 2017. The February

2018 reading is used as the baseline reading for this inclinometer. • Between November 2018 and March 2019 movement of the inclinometer

casing was observed on both the A-Axis and the B-Axis. • Minor incremental movement is observed on the A-Axis at multiple depths.

It appears that deformation of the casing is occurring at depths of approximately between 4 to 14 feet and 46 to 76 feet. The points of deflection in the inclinometer casing associated with this movement are difficult to assess with the current data. Additional readings will be needed to assess the deflection points in this casing. The accumulated movement on the A-Axis at these depths is approximately 0.20 inches since February 2018. The low magnitude of variation in the data measurements since February 2018 has exceeded the limits of the measurement resolution of the inclinometer.

• Minor incremental movement is observed on the B-Axis at multiple depths. It appears that deformation of the casing is occurring at depths of approximately between 4 to 14 feet and 46 to 76 feet. The points of deflection in the inclinometer casing associated with this movement are difficult to assess with the current data. Additional readings will be needed to assess the deflection points in this casing. The accumulated movement on the B-Axis at these depths is approximately 0.20 to 0.50 inches since February 2018. The low magnitude of variation in the data measurements since February 2018 has exceeded the limits of the measurement resolution of the inclinometer.


• Groundwater was measured at this location (Well B-8) at a depth of approximately 23 feet in July 2018. No significant change in the groundwater elevation is observed since November 2018.

Golder-1 • Between November 2018 and March 2019 no significant movement was observed on either the A-Axis or B-Axis.

• Since June 2011 no significant accumulated movement has been observed on the A-Axis. The accumulated movement is under 0.10 inches and does not appear to be systematic or incremental. This movement is currently below the limits of the measurement resolution of the inclinometer.

• Since June 2011 no significant accumulated movement has been observed on the B-Axis. The accumulated movement is approximately 0.10 inches and does not appear to be systematic or incremental. This movement is currently below the limits of the measurement resolution of the inclinometer.

• No groundwater data is available in the area of Golder-1. Golder-2 • Between November 2018 and March 2019 no significant movement was

observed on either the A-Axis or B-Axis. • Since June 2011 no significant accumulated movement has been observed on

the A-Axis. The accumulated movement is approximately 0.10 inches and does not appear to be systematic or incremental. This movement is currently below the limits of the measurement resolution of the inclinometer.

• Since June 2011 no significant accumulated movement has been observed on the B-Axis. The accumulated movement is approximately 0.15 inches and does not appear to be systematic or incremental. This movement exceeds the limits of the measurement resolution of the inclinometer, but additional readings will be required to assess the significance of the measured movement.

• No groundwater data is available in the area of Golder-2. Golder-3 • Between November 2018 and March 2019 minor movement of

approximately 0.10 inches is observed in the A-Axis while no significant movement was observed on the B-Axis.

• Since June 2011 cumulative movement in the A-Axis is approximately 0.30 inches. The point of deflection in the inclinometer casing associated with the incremental movement on the A-Axis is at a depth of approximately 30 feet. The low magnitude of variation in the data measurements since June 2011 has exceeded the limits of the measurement resolution of the inclinometer and clearly shows minor incremental movement in this area of the Sherwood Hills landslide complex.

• Since June 2011 no significant accumulated movement has been observed on the B-Axis. The accumulated movement is under 0.10 inches since June 2011. The movement does not appear to be systematic or incremental. This movement is currently below the limits of the measurement resolution of the inclinometer.

• No groundwater data is available in the area of Golder-3.


