2010 Drinking Water Quality Annual Report

Transcription

1 1 Town of Golden 2010 Drinking Water Quality Annual Report Facility No June 30, 2011

2 2 Table of Contents Page 1.0 Introduction Water Distribution System Overview Testing and Monitoring Program Maintenance and Repairs Improvements Operator Education and Training Cross Connection Control SCADA System Events/Emergency Response Future Plans for Sample Analysis Results Turbidity Summary 10 Appendix: DW Sub Maxxam Analytical Attachments: Emergency Response Plan

3 3 1.0 Introduction The purpose of this report is to provide information on the monitoring and maintenance of the Town of Golden s water distribution system as directed by Interior Health and as set forth by the Drinking Water Protection Act. The Drinking Water Quality Monitoring program generates valuable data for gaining an understanding of the water distribution system, and for evaluating the historic performance of the system in a reliable and systematic way. The monitoring regime also allows for potential health hazards to be quickly identified and dealt with and consumers water concerns to be accurately addressed in a timely manner. Included in this document is a brief introduction to the Town of Golden s water distribution system, consumption information and the drinking water monitoring and testing program. Also included is a summary of the water sample analyses results collected in The information contained herein collectively serves to provide confirmation of the distribution system s continued performance in delivering a safe and sufficient supply of drinking water to the community. During 2010 the Town of Golden continued to monitor and improve the domestic water supply as outlined in this report. 2.0 Water Distribution System Overview Groundwater Wells: There are 5 wells with a combined total pumping capacity of 1650 Igpm providing water to a common distribution system. Two wells are located on the north side of the Kicking Horse River and three are located on the south side. Reservoirs: There are 5 reservoirs located at 3 distinct reservoir sites within the municipality. The total available reservoir storage capacity is 1,517,000 Igal. The first site is located in the NE Benchland, the second and third sites are both located on the SE Benchland. Pressure Zones: There are 4 pressure zones throughout the system. Distribution System: Pipe sizes range from 150mm to 300mm. The pipe network includes asbestos cement (AC), polyvinylchloride (PVC), yellow jacket ductile iron (YJDI), ductile iron (DI), cast iron (CI) and polyethylene (PE) types. There are 140 fire hydrants included in an annual spring and fall maintenance program. Hydrant reports are forwarded on to operations staff each time a hydrant is used. Hydrants are not used for filling tankards other than Fire Trucks. 13 th Street Well: This well is not connected to the distribution system. It is used for non-potable water use by the municipality as well as authorized contractors Consumption Stats: The total water pumped in 2010 measured 260,028,292 Igal. Peak Day was recorded on July 25 with a total pumped volume of 1,490,318 Igal. Average Day Demand is estimated at 714,406 Igal.

4 4 3.0 Testing and Monitoring Program The water quality monitoring program includes source and distribution system monitoring. Routine weekly samples are collected at each well head and the reservoir sites. These samples are collected by Town of Golden Staff and forwarded to a private lab for microbiological testing. Lab results along with Consumption and Turbidity are reported to Public Health inspector on a monthly basis. In 2010 a total of 316 samples were analyzed for total coliforms and E.coli. Of the 316 samples analyzed two samples were positive for a 1-count of total coliforms and two samples were reported as having overgrown cultures with no visible background colonies detected. This demonstrates the outstanding performance of the Town of Golden s distribution system and its operation. As per schedule B of the Drinking Water Protection Act the Town of Golden is required to analyze 4 samples per month. To emphasize the Town of Golden s commitment to providing safe drinking water the number of samples analyzed is 28 per month. The Town of Golden regularly tests each source on an annual basis for physical and chemical parameters, as summarized in the appendix. 4.0 Maintenance and Repairs The Town of Golden has adopted an operations and maintenance (O&M) program that includes annual reservoir disinfections, annual hydrant inspections, maintenance and flushing, valve exercising, and dead end flushing. In 2010, one service connection leak was discovered and repaired. Current and historic maintenance records are available. Monthly operations reports on the water system are provided to Interior Health (IH). The Town of Golden has developed a GIS Mapserver which is currently under development and is intended to be used to access maintenance information by Systems staff. All of the Town of Golden s visible water infrastructure (i.e. water main valves, fire hydrant service valves and fire hydrants) were surveyed by a Global Position Satellite (GPS) in The data from this survey has been added to our mapping data base to improve the accuracy and reliability of our maps. 5.0 Improvements Supervisory Control and Data Acquisition (SCADA): Intrusion alarms were added to all reservoir hatches. Sampling Locations: Improvements to reservoir test points continued in 2010 to avoid sample port freezing with protective, secured and heated cabinets constructed at each reservoir sampling location. Water Distribution System: KKMP Ball Diamond Concession Improvements: Approximately 20m of 150mm PVC watermain and 90 m of 100mm PVC watermain were added to supply potable water to the concession building.

