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Geotechnical Engineering Investigation Page 7 of 24 New Residential Subdivision 2706 Pock Lane Stockton, CA 95205 March 30, 2021 CTE Job # 25-1097G The Tracy-Stockton Fault crosses from southwest near Tracy to the northeast near Linden,passing underneath the city of Stockton.The fault has no surface trace,and its position has been determined from oil well log data. Subsurface data indicates that the fault has not had any movement within the past three million years or more. Thus, this evidence could suggest that the fault is inactive. 4.6 Local and Regional Faulting The California Geological Survey(CGS)and the United States Geological Survey(USGS)broadly group faults as "Class A" or "Class B". Class A faults are identified based upon relatively well- defined paleoseismic activity, and a fault-slip rate of more than 5 millimeters per year (mm/yr). In contrast,Class B faults have comparatively less defined paleoseismic activity and typically have a fault-slip rate less than 5 mm/yr. The nearest known Class A fault is the Calaveras Fault located approximately 40.85 miles from the site and the nearest known Class B fault is the Great Valley 7 located approximately 20.44 miles from the site(U.S. Geological Survey(CGS),2006,Quaternary fault and fold database for the United States, accessed 3/16/2021, USGS web site https:Hearthquake.usgs.gov/cfusion/hazfaults 2008 search/query results.cfm). Information for other principal regional faults is included in Table 1, below. TABLE 4.6 NEAR SITE FAULT PARAMETERS DISTANCE MAXIMUM FAULT NAME FROM SITE EARTHQUAKE SLIP RATE MILES MAGNITUDE MM/YR GREAT VALLEY 7 20.44 6.90 1.5 GREENVILLE CONNECTED 28.61 7.00 2.0 GREAT VALLEY 5,PITTSBURG 33.40 6.70 1.0 KIRBY HILLS GREAT VALLEY 8 34.57 6.80 1.5 MOUNT DIABLO THRUST 34.63 6.70 2.0 CALAVERAS;CN 40.85 6.87 6.0 CALAVERAS;CN+CC+CS 40.85 7.03 N/A CALAVERAS;CN+CC 40.85 7.00 N/A GREEN VALLEY CONNECTED 40.87 6.80 4.7 Eff