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; JURMP Annual Report 2011-2012 NPDES Part 2; JURMP Annual Report 2011-2012 NPDES Part 2; 2012-09-01
Jurisdictional Urban Runoff management Plan Annual Report July 1, 2011 – June 30, 2012 Appendix 7 Appendix 7.1 Appendix 7.1 PREPARED FOR: CITY OF CARLSBAD Environmental Management Department 1635 Faraday Avenue Carlsbad, California 92008 PREPARED BY: D-MAX ENGINEERING, INC. 7220 Trade Street, Suite 119 San Diego, CA 92121 (858) 586-6600 D-MAX Engineering, Inc. Consultants in Water & Environmental Sciences 7220 Trade Street Suite 119 San Diego, CA 92121 (858) 586-6600 Fax (858) 586-6644 November 1, 2012 Project No. 201224W Mr. James Wood Senior Environmental Specialist City of Carlsbad Stormwater Protection Section 1635 Faraday Avenue Carlsbad, CA 92008 Re: 2012 Dry Weather Field Screening and Analytical Monitoring Program City of Carlsbad, California Dear Mr. Wood: Enclosed please find our final report for the City of Carlsbad 2012 Dry Weather Field Screening and Analytical Monitoring Program. This report presents the results of the monitoring program conducted in the City of Carlsbad during the 2012 dry weather season. The contents include field screening and analytical laboratory test results, analyses of the collected data, trash assessment data, and photographs of sampling locations. The report also presents the results of follow-up investigations conducted to identify the sources of pollutants detected during routine field screening. Review comments from the draft report submitted to the City have been incorporated into this final report. It has been our pleasure working with the City of Carlsbad on this project. Please do not hesitate to contact us if you have any questions regarding this report. Sincerely, D-MAX Engineering Inc. Arsalan Dadkhah, Ph.D., P.E. Project Manager Appendix 7.2 TABLE OF CONTENTS CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE I SECTION PAGE 1.0 INTRODUCTION .......................................................................................................................................... 1 1.1 PROGRAM OVERVIEW .................................................................................................................................... 1 1.2 REGULATORY BACKGROUND.......................................................................................................................... 1 1.3 HYDROLOGIC SETTING .................................................................................................................................. 1 1.4 PREVIOUS WORK .......................................................................................................................................... 2 1.5 REPORT OUTLINE .......................................................................................................................................... 4 2.0 SAMPLING LOCATIONS ............................................................................................................................ 5 3.0 FIELD AND LABORATORY ANALYTICAL METHODS ........................................................................... 13 3.1 FIELD SCREENING PROCEDURES AND METHODS .......................................................................................... 13 3.2 LABORATORY ANALYTICAL METHODS ........................................................................................................... 15 3.3 QUALITY ASSURANCE AND QUALITY CONTROL ............................................................................................. 15 3.3.1 Field Sampling and Analysis QA/QC ................................................................................................................. 15 3.3.2 Laboratory Sampling and Analysis QA/QC ........................................................................................................ 17 3.4 FOLLOW-UP ACTION LEVELS ........................................................................................................................ 17 4.0 FIELD SCREENING RESULTS ................................................................................................................. 20 4.1 QUALITATIVE OBSERVATIONS ...................................................................................................................... 20 4.2 FIELD ANALYTICAL RESULTS ........................................................................................................................ 27 5.0 LABORATORY ANALYTICAL RESULTS ................................................................................................. 42 5.1 SUMMARY ................................................................................................................................................... 42 6.0 DATA ANALYSIS ...................................................................................................................................... 46 6.1 2012 RESULTS ............................................................................................................................................ 46 6.2 PREVIOUS RESULTS .................................................................................................................................... 47 7.0 FOLLOW-UP INVESTIGATIONS............................................................................................................... 51 7.1 INVESTIGATION PROCEDURES ...................................................................................................................... 51 7.2 INVESTIGATION DISCUSSION ........................................................................................................................ 51 7.2.1 Typical Dry Weather Pollutant Sources ............................................................................................................. 51 7.2.2 Investigated Sites .............................................................................................................................................. 53 Site 1C-21 ................................................................................................................................................................... 53 Site 9B-38 ................................................................................................................................................................... 56 Site 19C-1 ................................................................................................................................................................... 56 Sites 27D-17 and 28C-70 ........................................................................................................................................... 56 Site 28C-73 ................................................................................................................................................................. 58 Site 29B-44 ................................................................................................................................................................. 58 Site 30A-38 ................................................................................................................................................................. 60 Site 36B-74 ................................................................................................................................................................. 60 Site 36B-95 ................................................................................................................................................................. 62 Site 37A-17 ................................................................................................................................................................. 62 Site 37A-70 ................................................................................................................................................................. 62 Site 37B-22 ................................................................................................................................................................. 62 Site 42C-92 ................................................................................................................................................................. 62 Appendix 7.2 TABLE OF CONTENTS (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE II Site 45G-13 ................................................................................................................................................................. 63 Site 48D-24 ................................................................................................................................................................. 63 Site 62B-4 ................................................................................................................................................................... 65 8.0 SUMMARY ................................................................................................................................................. 68 8.1 SUMMARY OF FIELD SCREENING AND LABORATORY ANALYSIS DATA ............................................................. 68 Agua Hedionda HA ..................................................................................................................................................... 68 Buena Vista HA ........................................................................................................................................................... 69 Encinas HA ................................................................................................................................................................. 69 San Marcos Creek HA ................................................................................................................................................ 71 9.0 REFERENCES ........................................................................................................................................... 72 TABLES 1-1 CITY OF CARLSBAD HYDROLOGIC AREAS 1-2 SUMMARY OF HISTORICAL DRY WEATHER SITES 2-1 2012 DRY WEATHER MONITORING SITES 3-1 FIELD ANALYTICAL METHODS 3-2 LABORATORY ANALYTICAL METHODS 3-3 FIELD ANALYSIS QA/QC RESULTS 3-4 ACTION LEVELS FOR FIELD SCREENING AND LABORATORY ANALYTES 4-1 FIELD OBSERVATIONS 4-2 FIELD ANALYSIS STATISTICAL SUMMARY 4-3 FIELD SCREENING RESULTS 5-1 CTR – CMC FOR DISSOLVED METALS 5-2 LABORATORY ANALYSES SUMMARY 5-3 LABORATORY ANALYTICAL RESULTS 6-1 2012 EXCEEDANCES AT A GLANCE 6-2 PERCENT OF SITES WITH EXCEEDANCES BY YEAR 7-1 SITE 1C-21 AMMONIA-N AND TURBIDITY UPSTREAM INVESTIGATION RESULTS 7-2 SITES 27D-17 AND 28C-70 AMMONIA-N AND NITRATE-N UPSTREAM INVESTIGATION RESULTS 7-3 SITE 29B-44 AMMONIA-N UPSTREAM INVESTIGATION RESULTS 7-4 SITE 35C-85 NITRATE-N FIELD TEST RESULTS 7-5 SITE 36B-74 DETERGENTS UPSTREAM INVESTIGATION RESULTS 7-6 SITE 48D-24 TURBIDITY UPSTREAM INVESTIGATION RESULTS 7-7 SITE 62B-4 PH AND TURBIDITY UPSTREAM INVESTIGATION RESULTS 8-1 AGUA HEDIONDA HA SUMMARY OF ACTION LEVEL EXCEEDANCES 8-2 AGUA HEDIONDA HYDROLOGIC AREA SUMMARY OF FOLLOW-UP INVESTIGATIONS 8-3 BUENA VISTA HYDROLOGIC AREA SUMMARY OF ACTION LEVEL EXCEEDANCES 8-4 BUENA VISTA HYDROLOGIC AREA SUMMARY OF FOLLOW-UP INVESTIGATIONS 8-5 ENCINAS HYDROLOGIC AREA SUMMARY OF ACTION LEVEL EXCEEDANCES 8-6 ENCINAS HYDROLOGIC AREA SUMMARY OF FOLLOW-UP INVESTIGATIONS 8-7 SAN MARCOS CREEK HYDROLOGIC AREA SUMMARY OF ACTION LEVEL EXCEEDANCES 8-8 SAN MARCOS CREEK HYDROLOGIC AREA SUMMARY OF FOLLOW-UP INVESTIGATIONS A-1 TRASH ASSESSMENT RESULTS Appendix 7.2 TABLE OF CONTENTS (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE III FIGURES 7-1 SITE 1C-21 UPSTREAM INVESTIGATION MAP 7-2 SITES 27D-17 AND 28C-70 UPSTREAM INVESTIGATION MAP 7-3 SITE 29B-44 UPSTREAM INVESTIGATION MAP 7-4 SITE 36B-74 UPSTREAM INVESTIGATION MAP 7-5 SITE 48D-24 UPSTREAM INVESTIGATION MAP 7-6 SITE 62B-4 UPSTREAM INVESTIGATION MAP A CITY OF CARLSBAD DRY WEATHER MONITORING SITES B WATERSHED MAP OF THE CARLSBAD AREA, BROKEN INTO HYDROLOGIC SUBAREAS A-1 TRASH ASSESSMENT MAP – NORTH CITY A-2 TRASH ASSESSMENT MAP – CENTRAL CITY A-3 TRASH ASSESSMENT MAP – SOUTH CITY GRAPHICAL DATA 4-1 FLOW 4-2 TEMPERATURE 4-3 PH 4-4 TURBIDITY 4-5 CONDUCTIVITY 4-6 SURFACTANTS 4-7 AMMONIA-N 4-8 NITRATE-N 4-9 ORTHOPHOSPHATE-P 6-1 PERCENT OF SITES WITH FIELD CONSTITUENT EXCEEDANCES BY YEAR 6-2 PERCENT OF SITES WITH LABORATORY ANALYSIS EXCEEDANCES BY YEAR A-1 TRASH ASSESSMENT SUMMARY APPENDICES A TRASH ASSESSMENT B HISTORICAL DRY WEATHER DATA TABLES C PHOTOGRAPHS OF SAMPLING LOCATIONS D FIELD DATASHEETS AND TRASH ASSESSMENT FORMS E LABORATORY ANALYTICAL REPORTS Appendix 7.2 ACRONYMS AND ABBREVIATIONS CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE IV °C Degrees Celsius µg/L Micrograms per Liter Basin Plan Water Quality Control Plan for the San Diego Basin CFR Code of Federal Regulations City City of Carlsbad CMC Criterion Maximum Concentration Copermittees The 18 cities within San Diego County, the County of San Diego, the Port of San Diego, and the San Diego County Regional Airport Authority CTR California Toxics Rule CV Coefficient of Variance D-MAX D-MAX Engineering, Inc. Dry Weather Monitoring Program Dry Weather Field Screening and Analytical Monitoring Program E. coli Escherichia coli EC Electrical Conductivity EMA EnviroMatrix Analytical, Inc. EPA U. S. Environmental Protection Agency FS Functional Sensitivity gpm Gallons per Minute GPS Global Positioning System HA Hydrologic Area HSA Hydrologic Subarea HU Hydrologic Unit IC/ID Illicit Connection/Illegal Discharge LED Light-Emitting Diode MBAS Methylene Blue Active Substances mg/L Milligrams per Liter MPN/100 mL Most Probable Number (of colony-forming units) per 100 Milliliters MS4 mS/cm Municipal Separate Storm Sewer System Millisiemens per Centimeter Municipal Permit San Diego Regional Water Quality Control Board Order No. R9-2007-0001 na Not Analyzed nd Not Detected ns Not Sampled (not flowing) NTU Nephelometric Turbidity Unit PDL Practical Detection Limit ppb Parts per Billion QA/QC Quality Assurance/Quality Control RWQCB San Diego Regional Water Quality Control Board TDS Total Dissolved Solids Workgroup Dry Weather Monitoring Sub-workgroup WQO Water Quality Objective Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 1 1.0 INTRODUCTION 1.1 Program Overview The objective of the City of Carlsbad Dry Weather Field Screening and Analytical Monitoring Program (Dry Weather Monitoring Program) is to identify and eliminate illicit connections and illegal discharges (IC/IDs) to the municipal separate storm sewer system (MS4), reducing the negative impact of human activities on receiving water bodies. The Dry Weather Monitoring Program consists of the following components: • Field screening observations • Field analytical monitoring • Laboratory analytical monitoring • Trash assessments The data gathered from Dry Weather Monitoring is used to characterize discharges to the City of Carlsbad’s (City) MS4 and identify conveyances with elevated levels of pollutants in the flow. Follow-up investigations are conducted as needed to detect and eliminate the sources of these pollutants. The results from the current year’s Dry Weather Monitoring Program conducted by D-MAX Engineering, Inc. (D-MAX) are presented herein. 1.2 Regulatory Background In accordance with the San Diego Regional Water Quality Control Board Order No. R9-2007- 0001 (Municipal Permit), Copermittees are required to annually perform dry weather field screening of discharges into its storm water conveyance system. During the dry weather season, May 1 through September 30, selected locations along the MS4 are screened for field and/or laboratory analyses. This also includes recording field observations and estimating flow rates. The Municipal Permit necessitates that Copermittees conduct laboratory analyses for at least 25 percent of the visited sites with flowing or ponded water. If a sampling location is dry, meaning there is no flowing or ponded water, an alternate sampling station is selected. If the results of the field or laboratory analyses exceed specific action levels, investigations are required within two business days. 1.3 Hydrologic Setting The City of Carlsbad is located in the northern portion of the County of San Diego. The City is encompasses approximately 39 square miles, constituting about 19% of the Carlsbad Hydrologic Unit (HU) 904. The City is divided into five separate Hydrologic Areas (HAs). Land use within each HA determines the potential for generating both runoff and pollutants into receiving water bodies. Table 1-1 presents the five major HAs , the corresponding receiving water bodies that collect the City’s storm water , and the percent of the HA that is located within the City’s jurisdiction. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 2 TABLE 1-1 CITY OF CARLSBAD HYDROLOGIC AREAS Hydrologic Area Number Receiving Water Bodies % in City Jurisdiction Buena Vista Creek 904.2 Buena Vista Creek and Lagoon 19 Agua Hedionda 904.3 Agua Hedionda Creek and Lagoon 41 Encinas 904.4 Encinas Creek 100 San Marcos 904.5 Encinitas Creek, San Marcos Creek, Batiquitos Lagoon 29 Escondido Creek 904.6 Escondido Creek, San Elijo Lagoon <1 The following major receiving water bodies located within the jurisdiction of the City of Carlsbad have been included on the 2010 303(d) list for the following constituents: • Agua Hedionda Creek for Enterococci, fecal coliforms, manganese, phosphorus, total nitrogen, selenium, total dissolved solids (TDS), and toxicity • Buena Vista Creek for sediment toxicity and selenium • Buena Vista Lagoon for indicator bacteria, nutrients, and sedimentation/siltation • Encinitas Creek for selenium and toxicity • Escondido Creek for dichlorodiphenyltrichloroethane (DDT), Enterococci, fecal coliforms, manganese, phosphate, selenium, sulfates, TDS, total nitrogen, and toxicity • San Marcos Creek for dichlorodiphenyldichloroethylene (DDE), phosphorus, sediment toxicity, and selenium • San Elijo Lagoon for eutrophic, indicator bacteria, and sedimentation/siltation 1.4 Previous Work The City has conducted Dry Weather Monitoring programs since 1995. A summary of the number of sites sampled each year is presented in Table 1-2. Historical Dry Weather Monitoring data is included in Appendix B. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 3 TABLE 1-2 SUMMARY OF HISTORICAL DRY WEATHER SITES Year Number of Sites Screened1 Number of Flowing Sites Number of Ponded Sites Number of Dry Sites Number of Lab Analysis Sites2 1995 49 33 16 14 --- 1996 65 47 18 9 --- 1997 62 42 20 13 --- 1998 52 36 16 2 --- 1999 65 40 25 14 --- 2000 52 43 9 9 --- 2001 58 52 6 6 --- 2002 59 48 11 1 15 2003 60 54 6 1 15 2004 60 52 8 1 15 2005 60 55 5 1 15 2006 60 54 6 1 15 2007 60 54 6 1 15 2008 60 53 7 1 15 2009 57 57 5 3 15 2010 60 60 6 2 15 2011 60 60 4 4 15 Notes: 1For 1995-2008, Number of Sites Screened = Number Flowing + Number Ponded. 2Laboratory analysis commenced in 2002 as required by Regional Water Quality Control Board Order 2001-001. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 4 1.5 Report Outline Section 1, Introduction, includes a program overview, regulatory background, a discussion of the City’s hydrologic setting, a summary of previous dry weather monitoring, and the report outline. Section 2, Sampling Locations, describes the dry weather monitoring sites and site selection criteria. Section 3, Field and Laboratory Analytical Methods, includes field screening and laboratory analytical procedures and methods, quality assurance and control protocols, and follow-up action levels. Section 4, Field Screening Results, presents qualitative observations of the sampled monitoring sites and the field screening analytical results. Section 5, Laboratory Analytical Results, summarizes the laboratory analytical results. Section 6, Data Analysis, presents an analysis of field and laboratory data collected in 2012 and in previous years of monitoring. Section 7, Follow-up Investigations, details investigation procedures and the results of follow- up investigations undertaken to identify sources of action level exceedances detected at sampling locations. Section 8, Summary, provides a summary of the 2012 Dry Weather Monitoring Program results. Section 9, References Figure A City of Carlsbad Dry Weather Monitoring Sites Figure B Watershed Map of the Carlsbad Area, Broken into Hydrologic Subareas Appendix A Trash Assessment Appendix B Historical Dry Weather Monitoring Table Appendix C Photographs of Sampling Locations Appendix D Field Datasheets and Trash Assessment Forms Appendix E Laboratory Analytical Reports Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 5 2.0 SAMPLING LOCATIONS The City has designated 60 primary monitoring sites for the 2012 Dry Weather Monitoring Program. In accordance with the City’s updated Dry Weather Monitoring Program protocol, only sites with flowing water were sampled. When a sampling location did not have flowing water, the nearest upstream location with flowing water was sampled. If nearby upstream locations were dry or ponded, an alternate station was visited. Of the 60 primary monitoring sites visited, 52 sites had flowing water. This year, ten primary sites did not have flowing water. Sites where flowing water was not observed were replaced with alternate sites. Site 48A-165 was designated for laboratory analyses, and was replaced with alternate Site 30A-70. Overall, 72 Dry Weather Monitoring sites were visited and 59 samples were collected for routine field screening. Table 2-1, organized by HA, provides the site number, location, conveyance configuration, primary and secondary land uses, Hydrologic Subarea (HSA), and Global Positioning System (GPS) coordinates of the sampling locations that were visited. Photographs of sampling locations are included in Appendix C. A complete map of the City’s MS4 and sampling locations is included as Figure A, and the City’s HSAs are displayed as Figure B at the end of this report. Appendix 7.2 TABLE 2-1 2012 DRY WEATHER MONITORING SITES CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 6 Site Location Conveyance Primary Land Use Secondary Land Use Hydrologic Subarea Latitude Longitude Agua Hedionda HA 11B-46 East of Sierra Morena Avenue, south of Valewood Avenue Outlet Open Residential 904.31 33.16394 -117.31450 11B-48 South of Chestnut Avenue, east of Sierra Morena Avenue, next to electrical tower Outlet Open Residential 904.31 33.16580 -117.31476 11D-50 Southwest of the Pontiac Drive and Southampton Road intersection Manhole Residential None 904.31 33.15761 -117.30790 16C-61 East of railroad tracks, south of Chinquapin Avenue, outfall into Agua Hedionda Lagoon (southeast of parking lot) Outlet Residential Commercial 904.31 33.14604 -117.33806 17B-8* Fifty yards east of the La Portalada Drive and Tamarack Avenue intersection, on the south side of Tamarack Avenue Manhole Residential None 904.31 33.15575 -117.31023 17B-46 Fifty yards east of the La Portalada Drive and Tamarack Avenue intersection, on the north side of Tamarack Avenue Outlet Residential None 904.31 33.15580 -117.31047 17B-47 Northwest corner of Tamarack Avenue and Pontiac Avenue intersection Concrete Channel Residential Open 904.31 33.15648 -117.30700 17B-52* Two hundred feet east of El Camino Real and Kelly Drive intersection, south side of El Camino Real Catch Basin Commercial Residential 904.31 33.15221 -117.30947 17C-83 East side of Park Drive, south of Calavo Court Manhole Residential None 904.31 33.14811 -117.32523 17D-7* Kelly Drive and Hillside Drive intersection, in front of #4870, east side of Kelly Drive Manhole Residential None 904.31 33.14873 -117.31117 Appendix 7.2 TABLE 2-1 2012 DRY WEATHER MONITORING SITES (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 7 Site Location Conveyance Primary Land Use Secondary Land Use Hydrologic Subarea Latitude Longitude 17D-37 Northeast corner of the Kelly Drive and Park Drive intersection Concrete Channel Open Residential 904.31 33.14660 -117.31053 18D-6* South side of El Camino Real, west of the El Camino Real and Jackspar Street intersection Outlet Residential Open 904.31 33.14674 -117.29037 18D-33A Intersection of Don Arturo and Don Porifirio Drive (in gated community), north of the El Camino Real and Rancho Carlsbad Drive intersection Earthen Channel Residential Open 904.31 33.15163 -117.29086 19C-1 North of the horse stable on Sunny Creek Road, west of College Boulevard, north of El Camino Real Outlet Industrial Residential 904.31 33.14647 -117.28160 21C-14 Inside Encina Power Station, north end of the open channel, south of parking lot by entrance Outlet Commercial None 904.31 33.13816 -117.33578 22B-11 In front of 4850 Park Drive, near Valencia Avenue Manhole Residential None 904.31 33.14333 -117.31570 25D-2 North of Palomar Airport Road, approximately 500 feet east of El Fuerte Street, in sedimentation basin Natural Creek Open Commercial 904.31 33.13633 -117.25483 27B-47 Behind 5115 Avenida Encinas Manhole Commercial Industrial 904.31 33.13135 -117.33018 27B-75 Main line east of I-5, south of Cannon Road, west of the Car Country Carlsbad sign Outlet Commercial Agricultural 904.31 33.12989 -117.32631 29B-44 Behind 1812 Aston Avenue, northeast of the pond Outlet Commercial Industrial 904.31 33.13513 -117.28995 30A-38* Rutherford Road and Aston Avenue intersection, in front of 2110 Rutherford Road Manhole Industrial None 904.31 33.13243 -117.28416 31B-34 In front of 2858 Loker Avenue, east driveway Manhole Commercial Industrial 904.31 33.13274 -117.24831 Appendix 7.2 TABLE 2-1 2012 DRY WEATHER MONITORING SITES (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 8 Site Location Conveyance Primary Land Use Secondary Land Use Hydrologic Subarea Latitude Longitude Buena Vista HA 1C-21* Outfall at southwest side of Jefferson Street where it crosses Buena Vista Creek Outlet Commercial None 904.21 33.17903 -117.34094 1D-20 South bank of Buena Vista Creek, 50 feet west of El Camino Real Outlet Commercial Residential 904.21 33.18058 -117.32722 1D-21* Sixty feet west of the South Vista Way Bridge on the south side of Buena Vista Creek Outlet Commercial Residential 904.21 33.18033 -117.32909 5A-4 North side of Jefferson Street across from Hosp Grove Park Manhole Commercial Residential 904.21 33.17754 -117.34209 5A-14 South of Monroe Street and Marron Road intersection, west sidewalk of Monroe Street Manhole Residential Open 904.21 33.17632 -117.33721 6B-4* Ten yards west of the Concord and Vancouver Street intersection, north side of Vancouver Street Manhole Residential None 904.21 33.17385 -117.31451 6C-23 Southwest corner of the Carlsbad Village Drive and El Camino Real intersection Outlet Residential Commercial 904.21 33.17138 -117.32279 6C-34 Fifty yards north of El Camino Real and Carlsbad Village Drive intersection, on center divider Manhole Residential Commercial 904.21 33.17262 -117.32319 9B-7 Laguna Drive and State Street intersection, across from 2531 State Street Manhole Commercial Industrial 904.21 33.16496 -117.35319 9B-38 East side of State Street, south of the Carlsbad Boulevard and State Street intersection Outlet Residential Commercial 904.21 33.16566 -117.35380 Appendix 7.2 TABLE 2-1 2012 DRY WEATHER MONITORING SITES (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 9 Site Location Conveyance Primary Land Use Secondary Land Use Hydrologic Subarea Latitude Longitude Encinas HA 27D-17 Southwest corner of parking lot for 5451 and 5431 Avenida Encinas Earthen Channel Agricultural Commercial 904.40 33.12748 -117.32843 27D-31A Behind 5600 Avenida Encinas near railroad tracks Concrete Channel Commercial Industrial 904.40 33.12658 -117.32770 28C-70 East of I-5, in between 5617 and 5621 Paseo Del Norte, east side of concrete channel Outlet Commercial Agricultural 904.40 33.12541 -117.32361 28C-73 East of I-5, west of the Ken Grody Ford parking lot off Paseo Del Norte, east side of concrete channel Outlet Commercial Agricultural 904.40 33.12733 -117.32475 35A-12 West of 6030 Avenida Encinas, east of railroad tracks Outlet Commercial Industrial 904.40 33.11894 -117.32377 35C-11 In front of 801-802 Caminito Del Sol, east of the I-5 south of Paseo del Norte Manhole Residential None 904.40 33.11338 -117.31573 35C-51A Inside Encina Wastewater Plant Concrete Channel Industrial Commercial 904.40 33.11591 -117.32017 35C-85 North bank of Encinas Creek, underneath I-5 overpass; access through Wastewater Plant Outlet Industrial Commercial 904.40 33.11658 -117.31872 36B-4 Corner of Palomar Oaks Way and Camino Vida Roble, near 1911 Palomar Oaks Way Manhole Industrial Commercial 904.40 33.12359 -117.28981 36B-6 Thirty yards west of 1911 Palomar Oaks Way, in the canyon Outlet Industrial Commercial 904.40 33.12348 -117.29022 36B-43* East of the intersection of Palomar Airport Road and Palomar Oaks Way, on the north side of Palomar Airport Road Manhole Commercial None 904.40 33.12018 -117.28910 Appendix 7.2 TABLE 2-1 2012 DRY WEATHER MONITORING SITES (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 10 Site Location Conveyance Primary Land Use Secondary Land Use Hydrologic Subarea Latitude Longitude 36B-74* Behind 5860 Dryden Place, inside Callaway Golf Center, at the end of the private drive Manhole Commercial None 904.40 33.12344 -117.29171 36B-95 Ten yards north of 1925 Palomar Oaks Way, in the canyon Manhole Commercial Industrial 904.40 33.12234 -117.29120 37A-17 Camino Vida Roble, midway between Palomar Airport Road and Owens Avenue Manhole Commercial Industrial 904.40 33.12116 -117.28230 37A-70 Northeast of 1949 Palomar Oaks Way Concrete Channel Commercial Open 904.40 33.11928 -117.28614 37B-19 Between 2225 and 2265 Camino Vida Roble, in front of the post office Catch Basin Industrial Commercial 904.40 33.11908 -117.27237 37B-22 Northwest corner of the Yarrow Drive and Camino Vida Roble intersection Outlet Commercial Industrial 904.40 33.11929 -117.27370 37C-28 Across from 1979 Palomar Oaks Way Outlet Commercial Open 904.40 33.11917 -117.28233 37C-29 Behind 1979 Palomar Oaks Way Outlet Commercial Open 904.40 33.11781 -117.28245 San Marcos (Batiquitos) HA 41D-32 Northeast of the intersection of Buttercup Road and Seascape Drive Manhole Residential None 904.51 33.10616 -117.30573 42C-92 Batiquitos Drive, midway between Poinsettia Lane and Daisy Avenue Manhole Residential Commercial 904.51 33.10338 -117.30500 44B-45 Between 2526 and 2532 Unicornio Street Catch Basin Residential None 904.51 33.10813 -117.25156 45A-45 One hundred feet into the canyon near the El Fuerte Street and Chorlito Street intersection Outlet Residential Open 904.51 33.11273 -117.24472 45C-12 In front of 2927 Luciernaga Street Manhole Residential Open 904.51 33.10693 -117.24140 Appendix 7.2 TABLE 2-1 2012 DRY WEATHER MONITORING SITES (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 11 Site Location Conveyance Primary Land Use Secondary Land Use Hydrologic Subarea Latitude Longitude 45G-13 Thirty feet southwest of the Melrose Drive and Rancho Santa Fe Road intersection (large outlet) Outlet Commercial Residential 904.51 33.10535 -117.22556 46D-87 Thirty feet north of the northeast corner of the Carlsbad Boulevard and Avenida Encinas intersection, on the side of trail Manhole Open Residential 904.51 33.09203 -117.31379 47C-5 End of Gabbiano Lane on Batiquitos Lagoon Trail Outlet Residential Open 904.51 33.09331 -117.30123 47D-25 Batiquitos Drive, east of Golden Star Lane, north of street, outflow of basin Outlet Parks Residential 904.51 33.09331 -117.28984 48A-165 Northeast corner of the Batiquitos Drive and Aviara Drive intersection Manhole Residential Open 904.51 33.09983 -117.27900 48C-25 North of Batiquitos Drive, between Kingfish Lane and Spoonbill Lane Natural Creek Parks Residential 904.51 33.09426 -117.28201 48D-24 Debris basin outlet to Batiquitos Lagoon, southwest of the El Camino Real and Arenal Road intersection Outlet Residential Open 904.51 33.09457 -117.26947 49C-55* In the cul-de-sac at the end of Almaden Lane, east of Zamora Way Manhole Residential None 904.51 33.09288 -117.25748 49D-12 South of Vista Mariana, in La Costa Golf Course Outlet Residential None 904.51 33.09167 -117.25129 51B-19 In sediment basin at the southwest corner of Navigator Circle and Windrose Circle Outlet Residential Commercial 904.51 33.09095 -117.30800 55A-51 Northern edge of La Costa Canyon Park, in canyon, across from 3015 Pueblo Street Outlet Residential Parks 904.51 33.08949 -117.24261 55A-62 Southeast corner of La Costa Golf Course, behind 7525 Gibraltar Street Outlet Residential Open 904.51 33.08759 -117.24631 55C-25* Between 3106 and 3108 Azahar Place Catch Basin Residential None 904.51 33.08602 -117.24077 Appendix 7.2 TABLE 2-1 2012 DRY WEATHER MONITORING SITES (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 12 Site Location Conveyance Primary Land Use Secondary Land Use Hydrologic Subarea Latitude Longitude 58A-13 Thirty yards north of the El Camino Real and Levante Street intersection Outlet Residential Open 904.51 33.07963 -117.26602 59C-90 Five hundred feet south of the intersection of Camino De Los Coches and Rancho Santa Fe Road Outlet Residential None 904.51 33.07423 -117.23985 62B-4 Corte Pedro and Camino Alvaro intersection Manhole Residential None 904.51 33.06901 -117.24710 Notes: Denotes a laboratory sampling location *Alternate site that was visited during this year’s programAppendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 13 3.0 FIELD AND LABORATORY ANALYTICAL METHODS 3.1 Field Screening Procedures and Methods Field screening techniques consist of flow measurements, qualitative field observations, and quantitative field analyses of selected water quality parameters. Weather conditions, time since last rainfall, and the type of storm water conveyance are recorded as well. Specific observations and results of the field water quality analyses were documented on field datasheets, which also serve as a record of the field visit. Datasheets were completed for every site visit regardless of whether or not samples were collected. Check boxes on the datasheets indicate if the visit is for routine field screening, confirmation of an exceedance, or an IC/ID follow-up visit. A confirmation visit is the first revisit to the original site. An IC/ID follow-up visit includes any additional visits to the site, or its upstream areas, for further investigation. Datasheets from the 2012 Dry Weather Monitoring Program are included as Appendix D. Field screening and analyses were conducted according to the following procedures and methods: Qualitative Observations Qualitative field observations were made during each site visit. These observations include a general site assessment and description of water odor, clarity, the presence of floatable materials, visible deposits or stains, and organisms. Evidence of present or past IC/IDs to the storm drain system can also be discovered through careful field observations. Each field screening location was photographed to document site conditions. Photographs of each site visited are included in Appendix C. Flow Measurement Flow measurements can help estimate pollutant mass loading, prioritize storm drains for future investigation, and identify significant changes in discharge that may be indicative of an illegal discharge. Various field methods may have been used to estimate the flow rate. These include measuring the velocity, depth, and width of the flowing water; recording the amount of time required to fill a bottle of known volume with sample water; or, if measuring flow within a cylindrical pipe, measuring the pipe diameter as well as the depth and velocity of the flow. Inaccessible or low levels of flow may also be assessed visually or audibly, as conditions allow. Field Water Quality Analyses At each site with flowing water, water samples were collected and analyzed in the field for the following constituents: • Specific Conductance (Conductivity) • Temperature • pH • Turbidity • Nitrate-Nitrogen (Nitrate-N) • Ammonia-Nitrogen (Ammonia-N) • Orthophosphate-Phosphorus (Orthophosphate-P) • Detergents, measured as methylene blue active substances (MBAS) The methods used to perform the above field analyses, along with the reporting limit, range, and accuracy of each method, are listed in Table 3-1. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 14 TABLE 3-1 FIELD ANALYTICAL METHODS Parameter Method* Method Reporting Limit Range Accuracy Specific Conductance Hanna Instruments HI 991301 Portable pH/EC/TDS/Temperature Meter 0.01 mS/cm 0 – 20 mS/cm ± 2% of FS1 Temperature Hanna Instruments HI 991301 Portable pH/EC/TDS/Temperature Meter 0.1°C 0.0°C – 60.0°C ± 0.5°C pH Hanna Instruments HI 991301 Portable pH/EC/TDS/Temperature Meter 0.01 0.00 – 14.00 ± 0.01 Turbidity Hanna Instruments HI 93703 Portable Turbidity Meter 0.00 NTU 0.00 – 50.00 NTU and 50 – 1000 NTU ± 0.5 NTU or 5% of reading (whichever is greater) Ammonia-N CHEMetrics V-2000 Multi-Analyte LED Photometer – Ammonia 3 Vacu-vials® (K-1403) Salicylate method 0.20 mg/L** 0.20 mg/L – 3.00 mg/L*** Varies with measured concentration2 Nitrate-N CHEMetrics V-2000 Multi-Analyte LED Photometer – Nitrate 3 Vacu-vials® (K-6933) Cadmium reduction method3 1.13 mg/L** 1.13 mg/L – 113 mg/L*** ± 30% Ortho- phosphate-P CHEMetrics V-2000 Multi-Analyte LED Photometer – Phosphate 2 Vacu-vials® (K-8513) Stannous chloride method4 0.098 mg/L** 0.10 mg/L – 2.61 mg/L*** Varies with measured concentration2 Detergents CHEMetrics CHEMets Kit (K-9400) Methylene Blue method 0.13 mg/L 0.00 mg/L – 3.00 mg/L*** ± ½ standard color increment5 Notes: *Test method information taken from Hanna Instruments and CHEMetrics manuals, available online at www.hannainst.com and www.chemetrics.com. EC = electrical conductivity NTU = Nephelometric Turbidity Unit mS/cm = millisiemens per centimeter mg/L = milligrams per liter °C = degrees Celsius LED = light-emitting diode TDS = total dissolved solids 1 Functional sensitivity (FS) represents the lowest limit at which quantitative information is reliable. FS is estimated as the mean concentration for a spiked sample whose coefficient of variance (CV) is 20%. CV is the standard deviation divided by the mean. **Readings below the Practical Detection Limit (PDL), also known as the reporting limit, have an increased percent error; measurements are reported, but are flagged with “J” to indicate the value is below the PDL. PDL is defined as the lower limit of the stated test range. ***Extended ranges in chemical analyses can be achieved through dilutions. Accuracies decrease proportionally with further dilutions. 2 Percent error adjusts as follows: ±30% at PDL, ±20% for 25% of full range, and ±10% for 75% of full range. 3 This method determines the concentration of nitrate in mg/L NO3. To determine the amount of nitrate-N, the concentration of nitrogen must be adjusted for the presence of oxygen in the NO3 molecule. Therefore, the result is multiplied by a conversion factor of 0.226, the ratio of the molecular weight of N (14g/mol) to NO3 (62 g/mol). The PDL for nitrate is 5.0 mg/L; however, the PDL for nitrate-N is lower due to the conversion. 4 This method determines the concentration of orthophosphate in mg/L PO4. To determine the amount of orthophosphate-P, the concentration of phosphate must be adjusted for the presence of oxygen in the PO4 molecule. Oxygen is 67.4% of phosphate by mass but is not a plant nutrient in this form. Therefore, the result is multiplied by a conversion factor of 0.326, the ratio of the molecular weight of P (31g/mol) to PO4 (95 g/mol). The PDL for orthophosphate is 0.3 mg/L; however, the PDL for orthophosphate- P is lower due to the conversion. 5 Percent error adjusts as follows: ± 0.13 mg/L for the range of 0.0 to 1.0 mg/L, ± 0.25 mg/L for the range of 1.0 to 2.0 mg/L and ± 0.5 mg/L for the range of 2.0 to 3.0 mg/L. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 15 3.2 Laboratory Analytical Methods In accordance with the Municipal Permit, laboratory samples were collected at 15 sites, representing 25 percent of the routine dry weather monitoring sites. Samples were submitted to EnviroMatrix Analytical (EMA), Inc, a laboratory certified by the California Department of Health Services, for analysis of the following constituents: • Total hardness • Oil and grease • Diazinon • Chlorpyrifos • Dissolved cadmium • Dissolved copper • Dissolved lead • Dissolved zinc • Total coliform bacteria • Fecal coliform bacteria • Enterococcus bacteria The methods used to perform each of the above analyses along with method reporting limits and holding times are listed in Table 3-2. 3.3 Quality Assurance and Quality Control The Quality Assurance and Quality Control (QA/QC) Plan utilized for this project includes the U.S. Environmental Protection Agency (EPA) approved test methods for the field and laboratory analysis of water samples, calibration of test equipment, and pre- and post-rinsing of sample collection containers and test vials. Key components of the QA/QC Plan are described below. 3.3.1 Field Sampling and Analysis QA/QC The pH meters, turbidity meter, and conductivity meter were tested daily before field screening began. The pH meters were calibrated as needed with sodium/potassium phosphate, monobasic buffer solutions with pH values equal to 4.01 ± 0.02, 7.00 ± 0.02, and 10.01 ± 0.02 units. The glass electrode tube was kept moist to preserve the meter’s accuracy during fieldwork. The turbidity meter and conductivity meter were calibrated as needed using standard solutions. Field sample collection containers were rinsed first with distilled water and then with the sample water prior to sample collection. Upon completion of sampling and testing at each site, sample collection containers, test vials, and ion-sensitive electrodes were rinsed three times with distilled water and dried. Field test kit accuracy was assessed prior to the commencement of sampling. Each lot of ampoules produced by CHEMetrics was analyzed against standard solutions of known concentrations of ammonia-N, nitrate, orthophosphate, and detergents. The results of these tests are shown in Table 3-3. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 16 TABLE 3-2 LABORATORY ANALYTICAL METHODS Analyte Analytical Method Method Reporting Limit Method Detection Limit Maximum Holding Time1 Oil and Grease EPA 1664A 5 mg/L 5 mg/L 28 days Total Hardness EPA 200.7 10 mg/L 10 mg/L 14 days Dissolved Cadmium EPA 200.8 1 µg/L 0.2 µg/L 24 hours Dissolved Copper2 EPA 200.8 10 µg/L 1 µg/L 24 hours Dissolved Lead EPA 200.8 5 µg/L 1 µg/L 24 hours Dissolved Zinc2 EPA 200.8 20 µg/L 0.3 µg/L 24 hours Diazinon EPA 8141A 0.05 µg/L 0.04 µg/L 7 days Chlorpyrifos EPA 8141A 0.05 µg/L 0.04 µg/L 7 days Detergents (MBAS) SM 5540 C 0.5 mg/L 0.1 mg/L 48 hours Total Coliforms3 SM 9221 B, E 20 – 1,600,000 MPN/100 mL 20 MPN/100 mL 6 hours Fecal Coliforms3 SM 9221 B, E 20 – 160,000 MPN/100 mL 20 MPN/100 mL 6 hours Enterococci3 SM 9230 A, B 20 – 160,000 MPN/100 mL 20 MPN/100 mL 6 hours Escherichia coli (E. coli) 4 SM 9223 (IDEXX Colilert)5 10 – 2,419,600 MPN/100 mL 10 MPN/100 mL 6 hours Notes: µg/L = micrograms per liter MPN/100 mL = most probable number (of colony-forming units) per 100 milliliters 1 Maximum Holding Time values listed apply to samples collected and preserved in accordance with the quality assurance and quality control procedures listed in Section 3.3.2. 2 The reporting limit will always be adjusted depending on the dilution factor used for quantifying the actual results. As the dilution factor increases, the reporting limit listed in the results from EMA will also increase based on the calculation made with EMA’s data system. However, the lowest quantifiable number or reporting limit would still be 10 µg/L for dissolved copper and 20 µg/L for dissolved zinc. 3 For D-MAX’s Dry Weather Monitoring Program, EMA performs standard dilutions for total coliforms to quantify from 20-1,600,000 MPN/100 mL. For fecal coliforms and Enterococci, EMA performs standard dilutions to quantify from 20-160,000 MPN/100 mL. During the analysis and interpretation of the results, the number of tubes used to quantify the sample must fit the MPN index table from Standard Method 9221. The dilution set used will determine the detection limit. A standard dilution analysis is set up with 15 tubes at different concentrations. The reporting limit will always be adjusted depending on the dilution factor used for quantifying the actual results based on the MPN table. If the result for the analysis was less than 16,000 MPN/100 mL, the reporting limit will always be 20, and the dilution factor will be 10. As the dilution factor goes up, the reporting limit listed in the results from EMA will also go up based on the calculation made with EMA’s data system. However, the lowest quantifiable number or reporting limit would still be 20 based on the setup of standard tubes for the sample. 4 Number of fecal coliforms is derived from number of E. coli through the following formula: Fecal Coliforms = E. coli / 0.85. The converted fecal coliform count, not the number of E. coli, is reported in this report’s data tables. 5 IDEXX Colilert test is performed for confirmation and upstream investigations only. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 17 TABLE 3-3 FIELD ANALYSIS QA/QC RESULTS Analyte Known Concentration (mg/L) Acceptable Range* (mg/L) Lot Number Date Field Test Kit Results (mg/L) Ammonia-N 0.82 0.66 - 0.98 78724/12 4/30/2012 0.919 79087/4 7/13/2012 0.882 79743/6 8/20/2012 0.883 Detergents (MBAS) 1.0 0.75 - 1.25 79024/79081/2 5/7/2012 1.0 79407/79393/12 7/13/2012 1.0 79699/79590/9 8/20/2012 1.0 Nitrate** 44.3 31.0 - 57.6 79074/2 4/30/2012 42.20 79474/2 7/13/2012 39.19 Orthophosphate** 6.13 5.52 - 6.74 78968/4 4/30/2012 5.609 79427/7 7/13/2012 5.570 79629/6 8/20/2012 5.616 Notes: * Acceptable range is calculated based on the error associated with the methods as listed in Table 3-1. ** Nitrate and orthophosphate are converted to nitrate-N and orthophosphate-P, respectively, when conducting standard field screening. This is accomplished by multiplying the results by 0.226 for nitrate and 0.326 for orthophosphate. To simplify the calibration process, the unconverted numbers are used when calibrating the instruments. 3.3.2 Laboratory Sampling and Analysis QA/QC Samples for laboratory analysis are collected concurrently with field samples and utilize the same sampling procedures. Pre-sterilized sample bottles are obtained from the laboratory and thus do not require rinsing with sample water prior to sample collection. After sample collection, all laboratory samples are kept in a cooler on ice until delivered to the lab. Strict chain of custody procedures are followed and samples are delivered and analyzed within the appropriate holding times listed in Table 3-2. Completed chain of custody forms are included in Appendix E. 3.4 Follow-up Action Levels Based on dry weather field screening results, immediate follow-up investigations are sometimes necessary to identify and eliminate pollutant sources. In order to determine whether an immediate source investigation was necessary, numeric action levels and best professional judgment (BPJ) were used to interpret the field screening results. If visual and/or analytical evidence of gross contamination was present at a site (e.g., substantial petroleum sheen, extremely high ammonia-N concentration, evidence of a sewage release, etc.), an immediate source identification investigation was initiated. For sites that exceed numeric action levels but were not perceived as an immediate threat to water quality, a confirmation visit was conducted within two business days. An upstream pollutant source investigation was typically conducted thereafter if elevated concentrations were found to persist and no sources could be identified in the immediate vicinity of the monitoring site. Pollutant source investigations were not completed where constituent values and site conditions were consistent with historical findings, and additional investigation was unnecessary to determine a source. If elevated levels of pollutants were detected by the laboratory analyses, a comprehensive follow-up pollutant source investigation was initiated within two business days of receiving the laboratory results. A discussion of follow-up investigations is included in Section 7. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 18 The following three methods were employed to determine whether immediate or comprehensive follow-up investigations were necessary: (1) Numeric Action Levels; (2) California Toxics Rule (CTR); and (3) Best Professional Judgment. The three approaches are described below and presented with associated constituents in Table 3-4. Numeric Action Levels Numeric action levels were used as the primary approach for interpreting pH, orthophosphate-P, nitrate-N, ammonia-N, detergents, oil and grease, diazinon, chlorpyrifos, total coliforms, fecal coliforms, and Enterococcus bacteria analytical results. Prior to the 2003 dry weather season, no standard action levels had been adopted for use throughout San Diego County. D-MAX calculated the current set of numeric action levels based on county-wide sampling data. These action levels have been used by all San Diego County Copermittees since the 2003 dry weather season. In 2010, D-MAX performed statistical analysis on county-wide data to update action levels for bacterial indicators. California Toxics Rule The CTR criterion maximum concentration (CMC) is a short term concentration limit in which aquatic life can be sustained. The CMC was used to determine appropriate action levels for dissolved trace metals, including cadmium, copper, lead, and zinc. The CTR equations, as provided in EPA Federal Register Doc. 40 Code of Federal Regulations (CFR) Part 131, were used to calculate benchmarks based on the total hardness of the sampled water, with the action levels increasing as hardness increases. More information on the CTR is available at: http://www.epa.gov/region09/water/ctr. Best Professional Judgment Best professional judgment was utilized as the primary approach for interpreting turbidity, water temperature, and conductivity and as a secondary approach for interpreting the results of all other field and laboratory analyses. Under BPJ, the need for a follow-up investigation was left to the discretion of the D-MAX field crew. BPJ may indicate that results which either exceeded certain action levels or were statistical outliers may be the result of natural or background factors. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 19 TABLE 3-4 ACTION LEVELS FOR FIELD SCREENING AND LABORATORY ANALYTES Field Screening Analytes Action Levels1 Source/ Notes Conductivity (mS/cm) BPJ Conductivity may be highly elevated in some regions due to high TDS, groundwater exfiltration to surface water, mineral dissolution, drought, and seawater intrusion. Normal source ID and discharge elimination work is not effective in these situations. BPJ is based on area background conditions to determine what would constitute an abnormal value. Values <0.75 may indicate excessive potable water discharge or flushing. Temperature (°C) BPJ BPJ takes into account season, air temperature, channel type, shading, etc. to determine what would constitute an abnormal value. pH <6.5 or >9.0 Basin Plan2, with allowance for elevated pH due to excessive photosynthesis. Elevated pH is especially problematic in combination with high ammonia. Turbidity (NTU) BPJ Water Quality Objectives relevant to inland surface waters are not available. BPJ takes into account channel type and substrate, weather, background levels, and most importantly visual observation (e.g. unusual colors and lack of clarity) and unusual odors. Ammonia-N (mg/L) 1.0 Based on Dry Weather Monitoring Sub-workgroup (Workgroup) experience. May also consider unionized ammonia fraction. Nitrate-N (mg/L) 10.0 Basin Plan and drinking water standards Orthophosphate-P (mg/L) 2.0 EPA Multi-sector General Permit Detergents (MBAS) (mg/L) 1.0 Basin Plan, with allowance based on Workgroup field experience and possible field reagent interferences. Laboratory Analytes Action Levels Source/ Notes Oil and Grease (mg/L) 15 EPA Multi-sector General Permit. If petroleum sheen is observed, the sample should be collected from the water surface. Visual observations may justify immediate investigation. Diazinon (µg/L) 0.5 Response to diazinon and chlorpyrifos levels above 0.5 µg/L should focus on education and outreach to potential dischargers in the target drainage basin. Highly elevated levels should be investigated aggressively as with other potential IC/IDs. Chlorpyrifos (µg/L) 0.5 Dissolved Cadmium (µg/L) CTR Use CTR, 1-hour criteria to determine appropriate action level for individual samples. Table provides benchmarks based on hardness and dissolved metals concentration. For example, at 300 mg/L hardness the following action levels would apply: Cd – 14 ppb; Cu – 38 ppb; Pb – 209 ppb; and Zn – 297 ppb. Dissolved Copper (µg/L) Dissolved Lead (µg/L) Dissolved Zinc (µg/L) Total Coliforms (MPN/100 mL) 130,000 Bacteria action levels were updated for implementation in 2010 by the Workgroup. Fecal Coliforms (MPN/100 mL) 13,000 Enterococci (MPN/100 mL) 7,000 Notes: 1 The referenced action levels should not be the sole criteria for initiating a source identification investigation. Dry weather monitoring data should be interpreted using a variety of available information, including within-site and between-site sample variability. 2 Basin Plan = Water Quality Control Plan for the San Diego Basin ppb = parts per billion Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 20 4.0 FIELD SCREENING RESULTS Sampling for the 2012 Dry Weather Monitoring Program was conducted during June and July 2012. Routine site visits were performed at 72 monitoring sites and field screening was performed at 59 of these sites. Field datasheets for all site visits are included in Appendix D. 4.1 Qualitative Observations Field screening was conducted at the sites where flowing water was observed. Qualitative observations were performed at all site visits and are summarized below. Results discussed below and presented in Table 4-1 include routine and confirmation data only. Light Conditions Light conditions were primarily sunny, with some overcast or partly cloudy weather. Odor The majority of sites had odorless water. Seven samples had water with a musty odor, and one site had water with a chemical smell. Color Water samples at most the sites were colorless. Thirteen samples had yellow-colored water. One sample was brown in color due to the suspension of fine sediment particles disturbed during sample collection. One site had white-colored water observed during a confirmation visit, which was most likely due to a construction waste discharge upstream of Site 30A-38. Clarity Most of the sites had clear water, and ten samples were slightly cloudy in appearance. The two samples mentioned above with a brown or white color were also opaque in appearance. Floatable Materials The majority of sites did not have floating materials on the water’s surface. Algae and bubbles were the most commonly observed floatable material at the remaining sites. Grass clippings were observed on the surface of the water at one site. Deposits Sediment, gravel, and/or fine particulates were noted at most sites. There were no sites with stains or oily deposits. Vegetation Sites lacking sunlight or soil had no vegetation, while open-aired conveyances with available rooting medium had normal vegetation. Most of the sites visited did not have vegetation, and no sites had limited or excessive vegetation. Biology The presence of organisms can indicate healthy water conditions. Algal growth often indicates that water flow is persistent at the site. Algae and insects were the most commonly observed organisms. Many of the sampling locations were host to other organisms such as birds, crayfish, fish, larvae, snails, tadpoles, and worms. Appendix 7.2 TABLE 4-1 FIELD OBSERVATIONS CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 21 Site Date Time Light Conditions Odor Color Clarity Floatables Deposits Vegetation Biology 1C-21 7/6/12 9:30 Overcast None Yellow Slightly Cloudy Trash Sediment, Fine Particulates Normal Insects 1C-21 7/9/12 15:20 Sunny None Yellow Slightly Cloudy None Sediment, Fine Particulates None None 1D-20 7/5/12 13:20 Overcast None None Clear Bubbles, Sheen, Trash, Foam Sediment, Fine Particulates Normal Insects 1D-21 7/5/12 14:20 Overcast None None Clear Trash Sediment Normal Algae 5A-4 8/9/12 10:45 Sunny ns ns ns ns Sediment, Gravel, Fine Particulates None None 5A-14 8/9/12 9:45 Sunny None None Clear None Fine Particulates None Snails 6B-4 8/13/12 11:50 Sunny None None Clear None None None None 6C-23 8/9/12 11:45 Sunny None None Clear Trash Sediment, Fine Particulates None Insects, Algae, Snails 6C-34 8/9/12 11:10 Sunny None None Clear None Fine Particulates None None 9B-7 7/25/12 13:20 Sunny ns ns ns ns Sediment, Fine Particulates None None 9B-38 7/24/12 10:00 Overcast None None Clear Bubbles, Trash, Foam Sediment, Gravel, Fine Particulates Normal Insects, Crayfish 9B-38 7/25/12 13:30 Sunny None Yellow Clear Bubbles, Trash Gravel, Fine Particulates Normal Insects, Crayfish 11B-46 8/9/12 13:45 Partly Cloudy None None Clear Bubbles, Trash Sediment, Gravel, Fine Particulates Normal Insects, Algae 11B-48 8/9/12 14:25 Partly Cloudy None None Clear None Sediment None None 11D-50 8/10/12 9:30 Sunny None None Clear None Fine Particulates None None 16C-61 7/6/12 11:00 Overcast None None Clear Trash Sediment, Fine Particulates None Insects, Algae, Snails 17B-8 8/10/12 12:15 Partly Cloudy None None Clear Trash Sediment, Gravel, Fine Particulates None None 17B-46 8/10/12 10:55 Partly Cloudy Musty Brown Opaque Algae Sediment, Gravel, Fine Particulates Normal Algae Appendix 7.2 TABLE 4-1 FIELD OBSERVATIONS (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 22 Site Date Time Light Conditions Odor Color Clarity Floatables Deposits Vegetation Biology 17B-47 8/10/12 10:35 Partly Cloudy ns ns ns ns Sediment, Fine Particulates None None 17B-52 8/10/12 14:00 Sunny ns ns ns ns Sediment, Gravel, Fine Particulates Normal Insects 17C-83 8/13/12 9:40 Sunny None None Clear Trash Sediment, Gravel, Fine Particulates None None 17D-7 8/10/12 14:35 Partly Cloudy None None Clear None Fine Particulates None None 17D-37 7/24/12 11:20 Partly Cloudy None None Clear Algae Fine Particulates None Algae, Tadpoles 18D-6 8/13/12 11:10 Sunny Musty None Clear Foam, Algae Fine Particulates None Insects, Algae, Snails 18D-33A 8/10/12 15:25 Sunny None None Clear Algae Sediment, Fine Particulates Normal Algae, Fish, Snails, Birds 19C-1 7/6/12 12:30 Sunny None None Clear Trash, algae Sediment, Gravel, Fine Particulates Normal Algae 19C-1 7/9/12 13:50 Sunny None None Clear Trash Sediment, Gravel, Fine Particulates Normal Insects, Algae 21C-14 7/6/12 13:20 Sunny None None Clear None Fine Particulates Normal Insects, Algae 22B-11 8/13/12 10:20 Sunny None Yellow Clear Bubbles, Foam Sediment, Gravel, Fine Particulates None Snails 25D-2 8/7/12 11:55 Sunny Musty None Clear Algae Sediment, Gravel, Fine Particulates Normal Insects, Algae 27B-47 7/24/12 15:00 Sunny ns ns ns ns Fine Particulates None None 27B-75 7/31/12 10:40 Partly Cloudy ns ns ns ns Sediment, Fine Particulates Normal Insects 27D-17 7/24/12 12:30 Partly Cloudy None None Clear Algae Sediment, Fine Particulates Normal Insects, Algae, Fish, Snails, Tadpoles, Crayfish 27D-17 7/25/12 15:00 Sunny None None Clear Algae Sediment, Fine Particulates Normal Insects, Algae, Fish, Snails, Tadpoles Appendix 7.2 TABLE 4-1 FIELD OBSERVATIONS (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 23 Site Date Time Light Conditions Odor Color Clarity Floatables Deposits Vegetation Biology 27D-31A 7/24/12 14:40 Partly Cloudy ns ns ns ns Sediment, Gravel, Fine Particulates None Insects, Algae, Fish, Snails 28C-70 7/31/12 11:10 Partly Cloudy None None Clear None Sediment, Fine Particulates None Insects, Algae, Snails 28C-70 8/1/12 9:55 Partly Cloudy None None Clear Trash, Algae Sediment, Fine Particulates None Insects, Algae, Snails 28C-73 7/31/12 10:50 Partly Cloudy Musty Yellow Clear None Fine Particulates None Insects, Larvae 28C-73 8/1/12 9:05 Partly Cloudy ns ns ns ns None None Insects 29B-44 7/31/12 14:15 Partly Cloudy Musty Yellow Clear Bubbles, Trash, Foam, Algae Sediment, Gravel, Fine Particulates Normal Insects, Algae, Fish, Snails 29B-44 8/1/12 15:00 Partly Cloudy Musty None Clear Bubbles, Trash, Foam Sediment, Fine Particulates Normal Insects, Algae, Fish, Snails 30A-38 8/13/12 13:45 Sunny None None Clear None None None None 30A-38 8/14/12 10:10 Sunny None White Opaque None None None None 31B-34 8/7/12 11:20 Sunny None None Clear None Sediment, Gravel, Fine Particulates None None 35A-12 7/24/12 15:30 Partly Cloudy None None Slightly Cloudy None None None None 35C-11 7/27/12 11:20 Sunny None None Clear None Sediment, Gravel, Fine Particulates None None 35C-51A 7/27/12 9:40 Partly Cloudy None None Clear Algae Sediment, Fine Particulates None Insects, Algae, Snails 35C-85 7/27/12 10:20 Partly Cloudy None None Clear None Fine Particulates None Algae 35C-85 7/30/12 12:10 Partly Cloudy None None Clear None Fine Particulates None Algae 36B-4 7/27/12 14:10 Sunny ns ns ns ns None None None 36B-6 7/27/12 14:30 Sunny ns ns ns ns Sediment, Gravel, Fine Particulates Normal Insects, Algae Appendix 7.2 TABLE 4-1 FIELD OBSERVATIONS (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 24 Site Date Time Light Conditions Odor Color Clarity Floatables Deposits Vegetation Biology 36B-43 8/14/12 11:30 Sunny ns ns ns ns Sediment, Gravel, Fine Particulates None None 36B-74 8/14/12 11:35 Sunny None None Clear None None None None 36B-74 8/14/12 15:35 Sunny None None Clear None None None None 36B-95 7/27/12 15:15 Sunny None None Clear None Fine Particulates None None 36B-95 7/30/12 14:05 Partly Cloudy None None Clear None Fine Particulates None None 37A-17 8/3/12 11:20 Partly Cloudy Chemical Yellow Slightly Cloudy None Sediment, Fine Particulates None None 37A-17 8/7/12 9:40 Sunny None None Clear None Fine Particulates None None 37A-70 7/30/12 14:45 Partly Cloudy None None Slightly Cloudy None Sediment, Fine Particulates Normal Insects, Algae, Fish 37A-70 7/31/12 15:20 Partly Cloudy None None Clear None Sediment, Fine Particulates Normal Insects, Algae, Fish 37B-19 8/2/12 14:40 Sunny None Yellow Clear Sheen, Trash, Grass Clippings Fine Particulates None Algae, Larvae 37B-22 8/2/12 13:50 Sunny None Yellow Clear None None None Insects 37B-22 8/3/12 10:00 Overcast None None Clear None None None None 37C-28 8/2/12 15:20 Partly Cloudy None None Slightly Cloudy Sheen, Trash Fine Particulates None Insects 37C-29 8/3/12 10:20 Overcast None Yellow Clear Sheen, Trash Fine Particulates None Insects 41D-32 7/6/12 15:20 Sunny None None Clear None Sediment, Fine Particulates None None 42C-92 7/25/12 11:50 Sunny None None Slightly Cloudy Bubbles, Foam Sediment, Gravel, Fine Particulates None None 42C-92 7/27/12 12:30 Sunny None None Clear None Sediment, Fine Particulates None None 44B-45 8/3/12 13:35 Sunny None None Clear Bubbles Sediment, Fine Particulates None None 45A-45 8/7/12 14:00 Sunny None None Clear Bubbles Sediment, Fine Particulates None Insects, Algae, Snails 45C-12 8/3/12 15:00 Sunny None None Clear None None None None Appendix 7.2 TABLE 4-1 FIELD OBSERVATIONS (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 25 Site Date Time Light Conditions Odor Color Clarity Floatables Deposits Vegetation Biology 45G-13 7/25/12 11:00 Sunny None None Clear Trash Sediment, Gravel, Fine Particulates None Insects, Algae 45G-13 8/3/12 14:25 Sunny None None Clear Trash Fine Particulates None Insects, Algae, Snails 46D-87 7/25/12 15:30 Sunny None None Clear None None None None 47C-5 8/13/12 15:30 Sunny None None Clear Fecal Matter Sediment, Fine Particulates None None 47D-25 8/7/12 15:40 Sunny None None Clear None Fine Particulates None None 48A-165 7/30/12 9:50 Partly Cloudy ns ns ns ns Fine Particulates None None 48C-25 8/7/12 15:00 Sunny ns ns ns ns Sediment, Fine Particulates Normal Worms, Larvae 48D-24 7/30/12 10:20 Partly Cloudy None None Slightly Cloudy None Fine Particulates None None 48D-24 8/1/12 15:45 Partly Cloudy None None Slightly Cloudy None Fine Particulates None None 49C-55 8/8/12 16:00 Sunny ns ns ns ns Sediment, Gravel, Fine Particulates None None 49D-12 8/8/12 15:00 Sunny None None Clear None Sediment, Gravel, Fine Particulates None Insects, Algae 51B-19 8/13/12 14:45 Sunny None None Clear Trash Sediment, Gravel, Fine Particulates Normal None 55A-51 8/8/12 13:30 Sunny None None Clear Trash, Foam, Algae Sediment, Gravel, Fine Particulates Normal Insects, Algae, Tadpoles 55A-62 7/25/12 10:00 Sunny None None Clear Bubbles, Foam, Algae Sediment, Gravel, Fine Particulates None Insects, Algae 55C-25 8/14/12 14:20 Sunny Musty Yellow Slightly Cloudy None Sediment, Gravel, Fine Particulates None None 58A-13 8/13/12 16:40 Sunny None Yellow Clear Trash Sediment, Gravel, Fine Particulates Normal Insects, Snails, Larvae 59C-90 8/8/12 11:00 Sunny None None Clear Bubbles Sediment, Gravel, Fine Particulates None Insects, Algae Appendix 7.2 TABLE 4-1 FIELD OBSERVATIONS (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 26 Site Date Time Light Conditions Odor Color Clarity Floatables Deposits Vegetation Biology 62B-4 8/8/12 9:25 Sunny None Yellow Clear Bubbles, Foam Sediment, Fine Particulates None None 62B-4 8/9/12 15:50 Partly Cloudy None None Clear None Fine Particulates None None Notes: Denotes a laboratory sampling location Denotes a confirmation visit ns = not sampled (not flowing) Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 27 4.2 Field Analytical Results Field analyses are conducted at all sites with flowing water. The measured constituents are described below. Flow rate quantifies the volume of fluid passing across a given surface per unit time. Flow rate measurements are needed to calculate the load of a pollutant discharged. Water temperature is needed to assess the significance of other parameters, such as pH and conductivity. The aquatic habitat must remain within a certain temperature range in order to sustain sensitive aquatic life. The pH is an expression of acidity or alkalinity of a water sample. The pH of an aquatic system will affect a variety of chemical reactions, including the availability of nutrients and the solubility of chemical substances, particularly heavy metals. Conductivity measurements indicate the total concentration of ions in an aquatic system and the ability of the water to conduct electricity. This parameter can be used to assess the mineral content of water and potentially indicate the presence of dissolved pollutants. Turbidity describes the clarity or cloudiness of a water sample, or the degree to which light is blocked by suspended material in the water. Turbid waters not only limit the amount of light that reaches submerged vegetation, thus reducing photosynthetic capacity, but excessive suspended particles can also absorb heat and increase water temperatures. Detergents (MBAS) concentrations in water samples often reflect illegal discharges from industrial, commercial, or residential sources, typically as a result of washing activities. Pollution resulting from detergents alters the surface tension of water and disrupts the breathing mechanisms of fish gills and other aquatic organisms. Ammonia-N is an indicator of pollution from decomposing organic matter, agricultural or household fertilizer runoff, or the presence of sewage. Ammonia occurs naturally in the environment; however, in higher quantities it can be toxic to fish and other organisms. Nitrate-N is a common sign of nutrient pollution from agricultural or household fertilizer runoff. Nitrate pollution can cause excessive algal growth, resulting in oxygen depletion as algae decompose which can consequently suffocate other aquatic life. During field screening, nitrate is measured and converted into nitrate-N using a conversion factor of 0.226. This process is explained in Note 3 of Table 3-1. Orthophosphate-P is also an indicator of nutrient pollution from agricultural or household fertilizer runoff. Similar to nitrate-N, orthophosphate-P pollution can cause nutrient enrichment, stimulate algal growth, and thus deplete oxygen in the water to levels that are dangerous for aquatic life. Even low levels of orthophosphate-P can cause significant algal growth, as it is commonly the limiting nutrient in plant growth. During field screening, orthophosphate is measured and converted into orthophosphate-P using a conversion factor of 0.326. This process is explained in Note 4 of Table 3-1. A statistical summary of the routine field analytical results is presented in Table 4-2. Table 4-3 shows the results of all field analyses conducted at the sampled sites. Graphs of the various parameters measured during routine visits are included at the end of this section. Statistics and graphs include data from routine visits at flowing sites only. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 28 TABLE 4-2 FIELD ANALYSIS STATISTICAL SUMMARY¹ Parameter (units) Maximum Minimum Average Median Standard Deviation Number of Exceedances Graph Number Flow (gpm) 50 <1 8.9 4.0 10.9 -- 4-1 Temperature (°C) 29.9 20.8 24.7 24.9 1.9 0 4-2 pH 8.99 4.12 7.81 7.88 0.73 2 4-3 Turbidity (NTU) 126 nd 13.82 6.20 20.67 5 4-4 Conductivity (mS/cm) 12.40 0.78 4.38 3.90 2.51 0 4-5 Detergents (MBAS) (mg/L) >3.00 0.13 0.50 0.38 0.45 4 4-6 Ammonia-N (mg/L) 5.675 nd 0.550 0.275 0.964 6 4-7 Nitrate-N (mg/L) 51.55 nd 4.048 0.691 8.867 5 4-8 Orthophosphate-P (mg/L) 1.132 0.008 J 0.266 0.186 0.239 0 4-9 Notes: ¹Statistics are calculated from the results of the routine site visits only; confirmation and follow-up visits are not included. gpm = gallons per minute J = Value is below the reporting limit; result is an estimate. Appendix 7.2 TABLE 4-3 FIELD SCREENING RESULTS CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 29 Site Date Time Flow (gpm) Temperature (°C) pH Turbidity (NTU) Conductivity (mS/cm) Detergents (mg/L) Ammonia-N (mg/L) Nitrate-N (mg/L) Orthophosphate-P (mg/L) 1C-21 7/6/12 9:30 13 21.4 7.83 36.06 8.06 0.63 1.173 0.431 J 0.186 1C-21 7/9/12 15:20 10 na na 49.00 na na 0.442 na na 1D-20 7/5/12 13:20 11 22.2 7.88 nd 5.18 0.50 0.104 J 3.345 0.168 1D-21 7/5/12 14:20 15 21.8 7.83 nd 4.70 0.50 0.056 J 5.926 0.210 5A-4 8/9/12 10:45 No Flow ns ns ns ns ns ns ns ns 5A-14 8/9/12 9:45 3 25.0 8.24 7.45 3.05 0.50 0.082 J 3.799 0.451 6B-4 8/13/12 11:50 <1 25.4 8.00 4.08 1.68 0.25 0.259 0.518 J 0.677 6C-23 8/9/12 11:45 2 24.3 7.92 1.12 5.00 0.38 0.186 J 3.042 0.467 6C-34 8/9/12 11:10 6 24.9 8.07 1.36 5.03 0.38 nd 3.379 0.459 9B-7 7/25/12 13:20 No Flow ns ns ns ns ns ns ns ns 9B-38 7/24/12 10:00 5 21.0 8.24 3.14 1.94 0.25 0.126 J 10.92 0.263 9B-38 7/25/12 13:30 5 na na na na na na 9.912 na 11B-46 8/9/12 13:45 1 25.3 8.37 1.10 1.63 0.25 0.325 0.594 J 0.164 11B-48 8/9/12 14:25 <1 27.0 8.49 11.90 2.07 0.13 0.193 J 0.143 J 0.320 11D-50 8/10/12 9:30 <1 24.4 8.12 8.28 1.42 0.13 0.107 J 0.060 J 0.590 16C-61 7/6/12 11:00 23 21.3 8.42 nd 2.12 0.25 0.108 J 4.556 0.165 17B-8 8/10/12 12:15 11 25.1 7.58 10.69 4.42 0.38 0.356 0.299 J 0.102 17B-46 8/10/12 10:55 11 25.1 7.85 126 4.31 0.25 0.458 0.461 J 0.768 17B-47 8/10/12 10:35 No Flow ns ns ns ns ns ns ns ns 17B-52 8/10/12 14:00 No Flow ns ns ns ns ns ns ns ns 17C-83 8/13/12 9:40 5 26.9 8.77 0.88 3.14 0.25 0.117 J 3.774 0.274 17D-7 8/10/12 14:35 1 28.5 7.56 20.44 2.96 0.38 0.811 0.523 J 0.718 17D-37 7/24/12 11:20 12 25.0 7.73 11.21 5.54 0.50 0.078 J 0.869 J 0.008 J 18D-6 8/13/12 11:10 4 24.2 6.74 2.22 3.10 0.25 0.087 J nd 0.021 J 18D-33A 8/10/12 15:25 29 29.9 7.89 5.25 3.63 0.25 0.214 0.028 J 0.020 J 19C-1 7/6/12 12:30 28 21.5 7.77 nd 7.22 0.50 1.441 6.782 0.138 Appendix 7.2 TABLE 4-3 FIELD SCREENING RESULTS (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 30 Site Date Time Flow (gpm) Temperature (°C) pH Turbidity (NTU) Conductivity (mS/cm) Detergents (mg/L) Ammonia-N (mg/L) Nitrate-N (mg/L) Orthophosphate-P (mg/L) 19C-1 7/9/12 13:50 35 na na na na na 0.510 na na 21C-14 7/6/12 13:20 1 20.8 7.80 17.81 1.27 0.25 0.128 J 0.152 J 0.174 22B-11 8/13/12 10:20 4 25.3 8.45 5.87 1.90 0.25 0.143 J 0.511 J 0.657 25D-2 8/7/12 11:55 2 23.7 7.58 15.74 5.00 0.50 0.510 0.545 J 0.152 27B-47 7/24/12 15:00 No Flow ns ns ns ns ns ns ns ns 27B-75 7/31/12 10:40 No Flow ns ns ns ns ns ns ns ns 27D-17 7/24/12 12:30 10 25.1 7.97 12.13 4.79 0.75 0.073 J 23.79 0.021 J 27D-17 7/25/12 15:00 7 na na na na na na 46.96 na 27D-31A 7/24/12 14:40 No Flow ns ns ns ns ns ns ns ns 28C-70 7/31/12 11:10 16 23.6 7.57 0.13 2.57 0.63 1.324 51.55 0.148 28C-70 8/1/12 9:55 19 na na na na na 3.018 40.82 na 28C-73 7/31/12 10:50 1 24.2 8.60 5.49 1.18 1.50 0.300 2.961 0.776 28C-73 8/1/12 9:05 No Flow ns ns ns ns ns ns ns ns 29B-44 7/31/12 14:15 15 24.9 8.52 11.23 3.90 0.50 4.860 6.362 0.638 29B-44 8/1/12 15:00 15 na na na na na 3.705 na na 30A-38 8/13/12 13:45 9 27.0 7.91 3.10 6.04 0.38 0.334 10.60 0.242 30A-38 8/14/12 10:10 9 na na na na na na 9.860 na 31B-34 8/7/12 11:20 <1 27.2 8.24 4.76 6.31 0.50 0.310 8.608 0.450 35A-12 7/24/12 15:30 2 24.8 8.76 26.26 1.85 0.13 0.155 J 0.691 J 0.138 35C-11 7/27/12 11:20 4 25.2 8.45 1.68 1.54 0.13 0.095 J 0.293 J 0.078 J 35C-51A 7/27/12 9:40 10 24.4 8.99 7.83 3.79 0.38 0.241 6.233 0.013 J 35C-85 7/27/12 10:20 2 20.8 8.50 0.06 4.45 0.63 0.304 39.50 0.157 35C-85 7/30/12 12:10 2 na na na na na na 35.78 na 36B-4 7/27/12 14:10 No Flow ns ns ns ns ns ns ns ns 36B-6 7/27/12 14:30 No Flow ns ns ns ns ns ns ns ns 36B-43 8/14/12 11:30 No Flow ns ns ns ns ns ns ns ns 36B-74 8/14/12 11:35 5 24.6 7.82 2.44 1.83 1.50 0.089 J 0.580 J 0.226 36B-74 8/14/12 15:35 5 na na na na 1.50 na na na 36B-95 7/27/12 15:15 2 23.9 7.32 23.51 6.61 0.50 5.675 4.816 0.275 Appendix 7.2 TABLE 4-3 FIELD SCREENING RESULTS (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 31 Site Date Time Flow (gpm) Temperature (°C) pH Turbidity (NTU) Conductivity (mS/cm) Detergents (mg/L) Ammonia-N (mg/L) Nitrate-N (mg/L) Orthophosphate-P (mg/L) 36B-95 7/30/12 14:05 2 na na na na na 0.395 na na 37A-17 8/3/12 11:20 <1 24.2 7.42 33.23 5.71 1.50 0.792 6.199 0.449 37A-17 8/7/12 9:40 <1 na na na na 0.50 na na na 37A-70 7/30/12 14:45 23 27.8 7.97 41.97 9.85 0.75 0.735 0.207 J 0.048 J 37A-70 7/31/12 15:20 5 na na 12.03 na na na na na 37B-19 8/2/12 14:40 <1 24.7 6.60 8.93 1.97 0.50 0.806 0.405 J 0.332 37B-22 8/2/12 13:50 2 24.5 4.12 3.79 8.19 0.75 1.670 0.631 J 0.033 J 37B-22 8/3/12 10:00 1 na 6.69 na na na 0.805 na na 37C-28 8/2/12 15:20 2 23.0 7.11 56 8.59 0.50 0.628 0.054 J 0.036 J 37C-29 8/3/12 10:20 3 22.6 6.69 22.63 6.48 0.50 0.570 nd 0.027 J 41D-32 7/6/12 15:20 <1 24.4 8.39 4.83 0.78 0.13 0.099 J 0.460 J 0.061 J 42C-92 7/25/12 11:50 4 27.2 7.67 51 2.76 >3.00 0.268 1.274 0.331 42C-92 7/27/12 12:30 4 na na 2.44 na 0.25 na na na 44B-45 8/3/12 13:35 12 26.1 7.92 13.63 6.55 0.50 0.375 0.199 J 0.044 J 45A-45 8/7/12 14:00 2 26.4 7.39 7.90 8.66 0.50 0.450 1.135 0.133 45C-12 8/3/12 15:00 2 25.4 7.52 1.72 1.83 0.13 0.230 0.750 J 0.211 45G-13 7/25/12 11:00 50 24.8 7.76 1.98 3.05 0.25 0.275 0.982 J 0.135 45G-13 8/3/12 14:25 39 na na na na na na na na 46D-87 7/25/12 15:30 50 23.4 7.88 2.05 3.06 0.25 0.163 J 4.680 0.079 J 47C-5 8/13/12 15:30 2 26.6 8.24 9.00 2.11 0.13 0.164 J 1.430 0.480 47D-25 8/7/12 15:40 22 25.4 7.14 15.74 6.79 0.50 0.338 0.170 J 1.132 48A-165 7/30/12 9:50 No Flow ns ns ns ns ns ns ns ns 48C-25 8/7/12 15:00 No Flow ns ns ns ns ns ns ns ns 48D-24 7/30/12 10:20 9 23.8 7.91 57 12.40 0.88 0.970 9.487 0.103 48D-24 8/1/12 15:45 18 na na 46.78 na na na na na 49C-55 8/8/12 16:00 No Flow ns ns ns ns ns ns ns ns 49D-12 8/8/12 15:00 2 23.8 8.30 3.10 5.97 0.38 0.049 J 0.548 J 0.037 J 51B-19 8/13/12 14:45 7 25.8 8.01 2.80 1.73 0.25 0.176 J 0.848 J 0.264 55A-51 8/8/12 13:30 18 26.0 7.81 3.03 4.83 0.38 0.428 0.521 J 0.062 J Appendix 7.2 TABLE 4-3 FIELD SCREENING RESULTS (CONTINUED) CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 32 Site Date Time Flow (gpm) Temperature (°C) pH Turbidity (NTU) Conductivity (mS/cm) Detergents (mg/L) Ammonia-N (mg/L) Nitrate-N (mg/L) Orthophosphate-P (mg/L) 55A-62 7/25/12 10:00 12 22.1 8.06 3.60 7.92 0.50 0.264 0.173 J 0.151 55C-25 8/14/12 14:20 <1 26.9 7.48 38.11 7.12 0.50 0.282 0.101 J 0.273 58A-13 8/13/12 16:40 2 25.5 7.61 6.20 3.79 0.38 0.477 0.655 J 0.272 59C-90 8/8/12 11:00 8 25.7 7.76 6.46 3.66 0.25 0.720 0.824 J 0.428 62B-4 8/8/12 9:25 27 25.5 6.00 31.54 5.18 0.38 0.680 0.477 J 0.269 62B-4 8/9/12 15:50 27 na 5.07 22.30 na na na na na Reporting Limit 0.1 0.01 0.00 0.01 0.13 0.20 1.13 0.098 Action Level BPJ < 6.5 or > 9.0 BPJ1 BPJ 1.0 1.0 10.0 2.0 Notes: Denotes a location sampled for laboratory analysis J = Value is below the reporting limit; result is an estimate. Red values exceed action level. Denotes a confirmation visit nd = not detected na = not analyzed ns = not sampled (not flowing) BPJ = Best Professional Judgment (see Section 3.4) 1 Some elevated turbidity values were not determined to be exceedances based on BPJ. Appendix 7.2 GRAPH 4-1: FLOW CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 33 01020304050601C-211D-201D-215A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-817B-4617B-4717B-5217C-8317D-717D-3718D-619C-118D-33A21C-1422B-1125D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-3831B-3435A-1235C-1135C-51A35C-8536B-436B-636B-4336B-7436B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548A-16548C-2548D-2449C-5549D-1251B-1955A-5155A-6255C-2558A-1359C-9062B-4Flow Rate (gpm)Site Note: Zero values include sites without flowing water, which were not sampled for field tests. Appendix 7.2 GRAPH 4-2: TEMPERATURE Action Level is Best Professional Judgment CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 34 15.017.019.021.023.025.027.029.031.01C-211D-201D-215A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-817B-4617B-4717B-5217C-8317D-717D-3718D-619C-118D-33A21C-1422B-1125D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-3831B-3435A-1235C-1135C-51A35C-8536B-436B-636B-4336B-7436B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548A-16548C-2548D-2449C-5549D-1251B-1955A-5155A-6255C-2558A-1359C-9062B-4Temperature (°C)Site Note: Zero values include sites without flowing water, which were not sampled for field tests. Appendix 7.2 GRAPH 4-3: PH Action Level is < 6.5 or > 9.0 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 35 6.59.00.02.04.06.08.010.012.01C-211D-201D-215A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-817B-4617B-4717B-5217C-8317D-717D-3718D-619C-118D-33A21C-1422B-1125D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-3831B-3435A-1235C-1135C-51A35C-8536B-436B-636B-4336B-7436B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548A-16548C-2548D-2449C-5549D-1251B-1955A-5155A-6255C-2558A-1359C-9062B-4pHSite Note: Zero values include sites without flowing water, which were not sampled for field tests. Appendix 7.2 GRAPH 4-4: TURBIDITY Action Level is Best Professional Judgment CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 36 01020304050601C-211D-201D-215A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-817B-4617B-4717B-5217C-8317D-717D-3718D-619C-118D-33A21C-1422B-1125D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-3831B-3435A-1235C-1135C-51A35C-8536B-436B-636B-4336B-7436B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548A-16548C-2548D-2449C-5549D-1251B-1955A-5155A-6255C-2558A-1359C-9062B-4Turbidity (NTU)Site 126 Note: Zero values include sites without flowing water, which were not sampled for field tests. Appendix 7.2 GRAPH 4-5: CONDUCTIVITY Action Level is Best Professional Judgment CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 37 0.02.04.06.08.010.012.014.01C-211D-201D-215A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-817B-4617B-4717B-5217C-8317D-717D-3718D-619C-118D-33A21C-1422B-1125D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-3831B-3435A-1235C-1135C-51A35C-8536B-436B-636B-4336B-7436B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548A-16548C-2548D-2449C-5549D-1251B-1955A-5155A-6255C-2558A-1359C-9062B-4Conductivity (mS/cm)Site Note: Zero values include sites without flowing water, which were not sampled for field tests. Appendix 7.2 GRAPH 4-6: SURFACTANTS Action Level = 1.0 mg/L CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 38 0.00.51.01.52.02.53.03.51C-211D-201D-215A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-817B-4617B-4717B-5217C-8317D-717D-3718D-619C-118D-33A21C-1422B-1125D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-3831B-3435A-1235C-1135C-51A35C-8536B-436B-636B-4336B-7436B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548A-16548C-2548D-2449C-5549D-1251B-1955A-5155A-6255C-2558A-1359C-9062B-4Surfactants (mg/L)Site Note: Zero values include sites without flowing water, which were not sampled for field tests. Appendix 7.2 GRAPH 4-7: AMMONIA-N Action Level = 1.0 mg/L CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 39 0.01.02.03.04.05.06.01C-211D-201D-215A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-817B-4617B-4717B-5217C-8317D-717D-3718D-619C-118D-33A21C-1422B-1125D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-3831B-3435A-1235C-1135C-51A35C-8536B-436B-636B-4336B-7436B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548A-16548C-2548D-2449C-5549D-1251B-1955A-5155A-6255C-2558A-1359C-9062B-4Ammonia-N (mg/L)Site Note: Zero values include sites without flowing water, which were not sampled for field tests. Appendix 7.2 GRAPH 4-8: NITRATE-N Action Level = 10.0 mg/L CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 40 0.010.020.030.040.050.060.01C-211D-201D-215A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-817B-4617B-4717B-5217C-8317D-717D-3718D-619C-118D-33A21C-1422B-1125D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-3831B-3435A-1235C-1135C-51A35C-8536B-436B-636B-4336B-7436B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548A-16548C-2548D-2449C-5549D-1251B-1955A-5155A-6255C-2558A-1359C-9062B-4Nitrate-N (mg/L)Site Note: Zero values include sites without flowing water, which were not sampled for field tests. Appendix 7.2 GRAPH 4-9: ORTHOPHOSPHATE-P Action Level = 2.0 mg/L CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 41 0.00.51.01.52.02.51C-211D-201D-215A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-817B-4617B-4717B-5217C-8317D-717D-3718D-619C-118D-33A21C-1422B-1125D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-3831B-3435A-1235C-1135C-51A35C-8536B-436B-636B-4336B-7436B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548A-16548C-2548D-2449C-5549D-1251B-1955A-5155A-6255C-2558A-1359C-9062B-4Orthophosphate-P (mg/L)Site Note: Zero values include sites without flowing water, which were not sampled for field tests. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 42 5.0 LABORATORY ANALYTICAL RESULTS 5.1 Summary Laboratory analyses were conducted at 15 sites, representing 25 percent of all routine monitoring sites within the City of Carlsbad. The laboratory constituents measured are defined below. Oil and grease analysis is used to detect hydrocarbon pollution from a variety of sources, including parking lots and streets, washing activities, illegal discharges, and automobile repair facilities. Diazinon and chlorpyrifos are organophosphate pesticides that can be harmful to aquatic organisms if transported in urban runoff. Diazinon and chlorpyrifos are highly toxic to birds, mammals, and insects. They are also highly toxic to freshwater fish and invertebrates following acute exposure. Coliform bacteria are present in mammalian digestive tracts and are relatively harmless to humans. Coliform bacteria are naturally found in most surface waters and soils. Water samples are tested for total coliform in the interest of public health, serving as an indicator of the presence of other more harmful pathogenic organisms of potentially fecal origin. Water is tested for total coliform in lieu of these pathogens as they occur in much smaller quantities that may be difficult to detect. Fecal coliforms, a subset of coliform bacteria, and Enterococci are found primarily in the gastrointestinal tracts of humans and animals and are commonly used as indicators of water contamination by fecal matter. Without the use of significantly more expensive methods, such as ribotyping, it is not possible to determine whether the source of any fecal material present in water is human or animal. Human fecal material is known to contain pathogens dangerous to humans, but the relationship between animal waste and threat to human health is less certain. Total hardness measures the amount of calcium and magnesium ions in a water sample, with the result expressed in mg/L of CaCO3. Hardness itself is not considered a pollutant, but is measured to calculate CTR limits for dissolved metals. Hardness affects the solubility of dissolved metals as well as other minerals and ions. Metal contamination of water can arise from a variety of sources, including automobile operation, automobile repair, vehicle washing, galvanizing of metal, and electronics manufacturing. Certain dissolved metals are toxic pollutants that are hazardous to the survival and development of aquatic organisms. The CTR for Dissolved Metals in Fresh Waters defines metal toxicity as a function of water hardness. As hardness increases, so does the CMC, a concentration limit in which aquatic life can be sustained. CMC values differ for various metals. Dry weather monitoring laboratory samples are analyzed for the presence of dissolved cadmium, copper, lead, and zinc. Table 5-1 shows the sites with detectable metal concentrations, the measured total hardness of the sample, and the associated CMC. Results for dissolved lead are not included in Table 5-1 since it was not detected at any sites this year. A summary of the laboratory analytical results is presented in Table 5-2. Laboratory results for the 2012 Dry Weather Monitoring Program is included in Table 5-3. Laboratory reports are included in Appendix E. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 43 TABLE 5-1 CTR – CMC FOR DISSOLVED METALS* Site Total Hardness (mg/L) Cadmium (g/L) Copper** (g/L) Lead (g/L) Zinc** (g/L) Result CMC Result CMC Result CMC Result CMC 1D-20 1,570 nd 19 7 J 50 nd 281 3 J 379 9B-38 414 nd 19 11 50 nd 281 7 J 379 16C-61 550 nd 19 6 J 50 nd 281 11 J 379 17D-37 1,650 nd 19 3 J 50 nd 281 19 J 379 19C-1 2,800 nd 19 11 J 50 nd 281 10 J 379 21C-14 296 nd 14 nd 37 nd 206 9 J 294 27D-17 950 0.2 J 19 4 J 50 nd 281 5 J 379 29B-44 1,120 nd 19 7 J 50 nd 281 17 J 379 35C-11 312 nd 15 3 J 39 nd 217 4 J 307 35C-51A 959 nd 19 5 J 50 nd 281 3 J 379 37A-70 3,240 0.2 J 19 10 50 1 J 281 3 J 379 42C-92 733 0.2 J 19 9 J 50 nd 281 8 J 379 45G-13 1,020 0.2 J 19 7 J 50 nd 281 6 J 379 48D-24 3,790 12 19 15 J 50 nd 281 45 J 379 55A-62 2,240 0.2 J 19 10 50 1 J 281 5 J 379 Notes: CMC = Criterion Maximum Concentration, short term concentration limit in which aquatic life can be sustained. J = Value is below the reporting limit; result is an estimate. * Sites listed are those at which a particular dissolved metal was detected. Equations and constants used in California Toxics Rule calculations (see http://www.epa.gov/ost/standards/ctr/toxic.pdf). **The reporting limit will always be adjusted depending on the dilution factor used for quantifying the actual results. As the dilution factor increases, the reporting limit listed in the results from EMA will also increase based on the calculation made with EMA’s data system. However, the lowest quantifiable number or reporting limit would still be 10 µg/L for dissolved copper and 20 µg/L for dissolved zinc. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 44 TABLE 5-2 LABORATORY ANALYSES SUMMARY Parameter (units) Maximum Minimum Number of Exceedances Oil and Grease (mg/L) nd nd 0 Total Hardness (mg/L CaCo3) 3,790 296 * Dissolved Cadmium (μg/L) 12 nd 0 Dissolved Copper (µg/L) 15 J nd 0 Dissolved Lead (µg/L) 1 J nd 0 Dissolved Zinc (µg/L) 45 J 3 J 0 Diazinon (µg/L) nd nd 0 Chlorpyrifos (µg/L) nd nd 0 Total Coliforms (MPN/100 mL) 50,000 2,300 0 Fecal Coliforms (MPN/100 mL) 13,000 20 1 Enterococci (MPN/100 mL) 2,800 nd 0 Notes: Calculations include complete routine visit data only; confirmation and follow-up visits are not included. nd = not detected *Total hardness is not considered a pollutant and does not have an established action level. J = Value reported is below the reporting limit; result is an estimate. Appendix 7.2 TABLE 5-3 LABORATORY ANALYTICAL RESULTS CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 45 Site Date Time Oil & Grease (mg/L) Total Hardness (mg/L CaCo3) Dissolved Cadmium (µg/L) Dissolved Copper (µg/L) Dissolved Lead (µg/L) Dissolved Zinc (µg/L) Diazinon (µg/L) Chlorpyrifos (µg/L) Total Coliforms (MPN/100 mL) Fecal Coliforms (MPN/100 mL) Enterococci (MPN/100 mL) 1D-20 7/5/12 13:20 nd 1,570 nd 7 J nd 3 J nd nd 2,300 500 260 9B-38 7/24/12 10:00 nd 414 nd 11 nd 7 J nd nd 13,000 500 2,300 16C-61 7/6/12 11:00 nd 550 nd 6 J nd 11 J nd nd 5,000 170 80 17D-37 7/24/12 11:20 nd 1,650 nd 3 J nd 19 J nd nd 3,000 20 20 19C-1 7/6/12 12:30 nd 2,800 nd 11 J nd 10 J nd nd 50,000 1,100 1,400 21C-14 7/6/12 13:20 nd 296 nd nd nd 9 J nd nd 7,000 500 110 27D-17 7/24/12 12:30 nd 950 0.2 J 4 J nd 5 J nd nd 23,000 170 130 29B-44 7/31/12 14:15 nd 1,120 nd 7 J nd 17 J nd nd 5,000 80 7 35C-11 7/27/12 11:20 nd 312 nd 3 J nd 4 J nd nd 23,000 170 1,700 35C-51A 7/27/12 9:40 nd 959 nd 5 J nd 3 J nd nd 13,000 5,000 nd 37A-70 7/30/12 14:45 nd 3,240 0.2 J 10 1 J 3 J nd nd 8,000 110 230 42C-92 7/25/12 11:50 nd 733 0.2 J 9 J nd 8 J nd nd 13,000 1,300 2,300 45G-13 7/25/12 11:00 nd 1,020 0.2 J 7 J nd 6 J nd nd 30,000 13,000 2,800 45G-13 8/3/12 14:25 na na na na na na na na 141,0001 8,5532 na 48D-24 7/30/12 10:20 nd 3,790 12 15 J nd 45 J nd nd 23,000 1,400 860 55A-62 7/25/12 10:00 nd 2,240 0.2 J 10 1 J 5 J nd nd 23,000 5,000 230 Reporting Limit 5 10 1 10 5 203 0.05 0.05 204 204 204 Minimum Detection Limit 5 10 0.2 1 1 0.3 0.04 0.04 20 20 20 Action Level 15 * CTR CTR CTR CTR 0.5 0.5 130,000 13,000 7,000 Notes: nd = not detected; J = Value is below the reporting limit; result is an estimate; na = not analyzed. Red values exceed action level for routine site visits. Denotes a confirmation visit 1 Total coliform bacteria, included as a result of using the IDEXX Colilert test method, was not the target constituent of this visit, and as such was not investigated as an exceedance. 2 Fecal coliform values measured at confirmation visits are derived from E. Coli value (see Note 4 of Table 3-3). 3 The reporting limit will always be adjusted depending on the dilution factor used for quantifying the actual results. As the dilution factor increases, the reporting limit listed in the results from EMA will also increase based on the calculation made with EMA’s data system. However, the lowest quantifiable number or reporting limit would still be 10 µg/L for dissolved copper and 20 µg/L for dissolved zinc. 4Reporting limit is 10 MPN/100 mL for IDEXX tests used during confirmation and upstream testing. *Total hardness is not considered a pollutant (see Section 3.4), and thus has no established action level for the purposes of dry weather monitoring. Total hardness is measured because the CTR action levels for metals are dependent on the total hardness value of the water sample. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 46 6.0 DATA ANALYSIS The section provides an overall evaluation of the results of the 2012 Dry Weather Monitoring Program, as well as a discussion of historical trends for various constituent exceedances. Historical data tables are provided in Appendix B. 6.1 2012 Results Table 6-1 presents the sites at which parameters tested above respective action levels. Some notable observations include: • A total of 23 exceedances were measured during routine site visits, including 22 field screening exceedances and one laboratory exceedance. Of the 23 exceedances, only nine persisted at the time of the confirmation visit. • The constituent with the highest incidence of exceedance was ammonia-N, measuring above the action level during six routine site visits. Nitrate-N and turbidity were each in exceedance during five routine visits. TABLE 6-1 2012 EXCEEDANCES AT A GLANCE Site pH Turbidity Detergents Ammonia-N Nitrate-N Fecal Coliforms 1C-21 X X 9B-38 X 19C-1 X 27D-17 X 28C-70 X X 28C-73 X 29B-44 X 30A-38 X 35C-85 X 36B-74 X 36B-95 X 37A-17 X 37A-70 X 37B-22 X X 42C-92 X X 45G-13 X 48D-24 X 62B-4 X X Notes: Table reflects results based on complete routine site visits only; confirmation and follow-up visits are not included. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 47 6.2 Previous Results Current and historical results of exceedances are presented in Table 6-2, Graph 6-1, and Graph 6-2. Table 6-2 presents the percentage of sampled sites that have had exceedances each year during the City’s Dry Weather Monitoring Program. Graph 6-1 illustrates the percentage of exceedances by year for field constituents. Because no exceedances have been measured in water temperature and conductivity since 2002, these constituents have not been included in the following tables and graphs. Graph 6-2 presents the percentage of exceedances for laboratory analyses by year. Oil and grease exceedances have been uncommon. Throughout the history of the Dry Weather Monitoring Program, diazinon was only detected once in 2009, and chlorpyrifos was detected once in 2003. No exceedances have been measured in dissolved cadmium, dissolved copper, dissolved lead, or dissolved zinc in the history of the Dry Weather Monitoring Program. Thus, these constituents have not been included in the following tables and graphs. In 2010, dry weather action levels for bacterial indicators were revised. Constituents have been evaluated against the action levels in effect at the time of sampling in order to identify exceedances. Appendix 7.2 TABLE 6-2 PERCENT OF SITES WITH EXCEEDANCES BY YEAR CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 48 Year No. of Sampled Sites Field Screening Laboratory Analysis pH Turbidity Detergents Ammonia-N Nitrate-N Orthophos- phate-P Oil & Grease Diazinon Chlorpyrifos Total Coliforms* Fecal Coliforms* Enterococci* 2002 60 5 2 7 23 12 2 27 0 0 13 7 13 2003 60 3 0 7 17 10 0 0 0 7 53 53 7 2004 60 7 0 2 7 8 0 0 0 0 33 13 13 2005 60 10 0 8 3 8 0 7 0 0 73 13 13 2006 60 5 3 3 8 10 3 0 0 0 86 21 20 2007 60 5 8 2 0 5 2 0 0 0 20 7 20 2008 60 5 0 2 3 13 3 0 0 0 20 20 20 2009 57 4 0 5 5 9 0 13 7 0 33 13 27 2010 60 5 3 5 23 12 2 0 0 0 7 20 7 2011 60 5 0 2 12 12 0 0 0 0 27 13 20 2012 59 3 8 7 10 8 0 0 0 0 0 7 0 Notes: Results based on complete routine visits only. Confirmation visits, follow-up visits, dry, and ponded sites not included. *Dry weather action levels for bacterial indicators were revised in 2010. Constituents have been compared to action levels in effect at the time of sampling to identify exceedances. Appendix 7.2 GRAPH 6-1 PERCENT OF SITES WITH FIELD CONSTITUENT EXCEEDANCES BY YEAR CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 49 0102030pH Turbidity Surfactants Ammonia-N Nitrate-N Orthophosphate-PPercent of Sites with ExceedancesConstituent20022003200420052006200720082009201020112012Appendix 7.2 GRAPH 6-2 PERCENT OF SITES WITH LABORATORY ANALYSIS EXCEEDANCES BY YEAR CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 50 0102030405060708090100Oil & GreaseDiazinonChlorpyrifosTotal Coliforms Fecal ColiformsEnterococciPercent of Sites with ExceedancesConstituent20022003200420052006200720082009201020112012 Note: Dry weather action levels for bacterial indicators were revised in 2010. Constituents have been compared to action levels in effect at the time of sampling to identify exceedances. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 51 7.0 FOLLOW-UP INVESTIGATIONS The purpose of follow-up, or upstream, investigations is to investigate the source(s) of action level exceedances measured during the routine field screening and laboratory testing. 7.1 Investigation Procedures When a constituent was found to exceed the established action level during the routine visit, a confirmation visit was conducted within two business days to retest the constituent. If a field screening parameter exceeded the action level at the confirmation visit, an upstream investigation was initiated in most cases. If a laboratory constituent exceeded the action level at the confirmation visit, the City’s Stormwater Hotline was contacted prior to conducting an upstream investigation. An upstream investigation was typically conducted if elevated pollutant concentrations were found to persist and no sources could be identified in the immediate vicinity of the monitoring site. Pollutant source investigations were not completed where constituent values and site conditions were consistent with historical findings, and additional investigation was unnecessary to determine a source. During all confirmation and follow-up visits, flow rates were measured, and visual observations were noted. Field datasheets are included in Appendix D. The IDEXX Colilert method was used for bacterial analyses for confirmation visits because results could be obtained within 24 hours. This is faster than the standard turnaround time for the multiple tube fermentation (MTF) methods used in routine dry weather sampling. Table 3-2 of this report provides more information about both the IDEXX and MTF methods. 7.2 Investigation Discussion 7.2.1 Typical Dry Weather Pollutant Sources During the City of Carlsbad 2012 Dry Weather Monitoring Program, the most frequent constituent in exceedance was ammonia-N. Other constituent exceedances included detergents, indicator bacteria, nitrate-N, pH, and turbidity. Some of the more common sources of these are listed below for clarity and to avoid redundant information in the following upstream investigation discussion. Ammonia-N • Use of fertilizer or cleaning products containing ammonia. • Relatively large amounts of decomposing organic material, especially in ponded or slowly flowing water. Some microorganisms active in the decomposition of organic materials use oxygen as an energy source, which removes oxygen from water. Dissolved oxygen is typically replenished at a slower rate in ponded or slowly flowing water. When decomposition results in an oxygen-limited environment, other types of microorganisms utilize nitrate and other forms of nitrogen found at a higher oxidation state than ammonia as an energy source. When the former nitrogen-containing compounds are used as energy sources, the nitrogen is converted to ammonia, thus increasing the ammonia concentration in the water. Detergents • Washing with soap products Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 52 • False positive results may occur due to interference of the field test caused by elevated nitrate or chloride levels. 1 Typically, water with higher concentrations of nitrate and chloride has elevated conductivity measurements. Indicator Bacteria Indicator bacteria are generally not themselves pathogenic but are tested as proxies for pathogens that are more difficult to test for directly. Indicator bacteria groups analyzed as part of the Dry Weather Monitoring Program include total coliforms, fecal coliforms, and Enterococci. The Copermittees recently prepared a tentative conceptual framework for bacteria source identification, including a list of sources and diagrams illustrating relationships among sources. This effort was based on an extensive literature review. Jurisdictions in the San Diego region and in other parts of southern California have also undertaken or are currently undertaking studies to further characterize bacteria sources. Past research has found that indicator bacteria are associated with many different types of sources and activities, some of which may not be associated with pathogens that are potentially harmful to humans. Some of the main groups of potential sources of indicator bacteria are listed below. • Domestic animal fecal matter. • Human fecal matter. • Wildlife fecal matter. • Human activities such as the improper management of trash and green waste and washing of dumpsters at restaurants and grocery stores. • Decomposing organic materials such as leaves, algae, and tree bark.2 • Bacterial regrowth, such as in shaded, damp environments found in some portions of storm drain conveyance systems.2 pH • High pH readings can result from algal photosynthesis and increased water temperature, which removes carbon dioxide from the water. Because carbon dioxide forms carbonic acid when dissolved in water, removal of carbon dioxide from water makes it more basic and results in higher pH readings. Typically the pH increases during daylight hours as sunlight stimulates algal photosynthesis and carbon dioxide is removed from water. In the absence of sunlight, when algae is not photosynthesizing, the carbon dioxide level in the water increases due to biological respiration and physical diffusion of carbon dioxide from air into water, and the pH decreases. Because the solubility of gas in water is inversely proportional to the water temperature, carbon dioxide is less soluble in warmer water. Sunlight heats the shallow, unshaded water in a concrete channel, resulting in lower solubility for carbon dioxide later in the day when the water is warmer. The effects of temperature and algal photosynthesis lead to lower pH values in the morning and higher values in the afternoon. • Concrete washout water is basic since it typically contains limestone which is comprised of compounds of calcium and other minerals. 3 Since it can have a pH close to 12, if allowed to enter the storm drain system it can increase the pH of the water. • Acidic soil 1 http://www.chemetrics.com/products/pdf/detergents.pdf 2 A bacteria regrowth study report was completed in 2010 by the Southern California Coastal Research Water Project and has been presented to the Copermittees for review. The preliminary results of this study provide evidence that a common source of Enterococci may be decaying vegetation and that biofilms within concrete storm drains likely promote bacterial regrowth. The final results of the study will be reported in the 2011/2012 Regional Annual Monitoring Report. 3 U.S. Environmental Protection Agency. Stormwater Best Management Practice: Concrete Washout. N.p.: U.S. Environmental Protection Agency, n.d. Feb. 2012. Web. 1 Oct. 2012. <http://www.epa.gov/npdes/pubs/concretewashout.pdf>. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 53 Nitrate-N • Use of fertilizer containing nitrates. • Groundwater and subsurface flows may contain nitrates in some cases. It can be difficult to determine the exact origin of nitrate in groundwater or subsurface flows, including whether the source is active or historical. Turbidity • Washing and construction activities • Erosion of sediment • Fine suspended particulates in water associated with algal decomposition or other natural conditions. 