Chino Basin Recycled Water Groundwater Recharge Program Quarterly Monitoring Report October 1 through December 31, 2011

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2 Chino Basin Recycled Water Groundwater Recharge Program Quarterly Monitoring Report October 1 through December 31, 2011 Prepared by: February 15, 2012

3 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program October 1 through December 31, 2011 Order No. R Fourth Quarter of 2011 Table of Contents 1. Introduction... 1 A. Order No. R B. Order No. R C. Revised Monitoring & Reporting Program No. R D. Outline of the Quarterly Report Monitoring Results... 2 A. Recycled Water: RP-1 and RP B. Recycled Water: Basin and Lysimeter Samples... 3 C. Diluent Water... 4 D. Groundwater Monitoring Wells Recharge Operations Operational Problems & Preventive or Corrective Actions Certification of Non-Pumping in the Buffer Zones MVWD ASR Project... 5 i

4 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program October 1 through December 31, 2011 Order No. R Fourth Quarter of 2011 LIST OF TABLES 2-1a 2-1b 2-1c Recycled Water Monitoring: RP-1 & RP-4 Effluent Water Quality (Recycled Water Quality Specifications A.5, A.7, A.8, & A.9) Recycled Water Monitoring: Agency-Wide Flow-Weighted TIN & TDS (Recycled Water Quality Specifications A.6) Recycled Water Monitoring: Primary & Secondary Maximum Contaminant Levels (Recycled Water Quality Specifications A.1, A.2, A.3, & A.15) Recycled Water Monitoring: Remaining Priority Pollutants, EDCs & Pharmaceuticals, and Unregulated Chemicals (Monitoring & Reporting Program) 2-5a Lysimeter and Surface Water Monitoring: TOC, Nitrogen Species, and EC 2-5b Alternative Monitoring Plans 2-6a Diluent Water Monitoring: Stormwater 2-6b Diluent Water Monitoring: State Water Project Silverwood Lake 2-7 Summary of Wells in Groundwater Monitoring Networks 2-8a Groundwater Monitoring Well Results (Quarterly) 2-8b Groundwater Monitoring Well Results (Annual) 3-1 Diluent & Recycled Water Recharge Volumes 6-1 MVWD ASR Project - TIN/TDS Mass Balance LIST OF FIGURES 1-1 Basin Locations 2-1 Monitoring Well Network: Hickory and Banana Basins 2-2 Monitoring Well Network: Turner Basins 2-3 Monitoring Well Network: 7th & 8th Street Basins 2-4 Monitoring Well Network: Ely Basin 2-5 Monitoring Well Network: Brooks Basin 2-6 Monitoring Well Network: RP3 Basins 2-7 Monitoring Well Network: San Sevaine & Victoria Basins ii

5 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program October 1 through December 31, 2011 Order No. R Fourth Quarter of Introduction Inland Empire Utilities Agency (IEUA), Chino Basin Watermaster (Watermaster), Chino Basin Water Conservation District, and San Bernardino Flood Control District are partners in the implementation of the Chino Basin Recycled Water Groundwater Recharge Program. This is part of a comprehensive water supply program to enhance water supply reliability and improve the groundwater quality in local drinking water wells throughout the Chino Groundwater Basin by increasing the recharge of stormwater, imported water and recycled water. This program is an integral part of Watermaster s Optimum Basin Management Plan (OBMP). A. Order No. R On June 29, 2007, the Santa Ana Regional Water Quality Control Board (Regional Board) adopted Order No. R (Order) which prescribes the requirements for recycled water use for groundwater recharge in 13 recharge sites within the Chino North Management Zone. Chino Basin Groundwater Recharge Program Basins are presented in Figure 1-1. As a provision of this Order, IEUA and Watermaster must also comply with Monitoring and Reporting Program No. R (MRP). The MRP includes the water quality monitoring requirements of the Chino Basin Recycled Water Groundwater Recharge Program and the requirement for the submittal of quarterly and annual reports. This document is the quarterly report for the fourth quarter of 2011 (4Q11). The quarterly report includes the following elements as prescribed in the MRP: Monitoring results for recycled water (including lysimeter monitoring), diluent water, and groundwater. Recycled water and diluent water volumes recharged at each basin. Reporting of any non-compliance events due to water quality, including records of any operational problems, plant upset and equipment breakdowns or malfunctions, and any diversion(s) of offspecification recycled water and the location(s) of final disposal. All corrective or preventive action(s) taken. Certification that no groundwater has been pumped from the buffer zone that extends 500 feet and 6-months underground travel time from the recharge basin(s) where recycled water is applied for domestic water supply use. B. Order No. R On October 23, 2009, the Regional Board adopted Order No. R , which amended the recharge permit (Order No. R ) by extending the previously 60-month averaging period to 120 months for determining a recharge site s recycled water contribution (RWC). The Order No. R also allowed a fraction of the groundwater underflow of the Chino Basin aquifers to be used as a source of diluent water when calculating the running average RWC. C. Revised Monitoring & Reporting Program No. R On October 27, 2010, the Regional Board revised Monitoring and Reporting Program No. R (MRP) based on requests for modifications from IEUA and approved by the CDPH. The following changes were made to the MRP: 1) Sampling Requirements A.3, A.4, and A.5 were modified by specifying that samples shall be collected on a representative day instead of the 10 th day. Page 1

6 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program October 1 through December 31, 2011 Order No. R Fourth Quarter of ) Groundwater Monitoring Program Requirement V.1. was modified by adding a sentence to the paragraph that allows IEUA to analyze the groundwater samples collected on a quarterly basis from non-active municipal drinking water wells for dissolved metals, instead of total recoverable metals. 3) Reporting Requirement VI.B.3.b. has been modified and footnote No. 18 has been added to reflect that IEUA uses groundwater monitoring information contained in the State of the Basin report prepared on a biennial basis by the Chino Basin Watermaster, amongst other sources, for the annual determination of the recycled water groundwater flow path. D. Outline of the Quarterly Report Section 2 of this quarterly report discusses the water quality monitoring results for recycled water recharge (water recycling plant effluent, distribution system, basin surface water, and lysimeter data), diluent water, and groundwater. Section 3 provides an overview of recharge operations including the volume of diluent water and recycled water recharged. Section 4 describes any operational problems and preventive and/or corrective actions taken. Section 5 contains the certification of non-pumping in the 500-foot buffer zones around each basin. Section 6 is a brief overview of the Monte Vista Water District (MVWD) Aquifer Storage and Recovery (ASR) project. 2. Monitoring Results A. Recycled Water: RP-1 and RP-4 The requirements for recycled water monitoring are presented in the MRP. Tables 2-1 through 2-4 include all of the requisite 4Q11 data. Recycled Water Specifications A.5 through A.9 are the narrative limits established in the permit. Corresponding monitoring data are presented in Tables 2-1 and 2-2. Recycled water compliance for the total nitrogen (TN) limit of 5 mg/l is met at the lysimeters. In December 2011, two exceedances of TN occurred at the Hickory Basin East 25-foot depth lysimeter during two consecutive weeks of sampling. On December 30, 2011, the CDPH and the Regional Board were both given verbal notification regarding the two TN exceedances and the subsequent cessation of recycled water deliveries until the reason for the diminished effectiveness of Soil-Aquifer Treatment (SAT) for TN could be evaluated. SAT efficiency for TOC was not impacted. Upon investigation of the probable causes, it was deduced that colder weather and the recent basin cleaning activities during 3Q11 may have temporarily disrupted the nitrogen-reducing bacterial population in the Hickory Basin soils. This can results from the removal of the main carbon source in the soil, which lessens bacterial activity creating aerobic soil conditions less favorable to TN-reducing bacterial populations. The most viable solution for resuming recycled water recharge at Hickory basin was to allow naturally-occurring carbon sources to be carried back into the basin by local runoff and stormwater, which would also allow for dilution of a recycled water TN. During the current quarter (1Q12), rain has added stormwater to Hickory Basin and the SAT effectiveness for TN removal continues to be evaluated with periodic recycled water deliveries. In the Order, compliance for constituents with maximum contaminant levels (MCLs) and secondary MCLs are based on 4-quarter running averages. These constituents are listed in Recycled Water Specifications A.1 through A.3 (Tables I, II, and III in the Order). The 4-quarter running average concentration data for 1Q11 through 4Q11 are summarized in Table 2-3. The table includes the 4- quarter running average for each parameter and the corresponding limits for compliance. Of the Recycled Water Quality Specifications with limitations, only oil & grease does not require the 4-quarter running average for compliance determination. During 4Q11, there were no exceedances in the following categories: primary MCLs for inorganic chemicals, volatile organic compounds (VOCs), Page 2

7 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program October 1 through December 31, 2011 Order No. R Fourth Quarter of 2011 non-volatile synthetic organic chemicals (SOCs), radionuclides, and disinfection byproducts; action levels for lead and copper; secondary MCLs for required constituents; and oil and grease. Due to the volume of sample required for analyses, IEUA has selected, and CDPH has approved, a recycled water sampling point along the distribution pipeline. IEUA selected the turnout to GenOn Energy (formerly Reliant Energy) to be representative of the system blend of recycled water used for recharge. Although this sampling location is suitable for most constituents, it is not appropriate for disinfection byproducts (DBPs), more specifically, Total Trihalomethanes (TTHMs) and Total Haloacetic Acids (HAA5). Compliance samples for these DBPs are taken from lysimeters at basins actively receiving recycled water. At these locations, DBPs have been able to break down and samples better represent of the recycled water prior to reaching the groundwater table. Once a quarter, a single representative sample is collected from a selected compliance lysimeter and analyzed for DBPs. For the 4Q11 sampling for DBPs, IEUA chose the 15-foot below ground surface lysimeter at the Banana Basin as the compliance point. The Banana Basin lysimeter was selected as the 4Q11 compliance point because the basin received consistent recycled water recharge and recycled water was present at the 15- foot depth based on electrical conductivity (EC) measurements. For constituents with no specified limits, quarterly monitoring data are summarized in Table 2-4. B. Recycled Water: Basin and Lysimeter Samples Total organic carbon (TOC) and nitrogen species sampling and analysis are performed weekly during periods when recycled water is delivered to recharge sites. EC is also measured and reported to assist in identifying the presence of recycled water at various depths in the vadose zone. All basin and lysimeter water quality results from 4Q11 are summarized in Table 2-5a. The table includes lysimeter data for 7 th & 8 th Street, Banana, Brooks, Hickory, RP3, San Sevaine, and Victoria Basins. The Turner and Ely Basins have implemented alternative monitoring plans which include the sampling of recycled water at the GenOn Energy turnout and the application of TOC and TN correction factors for SAT at the basins. These correction factors were determined from each basin s start-up period findings. The correction factors reduce the TOC results by 70 percent for recycled water delivered to Turner cells 1 & 2, 85 percent for recycled water delivered to Turner cells 3 & 4, and 76 percent for recycled water delivered to Ely Basin. The correction factors reduce TN results by 87 percent for recycled water delivered to all four Turner cells and 52 percent for recycled water delivered to Ely Basin. Turner Basin TOC and TN values calculated based on the correction factors provided in the alternative monitoring plan are summarized in Table 2-5b. Ely Basin did not receive recycled water during 4Q11. The Brooks and RP3 Basins have implemented alternative monitoring plans based on start-up period findings. The Brooks Basin alternative monitoring plan includes monthly sampling of the Brooks Basin surface water, 25-foot lysimeter, and monitoring well BRK-1/1 for EC, TOC, and TN to be conducted as long as recycled water has been recharged in the prior 180 days. Additionally, chloride will be analyzed for BRK-1/1 and used to verify the presence of recycled water. The 25-foot lysimeter will be the compliance point for TN and the monitoring well will be the compliance point for TOC. The RP3 alternative monitoring plan includes monthly sampling of the 35-foot deep lysimeter for EC, TOC, and TN. The monitoring schedule would be conducted during the initial year of recycled water recharge at the RP3 Basin. If sufficient SAT is demonstrated in this initial year, the alternative monitoring plan proposes compliance monitoring from samples collected from the recycled water distribution pipeline and applying a performance-based TOC correction factor determined from past lysimeter monitoring. Brooks and RP3 Basins alternative monitoring data are summarized in Table 2-5b. Page 3

