Chino Basin Recycled Water Groundwater Recharge Program Quarterly Monitoring Report for January through March 2014

Transcription

1 Sylvie Lee, P.E. Manager of Planning & Environmental Compliance Peter Kavounas, P.E. General Manager May 15, 2014 Regional Water Quality Control Board, Santa Ana Region Attention: Mr. Kurt Berchtold 3737 Main Street, Suite 500 Riverside, California Subject: Chino Basin Recycled Water Groundwater Recharge Program Quarterly Monitoring Report for January through March 2014 Dear Mr. Berchtold, nland Empire Utilities Agency and Chino Basin Watermaster hereby submit the Quarterly Monitoring Report for the first quarter of 2014 (1Q14), January 1 through March 31, 2014, for the Chino Basin Recycled Water Groundwater Recharge Program. This document is submitted pursuant to requirements in Order No. R All required monitoring and reporting for the quarter are presented in the attached report. During 1Q14, the Groundwater Recharge Program was in compliance with all monitoring and reporting requirements as specified in the Order, with the exception of an exceedance of the 4-quarter running average for odor (secondary MCL). Chino Basin Watermaster hereby certifies that, during the period of January 1 through March 31, 2014, there was no reported pumping for drinking water purposes in the buffer zones extending 500 feet laterally and 6 months underground travel time from each of the recharge sites using recycled water, namely 8th Street, Banana, Brooks, Ely, Hickory, RP3, San Sevaine, Turner, and Victoria Basins. n point of fact, there are no domestic or municipal production wells in the buffer zones of the aforementioned recharge sites. DECLARATON certify under penalty of law that have personally examined and am familiar with the information submitted in this document and all attachments thereto; and that, based on my inquiry of the individuals immediately responsible for obtaining the information, believe that the information is true, accurate, and complete. am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment. Executed on the 15 th day of May 2014 in the Cities of Chino and Rancho Cucamonga. Sylvie Lee, P.E. Manager of Planning & Environmental Compliance Peter Kavounas, P.E. General Manager nland Empire Utilities Agency Chino Basin Watermaster P.O. Box San Bernardino Road Chino Hills, CA Rancho Cucamonga, CA

2 Chino Basin Recycled Water Groundwater Recharge Program Quarterly Monitoring Report January 1 through March 31, 2014 Prepared by: May 15, 2014

3 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program January 1 through March 31, 2014 Order No. R First Quarter of 2014 Table of Contents 1. ntroduction... 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... 6 i

4 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program January 1 through March 31, 2014 Order No. R First Quarter of 2014 LST 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 TN & 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 2-6 Diluent Water Monitoring: Stormwater 2-7 Summary of Wells in Groundwater Monitoring Networks 2-8 Groundwater Monitoring Well Results (Quarterly) 3-1 Diluent & Recycled Water Recharge Volumes 6-1 MVWD ASR Project - TNTDS Mass Balance LST OF FGURES 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 Basins 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 January 1 through March 31, 2014 Order No. R First Quarter of ntroduction nland Empire Utilities Agency (EUA), 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. The locations of the Chino Basin Groundwater Recharge Program Basins are presented in Figure 1-1. As a provision of this Order, EUA 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 first quarter of 2014 (1Q14). 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 for domestic water supply use from the buffer zone that extends 500 feet and 6-months underground travel time from the recharge basin(s) where recycled water is applied. 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 EUA 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 January 1 through March 31, 2014 Order No. R First Quarter of ) Groundwater Monitoring Program Requirement V.1. was modified by adding a sentence to the paragraph that allows EUA 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 V.B.3.b. has been modified and footnote No. 18 has been added to reflect that EUA 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 andor 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 1Q14 data. Recycled Water Specifications A.5 through A.9 in the Order 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 mgl is met at the lysimeters. n October 2013, the average of two consecutive TN sample results for the Banana Basin compliance lysimeter exceeded the 5 mgl limit. The CDPH and the Regional Board were both notified via regarding the exceedance. Recycled water deliveries were voluntarily suspended on November 14, A letter was sent to the CDPH and the Regional Board on December 11, 2013 requesting the relocation of the Banana Basin TN compliance point to the groundwater mound monitoring well, namely BH-12. This is the approved TN compliance point for Hickory Basin from a Regional Board letter dated July 29, At time of reporting, EUA has not yet received correspondence in acceptance of the proposal to relocate the Banana Basin TN compliance point. On March 26, 2014, recycled water deliveries to Banana Basin were resumed once TN results fell below 5 mgl for at least one week. No recycled water was delivered prior to this date during the 1Q14 reporting period. n the Order, compliance for constituents with primary 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,, and in the Order). EUA selected the turnout to NRG California South, LP (formerly Reliant Energy) to be representative of the system blend of recycled water used for recharge. The 4-quarter running average concentration data for 2Q13 through 1Q14 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 primary MCLs or secondary MCLs, only oil & grease does not require the 4-quarter running average for compliance determination. During 1Q14, there were no exceedances in the following categories: primary MCLs for inorganic chemicals, volatile organic compounds (VOCs), non-volatile synthetic organic chemicals (SOCs), radionuclides, and disinfection byproducts; action levels for lead and copper; secondary MCLs for required constituents, with the exception of odor; and oil and grease. Page 2

7 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program January 1 through March 31, 2014 Order No. R First Quarter of 2014 Odor has a secondary MCL of 3 Units in Recycled Water Specification A.3. During 3Q13 and 4Q13 the threshold odor was found to be 8 Units and 17 Units, respectively. This results in a 4-quarter running average value of 8 Units, causing the threshold odor to exceed the secondary MCL. This result will continue to impact the 4-quarter running average for 2Q14. The odor has been identified by Eaton Analytical (contract laboratory) as chlorine. Recycled water used for groundwater recharge must meet disinfected tertiary recycled water standards in accordance to Title 22. Sodium hypochlorite is used as the disinfection agent at the RP-1 and RP-4 water recycling facilities; hence, the smell of chlorine is prominent in recycled water and is therefore unavoidable. Order No. R allows compliance for secondary MCLs to be determined at the mound monitoring well. Based on the mound monitoring well data (Table 2-8a), threshold odor did not exceed 3 Units at any of the monitoring wells during 1Q14. Due to the volume of sample required for analyses, EUA has selected, and CDPH has approved, a recycled water sampling point along the distribution pipeline. EUA selected the turnout to NRG California South, LP (formerly Reliant Energy) to be representative of the system blend of recycled water used for recharge. Although NRG turnout is a suitable sampling location 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, the samples better represent the DBPs present in 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 1Q14 sampling for DBPs, EUA chose the 25-foot below ground surface lysimeter at the Brooks Basin as the compliance point. The Brooks Basin lysimeter was selected as the compliance point because the basin received consistent recycled water recharge and recycled water was present at the 25-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, for compliance determination of Recycled Water Specifications A.7, A.10, and A.11. EC is also measured and reported to assist in identifying the presence of recycled water at various depths in the vadose zone. Basin and lysimeter water quality results from 1Q14 are summarized in Table 2-5a. The table includes lysimeter data for 8 th Street, Banana, Brooks, Hickory, RP3, San Sevaine, and Victoria Basins. As indicated in Recycled Water Compliance Determination B.6 in the Order, some basins have implemented alternative monitoring plans for TOC and TN compliance for Recycled Water Specifications A.7, A.10, and A.11. Alternative TOC and TN monitoring plans have been approved for Turner, Ely, 8th Street, and Victoria Basins include sampling of recycled water at the NRG turnout and apply a correction factor for Soil Aquifer Treatment (SAT). The following correction factors were determined from each basin s start-up period findings: Turner 1 & 2: TOC reduction of 70 percent and TN reduction of 87 percent Turner 3 & 4: TOC reduction of 85 percent and TN reduction of 87 percent Ely Basins: TOC reduction of 76 percent and TN reduction of 52 percent 8 th Street Basin: TOC reduction of 59 percent and TN reduction of 75 percent San Sevaine 5: TOC reduction of 78 percent and TN reduction of 69 percent Victoria: TOC reduction of 78 percent and TN reduction of 82 percent Page 3