5 5 An automated blow-off (Hydro-guard) was incorporated to ensure dead-end water quality is maintained and a fire hydrant was added for fire protection. Trans Canada Highway Hill to Portal Phase 3 Improvements: Approximately 600 m of 250mm PVC watermain replaced existing smaller diameter mainlines in the general vicinity of the Trans Canada Highway and Golden Donald Upper Road intersection and adjacent frontage roads. Three additional hydrants were installed to improve existing hydrant spacing. Two 250mm dia. highway crossings are now in place to provide servicing redundancy as well as increased fire flows to the surrounding area. PRV Improvements: A line valve was added to allow for isolation on the 6 pressure reducing valve on Pine Drive. This facilitates maintenance of the PRV without isolating the street. Well 3 Improvements: Improvements to the air release system were made. Hydrants: A fire hydrant was installed near the KKMP Ball Diamonds Concession. A fire hydrant was added on 10 th avenue at the South East end of the bridge to improve hydrant spacing and provide additional fire flow delivery to a nearby commercial development. Three additional hydrants were installed as a part of the Hill to Portal Phase 3 work to improve existing hydrant spacing in that area. CPR Car Repair Shop Service Line: A 250mm extension on 9 th Ave South at 15 th St was added to service the CPR Car Repair Shop and bring CPR onto the Town s water. CPR installed a new meter/backflow building to house a new service line completed with bypass redundancy, meters and reduced pressure backflow assemblies. 12 th Street South Phase 1 Work (10 th Ave to 8 th Ave South): Approximately 24 existing curb stops were replaced within the contract work zone. Metering and Cross Connection: In 2010 all outstanding assessments were completed on all ICI connections to the distribution system. Work continued with the replacement of non-rf compatible water meters. In addition appropriate backflow devices were installed in 16 more ICI facilities; of which most were assessed as high hazard connections. In the future the Town of Golden will continue with its CCC program and look to complete more facilities. Source Protection Plan: The Aquifer Protection Planning Committee reconvened in Work has continued with Golder and Associates with significant effort put towards the investigation of Earth Energy (geothermal) Systems and the development of regulations regarding the installation of such systems within the municipal boundaries. It is anticipated that the completed study will go before Council in summer of 2011 after which the Committee will meet to review same. Emergency Response Plan: Reviewed annually and contacts updated. See attached

6 6.0 Operator Education and Training 6 The Town of Golden has established a training program that follows EOCP guidelines for required training. Operators have been qualifying to write exams as per EOCP guidelines on an ongoing basis. Operators received the following training in 2010: Lorne Pickering: Cross Connection Control Recertification Confined Space Awareness/Excavation Safety Al Taylor: Cross Connection Control Recertification Confined Space Awareness/Excavation Safety Keefer Dondaneau (hired November 2010) EOCP Current Certifications Employee Certification # Level Lorne Pickering 3879 WD-III CCC Tester Alan Taylor 6101 WD-II CCC Tester Keefer Dondaneau 7.0 Cross Connection Control In 2005 the Town of Golden along with Maintenance Training Systems (MTS) began a cross connection control program. A bylaw was introduced to allow the enforcement of a CCC Program. In 2005 the Town of Golden completed assessments on all Town owned facilities. Staff was trained during this process. The process of making our facilities compliant was started in 2005 and completed in early Two of our staff members are certified tester s and carry out tests on all municipal backflow assemblies. In 2010 all Town of Golden facilities were tested and recertified. The Town of Golden currently tests and tracks 34 backflow assembly devices located on various Town owned/operated facilities. It is now policy that the Town of Golden specifies the proper device for any new construction. After construction the backflow devices installed on private buildings are added to our database so that we can track and record the testing history of each assembly installed within the Town of Golden. Currently the Town of Golden tracks all Town owned and maintained facilities, most of which are Town maintained. The Town of Golden is a client with Maintenance Training Systems and is using their software for our CCC program. More information on this software can be found at: In 2010 the Town of Golden advanced its CCC program and installed the appropriate backflow devices on an additional 16 commercially zoned properties. 8.0 SCADA System Within the SCADA system numerous control parameters are in place allowing Town of Golden staff to make changes on an as-needed basis according to ongoing process changes.

