Sam Ziemann From - Region of Waterloo

MemoTo: Lisa Lachuta, P.Eng. From: Roger Freymond, P.Eng.Region of Waterloo,Stantec, Kitchener150 Frederick St.File: 1611-10897/10 Date: July 23, 2010Reference: Technical Memorandum A1 –Strange Street Well Field Water Quality AssessmentOBJECTIVE:To document the available historical and current water quality trends from productionwells and monitoring wells in the Strange Street Well Field.OVERVIEW:The Regional Municipality of Waterloo (Region) is undertaking the Strange Street WaterSupply System Class Environmental Assessment (Class EA) Update. The primaryobjective of this study is to update the Class EA and Preliminary Design completed bythe Region in 2000, with the first component of this study focusing on groundwaterinvestigations. The groundwater investigation includes an assessment of historical andcurrent water quality data within the Strange Street Well Field supply aquifer.The Class EA has been broken down into several tasks, including a background reviewand assessment of existing groundwater quality data:1. A review of available historical groundwater quality data, including productionwells and nearby monitoring wells; and2. Implementation of a field monitoring program to obtain current water quality dataat select monitoring and residential wells.This Technical Memorandum contains four (4) attachments. Attachment A provideswater quality figures, and water quality tables are included in Attachment B.Attachments C and D contain Well Inventory Forms and Laboratory Certificates ofAnalysis, respectively.2010 WATER QUALITY SAMPLING PROGRAMGroundwater samples were collected from the following residential wells and municipalmonitoring wells in May, 2010 (Figure 1) in order to assess the water quality of theaquifer in the vicinity of the Strange Street production wells:• SS01-99;• SS06-99;• SS08-99;