8 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program October 1 through December 31, 2011 Order No. R Fourth Quarter of 2011 C. Diluent Water For 4Q11, diluent water quality sampling of stormwater was conducted on November 7, 2011 at Declez and San Sevaine Basins and on December 12, 2011 at Victoria and Banana Basins. Table 2-6a lists the results of the stormwater sampling and analyses. Details on the methods used to measure daily diluent water flow and diluent water monitoring schedule can be found in the CDPH-approved Diluent Water Monitoring Plan. The quarterly sampling schedule for stormwater and local runoff is presented in Table 4-2 of the plan. Stormwater is sampled during the rainy season and local runoff is sampled during the dry season. Samples are collected at about half the locations during each seasonal quarter, alternating between even and odd years. Table 5-2 of the plan summarizes the sample type and reporting frequency for the parameters listed in Tables I, II, III, and IV of the Diluent Water Monitoring requirement III.3 of the MRP. State Water Project water was delivered as diluent water to the RP3 Basin during 4Q11. Table 2-6b lists the results from Metropolitan Water District s general mineral and physical analysis of source water from Silverwood Lake. D. Groundwater Monitoring Wells During 4Q11, groundwater quality within the vicinity of Banana and Hickory Basins was monitored by sampling a network of six wells. The groundwater quality within the vicinity of Turner Basin was monitored by sampling a network of five wells. The groundwater quality within the vicinity of the RP3 Basin was monitored by sampling a network of five wells. The groundwater quality within the vicinity of the 7 th & 8 th Street Basin was monitored by sampling a network of five wells. The groundwater quality within the vicinity of the Brooks Basin was monitored by sampling a network of six wells. The groundwater quality within the vicinity of the Ely Basin was monitored by sampling a network of four wells. The groundwater quality within the vicinity of the San Sevaine and Victoria Basins were monitored by sampling a network of five wells. The wells in the monitoring well networks for Hickory and Banana, Turner, 7 th & 8 th Street, Ely, Brooks, RP3, and San Sevaine & Victoria Basins are summarized in Table 2-7, and presented on Figures 2-1 through 2-7, respectively. The groundwater constituents analyzed from the monitoring wells during quarterly and annual monitoring are presented in Table 2-8a and Table 2-8b. Groundwater monitoring is conducted to evaluate water quality conditions in the vicinity of the recharge basins utilizing recycled water. Groundwater monitoring results can be used to assess background conditions, time the arrival of recharge waters, and the impact recharged water has on downgradient water supplies. Any 4Q11 analyses results which exceeded primary or secondary MCLs are shown in the tables in bold font. Of note are the analyses for the following wells and constituents: Turbidity exceeding the secondary MCL was observed in several monitoring wells, namely: BH-1/2, Ely Walnut well, BRK-2/1, VCT-1/1 and VCT-2/2. In subsequent quarters, additional well purging will be performed at the three other wells where turbidity levels continue to be elevated. However, additional purging may still not resolve turbidity issues. During 4Q11, manganese was above secondary standards at RP3 Basin s well, RP3-1/. TDS and EC are slightly higher than the secondary MCLs in the RP3 basin area wells (Alcoa MW3 and Southridge JHS) and the Ely Basin area well (Walnut). The wells south of Ely and near RP3 are located in an area with historically high EC levels (>1,000 μmhos/cm). Many of the monitoring wells in the 8th Street, Brooks, Ely, RP3, and Declez monitoring networks also have NO 3 -N concentrations above the primary MCL. These higher levels are characteristic of groundwater quality in the local area where historically the NO 3 -N concentrations ranges from mg/l. TDS and NO 3 -N concentrations in the area of the RP3 and Declez monitoring well network are documented in the CBWM 2008 State of the Basin report. Page 4

9 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program October 1 through December 31, 2011 Order No. R Fourth Quarter of Recharge Operations IEUA s Groundwater Recharge Coordinator recorded the daily volumes of water routed to all basins. The 7 th & 8 th Street, Banana, Ely, Hickory, RP3, San Sevaine, Turner, and Victoria Basins received recycled water this quarter. Table 3-1 lists the volumes of recycled water and diluent water (local runoff, stormwater, and/or imported water) captured during 4Q11 at the basins that have initiated recharge using recycled water. 4. Operational Problems & Preventive or Corrective Actions No operational problems were encountered this quarter, therefore no corrective actions were necessary for the following: Regional Water Recycling Facilities - RP-1 & RP-4. As previously discussed in Section 2 of this report, recycled water recharge operations at Hickory Basin were temporarily suspended in late December 2012 due to two consecutive TN results above 5 mg/l. 5. Certification of Non-Pumping in the Buffer Zones Watermaster has certified that there was no reported pumping of groundwater in 4Q11 for domestic or municipal use from the buffer zones that extend 500 feet and 6 months underground travel time from the 7 th & 8 th Street, Banana, Brooks, Ely, Hickory, RP3, San Sevaine, Turner, and Victoria Basins. In fact, there are no production wells within the buffer zones of these aforementioned recharge sites. IEUA continues to work with the San Bernardino Department of Environmental Health Services (SBCDEHS) to prevent the drilling and construction of new drinking water wells within the buffer zones. SBCDEHS has initiated control over production well permitting within the buffer zones of all recharge sites through the use of buffer zone maps that utilize the same land coordinate system (Township/Range/Section/40-acre Parcel) that is used in the permitting process. SBCDEHS reviews new well permit applications, in part, by checking the proposed location of a new drinking water well against recharge basin location maps and parcel lists, both provided by IEUA. The maps and lists show township/range/section parcels (40-acre parcels) that abut recharge basins and their 500-foot buffers. If a well falls within an abutting parcel, SBCDEHS will review the proposed well location using maps of the basins and buffer zones. If the well falls too near the buffer zone boundary for SBCDEHS to determine the relationship of the proposed well location to the buffer boundary, SBCDEHS will defer to IEUA for a prompt field review of the proposed well location. The field review may include contacting and having the well applicant to identify the exact location of the proposed well casing. To conduct a detailed field review, SBCDEHS will contact and provide IEUA Groundwater Recharge Coordinator with a copy of the well permit application and a timeline for the completion of IEUA s review. Following the review, IEUA will notify SBCDEHS of its findings in writing. IEUA will also notify the California Department of Public Health and the Regional Board of well permit applications that it recommends be declined due to well locations determined to fall with a 500-foot buffer zone. 6. MVWD ASR Project Reporting for the Monte Vista Water District (MVWD) Aquifer Storage and Recovery (ASR) project was allowed by the RWQCB to be included under IEUA/CBWM Phase I Groundwater Recharge Order No. R and subsequent permit updates. In April 2007, MVWD, Watermaster, and IEUA entered into an agreement to report the MVWD ASR project groundwater injection/recovery volumes and TIN/TDS mass balance in the recharge program quarterly reports. Initial injection began in June In May 2008, MVWD discontinued groundwater injection at the ASR wells for an extended period of time. In June 2011, MVWD groundwater injection activities resumed at four ASR wells. MVWD continued injection of imported water through September Table 6-1 summarizes the Page 5

10 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program October 1 through December 31, 2011 Order No. R Fourth Quarter of 2011 monthly volumes and TIN/TDS of injected and recovered water. The table also includes the mass balance of TIN/TDS from the injection-recovery cycles. Page 6

11 Turbidity 1,2,7 TOC NO 3 -N TN TIN 3 ph 7 EC 7 TDS 3 Hardness Coliform 1,2,4 Turbidity 1,2,7 TOC NO 3 -N TN TIN 3 ph 7 EC TDS 3 Hardness Coliform 1,2,4 Unit NTU mg/l mg/l mg/l mg/l unit µhmo/cm mg/l mg/l mpn/100ml NTU mg/l mg/l mg/l mg/l unit µhmo/cm mg/l mg/l mpn/100ml Limits 2;5; <pH<9 2.2;23;240 2;5; <pH<9 2.2;23;240 10/01/ < <2 10/02/ < <2 10/03/ < <2 10/04/ < <2 10/05/ < <2 10/06/ <2 10/07/ < <2 10/08/ < <2 10/09/ < <2 10/10/ < <2 10/11/ < <2 10/12/ < <2 10/13/ < <2 10/14/ < <2 10/15/ < <2 10/16/ < <2 10/17/ < <2 10/18/ < <2 10/19/ <2 10/20/ < <2 10/21/ < <2 10/22/ < <2 10/23/ < <2 10/24/ < <2 10/25/ < <2 10/26/ < <2 10/27/ < <2 10/28/ < <2 10/29/ < <2 10/30/ < <2 10/31/ < <2 Avg < <2 Min < <2 Max <2 Note: Table 2-1a Recycled Water Monitoring: RP-1 & RP-4 Effluent Water Quality for October 2011 (Recycled Water Quality Specifications A.5, A.7, A.8, & A.9) RP-1 Effluent Bolded characters signify an exceedance of a permit limitation Blank cells indicate that analysis was not run for a constituent on that particular date. The data presented meets/exceeds the frequency of analysis specified under the discharge permit for these facilities. 1 Turbidity and coliform must meet water quality standards for disinfected tertiary treated recycled water, as specified in NPDES No. CA , Order No. R Turbidity limits: 2 NTU average daily; 5 NTU no more than 5% of day; 10 NTU at any time. Coliform limits: 2.2 MPN/100mL 7-day median; 23 MPN/100mL in no more than 1 sample per month; 240 MPN/100mL at any time. 3 TDS and TIN limits are based on a 12-month running average values which are presented in Table Monthly average for coliform is based on "non-detect" values equal to 2. Determination of "less than" is dependent on the number of "non-detect" occurrences more than half the days in the month. 5 TOC shall not exceed 16 mg/l for more than two consecutive samples and an average of the last 4 sample results. 6 TN compliance can be met at a point prior to the regional groundwater, including lysimeters. 7 These values based on continuous monitoring data generated by the Supervisory Control and Data Acquisition (SCADA) system. RP-4 Effluent Page 1 of 3

12 Table 2-1b Recycled Water Monitoring: RP-1 & RP-4 Effluent Water Quality for November 2011 (Recycled Water Quality Specifications A.5, A.7, A.8, & A.9) RP-1 Effluent RP-4 Effluent Turbidity 1,2,7 TOC NO 3 -N TN TIN 3 ph 7 EC 7 TDS 3 Hardness Coliform 1,2,4 Turbidity 1,2,7 TOC NO 3 -N TN TIN 3 ph 7 EC TDS 3 Hardness Coliform 1,2,4 Unit NTU mg/l mg/l mg/l mg/l unit µhmo/cm mg/l mg/l mpn/100ml NTU mg/l mg/l mg/l mg/l unit µhmo/cm mg/l mg/l mpn/100ml Limits 2;5; <pH<9 2.2;23;240 2;5; <pH<9 2.2;23;240 11/01/ < <2 11/02/ < <2 11/03/ < <2 11/04/ < <2 11/05/ < <2 11/06/ < <2 11/07/ < <2 11/08/ < <2 11/09/ < <2 11/10/ < <2 11/11/ < <2 11/12/ < <2 11/13/ < <2 11/14/ < <2 11/15/ < <2 11/16/ <2 11/17/ < <2 11/18/ < <2 11/19/ < <2 11/20/ < <2 11/21/ <2 11/22/ <2 11/23/ < <2 11/24/ < <2 11/25/ < <2 11/26/ < <2 11/27/ < <2 11/28/ <2 11/29/ < <2 11/30/ <2 Avg < <2 Min < <2 Max <2 Note: Bolded characters signify an exceedance of a permit limitation Blank cells indicate that analysis was not run for a constituent on that particular date. The data presented meets/exceeds the frequency of analysis specified under the discharge permit for these facilities. 1 Turbidity and coliform must meet water quality standards for disinfected tertiary treated recycled water, as specified in NPDES No. CA , Order No. R Turbidity limits: 2 NTU average daily; 5 NTU no more than 5% of day; 10 NTU at any time. Coliform limits: 2.2 MPN/100mL 7-day median; 23 MPN/100mL in no more than 1 sample per month; 240 MPN/100mL at any time. 3 TDS and TIN limits are based on a 12-month running average values which are presented in Table Monthly average for coliform is based on "non-detect" values equal to 2. Determination of "less than" is dependent on the number of "non-detect" occurrences more than half the days in the month. 5 TOC shall not exceed 16 mg/l for more than two consecutive samples and an average of the last 4 sample results. TOC compliance can be met at a point prior to the regional groundwater, including lysimeters. 6 TN compliance can be met at a point prior to the regional groundwater, including lysimeters. 7 These values based on continuous monitoring data generated by the Supervisory Control and Data Acquisition (SCADA) system. Page 2 of 3

13 Turbidity 1,2,7 TOC NO 3 -N TN TIN 3 ph 7 EC 7 TDS 3 Hardness Coliform 1,2,4 Turbidity 1,2,7 TOC NO 3 -N TN TIN 3 ph 7 EC TDS 3 Hardness Coliform 1,2,4 Unit NTU mg/l mg/l mg/l mg/l unit µhmo/cm mg/l mg/l mpn/100ml NTU mg/l mg/l mg/l mg/l unit µhmo/cm mg/l mg/l mpn/100ml Limits 2;5; <pH<9 2.2;23;240 2;5; <pH<9 2.2;23;240 12/01/ < <2 12/02/ < <2 12/03/ < <2 12/04/ <2 12/05/ < <2 12/06/ <2 12/07/ <2 12/08/ < <2 12/09/ < <2 12/10/ < <2 12/11/ < <2 12/12/ < <2 12/13/ < <2 12/14/ <2 12/15/ < <2 12/16/ < <2 12/17/ < <2 12/18/ < <2 12/19/ <2 12/20/ <2 12/21/ <2 12/22/ < <2 12/23/ < <2 12/24/ < <2 12/25/ < <2 12/26/ < <2 12/27/ < <2 12/28/ < <2 12/29/ < <2 12/30/ < <2 12/31/ < <2 Avg < <2 Min < <2 Max <2 Note: Bolded characters signify an exceedance of a permit limitation Blank cells indicate that analysis was not run for a constituent on that particular date. The data presented meets/exceeds the frequency of analysis specified under the discharge permit for these facilities. 1 Turbidity and coliform must meet water quality standards for disinfected tertiary treated recycled water, as specified in NPDES No. CA , Order No. R Turbidity limits: 2 NTU average daily; 5 NTU no more than 5% of day; 10 NTU at any time. Coliform limits: 2.2 MPN/100mL 7-day median; 23 MPN/100mL in no more than 1 sample per month; 240 MPN/100mL at any time. 3 TDS and TIN limits are based on a 12-month running average values which are presented in Table Monthly average for coliform is based on "non-detect" values equal to 2. Determination of "less than" is dependent on the number of "non-detect" occurrences more than half the days in the month. 5 TOC shall not exceed 16 mg/l for more than two consecutive samples and an average of the last 4 sample results. TOC compliance can be met at a point prior to the regional groundwater, including lysimeters. 6 TN compliance can be met at a point prior to the regional groundwater, including lysimeters. Table 2-1c Recycled Water Monitoring: RP-1 & RP-4 Effluent Water Quality for December 2011 (Recycled Water Quality Specifications A.5, A.7, A.8, & A.9) RP-1 Effluent 7 These values based on continuous monitoring data generated by the Supervisory Control and Data Acquisition (SCADA) system. RP-4 Effluent Page 3 of 3