Conclusions Groundwater Groundwater elevation data presented in Table 1.0 shows historical groundwater elevation measurements. A decrease in groundwater elevation has been observed in all piezometers except B-7. The greatest decrease in depth to groundwater was observed to be 5 feet in Well B-5. The closest inclinometer is B-9 which is located down slope of Well B-5. The decrease of the groundwater elevation in our monitoring wells appears to correspond with an observed increased movement in some of the inclinometer measured in March 2019. There was an increase in the groundwater elevation in B-7 and there was an increase in movement in the nearby inclinometer B-15. Due to the measurable movement indicated by the inclinometer data, continued groundwater elevation monitoring is critical in understanding the possible connection between groundwater elevation and landslide movement in the Sherwood Hills area. Installation of ground water monitoring wells in some areas of the Sherwood Hills landslide complex where groundwater levels currently can not be measured should be considered. Inclinometers Measurable movement was recorded at inclinometer locations B-3, B-4, B-8, B-9, B-10, B-13, B-14, B-15, B-16, B-17, B-18, and Golder-3 between November 2018 and March 2019. Several inclinometer locations (B-1, B-2, B-5, B-7, B-12 and SH-1) have been completely sheared by past landslide movement and are no longer used for monitoring movement. New inclinometers B-15 and B-16 were installed in 2015 to replace the previously sheared and un-measurable inclinometer B-5 and inclinometer B-7. Replacement inclinometers for the existing B-8 and B-11 were installed in October 2017. The replacement inclinometers are identified as B-18 and B-17 and are identified in the attached Inclinometer Location Map (Plate 1). These inclinometers were replaced in an effort to maintain monitoring in areas of significant movement. Replacement for B-11 (B-17) was also drilled to a deeper elevation than B-11 to attempt to reach a suspected detachment surface deeper that B-11 was installed. Movement observed within B-17 and B-18 from November 2018 to March 2019 may be caused by continued settlement of the inclinometer casing as bentonite is hydrated and the grout cures around the casing. Baseline readings of these inclinometers have been collected and subsequent readings will be taken on a triannual basis. Recommendations Groundwater We recommend continuing the monitoring program for all groundwater monitoring wells that occurs at a minimum of a triannual basis in order to maintain reliable data of the influence of water level on the rate of landslide movement. Maintenance and repair of the piezometers was completed during the winter months of 2018. In addition, GeoStrata recommends the installation of additional piezometers in order to better correlate groundwater levels with movement within the Sherwood Hills landslide complex.


Inclinometers For all existing inclinometers, we recommend maintaining a monitoring program in an effort to help Provo City make good decisions about development in the area and maintaining public utilities. GeoStrata recommends that all inclinometers be monitored at least on a triannual basis. The following are recommendations for specific inclinometers: Inclinometer B-9

GeoStrata recommends that replacement of this casing be considered in the near future since it is located in a portion of the landslide complex that continues to exhibit active movement and the sharpness of the bend at a depth of approximately 64 feet may be causing readings in this inclinometer to be unreliable.

Inclinometer B-14

GeoStrata recommends that replacement of this casing be considered in the near future since it is located in a portion of the landslide mass that continues to exhibit active movement. The casing is now displaced over 2 inches since March 2013.

Inclinometer Golder-3 Due to the measured continued movement in this inclinometer and the high-pressure gas line near this inclinometer, we recommend monitoring of this inclinometer on a more frequent basis in order to establish an accurate rate of movement in this portion of the landslide. We also recommend that consideration be made to adding additional inclinometers near this location due to continued observed movement at this location and at monitoring locations B-8 and B-9 which are uphill of the Golder-3 location.

We recommend that consideration be given to the construction and installation of additional piezometers and replacement inclinometer casings in the actively moving portion of the Sherwood Hills landslide. All these recommendations will support the City’s efforts in protecting the existing utilities and infrastructure.


Ω We appreciate the opportunity to provide these services. Please contact us if you have questions regarding the information provided in this document. Respectfully, GeoStrata Daniel J. Brown, P.E. Timothy J. Thompson, P.G. Senior Geotechnical Engineer Principal Geologist Sofia Agopian Staff Geologist

05/20/19

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Copyright GeoStrata 2019±Provo CitySherwood Hills LandslideProvo, Utah Project Number: 521-001

Legend!? Active Inclinometer

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Sherwood Hills Landslide Complex

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Sherwood Hills Inclinometer MonitoringProvo CityProvo, UTProject Number 521-001

Inclinometer Data B-3Plate

2Copyright GeoStrata 2019

RST Instruments Ltd. Inclinalysis v. 2.48.7 CUMULATIVE DISPLACEMENT

Borehole : Borehole_3a Project : PROVO Location : Northing : 4460951.84 m Easting : 445693.27 m Collar :

Spiral Correction : N/A Collar Elevation : 0.00 feet Reading Depth : 76.0 feet A+ Groove Azimuth : 160 Base Reading : 2009 Oct 13 11:31 Applied Azimuth : 0.0 degrees

Axis - A

Cumulative Displacement (inches) -2.00 -1.50 -1.00 -0.50 0.00 0.50 1.00 1.50 2.00

Depth

(feet)

0.0 -3.0 -6.0 -9.0

-12.0 -15.0 -18.0 -21.0 -24.0 -27.0 -30.0 -33.0 -36.0 -39.0 -42.0 -45.0 -48.0 -51.0 -54.0 -57.0 -60.0 -63.0 -66.0 -69.0 -72.0 -75.0 -78.0 -81.0