8 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program January 1 through March 31, 2014 Order No. R First Quarter of 2014 The TOC and TN values calculated based on the correction factors provided above are summarized in Table 2-5b. The Brooks and RP3 Basins have also 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-11 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-11 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. f 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. On July 29, 2013, the Regional Board approved the relocation of Hickory Basin TN compliance point from HKYE-LYS-25 to groundwater mound monitoring well, BH-12. The TN monitoring data for BH- 12 can be found in Table 2-5b. C. Diluent Water For 1Q14, diluent water quality sampling of stormwater was conducted February 2014 at Turner 1 & 2, Turner 3 & 4, and Ely Basins and March 2014 at Lower Day and Montclair Basins. Table 2-6 lists the results of the local runoff 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 (1 st and 4 th quarters) and local runoff is sampled during the dry season (2 nd and 3 rd quarters). 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,,, and V of the Diluent Water Monitoring requirement.3 of the MRP. D. Groundwater Monitoring Wells During 1Q14, 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 six 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 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 seven 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 six wells. The wells in the monitoring well networks for Hickory and Banana, Turner, 8 th Street, Ely, Brooks, RP3, and San Sevaine and 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 monitoring are presented in Table 2-8. 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 1Q14 analyses results which exceeded primary or secondary MCLs Page 4

9 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program January 1 through March 31, 2014 Order No. R First Quarter of 2014 are shown in the tables in bold italic font. Of note are the analyses for the following wells and constituents: Turbidity exceeding the secondary MCL of 5 NTU was observed in two monitoring wells, namely: BRK-21 and VCT-11. Additionally, ph exceeding the secondary MCL of 8.5 was observed at Ontario Well No. 20 and Ontario Well No. 38 with field readings of 8.6 at both sites. TDS and EC were higher than their secondary MCLs of 500 mgl and 900 µmhoscm, respectively, in Alcoa MW3 and Ely MW2 (Walnut). Bishop of San Bernardino Corporation well slightly exceeded the TDS secondary MCL. The wells south of the Ely Basins and near the RP3 Basins are located in areas where the TDS and EC concentrations in groundwater are elevated; in the RP3 Basins area, TDS is about 750 mgl and EC is about 1,000 µmhoscm, and south of the Ely Basins, TDS is about 500 mgl and EC is about 750 µmhoscm. Color exceeded the secondary MCL of 15 units in monitoring well BRK-21. Dissolved manganese was above the secondary MCL of 50 µgl at RP3-12. Recycled water manganese concentrations are generally less than 20 µgl. Historical stormwater manganese analyses have been observed to fall within the range of 5 to 150 µgl. Some monitoring wells in the Banana & Hickory, RP3, Brooks, and Ely monitoring networks have NO 3 -N concentrations above the primary MCL of 10 mgl. These higher levels are characteristic of groundwater quality in the local area where historically the NO 3 -N concentrations ranges from mgl. No notifications were made to the CDPH as these areas have been previously identified to have monitoring wells with high NO 3 -N concentrations. 3. Recharge Operations EUA s Groundwater Recharge Coordinator recorded the daily volumes of water routed to all basins. The 8 th Street, Banana, Brooks, 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, andor imported water) captured during 1Q14 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 and recharge operations. The RP3 Basins second closest downgradient monitoring well, Southridge JHS, pump experienced an electrical short during 2Q13. No samples were analyzed during 2Q13, 3Q13, 4Q13, and 1Q14. The well will be sampled once the pump is repaired. EUA issued a request for proposal to repair the well in 1Q14. The well pump was removed in early April 2014 and found to have internal corrosion and frayed external wiring. A new pump and motor are being ordered. Downhole videotaping indicates the well is constructed of 6-inch internal diameter louvered well screen from 100 to 200 feet and from 220 to 360 feet below the top of casing. The upper screen is above the April 7, 2014 water table of feet below the top of the casing. The lower louvers below the water table have significant biofouling and scale. EUA is developing a well rehabilitation schedule to be implemented prior to installing the new pump. 5. Certification of Non-Pumping in the Buffer Zones Watermaster has certified that there was no reported pumping of groundwater in 1Q14 for domestic or municipal use from the buffer zones that extend 500 feet and 6 months underground travel time from the 8 th Street, Banana, Brooks, Ely, Hickory, RP3, San Sevaine, Turner, and Victoria Basins. n fact, Page 5

10 Chino Basin Recycled Water Quarterly Monitoring Report: Groundwater Recharge Program January 1 through March 31, 2014 Order No. R First Quarter of 2014 there are no domestic or municipal production wells within the buffer zones of these aforementioned recharge sites. EUA 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 (TownshipRangeSection40-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 EUA. The maps and lists show townshiprangesection parcels (40-acre parcels) that abut recharge basins and their 500-foot buffers. f a proposed well falls within an abutting parcel, SBCDEHS will review the well location using maps of the basins and buffer zones. f 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 EUA for a prompt field review of the proposed well location. The field review may include contacting and having the well applicant identify the exact location of the proposed well casing. To conduct a detailed field review, SBCDEHS will contact and provide the EUA Groundwater Recharge Coordinator with a copy of the well permit application and a timeline for the completion of EUA s review. Following the review, EUA will notify SBCDEHS of its findings in writing. EUA will also notify the California Department of Public Health and the Regional Board of well permit applications that it recommends should 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 EUACBWM Phase Groundwater Recharge Order No. R and subsequent permit updates. n April 2007, MVWD, Watermaster, and EUA entered into an agreement to report the MVWD ASR project groundwater injectionrecovery volumes and TNTDS mass balance in the recharge program quarterly reports. nitial injection began in June n May 2008, MVWD discontinued groundwater injection at the ASR wells for an extended period of time. n June 2011, MVWD groundwater injection activities resumed at four ASR wells. MVWD continued injection of imported water through September No significant volume of imported water has been injected since September During the last four quarters (2Q13 through 1Q14), a total of 1 acre-foot of imported water was injected into the groundwater basin during facility tours for demonstration purposes. Table 6-1 summarizes the monthly volumes and TNTDS of injected and recovered water. The table also includes the mass balance of TNTDS from the injection-recovery cycles. Page 6