14 Table 2-2 Recycled Water Monitoring: Agency-Wide Flow-Weighted TIN & TDS (mg/l) (Recycled Water Quality Specifications A.6) TIN TDS Date Monthly 12-Mo. Run Avg. Monthly 12-Mo. Run Avg. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Min Max Limit Date source: IEUA NPDES monthly self-monitoring report (MRP No. R ) The data reported above will supersede any information submitted for previous quarters. Agency-wide TIN & TDS were in compliance with permit limits at all times. Page 1 of 1

15 Table 2-3 Recycled Water Monitoring: Primary & Secondary Maximum Contaminant Levels (Recycled Water Quality Specifications A.1, A.2, A.3, & A.15) Constituent 1Q11 2Q11 3Q11 4Q11 Inorganic Chemicals 4Q Run. Avg. 1 Limit Unit Method Aluminum <25 35 <25 27 < µg/l EPA Antimony <1 <1 <1 <1 <1 6 µg/l EPA Arsenic <2 <2 <2 <2 <2 10 µg/l EPA Asbestos <3.6 <2 <2 <0.8 <3.6 7 MFL EPA Barium µg/l EPA Beryllium <0.5 <0.5 <0.5 <0.5 <0.5 4 µg/l EPA Cadmium <0.25 <0.25 <0.25 <0.25 < µg/l EPA Chromium µg/l EPA Cyanide <5 <5 <5 <5 <5 150 µg/l SM 4500-CN E Fluoride mg/l SM 4500-F C Mercury <0.05 <0.05 <0.05 <0.05 < µg/l EPA Nickel µg/l EPA Perchlorate <4 <4 <4 <4 <4 6 µg/l EPA 314 Selenium <2 <2 <2 <2 <2 50 µg/l EPA Thallium <1 <1 <1 <1 <1 2 µg/l EPA Volatile Organic Chemicals (VOCs) Benzene <0.5 <0.5 <0.5 <0.5 <0.5 1 µg/l EPA Carbon Tetrachloride <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,2-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,4-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,1-Dichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,2-Dichloroethane <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,1-Dichloroethylene <1 <1 <1 <0.5 <1 6 µg/l EPA cis-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 6 µg/l EPA trans-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 < µg/l EPA Dichloromethane <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,2-Dichloropropane <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,3-Dichloropropene <0.5 <0.5 <0.5 <0.5 < µg/l EPA Ethylbenzene <0.5 <0.5 <0.5 <0.5 < µg/l EPA Monochlorobenzene <0.5 <0.5 <0.5 <0.5 < µg/l EPA Methyl-tert-butyl ether <0.5 <0.5 <0.5 <0.5 < µg/l EPA Styrene <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,1,2,2-Tetrachloroethane <0.5 <0.5 <0.5 <0.5 <0.5 1 µg/l EPA Tetrachloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Toluene <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,2,4-Trichlorobenzene <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,1,1-Trichloroethane <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,1,2-Trichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Trichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Trichlorofluoromethane <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,1,2-Trichloro-1,2,2-Trifluoroethane <0.5 <0.5 <0.5 <0.5 < µg/l EPA Vinyl Chloride <0.5 <0.5 <0.5 <0.5 < µg/l EPA m,p-xylene <0.5 <0.5 <0.5 <0.5 <0.5 µg/l EPA o-xylene <0.5 <0.5 <0.5 <0.5 <0.5 µg/l EPA Non-Volatile Synthetic Organic Chemicals (SOCs) Alachlor (Alanex) <0.1 <0.1 <0.1 <0.1 <0.1 2 µg/l EPA 505 Atrazine <0.05 <0.05 <0.05 <0.05 < µg/l EPA Bentazon <0.5 <0.5 <0.5 <0.5 < µg/l EPA Benzo(a)pyrene <0.02 <0.02 <0.02 <0.02 < µg/l EPA Carbofuran <0.5 <0.5 <0.5 <0.5 < µg/l EPA Chlordane <0.1 <0.1 <0.1 <0.1 < µg/l EPA 505 2,4-D <0.1 <0.1 <0.1 <0.1 < µg/l EPA Dalapon <1 <1 <1 < µg/l EPA Dibromochloropropane <0.01 <0.01 <0.01 <0.01 < µg/l EPA Di(2-ethylhexyl)adipate <0.6 <0.6 <0.6 <0.6 < µg/l EPA Di(2-ethylhexyl)phthalate <0.6 <0.6 <0.6 <0.6 <0.6 4 µg/l EPA Dinoseb <0.2 <0.2 <0.2 <0.2 <0.2 7 µg/l EPA Diquat <0.4 <0.4 <0.4 <0.4 < µg/l EPA Endothall <5 <5 <5 <5 <5 100 µg/l EPA Endrin <0.01 <0.01 <0.01 <0.01 < µg/l EPA 505 Page 1 of 2

16 Table 2-3 Recycled Water Monitoring: Primary & Secondary Maximum Contaminant Levels (Recycled Water Quality Specifications A.1, A.2, A.3, & A.15) Constituent 1Q11 2Q11 3Q11 4Q11 4Q Run. Avg. 1 Limit Unit Method Ethylene Dibromide <0.01 <0.01 <0.01 <0.01 < µg/l EPA Glyphosate <6 <25 <25 <6 < µg/l EPA 547 Heptachlor <0.01 <0.01 <0.01 <0.01 < µg/l EPA 505 Heptachlor Epoxide <0.01 <0.01 <0.01 <0.01 < µg/l EPA 505 Hexachlorobenzene <0.05 <0.05 <0.05 <0.05 < µg/l EPA Hexachlorocyclopentadiene <0.05 <0.05 <0.05 <0.05 < µg/l EPA Lindane <0.01 <0.01 <0.01 <0.01 < µg/l EPA 505 Methoxychlor <0.05 <0.05 <0.05 <0.05 < µg/l EPA 505 Molinate <0.1 <0.1 <0.1 <0.1 < µg/l EPA Oxamyl <0.5 <0.5 <0.5 <0.5 < µg/l EPA Pentachlorophenol <0.04 <0.04 <0.04 <0.04 < µg/l EPA Picloram <0.1 <0.1 <0.1 <0.1 < µg/l EPA PCB 1016 <0.08 <0.08 <0.08 <0.08 < µg/l EPA 505 PCB 1221 <0.1 <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1232 <0.1 <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1242 <0.1 <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1248 <0.1 <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1254 <0.1 <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1260 <0.1 <0.1 <0.1 <0.1 < µg/l EPA 505 Simazine <0.05 <0.05 <0.05 <0.05 < µg/l EPA Thiobencarb <0.2 <0.2 <0.2 <0.2 < µg/l EPA Toxaphene <0.5 <0.5 <0.5 <0.5 <0.5 3 µg/l EPA 505 2,3,7,8-TCDD (Dioxin) <5 <5 <5 <5 <5 30 pg/l EPA ,4,5-TP (Silvex) <0.2 <0.2 <0.2 <0.2 < µg/l EPA Action Level Chemicals Copper µg/l EPA Lead <0.5 <0.5 <0.5 <0.5 < µg/l EPA Radionuclides Combined Radium-226 and Radium 228 <0.43 <0.48 <0.41 <0.38 < pci/l EPA Gross Alpha Particle Activity <3 <2.4 <3 <3 <3 15 pci/l EPA 900.0/SM7110C Tritium <201 <386 <236 <228 <386 20,000 pci/l EPA 906 Strontium-90 <0.75 <0.79 <0.49 <0.62 < pci/l EPA 905 Gross Beta Particle Activity pci/l EPA Uranium <0.7 <0.7 <0.7 <0.7 < pci/l EPA Secondary Maximum Contaminant Level Chemicals Aluminum <25 35 <25 27 < µg/l EPA Copper µg/l EPA Corrosivity (Non-Cor.) -0.4 (Non-Cor.) -0.2 (Non-Cor.) -0.4 (Non-Cor.) Non-Cor. Non-Cor. SI SM 2330B Foaming Agents (MBAS) < mg/l S5540C/EPA Iron 3 NR NR NR µg/l EPA Manganese µg/l EPA Methyl-tert-butyl ether (MTBE) 3 <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Odor--Threshold TON SM 2150B Silver <0.25 <0.25 <0.25 <0.25 < µg/l EPA Thiobencarb <0.2 <0.2 <0.2 <0.2 <0.2 1 µg/l EPA Zinc µg/l EPA Miscellaneous Regulated Constituents Oil & Grease 4 <1 <1 <1 <1 <1 1 mg/l EPA 1664 Disinfection Byproducts Bromate <5 <5 <5 <5 <5 10 µg/l EPA Chlorite <0.01 <0.01 <0.01 <0.01 < mg/l EPA Lysimeter Compliance Point Data RP3-35 VCT-30 BNA-15 BNA-15 Total Trihalomethanes (TTHMs) 2 < µg/l EPA 524.2/624 Total Haloacetic Acids (HAA5) <2 <2 <2 <2 <2 60 µg/l S6251B NR: Not required this quarter 1 4-quarter running average is calculated based on ND values equal to half the detection limit. The reported 4-quarter running average value, if less then DL, will be based on highest DL found in the data set. 2 The sum of m,p-xylene and o-xylene is used to calculate compliance for the Total Xylenes limit 3 4-quarter running average is calculated based on the four most recent results. Monitoring is required annually. However, if monitoring takes place more frequently than required, those results will be reported. 4 Oil & Grease compliance determination not based on 4-quarter running average Bold signifies an exceedance of a limit in the Order. Explained in further detail in the report text. Page 2 of 2