Borehole_3a(26) 04-Mar-19 Borehole_3a(25) 06-Nov-18 Borehole_3a(24) 26-Jul-18 Borehole_3a(23) 26-Feb-18 Borehole_3a(22) 24-Oct-17 Borehole_3a(20) 12-Jun-17 Borehole_3a(19) 28-Dec-16 Borehole_3a(16) 15-Dec-15 Borehole_3a(15) 17-Jun-15 Borehole_3a(14) 03-Dec-14 Borehole_3a(13) 18-Apr-14 Borehole_3a(12) 09-Oct-13 Borehole_3a(11) 26-Apr-13 Borehole_3a(10) 05-Oct-12 Borehole_3a(9) 02-May-12 Borehole_3a(8) 04-Oct-11 Borehole_3a(7) 21-Jun-11 Borehole_3a(6) 28-Oct-10 Borehole_3a(5) 22-Apr-10

Axis - B


Depth

(feet)

0.0 -3.0 -6.0 -9.0

-12.0 -15.0 -18.0 -21.0 -24.0 -27.0 -30.0 -33.0 -36.0 -39.0 -42.0 -45.0 -48.0 -51.0 -54.0 -57.0 -60.0 -63.0 -66.0 -69.0 -72.0 -75.0 -78.0 -81.0

Borehole_3a(26) 04-Mar-19 Borehole_3a(25) 06-Nov-18 Borehole_3a(24) 26-Jul-18 Borehole_3a(23) 26-Feb-18 Borehole_3a(22) 24-Oct-17 Borehole_3a(20) 12-Jun-17 Borehole_3a(19) 28-Dec-16 Borehole_3a(16) 15-Dec-15 Borehole_3a(15) 17-Jun-15 Borehole_3a(14) 03-Dec-14 Borehole_3a(13) 18-Apr-14 Borehole_3a(12) 09-Oct-13 Borehole_3a(11) 26-Apr-13 Borehole_3a(10) 05-Oct-12 Borehole_3a(9) 02-May-12 Borehole_3a(8) 04-Oct-11 Borehole_3a(7) 21-Jun-11 Borehole_3a(6) 28-Oct-10 Borehole_3a(5) 22-Apr-10





Borehole : Borehole_4 Project : PROVO Location : Northing : 4460843.78 m Easting : 445430.37 m Collar :

Spiral Correction : N/A Collar Elevation : 0.00 feet Reading Depth : 96.0 feet A+ Groove Azimuth : 230 Base Reading : 2015 Dec 17 13:15 Applied Azimuth : 0.0 degrees

Axis - A


Depth

(feet)

0 -4 -8

-12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72 -76 -80 -84 -88 -92 -96

-100

Borehole_4(25) 05-Mar-19 Borehole_4(24)2 06-Nov-18 Borehole_4(23) 26-Jul-18 Borehole_4(22) 26-Feb-18 Borehole_4(21) 24-Oct-17 Borehole_4(20) 19-Oct-17 Borehole_4(19) 12-Jun-17 Borehole_4(18) 02-Dec-16 Borehole_4(17) 24-Dec-15

Axis - B


Depth

(feet)

0 -4 -8

-12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72 -76 -80 -84 -88 -92 -96

-100

Borehole_4(25) 05-Mar-19 Borehole_4(24)2 06-Nov-18 Borehole_4(23) 26-Jul-18 Borehole_4(22) 26-Feb-18 Borehole_4(21) 24-Oct-17 Borehole_4(20) 19-Oct-17 Borehole_4(19) 12-Jun-17 Borehole_4(18) 02-Dec-16 Borehole_4(17) 24-Dec-15





Borehole : Borehole_6 e to w Project : PROVO Location : Northing : 4459880.19 m Easting : 446050.88 m Collar :

Spiral Correction : N/A Collar Elevation : 0.00 feet Reading Depth : 72.0 feet A+ Groove Azimuth : 265 Base Reading : 2009 Apr 08 14:40 Applied Azimuth : 0.0 degrees

Axis - A


Depth

(feet)

6.0 3.0 0.0

-3.0 -6.0 -9.0

-12.0 -15.0 -18.0 -21.0 -24.0 -27.0 -30.0 -33.0 -36.0 -39.0 -42.0 -45.0 -48.0 -51.0 -54.0 -57.0 -60.0 -63.0 -66.0 -69.0 -72.0 -75.0 -78.0