11 Turbidity 1,2,7 TOC NO 3 -N TN TN 3 ph 7 EC 7 TDS 3 Hardness Coliform 1,2,4 Turbidity 1,2,7 TOC NO 3 -N TN TN 3 ph 7 EC TDS 3 Hardness Coliform 1,2,4 Unit NTU mgl mgl mgl mgl unit µhmocm mgl mgl mpn100ml NTU mgl mgl mgl mgl unit µhmocm mgl mgl mpn100ml Limits 2;5; <pH<9 2.2;23;240 2;5; <pH<9 2.2;23; < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <2 Avg < <2 Min < <2 Max <2 Note: Table 2-1a Recycled Water Monitoring: RP-1 & RP-4 Effluent Water Quality for January 2014 (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 meetsexceeds 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 MPN100mL 7-day median; 23 MPN100mL in no more than 1 sample per month; 240 MPN100mL at any time. 3 TDS and TN 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 mgl 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 February 2014 (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 TN 3 ph 7 EC 7 TDS 3 Hardness Coliform 1,2,4 Turbidity 1,2,7 TOC NO 3 -N TN TN 3 ph 7 EC TDS 3 Hardness Coliform 1,2,4 Unit NTU mgl mgl mgl mgl unit µhmocm mgl mgl mpn100ml NTU mgl mgl mgl mgl unit µhmocm mgl mgl mpn100ml Limits 2;5; <pH<9 2.2;23;240 2;5; <pH<9 2.2;23; < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <2 Avg < <2 Min < <2 Max 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 meetsexceeds 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 MPN100mL 7-day median; 23 MPN100mL in no more than 1 sample per month; 240 MPN100mL at any time. 3 TDS and TN 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 mgl 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 TN 3 ph 7 EC 7 TDS 3 Hardness Coliform 1,2,4 Turbidity 1,2,7 TOC NO 3 -N TN TN 3 ph 7 EC TDS 3 Hardness Coliform 1,2,4 Unit NTU mgl mgl mgl mgl unit µhmocm mgl mgl mpn100ml NTU mgl mgl mgl mgl unit µhmocm mgl mgl mpn100ml Limits 2;5; <pH<9 2.2;23;240 2;5; <pH<9 2.2;23; < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < <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 meetsexceeds 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 MPN100mL 7-day median; 23 MPN100mL in no more than 1 sample per month; 240 MPN100mL at any time. 3 TDS and TN 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 mgl 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 March 2014 (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 TN & TDS (mgl) (Recycled Water Quality Specifications A.6) TN TDS Date Monthly 12-Mo. Run Avg. Monthly 12-Mo. Run Avg. Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Avg Min Max Limit Date source: EUA NPDES monthly self-monitoring report (MRP No. R ). TDS is calculated using the flow-weighted averages based on discharged effluent flows and recycled water flows. TN is calculated using the flow-weighted averages based on discharged effluent flows only. The data reported above will supersede any information submitted for previous quarters. Agency-wide TN & 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 2Q13 3Q13 4Q13 1Q14 norganic Chemicals 4Q Run. Avg. 1 Limit Unit Method Aluminum µgl EPA Antimony <1 <1 <1 <1 <1 6 µgl EPA Arsenic <2 <2 <2 <2 <2 10 µgl EPA Asbestos <0.7 <0.8 <1.9 <0.2 <1.9 7 MFL EPA Barium µgl EPA Beryllium <0.5 <0.5 <0.5 <0.5 <0.5 4 µgl EPA Cadmium <0.25 <0.25 <0.25 <0.25 < µgl EPA Chromium µgl EPA Cyanide 6 <5 <5 <5 <5 150 µgl SM 4500-CN E Fluoride mgl SM 4500-F C Mercury <0.05 <0.05 <0.05 <0.05 < µgl EPA Nickel µgl EPA Perchlorate <4 <4 <4 <4 <4 6 µgl EPA Selenium < µgl EPA Thallium <1 <1 <1 <1 <1 2 µgl EPA Volatile Organic Chemicals (VOCs) Benzene 1.0 <0.5 <1 <0.5 <1 1 µgl EPA Carbon Tetrachloride <0.5 <0.5 <0.5 <0.5 < µgl EPA ,2-Dichlorobenzene <0.5 <0.5 <1 <0.5 <1 600 µgl EPA ,4-Dichlorobenzene <0.5 <0.5 <1 <0.5 <1 5 µgl EPA ,1-Dichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 5 µgl EPA ,2-Dichloroethane <0.5 <0.5 <0.5 <0.5 < µgl EPA ,1-Dichloroethylene <0.5 <0.5 <1 <0.5 <1 6 µgl EPA cis-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 6 µgl EPA trans-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 < µgl EPA Dichloromethane <0.5 <0.5 <1 <0.5 <1 5 µgl EPA ,2-Dichloropropane <0.5 <0.5 <0.5 <0.5 <0.5 5 µgl EPA ,3-Dichloropropene <0.5 <0.5 <1 <0.5 <1 0.5 µgl EPA Ethylbenzene <0.5 <0.5 <1 <0.5 <1 300 µgl EPA Monochlorobenzene <0.5 <0.5 <1 <0.5 <1 70 µgl EPA Methyl-tert-butyl ether <0.5 <0.5 <0.5 <0.5 < µgl EPA Styrene <0.5 <0.5 <0.5 <0.5 < µgl EPA ,1,2,2-Tetrachloroethane <0.5 <0.5 <0.5 <0.5 <0.5 1 µgl EPA Tetrachloroethylene <0.5 <0.5 <1 <0.5 <1 5 µgl EPA Toluene <0.5 <0.5 <1 <0.5 <1 150 µgl EPA ,2,4-Trichlorobenzene <0.5 <0.5 <0.5 <0.5 <0.5 5 µgl EPA ,1,1-Trichloroethane <0.5 <0.5 <1 <0.5 <1 200 µgl EPA ,1,2-Trichloroethane <0.5 <0.5 <1 <0.5 <1 5 µgl EPA Trichloroethylene <0.5 <0.5 <1 <0.5 <1 5 µgl EPA Trichlorofluoromethane <0.5 <0.5 <2 <0.5 <2 150 µgl EPA ,1,2-Trichloro-1,2,2-Trifluoroethane <0.5 <0.5 <0.5 <0.5 < µgl EPA Vinyl Chloride <0.5 <0.5 <0.5 <0.5 < µgl EPA m,p-xylene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA o-xylene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Non-Volatile Synthetic Organic Chemicals (SOCs) Alachlor (Alanex) <0.1 <0.1 <0.1 <0.1 <0.1 2 µgl EPA 505 Atrazine <0.05 NA <0.5 <0.5 <0.5 1 µgl EPA Bentazon <0.5 <0.5 <0.5 <0.5 < µgl EPA Benzo(a)pyrene <0.02 NA <0.2 <0.2 < µgl EPA Carbofuran <0.5 <0.5 <0.5 <0.5 < µgl EPA Chlordane <0.1 <0.1 <0.1 <0.1 < µgl EPA 505 2,4-D <0.1 <0.1 <0.1 <0.1 < µgl EPA Dalapon <1 4 4 < µgl EPA Dibromochloropropane <0.01 <0.01 <0.01 <0.01 < µgl EPA Di(2-ethylhexyl)adipate <0.6 NA <0.5 <0.5 < µgl EPA Di(2-ethylhexyl)phthalate <0.6 NA <0.5 <0.5 <0.6 4 µgl EPA Dinoseb <0.2 <0.2 <0.2 <0.2 <0.2 7 µgl EPA Diquat <0.4 <0.4 <0.4 <0.4 < µgl EPA Endothall <5 <5 <5 <5 <5 100 µgl EPA Endrin <0.01 <0.01 < < µgl 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 2Q13 3Q13 4Q13 1Q14 4Q Run. Avg. 1 Limit Unit Method Ethylene Dibromide <0.01 <0.01 <0.01 <0.01 < µgl EPA Glyphosate <6 <6 <6 <6 <6 700 µgl EPA 547 Heptachlor <0.01 <0.01 <0.01 <0.01 < µgl EPA 505 Heptachlor Epoxide <0.01 <0.01 <0.01 <0.01 < µgl EPA 505 Hexachlorobenzene <0.05 NA <0.5 <0.5 <0.5 1 µgl EPA Hexachlorocyclopentadiene <0.05 NA <0.5 <0.5 < µgl EPA Lindane <0.01 <0.01 <0.01 <0.01 < µgl EPA 505 Methoxychlor <0.05 <0.05 <0.05 <0.05 < µgl EPA 505 Molinate <0.1 NA <0.5 <0.5 < µgl EPA Oxamyl <0.5 <0.5 <0.5 <0.5 < µgl EPA Pentachlorophenol <0.04 <0.04 <0.04 <0.04 < µgl EPA Picloram <0.1 <0.1 <0.1 <0.1 < µgl EPA PCB 1016 <0.08 <0.08 <0.08 <0.08 < µgl EPA 505 PCB 1221 <0.1 <0.1 <0.1 <0.1 < µgl EPA 505 PCB 1232 <0.1 <0.1 <0.1 <0.1 < µgl EPA 505 PCB 1242 <0.1 <0.1 <0.1 <0.1 < µgl EPA 505 PCB 1248 <0.1 <0.1 <0.1 <0.1 < µgl EPA 505 PCB 1254 <0.1 <0.1 <0.1 <0.1 < µgl EPA 505 PCB 1260 <0.1 <0.1 <0.1 <0.1 < µgl EPA 505 Simazine <0.05 NA <0.5 <0.5 <0.5 4 µgl EPA Thiobencarb <0.2 NA <0.5 <0.5 < µgl EPA Toxaphene <0.5 <0.5 <0.5 <0.5 <0.5 3 µgl EPA 505 2,3,7,8-TCDD (Dioxin) <5 <5 <5 <5 <5 30 pgl EPA ,4,5-TP (Silvex) <0.2 <0.2 <0.2 <0.2 < µgl EPA Action Level Chemicals Copper µgl EPA Lead <0.5 <0.5 <0.5 <0.5 < µgl EPA Radionuclides Combined Radium-226 and Radium 228 <0.31 <0.25 <0.12 <0.45 < pcil EPA Gross Alpha Particle Activity <2 5 <1 <3 <3 15 pcil EPA 900.0SM7110C Tritium <251 <215 <203 <233 <251 20,000 pcil EPA 906 Strontium-90 <0.80 <0.65 <0.33 <0.49 < pcil EPA 905 Gross Beta Particle Activity pcil EPA Uranium <0.7 <0.7 <0.7 <0.7 < pcil EPA Secondary Maximum Contaminant Level Chemicals Aluminum µgl EPA Copper µgl EPA Corrosivity 3 NR -0.3 (Non-Cor.) NR 0.9 (Non-Cor.) Non-Cor. Non-Cor. S SM 2330B Foaming Agents (MBAS) mgl S5540CEPA ron 3 NR 41 NR