17 Table 2-4 Recycled Water Monitoring: Remaining Priority Pollutants, EDCs & Pharmaceuticals, and Unregulated Chemicals (Monitoring & Reporting Program) Constituent 4Q11 Unit Method Constituent 4Q11 Unit Method Metals Pesticides Chromium (III) µg/l EPA Aldrin <0.005 µg/l EPA 608 Volatile Organic Chemicals (VOCs) BHC, alpha isomer <0.01 µg/l EPA 608 Acrolein <2 µg/l EPA 624 BHC, beta isomer <0.005 µg/l EPA 608 Acrylonitrile <2 µg/l EPA 624 BHC, delta isomer <0.007 µg/l EPA 608 Bromoform <0.5 µg/l EPA ,4'-DDT <0.01 µg/l EPA 608 Chlorodibromomethane 2.3 µg/l EPA ,4'-DDE <0.01 µg/l EPA 608 Chloroethane <0.5 µg/l EPA ,4'-DDD <0.01 µg/l EPA Chloroethylvinylether <1 µg/l EPA 624 Dieldrin <0.01 µg/l EPA 608 Chloroform 71.3 µg/l EPA Endosulfan I <0.01 µg/l EPA 608 Dichlorobromomethane 16.3 µg/l EPA Endosulfan II <0.01 µg/l EPA 608 Methyl Bromide <1 µg/l EPA Endosulfan Sulfate <0.01 µg/l EPA 608 Methyl Chloride <0.5 µg/l EPA Unregulated Chemicals Acid Extractibles Endrin Aldehyde <0.016 µg/l EPA Chlorophenol <1 µg/l EPA 625 Chromium VI 0.20 µg/l EPA ,4-Dichlorophenol <2 µg/l EPA 625 Ethyl tertiary butyl ether <0.5 µg/l EPA ,4-Dimethylphenol <1 µg/l EPA 625 Tertiary amyl methyl ether <0.5 µg/l EPA Methyl-4,6-dinitrophenol <2 µg/l EPA 625 Chemicals w/ State Notification Levels 2 2,4-Dinitrophenol <3 µg/l EPA 625 Boron 0.2 mg/l EPA Nitrophenol <1 µg/l EPA 625 n-butylbenzene <0.5 µg/l EPA Nitrophenol <3 µg/l EPA 625 sec-butylbenzene <0.5 µg/l EPA Chloro-3-methylphenol <1 µg/l EPA 625 tert-butylbenzene <0.5 µg/l EPA Phenol <1 µg/l EPA 625 Carbon disulfide <0.5 µg/l EPA ,4,6-Trichlorophenol <1 µg/l EPA 625 Chlorate 190 µg/l EPA Base/Neutral Extractibles 2-Chlorotoluene <0.5 µg/l EPA Acenaphthene <1 µg/l EPA Chlorotoluene <0.5 µg/l EPA Acenaphthylene <1 µg/l EPA 625 Diazinon <0.1 µg/l EPA Anthracene <1 µg/l EPA 625 Dichlorodifluoromethane (Freon 12) <0.5 µg/l EPA Benzidine <5 µg/l EPA 625 1,4 - Dioxane <1 µg/l EPA 522 Benzo(a)anthracene <5 µg/l EPA 625 Ethylene glycol <4 mg/l EPA 8015B Benzo(b)fluoranthene <1 µg/l EPA 625 Formaldehyde 31 µg/l EPA 556 Benzo(g,h,i)perylene <2 µg/l EPA 625 HMX <0.4 µg/l EPA 8330B Benzo(k)fluoranthene <1 µg/l EPA 625 Isopropylbenzene <0.5 µg/l EPA Bis(2-chloroethoxy)methane <2 µg/l EPA 625 Methyl isobutyl ketone (MIBK) <2 µg/l EPA Bis(2-chloroethyl)ether <1 µg/l EPA 625 N-Nitrosodiethylamine (NDEA) <2 µg/l EPA 521 Bis(2-chloroisopropyl)ether <1 µg/l EPA 625 N-nitrosodimethylamine (NDMA) <2 ng/l EPA Bromophenyl phenyl ether <1 µg/l EPA 625 Propachlor <0.05 µg/l EPA Butyl benzyl phthalate <1 µg/l EPA 625 N-propylbenzene <0.5 µg/l EPA Chloronaphthalene <1 µg/l EPA 625 RDX <0.4 µg/l EPA 8330B 4-Chlorophenyl phenyl ether <1 µg/l EPA 625 Tertiary butyl alcohol NA µg/l EPA Chrysene <1 µg/l EPA 625 1,2,3-Trichloropropane (1,2,3-TCP) <0.5 µg/l EPA Dibenzo(a,h)anthracene <1 µg/l EPA 625 1,2,4 trimethylbenzene <0.5 µg/l EPA ,3-Dichlorobenzene <1 µg/l EPA 625 1,3,5-trimethylbenzene <0.5 µg/l EPA ,3-Dichlorobenzidine <5 µg/l EPA 625 2,4,6-Trinitrotoluene <0.4 µg/l EPA 8330B Diethyl phthalate <2 µg/l EPA 625 Vanadium 2 µg/l EPA Dimethyl phthalate <1 µg/l EPA 625 Endocrine Disrupting Chemicals, Pharmaceuticals and Other Chemicals 2 Di-n-butyl phthalate <1 µg/l EPA 625 Acetominophen <1 ng/l LC-MS-MS 2,4-Dinitrotoluene <1 µg/l EPA 625 Bis Phenol A (BPA) <10 ng/l LC-MS-MS 2,6-Dinitrotoluene <2 µg/l EPA 625 Caffeine <3 ng/l LC-MS-MS Di-n-octyl phthalate <1 µg/l EPA 625 Carbamazepine 67 ng/l LC-MS-MS Azobenzene <1 µg/l EPA 625 Diazepam <1 ng/l LC-MS-MS Fluoranthene <1 µg/l EPA 625 Estradiol <1 ng/l LC-MS-MS Fluorene <1 µg/l EPA 625 Estrone <1 ng/l LC-MS-MS Hexachlorobutadiene <1 µg/l EPA 625 Ethinyl Estradiol - 17 alpha <5 ng/l LC-MS-MS Hexachlorocyclopentadiene <5 µg/l EPA 625 Fluoxetine 17 ng/l LC-MS-MS Hexachloroethane <1 µg/l EPA 625 Gemfibrozil <1 ng/l LC-MS-MS Indeno(1,2,3-cd)pyrene <2 µg/l EPA 625 Ibuprofen <1 ng/l LC-MS-MS Isophorone <1 µg/l EPA 625 Iopromide 89 ng/l LC-MS-MS Naphthalene <1 µg/l EPA 625 Progesterone <1 ng/l LC-MS-MS Nitrobenzene <1 µg/l EPA 625 Testosterone <1 ng/l LC-MS-MS N-Nitroso-di-n-propylamine <1 µg/l EPA 625 Sulfamethoxazole 4.1 ng/l LC-MS-MS N-Nitrosodiphenylamine <1 µg/l EPA 625 Trimethoprim <1 ng/l LC-MS-MS Phenanthrene <1 µg/l EPA 625 Triclosan <5 ng/l LC-MS-MS Pyrene <1 µg/l EPA 625 EDTA <0.1 mg/l Dionex-MWH 1 Trivalent chromium is measured as total chromium 2 Chemicals with State Notification Levels, Nitrosamines, and EDC, Pharmaceuticals & Other Chemicals NA: Tertiary butyl alcohol was not analyzed during 4Q11; it is required annually and was analyzed the previous 3 quarters of Page 1 of 1

18 Table 2-5a Lysimeter and Surface Water Monitoring: TOC, Nitrogen Species, and EC 8th Street Basin Site Depth, bgs Date TOC TN * TIN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mm/dd/yy mg/l mg/l mg/l mg/l mg/l mg/l µmho/cm 8TH-LYS /01/ <0.2 < TH-LYS /20/ TH-LYS /01/ <0.6 <0.2 <0.1 <0.5 < TH-LYS /20/ < <0.5 < Banana Basin Site Depth, bgs Date TOC TN * TIN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mm/dd/yy mg/l mg/l mg/l mg/l mg/l mg/l µmho/cm BNA-LYS /04/ < BNA-LYS /13/ < BNA-LYS /20/ < BNA-LYS /26/ < BNA-LYS /01/ <0.5 < BNA-LYS /09/ BNA-LYS /16/ <0.5 < BNA-LYS /22/ BNA-LYS /30/ < BNA-LYS /06/ < BNA-LYS /14/ BNA-LYS /20/ < BNA-LYS /28/ < BNA-LYS /16/ BNA-LYS /22/ BNA-LYS /30/ < BNA-LYS /04/ <0.5 < BNA-LYS /13/ <0.5 < BNA-LYS /20/ <0.5 < BNA-LYS /26/ <0.5 < BNA-LYS /01/ BNA-LYS /06/ < BNA-LYS /14/ <0.5 < BNA-LYS /20/ <0.5 < BNA-LYS /28/ <0.5 < Brooks Basin Site Depth, bgs Date TOC TN * TIN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mm/dd/yy mg/l mg/l mg/l mg/l mg/l mg/l µmho/cm BRK-LYS /26/ < BRK-LYS /30/ < BRK-LYS /20/ BRK-LYS /26/ <0.1 <0.5 < BRK-LYS /30/ < BRK-LYS /20/ <0.6 <0.2 <0.1 <0.5 < Hickory East Basin Site Depth, bgs Date TOC TN * TIN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mm/dd/yy mg/l mg/l mg/l mg/l mg/l mg/l µmho/cm HKYE-LYS /04/ < HKYE-LYS /13/ < HKYE-LYS /09/ < HKYE-LYS /16/ < HKYE-LYS /22/ HKYE-LYS /30/ < HKYE-LYS /06/ < HKYE-LYS /14/ < HKYE-LYS /20/ < HKYE-LYS /28/ < HKYE-LYS /04/ <0.5 HKYE-LYS /13/ < HKYE-LYS /22/ HKYE-LYS /06/ < HKYE-LYS /14/ HKYE-LYS /20/ < HKYE-LYS /28/ <0.5 < Page 1 of 2

19 Table 2-5a Lysimeter and Surface Water Monitoring: TOC, Nitrogen Species, and EC RP3 Basin Site Depth, bgs Date TOC TN * TIN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mm/dd/yy mg/l mg/l mg/l mg/l mg/l mg/l µmho/cm RP31-LYS /04/ RP31-LYS /22/ RP31-LYS /20/ RP31-LYS /04/ < <0.5 < RP31-LYS /22/ < <0.5 < RP31-LYS /20/ < <0.5 < San Sevaine Basin Site Depth, bgs Date TOC TN * TIN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mm/dd/yy mg/l mg/l mg/l mg/l mg/l mg/l µmho/cm SS5-LYS /28/ SS5-LYS /28/ <0.5 < SS5-LYS /28/ <0.6 < <0.5 < SS5-LYS /28/ SS5-LYS /28/ Victoria Basin Site Depth, bgs Date TOC TN * TIN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mm/dd/yy mg/l mg/l mg/l mg/l mg/l mg/l µmho/cm VCT-LYS /22/ < VCT-LYS /30/ < VCT-LYS /06/ VCT-LYS /14/ VCT-LYS /20/ VCT-LYS /28/ VCT-LYS /22/ VCT-LYS /30/ VCT-LYS /14/ VCT-LYS /20/ VCT-LYS /28/ VCT-LYS /20/ VCT-LYS /28/ VCT-LYS /14/ VCT-LYS /20/ VCT-LYS /28/ VCT-LYS /22/ VCT-LYS /30/ <0.1 < VCT-LYS /06/ VCT-LYS /14/ <0.6 < <0.5 < VCT-LYS /20/ < <0.5 < VCT-LYS /28/ < <0.5 < VCT-LYS /20/ VCT-LYS /28/ VCT-LYS /22/ VCT-LYS /30/ <0.1 < VCT-LYS /06/ VCT-LYS /14/ <0.6 <0.2 <0.1 <0.5 < VCT-LYS /20/ < <0.5 < VCT-LYS /28/ <0.5 < Blank cells indicate that analysis was not run for a constituent on that particular date and/or depth due to insufficient volume * If TN limit of 5 mg/l is not met prior to the RW distribution system, TN compliance can be met at a point prior to reaching the regional groundwater, including lysimeters. Page 2 of 2

20 Table 2-5b Alternative Monitoring Plans Turner Basin Date Recycled Water* Recycled Water* Turner 1 & 2 Turner 3 & 4 Turner 1 & 2 Turner 3 & 4 mg/l==> TOC TN TOC (70% reduction) TOC (85% reduction) TN (87% reduction) 10/04/ /13/ /20/ /26/ /01/ /09/ /16/ /22/ /30/ /06/ /14/ /20/ /28/ *Recycled water sampled at GenOn Energy (formerly Reliant Energy) Brooks Basin Date BRK-LYS-00 BRK-LYS-00 BRK-LYS-00 BRK-LYS-00 mg/l==> TOC TN EC 10/26/ /30/ /20/ Date BRK-LYS-25 BRK-LYS-25 BRK-LYS-25 BRK-LYS-25 mg/l==> TOC TN** EC 10/26/ < /30/ < /20/ < Date BRK-1/1 BRK-1/1 BRK-1/1 BRK-1/1 mg/l==> TOC** TN EC Cl 10/26/ < /30/ < /20/ < **BRK-LYS-25 is the compliance point for TN and BRK-1/1 is the compliance point for TOC. NA: Not analyzed RP3 Basin Date RP3-LYS-35 RP3-LYS-35 RP3-LYS-35 mg/l==> TOC TN EC 10/04/ < /22/ < /20/ < Page 1 of 1

21 Table 2-6a Diluent Water Monitoring*: Stormwater Constituent Declez Declez Basin 11/07/11 San Sevaine San Sevaine /07/11 Etiwanda Victoria Basin 12/12/11 W. Fontana Banana Basin 12/12/11 Unit Method NO 2 -N mg/l EPA NO 3 -N mg/l EPA TDS mg/l SM 2540C Total Coliform mpn/100ml SM 9221B Oil & Grease <2 <2 <2 <2 mg/l EPA 1664A Inorganic Chemicals Aluminum µg/l EPA Antimony <1 µg/l EPA Arsenic <2 <2 <2 <2 µg/l EPA Asbestos <6.63 <6.63 <6.63 <6.63 MFL EPA Barium µg/l EPA Beryllium <0.5 <0.5 <0.5 <0.5 µg/l EPA Cadmium <0.25 <0.25 <0.25 <0.25 µg/l EPA Chromium µg/l EPA Cyanide <0.005 <0.005 <0.005 <0.005 mg/l SM 4500-CN E Fluoride <0.1 <0.1 mg/l SM 4500-F C Mercury <0.05 <0.05 <0.05 <0.05 µg/l EPA Nickel µg/l EPA Perchlorate <4 <4 <4 <4 µg/l EPA 314 Selenium <2 <2 <2 <2 µg/l EPA Thallium <1 <1 <1 <1 µg/l EPA Volatile Organic Chemicals (VOCs) Benzene <0.5 <0.5 <0.5 <0.5 µg/l EPA Carbon Tetrachloride <0.5 <0.5 <0.5 <0.5 µg/l EPA ,2-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA ,4-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA ,1-Dichloroethane <0.5 <0.5 <0.5 <0.5 µg/l EPA ,2-Dichloroethane <0.5 <0.5 <0.5 <0.5 µg/l EPA ,1-Dichloroethylene <0.5 <0.5 <0.5 <0.5 µg/l EPA cis-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 µg/l EPA trans-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 µg/l EPA Dichloromethane <0.5 <0.5 <0.5 <0.5 µg/l EPA ,2-Dichloropropane <0.5 <0.5 <0.5 <0.5 µg/l EPA ,3-Dichloropropene <0.5 <0.5 <0.5 <0.5 µg/l EPA Ethylbenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA Chlorobenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA Methyl Tert-butyl ether (MTBE) <0.5 <0.5 <0.5 <0.5 µg/l EPA Styrene <0.5 <0.5 <0.5 <0.5 µg/l EPA ,1,2,2-Tetrachloroethane <0.5 <0.5 <0.5 <0.5 µg/l EPA Tetrachloroethylene <0.5 <0.5 <0.5 <0.5 µg/l EPA Toluene <0.5 <0.5 <0.5 <0.5 µg/l EPA ,2,4-Trichlorobenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA ,1,1-Trichloroethane <0.5 <0.5 <0.5 <0.5 µg/l EPA ,1,2-Trichloroethane <0.5 <0.5 <0.5 <0.5 µg/l EPA Trichloroethylene <0.5 <0.5 <0.5 <0.5 µg/l EPA Trichlorofluoromethane <0.5 <0.5 <0.5 <0.5 µg/l EPA ,1,2-Trichloro-1,2,2-Trifluoroethane <0.5 <0.5 <0.5 <0.5 µg/l EPA Vinyl Chloride <0.5 <0.5 <0.5 <0.5 µg/l EPA Total Xylenes <1 <1 <1 <1 µg/l EPA Non-Volatile Synthetic Organic Chemicals (SOCs) Alachlor (Alanex) <0.1 <0.1 <0.1 <0.1 µg/l EPA 505 Atrazine <0.05 <0.05 <0.05 <0.05 µg/l EPA Bentazon <0.5 <0.5 <0.5 <0.5 µg/l EPA Benzo(a)pyrene <0.02 <0.02 <0.02 <0.02 µg/l EPA Carbofuran <0.5 <0.5 <0.5 <0.5 µg/l EPA531.2 Chlordane <0.1 <0.1 <0.1 <0.1 µg/l EPA 505 2,4-D <0.1 <0.1 <0.1 <0.1 µg/l EPA Dalapon <1 <1 <1 <1 µg/l EPA Dibromochloropropane <0.01 <0.01 <0.01 <0.01 µg/l EPA Di(2-ethylhexyl)adipate <0.6 <0.6 <0.6 <0.6 µg/l EPA Di(2-ethylhexyl)phthalate < µg/l EPA Dinoseb <0.2 <0.2 <0.2 <0.2 µg/l EPA Diquat <0.4 <0.4 <0.4 <0.4 µg/l EPA Endothall <5 <5 <5 <5 µg/l EPA Endrin <0.01 <0.01 <0.01 <0.01 µg/l EPA 505 Ethylene Dibromide <0.01 <0.01 <0.01 <0.01 µg/l EPA Glyphosate 9 <6 270 <6 µg/l EPA 547 Heptachlor <0.01 <0.01 <0.01 <0.01 µg/l EPA 505 Page 1 of 2