7.2.2 Investigated Sites During the City of Carlsbad 2012 Dry Weather Monitoring Program, 18 sites required follow-up actions for constituent exceedances. Action levels were exceeded for ammonia-N at six sites, nitrate-N and turbidity at five sites, detergents at four sites, pH at two sites, and fecal coliform bacteria at one site. This section includes applicable field and laboratory analytical results, photographs of selected upstream locations, and the results of upstream investigations. Section 8 of this report also provides a summary of exceedances and investigation results. Site 1C-21 At Site 1C-21, located at an outfall at the southwest side of Jefferson Street where it crosses Buena Vista Creek, ammonia-N measured above the action level of 1.0 mg/L, and turbidity was considered to be in exceedance by BPJ. Evidence of recent uncontained car washing was observed in an upstream residential area (Photo 7-1), and no other apparent source of surface flow was observed. The relatively high turbidity measurement persisted during the confirmation visit; however the ammonia-N concentration measured below the action level, and was likely due to a transient flow. An upstream investigation was initiated to identify the source of the elevated turbidity. Turbid water was collected at the upstream manholes, 5A-18 and 5D-27, on the primary line following Monroe Street, but a direct source was not located during the initial investigation. The investigation resumed the following morning, when the upstream manhole, 5D-27 again had elevated turbidity. An active power washing discharge was observed upstream along the Avenue of the Trees (Photo 7-2). The discharge was eliminated after field crew provided education on storm water best management practices and eliminating illegal discharges to the contractor on site. The contractor reported that power washing had not occurred during the previous few days, but this could not be independently verified. PHOTO 7-1: Evidence of recent car wash discharge observed along Monroe Street, upstream of Site 1C-21, during the routine site visit Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 54 The three primary contributing lines of the storm drain system upstream of Hosp Way and Monroe Street were all investigated, and no additional flows of abnormally turbid water were identified. Location 5D-27 was revisited in the afternoon, and the water was found to be clear with a comparatively low turbidity value. In conclusion, the turbidity exceedances measured at Site 1C-21 were likely the result of washing activities in the upstream residential area along Monroe Street. Measurements recorded during this investigation are presented in Table 7-1 and a map of the sample locations is provided in Figure 7-1. TABLE 7-1 SITE 1C-21 AMMONIA-N AND TURBIDITY UPSTREAM INVESTIGATION RESULTS Visit Date Location Flow (gpm) Ammonia-N (mg/L) Turbidity (NTU) 1C-21 (Routine) 7/6/2012 Outfall at southwest side of Jefferson Street where it crosses Buena Vista Creek 13 1.173 36.06 1C-21 (Confirmation) 7/9/2012 Same as above 10 0.442 49.00 1C-21 (Follow-Up) 7/10/2012 Same as above 8 na 39.18 Upstream Location 5A-18 7/9/2012 Southwest corner of the Marron Road and Monroe Street intersection, west sidewalk of Monroe Street 7 na 111 Upstream Location 5D-27 7/9/2012 Western side of the Monroe Street and Hosp Way intersection 9 na 110 Upstream Location 5D-27 (AM visit) 7/10/2012 Same as above 9 na 896 Upstream Location 5D-27 (PM visit) 7/10/2012 Same as above 9 na 17.44 Upstream Location 10B-28 7/10/2012 At the end of cul-de-sac on Canyon Street 7 na 2.44 Notes: Red values exceed action level; na = not analyzed. PHOTO 7-2: Power washing observed upstream of location 5D-27 Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 55 FIGURE 7-1 SITE 1C-21 AMMONIA-N AND TURBIDITY UPSTREAM INVESTIGATION MAP Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 56 Site 9B-38 Site 9B-38 is located at an outlet on the east side of State Street, south of the Carlsbad Boulevard and State Street intersection. During the routine site visit, the nitrate-N measurement was above the action level of 10.0 mg/L, with a concentration of 10.92 mg/L. No surface flow or apparent source of nitrates was noted. During the confirmation visit the nitrate-N concentration was below the action level at 9.912 mg/L. Therefore the exceedance measured during the routine visit was likely due to a transient flow. Site 19C-1 During the routine site visit to Site 19C-1, located north of the horse stables on Sunny Creek Road, west of College Boulevard and north of El Camino Real, an ammonia-N exceedance at 1.441 mg/L was measured. At the confirmation visit, a cloudy precipitate was noted in the test ampoule for ammonia. Since the conductivity at the site was relatively high (7.22 mS/cm at the routine site visit), it was hypothesized that the elevated conductivity value may have contributed to the formation of a precipitate. The ammonia-N field test method relies on transmittance readings to produce the ammonia-N concentration result, and so an anomalously high ammonia-N reading may have been produced due to interference by the suspended particles. Analysis of the sample after allowing the precipitate to settle below the point where transmittance is read produced an ammonia-N level of 0.510 mg/L. Since no obvious source of ammonia was noted in the immediate vicinity of the site, and the ammonia-N value of the settled sample was below the action level, it was concluded that the initial ammonia-N exceedance was most likely the result of interference with the ammonia-N field test. Sites 27D-17 and 28C-70 Confirmed nitrate-N exceedances were measured at sites 27D-17 and 28C-70, and a confirmed ammonia-N exceedance was measured at Site 28C-70. Due to their close proximity and overlapping upstream area, exceedances at these sites have typically been investigated together. As displayed in Figure 8-2, Site 27D-17 is located downstream of Site 28C-70, and both sites are downstream of commercial and agricultural areas. Since no apparent source of ammonia was observed in the immediate vicinity of the site, an upstream investigation was conducted in order to identify the source of high ammonia-N, and samples were concurrently analyzed for nitrate-N. Results of both investigations are presented below. Ammonia-N Investigation During the investigation of the commercial area immediately upstream of Site 28C-70, several catch basins were outfitted with filter inserts that were full of sediment, trash, and leaves, and were either very damp or had standing water present. It was not possible to determine if water from these catch basins was actively flowing to the site at the time of the visit without removing the inserts. Location 28C-66 (Photo 7-3), along the main line contributing to the site, appeared to be ponded or very slowly moving, contained decomposing leaves and trash, produced a foul odor, and had an ammonia-N concentration of 9.325 mg/L. PHOTO 7-3: Decomposing debris observed at the upstream location, 28C-66 Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 57 While water at this location was observed to be ponded during the upstream investigation, it is likely that this water, as well as flow from the impacted commercial catch basins, contribute to Site 28C-70 when water from over-irrigation or other intermittent flows enters the conveyance. Flows from these locations, where the decomposition of leaves and trash produces ammonia-N as a byproduct, are the most likely sources of the elevated ammonia-N levels measured at Site 28C-70. This is further supported by the fact that additional upstream lines draining the agricultural area and the garden center were found to have ammonia-N levels below the action level, and no surface flow was noted in these upstream areas during the investigation. The results of the upstream investigation and applicable field tests are presented in Table 7-2 and Figure 7-2 is a map of sample locations. Nitrate-N Investigation In previous years, relatively high nitrate-N concentrations at these sites have been attributed to the infiltration of groundwater and/or interflow into the MS4, which may contain elevated nitrate- N levels due to historical fertilizer use. Findings of this investigation were consistent with previous years; specifically, location 27D-17-2 and 35A-45, downstream of the agricultural area and a garden center, had elevated nitrate-N levels in the absence of surface flow anywhere in the vicinity, suggesting that all flow through the conveyance at these points was generated underground. The results of the upstream investigation and applicable field tests are presented in Table 7-2 and Figure 7-2 is a map of sample locations. TABLE 7-2 SITES 27D-17 AND 28C-70 AMMONIA-N AND NITRATE-N UPSTREAM INVESTIGATION RESULTS Visit Date Location Flow (gpm) Nitrate-N (mg/L) Ammonia-N (mg/L) 27D-17 (Routine) 7/24/2012 Southwest corner of parking lot for 5451 and 5431 Avenida Encinas 10 23.79 na 27D-17 (Confirmation) 7/25/2012 Same as above 7 46.96 na 28C-70 (Routine) 7/31/2012 East of I-5, in between 5617 and 5621 Paseo Del Norte, east side of concrete channel 16 51.55 1.324 28C-70 (Confirmation) 8/1/2012 Same as above 19 40.82 3.018 Upstream Location 28C-66 8/1/2012 Southwest corner of the intersection of Paseo Del Norte and the main driveway to the Carlsbad Premium Outlets Ponded 0.541 9.325 Upstream Location 27D-17-2 8/1/2012 Behind Carlsbad Premium Outlets, directly east of the center of the mall 13 46.15 0.126 Upstream Location 35A-45 8/1/2012 In the detention basin at the southernmost entrance to the Carlsbad Premium Outlets, east side of Paseo Del Norte 6 14.55 0.304 Notes: Red values exceed action level; na = not analyzed. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 58 PHOTO 7-4: Decomposing algae, trash, and vegetation observed at Site 29B-44 FIGURE 7-2 SITES 27D-17 AND 28C-70 UPSTREAM INVESTIGATION MAP Site 28C-73 Site 28C-73 is located at an outlet east of I-5, west of the Ken Grody Ford parking lot off Paseo Del Norte, east side of concrete channel. At the routine site visit, the flow rate was approximately 1 gpm and the detergents concentration was 1.5 mg/L, above the action level of 1.0 mg/L. No surface flow or apparent sources of detergents were noted in the vicinity. Since the site was dry during the confirmation visit, this exceedance was attributed to a transient flow. Site 29B-44 A confirmed ammonia-N exceedance was measured at Site 29B-44, located at an outlet behind 1812 Aston Avenue, northeast of the pond. Water within the outlet was slow- moving, with decomposing algae, trash and vegetation present (Photo 7-4). The nearest upstream conveyance at location 29B-39, a manhole in the center of the cul-de-sac at the south end of Van Allen Way, had an ammonia-N concentration below the action level. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 59 In addition, no surface flow or other potential sources of ammonia-N were observed in the investigated upstream areas. It was therefore concluded that the most likely source of the ammonia-N exceedance was the decomposition of trash and organic materials within the slow- moving water at Site 29B-44. The results of the upstream investigation of Site 29B-44 are presented in Table 7-3, and Figure 7-3, on the following page, is a map of the sample locations. TABLE 7-3 SITE 29B-44 AMMONIA-N UPSTREAM INVESTIGATION RESULTS Visit Date Location Flow (gpm) Ammonia-N (mg/L) 29B-44 (Routine) 7/24/2012 Behind 1812 Aston Avenue, northeast of the pond 15 4.860 29B-44 (Confirmation) 8/1/2012 Same as above 15 3.705 Upstream Location 29B-39 8/1/2012 In the cul-de-sac of Van Allen Way 18 0.599 Note: Red values exceed action level. FIGURE 7-3 SITE 29B-44 AMMONIA-N UPSTREAM INVESTIGATION MAP Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 60 Site 30A-38 A nitrate-N exceedance was measured at Site 30A-38, located at a manhole at the Rutherford Road and Aston Avenue intersection, in front of 2110 Rutherford Road. At the routine site visit, the flow rate was 9 gpm and the nitrate-N concentration was 10.60 mg/L. Because the nitrate-N concentration was below the action level at the confirmation visit, and no sources of nitrate were observed in the immediate area, it was concluded that the exceedance was likely the result of a transient flow. Site 35C-85 A confirmed nitrate-N exceedance was measured at Site 35C-85, located at an outlet on the north bank of Encinas Creek, beneath the I-5 overpass. The source of flow to the site is an underground pipe from the north, running along the center divider of the I-5. Nitrate-N exceedances have previously been attributed to the infiltration of groundwater and/or interflow into the MS4, which may have elevated nitrate levels. No additional upstream investigation was performed, as conditions at the site remain consistent with previous years, and there is no accessible portion of the upstream conveyance. The applicable field test results are presented in Table 7-4. TABLE 7-4 SITE 35C-85 NITRATE-N FIELD TEST RESULTS Visit Location Flow (gpm) Nitrate-N (mg/L) 35C-85 (Routine) 7/27/2012 North bank of Encinas Creek, beneath the I-5 overpass 2 39.50 35C-85 (Confirmation) 7/30/2012 Same as above 2 35.78 Note: Red values exceed action level. Site 36B-74 A confirmed detergents exceedance was recorded at Site 36B-74, located at a manhole behind 5600 Dryden Place, inside the Callaway Golf Center, at the end of the private driveway. An upstream investigation was conducted in order to determine the source of the elevated detergents concentration. During the investigation, no surface flow was present and no flow was observed within multiple manholes upstream of the site on the two contributing lines. The upstream manholes, 36B-59 and 36B-73, immediately upstream of the site, were damp. Based on the results of the investigation, it was concluded that the source of flow to the site may be from the percolation of irrigation water along the landscaped hillside in the Callaway Golf Center, since multiple landscape drains were observed in this area. To eliminate the possibility of falsely positive results from interference with the detergents field test, a sample was collected for laboratory analyses, which also had a detergents concentration above the action level. Since flow at the site had dissipated to nearly zero after the confirmation sample was taken, and no surface flow was observed in the upstream area, it is likely that the detergents exceedance was due to a transient flow. The results of the detergents upstream investigation are presented below in Table 7-5 and a map of upstream locations is presented in Figure 7-4. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 61 TABLE 7-5 SITE 36B-74 DETERGENTS UPSTREAM INVESTIGATION RESULTS Visit Date Location Flow (gpm) Detergents (mg/L) 36B-74 (Routine) 8/14/2012 Behind 5860 Dryden Place, inside Callaway Golf Center, at the end of the private drive 5 1.5 36B-74 (Confirmation) 8/14/2012 Same as above 5 1.5 36B-74 (Lab Confirmation) 8/14/2012 Same as above 5 1.7 Upstream Location 36B-59 8/14/2012 At the end of Dryden Place, in cul-de-sac Dry ns Upstream Location 36B-73 8/14/2012 In driveway to Callaway Golf Center Dry ns Notes: Red values exceed action level; ns = not sampled. FIGURE 7-4 SITE 36B-74 DETERGENTS UPSTREAM INVESTIGATION MAP Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 62 Site 36B-95 At Site 36B-95, located within a manhole in the canyon north of 1925 Palomar Oaks Way, ammonia-N measured 5.675 mg/L during the routine site visit. No surface flow or any apparent source of ammonia-N was observed in the upstream area. At the confirmation visit, ammonia-N was below the action level, with a concentration of 0.395 mg/L. The initial exceedance was therefore likely the result of a transient flow. Site 37A-17 During the routine site visit to Site 37A-17, a detergents exceedance of 1.5 mg/L was measured. This site is located within a manhole on Camino Vida Roble, midway between Palomar Airport Road and Owens Avenue. The sample water was yellow in color and had a chemical-like odor. No washing activities or surface flows were observed in the upstream area. At the confirmation visit, the water was clear and odorless with a detergents concentration of 0.50 mg/L. The initial exceedance was therefore attributed to a transient flow. Site 37A-70 During the routine visit to Site 37A-70, a concrete channel northeast of 1949 Palomar Oaks Way, the flow rate was 23 gpm and the turbidity was 41.97 NTU, exceeding normal values based on BPJ. During the confirmation visit, the turbidity measured 12.03 NTU and the flow rate had decreased to 5 gpm. Therefore, the initial exceedance was likely the result of a transient flow. Site 37B-22 At the routine visit to Site 37B-22, located at an outlet near the intersection of Yarrow Drive and Camino Vida Roble, pH was measured at 4.12, below the acceptable minimum of 6.5 pH units. Also, the ammonia-N level was 1.670 mg/L, above the action level. Historically, the site has had low pH levels, which have previously been attributed to the infiltration of groundwater with a low pH into the MS4 conveyance north of location 37B-64. No surface flow or apparent sources of either low pH or high ammonia-N were observed in the upstream area. During the confirmation visit, the flow rate had decreased from 2 gpm to 1 gpm, the pH was 6.69, and the ammonia-N value was 0.805 mg/L. Since neither exceedance was confirmed once the flow rate had decreased, it is likely that the initial ammonia-N exceedance was the result of a transient flow, and the low pH value was due to intermittent infiltration of groundwater with a low pH. Site 42C-92 Site 42C-92 is located within a manhole at Batiquitos Drive, midway between Poinsettia Lane and Daisy Avenue. At the routine site visit, the detergents measurement was greater than 3.0 mg/L and the flow was 4 gpm. Bubbles and foam were observed floating on the water’s surface and the turbidity value was 51 NTU, which exceeded normal parameters for this site. No surface flow or sources of detergents were observed. During the confirmation visit, the detergents concentration was 0.25 mg/L, and the turbidity was 2.44 NTU. Thus, the exceedances measured during the routine visit were likely the result of a transient flow. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 63 Site 45G-13 Site 45G-13, located at an outlet thirty feet southwest of the Melrose Drive and Rancho Santa Fe Road intersection, had a fecal coliform bacteria count of 13,000 MPN/100 mL, equal to the action level. The flow rate was 50 gpm and trash was observed floating on the water’s surface. At the confirmation visit, the flow had lessened to 39 gpm, and the fecal coliform bacteria count was 8,553 MPN/100 mL. Since the exceedance measured during the routine visit was not confirmed, the elevated fecal coliform bacteria level was most likely the result of a transient flow. Site 48D-24 A confirmed turbidity exceedance was measured at Site 48D-24, located within the debris basin outlet to Batiquitos Lagoon. The water was visually observed to be cloudy with a fine white particulate present. An upstream investigation was completed over two days. The nearest flowing conveyance was sampled, location 48D-20, and also had an elevated turbidity measurement, at 27.00 NTU. The immediate upstream drainage area was a residential neighborhood, and no surface flow was observed, however evidence of a white powder discharge from a residence was noted, with white staining in the curb gutters along Columbine Drive near Mallow Court (Photo 7-5). On the second day of investigation, a construction area located upstream of Site 48D-24, just north of Dove Lane and west of El Camino Real was visited. Water observed downstream of the construction activities flowed through a sedimentation basin. The water had a turbidity level of 23.45 NTU where it entered the basin, and a turbidity of 5.03 NTU where it flowed into the MS4. Also, construction personnel indicated the water had only begun to flow on that day. Therefore, this area was determined not to be a source of the high turbidity at Site 48D-24. It is possible, however, that this influx of water may have washed residual particulate material out of the downstream conveyance, which may account for the lower turbidity level over the course of the investigation and further supports the conclusion that the residential discharge was the source of high turbidity at Site 48D-24. A map of upstream locations is presented in Figure 7-5 and the results of the upstream investigation are presented in Table 7-6. PHOTO 7-5: White staining observed in curb gutter along Columbine Drive, upstream of Site 48D-24 Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 64 FIGURE 7-5 SITE 48D-24 TURBIDITY UPSTREAM INVESTIGATION MAP Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 65 TABLE 7-6 SITE 48D-24 TURBIDITY UPSTREAM INVESTIGATION RESULTS Visit Date Location Flow (gpm) Turbidity (NTU) 48D-24 (Routine) 7/30/2012 Debris basin outlet to Batiquitos Lagoon, southwest of the El Camino Real and Arenal intersection 9 57 48D-24 (Confirmation) 8/1/2012 Same as above 18 46.78 48D-24 (Follow-Up) 8/2/2012 Same as above 18 13.37 Upstream Location 48D-20 8/1/2012 South end of Lotus Street, at the Manzanita Street intersection 18 27.00 Upstream Location 48D-21 8/1/2012 North side of Arenal Road, east of Columbine Drive Dry ns Upstream Location 48D-14 8/1/2012 West side of Columbine Drive, north of Arenal Road Dry ns Upstream Location 43D-44 8/2/2012 Inside riser at detention basin, across from the northernmost entrance to the library on Dove Lane, downstream of construction area 8 5.03 Notes: Red values exceed action level; ns = not sampled. Site 62B-4 Turbidity Investigation The turbidity measurement for Site 62B-4, located within a manhole at the Corte Pedro and Camino Alvaro intersection, on the west side of Camino Alvaro was determined to be an exceedance during the routine site visit, since bubbles/foam were observed floating on the water’s surface. Although the water appeared to be clear, the turbidity value was 31.54 NTU. During the upstream investigation conducted after the routine visit, bubbles and foam were seen in a curb gutter at the end of Corte Carolina upstream of the site, where evidence of recent washing was observed. At the confirmation visit the turbidity measurement was 22.30 NTU and was not considered to be an exceedance. No bubbles or foam were present on the water’s surface. The exceedance measured at the routine site visit was likely the result of washing activity in the upstream residential area. pH Investigation Additionally, a low pH was measured at Site 62B-4. This site is the confluence of pipes from three directions: northeast, north, and west. Previous upstream investigations, and an evaluation by the City, have determined that the source of low pH to Site 62B-4 is primarily a PVC connection from the northeast line, which most likely drains groundwater and/or interflow with a low pH that infiltrates the MS4 between location 62B-2 and Site 62B-4. This year, results were largely consistent with this conclusion, since the primary source of flow to the site was observed coming from the north and the northeast, and the flow from the north line (contributing roughly half of the flow to the site) was found to have a pH value within the acceptable range. Conditions this year differed from past years only at upstream location 62B- 12, on the western line, where a flow of approximately less than 1 gpm was contributing to Site 62B-4, and a pH value of 4.58 was measured. There was no surface flow observed in this upstream area, and no evidence of any recent discharges. This drainage line is also very short, Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 66 and lower in elevation than much of the surrounding area. Due to these factors, it seems possible that the source of this water is also from the infiltration of groundwater and/or interflow with low pH into the MS4. The applicable field test results of this investigation are presented in Table 7-7 and a map of upstream sampling locations is presented as Figure 7-6. TABLE 7-7 SITE 62B-4 PH AND TURBIDITY UPSTREAM INVESTIGATION RESULTS Visit Date Location Flow (gpm) pH Turbidity (NTU) 62B-4 (Routine) 8/8/2012 Corte Pedro and Camino Alvaro intersection, west side of Camino Alvaro, in street 27 6.00 31.54 62B-4 (Confirmation) 8/9/2012 Same as above 27 5.07 22.30 62B-4 (Northwest Line) 8/9/2012 Same as above 13 7.39 na Upstream Location 62B-2 8/9/2012 In front of 2934 Corte Pedro Dry ns ns Upstream Location 62B-12 8/9/2012 In front of 2925 Via Pepita <1 4.58 na Notes: Red values exceed action level; na = not analyzed; ns = not sampled. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 67 FIGURE 7-6 SITE 62B-4 UPSTREAM INVESTIGATION MAP Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 68 8.0 SUMMARY 8.1 Summary of Field Screening and Laboratory Analysis Data During the City of Carlsbad 2012 Dry Weather Monitoring Program, 72 monitoring sites were visited, and field screening was conducted at all 59 flowing sites. Fifteen of the field sampling sites were also sampled for laboratory analyses. A total of 23 action level exceedances were measured during routine field screening. However, 14 of these were no longer in exceedance during the subsequent confirmation visit. The constituent with the highest instance of exceedance this year was ammonia-N, with six exceedances measured during routine site visits. Five nitrate-N and five turbidity exceedances were also measured during this year’s monitoring. Appendix A of this report discusses the trash assessment results. Including dry and ponded sites, 29 sites were rated optimal, 36 sites were suboptimal, and 4 sites were rated marginal in the trash assessment. No sites were rated submarginal or poor. The following tables summarize the action level exceedances and conclusions of follow-up investigations, presented by hydrologic area. Agua Hedionda HA Eighteen sites within the Agua Hedionda HA were sampled, including five of which were also designated laboratory sites. Table 8-1 presents a summary of action level exceedances in this watershed. Table 8-2 displays the conclusions based on confirmation and upstream investigations conducted for these sites. TABLE 8-1 AGUA HEDIONDA HA SUMMARY OF ACTION LEVEL EXCEEDANCES Constituent Number of Exceedances Percent of Exceedances Sites Exceeding Action Level Field Screening (18 sampled sites) Ammonia-N 2 11 19C-1, 29B-44 Nitrate-N 1 5.5 30A-38 Laboratory Analyses (5 sampled sites) There were no laboratory analysis exceedances in the Agua Hedionda HA. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 69 TABLE 8-2 AGUA HEDIONDA HA SUMMARY OF FOLLOW-UP INVESTIGATIONS Site Upstream Investigation Target Constituent(s) Results/Probable Source 19C-1 Ammonia-N Ammonia-N field test interference 29B-44 Ammonia-N Decomposition of algae, organic material, and trash in the slow-moving water at the site 30A-38 Nitrate-N Transient flow Buena Vista HA Eight of the City’s 2012 dry weather monitoring sites, located within the Buena Vista HA, were sampled, including two sites that were also designated laboratory sites. Table 8-3 presents a summary of action level exceedances in this watershed. Table 8-4 displays the conclusions based on confirmation and upstream investigations conducted for these sites. TABLE 8-3 BUENA VISTA HA SUMMARY OF ACTION LEVEL EXCEEDANCES Constituent Number of Exceedances Percent of Exceedances Sites Exceeding Action Level Field Screening (8 sampled sites) Ammonia-N 1 12.5 1C-21 Nitrate-N 1 12.5 9B-38 Turbidity 1 12.5 1C-21 Laboratory Analyses (2 sampled sites) There were no laboratory analysis exceedances in the Buena Vista HA. TABLE 8-4 BUENA VISTA HA SUMMARY OF FOLLOW-UP INVESTIGATIONS Site Upstream Investigation Target Constituent(s) Results/Probable Source Field Laboratory 1C-21 Ammonia-N -- Transient flow Turbidity -- Washing activities in the upstream residential area 9B-38 Nitrate-N -- Transient flow Encinas HA Fifteen of the City’s Dry Weather Monitoring sites within the Encinas HA were sampled, three of which were also selected for laboratory analysis. Table 8-5 presents a summary of action level Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 70 exceedances in this watershed. Table 8-6 displays the conclusions based on confirmation and upstream investigations conducted for these sites. TABLE 8-5 ENCINAS HA SUMMARY OF ACTION LEVEL EXCEEDANCES Constituent Number of Exceedances Percent of Exceedances Sites Exceeding Action Level Field Screening (15 sampled sites) Ammonia-N 3 20 28C-70, 36B-95, 37B-22 Nitrate-N 3 20 27D-17, 28C-70, 35C-85 pH 1 7 37B-22 Detergents 3 20 28C-73, 36B-74, 37A-17 Turbidity 1 7 37A-70 Laboratory Analyses (3 sampled sites) There were no laboratory analysis exceedances in the Encinas HA. TABLE 8-6 ENCINAS HA SUMMARY OF FOLLOW-UP INVESTIGATIONS Site Upstream Investigation Target Constituent(s) Results/Probable Source 27D-17 Nitrate-N Infiltration of nitrate-containing groundwater and/or interflow into the MS4 due to historical fertilizer use in the upstream agricultural areas 28C-70 Ammonia-N Intermittent flow from location 28C-66 and various catch basins in the upstream commercial area, which contain decomposing organic material and trash in slow-moving or ponded water Nitrate-N Infiltration of nitrate-containing groundwater and/or interflow into the MS4 due to historical fertilizer use in the upstream agricultural areas 28C-73 Detergents Transient flow 35C-85 Nitrate-N Infiltration of nitrate-containing groundwater and/or interflow into the MS4 36B-74 Detergents Transient flow 36B-95 Ammonia-N Transient flow 37A-17 Detergents Transient flow 37A-70 Turbidity Transient flow 37B-22 Ammonia-N Transient flow pH Infiltration of groundwater with low pH into the MS4 conveyance upstream of location 37B-6 Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 71 San Marcos Creek HA During the City’s 2012 Dry Weather Monitoring Program, 18 sites within the San Marcos Creek HA were sampled, including four of which were designated laboratory sites. Table 8-7 and Table 8-8 summarize the San Marcos Creek exceedances and follow-up investigation conclusions. TABLE 8-7 SAN MARCOS CREEK HA SUMMARY OF ACTION LEVEL EXCEEDANCES Constituent Number of Exceedances Percent of Exceedances Sites Exceeding Action Level Field Screening (18 sampled sites) pH 1 5.5 62B-4 Detergents 1 5.5 42C-92 Turbidity 3 17 42C-92, 48D-24, 62B-4 Laboratory Analyses (4 sampled sites) Fecal Coliforms 1 25 45G-13 TABLE 8-8 SAN MARCOS CREEK HA SUMMARY OF FOLLOW-UP INVESTIGATIONS Site Upstream Investigation Target Constituent(s) Results/Probable Source Field Laboratory 42C-92 Detergents, Turbidity -- Transient flow 45G-13 -- Fecal Coliforms Transient flow 48D-24 Turbidity -- Recent residential discharge 62B-4 pH -- Groundwater with low pH entering the MS4 conveyance Turbidity -- Washing activities in the upstream residential area Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE 72 9.0 REFERENCES California Regional Water Quality Control Board, San Diego Region. 1994. Water Quality Control Plan for the San Diego Basin. California Regional Water Quality Control Board, San Diego Region. January 24, 2007. Order No. R9-2007-0001. California Regional Water Quality Control Board, San Diego Region and EPA. October 11, 2011. 2010 Integrated Report (Clean Water Act Section 303(d) List / 305(b) Report. http://www.waterboards.ca.gov/water_issues/programs/tmdl/integrated2010.shtml EPA. May 18, 2000. Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California. 40 CFR Part 131. EPA. May 27, 2009. Multi-Sector General Permit for Storm Water. Appendix 7.2 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")!!!!!! !! !!!! !! !!!! !! !! * * * * * ** ")* * ") * * !! !! * !! !! * ") !!I-5 SBI-5 NBS R -7 8 E B SR-78 WB ALGA 01STEL CAMI NO REALCARLSBADLA COSTA PALOMAR AIRPORT W VISTA VISTA WY TA M A R A C K COLLEGELEUCADIA FARADAYLAKE BLVD POINSETT IA ENCINITAS M ELRO SEC A R L S B A D V I L L A G E CANNON RANCHO SANTA FESHADOW RIDGECOASTMARRON SYCAMORE VULCANBUSINESS PARKM A R V I S T AEMERALD SAN ELI J O RDR A M P VISTA VISTA VILLAGEOLIVESAN MARCOS V I S TA W Y CANNON MELROSEMELROSECOLLEGEPOINSETTIA BATIQUITOS LAGOON AGUA HEDIONDA LAGOON BUENA VISTA LAGOON SQUIRES DAM CALAVERAS LAKE BUENA VISTA AGUA HEDIONDA SAN MARCOS ENCINITAS904.51 904.31 904.21 904.40 904.61 904.22 904.32 904.52 5A-4 9B-7 36B-6 36B-4 5A-14 6C-23 6C-34 62B-4 47C-5 25D-2 35A-12 46D-87 22B-11 48C-25 36B-95 37B-1937B-22 37A-17 37C-28 37A-70 37C-29 35C-85 47D-25 59C-90 58A-13 55A-51 49D-12 45C-12 45A-45 44B-45 41D-32 51B-19 11D-50 17C-83 31B-34 11B-48 11B-46 17B-46 17B-47 28C-70 27B-75 27B-47 18D-33A 27D-31A 1D-20 9B-38 19C-1 35C-11 45G-13 55A-62 48D-24 42C-92 29B-4427D-17 21C-14 16C-61 48A-165 6B-4 1C-21 18D-6 17D-7 17B-8 1D-21 59C-95 55C-25 49C-55 36B-74 36B-43 30A-38 30A-16 17B-52 17D-37 28C-73 35C-51A Legend !!Field Screening Sites ")Laboratory Sampling Sites *Alternate Sites Rivers/Creeks Lakes/Lagoons MS4 Conveyance MS4 Structures Roads City Boundary %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % %%%%%%% % %%%%%%% % %%%%% Hydrologic Areas 0 0.5 10.25 Miles . Base Data Sources: SanGIS and City of Carlsbad Figure A City of Carlsbad Dry Weather Monitoring Locations Drawn By: BM Checked By: Date: 10/9/2012 D-MAX Engineering, Inc. Appendix 7.2 FIGURE B WATERSHED MAP OF THE CARLSBAD AREA, BROKEN INTO HYDROLOGIC SUBAREAS Appendix 7.2 Appendix A Trash Assessment Appendix 7.2 CITY OF CARLSBAD 2012 TRASH ASSESSMENT PAGE A-1 APPENDIX A -TRASH ASSESSMENT A.1 Regulatory Requirements Section II.B.3.C.(7) of the Municipal Permit’s Receiving Waters and Urban Runoff Monitoring and Reporting Program requires Copermittees to assess the presence of trash in receiving waters and urban runoff at each dry weather monitoring site. This trash assessment program is designed to provide information on the spatial extent and relative amount of trash present, as well at the nature and origin of the trash at the site. A.2 Procedure and Definitions The San Diego Copermittee Dry Weather Monitoring Sub-workgroup developed a Trash Assessment Form to document the amount and extent of trash at each evaluated site. The form categorizes the site into one of five trash categories: optimal, suboptimal, marginal, submarginal, or poor. The form also addresses any potential threats that the trash may pose to human or aquatic health. For sites rating submarginal or poor, the form includes a section to record types, prevalence, potential routes, and sources of trash. A qualitative estimate of the abundance of trash is made based upon a general impression of the site. The Trash Assessment Form’s five categories are primarily qualitative descriptions of the amount and extent of trash, although a number of trash pieces is also included in each category as a rough guideline. The five categories are defined as follows. • Optimal: On first glance, no trash visible. Little or no trash (<10 pieces) evident when evaluated area is closely examined for litter and debris. • Suboptimal: On first glance, little or no trash visible. After close inspection small levels of trash (~10-50 pieces) evident in evaluated area. • Marginal: Trash is evident in low to medium levels (~51-100 pieces) on first glance. Evaluated area contains litter and debris. Evidence of site being used by people: scattered cans, bottles, food wrappers, blankets, or clothing present. • Submarginal: Trash distracts the eye on first glance. Evaluated area contains substantial levels of litter and debris (~100-400 pieces). Evidence of site being used frequently by people: many cans, bottles, food wrappers, blankets, or clothing present. • Poor: Site is significantly impacted by trash. Evidence of trash accumulation behind a constriction point or evidence of excessive dumping. Evaluated area contains substantial levels of litter and debris (>400 pieces). The threat to human health and threat to aquatic health is assessed at each site using the following definitions: • Threat to Human Health – Presence of more than one of, or a combination of the following items: hypodermic needles or other medical waste; used diapers, animal waste, or human feces; any toxic substance such as chemical containers, vehicle batteries, or fluorescent light bulbs. Alternatively high prevalence of any one item (e.g. Greater than 50 items that present a puncture or laceration hazard); or observations of mosquito larvae directly observed in water ponded due to trash. All subject to best professional judgment. Appendix 7.2 CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE A-2 • Threat to Aquatic Health – Large amount* of persistent, buoyant litter such as: hard or soft plastics, balloons, Styrofoam (equivalent to a cup), or large amounts of settleable, degradable, and nontoxic debris; cigarette butts. Presence of more than one of, or a combination of the following items: toxic items such as vehicle batteries, or spray cans; any evidence of large clumps of yard waste from landscape maintenance such as yard waste or dumped leaf litter (not naturally occurring). All subject to best professional judgment. *Large amount is defined as 50 pieces or more. In the event that a site is noted as potentially posing a threat to human or aquatic health, additional descriptive comments are recorded in the “Comments” section of the Trash Assessment Form. If a site is labeled as submarginal or poor, it is assessed for types of trash present (e.g., automotive, biohazard, food waste), which are ranked based on their prevalence and the potential threat to water quality they pose. Lastly, the potential mechanism through which trash reached the site (e.g., dumping, littering, upstream sources) and the potential source of the trash (e.g., construction, commercial, transient) are identified. A.3 Trash Assessment Results During the 2012 Dry Weather Monitoring Program, 69 sites in the City of Carlsbad received a trash assessment. Of these sites, 29 received an optimal trash assessment rating, 36 were rated suboptimal, and four sites received a marginal trash rating. No sites were rated as submarginal or poor. Additionally, no sites were determined to pose a threat to human or aquatic health. Graph A-1 and Table A-1 summarize the trash assessment results. Figure A-1 displays the corresponding trash ratings for sites located in the northern portion of the City, Figure A-2 displays the trash ratings for sites located in the central part of the City, and Figure A-3 is a map showing trash ratings for sites within the southern portion of the City. Appendix 7.2 GRAPH A-1 TRASH ASSESSMENT SUMMARY CITY OF CARLSBAD 2012 TRASH ASSESSMENT PAGE A-3 43% 51% 6% 0% 0% 0% 25% 50% 75% 100% Optimal Suboptimal Marginal Submarginal PoorPercent of SitesTrash Ranking TABLE A-1 TRASH ASSESSMENT RESULTS Optimal (29 sites) Suboptimal (36 sites) Marginal (4 sites) Submarginal (0 sites) Poor (0 sites) 5A-4 42C-92 1C-21 36B-6 11B-48 6B-4 44B-45 1D-20 37A-17 16C-61 6C-34 45C-12 1D-21 37B-19 29B-44 17B-46 46D-87 5A-14 37C-28 55A-51 17B-47 47D-25 6C-23 37C-29 17D-37 48A-165 9B-7 45A-45 18D-6 55A-62 9B-38 45G-13 18D-33A 59C-90 11B-46 47C-5 25D-2 11D-50 48C-25 27B-47 17B-8 48D-24 27D-17 17C-83 49D-12 28C-70 17D-7 51B-19 28C-73 19C-1 55C-25 30A-38 21C-14 58A-13 31B-34 22B-11 62B-4 35C-51A 27B-75 36B-74 27D-31A 36B-95 35A-12 37A-70 35C-11 37B-22 35C-85 41D-32 36B-4 Appendix 7.2 FIGURE A-1 TRASH ASSESSMENT MAP – NORTH CITY CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE A-4 Appendix 