Borehole_6 e to w (24) 05-Mar-19 Borehole_6 e to w (23) 06-Nov-18 Borehole_6 e to w (22) 26-Jul-18 Borehole_6 e to w (21) 27-Feb-18 Borehole_6 e to w (20) 19-Oct-17 Borehole_6 e to w (19) 13-Jun-17 Borehole_6 e to w (18) 02-Dec-16 Borehole_6 e to w (17) 16-Dec-15 Borehole_6 e to w (16) 17-Jun-15 Borehole_6 e to w (15) 03-Dec-14 Borehole_6 e to w (14) 18-Apr-14 Borehole_6 e to w (13) 09-Oct-13 Borehole_6 e to w (12) 01-Apr-13 Borehole_6 e to w (11) 05-Oct-12 Borehole_6 e to w (10) 02-May-12 Borehole_6 e to w (9) 27-Oct-11 Borehole_6 e to w (7) 21-Jun-11 Borehole_6 e to w (5) 27-Apr-10 Borehole_6 e to w (4) 18-Nov-09 Borehole_6 e to w (3) 20-Oct-09

Axis - B


Depth

(feet)

6.0 3.0 0.0

-3.0 -6.0 -9.0

-12.0 -15.0 -18.0 -21.0 -24.0 -27.0 -30.0 -33.0 -36.0 -39.0 -42.0 -45.0 -48.0 -51.0 -54.0 -57.0 -60.0 -63.0 -66.0 -69.0 -72.0 -75.0 -78.0

Borehole_6 e to w (24) 05-Mar-19 Borehole_6 e to w (23) 06-Nov-18 Borehole_6 e to w (22) 26-Jul-18 Borehole_6 e to w (21) 27-Feb-18 Borehole_6 e to w (20) 19-Oct-17 Borehole_6 e to w (19) 13-Jun-17 Borehole_6 e to w (18) 02-Dec-16 Borehole_6 e to w (17) 16-Dec-15 Borehole_6 e to w (16) 17-Jun-15 Borehole_6 e to w (15) 03-Dec-14 Borehole_6 e to w (14) 18-Apr-14 Borehole_6 e to w (13) 09-Oct-13 Borehole_6 e to w (12) 01-Apr-13 Borehole_6 e to w (11) 05-Oct-12 Borehole_6 e to w (10) 02-May-12 Borehole_6 e to w (9) 27-Oct-11 Borehole_6 e to w (7) 21-Jun-11 Borehole_6 e to w (5) 27-Apr-10 Borehole_6 e to w (4) 18-Nov-09 Borehole_6 e to w (3) 20-Oct-09







Axis - A


Depth

(feet)

0.0 -4.0 -8.0

-12.0 -16.0 -20.0 -24.0 -28.0 -32.0 -36.0 -40.0 -44.0 -48.0 -52.0 -56.0 -60.0 -64.0 -68.0 -72.0 -76.0 -80.0 -84.0 -88.0

Borehole_8(5)b 04-Mar-19 Borehole_8(4) 02-Nov-18 Borehole_8(3) 26-Jul-18 Borehole_8(2) 26-Feb-18 Borehole_8(1) 21-Nov-17 Borehole_8 e to w (18) 13-Jun-17 Borehole_8 e to w (17) 02-Dec-16 Borehole_8 e to w (16) 24-Dec-15 Borehole_8 e to w (15) 17-Dec-15 Borehole_8 e to w (14) 17-Jun-15 Borehole_8 e to w (13) 02-Dec-14 Borehole_8 e to w (12) 21-Apr-14 Borehole_8 e to w (11) 09-Oct-13 Borehole_8 e to w (10) 01-Apr-13 Borehole_8 e to w (9) 25-Oct-12 Borehole_8 e to w (8) 02-May-12 Borehole_8 e to w (7) 06-Oct-11 Borehole_8 e to w (6) 21-Jun-11 Borehole_8 e to w (4) 27-Apr-10 Borehole_8 e to w (2) 19-Nov-09 Borehole_8 e to w (3) 13-Oct-09

Axis - B


Depth

(feet)

0.0 -4.0 -8.0

-12.0 -16.0 -20.0 -24.0 -28.0 -32.0 -36.0 -40.0 -44.0 -48.0 -52.0 -56.0 -60.0 -64.0 -68.0 -72.0 -76.0 -80.0 -84.0 -88.0