22 Table 2-6a Diluent Water Monitoring*: Stormwater Constituent Declez Declez Basin 11/07/11 San Sevaine San Sevaine /07/11 Etiwanda Victoria Basin 12/12/11 W. Fontana Banana Basin 12/12/11 Unit Method Heptachlor Epoxide <0.01 <0.01 <0.01 <0.01 µg/l EPA 505 Hexachlorobenzene <0.05 <0.05 <0.05 <0.05 µg/l EPA Hexachlorocyclopentadiene <0.05 <0.05 <0.05 <0.05 µg/l EPA Lindane <0.01 <0.01 <0.01 <0.01 µg/l EPA 505 Methoxychlor <0.05 <0.05 <0.05 <0.05 µg/l EPA 505 Molinate <0.1 <0.1 <0.1 <0.1 µg/l EPA Oxamyl <0.5 <0.5 <0.5 <0.5 µg/l EPA Pentachlorophenol <0.04 <0.04 <0.04 <0.04 µg/l EPA Picloram <0.1 <0.1 <0.1 <0.1 µg/l EPA PCB 1016 <0.08 <0.08 <0.08 <0.08 µg/l EPA 505 PCB 1221 <0.1 <0.1 <0.1 <0.1 µg/l EPA 505 PCB 1232 <0.1 <0.1 <0.1 <0.1 µg/l EPA 505 PCB 1242 <0.1 <0.1 <0.1 <0.1 µg/l EPA 505 PCB 1248 <0.1 <0.1 <0.1 <0.1 µg/l EPA 505 PCB 1254 <0.1 <0.1 <0.1 <0.1 µg/l EPA 505 PCB 1260 <0.1 <0.1 <0.1 <0.1 µg/l EPA 505 Simazine <0.05 <0.05 <0.05 <0.05 µg/l EPA Thiobencarb <0.2 <0.2 <0.2 <0.2 µg/l EPA Toxaphene <0.5 <0.5 <0.5 <0.5 µg/l EPA 505 2,3,7,8-TCDD (Dioxin) <5 <5 <5 <5 pg/l EPA ,4,5-TP (Silvex) <0.2 <0.2 <0.2 <0.2 µg/l EPA Disinfection Byproducts Total Trihalomethanes (TTHMs) <2 <2 <2 <2 µg/l EPA 524.2/624 Total Haloacetic Acids (HAA5) <2 <2 <2 <2 µg/l SM 6251B Bromate <5 <5 <5 <5 µg/l EPA Chlorite <0.01 <0.01 <0.01 <0.01 mg/l EPA Action Level Chemicals Copper µg/l EPA Lead µg/l EPA Radionuclides Combined Radium-226 and Radium 22 <0.750 < <0.276 pci/l EPA Gross Alpha Particle Activity <3 <3 4 <3 pci/l EPA Tritium <210 <205 <241 <241 pci/l EPA Strontium-90 <0.422 <0.407 <0.535 <0.554 pci/l EPA Gross Beta Particle Activity <3 pci/l EPA Uranium <0.7 <0.7 <0.7 <0.7 pci/l EPA Unregulated Chemicals Chromium VI µg/l EPA Ethyl tertiary butyl ether <0.5 <0.5 <0.5 <0.5 µg/l EPA Tertiary amyl methyl ether <2 <2 <2 <2 µg/l EPA Chemicals w/ State Notification Levels Boron <0.1 <0.1 <0.1 <0.1 mg/l EPA n-butylbenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA sec-butylbenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA tert-butylbenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA Carbon disulfide <0.5 <0.5 <0.5 <0.5 µg/l EPA Chlorotoluene <0.5 <0.5 <0.5 <0.5 µg/l EPA Chlorotoluene <0.5 <0.5 <0.5 <0.5 µg/l EPA Dichlorodifluoromethane (Freon 12) <0.5 <0.5 <0.5 <0.5 µg/l EPA ,4 - Dioxane <1 <1 <1 <1 µg/l EPA 522 Isopropylbenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA Methyl isobutyl ketone (MIBK) <2 <2 <2 <2 µg/l EPA N-nitrosodimethylamine (NDMA) 3 <2 65 <2 ng/l EPA 521 N-propylbenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA ,2,3-Trichloropropane (1,2,3-TCP) <0.5 <0.5 <0.5 <0.5 µg/l EPA ,2,4 trimethylbenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA ,3,5-trimethylbenzene <0.5 <0.5 <0.5 <0.5 µg/l EPA Vanadium µg/l EPA Secondary Maximum Contaminant Level Chemicals Aluminum µg/l EPA Corrosivity SI SM 2330B Foaming Agents (MBAS) mg/l SM 5540C/EPA Iron µg/l EPA Manganese µg/l EPA Odor--Threshold TON SM 2150B Silver 0.52 <0.25 <0.25 <0.25 µg/l EPA Thiobencarb <0.2 <0.2 <0.2 <0.2 µg/l EPA Zinc µg/l EPA * Diluent monitoring is monitored per the schedule identified in the CDPH-approved Diluent Water Monitoring Plan Page 2 of 2

23 Table 2-6b Diluent Water Monitoring: State Water Project - Silverwood Lake Constituent Oct-11 Nov-11 Dec-11 Unit Silica mg/l Calcium mg/l Magnesium mg/l Sodium mg/l Potassium mg/l Carbonate mg/l Bicarbonate mg/l Sulfate mg/l Chloride mg/l Nitrate mg/l Fluoride <0.1 <0.1 <0.14 mg/l Total Dissolved Soilds mg/l Total Hardness as CaCO mg/l Total Alkalinity as CaCO mg/l Free Carbon Dioxide mg/l ph unit Specific Conductance µmho/cm Color CU Turbidity NTU Temperature C Bromide mg/l Total Organic Carbon mg/l Page 1 of 1

24 BASIN CBWM_ID OWNER/LOCAL NAME Hickory and Banana Basins Turner Basins Declez Basin RP-3 Basins Jurupa Basin 7th & 8th Street Basins Brooks Basins San Sevaine Basins Victoria Basin Ely Basin Table 2-7 Summary of Wells in Groundwater Monitoring Networks SEPARATION DISTANCE (feet) SCREENED INTERVAL(S) (feet bgs) CASING DIAMETER (inches) STATUS Fontana Water Company - F37a 2240 upgradient Active Municipal California Speedway - Infield Well 2070 downgradient NA NA Active Industrial California Speedway downgradient , , & Active Industrial Reliant Energy - East Well 4070 downgradient , , , , & Active Industrial City Of Ontario downgradient NA 20 Active Municipal Inland Empire Utilities Agency - BH-1/1 340 downgradient Active Monitoring Inland Empire Utilities Agency - BH-1/2 340 downgradient Active Monitoring City Of Ontario crossgradient Inactive Municipal City Of Ontario downgradient Active Municipal City of Ontario - 38* 4600 crossgradient Active Municipal Inland Empire Utilities Agency - TRN-1/1 50 downgradient Active Monitoring Inland Empire Utilities Agency - TRN-1/2 50 downgradient Active Monitoring Inland Empire Utilities Agency - TRN-2/1 50 downgradient Active Monitoring Inland Empire Utilities Agency - TRN-2/2 50 downgradient Active Monitoring Jurupa Community Services District downgradient Active Municipal Jurupa Community Services District downgradient , & NA Active Municipal Jurupa Community Services District downgradient Active Municipal Inland Empire Utilities Agency - DCZ-1 50 downgradient Active Monitoring -- Inland Empire Utilities Agency - D-1/2 50 downgradient NA Monitoring Fontana Water Company - F23a 7900 upgradient Active Municipal Inland Empire Utilities Agency - Southridge JHS 5500 downgradient NA NA Active Monitoring Alcoa - Offsite MW downgradient NA NA Active Monitoring Alcoa - Offsite MW downgradient NA NA Active Monitoring Inland Empire Utilities Agency - RP3-1/1 100 downgradient Active Monitoring Inland Empire Utilities Agency - RP3-1/2 100 downgradient Active Monitoring Not currently planned for recharge San Antonio Water Company No downgradient , , , & Inactive Municipal City of Ontario No downgradient Inactive Municipal -- City of Ontario No downgradient Not Yet Constructed NA NA Municipal City of Ontario No downgradient Active Municipal Inland Empire Utilities Agency - 8TH-1/1 150 downgradient Active Monitoring Inland Empire Utilities Agency - 8TH-1/2 150 downgradient Active Monitoring Inland Empire Utilities Agency - 8TH-2/ downgradient Active Monitoring Inland Empire Utilities Agency - 8TH-2/ downgradient Active Monitoring City of Pomona P downgradient Active Municipal City of Pomona P downgradient , & NA Inactive Municipal City of Pomona P crossgradient Inactive Municipal City of Pomona P downgradient NA NA Active Municipal City of Pomona P downgradient Inactive Municipal Inland Empire Utilities Agency - BRK-1/1 144 downgradient Active Monitoring Inland Empire Utilities Agency - BRK-1/2 144 downgradient Active Monitoring Inland Empire Utilities Agency - BRK-2/ downgradient Active Monitoring Inland Empire Utilities Agency - BRK-2/ downgradient Active Monitoring Cucamonga Valley Water District No downgradient , , , & , 20 Active Municipal Inland Empire Utilities Agency - SS-1/1 and 1/2 ~ downgradient Active Monitoring Unitex ~1601 downgradient NA NA Active Private Domestic Cucamonga Valley Water District No downgradient , , , & , 20 Active Municipal Cucamonga Valley Water District No. 43** 8300 downgradient Active Municipal Inland Empire Utilities Agency - VCT-1/1 and 1/2 ~ downgradient Active Monitoring -- Inland Empire Utilities Agency - VCT-1/1 and 1/2 ~ 2000 downgradient Active Monitoring Ely Basin MW-1, Philadelphia Well (Casing 3) 100 downgradient Active Monitoring Ely Basin MW-2, Walnut Well (Casing 2) 3050 downgradient Active Monitoring Riverside Drive Well (43840-CWW) 6046 downgradient NA NA Active Private Irrigation Bishop Of San Bernardino Corp. - DOM 6500 downgradient NA NA Active Private Domestic Notes: NA = Data not available CBWM ID = Chino Basin Water Master well identification numbe bgs = below ground surface * = Ontario Well No. 38 replaced Ontario Well No. 19, which is inactive ** = Cucamonga Valley Water District No. 43 replaced CVWD Well Nos. 35 & 36, which are inactive. TYPE Page 1 of 1