7.2 FIGURE A-2 TRASH ASSESSMENT MAP – CENTRAL CITY CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE A-5 Appendix 7.2 FIGURE A-3 TRASH ASSESSMENT MAP – SOUTH CITY CITY OF CARLSBAD 2012 DRY WEATHER MONITORING PROGRAM PAGE A-6 Appendix 7.2 Appendix B Historical Dry Weather Data Tables Appendix 7.2 City of Carlsbad Dry Weather Historical DataSite IDAH-02AH-03AH-04AH-05AH-05AAH-08AH-09AH-10AH-11AH-12AH-13AH-15AH-17AH-18AH-24AH-26AH-27AH-28AH-28AAH-29AH-30AH-31AH-32AH-45AH-46AH-56AH-59AH-61BA-02BA-03BA-03ABA-04BA-04ABA-05BA-06BA-07BA-13BA-16BA-26BA-27BA-311995pH na nana8 na 9.5 8 8 7.7 na na na 7.9 7.8 9.4 7.1 9 8.1 8.3 na 8 8.7 8.3 na 7.6 na 8.3 7.2na 8 7.8 na na na na 7.7 na 8.4Temperature, °C na nana19.4 na 27.7 24.6 22.5 22.1 na na na 22.9 22.8 31 24 29.3 25 24 na 28 23.6 25 na 23.9 na 24 23.3na 24.5 24.9 na na na na 24 na 24Ammonia, mg/L na nana0.05 na 0.02 0.16 0.25 0.04 na na na 0.14 0.05 0.06 0.07 0.17 0.06 0.02 na 0.02 0.06 0.2 na 0.05 na 0.2 0.04na 0.1 0.04 na na na na 0.12 na ndDetergents, mg/L na nana0.25 na 1 0.5 15 0.75 na na na 0.5 0.25 0.25 0.5 0.75 <.25 0.25 na 0.25 0.25 nd na 0.75 na 0.5 0.5na 1.5 0.5 na na na na 0.75 na 0.5Chlorine, mg/L na nana0.6 na 0.6 0.4 1 0.3 na na na 0.4 0.5 0.2 0.8 0.6 0.2 0.4 na 0.1 0.1 0.8 na 0.3 na 0.3 0.4na 0.8 0.4 na na na na 0.2 na 0.6Copper, mg/L na nanand na nd nd nd nd na na na nd nd nd nd nd nd nd na nd nd nd na nd na nd ndna nd nd na na na na nd na ndPhenols, mg/L na nanand na nd nd nd nd na na na nd nd nd nd nd nd nd na nd nd nd na nd na nd ndna nd nd na na na na nd na nd1996pH7.9 9na8.1 na 8 8.7 7.8 7.5 8.1 na 8.1 7.8 7.9 9.3 7.9 9 na na 9.6 8.5 8.4 na na 7.4 na 8.36 78.367.7 8.2 na 8.6 na 7.7 8.4 8.1Temperature, °C 21.9 27.8na20.9 na 22.4 24 24 24.2 24.9 na 24.3 29.4 25.8 29.7 27.7 28.1 na na 23.5 29.6 22.4 na na 24.9 na 23.6 2425.626.5 26.2 na 22.8 na 25.1 21.8 28.6Ammonia, mg/L nd ndna0.33 na 0.05 0.02 0.01 0.54 0.04 na nd 0.01 0.05 0.08 0.02 0.04 na na nd 0.06 0.02 na na 0.07 na 0.22 0.060.020.07 nd na 0.65 na 0.07 0.04 0.26Detergents, mg/L 1 0.75na0.25 na 0.5 2 2 0.5 0.25 na 0.5 0.25 0.25 0.25 0.25 0.25 na na 1 0.25 0.5 na na 0.5 na 0.75 0.50.750.75 0.5 na 1.75 na 0.75 0.5 0.5Chlorine, mg/L 0.6 1.5na0.4 na 0.3 0.1 0.4 0.6 0.6 na 0.6 0.6 0.6 0.6 1 0.6 na na 0.6 0.6 0.6 na na 1 na 0.1 <.10.1nd nd na nd na 0.2 0.3 0.2Copper, mg/L nd ndnand na nd nd nd nd nd na nd nd nd nd nd nd na na nd nd nd na na nd na nd ndndnd nd na nd na nd nd ndPhenols, mg/L nd ndnand na nd nd nd nd nd na nd nd nd nd nd nd na na nd nd nd na na nd na nd ndndnd nd na nd na nd nd nd1997pHna7.74na7.697.66na8.578.198.667.66nana7.837.79nana7.677.79na7.977.698.27.98na8.117.29na8.197.04na8.178.09na8.648.19na8.078.228.02pHna7.74na7.697.66na8.578.198.667.66nana7.837.79nana7.677.79na7.977.698.27.98na8.117.29na8.197.04na8.178.09na8.648.19na8.078.228.02Temperature, °C na 24.3na 24 22.7 na 27 28.1 25.6 22 na na 25.4 23.7 na na 34.1 27.4 na 26.6 24.8 29.7 26 na 28.1 24.6 na 25 25.1 na 29.627.6 na 24.5 28 na 30.4 26.8 25.3Ammonia, mg/L na 2.28na 0.55 0.32 na nd nd 0.08 0.01 na na 0.56 0.98 na na 0.02 nd na 0.09 4.11 0.02 0.07 na 0.1 0.01 na 0.02 nd na 0.040.02 na 0.02 0.07 na 0.33 10.7 ndDetergents, mg/L na 1.5na 0.25 0.25 na 0.25 6 6 0.5 na na 0.25 0.25 na na 0.25 0.25 na 0.25 1 <.25 0.25 na 0.5 0.5 na 0.25 0.25 na 0.50.25 na 0.25 0.25 na 0.5 0.25 0.5Chlorine, mg/L na 0.3na 0.2 0.2 na 0.3 0.3 0.3 0.6 na na 0.3 0.2 na na 0.1 0.3 na 0.6 0.3 0.3 0.2 na 0.4 0.2 na 0.1 0.6 na 0.60.1 na nd 0.1 na 0.1 0.2 0.1Copper, mg/L na ndna nd nd na nd 0.3 0.2 nd na na nd nd na na nd nd na nd nd nd nd na 0.2 nd na nd nd na ndnd na nd nd na nd nd ndPhenols, mg/L na ndna nd nd na nd nd nd nd na na nd nd na nd nd na nd nd 0.1 nd nd na nd nd na nd nd na ndnd na nd nd na nd nd nd1998pH6.7 6.98.1 7.78.5 7.7 7.8 87.4 9.2 7.7 na 6.8 88.2 8.5 7.6 7.48.4 7.57.67.77.97.77.8 8.2 7.7Temperature, °C24 1422 1922 21 25 2322 26 20 na 19 1821 21 22 2324 231926232023 22 17Ammonia, mg/L0.6 nd0.4 0.41 0.6 10 0.31 0.2 1 na 0.6 0.60.4 4 0.4 0.60.1 0.30.40.60.310.6 1 0.6Detergents, mg/L0.25 0.50.5 0.250.5 3 3 1.50.5 1 0.75 na 0.5 0.40.25 3 0.25 0.380.25 0.50.250.40.40.50.5 1.5 0.5Chlorine, mg/L0.4 nd0.1 nd0.3 0.1 0.1 0.1nd nd 0.15 na nd 0.2nd nd 0.2 0.1nd ndndndndndnd nd ndCopper, mg/Lnd ndnd ndnd nd nd ndnd nd nd na nd ndnd nd nd ndnd ndndndndndnd nd ndPhenols, mg/Lnd ndnd ndnd nd nd nd0.1 0.2 0.1 na 0.2 0.2nd 0.2 0.1 ndnd 0.2ndndndnd0.2 nd 0.21999pHna 9.1 8.8 na na 8 na 8.1 8.1 8.4 8.1 8.7 8.4 8.2 8.2 7.7 8.7 na 8 na 7.7 7.9 8.3 8.6 8.4 8.6 7.9 9.8 8.1 8 7.8 7.7na 7.8 8.8 8 na 8.1 8.4 8.3Temperature, °C na 29 30 na na 22 na 22 24 24 22 31 25 24 29 23 18 na 27 na 22 23 26 27 23 24 21 24 23 21 21 23na 26 24 21 na 25 24 24Ammonia, mg/L na 0.3 1 na na 1.5 na 0.3 0.8 10 0.1 0.2 7 1 0.3 0.3 0.2 na 0.2 na 0.8 1 0.2 0.3 1 0.2 0.4 0.5 0.2 0.2 4.5 0.2na 0.4 1.5 0.2 na 0.1 1 0.3Detergents, mg/L na 0.25 0.75 na na 0.5 na 0.5 0.5 >3.0 0.75 0.5 0.25 2 0.5 0.5 0.25 na 0.25 na 0.25 >3.0 0.5 0.25 1.5 0.25 0.5 1.5 0.5 0.25 0.5 0.25na 1.5 >3.0 0.5 na 0.5 0.5 0.25Chlorine, mg/L na 0.3 0.6 na na 0.3 na nd nd 0.3 0.2 0.1 nd 0.2 0.5 0.1 nd na nd na 0.05 0.2 nd nd 0.6 0.2 0.1 0.6 0.2 0.1 nd 0.3na 0.2 nd nd na 0.2 0.2 0.1Copper, mg/L na 0.1 0.2 na na 0.1 na nd 0.1 0.5 nd nd 0.1 0.2 0.1 nd nd na nd na nd 0.2 0.1 0.1 nd nd nd nd 0.1 0.2 nd ndna 0.1 0.2 0.1 na 0.1 0.2 0.1Copper, mg/Lna0.10.2nana0.1nand0.10.5ndnd0.10.20.1ndndnandnand0.20.10.1ndndndnd0.10.2ndndna0.10.20.1na0.10.20.1Phenols, mg/L na 0.1 0.2 na na nd na nd 0.2 0.3 nd nd nd nd 0.3 0.2 nd na nd na nd nd 0.1 0.2 0.4 nd 0.4 nd 0.1 0.1 0.1 ndna 0.1 0.1 0.3 na 0.2 0.1 0.22000pH10 7.8na 7.59.1 7.5 7.4 7.3 na na 7.8 7.5 7.4 8.2 8.1 8.37.88.8 8.3 7.7 8.2 7.6 8.0 8.0 7.0 na nana 8.2 7.7 7.87.7 na 8.0Temperature, °C31 12na 2430 23 23 23 na na 23 21 23 21 31 292328 23 24 24 21 24 22 23 na nana 23 24 2425 na 25Ammonia, mg/L1.0 10na 0.90.2 0.7 0.8 0.1 na na 0.4 0.2 0.6 1.5 0.1 0.10.50.2 0.2 0.2 0.1 0.2 0.4 0.3 0.8 na nana 3.0 >10 0.80.8 na 0.4Detergents, mg/L1.0 1.0na 0.250.5 1.5 >3.0 1.5 na na 0.25 0.25 0.25 1.0 0.25 0.250.250.25 0.25 0.25 0.25 0.25 0.5 0.25 0.25 na nana 0.25 0.25 0.250.25 na 0.25Chlorine, mg/L0.2 ndna 0.10.1 nd nd 0.2 na na 0.1 nd nd 0.1 nd 0.1ndnd nd nd nd nd nd nd nd ba bana nd nd ndnd na ndCopper, mg/L0.2 ndna nd0.2 nd nd 0.1 na na 0.1 nd nd nd nd 0.10.1nd nd nd nd nd nd 0.1 0.1 na nana 0.1 nd ndnd na 0.1Phenols, mg/Lnd 0.1na ndnd nd 0.1 nd na na 0.1 nd 0.1 nd nd ndndnd 0.1 nd nd nd 0.1 nd nd na nana 0.2 nd 0.1nd na 0.12001pH7.7 7.9na 7.1 7.1 8 8.2 7.6 6.9 na na 7.3 7.3 7.1 7.5 7.8 7.67.4 7.5 8.2 7.8 7.1 7.9 7.1 7.5 7.9 7.4 na 7.4na 7.4 7.8 7.67.7 7.7 7.8Temperature, °C23 28na 23 23 24 23 22 22 na na 21 27 20 20 29 2620 21 26 24 20 25 20 24 22 22 na 25na 25 22 2225 23 24Ammonia, mg/L0.5 1.0na 0.6 0.5 0.5 0.4 0.4 0.3 na na 0.6 0.6 0.8 1.5 0.5 0.30.6 0.6 0.2 0.4 0.2 0.2 0.3 0.2 0.2 0.4 na 3na 2 0.8 0.70.4 0.8 0.4Detergents, mg/L0.75 3na 0.25 0.25 3 0.75 3 0.75 na na 0.25 0.5 0.5 0.5 0.5 0.250.25 0.75 0.25 0.25 0.5 0.25 0.5 0.5 0.25 0.5 na 0.25na 2 0.5 0.50.25 0.25 0.25Chlorine, mg/L0.8 0.4na nd nd nd nd nd 0.8 na na nd 0.5 nd nd nd ndnd nd 0.1 nd nd nd 0.3 0.6 nd 0.6 na 0.2na nd nd ndnd nd ndCopper, mg/Lnd ndna nd nd nd nd nd nd na na nd nd nd nd nd ndnd nd nd nd nd nd nd nd nd nd na ndna nd nd ndnd nd ndPhenols, mg/Lnd ndna nd nd nd nd nd nd na na nd 0.1 nd nd nd ndnd nd nd 0.1 0.1 nd 0.1 0.1 nd nd na 0.2na nd nd ndnd nd ndNotes: na = not analyzed; nd = not detectedAppendix 7.2 City of Carlsbad Dry Weather Historical DataSite IDBA-32BA-34BA-36BA-40BA-41BA-43BA-46BA-47BA-48BA-48ABA-49BV-02BV-03BV-04BV-04ABV-06BV-07BV-08BV-09BV-09ABV-10BV-14EN-02AEN-02BEN-02CEN-09EN-11EN-13EN-14EN-14AEN-16EN-17EN-18EN-19EN-20EN-21EN-22EN-22AEN-23EN-23AEN-24EN-30EN-311995pH na 8.4 8.1 7.8 7.7 na na 6.8 nana na na na na na 7.9 nana 8.1 7.9 8.97.7 na na na 4.7 7.7 na 6.8 7.6 8.1 8.7 na na 7.6 nanaTemperature, °C na 25 22.2 24 24.2 na na 23.9 nana na na na na na 22.3 nana 23.9 23.2 25.421.1 na na na 21.8 25.6 na 22.2 26.6 31.9 24 na na 21.7 nanaAmmonia, mg/L na 0.5 0.24 0.03 0.05 na na 0.44 nana na na na na na 0.14 nana 0.27 0.07 0.10.12 na na na 0.61 0.23 na 0.42 0.23 0.08 0.1 na na 0.16 nanaDetergents, mg/L na 0.5 1 0.5 0.75 na na 0.75 nana na na na na na 0.5 nana 0.25 0.5 0.50.5 na na na 0.75 0.75 na 1 0.5 0.75 0.5 na na 0.5 nanaChlorine, mg/L na 0.6 0.3 0.3 <.1 na na 0.6 nana na na na na na 0.6 nana 0.6 0.6 0.30.2 na na na 0.2 0.6 na <.01 0.6 0.4 0.4 na na 0.6 nanaCopper, mg/L na nd nd nd nd na na nd nana na na na na na nd nana nd nd ndnd na na na nd nd na nd nd nd nd na na nd nanaPhenols, mg/L na nd nd nd nd na na nd nana na na na na na nd nana nd nd ndnd na na na nd nd na nd nd nd nd na na nd nana1996pHna 8.2 8.1 8 7.7 7.8 na 6 8.3na na na na na na 8 na6.7 7.8 8 8.97.6na na 4.3 7.7 7.7 7.1 7.5 7.9 8.4 7.57.28.1 na naTemperature, °C na 22.8 23.1 23 25.4 23.1 na 24.9 25.1na na na na na na 23.8 na23.6 25.9 23.6 25.523.4na na 21.9 23.6 24.3 22.3 24.9 22.9 26.2 24.223.826 na naAmmonia, mg/L na 0.45 0.03 0.05 0.03 0.24 na 0.49 0.13na na na na na na 0.03 na0.03 nd 0.2 0.070.05na na 0.02 0.06 0.01 nd 0.01 0.5 0.9 0.050.02nd na naDetergents, mg/L na 0.25 0.5 0.25 0.75 0.5 na 0.5 0.5na na na na na na 0.5 na1.5 0.25 0.5 0.50.25na na 2 0.25 0.25 0.5 0.75 0.75 1 0.50.250.25 na naChlorine, mg/L na nd 0.2 nd 0.1 0.2 na nd ndna na na na na na 0.6 na0.8 0.6 0.6 0.10.1na na 0.6 0.2 0.1 nd 0.2 nd 0.3 0.10.10.3 na naCopper, mg/L na nd nd nd nd nd na nd ndna na na na na na nd nand nd nd ndndna na nd nd nd nd nd nd nd ndndnd na naPhenols, mg/L na nd nd nd nd nd na nd ndna na na na na na nd nand nd nd ndndna na nd nd nd nd nd nd nd ndndnd na na1997pH8.277.48.268.078.137.84na5.169.779.137.67na7.79na7.86na7.768.02na6.448.048.399.887.577.2na4.188.72na6.698.896.945.6nana4.426.92na7.25pH8.277.48.268.078.137.84na5.169.779.137.67na7.79na7.86na7.768.02na6.448.048.399.887.577.2na4.188.72na6.698.896.945.6nana4.426.92na7.25Temperature, °C 29.5 29 23.8 27.7 24.9 29 na 28.2 23.625.9 24.7 na 28.3 na 25.8 na 25.8 26.5 na 24.6 24.1 25.3 3226.225.3 na 23.2 27.4 na 22.4 27.8 22.4 25.8 na na 23.728.6 na 26Ammonia, mg/L 0.02 0.02 0.04 3.41 0.07 4.34 na 0.2 0.890.02 0.56 na nd na nd na 0.05 0.38 na 0.18 1.29 4.03 0.050.053.01 na 0.57 0.05 na 4.38 0.03 0.14 2.65 na na 0.780.07 na 0.03Detergents, mg/L 0.5 0.25 0.5 0.75 0.75 0.5 na 0.75 1<.25 0.25 na <.25 na <.25 na 1 <.25 na 0.75 3 0.25 0.50.751 na 3 0.25 na 1.98 0.25 0.25 1 na na 0.751 na 0.5Chlorine, mg/L 0.6 0.1 0.1 0.2 nd 0.1 na 0.2 0.20.1 nd na 0.2 na 0.3 na 0.3 0.3 na 0.4 0.2 0.2 0.20.2nd na 0.1 0.2 na nd 0.6 0.1 0.1 na na 0.10.2 na ndCopper, mg/L nd nd nd nd nd nd na nd ndnd nd na nd na nd na nd nd na nd nd nd ndndnd na nd nd na nd nd nd nd na na ndnd na ndPhenols, mg/L nd nd nd nd nd nd na nd ndnd nd na nd na nd na nd nd na nd 0.1 nd ndndnd na nd nd na nd nd nd nd na na ndnd na nd1998pH7.5 8.2 8.1 7.9 7.5 7.3na 7.8109.8 8.47.6 8.2 7.5 10.77.7na 5.1 4.5 7.96.9 8.3 7.4 7.14.17.37.7Temperature, °C 23 20 20 21 22 22na 222121 2218 23 20 2720na 22 20 2019 20 21 23202022Ammonia, mg/L 0.3 0.3 0.6 0.8 0.3 2na 0.60.60.6 0.61 1.5 0.4 0.20.6na 0.6 0.8 0.40.8 0.3 0.8 103.50.61Detergents, mg/L 0.25 0.5 0.5 0.4 0.75 0.3na 0.250.50.5 0.40.25 0.63 0.4 0.50.38na 0.75 0.75 0.250.5 0.5 0.5 1.250.750.251.5Chlorine, mg/L nd 0.1 nd nd nd ndna 0.2nd0.1 ndnd 0.1 nd 0.1ndna nd nd 0.1nd nd nd ndndndndCopper, mg/L nd nd nd nd nd ndna ndndnd ndnd nd nd ndndna nd nd ndnd nd nd nd0.2ndndPhenols, mg/L nd 0.3 0.2 0.1 0.1 ndna ndndnd ndnd nd nd nd0.3na 0.2 0.1 0.10.4 0.2 0.2 0.310.20.41999pH7.8 7.7 8.1 8.2 7.9 9.2 na 6.3 8.6 na 8.2 8.1 na na 7.7 8.2 na 8.2 8.58.2 8.2 8.4 9.77.78 8.1 5.2 8.3 na 7.4 8.1 7.8 8 na na 5.68.1 na 7.8Temperature, °C 24 23 23 24 25 27 na 24 23 na 23 21 na na 26 23 na 25 2222 27 24 292225 21 23 25 na 20 23 23 22 na na 2324 na 22Ammonia, mg/L 4 0.1 0.3 0.2 0.6 1 na 2 1.5 na 0.3 2 na na 0.2 0.1 na 0.8 0.20.2 0.3 0.6 0.30.30.6 4 0.6 0.3 na 0.4 0.2 0.5 0.2 na na 0.20.8 na 0.1Detergents, mg/L 0.25 0.25 0.5 0.25 0.5 0.5 na 0.5 0.25 na 0.5 >3.0 na na 0.75 0.25 na 0.25 0.80.5 0.25 0.75 0.750.751.5 >3.0 0.75 0.25 na 0.5 0.25 0.5 0.5 na na 0.250.25 na 0.5Chlorine, mg/L 0.2 0.6 0.1 nd 0.1 0.3 na 0.2 0.3 na nd 0.1 na na 0.4 0.1 na 1 0.50.15 0.1 0.6 0.60.30.2 0.1 nd 0.2 na nd 0.1 nd 0.2 na na nd0.3 na 0.2Copper, mg/L 0.2 0.1 nd nd 0.2 0.2 na 0.3 0.1 na nd <0.1 na na nd 0.1 na 0.2 nd0.1 nd 0.2 0.1ndnd 0.2 nd 0.1 na 0.1 nd 0.1 0.1 na na nd0.1 na ndCopper, mg/L0.20.1ndnd0.20.2na0.30.1nand<0.1nanand0.1na0.2nd0.1nd0.20.1ndnd0.2nd0.1na0.1nd0.10.1nanand0.1nandPhenols, mg/L 0.1 0.1 0.3 0.2 0.1 0.1 na 0.3 0.1 na 0.1 <0.1 na na 0.3 nd na 0.3 0.10.2 nd nd nd0.30.1 nd 0.4 0.2 na 0.2 0.1 0.4 0.1 na na nd0.4 na 0.32000pH7.3 7.5 7.9 7.8 7.5 7.36.3 7.47.3 7.67.0 7.87.7 8.17.7 8.0 8.0 8.57.37.4 8.1 4.6 7.56.9 7.4 7.2 6.74.37.27.2Temperature, °C 26 25 23 24 24 2524 2322 2025 2423 2323 25 28 322224 31 23 2923 29 23 24232722Ammonia, mg/L 0.3 0.3 0.4 0.8 0.8 3.01.0 0.80.3 0.80.2 0.40.3 0.10.4 0.5 0.2 0.20.40.8 0.8 0.6 0.81.5 0.8 3.5 3.04.00.30.3Detergents, mg/L 0.25 0.25 0.25 0.25 0.25 0.250.25 0.250.25 0.250.5 0.250.25 0.250.25 0.25 0.25 0.250.250.25 0.5 0.5 0.250.25 0.25 0.5 >3.00.750.250.25Chlorine, mg/L 0.1 nd nd nd nd nd0.1 ndnd nd0.1 ndnd 2.5nd 0.1 0.9 ndndnd nd 0.1 0.1nd nd nd <0.10.4ndndCopper, mg/L 0.1 nd nd nd nd 0.10.1 ndnd nd0.1 nd0.1 ndnd nd nd nd0.10.1 nd 0.1 nd0.1 nd 0.1 0.020.1nd0.1Phenols, mg/L nd nd nd nd 0.1 0.1nd 0.1nd 0.1nd 0.10.1 nd0.1 0.1 nd 0.10.10.1 nd 0.2 nd0.1 nd 0.1 0.20.10.10.12001pH7.4 7.6 7.9 7.9 7.4 6.84.7 7.57.7 7.16.8 7.47.4 7.47.3 7.6 7.6 8.3 7.5 77.5 4.1 7.56.7 7.6 6.9 6.84.86.96.1Temperature, °C 23 24 23 22 24 2222 2323 2023 2121 2019 22 24 24 21 2021 21 2421 25 21 22232421Ammonia, mg/L 0.8 0.2 0.3 0.5 0.6 0.80.5 0.50.1 0.60.2 10.3 0.20.4 0.3 0.8 0.6 2 0.60.5 2 0.30.5 0.5 0.4 0.20.80.80.5Detergents, mg/L 0.25 0.25 0.25 0.25 0.25 0.250.5 0.50.25 0.250.75 0.50.25 0.250.5 0.25 0.25 0.25 0.5 0.53 1 0.250.5 0.25 0.5 0.250.250.250.25Chlorine, mg/L nd nd nd nd nd ndnd ndnd nd0.4 ndnd ndnd nd nd 0.5 0.2 ndnd nd 0.4nd 0.1 nd nd0.1ndndCopper, mg/L nd nd nd nd nd ndnd ndnd ndnd ndnd ndnd nd nd nd nd ndnd nd ndnd nd nd ndndndndPhenols, mg/L nd nd nd nd nd ndnd ndnd ndnd ndnd ndnd nd nd nd nd 0.1nd nd ndnd nd nd ndndndndNotes: na = not analyzed; nd = not detectedAppendix 7.2 City of Carlsbad Dry Weather Historical DataSite IDAH-03AH-04AH-08AH-09AH-10AH-11AH-12AH-13AH-18AH-24AH-27AH-28AH-30AH-31AH-32AH-45AH-46AH-59AH-61AH-63AH-65BA-02BA-03BA-04BA-06BA-07BA-13BA-26BA-27BA-322002Temperature, °C18 25.5 18 21 21 23 20.2 18.5 18 19 17 28 17 18 24 19.5 18 18 21 21 19 20 21 23 21 20 19 21 19 22pH8.4 8.4 7.4 8.1 8.0 8.0 7.9 7.4 7.6 7.5 7.6 8.2 7.7 7.6 8.1 8.2 7.6 7.9 8.2 8.8 8.1 7.9 6.9 7.5 7.7 8.2 8.0 7.9 7.4 7.5Turbidity, NTU44.79 34.22 1.45 55.0 0.9 22.63 14.56 0.39 13.23 0.73 16.14 6.46 2.45 35.78 1.35 0 39.98 10.36 22.56 0.41 76.5 8.07 2.46 4.71 7.44 23.86 6.46 12.4 48.05 3.03Conductivity, mS/cm1.66 4.52 2.54 0.94 2.93 1.08 1.33 2.98 3.31 5.75 0.92 4.11 1.59 1.50 3.22 5.04 8.15 2.28 1.46 4.06 2.24 1.45 5.01 5.36 4.11 1.42 4.24 4.38 1.17 2.87Detergents (field), mg/L0.5 8.0 0.5 0.25 0.5 1.0 6.0 0.75 0.25 0.25 0.25 0.25 0.25 0.37 0.25 0.25 0.25 0.5 0.5 0.25 0.25 0.25 0.25 0.37 0.25 0.25 0.25 0.5 3.0 0.25Ammonia-N, mg/L0.8 1.0 0.1 0.3 <0.05 2.0 3.0 0.1 1.0 0.1 0.5 0.1 0.8 2.5 0.2 0.5 0.6 0.1 0.4 0.2 0.4 0.4 0.2 0.4 1.5 0.2 1.0 0.4 56.0 0.2Nitrate-N,mg/L5.0 0.2 >40 1.0 40.0 0.4 2.0 >40 0.2 8.0 0.1 <0.05 0.9 <0.05 6.0 3.0 10.0 <0.05 18.0 0.6 0.8 6.0 5.0 6.0 2.5 1.5 4.0 0.8 0.5 1.5Orthophosphate-P, mg/L 0.13 1.79 0.07 0.20 0.10 0.49 0.98 0.07 0.65 0.07 0.49 0.03 0.65 0.82 0.00 0.07 0.07 0.00 0.10 0.07 0.49 0.65 0.10 0.20 0.49 0.49 1.14 0.07 1.63 0.20Surfactants (lab), mg/L ndndndndnd ndnd ndndndndndOil & Grease, mg/L 44453031752 ndnd nd3nd011Total Hardness, mg/L425477nd8211,030 3,430 326 1640112016601070300Cadmium, mg/Lndndndndnd ndnd ndndndndndCopper, mg/Lndndndndnd ndnd ndndndndndLead, mg/L ndndndndnd ndnd ndndndndndZinc, mg/LndndndndndndndndndndndndZinc, mg/LndndndndndndndndndndndndDiazinon, µg/L nd ndndndnd ndnd ndndndndndChlorpyrifos, µg/Lndndndndnd ndnd ndndndndndTotal Coliforms, MPN/100 mL 11,0001,300800202,400 3861,700 1,70050,00011,00013,000170Fecal Coliforms, MPN/100 mL 500340110<201,300 2201,700 11050,0001,1003,000155Enterococci, MPN/100 mL 5,00030080170170 1,3001,700 1,70050,00024,0003,0003002003Temperature, °C2020 23.5 21 21.5 23 20 24 25 22 25 23 21 23.5 21 21 20 24 22 22 23.5 22 23 23 21 23 23.5 20 22pH7.67.3 7.2 7.4 7.0 7.5 7.2 7.1 7.3 7.6 7.4 7.1 7.3 7.5 7.5 7.4 7.2 7.3 7.6 7.2 7.2 7.0 7.2 7.4 7.5 7.4 7.9 7.1 7.7Turbidity, NTU2.459.24 19.3 4.25 18.40 18.91 0.32 40.22 1.62 23.57 1.39 4.85 4.85 5.36 2.47 14.30 4.36 7.68 3.19 0.84 2.21 3.76 16.87 3.78 10.07 7.51 4.82 9.14 23.23Conductivity, mS/cm2.082.08 1.10 2.90 1.32 2.40 3.07 4.15 5.43 1.57 4.48 1.93 2.20 3.62 4.27 8.53 10.83 12.29 4.07 1.87 1.97 5.83 4.70 5.25 1.27 6.81 6.46 3.02 3.31Detergents (field), mg/L0.250.25 0.75 0.38 0.8 2.0 0.75 0.25 0.25 0.5 0.25 0.13 1.0 0.25 0.25 0.25 0.75 0.5 0.25 0.13 0.25 0.25 0.5 0.5 0.13 0.75 0.5 0.38 0.25Ammonia-N, mg/L4.00.4 0.3 0.2 2.0 1.0 0.2 1.0 0.2 1.5 0.2 0.3 1.5 0.2 0.3 0.3 0.2 0.4 0.3 0.2 0.3 0.6 0.3 0.4 0.6 0.2 0.3 0.8 0.2Nitrate-N,mg/L6.420.0 0.6 36.0 0.1 32.0 >40 0.1 8.0 0.2 0.1 0.4 0.6 1.0 2.5 8.0 0.1 4.5 2.0 0.8 5.0 4.5 5.0 4.5 0.8 3.5 0.6 0.4 2.5Orthophosphate-P, mg/L 0.980.16 0.20 0.10 0.82 0.82 0.03 0.98 0.03 0.65 0.03 0.33 0.65 nd 0.13 0.07 nd 0.07 0.07 0.49 0.98 0.26 0.20 0.20 0.65 0.49 0.03 0.49 0.10Surfactants (lab), mg/L ndndndndnd ndndndOil & Grease, mg/L 522nd2 ndndndTotal Hardness, mg/L3934515311,5201,070 2,9601,2201,950Cadmium, mg/Lndndnd0.046nd ndndndCopper, mg/L0.006nd0.006ndnd nd0.014ndCopper, mg/L0.006nd0.006ndndnd0.014ndLead, mg/L ndndndndnd ndndndZinc, mg/L0.0230.0450.0270.0310.031 0.032nd0.061Diazinon, µg/Lndndndndnd ndnd0.33Chlorpyrifos, µg/Lndndndndnd nd0.55ndTotal Coliforms, MPN/100 mL 90,00090,0008,0008,000160,000 22,000>160000>160000Fecal Coliforms, MPN/100 mL 50,00050,0005,0005,000160,000 11,000>160000>160000Enterococci, MPN/100 mL 401301305008,000 nd1,30090,0002004Temperature, °C20.720.4 23 23 22.6 23.1 20.7 22 21 20 19 20 20 26 21 20 19.3 24 22 21 22 21 22 22 22 21.4 24 23 24pH8.37.8 7.5 7.9 6.9 8 7.27 7.4 7.62 8.4 6.7 7.7 7.3 7.8 8.2 7.5 7 7.6 8.5 7.7 7.9 7 7.3 7.8 7.9 7.3 7.9 7.1 7.4Turbidity, NTU1.77.05 15.96 2.74 1.74 15.65 0.73 18.08 4.23 14.52 0.84 3.32 20.89 1.67 0.88 5.98 2.42 4.53 1.68 4.21 1.8 8.64 1.79 5.54 7.15 30.92 14.22 13.71 6.46Conductivity, mS/cm1.661.32 0.80 2.00 0.91 1.98 1.98 2.68 4.74 0.79 3.86 1.43 1.22 2.02 1.90 5.75 5.81 3.82 2.40 1.61 1.58 3.86 4.18 3.70 1.22 8.53 3.29 5.51 1.73Detergents (field), mg/L0.680.13 0.25 0.5 0.68 0.5 0.5 0.38 0.25 0.13 0.25 0.13 0.38 0.38 0.13 0.25 0.5 0.25 0.25 0.13 0.25 0.25 0.25 0.25 0.25 0.68 0.25 0.25 0.25Ammonia-N, mg/L0.20.2 0.8 0.1 3.0 0.5 0.1 1.5 0.4 0.3 0.3 0.3 2.0 0.2 0.1 0.8 0.2 0.4 0.2 0.3 0.1 0.6 0.1 0.2 0.3 0.3 0.3 0.6 0.2Nitrate-N,mg/L2.520.0 3.8 30.0 1.25 20 50 1.25 5 1.25 1.25 1.25 1.25 1.25 1.25 7.5 1.25 2.5 2.5 1.25 5 3.75 6.25 8.5 5 2.5 2.5 2.5 4Orthophosphate-P, mg/L 0.260.03 0.49 0.07 0.98 0.16 0.03 1.14 0.03 0.13 0.13 0.3 0.82 0.03 0.07 0.26 nd 0.13 0.07 0.82 0.26 0.2 0.07 0.03 0.7 1.6 0.07 0.19 0.13Surfactants (lab), mg/L 2ndndndnd ndndndOil & Grease, mg/L ndndndndnd nd11Total Hardness, mg/L5005296001750737 234012603090Cadmium, mg/Lndndndndndndnd0.024Cadmium, mg/Lndndndndnd ndnd0.024Copper, mg/Lndnd0.009ndnd ndnd0.085Lead, mg/L ndndndndnd ndndndZinc, mg/Lnd0.0210.0220.029nd 0.028ndndDiazinon, µg/Lndndndndnd ndndndChlorpyrifos, µg/Lndndndndnd ndndndTotal Coliforms, MPN/100 mL 7,00030,00080,00013,00050,000 170,00028,000170,000Fecal Coliforms, MPN/100 mL 2,4003002,300705,000 24,0002,10013,000Enterococci, MPN/100 mL 9,000702008001,300 160,0008,0002,800Note: nd = not detectedAppendix 7.2 City of Carlsbad Dry Weather Historical DataSite IDBA-34BA-36BA-40BA-41BA-43BA-47BA-48BA-49BA-51BA-52BV-02BV-04ABV-06BV-08BV-09BV-10BV-15BV-16EN-02AEN02A-1EN-02BEN-02CEN-09EN-14EN-14AEN-18EN-19EN-20EN-21EN-23EN-24EN-312002Temperature, °C22 18.5 20 20 19 19 19 20 18 19 18 21 18.5 19 20 17.5 ns 19.5 21 21 23 19 19 21 22 20 20 23 19 19.5 20 21pH8.0 8.0 8.0 7.4 7.7 4.5 7.8 7.7 7.8 7.7 7.8 7.5 7.6 7.9 8.3 7.9 ns 8.3 7.9 8.0 9.1 8.2 7.5 8.0 4.5 6.9 7.2 7.2 5.6 7.2 7.0 7.4Turbidity, NTU1.6 1.47 3.66 7.06 11.41 43.64 14.83 1.04 8.47 4.47 2.86 2.68 1.6 2.21 5.75 3.53 ns 46.99 21.27 34.22 1.68 0.93 44.48 16.11 0.51 176.0 6.83 26.79 31.42 44.56 27.36 2.78Conductivity, mS/cm6.53 6.46 4.85 4.86 4.12 7.59 4.67 1.28 5.17 5.66 1.43 1.48 4.85 4.13 5.94 5.70 ns 2.07 1.36 4.43 3.20 5.84 4.23 2.33 1.11 7.44 4.96 4.49 4.96 3.50 3.66 5.73Detergents (field), mg/L0.4 0.5 0.25 0.75 0.5 0.25 0.37 0.25 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25 ns 0.25 0.25 8.0 0.25 0.5 0.5 0.25 0.5 0.25 0.75 0.5 0.37 0.25 0.25 0.25Ammonia-N, mg/L0.2 0.4 0.2 0.5 1.5 0.5 1.0 0.2 0.4 0.6 0.6 0.2 0.2 0.2 0.4 0.4 ns 0.3 0.5 1.0 0.2 0.2 2.0 0.5 1.5 0.8 1.0 0.5 0.8 1.0 0.5 0.1Nitrate-N,mg/L0.1 1.0 1.5 0.8 0.8 3.5 2.5 0.1 2.0 2.0 1.0 12.0 7.0 2.0 1.5 2.0 ns 1.5 0.8 0.2 2.5 >40 0.1 0.3 2.5 0.05 < 0.05 < 0.05 2 1.0 < 0.05 1.0Orthophosphate-P, mg/L 0.08 0.10 0.20 0.20 0.49 6.52 0.33 0.16 0.05 0.82 0.49 0.05 0.20 0.26 0.13 0.10 ns 0.49 0.65 1.79 0.13 0.49 0.65 0.49 0.03 0.03 0.00 0.03 0.05 0.07 0.07 0.05Surfactants (lab), mg/L ndnd ndOil & Grease, mg/L nd84 7Total Hardness, mg/L329577 1070Cadmium, mg/Lndnd ndCopper, mg/Lndnd ndLead, mg/L ndnd ndZinc, mg/LndndndZinc, mg/LndndndDiazinon, µg/L ndnd ndChlorpyrifos, µg/Lndnd ndTotal Coliforms, MPN/100 mL >160,0001,400 230Fecal Coliforms, MPN/100 mL 800700 <20Enterococci, MPN/100 mL 500500 2302003Temperature, °C24 21 21 24 23 23 23 23 19.5 20 19 25 23.5 24 22 22 ns 23 23 31 26 21 21 20.5 21 24 24 24 22 22 22 23pH8.0 7.6 7.5 7.8 7.5 7.1 7.1 7.3 7.4 7.2 7.3 7.0 8.0 7.4 7.6 7.4 ns 7.6 7.3 7.1 7.8 7.2 7.2 7.2 6.2 6.9 7.3 7.0 6.7 6.0 7.2 6.9Turbidity, NTU0.29 1.23 6.94 5.27 4.32 10.55 5.04 4.81 7.99 7.58 3.80 1.22 3.05 14.88 4.58 3.86 ns 17.50 10.65 14.05 2.60 0.38 3.81 12.03 40.80 12.96 13.14 6.45 36.02 3.53 5.12 1.72Conductivity, mS/cm5.57 8.62 2.83 3.90 3.38 2.04 2.61 2.22 5.74 4.88 2.17 15.79 2.98 2.97 5.34 5.41 ns 2.57 1.86 1.60 3.68 5.86 5.24 9.53 6.35 2.57 3.84 2.01 6.21 9.42 3.51 6.52Detergents (field), mg/L0.25 0.5 0.25 0.25 0.25 0.38 0.25 nd 0.25 0.25 0.25 0.75 0.25 0.25 0.5 0.25 ns 2.0 0.25 1.0 0.25 0.75 0.38 0.5 0.25 0.25 0.25 0.13 0.5 0.5 0.25 0.25Ammonia-N, mg/L0.4 0.2 0.2 0.4 1.0 0.6 0.8 0.1 0.2 0.4 0.4 0.3 1.0 0.3 0.4 0.4 ns 0.4 0.8 1.0 0.2 0.2 0.3 0.4 0.6 0.4 0.2 0.2 0.6 3.5 0.4 0.4Nitrate-N,mg/L1.0 0.6 2.0 0.8 0.8 0.8 1.0 4.0 0.6 0.3 2.5 28.0 4.8 1.5 2.5 3.0 ns 0.6 0.3 0.1 0.8 40.0 0.3 1.5 2.0 0.4 0.8 0.8 1.5 1.5 0.3 0.8Orthophosphate-P, mg/L 0.03 0.07 0.13 0.10 0.49 0.49 0.65 0.07 0.03 0.07 0.49 0.03 0.26 0.20 0.33 0.49 ns 0.49 0.20 0.49 nd 0.10 nd 0.07 0.07 0.03 nd 0.03 0.07 0.07 0.07 0.07Surfactants (lab), mg/L nd ndndndndndndOil & Grease, mg/L nd ndndndndndndTotal Hardness, mg/L2,400 6711,9603658001,680979Cadmium, mg/Lnd ndndndndndndCopper, mg/L0.007 ndnd0.006ndndndCopper, mg/L0.007ndnd0.006ndndndLead, mg/L nd ndndndndndndZinc, mg/L0.021 ndnd0.054nd0.0220.022Diazinon, µg/Lnd 0.060.12ndndndndChlorpyrifos, µg/Lnd ndndndndndndTotal Coliforms, MPN/100 mL>160000 >1600008,000160,0008,0005,0005,000Fecal Coliforms, MPN/100 mL160,000 160,0003,00090,0005,0003,0003,000Enterococci, MPN/100 mL300 23023080800230802004Temperature, °C21.6 20.4 21 23.7 21.1 23 21.3 19 21 23 20.7 25 21.5 21 21.9 22.1 ns 22.7 20 25 23 20 21 22.5 2.5 22.5 23.2 21 22 22 23.4 22pH8 7.9 7.7 7.5 7.2 6.0 7.2 7.5 7.7 7.4 7.9 7 7.9 7.8 8.2 7.9 ns 8.3 7.7 7.2 9.0 8.2 7.5 7.8 4.8 7.3 7.7 7.2 7.2 4.2 7.7 6.9Turbidity, NTU0.07 2.55 3.56 4.36 5.25 15.88 5.99 0.83 2.78 6.33 1.68 4.19 1.71 1.44 0.66 4.11 ns 5.14 18.64 8.84 2.67 0.08 5.92 7.2 48.16 14.71 8.75 26.34 6.76 6.95 1.4 11.38Conductivity, mS/cm4.98 5.81 2.70 2.51 2.61 4.24 2.16 1.78 3.95 3.44 1.26 4.08 3.97 2.29 4.04 4.06 ns 2.53 0.92 2.08 2.50 4.05 3.15 3.14 6.42 1.65 2.56 4.45 1.12 6.19 2.64 4.62Detergents (field), mg/L0.38 0.25 0.5 1.75 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.75 0.25 0.13 0.25 0.13 ns 0.25 0.25 0.5 0.25 0.75 0.25 0.25 0.5 0.13 0.25 0.38 0.5 0.5 0.13 0.25Ammonia-N, mg/L0.3 0.4 0.2 0.3 0.8 0.8 0.8 0.1 0.2 0.3 0.8 0.4 0.4 0.4 0.5 0.4 ns 0.4 0.8 0.2 0.2 0.1 0.2 0.4 0.8 0.4 0.4 0.6 0.3 1.0 0.3 0.3Nitrate-N,mg/L1.25 2.5 2.5 1.25 2.5 1.25 1.25 3.75 1.25 3.75 5 7.5 7.5 5 6.8 5 ns 2.5 2.5 3.75 4 75.0 3 1.25 3.8 2.5 1.25 1.25 3.75 2.5 1.25 3.75Orthophosphate-P, mg/L 0.13 0.16 0.19 0.07 0.33 0.19 0.7 0.07 0.03 0.49 0.49 0.98 0.23 0.33 0.65 0.49 ns 0.49 0.09 0.03 0.03 0.49 0.03 0.19 0.07 0.03 0.03 0.03 0.07 0.03 0.03 0.03Surfactants (lab), mg/L nd ndndndndndndOil & Grease, mg/L nd 1ndndndndndTotal Hardness, mg/L1970 1190205037582213601040Cadmium, mg/LndndndndndndndCadmium, mg/Lnd ndndndndndndCopper, mg/L0.069 ndnd0.005ndndndLead, mg/L nd ndndndndndndZinc, mg/Lnd nd0.0280.076ndndndDiazinon, µg/Lnd ndndndndndndChlorpyrifos, µg/Lnd ndndndndndndTotal Coliforms, MPN/100 mL22,000 140,0003,40024,00013,00030,00017,000Fecal Coliforms, MPN/100 mL1,700 24,0003002703001,100800Enterococci, MPN/100 mL5,000 22,0007002,100140270130Notes: nd = not detected; ns = not sampledAppendix 7.2 City of Carlsbad Dry Weather Historical DataSite IDAH-03AH-04AH-08AH-09AH-10AH-11AH-12AH-13AH-18AH-24AH-27AH-28AH-30AH-31AH-32AH-45AH-46AH-59AH-61AH-63AH-65BA-02BA-03BA-04BA-06BA-07BA-13BA-26BA-27BA-322005Temperature, °C23.5 29.6 20.5 25.1 21.3 23.8 24.4 21.9 25.4 22.9 26.9 20.7 23.0 23.9 27.8 21.6 20.7 20.6 26.2 25.2 24.3 23.6 23.8 25.0 23.9 22.1 22.6 24.5 23.6 24.8pH8.5 9.4 7.5 8.0 7.7 8.2 8.2 8.8 7.5 7.6 9.0 7.4 8.0 8.5 8.4 8.2 8.1 7.9 7.6 8.7 8.3 8.1 7.0 7.3 7.7 8.2 8.1 8.0 7.5 7.5Turbidity, NTU1.85 1.18 2.98 21.63 7.97 3.22 7.63 12.77 8.36 2.35 6.23 1.72 1.04 11.82 5.82 3.28 2.43 4.61 4.32 0.18 2.09 3.29 12.84 12.83 2.56 6.99 12.54 16.33 2.28 1.49Conductivity, mS/cm2.12 2.86 1.58 1.13 2.39 1.01 2.32 2.47 2.39 5.36 1.52 3.78 1.77 2.06 2.74 4.26 2.76 9.02 6.77 2.62 1.48 1.87 4.66 4.05 3.11 1.99 4.43 7.04 7.22 1.94Detergents (field), mg/L0.25 0.5 0.5 0.25 1 0.75 1 1 0.37 0.5 0.25 0.5 0.25 0.25 0.25 0.5 0.25 1 0.5 0.5 0.13 0.25 0.75 0.75 0.50 0.50 0.50 0.75 0.75 0.50Ammonia-N, mg/L0.2 0.2 0.2 0.4 0.2 0.4 0.3 0.3 1.5 0.3 0.6 0.3 0.3 0.3 0.2 0.2 0.3 0.3 0.2 0.2 0.2 0.1 0.4 0.3 0.6 0.3 0.3 0.3 0.3 0.2Nitrate-N,mg/L6.75 8.75 15 1.25 50 1.25 30 75 1.25 2.5 1.25 1.25 2.5 1.25 1.25 3.75 1.25 1.25 5 1.25 1.25 6.25 3.75 5.00 2.5 6.25 2.5 1.25 2.5 5Orthophosphate-P, mg/L 0.11 nd 0.1 0.49 0.05 0.26 0.33 0.20 0.50 0.03 0.49 0.33 0.2 0.49 0.02 0.07 0.03 0.03 0.03 0.1 0.16 0.33 0.3 0.19 0.33 0.49 0.26 0.10 1.63 0.26Surfactants (lab), mg/L ndndndndnd ndndndOil & Grease, mg/L ndnd16ndnd ndndndTotal Hardness, mg/L60646656419401520 10408471350Cadmium, mg/Lndndndndnd ndndndCopper, mg/Lndnd0.005ndnd nd0.005ndLead, mg/L ndndndndnd ndndndZinc, mg/Lnd0.027ndnd0.036nd0.0240.029Zinc, mg/Lnd0.027ndnd0.036nd0.0240.029Diazinon, µg/L nd ndndndnd ndndndChlorpyrifos, µg/Lndndndndnd ndndndTotal Coliforms, MPN/100 mL 30,00023,000500,000130,000300,000 50,000130,000300,000Fecal Coliforms, MPN/100 mL 90017,00011,0007003,000 27011,00030,000Enterococci, MPN/100 mL 8005002702301,300 1,100160,00035,0002006Temperature, °C24.5 33.0 21.0 26.3 29.3 23.6 24.7 22.5 27.7 27.9 27.7 30.5 26.6 25.0 28.9 28.7 23.9 26.5 25.8 24.0 25.0 24.1 25.8 26.6 26.5 24.6 23.3 25.7 23.7 25.9pH8.1 9.8 7.9 7.7 7.8 7.7 8.3 7.6 7.5 7.3 8.4 7.6 7.6 7.3 8.1 7.6 7.4 7.7 7.4 8.8 7.9 7.9 8.6 7.2 7.6 7.9 7.8 7.8 7.5 7.7Turbidity, NTU5.43 16.63 2.79 25.93 12.77 3.46 2.94 0.93 13.55 2.91 12.32 7.19 2.91 13.7 0 23.2 6.56 10.4 27.48 2.17 3.21 2.37 4.25 11.12 164.00 16.15 35.45 8.52 7.48 1.42Conductivity, mS/cm1.92 1.63 1.47 1.00 2.33 0.87 2.03 2.29 3.54 5.27 0.80 4.26 1.76 1.32 2.94 2.78 6.54 1.58 2.92 2.20 1.90 1.63 2.44 2.98 2.56 1.95 10.92 6.40 6.19 1.62Detergents, mg/L0.25 0.75 0.5 0.5 0.5 0.5 0.75 0.5 0.25 0.5 0.25 0.5 0.25 0.75 0.25 0.5 0.5 0.25 0.25 0.5 0.25 0.25 0.25 0.25 0.25 0.75 0.75 0.63 0.50 0.25Ammonia, mg/L0.1 0.4 0.2 0.4 0.2 0.6 0.3 0.1 1.5 0.4 0.2 0.3 0.4 2.5 0.1 0.4 1.5 0.2 0.4 0.1 0.2 0.1 0.2 0.2 0.3 4 0.4 0.1 0.1 0.9Ammonia-N, mg/L7.5 1.25 6.75 1.25 30 2.5 25 50 1.25 2.5 1.25 1.25 3.75 2.5 1.25 3.75 5 1.25 2.5 2.5 2.5 3.75 3.75 3.75 2.5 2.5 6.75 1.25 2.5 2.5Nitrate-N,mg/L0.27 0.2 0.13 0.49 0.07 0.33 0.26 0.07 0.82 0.03 0.07 0.07 0.33 1.100.1 0.13 0.07 0.13 0.49 0.65 0.33 0.3 0.20 0.13 1.30 0.20 0.2 0.07 2.28Orthophosphate-P, mg/Lndndndndnd ndndndOil & Grease, mg/L ndndndndnd ndndndTotal Hardness, mg/L5492714681590830 17904483400Cadmium, mg/Lndndndndnd ndnd0.021Copper, mg/L0.0090.0060.014nd0.005 0.0070.009ndCopper, mg/L0.0090.0060.014nd0.0050.0070.009ndLead, mg/L ndndndndnd ndndndZinc, mg/L0.0370.0310.029ndnd 0.046nd0.094Diazinon, µg/Lndndndndnd ndndndChlorpyrifos, µg/Lndndndndnd ndndndTotal Coliforms, MPN/100 mL 170,00050,000300, 000500,000300,000 900,00080,000240,000Fecal Coliforms, MPN/100 mL 3,0001,70023, 0003,0005,000 130,0008,00090,000Enterococci, MPN/100 mL 5,0002308005,0003,000 >160,00023013,0002007Temperature, °C22.1 33.8 19.6 23.9 22.1 22.6 2321.6 24.1 23.3 19.6 21.3 22 21.3 26.4 20.5 21.6 22.6 25.5 21.5 23 22.5 25.2 24.6 23.1 22.7 24.8 24.6 23.4 24.8pH7.6 8.4 7.9 7.8 7 7.4 87.4 7.6 7.3 8.4 7.6 7.7 7.7 8.3 8.2 7.7 7.7 7.7 8.8 7.7 7.6 7.4 7.3 7.3 8 7.6 7.8 7.4 7.3Turbidity, NTU3.89 17.01 1.39 21.03 28.7 2.72 9.270.75 7.23 1.32 4.63 2.99 1.23 3.49 2.89 0.1 4.57 3.14 3.59 0.71 2.9 1.33 3.44 2.21 2.51 3.75 30.97 3.8 9.05 3.3Conductivity, mS/cm1.63 8.63 1.64 0.85 2.08 0.97 1.112.2 2.73 5.93 1.59 4.34 1.45 1.23 2.14 3.99 8.02 2.45 5.12 1.87 1.48 1.38 2.92 3.01 2.01 1.82 9.74 5.97 4.55 2.45Detergents, mg/L0.25 3 0.38 0.38 0.75 0.75 0.750.75 0.5 0.5 0.5 0.63 0.25 0.25 0.25 0.5 0.75 0.38 0.38 0.25 0.5 0.5 0.5 0.5 0.25 0.25 0.75 0.63 0.5 0.63Ammonia-N, mg/Lnd 0.2 0.1 0.1 0.1 0.1 0.10.2 0.2 0.5 0.1 0.2 nd 0.2 0.2 0.1 0.4 0.2 0.8 nd 0.6 0.5 0.2 0.2 nd 0.1 0.4 0.5 0.3 0.3Nitrate-N,mg/L6.62 0.23 9.18 0.52 32.1 0.23 3.5448.6 0.23 2.53 0.2 0.14 0.32 0.14 0.17 2.08 4.86 0.41 1.54 0.45 0.34 2.19 1.79 2.55 1.92 1.54 7.73 0.93 0.7 1.04Orthophosphate-P, mg/L0.16 0.49 0.1 0.29 0.2 0.59 0.620.1 0.98 0.03 1.56 0.03 0.23 0.52 0.07 0.2 0.07 0.1 0.1 0.42 2.02 0.91 0.26 0.65 0.62 0.62 0.33 0.07 0.78 0.59Surfactants, mg/L ndnd0.5ndnd ndndndOil & Grease, mg/L ndndndndnd ndndndTotal Hardness, mg/L58838550220501550 34805473820Cadmium, mg/Lndndndnd0.01Cadmium, mg/Lnd ndndndnd ndnd0.01Copper, mg/L0.005nd0.009nd0.006 0.0050.0070.006Lead, mg/L ndndndndnd ndndndZinc, mg/L0.033nd0.024nd0.022 ndnd0.068Diazinon, µg/Lndndndndnd ndndndChlorpyrifos, µg/Lndndndndnd ndndndTotal Coliforms, MPN/100 mL16,00023,20040,0006,60029,600 16,80055,400151,000Fecal Coliforms, MPN/100 mL10,6002,7257,1001,4003,875 8,6006,30015,000Enterococci, MPN/100 mL5,1801,2601,0103501,390 2,87082,80022,050Note: nd = not detectedAppendix 7.2 City of Carlsbad Dry Weather Historical DataSite IDBA-34BA-36BA-40BA-41BA-43BA-47BA-48BA-49BA-51BA-52BV-02BV-04ABV-06BV-08BV-09BV-10BV-15BV-16EN-02AEN02A-1EN-02BEN-02CEN-09EN-14EN-14AEN-18EN-19EN-20EN-21EN-23EN-24EN-312005Temperature, °C21.3 23.4 23.7 23.8 22.7 22.6 22.4 22.6 22.1 22.4 21.5 23.4 23.8 23.6 23.0 21.4 ns 24.2 23.722.0 21.7 21.7 23.3 24.8 26.1 25.1 23.5 23.3 23.8 24.5 22.6pH8.2 8.1 8.1 7.8 7.5 5.3 7.6 7.7 7.9 7.3 7.9 7.5 7.8 7.8 8.3 7.9 ns 8.3 8.58.1 8.3 7.5 8.1 4.9 7.2 7.7 7.3 6.9 4.6 7.9 6.5Turbidity, NTU0.19 1.78 2.11 48.69 1.75 22.57 7.95 1.40 0.11 10.22 1.81 10.77 2.89 6.58 3.38 2.81 ns 2.7 7.560.23 0.65 7.13 0.99 30.4 22.48 28.87 13.78 22.69 3.29 2.24 9.9Conductivity, mS/cm6.21 8.45 2.81 4.75 3.64 9.16 4.04 2.13 6.15 3.23 1.77 5.82 4.76 2.87 5.20 5.29 ns 3.36 1.853.23 4.83 2.75 2.45 6.61 2.43 3.68 3.06 1.82 3.61 3.62 7.92Detergents (field), mg/L0.75 0.75 0.25 0.50 0.50 0.75 0.50 0.25 0.75 0.25 0.37 0.5 0.63 0.5 0.63 0.75 ns 0.5 0.250.25 0.75 0.25 0.25 0.25 0.25 0.25 0.5 0.5 0.75 1.5 0.5Ammonia-N, mg/L0.2 0.3 0.2 0.4 0.6 0.1 0.6 0.2 0.2 0.7 0.5 0.6 0.2 0.4 0.3 0.3 ns 0.4 0.80.4 0.2 0.3 0.3 0.3 0.4 0.6 0.4 4 0.8 0.2 0.3Nitrate-N,mg/L1.25 1.25 2.5 2.5 2.5 2.5 2.5 1.25 1.25 1.25 5 2.5 5 5 2.5 3.75 ns 3.75 1.252.5 100 1.25 1.25 2.5 1.25 1.25 1.25 2.5 2.5 1.25 2.5Orthophosphate-P, mg/L 0.10 0.10 0.13 0.13 0.20 0.03 0.33 0.13 0.03 0.65 0.13 0.26 0.49 0.2 0.16 0.19 ns 0.49 0.50nd 0.65 nd 0.10 0.03 0.03 nd 0.03 0.65 nd 0.03 0.03Surfactants (lab), mg/L nd ndndndndndndOil & Grease, mg/L nd ndndndndndndTotal Hardness, mg/L3180 80925145795518401290Cadmium, mg/Lnd ndndndndndndCopper, mg/L0.008 0.016ndndndndndLead, mg/L nd ndndndndndndZinc, mg/Lndndnd0.247ndndndZinc, mg/Lndndnd0.247ndndndDiazinon, µg/L nd ndnd ndnd ndndChlorpyrifos, µg/Lnd ndndndndndndTotal Coliforms, MPN/100 mL50,000 90,00030,0001,600,0008,000130,00050,000Fecal Coliforms, MPN/100 mL3,000 24,0009005,000300902,200Enterococci, MPN/100 mL3,000 2,8003,0002,3005003003002006Temperature, °C23.0 22.3 25.3 25.5 24.5 26.0 25.4 23.1 21.0 23.9 23.3 27.4 24.5 25.5 24.2 23.9 ns 25.0 23.426.7 21.3 22.3 24.5 25.1 25.0 25.1 24.6 23.8 23.4 24.5 24.2pH8.2 8.1 7.5 8.6 8.3 5.6 8.3 7.6 7.8 7.3 7.5 6.8 7.5 7.6 7.9 7.5 ns 8.1 7.88.9 8.1 7.4 7.9 6.6 6.7 7.5 7.0 7.3 6.9 6.7 6.2Turbidity, NTU3.50 3.55 1.04 2.43 4.09 24.82 7.34 1.24 2.35 3.96 5.29 1.1 1.45 11.16 3.11 2.75 ns 3.0 41.253.38 1.52 10.82 76.00 26.97 34.83 6.05 14.85 6.21 9.3 27.33 7.66Conductivity, mS/cm5.67 6.89 2.85 3.98 2.69 9.98 3.97 2.24 5.63 4.41 1.64 15.12 2.62 4.75 3.98 4.01 ns 2.18 1.062.69 5.09 4.83 2.49 4.11 6.23 5.12 6.04 1.19 3.34 3.65 6.43Detergents, mg/L0.25 0.50 0.25 0.75 0.50 0.75 0.75 0.25 0.50 0.50 0.5 0.8 0.25 1.5 0.5 0.5 ns 0.5 0.250.5 1 0.5 0.25 0.5 0.75 0.75 0.75 0.75 0.5 0.5 0.5Ammonia, mg/L0.2 0.2 0.3 0.2 0.8 0.4 0.9 0.1 0.1 0.6 0.8 0.6 0.1 0.6 0.2 0.2 ns 0.2 0.60.4 0.2 0.3 >10 10 0.8 0.4 0.8 0.8 0.6 0.6 0.2Ammonia-N, mg/L2.5 1.25 1.25 1.25 1.25 2.5 1.75 3.75 1.25 2.5 6.25 10 3.75 5 3.75 5 ns 2.5 1.252.5 50 2.5 3.75 2.5 2.5 2.5 1.25 15 2.5 1.25 1.25Nitrate-N,mg/L0.26 0.07 0.23 0.98 0.49 0.49 0.13 0.07 0.03 0.63 0.8 0.03 0.2 0.3 0.27 0.3 ns 0.7 0.260.07 3.00 0.03 1.10 0.13 0.00 0.07 0.07 0.07 0.26 0.07 0.03Orthophosphate-P, mg/Lnd ndndndndndndOil & Grease, mg/L nd ndndndndndndTotal Hardness, mg/L2110 892201039570716601770Cadmium, mg/Lnd ndndndndndndCopper, mg/L0.008 ndnd0.005ndndndCopper, mg/L0.008ndnd0.005ndndndLead, mg/L nd ndndndndnd0.032Zinc, mg/Lnd ndnd0.096nd0.035ndDiazinon, µg/Lnd ndndndndndndChlorpyrifos, µg/Lnd ndndndndndndTotal Coliforms, MPN/100 mL80,000 240,00050,000900,00023,00017,000130,000Fecal Coliforms, MPN/100 mL3,000 130,0005005,0003,0001408,000Enterococci, MPN/100 mL1,300 30,0002,3002,3005002302,3002007Temperature, °C22.5 21.6 24.124 22.8 23.8 22.2 22.7 22.4 24.3 22.6 22.8 23.5 23 24.7 21.5 ns 24.6 22.822.7 21.1 21.2 21.3 21.3 23.3 22.3 22.1 22.8 23.2 24.1 22.5pH8 8 7.97.5 7.5 6.2 7.4 7.2 7.6 7.3 7.7 7.7 7.7 7.8 7.9 7.7 ns 7.9 8.58.7 8.3 7.4 7.8 5.9 6.7 7.4 7.1 6.9 4.9 8.1 7.2Turbidity, NTU0.51 68 0.294.28 2.51 11.2 6.46 0.61 1.1 7.63 10.05 11.33 0.1 3.6 0.09 0.32 ns 7.52 9.664.87 0.54 3.98 1.22 3.38 5.32 0.43 6.4 28.2 47.87 2.04 2.51Conductivity, mS/cm5.74 7.07 3.254.98 2.67 4.51 3.6 2.17 5.36 4.1 1.19 3.19 3.9 4.76 4.88 5.23 ns 1.76 2.272.79 4.81 5.92 2.5 3.42 6.22 4.95 6.56 1.65 4.52 3.41 5.36Detergents, mg/L0.5 0.25 0.380.5 0.5 0.5 0.5 0.25 0.5 0.63 0.63 0.38 0.5 0.5 0.5 0.5 ns 0.68 0.50.5 0.75 0.62 0.38 0.5 0.63 0.5 0.63 0.25 0.63 0.5 0.5Ammonia-N, mg/L0.1 0.8 0.10.2 0.3 0.3 0.3 0.1 0.1 0.3 0.2 0.3 0.1 0.2 0.1 0.1 ns 0.5 0.30.2 0.1 0.2 0.2 0.2 0.3 0.2 0.3 0.5 0.3 0.2 0.2Nitrate-N,mg/L0.61 0.43 0.880.93 1.06 0.75 1.36 2.21 0.45 1.54 1.47 0.29 5.2 3.07 2.03 2.08 ns 0.97 1.652.19 40.6 0.09 3.59 1.56 0.18 0.2 0.17 1.58 1.7 0.16 0.7Orthophosphate-P, mg/L 0.03 0.46 0.230.26 0.33 0.26 0.23 0.13 0.03 0.55 0.29 0.1 0.2 0.26 0.32 0.29 ns 0.36 0.620.09 0.72 0.03 0.13 0.05 nd nd nd 1.21 0.03 0.07 0.01Surfactants, mg/L nd ndndndndndndOil & Grease, mg/L nd ndndndndndndTotal Hardness, mg/L2299 