NR µgl EPA Manganese µgl EPA Methyl-tert-butyl ether (MTBE) 3 <0.5 <0.5 <0.5 <0.5 <0.5 5 µgl EPA Odor--Threshold TON SM 2150B Silver <0.25 <0.25 <0.25 <0.25 < µgl EPA Thiobencarb <0.2 NA <0.5 <0.5 <0.5 1 µgl EPA Zinc µgl EPA Miscellaneous Regulated Constituents Oil & Grease 4 <1 <1 <1 <1 <1 1 mgl EPA 1664 Bromate <5 <5 <5 <5 <5 10 µgl EPA Chlorite <0.01 <0.01 <0.01 <0.01 < mgl EPA Lysimeter Compliance Point Data BRK-LYS-25 2Q13 BRK-LYS-25 3Q13 Disinfection Byproducts BRK-LYS-25 4Q13 BRK-LYS-25 1Q14 Total Trihalomethanes (TTHMs) <4 <2 2 <2 <4 80 µgl EPA Total Haloacetic Acids (HAA5) <2 <2 <2 <2 <2 60 µgl S6251B NR: Not required this quarter NA: Not Analyzed. Two samples were collected during 4Q13 and the average reported 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 than 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 1Q14 Unit Method Constituent 1Q14 Unit Method Metals Pesticides Chromium () µgl EPA Aldrin NR µgl EPA 608 Volatile Organic Chemicals (VOCs) BHC, alpha isomer NR µgl EPA 608 Acrolein NR µgl EPA 624 BHC, beta isomer NR µgl EPA 608 Acrylonitrile NR µgl EPA 624 BHC, delta isomer NR µgl EPA 608 Bromoform 0.6 µgl EPA ,4'-DDT NR µgl EPA 608 Chlorodibromomethane 8 µgl EPA ,4'-DDE NR µgl EPA 608 Chloroethane <0.5 µgl EPA ,4'-DDD NR µgl EPA Chloroethylvinylether NR µgl EPA Dieldrin NR µgl EPA 608 Chloroform 27 µgl EPA Endosulfan NR µgl EPA 608 Dichlorobromomethane 20 µgl EPA Endosulfan NR µgl EPA 608 Methyl Bromide <1 µgl EPA Endosulfan Sulfate NR µgl EPA 608 Methyl Chloride <0.5 µgl EPA Unregulated Chemicals Acid Extractibles Endrin Aldehyde NR µgl EPA Chlorophenol NR µgl EPA 625 Chromium V 0.18 µgl EPA ,4-Dichlorophenol NR µgl EPA 625 Ethyl tertiary butyl ether <0.5 µgl EPA ,4-Dimethylphenol NR µgl EPA 625 Tertiary amyl methyl ether <0.5 µgl EPA Methyl-4,6-dinitrophenol NR µgl EPA 625 Chemicals w State Notification Levels 2 2,4-Dinitrophenol NR µgl EPA 625 Boron 0.2 mgl EPA Nitrophenol NR µgl EPA 625 n-butylbenzene <0.5 µgl EPA Nitrophenol NR µgl EPA 625 sec-butylbenzene <0.5 µgl EPA Chloro-3-methylphenol NR µgl EPA 625 tert-butylbenzene <0.5 µgl EPA Phenol NR µgl EPA 625 Carbon disulfide <0.5 µgl EPA ,4,6-Trichlorophenol NR µgl EPA 625 Chlorate NR µgl EPA BaseNeutral Extractibles 2-Chlorotoluene <0.5 µgl EPA Acenaphthene NR µgl EPA Chlorotoluene <0.5 µgl EPA Acenaphthylene NR µgl EPA 625 Diazinon NR µgl EPA Anthracene NR µgl EPA 625 Dichlorodifluoromethane (Freon 12) <0.5 µgl EPA Benzidine NR µgl EPA 625 1,4 - Dioxane <1 µgl EPA 522 Benzo(a)anthracene NR µgl EPA 625 Ethylene glycol NR mgl EPA 8015B Benzo(b)fluoranthene NR µgl EPA 625 Formaldehyde NR µgl EPA 556 Benzo(g,h,i)perylene NR µgl EPA 625 HMX NR µgl EPA 8330B Benzo(k)fluoranthene NR µgl EPA 625 sopropylbenzene <0.5 µgl EPA Bis(2-chloroethoxy)methane NR µgl EPA 625 Methyl isobutyl ketone (MBK) <2 µgl EPA Bis(2-chloroethyl)ether NR µgl EPA 625 N-Nitrosodiethylamine (NDEA) NR ngl EPA 521 Bis(2-chloroisopropyl)ether NR µgl EPA 625 N-nitrosodimethylamine (NDMA) 2.1 ngl EPA Bromophenyl phenyl ether NR µgl EPA 625 Propachlor NR µgl EPA Butyl benzyl phthalate NR µgl EPA 625 N-propylbenzene <0.5 µgl EPA Chloronaphthalene NR µgl EPA 625 RDX NR µgl EPA 8330B 4-Chlorophenyl phenyl ether NR µgl EPA 625 Tertiary butyl alcohol <2 µgl EPA Chrysene NR µgl EPA 625 1,2,3-Trichloropropane (1,2,3-TCP) <0.5 µgl EPA Dibenzo(a,h)anthracene NR µgl EPA 625 1,2,4 trimethylbenzene <0.5 µgl EPA ,3-Dichlorobenzene NR µgl EPA 625 1,3,5-trimethylbenzene <0.5 µgl EPA ,3-Dichlorobenzidine NR µgl EPA 625 2,4,6-Trinitrotoluene NR µgl EPA 8330B Diethyl phthalate NR µgl EPA 625 Vanadium 2 µgl EPA Dimethyl phthalate NR µgl EPA 625 Endocrine Disrupting Chemicals, Pharmaceuticals and Other Chemicals 2 Di-n-butyl phthalate NR µgl EPA 625 Acetominophen NR ngl LC-MS-MS 2,4-Dinitrotoluene NR µgl EPA 625 Bis Phenol A (BPA) NR ngl LC-MS-MS 2,6-Dinitrotoluene NR µgl EPA 625 Caffeine NR ngl LC-MS-MS Di-n-octyl phthalate NR µgl EPA 625 Carbamazepine NR ngl LC-MS-MS Azobenzene NR µgl EPA 625 DEET NR ngl LC-MS-MS Fluoranthene NR µgl EPA 625 Estradiol NR ngl LC-MS-MS Fluorene NR µgl EPA 625 Estrone NR ngl LC-MS-MS Hexachlorobutadiene NR µgl EPA 625 Ethinyl Estradiol - 17 alpha NR ngl LC-MS-MS Hexachlorocyclopentadiene NR µgl EPA 625 Fluoxetine NR ngl LC-MS-MS Hexachloroethane NR µgl EPA 625 Gemfibrozil NR ngl LC-MS-MS ndeno(1,2,3-cd)pyrene NR µgl EPA 625 buprofen NR ngl LC-MS-MS sophorone NR µgl EPA 625 opromide NR ngl LC-MS-MS Naphthalene NR µgl EPA 625 Progesterone NR ngl LC-MS-MS Nitrobenzene NR µgl EPA 625 Sucralose NR ngl LC-MS-MS N-Nitroso-di-n-propylamine NR µgl EPA 625 Sulfamethoxazole NR ngl LC-MS-MS N-Nitrosodiphenylamine NR µgl EPA 625 Testosterone NR ngl LC-MS-MS Phenanthrene NR µgl EPA 625 Triclosan NR ngl LC-MS-MS Pyrene NR µgl EPA 625 Trimethoprim NR ngl LC-MS-MS 1 Trivalent chromium is measured as total chromium 2 Chemicals with State Notification Levels, Nitrosamines, and EDC, Pharmaceuticals & Other Chemicals NR: Not Required (Annual Requirement) 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 * TN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mmddyy mgl mgl mgl mgl mgl mgl µmhocm 8TH-LYS < TH-LYS TH-LYS <0.2 < < TH-LYS <0.6 <0.2 <0.1 <0.5 < TH-LYS < <0.5 < TH-LYS <0.6 <0.2 <0.1 < Banana Basin Site Depth, bgs Date TOC TN * TN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mmddyy mgl mgl mgl mgl mgl mgl µmhocm BNA-LYS < BNA-LYS < BNA-LYS BNA-LYS BNA-LYS < BNA-LYS-25** <0.5 < BNA-LYS-25** < BNA-LYS-25** <0.5 < BNA-LYS-25** < BNA-LYS-25** <0.5 < BNA-LYS-25** <0.5 < BNA-LYS-25** <0.5 < BNA-LYS-25** <0.5 < BNA-LYS-25** <0.5 < BNA-LYS-25** BNA-LYS-25** <0.5 < BNA-LYS-25** < Brooks Basin Site Depth, bgs Date TOC TN * TN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mmddyy mgl mgl mgl mgl mgl mgl µmhocm BRK-LYS BRK-LYS BRK-LYS BRK-LYS-25** <0.2 < < BRK-LYS-25** < <0.5 < BRK-LYS-25** < < Hickory East Basin Site Depth, bgs Date TOC TN * TN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mmddyy mgl mgl mgl mgl mgl mgl µmhocm HKYE-LYS < HKYE-LYS < HKYE-LYS < HKYE-LYS < HKYE-LYS HKYE-LYS HKYE-LYS < HKYE-LYS HKYE-LYS < HKYE-LYS-25** < HKYE-LYS-25** < HKYE-LYS-25** < HKYE-LYS-25** < HKYE-LYS-25** < HKYE-LYS-25** < HKYE-LYS-25** HKYE-LYS-25** HKYE-LYS-25** < HKYE-LYS-25** <0.5 < HKYE-LYS-25** HKYE-LYS-25** <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 * TN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mmddyy mgl mgl mgl mgl mgl mgl µmhocm RP31-LYS RP31-LYS RP31-LYS < < RP31-LYS RP31-LYS RP31-LYS RP31-LYS RP31-LYS RP31-LYS RP31-LYS RP31-LYS < RP31-LYS-35** < RP31-LYS-35** <0.5 < RP31-LYS-35** <0.5 < RP31-LYS-35** <0.5 < RP31-LYS-35** < RP31-LYS-35** <0.5 < RP31-LYS-35** RP31-LYS-35** RP31-LYS-35** RP31-LYS-35** < RP31-LYS-35** <0.5 < San Sevaine Basin Site Depth, bgs Date TOC TN * TN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mmddyy mgl mgl mgl mgl mgl mgl µmhocm SS5-LYS < SS5-LYS < <0.5 < SS5-LYS < <0.5 < Victoria Basin Site Depth, bgs Date TOC TN * TN NO 3 -N TKN+NO 2 -N NO 2 -N EC Unit==> feet mmddyy mgl mgl mgl mgl mgl mgl µmhocm VCT-LYS < VCT-LYS VCT-LYS VCT-LYS <0.5 < VCT-LYS <0.5 < VCT-LYS <0.5 < Blank cells indicate that analysis was not run for a constituent on that particular date andor depth due to insufficient volume or data was invalidated after analysis. * f TN limit of 5 mgl 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. ** Compliance lysimeter for their respective basin. Some are part of alternative monitoring plan. Monitoring frequency may vary from weekly to monthly. Page 2 of 2