7 Below is a summary of some of the things that the Town of Golden currently trends and reports-out on from the SCADA system. SE Booster Station Discharge flow in GPM s Discharge pressure Room temperature Flow Total in Gallons Reservoir Levels Reservoir Hatch Intrusion alarm Booster Pump Run Times Flood alarm NE Booster Station Discharge flow in GPM s Room Temperature Suction Pressure Booster Pump Run Times Reservoir Levels Reservoir Hatch Intrusion alarm Discharge Pressure Flood alarm Well Stations Flow totalizers in Gallons Pump Run Times Pressure Transducers in psi at all wells Room Temperatures Flood alarms 7 All trending is done on a daily basis and is in real time. In 2010 the SCADA trending system was reconfigured to provide operators with the ability to access digitally stored historical trending. Trending and reporting continues to be compiled into monthly and yearly reports. 9.0 Events/Emergency Response In May, 2010 both NE Reservoirs were cleaned and disinfected using AWWA C standards method 2. Lab reports for each reservoir were satisfactory prior to them being placed back on line Future Plans for 2011 Continue to make improvements to SCADA system; Clean and inspect Hypalon Reservoir (fall); Incorporate soft start controls into Well 3 to improve operational reliability; Continue with CCC Program and prioritize installs of BFP devices, concentrating on those facilities with a high hazard rating. Remove and replace existing water meters with new meters that use e-coders for totalizing and billing;

8 8 Continue public education campaign with respect to source to tap education, water conservation tips and tricks, enforcement of sprinkling regulations. Includes elementary school classroom visits by systems staff and newspaper advertising; Continue leak detection and repairs; Minor main upgrades and service repairs on an as required basis; Continue with the Groundwater Protection Community Planning Team under the facilitation of Dan Brown of Golder and Associates Sample Analysis Results DATE WELL#2 WELL#3 WELL#4 WELL#5 WELL#6 NE RES (yellow) NE RES BEARS RES. Jan 4/10 <1 <1 <1 <1 <1 <1 <1 Jan 11/10 <1 <1 <1 <1 <1 <1 <1 Jan 18/10 <1 <1 <1 <1 <1 <1 <1 Jan 25/10 <1 <1 <1 <1 <1 <1 <1 Feb 01/10 <1 <1 <1 <1 <1 <1 <1 Feb 08/10 OFF <1 <1 <1 <1 <1 <1 Feb 15/10 <1 <1 <1 <1 <1 <1 <1 Feb 22/10 <1 <1 <1 <1 <1 <1 <1 Mar 1/10 <1 <1 <1 <1 <1 <1 <1 Mar 8/10 <1 <1 <1 <1 <1 <1 <1 Mar 15/10 <1 <1 <1 <1 <1 <1 <1 Mar 22/10 <1 <1 <1 <1 <1 <1 <1 Mar 29/10 <1 <1 <1 <1 <1 <1 <1 Apr 5/10 No Samples Apr 12/10 <1 <1 <1 <1 <1 <1 <1 Apr 19/10 <1 <1 <1 <1 <1 <1 <1 Apr 26/10 <1 <1 <1 <1 <1 <1 <1 May 3/10 <1 <1 <1 <1 <1 <1 <1 May 10/10 <1 <1 <1 <1 <1 <1 <1 May 17/10 <1 <1 <1 <1 <1 <1 <1 May 24/10 No Samples May 31/10 <1 <1 <1 <1 <1 <1 <1 Jun 7/10 <1 <1 <1 <1 <1 <1 <1 Jun 14/10 <1 <1 <1 <1 <1 <1 <1 Jun 21/10 <1 <1 <1 <1 <1 <1 <1 Jun 28/10 <1 <1 <1 <1 <1 <1 <1 July 5/10 <1 <1 <1 <1 <1 <1 <1 July 12/10 <1 <1 <1 <1 <1 <1 <1 July 19/10 <1 <1 <1 <1 <1 <1 <1 July 26/10 <1 <1 <1 <1 <1 <1 <1 Aug 2/10 No Samples Aug 9/10 <1 <1 <1 <1 <1 <1 T-1 E<1 Aug 16/10 <1 <1 <1 <1 <1 <1 <1 Aug 23/10 <1 <1 <1 <1 Overgrown Overgrown <1 Aug 25/10 <1 <1 Aug 30/10 <1 <1 <1 <1 <1 <1 <1 Sep 6/10 No Samples Sep 13/10 <1 <1 <1 <1 <1 <1 <1