25 Table 2-8a Groundwater Monitoring Well Results (Quarterly) Banana & Hickory Turner RP3 7th & 8th St. Brooks Ely Declez** Sample Location Date TOC (mg/l) Total Coliform (MPN/100mL) ph EC (µmho/cm) TDS (mg/l) Al (µg/l) Color (units) Cu (µg/l) Corrosivity Index (SI) Foaming Agents (mg/l) Fe (µg/l) Fontana Water Co. - F37a 10/12/11 <0.1 < < < <0.5 1 <0.25 < <0.1 < < California Speedway - Infield Well 10/12/ < <25 < <0.05 <15 3 <0.5 1 <0.25 < <0.1 < < California Speedway 2 10/12/11 <0.1 < <25 < <0.05 <15 3 <0.5 <1 <0.25 < <0.1 < < Reliant Energy - East Well 10/12/11 <0.1 < <25 < < <0.5 1 <0.25 < < <0.1 < < Ontario Well No /17/11 <0.1 < <25 < <0.05 <15 1 <0.5 <1 <0.25 < < <0.1 < < BH-1/2 11/1/ < <25 15 < <0.05 <15 4 <0.5 1 <0.25 < < <0.1 < < Ontario Well No /17/ < <25 <3 < <0.05 <15 1 <0.5 <1 < < <0.1 < < Ontario Well No /29/11 < Ontario Well No /17/11 <0.1 < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < <0.1 < < T-1/2 10/24/ < <25 <3 < <0.05 <15 1 <0.5 1 <0.25 < < <0.1 <0.02 <0.1 <0.6 < T-2/1 10/24/ < <25 3 < <0.05 <15 <1 <0.5 1 <0.25 < < <0.1 < <0.6 < T-2/2 10/24/ < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < <0.1 < < Southridge JHS 11/16/ < <25 < <0.05 <15 2 <0.5 1 <0.25 < < < Alcoa MW1 10/10/ <25 <3 < <0.05 <15 2 <0.5 1 <0.25 < <0.1 < < Alcoa MW3 10/10/ < <25 < <0.05 <15 5 <0.5 1 <0.25 < <0.1 < < RP3-1/1 10/26/ < <25 < <0.05 <15 19 <0.5 1 <0.25 < < <0.1 < < RP3-1/2 11/2/ < <0.05 < <0.5 1 <0.25 < < < Ontario Well No /17/11 <0.1 < <25 <3 < <0.05 <15 <1 <0.5 <1 <0.25 < < <0.1 < < TH-1/1 12/8/ < <25 5 < <0.05 <15 14 <0.5 1 <0.25 < < < < TH-1/2 11/14/ < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < <0.1 < < TH-2/1 12/7/ < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < <0.1 < < TH-2/2 12/7/ < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < <0.1 < < Pomona Well No /17/ < <25 < <0.05 <15 <1 <0.5 <1 <0.25 < <0.1 < < Pomona Well No. 2 10/17/ < <25 < < <0.5 1 <0.25 < <0.1 < < Pomona Well No /17/ < <25 < <0.05 <15 <1 <0.5 1 <0.25 < <0.1 < < BRK-1/1 10/26/ <3 <0.05 <1 77 < <0.6 < BRK-1/1 11/30/ < <25 < <15 5 <0.5 <0.25 < < <0.1 < <0.6 < BRK-1/1 12/20/ <0.1 < <0.6 <0.5 BRK-1/2 11/30/11 <0.1 < <25 <3 < <0.05 <15 <1 <0.5 <1 <0.25 < < <0.1 < < BRK-2/1 11/30/ < <25 50 < <0.05 <15 12 <0.5 1 <0.25 < < <0.1 < < BRK-2/2 11/30/11 <0.1 < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < <0.1 < < Ely Basin MW1 Philadelphia St. 12/8/ < <25 15 < <0.05 <15 36 <0.5 1 <0.25 < < <0.1 < < Ely Basin MW2 Walnut St. 12/14/ < <25 60 < <0.05 <15 6 <0.5 2 <0.25 < < <0.1 < < Riverside Well (43840-CWW) 10/19/ < <25 < < <0.5 <1 <0.25 < < < Bishop of SB Corp. - DOM 10/19/ <25 < < <0.5 1 <0.25 < <0.1 < < JCSD Well No /3/ < <25 < <0.05 <15 <1 <0.5 <1 <0.25 < <0.1 < < JCSD Well No /3/ < <25 < <0.05 <15 <1 <0.5 <1 <0.25 < < <0.1 < < JCSD Well No /3/11 <0.1 < <25 < < <1 <0.5 <1 <0.25 < <0.1 < < DCZ-1/1 10/31/ < < <0.05 <15 3 <0.5 <1 <0.25 < < <0.1 < < SS-1/1 12/12/ < <25 <3 < <0.05 <15 2 <0.5 <1 <0.25 < <0.1 < < VCT-1/1 11/30/ < <25 20 < <0.05 <15 6 <0.5 1 <0.25 < <0.1 < < Victoria & San Sevaine VCT-2/2 12/13/ < <0.05 <15 10 <0.5 2 <0.25 < <0.1 < < Unitex /10/ <25 < <0.05 <15 2 <0.5 1 <0.25 < <0.1 < < CVWD Well No /1/ < <25 < <0.05 <15 <1 <0.5 <1 <0.25 < <0.1 < < Primary Maximum Contaminant Level Secondary Maximum Contaminant Level Blank cells indicate that analysis was not run for a constituent on that particular date. On certain dates, supplemental analysis was conducted on several monitoring wells. On those occasions, a full set of analysis was not necessary and only parameters of interest were analyzed. * Total dissolved metals reported for these monitoring wells. The remaining wells report total recoverable metals values. ** Recycled water delivery has not been initiated at this basin. Data collected and reported is for background monitoring purposes only and will not be discussed in report text until the basin starts receiving recycled water. Mn (µg/l) MTBE (µg/l) Odor Threshold (TON) Ag (µg/l) Thiobencarb (µg/l) Turbidity (NTU) Zn (µg/l) Cl (mg/l) Hardness (mg CaCO 3/L) Na (mg/l) SO 4 (mg/l) NH 3-N (mg/l) NO 2-N (mg/l) NO 3-N (mg/l) Nitrogen, Total (mg/l) TKN (mg/l) Alkalinity (mg CaCO 3/L) Dissolved Oxygen (mg/l) Page 1 of 1

26 Table 2-8b Groundwater Monitoring Well Results (Annual) Constituent Ely Basin MW-1 12/08/11 Ely Basin MW-2 12/14/11 SS-1/1 12/12/11 VCT-1/1 11/30/11 Inorganic Chemicals VCT-2/2 12/13/11 MCL Unit Method Asbestos <0.2 <0.2 <0.2 <0.2 <4 7 MFL EPA Cyanide <0.005 <0.005 <0.005 <0.005 < mg/l SM 4500-CN E Perchlorate <4 <4 <4 <4 <4 6 µg/l EPA 314 Mercury <0.05 <0.05 NA <0.05 < µg/l EPA Fluoride mg/l SM 4500-F C Aluminum, Dissolved <25 <25 <25 <25 < µg/l EPA Antimony, Dissolved <1 <1 <1 <1 <1 6 µg/l EPA Arsenic, Dissolved <2 <2 <2 <2 <2 10 µg/l EPA Barium, Dissolved µg/l EPA Beryllium, Dissolved <0.5 <0.5 <0.5 <0.5 <0.5 4 µg/l EPA Cadmium, Dissolved <0.25 <0.25 <0.25 <0.25 < µg/l EPA Chromium, Dissolved µg/l EPA Copper, Dissolved <0.5 <0.5 <0.5 < µg/l EPA Iron, Dissolved <15 <15 <15 <15 < (sec.) µg/l EPA Nickel, Dissolved µg/l EPA Manganese, Dissolved (sec.) µg/l EPA Selenium, Dissolved <2 <2 <2 <2 <2 50 µg/l EPA Silver, Dissolved <0.25 <0.25 <0.25 <0.25 < (sec.) µg/l EPA Thallium, Dissolved <1 <1 <1 <1 <1 2 µg/l EPA Zinc, Dissolved <1 < (sec.) µg/l EPA Volatile Organic Chemicals (VOCs) Benzene <0.5 <0.5 <0.5 <0.5 <0.5 1 µg/l EPA Carbon Tetrachloride <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,2-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,4-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,1-Dichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,2-Dichloroethane <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,1-Dichloroethylene <1 <1 <1 <1 <1 6 µg/l EPA cis-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 6 µg/l EPA trans-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 < µg/l EPA Dichloromethane <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,2-Dichloropropane <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,3-Dichloropropene <0.5 <0.5 <0.5 <0.5 < µg/l EPA Ethylbenzene <0.5 <0.5 <0.5 <0.5 < µg/l EPA Chlorobenzene <0.5 <0.5 <0.5 <0.5 < µg/l EPA Methyl Tert-butyl ether (MTBE) <0.5 <0.5 <0.5 <0.5 < µg/l EPA Styrene <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,1,2,2-Tetrachloroethane <0.5 <0.5 <0.5 <0.5 <0.5 1 µg/l EPA Tetrachloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Toluene <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,2,4-Trichlorobenzene <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,1,1-Trichloroethane <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,1,2-Trichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Trichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Trichlorofluoromethane <0.5 <0.5 <0.5 <0.5 < µg/l EPA ,1,2-Trichloro-1,2,2-Trifluoroethane <0.5 <0.5 <0.5 <0.5 < µg/l EPA Vinyl Chloride <0.5 <0.5 <0.5 <0.5 < µg/l EPA Total Xylenes <1 <1 <1 <1 < µg/l EPA Page 1 of 6

27 Table 2-8b Groundwater Monitoring Well Results (Annual) Ely Basin MW-1 12/08/11 Ely Basin MW-2 12/14/11 SS-1/1 Constituent 12/12/11 11/30/11 12/13/11 MCL Unit Method Non-Volatile Synthetic Organic Chemicals (SOCs) Alachlor (Alanex) <0.05 <0.05 <0.05 <0.05 < µg/l EPA Atrazine <0.05 <0.05 <0.05 <0.05 < µg/l EPA Bentazon <0.5 <0.5 <0.5 <0.5 < µg/l EPA Benzo(a)pyrene <0.02 <0.02 <0.02 <0.02 < µg/l EPA Carbofuran <0.5 <0.5 <0.5 <0.5 < µg/l EPA531.2 Chlordane NA <0.1 <0.1 <0.1 < µg/l EPA 505 2,4-D <0.1 <0.1 <0.1 <0.1 < µg/l EPA Dalapon <1 <1 <1 <1 <1 200 µg/l EPA Dibromochloropropane <0.01 <0.01 <0.01 <0.01 < µg/l EPA Di(2-ethylhexyl)adipate <0.6 <0.6 <0.6 <0.6 < µg/l EPA Di(2-ethylhexyl)phthalate 1.5 <0.6 <0.6 <0.6 <0.6 4 µg/l EPA Dinoseb <0.2 <0.2 <0.2 <0.2 <0.2 7 µg/l EPA Diquat <0.4 <0.4 <0.4 <0.4 < µg/l EPA Endothall <5 <5 <5 <5 <5 100 µg/l EPA Endrin NA <0.01 <0.01 <0.01 < µg/l EPA 505 Ethylene Dibromide <0.01 <0.01 <0.01 <0.01 < µg/l EPA Glyphosate <6 <6 <6 <6 <6 700 µg/l EPA 547 Heptachlor <0.01 <0.01 <0.01 <0.01 < µg/l EPA 505 Heptachlor Epoxide NA <0.01 <0.01 <0.01 < µg/l EPA 505 Hexachlorobenzene NA <0.05 <0.05 <0.05 < µg/l EPA Hexachlorocyclopentadiene <0.05 <0.05 <0.05 <0.05 < µg/l EPA Lindane NA <0.01 <0.01 <0.01 < µg/l EPA 505 Methoxychlor NA <0.05 <0.05 <0.05 < µg/l EPA 505 Molinate <0.1 <0.1 <0.1 <0.1 < µg/l EPA Oxamyl <0.5 <0.5 <0.5 <0.5 < µg/l EPA Pentachlorophenol <0.04 <0.04 <0.04 <0.04 < µg/l EPA Picloram <0.1 <0.1 <0.1 <0.1 < µg/l EPA PCB 1016 NA <0.08 <0.08 <0.08 < µg/l EPA 505 PCB 1221 NA <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1232 NA <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1242 NA <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1248 NA <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1254 NA <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1260 NA <0.1 <0.1 <0.1 < µg/l EPA 505 Simazine <0.05 <0.05 < µg/l EPA Thiobencarb <0.2 <0.2 <0.2 <0.2 < µg/l EPA Toxaphene NA <0.5 <0.5 <0.5 <0.5 3 µg/l EPA 505 2,3,7,8-TCDD (Dioxin) <5 <5 <5 <5 <5 30 pg/l EPA ,4,5-TP (Silvex) <0.2 <0.2 <0.2 <0.2 < µg/l EPA Copper, Dissolved <0.5 <0.5 <0.5 < µg/l EPA Lead, Dissolved <0.5 <0.5 <0.5 <0.5 < µg/l EPA Combined Radium-226 and Radium 228 <0.309 <0.273 < < pci/l EPA Gross Alpha Particle Activity <3 NA <3 <3 <3 15 pci/l EPA Tritium <230 <227 <226 <241 <226 20,000 pci/l EPA 906 Strontium-90 < <0.612 < pci/l EPA 905 Gross Beta Particle Activity <3 NA <3 <3 <3 50 pci/l EPA Uranium < <0.7 <0.7 < pci/l EPA NA: Not Analyzed. EPA Method 505 compunds will be reported in the 1Q12 report. Bold signifies an exceedance of an Maximum Contaminant Level. Explained in further detail in the report text. VCT-1/1 Notification Level Chemicals Radionuclides VCT-2/2 Page 2 of 6