20 Table 2-5b Alternative Monitoring Plans Turner Basin Date RW Blend* RW Blend* Turner 1 & 2 Turner 3 & 4 Turner 1 & 2 Turner 3 & 4 mgl==> TOC TN TOC (70% reduction) TOC (85% reduction) TN (87% reduction) Ely Basin Date RP-1 RW RP-1 RW Ely 3 East Ely 3 East mgl==> TOC TN TOC (76% reduction) TN (52% reduction) Brooks Basin Date BRK-LYS-00 BRK-LYS-00 BRK-LYS-00 BRK-LYS-00 mgl==> TOC TN EC Date BRK-LYS-25 BRK-LYS-25 BRK-LYS-25 BRK-LYS-25 mgl==> TOC TN** EC < < Date BRK-11 BRK-11 BRK-11 BRK-11 mgl==> TOC** TN EC Cl RP3 Basin Date RP3-LYS-35 RP3-LYS-35 RP3-LYS-35 mgl==> TOC TN EC *Recycled water blend from RP-1 & RP-4 sampled at NRG Energy (formerly Reliant Energy) **BRK-LYS-25 is the compliance point for TN and BRK-11 is the compliance point for TOC. Page 1 of 2

21 Table 2-5b Alternative Monitoring Plans 8th Street Basin Date RW Blend* RW Blend* 8th Street 8th Street mgl==> TOC TN TOC (59% reduction) TN (75% reduction) San Sevaine 5 Basin Date RW Blend* RW Blend* San Sevaine 5 San Sevaine 5 mgl==> TOC TN TOC (78% reduction) TN (69% reduction) Victoria Basin Date RW Blend* RW Blend* Victoria Victoria mgl==> TOC TN TOC (78% reduction) TN (82% reduction) Hickory Basin Date BH-12** BH-12 mgl==> TN EC *Recycled water blend from RP-1 & RP-4 sampled at NRG California South, LP (formerly Reliant Energy) **TN compliance point for Hickory Basin (approved by RWQCB ) Page 2 of 2

