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Home My WebLink About; ; JURMP Annual Report 2005-2006 NPDES Permit Order No. 2001-01 Dry Weather; 2007-01-01 CITY OF CARLSBAD DRY WEATHER FIELD SCREENING AND ANALYTICAL MONITORING PROGRAM 2006 Submitted to: City of Carlsbad Public Works Department 1635 Faraday Avenue Carlsbad, California 92008 Prepared by: D-MAX Engineering, Inc. 7220 Trade Street, Suite 119 San Diego, CA 92121 Tel: (858) 586-6600 Fax: (858) 586-6644 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 December 12, 2006 Project No. 200607W-1 Elaine Lukey Public Works Department City of Carlsbad 1635 Faraday Avenue Carlsbad, CA 92008 Re: 2006 Dry Weather Field Screening and Analytical Monitoring Program City of Carlsbad Dear Ms. Lukey: Enclosed please find our final report for the City of Carlsbad 2006 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 2006 dry weather season. The contents include field screening data and analytical laboratory test results, analysis of the collected 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 the field screening program and our recommendations for additional actions. 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. If you have any questions regarding this report, please call me at (858) 586-6600 ext. 22. Sincerely, D-MAX Engineering Inc. Arsalan Dadkhah, Ph.D., P.E. Project Manager TABLE OF CONTENTS PAGE i TABLE OF CONTENTS SECTION……………………………………………………………………………………………………………..PAGE 1.0 INTRODUCTION............................................................................................................................................1 1.1 HYDROLOGIC SETTING............................................................................................................................. 1 1.2 REGULATORY REQUIREMENTS.................................................................................................................. 1 1.3 PROGRAM OVERVIEW .............................................................................................................................. 1 1.4 PREVIOUS WORK..................................................................................................................................... 2 1.5 REPORT OUTLINE .................................................................................................................................... 6 2.0 SAMPLING LOCATIONS ..........................................................................................................................13 3.0 FIELD AND LABORATORY ANALYTICAL METHODS...........................................................................19 3.1 FIELD SCREENING PROCEDURES AND METHODS..................................................................................... 19 3.2 LABORATORY ANALYTICAL METHODS...................................................................................................... 20 3.3 QUALITY ASSURANCE AND QUALITY CONTROL (QA/QC) ......................................................................... 20 3.3.1 Field Sampling and Analysis QA/QC.................................................................................................................20 3.3.2 Laboratory Sampling and Analysis QA/QC........................................................................................................21 3. 4 FOLLOW-UP ACTION LEVELS................................................................................................................... 21 4.0 FIELD SCREENING RESULTS.................................................................................................................26 4.1 QUALITATIVE OBSERVATIONS................................................................................................................. 26 4.2 FIELD ANALYTICAL RESULTS .................................................................................................................. 33 5.0 LABORATORY ANALYTICAL RESULTS.................................................................................................39 5.1 SUMMARY.............................................................................................................................................. 39 6.0 DATA ANALYSIS ......................................................................................................................................42 SITE AH03...................................................................................................................................................... 42 SITE AH04...................................................................................................................................................... 42 SITE AH08...................................................................................................................................................... 42 SITE AH10...................................................................................................................................................... 42 SITE AH12...................................................................................................................................................... 43 SITE AH13...................................................................................................................................................... 43 SITE AH18...................................................................................................................................................... 43 SITE AH24...................................................................................................................................................... 43 SITE AH31...................................................................................................................................................... 43 SITE AH45...................................................................................................................................................... 44 SITE AH46...................................................................................................................................................... 44 SITE BA06...................................................................................................................................................... 44 SITE BA07...................................................................................................................................................... 44 SITE BA13...................................................................................................................................................... 45 SITE BA32...................................................................................................................................................... 45 SITE BA36...................................................................................................................................................... 45 SITE BA40...................................................................................................................................................... 45 SITE BA47...................................................................................................................................................... 45 SITE BA51...................................................................................................................................................... 46 SITE BV02...................................................................................................................................................... 46 SITE BV04A.................................................................................................................................................... 46 TABLE OF CONTENTS PAGE ii SITE BV08...................................................................................................................................................... 46 SITE EN02C................................................................................................................................................... 46 SITE EN14...................................................................................................................................................... 46 SITE EN14A.................................................................................................................................................... 47 SITE EN19...................................................................................................................................................... 47 SITE EN21...................................................................................................................................................... 47 SITE EN31...................................................................................................................................................... 47 7.0 ADDITIONAL STUDY................................................................................................................................49 7.1 QUALITATIVE OBSERVATIONS................................................................................................................. 49 7.2 FIELD ANALYTICAL RESULTS .................................................................................................................. 49 7.3 LABORATORY ANALYTICAL RESULTS....................................................................................................... 50 8.0 FOLLOW UP INVESTIGATIONS...............................................................................................................52 8.1 PURPOSE .............................................................................................................................................. 52 8.2 INVESTIGATION PROCEDURE .................................................................................................................. 52 8.3 INVESTIGATED SITES.............................................................................................................................. 54 Site AH03....................................................................................................................................................................54 Site AH08....................................................................................................................................................................56 Site AH10....................................................................................................................................................................57 Site AH12....................................................................................................................................................................59 Site AH13....................................................................................................................................................................60 Site AH24....................................................................................................................................................................60 Site AH31....................................................................................................................................................................61 Site AH45....................................................................................................................................................................62 Site AH46....................................................................................................................................................................64 Site BA06....................................................................................................................................................................66 Site BA13....................................................................................................................................................................67 Site BA36....................................................................................................................................................................72 Site BA40....................................................................................................................................................................73 Site BA47....................................................................................................................................................................75 Site BA51....................................................................................................................................................................75 Site BV02....................................................................................................................................................................76 Site BV04A..................................................................................................................................................................78 Site BV08....................................................................................................................................................................78 Site EN02C.................................................................................................................................................................79 Site EN14 and Site EN14A.........................................................................................................................................79 Site EN19....................................................................................................................................................................80 Site EN31....................................................................................................................................................................81 9.0 SUMMARY AND RECOMMENDATIONS..................................................................................................82 9.1.1 SUMMARY OF FIELD SCREENING AND LABORATORY ANALYSIS DATA......................................................... 82 9.1.2 Summary of Upstream Investigation Data........................................................................................................83 9.2 RECOMMENDATIONS .............................................................................................................................. 85 9.2.1 Education...........................................................................................................................................................85 9.2.2 Inspection and Maintenance..............................................................................................................................85 9.2.3 Further Investigation..........................................................................................................................................86 TABLE OF CONTENTS PAGE iii TABLE OF CONTENTS (CONTINUED) TABLES 1-1 SUMMARY OF HISTORICAL DRY WEATHER MONITORING DATA 2-1 2006 DRY WEATHER MONITORING STATIONS 3-1 FIELD ANALYTICAL METHODS 3-2 LABORATORY ANALYTICAL METHODS 3-3 ACTION LEVELS FOR FIELD SCREENING AND LABORATORY PARAMETERS 4-1 SUMMARY OF FIELD OBSERVATIONS 4-2 FIELD ANALYSIS STATISTICAL SUMMARY 4-3 SUMMARY OF FIELD ANALYTICAL RESULTS 5-1 LABORATORY ANALYSIS STATISTICAL SUMMARY 5-2 SUMMARY OF LABORATORY ANALYTICAL RESULTS 7-1 ADDITIONAL STUDY SUMMARY OF FIELD ANALYTICAL RESULTS 7-2 ADDITIONAL STUDY SUMMARY OF LABORATORY ANALYTICAL RESULTS 9-1 SUMMARY OF UPSTREAM INVESTIGATIONS FIGURES 1 CITY OF CARLSBAD DRAINAGE MAP WITH 2006 DRY WEATHER SAMPLING LOCATIONS 2 WATERSHED MAP OF THE CARLSBAD AREA, BROKEN INTO HYDROLOGIC SUBAREAS GRAPHICAL DATA 4-1 TEMPERATURE 4-2 PH 4-3 TURBIDITY 4-4 CONDUCTIVITY 4-5 AMMONIA 4-6 DETERGENTS 4-7 NITRATE 4-8 ORTHOPHOSPHATE APPENDICES A PHOTOGRAPHS OF SAMPLING LOCATIONS B LABORATORY ANALYTICAL REPORTS C FIELD DATA SHEETS CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 1 1.0 INTRODUCTION 1.1 Hydrologic Setting The City of Carlsbad (City) lies entirely within the Carlsbad Hydrologic Unit (904). The City is naturally divided into four separate sub-watersheds (see Figure 2). Land use within each watershed determines the potential for generating both runoff and pollutants into receiving water bodies. The four major receiving water bodies or drainage basins that collect the City’s storm water are: o Buena Vista Creek and Lagoon o Encinas Creek o Agua Hedionda Creek and Lagoon o San Marcos Creek and Batiquitos Lagoon. Much of the runoff within the City discharges into three coastal lagoons and eventually into the Pacific Ocean. Agua Hedionda Creek discharges into Agua Hedionda Lagoon. Buena Vista Creek discharges into Buena Vista Lagoon. San Marcos Creek discharges into Batiquitos Lagoon. Encinas Creek discharges directly into the Pacific Ocean. The City of Carlsbad makes up 100% of the land area of the Encinas sub-watershed, 41% of the Agua Hedionda sub-watershed, 29% of San Marcos and 19% of the Buena Vista sub-watershed. 1.2 Regulatory Requirements Under the current Municipal Storm Water Permit, San Diego Regional Water Quality Control Board (RWQCB) Order No. 2001-01, each of the 21 Copermittees in San Diego County, including the City of Carlsbad, is required to conduct annual dry weather field screening of discharges into the storm drain system within its jurisdiction. The main portions of the permit that discuss the dry weather monitoring program are Sections F.5.b, F.5.c, and F.5.d, as well as Attachment E. As under previous regulations, this procedure consists of field observations, flow estimation, and field analysis at selected locations along the storm drain conveyance system during the dry weather season. However, under the current Municipal Storm Water Permit, more extensive field analysis is required, and Copermittees are also required to conduct laboratory analysis for 25 percent of the sites with flowing or ponded water. At each sampling location that exhibits no flow, alternate sampling stations must be selected and sampled. If the results of the field or laboratory analysis exceed specific action levels, follow-up investigations are required. 1.3 Program Overview To comply with the San Diego Municipal Storm Water Permit adopted by the RWQCB, the City of Carlsbad is required to conduct field screening and analytical monitoring at different sampling locations throughout the City during the dry weather season (May 1st through September 30th). The purpose of the Dry Weather Field Screening and Analytical Monitoring Program is to detect and eliminate illicit connections and illegal discharges (IC/IDs) to the storm drain conveyance system, minimizing the negative impacts of human activities on receiving water bodies. The dry weather monitoring program consists of the following three components: • Field screening observations CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 2 • Field analytical testing • Laboratory analytical testing Information collected from the dry weather monitoring is also used to characterize dry weather discharges in the storm drain system and identify conveyances that are discharging elevated levels of pollutants. Follow-up studies and source investigations are conducted as necessary, to detect and eliminate the sources of these pollutants. This report presents the results of the City of Carlsbad 2006 Dry Weather Field Screening and Analytical Monitoring Program. 1.4 Previous Work The City of Carlsbad has conducted dry weather field screening programs since 1995. The results of the previous field screening programs (1995 through 2005) are discussed below and summarized in Table 1-1. In 1995, the City conducted one round of field screening at 71 sites within the City’s storm drain system. Flowing water was observed at thirty-three of the sites, 16 sites had ponded water, 14 sites were dry, six sites had trickle flow and two sites were submerged. Chemical testing revealed chlorine levels ranging from less than 0.1 milligrams per liter (mg/L) to 1.0 mg/L. Chlorine was detected at all sites tested with flowing or ponded water. Detergents ranged from less than 0.25 mg/L to 15.0 mg/L. Site AH12 had the highest level of detergents (15.0 mg/L). Phenols, ammonia and copper were below detection limits. The pH levels ranged from 4.7 to 9.5. Site EN14A had the lowest pH reading of 4.7 during initial and follow-up visits. Foam was observed at six sites. White and light brown dry foam was observed at Sites EN14A and EN23 while the other four sites had soapy, bubbly foam. In 1996, the City conducted one round of field screening at 74 locations within the City’s storm drain system. The results of the field screening for 1996 indicated that 36 sites had flowing water, 16 sites had ponded water, nine sites were dry, 11 had trickle flows and two sites were submerged. Chemical testing revealed chlorine levels ranging from less than 0.1 mg/L to 1.5 mg/L. Detergents ranged from less than 0.25 mg/L to 2.0 mg/L. Sites AH11 and AH12 had the highest detergent readings of 2.0 mg/L during initial site visits. Phenols, ammonia and copper were not detected during the field screening program. The pH readings ranged from 4.3 to 9.3. Site EN-14A had the lowest pH readings of 4.5 upon the first visit and 4.3 during the second visit. Foam was observed at several sites. Sites BA47, EN14A, EN17, EN20 and EN23 had white or light brown dry foam while Sites AH03, AH13, and BA27 had soapy, bubbly foam. In 1997, the City conducted one round of field screening at 75 locations within the City’s storm drain system. The results of the field screening indicated flowing water at 34 of the sites, ponded water at 18 sites, eight sites had trickle flow, 13 were dry, and two sites were submerged by lagoon water. Chemical testing revealed chlorine levels ranging from 0.1 mg/L to 0.6 mg/L. Detergents ranged from 0.25 mg/L to 6.0 mg/L with highest detergent readings at Sites AH11 and AH12. Phenols were detected at low levels (0.1 mg/L) at Sites BV14 and AH31. Copper was detected at three sites and ranged from 0.1 mg/L to 0.3 mg/L. Ammonia concentrations ranged CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 3 from below the field test kit detection limit (non-detect) to 10.7 mg/L. The pH readings ranged from 4.2 to 9.9, with Site EN14A having the lowest readings of 4.2 upon the first visit and 4.6 during the second visit. Foam and soap bubbles were observed at Sites BV02, EN14A, EN23, BA27, BA36, BA47 and BA48. In 1998, the City conducted one round of field screening tests at 54 locations. 21 sites that had been dry or did not show noticeable pollutant concentrations during the past screening programs were eliminated from the program. The results of the field screening indicated flowing water at 36 of the sites, ponded water at 16 sites, and two sites were dry. Chemical testing revealed chlorine levels ranging from non- detect to 0.4 mg/L. Detergents ranged from less than 0.25 mg/L to greater than 3.0 mg/L. The highest detergent readings occurred at Sites AH11 and AH12. Phenols were detected at 27 sites, and the highest reading of 1.0 mg/L was observed at Site EN23. Copper was detected only at Site EN23, where it measured 0.2 mg/L. Ammonia concentrations ranged from non-detect to 10.0 mg/L. The highest ammonia concentration of 10.0 mg/L was detected at Site AH12, while the ammonia concentration at Site BA41 was below the detection limit. The pH values ranged from 4.1 to 10.7. Site EN02B had the highest pH reading of 10.7, and Site EN23 had the lowest pH measurement of 4.1. Dry brown/white foam was observed at Sites EN14A and EN23, while Sites BA36 and BA41 had traces of soapy, bubbly suds. In 1999, the City field screened a total of 79 sites. The sites that had been omitted from the program in 1998 were re-added to the program in 1999. Among the sites visited, 32 sites had measurable flowing water, 23 sites had ponded water, eight sites had trickle flow, 14 sites were dry and two sites were submerged. Ammonia concentrations varied from non-detect to 10 mg/L. Detergent concentrations in excess of 1.0 mg/L were detected at ten sites. Lower concentration levels of detergents were detected at all of the sites tested with ponded or flowing water. Chlorine levels at the tested sites were generally low throughout the City. The concentration of chlorine reached 1.0 mg/L only during the first visit to Site BV08. Several sites had low concentrations of phenols. The maximum phenol concentration of 0.4 mg/L was detected at Sites AH46, AH59, EN14, EN14A, EN20 and EN24. A copper concentration of 0.5 mg/L was the highest detected level and was found at Site AH12. Site BA47 had a copper concentration of 0.3 mg/L. In 2000, the City performed field screening at a total of 65 sites. 14 sites tested in the previous year were eliminated because they were found to be consistently dry or did not have significant problems. This allowed more detailed investigations to be conducted at sites with chronic problems. Among the visited sites, 42 had measurable flowing water, nine sites had ponded water, one site had trickle flow and nine sites were dry. Four of the sites were observed to have flowing water during one visit but were ponded, dry, or had only trickling water upon follow-up visits. Ammonia concentrations varied from non-detect at a few of the sites to approximately 10 mg/L at Site AH04. Detergents concentrations ranged from non- detect to greater than 3.0 mg/L, the highest of which was measured at Site AH12. Chlorine levels at the tested sites were found to vary from non-detect to 2.5 mg/L. The highest chlorine level detected was at Site BV09. Both phenol and copper CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 4 levels ranged from non-detect to 0.2 mg/L. The pH levels varied from 4.3 to 10.0. Low pH levels were recorded at Sites BA47, EN14A, EN21 and EN23. In 2001, the City performed field screening at a total of 67 sites. Among the sites visited, 52 sites had measurable flowing water, six sites had ponded water, and six sites were dry. Three of the sites were observed to have flowing water during one visit but were either ponded or dry upon follow-up visits. Ammonia concentrations of 1 mg/L or higher were detected at seven sites, with all of the sites containing ponded water or measurable flow indicating the presence of ammonia. Six of the sites had detergent concentrations in excess of 1 mg/L. Both phenol and chlorine concentrations were generally low, and were only detected at 15 of the sites. The highest chlorine concentration of 0.8 mg/L was found at Site AH03, while the highest phenol concentration of 0.2 mg/L was measured at Site BA04. Copper was not detected at any of the selected sites during the 2001 dry weather program. Floatable materials such as scum, foam, suds, oily sheens, wood debris, plastic, paper and aluminum cans were found at several of the sites. Scum was observed at six sites, foam covered the water surface at five sites, ten sites had significant suds present, an oily sheen was noted at three sites, and floatable materials such as paper, plastics, and other trash were found at three sites. Site EN09 had excessive sediment, which reduced the flow capacity in two of the four corrugated metal pipes (CMPs). In 2002, the City conducted field screening at a total of 60 sites. Measurable flow was observed at 48 of the primary sites, while 11 sites were ponded, and one site was dry. Since one of the stations was observed dry, an alternate site (BV08) was selected for monitoring with this site having measurable flow. Ammonia concentrations of 1.0 mg/L or higher were found at 14 of the sites, with the highest concentration at Site BA27 of 56 mg/L. Nitrate was found at concentrations of 10 mg/L or higher at six of the sites, with four of these sites having nitrate concentrations exceeding 40 mg/L. Only one site, Site BA47, had a concentration of orthophosphate phosphorus above 2.0 mg/L. The orthophosphate phosphorus concentration at this site measured 6.5 mg/L, but dropped to at or below 0.5 mg/L on two follow-up visits. Detergents were measured at or greater than 1.0 mg/L at four of the sites and all the sites had at least a small amount of detergent present. Measurements of pH found that three sites had pH levels below 6.5 and one site had a pH above 9.0. Laboratory analysis for oil and grease found four sites with elevated concentrations and bacterial analysis found contamination at three of the sites. Laboratory results for detergents, pesticides and metals all had concentrations either at non-detect or below the action level. Floatable materials such as scum, foam, oily sheens, organic films, wood debris, plastic, paper and aluminum cans were found at several of the sites. Foam or scum covered the water surface at four sites, bubbles were observed at ten sites and an oily sheen or organic film was noted at eleven sites. In 2003 60 sites were selected for field screening. 54 of the sites had measurable flow, six sites were ponded, and Site BV15 was dry, so it was replaced with alternate Site BV08. Measurements of pH were 6.5 or lower at four of the sites. Conductivity was measured above 10,000 µmhos/cm at three sites, and an ammonia concentration of 1.0 mg/L or higher was found at 11 sites. Six sites had CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 5 nitrate concentrations at or above the action level of 10 mg, with two of sites having concentrations exceeding 40 mg/L. No sites tested above the action level for reactive phosphorus. Detergent concentrations at or above the action level of 1.0 mg/L were observed at four sites. Bacterial contamination was recorded at eight sites. Dissolved metal concentrations were not detected or below the action level at all sites. Diazinon and chlorpyrifos were not detected or below their action levels at all sites except Site BA06, which exceeded the action level for chlorpyrifos. Laboratory analysis did not detect surfactants (detergents) at any sites, and oil and grease did not exceed the action level at any sites. Trash was observed at 22 of the visited sites, and five dusty or oily sheens were noted. Results of the additional study on the City’s creeks found the diazinon concentration measured at Site BV Creek-1 and the fecal coliform count measured at Site EN Creek-1 exceeded established action levels. No other measured field and lab parameters exceeded action levels; most fell well below action levels or were not detected. In 2004 61 sites were visited; fifty-two sites had measurable flowing water. Eight sites had ponded water. One site, Site BV15, was dry so it was replaced by Site BV08. Measurements of pH were below 6.5 at three of the sites and at 9.0 at one site. An ammonia concentration of 1.0 mg/L NH3-N or higher was found at four of the sites; tests performed at all of the remaining sites indicated the presence of ammonia at lower concentrations. Nitrate concentrations at or above 10 mg/L NO3- N were observed at five sites, and two of the sites had concentrations of at least 50 mg/L NO3-N. Lower concentrations of nitrate were detected at all of the remaining sites with ponded or flowing water. Reactive phosphorous concentrations were below 1.0 mg/L PO4-P at all sampled sites. A detergent concentration of at least 1.0 mg/L was observed only at Site BA41. Five of the sites exceeded the established action level for total coliform bacteria; two of these sites also exceeded action levels for fecal coliform and enterococcus bacteria. Dissolved metal concentrations were not detected or were below the action level at all sites. No sites had detectable concentrations of the organophosphate pesticides diazinon or chlorpyrifos. Oil and grease concentrations were below the action level at all sites and surfactants (detergents) were not detected at any sites. Trash was observed at 24 of the visited sites. Bubbles or foam were observed at six of the sites, and a dull, organic sheen was observed at one site. In 2005 all 60 primary monitoring sites were visited, but as in 2005, Site BV15 was dry and was thus replaced by Site BV08. Therefore, a total of 61 site visits were conducted. Five sites had ponded water, while the rest of the sampled sites had measurable flows ranging from less than one gallon per minute (gpm) to 196 gpm. The pH readings at three of the sites were below the action level of 6.5; these three sites also had low pH readings in 2004. One site had a pH greater than 9.0. Two ammonia concentrations were found to be at or above the action level of 1.0 mg/L NH3-N, but both were below the action level upon follow-up. Sites AH08, AH10, AH12, AH13 and EN02C had nitrate concentrations above the action level of 10 mg/L NO3-N, as they had in each Dry Weather Monitoring Program since 2002. The highest nitrate concentration, 100 mg/L NO3-N, was measured at Site EN02C. Five sites exhibited a detergents concentration at or above the action level of 1.0 mg/L. At four of these sites, the concentration dropped below the action level by the time of the follow-up visit. Laboratory analysis detected bacterial indicators at or above CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 6 the action level at 11 of the sites. Eight of the sites exceeded the total coliform action level, while Site BA06 had an elevated enterococcus count and Site BA40 had an elevated fecal coliform count. Site BA13 showed elevated levels of all three bacterial indicators. None of the sites had detectable levels of the organophosphate pesticides diazinon or chlorpyrifos. Oil and grease was detected at 16 mg/L at Site AH10, but it was not detected in a second sample taken during a later follow-up visit. 