9 9 Sep 20/10 <1 <1 <1 <1 <1 <1 <1 Sep 27/10 <1 <1 <1 <1 <1 <1 <1 Oct 4/10 <1 <1 <1 <1 <1 <1 <1 Oct11/10 No Samples Oct 18/10 <1 <1 <1 <1 <1 <1 <1 Oct 25/10 <1 <1 <1 <1 <1 T-1 E<1 <1 Nov 1/10 <1 <1 <1 <1 <1 <1 <1 Nov 8/10 No Samples Nov 15/10 <1 <1 <1 <1 <1 <1 <1 Nov 22/10 <1 <1 <1 <1 <1 <1 <1 Nov 29/10 <1 <1 <1 <1 <1 <1 <1 Dec 6/10 <1 <1 <1 <1 <1 <1 <1 Dec 13/10 <1 <1 <1 <1 <1 <1 <1 Dec 20/10 <1 <1 <1 <1 <1 <1 < Turbidity Analysis (NTU) DATE WELL#2 WELL#3 WELL#4 WELL#5 WELL#6 Jan 11/ Jan 19/ Jan 26/ Feb 2/ Feb 9/ Feb 16/ Feb 23/ Mar 2/ Mar 9/ Mar 30/ Apr 13/ Apr 20/ May 4/ May 11/ May 18/ June 1/ June 22/ July 6/ July 13/ July 20/ July 27/ Aug 10/ Aug 24/ Aug 31/ Sept 14/ Sept 21/ Sept 27/ Oct 4/ Oct 18/ Nov 1/ Nov 15/ Nov 23/

10 10 Nov 30/ Dec 7/ Dec 15/ Dec 21/ Well # Highest Lowest Average ntu 0.06 ntu 0.08ntu ntu 0.05 ntu 0.07 ntu ntu 0.06 ntu 0.07 ntu ntu 0.06 ntu 0.08ntu ntu 0.07ntu 0.08 ntu 13.0 Summary The Town of Golden has worked with local Health Officials since 2002 to develop a water quality monitoring program that exceeds the Drinking Water Regulation. The Town will continue with this monitoring program as part of the commitment to deliver a safe potable water supply to consumers. This report will be posted on the Town of Golden s website for public information after it has been received by Council for information. Lorne Pickering, Systems Operator Al Taylor, Systems Operator Chris Cochran, AScT, Manager of Operations