22 Table 2-6 Diluent Water Monitoring*: Stormwater Constituent Cucamonga Turner Basins 1 & Deer Turner Basins 3 & W. Cucamonga Ely Basins Day Lower Day Basin San Antonio Montclair Basin Unit Method NO 2 -N 0.13 <0.02 <0.02 <0.02 <0.02 mgl EPA NO 3 -N mgl EPA TDS mgl SM 2540C Total Coliform mpn100ml SM 9221B Oil & Grease <1 <1 2 <1 <1 mgl EPA 1664A norganic Chemicals Aluminum µgl EPA Antimony <1 1 µgl EPA Arsenic <2 <2 <2 <2 <2 µgl EPA Asbestos <6.7 <4.0 <6.7 <6.7 <4.0 MFL EPA Barium µgl EPA Beryllium <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Cadmium <0.25 <0.25 <0.25 <0.25 <0.25 µgl EPA Chromium µgl EPA Cyanide <5 <5 <5 <5 <5 µgl ASTM D7284 Fluoride mgl SM 4500-F C Mercury <0.05 <0.05 <0.05 <0.05 <0.05 µgl EPA Nickel µgl EPA Perchlorate <4 <4 <4 <4 <4 µgl EPA 314 Selenium <2 <2 <2 <2 <2 µgl EPA Thallium <1 <1 <1 <1 <1 µgl EPA Volatile Organic Chemicals (VOCs) Benzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Carbon Tetrachloride <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,2-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,4-Dichlorobenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,1-Dichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,2-Dichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,1-Dichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA cis-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA trans-1,2-dichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Dichloromethane <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,2-Dichloropropane <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,3-Dichloropropene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Ethylbenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Chlorobenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Methyl Tert-butyl ether (MTBE) <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Styrene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,1,2,2-Tetrachloroethane <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Tetrachloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Toluene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,2,4-Trichlorobenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,1,1-Trichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,1,2-Trichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Trichloroethylene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Trichlorofluoromethane <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,1,2-Trichloro-1,2,2-Trifluoroethane <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Vinyl Chloride <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Total Xylenes <1 <1 <1 <1 <1 µgl EPA Non-Volatile Synthetic Organic Chemicals (SOCs) Alachlor (Alanex) <0.1 <0.1 <0.1 <0.1 <0.1 µgl EPA 505 Atrazine <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Bentazon <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Benzo(a)pyrene <0.2 <0.2 <0.2 <0.2 <0.2 µgl EPA Carbofuran <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Chlordane <0.1 <0.1 <0.1 <0.1 <0.1 µgl EPA 505 2,4-D <0.1 <0.1 <0.1 < µgl EPA Dalapon <1 <1 <1 <1 <1 µgl EPA Dibromochloropropane <0.01 <0.01 <0.01 <0.01 <0.01 µgl EPA Di(2-ethylhexyl)adipate <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Di(2-ethylhexyl)phthalate <0.5 <0.5 µgl EPA Dinoseb <0.2 <0.2 <0.2 <0.2 <0.2 µgl EPA Diquat <0.4 <0.4 <0.4 <0.4 <0.4 µgl EPA Endothall <5 <5 <5 <5 <5 µgl EPA Endrin <0.01 <0.01 <0.01 <0.01 <0.01 µgl EPA 505 Ethylene Dibromide <0.01 <0.01 <0.01 <0.01 <0.01 µgl EPA Glyphosate <6 <6 µgl EPA 547 Heptachlor <0.01 <0.01 <0.01 <0.01 <0.01 µgl EPA 505 Page 1 of 2

23 Constituent Cucamonga Turner Basins 1 & Table 2-6 Diluent Water Monitoring*: Stormwater Deer Turner Basins 3 & W. Cucamonga Ely Basins Day Lower Day Basin San Antonio Montclair Basin Unit Method Heptachlor Epoxide <0.01 <0.01 <0.01 <0.01 <0.01 µgl EPA 505 Hexachlorobenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Hexachlorocyclopentadiene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Lindane <0.01 <0.01 <0.01 <0.01 <0.01 µgl EPA 505 Methoxychlor <0.05 <0.05 <0.05 <0.05 <0.05 µgl EPA 505 Molinate <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Oxamyl <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Pentachlorophenol <0.04 < < µgl EPA Picloram <0.1 <0.1 <0.1 <0.1 <0.1 µgl EPA PCB 1016 <0.08 <0.08 <0.08 <0.08 <0.08 µgl EPA 505 PCB 1221 <0.1 <0.1 <0.1 <0.1 <0.1 µgl EPA 505 PCB 1232 <0.1 <0.1 <0.1 <0.1 <0.1 µgl EPA 505 PCB 1242 <0.1 <0.1 <0.1 <0.1 <0.1 µgl EPA 505 PCB 1248 <0.1 <0.1 <0.1 <0.1 <0.1 µgl EPA 505 PCB 1254 <0.1 <0.1 <0.1 <0.1 <0.1 µgl EPA 505 PCB 1260 <0.1 <0.1 <0.1 <0.1 <0.1 µgl EPA 505 Simazine <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Thiobencarb <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Toxaphene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA 505 2,3,7,8-TCDD (Dioxin) <1.98 <1.99 <2.01 <2.05 <1.97 pgl EPA ,4,5-TP (Silvex) <0.2 <0.2 <0.2 <0.2 <0.2 µgl EPA Disinfection Byproducts Total Trihalomethanes (TTHMs) <2 <2 <2 <2 <2 µgl EPA Total Haloacetic Acids (HAA5) <2 <2 <2 µgl SM 6251B Bromate <5 27 <5 <5 <5 µgl EPA Chlorite <0.01 <0.01 <0.01 <0.01 <0.01 mgl EPA Copper Action Level Chemicals µgl EPA Lead µgl EPA Radionuclides Combined Radium-226 & Radium 228 <0.964 <0.860 <0.721 <0.435 <0.732 pcil EPA Gross Alpha Particle Activity <3 <3 <3 8 <3 pcil EPA 900.0SM7110C Tritium < <225 <234 <230 pcil EPA Strontium-90 <0.883 <0.642 <0.949 <0.662 <0.507 pcil EPA Gross Beta Particle Activity <3 <3 <3 6 <3 pcil EPA Uranium <0.7 <0.7 < pcil EPA Unregulated Chemicals Chromium V µgl EPA Ethyl tertiary butyl ether <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Tertiary amyl methyl ether <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Chemicals w State Notification Levels Boron 0.1 <0.1 <0.1 <0.1 <0.1 mgl EPA n-butylbenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA sec-butylbenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA tert-butylbenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Carbon disulfide <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Chlorotoluene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Chlorotoluene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Dichlorodifluoromethane (Freon 12) <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,4 - Dioxane <1 <1 <1 <1 <1 µgl EPA 522 sopropylbenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Methyl isobutyl ketone (MBK) <2 <2 <2 <2 <2 µgl EPA N-nitrosodimethylamine (NDMA) <2 <2 <2 <2 <2 ngl EPA 521 N-propylbenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,2,3-Trichloropropane (1,2,3-TCP) <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,2,4 trimethylbenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA ,3,5-trimethylbenzene <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Vanadium µgl EPA Secondary Maximum Contaminant Level Chemicals Aluminum µgl EPA Corrosivity S SM 2330B Foaming Agents (MBAS) < mgl SM 5540CEPA ron µgl EPA Manganese µgl EPA Odor--Threshold TON SM 2150B Silver 6.61 <0.25 <0.25 <0.25 <0.25 µgl EPA Thiobencarb <0.5 <0.5 <0.5 <0.5 <0.5 µgl EPA Zinc µgl EPA * Diluent monitoring is monitored per the schedule identified in the CDPH-approved Diluent Water Monitoring Plan Page 2 of 2