990235037276824001830Cadmium, mg/LndndCadmium, mg/Lnd ndndndndndndCopper, mg/L0.007 ndndndndndndLead, mg/L nd ndndndndndndZinc, mg/Lnd ndnd0.053ndndndDiazinon, µg/Lnd ndndndndndndChlorpyrifos, µg/Lnd ndndndndndndTotal Coliforms, MPN/100 mL>1,150 23,8003,20066,000<503,3501,800Fecal Coliforms, MPN/100 mL1,150 22,7001,45018,1002251,750500Enterococci, MPN/100 mL320 9,80083012,5504,480140780Notes: nd = not detected; ns = not sampledAppendix 7.2 City of Carlsbad Dry Weather Historical DataSite ID1C-211D-201D-211D-315A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-4617B-4717B-5217C-8317D-717D-3718D-33A19C-121C-1421D-3422B-1122B-1725D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-3831B-342008Temperature, °C 24.623.3 25.5 24.722.0 23.0 dry 24.1 24.9 24.2 26.0 23.3 23.2 25.223.227.5 29.2 23.323.625.2 23.9 25.6 23.0 26.2 21.2 23.6 25.1 25.026.8pH7.77.6 6.8 8.27.8 8.2 dry 8.1 7.8 7.4 8.0 8.2 7.6 8.48.87.7 7.9 7.78.17.5 7.8 7.7 7.3 8.3 8.0 7.3 8.5 8.27.1Turbidity, NTU2.182.58 0.57 1.020.11 0.01 dry 0.02 1.38 9.72 0.63 2.17 1.82 4.521.513.81 1.81 2.261.205.00 11.79 12.43 2.49 6.34 26.87 0.12 0.62 14.450.01Conductivity, mS/cm4.314.85 18.47 2.706.01 5.92 dry 2.32 1.61 1.30 1.43 2.04 3.98 1.412.555.07 2.79 8.561.972.03 4.67 1.27 1.22 2.82 6.67 2.63 3.02 2.854.68Detergents, mg/L0.500.50 0.88 0.500.68 0.50 dry 0.25 0.25 0.50 0.13 0.25 0.38 0.500.500.50 0.25 0.500.250.50 0.68 0.50 0.50 0.68 0.88 0.68 0.75 0.250.25Ammonia-N, mg/L0.1820.158 0.250 0.2220.201 0.141 dry 0.120 0.052 0.810 0.116 0.089 0.217 0.0990.0300.448 0.243 0.6360.0890.343 0.308 0.102 0.227 0.221 0.357 0.257 0.154 0.4850.182Nitrate-N, mg/L4.694.20 27.30 1.922.28 2.13 dry 16.22 1.05 0.81 1.01 5.16 0.94 0.491.026.15 1.16 8.0716.043.09 1.09 2.70 0.84 45.18 0.67 57.09 40.41 2.241.19Orthophosphate-P, mg/L0.1990.302 0.016 0.3830.193 0.168 dry 0.084 0.231 0.656 0.304 0.400 0.064 0.5600.1600.006 0.008 0.1020.2770.933 0.174 0.375 0.328 0.091 0.664 0.095 0.217 0.0880.022Oil & Grease, mg/L ndndndndndndndTotal Hardness, mg/L5674782,0203,3704605211,110Dissolved Cadmium, mg/LndndndndndndndDissolved Copper, mg/L0.0050.0200.0050.0180.0070.0140.007Dissolved Lead, mg/L ndndndndndndndDissolved Zinc, mg/L0.0330.0500.0210.0200.0370.0340.015Dissolved Zinc, mg/L0.0330.0500.0210.0200.0370.0340.015Diazinon, µg/LndndndndndndndChlorpyrifos, µg/LndndndndndndndTotal Coliforms, MPN/100 mL3,25010,60011,00078,0002,7003,3006,700Fecal Coliforms, MPN/100 mL1,0504,3003,50039,0001,3002,0002,800Enterococci, MPN/100 mL1,0003,10020031,0005001,2001,4002009Temperature, °C22.624.5 22.5 24.0 21.5 22.4 ns 20.5 21.0 ns ns 23.0 21.3 ns 24.2 23.4 24.8 22.3 29.6 20.2 19.224.5 23.4 ns ns 23.3 28.5 23.6 25.7 24.0 23.3 25.3pH7.76.9 8.3 7.6 7.6 8.3 ns 8.2 7.6 ns ns 8.0 7.1 ns 7.6 8.4 7.4 7.5 7.9 7.6 7.68.4 7.7 ns ns 7.8 7.8 7.8 8.3 8.0 7.9 7.7Turbidity, NTU5.960.50 3.59 3.71 1.19 0.32 ns 2.16 2.59 ns ns 3.63 1.17 ns 3.76 0.38 7.25 2.59 nd 2.47 5.561.21 nd ns ns 2.05 39.04 6.25 0.25 17.95 5.29 4.92Conductivity, mS/cm4.2415.91 5.85 1.69 5.92 6.07 ns 1.93 1.82 ns ns 1.44 4.40 ns 4.53 3.04 1.95 7.41 3.71 7.30 1.773.09 5.48 ns ns 2.55 6.79 2.42 2.43 3.98 6.60 8.67Detergents, mg/L0.501.25 0.50 0.25 0.50 0.50 ns 0.25 0.13 ns ns 0.50 0.38 ns 0.38 0.25 1.25 0.25 0.13 0.75 0.130.25 0.75 ns ns 0.50 1.50 0.50 0.50 0.25 0.50 0.50Ammonia-N, mg/L0.1840.627 0.162 1.377 0.120 0.162 ns 0.145 0.055 ns ns 0.093 0.189 ns 0.189 0.203 0.157 0.419 0.145 0.278 0.0910.214 0.305 ns ns 0.189 0.514 0.170 0.146 0.290 0.197 0.791Nitrate-N, mg/L2.8717.21 3.23 0.67 1.89 1.68 ns 5.63 0.23 ns ns 2.00 0.08 ns nd 2.51 0.21 1.70 0.13 6.13 6.150.65 0.09 ns ns 39.90 0.21 39.40 21.02 3.16 6.15 7.89Orthophosphate-P, mg/L0.6400.086 1.085 3.983 0.362 0.326 ns 0.859 0.500 ns ns 0.197 0.213 ns 0.777 0.666 3.445 0.033 nd 0.243 0.3620.942 0.349 ns ns nd 2.020 0.179 0.369 0.422 0.466 0.187Oil & Grease, mg/L ndnd nd33nd nd ndnd nd Total Hardness, mg/L1,1104773821,9902,850 4005431,360 1,980Dissolved Cadmium, mg/Lndnd ndndnd ndndnd ndDissolved Copper, mg/L0.0030.0030.0020.0010.0040.0030.0070.0030.020Dissolved Copper, mg/L0.0030.0030.0020.0010.0040.0030.0070.0030.020Dissolved Lead, mg/L ndnd ndndnd ndndnd nd Dissolved Zinc, mg/Lndnd ndndnd ndndnd 0.086Diazinon, µg/Lndnd ndndnd ndndnd nd Chlorpyrifos, µg/Lndnd ndndnd ndndnd nd Total Coliforms, MPN/100 mL23,0005,0005,00022,0005,000 170,0005,00080,000 50,000Fecal Coliforms, MPN/100 mL2201,70050020300 1404030,000 30,000Enterococci, MPN/100 mL90330220405,000 23020160,000 2,3002010Temperature, °C22.3 20.1 21.125.6 22.6 21.3 20.6 22.0 ns 18.2 22.3 32.9 23.3 19.7 21.2 ns ns 24.7 21.1 22.3 26.6 19.1 17.522.621.4 ns ns 25.1 ns 20.4 21.1 20.7 22.6 25.9pH7.6 7.9 7.96.9 8.1 8.0 7.6 8.6 ns 8.4 7.7 8.3 7.8 8.3 7.5 ns ns 8.4 7.7 7.6 8.0 7.8 7.27.37.6 ns ns 8.6 ns 7.7 8.8 8.1 8.1 7.8Turbidity, NTU26.7 3.8 0.30.3 2.5 6.2 1.8 1.4 ns 0.2 2.9 6.9 5.7 0.9 0.9 ns ns 0.4 15.0 8.4 3.8 0.5 2.321.521.5 ns ns 1.3 ns 1.2 1.2 3.4 4.3 5.1Conductivity, mS/cm9.51 4.72 4.6415.43 2.78 2.35 4.76 4.70 ns 2.47 1.79 1.09 1.60 2.72 3.92 ns ns 3.08 4.35 5.48 3.97 5.15 1.713.405.55 ns ns 2.47 ns 2.48 2.40 4.33 4.67 8.80Detergents, mg/L0.75 0.25 0.500.75 0.38 0.25 0.68 0.50 ns 0.25 0.25 2.50 0.25 0.25 0.38 ns ns 0.50 0.50 0.25 0.25 0.50 0.130.680.68 ns ns 0.50 ns 0.50 0.75 0.25 0.50 0.75Ammonia-N, mg/L0.960 0.418 0.3600.430 0.260 0.219 0.543 0.376 ns 0.145 0.175 0.504 0.133 0.156 0.230 ns ns 0.168 1.040 0.470 0.359 1.630 0.1141.4190.702 ns ns 0.377 ns 0.199 0.170 0.889 0.395 0.360Nitrate-N,mg/Lnd 3.070 6.14014.360 1.402 nd 1.245 1.398 ns 11.030 nd nd nd 7.770 nd ns ns 3.490 nd 2.940 nd 6.300 3.980ndnd ns ns 42.920 ns 35.100 19.300 5.850 5.590 10.240Orthophosphate-P, mg/L0.170 0.324 0.157nd 0.414 0.188 0.455 nd ns 0.151 0.349 0.569 0.710 nd nd ns ns 0.162 0.808 nd nd nd nd0.7350.136 ns ns nd ns nd 0.162 0.153 0.217 ndOil & Grease, mg/L ndndndndnd ndndnd ndTotal Hardness, mg/L1,4104346969502,81040241113901370Total Hardness, mg/L1,4104346969502,81040241113901370Dissolved Cadmium, mg/Lndndndndnd nd0.002nd ndDissolved Copper, mg/Lndndndndnd ndndnd ndDissolved Lead, mg/L ndndndndnd ndndnd ndDissolved Zinc, mg/Lndnd0.020ndnd ndnd0.032 0.046Diazinon, µg/Lndndndndnd ndndnd ndChlorpyrifos, µg/Lndndndndnd ndndnd ndTotal Coliforms, MPN/100 mL5,00030,0002,30030,00050,000 8,0002,20050,000 50,000Fecal Coliforms, MPN/100 mL70030,00020802,200 404017,000 50,000Enterococci, MPN/100 mL1,400110700202,400 1,100205,000 30,000Notes: nd = not detected; ns = not sampled (dry/ponded site)Appendix 7.2 City of Carlsbad Dry Weather Historical DataSite ID35A-1235C-1135C-51A35C-8536A-7936B-436B-636B-7436B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548C-2548D-2449A-6949D-1251B-151B-1955A-5155A-6255C-2558A-1359C-9062B-42008Temperature, °C 23.8 26.8 21.6 21.7 22.2 21.723.6 23.6 25.6 23.1 23.5 22.5 22.6 24.7 24.3 25.4 23.2 25.5 24.725.5 23.4 22.7 24.3 23.0 22.9 22.8 21.9 23.0 22.824.0 24.0 23.7pH8.48.7 8.1 7.4 7.9 5.57.4 7.3 7.7 7.6 5.7 6.9 6.7 8.0 7.6 8.0 7.4 7.3 7.87.8 7.1 7.4 7.8 7.6 8.1 7.4 7.7 7.5 8.17.4 7.3 5.2Turbidity, NTU8.120.56 21.59 2.40 1.98 8.3121.58 32.79 3.34 0.58 37.02 17.65 7.06 4.68 5.65 3.71 7.74 0.13 5.613.83 3.05 4.30 12.07 1.36 0.01 0.67 0.56 5.66 0.4583.00 5.12 27.21Conductivity, mS/cm2.702.62 5.24 6.59 2.84 6.506.65 5.03 5.91 3.27 5.36 8.96 10.56 1.63 2.65 7.74 12.04 3.06 3.722.09 6.14 2.48 8.09 5.75 5.42 2.67 1.85 5.76 7.983.64 6.07 10.59Detergents, mg/L0.500.50 1.00 0.68 0.50 0.500.50 0.50 0.50 0.38 0.50 0.68 0.75 0.13 0.25 0.68 0.75 0.50 0.250.50 0.50 0.50 0.68 0.25 0.50 0.25 0.13 0.68 0.680.50 0.68 0.75Ammonia-N, mg/L0.2640.159 0.272 0.263 0.261 0.3842.272 0.596 0.170 0.140 0.574 0.430 0.588 0.106 0.335 0.585 0.448 0.120 0.2460.575 0.297 0.472 0.324 0.631 1.331 0.183 0.041 0.265 0.2330.850 0.318 0.460Nitrate-N, mg/L2.374.59 72.43 2.19 1.42 1.610.94 1.74 0.90 1.01 2.22 1.73 1.64 1.79 2.64 3.33 3.52 1.74 1.783.76 1.07 5.82 16.82 4.20 1.97 3.17 3.63 2.27 1.201.25 3.10 2.08Orthophosphate-P, mg/L0.4380.172 8.525 0.023 0.131 0.0572.850 0.626 0.004 0.072 0.165 0.000 nd 0.362 0.526 0.086 0.081 0.082 0.1780.860 0.346 0.970 0.158 0.170 0.590 0.075 0.529 0.282 0.0410.274 0.089 0.280Oil & Grease, mg/L ndndndndndnd ndndTotal Hardness, mg/L5262,3001,8906341,0302,910 2,2402,970Dissolved Cadmium, mg/Lndndndndnd0.0118 ndndDissolved Copper, mg/L0.0060.0070.0080.0080.0060.014 0.0080.013Dissolved Lead, mg/L ndndndndndnd ndndDissolved Zinc, mg/L0.0560.0070.0160.0110.0110.056 0.1970.016Dissolved Zinc, mg/L0.0560.0070.0160.0110.0110.0560.1970.016Diazinon, µg/Lndndndndndnd ndndChlorpyrifos, µg/Lndndndndndnd ndndTotal Coliforms, MPN/100 mL1,3505,4001,90056,00023,00052,000 43,00016,000Fecal Coliforms, MPN/100 mL1,2003,6001,60037,00018,00029,000 1,4006,550Enterococci, MPN/100 mL200501009,00011,00038,000 1,1002,8502009Temperature, °C22.8 22.8 26.3 21.223.6 na23.8 20.9 28.6 23.0 25.5 22.8 22.5 22.2 23.8 25.2 24.3 24.4 23.424.6 22.0 23.5 21.824.6 24.0 24.5 25.0 23.025.0 25.8 22.3pH8.2 8.2 8.6 8.36.9 na7.1 7.5 7.8 7.5 4.5 6.8 6.7 8.0 7.5 7.8 7.3 7.5 8.18.3 7.1 7.5 7.68.1 7.5 7.8 7.6 7.97.4 7.8 4.9Turbidity, NTU3.21 nd 0.58 nd14.25 na2.42 4.09 5.29 11.07 2.25 16.84 16.63 17.89 1.96 9.90 10.92 3.49 0.961.37 3.27 0.89 6.140.09 3.86 1.26 13.62 0.8718.54 6.67 17.93Conductivity, mS/cm1.65 1.64 3.48 4.724.02 na5.56 1.63 8.80 2.68 5.09 8.97 9.05 1.62 2.74 7.07 5.97 2.65 3.182.75 5.99 1.26 4.325.49 2.57 1.52 5.04 9.222.22 3.38 11.35Detergents, mg/L0.25 nd 0.25 0.630.25 na0.50 0.50 0.75 0.38 0.50 0.88 0.88 0.25 0.50 0.50 0.63 0.25 0.250.25 0.50 0.25 0.500.50 0.25 0.13 0.50 0.500.25 0.25 0.75Ammonia-N, mg/L0.062 0.008 0.193 0.1610.231 na0.207 1.465 0.337 0.370 0.523 0.704 0.852 0.147 0.305 0.789 0.401 0.160 0.1500.205 0.272 0.170 1.2440.156 0.245 0.051 0.251 0.4060.830 0.367 0.755Nitrate-N, mg/L0.92 0.45 1.72 31.500.48 na0.34 0.87 0.04 1.09 0.62 nd nd 2.68 2.26 0.50 0.11 0.85 1.006.30 0.01 2.96 5.480.72 1.58 1.84 0.95 0.153.16 2.71 1.12Orthophosphate-P, mg/L1.593 0.158 0.004 0.6700.441 na0.013 0.361 0.133 1.006 0.092 nd 0.017 1.958 1.940 0.096 0.276 0.090 0.2600.817 1.076 1.943 1.0230.059 0.228 1.380 0.369 0.0510.711 0.839 0.033Oil & Grease, mg/L nd nd nd nd 41nd Total Hardness, mg/L332 8197151,1001,2402,780Dissolved Cadmium, mg/Lnd nd nd nd 0.002nd Dissolved Copper, mg/L0.0020.0020.0040.0020.0050.005Dissolved Copper, mg/L0.0020.0020.0040.0020.0050.005Dissolved Lead, mg/L nd nd nd nd nd nd Dissolved Zinc, mg/Lnd nd nd nd 0.032nd Diazinon, µg/Lnd nd nd nd 0.930nd Chlorpyrifos, µg/Lnd nd nd nd nd nd Total Coliforms, MPN/100 mL13,000 800300,00023,0001,600,00017,000Fecal Coliforms, MPN/100 mL70 8003,0003,0002,800700Enterococci, MPN/100 mL230 22024,00013,00013,0008002010Temperature, °C23.0 28.2 19.523.4 ns 22.8 22.5 23.1 22.7 25.7 24.2 21.5 22.2 19.4 21.0 24.9 19.9 24.0 20.6 21.4 21.6 21.5 19.7 22.120.520.5 20.9 20.6 22.9 27.6 28.6 22.1pH8.2 10.1 8.18.0 ns 7.6 6.6 8.2 7.9 7.9 5.3 6.7 6.7 8.3 7.5 7.9 7.6 7.6 8.0 7.9 8.5 7.1 7.2 7.98.07.7 7.6 8.2 7.6 7.3 7.7 5.0Turbidity, NTU0.55 2.78 1.25555 ns 0.85 5.89 6.70 11.85 4.65 10.62 5.94 9.74 4.93 2.75 7.85 8.33 0.52 0.94 0.70 1.98 2.49 4.30 39.640.690.81 19.45 6.46 448.00 3.81 5.38 17.24Conductivity, mS/cm1.47 3.63 4.322.33 ns 1.52 5.77 3.72 5.62 3.22 3.54 8.08 6.24 1.82 2.30 6.74 7.20 2.53 4.00 3.05 2.66 6.03 1.43 11.956.351.55 4.65 3.97 1.89 2.32 3.38 10.70Detergents, mg/Lnd 0.25 0.500.13 ns 2.00 0.38 0.68 0.75 0.25 0.25 0.75 0.75 0.75 0.25 0.50 0.75 0.25 0.38 0.25 0.13 0.25 0.25 1.000.500.50 0.50 0.25 0.75 0.38 0.25 0.75Ammonia-N, mg/Lnd 0.186 0.28017.760 ns 0.138 1.160 0.750 0.714 0.229 1.301 1.400 3.620 0.158 0.213 0.350 0.370 0.210 0.315 0.119 0.196 nd 1.325 1.4000.4000.178 0.406 0.880 1.620 4.130 2.690 1.230Nitrate-N,mg/Lnd 5.770 45.7002.800 ns nd nd 2.109 nd nd nd 2.950 nd 4.010 3.070 nd nd nd 1.360 4.750 2.390 nd 4.050 6.620nd2.175 nd nd 2.067 nd 1.287 1.219Orthophosphate-P, mg/Lnd nd 0.2302.184 ns 0.622 nd 0.671 nd nd nd nd nd 0.629 0.281 nd 0.124 nd 0.112 nd 0.440 0.739 0.558 0.237nd0.273 0.115 0.287 1.156 0.144 0.211 ndOil & Grease, mg/L nd ndndndndndTotal Hardness, mg/L342757551134037702210Total Hardness, mg/L342757551134037702210Dissolved Cadmium, mg/Lnd ndndnd0.014ndDissolved Copper, mg/Lnd ndndndndndDissolved Lead, mg/L nd ndndndndndDissolved Zinc, mg/Lnd ndndnd0.041ndDiazinon, µg/Lnd ndndndndndChlorpyrifos, µg/Lnd ndndndndndTotal Coliforms, MPN/100 mL30,000 13030,000300,00050,00028,000Fecal Coliforms, MPN/100 mL110 205,0007201,700500Enterococci, MPN/100 mL220 2302,8001,9003,5003,000Notes: nd = not detected; ns = not sampled (dry/ponded site)Appendix 7.2 City of Carlsbad Dry Weather Historical DataSite ID1D-201D-215A-45A-146B-46C-236C-349B-79B-3811B-4611B-4811D-5016C-6117B-817B-4617B-4717B-5217C-8317D-717D-3718D-618D-33A19C-121C-1422B-1125D-227B-4727B-7527D-1727D-31A28C-7028C-7329B-4430A-382011Temperature, °C20.8 24.7 22.7 20.7 23.1 20.3 22.1 ns 20.7 21.7 20.8 22.2 21.7 ns 23.5 ns 22.7 22 25.2 20.4 23.2 24.9 18.4 17.6 21.8 18.5 25 ns 23.7 ns 21.7 23.4 19.7 19.6pH7.82 7.85 7.04 8.42 7.97 7.89 8.24 ns 7.94 7.95 7.59 8.15 8.46 ns 7.42 ns 7.26 8.61 7.62 7.62 7.39 8.04 7.53 7.52 7.2 7.45 7.97 ns 8.41 ns 7.76 8.14 8.07 8.01Turbidity, NTU3.4 0.51 0.01 19.81 0.74 0.78 0.01 ns 1.84 4.8 15.26 5.34 0.8 ns 2.17 ns 9.53 0.45 39.2 3.71 17.12 2.82 1.95 6.09 31.45 23.78 28.13 ns 2.95 ns 0.37 0.98 7.71 2.93Conductivity, mS/cm5.47 4.72 14.76 2.01 2.69 5.29 5.29 ns 1.84 1.7 1.47 1.92 2.57 ns 4.53 ns 5.32 2.49 4.71 5.31 5.76 2.97 6.27 1.34 3.14 5.54 0.82 ns 2.35 ns 2.54 8.77 3.18 5.53Detergents, mg/L0.25 0.25 0.5 0.25 0.25 0.25 0.38 ns 0.75 0.13 0.5 0.13 0.25 ns 0.25 ns 0.25 0.25 0.25 0.5 0.5 0.13 0.5 0.25 0.25 0.25 0.25 ns 0.5 ns 0.75 0.5 0.13 0.5Ammonia-N, mg/L0.115 J 0.334 0.037 J 0.163 J 0.041 J 0.072 J 0.455 ns 1.141 0.3 0.382 0.095 J 0.105 J ns 0.247 ns 0.568 0.129 J 0.685 0.054 J 0.078 J 0.059 J 2.47 0.188 J 2.41 0.97 0.36 ns 0.397 ns 0.148 J 0.376 4.47 0.415Nitrate-N,mg/L4.818 6.647 14.45 1.092 J 0.966 J 2.599 3.673 ns 6.796 0.678 J 0.150 J 0.857 J 8.45 ns 0.653 J ns 0.239 J 2.753 0.156 J 1.649 0.037 J 0.576 J 7.153 6.64 0.881 J 0.770 J 0.469 J ns 31.84 ns 45.77 14.83 5.534 7.537Orthophosphate-P, mg/L0.2 0.171 0.061 J 0.417 0.207 0.229 0.194 ns 0.175 0.139 0.467 0.401 0.072 J ns 0.057 J ns 0.105 0.145 0.773 0.020 J 0.041 J 0.020 J 0.209 0.128 0.805 0.034 J 0.733 ns 0.009 J ns 0.035 J 0.2 0.174 0.156Oil & Grease, mg/L ndndndndnd ndndnd ndTotal Hardness, mg/L1,5904226291,7902,310 4075721,040 1,620Dissolved Cadmium, µg/L0.2 Jndndnd0.3 J nd0.3 Jnd ndDissolved Copper, µg/L2 J5 J2 J2 J5 J 3 J8 J9 J 7 JDissolved Lead, µg/LndndndndndndndndndDissolved Lead, µg/LndndndndndndndndndDissolved Zinc, µg/L6 J28 9 J7 J 22 17 J36 39 36Diazinon, µg/Lndnd ndnd nd ndnd nd ndChlorpyrifos, µg/Lndnd ndnd nd ndnd nd ndTotal Coliforms, MPN/100 mL13,00011,00017,0005,000130,000 11,00023,00050,000 130,000Fecal Coliforms, MPN/100 mL5008008,0005003,000 40405,000 50,000Enterococci, MPN/100 mL1701,700500404,200 40405,000 170Notes: nd = not detected; ns = not sampled (dry/ponded site); J = value is below the reporting limit; therefore result is an estimate.Appendix 7.2 City of Carlsbad Dry Weather Historical DataSite ID31B-3435A-1235C-1135C-51A35C-8536B-436B-636B-74*36B-9537A-1737A-7037B-1937B-2237C-2837C-2941D-3242C-9244B-4545A-4545C-1245G-1346D-8747C-547D-2548A-16548C-2548D-2449D-1251B-1955A-5155A-6255C-2558A-1359C-9562B-42011Temperature, °C25.7 ns22.1 22 19.8 ns ns 22.5 22.4 24.4 25.2 22.8 21.9 21.3 21.3 21.7 21.7 25.7 18.6 22.9 20.2 21.6 23 21.8 ns 17.9 20.3 20.5 21.3 21.2 20.8 24.5 22.5 21.4 21.4pH7.93 ns8.31 8.58 8.37 ns ns 7.92 4.44 7.25 7.79 7.93 4.57 6.79 7.14 8.29 8.01 7.9 7.15 7.55 7.89 7.9 8.39 7 ns 7.7 7.9 8.09 8.01 7.82 8.11 7.47 7.28 7.31 5.29Turbidity, NTU10.63 ns 0.01 0.76 0.27 ns ns 12.43 1.07 34.39 14.88 1.63 25.21 56 32.13 6.72 2.7 24.79 13.6 1.94 1.48 0.6 0.92 22.85 ns 3.42 18.18 0.41 6.26 7.66 1.99 16.47 6.9 6.76 26.37Conductivity, mS/cm7.87 ns1.47 3.42 4.32 ns ns 1.3 6.53 7.23 5.94 4.15 5.41 7.5 7.5 1.29 2.53 4.05 7.52 2.3 2.96 2.85 2.61 5.87 ns 2.23 5.93 6.29 1.76 4.54 8.19 3.66 2.34 6.04 8.97Detergents, mg/L0.25ns 0.13 0.38 0.5 ns ns 0.75 0.5 1.5 0.5 0.25 0.25 0.5 0.5 0.25 0.25 0.25 0.5 0.25 0.25 0.25 0.25 0.5 ns 0.25 0.63 0.75 0.5 0.75 0.5 0.5 0.25 0.25 0.5Ammonia-N, mg/L0.067 Jns 0.086 J 0.263 0.303 ns ns 0.128 J 1.953 0.846 0.836 0.357 0.886 0.796 0.474 0.088 J 0.299 0.887 0.356 0.138 J 0.186 J 0.211 0.398 2.936 ns 0.252 3.75 0.872 0.723 0.468 0.662 0.481 0.438 0.67 0.79Nitrate-N,mg/L6.53 ns 0.647 J 0.465 J 36.84 ns ns 0.929 J 0.972 J 1.022 J 0.091 J 0.253 J 0.654 J nd nd 1.275 2.746 0.339 J 0.913 J 0.863 J 1.426 4.87 1.575 0.977 J ns 18.07 13.47 1.046 J 2.997 0.868 J 0.681 0.858 J 1.493 3.306 1.326Orthophosphate-P, mg/L0.071 J ns 0.043 J 0.002 J 0.143 ns ns 0.361 0.060 J 0.222 0.052 J 0.039 J 0.047 J 0.020 J 0.026 J 0.779 0.243 0.21 0.127 0.059 J 0.113 0.038 J 0.317 0.932 ns 0.837 0.189 0.007 J 0.227 0.050 J 0.037 J 0.263 0.612 0.142 0.040 JOil & Grease, mg/L nd ndndndndndTotal Hardness, mg/L322 886568 1,0301,6002,530Dissolved Cadmium, µg/Lnd ndndnd5ndDissolved Copper, µg/L3 J 2 J7 J4 J9 J6 JDissolved Lead, µg/Lndndndnd1 JndDissolved Lead, µg/Lndndndnd1 JndDissolved Zinc, µg/L8 J 6 J11 J9 J62 11 JDiazinon, µg/Lnd ndndndndndChlorpyrifos, µg/Lnd ndndndndndTotal Coliforms, MPN/100 mL23,000 1,700220,00022,000130,00030,000Fecal Coliforms, MPN/100 mL700 5008,0005,00090,0005,000Enterococci, MPN/100 mL230 11050,00014,0001,70022,000Notes: nd = not detected; ns = not sampled (dry/ponded site); J = value is below the reporting limit; therefore result is an estimate.Appendix 7.2 Appendix C Photographs of Sampling Locations Appendix 7.2 Site 1C-21 Site 1D-20 Site 1D-21 Appendix 7.2 Site 5A-4 Site 5A-14 Site 6B-4 Appendix 7.2 Site 6C-23 Site 6C-34 Site 9B-7 Appendix 7.2 Site 9B-38 Site 11B-46 Site 11B-48 Appendix 7.2 Site 11D-50 Site 16C-61 Site 17B-8 Appendix 7.2 Site 17B-46 Site 17B-47 Site 17B-52 Appendix 7.2 Site 17C-83 Site 17D-7 Site 17D-37 Appendix 7.2 Site 18D-6 Site 18D-33A Site 19C-1 Appendix 7.2 Site 21C-14 Site 22B-11 Site 25D-2 Appendix 7.2 Site 27B-47 Site 27B-75 Site 27D-17 Appendix 7.2 Site 27D-31A Site 28C-70 Site 28C-73 Appendix 7.2 Site 29B-44 Site 30A-38 Site 31B-34 Appendix 7.2 Site 35A-12 Site 35C-11 Site 35C-51A Appendix 7.2 Site 35C-85 Site 36B-4 Site 36B-6 Appendix 7.2 Site 36B-43 Site 36B-74 Site 36B-95 Appendix 7.2 Site 37A-17 Site 37A-70 Site 37B-19 Appendix 7.2 Site 37B-22 Site 37C-28 Site 37C-29 Appendix 7.2 Site 41D-32 Site 42C-92 Site 44B-45 Appendix 7.2 Site 45A-45 Site 45C-12 Site 45G-13 Appendix 7.2 Site 46D-87 Site 47C-5 Site 47D-25 Appendix 7.2 Site 48A-165 Site 48C-25 Site 48D-24 Appendix 7.2 Site 49C-55 Site 49D-12 Site 51B-19 Appendix 7.2 Site 55A-51 Site 55A-62 Site 55C-25 Appendix 7.2 Site 58A-13 Site 59C-90 Site 62B-4 Appendix 7.2 Appendix D Field Datasheets and Trash Assessment Forms Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix 7.2 Appendix E Laboratory Analytical Reports Appendix 7.2 Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES Date Received 1D-20 12G0138-01 07/05/12 13:20 07/05/12 16:49Stormwater 1D-21 12G0138-02 07/05/12 14:20 07/05/12 16:49Stormwater The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Metals (Dissolved) by EPA 200 Series Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 1D-20 (12G0138-01) Stormwater Sampled: 07/05/12 13:20 Received: 07/05/12 16:49 2070535 07/05/12 07/06/12 mg/l 5 J0.003 0.002 0.100Zinc EPA 200.8 """"""Cadmium ND 0.0050.001 "" """ J0.007 0.005 0.050Copper " """"""Lead ND 0.0250.005 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Organophosphorus Pesticides by EPA Method 8141A Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 1D-20 (12G0138-01) Stormwater Sampled: 07/05/12 13:20 Received: 07/05/12 16:49 EPA 8141A07/09/12 07/14/12 ug/l 20711741ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "96 % 60-130Surrogate: Triphenyl phosphate "" " "92 % 60-130Surrogate: Tribuytlphosphate The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Conventional Chemistry Parameters by Standard/EPA Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 1D-20 (12G0138-01) Stormwater Sampled: 07/05/12 13:20 Received: 07/05/12 16:49 2070943 07/09/12 07/10/12 mg CaCO3/L 101570100 100Hardness (Total)EPA 200.7 2071227 07/12/12 07/12/12 mg/l "5.91 0.09 0.50Nitrate/Nitrite as N SM4500 NO3 E 2070936 07/11/12 07/11/12 "11.0 0.3 0.5Total Kjeldahl Nitrogen SM4500 N C 2071256 07/12/12 07/12/12 ""6.9 0.5 0.5Total Nitrogen Calculation EPA 1664A07/12/12 07/12/12 " 2071156"Oil & Grease ND 55 2071043 07/10/12 07/10/12 ""0.19 0.02 0.05Phosphorus, Total SM4500 P B, E 2071320 07/12/12 07/13/12 ""J4.0 1.0 20.0Total Suspended Solids SM2540 D 1D-21 (12G0138-02) Stormwater Sampled: 07/05/12 14:20 Received: 07/05/12 16:49 2071227 07/12/12 07/12/12 mg/l 109.76 0.09 0.50Nitrate/Nitrite as N SM4500 NO3 E 2070936 07/11/12 07/11/12 "10.5 0.3 0.5Total Kjeldahl Nitrogen SM4500 N C 2071256 07/12/12 07/12/12 ""10.3 0.5 0.5Total Nitrogen Calculation 2071043 07/10/12 07/10/12 ""0.27 0.02 0.05Phosphorus, Total SM4500 P B, E SM2540 D07/12/12 07/13/12 " 2071320"Total Suspended Solids ND 20.01.0 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Microbiological Parameters by Standard Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 1D-20 (12G0138-01) Stormwater Sampled: 07/05/12 13:20 Received: 07/05/12 16:49 2070622 07/05/12 07/09/12 MPN/100 ml 1002300200 200Total Coliforms SM 9221 B, E " " 07/08/12 "1050020 20Fecal Coliforms " 2070623 " 07/09/12 ""260 20 20Enterococcus SM 9230 A, B 1D-21 (12G0138-02) Stormwater Sampled: 07/05/12 14:20 Received: 07/05/12 16:49 2070622 07/05/12 07/09/12 MPN/100 ml 1008000200 200Total Coliforms SM 9221 B, E " " 07/08/12 "1034020 20Fecal Coliforms " 2070623 " 07/09/12 ""2200 20 20Enterococcus SM 9230 A, B The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2070535 Blank (2070535-BLK1)Prepared: 07/05/12 Analyzed: 07/06/12 Cadmium mg/l0.001ND 0.0002 Copper "0.010ND 0.001 Lead "0.005ND 0.001 Zinc "0.020ND 0.0003 LCS (2070535-BS1)Prepared: 07/05/12 Analyzed: 07/06/12 Lead mg/l 0.0500 102 75-1250.0050.051 0.001 Cadmium " 0.0500 103 75-1250.0010.051 0.0002 Copper " 0.0500 102 75-1250.0100.051 0.001 Zinc " 0.0500 100 75-1250.0200.050 0.0003 LCS Dup (2070535-BSD1)Prepared: 07/05/12 Analyzed: 07/06/12 Lead mg/l 0.0500 98 75-125 5 200.0050.049 0.001 Cadmium " 0.0500 102 75-125 0.5 200.0010.051 0.0002 Copper " 0.0500 100 75-125 2 200.0100.050 0.001 Zinc " 0.0500 99 75-125 0.2 200.0200.050 0.0003 Duplicate (2070535-DUP1)Prepared: 07/05/12 Analyzed: 07/06/12 Source: 12F0787-01 Lead mg/l ND 200.005ND 0.001 Zinc " 0.005 6 20 J0.0200.005 0.0003 Cadmium "ND 20 J0.0010.0002 0.0002 Copper "0.002 14 20 J0.0100.003 0.001 Matrix Spike (2070535-MS1)Prepared: 07/05/12 Analyzed: 07/06/12 Source: 12F0787-01 Lead mg/l 0.0500 ND 104 75-1250.0050.052 0.001 Cadmium " 0.0500 ND 101 75-1250.0010.051 0.0002 Zinc " 0.0500 0.005 94 75-1250.0200.052 0.0003 Copper " 0.0500 0.002 92 75-1250.0100.048 0.001 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2070535 Matrix Spike Dup (2070535-MSD1)Prepared: 07/05/12 Analyzed: 07/06/12 Source: 12F0787-01 Zinc mg/l 0.0500 0.005 91 75-125 3 200.0200.051 0.0003 Cadmium " 0.0500 ND 98 75-125 4 200.0010.049 0.0002 Copper " 0.0500 0.002 89 75-125 3 200.0100.047 0.001 Lead " 0.0500 ND 107 75-125 3 200.0050.053 0.001 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organophosphorus Pesticides by EPA Method 8141A - Quality Control MDL Batch 2071174 Blank (2071174-BLK1)Prepared: 07/09/12 Analyzed: 07/14/12 Chlorpyrifos ug/l0.05ND 0.04 Diazinon "0.05ND 0.04 " 0.250 60-130Surrogate: Triphenyl phosphate 840.210 " 0.250 60-130Surrogate: Tribuytlphosphate 800.200 LCS (2071174-BS1)Prepared: 07/09/12 Analyzed: 07/14/12 Bolstar ug/l 0.500 100 60-1300.100.50 0.09 Diazinon " 0.500 84 60-1300.050.42 0.04 Ethoprop " 0.500 88 60-1300.050.44 0.05 Mevinphos " 0.500 80 60-1300.250.40 0.21 Methyl parathion " 0.500 80 60-1300.100.40 0.07 Phorate " 0.500 92 60-1300.050.46 0.03 Ronnel " 0.500 92 60-1300.250.46 0.16 Trichlorinate " 0.500 88 60-1300.050.44 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 1080.270 " 0.250 60-130Surrogate: Tribuytlphosphate 920.230 LCS Dup (2071174-BSD1)Prepared: 07/09/12 Analyzed: 07/14/12 Bolstar ug/l 0.500 96 60-130 4 300.100.48 0.09 Diazinon " 0.500 84 60-130 0 300.050.42 0.04 Ethoprop " 0.500 84 60-130 5 300.050.42 0.05 Mevinphos " 0.500 66 60-130 19 300.250.33 0.21 Methyl parathion " 0.500 86 60-130 7 300.100.43 0.07 Phorate " 0.500 80 60-130 14 300.050.40 0.03 Ronnel " 0.500 88 60-130 4 300.250.44 0.16 Trichlorinate " 0.500 82 60-130 7 300.050.41 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 1000.250 " 0.250 60-130Surrogate: Tribuytlphosphate 880.220 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2070620 Blank (2070620-BLK1)Prepared & Analyzed: 07/06/12 Ammonia as N mg/l0.10ND 0.02 LCS (2070620-BS1)Prepared & Analyzed: 07/06/12 Ammonia as N mg/l 0.820 93 80-1200.100.76 0.02 LCS Dup (2070620-BSD1)Prepared & Analyzed: 07/06/12 Ammonia as N mg/l 0.820 96 80-120 3 200.100.79 0.02 Duplicate (2070620-DUP1)Prepared & Analyzed: 07/06/12 Source: 12G0045-01 Ammonia as N mg/l 0.14 3 200.100.14 0.02 Matrix Spike (2070620-MS1)Prepared & Analyzed: 07/06/12 Source: 12G0045-01 Ammonia as N mg/l 0.820 0.14 91 80-1200.100.89 0.02 Matrix Spike Dup (2070620-MSD1)Prepared & Analyzed: 07/06/12 Source: 12G0045-01 Ammonia as N mg/l 0.820 0.14 93 80-120 2 200.100.90 0.02 Batch 2070936 Blank (2070936-BLK1)Prepared & Analyzed: 07/10/12 Total Kjeldahl Nitrogen mg/l0.5ND 0.3 LCS (2070936-BS1)Prepared & Analyzed: 07/10/12 Total Kjeldahl Nitrogen mg/l 4.10 92 80-1200.53.8 0.3 LCS Dup (2070936-BSD1)Prepared & Analyzed: 07/10/12 Total Kjeldahl Nitrogen mg/l 4.10 91 80-120 1 200.53.7 0.3 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2070936 Duplicate (2070936-DUP1)Prepared & Analyzed: 07/10/12 Source: 12G0045-04 Total Kjeldahl Nitrogen mg/l 1.4 0.3 200.51.4 0.3 Matrix Spike (2070936-MS1)Prepared & Analyzed: 07/10/12 Source: 12G0045-04 Total Kjeldahl Nitrogen mg/l 4.10 1.4 83 80-1200.54.8 0.3 Matrix Spike Dup (2070936-MSD1)Prepared & Analyzed: 07/10/12 Source: 12G0045-04 Total Kjeldahl Nitrogen mg/l 4.10 1.4 81 80-120 2 200.54.8 0.3 Batch 2070943 Blank (2070943-BLK1)Prepared: 07/09/12 Analyzed: 07/10/12 Hardness (Total)mg CaCO3/L10ND 10 Duplicate (2070943-DUP1)Prepared: 07/09/12 Analyzed: 07/10/12 Source: 12G0186-01 Hardness (Total)mg CaCO3/L 2620 4 201002720 100 Batch 2071043 Blank (2071043-BLK1)Prepared & Analyzed: 07/10/12 Phosphorus, Total mg/l0.05ND 0.02 LCS (2071043-BS1)Prepared & Analyzed: 07/10/12 Phosphorus, Total mg/l 0.500 105 80-1200.050.52 0.02 LCS Dup (2071043-BSD1)Prepared & Analyzed: 07/10/12 Phosphorus, Total mg/l 0.500 110 80-120 4 200.050.55 0.02 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 11 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2071043 Duplicate (2071043-DUP1)Prepared & Analyzed: 07/10/12 Source: 12F0742-01 Phosphorus, Total mg/l 0.14 0.7 200.050.14 0.02 Matrix Spike (2071043-MS1)Prepared & Analyzed: 07/10/12 Source: 12F0742-01 Phosphorus, Total mg/l 0.500 0.14 92 80-1200.050.60 0.02 Matrix Spike Dup (2071043-MSD1)Prepared & Analyzed: 07/10/12 Source: 12F0742-01 Phosphorus, Total mg/l 0.500 0.14 97 80-120 4 200.050.63 0.02 Batch 2071156 Blank (2071156-BLK1)Prepared & Analyzed: 07/11/12 Oil & Grease mg/l5ND 5 LCS (2071156-BS1)Prepared & Analyzed: 07/11/12 Oil & Grease mg/l 40.0 97 78-114539 5 LCS Dup (2071156-BSD1)Prepared & Analyzed: 07/11/12 Oil & Grease mg/l 40.0 93 78-114 4 20537 5 Batch 2071227 Blank (2071227-BLK1)Prepared & Analyzed: 07/12/12 Nitrate/Nitrite as N mg/l0.05ND 0.009 LCS (2071227-BS1)Prepared & Analyzed: 07/12/12 Nitrate/Nitrite as N mg/l 0.500 117 80-1200.050.58 0.009 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 12 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2071227 LCS Dup (2071227-BSD1)Prepared & Analyzed: 07/12/12 Nitrate/Nitrite as N mg/l 0.500 108 80-120 7 200.050.54 0.009 Duplicate (2071227-DUP1)Prepared & Analyzed: 07/12/12 Source: 12G0251-01 Nitrate/Nitrite as N mg/l 0.94 3 200.500.97 0.09 Matrix Spike (2071227-MS1)Prepared & Analyzed: 07/12/12 Source: 12G0251-01 Nitrate/Nitrite as N mg/l 5.00 0.94 113 80-1200.506.60 0.09 Matrix Spike Dup (2071227-MSD1)Prepared & Analyzed: 07/12/12 Source: 12G0251-01 Nitrate/Nitrite as N mg/l 5.00 0.94 113 80-120 0.3 200.506.58 0.09 Batch 2071320 Blank (2071320-BLK1)Prepared: 07/12/12 Analyzed: 07/13/12 Total Suspended Solids mg/l20.0ND 1.0 Duplicate (2071320-DUP1)Prepared: 07/12/12 Analyzed: 07/13/12 Source: 12G0138-01 Total Suspended Solids mg/l 4.0 0 20 J20.04.0 1.0 Reference (2071320-SRM1)Prepared: 07/12/12 Analyzed: 07/13/12 Total Suspended Solids mg/l 100 96 82.9-11020.096.0 1.0 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 13 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0138 Carlsbad Dry Weather Notes and Definitions J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Sample results reported on a dry weight basis (if indicated in units column) Relative Percent DifferenceRPD dry Not ReportedNR Analyte NOT DETECTED at or above the reporting limit (or method detection limit when specified)ND MDL Method detection limit (indicated per client's request) The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 14 of 14 EnviroMatrix Analytical, Inc. Appendix 7.2 Appendix 7.2 Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES Date Received 1C-21 12G0158-01 07/06/12 09:30 07/06/12 15:20Stormwater 16C-61 12G0158-02 07/06/12 11:00 07/06/12 15:20Stormwater 19C-1 12G0158-03 07/06/12 12:30 07/06/12 15:20Stormwater 21C-14 12G0158-04 07/06/12 13:20 07/06/12 15:20Stormwater The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Total Metals by EPA 200 Series Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 19C-1 (12G0158-03) Stormwater Sampled: 07/06/12 12:30 Received: 07/06/12 15:20 2071055 07/10/12 07/12/12 mg/l 50.058 0.0005 0.025Manganese EPA 200.8 "" "ug/l "12.4 2.50 5.00Selenium " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Metals (Dissolved) by EPA 200 Series Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 16C-61 (12G0158-02) Stormwater Sampled: 07/06/12 11:00 Received: 07/06/12 15:20 2071136 07/11/12 07/12/12 mg/l 1 J0.011 0.0003 0.020Zinc EPA 200.8 """"""Lead ND 0.0050.001 "" """ J0.006 0.001 0.010Copper " """"""Cadmium ND 0.0010.0002 19C-1 (12G0158-03) Stormwater Sampled: 07/06/12 12:30 Received: 07/06/12 15:20 2071136 07/11/12 07/12/12 mg/l 5 J0.011 0.005 0.050Copper EPA 200.8 """"""Cadmium ND 0.0050.001 """"""Lead ND 0.0250.005 "" """ J0.010 0.002 0.100Zinc " 21C-14 (12G0158-04) Stormwater Sampled: 07/06/12 13:20 Received: 07/06/12 15:20 EPA 200.807/11/12 07/12/12 mg/l 20711365LeadND0.0250.005 """"""Cadmium ND 0.0050.001 """"""Copper ND 0.0500.005 "" """ J0.009 0.002 0.100Zinc " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Organophosphorus Pesticides by EPA Method 8141A Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 16C-61 (12G0158-02) Stormwater Sampled: 07/06/12 11:00 Received: 07/06/12 15:20 EPA 8141A07/09/12 07/14/12 ug/l 20711741ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "96 % 60-130Surrogate: Triphenyl phosphate "" " "100 % 60-130Surrogate: Tribuytlphosphate 19C-1 (12G0158-03) Stormwater Sampled: 07/06/12 12:30 Received: 07/06/12 15:20 EPA 8141A07/09/12 07/14/12 ug/l 20711741ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "92 % 60-130Surrogate: Triphenyl phosphate "" " "92 % 60-130Surrogate: Tribuytlphosphate 21C-14 (12G0158-04) Stormwater Sampled: 07/06/12 13:20 Received: 07/06/12 15:20 EPA 8141A07/09/12 07/14/12 ug/l 20711741ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "100 % 60-130Surrogate: Triphenyl phosphate "" " "80 % 60-130Surrogate: Tribuytlphosphate The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Conventional Chemistry Parameters by Standard/EPA Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 1C-21 (12G0158-01) Stormwater Sampled: 07/06/12 09:30 Received: 07/06/12 15:20 2071227 07/12/12 07/12/12 mg/l 20.92 0.02 0.10Nitrate/Nitrite as N SM4500 NO3 E 2070936 07/11/12 07/11/12 "11.4 0.3 0.5Total Kjeldahl Nitrogen SM4500 N C 2071256 07/12/12 07/12/12 ""2.3 0.5 0.5Total Nitrogen Calculation 2071043 07/10/12 07/10/12 ""0.21 0.02 0.05Phosphorus, Total SM4500 P B, E 2071047 07/10/12 07/11/12 ""J13.0 1.0 20.0Total Suspended Solids SM2540 D 16C-61 (12G0158-02) Stormwater Sampled: 07/06/12 11:00 Received: 07/06/12 15:20 2070943 07/09/12 07/10/12 mg CaCO3/L 10550100 100Hardness (Total)EPA 200.7 EPA 1664A07/16/12 07/16/12 mg/l 20716721Oil & Grease ND 55 SM2540 D07/10/12 07/11/12 " 2071047"Total Suspended Solids ND 20.01.0 19C-1 (12G0158-03) Stormwater Sampled: 07/06/12 12:30 Received: 07/06/12 15:20 2070943 07/09/12 07/10/12 mg CaCO3/L 102800100 100Hardness (Total)EPA 200.7 EPA 1664A07/16/12 07/16/12 mg/l 20716721Oil & Grease ND 55 2071046 07/10/12 07/11/12 ""5430 1.0 20.0Total Dissolved Solids SM2540 C 2071047 " 07/11/12 ""J6.0 1.0 20.0Total Suspended Solids SM2540 D 2071045 07/10/12 07/10/12 " 1002020100 500Sulfate as SO4 SM4500 SO4 E 21C-14 (12G0158-04) Stormwater Sampled: 07/06/12 13:20 Received: 07/06/12 15:20 2070943 07/09/12 07/10/12 mg CaCO3/L 10296100 100Hardness (Total)EPA 200.7 2071227 07/12/12 07/12/12 mg/l 10.17 0.009 0.05Nitrate/Nitrite as N SM4500 NO3 E 2070936 07/11/12 07/11/12 ""0.8 0.3 0.5Total Kjeldahl Nitrogen SM4500 N C 2071256 07/12/12 07/12/12 ""1.0 0.5 0.5Total Nitrogen Calculation EPA 1664A07/16/12 07/16/12 " 2071672"Oil & Grease ND 55 2071043 07/10/12 07/10/12 ""0.21 0.02 0.05Phosphorus, Total SM4500 P B, E 2071047 07/10/12 07/11/12 ""J9.0 1.0 20.0Total Suspended Solids SM2540 D The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Microbiological Parameters by Standard Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 1C-21 (12G0158-01) Stormwater Sampled: 07/06/12 09:30 Received: 07/06/12 15:20 2070707 07/06/12 07/10/12 MPN/100 ml 10013000200 200Total Coliforms SM 9221 B, E " " 07/09/12 "1034020 20Fecal Coliforms " 2070708 " 07/10/12 ""800 20 20Enterococcus SM 9230 A, B 16C-61 (12G0158-02) Stormwater Sampled: 07/06/12 11:00 Received: 07/06/12 15:20 2070707 07/06/12 07/10/12 MPN/100 ml 1005000200 200Total Coliforms SM 9221 B, E " " 07/09/12 "1017020 20Fecal Coliforms " 2070708 " 07/10/12 ""80 20 20Enterococcus SM 9230 A, B 19C-1 (12G0158-03) Stormwater Sampled: 07/06/12 12:30 Received: 07/06/12 15:20 2070707 07/06/12 07/10/12 MPN/100 ml 1000500002000 2000Total Coliforms SM 9221 B, E " " 07/09/12 "10110020 20Fecal Coliforms " 2070708 " 07/10/12 ""1400 20 20Enterococcus SM 9230 A, B 21C-14 (12G0158-04) Stormwater Sampled: 07/06/12 13:20 Received: 07/06/12 15:20 2070707 07/06/12 07/10/12 MPN/100 ml 1007000200 200Total Coliforms SM 9221 B, E " " 07/09/12 "1050020 20Fecal Coliforms " 2070708 " 07/10/12 ""110 20 20Enterococcus SM 9230 A, B The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Total Metals by EPA 200 Series Methods - Quality Control MDL Batch 2071055 Blank (2071055-BLK1)Prepared: 07/10/12 Analyzed: 07/11/12 Manganese mg/l0.005ND 0.0001 Selenium ug/l1.00ND 0.500 LCS (2071055-BS1)Prepared: 07/10/12 Analyzed: 07/11/12 Selenium ug/l 100 104 75-1251.00104 0.500 Manganese mg/l 0.100 94 85-1150.0050.094 0.0001 LCS Dup (2071055-BSD1)Prepared: 07/10/12 Analyzed: 07/11/12 Manganese mg/l 0.100 94 85-115 0.6 200.0050.094 0.0001 Selenium ug/l 100 107 75-125 2 201.00107 0.500 Duplicate (2071055-DUP1)Prepared: 07/10/12 Analyzed: 07/11/12 Source: 12G0225-01 Manganese mg/l 0.091 28 200.0050.069 0.0001 Selenium ug/l 3.50 7 201.003.25 0.500 Matrix Spike (2071055-MS1)Prepared: 07/10/12 Analyzed: 07/11/12 Source: 12G0225-01 Selenium ug/l 100 3.50 102 75-1251.00105 0.500 Manganese mg/l 0.100 0.091 58 70-1300.0050.149 0.0001 Matrix Spike Dup (2071055-MSD1)Prepared: 07/10/12 Analyzed: 07/11/12 Source: 12G0225-01 Manganese mg/l 0.100 0.091 50 70-130 5 200.0050.141 0.0001 Selenium ug/l 100 3.50 97 75-125 4 201.00101 0.500 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2071136 