Borehole_8(5)b 04-Mar-19 Borehole_8(4) 02-Nov-18 Borehole_8(3) 26-Jul-18 Borehole_8(2) 26-Feb-18 Borehole_8(1) 21-Nov-17 Borehole_8 e to w (18) 13-Jun-17 Borehole_8 e to w (17) 02-Dec-16 Borehole_8 e to w (16) 24-Dec-15 Borehole_8 e to w (15) 17-Dec-15 Borehole_8 e to w (14) 17-Jun-15 Borehole_8 e to w (13) 02-Dec-14 Borehole_8 e to w (12) 21-Apr-14 Borehole_8 e to w (11) 09-Oct-13 Borehole_8 e to w (10) 01-Apr-13 Borehole_8 e to w (9) 25-Oct-12 Borehole_8 e to w (8) 02-May-12 Borehole_8 e to w (7) 06-Oct-11 Borehole_8 e to w (6) 21-Jun-11 Borehole_8 e to w (4) 27-Apr-10 Borehole_8 e to w (2) 19-Nov-09 Borehole_8 e to w (3) 13-Oct-09







Axis - A

Cumulative Displacement (inches) -1.50 -1.35 -1.20 -1.05 -0.90 -0.75 -0.60 -0.45 -0.30 -0.15 -0.00 0.15 0.30 0.45 0.60 0.75 0.90 1.05 1.20 1.35 1.50

Depth

(feet)

0.0

-4.0

-8.0

-12.0

-16.0

-20.0

-24.0

-28.0

-32.0

-36.0

-40.0

-44.0

-48.0

-52.0

-56.0

-60.0

-64.0

-68.0

Borehole_9 e to w (23)b 05-Mar-19 Borehole_9 e to w (22)b 02-Nov-18 Borehole_9 e to w (21) 26-Jul-18 Borehole_9 e to w (20) 27-Feb-18 Borehole_9 e to w (19) 19-Oct-17 Borehole_9 e to w (18)2 13-Jun-17 Borehole_9 e to w (15)2 17-Dec-15 Borehole_9 e to w (14)2 17-Jun-15 Borehole_9 e to w (13)2 02-Dec-14 Borehole_9 e to w (12)2 21-Apr-14 Borehole_9 e to w (11) 09-Oct-13 Borehole_9 e to w (10) 01-Apr-13 Borehole_9 e to w (9) 25-Oct-12 Borehole_9 e to w (8) 02-May-12 Borehole_9 e to w (7) 06-Oct-11 Borehole_9 e to w (6) 21-Jun-11 Borehole_9 e to w (3) 19-Nov-09 Borehole_9 e to w (2) 13-Oct-09

Axis - B

Cumulative Displacement (inches) -1.50 -1.35 -1.20 -1.05 -0.90 -0.75 -0.60 -0.45 -0.30 -0.15 -0.00 0.15 0.30 0.45 0.60 0.75 0.90 1.05 1.20 1.35 1.50

Depth

(feet)

0.0

-4.0

-8.0

-12.0

-16.0

-20.0

-24.0

-28.0

-32.0

-36.0

-40.0

-44.0

-48.0

-52.0

-56.0

-60.0

-64.0

-68.0

Borehole_9 e to w (23)b 05-Mar-19 Borehole_9 e to w (22)b 02-Nov-18 Borehole_9 e to w (21) 26-Jul-18 Borehole_9 e to w (20) 27-Feb-18 Borehole_9 e to w (19) 19-Oct-17 Borehole_9 e to w (18)2 13-Jun-17 Borehole_9 e to w (15)2 17-Dec-15 Borehole_9 e to w (14)2 17-Jun-15 Borehole_9 e to w (13)2 02-Dec-14 Borehole_9 e to w (12)2 21-Apr-14 Borehole_9 e to w (11) 09-Oct-13 Borehole_9 e to w (10) 01-Apr-13 Borehole_9 e to w (9) 25-Oct-12 Borehole_9 e to w (8) 02-May-12 Borehole_9 e to w (7) 06-Oct-11 Borehole_9 e to w (6) 21-Jun-11 Borehole_9 e to w (3) 19-Nov-09 Borehole_9 e to w (2) 13-Oct-09






Spiral Correction : N/A Collar Elevation : 0.00 feet Reading Depth : 66.0 feet A+ Groove Azimuth : 260 Base Reading : 2011 Jun 22 10:43 Applied Azimuth : 0.0 degrees

Axis - A

Cumulative Displacement (inches) -2.50 -2.00 -1.50 -1.00 -0.50 0.00 0.50 1.00 1.50 2.00 2.50

Depth

(feet)

0.0

-4.0

-8.0

-12.0

-16.0

-20.0

-24.0

-28.0

-32.0

-36.0

-40.0

-44.0

-48.0

-52.0

-56.0

-60.0

-64.0

-68.0

Borehole_10(8) 04-Mar-19 Borehole_10(7) 06-Nov-18 Borehole_10(5) 26-Jul-18 Borehole_10(4) 26-Feb-18 Borehole_10(3) 19-Oct-17 Borehole_10(1) 12-Jun-17 G1(13) 30-Nov-16 G1(12) 15-Dec-15 G1(11) 25-Jun-15 G1(10) 03-Dec-14 G1(9) 18-Apr-14 G1(8) 09-Oct-13 G1(7) 01-Apr-13 G1(6) 05-Oct-12 G1(5) 02-May-12 G1(4) 25-Oct-11 G1(3) 05-Oct-11