28 Table 2-8b Groundwater Monitoring Well Results (Annual) 8TH-1/1 8TH-1/2 8TH-2/1 8TH-2/2 Constituent 12/08/11 11/14/11 12/07/11 Inorganic Chemicals 12/07/11 MCL Unit Method Asbestos <0.2 <0.2 <0.2 <0.2 7 MFL EPA Cyanide <0.005 <0.005 <0.005 < mg/l SM 4500-CN E Perchlorate <4 <4 <4 <4 6 µg/l EPA 314 Mercury <0.05 <0.05 <0.05 < µg/l EPA Fluoride mg/l SM 4500-F C Aluminum, Dissolved <25 <25 <25 < µg/l EPA Antimony, Dissolved <1 <1 <1 <1 6 µg/l EPA Arsenic, Dissolved <2 <2 <2 <2 10 µg/l EPA Barium, Dissolved µg/l EPA Beryllium, Dissolved <0.5 <0.5 <0.5 <0.5 4 µg/l EPA Cadmium, Dissolved <0.25 <0.25 <0.25 < µg/l EPA Chromium, Dissolved µg/l EPA Copper, Dissolved <0.5 <0.5 <0.5 < µg/l EPA Iron, Dissolved <15 <15 <15 < (sec.) µg/l EPA Nickel, Dissolved µg/l EPA Manganese, Dissolved 14 <1 <1 <1 50 (sec.) µg/l EPA Selenium, Dissolved <2 <2 <2 <2 50 µg/l EPA Silver, Dissolved <0.25 <0.25 <0.25 < (sec.) µg/l EPA Thallium, Dissolved <1 <1 <1 <1 2 µg/l EPA Zinc, Dissolved <1 1 <1 < (sec.) µg/l EPA Volatile Organic Chemicals (VOCs) Benzene <0.5 <0.5 <0.5 <0.5 1 µg/l EPA Carbon Tetrachloride <0.5 <0.5 <0.5 < µg/l EPA ,2-Dichlorobenzene <0.5 <0.5 <0.5 < µg/l EPA ,4-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,1-Dichloroethane <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,2-Dichloroethane <0.5 <0.5 <0.5 < µg/l EPA ,1-Dichloroethylene <1 <1 <1 <1 6 µg/l EPA cis-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 6 µg/l EPA trans-1,2-dichloroethylene <0.5 <0.5 <0.5 < µg/l EPA Dichloromethane <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,2-Dichloropropane <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,3-Dichloropropene <0.5 <0.5 <0.5 < µg/l EPA Ethylbenzene <0.5 <0.5 <0.5 < µg/l EPA Chlorobenzene <0.5 <0.5 <0.5 < µg/l EPA Methyl Tert-butyl ether (MTBE) <0.5 <0.5 <0.5 < µg/l EPA Styrene <0.5 <0.5 <0.5 < µg/l EPA ,1,2,2-Tetrachloroethane <0.5 <0.5 <0.5 <0.5 1 µg/l EPA Tetrachloroethylene <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Toluene <0.5 <0.5 <0.5 < µg/l EPA ,2,4-Trichlorobenzene <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,1,1-Trichloroethane <0.5 <0.5 <0.5 < µg/l EPA ,1,2-Trichloroethane <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Trichloroethylene <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Trichlorofluoromethane <0.5 <0.5 <0.5 < µg/l EPA ,1,2-Trichloro-1,2,2-Trifluoroethane <0.5 <0.5 <0.5 < µg/l EPA Vinyl Chloride <0.5 <0.5 <0.5 < µg/l EPA Total Xylenes <1 <1 <1 < µg/l EPA Page 3 of 6

29 Table 2-8b Groundwater Monitoring Well Results (Annual) 8TH-1/1 8TH-1/2 8TH-2/1 8TH-2/2 Constituent 12/08/11 11/14/11 12/07/11 12/07/11 MCL Unit Method Non-Volatile Synthetic Organic Chemicals (SOCs) Alachlor (Alanex) <0.05 <0.05 <0.05 < µg/l EPA Atrazine <0.05 <0.05 <0.05 < µg/l EPA Bentazon <0.5 <0.5 <0.5 < µg/l EPA Benzo(a)pyrene <0.02 <0.02 <0.02 < µg/l EPA Carbofuran <0.5 <0.5 <0.5 < µg/l EPA531.2 Chlordane NA <0.1 <0.1 < µg/l EPA 505 2,4-D <0.1 <0.1 <0.1 < µg/l EPA Dalapon <1 <1 <1 <1 200 µg/l EPA Dibromochloropropane <0.01 <0.01 < µg/l EPA Di(2-ethylhexyl)adipate <0.6 <0.6 <0.6 < µg/l EPA Di(2-ethylhexyl)phthalate < <0.6 <0.6 4 µg/l EPA Dinoseb <0.2 <0.2 <0.2 <0.2 7 µg/l EPA Diquat <0.4 <0.4 <0.4 < µg/l EPA Endothall <5 <5 <5 <5 100 µg/l EPA Endrin NA <0.01 <0.01 < µg/l EPA 505 Ethylene Dibromide <0.01 <0.01 <0.01 < µg/l EPA Glyphosate <6 <6 <6 <6 700 µg/l EPA 547 Heptachlor NA <0.01 <0.01 < µg/l EPA 505 Heptachlor Epoxide NA <0.01 <0.01 < µg/l EPA 505 Hexachlorobenzene <0.05 <0.05 <0.05 < µg/l EPA Hexachlorocyclopentadiene <0.05 <0.05 <0.05 < µg/l EPA Lindane NA <0.01 <0.01 < µg/l EPA 505 Methoxychlor NA <0.05 <0.05 < µg/l EPA 505 Molinate <0.1 <0.1 <0.1 < µg/l EPA Oxamyl <0.5 <0.5 <0.5 < µg/l EPA Pentachlorophenol <0.04 <0.04 <0.04 < µg/l EPA Picloram <0.1 <0.1 <0.1 < µg/l EPA PCB 1016 NA <0.08 <0.08 < µg/l EPA 505 PCB 1221 NA <0.1 <0.1 < µg/l EPA 505 PCB 1232 NA <0.1 <0.1 < µg/l EPA 505 PCB 1242 NA <0.1 <0.1 < µg/l EPA 505 PCB 1248 NA <0.1 <0.1 < µg/l EPA 505 PCB 1254 NA <0.1 <0.1 < µg/l EPA 505 PCB 1260 NA <0.1 <0.1 < µg/l EPA 505 Simazine 0.26 < < µg/l EPA Thiobencarb <0.2 <0.2 <0.2 < µg/l EPA Toxaphene NA <0.5 <0.5 <0.5 3 µg/l EPA 505 2,3,7,8-TCDD (Dioxin) <5 <5 <5 <5 30 pg/l EPA ,4,5-TP (Silvex) <0.2 <0.2 <0.2 < µg/l EPA Notification Level Chemicals Copper, Dissolved <0.5 <0.5 <0.5 < µg/l EPA Lead, Dissolved <0.5 <0.5 <0.5 < µg/l EPA Radionuclides Combined Radium-226 and Radium 228 <0.509 <0.604 <0.409 < pci/l EPA Gross Alpha Particle Activity <3 <3 < pci/l EPA Tritium <231 <459 <229 <230 20,000 pci/l EPA 906 Strontium-90 <0.327 <1.94 <0.262 < pci/l EPA 905 Gross Beta Particle Activity <3 <3 <3 <3 50 pci/l EPA Uranium <0.7 < pci/l EPA NA: Not Analyzed Bold signifies an exceedance of an Maximum Contaminant Level. Explained in further detail in the report text. Page 4 of 6

30 Table 2-8b Groundwater Monitoring Well Results (Annual) BRK-1/1 BRK-1/2 BRK-2/1 BRK-2/2 Constituent 11/30/11 11/30/11 11/30/11 Inorganic Chemicals 11/30/11 MCL Unit Method Asbestos <0.2 <0.2 <0.2 <0.2 7 MFL EPA Cyanide <0.005 <0.005 <0.005 < mg/l SM 4500-CN E Perchlorate <4 12 <4 <4 6 µg/l EPA 314 Mercury <0.05 <0.05 <0.05 < µg/l EPA Fluoride mg/l SM 4500-F C Aluminum, Dissolved <25 <25 <25 < µg/l EPA Antimony, Dissolved <1 <1 <1 <1 6 µg/l EPA Arsenic, Dissolved <2 <2 < µg/l EPA Barium, Dissolved µg/l EPA Beryllium, Dissolved <0.5 <0.5 <0.5 <0.5 4 µg/l EPA Cadmium, Dissolved <0.25 <0.25 <0.25 < µg/l EPA Chromium, Dissolved µg/l EPA Copper, Dissolved <0.5 <0.5 <0.5 < µg/l EPA Iron, Dissolved <15 <15 <15 < (sec.) µg/l EPA Nickel, Dissolved µg/l EPA Manganese, Dissolved 5 <1 12 <1 50 (sec.) µg/l EPA Selenium, Dissolved <2 <2 <2 <2 50 µg/l EPA Silver, Dissolved <0.25 <0.25 <0.25 < (sec.) µg/l EPA Thallium, Dissolved <1 <1 <1 <1 2 µg/l EPA Zinc, Dissolved <1 <1 <1 < (sec.) µg/l EPA Volatile Organic Chemicals (VOCs) Benzene <0.5 <0.5 <0.5 <0.5 1 µg/l EPA Carbon Tetrachloride <0.5 <0.5 <0.5 < µg/l EPA ,2-Dichlorobenzene <0.5 <0.5 <0.5 < µg/l EPA ,4-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,1-Dichloroethane <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,2-Dichloroethane <0.5 <0.5 <0.5 < µg/l EPA ,1-Dichloroethylene <1 <1 <1 <1 6 µg/l EPA cis-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 6 µg/l EPA trans-1,2-dichloroethylene <0.5 <0.5 <0.5 < µg/l EPA Dichloromethane <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,2-Dichloropropane <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,3-Dichloropropene <0.5 <0.5 <0.5 < µg/l EPA Ethylbenzene <0.5 <0.5 <0.5 < µg/l EPA Chlorobenzene <0.5 <0.5 <0.5 < µg/l EPA Methyl Tert-butyl ether (MTBE) <0.5 <0.5 <0.5 < µg/l EPA Styrene <0.5 <0.5 <0.5 < µg/l EPA ,1,2,2-Tetrachloroethane <0.5 <0.5 <0.5 <0.5 1 µg/l EPA Tetrachloroethylene <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Toluene <0.5 <0.5 <0.5 < µg/l EPA ,2,4-Trichlorobenzene <0.5 <0.5 <0.5 <0.5 5 µg/l EPA ,1,1-Trichloroethane <0.5 <0.5 <0.5 < µg/l EPA ,1,2-Trichloroethane <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Trichloroethylene <0.5 <0.5 <0.5 <0.5 5 µg/l EPA Trichlorofluoromethane <0.5 <0.5 <0.5 < µg/l EPA ,1,2-Trichloro-1,2,2-Trifluoroethane <0.5 <0.5 <0.5 < µg/l EPA Vinyl Chloride <0.5 <0.5 <0.5 < µg/l EPA Total Xylenes <1 <1 <1 < µg/l EPA Page 5 of 6

31 Table 2-8b Groundwater Monitoring Well Results (Annual) BRK-1/1 BRK-1/2 BRK-2/1 BRK-2/2 Constituent 11/30/11 11/30/11 11/30/11 11/30/11 MCL Unit Method Non-Volatile Synthetic Organic Chemicals (SOCs) Alachlor (Alanex) <0.05 <0.05 <0.05 < µg/l EPA Atrazine <0.05 <0.05 <0.05 < µg/l EPA Bentazon <0.5 <0.5 <0.5 < µg/l EPA Benzo(a)pyrene <0.02 <0.02 <0.02 < µg/l EPA Carbofuran <0.5 <0.5 <0.5 < µg/l EPA531.2 Chlordane <0.1 <0.1 <0.1 < µg/l EPA 505 2,4-D <0.1 <0.1 <0.1 < µg/l EPA Dalapon <1 <1 <1 <1 200 µg/l EPA Dibromochloropropane < <0.01 < µg/l EPA Di(2-ethylhexyl)adipate <0.6 <0.6 <0.6 < µg/l EPA Di(2-ethylhexyl)phthalate <0.6 <0.6 < µg/l EPA Dinoseb <0.2 <0.2 <0.2 <0.2 7 µg/l EPA Diquat <0.4 <0.4 <0.4 < µg/l EPA Endothall <5 <5 <5 <5 100 µg/l EPA Endrin <0.01 <0.01 <0.01 < µg/l EPA 505 Ethylene Dibromide <0.01 <0.01 <0.01 < µg/l EPA Glyphosate <6 <6 <6 <6 700 µg/l EPA 547 Heptachlor <0.01 <0.01 <0.01 < µg/l EPA 505 Heptachlor Epoxide <0.01 <0.01 <0.01 < µg/l EPA 505 Hexachlorobenzene <0.05 <0.05 <0.05 < µg/l EPA Hexachlorocyclopentadiene <0.05 <0.05 <0.05 < µg/l EPA Lindane <0.01 <0.01 <0.01 < µg/l EPA 505 Methoxychlor <0.05 <0.05 <0.05 < µg/l EPA 505 Molinate <0.1 <0.1 <0.1 < µg/l EPA Oxamyl <0.5 <0.5 <0.5 < µg/l EPA Pentachlorophenol <0.04 <0.04 <0.04 < µg/l EPA Picloram <0.1 <0.1 <0.1 < µg/l EPA PCB 1016 <0.08 <0.08 <0.08 < µg/l EPA 505 PCB 1221 <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1232 <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1242 <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1248 <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1254 <0.1 <0.1 <0.1 < µg/l EPA 505 PCB 1260 <0.1 <0.1 <0.1 < µg/l EPA 505 Simazine 0.06 <0.05 <0.05 < µg/l EPA Thiobencarb <0.2 <0.2 <0.2 < µg/l EPA Toxaphene <0.5 <0.5 <0.5 <0.5 3 µg/l EPA 505 2,3,7,8-TCDD (Dioxin) <5 <5 <5 <5 30 pg/l EPA ,4,5-TP (Silvex) <0.2 <0.2 <0.2 < µg/l EPA Notification Level Chemicals Copper, Dissolved <0.5 <0.5 <0.5 < µg/l EPA Lead, Dissolved <0.5 <0.5 <0.5 < µg/l EPA Radionuclides Combined Radium-226 and Radium 228 <0.512 <0.637 <0.572 < pci/l EPA Gross Alpha Particle Activity <3 <3 6 <3 15 pci/l EPA Tritium <241 <242 <242 <242 20,000 pci/l EPA 906 Strontium-90 <0.564 <0.64 <0.548 < pci/l EPA 905 Gross Beta Particle Activity <3 <3 <3 <3 50 pci/l EPA Uranium pci/l EPA NA: Not Analyzed Bold signifies an exceedance of an Maximum Contaminant Level. Explained in further detail in the report text. Page 6 of 6