1.5 Report Outline This report is presented in the following order: Section 1 discusses the hydrologic setting of the City of Carlsbad, describes the objectives of the dry weather monitoring program, provides a regulatory background, summarizes historical field screening data and provides an outline to the report. Section 2 describes the sampling locations and the site selection criteria. Section 3 describes the field screening and laboratory analytical procedures. This section also discusses quality assurance protocols used during sampling and lists appropriate action levels for initiating follow-up investigations. Section 4 discusses the results of the field screening analyses. Section 5 discusses the results of the laboratory analyses. Section 6 provides a thorough analysis of the collected field and laboratory data and includes descriptions of each site with evidence of physical, chemical, or biological pollution. Section 7 provides the results of additional creek study sites, including both field screening and laboratory analyses. Section 8 details the results of follow up investigations undertaken to isolate the source(s) of water contamination detected during the field screening program. Section 9 provides a summary of the program results and recommendations for follow-up actions. Appendix A contains photographs of each of the investigated sites. Appendix B contains the laboratory analytical reports. Appendix C contains original copies of the field data sheets. Site IDBV Creek-1EN-02AEN-02A1EN-02BEN-02CEN-09EN-11EN-13EN-14EN-14AEN-16EN-17EN-18EN-19EN-20EN-21EN-22EN-22AEN-23EN-23AEN-24EN-30EN-311995pH 7.9 8.9 7.7 na na na 4.7 7.7 na 6.8 7.6 8.1 8.7 na na 7.6 na naTemperature 23.2 25.4 21.1 na na na 21.8 26 na 22.2 26.6 31.9 24 na na 21.7 na naAmmonia mg/l 0.07 0.1 0.12 na na na 0.61 0.2 na 0.42 0.23 0.08 0.1 na na 0.16 na naDetergents mg/l 0.5 0.5 0.5 na na na 0.75 0.8 na 1 0.5 0.75 0.5 na na 0.5 na naChlorine mg/l 0.6 0.3 0.2 na na na 0.2 0.6 na <.01 0.6 0.4 0.4 na na 0.6 na naCopper mg/l nd nd nd na na na nd nd na nd nd nd nd na na nd na naPhenols mg/l nd nd nd na na na nd nd na nd nd nd nd na na nd na na1996pH 8 8.9 7.6 na na 4.3 7.7 7.7 7.1 7.5 7.9 8.4 8 7.2 8.1 na naTemperature 23.6 25.5 23.4 na na 21.9 24 24 22.3 24.9 22.9 26.2 24 23.8 26 na naAmmonia mg/l 0.2 0.07 0.05 na na 0.02 0.1 0 nd 0.01 0.5 0.9 0 0.02 nd na naDetergents mg/l 0.5 0.5 0.25 na na 2 0.3 0.3 0.5 0.75 0.75 1 1 0.25 0.25 na naChlorine mg/l 0.6 0.1 0.1 na na 0.6 0.2 0.1 nd 0.2 nd 0.3 0 0.1 0.3 na naCopper mg/l nd nd nd na na nd nd nd nd nd nd nd nd nd nd na naPhenols mg/l nd nd nd na na nd nd nd nd nd nd nd nd nd nd na na1997pH 8.39 9.88 7.57 7.2 na 4.18 8.7 na 6.69 8.89 6.94 5.6 na na 4.42 6.92 na 7.25Temperature 25.3 32 26.2 25.3 na 23.2 27 na 22.4 27.8 22.4 25.8 na na 23.7 28.6 na 26Ammonia mg/l 4.03 0.05 0.05 3.01 na 0.57 0.1 na 4.38 0.03 0.14 2.65 na na 0.78 0.07 na 0.03Detergents mg/l 0.25 0.5 0.75 1 na 3 0.3 na 1.98 0.25 0.25 1 na na 0.75 1 na 0.5Chlorine mg/l 0.2 0.2 0.2 nd na 0.1 0.2 na nd 0.6 0.1 0.1 na na 0.1 0.2 na ndCopper mg/l nd nd nd nd na nd nd na nd nd nd nd na na nd nd na ndPhenols mg/l nd nd nd nd na nd nd na nd nd nd nd na na nd nd na nd1998pH 7.5 6.9 10.7 7.7 na 5.1 4.5 7.9 6.9 8.3 7.4 7.1 4.1 7.3 7.7Temperature 20 14 27 20 na 22 20 20 19 20 21 23 20 20 22Ammonia mg/l 0.4 nd 0.2 0.6 na 0.6 0.8 0.4 0.8 0.3 0.8 10 3.5 0.6 1Detergents mg/l 0.4 0.5 0.5 0.38 na 0.75 0.75 0.3 0.5 0.5 0.5 1.25 0.75 0.25 1.5Chlorine mg/l nd nd 0.1 nd na nd nd 0.1 nd nd nd nd nd nd ndCopper mg/l nd nd nd nd na nd nd nd nd nd nd nd 0.2 nd ndPhenols mg/l nd nd nd 0.3 na 0.2 0.1 0.1 0.4 0.2 0.2 0.3 1 0.2 0.41999pH 8.4 8.8 9.7 7.7 8 8.1 5.2 8.3 na 7.4 8.1 7.8 8 na na 5.6 8.1 na 7.8Temperature 24 30 29 22 25 21 23 25 na 20 23 23 22 na na 23 24 na 22Ammonia mg/l 0.6 1 0.3 0.3 0.6 4 0.6 0.3 na 0.4 0.2 0.5 0.2 na na 0.2 0.8 na 0.1Detergents mg/l 0.75 0.75 0.75 0.75 1.5 >3.0 0.75 0.3 na 0.5 0.25 0.5 0.5 na na 0.25 0.25 na 0.5Chlorine mg/l 0.6 0.6 0.6 0.3 0.2 0.1 nd 0.2 na nd 0.1 nd 0.2 na na nd 0.3 na 0.2Copper mg/l 0.2 0.2 0.1 nd nd 0.2 nd 0.1 na 0.1 nd 0.1 0.1 na na nd 0.1 na ndPhenols mg/l nd 0.2 nd 0.3 0.1 nd 0.4 0.2 na 0.2 0.1 0.4 0.1 na na nd 0.4 na 0.32000pH 8.0 7.8 8.5 7.3 7.4 8.1 4.6 7.5 6.9 7.4 7.2 6.7 4.3 7.2 7.2Temperature 28 12 32 22 24 31 23 29 23 29 23 24 23 27 22Ammonia mg/l 0.2 10 0.2 0.4 0.8 0.8 0.6 0.8 1.5 0.8 3.5 3.0 4.0 0.3 0.3Detergents mg/l 0.25 1.0 0.25 0.25 0.25 0.5 0.5 0.3 0.25 0.25 0.5 >3.0 0.75 0.25 0.25Chlorine mg/l 0.9 nd nd nd nd nd 0.1 0.1 nd nd nd <0.1 0.4 nd ndCopper mg/l nd nd nd 0.1 0.1 nd 0.1 nd 0.1 nd 0.1 0.02 0.1 nd 0.1Phenols mg/l nd 0.1 0.1 0.1 0.1 nd 0.2 nd 0.1 nd 0.1 0.2 0.1 0.1 0.1Table 1-1 (Continued)Summary of Historical Dry Weather Data Site IDBV Creek-1EN-02AEN-02A1EN-02BEN-02CEN-09EN-11EN-13EN-14EN-14AEN-16EN-17EN-18EN-19EN-20EN-21EN-22EN-22AEN-23EN-23AEN-24EN-30EN-312001pH 7.6 7.9 8.3 7.5 7 7.5 4.1 7.5 6.7 7.6 6.9 6.8 4.8 6.9 6.1Temperature 24 28 24 21 20 21 21 24 21 25 21 22 23 24 21Ammonia mg/l 0.8 1.0 0.6 2 0.6 0.5 2 0.3 0.5 0.5 0.4 0.2 0.8 0.8 0.5Detergents mg/l 0.25 3 0.25 0.5 0.5 3 1 0.3 0.5 0.25 0.5 0.25 0.25 0.25 0.25Chlorine mg/l nd 0.4 0.5 0.2 nd nd nd 0.4 nd 0.1 nd nd 0.1 nd ndCopper mg/l nd nd nd nd nd nd nd nd nd nd nd nd nd nd ndPhenols mg/l nd nd nd nd 0.1 nd nd nd nd nd nd nd nd nd nd2002Temp. °C 21 25.5 25 19 19 21 22 20 20 23 19 19.5 20 21pH 7.9 8.4 9.1 8.2 7.5 8.0 4.5 6.9 7.2 7.2 6 7.2 7.0 7.4Turbidity, NTU 21.27 34.22 1.68 0.93 44.48 16.11 0.51 176.0 6.83 26.79 37.95 44.56 27.36 2.78Conductivity, μmhos/cm 1361 4520 3200 5840 4230 2330 1105 7440 4960 4490 4960 3500 3660 5730Detergents, mg/l 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, mg/l 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,mg/l 0.8 0.2 2.5 >40 0.1 0.3 2.5 0.05 < 0.05 < 0.05 2 1.0 < 0.05 1.0Reactive Phosphorus, mg/l 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, mg/l Oil & Grease, mg/l Total Hardness, mg/lCadmium , mg/lCopper, mg/lLead, mg/l Zinc, mg/lDiazinon, μg/LChlorpyrifos, μg/LTotal Coliform, MPN/100mlFecal Coliform, MPN/100mlEnterococcus, MPN/100ml2003Temp. °C 22 23 31 26 21 21 21 22.5 24 24 24 22 23 22 23pH 7.6 7.3 7.1 7.8 7.3 7.2 7.2 6.2 6.9 7.3 7.0 6.7 6.0 7.2 6.9Turbidity, NTU 2.56 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, μmhos/cm 2680 1860 1600 36806040 5290 11,130 66002570 3840 20106210 942035106520Detergents, mg/l 0.13 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, mg/l 0.2 0.8 1.0 0.2 0.2 0.3 0.4 0.6 0.4 0.2 0.2 0.63.50.4 0.4Nitrate,mg/l 0.8 0.3 0.1 0.8 40 0.3 1.5 2.0 0.4 0.8 0.8 1.5 1.5 0.3 0.8Reactive Phosphorus, m0.07 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, mg/l nd nd nd ndOil & Grease, mg/l nd nd nd ndTotal Hardness, mg/l 653 800 1680 979Cadmium , mg/l nd nd nd ndCopper, mg/l nd nd nd ndLead, mg/l nd nd nd ndZinc, mg/l nd nd 0.022 0.022Diazinon, μg/L 0.74 nd nd ndChlorpyrifos, μg/L nd nd nd ndTotal Coliform, MPN/1005,000 8,000 5,000 5,000Fecal Coliform, MPN/1002,300 5,000 3,000 3,000Enterococcus, MPN/100 nd 800 230 80Table 1-1 (Continued)Summary of Historical Dry Weather Data Site IDBV Creek-1EN-02AEN-02A1EN-02BEN-02CEN-09EN-11EN-13EN-14EN-14AEN-16EN-17EN-18EN-19EN-20EN-21EN-22EN-22AEN-23EN-23AEN-24EN-30EN-312004Temp. °C 20.120 25 23 20 21 22.5 22 22.5 23.2 21 22 22 23.4 22pH 8.1 7.7 7.2 9 8.2 7.5 7.8 4.9 7.3 7.7 7.2 7.2 4.2 7.7 6.9Turbidity, NTU 2.05 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, μmhos/cm 2000 920 2080 2500 4050 3150 3140 6580 1650 2560 4450 1120 6250 2640 4620Detergents, mg/l 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, mg/l 0.1 0.8 0.2 0.2 0.1 0.2 0.4 0.8 0.4 0.4 0.6 0.3 2 0.3 0.3Nitrate,mg/l 2.5 2.5 3.75 4 75 3 1.25 3.8 2.5 1.25 1.25 3.75 2.5 1.25 3.75Reactive Phosphorus, mg 0.03 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, mg/l ND ND ND NDOil & Grease, mg/l ND ND ND NDTotal Hardness, mg/l 695 822 1360 1040Cadmium , mg/l ND ND ND NDCopper, mg/l ND ND ND NDLead, mg/l ND ND ND NDZinc, mg/l ND ND ND NDDiazinon, μg/L ND ND ND NDChlorpyrifos, μg/L ND ND ND NDTotal Coliform, MPN/100m17000 13000 30000 17000ecal Coliform, MPN/100m40 300 1100 800Enterococcus, MPN/100m20 140 270 130Table 1-1 (Continued)Summary of Historical Dry Weather Data EN Creek-1 EN Creek-1247.34.4263100.380.30.10.07ndnd1270nd0.014ndndndnd30,00030,00080 EN Creek-1207.410.0626900.250.41.250.16NDND900ND0.028ND0.028NDND220002400500 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 7 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 8 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 13 2.0 SAMPLING LOCATIONS In February of 2002, the City completed a Jurisdictional Urban Runoff Management Plan (JURMP) document that identified 60 primary monitoring stations and 14 alternate stations where data would be collected during the dry weather monitoring program. The additional 14 alternate stations would be monitored if any of the primary stations did not have ponded or flowing water. During the 2006 monitoring program, all 60 primary sampling locations were visited and samples were collected when flowing or ponded water was observed. Only one of the pre-selected sampling locations, Site BV15, was found dry and thus an alternate sampling location, Site BV08, was selected for monitoring. The City also requested an additional study of four creek sites during the dry weather monitoring program in order to gather water quality information on some of the City’s major water bodies. The four creek sites that were selected for this study are: • Agua Hedionda Creek (Site AH Creek-1) • Buena Vista Creek (Site BV Creek-1) • Encinas Creek (Site EN Creek-1) • San Marcos Creek (Site SM Creek-1) This additional study was conducted in 2004 and 2005, and again in 2006; the results are presented in Section 7. Table 2-1 provides the site number, location, conveyance configuration, primary and secondary land uses, hydrologic unit, and Global Positioning Satellite (GPS) coordinates of the sampling locations that were visited. Photographs of sampling locations are included in Appendix A. Sites are categorized according to the respective watershed using the following abbreviations: AH = Agua Hedionda Lagoon, BA = Batiquitos Lagoon (San Marcos Creek), BV = Buena Vista Lagoon, and EN = Encinas Creek. A complete map of the MS4 system, including sampling locations and drainage basins, is included as Figure 1. TABLE 2-1 2006 DRY WEATHER MONITORING STATIONS CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 14 Site ID Locations Conveyance Primary Land Use Secondary Land Use Hydrologic Unit Latitude Longitude Agua Hedionda Lagoon Watershed AH03 East of railroad tracks, south of Chinquapin Avenue, outfall into Agua Hedionda Lagoon Outlet Residential Commercial 904 33.14596 -117.33774 AH04 Behind 5600 Avenida Encinas near railroad tracks Concrete Channel Commercial Industrial 904 33.12646 -117.32769 AH08 Inside Encinas Wastewater Plant, east of plant tower, at south end of open channel- outfall Outlet Commercial Commercial 904 33.13670 -117.33414 AH09 Behind 5115 Building Avenida Encinas Manhole Commercial Industrial 904 33.13181 -117.32989 AH10 West of Avenida Encinas, near Manzano/El Arbol intersection, near railroad tracks Earthen Channel Agricultural Commercial 904 33.12750 -117.32837 AH11 Main line east of I-5, south of Cannon Road, west of the Car Country Carlsbad sign Outlet Commercial Agricultural 904 33.12992 -117.32629 AH12 Concrete channel east of I-5, west of the Ken Grody Ford parking lot off Paseo Del Norte Outlet Commercial Agricultural 904 33.12715 -117.32454 AH13 Concrete channel west of Paseo del Norte, approximately 250 feet north of Pea Soup Anderson’s Outlet Commercial Agricultural 904 33.12558 -117.32269 AH18 South of the Park Drive and Valencia Avenue Intersection Outlet Residential Residential 904 33.14305 -117.31562 AH24 Kelly and Park Drive Intersection Concrete Channel Open Residential 904 33.14657 -117.31071 AH27 Tamarack and Pontiac Ave. intersection, north of Tamarack Concrete Channel Residential Open 904 33.15648 -117.30696 AH28 50 yards east of the La Portalada Drive and Tamarack Avenue intersection, on the north side of Tamarack Ave. Concrete Channel Residential Residential 904 33.15580 -117.31043 TABLE 2-1 2006 DRY WEATHER MONITORING STATIONS CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 15 Site ID Locations Conveyance Primary Land Use Secondary Land Use Hydrologic Unit Latitude Longitude AH30 East of Sierra Morena Avenue, south of Valewood Outlet Open Residential 904 33.16401 -117.31456 AH31 South of Chesnut, east of Sierra Morena Avenue Outlet Open Residential 904 33.16592 -117.31474 AH32 Intersection of Don Arturo and Don Porfirio Drive (in gated community), off of El Camino Real and Rancho Carlsbad Drive intersection Concrete Channel Residential Open 904 33.15163 -117.29086 AH45 Aston Ave., behind building 1812 Acushnet Company, north east of the pond Outlet Commercial Commercial 904 33.13513 -117.29001 AH46 Outfall located at the north of the horse stable on Sunny Creek Rd Outlet Residential Open 904 33.14647 -117.28160 AH59 Sedimentation basin, approximately 1200 feet north of El Fuerte Street Earthen Channel Open Commercial 904 33.13639 -117.25484 AH61 Northeast of 2875 Loker Avenue Manhole Commercial Industrial 904 33.13274 -117.24828 AH63 Tamarack Ave., Hillside Dr., Park Dr., south of Calavo Ct., in east sidewalk Manhole Residential Residential 904 33.15759 -117.30788 AH65 Tamarack Ave., Pontiac Dr., across from South Hampton Rd. Manhole Residential Residential 904 33.15759 -117.29693 Batiquitos Lagoon (San Marcos Creek) Watershed BA02 Down in the sediment basin at the southwest corner of Navigator Cir. and Windrose Cir Outlet Residential Commercial 904 33.09100 -117.30803 BA03 End of Gabbiano on Batiquitos Lagoon Trail Outlet Residential Open 904 33.09381 -117.30159 BA04 In front of 7017 Nutmeg Way Manhole Residential Residential 904 33.10364 -117.30452 TABLE 2-1 2006 DRY WEATHER MONITORING STATIONS CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 16 Site ID Locations Conveyance Primary Land Use Secondary Land Use Hydrologic Unit Latitude Longitude BA06 Batiquitos Drive, midway between Pointsettia Lane and Daisy Avenue Manhole Residential Commercial 904 33.10336 -117.30500 BA07 Northeast of the intersection of Buttercup Road and Seascape Drive Manhole Residential Residential 904 33.10616 -117.30569 BA13 Debris basin outlet to Batiquitos Lagoon, southwest of El Camino Real and Arenal Intersection Outlet Residential Commercial 904 33.09458 -117.26958 BA26 Between 2526 and 2532 Unicornio Street Catch Basin Residential Residential 904 33.10827 -117.25158 BA27 100 feet into the canyon near the El Fuerte and Chorlito Intersection Outlet Residential Open 904 33.11274 -117.24479 BA32 In front of 2927 Luciernaga Street Manhole Residential Open 904 33.10695 -117.24141 BA34 South of Vista Mariana, in La Costa Golf Course Outlet Residential Residential 904 33.09163 -117.25123 BA36 Southeast corner of La Costa Golf Course behind 7525 Gibraltar Street near Round Tree Apartments Outlet Residential Open 904 33.08759 -117.24641 BA40 30 feet southwest of the Melrose Drive and Rancho Santa Fe Road intersection Outlet Commercial Residential 904 33.10542 -117.22543 BA41 (Northern edge) La Costa Canyon Park, in canyon; across from 3015 Pueblo Street Outlet Residential Parks 904 33.08944 -117.24271 BA43 30 yards north of the El Camino Real and Levante St. intersection Outlet Residential Open 904 33.07964 -117.26606 BA47 Rancho Santa Fe Blvd. and Camino Alvaro intersection Manhole Residential Residential 904 33.06908 -117.24709 BA48 500 feet south of the intersection of Camino De Los Coches and Rancho Sante Fe Road Outlet Residential Residential 904 33.07415 -117.23988 TABLE 2-1 2006 DRY WEATHER MONITORING STATIONS CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 17 Site ID Locations Conveyance Primary Land Use Secondary Land Use Hydrologic Unit Latitude Longitude BA49 Northwest of Batiquitos Lagoon, east of Carlsbad Blvd. Manhole Open Residential 904 33.08897 -117.31200 BA51 Alga Rd., east of El Camino Real, between 2035 and 2043 Natural Creek Parks Residential 904 33.10195 -117.26147 BA52 Batiquitos Dr., east of Golden Star Lane, north of street inside detention basin Outlet Parks (Golf Course) Residential 904 33.09338 -117.28979 Buena Vista Lagoon Watershed BV02 East side of State St., south of the Carlsbad Blvd. and State St. intersection Outlet Commercial Industrial 904 33.16566 -117.35410 BV04A East of Buena Vista Lagoon Ecological Reserve, on the east bank Outlet Commercial Open 904 33.17765 -117.34219 BV06 50 feet west of the S. Vista Way Bridge on the south side of Buena Vista Creek Outlet Commercial Residential 904 33.18039 -117.32911 BV08 South bank of Buena Vista Creek, ten yards west of El Camino Real Outlet Commercial Residential 904 33.18050 -117.32729 BV09 50 yards north of the El Camino Real and Carlsbad Village Drive intersection on the center divider Manhole Residential Commercial 904 33.17264 -117.32323 BV10 Southwest corner of the Carlsbad Village Drive and El Camino Real intersection Outlet Residential Commercial 904 33.14146 -117.32301 BV15* Laguna Dr. and State St. intersection, across from 2531 State St. Manhole Commercial Industrial 904 33.16552 -117.35310 BV16 Marron Rd. Monroe St. intersection, across from The Olive Garden Restaurant Manhole Residential Open 904 33.17622 -117.33686 Encinas Creek Watershed EN02A West of 6030 Avenida Encinas east of the Rail Road tracks Outlet Commercial Industrial 904 33.11890 -117.32378 TABLE 2-1 2006 DRY WEATHER MONITORING STATIONS CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 18 Site ID Locations Conveyance Primary Land Use Secondary Land Use Hydrologic Unit Latitude Longitude EN02B Inside Encinas Wastewater Plant Concrete Channel Industrial Commercial 904 33.11591 -117.32017 EN02C North bank of Encinas Creek, underneath I-5 overpass. Access through Wastewater Plant Outlet Industrial Commercial 904 33.11633 -117.31915 EN09 Encinas Creek, south of Palomar Airport Road, on Laurel Tree Road Natural Creek Open Commercial 904 33.12222 -117.30013 EN14 Corner of Palomar Oaks Way and Camino Vida Roble, near 1911 Palomar Oaks Way Manhole Industrial Commercial 904 33.12365 -117.28971 EN14A 30 yards west of 1911 Palomar Oaks Way, in the canyon Outlet Industrial Commercial 904 33.12352 -117.29037 EN18 Behind 1979 Palomar Oaks Way Outlet Commercial Open 904 33.11787 -117.28266 EN19 Beside 1949 Palomar Oaks Way Concrete Channel Commercial Open 904 33.11903 -117.28593 EN20 Across from 1979 Palomar Oaks Way Outlet Commercial Open 904 33.11908 -117.28231 EN21 Camino Vida Roble, midway between Palomar Airport Road and Owens Avenue Manhole Commercial Industrial 904 33.12132 -117.29228 EN23 Northwest corner of Yarrow Drive and Camino Vida Roble intersection Outlet Commercial Industrial 904 33.11935 -117.27332 EN24 Between 2225 and 2265 Camino Vida Roble, in front of the Post Office Catch Basin Industrial Commercial 904 33.11906 -117.27238 EN31 10 yards north of 1925 Palomar Oaks Way, in the canyon Manhole Commercial Industrial 904 33.12226 -117.29144 Notes: * Additional creek study sites 1 Alternate station BV08 was selected to substitute for dry primary monitoring station BV15 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 19 3.0 FIELD AND LABORATORY ANALYTICAL METHODS 3.1 Field Screening Procedures and Methods Field screening techniques consisted of qualitative field observations, flow measurement, and field analyses of selected water quality parameters. Information relating to weather conditions, the amount of time since last rainfall, and the type of storm water conveyance was recorded. Specific observations and results of the field water quality analyses were documented on field data sheets, which are included in Appendix C. The data sheets also serve as a record of the field visit and were completed for every site visit regardless of whether or not samples were collected. Field screening and analyses were conducted according to the following procedures and methods. Qualitative Observations Qualitative field observations were made during each site visit whether or not ponded or flowing water was observed. These observations were intended to provide a general assessment of the site and include variables like odor, water clarity, the presence of floatables, visible deposits, stains, and biological status. Evidence of present or past illicit connections and illegal discharges (IC/ID) to the storm drain system may be ascertained by careful field observations. Each field screening location was photographed to provide additional information and documentation of site conditions. Photos are included in Appendix A. Field Water Quality Analyses At each site with ponded or flowing water, water samples were collected and analyzed in the field for the following constituents: • Specific conductance • Temperature • pH • Turbidity • Surfactants (MBAS)* • Nitrate-N • Ammonia-N • Orthophosphate-P (reactive phosphorus) * Surfactants are also referred to as detergents, specifically with respect to discussion of field test kit results. Due to the importance of surfactants, the City conducted analysis for this parameter in both the field and laboratory. Surfactant concentration was measured using the Methylene Blue Active Substances (MBAS) method. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 20 Flow Measurement Flow measurements can be used to estimate pollutant mass loading, prioritize storm drains for future investigation, and identify significant changes in discharge that may be indicative of an illegal release upstream. Various field methods can be used to estimate the discharge rate. These include measuring the velocity, depth, and width of the flowing water, or recording the amount of time required to fill a bottle of known volume with sample water. The methods that were used to perform the above field analyses, along with the detection limit, range and accuracy of each method, are listed in Table 3-1 at the end of this section. 3.2 Laboratory Analytical Methods In accordance with Order 2001-01, laboratory samples were collected at 15 sites, representing more than 25 percent of the sites where ponded or flowing water was observed. Samples were submitted to EnviroMatrix Analytical, Inc, a California Department of Health Services certified laboratory, for analysis of the following constituents: • Total hardness • Surfactants (MBAS) • Oil and grease • Diazinon and Chlorpyrifos • Cadmium (Dissolved) • Copper (Dissolved) • Lead (Dissolved) • Zinc (Dissolved) • Total Coliform bacteria • Fecal Coliform bacteria • Enterococcus bacteria The methods used to perform each of the above analyses along with method detection limits and holding times are listed in Table 3-2 at the end of this section. 3.3 Quality Assurance and Quality Control (QA/QC) The Quality Assurance/Quality Control (QA/QC) Plan utilized for this project included applying Environmental Protection Agency (EPA) approved test methods for the field and laboratory analysis of water samples, frequent calibration of test equipment, and pre- and post-rinsing of sample collection containers and test vials when necessary. Key components of the QA/QC Plan are described below. 3.3.1 Field Sampling and Analysis QA/QC The pH meters were calibrated periodically with sodium/potassium phosphate, monobasic buffer solutions with pH values equal to 7.00 ± 0.01 and 10.00 ± 0.01 units. The glass electrode tube was kept moist to preserve the meter’s accuracy during field work. The turbidity meter was calibrated and periodically checked for accuracy using standard CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 21 solutions. The conductivity meter was checked periodically with standard solutions and calibrated as necessary. Field sample collection containers were first rinsed with distilled water and then with the sample water before sample collection. Upon completion of sampling at each site, sample collection containers, test vials, and ion-sensitive electrodes were rinsed twice with distilled water. The accuracy of field analytical techniques was assessed at the beginning of the sampling program by analyzing solutions of known concentrations for ammonia, detergents, nitrate, and reactive phosphorus. The results of the assessment are shown in the table below. FIELD ANALYSIS QA/QC RESULTS Date Analyte Known Concentration Field Test Kit Results 7/24/06 Ammonia 1.0 mg/L 1.0 mg/L 7/24/06 Detergents 2.0 mg/L 2.0 mg/L 7/24/06 Nitrate 1.0 mg/L 1.0 mg/L 7/24/06 Reactive Phosphorus 3.0 mg/L 3.0 mg/L 3.3.2 Laboratory Sampling and Analysis QA/QC Samples for laboratory analysis were collected concurrently with field samples and utilized the same sampling procedures. Pre-sterilized sample bottles were obtained from EnviroMatrix Analytical Laboratory, so they did not require rinsing with sample water prior to sample collection. After sample collection, all laboratory samples were kept in a cooler on ice until picked up by the lab. Strict chain of custody procedures were followed, and samples were delivered and analyzed within the appropriate holding times, as listed in Table 3-2 below. Completed chain of custody forms are included in Appendix B. 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 (described below) 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 concentration, evidence of a sewage release, etc.), then an immediate source identification investigation was initiated. Sites that exceeded numeric action levels but were not perceived as an immediate threat to water quality were re-sampled within 24 hours. A source investigation was conducted thereafter if elevated concentrations persisted; the results of those investigations are included in Section 8 of this report. Recommendations based on these investigations are included in Section 9. If elevated levels of pollutants were detected in the laboratory analyses, a comprehensive follow-up investigation including re-sampling was conducted. 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; and (3) best CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 22 professional judgment. All three approaches are described in detail below and presented in Table 3-3. Numeric Action Levels Numeric action levels were used as the primary approach for interpreting pH, orthophosphate, nitrate, ammonia, methylene blue active substances (MBAS), oil and grease, diazinon, chlorpyrifos, total coliform, fecal coliform, and enterococcus levels (Table 3-3). If pH, orthophosphate, nitrate, ammonia, or MBAS was observed above the numeric action level, a follow-up investigation was conducted within 24 hours to investigate the source unless best professional judgment indicated otherwise. If oil and grease, diazinon, chlorpyrifos, total coliform, fecal coliform, or enterococcus laboratory analytical results exceeded numeric action levels, then source investigations were conducted. California Toxics Rule The California Toxics Rule (CTR) 1-hour criteria were used to determine appropriate action levels for dissolved trace metals cadmium, copper, lead, and zinc. The CTR equations provide benchmarks for each dissolved metal based on the measured total hardness value of the water sample. More information on the CTR can be found at http://www.epa.gov/region09/water/ctr. Best Professional Judgment Best professional judgment was utilized as the primary approach for interpreting conductivity, turbidity, and water temperature and as the secondary approach for interpreting the results of all other field and laboratory analyses. Best professional judgment may conclude that results that exceed action levels or are statistical outliers are likely the result of natural or background factors. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 23 TABLE 3-1 FIELD ANALYTICAL METHODS Parameter Method Reporting Limit Range Accuracy Specific conductance Hanna Instruments HI 991301 Portable pH/EC/TDS/Temperature Meter** 0.01 mS/cm 0.01 – 20.00 mS/cm ± 2% of functional sensitivity1 Temperature Hanna Instruments HI 991301 Portable pH/EC/TDS/Temperature Meter** 0.1ºC 0.0ºC – 60.0ºC ± 0.5ºC pH Hanna Instruments HI 991301 Portable pH/EC/TDS/Temperature Meter** 0.01 0.00 – 14.00 ± 0.01 pH Turbidity Hanna Instruments HI 93703-11 Portable Turbidity Meter** 0.01 NTU 0.01 – 50.00 NTU and 50 – 1000 NTU ± 0.5 NTU or 5% of reading2 Surfactants CHEMetrics CHEMets Kit (K-9400) Methylene Blue Active Substances 0.13 mg/L 0.13 mg/L – 3.0 mg/L* ± 0.13 & ± 0.5 mg/L3 Nitrate-N CHEMetrics CHEMets Kit (K-6902D) Cadmium reduction 1.25 mg/L 1.25 mg/L - 150 mg/L* ± 1.25 & ± 6.25 mg/L4 Ammonia-N CHEMetrics CHEMets Kit (K-1510) Nesslerization 0.05 mg/L 0.05 mg/L – 10.0 mg/L*± 0.05 & ± 0.5 mg/L5 Orthophosphate-P CHEMetrics CHEMets Kit (K-8510) Stannous chloride chemistry6 0.016 mg/L 0.016 mg/L – 3.26 mg/L* ± 0.016 & ± 0.16 mg/L7 Notes: 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. 2 ± 0.5 NTU or 5% of reading (whichever is greater). 3 ± 0.13 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. 4 ± 1.25 for the range of 0.0 to 25.0 mg/L, ± 6.25 for the range of 25.0 to 125.0 mg/L. 5 ± 0.05 for the range of 0.0 to 1.0 mg/L, ± 0.5 for the range of 1.0 to 10.0 mg/L. 6 This method determines the concentration of orthophosphate in mg/L PO4. To determine the amount of orthophosphate phosphorus (PO4-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 detection limit for orthophosphate is 0.05mg/L, however, the detection limit for orthophosphate phosphorus is lowered due to the conversion. 