Axis - B


Depth

(feet)

0.0

-4.0

-8.0

-12.0

-16.0

-20.0

-24.0

-28.0

-32.0

-36.0

-40.0

-44.0

-48.0

-52.0

-56.0

-60.0

-64.0

-68.0

Borehole_10(8) 04-Mar-19 Borehole_10(7) 06-Nov-18 Borehole_10(5) 26-Jul-18 Borehole_10(4) 26-Feb-18 Borehole_10(3) 19-Oct-17 Borehole_10(1) 12-Jun-17 G1(13) 30-Nov-16 G1(12) 15-Dec-15 G1(11) 25-Jun-15 G1(10) 03-Dec-14 G1(9) 18-Apr-14 G1(8) 09-Oct-13 G1(7) 01-Apr-13 G1(6) 05-Oct-12 G1(5) 02-May-12 G1(4) 25-Oct-11 G1(3) 05-Oct-11






Spiral Correction : N/A Collar Elevation : 0.00 feet Reading Depth : 98.0 feet A+ Groove Azimuth : 327 Base Reading : 2013 Mar 28 15:56 Applied Azimuth : 0.0 degrees

Axis - A


Depth

(feet)

0 -4 -8

-12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72 -76 -80 -84 -88 -92 -96

-100

Borehole_13(18) 04-Mar-19 Borehole_13(17) 06-Nov-18 Borehole_13(15) 26-Jul-18 Borehole_13(14) 26-Feb-18 Borehole_13(13) 19-Oct-17 Borehole_13(12) 12-Jun-17 Borehole_13(11) 02-Dec-16 Borehole_13(10) 15-Dec-15 Borehole_13(9) 17-Jun-15 Borehole_13(8) 09-Dec-14 Borehole_13(6) 18-Apr-14 Borehole_13(5) 09-Oct-13 Borehole_13(4) 13-Aug-13 Borehole_13(3) 29-Apr-13

Axis - B


Depth

(feet)

0 -4 -8

-12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72 -76 -80 -84 -88 -92 -96

-100

Borehole_13(18) 04-Mar-19 Borehole_13(17) 06-Nov-18 Borehole_13(15) 26-Jul-18 Borehole_13(14) 26-Feb-18 Borehole_13(13) 19-Oct-17 Borehole_13(12) 12-Jun-17 Borehole_13(11) 02-Dec-16 Borehole_13(10) 15-Dec-15 Borehole_13(9) 17-Jun-15 Borehole_13(8) 09-Dec-14 Borehole_13(6) 18-Apr-14 Borehole_13(5) 09-Oct-13 Borehole_13(4) 13-Aug-13 Borehole_13(3) 29-Apr-13






Spiral Correction : N/A Collar Elevation : 0.00 feet Reading Depth : 38.0 feet A+ Groove Azimuth : 270 Base Reading : 2013 Mar 28 16:26 Applied Azimuth : 0.0 degrees

Axis - A


Depth

(feet)

0.0

-4.0

-8.0

-12.0

-16.0

-20.0

-24.0

-28.0

-32.0

-36.0

-40.0

Borehole_14(17) 05-Mar-19 Borehole_14(16) 02-Nov-18 Borehole_14(15) 26-Jul-18 Borehole_14(14) 27-Feb-18 Borehole_14(13) 19-Oct-17 Borehole_14(12) 13-Jun-17 Borehole_14(11) 30-Nov-16 Borehole_14(10) 17-Dec-15 Borehole_14(9) 17-Jun-15 Borehole_14(8) 02-Dec-14 Borehole_14(7) 21-Apr-14 Borehole_14(6) 09-Oct-13 Borehole_14(4) 13-Aug-13 Borehole_14(3) 29-Apr-13

Axis - B


Depth

(feet)

0.0

-4.0

-8.0

-12.0

-16.0

-20.0

-24.0

-28.0

-32.0

-36.0

-40.0

Borehole_14(17) 05-Mar-19 Borehole_14(16) 02-Nov-18 Borehole_14(15) 26-Jul-18 Borehole_14(14) 27-Feb-18 Borehole_14(13) 19-Oct-17 Borehole_14(12) 13-Jun-17 Borehole_14(11) 30-Nov-16 Borehole_14(10) 17-Dec-15 Borehole_14(9) 17-Jun-15 Borehole_14(8) 02-Dec-14 Borehole_14(7) 21-Apr-14 Borehole_14(6) 09-Oct-13 Borehole_14(4) 13-Aug-13 Borehole_14(3) 29-Apr-13