24 BASN CBWM_D OWNERLOCAL 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 SEPARATON DSTANCE (feet) SCREENED NTERVAL(S) (feet bgs) CASNG DAMETER (inches) STATUS Fontana Water Company - F37a 2240 upgradient Active Municipal California Speedway - nfield Well 2070 downgradient NA NA Active ndustrial California Speedway downgradient , , & Active ndustrial Reliant Energy - East Well 4070 downgradient , , , , & Active ndustrial City Of Ontario downgradient NA 20 Active Municipal nland Empire Utilities Agency - BH downgradient Active Monitoring nland Empire Utilities Agency - BH downgradient Active Monitoring City Of Ontario crossgradient nactive Municipal City Of Ontario downgradient Active Municipal City of Ontario - 38* 4600 crossgradient Active Municipal nland Empire Utilities Agency - TRN downgradient Active Monitoring nland Empire Utilities Agency - TRN downgradient Active Monitoring nland Empire Utilities Agency - TRN downgradient Active Monitoring nland Empire Utilities Agency - TRN 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 nland Empire Utilities Agency - DCZ-1 50 downgradient Active Monitoring -- nland Empire Utilities Agency - D downgradient NA Monitoring Fontana Water Company - F23a 7900 upgradient Active Municipal nland 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 nland Empire Utilities Agency - RP downgradient Active Monitoring nland Empire Utilities Agency - RP downgradient Active Monitoring Not currently planned for recharge San Antonio Water Company No downgradient , , , & nactive Municipal City of Ontario No downgradient nactive Municipal -- City of Ontario No downgradient Not Yet Constructed NA NA Municipal City of Ontario No downgradient Active Municipal nland Empire Utilities Agency - 8TH downgradient Active Monitoring nland Empire Utilities Agency - 8TH downgradient Active Monitoring nland Empire Utilities Agency - 8TH downgradient Active Monitoring nland Empire Utilities Agency - 8TH downgradient Active Monitoring City of Pomona P downgradient Active Municipal City of Pomona P downgradient , & NA nactive Municipal City of Pomona P crossgradient nactive Municipal City of Pomona P downgradient NA NA Active Municipal City of Pomona P downgradient nactive Municipal nland Empire Utilities Agency - BRK downgradient Active Monitoring nland Empire Utilities Agency - BRK downgradient Active Monitoring nland Empire Utilities Agency - BRK downgradient Active Monitoring nland Empire Utilities Agency - BRK downgradient Active Monitoring Cucamonga Valley Water District No downgradient , , , & , 20 Active Municipal nland Empire Utilities Agency - SS-11 and 12 ~ 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 nland Empire Utilities Agency - VCT-11 and 12 ~ downgradient Active Monitoring -- nland Empire Utilities Agency - VCT-11 and 12 ~ 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 rrigation Bishop Of San Bernardino Corp. - DOM 6500 downgradient NA NA Active Private Domestic Notes: NA = Data not available CBWM D = 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 2-8 Groundwater Monitoring Well Results (Quarterly) Sample Location Date TOC (mgl) Total Coliform (MPN100mL) ph EC (µmhocm) TDS (mgl) Al (µgl) Color (units) Cu (µgl) Corrosivity ndex (S) Foaming Agents (mgl) Fe (µgl) Mn (µgl) MTBE (µgl) Odor Threshold (TON) Ag (µgl) Thiobencarb (µgl) Turbidity (NTU) Zn (µgl) Cl (mgl) Hardness (mg CaCO 3L) Na (mgl) SO 4 (mgl) NH 3-N (mgl) NO 2-N (mgl) NO 3-N (mgl) Nitrogen, Total (mgl) TKN (mgl) Alkalinity (mg CaCO 3L) Dissolved Oxygen (mgl) Fontana Water Co. - F37a < <25 < <0.05 <15 <1 <0.5 1 <0.25 < < < California Speedway - nfield Well < <25 < < <0.5 <1 <0.25 < <0.1 < < Banana California Speedway <0.10 < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < < < & Hickory Reliant Energy - East Well <0.10 < <25 < <0.05 <15 <1 <0.5 <1 <0.25 < < < < Ontario Well No <0.10 < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < < BH-12* < <25 5 < <0.05 <15 16 <0.5 1 <0.25 < <0.1 < < Ontario Well No <0.10 < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < < < Ontario Well No <0.10 < <25 <3 < < <0.5 1 <0.25 < < < < Ontario Well No <0.10 < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < < < Turner T-12* < <25 5 < <0.05 <15 <1 <0.5 1 <0.25 < < < T-21* < <25 <3 0.6 <0.05 <15 <1 <0.5 2 <0.25 <0.2 <1 <0.1 < T < T-22* < <25 <3 0.7 <0.05 <15 <1 <0.5 2 <0.25 <0.2 <1 <0.1 < T < Fontana Water Co. - F23a <0.10 < <25 <3 < <0.05 <15 <1 <0.5 2 <0.25 < < < < Alcoa MW1* < <25 <3 < <0.05 <15 1 <0.5 1 <0.25 < < <0.1 < < Alcoa MW3* < <25 <3 < <0.05 <15 1 <0.5 1 <0.25 < < < < RP3 RP3-11* < < <0.05 <15 19 <0.5 2 <0.25 < < < < RP <0.5 RP < RP3-12* < <0.05 < <0.5 2 <0.25 < < < Ontario Well No <0.10 < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < < < TH-11* < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < th Street 8TH-12* < <25 5 < <0.05 <15 3 <0.5 1 <0.25 < < < < TH-21* < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < <0.1 < < TH-22* <25 <3 < <0.05 <15 <1 <0.5 <1 <0.25 < < <0.1 < < Pomona Well No < <25 < <0.05 <15 <1 <0.5 1 <0.25 < < < Pomona Well No < <25 < <0.05 <15 <1 <0.5 1 <0.25 < < < Pomona Well No < <25 <3 < <15 <1 <0.5 1 <0.25 < < < < Brooks BRK-11* < <25 <3 < <0.05 <15 2 <0.5 1 <0.25 < <0.1 < < BRK-12* < <25 <3 < <0.05 <15 <1 <0.5 1 <0.25 < < < BRK-21* < <25 20 < <0.05 <15 4 <0.5 <1 <0.25 < < <0.1 < < BRK-22* < <25 <3 < <0.05 <15 <1 <0.5 <1 <0.25 < < < < Ely Basin MW1 Philadelphia St.* <25 5 < < <0.5 2 <0.25 < < <0.1 < < Ely Basin MW1 Philadelphia St Ely Ely Basin MW2 Walnut St.* <25 < <15 38 <0.5 2 <0.25 < < < Riverside Well (43840-CWW) < <25 < <15 1 <0.5 2 <0.25 < <0.1 < Riverside Well (43840-CWW) Bishop of SB Corp. - DOM < <25 < <15 <1 <0.5 <1 <0.25 < < < < JCSD Well No < <25 < <15 <1 <0.5 1 <0.25 < <0.1 < < Declez** JCSD Well No < <25 < <0.05 <15 2 <0.5 1 <0.25 < < < < JCSD Well No <0.10 < <25 < <0.05 <15 <1 <0.5 1 <0.25 < < < < DCZ-11* < < <0.05 <15 2 <0.5 1 <0.25 < < < < SS-11* < <25 <3 < <0.05 <15 <1 <0.5 <1 <0.25 < < < < VCT-11* < <25 10 < <0.05 <15 2 <0.5 <1 <0.25 < <0.1 < < VCT-22* <25 <3 < <0.05 <15 <1 1 <0.25 < < < Victoria & San Sevaine VCT <0.5 CVWD Well No <0.10 < <25 < < <1 <0.5 <1 <0.25 < < < CVWD Well No <0.10 < <25 < < <0.5 <1 <0.25 < < < Unitex <25 <3 < <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 wells. The remaining wells report total recoverable metals values. Please note Fontana Water Co. Well No. 37A is a municipal well that has not been in production since May 2005 and is currently only used for monitoring. ** 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. Page 1 of 1

26 Table 3-1 Diluent & Recycled Water Recharge Volume (Acre-Feet) mported 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 Apr May Jun Q13 Total Jul Aug Sep Q13 Total Oct Nov Dec Q13 Total Jan Feb Mar Q14 Total Page 1 of 1

27 Table 6-1 MVWD ASR Project - TNTDS Mass Balance 1Q14 4Q13 3Q13 2Q13 1Q14 4Q13 3Q13 2Q13 1Q14 4Q13 3Q13 2Q13 ASR Well No. 4 njection Recovery Mass Balance Date Volume TN TDS Volume TN TDS Storage TN TDS (AF) (mgl) (mgl) (AF) (mgl) (mgl) (AF) (kg) (kg) Apr (504) (11,398) (269,820) May (542) (12,051) (287,087) Jun (565) (12,461) (297,919) Jul < (565) (12,461) (297,919) Aug < (565) (12,461) (297,919) Sep < (565) (12,462) (297,932) Oct < (565) (12,462) (297,932) Nov < (565) (12,462) (297,932) Dec < (566) (12,463) (297,960) Jan (566) (12,463) (297,960) Feb (566) (12,463) (297,960) Mar (566) (12,463) (297,960) ASR Well No. 30 njection Recovery Mass Balance Date Volume TN TDS Volume TN TDS Storage TN TDS (AF) (mgl) (mgl) (AF) (mgl) (mgl) (AF) (kg) (kg) Apr (2,779) 92,226 May (2,780) 92,223 Jun (2,781) 92,131 Jul < (2,792) 91,129 Aug < (2,801) 90,292 Sep < (2,805) 89,986 Oct < (2,805) 89,978 Nov < (2,805) 89,978 Dec < (2,805) 89,978 Jan (2,806) 89,837 Feb (2,846) 86,550 Mar (2,846) 86,550 ASR Well No. 32 njection Recovery Mass Balance Date Volume TN TDS Volume TN TDS Storage TN TDS (AF) (mgl) (mgl) (AF) (mgl) (mgl) (AF) (kg) (kg) Apr (1,691) (2,749) (184,399) May (1,893) (3,617) (268,723) Jun (2,154) (4,747) (378,465) Jul < (2,426) (5,921) (492,574) Aug < (2,699) (7,099) (606,963) Sep < (2,940) (8,139) (708,040) Oct < (3,218) (9,339) (824,556) Nov < (3,419) (10,209) (909,132) Dec < (3,524) (10,659) (952,833) Jan (3,606) (11,015) (987,407) Feb (3,606) (11,015) (987,407) Mar (3,606) (11,015) (987,407) The injected water is WFA-treated water, which meets CCR Title 22 drinking water standards. Page 1 of 2