11 11 DW Sub Maxxam Analytical Well #2 GCDWQ Year RDL Units MAC mg/l Fluoride (F) mg/l 1.5 ANIONS Nitrite (N) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l 1 Calculated Parameters Total Hardness (CaCO3) mg/l OG500 Nitrate (N) mg/l 10 Alkalinity (Total as CaCO3) mg/l Alkalinity (PP as CaCO3) <0.5 <0.5 <0.5 < mg/l Bicarbonate (HCO3) mg/l Carbonate (CO3) <0.5 <0.5 <0.5 < mg/l Hydroxide (OH) <0.5 <0.5 <0.5 < mg/l Anions Dissolved Sulphate (SO4) mg/l OG500 Dissolved Chloride (Cl) mg/l OG250 MISCELLANEOUS True Colour <5 <5 <5 <5 <5 <5 5 Col. Unit OG15 TCU Nutrients Nitrate plus Nitrite (N) mg/l Conductivity us/cm ph ph Units OG Total Dissolved Solids mg/l OG<500 Turbidity <0.1 <0.1 < NTU 1 Total Metals by ICPMS Total Aluminum (Al) <0.02 < < mg/l OG0.1 Total Antimony (Sb) <0.001 < < < < < mg/l Total Arsenic (As) <0.001 < < < < < mg/l 0.01 Total Barium (Ba) mg/l 1 Total Boron (B) <0.008 <0.008 <0.005 <0.05 <0.05 < mg/l 5 Total Cadmium (Cd) < < < < < < mg/l Total Chromium (Cr) <0.005 <0.005 <0.001 <0.001 <0.001 < mg/l 0.05 Total Cobalt (Co) <0.005 <0.005 < < < < mg/l Total Copper (Cu) <0.005 < mg/l OG <1.0 Total Iron (Fe) < <0.005 <0.005 < mg/l OG <0.3 Total Lead (Pb) < < < < mg/l 0.01 Total Manganese (Mn) <0.001 <0.01 <0.001 <0.001 <0.001 < mg/l OG<0.05 Total Mercury (Hg) < < < < < < mg/l Total Molybdenum (Mo) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l Total Nickel (Ni) <0.008 < <0.001 <0.001 < mg/l Total Selenium (Se) <0.001 < < < < < mg/l 0.01 Total Silver (Ag) <0.01 <0.01 < < < < mg/l Total Uranium (U) mg/l 0.02 Total Vanadium (V) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l Total Zinc (Zn) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l OG<5.0 Total Calcium (Ca) mg/l Total Magnesium (Mg) mg/l Total Potassium (K) <1 < mg/l Total Sodium (Na) mg/l OG<200 Total Sulphur (S) mg/l

12 12 Well #3 GCDWQ Year RDL Units MAC mg/l Fluoride (F) mg/l 1.5 ANIONS Nitrite (N) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l 1 Calculated Parameters Total Hardness (CaCO3) mg/l OG500 Nitrate (N) mg/l 10 Alkalinity (Total as CaCO3) mg/l Alkalinity (PP as CaCO3) <0.5 <0.5 <0.5 < mg/l Bicarbonate (HCO3) mg/l Carbonate (CO3) <0.5 <0.5 <0.5 < mg/l Hydroxide (OH) <0.5 <0.5 <0.5 < mg/l Anions Dissolved Sulphate (SO4) mg/l OG500 Dissolved Chloride (Cl) mg/l OG250 MISCELLANEOUS True Colour <5 <5 <5 <5 <5 <5 5 Col. Unit OG15 TCU Nutrients Nitrate plus Nitrite (N) mg/l Conductivity us/cm ph ph Units OG Total Dissolved Solids mg/l OG<500 Turbidity 0.2 <0.1 < NTU 1 Total Metals by ICPMS Total Aluminum (Al) <0.02 < < mg/l OG0.1 Total Antimony (Sb) <0.001 < < < < < mg/l Total Arsenic (As) <0.001 < < < < < mg/l 0.01 Total Barium (Ba) mg/l 1 Total Boron (B) <0.008 < <0.05 <0.05 < mg/l 5 Total Cadmium (Cd) < < < < < < mg/l Total Chromium (Cr) <0.005 <0.005 <0.001 <0.001 <0.001 < mg/l 0.05 Total Cobalt (Co) <0.005 <0.005 < < < < mg/l Total Copper (Cu) <0.005 < mg/l OG <1.0 Total Iron (Fe) <0.005 <0.005 <0.005 <0.005 < mg/l OG <0.3 Total Lead (Pb) < < < < mg/l 0.01 Total Manganese (Mn) <0.001 <0.001 <0.001 <0.001 <0.001 < mg/l OG<0.05 Total Mercury (Hg) < < < < < < mg/l Total Molybdenum (Mo) <0.005 <0.005 <0.001 <0.001 <0.001 < mg/l Total Nickel (Ni) <0.008 <0.008 <0.001 <0.001 <0.001 < mg/l Total Selenium (Se) <0.001 <0.005 < < < < mg/l 0.01 Total Silver (Ag) <0.01 <0.01 < < < < mg/l Total Uranium (U) mg/l 0.02 Total Vanadium (V) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l Total Zinc (Zn) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l OG<5.0 Total Calcium (Ca) mg/l Total Magnesium (Mg) mg/l Total Potassium (K) <1 < mg/l Total Sodium (Na) mg/l OG<200 Total Sulphur (S) mg/l