Axis - A


Depth

(feet)

0 -4 -8

-12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72 -76 -80 -84 -88 -92 -96

-100 -104

Borehole_15(6) 04-Mar-19 Borehole_15(5) 06-Nov-18 Borehole_15(4) 27-Jul-18 Borehole_15(3) 27-Feb-18 Borehole_15(2) 19-Oct-17 Borehole_15(1) 13-Jun-17 _Borehole_15(2) 02-Dec-16

Axis - B


Depth

(feet)

0 -4 -8

-12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72 -76 -80 -84 -88 -92 -96

-100 -104








Axis - A


Depth

(feet)

6

0

-6

-12

-18

-24

-30

-36

-42

-48

-54

-60

-66

-72

-78

-84

-90

-96

-102


Axis - B


Depth

(feet)

6

0

-6

-12

-18

-24

-30

-36

-42

-48

-54

-60

-66

-72

-78

-84

-90

-96

-102







Spiral Correction : N/A Collar Elevation : 0.00 feet Reading Depth : 98.0 feet A+ Groove Azimuth : 320 Base Reading : 2018 Feb 26 16:54 Applied Azimuth : 0.0 degrees

Axis - A


Depth

(feet)

0 -4 -8

-12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72 -76 -80 -84 -88 -92 -96

-100

Borehole_17(6)a 05-Mar-19 Borehole_17(5)2 02-Nov-18 Borehole_17(4) 26-Jul-18 Borehole_17(3) 02-Mar-18

Axis - B


Depth

(feet)

0 -4 -8

-12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72 -76 -80 -84 -88 -92 -96

-100

Borehole_17(6)a 05-Mar-19 Borehole_17(5)2 02-Nov-18 Borehole_17(4) 26-Jul-18 Borehole_17(3) 02-Mar-18






Spiral Correction : N/A Collar Elevation : 0.00 feet Reading Depth : 96.0 feet A+ Groove Azimuth : 275 Base Reading : Applied Azimuth : 0.0 degrees

Axis - A


Depth

(feet)

0 -4 -8

-12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72 -76 -80 -84 -88 -92 -96

-100

Borehole_18(6)a2 05-Mar-19 Borehole_18(5a)2 02-Nov-18 Borehole_18(4) 27-Jul-18 Borehole_18(3) 02-Mar-18

Axis - B


Depth

(feet)

0 -4 -8

-12 -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 -56 -60 -64 -68 -72 -76 -80 -84 -88 -92 -96

-100

Borehole_18(6)a2 05-Mar-19 Borehole_18(5a)2 02-Nov-18 Borehole_18(4) 27-Jul-18 Borehole_18(3) 02-Mar-18


Inclinometer Data Golder-1Plate



Borehole : Golder_1 Project : PROVO Location : Northing : 4460723.99 m Easting : 445369.67 m Collar :


Axis - A


Depth

(feet)

0.0 -4.0 -8.0

-12.0 -16.0 -20.0 -24.0 -28.0 -32.0 -36.0 -40.0 -44.0 -48.0 -52.0 -56.0 -60.0 -64.0 -68.0 -72.0 -76.0 -80.0 -84.0 -88.0

Golder_1(21) 04-Mar-19 Golder_1(20) 06-Nov-18 Golder_1(19)2 26-Jul-18 Golder_1(18) 27-Feb-18 Golder_1(17) 24-Oct-17 Golder_1(15) 14-Jun-17 Golder_1(14) 13-Dec-16 Golder_1(13) 15-Dec-15 Golder_1(12) 17-Jun-15 Golder_1(11) 02-Dec-14 Golder_1(10) 18-Apr-14 Golder_1(9) 10-Oct-13 Golder_1(8) 01-Apr-13 Golder_1(7) 26-Oct-12 Golder_1(6) 08-May-12 Golder_1(5) 07-Oct-11

Axis - B


Depth

(feet)

0.0 -4.0 -8.0

-12.0 -16.0 -20.0 -24.0 -28.0 -32.0 -36.0 -40.0 -44.0 -48.0 -52.0 -56.0 -60.0 -64.0 -68.0 -72.0 -76.0 -80.0 -84.0 -88.0