Blank (2071136-BLK1)Prepared: 07/11/12 Analyzed: 07/12/12 Cadmium mg/l0.001ND 0.0002 Zinc "0.020ND 0.0003 Copper "0.010ND 0.001 Lead "0.005ND 0.001 LCS (2071136-BS1)Prepared: 07/11/12 Analyzed: 07/12/12 Lead mg/l 0.0500 104 75-1250.0050.052 0.001 Cadmium " 0.0500 103 75-1250.0010.052 0.0002 Copper " 0.0500 102 75-1250.0100.051 0.001 Zinc " 0.0500 103 75-1250.0200.051 0.0003 LCS Dup (2071136-BSD1)Prepared: 07/11/12 Analyzed: 07/12/12 Cadmium mg/l 0.0500 104 75-125 1 200.0010.052 0.0002 Copper " 0.0500 103 75-125 0.9 200.0100.052 0.001 Zinc " 0.0500 102 75-125 0.7 200.0200.051 0.0003 Lead " 0.0500 103 75-125 1 200.0050.051 0.001 Duplicate (2071136-DUP1)Prepared: 07/11/12 Analyzed: 07/12/12 Source: 12G0186-01 Zinc mg/l 0.003 2 20 J0.0200.003 0.0003 Lead "ND 200.025ND 0.005 Copper "0.014 9 200.0100.016 0.001 Cadmium "0.0002 5 20 J0.0010.0002 0.0002 Matrix Spike (2071136-MS1)Prepared: 07/11/12 Analyzed: 07/12/12 Source: 12G0186-01 Copper mg/l 0.0500 0.014 92 75-1250.0100.060 0.001 Cadmium " 0.0500 0.0002 87 75-1250.0010.044 0.0002 Lead " 0.0500 ND 118 75-1250.0050.059 0.001 Zinc " 0.0500 0.003 91 75-125 J0.1000.048 0.002 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2071136 Matrix Spike Dup (2071136-MSD1)Prepared: 07/11/12 Analyzed: 07/12/12 Source: 12G0186-01 Copper mg/l 0.0500 0.014 88 75-125 3 200.0100.059 0.001 Lead " 0.0500 ND 120 75-125 2 200.0050.060 0.001 Zinc " 0.0500 0.003 85 75-125 6 20 J0.1000.045 0.002 Cadmium " 0.0500 0.0002 82 75-125 6 200.0010.041 0.0002 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organophosphorus Pesticides by EPA Method 8141A - Quality Control MDL Batch 2071174 Blank (2071174-BLK1)Prepared: 07/09/12 Analyzed: 07/14/12 Chlorpyrifos ug/l0.05ND 0.04 Diazinon "0.05ND 0.04 " 0.250 60-130Surrogate: Triphenyl phosphate 840.210 " 0.250 60-130Surrogate: Tribuytlphosphate 800.200 LCS (2071174-BS1)Prepared: 07/09/12 Analyzed: 07/14/12 Bolstar ug/l 0.500 100 60-1300.100.50 0.09 Diazinon " 0.500 84 60-1300.050.42 0.04 Ethoprop " 0.500 88 60-1300.050.44 0.05 Mevinphos " 0.500 80 60-1300.250.40 0.21 Methyl parathion " 0.500 80 60-1300.100.40 0.07 Phorate " 0.500 92 60-1300.050.46 0.03 Ronnel " 0.500 92 60-1300.250.46 0.16 Trichlorinate " 0.500 88 60-1300.050.44 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 1080.270 " 0.250 60-130Surrogate: Tribuytlphosphate 920.230 LCS Dup (2071174-BSD1)Prepared: 07/09/12 Analyzed: 07/14/12 Bolstar ug/l 0.500 96 60-130 4 300.100.48 0.09 Diazinon " 0.500 84 60-130 0 300.050.42 0.04 Ethoprop " 0.500 84 60-130 5 300.050.42 0.05 Mevinphos " 0.500 66 60-130 19 300.250.33 0.21 Methyl parathion " 0.500 86 60-130 7 300.100.43 0.07 Phorate " 0.500 80 60-130 14 300.050.40 0.03 Ronnel " 0.500 88 60-130 4 300.250.44 0.16 Trichlorinate " 0.500 82 60-130 7 300.050.41 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 1000.250 " 0.250 60-130Surrogate: Tribuytlphosphate 880.220 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 11 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2070936 Blank (2070936-BLK1)Prepared & Analyzed: 07/10/12 Total Kjeldahl Nitrogen mg/l0.5ND 0.3 LCS (2070936-BS1)Prepared & Analyzed: 07/10/12 Total Kjeldahl Nitrogen mg/l 4.10 92 80-1200.53.8 0.3 LCS Dup (2070936-BSD1)Prepared & Analyzed: 07/10/12 Total Kjeldahl Nitrogen mg/l 4.10 91 80-120 1 200.53.7 0.3 Duplicate (2070936-DUP1)Prepared & Analyzed: 07/10/12 Source: 12G0045-04 Total Kjeldahl Nitrogen mg/l 1.4 0.3 200.51.4 0.3 Matrix Spike (2070936-MS1)Prepared & Analyzed: 07/10/12 Source: 12G0045-04 Total Kjeldahl Nitrogen mg/l 4.10 1.4 83 80-1200.54.8 0.3 Matrix Spike Dup (2070936-MSD1)Prepared & Analyzed: 07/10/12 Source: 12G0045-04 Total Kjeldahl Nitrogen mg/l 4.10 1.4 81 80-120 2 200.54.8 0.3 Batch 2070943 Blank (2070943-BLK1)Prepared: 07/09/12 Analyzed: 07/10/12 Hardness (Total)mg CaCO3/L10ND 10 Duplicate (2070943-DUP1)Prepared: 07/09/12 Analyzed: 07/10/12 Source: 12G0186-01 Hardness (Total)mg CaCO3/L 2620 4 201002720 100 Batch 2071043 Blank (2071043-BLK1)Prepared & Analyzed: 07/10/12 Phosphorus, Total mg/l0.05ND 0.02 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 12 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2071043 LCS (2071043-BS1)Prepared & Analyzed: 07/10/12 Phosphorus, Total mg/l 0.500 105 80-1200.050.52 0.02 LCS Dup (2071043-BSD1)Prepared & Analyzed: 07/10/12 Phosphorus, Total mg/l 0.500 110 80-120 4 200.050.55 0.02 Duplicate (2071043-DUP1)Prepared & Analyzed: 07/10/12 Source: 12F0742-01 Phosphorus, Total mg/l 0.14 0.7 200.050.14 0.02 Matrix Spike (2071043-MS1)Prepared & Analyzed: 07/10/12 Source: 12F0742-01 Phosphorus, Total mg/l 0.500 0.14 92 80-1200.050.60 0.02 Matrix Spike Dup (2071043-MSD1)Prepared & Analyzed: 07/10/12 Source: 12F0742-01 Phosphorus, Total mg/l 0.500 0.14 97 80-120 4 200.050.63 0.02 Batch 2071045 Blank (2071045-BLK1)Prepared & Analyzed: 07/10/12 Sulfate as SO4 mg/l5.0ND 1.0 LCS (2071045-BS1)Prepared & Analyzed: 07/10/12 Sulfate as SO4 mg/l 10.0 101 80-1205.010.1 1.0 LCS Dup (2071045-BSD1)Prepared & Analyzed: 07/10/12 Sulfate as SO4 mg/l 10.0 102 80-120 2 205.010.2 1.0 Duplicate (2071045-DUP1)Prepared & Analyzed: 07/10/12 Source: 12G0055-01 Sulfate as SO4 mg/l 245 1 2050.0248 10.0 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 13 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2071045 Matrix Spike (2071045-MS1)Prepared & Analyzed: 07/10/12 Source: 12G0055-01 Sulfate as SO4 mg/l 100 245 99 80-12050.0345 10.0 Matrix Spike Dup (2071045-MSD1)Prepared & Analyzed: 07/10/12 Source: 12G0055-01 Sulfate as SO4 mg/l 100 245 106 80-120 2 2050.0351 10.0 Batch 2071046 Blank (2071046-BLK1)Prepared: 07/10/12 Analyzed: 07/11/12 Total Dissolved Solids mg/l20.0ND 1.0 Duplicate (2071046-DUP1)Prepared: 07/10/12 Analyzed: 07/11/12 Source: 12G0061-01 Total Dissolved Solids mg/l 1390 1 2020.01400 1.0 Reference (2071046-SRM1)Prepared: 07/10/12 Analyzed: 07/11/12 Total Dissolved Solids mg/l 272 97 74.6-125.420.0264 1.0 Batch 2071047 Blank (2071047-BLK1)Prepared: 07/10/12 Analyzed: 07/11/12 Total Suspended Solids mg/l20.0ND 1.0 Duplicate (2071047-DUP1)Prepared: 07/10/12 Analyzed: 07/11/12 Source: 12G0061-01 Total Suspended Solids mg/l ND 2020.0ND 1.0 Reference (2071047-SRM1)Prepared: 07/10/12 Analyzed: 07/11/12 Total Suspended Solids mg/l 100 106 82.9-11020.0106 1.0 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 14 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2071227 Blank (2071227-BLK1)Prepared & Analyzed: 07/12/12 Nitrate/Nitrite as N mg/l0.05ND 0.009 LCS (2071227-BS1)Prepared & Analyzed: 07/12/12 Nitrate/Nitrite as N mg/l 0.500 117 80-1200.050.58 0.009 LCS Dup (2071227-BSD1)Prepared & Analyzed: 07/12/12 Nitrate/Nitrite as N mg/l 0.500 108 80-120 7 200.050.54 0.009 Duplicate (2071227-DUP1)Prepared & Analyzed: 07/12/12 Source: 12G0251-01 Nitrate/Nitrite as N mg/l 0.94 3 200.500.97 0.09 Matrix Spike (2071227-MS1)Prepared & Analyzed: 07/12/12 Source: 12G0251-01 Nitrate/Nitrite as N mg/l 5.00 0.94 113 80-1200.506.60 0.09 Matrix Spike Dup (2071227-MSD1)Prepared & Analyzed: 07/12/12 Source: 12G0251-01 Nitrate/Nitrite as N mg/l 5.00 0.94 113 80-120 0.3 200.506.58 0.09 Batch 2071672 Blank (2071672-BLK1)Prepared & Analyzed: 07/16/12 Oil & Grease mg/l5ND 5 LCS (2071672-BS1)Prepared & Analyzed: 07/16/12 Oil & Grease mg/l 40.0 92 78-114537 5 LCS Dup (2071672-BSD1)Prepared & Analyzed: 07/16/12 Oil & Grease mg/l 40.0 97 78-114 6 20539 5 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 15 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0158 Carlsbad Dry Weather Notes and Definitions J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Sample results reported on a dry weight basis (if indicated in units column) Relative Percent DifferenceRPD dry Not ReportedNR Analyte NOT DETECTED at or above the reporting limit (or method detection limit when specified)ND MDL Method detection limit (indicated per client's request) The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 16 of 16 EnviroMatrix Analytical, Inc. Appendix 7.2 Appendix 7.2 Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0606 Carlsbad Dry Weather Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES Date Received 9B-38 12G0606-01 07/24/12 10:00 07/24/12 14:50Stormwater 17D-37 12G0606-02 07/24/12 11:20 07/24/12 14:50Stormwater 27D-17 12G0606-03 07/24/12 12:30 07/24/12 14:50Stormwater The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0606 Carlsbad Dry Weather Metals (Dissolved) by EPA 200 Series Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 9B-38 (12G0606-01) Stormwater Sampled: 07/24/12 10:00 Received: 07/24/12 14:50 EPA 200.807/25/12 07/25/12 mg/l 20723541CadmiumND0.0010.0002 "" """0.011 0.001 0.010Copper " """"""Lead ND 0.0050.001 "" """J0.007 0.0003 0.020Zinc " 17D-37 (12G0606-02) Stormwater Sampled: 07/24/12 11:20 Received: 07/24/12 14:50 EPA 200.807/25/12 07/25/12 mg/l 20723541LeadND0.0050.001 "" """J0.003 0.001 0.010Copper " "" """J0.019 0.0003 0.020Zinc " """"""Cadmium ND 0.0010.0002 27D-17 (12G0606-03) Stormwater Sampled: 07/24/12 12:30 Received: 07/24/12 14:50 2072354 07/25/12 07/25/12 mg/l 1 J0.004 0.001 0.010Copper EPA 200.8 "" """ J0.005 0.0003 0.020Zinc " """"""Lead ND 0.0050.001 "" """J0.0002 0.0002 0.001Cadmium " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0606 Carlsbad Dry Weather Organophosphorus Pesticides by EPA Method 8141A Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 9B-38 (12G0606-01) Stormwater Sampled: 07/24/12 10:00 Received: 07/24/12 14:50 EPA 8141A07/24/12 07/26/12 ug/l 20723291ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "76 % 60-130Surrogate: Triphenyl phosphate "" " "68 % 60-130Surrogate: Tribuytlphosphate 17D-37 (12G0606-02) Stormwater Sampled: 07/24/12 11:20 Received: 07/24/12 14:50 EPA 8141A07/24/12 07/26/12 ug/l 20723291ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "88 % 60-130Surrogate: Triphenyl phosphate "" " "72 % 60-130Surrogate: Tribuytlphosphate 27D-17 (12G0606-03) Stormwater Sampled: 07/24/12 12:30 Received: 07/24/12 14:50 EPA 8141A07/24/12 07/26/12 ug/l 20723291ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "92 % 60-130Surrogate: Triphenyl phosphate "" " "80 % 60-130Surrogate: Tribuytlphosphate The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0606 Carlsbad Dry Weather Conventional Chemistry Parameters by Standard/EPA Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 9B-38 (12G0606-01) Stormwater Sampled: 07/24/12 10:00 Received: 07/24/12 14:50 2072447 07/24/12 07/25/12 mg CaCO3/L 10414100 100Hardness (Total)EPA 200.7 EPA 1664A07/24/12 07/24/12 mg/l 20723591Oil & Grease ND 55 17D-37 (12G0606-02) Stormwater Sampled: 07/24/12 11:20 Received: 07/24/12 14:50 2072447 07/24/12 07/25/12 mg CaCO3/L 101650100 100Hardness (Total)EPA 200.7 EPA 1664A07/24/12 07/24/12 mg/l 20723591Oil & Grease ND 55 27D-17 (12G0606-03) Stormwater Sampled: 07/24/12 12:30 Received: 07/24/12 14:50 2072447 07/24/12 07/25/12 mg CaCO3/L 10950100 100Hardness (Total)EPA 200.7 EPA 1664A07/24/12 07/24/12 mg/l 20723591Oil & Grease ND 55 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0606 Carlsbad Dry Weather Microbiological Parameters by Standard Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 9B-38 (12G0606-01) Stormwater Sampled: 07/24/12 10:00 Received: 07/24/12 14:50 2072538 07/24/12 07/28/12 MPN/100 ml 10013000200 200Total Coliforms SM 9221 B, E " " 07/27/12 "1050020 20Fecal Coliforms " 2072539 " 07/28/12 " 1002300200 200Enterococcus SM 9230 A, B 17D-37 (12G0606-02) Stormwater Sampled: 07/24/12 11:20 Received: 07/24/12 14:50 2072538 07/24/12 07/28/12 MPN/100 ml 1003000200 200Total Coliforms SM 9221 B, E " " 07/27/12 "102020 20Fecal Coliforms " 2072539 " 07/28/12 ""20 20 20Enterococcus SM 9230 A, B 27D-17 (12G0606-03) Stormwater Sampled: 07/24/12 12:30 Received: 07/24/12 14:50 2072538 07/24/12 07/28/12 MPN/100 ml 1000230002000 2000Total Coliforms SM 9221 B, E " " 07/27/12 "1017020 20Fecal Coliforms " 2072539 " 07/28/12 ""130 20 20Enterococcus SM 9230 A, B The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0606 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2072354 Blank (2072354-BLK1)Prepared: 07/23/12 Analyzed: 07/25/12 Lead mg/l0.005ND 0.001 Zinc "0.020ND 0.0003 Cadmium "0.001ND 0.0002 Copper "0.010ND 0.001 LCS (2072354-BS1)Prepared: 07/23/12 Analyzed: 07/25/12 Cadmium mg/l 0.0500 94 75-1250.0010.047 0.0002 Zinc " 0.0500 99 75-1250.0200.050 0.0003 Lead " 0.0500 103 75-1250.0050.052 0.001 Copper " 0.0500 102 75-1250.0100.051 0.001 LCS Dup (2072354-BSD1)Prepared: 07/23/12 Analyzed: 07/25/12 Lead mg/l 0.0500 104 75-125 0.7 200.0050.052 0.001 Cadmium " 0.0500 92 75-125 1 200.0010.046 0.0002 Copper " 0.0500 100 75-125 2 200.0100.050 0.001 Zinc " 0.0500 97 75-125 2 200.0200.049 0.0003 Duplicate (2072354-DUP1)Prepared: 07/23/12 Analyzed: 07/25/12 Source: 12G0462-01 Zinc mg/l 0.003 2 20 J0.0200.003 0.0003 Copper "0.002 9 20 J0.0100.002 0.001 Lead "ND 200.005ND 0.001 Cadmium "ND 200.001ND 0.0002 Matrix Spike (2072354-MS1)Prepared: 07/23/12 Analyzed: 07/25/12 Source: 12G0462-01 Zinc mg/l 0.0500 0.003 92 75-1250.0200.049 0.0003 Lead " 0.0500 ND 106 75-1250.0050.053 0.001 Copper " 0.0500 0.002 92 75-1250.0100.048 0.001 Cadmium " 0.0500 ND 91 75-1250.0010.045 0.0002 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0606 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2072354 Matrix Spike Dup (2072354-MSD1)Prepared: 07/23/12 Analyzed: 07/25/12 Source: 12G0462-01 Zinc mg/l 0.0500 0.003 90 75-125 2 200.0200.048 0.0003 Lead " 0.0500 ND 112 75-125 5 200.0050.056 0.001 Copper " 0.0500 0.002 89 75-125 3 200.0100.046 0.001 Cadmium " 0.0500 ND 89 75-125 2 200.0010.044 0.0002 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0606 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organophosphorus Pesticides by EPA Method 8141A - Quality Control MDL Batch 2072329 Blank (2072329-BLK1)Prepared: 07/23/12 Analyzed: 07/24/12 Chlorpyrifos ug/l0.05ND 0.04 Diazinon "0.05ND 0.04 " 0.250 60-130Surrogate: Triphenyl phosphate 600.150 " 0.250 60-130Surrogate: Tribuytlphosphate 720.180 LCS (2072329-BS1)Prepared: 07/23/12 Analyzed: 07/24/12 Bolstar ug/l 0.500 104 60-1300.100.52 0.09 Diazinon " 0.500 80 60-1300.050.40 0.04 Ethoprop " 0.500 94 60-1300.050.47 0.05 Mevinphos " 0.500 94 60-1300.250.47 0.21 Methyl parathion " 0.500 82 60-1300.100.41 0.07 Phorate " 0.500 84 60-1300.050.42 0.03 Ronnel " 0.500 84 60-1300.250.42 0.16 Trichlorinate " 0.500 82 60-1300.050.41 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 600.150 " 0.250 60-130Surrogate: Tribuytlphosphate 760.190 LCS Dup (2072329-BSD1)Prepared: 07/23/12 Analyzed: 07/24/12 Bolstar ug/l 0.500 94 60-130 10 300.100.47 0.09 Diazinon " 0.500 78 60-130 3 300.050.39 0.04 Ethoprop " 0.500 78 60-130 19 300.050.39 0.05 Mevinphos " 0.500 84 60-130 11 300.250.42 0.21 Methyl parathion " 0.500 78 60-130 5 300.100.39 0.07 Phorate " 0.500 80 60-130 5 300.050.40 0.03 Ronnel " 0.500 86 60-130 2 300.250.43 0.16 Trichlorinate " 0.500 78 60-130 5 300.050.39 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 640.160 " 0.250 60-130Surrogate: Tribuytlphosphate 760.190 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0606 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2072359 Blank (2072359-BLK1)Prepared & Analyzed: 07/23/12 Oil & Grease mg/l5ND 5 LCS (2072359-BS1)Prepared & Analyzed: 07/23/12 Oil & Grease mg/l 40.0 94 78-114538 5 LCS Dup (2072359-BSD1)Prepared & Analyzed: 07/23/12 Oil & Grease mg/l 40.0 92 78-114 3 20537 5 Batch 2072447 Blank (2072447-BLK1)Prepared: 07/24/12 Analyzed: 07/25/12 Hardness (Total)mg CaCO3/L10ND 10 Duplicate (2072447-DUP1)Prepared: 07/24/12 Analyzed: 07/25/12 Source: 12G0488-01 Hardness (Total)mg CaCO3/L 530 0.8 20100526 100 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0606 Carlsbad Dry Weather Notes and Definitions J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Sample results reported on a dry weight basis (if indicated in units column) Relative Percent DifferenceRPD dry Not ReportedNR Analyte NOT DETECTED at or above the reporting limit (or method detection limit when specified)ND MDL Method detection limit (indicated per client's request) The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 11 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Appendix 7.2 Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0645 Carlsbad Dry Weather Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES Date Received 55A-62 12G0645-01 07/25/12 10:00 07/25/12 14:20Stormwater 45G-13 12G0645-02 07/25/12 11:00 07/25/12 14:20Stormwater 42C-92 12G0645-03 07/25/12 11:50 07/25/12 14:20Stormwater The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0645 Carlsbad Dry Weather Metals (Dissolved) by EPA 200 Series Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 55A-62 (12G0645-01) Stormwater Sampled: 07/25/12 10:00 Received: 07/25/12 14:20 2073143 07/31/12 07/31/12 mg/l 1 J0.0002 0.0002 0.001Cadmium EPA 200.8 "" """0.010 0.001 0.010Copper " "" """J0.001 0.001 0.005Lead " "" """J0.005 0.0003 0.020Zinc " 45G-13 (12G0645-02) Stormwater Sampled: 07/25/12 11:00 Received: 07/25/12 14:20 EPA 200.807/31/12 07/31/12 mg/l 20731431LeadND0.0050.001 "" """ J0.007 0.001 0.010Copper " "" """ J0.006 0.0003 0.020Zinc " "" """ J0.0002 0.0002 0.001Cadmium " 42C-92 (12G0645-03) Stormwater Sampled: 07/25/12 11:50 Received: 07/25/12 14:20 2073143 07/31/12 07/31/12 mg/l 1 J0.009 0.001 0.010Copper EPA 200.8 "" """ J0.008 0.0003 0.020Zinc " """"""Lead ND 0.0050.001 "" """J0.0002 0.0002 0.001Cadmium " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0645 Carlsbad Dry Weather Organophosphorus Pesticides by EPA Method 8141A Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 55A-62 (12G0645-01) Stormwater Sampled: 07/25/12 10:00 Received: 07/25/12 14:20 EPA 8141A07/27/12 07/31/12 ug/l 20728181ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "96 % 60-130Surrogate: Triphenyl phosphate "" " "88 % 60-130Surrogate: Tribuytlphosphate 45G-13 (12G0645-02) Stormwater Sampled: 07/25/12 11:00 Received: 07/25/12 14:20 EPA 8141A07/27/12 07/31/12 ug/l 20728181ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "92 % 60-130Surrogate: Triphenyl phosphate "" " "88 % 60-130Surrogate: Tribuytlphosphate 42C-92 (12G0645-03) Stormwater Sampled: 07/25/12 11:50 Received: 07/25/12 14:20 EPA 8141A07/27/12 07/31/12 ug/l 20728181ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "128 % 60-130Surrogate: Triphenyl phosphate "" " "104 % 60-130Surrogate: Tribuytlphosphate The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0645 Carlsbad Dry Weather Conventional Chemistry Parameters by Standard/EPA Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 55A-62 (12G0645-01) Stormwater Sampled: 07/25/12 10:00 Received: 07/25/12 14:20 2073055 07/30/12 08/01/12 mg CaCO3/L 102240100 100Hardness (Total)EPA 200.7 EPA 1664A08/02/12 08/02/12 mg/l 20802451Oil & Grease ND 55 45G-13 (12G0645-02) Stormwater Sampled: 07/25/12 11:00 Received: 07/25/12 14:20 2073055 07/30/12 08/01/12 mg CaCO3/L 101020100 100Hardness (Total)EPA 200.7 EPA 1664A08/02/12 08/02/12 mg/l 20802451Oil & Grease ND 55 42C-92 (12G0645-03) Stormwater Sampled: 07/25/12 11:50 Received: 07/25/12 14:20 2073055 07/30/12 08/01/12 mg CaCO3/L 10733100 100Hardness (Total)EPA 200.7 EPA 1664A08/02/12 08/02/12 mg/l 20802451Oil & Grease ND 55 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0645 Carlsbad Dry Weather Microbiological Parameters by Standard Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 55A-62 (12G0645-01) Stormwater Sampled: 07/25/12 10:00 Received: 07/25/12 14:20 2072630 07/25/12 07/29/12 MPN/100 ml 1000230002000 2000Total Coliforms SM 9221 B, E " " 07/28/12 " 1005000200 200Fecal Coliforms " 2072631 07/25/12 07/29/12 "1023020 20Enterococcus SM 9230 A, B 45G-13 (12G0645-02) Stormwater Sampled: 07/25/12 11:00 Received: 07/25/12 14:20 2072630 07/25/12 07/29/12 MPN/100 ml 1000300002000 2000Total Coliforms SM 9221 B, E " " 07/28/12 " 10013000200 200Fecal Coliforms " 2072631 07/25/12 07/29/12 "10280020 20Enterococcus SM 9230 A, B 42C-92 (12G0645-03) Stormwater Sampled: 07/25/12 11:50 Received: 07/25/12 14:20 2072630 07/25/12 07/29/12 MPN/100 ml 10013000200 200Total Coliforms SM 9221 B, E " " 07/28/12 "10130020 20Fecal Coliforms " 2072631 07/25/12 07/29/12 " 1002300200 200Enterococcus SM 9230 A, B The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0645 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2073143 Blank (2073143-BLK1)Prepared & Analyzed: 07/31/12 Zinc mg/l0.020ND 0.0003 Lead "0.005ND 0.001 Cadmium "0.001ND 0.0002 Copper "0.010ND 0.001 LCS (2073143-BS1)Prepared & Analyzed: 07/31/12 Zinc mg/l 0.0500 100 75-1250.0200.050 0.0003 Lead " 0.0500 104 75-1250.0050.052 0.001 Copper " 0.0500 99 75-1250.0100.050 0.001 Cadmium " 0.0500 101 75-1250.0010.051 0.0002 Duplicate (2073143-DUP1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Copper mg/l 0.010 11 200.0100.011 0.001 Lead "ND 20J0.0050.001 0.001 Zinc " 0.005 7 20 J0.0200.005 0.0003 Cadmium "0.0002 14 20 J0.0010.0002 0.0002 Matrix Spike (2073143-MS1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Lead mg/l 0.0500 ND 113 75-1250.0050.056 0.001 Zinc " 0.0500 0.005 82 75-1250.0200.046 0.0003 Cadmium " 0.0500 0.0002 92 75-1250.0010.046 0.0002 Copper " 0.0500 0.010 95 75-1250.0100.058 0.001 Matrix Spike Dup (2073143-MSD1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Cadmium mg/l 0.0500 0.0002 94 75-125 3 200.0010.047 0.0002 Zinc " 0.0500 0.005 85 75-125 3 200.0200.047 0.0003 Copper " 0.0500 0.010 99 75-125 3 200.0100.060 0.001 Lead " 0.0500 ND 114 75-125 0.7 200.0050.057 0.001 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0645 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organophosphorus Pesticides by EPA Method 8141A - Quality Control MDL Batch 2072818 Blank (2072818-BLK1)Prepared: 07/27/12 Analyzed: 07/31/12 Chlorpyrifos ug/l0.05ND 0.04 Diazinon "0.05ND 0.04 " 0.250 60-130Surrogate: Triphenyl phosphate 760.190 " 0.250 60-130Surrogate: Tribuytlphosphate 800.200 LCS (2072818-BS1)Prepared: 07/27/12 Analyzed: 07/31/12 Bolstar ug/l 0.500 84 60-1300.100.42 0.09 Diazinon " 0.500 84 60-1300.050.42 0.04 Ethoprop " 0.500 82 60-1300.050.41 0.05 Mevinphos " 0.500 78 60-1300.250.39 0.21 Methyl parathion " 0.500 90 60-1300.100.45 0.07 Phorate " 0.500 82 60-1300.050.41 0.03 Ronnel " 0.500 80 60-1300.250.40 0.16 Trichlorinate " 0.500 82 60-1300.050.41 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 920.230 " 0.250 60-130Surrogate: Tribuytlphosphate 1000.250 LCS Dup (2072818-BSD1)Prepared: 07/27/12 Analyzed: 07/31/12 Bolstar ug/l 0.500 82 60-130 2 300.100.41 0.09 Diazinon " 0.500 84 60-130 0 300.050.42 0.04 Ethoprop " 0.500 78 60-130 5 300.050.39 0.05 Mevinphos " 0.500 80 60-130 3 300.250.40 0.21 Methyl parathion " 0.500 82 60-130 9 300.100.41 0.07 Phorate " 0.500 80 60-130 2 300.050.40 0.03 Ronnel " 0.500 80 60-130 0 300.250.40 0.16 Trichlorinate " 0.500 80 60-130 2 300.050.40 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 800.200 " 0.250 60-130Surrogate: Tribuytlphosphate 1000.250 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0645 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2073055 Blank (2073055-BLK1)Prepared: 07/30/12 Analyzed: 08/01/12 Hardness (Total)mg CaCO3/L10ND 10 Duplicate (2073055-DUP1)Prepared: 07/30/12 Analyzed: 08/01/12 Source: 12G0645-01 Hardness (Total)mg CaCO3/L 2240 0.4 201002230 100 Batch 2080245 Blank (2080245-BLK1)Prepared & Analyzed: 08/02/12 Oil & Grease mg/l5ND 5 LCS (2080245-BS1)Prepared & Analyzed: 08/02/12 Oil & Grease mg/l 40.0 94 78-114538 5 LCS Dup (2080245-BSD1)Prepared & Analyzed: 08/02/12 Oil & Grease mg/l 40.0 94 78-114 0.3 20538 5 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0645 Carlsbad Dry Weather Notes and Definitions J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Sample results reported on a dry weight basis (if indicated in units column) Relative Percent DifferenceRPD dry Not ReportedNR Analyte NOT DETECTED at or above the reporting limit (or method detection limit when specified)ND MDL Method detection limit (indicated per client's request) The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Appendix 7.2 Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0706 Carlsbad Dry Weather Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES Date Received 35C-51A 12G0706-01 07/27/12 09:40 07/27/12 15:00Stormwater 35C-11 12G0706-02 07/27/12 11:20 07/27/12 15:00Stormwater The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0706 Carlsbad Dry Weather Metals (Dissolved) by EPA 200 Series Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 35C-51A (12G0706-01) Stormwater Sampled: 07/27/12 09:40 Received: 07/27/12 15:00 2073143 07/31/12 07/31/12 mg/l 1 J0.003 0.0003 0.020Zinc EPA 200.8 """"""Cadmium ND 0.0010.0002 "" """ J0.005 0.001 0.010Copper " """"""Lead ND 0.0050.001 35C-11 (12G0706-02) Stormwater Sampled: 07/27/12 11:20 Received: 07/27/12 15:00 2073143 07/31/12 07/31/12 mg/l 1 J0.004 0.0003 0.020Zinc EPA 200.8 """"""Lead ND 0.0050.001 "" """J0.003 0.001 0.010Copper " """"""Cadmium ND 0.0010.0002 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0706 Carlsbad Dry Weather Organophosphorus Pesticides by EPA Method 8141A Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 35C-51A (12G0706-01) Stormwater Sampled: 07/27/12 09:40 Received: 07/27/12 15:00 EPA 8141A07/27/12 08/01/12 ug/l 20728181ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "88 % 60-130Surrogate: Triphenyl phosphate "" " "92 % 60-130Surrogate: Tribuytlphosphate 35C-11 (12G0706-02) Stormwater Sampled: 07/27/12 11:20 Received: 07/27/12 15:00 EPA 8141A07/27/12 08/01/12 ug/l 20728181ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "72 % 60-130Surrogate: Triphenyl phosphate "" " "72 % 60-130Surrogate: Tribuytlphosphate The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0706 Carlsbad Dry Weather Conventional Chemistry Parameters by Standard/EPA Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 35C-51A (12G0706-01) Stormwater Sampled: 07/27/12 09:40 Received: 07/27/12 15:00 2073055 07/30/12 08/01/12 mg CaCO3/L 10959100 100Hardness (Total)EPA 200.7 EPA 1664A08/02/12 08/03/12 mg/l 20802451Oil & Grease ND 55 35C-11 (12G0706-02) Stormwater Sampled: 07/27/12 11:20 Received: 07/27/12 15:00 2073055 07/30/12 08/01/12 mg CaCO3/L 10312100 100Hardness (Total)EPA 200.7 EPA 1664A08/02/12 08/03/12 mg/l 20802451Oil & Grease ND 55 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0706 Carlsbad Dry Weather Microbiological Parameters by Standard Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 35C-51A (12G0706-01) Stormwater Sampled: 07/27/12 09:40 Received: 07/27/12 15:00 2073039 07/27/12 07/31/12 MPN/100 ml 10013000200 200Total Coliforms SM 9221 B, E " " 07/30/12 ""5000 200 200Fecal Coliforms " SM 9230 A, B" 07/30/12 " 207304010EnterococcusND200200 35C-11 (12G0706-02) Stormwater Sampled: 07/27/12 11:20 Received: 07/27/12 15:00 2073039 07/27/12 07/31/12 MPN/100 ml 1000230002000 2000Total Coliforms SM 9221 B, E " " 07/30/12 "1017020 20Fecal Coliforms " 2073040 " 07/31/12 ""1700 20 20Enterococcus SM 9230 A, B The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0706 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2073143 Blank (2073143-BLK1)Prepared & Analyzed: 07/31/12 Cadmium mg/l0.001ND 0.0002 Copper "0.010ND 0.001 Lead "0.005ND 0.001 Zinc "0.020ND 0.0003 LCS (2073143-BS1)Prepared & Analyzed: 07/31/12 Zinc mg/l 0.0500 100 75-1250.0200.050 0.0003 Lead " 0.0500 104 75-1250.0050.052 0.001 Cadmium " 0.0500 101 75-1250.0010.051 0.0002 Copper " 0.0500 99 75-1250.0100.050 0.001 Duplicate (2073143-DUP1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Lead mg/l ND 20 J0.0050.001 0.001 Zinc " 0.005 7 20 J0.0200.005 0.0003 Cadmium "0.0002 14 20 J0.0010.0002 0.0002 Copper "0.010 11 200.0100.011 0.001 Matrix Spike (2073143-MS1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Lead mg/l 0.0500 ND 113 75-1250.0050.056 0.001 Zinc " 0.0500 0.005 82 75-1250.0200.046 0.0003 Copper " 0.0500 0.010 95 75-1250.0100.058 0.001 Cadmium " 0.0500 0.0002 92 75-1250.0010.046 0.0002 Matrix Spike Dup (2073143-MSD1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Zinc mg/l 0.0500 0.005 85 75-125 3 200.0200.047 0.0003 Lead " 0.0500 ND 114 75-125 0.7 200.0050.057 0.001 Copper " 0.0500 0.010 99 75-125 3 200.0100.060 0.001 Cadmium " 0.0500 0.0002 94 75-125 3 200.0010.047 0.0002 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0706 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organophosphorus Pesticides by EPA Method 8141A - Quality Control MDL Batch 2072818 Blank (2072818-BLK1)Prepared: 07/27/12 Analyzed: 07/31/12 Chlorpyrifos ug/l0.05ND 0.04 Diazinon "0.05ND 0.04 " 0.250 60-130Surrogate: Triphenyl phosphate 760.190 " 0.250 60-130Surrogate: Tribuytlphosphate 800.200 LCS (2072818-BS1)Prepared: 07/27/12 Analyzed: 07/31/12 Bolstar ug/l 0.500 84 60-1300.100.42 0.09 Diazinon " 0.500 84 60-1300.050.42 0.04 Ethoprop " 0.500 82 60-1300.050.41 0.05 Mevinphos " 0.500 78 60-1300.250.39 0.21 Methyl parathion " 0.500 90 60-1300.100.45 0.07 Phorate " 0.500 82 60-1300.050.41 0.03 Ronnel " 0.500 80 60-1300.250.40 0.16 Trichlorinate " 0.500 82 60-1300.050.41 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 920.230 " 0.250 60-130Surrogate: Tribuytlphosphate 1000.250 LCS Dup (2072818-BSD1)Prepared: 07/27/12 Analyzed: 07/31/12 Bolstar ug/l 0.500 82 60-130 2 300.100.41 0.09 Diazinon " 0.500 84 60-130 0 300.050.42 0.04 Ethoprop " 0.500 78 60-130 5 300.050.39 0.05 Mevinphos " 0.500 80 60-130 3 300.250.40 0.21 Methyl parathion " 0.500 82 60-130 9 300.100.41 0.07 Phorate " 0.500 80 60-130 2 300.050.40 0.03 Ronnel " 0.500 80 60-130 0 300.250.40 0.16 Trichlorinate " 0.500 80 60-130 2 300.050.40 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 800.200 " 0.250 60-130Surrogate: Tribuytlphosphate 1000.250 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0706 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2073055 Blank (2073055-BLK1)Prepared: 07/30/12 Analyzed: 08/01/12 Hardness (Total)mg CaCO3/L10ND 10 Duplicate (2073055-DUP1)Prepared: 07/30/12 Analyzed: 08/01/12 Source: 12G0645-01 Hardness (Total)mg CaCO3/L 2240 0.4 201002230 100 Batch 2080245 Blank (2080245-BLK1)Prepared & Analyzed: 08/02/12 Oil & Grease mg/l5ND 5 LCS (2080245-BS1)Prepared & Analyzed: 08/02/12 Oil & Grease mg/l 40.0 94 78-114538 5 LCS Dup (2080245-BSD1)Prepared & Analyzed: 08/02/12 Oil & Grease mg/l 40.0 94 78-114 0.3 20538 5 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0706 Carlsbad Dry Weather Notes and Definitions J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Sample results reported on a dry weight basis (if indicated in units column) Relative Percent DifferenceRPD dry Not ReportedNR Analyte NOT DETECTED at or above the reporting limit (or method detection limit when specified)ND MDL Method detection limit (indicated per client's request) The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Appendix 7.2 Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0746 Carlsbad Dry Weather Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES Date Received 48D-24 12G0746-01 07/30/12 10:20 07/30/12 12:45Stormwater The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0746 Carlsbad Dry Weather Metals (Dissolved) by EPA 200 Series Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 48D-24 (12G0746-01) Stormwater Sampled: 07/30/12 10:20 Received: 07/30/12 12:45 2073143 07/31/12 07/31/12 mg/l 5 J0.045 0.002 0.100Zinc EPA 200.8 """"""Lead ND 0.0250.005 "" """ J0.015 0.005 0.050Copper " "" """0.012 0.001 0.005Cadmium " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0746 Carlsbad Dry Weather Organophosphorus Pesticides by EPA Method 8141A Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 48D-24 (12G0746-01) Stormwater Sampled: 07/30/12 10:20 Received: 07/30/12 12:45 EPA 8141A08/04/12 08/06/12 ug/l 20806311ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "68 % 60-130Surrogate: Triphenyl phosphate "" " "76 % 60-130Surrogate: Tribuytlphosphate The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0746 Carlsbad Dry Weather Conventional Chemistry Parameters by Standard/EPA Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 48D-24 (12G0746-01) Stormwater Sampled: 07/30/12 10:20 Received: 07/30/12 12:45 2073055 07/30/12 08/01/12 mg CaCO3/L 103790100 100Hardness (Total)EPA 200.7 EPA 1664A08/08/12 08/08/12 mg/l 20808311Oil & Grease ND 55 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0746 Carlsbad Dry Weather Microbiological Parameters by Standard Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 48D-24 (12G0746-01) Stormwater Sampled: 07/30/12 10:20 Received: 07/30/12 12:45 2073131 07/30/12 08/03/12 MPN/100 ml 1000230002000 2000Total Coliforms SM 9221 B, E " " 08/02/12 "10140020 20Fecal Coliforms " 2073132 07/30/12 08/03/12 "186020 20Enterococcus SM 9230 A, B The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0746 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2073143 Blank (2073143-BLK1)Prepared & Analyzed: 07/31/12 Cadmium mg/l0.001ND 0.0002 Copper "0.010ND 0.001 Lead "0.005ND 0.001 Zinc "0.020ND 0.0003 LCS (2073143-BS1)Prepared & Analyzed: 07/31/12 Cadmium mg/l 0.0500 101 75-1250.0010.051 0.0002 Copper " 0.0500 99 75-1250.0100.050 0.001 Lead " 0.0500 104 75-1250.0050.052 0.001 Zinc " 0.0500 100 75-1250.0200.050 0.0003 Duplicate (2073143-DUP1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Copper mg/l 0.010 11 200.0100.011 0.001 Lead "ND 20J0.0050.001 0.001 Cadmium "0.0002 14 20 J0.0010.0002 0.0002 Zinc " 0.005 7 20 J0.0200.005 0.0003 Matrix Spike (2073143-MS1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Cadmium mg/l 0.0500 0.0002 92 75-1250.0010.046 0.0002 Copper " 0.0500 0.010 95 75-1250.0100.058 0.001 Lead " 0.0500 ND 113 75-1250.0050.056 0.001 Zinc " 0.0500 0.005 82 75-1250.0200.046 0.0003 Matrix Spike Dup (2073143-MSD1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Cadmium mg/l 0.0500 0.0002 94 75-125 3 200.0010.047 0.0002 Copper " 0.0500 0.010 99 75-125 3 200.0100.060 0.001 Lead " 0.0500 ND 114 75-125 0.7 200.0050.057 0.001 Zinc " 0.0500 0.005 85 75-125 3 200.0200.047 0.0003 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0746 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organophosphorus Pesticides by EPA Method 8141A - Quality Control MDL Batch 2080631 Blank (2080631-BLK1)Prepared: 08/04/12 Analyzed: 08/06/12 Chlorpyrifos ug/l0.05ND 0.04 Diazinon "0.05ND 0.04 " 0.250 60-130Surrogate: Triphenyl phosphate 760.190 " 0.250 60-130Surrogate: Tribuytlphosphate 600.150 LCS (2080631-BS1)Prepared: 08/04/12 Analyzed: 08/06/12 Bolstar ug/l 0.500 76 60-1300.100.38 0.09 Diazinon " 0.500 78 60-1300.050.39 0.04 Ethoprop " 0.500 86 60-1300.050.43 0.05 Mevinphos " 0.500 106 60-1300.250.53 0.21 Methyl parathion " 0.500 88 60-1300.100.44 0.07 Phorate " 0.500 90 60-1300.050.45 0.03 Ronnel " 0.500 78 60-1300.250.39 0.16 Trichlorinate " 0.500 98 60-1300.050.49 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 720.180 " 0.250 60-130Surrogate: Tribuytlphosphate 760.190 LCS Dup (2080631-BSD1)Prepared: 08/04/12 Analyzed: 08/06/12 Bolstar ug/l 0.500 90 60-130 17 300.100.45 0.09 Diazinon " 0.500 88 60-130 12 300.050.44 0.04 Ethoprop " 0.500 90 60-130 5 300.050.45 0.05 Mevinphos " 0.500 90 60-130 16 300.250.45 0.21 Methyl parathion " 0.500 84 60-130 5 300.100.42 0.07 Phorate " 0.500 86 60-130 5 300.050.43 0.03 Ronnel " 0.500 76 60-130 3 300.250.38 0.16 Trichlorinate " 0.500 90 60-130 9 300.050.45 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 640.160 " 0.250 60-130Surrogate: Tribuytlphosphate 640.160 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0746 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2073055 Blank (2073055-BLK1)Prepared: 07/30/12 Analyzed: 08/01/12 Hardness (Total)mg CaCO3/L10ND 10 Duplicate (2073055-DUP1)Prepared: 07/30/12 Analyzed: 08/01/12 Source: 12G0645-01 Hardness (Total)mg CaCO3/L 2240 0.4 201002230 100 Batch 2080831 Blank (2080831-BLK1)Prepared & Analyzed: 