7 ± 0.05 for the range of 0.0 to 1.0 mg/L, ± 0.5 for the range of 1.0 to 10.0 mg/L. *Extended ranges in chemical analyses can be achieved through dilutions. Accuracies decrease proportionally with further dilutions. **Reporting limit, range, and accuracy information taken from Hanna Instruments manuals, available online at www.hannainst.com CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 24 TABLE 3-2 LABORATORY ANALYTICAL METHODS Analyte Analytical Method Method Reporting Limit Maximum Holding Time** Surfactants (MBAS) SM 5540 C 0.5 mg/L 48 hours Oil and grease EPA 1664 5 mg/L 28 days Total Hardness EPA 200.7 10 mg/L 14 days Cadmium EPA 6010, 6020, 200.8 0.005 mg/L 6 months Copper EPA 6010, 6020 200.8 0.005 mg/L 6 months Lead EPA 6010, 6020 200.8 0.005 mg/L 6 months Zinc EPA 6010, 6020, 200.8 0.020 mg/L 6 months Diazinon EPA 8141A 0.05 µg/L 7 days Chlorpyrifos EPA 8141A 0.05 µg/L 7 days Total Coliform SM 9221 20* – 1,600,000 MPN/100 mL 6 hours Fecal Coliform SM 9221 20* – 160,000 MPN/100 mL 6 hours Enterococcus SM 9230 20* – 160,000 MPN/100 mL 6 hours Notes: *For the Dry Weather Program for D-MAX Engineering, Inc., EnviroMatrix Analytical, Inc. (EMA) performs standard dilutions for total coliforms to quantify from 20-1,600,000 MPN/100 mL. For fecal coliforms and enterococcus, 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 most probable number index table (MPN) 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 how the standard tubes set up for the sample is set up. ** Maximum Holding Time values listed here apply to samples collected and preserved in accordance with the QA/QC procedures listed in Section 3.3.2 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 25 TABLE 3-3 ACTION LEVELS FOR FIELD SCREENING AND LABORATORY PARAMETERS Field Screening Analytes Action Levels1 Source/ Notes pH <6.5 or >9.0 Basin Plan, with allowance for elevated pH due to excessive photosynthesis. Elevated pH is especially problematic in combination with high ammonia. Orthophosphate-P (mg/L) 2.0 USEPA Multi-sector General Permit Nitrate-N (mg/L) 10.0 Basin Plan, and drinking water standards Ammonia-N (mg/L) 1.0 Based on Workgroup experience. May also consider unionized ammonia fraction. Turbidity (NTU)2 Best Professional Judgment WQOs relevant to inland surface waters are not available. Base judgment on channel type and bottom, time since last rain, background levels, and most importantly visual observation (e.g. unusual colors and lack of clarity), and unusual odors. Temperature (oC) Best Professional Judgment Base judgment on season, air temperature, channel type, shading, etc. Conductivity (mS/cm) Best Professional Judgment Values > 5.00 mS/ cm may indicate IC/ID; however, EC 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. Knowledge of area background conditions is important. Values <0.75 may indicate excessive potable water discharge or flushing. Laboratory Analytes Action Levels Source/ Notes Surfactants (MBAS) (mg/L) 1.0 Basin Plan, with allowance based on Workgroup field experience and possible field reagent interferences. Oil and Grease (mg/L) 15 USEPA 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 Chlorpyrifos (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. Dissolved Cadmium California Toxic Rule Dissolved Copper California Toxic Rule Dissolved Lead California Toxic Rule Dissolved Zinc California Toxic Rule Use California Toxics Rule Table, 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. Total Coliform (MPN/ 100 mL) 50,000 Fecal Coliform (MPN/ 100 mL) 20,000 Enterococcus (MPN/ 100 mL) 10,000 Bacteria levels in many storm drains are likely to exceed public health guidance criteria. Use confidence interval test and best professional judgment to identify conveyances for source ID. Notes 1The 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. Factors that should be considered include within-site and between-site sample variability. °C degrees Celsius μmhos/cm micromhos per centimeter mg/L milligram per liter IC/ID illegal connection/illicit discharge MBAS methylene blue active substances MPN/100 mL most probable number (of colony forming units) per 100 milliliters NTU nephelometric turbidity unit ppb parts per billion USEPA United States Environment Protection Agency WQO Water Quality Objectives CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 26 4.0 FIELD SCREENING RESULTS 4.1 Qualitative Observations Qualitative observations are a routine and important part of the field screening program. Weather conditions were recorded at each site and any evidence of dry weather flows was documented. Visual observations of the sample water and the vicinity of the sampling location such as odor, color, clarity, floatable materials, vegetation, and biological organisms were also recorded. Observations are summarized below and presented in Table 4-1. Light Conditions The weather condition was most often sunny during field screening. Partly cloudy and overcast conditions were also observed. Odor Most sites visited during the 2006 field screening program had no observable odors. However, AH31 had a slightly musty odor, and Site BV08 smelled of rotten eggs. Color Water samples taken from the majority of the sites were colorless. However, 17 sites had water with a yellow tint, and samples taken from two sites were brown in color. Clarity The majority of the water samples collected from the visited sites were clear, with negligible suspended particles observed. At eight of the sites water samples were slightly cloudy. The water sample taken at Site BA06 was observed to be initially opaque, but was clear at the time of the follow-up visit for the site. Floatable Materials During routine field screening visits, 17 of the 60 were observed to have trash in or around the sampling location. The amount of trash encountered at these sites was relatively small, and generally included materials such as paper, plastics, Styrofoam, aluminum cans, and glass bottles. A total of 12 sites were observed to have bubbles on the water surface, and foam was observed at site EN14A. Vegetation Vegetative growth ranged from no growth to naturally vegetated riparian areas to excessive amounts of vegetation. Five sites had excessive vegetation that was interfering with or completely blocking flow. 16 sites had normal vegetation, and six sites had limited vegetation. No growth was observed at the rest of sites, which included manholes and catch basins, which receive no sunlight, or concrete channels, which usually have no soil. Biology Insects were observed at 30 sites during field screening. 25 of the sites exposed to sunlight had algal growth, which indicates that water flow is persistent at the site. Several of the sampling locations were also observed with other biological organisms such as snails, crawdads and fish. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 27 Deposits Fine particulate deposition was observed at approximately 29 sites, while nine sites had course and fine particulate deposition. The remaining sites had no observable deposits of any kind. TABLE 4-1 SUMMARY OF FIELD OBSERVATIONS CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 28 Site Date Time Light Odor Color Clarity Floatables Deposits Vegetation Biology No. Conditions AH03 7/26/06 11:35 Sunny None None Clear Trash, Bubbles None Limited Algae AH04 8/10/06 16:50 Sunny None Yellow Clear sheen None None Insects, Algae, Snails AH04(follow up) 8/11/06 8:05 Sunny None Yellow Clear None None None Insects, Algae, Snails AH08 8/8/06 9:20 Sunny None None Clear Trash None Normal Insects AH09 8/9/06 15:45 Partly Cloudy None None Slightly Cloudy None Fine Particulates None None AH10 7/28/06 12:30 Overcast None None Clear None Fine Particulates Normal Insects, Algae AH10(follow up) 8/3/06 9:10 Overcast None None Clear Bubbles Fine Particulates Normal Insects, Algae AH11 8/10/06 10:50 Sunny None Yellow Clear Trash Fine Particulates Excessive Insects AH12 8/12/06 11:25 Sunny None Yellow Clear Trash None Limited None AH12(follow-up) 8/11/06 10:45 Sunny None Yellow Clear Trash None Limited None AH13 8/10/06 9:45 Sunny None None Clear None Fine Particulates Limited Insects, Algae, Snails AH13 (follow-up) 8/11/06 10:05 Sunny None None Clear None Fine Particulates Limited Insects, Algae, Snails AH18 7/27/06 15:20 Partly Cloudy None None Clear Trash Fine Particulates Excessive Insects AH18(follow-up) 7/28/06 8:45 Partly Cloudy None None Clear Trash Fine Particulates Excessive Insects AH24 7/27/06 12:20 Sunny None None Clear None Coarse & Fine Normal Insects, Algae, Snails/Fish AH27 7/28/06 14:45 Sunny None None Clear None Coarse & Fine Limited Insects, Algae AH28 7/28/06 15:30 Sunny None Yellow Clear None Fine Particulates Limited Insects, Algae, Snails, Fish AH30 7/27/06 14:40 Partly Cloudy None Yellow Clear Trash Fine Particulates Excessive Insects, Algae AH31 7/26/06 15:25 Partly Cloudy Musty Yellow Clear Trash None Excessive Insects TABLE 4-1 SUMMARY OF DRY WEATHER FIELD OBSERVATIONS (CONTINUED) CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 29 Site Date Time Light Odor Color Clarity Floatables Deposits Vegetation Biology No. Conditions AH31(follow-up) 7/27/06 9:15 Sunny Musty Yellow Clear Trash None Excessive Insects AH32 7/26/06 16:00 Partly Cloudy None None Clear None Fine Particulates Normal Insects, Algae AH45 7/28/06 11:40 Partly Cloudy None Yellow Slightly Cloudy Trash Fine Particulates Normal Insects, Algae AH46 7/27/06 10:40 Sunny None None Clear None Fine Particulates Excessive Algae, Snails AH46(follow-up) 7/28/06 9:15 Partly Cloudy None None Clear None Fine Particulates Excessive Algae, Snails AH59 7/27/06 16:15 Sunny None None Clear None Fine Particulates Normal Insects AH61 8/11/06 9:10 Sunny None Yellow Slightly Cloudy None Coarse & Fine None None AH63 8/9/06 16:25 Partly Cloudy None None Clear None None None None AH65 8/9/06 16:55 Partly Cloudy None None Clear None None None None BA02 8/10/06 14:45 Sunny None None Clear None None None Algae BA03 8/11/06 12:15 Partly Cloudy None None Clear Bubbles None Normal Algae BA04 8/10/06 15:20 Sunny None None Clear None None None None BA06 8/9/06 12:40 Sunny None Brown Opaque Bubbles Fine Particulates None None BA06(follow-up) 8/10/06 15:45 Sunny None None Clear None Fine Particulates None None BA07 8/11/06 13:45 Sunny None Yellow Clear None Coarse & Fine None None BA07(follow-up) 8/11/06 17:45 Partly Cloudy None Yellow Clear None Coarse & Fine None None BA13 8/9/06 11:45 Sunny None None Slightly Cloudy None Fine Particulates None Larvae BA26 8/11/06 14:45 Sunny None None Clear None Fine Particulates None None BA27 8/11/06 13:50 Sunny None None Clear Trash Fine Particulates None Insects, Algae, Snails TABLE 4-1 SUMMARY OF DRY WEATHER FIELD OBSERVATIONS (CONTINUED) CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 30 Site Date Time Light Odor Color Clarity Floatables Deposits Vegetation Biology No. Conditions BA32 8/11/06 13:10 Sunny None None Clear None None None None BA32(follow-up) 8/11/06 18:10 Sunny None None Clear None None None None BA34 8/11/06 12:20 Partly Cloudy None None Clear Trash Fine Particulates None Insects, Algae, Snails BA36 8/7/06 9:35 Partly Cloudy None None Clear Bubbles Fine Particulates None Insects, Algae BA40 7/28/06 10:05 Partly Cloudy None None Clear Trash Fine Particulates Limited Insects, Algae BA41 8/11/06 11:10 Sunny None None Clear None Coarse & Fine Normal Insects, Algae BA43 8/11/06 15:30 Sunny None None Clear Trash Coarse & Fine Normal Insects BA47 8/11/06 10:00 Sunny None None Clear Bubbles Coarse & Fine None None BA47(follow-up) 8/11/06 16:10 Sunny None None Clear None Coarse & Fine None None BA48 8/11/06 16:40 Sunny None None Clear Bubbles None Normal Algae BA49 8/10/06 14:00 Sunny None None Clear None None None None BA51 8/7/06 8:50 Partly Cloudy None None Clear Trash Fine Particulates Normal Insects, Algae BA52 8/10/06 16:15 Sunny None None Clear None None None None BV02 7/26/06 9:20 Partly Cloudy None None Clear Trash, Bubbles Fine Particulates Normal Insects BV04A 7/26/06 8:45 Overcast None None Clear None None None Algae BV04A (follow-up) 7/27/06 8:30 Sunny None None Clear None None None Algae BV06 7/25/06 11:15 Overcast None None Clear None Fine Particulates Normal Insects BV08* 7/25/06 14:30 Overcast Rotten Eggs None Clear Trash Fine Particulates Normal Algae TABLE 4-1 SUMMARY OF DRY WEATHER FIELD OBSERVATIONS (CONTINUED) CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 31 Site Date Time Light Odor Color Clarity Floatables Deposits Vegetation Biology No. Conditions BV08(follow-up) 7/26/06 14:00 Overcast Rotten Eggs None Clear Trash Fine Particulates Normal Algae BV09 7/25/06 13:30 Overcast None None Clear None None None None BV10 7/25/06 15:25 Overcast None Yellow Clear None Fine Particulates None Insects, Algae BV15* 7/25/06 14:00 Overcast ns ns ns ns ns None None BV16 7/25/06 10:35 Overcast None Yellow Clear None Fine Particulates None None EN02A 8/9/06 9:30 Sunny None Brown Slightly Cloudy Bubbles Fine Particulates Normal Insects EN02B 8/8/06 10:30 Sunny None Yellow Clear None Fine Particulates None Insects, Snails EN02C 8/8/06 11:00 Sunny None None Clear None None None None EN02C(follow up) 8/9/06 8:50 Sunny None None Clear None None None None EN09 8/9/06 10:40 Sunny None None Clear None Fine Particulates Normal Insects, Fish, Crawfish EN14 8/8/06 16:20 Sunny None Yellow Slightly Cloudy None Fine Particulates None None EN14(follow up) 8/9/06 14:45 Sunny None Yellow Slightly Cloudy None Fine Particulates None None EN14A 8/9/06 15:00 Sunny None None Slightly Cloudy Trash, Bubbles/Foam None None None EN14A(follow up) 8/10/06 8:35 Sunny None None Slightly Cloudy Trash, Bubbles/Foam None None None EN18 8/7/06 15:00 Sunny None Yellow Slightly Cloudy None Coarse & Fine Normal Insects EN19 8/8/06 12:15 Sunny None None Clear None None None Insects, Algae, Snails, Fish EN20 8/7/06 14:10 Sunny None Yellow Clear Trash Fine Particulates None Insects, Algae EN21 8/7/06 16:00 Sunny None Yellow Clear None None None None EN21(follow up) 8/8/06 14:05 Sunny None Yellow Clear None None None None TABLE 4-1 SUMMARY OF DRY WEATHER FIELD OBSERVATIONS (CONTINUED) CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 32 Site Date Time Light Odor Color Clarity Floatables Deposits Vegetation Biology No. Conditions EN23 8/10/06 9:05 Sunny None None Clear Bubbles Coarse & Fine None None EN24 8/7/06 15:40 Sunny None Yellow Clear Bubbles None None None EN31 8/8/06 15:30 Sunny None None Clear None None None None EN31(follow up) 8/9/06 14:30 Sunny None None Clear None None None None Notes: ns = not sampled (dry site) * Site BV08 was substituted for dry Site BV15 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 33 4.2 Field Analytical Results Field analyses were conducted at all sites with ponded or flowing water. Chemical analyses were conducted using CHEMetrics field test kits; pH, conductivity, and temperature were measured using a Hanna Instruments Portable pH/EC/TDS/Temperature Meter (HI 991301); and turbidity was measured using a Hanna Instruments Portable Turbidity Meter (HI 93203-11). A summary of the field analytical results is presented in Table 4-2. Table 4-3 presents the results of all field analyses conducted at the sampled sites. Graphs of each parameter analyzed and appropriate action levels for follow-up investigations are included at the end of this section. TABLE 4-2 FIELD ANALYSIS STATISTICAL SUMMARY Parameter (units) Maximum Minimum Average Median Flow Rate (gpm) 333 <1 19.0 3.0 Temperature (ºC) 33.0 21.0 24.9 24.6 pH 9.8 5.2 7.6 7.6 Turbidity (NTU) 164 0.01 13.4 6.4 Conductivity (mS/cm) 15.19 0.8 3.7 2.65 Ammonia (mg/L NH3-N) >10 0.1 0.8 0.3 Surfactants (mg/L MBAS) 1.5 0.25 0.5 0.5 Nitrate (mg/L NO3-N) 50 1.25 7.3 2.5 Orthophosphate Phosphorus (mg/L PO4-P) >3.0 0.03 0.3 0.2 Flow rates at sites with measurable flow ranged from less than 1.0 gpm to 333 gpm, with an average of 19.0 gpm and a median of 3.0 gpm, as shown in Table 4-2. The highest flow rate was measured at Site AH46. Water temperature is an important physical parameter because it is needed to assess the significance of other parameters such as pH and conductivity. Furthermore, the aquatic habitat must remain within a certain temperature range in order to sustain sensitive aquatic life. Water temperature was measured in the field immediately upon sample collection at each site with ponded or flowing water. Temperature readings ranged from 21.0 to 33.0 degrees Celsius (°C), with an average of 24.9°C and a median of 24.6°C. The maximum water temperature of 33.0°C was recorded at Site AH04, in the afternoon. The minimum water temperature of 21.0°C was measured in the morning at Site AH08. Graph 4-1 presents the results of temperature readings at all sites. The pH is an expression of the acidity or alkalinity of a water sample.. This is a critical factor in determining water quality, as the pH of an aquatic system will drive a multitude of chemical reactions, including the availability of nutrients and the solubility of chemical substances, especially heavy metals. The pH values ranged from 5.2 to 9.8, with both an average and median of 7.6. The highest pH reading of 9.8 was observed at AH04 in the afternoon, when the highest temperature was observed. The lowest pH during routine field screening was 5.2 recorded at BA47 during a follow-up visit. Graph 4-2 presents the results of pH readings at all sites. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 34 Turbidity indicates 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 elevate water temperatures. Turbidity measurements ranged from 0.01 to 164 NTU, with an average of 13.4 NTU and a median of 6.4 NTU. The highest turbidity reading of 164 NTU was recorded at Site BA06, and the lowest measurement of 0.01 NTU was observed at AH32. Graph 4-3 presents the results of turbidity measurements at all sites. Conductivity values indicate the total concentration of ions in an aquatic system and the ability of water to conduct electricity. This parameter can be used to assess the mineral content of water or to help determine the presence of dissolved pollutants. Conductivity readings ranged from 0.8 to 15.19 mS/cm, with an average of 3.7 mS/cm and a median of 2.65 mS/cm. The highest conductivity measurement of 15.19 mS/cm was recorded at Site BV04A, while the lowest reading of 0.8 mS/cm was taken at Site AH27. Graph 4-4 illustrates the results of conductivity measurements at all sites. Ammonia Nitrogen is a common 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 become toxic to fish and other organisms. Ammonia concentrations measured in sampled water ranged from 0.1 to greater than 10 mg/L NH3-N, with an average of 0.8 mg/L and a median of 0.4 mg/L. The highest ammonia concentration was observed at Site EN14, while ten sites had an ammonia concentration of 0.1 mg/L. Graph 4-5 shows the results of the ammonia analyses at all sampling locations. Surfactant concentrations in water samples often indicate illegal discharges from industrial, commercial, or residential sources. Pollution resulting from surfactants alters the surface tension of water and disrupts the breathing mechanisms of fish gills and other aquatic organisms. During field analysis, surfactant concentrations ranged from 0.25 mg/L to 1.5 mg/L, with an average and a median of 0.5 mg/L. The highest concentration of 1.5 mg/L was found at Site BV08, while nearly one third of the sites had a detergents concentration of 0.25 mg/L. Graph 4-6 reflects the results of the surfactants analyses at all sampling locations. Nitrate Nitrogen is a common indicator of nutrient pollution from agricultural or household fertilizer runoff. Nitrate pollution can cause excessive algal growth, which can later cause the suffocation of fish and other aquatic organisms by depleting oxygen from the water during decomposition. Measured nitrate concentrations ranged from 1.25 to 50 mg/L NO3- N, with an average of 7.3 mg/L and a median of 2.5 mg/L. The highest nitrate concentration of 50 mg/L was observed at Sites EN02C and AH13 during both visits to both sites. The lowest measurable amount of nitrate, of 1.25 mg/L, was recorded at nearly one third of the sites. Graph 4-7 presents the results of the nitrate analyses at all sampling locations. Orthophosphate Phosphorus, also known as reactive phosphorus, is also a common indicator of nutrient pollution from agricultural or household fertilizer runoff. Similar to nitrate, phosphate pollution can cause nutrient enrichment (eutrophication), which stimulates algal growth and eventually lowers aquatic dissolved oxygen to levels that are CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 35 dangerous for aquatic life. Because it is commonly the limiting nutrient in plant growth, even low levels of phosphate can cause significant algal growth. During the field analysis, orthophosphate was measured in mg/L PO4 and converted into mg/L orthophosphate-P using a conversion factor of 0.326. This process is explained above in Note 6 of Table 3-1. Reactive phosphorus was measured at concentrations ranging from not detected to greater than 3.0 mg/L PO4-P, with an average of 0.4 mg/L and a median of 0.2 mg/L. Site EN18 had no measurable orthophosphate concentration, while Site EN02C had a reactive phosphorus concentration greater than 3.0 mg/L during the initial visit to the site. Graph 4-8 illustrates the results of orthophosphate-P at all sampling locations. TABLE 4-3 SUMMARY OF FIELD ANALYTICAL RESULTS CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 36 Site Date Time Flow Temp. pH Turbidity Conductivity Detergents Ammonia Nitrate Orthophosphate Phosphorus gpm °C NTU mS/cm mg/L MBS mg/L NH3-N mg/L NO3-N mg/L PO4-P AH03 7/26/06 11:35 17 24.5 8.1 5.43 1.92 0.25 0.1 7.5 0.27 AH04 8/10/06 16:50 Ponded 33.0 9.8 16.63 1.63 0.75 0.4 1.25 0.07 AH04(follow up) 8/11/06 8:05 Ponded23.0 8.5 na 1.60 na na na na AH08 8/8/06 9:20 16 21.0 7.9 2.79 1.47 0.5 0.2 6.75 0.13 AH09 8/9/06 15:45 Ponded 26.3 7.7 25.93 1.00 0.5 0.4 1.25 0.49 AH10 7/28/06 12:30 10 29.3 7.8 12.77 2.33 0.5 0.2 30 0.07 AH10(follow up) 8/3/06 9:10 10 23.3 7.5 na 2.23 na na 30 na AH11 8/10/06 10:50 Ponded 23.6 7.7 3.46 0.87 0.5 0.6 2.5 0.33 AH12 8/10/06 11:25 2 24.7 8.0 2.94 2.03 0.75 0.3 25 0.26 AH12(follow-up) 8/11/06 10:45 2 25.3 8.3 na 1.76 na na 12.5 na AH13 8/10/06 9:45 10 22.4 7.6 0.93 2.29 0.5 0.1 50 0.07 AH13 (follow-up) 8/11/06 10:05 8 22.5 7.5 na 2.28 na na 50 na AH18 7/27/06 15:20 1 27.7 7.5 13.55 3.54 0.25 1.5 1.25 0.82 AH18(follow-up) 7/28/06 8:45 1 26.1 7.5 na 2.43 na 0.8 na na AH24 7/27/06 12:20 10 27.9 7.3 2.91 5.27 0.5 0.4 2.5 0.03 AH27 7/28/06 14:45 1 27.7 8.4 12.32 0.80 0.25 0.2 1.25 0.07 AH28 7/28/06 15:30 1 30.5 7.6 7.19 4.26 0.5 0.3 1.25 0.07 AH30 7/27/06 14:40 3 26.6 7.6 2.91 1.76 0.25 0.4 3.75 0.33 AH31 7/26/06 15:25 Ponded 25.0 7.3 13.7 1.26 0.75 2.5 2.5 1.10 AH31(follow-up) 7/27/06 9:15 Ponded24.6 7.3 na 1.32 na 2.5 na na AH32 7/26/06 16:00 62 28.9 8.1 0.01 2.94 0.25 0.1 1.25 0.03 AH45 7/28/06 11:40 15 28.7 7.6 23.2 2.78 0.5 0.4 3.75 0.1 AH46 7/27/06 10:40 10 23.9 7.2 6.56 3.57 0.5 1.5 5 0.13 AH46(follow-up) 7/28/06 9:15 10 23.2 7.4 na 6.54 na 0.5 na na AH59 7/27/06 16:15 1 26.5 7.7 10.4 1.58 0.25 0.2 1.25 0.07 AH61 8/11/06 9:10 1 25.8 7.4 27.48 2.92 0.25 0.4 2.5 0.13 AH63 8/9/06 16:25 1 24.0 8.8 2.17 2.20 0.5 0.1 2.5 0.49 AH65 8/9/06 16:55 1 25.0 7.9 3.21 1.90 0.25 0.2 2.5 0.65 TABLE 4-3 SUMMARY OF FIELD ANALYTICAL RESULTS (CONTINUED) CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 37 Site Date Time Flow Temp. pH Turbidity Conductivity Detergents Ammonia Nitrate Orthophosphate Phosphorus gpm °C NTU mS/cm mg/L MBS mg/L NH3-N mg/L NO3-N mg/L PO4-P BA02 8/10/06 14:45 10 24.1 7.9 2.37 1.63 0.25 0.1 3.75 0.33 BA03 8/11/06 12:15 Ponded 25.8 8.6 4.25 2.44 0.25 0.2 3.75 0.26 BA04 8/10/06 15:20 3 26.6 7.2 11.12 2.98 0.25 0.2 3.75 0.20 BA06 8/9/06 12:40 8 26.4 7.6 164 1.70 0.25 0.3 2.5 0.13 BA06(follow-up) 8/10/06 15:45 2 26.5 7.5 19.33 2.56 na na na na BA07 8/11/06 13:45 2 24.6 8.6 16.15 1.95 0.75 4.0 2.5 1.30 BA07(follow-up) 8/11/06 17:45 1 24.2 7.9 na 1.76 na 0.4 na na BA13 8/9/06 11:45 10 23.3 7.8 35.45 10.92 0.75 0.4 6.75 0.20 BA26 8/11/06 14:45 3 25.7 7.8 8.52 6.40 0.63 0.1 1.25 0.07 BA27 8/11/06 13:50 3 23.7 7.5 7.48 6.19 0.50 0.1 2.5 0.07 BA32 8/11/06 13:10 2 25.5 7.6 1.42 1.62 0.25 0.9 2.5 2.28 BA32(follow-up) 8/11/06 18:10 2 25.9 7.7 na 1.08 na 0.3 na 0.16 BA34 8/11/06 12:20 2 23.0 8.2 3.50 5.67 0.25 0.2 2.5 0.26 BA36 8/7/06 9:35 8 22.3 8.1 3.55 6.89 0.50 0.2 1.25 0.07 BA40 7/28/06 10:05 16 25.3 7.5 1.04 2.85 0.25 0.3 1.25 0.23 BA41 8/11/06 11:10 10 25.5 8.6 2.43 3.98 0.75 0.2 1.25 0.98 BA43 8/11/06 15:30 5 24.5 8.3 4.09 2.69 0.50 0.8 1.25 0.49 BA47 8/11/06 10:00 8 26.0 5.6 24.82 9.98 0.75 0.4 2.5 0.49 BA47(follow-up) 8/11/06 16:10 5 23.6 5.2 na 9.71 na na na na BA48 8/11/06 16:40 2 25.4 8.3 7.34 3.97 0.75 0.9 1.75 0.13 BA49 8/10/06 14:00 20 23.1 7.6 1.24 2.24 0.25 0.1 3.75 0.07 BA51 8/7/06 8:50 249 21.0 7.8 2.35 5.63 0.50 0.1 1.25 0.03 BA52 8/10/06 16:15 10 23.9 7.3 3.96 4.41 0.50 0.6 2.5 0.63 BV02 7/26/06 9:20 2 23.3 7.5 5.29 1.64 0.50 0.8 6.25 0.82 BV04A 7/26/06 8:45 1 26.5 6.8 1.10 15.12 0.8 0.6 10 0.03 BV04A(follow-up) 7/27/06 8:30 1 27.4 6.6 na 15.19 na na 10 na BV06 7/25/06 11:15 2 24.5 7.5 1.45 2.62 0.25 0.1 3.75 0.20 BV08* 7/25/06 14:30 3 24.9 7.5 11.16 2.23 1.5 0.6 5 0.33 TABLE 4-3 SUMMARY OF FIELD ANALYTICAL RESULTS (CONTINUED) CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 38 Site Date Time Flow Temp. pH Turbidity Conductivity Detergents Ammonia Nitrate Orthophosphate Phosphorus gpm °C NTU mS/cm mg/L MBS mg/L NH3-N mg/L NO3-N mg/L PO4-P BV08(follow-up) 7/26/06 14:00 3 25.5 7.6 na 4.75 1.5 na na na BV09 7/25/06 13:30 2 24.2 7.9 3.11 3.98 0.5 0.2 3.75 0.27 BV10 7/25/06 15:25 2 23.9 7.5 2.75 4.01 0.5 0.2 5 0.27 BV15* 7/25/06 14:00 Dry ns ns ns ns ns ns ns ns BV16 7/25/06 10:35 3 25.0 8.1 3.00 2.18 0.5 0.2 2.5 0.65 EN02A 8/9/06 9:30 Ponded 23.4 7.8 41.25 1.06 0.25 0.6 1.25 0.26 EN02B 8/8/06 10:30 15 26.7 8.9 3.38 2.69 0.5 0.4 2.5 0.07 EN02C 8/8/06 11:00 2 21.3 7.9 1.52 4.92 1.0 0.2 50 >3.0 EN02C(follow up) 8/9/06 8:50 2 21.0 8.1 na 5.09 1.0 na 50 0.98 EN09 8/9/06 10:40 10 22.3 7.4 10.82 4.83 0.5 0.3 2.5 0.03 EN14 8/8/06 16:20 3 24.5 7.8 76 2.49 0.25 >10 3.75 1.10 EN14(follow up) 8/9/06 14:45 3 24.3 7.9 15.93 1.71 na 2.5 na na EN14A 8/9/06 15:00 2 25.1 5.4 26.97 4.11 0.5 6.5 2.5 0.13 EN14A(follow up) 8/10/06 8:35 2 22.4 6.6 na 2.20 na 10 na na EN18 8/7/06 15:00 8 25.0 6.7 34.83 6.23 0.75 0.8 2.5 nd EN19 8/8/06 12:15 28 25.1 7.5 6.05 5.12 0.75 0.4 2.5 0.07 EN20 8/7/06 14:10 8 24.6 7.0 14.85 6.04 0.75 0.8 1.25 0.07 EN21 8/7/06 16:00 1 23.8 7.1 6.21 1.17 0.75 0.8 15 0.07 EN21(follow up) 8/8/06 14:05 1 23.5 7.3 na 1.19 na na 2.5 na EN23 8/10/06 9:05 1 23.4 6.9 9.30 3.34 0.5 0.6 2.5 0.26 EN24 8/7/06 15:40 1 24.5 6.7 27.33 3.65 0.5 0.6 1.25 0.07 EN31 8/8/06 15:30 2 24.0 6.0 7.66 6.21 0.5 0.2 1.25 0.03 EN31(follow up) 8/9/06 14:30 2 24.2 6.2 na 6.43 na na na na Notes: na = not analyzed nd= not detected ns = not sampled (dry site) * BV08 was an Alternate site, as Site BV15 was found dry Red values were at or above the measured constituent’s action level Yellow shaded area denotes follow-up investigations Light blue shaded area denotes field and laboratory sampling locations CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 39 5.0 LABORATORY ANALYTICAL RESULTS 5.1 Summary Laboratory analyses were conducted at 15 sites, representing over 25 percent of all sites with ponded or flowing water. A summary of the laboratory analytical results is presented in Table 5-1. Table 5-2 presents the laboratory results from all samples. Laboratory reports are included as Appendix B. TABLE 5-1 LABORATORY ANALYSIS STATISTICAL SUMMARY Parameter (units) Maximum Minimum Total Hardness (mg/L CaCO3) 3,400 271 Surfactants (mg/L MBAS) nd nd Oil and grease (mg/L) nd nd Diazinon (μg/L) nd nd Chlorpyrifos (μg/L) nd nd Cadmium (dissolved, mg/L) 0.021 nd Copper (dissolved, mg/L) 0.014 nd Lead (dissolved, mg/L) 0.032 nd Zinc (dissolved, mg/L) 0.096 nd Total Coliform (MPN/100 mL) 900,000 17,000 Fecal Coliform (MPN/100 mL) 130,000 140 Enterococcus Bacteria (MPN/100 mL) >160,000 230 nd = not detected Total hardness measures the amount of calcium and magnesium ions in a water sample, with the result expressed in mg/L of CaCO3. Although it is not itself considered a pollutant, total hardness is measured in order to calculate CTR limits for dissolved metals. Hardness affects the solubility of dissolved metals, as well as other minerals and ions. Total hardness values ranged from 271 to 3,400 mg/L CaCO3. The highest total hardness value was observed at Site BA13, and the lowest value was found at Site AH8. Surfactants (MBAS) are analyzed to detect detergent pollution from residential, commercial, or industrial washing activities. Surfactants were not detected at or above the reporting limit of 0.5 mg/L at any of the tested sites. 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. Oil and grease levels were below the reporting limit for all fifteen tested sites. Diazinon and chlorpyrifos are organophosphate pesticides that are detrimental to birds, mammals, beneficial insects, freshwater fish, invertebrates, and other aquatic organisms. Neither diazinon nor chlorpyrifos were detected at any of the sampled sites. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 40 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, including fish and waterfowl. The laboratory samples collected were analyzed for the presence of dissolved cadmium, copper, lead, and zinc. Dissolved copper was detected in eight sites, with the highest concentration of 0.014 mg/L found at Site AH10. Dissolved zinc was detected in nine sites. The highest concentration of zinc was at Site BV02, at 0.096 mg/L. Cadmium with concentration of 0.021 mg/L was detected only at Site BA13. Lead was detected only at Site EN19 with concentration of 0.032 mg/L. The California Toxics Rule (1-hour) for Dissolved Metals in Fresh Waters1 defines metal toxicity as a function of water hardness, with toxicity decreasing as hardness increases. . The action level for dissolved cadmium with a total hardness value of 3, 400 mg/L from Site BA13 is 0.192. Therefore concentration of 0.021 mg/L is below the action level. Calculating the CTR limits using the lowest total hardness value from all the sites that had detectable levels of copper, lead and zinc, therefore, gives the strictest action level. The appropriate total hardness value is 271 mg/L from Site AH08. The action level for dissolved copper in a water sample with a hardness value of 271 mg/L is 0.034 mg/L. The action level for dissolved zinc with a hardness value of 271 mg/L is 0.271 mg/L and the action level for dissolved lead with the same value of hardness is 0.188 mg/L. Therefore, since all measured copper zinc and lead concentrations were below the action level for the lowest measured hardness value, pollutant source investigations were not required. Coliform bacteria are relatively harmless to humans and are typically present at high levels in mammalian digestive tracts, as well as naturally found in most surface waters and soils. Testing water samples for total coliform bacteria is a standard practice in public health because a high level of total coliform bacteria often, although not always, indicates the presence of other more harmful, pathogenic organisms, usually from fecal contamination. Total coliform is used as a surrogate for these pathogens because they are generally present in much smaller quantities and are therefore difficult to test for directly. During the 2006 dry weather monitoring program, total coliform counts ranged from 17,000 to 900,000 MPN/100 mL. The highest level of 900,000 MPN/100 mL was found at Sites AH46 and BV02. 11 other sites exceeded the action level of 50,000 MPN/100 mL, as well. Upstream investigations were conducted at all 11 sites in 2006; the results are detailed in Section 8 of this report. Fecal coliform, a subset of coliform bacteria, and enterococcus are found primarily in the gastro-intestinal (GI) tracts of humans and animals, so they are commonly used as indicators of water contamination by fecal matter. A host of human diseases, particularly those of the GI tract, are spread through water contaminated with fecal matter. Fecal coliform counts ranged from 140 to 130,000 MPN/100mL. Four sites exceeded the action level of 20,000 MPN/100mL. Enterococcus counts ranged from 230 to grater than 160,000 MPN/100 mL, with three sites exceeding the action level of 10,000 MPN/100 mL. TABLE 5-2 SUMMARY OF LABORATORY ANALYTICAL RESULTS CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 41 Site No. Date Time Surfactants mg/L Oil & Grease mg/L Total Hardness mg/L Cadmium mg/L Copper mg/L Lead mg/L Zinc mg/L Diazinon μg/L Chlorpyrifos μg/L Total Coliform MPN/100ml Fecal Coliform MPN/100ml Enterococcus MPN/100ml AH03 7/26/06 11:35 nd nd 549 nd 0.009 nd 0.037 nd nd 170,0003,000 5,000 AH08 8/8/06 9:20 nd nd 271 nd 0.006 nd 0.031 nd nd 50,000 1,700 230 AH10 7/28/06 12:30 nd nd 468 nd 0.014 nd 0.029 nd nd 300,000 23,000 800 AH24 7/27/06 12:20 nd nd 1590 nd nd nd 0.034 nd nd 500,0003,000 5,000 AH45 7/28/06 11:40 nd nd 830 nd 0.005 nd nd nd nd 300,0005,000 3,000 AH46 7/27/06 10:40 nd nd 1790 nd 0.007 nd 0.046 nd nd 900,000 130,000 >160,000BA06 8/9/06 12:40 nd nd 448 nd 0.009 nd nd nd nd 80,000 8,000 230 BA13 8/9/06 11:45 nd nd 3400 0.021 nd nd 0.094 nd nd 240,000 90,000 13,000 BA36 8/7/06 9:35 nd nd 2110 nd 0.008 nd nd nd nd 80,000 3,000 1,300 BA40 7/28/06 10:05 nd nd 892 nd nd nd 0.021 nd nd 240,000 130,000 30,000 BA51 8/7/06 8:50 nd nd 2010 nd nd nd nd nd nd 50,000 500 2,300 BV02 7/26/06 9:20 nd nd 395 nd 0.005 nd 0.096 nd nd 900,0005,000 2,300 EN02B 8/8/06 10:30 nd nd 707 nd nd nd nd nd nd 23,000 3,000 500 EN09 8/9/06 10:40 nd nd 1660 nd nd nd 0.035 nd nd 17,000 140 230 EN19 8/8/06 12:15 nd nd 1770 nd nd 0.032 nd nd nd 130,0008,000 2,300 Reporting Limits 0.5 5.0 10 0.005 0.005 0.005 0.02 0.05 0.05 20 20 20 Action Levels 1.0 15.0 -* CTR CTR CTR CTR 0.50 0.50 50,000 50,000 10,000 Notes: Red values were at or above the measured constituent’s action level nd = not detected CTR = California Toxics Rule (based on hardness) * = Total hardness is not considered a pollutant (see section 3.4 for details), 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. Total hardness measurements are thus required to calculate action levels for metals. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 42 6.0 DATA ANALYSIS Based on the visual observations and the field and laboratory analytical testing conducted at the visited sites, the following sites demonstrated physical and chemical evidence of possible illegal discharges and/or illicit connections. Site AH03 Site AH03 is an outfall that drains directly into Agua Hedionda Lagoon. It is located south of Chinquapin Avenue, just east of the railroad tracks (photo 14). During an initial visit to the site, trash was observed in and around the water. The total flow was approximately 17 gpm. Laboratory analysis reported a total coliform concentration of 170,000 MPN/100 mL, above the action level of 50,000 MPN/100mL. An upstream investigation for sources of bacteria at this site is detailed in Section 8. Site AH04 Site AH04 is a concrete channel located behind 5600 Avenida Encinas, the Encinas Growers Supply (Photo No. 92). The water in the concrete channel was ponded at the sampling time and appeared to contain water backed up from Site AH10 to the north. During the initial visit, the pH was measured at 9.8, but during a follow-up visit the pH was 8.5. The difference in pH levels is most likely related to the time at which the measurement was taken. The initial pH of 9.8 was measured in the later afternoon, while the reading of 8.5 was observed in the morning. The decrease in pH is most likely related to the daily photosynthesis and respiration cycle of algae in the water, which takes up acidic carbon dioxide during the day and releases carbon dioxide at night. Carbon dioxide is also more soluble in water with a lower temperature, and the temperature in the morning was less than that observed in the afternoon. Site AH08 Site AH08 is a 96-inch diameter reinforced concrete pipe (RCP) outfall, which flows into an earthen channel. The site is located inside the Encinas Power Plant, east of the plant tower (Photo 57). A flow of 16 gpm was observed at the site with clear water and minimal trash noted around the site. During the initial visit, the total coliform level was found to be 50,000 MPN/100mL. An upstream investigation for sources of bacteria at this site is detailed in Section 8. Site AH10 Site AH10 is an earthen channel flowing into two 60-inch diameter RCP inlets located near the railroad tracks northwest of 5600 Avenida Encinas (Photo 40). The nitrate concentration was found to be 30.0 mg/L NO3-N during both an initial and a follow-up visit to the site. Laboratory analysis of a water sample taken during the initial visit reported a total coliform level of 300,000 MPN/100 mL and a fecal coliform level of 23,000 MPN/100 mL, both above their respective action levels. Therefore, an upstream investigation was conducted, the results of which can be found in Section 8. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 43 Site AH12 Site AH12 is a 36-inch diameter RCP outfall west of the Ken Grody Ford parking lot off Paseo Del Norte, on the east bank of the concrete channel running parallel to and east of Interstate 5 (Photo 86). During an initial visit to the site the nitrate level was measured at 25 mg/L NO3-N. The nitrate level was 12.5 mg/L NO3-N during a follow-up visit the next day, which is lower but still above the action level. The upstream investigation for this site is detailed in Section 8. Site AH13 Site AH13 is an outlet consisting of two 48-inch diameter RCPs which discharge to a concrete channel located west of Paseo Del Norte, approximately 250 feet north of the Holiday Inn (Photo 83). The nitrate level was found to be approximately 50 mg/L NO3-N at the site during an initial visit, and it also was measured at 50 mg/L again during a follow-up visit. Flow to this site comes mainly from the area of the flower fields and Carlsbad Premium Outlets. Details of an upstream investigation for this site can be found in Section 8. Site AH18 Site AH18 is a 39-inch diameter RCP outlet in a residential area south of Park Drive and Valencia Avenue (Photo 30). The ammonia level was measured at 1.5 mg/L NH3-N during the initial afternoon visit, prompting an immediate investigation for possible upstream sources. It was noted that there was a steady flow of water on Park Drive coming from a pipe in front of 4860 Park Drive. This flow apparently originates from irrigation water generated on and around the hillside behind 4860 Park Drive, possibly transporting fertilizers or organic debris. There were no observable flows coming from Valencia Avenue, however. The next morning, during a follow-up visit, the ammonia level had dropped to 0.8 mg/L. The flow from in front of 4860 Park Drive was still steady, and there was an additional flow of irrigation water from Valencia Avenue. One potential source of ammonia to Site AH18 could be irrigation runoff from the pipe on Park Drive. It is possible that at the time of the investigation, additional flow from Valencia Avenue had diluted the water enough so that the ammonia level had fallen below the action level. Site AH24 Site AH24 is a concrete channel located at the intersection of Kelly Drive and Park Drive, across from Laguna Riviera Park (Photo No. 26). Laboratory analysis detected total coliform at the level of 500,000 MPN/100 mL. Water in the channel was observed to be clear with a flow rate of 10 gpm. Normal amounts of algae and vegetative growth were observed in the channel. All field constituents tested below their respective actions levels. An upstream investigation of this site was conducted (see Section 8 for details). Site AH31 Site AH31 is an outlet just east of Sierra Morena Avenue, south of Chesnut (Photo 15). The surrounding area is primarily open, with residential areas further upstream. The ponded water at this site had a musty smell, indicating that it had been sitting for some time. The ammonia level was measured at 2.5 mg/L NH3-N, well above the action level of CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 44 1.0 mg/L NH3-N. A follow-up was conducted the next day, finding that the ammonia level was still 2.5 mg/L. An upstream investigation for this site is detailed in Section 8. Site AH45 Site AH45 is an 84-inch RCP outlet located behind Acushnet Company on Aston Avenue (Photo No. 39). The site drains several business complexes and is located northeast of a man-made pond. Laboratory analysis detected a total coliform count of 300,000 MPN/100 mL. A clear, colorless flow of 15 gpm was observed, with normal vegetation surrounding the outlet. Trash was noted in and around the water. An upstream investigation of this site was conducted (see Section 8 for details). Site AH46 Site AH46 is a 60-inch outlet located behind the horse stables off Sunny Creek Road (Photo 23). During an initial visit to the site, the ammonia level was 1.5 mg/L NH3-N, which is above the action level of 1.0 mg/L NH3-N. Organic debris in the creek was noted, but no other sources of ammonia were immediately visible. During a follow-up visit the next day, the ammonia level had dropped to 0.5 mg/L NH3-N, leading to the conclusion that the original high ammonia concentration was the result of a transient flow. However, a pile of horse feces in fairly close proximity to the creek was noted, and decomposing organic material was still visible in some parts of the creek. Therefore, these possible sources of transient spikes in ammonia should be addressed (see Section 9). Levels for all three measured bacterial indicators were all above their respective action levels. Total coliform was 900,000 MPN/100 mL, fecal coliform was 130,000 MPN/100 mL, and enterococcus was greater than 160,000 MPN/100 mL. An upstream investigation of this site was conducted (see Section 8). Site BA06 Site BA06 is a manhole in the sidewalk east of Batiquitos Drive, in a residential area between Poinsettia Lane and Daisy Avenue (Photo 77). During the initial visit to the site, the eight gpm flow was opaque and brown in color, with a turbidity reading of 164 NTU. The residential areas upstream of the site were immediately investigated to look for illegal discharges; however, no specific point sources could be located, and within ten minutes the flow volume had dropped significantly. One woman was observed hosing down her driveway, which was transporting minor amounts of sediment to the street. This was unlikely to have been the primary source of sediment in the flow, however, since the runoff observed in the street was fairly clear. During a follow-up visit the next day the turbidity had dropped to 29.33 NTU, leading the conclusion that high turbidity had been a result of a transient discharge in the upstream residential neighborhood. The action level for total coliform at Site BA06 was exceeded with a reading of 80,000 MPN/100 mL. A detailed upstream investigation was conducted and can be seen in section 8. Site BA07 Site BA07 is a manhole located northeast of the intersection of Buttercup Road and Seascape Drive (Photo No 109). During the initial visit a flow of 2.0 gpm was observed along with a yellow hue to the water. The ammonia level was detected to be 4.0 mg/L, above the action level of 1.0 mg/L. No other constituents tested above or below their CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 45 respective action levels. An upstream investigation was conducted for this site (see Section 8). Site BA13 Site BA13 is a debris basin outlet to Batiquitos Lagoon, located on Arenal Road, southwest of El Camino Real (Photo No 61). Laboratory analysis yielded a total coliform count of 240,000 MPN/100 mL, a fecal coliform count of 90,000 MPN/100 mL, and an enterococcus level of 13,000 MPN/100 mL, all above their respective action levels. The flow of 10 gpm was clear and light yellow in color. An upstream investigation was conducted for this site (see Section 8). Site BA32 Site BA32 is a manhole located in front of 2927 Luciernaga Street (Photo No 101). A flow of two gpm was observed during the initial site visit. The phosphate level was detected at 2.28 mg/L, above the action level of 2.0 mg/L. No other constituents tested above or below their respective action levels. An upstream investigation was conducted for this site (see Section 8). Site BA36 Site BA36 is a 36-inch RCP outlet located in the southeast corner of La Costa Golf Course behind 7525 Gibraltar Street and the Round Tree Apartments (Photo No 46). Laboratory analysis reported a total coliform count of 80,000 MPN/100 mL, above the action level of 50,000 MPN/100 mL. The outlet drains several residential complexes and flows into the golf course. A flow of eight gpm was observed, exhibiting a light yellow color. An upstream investigation was conducted for this site (see Section 8). Site BA40 Site BA40 is an 84-inch RCP outlet located southwest of the Rancho Santa Fe Road and Melrose Drive intersection, currently in a construction site (Photo No. 37). Laboratory analyses reported a total coliform count of 240,000 MPN/100 mL, a fecal coliform count of 130,000 MPN/100 mL, and an enterococcus count of 30,000 MPN/100 mL. The water was observed to be clear with a flow of 16 gpm. Trash and algae were noted at the site. An upstream investigation, detailed in Section 8, was conducted at this site. Site BA47 Site BA47 is a manhole, located on Camino Alvaro, west of Rancho Santa Fe Road (Photo No. 106). A flow of eight gpm was observed during the routine site visit. The pH was measured at 5.6, below the action level of 6.5. During past dry weather programs this site has tested below the action level for pH. No other constituents tested above or below their respective action levels. There are several flows entering the manhole junction box, indicating three main sources of flow. An upstream investigation, detailed in Section 8, was conducted at this site. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 46 Site BA51 Site BA51 is a natural creek located on Alga Road, east of El Camino Real, between 2035 and 2043 Alga Road (Photo No 45). Laboratory analysis detected total coliform at the action level of 50,000 MPN/100 mL, and an upstream investigation, detailed in Section 8, was conducted at this site. Site BV02 Site BV02 consists of two 36-inch RCP outlets located on the east side of State Street, north of the intersection of Laguna Drive and State Street (Photo No. 10). Laboratory analysis detected total coliform at the action level of 900,000 MPN/100 mL. The outlet drains several residential complexes and flows into the Buena Vista Lagoon. A clear, colorless flow of two gpm was observed, although several large pools of ponded water were present at the site. Personal belongings observed in this area suggested human habitation. An upstream investigation was conducted for sources of total coliform (see Section 8). Site BV04A Site BV04A is an outlet where water flows directly into Buena Vista Lagoon (Photo 9). The clear water at this site had a very low flow, about one gpm, and the nitrate nitrogen concentration was measured at the action level of 10 mg/L. The concentration remained the same when water was tested during a follow-up investigation the next day. An upstream investigation, detailed in Section 8, was conducted at this site. Site BV08 Site BV08 is an outlet on the south bank of Buena Vista Creek, just west of El Camino Real (Photo 6). At the time of the first visit to the site, it was noted that the 3.0 gpm flow smelled of rotten eggs. Furthermore, the detergents level was 1.5 mg/L MBAS, which is above the action level of 1.0 mg/L. The area upstream of the site was immediately investigated, but no obvious point sources were found. The area was mostly composed of commercial shopping centers, while further upstream were mainly residential areas. The following day, the detergents level remained at 1.5 mg/L, and an upstream investigation was initiated (see Section 9). Site EN02C Site EN02C is a 39-inch diameter outfall located on the north bank of Encinas Creek, under the Interstate-5 Freeway overpass (Photo 60). The site can be accessed through the Encina Wastewater Plant. The clear, two gpm flow had nitrate (50 mg/L NO3-N), orthophosphate phosphorus (>3.0 mg/L), and detergents (1.0 mg/L) all above their respective action levels during the initial visit. The following day, the orthophosphate phosphorus level had dropped below the action level, but detergents were still at the action level of 1.0 mg/L, and nitrate remained at 50 mg/L, over its action level of 10 mg/L. Section 8 notes the results of the upstream investigation at this site. Site EN14 Site EN14 is a manhole located at the corner of Palomar Oaks Way and Camino Vida Roble, near 1911 Palomar Oaks Way (Photo No 65). The three gpm flow was immediately CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 47 noted to be greater than in previous years, and field testing resulted in an extremely elevated ammonia concentration of greater than 10 mg/L NH3-N and a high turbidity reading of 76 NTU. An upstream investigation was immediately conducted, which is detailed in Section 8. By the following day, the ammonia level was still above the action level but had dropped to 2.5 mg/L, and the turbidity had dropped to 15.93 NTU. Site EN14A Site EN14A is a 48-inch diameter RCP outfall that discharges water to a concrete energy dissipater located approximately 30 yards west of 1911 Palomar Oaks Way in the bottom of a canyon (Photo No 78). The pH level at this site was 5.4 during the initial visit; previous investigations at this site have indicated that consistently low pH levels here may be due to groundwater seepage into the pipe between EN14 (which is directly upstream and does not typically have low pH readings) and EN14A. Also during the initial visit, the ammonia level was measured at 6.5 mg/L NH3-N, well above the action level of 1.0 mg/L NH3-N. The ammonia level continued to be high during a follow-up visit, measuring 10 mg/L. This was somewhat expected because Site EN14A is just downstream from Site EN14 and transports the same flow. Since Site EN 14 had also had elevated ammonia, the same source was likely responsible for the high ammonia readings at the two sites. An upstream investigation for both sites can be found in Section 8. Site EN19 Site EN19 is a concrete channel located immediately east of 1949 Palomar Oaks Way (Photo No 62). Laboratory analysis yielded a total coliform count of 130,000 MPN/100 mL, above the action level of 50,000 MPN/100 mL. A colorless flow of 28 gpm was observed. This site drains several surrounding business complexes. An upstream investigation, detailed in Section 8, was conducted at this site. Site EN21 Site EN21 is a manhole located on Camino Vida Roble between Palomar Airport Road and Owens Avenue (Photo 56). The water in the manhole was nearly ponded during the initial visit to the site, and the nitrate nitrogen concentration was found to be 15 mg/L NO3-N, above the action level of 10 mg/L. No immediate upstream sources of nitrate were noted, and during a follow-up visit the next day, the nitrate level had fallen to 2.5 mg/L. Upstream areas were investigated in further detail to look for possible sources of a nitrate spike. It was noted that some flow was coming from an upstream line originating from Owens, east of Camino Vida Roble. However, when manhole further up Owens was opened, it was dry. Two manholes at the northeast and southeast corners of Camino Vida Roble and Owens were then opened. While the northeast corner was dry, the southeast corner had a 1.0 gpm flow, indicating that there is seepage into the pipe between these two manholes. The seepage water was tested, and while it did not have elevated nitrate, it had relatively high conductivity and a low pH of 5.9, which is typical of groundwater in this area. It was concluded that elevated nitrate was likely the result of a transient flow. Site EN31 Site EN31 is a manhole located in the canyon approximately 10 yards north of 1925 Palomar Oaks Way (Photo 64). During the first visit to the site, the pH was 6.0, which is CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 48 lower than the established action level range of 6.5 to 9.0. The pH remained low (6.2) during a follow-up visit the next day. See Section 8 for more information about this site. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 49 7.0 ADDITIONAL STUDY During the 2006 dry weather program, an additional study was conducted to evaluate the water quality of the major creeks in the City of Carlsbad. This study is not a required component of the City’s Order 2001-01 mandated dry weather monitoring program. The creeks studied were Agua Hedionda Creek, Buena Vista Creek, Encinas Creek, and San Marcos Creek. Four creek sites were selected for monitoring by the City and the creek locations are as follows: • Agua Hedionda Creek (Site AH Creek-1) located at the intersection of El Camino Real and Cannon Road on the north side of the bridge (Photo 24). • Buena Vista Creek (Site BV Creek-1) located north of the bridge on Haymar Drive, across from the golf course (Photo 13). • Encinas Creek (Site EN Creek-1) located East of Paseo del Norte in Encinas Creek, east of manhole along Paseo del Norte, south of Palomar Airport Road (Photo 50). • San Marcos Creek (Site SM Creek-1) located between La Costa Avenue and Costa Del Mar Road, approximately 100 feet to the east of the bridge on El Camino Real (Photo 48). 7.1 Qualitative Observations All creek samples were collected during overcast weather conditions. All of the creek sites had colorless water with the exception of Encinas Creek, which had light yellow colored water. Algae and insects were observed at all the creek sites. 7.2 Field Analytical Results A summary of the field analytical results for the four creek sites is discussed below. Table 7-1 presents the results of the field analyses conducted at these sites and is found at the end of this section. Water temperature readings ranged from 22.0 to 29.2°C. The maximum water temperature was recorded at Site AH Creek-1, and the minimum temperature was recorded at Site EN Creek-1. The pH values ranged from 7.3 to 8.1, with the highest pH reading observed at Site BV Creek-1. The lowest pH of 7.3 was recorded at Site EN Creek-1. Turbidity measurements ranged from 1.73 to 8.14 NTU. The highest turbidity reading of 8.14 NTU was documented at Site EN Creek-1, and the lowest measurement of 1.73 NTU was found at Site BV Creek-1. Conductivity readings ranged from 2.16 to 3.80 mS/cm. The highest conductivity measurement of 3.80 mS/cm was found at Site SM Creek-1. The lowest conductivity reading of 2.16 mS/cm was recorded at Site BV Creek-1. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 50 Ammonia concentrations measured in the creek samples were relatively low. The lowest concentration of 0.1 mg NH3-N/L was observed at Site BV Creek-1. Two sites, EN Creek-1 and SM Creek-1, had ammonia concentrations of 0.3 mg NH3-N/L. Detergent concentrations measured in the all creek samples ranged from 0.25 to 0.5 mg/L for all four sites. Nitrate concentrations measured in the creek samples ranged from 1.25 to 2.5 mg NO3- N/L. Sites AH Creek-1 and SM Creek-1 had nitrate concentrations of 1.25 mg/L, while sites EN Creek-1 and BV Creek-1 had nitrate concentrations of 2.5 mg NO3-N/L. Orthophosphate phosphorus was found at concentrations ranging from 0.03 to 0.49 mg PO4-P/L, with the highest concentration measured at Site EN Creek-1, and the lowest at Site AH Creek-1. 7.3 Laboratory Analytical Results A summary of the laboratory analytical results for the four creek sites is discussed below. Table 7-2 presents the results of the laboratory analyses conducted at these sites. Surfactants were not detected at or above the reporting limit of 0.5 mg/L at any of the creek sites. Oil and grease was not detected at any of the creek sites. Total hardness values ranged from 638 to 1,120 mg/L CaCO3. The highest total hardness value of 1,120 mg/L CaCO3 was documented at Site SM Creek-1 and the lowest value of 638 mg/L CaCO3 was found at Site BV Creek-1. Metal concentrations of dissolved cadmium, copper and lead were below the laboratory detection limits at all of the creek sites. Dissolved zinc with a concentration of 0.024 and 0.020 mg/L was found at sites EN Creek-1 and SM Creek-1, respectively. However, these zinc concentrations were well below the applicable California Toxics Rule benchmarks and were thus not considered an impairment to water quality. Diazinon and Chlorpyrifos were not detected at any of the creek sites. Total coliform counts ranged from 23,000 to 900,000 MPN/100ml for the creek sites. The highest concentration was found at Site AH Creek-1. Fecal coliform counts ranged from 80 to 17,000 MPN/100ml. Site AH Creek-1 had the highest fecal coliform concentration. Enterococcus counts ranged from 80 MPN/100ml to 3,000 MPN/100ml. Site AH Creek-1 had the highest enterococcus concentration. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 51 TABLE 7-1 ADDITIONAL STUDY SUMMARY OF FIELD ANALYTICAL RESULTS Site ID Date Time Temp. pH Turbidity Conductivity Detergents Ammonia Nitrate Orthophosphate Phosphorus °C NTU mS/cm mg/L MBAS mg/L NH3-N mg/L NO3-N mg/L PO4-P AH Creek-1 7/27/06 11:45 29.2 7.9 4.24 2.93 0.25 0.2 1.25 0.03 BV Creek-1 7/26/06 10:40 25.5 8.1 1.73 2.16 0.25 0.1 2.5 0.07 EN Creek-1 8/7/06 11:40 22.0 7.3 8.14 2.93 0.5 0.3 2.5 0.49 SM Creek-1 8/7/06 10:40 24.2 7.7 3.93 3.80 0.5 0.3 1.25 0.10 TABLE 7-2 ADDITIONAL STUDY SUMMARY OF LABORATORY ANALYTICAL RESULTS Site ID Date Time Surfactants mg/L MBAS Oil and Grease mg/L Total Hardness mg/L Cadmium mg/L Copper mg/L Lead mg/L Zinc mg/L Diazinon μg/L Chlorpyrifos μg/L Total Coliform MPN/100ml Fecal Coliform MPN/100ml Enterococcus MPN/100ml AH Creek-1 7/27/06 11:45 nd nd 892 nd nd nd nd nd nd 900,000 17,000 3,000 BV Creek-1 7/26/06 10:40 nd nd 638 nd nd nd nd nd nd 50,000 130 80 EN Creek-1 8/7/06 11:40 nd nd 727 nd nd nd 0.024 nd nd 50,000 230 230 SM Creek-1 8/7/06 10:40 nd nd 1,120 nd nd nd 0.020 nd nd 23,000 80 130 nd = not detected CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 52 8.0 FOLLOW UP INVESTIGATIONS 8.1 Purpose The purpose of the follow-up investigations is to find the source of the pollutants that were identified during initial field screening and laboratory testing. The field screening program performed in August 2006 found action level exceedances for detergents at two sites, ammonia at six sites, nitrate at six sites, orthophosphate phosphorus at two sites, and pH at four sites. In the best professional judgment of the field crew, turbidity levels at two sites were also unusually high and warranted follow-up visits. When field analyses detected action level exceedances, the sites received a follow-up visit within 24 hours of the initial visit. At sites where field screening parameters were measured above their respective action levels during both visits, upstream investigations were conducted. Upstream investigations are also conducted immediately if pollutant levels are well above the established action levels during the first visit. The results of further source investigations are detailed below. Samples were collected for laboratory analysis at 15 sites during the initial round of field screening. Complete results of these analyses showed bacteria action level exceedances at 13 sites. Follow-up investigations were undertaken at each of these 13 sites to identify the source(s) of the high bacteria counts. 8.2 Investigation Procedure Follow-up investigations were conducted in two rounds. The first follow-up investigations were for the sites at which field tests indicated action level exceedances. These investigations were conducted immediately after confirming the elevated concentrations via additional field testing. The second round of follow-up investigations was carried out for the sites at which laboratory testing had found elevated constituent levels. These investigations were conducted after receiving the test results from the laboratory. During the investigations, the D-MAX field crew measured flow rates, performed visual observations, and conducted field testing. Visual observations, such as water color, clarity, odor, floatable materials, vegetation and biology, and physical parameters, such as temperature, pH, and conductivity, were recorded on field data sheets at each official sampling site. Observations and data for locations upstream of the official sites were recorded in the field crew’s log notebooks. Field data sheets are included in Appendix C. In order to determine the potential sources of bacteria to sites with high bacteria, the D-MAX field crew used 3M Petrifilm E. coli / Coliform Count plates as a rapid method to trace sources of both total coliform bacteria and E. coli bacteria in the storm water conveyance system. Because laboratory microbiological analyses take a significant amount of time, relying primarily on laboratory analyses can significantly delay an upstream investigation for bacteria. Also, due to the cost of these tests, often only a few locations can be examined, giving a less comprehensive picture. Using the Petrifilm plates allowed the field crew to quickly sample numerous branches or locations upstream of the sites. Samples were taken in the field and preserved with Butterfield’s phosphate buffer to keep the pH close to 7. Sample containers were kept on ice in a cooler and then plated within 6 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 53 hours of collection to ensure proper holding times were observed. The plates were then incubated at 35°C ± 1°C. After 24 hours of incubation, total coliform bacterial concentrations were enumerated, and after an additional 24 hours (48 hours incubation total) E. coli levels could be read from the same plates, helping investigators identify potential bacterial sources over a large area in a timely manner. This method is an improvement over the technique used in the past because it now also tests for E. coli bacteria. E. coli bacteria, a subset of fecal coliform bacteria, are better indicators of fecal contamination than total coliform alone. Additionally, since total coliforms and E. coli are enumerated on the same plate, a rough ratio of E. coli (more likely to be from fecal sources) to total coliforms can be ascertained. While not unequivocally conclusive, this information allows for a better determination as to whether observed high bacteria levels likely came from fecal or non-fecal sources. Note that although E. coli are a major subset of fecal coliform bacteria, they are not enumerated for upstream analyses as an equivalent replacement for laboratory fecal coliform testing. It should be noted that although laboratory analyses are done for total coliform, fecal coliform, and enterococcus bacteria, field bacteria analyses using Petrifilm plates are used to test only for total coliform bacteria and E. coli. As noted in Section 4, total coliform bacteria themselves are generally harmless to humans but are a commonly-used indicator of harmful, pathogenic organisms, especially those found in fecal matter. Because the total coliform group of bacteria includes many species of bacteria of non-fecal origin, it is not as precise an indicator of fecal contamination as fecal coliforms or enterococci. A high total coliform count does not necessarily indicate fecal contamination of water, as total coliforms can also be found in soil, grain, and water, especially ponded water. Therefore, a water sample with a high level of total coliform bacteria does not necessarily have a correspondingly high level of pathogens. Typically, a fecal coliform to total coliform ratio of at least 0.3 indicates fecal contamination, while lower ratios point to decomposing organic matter or other non-fecal sources. Fecal coliform and enterococcus counts above their respective action levels also usually indicate fecal pollution. Fecal coliforms and enterococci are found mainly (but not solely) in the digestive tracts of humans and warm-blooded animals. With a few notable exceptions, fecal coliforms and enterococci are not themselves hazardous to humans, but their presence is usually a good indication of the presence of that dangerous pathogens found in animal or human waste may be present. Fecal contamination from animal sources may be less hazardous to humans than fecal contamination from human sources; however, standard tests for fecal coliform and enterococcus bacteria cannot reliably distinguish between human and animal sources. Field bacteria tests using Petrifilm plates use Colony Forming Units per milliliter (CFU/ml) as the measurement unit, rather than the Most Probable Number (of colony forming units) per 100 milliliters (MPN/100 mL) unit used in laboratory analyses. These units are generally comparable, although the laboratory value is one hundred times greater because the volume is 100 times greater. D-MAX has created a stringent field protocol to control sample development as consistently as possible. Sterile dilution vials containing pre- measured amounts of sterile buffer solutions for dilution are used for sample collection, the diluted samples are kept on ice in a cooler while in the field, and chilled samples are collected from the field crew twice daily to be plated within the proper holding time. Plated samples are then developed in an incubator for a total of 48 hours. While this method is not CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 54 conducted at a certified laboratory, it is still useful for determining which locations have relatively higher or relatively lower bacteria levels. The action level for total coliform bacteria is 50,000 MPN/100 mL, which roughly corresponds to 500 CFU/mL. However, only about 150 or fewer colony forming units can be accurately enumerated using a Petrifilm plate. This would correspond to 15,000 MPN/100 mL. Therefore, all samples were first diluted 1:10 with sterile buffer solution before Petrifilm analysis, thus adjusting the detection limits for Petrifilm plates from the standard value of 1-150 CFU/mL to 10-1,500 CFU/mL. This adjusted range corresponds to approximately 10,000 to 150,000 MPN/100 mL, a much more useful range when dealing with total coliform bacteria levels around the action level of 50,000 MPN/mL. Field investigators began the source identification investigations by testing the water at the site itself; they then gradually worked upstream until potential pollutant sources could be identified. If follow-up field testing at a site resulted in constituent concentrations below specified action levels, it was concluded that the pollution found during the initial field screening and laboratory analysis phase of the 2006 Dry Weather Testing Program was due to a transient flow. 8.3 Investigated Sites Site AH03 Site AH03 is an outfall that drains directly into Agua Hedionda lagoon, which is located east of the railroad tracks and south of Chinquapin Avenue. Laboratory analysis of water sample taken during a routine visit to the site found total coliform bacteria at 170,000 MPN/100 mL, above its action level. Fecal coliform and enterococcus counts were below their respective action levels. Site AH03 is a large open outlet with high accessibility to animals and people. Upon visiting the site, small squirrels and birds were seen in the immediate vicinity of the site. At the actual outlet, there were signs of human activity. The outlet was spray-painted, drink canisters were seen lying in the area and a white t-shirt was hung on the side of the outlet Above the outlet there seemed to be a manmade walking path which led to the outlet. Testing of a water sample from the site showed moderate levels of total coliform and E. coli. Water is conveyed to Site AH03 via a line from the north, which is essentially parallel to the train tracks. Lateral lines from residential areas join this main line around Tamarack Avenue. One sample was taken from this main line just downstream (south) of Tamarack Avenue. Analysis of a sample from this site, labeled AH03-1, reported relatively low levels of total coliform and E. coli. Downstream of sampling location AH03-1 a lateral from Chinquapin Avenue joins the main line. A sample was taken from a manhole at the intersection of Chinquapin Avenue and Long Place, just before the lateral line joins the main line. A municipal construction project involving sidewalk repair was being conducted in this area. Ponded water with decomposing vegetation and landscaping waste was observed along Chinquapin Avenue. Leaves, grass and several large palm tree pieces were seen lying in the gutter. The total coliform level in the sample from this location was higher than that recorded for the site itself, but the E. coli count was somewhat lower. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 55 The most likely source of total coliform bacteria to site AH03 is the combination of landscaping waste and irrigation runoff observed in the residential area along Chinquapin Avenue. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 56 Site AH03 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) AH03 East of railroad track, south of Chinquapin Ave. 15 150 40 AH03-1 200 ft. south of Tamarack next to railroad track 10 40 <10 AH03-2 Intersection of Chinquapin Ave. and Long Pl. < 1 240 20 Site AH08 Site AH08 is a 96-inch diameter reinforced concrete pipe (RCP) outfall, located on the property of the Encinas Power Plant. Laboratory analysis yielded a total coliform count at its action level of 50,000 MPN/100mL, and fecal coliform and enterococcus counts were below their respective action levels. Site AH08 was revisited, a water sample was taken for bacteria analysis. The 96-inch RCP upstream of the site carries water from Cannon Road, south of the power plant, to Site AH08. At Cannon Road there is a junction box where upstream flows from various areas join and are directed to the 96-inch RCP. The majority of the flow to the main line comes from lines from residential areas to the east. A connection between the storm drain system and Cannon Lake, located south of Cannon Road and east of El Arbol Drive, also exists, but the connection itself is at a much higher elevation than the water level observed in the lake, and no flow was observed entering the storm water conveyance system. A water sample was taken from a manhole junction box on Cannon Road, just east of El Arbol Drive (AH08-1). A flow rate of less than one gpm was observed; this water was coming from residential areas to the east of Cannon Road and El Arbol Drive. The manhole contained decomposing plant material and sediment. The total coliform level at this location was moderately high, but no E. coli were detected. Note that a flow of five gpm was observed at Site AH08 itself, and no known lateral connections exist between the manhole on Cannon Road and Site AH08. The total coliform level at Site AH08 itself was almost an order of magnitude lower than that measured in the upstream manhole, and it appears that additional water that enters the main line downstream of the manhole junction box significantly dilutes the bacteria density. The source of the increased flow between the manhole on Cannon Road upstream of the site and Site AH08 is somewhat unclear but is likely to be natural seepage, as the area around Cannon Road is at a higher elevation than Site AH08 itself. Regardless of the source, the additional water does not appear to be negatively impacting the water quality at the site. The total coliform bacteria level measured at Site AH08 itself during the upstream investigation was relatively low, and no E. Coli was detected. Additionally, laboratory analyses of water from the site did not find any bacteria action level exceedances at the site in 2004 or 2005, and it appears that the total coliform exceedance measured earlier in 2006 may have been due to decomposing organic material in the upstream conveyance or a transient flow. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 57 Site AH08 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) AH08 Inside Encinas power plant, east of plant tower at south end of open channel outfall 5 50 <10 AH08-1 100 ft. east of El Arbol Drive and Cannon Road intersection on Cannon Road < 1 460 <10 Site AH10 Site AH10 is an earthen channel discharging into two 60-inch diameter RCP inlets located west of Avenida Encinas, near Manzano Street and El Arbol Drive. Two upstream investigations were conducted for this site in 2006: one for nitrate, completed concurrently with the routine field screening portion of the program, and one for bacteria, conducted later on after receiving analytical results from the laborabory. During both an initial and follow-up visits to this site, the nitrate level was measured at 30 mg/L NO3-N. Nitrate has been measured in excess of the action level at this site every year since 2002, when nitrate testing was added to the City’s Dry Weather Monitoring Program. The primary source of flow to this site is an earthen channel running east to west that CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 58 originates east of I-5. Runoff conveyed through upstream sites AH11, AH12, and AH13 flows to this channel. A small concrete channel coming from the south behind 5600 Avenida Encinas joins the earthen channel just upstream of Site AH10, but water in that channel was observed to be ponded at the time of both visits. It was concluded that the earthen channel coming from the east was transporting nitrate to Site AH10, which is logical since Sites AH12 and AH13 have historically had high nitrate levels. Nitrate may originate from the flower fields upstream of the Carlsbad Premium Outlets; see the descriptions of upstream investigations for Sites AH12 and AH13 for further details on the source of nitrate to these sites. Laboratory analysis of a water sample taken during the initial site visit detected a total coliform level at 300,000 MPN/100 mL and fecal coliform count of 23,000 MPN/100 mL at Site AH10, so a second investigation, this time for bacteria, was initiated after receiving the results from the lab. The results of the upstream investigation for bacteria are summarized in the table and map below. Total coliform, which is naturally present in soils and surface waters, especially along with decomposing organic material, may come from the area around Site AH13 (labeled AH10-3 on the map below). Overall, though, the areas upstream of the earthen channel by Site AH10 do not appear to be major contributors of E. coli. The highest E. coli level was measured at the site itself, although even that level is not remarkably high in the context of the dry weather program. It is likely that animals accessing the open channel just upstream of the site are the main sources of E. coli, but deposition of animal waste may be somewhat sporadic. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 59 Site AH10 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) AH10 West of Avenida Encinas, near Manzano/El Arbol intersection, near railroad tracks 5 100 30 AH10-1 Behind 5600 Avenida Encinas near railroad tracks, same location as Site AH04 Ponded 10 <10 AH10-2 50 feet east of West of Avenida Encinas, near Manzano/El Arbol intersection 5 50 10 AH10-3 Concrete channel west of Paseo Del Norte, approximately 250 ft north of T.G.I.F restaurant 10 330 <10 AH10-4 Catch Basin in the rear of Carlsbad Premium Outlets, Directly east of the center of the mall 10 <10 <10 Site AH12 Site AH12 is a 36-inch diameter RCP outfall on the east bank of the concrete channel that runs north-south on the east side of I-5. The initial and follow-up visits to this site found CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 60 nitrate concentrations of 25 mg/L NO3-N and 12.5 mg/L NO3-N, respectively. The conveyance system was traced upstream to a junction of two lines, one from the north, and one from the southeast. The flow from the north drains car dealerships at Car Country Carlsbad. A manhole near Bob Baker Jeep was opened to test the water in this line, which ultimately had a nitrate concentration below the action level of 10 mg/L. Water coming from the southeast line, which originated in the flower fields east of the Carlsbad Premium Outlets, was then tested, and a nitrate level of 75 mg/L was measured. The location of that test is the same location as upstream investigation site AH10-4, which is shown on the map for the bacteria upstream investigation for Site AH10. The invert elevation for that catch basin is approximately 30 feet below the level of the neighboring flower fields. Irrigation water from the flower fields may seep through the ground and into the catch basin, carrying with it nitrate from fertilizer used in the flower fields. Therefore, as in previous years, the source of nitrate to Site AH12 was may be water originating from the flower fields. Site AH13 Site AH13 is two 48-inch diameter RCPs discharging to a concrete channel located west of Paseo Del Norte. The nitrate concentration at this site was measured at 50 mg/L NO3-N during both initial and follow-up site visits. Water from an upstream catch basin located east of Paseo del Norte, in the Carlsbad Premium Outlets parking lot, just west of the stairs to the flower fields, was tested. As noted above in the discussion for Site AH12, sampling indicated that water from the flower fields drainage area had a nitrate level of 75 mg/L, and the flower fields are a possible source of the nitrate exceedance at Site AH13. Site AH24 Site AH24 is in a concrete channel located at the intersection of Kelly Drive and Park Drive, located across from Laguna Riviera Park in a residential area. Laboratory analysis of a water sample found total coliform above the action level of 50,000 MPN/100 mL. The channel can be followed back upstream toward El Camino Real, which is north of the site. North of the site but south of El Camino Real, a lateral line from the east, along Hillside Drive, joins the channel. A sample was taken from what was labeled AH24-1, a manhole on this line. A significant amount of leaves and debris were observed in the manhole (Photo 8-1). Bacterial analysis of this water showed a fairly high total coliform count and a moderately low E. coli level. Farther upstream along this line, near the Cordoba and Avila intersection, an additional manhole was opened but was found to be dry. Farther north in the main channel, a final sample was collected from the southward flow near El Camino Real (AH24-2). Bacterial levels were fairly low for this sample. The manhole on Hillside Drive, AH24-1, collects runoff from a residential area on Hillside Drive and northwest of Hillside Drive along Cordoba Place. A large amount of decomposing organic matter, debris, and sediment was observed in the manhole, including eucalyptus leaves, fast food bags, and toys. The slow flow in the manhole allowed for decomposing material to stay in contact with water for relatively long periods of time. Water taken from the manhole was yellow, which is typically characteristic of water influenced by Photo 8-1 Manhole at the corner of Kelly Drive and Hillside Drive CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 61 decomposition. The decomposing matter was likely the primary source of the total coliform bacteria at Site AH24. Site AH24 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) AH24 Kelly and Park Dr. intersection 2 130 <10 AH24-1 On Kelly Dr., near the corner of Kelly Dr. and Hillside Dr. 1 940 20 AH24-2 On El Camino, 100 ft. to the east of El Camino and Kelly Intersection <1 30 <10 Site AH31 Site AH31, an outlet just east of Sierra Morena Avenue and south of Chesnut Avenue, had an ammonia concentration of 2.5 mg/L NH3-N during both an initial and follow-up visit. The ponded water at the site had a musty smell, and the flow appeared to be almost completely blocked at that point by excessive vegetation in channel. It was initially hypothesized that accumulation of ammonia in the ponded water, probably resulting from decomposition of CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 62 organic debris, was the main cause of elevated ammonia. The only two sources of water to the site were surface flow coming from Sierra Morena Avenue, and ponded water in a canyon in the middle of an open area on the west side of Sierra Morena Avenue. The surface flow was tested and found to have an ammonia concentration of only 0.6 mg/L NH3- N. Water in the canyon was then tested, and it had an ammonia level of 1.5 mg/L NH3-N. However, it was unclear whether the water in the canyon had come from the open area surrounding it or was just back-up from Site AH31 itself. Since no evidence of overland flow was visible in the canyon, the latter scenario was more likely. Therefore, it appears that ammonia at Site AH31 is likely a result of the decomposition of organic matter, which is facilitated by back-up of water caused by excessive vegetation. Recommendations for Site AH31 can be found in Section 9. Site AH45 Site AH45 is an 84-inch RCP outlet located close to a pond behind Acushnet Company on Aston Avenue. The site drains an area of commercial businesses and office parks located to the east of the site. Laboratory analysis of a water sample from the routine site visit detected a total coliform count of 300,000 MPN/100 mL. A single main line flows to the site from a manhole at the south end of Van Allen Way. Upstream of the location on Van Allen Way the storm drain system has several branches from College Boulevard and Aston Avenue. Historically, the highest bacteria counts have been recorded at the location at the south end of Van Allen Way, with sampling locations farther upstream either being completely dry or exhibiting low flows with relatively low bacteria counts. In 2006, this same pattern was again observed. A water sample was first taken from Site AH45 itself and then sampled the manhole at the south end of Van Allen Way (AH45-1). The water from the manhole had notably higher levels of both total coliforms and E. coli than the water taken from the site itself. It was also noted that the flow at the manhole on Van Allen Way was about 10 gpm, while the flow downstream at Site AH45 was about 15 gpm. It is likely that there is some seepage into the main line between the two points, as the site is at a significantly lower elevation than the manhole. However, because the bacteria counts were lower at the site than at the manhole, it does not appear that the water entering the line downstream of AH45-1 is a source of bacteria. The City’s storm drain map indicates that there are three lines that enter the manhole on Van Allen Way. Two are small laterals, one from the northeast and one from an inlet at the extreme south end of Van Allen Way. Perhaps because the manhole is so deep or because the laterals enter the main line slightly farther upstream, outfalls from the laterals into the main pipe cannot be observed from this location. As in previous years, no access point to the northeast line could be found, and the only access point for the other line is the inlet, at which no flow was observed. The third line comes from the east and drains a much larger area. The City’s storm drain map shows that there is a manhole junction box on College Boulevard, labeled 29B-99 on the City map. The field crew has unsuccessfully tried to locate this structure, and follow-up with the City indicated that the location had been paved over during street maintenance. Farther upstream to the east, several manholes on College Boulevard northeast and southeast of the site were opened and found to be dry. A Manhole on Aston Avenue near College Boulevard, south of the site, was opened and found dry as well. In 2004, City staff visited the site with the field crew to conduct a test for chlorine. No chlorine was detected at that time, which indicated that the excess flow was not from CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 63 potable water. Relatively high E. coli counts, along with the fairly flat topography just upstream of the manhole and the lack of high conductivity readings, indicate that groundwater is also not responsible for the flow at AH45-1. While the source of water remained uncertain due to access constraints, it is possible that an illicit connection is present in the area just upstream of AH45-1 and is contributing bacteria to the storm drain system. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 64 Site AH45 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) AH45 Aston Ave., behind building 1812 Acushnet Company, north east of the pond 15 190 10 AH45-1 In the center of the street at the south end of Van Allen Way 10 350 130 Site AH46 Site AH46 is a 60-inch outlet located off Sunny Creek Road, behind the horse stables. The flow from the outlet joins Agua Hedionda Creek approximately 200 feet downstream of the site. Laboratory analysis yielded a total coliform count of 900,000 MPN/100 mL, fecal coliform at 130,000 MPN/100 mL, and enterococcus at greater than 160,000 MPN/100 mL. During the initial visit, a pile of horse feces was observed in fairly close proximity to the creek but not directly in the water, and decomposing organic material was visible in some parts of the creek. Following standard procedure for upstream investigations, the site was revisited, and a water sample was taken. Bacteria analyses reported a moderate level of total coliform and a moderately high level of E. coli. The flow was then traced upstream to the intersection of Sunny Creek Road and College Boulevard, where a lateral line from a residential area to the east joins the main line. A sample was taken from the lateral line just before it joined the main line (AH46-1), returning even higher levels of total coliform and E. coli than that measured for Site AH46 itself. The main line was then followed farther upstream to the south, where a manhole at the intersection of College Boulevard and El Camino Real was opened. Two lines converge at this manhole, and separate samples were taken from the line from the south (AH46-2) and from the line from the east (AH46-3). Because the two lines were accessed via the same manhole, the map for this upstream investigation shows just one point for these two samples. The eastern line drains the area around El Camino Real east of College Boulevard, and the southern line gathers water from south of El Camino Real. Similar to 2004, animal waste was found in the manhole, although at the time of sampling it was not in contact with the water (Photo 8-2). E. coli readings were not especially high for either of the samples, likely because the water was not directly contacting the animal waste. Two days after the first follow-up samples were taken, the field crew returned to the residential area to the east of the site for further investigation. Very minimal flow was present in the line at that time, a sample from the trickling flow at AH46-1 did not have Photo 8-2 Animal waste in manhole at intersection of El Camino Real and College Boulevard CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 65 especially high bacteria levels. Landscaping waste was present on several sidewalks and gutters, and people were seen walking their dogs and allowing them to leave their waste in various locations without proper waste disposal. No irrigation was observed at the time of this visit, which was close to noon, but at times of irrigation it is likely that fecal matter washes from the yards into the storm drain system. Decomposing organic material in the storm drain system and around the site may contribute to high total coliform readings. For fecal coliform and Enterococcus, which are more likely to come from fecal sources, the most likely sources are pet waste from the residential area east of the site, animal waste in the storm water conveyance system, and horse waste from the neighboring stables. The animal waste, likely from wild animals accessing the storm drain system, and the horse waste would only be significant sources when either washed into the water stream or deposited directly in it. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 66 Site AH46 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) AH46 Outfall at north end of the horse stable at Sunny Creek Road 10 210 70 AH46-1 Intersection of Sunny Creek Road and College Boulevard, line from the east 1 470 100 AH46-2 Intersection of El Camino Real and College Boulevard, line from the south 2 130 10 AH46-3 Intersection of El Camino Real and College Boulevard, line from the east 3 50 <10 AH46-4 Intersection of Badger Lane and Wolverine Terrace, directly behind the gate <1 130 10 Site BA06 Site BA06 is a manhole in the east sidewalk of Batiquitos Drive, located midway between Poinsettia Lane and Daisy Avenue. Laboratory analysis detected total coliform at the level of 80,000 MPN/100 mL. The flow to the manhole drains a residential area directly to the east of BA06 along Rosemary Avenue, Daisy Avenue and Snapdragon Drive. The site did not have any other parameters measured above the action level during the initial visit. Returning to the site for an upstream investigation, a significant amount of sediment and decomposing plant material was noted in the base of the manhole. Analysis of a water sample from the site reported a high total coliform count and a moderate E. coli reading. The main source of the 1 gpm flow at Site BA06 was traced immediately east to a residential area. The main source of this flow appeared to be excess irrigation water from the surrounding residential area. A water sample from this area (BA06-1) also found a high total coliform count and a moderate E. coli count. Landscaping waste and dead leaves were seen decomposing in the curb gutters, where water from irrigation runoff was flowing. The curb on Rosemary Avenue had algae growth, indicating a continual stream of water in the area. Upstream from the site at the intersection of Rosemary Avenue and Snapdragon Drive, irrigation runoff was also witnessed. The main source of water to Site BA06 is excess irrigation water from the surrounding residential areas. It is likely that the consistent irrigation runoff combined with decomposing landscaping waste, leaves, algae, and other organic matter along Rosemary Avenue and Snapdragon Drive are responsible for total coliform levels at Site BA06. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 67 Site BA06 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) BA06 Batiquitos Drive, midway between Pointsettia Lane and Daisy Avenue 1 680 40 BA06-1 Intersection of Rosemary Avenue and Snapdragon Drive, across from 943 and 941 Rosemary Avenue 1 930 50 Site BA13 Site BA13 is a debris basin outlet to Batiquitos Lagoon, located south of Arenal Road, west of El Camino Real. Laboratory analysis yielded a total coliform count at 240,000 MPN/100 mL, fecal coliform at 90,000 MPN/100 mL, and enterococcus at 13,000 MPN/100 mL, all above their respective action levels. The flow of 10 gpm was colorless and slightly cloudy. BA13 The revisited Site BA13 and collected water samples for bacteria analysis, then worked their way upstream checking the main pipeline and any lateral lines for significant flow. The CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 68 sampling locations and results of the upstream investigation are summarized in the map and table presented below. Most of the water flowing to the site comes from a main line from the north. Immediately upstream of the site is a residential area. The Plaza Paseo Real commercial complex, the Carlsbad City Library, and a residential area on Dove Lane and Moorhen Place are farther upstream. Lateral lines enter the main line at a variety of locations. During the first follow-up investigation, total coliform and E. coli bacteria levels were found relatively high at upstream location BA13-1, which is directly north of Site BA13. Additional sampling was then conducted two days later, and a fairly high E. coli count was recorded at upstream location BA13-3, near the Vons in Plaza Paseo Real. Trash, sediment, and decomposing organic material were noted at a number of locations upstream of Site BA13. Photos 8-3 and 8-4 are two examples of such locations. These conditions are likely to be the primary sources of total coliform to Site BA13. However, these sources are not likely to contribute E. coli, which generally comes from fecal material. It was determined that more data was necessary, so the site was revisited the following week to further investigate the high bacteria levels. Because a site toward the downstream end of the shopping center had a relatively high level of E. coli, the investigation was particularly interested in assessing whether any illegal discharges or illicit connections that might contribute bacteria were present in Plaza Paseo Real. As shown on the map and table below, a large number of samples were taken from sites in and around the Plaza Paseo Real. The results indicate that trash and debris in the conveyance in the shopping center may contribute to total coliform levels, but no significant sources of E. coli were noted. In addition to the sites displayed on the map and table below, a sample was also taken from a small leak in a reclaimed water irrigation system by the library. Water from this leak was not reaching the storm drain system at the time, but it could when irrigation is occurring. Both total coliform and E. coli were not detected in that sample. E. coli seems to come from the residential area to the northwest of the shopping center. The highest total coliform and E. coli densities were measured at BA13-6, a manhole in Dove Lane just north of the Carlsbad City Library, and BA13-4, which is just downstream of BA13-6. Downstream of BA13-6 but upstream of BA13-4, a small line from the west joins the main line. This small line has historically had low pH values, and in 2006 the pH was measured at 5.6. No detectable bacteria was measured in this flow, which is likely a result of the low pH. When a significant amount of flow is present in this line, it can influence the bacteria levels farther downstream by lowering the pH. When the flow in the line is small, it does not have a large effect on the downstream pH. Fluctuations in flow from this line may Photo 8-3 Debris in manhole on Columbine Drive Photo 8-4 Storm drain across from Ultrastar Cinemas in Plaza Paeso Real CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 69 explain why fairly large differences in bacteria levels were observed between sampling events on different days at BA13-4. Flow from a lateral line from the residential area west of the library also seems to dilute bacteria levels at BA13-8 and farther downstream in the shopping center. Farther upstream of BA13-6, all the manholes on Dove Lane between BA13-6 and Moorhen Place were opened, and all were found to be dry. Some water was ponded along the curb close to an inlet on the north side of Moorhen Place, most likely from irrigation runoff earlier in the day, was sampled (BA13-14). E. coli was not detected in this sample. This may indicate that there is a source of bacteria somewhere between Moorhen Place and BA13-6. This source could not be identified with certainty, but it is possible that it could be a small sewer leak or perhaps animal waste in the conveyance. Ammonia is commonly used as an indicator of sewage, but the water in the manhole at BA13-6 was yellow, which prevented an ammonia test from being conducted since the ammonia field test relies on color change from essentially colorless to yellow to measure the ammonia concentration. See Section 9 for recommendations for Site BA13. During the upstream investigation, it should also be noted that a poorly maintained grease bin was noted in the dumpster enclosure at the southwest end of the shopping center, and a large amount of wire was noted in an east-west lateral line located to the west of the Ultrastar Cinemas entrance. Although these were not considered sources of bacteria, follow-up actions by the City may be advisable. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 70 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 71 Site BA13 Upstream Investigation ID Location Date Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) BA13 Debris basin outlet to Batiquitos Lagoon, southwest of El Camino Real and Arenal Intersection 9/12/06 10 1150 50 BA13-1 Between 1843 and 1839 Lotus Court on sidewalk, Near intersection of Lotus Court and Manzanita Street. 9/12/06 10 990 260 BA13-1 Between 1843 and 1839 Lotus Court on sidewalk, Near intersection of Lotus Court and Manzanita Street. 