Golder_1(21) 04-Mar-19 Golder_1(20) 06-Nov-18 Golder_1(19)2 26-Jul-18 Golder_1(18) 27-Feb-18 Golder_1(17) 24-Oct-17 Golder_1(15) 14-Jun-17 Golder_1(14) 13-Dec-16 Golder_1(13) 15-Dec-15 Golder_1(12) 17-Jun-15 Golder_1(11) 02-Dec-14 Golder_1(10) 18-Apr-14 Golder_1(9) 10-Oct-13 Golder_1(8) 01-Apr-13 Golder_1(7) 26-Oct-12 Golder_1(6) 08-May-12 Golder_1(5) 07-Oct-11







Axis - A


Depth

(feet)

0.0 -4.0 -8.0

-12.0 -16.0 -20.0 -24.0 -28.0 -32.0 -36.0 -40.0 -44.0 -48.0 -52.0 -56.0 -60.0 -64.0 -68.0 -72.0 -76.0 -80.0 -84.0 -88.0 -92.0 -96.0

Golder_2(22) 04-Mar-19 Golder_2(21) 06-Nov-18 Golder_2(19) 26-Jul-18 Golder_2(18) 27-Feb-18 Golder_2(17) 20-Oct-17 Golder_2(16) 13-Jun-17 Golder_2(15) 02-Dec-16 Golder_2(14) 15-Dec-15 Golder_2(13) 25-Jun-15 Golder_2(11) 02-Dec-14 Golder_2(10) 17-Apr-14 Golder_2(9) 10-Oct-13 Golder_2(8) 01-Apr-13 Golder_2(7) 26-Oct-12 Golder_2(6) 08-May-12 Golder_2(5) 06-Oct-11

Axis - B


Depth

(feet)

0.0 -4.0 -8.0

-12.0 -16.0 -20.0 -24.0 -28.0 -32.0 -36.0 -40.0 -44.0 -48.0 -52.0 -56.0 -60.0 -64.0 -68.0 -72.0 -76.0 -80.0 -84.0 -88.0 -92.0 -96.0

Golder_2(22) 04-Mar-19 Golder_2(21) 06-Nov-18 Golder_2(19) 26-Jul-18 Golder_2(18) 27-Feb-18 Golder_2(17) 20-Oct-17 Golder_2(16) 13-Jun-17 Golder_2(15) 02-Dec-16 Golder_2(14) 15-Dec-15 Golder_2(13) 25-Jun-15 Golder_2(11) 02-Dec-14 Golder_2(10) 17-Apr-14 Golder_2(9) 10-Oct-13 Golder_2(8) 01-Apr-13 Golder_2(7) 26-Oct-12 Golder_2(6) 08-May-12 Golder_2(5) 06-Oct-11

Sherwood Hills Inclinometer MonitoringProvo CityProvo, UTProject Number 521-001Copyright GeoStrata 2019


16




Axis - A


Depth

(feet)

0.0

-4.0

-8.0

-12.0

-16.0

-20.0

-24.0

-28.0

-32.0

-36.0

-40.0

-44.0

-48.0

-52.0

-56.0

-60.0

-64.0

-68.0

-72.0

Golder_3(22) 05-Mar-19 Golder_3(21) 06-Nov-18 Golder_3(20) 07-Aug-18 Golder_3(18) 27-Feb-18 Golder_3(17) 20-Oct-17 Golder_3(16) 13-Jun-17 Golder_3(15) 13-Dec-16 Golder_3(14) 16-Dec-15 Golder_3(13) 17-Jun-15 Golder_3(12) 09-Dec-14 Golder_3(10) 21-Apr-14 Golder_3(9) 10-Oct-13 Golder_3(8) 29-Apr-13 Golder_3(7) 26-Oct-12

Axis - B


Depth

(feet)

0.0

-4.0

-8.0

-12.0

-16.0

-20.0

-24.0

-28.0

-32.0

-36.0

-40.0

-44.0

-48.0

-52.0

-56.0

-60.0

-64.0

-68.0

-72.0

Golder_3(22) 05-Mar-19 Golder_3(21) 06-Nov-18 Golder_3(20) 07-Aug-18 Golder_3(18) 27-Feb-18 Golder_3(17) 20-Oct-17 Golder_3(16) 13-Jun-17 Golder_3(15) 13-Dec-16 Golder_3(14) 16-Dec-15 Golder_3(13) 17-Jun-15 Golder_3(12) 09-Dec-14 Golder_3(10) 21-Apr-14 Golder_3(9) 10-Oct-13 Golder_3(8) 29-Apr-13 Golder_3(7) 26-Oct-12

april 2, 1998

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