32 Table 3-1 Diluent & Recycled Water Recharge Volume (Acre-Feet) Imported Water Diluent Water Local Runoff / Storm Flow Recycled Water Date 7th & 8th St. Banana Brooks Ely Hickory RP3 San Sevaine Turner Victoria 7th & 8th St. Banana Brooks Ely Hickory RP3 San Sevaine Turner Victoria 7th & 8th St. Banana Brooks Ely Hickory RP3 San Sevaine Turner Victoria Jan Feb Mar Q11 Total Apr * May Jun Q11 Total * Jul Aug Sep Q11 Total Oct Nov Dec Q11 Total * Negative numbers indicate that more water was transferred from a basin than captured. Transferred water was captured in a downstream basin. Page 1 of 1

33 Table 6-1 MVWD ASR Project - TIN/TDS Mass Balance 4Q11 3Q11 2Q11 4Q11 3Q11 2Q11 1Q11 4Q11 3Q11 2Q11 1Q11 4Q11 3Q11 2Q11 1Q11 ASR Well No. 4 Injection Recovery Mass Balance Date Volume TIN TDS Volume TIN TDS Storage TIN TDS (AF) (mg/l) (mg/l) (AF) (mg/l) (mg/l) (AF) (kg) (kg) Jan (903) (2,931) (85,748) Feb (928) (2,931) (85,748) Mar (963) (2,931) (85,748) Apr (201) (2,645) (60,049) May (287) (2,645) (60,049) Jun (307) (2,626) (54,640) Jul (319) (2,613) (49,851) Aug (356) (2,602) (46,238) Sep (300) (2,575) (36,638) Oct (300) (2,575) (36,638) Nov (300) (2,575) (36,638) Dec (301) (2,575) (36,638) ASR Well No. 30 Injection Recovery Mass Balance Date Volume TIN TDS Volume TIN TDS Storage TIN TDS (AF) (mg/l) (mg/l) (AF) (mg/l) (mg/l) (AF) (kg) (kg) Jan (722) 213,038 Feb (722) 213,038 Mar (722) 213,038 Apr (722) 213,038 May (722) 213,038 Jun (663) 229,761 Jul (594) 253,909 Aug (528) 277,216 Sep ,101 (461) 300,463 Oct (461) 300,463 Nov (461) 300,463 Dec (461) 300,463 ASR Well No. 32 Injection Recovery Mass Balance Date Volume TIN TDS Volume TIN TDS Storage TIN TDS (AF) (mg/l) (mg/l) (AF) (mg/l) (mg/l) (AF) (kg) (kg) Jan (1,417) ,736 Feb (1,417) ,736 Mar (1,417) ,736 Apr (1,417) ,736 May (1,417) ,736 Jun (1,337) ,450 Jul (1,200) ,186 Aug (1,186) ,594 Sep (1,047) ,889 Oct (1,192) ,889 Nov (1,220) ,889 Dec (1,220) ,889 ASR Well No. 33 Injection Recovery Mass Balance Date Volume TIN TDS Volume TIN TDS Storage TIN TDS (AF) (mg/l) (mg/l) (AF) (mg/l) (mg/l) (AF) (kg) (kg) Apr May (1) 0 0 Jun (10) 0 61 Jul (10) 0 61 Aug (14) 0 78 Sep (1) 6 2,246 Oct (1) 6 2,246 Nov (17) 6 2,246 Dec (18) 6 2,246 The injected water is WFA-treated water, which meets CCR Title 22 drinking water standards. During 2Q11, WFA-treated water was sampled for TDS and TIN (NO 3 -N + NO 2 -N, assuming no NH 3 -N in drinking water) on 04/19/11. Page 1 of 2

34 Table 6-1 MVWD ASR Project - TIN/TDS Mass Balance 3Q11 2Q11 1Q11 4Q11 Total Project (All Wells) Mass Balance Date Storage TIN TDS (AF) (kg) (kg) Jan-11 (1,717) (3,369) 220,026 Feb-11 (1,742) (3,369) 220,026 Mar-11 (1,781) (3,369) 220,026 Apr-11 (1,006) (3,083) 245,725 May-11 (1,094) (3,083) 245,725 Jun-11 (963) (2,948) 284,632 Jul-11 (697) (2,797) 337,305 Aug-11 (589) (2,674) 380,650 Sep-11 (247) (2,677) 382,960 Oct-11 (664) (2,677) 382,960 Nov-11 (787) (2,677) 382,960 Dec-11 (788) (2,677) 382,960 Well 4 TIN TDS Est. Prod Well 30 TIN TDS Est. Prod 5/7/ % 6/5/ % 5/9/ % 6/26/ % 5/12/ % 5/27/ % 6/6/ % Page 2 of 2

35 San Gabriel Mountains Main Map Features Recharge Basins in the Recycled Water Groundwater Recharge Program (Recycled Water not initiated) College Heights Upland Montclair Brooks Street San Antonio Ck Central Ave Holt Blvd Euclid Ave!"#$ 210 7th & 8th Street Ely Riverside Drive Haven Ave Turner Mission Blvd Lower Day Day Creek!"#$ 15 Etiwanda Debris Basin Etiwanda Ave East Etiwanda Creek San Sevaine Creek Victoria Banana Hickory Jurupa Declez San Sevaine Foothill Blvd RP3 Jurupa Mountains!"#$ 10 Recharge Basins in the Recycled Water Groundwater Recharge Program (Recycled Water initiated) Non-program basins Rivers and Streams Chino Hills }þ 71 Chino Ck Grove Cucamonga Creek Limonite Avenue Bellegrave Avenue }þ 60 Santa Missio Ana LA Los Angeles Orange Santa Ana San Bernardino San Bernardino Riverside Miles Kilometers Chino Basin Recycled Water Groundwater Recharge Programs Basin Locations Figure 1-1

36 Main Map Features!A Existing Monitoring Well Foothill Blvd Footh "Other Wells" Rivers/Streams/Creeks Etiwanda Ave Arrow Hwy Recharge Basins Banana Basin!A Ontario Well 20 %&'( 15 Day Creek Reliant Energy-East Well!A Etiwanda Conservation IEUA-BH- 1/2 & 2/2 East Etiwanda Creek Hickory Basin San Sevaine Creek!A!A!A Cal Speedway 2!A!A Fontana Water Company-F37A Cal Speedway- Infield Well San Bernardino Ave Cherry Ave LA San Bernardino %&'( 10 Los Angeles San Bernardino Santa Ana Riverside Monitoring Well Network Hickory and Banana Basins Figure 2-1 Recycled Water Recharge Program μ 0 1,000 2,000 Feet Meters Orange

37 ARCHIBALD AVE Deer Creek!A!A!A HERMOSA AVE!A!A VINEYARD AVE Cucamonga Creek Main Map Features!A Existing Monitoring Well "Other Wells" Rivers/Streams/Creeks Recharge Basins IEUA-TRN-1/1 & 1/2 Turner Basins!A!A!A!A!A Ontario 19 IEUA-TRN-2/1 & 2/2 4TH ST!A!A HOLT BLVD %&'( 10!A Ontario 29!A Ontario 25 HAVEN AVE Monitoring Well Network Turner Basins Figure 2-2 Recycled Water Recharge Program μ 0 1,000 2,000 Feet Meters LA Los Angeles Orange Santa Ana San Bernardino San Bernardino Riverside

38 Main Map Features!A Existing Monitoring Well "Other Wells" Footbill Blvd Rivers/Streams/Creeks Recharge Basins ARROW HWY 8TH ST 7th & 8th Street Basin MOUNTAIN AVE 4TH ST San Antonio Water Company No.12!A!A!A Princeton Basin IEUA-8th 1/1 & 1/2!A!A IEUA-8th 2/1 & 2/2 West Cucamonga Creek Ontario 4!"#$ 10 VINEYARD AVE Cucamonga Creek!A!A!A!A LA San Bernardino HOLT BLVD Monitoring Well Network 7th and 8th Street Basin Figure 2-3 Recycled Water Recharge Program Ontario 35!A μ 0 1,000 2,000 Feet Meters !A Los Angeles Orange Santa Ana San Bernardino Riverside

39 GROVE AVE VINEYARD AVE BON VIEW AVE PHILADELPHIA ST West Cucamonga Creek E MISSION BLVD Ely Basin!A ARCHIBALD AVE Ely Basin MW-1 Philadelphia St. (Casing 3) Main Map Features!A Existing Monitoring Well "Other Wells" Rivers/Streams/Creeks Recharge Basins!A Bishop of San Bernardino!A Ely Basin MW-2 Walnut St. (Casing 2) Cucamonga Creek LA San Bernardino RIVERSIDE DR Riverside Drive Well (43840-CCW) Grove Basin Monitoring Well Network Ely Basins Figure 2-4 Recycled Water Recharge Program!A!A μ 0 1,000 2,000 Feet Meters Los Angeles Orange Santa Ana San Bernardino Riverside

40 Lincoln Ave TUDOR AVE P-30!A P-2!A P-4 P-10!A!A!A!A!A SILICON AVE ROSWELL AVE PIPELINE AVE Densmore St Hershey St 1st St RAMONA AVE East End Ave CANOGA ST STATE ST CLAIR ST EVART ST BANDERA ST BROOKS ST GRAND AVE ORCHARD ST FLORA ST San Antonio Creek Channel KINGSLEY ST HOLT BLVD Northeast End Ave IEUA-BRK-2/1 & 2/2 Brooks Street Basin IEUA-BRK-1/1 &1/2 KADOTA AVE Brooks MISSION BLVD P-17 HOWARD ST WESLEY AVE Mission Blvd Grand Ave Monitoring Well Network Brooks Street Basin Figure 2-5 Recycled Water Recharge Program μ 0 1,000 Feet Meters Main Map Features!A Existing Monitoring Well "Other" Wells Rivers/Streams/Creeks Recharge Basins Boundary LA San Bernardino San Bernardino Los Angeles Santa Ana Riverside Orange

41 San Sevaine Channel Valley Blvd Slover Ave 10!A Fontana Water Co. F23A Main Map Features!H JCSD Wells "Other Wells"!A Existing Monitoring Well Rivers/Streams/Creeks Mulberry Ave Cherry Ave Beech Ave Citrus Ave Recharge Basins Marlay Ave Jurupa Basin Jurupa Ave!A Offsite MW-1 Offsite MW-3!A IEUA RP-3 1/1 IEUA RP-3 1/2!A!A RP-3 Basin Jurupa Ave Mulberry Ave C herry Ave Declez Channel!A IEUA-Southridge JHS Philadelphia Ave JURUPA CO Well ID: !H!H IEUA DCZ-1 Country Village Rd!A Declez Basin LA San Bernardino JURUPA CO Well ID: !H!H Monitoring Well Network RP-3 Basin Figure 2-6 Recycled Water Recharge Program μ 0 1,000 2,000 Feet Meters Los Angeles Orange Santa Ana San Bernardino Riverside

42 Main Map Features SUMMIT AVE!. SS-1 San Sevaine Basin SS-2!.!. SS-3!.!. Unitex IRR Unitex-91090!. Existing Monitoring Well Rivers/Streams/Creeks Recharge Basins!"#$ 210 EAST AVE Victoria Basin!. VCT-1 Unitex-CalDOT!. CHERRY AVE SAN SEVAINE RD CVWS-39!.!. VCT-2 BASE LINE AV!"#$ 15!. CVWD-43 FOOTHILL BLVD LA Los Angeles San Bernardino San Bernardino Santa Ana Riverside Monitoring Well Network San Sevaine and Victoria Basin Figure 2-7 Recycled Water Recharge Program μ 0 1,000 2,000 Feet Meters Orange