9/18/06 5 230 <10 BA13-2 Between 7260 and 7259 Mimosa Court on sidewalk 9/12/06 2 200 <10 BA13-3 Manhole in Plaza Paseo Real, just south of the Vons on the east side of the drive 9/14/06 10 190 100 BA13-3 Manhole in Plaza Paseo Real, just south of the Vons on the east side of the drive 9/18/06 2 140 10 BA13-4 In parking lot of the Carlsbad City Library near the book drop box 9/14/06 5 10 <10 BA13-4 In parking lot of the Carlsbad City Library near the book drop box 9/18/06 2 1010 600 BA13-5 Manhole behind library next to parking space in planter 9/18/06 <1 <10 <10 BA13-6 On Dove Lane behind library, southwest side of Dove Lane 9/18/06 1 1510 1050 BA13-6 On Dove Lane behind library, southwest side of Dove Lane 9/19/06 Ponded 900 510 BA13-8 South of library next to main parking lot road near large external pipe. 9/18/06 2 410 30 BA13-9 South of library, directly west of Ultrastar Cinema 9/18/06 Ponded 390 <10 BA13-10 West of Vons between the Vons and post office 9/18/06 2 20 <10 BA13-11 Between Mimosa Drive and Manzanita Street on Aviara in front of bike lane entrance 9/18/06 2 370 <10 BA13-12 On Manzanita Street, at Lilac Court and Manzanita intersection 9/18/06 2.5 50 <10 BA13-13 Between 7222 and 7224 Columbine Drive, North of Columbine Drive and Geranium 9/18/06 1 510 10 BA13-14 At the intersection of Moorhen Place and Dove Lane 9/19/06 Ponded 60 10 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 72 Site BA36 Site BA36 is a 36-inch RCP outlet located in the southeast corner of La Costa Golf Course behind 7525 Gibraltar Street and the Round Tree apartments. The outlet drains several residential complexes and flows into the golf course. Laboratory analysis detected a total coliform count of 80,000 MPN/100 mL, above its action level. Other bacterial indicators measured at the time were below their respective action levels. There are two main branches leading to Site BA36. A line from the south drains a residential area along Azahar Street, Garboso Street, and Romeria Street. The east branch flows from Solano Street and Gibraltar Street. The two branches join at 7525 Gibraltar Street and continue to Site BA36. At the time of the upstream investigation, no flow was observed in the eastern line. A sample was taken from the southern branch near the La Costa Avenue and Romeria Street intersection, where the conveyance is a concrete channel (BA36-1). The flow at the channel was approximately equivilant to the flow at Site BA36. Significant algae growth and decomposing orgranic matter were observed in the water. Wildlife was also noted in the open area around the channel, but, unlike 2005, no animal waste was observed in the channel. Total coliform levels were not especially high during the upstream investigation, but it is likely that what total coliform bacteria was present in the storm drain system is due to decomposing organic material, as no significant sources of fecal matter were noted and no E. coli was detected at the site. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 73 Site BA36 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) BA36 Southeast corner of La Costa Golf course, behind 7525 Gibraltar Street near Roundtree Apartments 5 290 <10 BA36-1 On La Costa Ave, 100 ft. south of Romeria Street and La Costa Avenue intersection 5 110 20 Site BA40 Site BA40 is an 84-inch RCP outlet located southwest of the Rancho Santa Fe and Melrose Drive intersection, currently in a construction site (Photo 8-5). Laboratory analysis yielded a total coliform count of 240,000 MPN/100 mL, fecal coliform at 130,000 MPN/100 mL, and enterococcus at 30,000 MPN/100 mL, all above their respective action levels. This site has historically had elevated levels of bacteria. T the upstream investigation at Site BA40 was begun by taking a water sample at the site and then tracing the flow upstream. Discharge at the site originates from three main lines, one flowing down Melrose Drive, one in a residential complex north of the site and one in a residential area to the northwest of the site. Samples were taken north of Site BA40 on Melrose both south and north of the Melrose Drive and Alga Road intersection. A line from the west of the actual site in Via Verano was also sampled. Samples were taken at various points along these lines; the sampling locations and their corresponding bacteria counts are displayed in the map and table below. Leaves, algae, and other organic material were noted at several points in the storm drain system upstream of Site BA40, but no direct sources of fecal matter were noted, and no E. coli counts were especially high. The main source of water to Site BA40 was excess irrigation water from lawns and community green spaces, and residents washing cars also contributes some water. It was concluded that over irrigation in combination with observed organic material was likely the main source of total coliform bacteria, but the upstream investigation did not conclusively pinpoint a source of bacteria of fecal origin. The area immediately downstream of the site is an open area, and it is possible that waste from wildlife that may access the storm drain system via the outfall at Site BA40 contributes to fecal coliform and enterococcus levels at the site. Photo 8-5 Site BA40 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 74 Site BA40 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) BA40 30 ft. southwest of the Melrose Drive and Rancho Santa Fe Road intersection (9/11/06) 24 260 20 BA40 30 ft. southwest of the Melrose Drive and Rancho Santa Fe Road intersection (9/18/06) 15 310 70 BA40-1 300 ft south of Alga Road at the Alga Road and Melrose Drive Intersection (9/11/06) <1.0 970 30 BA40-1 300 ft south of Alga Road at the Alga Road and Melrose Drive Intersection (9/14/06) <1.0 180 10 BA40-2 On Melrose Drive, 500 ft. north of Melrose Drive and Rancho Santa Fe intersection 1.0 270 <10 BA40-3 Between 6840 and 6842 Via Verano 3.0 450 <10 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 75 ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) BA40-4 On Melrose 500 ft. north of Alga and Melrose intersection, on right side of the street when facing south <1.0 420 20 BA40-5 On Via Marinero, North of Via Marinero and Via Verano intersection <1 310 <10 Site BA47 Site BA47 is a manhole located on Camino Alvaro, west of Rancho Santa Fe Boulevard. During the routine visit, the pH was measured at 5.6, below the action level of 6.5. This site has consistently had low pH values in the past. The follow-up visit found a pH of 5.2, still below the action level. The four sources of flow to the site are a line from the south, a main line from the west, a small line from the northwest, and a small pipe from the west. As in previous years, the small pipe from the west was identified as the source of the low pH. Previous investigations have also found low pH, consistent flow, and high conductivity readings for the water coming out of the small pipe, which indicates that it may drain groundwater. The City televised this pipe in October 2003 and found that it is an irrigation leach line from a residence. No illegal discharge or illicit connection was found at that time. The City field crew stated that the low pH could be the result of soils in the area, but additional tests would be required to confirm that theory. Site BA51 Site BA51 is in a natural conveyance located just downstream of three 84-inch RCPs that allow the flow to pass under Alga Road, between address numbers 2035 and 2043. The conveyance runs along the eastern side of La Costa Resort and Spa. Upon the inital visit to BA51, total coliform was found to be 50,000 MPN/100 mL, at the action level. No bacteria action level exceedances had been recorded at this site prior to 2006. During the upstream investigation, samples were taken at the site and farther upstream in the conveyance, as shown on the map below. Some organic material was present in the conveyance, but both sites had relatively low bacteria levels. Animal waste was observed next to Alga Road a few feet away from a residential home (Photo 8-6). The area did not appear to receive regular irrigation, so it is not likely to be a source of bacteria during dry weather. However, during wet weather conditions it could be a source of bacteria. This site has not historically had bacteria action level exceedances, and no major sources of bacteria were observed during the upstream investigation. The high total coliform count measured from the in the initial, routine site visit may have been caused by a transient flow or perhaps by decomposing organic material in the conveyance. Photo 8-6 Animal waste near storm drain leading to Site BA51 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 76 Base Data sources: USGS, SanGIS, SANDAG Site BA51 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) BA51 Between 2035 and 2043 Alga Road, east of El Camino Real 218 260 10 BA51-1 Between Lapis and Pointsettia on golf course side, east branch 200 20 <10 Site BV02 Site BV02 consists of two 36-inch RCP outlets located on the east side of State Street, north of the intersection of Laguna Drive and State Street. Laboratory analysis detected total coliform at 900,000 MPN/100 mL, above the action level. All other bacterial indicators were below their respective action levels. During both the initial visit and the follow-up visit the water was slow moving with bubble on the surface and a relatively large amount of trash and leaves in the water. Two main lines were identified flowing into Site BV02. One branch flows westward from I-5 along Laguna Drive. The other line flows in from the south along State Street but is a combination of two sub-branches. One sub-branch flows entirely along State Street, while CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 77 the other is slightly west of State Street and flows parallel to it. Both State Street lines merge just south of the State Street and Laguna Drive intersection. The line from the east had a moderate level of total coliform, and no E. coli was detected. A very small flow from the south line was also sampled. It was noted that the manhole just south of the intersection of Laguna Drive and State Street was dry, and what small flow was present in the south line came from the area north of Laguna Drive. The highest bacteria levels were measured at the site itself, and it is likely decomposing organic matter and trash at the site are the primary sources of total coliform (Photo 8-7). In 2005 signs of human habitation, such as blankets, were noted close to the site, but they were not noted in 2006. Site BV02 Upstream Investigation Photo 8-7 Organic matter and debris at Site BV02 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 78 ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) BV02 East side of State Street, south of the Carlsbad Boulevard and State Street intersection 2 310 60 BV02-1 100 ft. west of Madison Street and Laguna Drive intersection 1 240 <10 BV02-2 In the cul-de-sac at the back of 2551 State Street <1 70 <10 Site BV04A Site BV04A is an outlet discharging water directly into Buena Vista Lagoon in the Buena Vista Ecological Reserve. The nitrate level at this site was measured at 10 mg/L NO3-N during both the initial and follow-up visits. A manhole in the sidewalk next to the fence by the reserve, about 10 yards from the outlet itself, was opened so the pipe could be viewed. It was found that the water in the manhole and slightly upstream in the pipe was ponded, and there was no flow coming from farther upstream. Another manhole upstream was opened to confirm this, and it was dry. It appears that the pipe is cracked or corroded and that groundwater seepage in the pipe is the main source of water, and nitrate, to Site BV04A (Photo 8-8). Recommendations regarding this site can be found in Section 9. Site BV08 Site BV08 is an outlet on the south bank of Buena Vista Creek, just west of El Camino Real. The detergents level at this site was 1.5 mg/L MBAS during both routine and follow-up visits, above the action level of 1.0 mg/L. The first day that the exceedance was noted, the area upstream of the site was briefly investigated, but no obvious point sources were found. It was noted that the area was mostly composed of commercial shopping centers, while further upstream were mainly residential areas. The following day, after the follow-up visit to the site, a manhole upstream of the site, just east of El Camino Real on Hospital Way, was opened. The detergents concentration at this site was only 0.5 mg/L. Since this manhole is located immediately upstream of several commercial shopping centers, further investigation was conducted in these areas to look for possible sources. Some signs of uncontained washing were observed, such as ponded water behind some of the stores and a small refrigerator sitting outside drying, although no instances of washing were actually observed. It was concluded that elevated detergents at Site BV08 were likely the result of commercial activities at upstream shopping centers, see Section 9 for recommendations regarding this finding. Photo 8-8 A crack in the pipe allowing groundwater infiltration at Site BV04A. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 79 Site EN02C Site EN02C is a 39-inch diameter outfall located on the north bank of Encinas Creek, under the I-5 overpass. Nitrate and detergents were measured over their action levels during both routine and follow-up visits to this site. The main source of flow to this site is runoff from landscaping along I-5 that drains to the site via several storm drains along the freeway. Historically, high levels of nitrates have been observed at this site, and the most likely source is fertilizer in irrigation runoff from Caltrans landscaped areas. The orthophosphate phosphorus level was above the action level during the first visit, and during the follow-up visit it was not above the action level but was still relatively high. Orthophosphate phosphorus is a common component of fertilizers, and the measured phosphorus levels provide further indication that fertilizer in runoff is the source of the nitrate. No immediate source of detergents was noted, and it is not especially likely that any washing activities were taking place along I-5. High concentrations of negative ions, such as nitrate, are known to interfere with the MBAS method of measuring anionic surfactants. It is likely that the detergents reading was largely due to this kind of interference rather than the actual presence of a significant amount of anionic surfactants. Recommendations for this site can be found in Section 9. Site EN14 and Site EN14A Site EN14 is a manhole at the corner of Palomar Oaks Way and Camino Vida Roble. Site EN14 is an outlet in a canyon just downstream of Site EN14. The two sites typically have very different pH readings, as Site EN14A is at a much lower elevation than Site EN14 and is influenced by groundwater seepage. A low pH value, 5.4, was again observed during the initial visit to Site EN14A. This low pH is typically attributed to leakage from the closed landfill under Palomar Airport. Unlike in previous years, ammonia action level exceedances were found at both Site EN14 and Site EN14A in 2006. Site EN14 was sampled first, on August 8. An ammonia nitrogen level of more than 10 mg/L was measured at the site, triggering an immediate upstream investigation. A small lateral line from the east was dry, so the flow was traced back to the north along the main line on Palomar Oaks Way. The conveyance was followed upstream to the municipal golf course located to the north of the site, which was under construction at the time of the investigation. A water sample from an area drain on the golf course also had an ammonia level in excess of the ammonia field test kit’s upper detection limit of 10 mg/L. A follow-up visit to Site EN14 the next day, August 9, also found ammonia above the action level. The routine visit for Site EN14A was also conducted on August 9, during which the pH was measured at 5.4, as noted above, and ammonia nitrogen was measured at 6.5 mg/L. A follow-up visit for Site EN14A was conducted on August 10. Ammonia nitrogen was measured at 10 mg/L, somewhat higher than the day before. The pH was measured at 6.6, which is unusually high for the site and not outside the range considered acceptable for dry weather purposes. This is likely due to the influence of a high ammonia concentration at the site, as ammonia is a base and would act to raise the pH. Because abnormally high ammonia concentrations were traced to a municipal project, the field crew contacted the City. Elaine Lukey from the City and representatives from the golf course project met with the field crew on August 11 for additional sampling and to confirm that the golf course was indeed the source of ammonia. Some water was present in the lateral line from the east due to irrigation, but a sample of that water had a relatively negligible ammonia nitrogen concentration. As the field crew was preparing to take a CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 80 sample from Site EN14, a much larger flow, around 15 to 20 gpm, of brown, turbid water was observed at Site EN14. The field crew then moved upstream along Palomar Oaks Way, opening manholes to visually locate the source of turbid water. The source of turbid water was eventually traced to cart path washing at the golf course. While at the golf course, another sample of water was taken from the same area drain sampled earlier in the week. The measured ammonia nitrogen level was 10 mg/L. Discussions with the landscaper for the golf course revealed that turf was just being established at the course, and intensive irrigation and fertilization with ammonium sulfate were being conducted. After that initial phase, it was believed that ammonia levels in any runoff from the golf course would be relatively low. During follow-up investigations in September, Site EN14 was again visited to measure ammonia. The ammonia nitrogen level was measured at 0.4 mg/L, below the action level, which indicated that measures instituted to control ammonia discharges at the golf course had been effective. Site EN19 Site EN19 is a concrete channel located immediately east of 1949 Palomar Oaks Way. Laboratory analysis yielded a total coliform count of 130,000 MPN/100 mL, above the action level of 50,000 MPN/100 mL. No other bacteria indicators were above the action levels. This site drains a large surrounding commercial and light industrial area. Relatively low total coliform levels were recorded at the sites sampled during the upstream investigation, and E. coli was not detected at any of the sites. Upstream location EN19-3, a curb gutter which flows into EN19-2, had a moderate amount of total coliform. The gutter had high sediment, decomposing plant life, algae, and a small construction area immediately beside it (Photo 8-9). The relatively high total coliform density recorded during the initial site visit may have resulted from decomposition of organic material in the storm drain system upstream of the site or perhaps a transient flow. Photo 8-9 Curb runoff at Site EN19-3 CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 81 Site EN19 Upstream Investigation ID Location Flow (gpm) Total Coliform (CFU/mL) E. coli (CFU/mL) EN19 Beside 1949 Palomar Oaks Way 15 150 <10 EN19-1 On Palomar Oaks way behind 1979 Palomar Oaks Way 10 70 <10 EN19-2 Intersection of Palomar Oaks Way and Palomar Oaks Court, behind fence 10 90 <10 EN19-3 Corner of Camino Vida Roble and Las Palmas Drive <1 160 <10 EN19-4 On Camino Vida Roble across from “Carved Stone International,” next to bus stop 5 80 <10 Site EN31 Site EN31 is a manhole located in a canyon approximately 10 yards north of 1925 Palomar Oaks Way. The pH was measured below the action level of 6.5 during both the routine visit and the follow-up visit. This site has historically had low pH values, and investigations in previous years have pointed to groundwater affected by the landfill underneath Palomar Airport as the source. In 2006, visual observations were taken from the area around the site, but no specific causes of low pH were observed. The conductivity at the site was fairly high (over 6.2 mS/cm during both visits), and it was concluded that groundwater influenced by the closed landfill was again the source. Other sites in this area have often had low pH readings for the same reason. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 82 9.0 SUMMARY AND RECOMMENDATIONS 9.1.1 Summary of Field Screening and Laboratory Analysis Data Sixty primary monitoring locations were visited during the 2006 dry weather program, and, because Site BV15 was dry, an alternate site was selected to replace it. During field screening and lab sampling, 28 sites had at least one parameter test above its corresponding action level. Most sites had flowing water, with the flow rates ranging from less than one gpm to over 200 gpm. The pH readings at four of the sites fell below the action level of 6.5, and one site had a pH greater than 9.0. Some of the low pH readings may result from groundwater influenced by the closed landfill under Palomar Airport. Future studies may include mapping of the sites with low pH to see if they might be influenced by groundwater flow from the landfill or other sources. Ammonia concentrations were found to be at or above the action level of 1.0 mg/L NH3-N at six sites. At three of these sites, the ammonia nitrogen level was found to be below the action level upon follow-up within 24 hours. The high ammonia concentrations initially measured at sites EN14 and EN14A during routine visits and follow-up visits 24 hours later were found to be below the action level during later follow-up visits. Sites AH10, AH12, AH13, and EN02C had nitrate concentrations above the action level of 10 mg/L NO3-N this year, similar to previous years dating back to 2002. Two of the sampled sites had an orthophosphate concentration at or above the action level of 2.0 mg/L PO4-P, but the concentration dropped below the action level during the follow-up visits to both sites. Detergents were measured at or above the action level of 1.0 mg/L at two sites. Laboratory analyses were conducted at 15 sites, and bacteria action level exceedances were reported for 13 of them. Nine of these were for total coliforms only; note that total coliform is generally considered a poor indicator of fecal contamination. One site exceeded action levels for total and fecal coliforms, and three sites had exceedances for total coliforms, fecal coliforms, and enterococci. Similar to previous years, no measured dissolved metals values exceeded the California Toxics Rule benchmarks. None of the sites had detectable levels of the organophosphate pesticides diazinon or Chlorpyrifos. Neither surfactants nor oil and grease were detected in any of the laboratory samples. Materials such as plastic, paper containers, aluminum cans, glass bottles and Styrofoam were observed at 17 sites. Bubbles were observed at several sites, and sediment was deposited at nearly every site. Vegetative growth ranged from normal vegetation to no growth. Sites such as manholes lacked vegetation, while open channels and outlets exposed to sunlight typically had normal riparian growth. A variety of biological organisms were observed during site visits, including algae, snails, insects, fish, and crawfish. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 83 9.1.2 Summary of Upstream Investigation Data The table on the following page presents the conclusions based on the results of the upstream investigations conducted at 23 sites for the 2006 Dry Weather Monitoring Program. TABLE 9-1 SUMMARY OF UPSTREAM INVESTIGATIONS Upstream Investigation Target Constituent(s) Site Field Laboratory Results/Likely Source AH03 Total Coliform Decomposing organic materials in conjunction with over irrigation around Chinquapin Avenue. AH08 Total Coliform Decomposing organic material in storm drain on Cannon Road, 100 feet east of El Arbol Drive and Cannon Road intersection, or perhaps a transient flow. AH10 Nitrate Total Coliform, Fecal Coliform Nitrate may originate from the flower fields east of the Carlsbad Premium Outlets. Bacteria is most likely due to wildlife influence at open channel just upstream of the site. AH12 Nitrate Nitrate may originate from the flower fields east of the Carlsbad Premium Outlets. AH13 Nitrate Nitrate may originate from the flower fields east of the Carlsbad Premium Outlets. AH24 Total Coliform Decomposing organic matter, debris, and sediment observed in a manhole on Hillside Drive. This manhole is toward the end of a line that collects runoff from a residential area on Hillside Drive and northwest of Hillside Drive along Cordoba Place. AH31 Ammonia Decomposition of organic matter at the site itself, which is facilitated by back-up of water caused by excessive vegetation just downstream of the site. AH45 Total Coliform A flow from unknown source entering the conveyance between the south end of Van Allen Way and College Boulevard. Upstream testing reported a relatively high level of E. coli, and the source could be an illicit connection. AH46 Total Coliform, Fecal Coliform, Enterococcus Likely sources may include wildlife waste in the conveyance system close to El Camino Real and College Boulevard, pet waste from the residential area east of the site, and horse manure from the neighboring stables. BA06 Total Coliform Consistent irrigation runoff combined with decomposing landscaping waste, leaves, algae, and other organic matter along Rosemary Avenue and Snapdragon Drive. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 84 Upstream Investigation Target Constituent(s) Site Field Laboratory Results/Likely Source BA13 Total Coliform, Fecal Coliform, Enterococcus Total coliform was likely from decomposing organic material and trash noted in a number of upstream locations. A small sewage leak or animal waste in the conveyance along Dove Lane between the Carlsbad City Library and Moorhen Place is likely the source of fecal coliform and enterococcus. BA36 Total Coliform Transient flow or decomposing organic material. BA40 Total Coliform, Fecal Coliform, Enterococcus Decomposing organic material is likely the source of total coliform. No sources of fecal coliform or enterococcus were directly observed; wildlife entering the conveyance through the site, which is an outfall by an open area, may be contributors. BA47 pH Irrigation leach line from a residence. Previous investigation by the City found that the low pH could be the result of soils in the area, but additional tests would be required to confirm that theory BA51 Total Coliform Transient flow or decomposing organic material. BV02 Total Coliform Decomposing organic matter and trash at the site. BV04A Nitrate Groundwater seepage into a pipe just upstream of the site. BV08 Detergents No direct source was observed. Visual observations indicated that washing activities in the commercial area upstream of the site may be the source. EN02C Detergents, Nitrate Nitrate may originate come from irrigation and fertilization of landscaping in the area around the site. The high detergents level is believed to be indicative of interference with the test method caused by the high nitrate level, not the actual presence of a significant quantity of detergents. EN14 Ammonia EN14A Ammonia Over irrigation and fertilization at the municipal golf course. Follow-up investigations in September 2006 indicated that this problem had been resolved. EN19 Total Coliform Decomposition of organic material in the storm drain system upstream of the site or perhaps a transient flow. EN31 pH Groundwater potentially influenced by the closed landfill under Palomar Airport. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 85 9.2 Recommendations Based on the results of the year 2006 Dry Weather Field Screening Program for the City of Carlsbad, the following actions are recommended for consideration. 9.2.1 Education • Work with the horse stable located next to Site AH46 to provide education regarding proper management of manure. • Provide educational material to the residential area east of Site AH46, in the vicinity of Badger Lane, regarding over irrigation and proper cleanup of pet waste. • Educate residents in the neighborhood of Park Drive and Kelly Drive, upstream of Site AH24, regarding BMPs to minimize irrigation runoff. • Educate residents upstream of Site BA06, east of Batiquitos Drive, and along Rosemary Avenue regarding BMPs for irrigation. • Educate residents upstream of Site BA13, south of Plaza Paseo Real and west of El Camino Real about proper disposal of landscape waste and minimizing irrigation runoff. • Educate the residents living in the neighborhoods south of Alga Road and north of Site BA40, between Xana Way and Rancho Santa Fe Road, about reducing runoff from irrigation. 