13 13 Well #4 GCDWQ Year RDL Units MAC mg/l Fluoride (F) mg/l 1.5 ANIONS Nitrite (N) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l 1 Calculated Parameters Total Hardness (CaCO3) mg/l OG500 Nitrate (N) mg/l 10 Alkalinity (Total as CaCO3) mg/l Alkalinity (PP as CaCO3) <0.5 <0.5 <0.5 < mg/l Bicarbonate (HCO3) mg/l Carbonate (CO3) <0.5 <0.5 <0.5 < mg/l Hydroxide (OH) <0.5 <0.5 <0.5 < mg/l Anions Dissolved Sulphate (SO4) mg/l OG500 Dissolved Chloride (Cl) mg/l OG250 MISCELLANEOUS True Colour <5 <5 <5 <5 5 <5 5 Col. Unit OG15 TCU Nutrients Nitrate plus Nitrite (N) mg/l Conductivity us/cm ph ph Units OG Total Dissolved Solids mg/l OG<500 Turbidity <0.1 < NTU 1 Total Metals by ICPMS Total Aluminum (Al) <0.02 < < < mg/l OG0.1 Total Antimony (Sb) <0.001 < < < < < mg/l Total Arsenic (As) <0.001 < < < < < mg/l 0.01 Total Barium (Ba) mg/l 1 Total Boron (B) 0.01 < <0.05 <0.05 < mg/l 5 Total Cadmium (Cd) < < < < < < mg/l Total Chromium (Cr) <0.005 <0.005 <0.001 <0.001 <0.001 < mg/l 0.05 Total Cobalt (Co) <0.005 <0.005 < < < < mg/l Total Copper (Cu) <0.005 < mg/l OG <1.0 Total Iron (Fe) <0.005 <0.005 <0.005 <0.005 < mg/l OG <0.3 Total Lead (Pb) < < < < mg/l 0.01 Total Manganese (Mn) <0.001 <0.001 <0.001 <0.001 <0.001 < mg/l OG<0.05 Total Mercury (Hg) < < < < < < mg/l Total Molybdenum (Mo) <0.005 <0.005 <0.001 <0.001 <0.001 < mg/l Total Nickel (Ni) <0.008 <0.008 <0.001 <0.001 <0.001 < mg/l Total Selenium (Se) <0.001 < < < < < mg/l 0.01 Total Silver (Ag) <0.01 <0.01 < < < < mg/l Total Uranium (U) mg/l 0.02 Total Vanadium (V) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l Total Zinc (Zn) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l OG<5.0 Total Calcium (Ca) mg/l Total Magnesium (Mg) mg/l Total Potassium (K) mg/l Total Sodium (Na) mg/l OG<200 Total Sulphur (S) mg/l