08/08/12 Oil & Grease mg/l5ND 5 LCS (2080831-BS1)Prepared & Analyzed: 08/08/12 Oil & Grease mg/l 40.0 92 78-114537 5 LCS Dup (2080831-BSD1)Prepared & Analyzed: 08/08/12 Oil & Grease mg/l 40.0 90 78-114 2 20536 5 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0746 Carlsbad Dry Weather Notes and Definitions J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Sample results reported on a dry weight basis (if indicated in units column) Relative Percent DifferenceRPD dry Not ReportedNR Analyte NOT DETECTED at or above the reporting limit (or method detection limit when specified)ND MDL Method detection limit (indicated per client's request) The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Appendix 7.2 Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0766 Carlsbad Dry Weather Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES Date Received 37A-70 12G0766-01 07/30/12 14:45 07/30/12 17:17Stormwater The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0766 Carlsbad Dry Weather Metals (Dissolved) by EPA 200 Series Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 37A-70 (12G0766-01) Stormwater Sampled: 07/30/12 14:45 Received: 07/30/12 17:17 2073143 07/31/12 07/31/12 mg/l 1 J0.003 0.0003 0.020Zinc EPA 200.8 "" """J0.001 0.001 0.005Lead " "" """0.010 0.001 0.010Copper " "" """J0.0002 0.0002 0.001Cadmium " The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0766 Carlsbad Dry Weather Organophosphorus Pesticides by EPA Method 8141A Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 37A-70 (12G0766-01) Stormwater Sampled: 07/30/12 14:45 Received: 07/30/12 17:17 EPA 8141A08/04/12 08/06/12 ug/l 20806311ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "68 % 60-130Surrogate: Triphenyl phosphate "" " "68 % 60-130Surrogate: Tribuytlphosphate The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0766 Carlsbad Dry Weather Conventional Chemistry Parameters by Standard/EPA Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 37A-70 (12G0766-01) Stormwater Sampled: 07/30/12 14:45 Received: 07/30/12 17:17 2073055 07/30/12 08/01/12 mg CaCO3/L 103240100 100Hardness (Total)EPA 200.7 EPA 1664A08/08/12 08/08/12 mg/l 20808311Oil & Grease ND 55 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0766 Carlsbad Dry Weather Microbiological Parameters by Standard Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 37A-70 (12G0766-01) Stormwater Sampled: 07/30/12 14:45 Received: 07/30/12 17:17 2073141 07/30/12 08/03/12 MPN/100 ml 1008000200 200Total Coliforms SM 9221 B, E " " 08/02/12 "1011020 20Fecal Coliforms " 2073142 " 08/03/12 ""230 20 20Enterococcus SM 9230 A, B The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0766 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2073143 Blank (2073143-BLK1)Prepared & Analyzed: 07/31/12 Cadmium mg/l0.001ND 0.0002 Copper "0.010ND 0.001 Lead "0.005ND 0.001 Zinc "0.020ND 0.0003 LCS (2073143-BS1)Prepared & Analyzed: 07/31/12 Cadmium mg/l 0.0500 101 75-1250.0010.051 0.0002 Copper " 0.0500 99 75-1250.0100.050 0.001 Lead " 0.0500 104 75-1250.0050.052 0.001 Zinc " 0.0500 100 75-1250.0200.050 0.0003 Duplicate (2073143-DUP1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Copper mg/l 0.010 11 200.0100.011 0.001 Lead "ND 20J0.0050.001 0.001 Cadmium "0.0002 14 20 J0.0010.0002 0.0002 Zinc " 0.005 7 20 J0.0200.005 0.0003 Matrix Spike (2073143-MS1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Cadmium mg/l 0.0500 0.0002 92 75-1250.0010.046 0.0002 Copper " 0.0500 0.010 95 75-1250.0100.058 0.001 Lead " 0.0500 ND 113 75-1250.0050.056 0.001 Zinc " 0.0500 0.005 82 75-1250.0200.046 0.0003 Matrix Spike Dup (2073143-MSD1)Prepared & Analyzed: 07/31/12 Source: 12G0645-01 Cadmium mg/l 0.0500 0.0002 94 75-125 3 200.0010.047 0.0002 Copper " 0.0500 0.010 99 75-125 3 200.0100.060 0.001 Lead " 0.0500 ND 114 75-125 0.7 200.0050.057 0.001 Zinc " 0.0500 0.005 85 75-125 3 200.0200.047 0.0003 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0766 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organophosphorus Pesticides by EPA Method 8141A - Quality Control MDL Batch 2080631 Blank (2080631-BLK1)Prepared: 08/04/12 Analyzed: 08/06/12 Chlorpyrifos ug/l0.05ND 0.04 Diazinon "0.05ND 0.04 " 0.250 60-130Surrogate: Triphenyl phosphate 760.190 " 0.250 60-130Surrogate: Tribuytlphosphate 600.150 LCS (2080631-BS1)Prepared: 08/04/12 Analyzed: 08/06/12 Bolstar ug/l 0.500 76 60-1300.100.38 0.09 Diazinon " 0.500 78 60-1300.050.39 0.04 Ethoprop " 0.500 86 60-1300.050.43 0.05 Mevinphos " 0.500 106 60-1300.250.53 0.21 Methyl parathion " 0.500 88 60-1300.100.44 0.07 Phorate " 0.500 90 60-1300.050.45 0.03 Ronnel " 0.500 78 60-1300.250.39 0.16 Trichlorinate " 0.500 98 60-1300.050.49 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 720.180 " 0.250 60-130Surrogate: Tribuytlphosphate 760.190 LCS Dup (2080631-BSD1)Prepared: 08/04/12 Analyzed: 08/06/12 Bolstar ug/l 0.500 90 60-130 17 300.100.45 0.09 Diazinon " 0.500 88 60-130 12 300.050.44 0.04 Ethoprop " 0.500 90 60-130 5 300.050.45 0.05 Mevinphos " 0.500 90 60-130 16 300.250.45 0.21 Methyl parathion " 0.500 84 60-130 5 300.100.42 0.07 Phorate " 0.500 86 60-130 5 300.050.43 0.03 Ronnel " 0.500 76 60-130 3 300.250.38 0.16 Trichlorinate " 0.500 90 60-130 9 300.050.45 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 640.160 " 0.250 60-130Surrogate: Tribuytlphosphate 640.160 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0766 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2073055 Blank (2073055-BLK1)Prepared: 07/30/12 Analyzed: 08/01/12 Hardness (Total)mg CaCO3/L10ND 10 Duplicate (2073055-DUP1)Prepared: 07/30/12 Analyzed: 08/01/12 Source: 12G0645-01 Hardness (Total)mg CaCO3/L 2240 0.4 201002230 100 Batch 2080831 Blank (2080831-BLK1)Prepared & Analyzed: 08/08/12 Oil & Grease mg/l5ND 5 LCS (2080831-BS1)Prepared & Analyzed: 08/08/12 Oil & Grease mg/l 40.0 92 78-114537 5 LCS Dup (2080831-BSD1)Prepared & Analyzed: 08/08/12 Oil & Grease mg/l 40.0 90 78-114 2 20536 5 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0766 Carlsbad Dry Weather Notes and Definitions J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Sample results reported on a dry weight basis (if indicated in units column) Relative Percent DifferenceRPD dry Not ReportedNR Analyte NOT DETECTED at or above the reporting limit (or method detection limit when specified)ND MDL Method detection limit (indicated per client's request) The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 10 EnviroMatrix Analytical, Inc. Appendix 7.2 Appendix 7.2 Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0800 Carlsbad Dry Weather Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES Date Received 29B-44 12G0800-01 07/31/12 14:15 07/31/12 17:00Stormwater The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0800 Carlsbad Dry Weather Metals (Dissolved) by EPA 200 Series Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 29B-44 (12G0800-01) Stormwater Sampled: 07/31/12 14:15 Received: 07/31/12 17:00 2080646 08/06/12 08/07/12 mg/l 1 J0.017 0.0003 0.020Zinc EPA 200.8 """"""Lead ND 0.0050.001 "" """ J0.007 0.001 0.010Copper " """"""Cadmium ND 0.0010.0002 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0800 Carlsbad Dry Weather Organophosphorus Pesticides by EPA Method 8141A Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 29B-44 (12G0800-01) Stormwater Sampled: 07/31/12 14:15 Received: 07/31/12 17:00 EPA 8141A08/04/12 08/06/12 ug/l 20806311ChlorpyrifosND0.050.04 """"""Diazinon ND 0.050.04 "" " "80 % 60-130Surrogate: Triphenyl phosphate "" " "104 % 60-130Surrogate: Tribuytlphosphate The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0800 Carlsbad Dry Weather Conventional Chemistry Parameters by Standard/EPA Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 29B-44 (12G0800-01) Stormwater Sampled: 07/31/12 14:15 Received: 07/31/12 17:00 2073157 07/31/12 08/01/12 mg CaCO3/L 101120100 100Hardness (Total)EPA 200.7 EPA 1664A08/08/12 08/08/12 mg/l 20808311Oil & Grease ND 55 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0800 Carlsbad Dry Weather Microbiological Parameters by Standard Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 29B-44 (12G0800-01) Stormwater Sampled: 07/31/12 14:15 Received: 07/31/12 17:00 2080146 07/31/12 08/04/12 MPN/100 ml 1005000200 200Total Coliforms SM 9221 B, E " " 08/03/12 "108020 20Fecal Coliforms " 2080147 07/31/12 08/04/12 "1722Enterococcus SM 9230 A, B The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 6 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0800 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2080646 Blank (2080646-BLK1)Prepared: 08/06/12 Analyzed: 08/07/12 Cadmium mg/l0.001ND 0.0002 Copper "0.010ND 0.001 Lead "0.005ND 0.001 Zinc "0.020ND 0.0003 LCS (2080646-BS1)Prepared: 08/06/12 Analyzed: 08/07/12 Lead mg/l 0.0500 100 75-1250.0050.050 0.001 Zinc " 0.0500 96 75-1250.0200.048 0.0003 Copper " 0.0500 96 75-1250.0100.048 0.001 Cadmium " 0.0500 94 75-1250.0010.047 0.0002 LCS Dup (2080646-BSD1)Prepared: 08/06/12 Analyzed: 08/07/12 Cadmium mg/l 0.0500 95 75-125 2 200.0010.048 0.0002 Zinc " 0.0500 100 75-125 3 200.0200.050 0.0003 Lead " 0.0500 105 75-125 5 200.0050.052 0.001 Copper " 0.0500 99 75-125 3 200.0100.049 0.001 Duplicate (2080646-DUP1)Prepared: 08/06/12 Analyzed: 08/07/12 Source: 12G0783-01 Copper mg/l 0.005 10 20 J0.0100.005 0.001 Lead " 0.001 20 J0.0050.001 0.001 Cadmium "ND 20 J0.0010.0002 0.0002 Zinc " 0.003 2 20 J0.0200.003 0.0003 Matrix Spike (2080646-MS1)Prepared: 08/06/12 Analyzed: 08/07/12 Source: 12G0783-01 Copper mg/l 0.0500 0.005 91 75-1250.0100.050 0.001 Cadmium " 0.0500 ND 94 75-1250.0010.047 0.0002 Zinc " 0.0500 0.003 88 75-1250.0200.047 0.0003 Lead " 0.0500 0.001 113 75-1250.0050.058 0.001 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 7 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0800 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Metals (Dissolved) by EPA 200 Series Methods - Quality Control MDL Batch 2080646 Matrix Spike Dup (2080646-MSD1)Prepared: 08/06/12 Analyzed: 08/07/12 Source: 12G0783-01 Cadmium mg/l 0.0500 ND 91 75-125 3 200.0010.045 0.0002 Zinc " 0.0500 0.003 85 75-125 3 200.0200.046 0.0003 Copper " 0.0500 0.005 87 75-125 3 200.0100.048 0.001 Lead " 0.0500 0.001 114 75-125 1 200.0050.058 0.001 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 8 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0800 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Organophosphorus Pesticides by EPA Method 8141A - Quality Control MDL Batch 2080631 Blank (2080631-BLK1)Prepared: 08/04/12 Analyzed: 08/06/12 Chlorpyrifos ug/l0.05ND 0.04 Diazinon "0.05ND 0.04 " 0.250 60-130Surrogate: Triphenyl phosphate 760.190 " 0.250 60-130Surrogate: Tribuytlphosphate 600.150 LCS (2080631-BS1)Prepared: 08/04/12 Analyzed: 08/06/12 Bolstar ug/l 0.500 76 60-1300.100.38 0.09 Diazinon " 0.500 78 60-1300.050.39 0.04 Ethoprop " 0.500 86 60-1300.050.43 0.05 Mevinphos " 0.500 106 60-1300.250.53 0.21 Methyl parathion " 0.500 88 60-1300.100.44 0.07 Phorate " 0.500 90 60-1300.050.45 0.03 Ronnel " 0.500 78 60-1300.250.39 0.16 Trichlorinate " 0.500 98 60-1300.050.49 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 720.180 " 0.250 60-130Surrogate: Tribuytlphosphate 760.190 LCS Dup (2080631-BSD1)Prepared: 08/04/12 Analyzed: 08/06/12 Bolstar ug/l 0.500 90 60-130 17 300.100.45 0.09 Diazinon " 0.500 88 60-130 12 300.050.44 0.04 Ethoprop " 0.500 90 60-130 5 300.050.45 0.05 Mevinphos " 0.500 90 60-130 16 300.250.45 0.21 Methyl parathion " 0.500 84 60-130 5 300.100.42 0.07 Phorate " 0.500 86 60-130 5 300.050.43 0.03 Ronnel " 0.500 76 60-130 3 300.250.38 0.16 Trichlorinate " 0.500 90 60-130 9 300.050.45 0.05 " 0.250 60-130Surrogate: Triphenyl phosphate 640.160 " 0.250 60-130Surrogate: Tribuytlphosphate 640.160 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 9 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12G0800 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2073157 Blank (2073157-BLK1)Prepared: 07/31/12 Analyzed: 08/01/12 Hardness (Total)mg CaCO3/L10ND 10 Duplicate (2073157-DUP1)Prepared: 07/31/12 Analyzed: 08/01/12 Source: 12G0783-01 Hardness (Total)mg CaCO3/L 1260 3 201001220 100 Batch 2080831 Blank (2080831-BLK1)Prepared & Analyzed: 08/08/12 Oil & Grease mg/l5ND 5 LCS (2080831-BS1)Prepared & Analyzed: 08/08/12 Oil & Grease mg/l 40.0 92 78-114537 5 LCS Dup (2080831-BSD1)Prepared & Analyzed: 08/08/12 Oil & Grease mg/l 40.0 90 78-114 2 20536 5 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 10 of 11 EnviroMatrix Analytical, Inc. Appendix 7.2 Appendix 7.2 Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12H0100 Carlsbad Dry Weather Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES Date Received 45G-13 12H0100-01 08/03/12 14:25 08/03/12 16:27Stormwater The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 4 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12H0100 Carlsbad Dry Weather Microbiological Parameters by Standard Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 45G-13 (12H0100-01) Stormwater Sampled: 08/03/12 14:25 Received: 08/03/12 16:27 2080642 08/03/12 08/04/12 SM9223MPN/100 ml 100Total Coliforms 141000 100 100 "" " ""10E. Coli 7270 10 10 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 4 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12H0100 Carlsbad Dry Weather Notes and Definitions Sample results reported on a dry weight basis (if indicated in units column) Relative Percent DifferenceRPD dry Not ReportedNR Analyte NOT DETECTED at or above the reporting limit (or method detection limit when specified)ND MDL Method detection limit (indicated per client's request) The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 4 EnviroMatrix Analytical, Inc. Appendix 7.2 Appendix 7.2 Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12H0385 Carlsbad Dry Weather Sample ID Laboratory ID Matrix Date Sampled ANALYTICAL REPORT FOR SAMPLES Date Received 36B-74 12H0385-01 08/14/12 16:10 08/15/12 13:14Stormwater The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 2 of 5 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12H0385 Carlsbad Dry Weather Conventional Chemistry Parameters by Standard/EPA Methods Analyte Result MDL Limit Reporting Units Dilution Batch Prepared Analyzed Method Notes 36B-74 (12H0385-01) Stormwater Sampled: 08/14/12 16:10 Received: 08/15/12 13:14 2081652 08/16/12 08/16/12 mg/l 11.7 0.1 0.5Methylene Blue Active Substances SM5540 C The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 3 of 5 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12H0385 Carlsbad Dry Weather Result Limit Reporting Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Notes Analyte Conventional Chemistry Parameters by Standard/EPA Methods - Quality Control MDL Batch 2081652 Blank (2081652-BLK1)Prepared & Analyzed: 08/16/12 Methylene Blue Active Substances mg/l0.5ND 0.1 LCS (2081652-BS1)Prepared & Analyzed: 08/16/12 Methylene Blue Active Substances mg/l 1.00 87 80-1200.50.9 0.1 LCS Dup (2081652-BSD1)Prepared & Analyzed: 08/16/12 Methylene Blue Active Substances mg/l 1.00 88 80-120 1 200.50.9 0.1 Duplicate (2081652-DUP1)Prepared & Analyzed: 08/16/12 Source: 12H0385-01 Methylene Blue Active Substances mg/l 1.7 4 200.51.7 0.1 Matrix Spike (2081652-MS1)Prepared & Analyzed: 08/16/12 Source: 12H0385-01 Methylene Blue Active Substances mg/l 1.7 80-120 QM-070.5ND 0.1 Matrix Spike Dup (2081652-MSD1)Prepared & Analyzed: 08/16/12 Source: 12H0385-01 Methylene Blue Active Substances mg/l 1.7 80-120 20 QM-070.5ND 0.1 Reference (2081652-SRM1)Prepared & Analyzed: 08/16/12 Methylene Blue Active Substances mg/l 0.347 90 68.9-131.1 J0.50.3 0.1 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 4 of 5 EnviroMatrix Analytical, Inc. Appendix 7.2 Project Name: D-Max EngineeringClient Name:EMA Log #: 12H0385 Carlsbad Dry Weather Notes and Definitions QM-07 Insufficient sample size provided to prepare matrix spikes. J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag). Sample results reported on a dry weight basis (if indicated in units column) Relative Percent DifferenceRPD dry Not ReportedNR Analyte NOT DETECTED at or above the reporting limit (or method detection limit when specified)ND MDL Method detection limit (indicated per client's request) The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. Page 5 of 5 EnviroMatrix Analytical, Inc. Appendix 7.2 Appendix 7.2 BATIQUITOS LAGOON AGUA HEDIONDA LAGOON BUENA VISTA LAGOON PACIFIC OCEAN PALOMAR AIR P O R T R D LA COSTA AV POINSETTIA LNCARLSBAD BL C A R L SB A D V IL L AG E DROLIVENHAIN R D ALGA RDC AN N O N R DTAMARACK AV EL CAMI NO RE AL MELROSE DRAVI A R A P Y RANCHO SANTA F E R DCOLLEGE BLENCI NITAS CREEKSAN MARCOS CREEK E N C IN A S C R EEK A G UA H E DIO N D A C R E E K City Boundary Water Bodies Watershed Subbasins: Agua Hedionda Creek Batiquitos/San Marcos Creek Buena Vista Creek Encinas Creek Major Roads Rivers/Streams Storm Drain Conduit Storm Drain Structure 0 3,500 FeetProduced by City of Carlsbad GIS Department December 2012 J:\cbgis\products\Standard Maps\STORM-PROGRAMS\FacilitiesYearEnd12 City of CarlsbadMunicipal Separate Storm Sewer System (MS4) Appendix 7.3 Jurisdictional Urban Runoff Management Plan Annual Report July 1, 2011 – June 30, 2012 Appendix 8 DATE DEPT/DIV ATTENDANCE TRAINING TYPE NAME OF TRAININGLOCATION SPONSOR/PRESENTER07/07/2011 LDE 5 Staff meetingDiscussed updating hydroseed note; misalignment of ESA on GIS maps; curb painting;upcoming inspector SWPPP training; consideration of Clearwater BMP as media filter.1635 FaradayJeremy Riddle07/12/2011 EM1 ConferenceESRI International User ConferenceSD Convention Center ESRI07/13/2011 EM1 ConferenceESRI International User ConferenceSD Convention Center ESRI07/14/2011 LDE7 Staff meetingReviewed Tabata 10 HMP/DMA plan;Isis LID/BMP items;Legoland HMP increase in perviousness due to development1635 FaradaySteve Bobbett07/21/2011 LDE7 Staff meetingReviewed Palomar Commons rough grading plan; CUP 10‐08 La Posada DMA exhibit with turfblock, bio‐infiltration and bio‐retention1635 FaradaySteve Bobbett07/28/2011 LDE7 Staff meetingDiscussed methodology for capturing/reporting priority projects granted exemption from hydromodification; addition of new file in the Q drive for exemptions so granted.1635 FaradaySteve Bobbett08/04/2011 LDE5 Staff meetingDiscussed available programs/software to determine hydromodofication runoff volumes; temporary desiltation basin details with anti‐seepage ring, trash rack; Palomwa Commons SWMP owner/lease transfer;comparisions of hydromodification solutions for missing link of College (new full width street) and widening of El Camino Real (landscaped median).1635 FaradaySteve Bobbett08/11/2011 LDE6 Staff meetingReviewed CIP CMP replacement and lining plans; cross gutter removal and replacement; Agua Hediondia Lagoon foundation proposal to expand parking lot1635 FaradaySteve Bobbett08/18/2011 LDE7 Staff meetingAnnounced revision to procedure establishing BMP?Erosion Control security; Reviewed PIP 11‐01 Bressi Ranch hydromodification/filtration (flow‐through planter); various CMP replacement ideas, discussions and suggestions1635 FaradaySteve Bobbett Glen Van PeskiJeromey Riddle08/24/2011 EM 1 ConferenceStormconAnaheim Marriot Storm ConStorm Water Training LogFY 2011‐12Appendix 8.1 08/25/2011 LDE7 Staff meetingAnnounced upcoming SCWRP workshop; Discussed Palomar Commons plan review; Reviewed top of slope‐basin‐pumps‐outfalls; Moroya hydromodification review; use of existing paved medians to remove pavement and obtain credit for street widening.1635 FaradaySteve Bobbett08/31/2011U.S. Water Prize Winners Webinar Series1 WebinarThe City of Los AngelesOn‐line, 1635 Faraday Frank Jimeno08/31/2011U.S. Water Prize Winners Webinar Series1WebinarThe City of Los AngelesOn‐line, 1635 Faraday Frank Jimeno09/01/2011 LDE5 Staff meetingDiscussed SCWRP seminar and follow up field workshop; review of transfer of maintenance responsibility for re‐subdivided properlty1635 FaradaySteve Bobbett09/01/2011 LDE 5 Staff meetingDiscussed SCWRP seminar and follow up field workshop; review of transfer of maintenance responsibility for re‐subdivided properlty1635 FaradaySteve Bobbett09/08/2011 LDE 7 Staff meetingPresentation be D Rick re SCWRP analysis and the workshop attended by D Rick and J Riddle. Discussed request to determine site bedrock as reason to hydromodification exemption.1635 FaradaySteve Bobbett09/08/2011 LDE7 Staff meetingPresentation be D Rick re SCWRP analysis and the workshop attended by D Rick and J Riddle. Discussed request to determine site bedrock as reason to hydromodification exemption.1635 FaradaySteve Bobbett09/15/2011 LDE 7 Staff meetingGroup discussion of SCWRP analysis including POC. Reviewed Sepring Hills Suites, re‐dev of existing site and SDP 09‐05.1635 FaradaySteve Bobbett09/15/2011 LDE 7 Staff meetingGroup discussion of SCWRP analysis including POC. Reviewed Sepring Hills Suites, re‐dev of existing site and SDP 09‐05.1635 FaradaySteve Bobbett09/22/2011 LDE5 Staff meetingnnounced CSD certifications avalable vis CASQA; Reviewed Robertson Ranch West Village bioretention for El Camino Real widening1635 FaradayJeremy Riddle09/22/2011 LDE 5 Staff meetingnnounced CSD certifications avalable vis CASQA; Reviewed Robertson Ranch West Village bioretention for El Camino Real widening1635 FaradayJeremy Riddle09/27/2011 EM1 WebinarIndustrial PermitWork stationFoley & Lardner LLPAppendix 8.1 09/29/2011 LDE6 Staff meetingPresentation by J Riddle re items HMP subgroup is considering for clarification, ie POC domain of analysis, orifice size, etc. Reviewed Fairfield Inn bioretention proposal and SDP 09‐05 temp desiltaton basins1635 FaradaySteve Bobbett09/29/2011 LDE6 Staff meetingPresentation by J Riddle re items HMP subgroup is considering for clarification, ie POC domain of analysis, orifice size, etc. Reviewed Fairfield Inn bioretention proposal and SDP 09‐05 temp desiltaton basins1635 FaradaySteve Bobbett10/06/2011 LDE 6 Staff meetingAnnouncement that CASQA fees to increase and Filtrexx Green Infrastructure / LID seminar 10‐13‐11. Reviewed Tetratec softward and user guide for San Diego Hydro Model1635 FaradaySteve Bobbett10/06/2011LDE6 Staff meetingAnnouncement that CASQA fees to increase and Filtrexx Green Infrastructure / LID seminar 10‐13‐11. Reviewed Tetratec softward and user guide for San Diego Hydro Model1635 FaradaySteve Bobbett10/13/2011 LDE5 Staff meetingReviewed CT 11‐02 pervious pavement and bioswale1635 FaradaySteve Bobbett10/13/2011 LDE5 Staff meetingReviewed CT 11‐02 pervious pavement and bioswale1635 FaradaySteve Bobbett10/20/2011 LDE 7 Staff meetingDiscussed building department inspection of project sites, CT 06‐15 Tabata Ranch flow through planters and Rancho Costera BMP calculations.1635 FaradaySteve Bobbett10/20/2011 LDE7 Staff meetingDiscussed building department inspection of project sites, CT 06‐15 Tabata Ranch flow through planters and Rancho Costera BMP calculations.1635 FaradaySteve Bobbett12/14/2011 EM1 WebinarEvaluating Stormwater Outreach: Is anyone listening?Work stationStormwater Magazine01/05/2012 LDE6 Staff meetingDiscussed Tabata 10; Legoland proposal to consider entier site as project with individual sub‐projects for SWMP purposes. Reviewed PIP 05‐25A's need of PUD to propose comon BMPs1635 FaradaySteve Bobbett01/12/2012 LDE6 Staff meetingAnnounced training for stormwater modeling and stormwater inspection, Discussed Jellyfish BMP, Reviewed Dos Colinas council presentation, Butcher's Brewery as retail commercial outlet, Encinas Creek basins adjacent to r/w and top of slopes, Fire Station #3 basin with 72" CSP underground hydromod storage.1635 FaradaySteve BobbettAppendix 8.1 01/19/2012 LDE6 Staff meetingDiscussed commercial tenant improvements with conversion of delivery/landscape areas to additional parking; Quarry Creek BMPs and their proposal to construct hyudromod BMPs at time of superpad grading. Reviewed Inns at Buena Vista Creek a development in Oceanside with BMP within Carlsbad (north of PCR and BV Creek srb)1635 FaradaySteve Bobbett01/26/2012 EM2 Webinar5 Steps to Effective Public OutreachWork stationStormwater Magazine01/26/2012 LDE 6 Staff meetingDiscussed applicibility of required treatment control BMP table for non‐priority projects: Leave table with NA and blank for SUSMP project priority designation.1635 FaradaySteve Bobbett02/02/2012 LDE6 Staff meetingAnnounced attendance at county hydromod seminar. Reviewed click‐drag options for rainfall, BMP and infiltraton input data. Discussed Type F inlets with orifice; Reviewed potential for evaluation priority project for hydromod that may also increase downstream 100 year Q that may not be contained within downstream facilities.1635 FaradaySteve Bobbett02/09/2012 LDE6 Staff meetingReviewed Daybreak bioretention basins and determination of PDP. PAR/College right turn lane and storm drain extension not a priority project.1635 FaradaySteve Bobbett02/16/2012 LDE6 Staff meetingDiscussed proper follow up of stormwater requiremenst in the Mitigation & Monitoring Program for projects with mitigated negative declarations.1635 FaradaySteve Bobbett02/23/2012 LDE7 Staff meetingDiscussed hydromodification criteria for CT expansions; Reviewed espansion of Life Technologies CD 12‐xx for addition of 14 new parking spaces with an area less than 5,000 sf; Reviewed bioretention anf flow through planters.1635 FaradaySteve Bobbett03/01/2012 LDE 6 Staff meetingDiscussed BMP Maint Agrmt for Palomar Commons, SDP 09‐051635 FaradaySteve Bobbett03/08/2012 LDE 6 Staff meetingReviewed Plaza Camino Real bioretention along El Camino Real, discussed potential for priority project subject to treatment control but not subject to hydromodification due to decrease in impervious area.1635 FaradaySteve BobbettAppendix 8.1 03/15/2012 LDE7 Staff meetingDiscussed BMP documentation and inventory possibilities; choosing std CASQA codes for SSBMP; need for inventory of inspected sites to be consistent. SSBMP sheet needs consistent input for Treatment Control, Source Control, and LID CASQA code.1635 FaradaySteve Bobbett03/21/2012 EM1 WebinarHistory and Evolution of the Clean Water ActWork stationEPA03/21/2012 EM1 WebinarHistory and Evolution of the Clean Water ActWork stationEPA03/22/2012 LDE6 Staff meetingReviewed examples of SSBMP eshibits to standardize CASQA callouts and definitions1635 FaradaySteve Bobbett03/29/2012 LDE6 Staff meetingReviewed CASQA codes for use on SSBMP; Considered applicable SWPPP criteria for desalination plant; Reviewed addition of carwash to existing gas station at Cannon and I‐151635 FaradaySteve Bobbett03/30/2012EM1 TrainingHazwoper 24hourSan DiegoPacific Safety Center04/05/2012 LDE6 Staff meetingReviewed: 2010 CA 303d Water quality segments with required TMDL; Kirgis scheduling/phasing and inplementation of various hydromodification facilities; Daycare facility on College ave regarding review of preliminary hydromodification and DMA exhibit; Fresh & Easy with regard to priority project and possibility of hardened channel to Pacific; La Costa Oaks 2.3 use of former 100 year storage tank for hydromodification purposes only.1635 FaradaySteve Bobbett04/12/2012 LDE7 Staff meetingAnnounced new draft board order available on‐line;city financed study to identify stabilized channels and stormwater committed meeting review by J Riddle.1635 FaradaySteve Bobbett04/17/2012 EM1 WebinarUsing the Clean Water Act State Revolving Fund for Nonpoint Source and National Estuary Projects Work stationEPA04/19/2012 LDE7 Staff meetingDiscussed as‐builting TCBMP on precise grading plans; review of City of Vista proposed standard detail for pervious gutter. Reviewed PIP 05‐23Ax2 regarding notification to applicant that implementation of hydromodificaton requirements will significantly affect the design of the project; SDP 09‐05 review of SSBMP exhibit; CT 08‐07 regarding leverl of SWPPP required for mass grading only.1635 FaradaySteve Bobbett04/26/2012 LDE6 Staff meetingReviewed La Costa Villas on Gibralter regarding inclusion of hydromodification measures; Floral Trade Center preliminary review of wide bioretention facilities and ervious areas.1635 FaradayGlen Van PeskiAppendix 8.1 05/03/2012 LDE6 Staff meetingReviewed hydroseed mixes for basins; PIP 05‐25Ax1 phasing of hydromodificaton basins; CDP 12‐07 Ocean Estates determination of std or priority project; SDP 05‐04 regarding hydromod requirements and possible use of green roof on constrained site.1635 FaradaySteve Bobbett05/10/2012 LDEStaff meetingMeeting attendance and discussion notes not available1635 FaradaySteve Bobbett05/17/2012LDE7 Staff meetingReviewed redevelopment of a portion of the Costco site; SDP 10‐10A with courtyard BMPs, lined pervious pavement, and channel analysis of Encinas Creekl1635 FaradaySteve Bobbett05/24/2012 LDE 6 Staff meetingDiscussed PD 12‐01, a PIP grading plan with BMP and hydromod measures, bio retention areas at 4% for treatment of site and enlareged basin for hydromod. Discussed FloGuard presentation. Discussed non‐applicability to change time of concentration to reduce 100 year Q and therefore find project exempt from hydromod. Discusste bio retention / flo thru BMP sized for both treatment and hydromod, i.e. treatment in 18" of engineered soil with crate boxes below for hydro mod storage. Becomes bioretention with vault.1635 FaradaySteve Bobbett05/31/2012 LDE 6 Staff meetingAnnounced upcomming co‐permittee meeting to discuss DRAFT permit, changes to PDP descriptions and hydromodificaton exemptiong which would require retention of 85 %tile storm event. Reviewed project where unlined basin water could co‐mingle with rock bedding in utility trenches.1635 FaradaySteve Bobbett06/07/2012 LDE7 Staff meetingReviewed Robertson Ranch West Village vesting TM with desilting basins for mass grading and future streets.1635 FaradaySteve Bobbett06/14/2012 LDE 6 Staff meetingReviewed prelim SWMP/Hydromod for Bressi Ranch two hotel PIP proposal; City Compliance with hydromod criteria for traffic circle at State St and Coast Highway.1635 FaradaySteve Bobbett06/21/2012 LDE 5 Staff meetingDiscussed use of San diego Hydrology Model in lieu of calculator.1635 FaradaySteve Bobbett06/28/2012 LDE 6 Staff meetingAnnounced collabrative workshops with NRDC, Coast Keepper, Surfrider, co permittees; discussed combination sizing factors for bioretention plus cistern facilities; reviewed revision to stormwater treatment facilities at La Costa Condominiums.1635 FaradaySteve BobbettAppendix 8.1 07/19/2012 EM1 WebinarStream Pollution Trends Monitoring Program (SPoT) Work stationCDPR09/27‐28/2011 EM1 ConferenceCASQA ConferenceMonterey, CACASQA09/27‐28/2011 EM1 ConferenceCASQA ConferenceMonterey, CACASQAAppendix 8.1 For more information visit www.carlsbadca.gov, call the Storm Water Hotline at 760-602-2799, or email stormwater@carlsbadca.gov. Storm Water Protection Program 1635 Faraday Ave. Carlsbad, CA 92008 Spill response Quick and efficient response to spills is the most effective way to avoid contaminated runoff to the storm drain system. n Use mops and absorbents, such as cat litter or sawdust to clean up small spills. n Keep spill response kits readily available. n Write and keep a current spill response plan. Be sure that all appropriate contacts are updated. n Ensure employees are trained on appropriate spill response. Employee training n Train employees on storm water pollution prevention. n Post information in employee areas n Keep records of employee training events. Other BMPs may be required to prevent pollutants from entering the storm drain system. Storm WaterProtection Program Industrial/Commercial Business Guide to Pollution Prevention Printed on recycled paper Photographs © City of Carlsbadand iStockphoto.com To report illegal discharges, call 760-602-2799. Appendix 8.2 Industrial and commercial businesses are required to comply with municipal storm water rules and regulations to prevent storm water pollution. Potential pollutants from industrial and commercial facilities include trash, bacteria, hazardous materials, sediment, nutrients, pesticides, organics, oil and grease, and metals. The storm water conveyance system is not connected to sanitary sewer or treatment facilities. Rainwater and urban runoff transport pollutants directly into our creeks, lagoons and ocean. All businesses are subject to storm water regulations. Violations of these regulations can result in enforcement action and penalties. Best Management Practices (BMPs) are methods and behaviors to prevent pollution. Proper implementation of the following BMPs can prevent storm water pollution. Materials storage and handling Improperly stored materials can spill or run off during rain events. n When possible, store materials, especially liquids, hazardous waste and other chemicals, indoors or under covered and contained areas. n Cover materials stored outdoors to protect them from rain run-on and run-off. n Dispose of unused materials properly. Waste disposal and management Disposal areas must be properly maintained to prevent trash, liquids and other pollutants from entering the storm drain system. n Keep dumpsters closed when not in use. n Sweep up trash and debris in outdoor areas. n Ensure that trash is properly secured to prevent spills and leaks. n Immediately clean up spills and leaks. n If no recycling program is in place, consider contacting your waste hauler about recycling programs. Good housekeeping Simple housekeeping practices are very effective at preventing polluted runoff: n Use mops, brooms or wire brushes to clean dumpsters, sidewalks, buildings and other surfaces. Wash water is never allowed to drain to the street, gutter or storm drain. n Sweep up trash and debris, including organic matter such as leaves and dirt. Preventative maintenance Proper maintenance of equipment, vehicles, building structures and storm drains can prevent larger problems from occurring. n Keep equipment and vehicles properly serviced. Inspect frequently and clean and repair as needed. n Gutters, storm drains, catch basins and other drainage should be regularly inspected and cleaned. Filters, drain covers, sand bags and other materials should be regularly inspected and replaced as necessary. n Regularly inspect and maintain BMPs as needed. Appendix 8.2 Jurisdictional Urban Runoff Management Plan Annual Report July 1, 2011 – June 30, 2012 Appendix 10 COPERMITEE NAME: City of Carlsbad SAN DIEGO COUNTY COPERMITTEES FISCAL ANALYSIS REPORT FOR URBAN RUNOFF MANAGEMENT PROGRAMS EXPENDITURE SUMMARY FY 11-12 ADMINISTRATION $645,278 DEVELOPMENT PLANNING $126,997 CONSTRUCTION $140,041 MUNICIPAL $1,360,839 INDUSTRIAL AND COMMERCIAL $123,900 RESIDENTIAL included elsewhere IDDE*$96,699 EDUCATION $35,299 PUBLIC PARTICIPATION included elsewhere SPECIAL INVESTIGATIONS NON-EMERGENCY FIREFIGHTING $2,529,052 Watershed 1-Carlsbad Watershed** $40,327 Watershed 2 Watershed 3 Watershed 4 Watershed 5 Watershed 6 Watershed 7 Watershed 8 $40,327 Total Copermittee Cost Share $125,718 $125,718 $2,695,098 Notes: Due to limitations fo the City's financial system, costs provided are best estimates. Not all categories are easily identifiable as specific to the category on this list. Staff believes that the information provided is as accurate as possible, given the constraints of the financial reporting system. *Includes a small portion of MS4 monitoring costs TOTAL COSTS JURISDICTIONAL COMPONENTS Jurisdictional Total WATERSHED Watershed Total REGIONAL Regional Total Appendix 10.1 COPERMITEE NAME: City of Carlsbad SAN DIEGO COUNTY COPERMITTEES FISCAL ANALYSIS REPORT FOR URBAN RUNOFF MANAGEMENT PROGRAMS **Carlsbad Watershed expenses reported here are total expenses for the City of Carlsbad. These expenses are offset by approximately $20,462 in revenues by other co‐permittees within the Watershed. Appendix 10.1