28 Table 6-1 MVWD ASR Project - TNTDS Mass Balance 1Q14 4Q13 3Q13 2Q13 1Q14 4Q13 3Q13 2Q13 ASR Well No. 33 njection Recovery Mass Balance Date Volume TN TDS Volume TN TDS Storage TN TDS (AF) (mgl) (mgl) (AF) (mgl) (mgl) (AF) (kg) (kg) Apr (664) (2,998) (315,415) May (745) (3,350) (352,607) Jun (800) (3,588) (377,711) Jul < (937) (4,178) (440,094) Aug < (945) (4,210) (443,527) Sep < (956) (4,257) (448,511) Oct < (956) (4,257) (448,511) Nov < (994) (4,422) (465,947) Dec < (1,022) (4,544) (478,792) Jan (1,022) (4,544) (478,792) Feb (1,022) (4,544) (478,792) Mar (1,022) (4,544) (478,792) The injected water is WFA-treated water, which meets CCR Title 22 drinking water standards. Total Project (All Wells) Mass Balance Date Storage TN TDS (AF) (kg) (kg) Apr-13 (2,302) (19,924) (677,408) May-13 (2,623) (21,798) (816,194) Jun-13 (2,963) (23,576) (961,964) Jul-13 (3,375) (25,352) (1,139,457) Aug-13 (3,657) (26,571) (1,258,117) Sep-13 (3,910) (27,663) (1,364,497) Oct-13 (4,188) (28,862) (1,481,021) Nov-13 (4,427) (29,898) (1,583,033) Dec-13 (4,560) (30,470) (1,639,606) Jan-14 (4,643) (30,828) (1,674,322) Feb-14 (4,651) (30,867) (1,677,609) Mar-14 (4,651) (30,867) (1,677,609) Page 2 of 2

29 Chino Hills San Gabriel Mountains Chino Ck San Antonio Ck Central Ave ), 210 \, College Heights ", \ Upland,, i 7th & 8th Street Montclair " \ ~, J t ' Turner \ Holt Blvd Brooks Street \ ) t, t " - \! Ely -' Riverside Drive i t Grove \, ) \ 71 t ~,, '::::0." -, ~ Euclid Ave Miles \ \ ~, Kilometers 0 4 8, Cucamonga Creek,, Haven Ave Mission Blvd ) \ \ \;-'"' ;. \ '1\ ' :'1, \ '), j " \', (, Lower Day Day Creek 15 ) ) ( \, Etiwanda Debris Basin i i i,,j Etiwanda Ave East Etiwanda Creek San Sevaine Creek 1 ( ( Limonite Avenue, '; \\ ~\,, San Sevaine, Victoria Foothill Blvd Banana Hickory, i \ ', \ Jurupa Declez Bellegrave Avenue RP3 Jurupa Mountains Santa 60 Ana River 10 Mission Blvd Main Map Features Recharge Basins in the Recycled Water Groundwater Recharge Program Non-Program Basins Rivers and Streams LA Los Angeles Orange Santa Ana San Bernardino San Bernardino Riverside Chino Basin Recycled Water Groundwater Recharge Program Basin Locations Figure 1-1

30 Main Map Features Existing Monitoring Well Foothill Blvd Footh "Other Wells" RiversStreamsCreeks Etiwanda Ave Arrow Hwy Recharge Basins Banana Basin Ontario Well 20 %&'( 15 Day Creek Reliant Energy-East Well Etiwanda Conservation EUA-BH- 12 & 22 East Etiwanda Creek Hickory Basin San Sevaine Creek Cal Speedway 2 Fontana Water Company-F37A Cal Speedway- nfield 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

31 ARCHBALD AVE Deer Creek HERMOSA AVE VNEYARD AVE Cucamonga Creek Main Map Features Existing Monitoring Well "Other Wells" RiversStreamsCreeks Recharge Basins EUA-TRN-11 & 12 Turner Basins Ontario 19 EUA-TRN-21 & 22 4TH ST HOLT BLVD %&'( 10 Ontario 29 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

32 Main Map Features Existing Monitoring Well "Other Wells" Footbill Blvd RiversStreamsCreeks Recharge Basins ARROW HWY 8TH ST 7th & 8th Street Basin MOUNTAN AVE 4TH ST San Antonio Water Company No.12 Princeton Basin EUA-8th 11 & 12 EUA-8th 21 & 22 West Cucamonga Creek Ontario 4!"#$ 10 VNEYARD AVE Cucamonga Creek LA San Bernardino HOLT BLVD Monitoring Well Network 7th and 8th Street Basin Figure 2-3 Recycled Water Recharge Program Ontario 35 μ 0 1,000 2,000 Feet Meters Los Angeles Orange Santa Ana San Bernardino Riverside

33 GROVE AVE VNEYARD AVE BON VEW AVE PHLADELPHA ST West Cucamonga Creek E MSSON BLVD Ely Basin ARCHBALD AVE Ely Basin MW-1 Philadelphia St. (Casing 3) Main Map Features Existing Monitoring Well "Other Wells" RiversStreamsCreeks Recharge Basins Bishop of San Bernardino Ely Basin MW-2 Walnut St. (Casing 2) Cucamonga Creek LA San Bernardino RVERSDE DR Riverside Drive Well (43840-CCW) Grove Basin Monitoring Well Network Ely Basins Figure 2-4 Recycled Water Recharge Program μ 0 1,000 2,000 Feet Meters Los Angeles Orange Santa Ana San Bernardino Riverside

34 Lincoln Ave TUDOR AVE P-30 P-2 P-4 P-10 SLCON AVE ROSWELL AVE PPELNE AVE Densmore St Hershey St 1st St RAMONA AVE East End Ave CANOGA ST STATE ST CLAR ST EVART ST BANDERA ST BROOKS ST GRAND AVE ORCHARD ST FLORA ST San Antonio Creek Channel KNGSLEY ST HOLT BLVD Northeast End Ave EUA-BRK-21 & 22 Brooks Street Basin EUA-BRK-11 &12 KADOTA AVE Brooks MSSON 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 Existing Monitoring Well "Other" Wells RiversStreamsCreeks Recharge Basins Boundary LA San Bernardino San Bernardino Los Angeles Santa Ana Riverside Orange

35 San Sevaine Channel Valley Blvd Slover Ave 10 Fontana Water Co. F23A Main Map Features!H JCSD Wells "Other Wells" Existing Monitoring Well RiversStreamsCreeks Mulberry Ave Cherry Ave Beech Ave Citrus Ave Recharge Basins Marlay Ave Jurupa Basin Jurupa Ave Offsite MW-1 Offsite MW-3 EUA RP-3 11 EUA RP-3 12 RP-3 Basin Jurupa Ave Mulberry Ave C herry Ave Declez Channel EUA-Southridge JHS Philadelphia Ave JURUPA CO Well D: !H!H EUA DCZ-1 Country Village Rd Declez Basin LA San Bernardino JURUPA CO Well D: !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

36 Main Map Features SUMMT AVE!. SS-1 San Sevaine Basin SS-2!.!. SS-3!.!. Unitex RR Unitex-91090!. Existing Monitoring Well RiversStreamsCreeks Recharge Basins!"#$ 210 EAST AVE Victoria Basin!. VCT-1 Unitex-CalDOT!. CHERRY AVE SAN SEVANE RD CVWS-39!.!. VCT-2 BASE LNE AV!"#$ 15!. CVWD-43 FOOTHLL 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