14 14 Well #5 GCDWQ Year RDL Units MAC mg/l Fluoride (F) mg/l 1.5 ANIONS Nitrite (N) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l 1 Calculated Parameters Total Hardness (CaCO3) mg/l OG500 Nitrate (N) mg/l 10 Alkalinity (Total as CaCO3) mg/l Alkalinity (PP as CaCO3) <0.5 <0.5 <0.5 < mg/l Bicarbonate (HCO3) mg/l Carbonate (CO3) <0.5 <0.5 <0.5 < mg/l Hydroxide (OH) <0.5 <0.5 <0.5 < mg/l Anions Dissolved Sulphate (SO4) mg/l OG500 Dissolved Chloride (Cl) mg/l OG250 MISCELLANEOUS True Colour <5 <5 <5 <5 <5 <5 5 Col. Unit OG15 TCU Nutrients Nitrate plus Nitrite (N) mg/l Conductivity us/cm ph ph Units OG Total Dissolved Solids mg/l OG<500 Turbidity 0.2 < < NTU 1 Total Metals by ICPMS Total Aluminum (Al) <0.02 < < < mg/l OG0.1 Total Antimony (Sb) <0.001 < < < < < mg/l Total Arsenic (As) <0.001 < < < < < mg/l 0.01 Total Barium (Ba) mg/l 1 Total Boron (B) <0.008 <0.008L <0.05 <0.05 < mg/l 5 Total Cadmium (Cd) < < < < < < mg/l Total Chromium (Cr) <0.005 <0.005 <0.001 <0.001 <0.001 < mg/l 0.05 Total Cobalt (Co) <0.005 <0.005 < < < < mg/l Total Copper (Cu) <0.005 < mg/l OG <1.0 Total Iron (Fe) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l OG <0.3 Total Lead (Pb) < < < < < mg/l 0.01 Total Manganese (Mn) <0.001 <0.001 <0.001 <0.001 <0.001 < mg/l OG<0.05 Total Mercury (Hg) < < < < < < mg/l Total Molybdenum (Mo) <0.005 <0.005 <0.001 <0.001 <0.001 < mg/l Total Nickel (Ni) <0.008 <0.008 <0.001 <0.001 <0.001 < mg/l Total Selenium (Se) <0.001 < < < < < mg/l 0.01 Total Silver (Ag) <0.01 <0.01 < < < < mg/l Total Uranium (U) mg/l 0.02 Total Vanadium (V) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l Total Zinc (Zn) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l OG<5.0 Total Calcium (Ca) mg/l Total Magnesium (Mg) mg/l Total Potassium (K) mg/l Total Sodium (Na) mg/l OG<200 Total Sulphur (S) mg/l

15 15 Well #6 GCDWQ Year RDL Units MAC mg/l Fluoride (F) mg/l 1.5 ANIONS Nitrite (N) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l 1 Calculated Parameters Total Hardness (CaCO3) mg/l OG500 Nitrate (N) mg/l 10 Alkalinity (Total as CaCO3) mg/l Alkalinity (PP as CaCO3) <0.5 <0.5 <0.5 < mg/l Bicarbonate (HCO3) mg/l Carbonate (CO3) <0.5 <0.5 <0.5 < mg/l Hydroxide (OH) <0.5 <0.5 <0.5 < mg/l Anions Dissolved Sulphate (SO4) mg/l OG500 Dissolved Chloride (Cl) mg/l OG250 MISCELLANEOUS True Colour <5 <5 <5 <5 <5 <5 5 Col. Unit OG15 TCU Nutrients Nitrate plus Nitrite (N) mg/l Conductivity us/cm ph ph Units OG Total Dissolved Solids mg/l OG<500 Turbidity 0.2 < NTU 1 Total Metals by ICPMS Total Aluminum (Al) <0.02 < < < mg/l OG0.1 Total Antimony (Sb) <0.001 < < < < < mg/l Total Arsenic (As) <0.001 < < < < mg/l 0.01 Total Barium (Ba) mg/l 1 Total Boron (B) < < < < < < mg/l 5 Total Cadmium (Cd) < < < < < mg/l Total Chromium (Cr) <0.005 <0.005 <0.001 <0.001 <0.001 < mg/l 0.05 Total Cobalt (Co) <0.005 <0.005 < < < < mg/l Total Copper (Cu) <0.005 < mg/l OG <1.0 Total Iron (Fe) mg/l OG <0.3 Total Lead (Pb) < < < < < < mg/l 0.01 Total Manganese (Mn) <0.001 < mg/l OG<0.05 Total Mercury (Hg) < < < < < < mg/l Total Molybdenum (Mo) <0.005 <0.005 <0.001 <0.001 <0.001 < mg/l Total Nickel (Ni) <0.008 < <0.001 <0.001 < mg/l Total Selenium (Se) <0.001 < < < < < mg/l 0.01 Total Silver (Ag) <0.01 <0.01 < < < < mg/l Total Uranium (U) mg/l 0.02 Total Vanadium (V) <0.005 <0.005 <0.005 <0.005 <0.005 < mg/l Total Zinc (Zn) <0.005 < <0.005 <0.005 < mg/l OG<5.0 Total Calcium (Ca) mg/l Total Magnesium (Mg) mg/l Total Potassium (K) <1 < mg/l Total Sodium (Na) mg/l OG<200 Total Sulphur (S) mg/l

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