9.2.2 Inspection and Maintenance • Clean out the storm drain system upstream of sites AH03, AH08, AH10, AH24, AH45, AH46, BA06, BA13, BA36, BA40, BA51, BV02, and EN19, all of which had total coliform action level exceedances. Cleaning out the storm drain system should remove the decomposing organic material and debris that is typically the source of total coliform. Note that due to present restrictions on channel maintenance, such upstream cleaning may be limited where the conveyance is an earthen channel. • Establish a schedule for the routine removal of trash from sites AH03, AH08, AH11, AH12, AH18, AH30, AH31, AH45, BA27, BA34, BA40, BA43, BA51, BV02, BV08, EN14A, and EN20. Garbage accumulation and illegal dumping upstream of Site BA13 around the Plaza Paseo Real shopping center and at Site BV02 were particularly significant. • To the extent allowable, consider clearing out vegetation downstream of Site AH31. • Conduct inspections and/or education in the commercial complex upstream of Site BV08 to promote proper washing practices. • Consider specifically checking fertilization and cart path cleaning practices at the municipal golf course during routine municipal inspections. CITY OF CARLSBAD YEAR 2006 DRY WEATHER MONITORING PROGRAM PAGE 86 9.2.3 Further Investigation • Contact the company responsible for the maintenance practices of the flower fields east of the Carlsbad Premium Outlets. Work with the company to minimize irrigation runoff and to reduce nitrate levels downstream at sites AH10, AH12, and AH13. • Conduct an investigation upstream of Site AH45 to determine the source of water between the manhole at the south end of Van Allen Way and College Boulevard, where an illicit connection may exist. After the water source has been identified, take appropriate measures to address it. • Conduct further investigation on the line along Dove Lane between Moorhen Place and the Carlsbad City Library driveway, upstream of Site BA13. Consider using a video camera or other means to investigate the possibility of a small leak from the sewer system into the storm drain system in this section of the storm drain system. Because animal waste in the storm drain system could also be a cause of high bacteria counts in this line, the City may consider taking a sample from the line a few days after a major rain event, which should clean out the storm drain system, to see if bacteria levels are still high. • Consider further analysis of the conditions that lead to low pH in water from the irrigation leach line at Site BA47. • Coordinate with Caltrans and/or other potential contributors to investigate the source of water and nitrates at Site EN02C. Information should be obtained regarding the frequency and amount of irrigation and fertilizers used in landscaping in the area of Interstate 5. It should also be determined if irrigation is conducted along the east side of I-5. If so, work with the responsible party to reduce irrigation runoff to these areas. FIGURE 2 WATERSHED MAP OF THE CARLSBAD AREA, BROKEN INTO HYDROLOGIC SUBAREAS Appendix A Photographs of Sampling Locations Appendix B Laboratory Analytical Reports Appendix C Field Data Sheets Appendix A Photographs of Sampling Locations AH03 Photo 14 AH08 Photo 57 AH09 Photo 79 AH10 Photo 40 AH11 Photo 84 AH12 Photo 86 AH13 Photo 83 AH18 Photo 30 AH24 Photo 26 AH27 Photo 42 AH28 Photo 43 AH30 Photo 28 AH31 Photo 15 AH32 Photo 18 AH45 Photo 39 AH46 Photo 23 AH59 Photo 31 AH61 Photo 105 AH63 Photo 80 AH65 Photo 81 AH Creek-1 Photo 24 BA02 Photo 88 BA03 Photo 108 BA04 Photo 89 BA06 Photo 77 BA07 Photo 109 BA13 Photo 61 BA26 Photo 98 BA27 Photo 96 BA32 Photo 101 BA34 Photo 95 BA36 Photo 46 BA40 Photo 37 BA41 Photo 107 BA43 Photo 114 BA47 Photo 106 BA48 Photo 115 BA49 Photo 87 BA51 Photo 45 BA52 Photo 90 BV02 Photo 10 BV04A Photo 9 BV06 Photo 2 BV08 Photo 6 BV09 Photo 116 BV10 Photo 8 BV15 Photo 117 BV 16 Photo 1 BV Creek-1 Photo 13 EN02A Photo 74 EN02A-1 Photo 92 EN02B Photo 58 EN02C Photo 60 EN09 Photo 75 EN14 Photo 65 EN14A Photo 78 EN18 Photo 54 EN19 Photo 62 EN20 Photo 52 EN21 Photo 56 EN23 Photo 82 EN24 Photo 55 EN31 Photo 64 EN Creek-1 Photo 50 SM-Creek 1 Photo 48 Site IDBV Creek-1EN-02AEN-02A1EN-02BEN-02CEN-09EN-11EN-13EN-14EN-14AEN-16EN-17EN-18EN-19EN-20EN-21EN-22EN-22AEN-23EN-23AEN-24EN-30EN-311995pH 7.9 8.9 7.7 na na na 4.7 7.7 na 6.8 7.6 8.1 8.7 na na 7.6 na naTemperature 23.2 25.4 21.1 na na na 21.8 26 na 22.2 26.6 31.9 24 na na 21.7 na naAmmonia mg/l 0.07 0.1 0.12 na na na 0.61 0.2 na 0.42 0.23 0.08 0.1 na na 0.16 na naDetergents mg/l 0.5 0.5 0.5 na na na 0.75 0.8 na 1 0.5 0.75 0.5 na na 0.5 na naChlorine mg/l 0.6 0.3 0.2 na na na 0.2 0.6 na <.01 0.6 0.4 0.4 na na 0.6 na naCopper mg/l nd nd nd na na na nd nd na nd nd nd nd na na nd na naPhenols mg/l nd nd nd na na na nd nd na nd nd nd nd na na nd na na1996pH 8 8.9 7.6 na na 4.3 7.7 7.7 7.1 7.5 7.9 8.4 8 7.2 8.1 na naTemperature 23.6 25.5 23.4 na na 21.9 24 24 22.3 24.9 22.9 26.2 24 23.8 26 na naAmmonia mg/l 0.2 0.07 0.05 na na 0.02 0.1 0 nd 0.01 0.5 0.9 0 0.02 nd na naDetergents mg/l 0.5 0.5 0.25 na na 2 0.3 0.3 0.5 0.75 0.75 1 1 0.25 0.25 na naChlorine mg/l 0.6 0.1 0.1 na na 0.6 0.2 0.1 nd 0.2 nd 0.3 0 0.1 0.3 na naCopper mg/l nd nd nd na na nd nd nd nd nd nd nd nd nd nd na naPhenols mg/l nd nd nd na na nd nd nd nd nd nd nd nd nd nd na na1997pH 8.39 9.88 7.57 7.2 na 4.18 8.7 na 6.69 8.89 6.94 5.6 na na 4.42 6.92 na 7.25Temperature 25.3 32 26.2 25.3 na 23.2 27 na 22.4 27.8 22.4 25.8 na na 23.7 28.6 na 26Ammonia mg/l 4.03 0.05 0.05 3.01 na 0.57 0.1 na 4.38 0.03 0.14 2.65 na na 0.78 0.07 na 0.03Detergents mg/l 0.25 0.5 0.75 1 na 3 0.3 na 1.98 0.25 0.25 1 na na 0.75 1 na 0.5Chlorine mg/l 0.2 0.2 0.2 nd na 0.1 0.2 na nd 0.6 0.1 0.1 na na 0.1 0.2 na ndCopper mg/l nd nd nd nd na nd nd na nd nd nd nd na na nd nd na ndPhenols mg/l nd nd nd nd na nd nd na nd nd nd nd na na nd nd na nd1998pH 7.5 6.9 10.7 7.7 na 5.1 4.5 7.9 6.9 8.3 7.4 7.1 4.1 7.3 7.7Temperature 20 14 27 20 na 22 20 20 19 20 21 23 20 20 22Ammonia mg/l 0.4 nd 0.2 0.6 na 0.6 0.8 0.4 0.8 0.3 0.8 10 3.5 0.6 1Detergents mg/l 0.4 0.5 0.5 0.38 na 0.75 0.75 0.3 0.5 0.5 0.5 1.25 0.75 0.25 1.5Chlorine mg/l nd nd 0.1 nd na nd nd 0.1 nd nd nd nd nd nd ndCopper mg/l nd nd nd nd na nd nd nd nd nd nd nd 0.2 nd ndPhenols mg/l nd nd nd 0.3 na 0.2 0.1 0.1 0.4 0.2 0.2 0.3 1 0.2 0.41999pH 8.4 8.8 9.7 7.7 8 8.1 5.2 8.3 na 7.4 8.1 7.8 8 na na 5.6 8.1 na 7.8Temperature 24 30 29 22 25 21 23 25 na 20 23 23 22 na na 23 24 na 22Ammonia mg/l 0.6 1 0.3 0.3 0.6 4 0.6 0.3 na 0.4 0.2 0.5 0.2 na na 0.2 0.8 na 0.1Detergents mg/l 0.75 0.75 0.75 0.75 1.5 >3.0 0.75 0.3 na 0.5 0.25 0.5 0.5 na na 0.25 0.25 na 0.5Chlorine mg/l 0.6 0.6 0.6 0.3 0.2 0.1 nd 0.2 na nd 0.1 nd 0.2 na na nd 0.3 na 0.2Copper mg/l 0.2 0.2 0.1 nd nd 0.2 nd 0.1 na 0.1 nd 0.1 0.1 na na nd 0.1 na ndPhenols mg/l nd 0.2 nd 0.3 0.1 nd 0.4 0.2 na 0.2 0.1 0.4 0.1 na na nd 0.4 na 0.32000pH 8.0 7.8 8.5 7.3 7.4 8.1 4.6 7.5 6.9 7.4 7.2 6.7 4.3 7.2 7.2Temperature 28 12 32 22 24 31 23 29 23 29 23 24 23 27 22Ammonia mg/l 0.2 10 0.2 0.4 0.8 0.8 0.6 0.8 1.5 0.8 3.5 3.0 4.0 0.3 0.3Detergents mg/l 0.25 1.0 0.25 0.25 0.25 0.5 0.5 0.3 0.25 0.25 0.5 >3.0 0.75 0.25 0.25Chlorine mg/l 0.9 nd nd nd nd nd 0.1 0.1 nd nd nd <0.1 0.4 nd ndCopper mg/l nd nd nd 0.1 0.1 nd 0.1 nd 0.1 nd 0.1 0.02 0.1 nd 0.1Phenols mg/l nd 0.1 0.1 0.1 0.1 nd 0.2 nd 0.1 nd 0.1 0.2 0.1 0.1 0.1Table 1-1 (Continued)Summary of Historical Dry Weather Data Site IDBV Creek-1EN-02AEN-02A1EN-02BEN-02CEN-09EN-11EN-13EN-14EN-14AEN-16EN-17EN-18EN-19EN-20EN-21EN-22EN-22AEN-23EN-23AEN-24EN-30EN-312001pH 7.6 7.9 8.3 7.5 7 7.5 4.1 7.5 6.7 7.6 6.9 6.8 4.8 6.9 6.1Temperature 24 28 24 21 20 21 21 24 21 25 21 22 23 24 21Ammonia mg/l 0.8 1.0 0.6 2 0.6 0.5 2 0.3 0.5 0.5 0.4 0.2 0.8 0.8 0.5Detergents mg/l 0.25 3 0.25 0.5 0.5 3 1 0.3 0.5 0.25 0.5 0.25 0.25 0.25 0.25Chlorine mg/l nd 0.4 0.5 0.2 nd nd nd 0.4 nd 0.1 nd nd 0.1 nd ndCopper mg/l nd nd nd nd nd nd nd nd nd nd nd nd nd nd ndPhenols mg/l nd nd nd nd 0.1 nd nd nd nd nd nd nd nd nd nd2002Temp. °C 21 25.5 25 19 19 21 22 20 20 23 19 19.5 20 21pH 7.9 8.4 9.1 8.2 7.5 8.0 4.5 6.9 7.2 7.2 6 7.2 7.0 7.4Turbidity, NTU 21.27 34.22 1.68 0.93 44.48 16.11 0.51 176.0 6.83 26.79 37.95 44.56 27.36 2.78Conductivity, μmhos/cm 1361 4520 3200 5840 4230 2330 1105 7440 4960 4490 4960 3500 3660 5730Detergents, mg/l 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, mg/l 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,mg/l 0.8 0.2 2.5 >40 0.1 0.3 2.5 0.05 < 0.05 < 0.05 2 1.0 < 0.05 1.0Reactive Phosphorus, mg/l 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, mg/l Oil & Grease, mg/l Total Hardness, mg/lCadmium , mg/lCopper, mg/lLead, mg/l Zinc, mg/lDiazinon, μg/LChlorpyrifos, μg/LTotal Coliform, MPN/100mlFecal Coliform, MPN/100mlEnterococcus, MPN/100ml2003Temp. °C 22 23 31 26 21 21 21 22.5 24 24 24 22 23 22 23pH 7.6 7.3 7.1 7.8 7.3 7.2 7.2 6.2 6.9 7.3 7.0 6.7 6.0 7.2 6.9Turbidity, NTU 2.56 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, μmhos/cm 2680 1860 1600 36806040 5290 11,130 66002570 3840 20106210 942035106520Detergents, mg/l 0.13 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, mg/l 0.2 0.8 1.0 0.2 0.2 0.3 0.4 0.6 0.4 0.2 0.2 0.63.50.4 0.4Nitrate,mg/l 0.8 0.3 0.1 0.8 40 0.3 1.5 2.0 0.4 0.8 0.8 1.5 1.5 0.3 0.8Reactive Phosphorus, m0.07 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, mg/l nd nd nd ndOil & Grease, mg/l nd nd nd ndTotal Hardness, mg/l 653 800 1680 979Cadmium , mg/l nd nd nd ndCopper, mg/l nd nd nd ndLead, mg/l nd nd nd ndZinc, mg/l nd nd 0.022 0.022Diazinon, μg/L 0.74 nd nd ndChlorpyrifos, μg/L nd nd nd ndTotal Coliform, MPN/1005,000 8,000 5,000 5,000Fecal Coliform, MPN/1002,300 5,000 3,000 3,000Enterococcus, MPN/100 nd 800 230 80Table 1-1 (Continued)Summary of Historical Dry Weather Data Site IDBV Creek-1EN-02AEN-02A1EN-02BEN-02CEN-09EN-11EN-13EN-14EN-14AEN-16EN-17EN-18EN-19EN-20EN-21EN-22EN-22AEN-23EN-23AEN-24EN-30EN-312004Temp. °C 20.120 25 23 20 21 22.5 22 22.5 23.2 21 22 22 23.4 22pH 8.1 7.7 7.2 9 8.2 7.5 7.8 4.9 7.3 7.7 7.2 7.2 4.2 7.7 6.9Turbidity, NTU 2.05 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, μmhos/cm 2000 920 2080 2500 4050 3150 3140 6580 1650 2560 4450 1120 6250 2640 4620Detergents, mg/l 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, mg/l 0.1 0.8 0.2 0.2 0.1 0.2 0.4 0.8 0.4 0.4 0.6 0.3 2 0.3 0.3Nitrate,mg/l 2.5 2.5 3.75 4 75 3 1.25 3.8 2.5 1.25 1.25 3.75 2.5 1.25 3.75Reactive Phosphorus, mg 0.03 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, mg/l ND ND ND NDOil & Grease, mg/l ND ND ND NDTotal Hardness, mg/l 695 822 1360 1040Cadmium , mg/l ND ND ND NDCopper, mg/l ND ND ND NDLead, mg/l ND ND ND NDZinc, mg/l ND ND ND NDDiazinon, μg/L ND ND ND NDChlorpyrifos, μg/L ND ND ND NDTotal Coliform, MPN/100m17000 13000 30000 17000ecal Coliform, MPN/100m40 300 1100 800Enterococcus, MPN/100m20 140 270 130Table 1-1 (Continued)Summary of Historical Dry Weather Data EN Creek-1 EN Creek-1247.34.4263100.380.30.10.07ndnd1270nd0.014ndndndnd30,00030,00080 EN Creek-1207.410.0626900.250.41.250.16NDND900ND0.028ND0.028NDND220002400500 GRAPH 4-1: Temperature Action Level is Best Professional Judgment05101520253035AH03AH04AH04 (follow up)AH08AH09AH10 AH10(follow up)AH11AH12AH12(follow-up)AH13AH13 (follow-up)AH18 AH18(follow-up)AH24AH27AH28AH30AH31AH31(follow-up)AH32AH45AH46AH46(follow-up)AH59AH61AH63AH65BA02BA03BA04BA06BA06(follow-up)BA07BA07(follow-up)BA13BA26BA27BA32BA32(follow-up)BA34BA36BA40BA41BA43BA47BA47(follow-up)BA48BA49BA51BA52BV02BV04ABV04A (Follow-BV06BV08BV08(follow-up)BV09BV10BV15*BV16EN02AEN02BEN02CEN02C(follow up)EN09EN14EN14(follow up)EN14AEN14A(follow up)EN18EN19EN20EN21EN21(follow up)EN23EN24EN31EN31(follow up)Site IDTemperature (OC) GRAPH 4-2: pHAction Level is > 9.0 or < 6.5 0.02.04.06.08.010.0AH03AH04AH04 (follow up)AH08AH09AH10 AH10(follow up)AH11AH12AH12(follow-up)AH13AH13 (follow-up)AH18 AH18(follow-up)AH24AH27AH28AH30AH31AH31(follow-up)AH32AH45AH46AH46(follow-up)AH59AH61AH63AH65BA02BA03BA04BA06BA06(follow-up)BA07BA07(follow-up)BA13BA26BA27BA32BA32(follow-up)BA34BA36BA40BA41BA43BA47BA47(follow-up)BA48BA49BA51BA52BV02BV04ABV04A (Follow-BV06BV08BV08(follow-up)BV09BV10BV15*BV16EN02AEN02BEN02CEN02C(follow up)EN09EN14EN14(follow up)EN14AEN14A(follow up)EN18EN19EN20EN21EN21(follow up)EN23EN24EN31EN31(follow up)Site IDpH< 6.5 > 9.0 GRAPH 4-3: TurbidityAction Level is Best Professional Judgment020406080100120140160180AH03AH04AH04 (follow up)AH08AH09AH10 AH10(follow up)AH11AH12AH12(follow-up)AH13AH13 (follow-up)AH18 AH18(follow-up)AH24AH27AH28AH30AH31AH31(follow-up)AH32AH45AH46AH46(follow-up)AH59AH61AH63AH65BA02BA03BA04BA06BA06(follow-up)BA07BA07(follow-up)BA13BA26BA27BA32BA32(follow-up)BA34BA36BA40BA41BA43BA47BA47(follow-up)BA48BA49BA51BA52BV02BV04ABV04A (Follow-BV06BV08BV08(follow-up)BV09BV10BV15*BV16EN02AEN02BEN02CEN02C(follow up)EN09EN14EN14(follow up)EN14AEN14A(follow up)EN18EN19EN20EN21EN21(follow up)EN23EN24EN31EN31(follow up)Site IDTurbidity (NTU) GRAPH 4-4: ConductivityAction Level is Best Professional Judgment0.002.004.006.008.0010.0012.0014.0016.00AH03AH04AH04 (follow up)AH08AH09AH10 AH10(follow up)AH11AH12AH12(follow-up)AH13AH13 (follow-up)AH18 AH18(follow-up)AH24AH27AH28AH30AH31AH31(follow-up)AH32AH45AH46AH46(follow-up)AH59AH61AH63AH65BA02BA03BA04BA06BA06(follow-up)BA07BA07(follow-up)BA13BA26BA27BA32BA32(follow-up)BA34BA36BA40BA41BA43BA47BA47(follow-up)BA48BA49BA51BA52BV02BV04ABV04A (Follow-BV06BV08BV08(follow-up)BV09BV10BV15*BV16EN02AEN02BEN02CEN02C(follow up)EN09EN14EN14(follow up)EN14AEN14A(follow up)EN18EN19EN20EN21EN21(follow up)EN23EN24EN31EN31(follow up)Site IDConductivity (μmhos/cm) GRAPH 4-5: Ammonia (NH3-N)Action Level = 1.0 mg/L012345AH03AH04AH04 (follow up)AH08AH09AH10 AH10(follow up)AH11AH12AH12(follow-up)AH13AH13 (follow-up)AH18 AH18(follow-up)AH24AH27AH28AH30AH31AH31(follow-up)AH32AH45AH46AH46(follow-up)AH59AH61AH63AH65BA02BA03BA04BA06BA06(follow-up)BA07BA07(follow-up)BA13BA26BA27BA32BA32(follow-up)BA34BA36BA40BA41BA43BA47BA47(follow-up)BA48BA49BA51BA52BV02BV04ABV04A (Follow-BV06BV08BV08(follow-up)BV09BV10BV15*BV16EN02AEN02BEN02CEN02C(follow up)EN09EN14EN14(follow up)EN14AEN14A(follow up)EN18EN19EN20EN21EN21(follow up)EN23EN24EN31EN31(follow up)Site IDNH3-N (mg/L))1.0 mg/L GRAPH 4-6: Detergents (Methylene Blue Active Substances)Action Level = 1.0 mg/L0.00.20.40.60.81.01.21.41.6AH03AH04AH04 (follow up)AH08AH09AH10 AH10(follow up)AH11AH12AH12(follow-up)AH13AH13 (follow-up)AH18 AH18(follow-up)AH24AH27AH28AH30AH31AH31(follow-up)AH32AH45AH46AH46(follow-up)AH59AH61AH63AH65BA02BA03BA04BA06BA06(follow-up)BA07BA07(follow-up)BA13BA26BA27BA32BA32(follow-up)BA34BA36BA40BA41BA43BA47BA47(follow-up)BA48BA49BA51BA52BV02BV04ABV04A (Follow-BV06BV08BV08(follow-up)BV09BV10BV15*BV16EN02AEN02BEN02CEN02C(follow up)EN09EN14EN14(follow up)EN14AEN14A(follow up)EN18EN19EN20EN21EN21(follow up)EN23EN24EN31EN31(follow up)Site IDMBAS (mg/L)1.0 mg/L GRAPH 4-7: Nitrate (NO3-N)Action Level = 10.0 mg/L020406080100120AH03AH04AH04 (follow up)AH08AH09AH10 AH10(follow up)AH11AH12AH12(follow-up)AH13AH13 (follow-up)AH18 AH18(follow-up)AH24AH27AH28AH30AH31AH31(follow-up)AH32AH45AH46AH46(follow-up)AH59AH61AH63AH65BA02BA03BA04BA06BA06(follow-up)BA07BA07(follow-up)BA13BA26BA27BA32BA32(follow-up)BA34BA36BA40BA41BA43BA47BA47(follow-up)BA48BA49BA51BA52BV02BV04ABV04A (Follow-BV06BV08BV08(follow-up)BV09BV10BV15*BV16EN02AEN02BEN02CEN02C(follow up)EN09EN14EN14(follow up)EN14AEN14A(follow up)EN18EN19EN20EN21EN21(follow up)EN23EN24EN31EN31(follow up)Site IDNO3-N (mg/L)10 mg/L GRAPH 4-8: Orthophosphate Phosphorus (PO4-P)Action Level = 2.0 mg/L0.00.51.01.52.02.53.0AH03AH04AH04 (follow up)AH08AH09AH10 AH10(follow up)AH11AH12AH12(follow-up)AH13AH13 (follow-up)AH18 AH18(follow-up)AH24AH27AH28AH30AH31AH31(follow-up)AH32AH45AH46AH46(follow-up)AH59AH61AH63AH65BA02BA03BA04BA06BA06(follow-up)BA07BA07(follow-up)BA13BA26BA27BA32BA32(follow-up)BA34BA36BA40BA41BA43BA47BA47(follow-up)BA48BA49BA51BA52BV02BV04ABV04A (Follow-BV06BV08BV08(follow-up)BV09BV10BV15*BV16EN02AEN02BEN02CEN02C(follow up)EN09EN14EN14(follow up)EN14AEN14A(follow up)EN18EN19EN20EN21EN21(follow up)EN23EN24EN31EN31(follow up)Site No.PO4-P (mg/L)2.0 mg/L Appendix B Laboratory Analytical Reports Datasharing Format for Dry Weather Monitoring 1. Site DescriptionField Name Copermittee StationID StationType Location WatershedCAAH03DWMEast of railroad tracks, south of Chinquapin Avenue, outfall into Agua Hedionda LagoonCarlsbadCAAH04DWMBehind 5600 Avenida Encinas near railroad tracksCarlsbadCAAH08DWMInside Encinas Wastewater Plant, east of plant tower, at south end of open channel- outfallCarlsbadCAAH09DWMBehind 5115 Building Avenida Encinas CarlsbadCAAH10 DWMWest of Avenida Encinas, near Manzano/El Arbol intersection, near railroad tracksCarlsbadCAAH11DWMMain line east of I-5, south of Cannon Road, west of the Car Country Carlsbad signCarlsbadCAAH12DWMConcrete channel east of I-5, west of the Ken Grody Ford parking lot off Paseo Del NorteCarlsbadCAAH13DWMConcrete channel west of Paseo del Norte, approximately 250 feet north of Pea Soup Anderson’sCarlsbadCAAH18 DWMSouth of the Park Drive and Valencia Avenue IntersectionCarlsbadCAAH24DWMKelly and Park Drive IntersectionCarlsbadCAAH27DWMTamarack and Pontiac Ave. intersection, north of TamarackCarlsbadCAAH28DWM50 yards east of the La Portalada Drive and Tamarack Avenue intersection, on the north side of Tamarack Ave.CarlsbadCAAH30DWMEast of Sierra Morena Avenue, south of ValewoodCarlsbadCAAH31DWMSouth of Chesnut, east of Sierra Morena AvenueCarlsbad01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site DescriptionCAAH32DWMIntersection of Don Arturo and Don Porifirio Drive (in gated community), off of El Camino Real and Rancho Carlsbad Drive intersectionCarlsbadCAAH45DWMAston Ave., behind building 1812 Acushnet Company, north east of the pondCarlsbadCAAH46DWMOutfall located at the north of the horse stable on Sunny Creek RdCarlsbadCAAH59DWMSedimentation basin, approximately 1200 feet north of El Fuerte StreetCarlsbadCAAH61DWMNortheast of 2875 Loker AvenueCarlsbadCAAH63DWMTamarack Ave., Hillside Dr., Park Dr., south of Calavo Ct., in east sidewalkCarlsbadCAAH65DWMTamarack Ave., Pontiac Dr., across from South Hampton Rd.CarlsbadCABA02DWMDown in the sediment basin at the southwest corner of Navigator Cir. and Windrose CirCarlsbadCABA03DWMEnd of Gabbiano on Batiquitos Lagoon TrailCarlsbadCABA04DWMIn front of 7017 Nutmeg WayCarlsbadCABA06DWMBatiquitos Drive, midway between Pointsettia Lane and Daisy AvenueCarlsbadCABA07DWMNortheast of the intersection of Buttercup Road and Seascape DriveCarlsbadCABA13DWMDebris basin outlet to Batiquitos Lagoon, southwest of El Camino Real and Arenal IntersectionCarlsbadCABA26DWMBetween 2526 and 2532 Unicornio StreetCarlsbadCABA27DWM100 feet into the canyon near the El Fuerte and Chorlito IntersectionCarlsbadCABA32DWMIn front of 2927 Luciernaga StreetCarlsbad01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site DescriptionCABA34DWMSouth of Vista Mariana, in La Costa Golf CourseCarlsbadCABA36DWMSoutheast corner of La Costa Golf Course behind 7525 Gibraltar Street near Round Tree ApartmentsCarlsbadCABA40DWM30 feet southwest of the Melrose Drive and Rancho Santa Fe Road intersectionCarlsbadCABA41DWM(Northern edge) La Costa Canyon Park, in canyon; across from 3015 Pueblo StreetCarlsbadCABA43DWM30 yards north of the El Camino Real and Levante St. intersectionCarlsbadCABA47DWMRancho Santa Fe Blvd. and Camino Alvaro intersectionCarlsbadCABA48DWM500 feet south of the intersection of Camino De Los Coches and Rancho Sante Fe RoadCarlsbadCABA49DWMNorthwest of Batiquitos Lagoon, east of Carlsbad Blvd. Carlsbad01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site DescriptionCABA51DWMAlga Rd., east of El Camino Real, between 2035 and 2043CarlsbadCABA52DWMBatiquitos Dr., east of Golden Star Lane, north of street inside detention basinCarlsbadCABV02DWMEast side of State St., south of the Carlsbad Blvd. and State St. intersectionCarlsbadCABV04ADWMEast of Buena Vista Lagoon Ecological Reserve, on the east bankCarlsbadCABV06DWM50 feet west of the S. Vista Way Bridge on the south side of Buena Vista CreekCarlsbadCABV08DWMSouth bank of Buena Vista Creek, ten yards west of El Camino RealCarlsbadCABV09DWM50 yards north of the El Camino Real and Carlsbad Village Drive intersection on the center dividerCarlsbadCABV10DWMSouthwest corner of the Carlsbad Village Drive and El Camino Real intersectionCarlsbadCABV15DWMLaguna Dr. and State St. intersection, across from 2531 State St.CarlsbadCABV16DWMMarron Rd. Monroe St. intersection, across from The Olive Garden Restaurant CarlsbadCAEN02ADWMWest of 6030 Avenida Encinas east of the Rail Road tracksCarlsbadCAEN02BDWMInside Encinas Wastewater PlantCarlsbadCAEN02CDWMNorth bank of Encinas Creek, underneath I-5 overpass. Access through Wastewater PlantCarlsbadCAEN09DWMEncinas Creek, south of Palomar Airport Road, on Laurel Tree RoadCarlsbadCAEN14DWMCorner of Palomar Oaks Way and Camino Vida Roble, near 1911 Palomar Oaks WayCarlsbad01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site DescriptionCAEN14ADWM30 yards west of 1911 Palomar Oaks Way, in the canyonCarlsbadCAEN18DWMBehind 1979 Palomar Oaks WayCarlsbadCAEN19DWMBeside 1949 Palomar Oaks WayCarlsbadCAEN20DWMAcross from 1979 Palomar Oaks WayCarlsbadCAEN21DWMCamino Vida Roble, midway between Palomar Airport Road and Owens AvenueCarlsbadCAEN23DWMNorthwest corner of Yarrow Drive and Camino Vida Roble intersectionCarlsbadCAEN24DWMBetween 2225 and 2265 Camino Vida Roble, in front of the Post OfficeCarlsbadCAEN31DWM10 yards north of 1925 Palomar Oaks Way, in the canyonCarlsbad01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site DescriptionHSALatitude Longitude TBPage TBGrid LandUse_1 LandUse_2 Convey_Type904.31 33.14596 -117.33774 1106F7Residential Commercial Outlet904.31 33.12646 -117.32719 1126H3Commercial Industrial Concrete Channel904.31 33.13670 -117.33414 1126F1Commercial Commercial Outlet904.31 33.13181 -117.32989 1126G2Commercial Industrial Manhole904.31 33.12750 -117.32837 1126G3Agricultural Commercial Earthen Channel904.51 33.12992 -117.32629 1126H2Commercial Agricultural Outlet904.51 33.12715 -117.32454 1126H3Commercial Agricultural Outlet904.4 33.12558 -117.32269 1127H3Commercial Agricultural Outlet904.31 33.14305 -117.31562 1106J7Residential Residential Outlet904.31 33.14657 -117.31071 1106J7Open Residential Concrete Channel904.31 33.15648 -117.30696 1107A6Residential Open Concrete Channel904.31 33.15580 -117.31043 1106J6Residential Residential Concrete Channel904.21 33.16401 -117.31456 1106J5Open Residential Outlet904.21 33.16592 -117.31474 1106J4Open Residential Outlet01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site Description904.31 33.15163 -117.29086 1107B6Residential Open Concrete Channel904.31 33.13513 -117.29001 1127C2Commercial Commercial Outlet904.31 33.14647 -117.28160 1107C7Residential Open Outlet904.31 33.13639 -117.25484 1127G2Open Commercial Earthen Channel904.31 33.13274 -117.24828 1127G2Commercial Industrial Manhole904.31 33.15759 -117.30788 1106G7Residential Residential Manhole904.31 33.15759 -117.29693 1106J5Residential Residential Manhole904.51 33.09100 -117.30803 1147A1Residential Commercial Outlet904.51 33.09381 -117.30159 1127A7Residential Open Outlet904.51 33.10364 -117.30452 1127A6Residential Residential Manhole904.51 33.10336 -117.30500 1127A6Residential Commercial Manhole904.51 33.10616 -117.30569 1127A6Residential Residential Manhole904.51 33.09458 -117.26958 1127E7Residential Commercial Outlet904.51 33.10827 -117.25158 1127G5Residential Residential Catch Basin904.51 33.11274 -117.24479 1127H4Residential Open Outlet904.51 33.10695 -117.24141 1127H5Residential Open Manhole01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site Description904.51 33.09163 -117.25123 1127G7Residential Residential Outlet904.51 33.08759 -117.24641 1147H1Residential Open Outlet904.51 33.10542 -117.22543 1128A5Commercial Residential Outlet904.51 33.08944 -117.24271 1147H1Residential Parks Outlet904.51 33.07964 -117.26606 1147F2Residential Open Outlet904.51 33.06908 -117.24709 1147H3Residential Residential Manhole904.51 33.07415 -117.23988 1147H3Residential Residential Outlet904.51 33.08897 -117.31200 1146J1Open Residential Manhole01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site Description904.51 33.10195 -117.26147 1127F6Parks Residential Natural Creek904.51 33.09338 -117.28979 1127C7Parks (Golf Course) Residential Outlet904.21 33.16566 -117.35410 1106D4Commercial Industrial Outlet904.21 33.17765 -117.34219 1106E3Commercial Open Outlet904.21 33.18039 -117.32911 1106G2Commercial Residential Outlet904.21 33.18050 -117.32729 1106G2Commercial Residential Outlet904.21 33.17264 -117.32323 1106H3Residential Commercial Manhole904.21 33.14146 -117.32301 1106H4Residential Commercial Outlet904.21 33.16552 -117.35310 1106D5Commercial Industrial Manhole904.21 33.17622 -117.33686 1106F3Residential Open Manhole904.40 33.11890 -117.32378 1126H4Commercial Industrial Outlet904.40 33.11591 -117.32017 1126H4Industrial Commercial Concrete Channel904.40 33.11633 -117.31915 1126H4Industrial Commercial Outlet904.40 33.12222 -117.30013 1127A3Open Commercial Natural Creek904.40 33.12365 -117.28971 1127D4Industrial Commercial Manhole01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site Description904.40 33.12352 -117.29037 1127D4Industrial Commercial Outlet904.40 33.11787 -117.28266 1127D4Commercial Open Outlet904.40 33.11903 -117.28593 1127C4Commercial Open Concrete Channel904.40 33.11908 -117.28231 1127D4Commercial Open Outlet904.31 33.12132 -117.29228 1127D3Commercial Industrial Manhole904.40 33.11935 -117.27332 1127E3Commercial Industrial Outlet904.40 33.11906 -117.27238 1127E4Industrial Commercial Catch Basin904.40 33.12226 -117.29144 1127D4Commercial Industrial Manhole01/18/2007 Datasharing Format for Dry Weather Monitoring 4. Analytical ResultsField Name Copermittee StationID StationType SampleEventType Date Time LabSampleMatrix AnalyteCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterCadmium DissCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterChlorpyrifosCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterCopper DissCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterDiazinonCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterEnterococcusCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterFecal ColiformCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterHardness Total as CaCO3CAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterLead DissCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterMBASCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterOil & GreaseCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterTotal ColiformCAAH03DWM Field Screening7/26/06 11:35 EnviroMatrix AnalyWaterZinc DissCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterCadmium DissCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterChlorpyrifosCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterCopper DissCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterDiazinonCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterEnterococcusCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterFecal ColiformCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterHardness Total as CaCO3CAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterLead DissCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterMBASCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterOil & GreaseCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterTotal ColiformCAAH08DWM Field Screening8/8/06 9:20 EnviroMatrix AnalyWaterZinc DissCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterCadmium DissCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterChlorpyrifosCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterCopper DissCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterDiazinonCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterEnterococcusCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterFecal ColiformCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterHardness Total as CaCO3CAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterLead DissCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterMBASCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterOil & GreaseCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterTotal ColiformCAAH10 DWM Field Screening7/28/06 12:30 EnviroMatrix AnalyWaterZinc DissCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterCadmium DissCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterChlorpyrifosCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterCopper DissCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterDiazinonCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterEnterococcusCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterFecal ColiformCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterHardness Total as CaCO3CAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterLead DissCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterMBASCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterOil & GreaseCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterTotal ColiformCAAH24DWM Field Screening7/27/06 12:20 EnviroMatrix AnalyWaterZinc DissCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterCadmium DissCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterChlorpyrifos01/18/2007 Datasharing Format for Dry Weather Monitoring 4. Analytical ResultsCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterCopper DissCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterDiazinonCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterEnterococcusCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterFecal ColiformCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterHardness Total as CaCO3CAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterLead DissCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterMBASCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterOil & GreaseCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterTotal ColiformCAAH45DWM Field Screening7/28/06 11:40 EnviroMatrix AnalyWaterZinc DissCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterCadmium DissCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterChlorpyrifosCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterCopper DissCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterDiazinonCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterEnterococcusCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterFecal ColiformCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterHardness Total as CaCO3CAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterLead DissCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterMBASCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterOil & GreaseCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterTotal ColiformCAAH46DWM Field Screening7/27/06 10:40 EnviroMatrix AnalyWaterZinc DissCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterCadmium DissCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterChlorpyrifosCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterCopper DissCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterDiazinonCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterEnterococcusCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterFecal ColiformCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterHardness Total as CaCO3CABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterLead DissCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterMBASCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterOil & GreaseCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterTotal ColiformCABA06DWM Field Screening8/9/06 12:40 EnviroMatrix AnalyWaterZinc DissCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterCadmium DissCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterChlorpyrifosCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterCopper DissCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterDiazinonCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterEnterococcusCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterFecal ColiformCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterHardness Total as CaCO3CABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterLead DissCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterMBASCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterOil & GreaseCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterTotal ColiformCABA13DWM Field Screening8/9/06 11:45 EnviroMatrix AnalyWaterZinc DissCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterCadmium DissCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterChlorpyrifosCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterCopper DissCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterDiazinonCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterEnterococcusCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterFecal Coliform01/18/2007 Datasharing Format for Dry Weather Monitoring 4. Analytical ResultsCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterHardness Total as CaCO3CABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterLead DissCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterMBASCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterOil & GreaseCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterTotal ColiformCABA36DWM Field Screening8/7/06 9:35 EnviroMatrix AnalyWaterZinc DissCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterCadmium DissCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterChlorpyrifosCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterCopper DissCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterDiazinonCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterEnterococcusCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterFecal ColiformCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterHardness Total as CaCO3CABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterLead DissCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterMBASCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterOil & GreaseCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterTotal ColiformCABA40DWM Field Screening7/28/06 10:05 EnviroMatrix AnalyWaterZinc DissCABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterCadmium DissCABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterChlorpyrifosCABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterCopper DissCABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterDiazinonCABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterEnterococcusCABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterFecal ColiformCABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterHardness Total as CaCO3CABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterLead DissCABA51DWM Field Screening8/7/06 8:50 EnviroMatrix AnalyWaterMBASCABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterOil & GreaseCABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterTotal ColiformCABA51DWM Field Screening8/7/06 8/7/06 EnviroMatrix AnalyWaterZinc DissCABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterCadmium DissCABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterChlorpyrifosCABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterCopper DissCABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterDiazinonCABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterEnterococcusCABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterFecal ColiformCABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterHardness Total as CaCO3CABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterLead DissCABV02DWM Field Screening7/26/06 9:20 EnviroMatrix AnalyWaterMBASCABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterOil & GreaseCABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterTotal ColiformCABV02DWM Field Screening7/26/06 7/26/06 EnviroMatrix AnalyWaterZinc DissCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterCadmium DissCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterChlorpyrifosCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterCopper DissCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterDiazinonCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterEnterococcusCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterFecal ColiformCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterHardness Total as CaCO3CAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterLead DissCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterMBASCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterOil & Grease01/18/2007 Datasharing Format for Dry Weather Monitoring 4. Analytical ResultsCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterTotal ColiformCAEN02BDWM Field Screening8/8/06 10:30 EnviroMatrix AnalyWaterZinc DissCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterCadmium DissCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterChlorpyrifosCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterCopper DissCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterDiazinonCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterEnterococcusCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterFecal ColiformCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterHardness Total as CaCO3CAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterLead DissCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterMBASCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterOil & GreaseCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterTotal ColiformCAEN09DWM Field Screening8/9/06 10:40 EnviroMatrix AnalyWaterZinc DissCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterCadmium DissCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterChlorpyrifosCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterCopper DissCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterDiazinonCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterEnterococcusCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterFecal ColiformCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterHardness Total as CaCO3CAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterLead DissCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterMBASCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterOil & GreaseCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterTotal ColiformCAEN19DWM Field Screening8/8/06 12:15 EnviroMatrix AnalyWaterZinc Diss01/18/2007 Datasharing Format for Dry Weather Monitoring 4. Analytical ResultsMethod Qualifier Result ReportingLimit Unit %SolidEPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020None95 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone5,00020 MPN/100mL -99SM 9221 B.ENone3,00020 MPN/100mL -99EPA 200.7None549100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone170,000200 MPN/100mL -99EPA 6020None3720 ug/L -99EPA 6020 ND -995 ug/L -99EPA 8141A ND -990.05 ug/L -99EPA 6020None65 ug/L -99EPA 8141A ND -990.05 ug/L -99SM 9230 A, BNone23020 MPN/100mL -99SM 9221 B.ENone1,70020 MPN/100mL -99EPA 200.7None271100 mg/L -99EPA 6020 ND -995 ug/L -99SM5540 C ND -990.5 mg/L -99EPA 1664 ND -995 mg/L -99SM 9221 B.ENone50,000200 MPN/100mL -99EPA 6020None3120 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020None145 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone80020 MPN/100mL -99SM 9221 B.ENone23,00020 MPN/100mL -99EPA 200.7None468100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone300,000200 MPN/100mL -99EPA 6020None2920 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone5,00020 MPN/100mL -99SM 9221 B.ENone3,00020 MPN/100mL -99EPA 200.7None1590100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone500,000200 MPN/100mL -99EPA 6020None3420 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -9901/18/2007 Datasharing Format for Dry Weather Monitoring 4. Analytical ResultsEPA 6020None55 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone3,00020 MPN/100mL -99SM 9221 B.ENone5,00020 MPN/100mL -99EPA 200.7None830100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone300,000200 MPN/100mL -99EPA 6020ND-9920 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020None75 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, B>160,00020 MPN/100mL -99SM 9221 B.ENone130,00020 MPN/100mL -99EPA 200.7None1790100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone900,000200 MPN/100mL -99EPA 6020None4620 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020None95 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone23020 MPN/100mL -99SM 9221 B.ENone8,00020 MPN/100mL -99EPA 200.7None448100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone80,000200 MPN/100mL -99EPA 6020ND-9920 ug/L -99EPA 6020None215 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone13,00020 MPN/100mL -99SM 9221 B.ENone90,00020 MPN/100mL -99EPA 200.7None3400100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone240,000200 MPN/100mL -99EPA 6020None9420 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020None85 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone1,30020 MPN/100mL -99SM 9221 B.ENone3,00020 MPN/100mL -9901/18/2007 Datasharing Format for Dry Weather Monitoring 4. Analytical ResultsEPA 200.7None2110100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone80,000200 MPN/100mL -99EPA 6020ND-9920 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone30,00020 MPN/100mL -99SM 9221 B.ENone130,00020 MPN/100mL -99EPA 200.7None892100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone240,000200 MPN/100mL -99EPA 6020None2120 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone2,30020 MPN/100mL -99SM 9221 B.ENone50020 MPN/100mL -99EPA 200.7None2010100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone50,000200 MPN/100mL -99EPA 6020ND-9920 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020None55 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone2,30020 MPN/100mL -99SM 9221 B.ENone5,00020 MPN/100mL -99EPA 200.7None395100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone900,000200 MPN/100mL -99EPA 6020None9620 ug/L -99EPA 6020 ND -995 ug/L -99EPA 8141A ND -990.05 ug/L -99EPA 6020 ND -995 ug/L -99EPA 8141A ND -990.05 ug/L -99SM 9230 A, BNone50020 MPN/100mL -99SM 9221 B.ENone3,00020 MPN/100mL -99EPA 200.7None707100 mg/L -99EPA 6020 ND -995 ug/L -99SM5540 C ND -990.5 mg/L -99EPA 1664 ND -995 mg/L -9901/18/2007 Datasharing Format for Dry Weather Monitoring 4. Analytical ResultsSM 9221 B.ENone23,000200 MPN/100mL -99EPA 6020 ND -9920 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone23020 MPN/100mL -99SM 9221 B.ENone14020 MPN/100mL -99EPA 200.7None1660100 mg/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone17,000200 MPN/100mL -99EPA 6020None3520 ug/L -99EPA 6020 ND -995 ug/L -99EPA 8141A ND -990.05 ug/L -99EPA 6020 ND -995 ug/L -99EPA 8141A ND -990.05 ug/L -99SM 9230 A, BNone2,30020 MPN/100mL -99SM 9221 B.ENone8,00020 MPN/100mL -99EPA 200.7None1770100 mg/L -99EPA 6020None325 ug/L -99SM5540 C ND -990.5 mg/L -99EPA 1664 ND -995 mg/L -99SM 9221 B.ENone130,000200 MPN/100mL -99EPA 6020 ND -9920 ug/L -9901/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsField Name Copermittee StationID StationType SampleEventType Date Time Width Depth Velocity WaterFlow FlowRateCAAH03DWMField Screening 7/26/06 11:35 Flowing 17CAAH03DWMField Screening 7/26/06 11:35 Flowing 17CAAH03DWMField Screening 7/26/06 11:35 Flowing 17CAAH03DWMField Screening 7/26/06 11:35 Flowing 17CAAH03DWMField Screening 7/26/06 11:35 Flowing 17CAAH03DWMField Screening 7/26/06 11:35 Flowing 17CAAH03DWMField Screening 7/26/06 11:35 Flowing 17CAAH03DWMField Screening 7/26/06 11:35 Flowing 17CAAH04 DWMField Screening 8/10/06 16:50 Ponded0CAAH04 DWMField Screening 8/10/06 16:50 Ponded0CAAH04 DWMField Screening 8/10/06 16:50 Ponded0CAAH04 DWMField Screening 8/10/06 16:50 Ponded0CAAH04 DWMField Screening 8/10/06 16:50 Ponded0CAAH04 DWMField Screening 8/10/06 16:50 Ponded0CAAH04 DWMField Screening 8/10/06 16:50 Ponded0CAAH04 DWMField Screening 8/10/06 16:50 Ponded0CAAH04 DWMICID 8/11/06 8:05 Ponded0CAAH04 DWMICID 8/11/06 8:05 Ponded0CAAH04 DWMICID 8/11/06 8:05 Ponded0CAAH04 DWMICID 8/11/06 8:05 Ponded0CAAH04 DWMICID 8/11/06 8:05 Ponded0CAAH04 DWMICID 8/11/06 8:05 Ponded0CAAH04 DWMICID 8/11/06 8:05 Ponded0CAAH04 DWMICID 8/11/06 8:05 Ponded0CAAH08DWMField Screening 8/8/06 9:20 Flowing16CAAH08DWMField Screening 8/8/06 9:20 Flowing16CAAH08DWMField Screening 8/8/06 9:20 Flowing16CAAH08DWMField Screening 8/8/06 9:20 Flowing16CAAH08DWMField Screening 8/8/06 9:20 Flowing16CAAH08DWMField Screening 8/8/06 9:20 Flowing16CAAH08DWMField Screening 8/8/06 9:20 Flowing16CAAH08DWMField Screening 8/8/06 9:20 Flowing16CAAH09DWMField Screening 8/9/06 15:45 Ponded0CAAH09DWMField Screening 8/9/06 15:45 Ponded0CAAH09DWMField Screening 8/9/06 15:45 Ponded0CAAH09DWMField Screening 8/9/06 15:45 Ponded0CAAH09DWMField Screening 8/9/06 15:45 Ponded0CAAH09DWMField Screening 8/9/06 15:45 Ponded0CAAH09DWMField Screening 8/9/06 15:45 Ponded0CAAH09DWMField Screening 8/9/06 15:45 Ponded0CAAH10 DWMField Screening 7/28/06 12:30 Flowing10CAAH10 DWMField Screening 7/28/06 12:30 Flowing10CAAH10 DWMField Screening 7/28/06 12:30 Flowing10CAAH10 DWMField Screening 7/28/06 12:30 Flowing10CAAH10 DWMField Screening 7/28/06 12:30 Flowing10CAAH10 DWMField Screening 7/28/06 12:30 Flowing10CAAH10 DWMField Screening 7/28/06 12:30 Flowing10CAAH10 DWMField Screening 7/28/06 12:30 Flowing10CAAH10 DWMICID 8/3/06 9:10 Flowing10CAAH10 DWMICID 8/3/06 9:10 Flowing1001/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCAAH10 DWMICID 8/3/06 9:10 Flowing10CAAH10 DWMICID 8/3/06 9:10 Flowing10CAAH10 DWMICID 8/3/06 9:10 Flowing10CAAH10 DWMICID 8/3/06 9:10 Flowing10CAAH10 DWMICID 8/3/06 9:10 Flowing10CAAH10 DWMICID 8/3/06 9:10 Flowing10CAAH11DWMField Screening 8/10/06 10:50 Ponded0CAAH11DWMField Screening 8/10/06 10:50 Ponded0CAAH11DWMField Screening 8/10/06 10:50 Ponded0CAAH11DWMField Screening 8/10/06 10:50 Ponded0CAAH11DWMField Screening 8/10/06 10:50 Ponded0CAAH11DWMField Screening 8/10/06 10:50 Ponded0CAAH11DWMField Screening 8/10/06 10:50 Ponded0CAAH11DWMField Screening 8/10/06 10:50 Ponded0CAAH12DWMField Screening 8/10/06 11:25 Flowing2CAAH12DWMField Screening 8/10/06 11:25 Flowing2CAAH12DWMField Screening 8/10/06 11:25 Flowing2CAAH12DWMField Screening 8/10/06 11:25 Flowing2CAAH12DWMField Screening 8/10/06 11:25 Flowing2CAAH12DWMField Screening 8/10/06 11:25 Flowing2CAAH12DWMField Screening 8/10/06 11:25 Flowing2CAAH12DWMField Screening 8/10/06 11:25 Flowing2CAAH12 DWMICID 8/11/06 10:45 Flowing2CAAH12 DWMICID 8/11/06 10:45 Flowing2CAAH12 DWMICID 8/11/06 10:45 Flowing2CAAH12 DWMICID 8/11/06 10:45 Flowing2CAAH12 DWMICID 8/11/06 10:45 Flowing2CAAH12 DWMICID 8/11/06 10:45 Flowing2CAAH12 DWMICID 8/11/06 10:45 Flowing2CAAH12 DWMICID 8/11/06 10:45 Flowing2CAAH13DWMField Screening 8/10/06 9:45 Flowing10CAAH13DWMField Screening 8/10/06 9:45 Flowing10CAAH13DWMField Screening 8/10/06 9:45 Flowing10CAAH13DWMField Screening 8/10/06 9:45 Flowing10CAAH13DWMField Screening 8/10/06 9:45 Flowing10CAAH13DWMField Screening 8/10/06 9:45 Flowing10CAAH13DWMField Screening 8/10/06 9:45 Flowing10CAAH13DWMField Screening 8/10/06 9:45 Flowing10CAAH13 DWMICID 8/11/06 10:05 Flowing8CAAH13 DWMICID 8/11/06 10:05 Flowing8CAAH13 DWMICID 8/11/06 10:05 Flowing8CAAH13 DWMICID 8/11/06 10:05 Flowing8CAAH13 DWMICID 8/11/06 10:05 Flowing8CAAH13 DWMICID 8/11/06 10:05 Flowing8CAAH13 DWMICID 8/11/06 10:05 Flowing8CAAH13 DWMICID 8/11/06 10:05 Flowing8CAAH18 DWMField Screening 7/27/06 15:20 Flowing1CAAH18 DWMField Screening 7/27/06 15:20 Flowing1CAAH18 DWMField Screening 7/27/06 15:20 Flowing1CAAH18 DWMField Screening 7/27/06 15:20 Flowing1CAAH18 DWMField Screening 7/27/06 15:20 Flowing1CAAH18 DWMField Screening 7/27/06 15:20 Flowing101/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCAAH18 DWMField Screening 7/27/06 15:12 Flowing1CAAH18 DWMField Screening 7/27/06 15:20 Flowing1CAAH18 DWMICID 7/28/06 8:45 Flowing1CAAH18 DWMICID 7/28/06 8:45 Flowing1CAAH18 DWMICID 7/28/06 8:45 Flowing1CAAH18 DWMICID 7/28/06 8:45 Flowing1CAAH18 DWMICID 7/28/06 8:45 Flowing1CAAH18 DWMICID 7/28/06 8:45 Flowing1CAAH18 DWMICID 7/28/06 8:45 Flowing1CAAH18 DWMICID 7/28/06 8:45 Flowing1CAAH24DWMField Screening 7/27/06 12:20 Flowing10CAAH24DWMField Screening 7/27/06 12:20 Flowing10CAAH24DWMField Screening 7/27/06 12:20 Flowing10CAAH24DWMField Screening 7/27/06 12:20 Flowing10CAAH24DWMField Screening 7/27/06 12:20 Flowing10CAAH24DWMField Screening 7/27/06 12:20 Flowing10CAAH24DWMField Screening 7/27/06 12:20 Flowing10CAAH24DWMField Screening 7/27/06 12:20 Flowing10CAAH27DWMField Screening 7/28/06 14:45 Flowing1CAAH27DWMField Screening 7/28/06 14:45 Flowing1CAAH27DWMField Screening 7/28/06 14:45 Flowing1CAAH27DWMField Screening 7/28/06 14:45 Flowing1CAAH27DWMField Screening 7/28/06 14:45 Flowing1CAAH27DWMField Screening 7/28/06 14:45 Flowing1CAAH27DWMField Screening 7/28/06 14:45 Flowing1CAAH27DWMField Screening 7/28/06 14:45 Flowing1CAAH28DWMField Screening 7/28/06 15:30 Flowing1CAAH28DWMField Screening 7/28/06 15:30 Flowing1CAAH28DWMField Screening 7/28/06 15:30 Flowing1CAAH28DWMField Screening 7/28/06 15:30 Flowing1CAAH28DWMField Screening 7/28/06 15:30 Flowing1CAAH28DWMField Screening 7/28/06 15:30 Flowing1CAAH28DWMField Screening 7/28/06 15:30 Flowing1CAAH28DWMField Screening 7/28/06 15:30 Flowing1CAAH30DWMField Screening 7/27/06 14:40 Flowing3CAAH30DWMField Screening 7/27/06 14:40 Flowing3CAAH30DWMField Screening 7/27/06 14:40 Flowing3CAAH30DWMField Screening 7/27/06 14:40 Flowing3CAAH30DWMField Screening 7/27/06 14:40 Flowing3CAAH30DWMField Screening 7/27/06 14:40 Flowing3CAAH30DWMField Screening 7/27/06 14:40 Flowing3CAAH30DWMField Screening 7/27/06 14:40 Flowing3CAAH31DWMField Screening 7/26/06 15:25 Ponded0CAAH31DWMField Screening 7/26/06 15:25 Ponded0CAAH31DWMField Screening 7/26/06 15:25 Ponded0CAAH31DWMField Screening 7/26/06 15:25 Ponded0CAAH31DWMField Screening 7/26/06 15:25 Ponded0CAAH31DWMField Screening 7/26/06 15:25 Ponded0CAAH31DWMField Screening 7/26/06 15:25 Ponded0CAAH31DWMField Screening 7/26/06 15:25 Ponded0CAAH31DWMICID 7/27/06 9:15 Ponded0CAAH31DWMICID 7/27/06 9:15 Ponded001/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCAAH31DWMICID 7/27/06 9:15 Ponded0CAAH31DWMICID 7/27/06 9:15 Ponded0CAAH31DWMICID 7/27/06 9:15 Ponded0CAAH31DWMICID 7/27/06 9:15 Ponded0CAAH31DWMICID 7/27/06 9:15 Ponded0CAAH31DWMICID 7/27/06 9:15 Ponded0CAAH32DWMField Screening 7/26/06 16:00 Flowing62CAAH32DWMField Screening 7/26/06 16:00 Flowing62CAAH32DWMField Screening 7/26/06 16:00 Flowing62CAAH32DWMField Screening 7/26/06 16:00 Flowing62CAAH32DWMField Screening 7/26/06 16:00 Flowing62CAAH32DWMField Screening 7/26/06 16:00 Flowing62CAAH32DWMField Screening 7/26/06 16:00 Flowing62CAAH32DWMField Screening 7/26/06 16:00 Flowing62CAAH45DWMField Screening 7/28/06 11:40 Flowing15CAAH45DWMField Screening 7/28/06 11:40 Flowing15CAAH45DWMField Screening 7/28/06 11:40 Flowing15CAAH45DWMField Screening 7/28/06 11:40 Flowing15CAAH45DWMField Screening 7/28/06 11:40 Flowing15CAAH45DWMField Screening 7/28/06 11:40 Flowing15CAAH45DWMField Screening 7/28/06 11:40 Flowing15CAAH45DWMField Screening 7/28/06 11:40 Flowing15CAAH46DWMField Screening 7/27/06 10:40 Flowing10CAAH46DWMField Screening 7/27/06 10:40 Flowing10CAAH46DWMField Screening 7/27/06 10:40 Flowing10CAAH46DWMField Screening 7/27/06 10:40 Flowing10CAAH46DWMField Screening 7/27/06 10:40 Flowing10CAAH46DWMField Screening 7/27/06 10:40 Flowing10CAAH46DWMField Screening 7/27/06 10:40 Flowing10CAAH46DWMField Screening 7/27/06 10:40 Flowing10CAAH46DWMICID 7/28/06 9:15 Flowing10CAAH46DWMICID 7/28/06 9:15 Flowing10CAAH46DWMICID 7/28/06 9:15 Flowing10CAAH46DWMICID 7/28/06 9:15 Flowing10CAAH46DWMICID 7/28/06 9:15 Flowing10CAAH46DWMICID 7/28/06 9:15 Flowing10CAAH46DWMICID 7/28/06 9:15 Flowing10CAAH46DWMICID 7/28/06 9:15 Flowing10CAAH59DWMField Screening 7/27/06 16:15 Flowing1CAAH59DWMField Screening 7/27/06 16:15 Flowing1CAAH59DWMField Screening 7/27/06 16:15 Flowing1CAAH59DWMField Screening 7/27/06 16:15 Flowing1CAAH59DWMField Screening 7/27/06 16:15 Flowing1CAAH59DWMField Screening 7/27/06 16:15 Flowing1CAAH59DWMField Screening 7/27/06 16:15 Flowing1CAAH59DWMField Screening 7/27/06 16:15 Flowing1CAAH61DWMField Screening 8/11/06 9:10 Flowing1CAAH61DWMField Screening 8/11/06 9:10 Flowing1CAAH61DWMField Screening 8/11/06 9:10 Flowing1CAAH61DWMField Screening 8/11/06 9:10 Flowing1CAAH61DWMField Screening 8/11/06 9:10 Flowing1CAAH61DWMField Screening 8/11/06 9:10 Flowing101/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCAAH61DWMField Screening 8/11/06 9:10 Flowing1CAAH61DWMField Screening 8/11/06 9:10 Flowing1CAAH63DWMField Screening 8/9/06 16:25 Flowing1CAAH63DWMField Screening 8/9/06 16:25 Flowing1CAAH63DWMField Screening 8/9/06 16:25 Flowing1CAAH63DWMField Screening 8/9/06 16:25 Flowing1CAAH63DWMField Screening 8/9/06 16:25 Flowing1CAAH63DWMField Screening 8/9/06 16:25 Flowing1CAAH63DWMField Screening 8/9/06 16:25 Flowing1CAAH63DWMField Screening 8/9/06 16:25 Flowing1CAAH65DWMField Screening 8/9/06 16:55 Flowing1CAAH65DWMField Screening 8/9/06 16:55 Flowing1CAAH65DWMField Screening 8/9/06 16:55 Flowing1CAAH65DWMField Screening 8/9/06 16:55 Flowing1CAAH65DWMField Screening 8/9/06 16:55 Flowing1CAAH65DWMField Screening 8/9/06 16:55 Flowing1CAAH65DWMField Screening 8/9/06 16:55 Flowing1CAAH65DWMField Screening 8/9/06 16:55 Flowing1CABA02DWMField Screening 8/10/06 14:45 Flowing10CABA02DWMField Screening 8/10/06 14:45 Flowing10CABA02DWMField Screening 8/10/06 14:45 Flowing10CABA02DWMField Screening 8/10/06 14:45 Flowing10CABA02DWMField Screening 8/10/06 14:45 Flowing10CABA02DWMField Screening 8/10/06 14:45 Flowing10CABA02DWMField Screening 8/10/06 14:45 Flowing10CABA02DWMField Screening 8/10/06 14:45 Flowing10CABA03DWMField Screening 8/11/06 12:15 Ponded0CABA03DWMField Screening 8/11/06 12:15 Ponded0CABA03DWMField Screening 8/11/06 12:15 Ponded0CABA03DWMField Screening 8/11/06 12:15 Ponded0CABA03DWMField Screening 8/11/06 12:15 Ponded0CABA03DWMField Screening 8/11/06 12:15 Ponded0CABA03DWMField Screening 8/11/06 12:15 Ponded0CABA03DWMField Screening 8/11/06 12:15 Ponded0CABA04DWMField Screening 8/10/06 15:20 Flowing3CABA04DWMField Screening 8/10/06 15:20 Flowing3CABA04DWMField Screening 8/10/06 15:20 Flowing3CABA04DWMField Screening 8/10/06 15:20 Flowing3CABA04DWMField Screening 8/10/06 15:20 Flowing3CABA04DWMField Screening 8/10/06 15:20 Flowing3CABA04DWMField Screening 8/10/06 15:20 Flowing3CABA04DWMField Screening 8/10/06 15:20 Flowing3CABA06DWMField Screening 8/9/06 12:40 Flowing8CABA06DWMField Screening 8/9/06 12:40 Flowing8CABA06DWMField Screening 8/9/06 12:40 Flowing8CABA06DWMField Screening 8/9/06 12:40 Flowing8CABA06DWMField Screening 8/9/06 12:40 Flowing8CABA06DWMField Screening 8/9/06 12:40 Flowing8CABA06DWMField Screening 8/9/06 12:40 Flowing8CABA06DWMField Screening 8/9/06 12:40 Flowing8CABA06DWMICID 8/10/06 15:45 Flowing2CABA06DWMICID 8/10/06 15:45 Flowing201/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCABA06DWMICID 8/10/06 15:45 Flowing2CABA06DWMICID 8/10/06 15:45 Flowing2CABA06DWMICID 8/10/06 15:45 Flowing2CABA06DWMICID 8/10/06 15:45 Flowing2CABA06DWMICID 8/10/06 15:45 Flowing2CABA06DWMICID 8/10/06 15:45 Flowing2CABA07DWMField Screening 8/11/06 13:45 Flowing2CABA07DWMField Screening 8/11/06 13:45 Flowing2CABA07DWMField Screening 8/11/06 13:45 Flowing2CABA07DWMField Screening 8/11/06 13:45 Flowing2CABA07DWMField Screening 8/11/06 13:45 Flowing2CABA07DWMField Screening 8/11/06 13:45 Flowing2CABA07DWMField Screening 8/11/06 13:45 Flowing2CABA07DWMField Screening 8/11/06 13:45 Flowing2CABA07DWMICID 8/11/06 17:45 Flowing1CABA07DWMICID 8/11/06 17:45 Flowing1CABA07DWMICID 8/11/06 17:45 Flowing1CABA07DWMICID 8/11/06 17:45 Flowing1CABA07DWMICID 8/11/06 17:45 Flowing1CABA07DWMICID 8/11/06 17:45 Flowing1CABA07DWMICID 8/11/06 17:45 Flowing1CABA07DWMICID 8/11/06 17:45 Flowing1CABA13DWMField Screening 8/9/06 11:45 Flowing10CABA13DWMField Screening 8/9/06 11:45 Flowing10CABA13DWMField Screening 8/9/06 11:45 Flowing10CABA13DWMField Screening 8/9/06 11:45 Flowing10CABA13DWMField Screening 8/9/06 11:45 Flowing10CABA13DWMField Screening 8/9/06 11:45 Flowing10CABA13DWMField Screening 8/9/06 11:45 Flowing10CABA13DWMField Screening 8/9/06 11:45 Flowing10CABA26DWMField Screening 8/11/06 14:45 Flowing3CABA26DWMField Screening 8/11/06 14:45 Flowing3CABA26DWMField Screening 8/11/06 14:45 Flowing3CABA26DWMField Screening 8/11/06 14:45 Flowing3CABA26DWMField Screening 8/11/06 14:45 Flowing3CABA26DWMField Screening 8/11/06 14:45 Flowing3CABA26DWMField Screening 8/11/06 14:45 Flowing3CABA26DWMField Screening 8/11/06 14:45 Flowing3CABA27DWMField Screening 8/11/06 13:50 Flowing3CABA27DWMField Screening 8/11/06 13:50 Flowing3CABA27DWMField Screening 8/11/06 13:50 Flowing3CABA27DWMField Screening 8/11/06 13:50 Flowing3CABA27DWMField Screening 8/11/06 13:50 Flowing3CABA27DWMField Screening 8/11/06 13:50 Flowing3CABA27DWMField Screening 8/11/06 13:50 Flowing3CABA27DWMField Screening 8/11/06 13:50 Flowing3CABA32DWMField Screening 8/11/06 13:10 Flowing2CABA32DWMField Screening 8/11/06 13:10 Flowing2CABA32DWMField Screening 8/11/06 13:10 Flowing2CABA32DWMField Screening 8/11/06 13:10 Flowing2CABA32DWMField Screening 8/11/06 13:10 Flowing2CABA32DWMField Screening 8/11/06 13:10 Flowing201/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCABA32DWMField Screening 8/11/06 13:10 Flowing2CABA32DWMField Screening 8/11/06 13:10 Flowing2CABA32DWMICID 8/11/06 18:10 Flowing2CABA32DWMICID 8/11/06 18:10 Flowing2CABA32DWMICID 8/11/06 18:10 Flowing2CABA32DWMICID 8/11/06 18:10 Flowing2CABA32DWMICID 8/11/06 18:10 Flowing2CABA32DWMICID 8/11/06 18:10 Flowing2CABA32DWMICID 8/11/06 18:10 Flowing2CABA32DWMICID 8/11/06 18:10 Flowing2CABA34DWMField Screening 8/11/06 12:20 Flowing2CABA34DWMField Screening 8/11/06 12:20 Flowing2CABA34DWMField Screening 8/11/06 12:20 Flowing2CABA34DWMField Screening 8/11/06 12:20 Flowing2CABA34DWMField Screening 8/11/06 12:20 Flowing2CABA34DWMField Screening 8/11/06 12:20 Flowing2CABA34DWMField Screening 8/11/06 12:20 Flowing2CABA34DWMField Screening 8/11/06 12:20 Flowing2CABA36DWMField Screening 8/7/06 9:35 Flowing8CABA36DWMField Screening 8/7/06 9:35 Flowing8CABA36DWMField Screening 8/7/06 9:35 Flowing8CABA36DWMField Screening 8/7/06 9:35 Flowing8CABA36DWMField Screening 8/7/06 9:35 Flowing8CABA36DWMField Screening 8/7/06 9:35 Flowing8CABA36DWMField Screening 8/7/06 9:35 Flowing8CABA36DWMField Screening 8/7/06 9:35 Flowing8CABA40DWMField Screening 7/28/06 10:05 Flowing16CABA40DWMField Screening 7/28/06 10:05 Flowing16CABA40DWMField Screening 7/28/06 10:05 Flowing16CABA40DWMField Screening 7/28/06 10:05 Flowing16CABA40DWMField Screening 7/28/06 10:05 Flowing16CABA40DWMField Screening 7/28/06 10:05 Flowing16CABA40DWMField Screening 7/28/06 10:05 Flowing16CABA40DWMField Screening 7/28/06 10:05 Flowing16CABA41DWMField Screening 8/11/06 11:10 Flowing10CABA41DWMField Screening 8/11/06 11:10 Flowing10CABA41DWMField Screening 8/11/06 11:10 Flowing10CABA41DWMField Screening 8/11/06 11:10 Flowing10CABA41DWMField Screening 8/11/06 11:10 Flowing10CABA41DWMField Screening 8/11/06 11:10 Flowing10CABA41DWMField Screening 8/11/06 11:10 Flowing10CABA41DWMField Screening 8/11/06 11:10 Flowing10CABA43DWMField Screening 8/11/06 15:30 Flowing5CABA43DWMField Screening 8/11/06 15:30 Flowing5CABA43DWMField Screening 8/11/06 15:30 Flowing5CABA43DWMField Screening 8/11/06 15:30 Flowing5CABA43DWMField Screening 8/11/06 15:30 Flowing5CABA43DWMField Screening 8/11/06 15:30 Flowing5CABA43DWMField Screening 8/11/06 15:30 Flowing5CABA43DWMField Screening 8/11/06 15:30 Flowing5CABA47DWMField Screening 8/11/06 10:00 Flowing8CABA47DWMField Screening 8/11/06 10:00 Flowing801/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCABA47DWMField Screening 8/11/06 10:00 Flowing8CABA47DWMField Screening 8/11/06 10:00 Flowing8CABA47DWMField Screening 8/11/06 10:00 Flowing8CABA47DWMField Screening 8/11/06 10:00 Flowing8CABA47DWMField Screening 8/11/06 10:00 Flowing8CABA47DWMField Screening 8/11/06 10:00 Flowing8CABA47 DWMICID 8/11/06 16:10 Flowing5CABA47 DWMICID 8/11/06 16:10 Flowing5CABA47 DWMICID 8/11/06 16:10 Flowing5CABA47 DWMICID 8/11/06 16:10 Flowing5CABA47 DWMICID 8/11/06 16:10 Flowing5CABA47 DWMICID 8/11/06 16:10 Flowing5CABA47 DWMICID 8/11/06 16:10 Flowing5CABA47 DWMICID 8/11/06 16:10 Flowing5CABA48DWMField Screening 8/11/06 16:40 Ponded2CABA48DWMField Screening 8/11/06 16:40 Ponded2CABA48DWMField Screening 8/11/06 16:40 Ponded2CABA48DWMField Screening 8/11/06 16:40 Ponded2CABA48DWMField Screening 8/11/06 16:40 Ponded2CABA48DWMField Screening 8/11/06 16:40 Ponded2CABA48DWMField Screening 8/11/06 16:40 Ponded2CABA48DWMField Screening 8/11/06 16:40 Ponded2CABA49DWMField Screening 8/10/06 14:00 Flowing20CABA49DWMField Screening 8/10/06 14:00 Flowing20CABA49DWMField Screening 8/10/06 14:00 Flowing20CABA49DWMField Screening 8/10/06 14:00 Flowing20CABA49DWMField Screening 8/10/06 14:00 Flowing20CABA49DWMField Screening 8/10/06 14:00 Flowing20CABA49DWMField Screening 8/10/06 14:00 Flowing20CABA49DWMField Screening 8/10/06 14:00 Flowing20CABA51DWMField Screening 8/7/06 8:50 Flowing249CABA51DWMField Screening 8/7/06 8:50 Flowing249CABA51DWMField Screening 8/7/06 8:50 Flowing249CABA51DWMField Screening 8/7/06 8:50 Flowing249CABA51DWMField Screening 8/7/06 8:50 Flowing249CABA51DWMField Screening 8/7/06 8:50 Flowing249CABA51DWMField Screening 8/7/06 8:50 Flowing249CABA51DWMField Screening 8/7/06 8:50 Flowing249CABA52DWMField Screening 8/10/06 16:15 Flowing10CABA52DWMField Screening 8/10/06 16:15 Flowing10CABA52DWMField Screening 8/10/06 16:15 Flowing10CABA52DWMField Screening 8/10/06 16:15 Flowing10CABA52DWMField Screening 8/10/06 16:15 Flowing10CABA52DWMField Screening 8/10/06 16:15 Flowing10CABA52DWMField Screening 8/10/06 16:15 Flowing10CABA52DWMField Screening 8/10/06 16:15 Flowing10CABV02DWMField Screening 7/26/06 9:20 Flowing2CABV02DWMField Screening 7/26/06 9:20 Flowing2CABV02DWMField Screening 7/26/06 9:20 Flowing2CABV02DWMField Screening 7/26/06 9:20 Flowing2CABV02DWMField Screening 7/26/06 9:20 Flowing2CABV02DWMField Screening 7/26/06 9:20 Flowing201/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCABV02DWMField Screening 7/26/06 9:20 Flowing2CABV02DWMField Screening 7/26/06 9:20 Flowing2CABV04ADWMField Screening 7/26/06 8:45 Flowing1CABV04ADWMField Screening 7/26/06 8:45 Flowing1CABV04ADWMField Screening 7/26/06 8:45 Flowing1CABV04ADWMField Screening 7/26/06 8:45 Flowing1CABV04ADWMField Screening 7/26/06 8:45 Flowing1CABV04ADWMField Screening 7/26/06 8:45 Flowing1CABV04ADWMField Screening 7/26/06 8:45 Flowing1CABV04ADWMField Screening 7/26/06 8:45 Flowing1CABV04ADWMICID 7/27/06 8:30 Flowing1CABV04ADWMICID 7/27/06 8:30 Flowing1CABV04ADWMICID 7/27/06 8:30 Flowing1CABV04ADWMICID 7/27/06 8:30 Flowing1CABV04ADWMICID 7/27/06 8:30 Flowing1CABV04ADWMICID 7/27/06 8:30 Flowing1CABV04ADWMICID 7/27/06 8:30 Flowing1CABV04ADWMICID 7/27/06 8:30 Flowing1CABV06DWMField Screening 7/25/06 11:15 Flowing2CABV06DWMField Screening 7/25/06 11:15 Flowing2CABV06DWMField Screening 7/25/06 11:15 Flowing2CABV06DWMField Screening 7/25/06 11:15 Flowing2CABV06DWMField Screening 7/25/06 11:15 Flowing2CABV06DWMField Screening 7/25/06 11:15 Flowing2CABV06DWMField Screening 7/25/06 11:15 Flowing2CABV06DWMField Screening 7/25/06 11:15 Flowing2CABV08DWMField Screening 7/25/06 14:30 Flowing3CABV08DWMField Screening 7/25/06 14:30 Flowing3CABV08DWMField Screening 7/25/06 14:30 Flowing3CABV08DWMField Screening 7/25/06 14:30 Flowing3CABV08DWMField Screening 7/25/06 14:30 Flowing3CABV08DWMField Screening 7/25/06 14:30 Flowing3CABV08DWMField Screening 7/25/06 14:30 Flowing3CABV08DWMField Screening 7/25/06 14:30 Flowing3CABV08DWMICID 7/26/06 14:00 Flowing3CABV08DWMICID 7/26/06 14:00 Flowing3CABV08DWMICID 7/26/06 14:00 Flowing3CABV08DWMICID 7/26/06 14:00 Flowing3CABV08DWMICID 7/26/06 14:00 Flowing3CABV08DWMICID 7/26/06 14:00 Flowing3CABV08DWMICID 7/26/06 14:00 Flowing3CABV08DWMICID 7/26/06 14:00 Flowing3CABV09DWMField Screening 7/25/06 13:30 Flowing2CABV09DWMField Screening 7/25/06 13:30 Flowing2CABV09DWMField Screening 7/25/06 13:30 Flowing2CABV09DWMField Screening 7/25/06 13:30 Flowing2CABV09DWMField Screening 7/25/06 13:30 Flowing2CABV09DWMField Screening 7/25/06 13:30 Flowing2CABV09DWMField Screening 7/25/06 13:30 Flowing2CABV09DWMField Screening 7/25/06 13:30 Flowing2CABV10DWMField Screening 7/25/06 15:25 Flowing2CABV10DWMField Screening 7/25/06 15:25 Flowing201/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCABV10DWMField Screening 7/25/06 15:25 Flowing2CABV10DWMField Screening 7/25/06 15:25 Flowing2CABV10DWMField Screening 7/25/06 15:25 Flowing2CABV10DWMField Screening 7/25/06 15:25 Flowing2CABV10DWMField Screening 7/25/06 15:25 Flowing2CABV10DWMField Screening 7/25/06 15:25 Flowing2CABV15DWMField Screening 7/25/06 14:00 Dry0CABV15DWMField Screening 7/25/06 14:00 Dry0CABV15DWMField Screening 7/25/06 14:00 Dry0CABV15DWMField Screening 7/25/06 14:00 Dry0CABV15DWMField Screening 7/25/06 14:00 Dry0CABV15DWMField Screening 7/25/06 14:00 Dry0CABV15DWMField Screening 7/25/06 14:00 Dry0CABV15DWMField Screening 7/25/06 14:00 Dry0CABV16DWMField Screening 7/25/06 10:35 Flowing3CABV16DWMField Screening 7/25/06 10:35 Flowing3CABV16DWMField Screening 7/25/06 10:35 Flowing3CABV16DWMField Screening 7/25/06 10:35 Flowing3CABV16DWMField Screening 7/25/06 10:35 Flowing3CABV16DWMField Screening 7/25/06 10:35 Flowing3CABV16DWMField Screening 7/25/06 10:35 Flowing3CABV16DWMField Screening 7/25/06 10:35 Flowing3CAEN02ADWMField Screening 8/9/06 9:30 Ponded0CAEN02ADWMField Screening 8/9/06 9:30 Ponded0CAEN02ADWMField Screening 8/9/06 9:30 Ponded0CAEN02ADWMField Screening 8/9/06 9:30 Ponded0CAEN02ADWMField Screening 8/9/06 9:30 Ponded0CAEN02ADWMField Screening 8/9/06 9:30 Ponded0CAEN02ADWMField Screening 8/9/06 9:30 Ponded0CAEN02ADWMField Screening 8/9/06 9:30 Ponded0CAEN02BDWMField Screening 8/8/06 10:30 Flowing15CAEN02BDWMField Screening 8/8/06 10:30 Flowing15CAEN02BDWMField Screening 8/8/06 10:30 Flowing15CAEN02BDWMField Screening 8/8/06 10:30 Flowing15CAEN02BDWMField Screening 8/8/06 10:30 Flowing15CAEN02BDWMField Screening 8/8/06 10:30 Flowing15CAEN02BDWMField Screening 8/8/06 10:30 Flowing15CAEN02BDWMField Screening 8/8/06 10:30 Flowing15CAEN02CDWMField Screening 8/8/06 11:00 Flowing2CAEN02CDWMField Screening 8/8/06 11:00 Flowing2CAEN02CDWMField Screening 8/8/06 11:00 Flowing2CAEN02CDWMField Screening 8/8/06 11:00 Flowing2CAEN02CDWMField Screening 8/8/06 11:00 Flowing2CAEN02CDWMField Screening 8/8/06 11:00 Flowing2CAEN02CDWMField Screening 8/8/06 11:00 Flowing2CAEN02CDWMField Screening 8/8/06 11:00 Flowing2CAEN02C DWMICID 8/9/06 8:50 Flowing2CAEN02C DWMICID 8/9/06 8:50 Flowing2CAEN02C DWMICID 8/9/06 8:50 Flowing2CAEN02C DWMICID 8/9/06 8:50 Flowing2CAEN02C DWMICID 8/9/06 8:50 Flowing2CAEN02C DWMICID 8/9/06 8:50 Flowing201/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCAEN02C DWMICID 8/9/06 8:50 Flowing2CAEN02C DWMICID 8/9/06 8:50 Flowing2CAEN09DWMField Screening 8/9/06 10:40 Flowing10CAEN09DWMField Screening 8/9/06 10:40 Flowing10CAEN09DWMField Screening 8/9/06 10:40 Flowing10CAEN09DWMField Screening 8/9/06 10:40 Flowing10CAEN09DWMField Screening 8/9/06 10:40 Flowing10CAEN09DWMField Screening 8/9/06 10:40 Flowing10CAEN09DWMField Screening 8/9/06 10:40 Flowing10CAEN09DWMField Screening 8/9/06 10:40 Flowing10CAEN14DWMField Screening 8/8/06 16:20 Flowing3CAEN14DWMField Screening 8/8/06 16:20 Flowing3CAEN14DWMField Screening 8/8/06 16:20 Flowing3CAEN14DWMField Screening 8/8/06 16:20 Flowing3CAEN14DWMField Screening 8/8/06 16:20 Flowing3CAEN14DWMField Screening 8/8/06 16:20 Flowing3CAEN14DWMField Screening 8/8/06 16:20 Flowing3CAEN14DWMField Screening 8/8/06 16:20 Flowing3CAEN14DWMICID 8/9/06 14:45 Flowing3CAEN14DWMICID 8/9/06 14:45 Flowing3CAEN14DWMICID 8/9/06 14:45 Flowing3CAEN14DWMICID 8/9/06 14:45 Flowing3CAEN14DWMICID 8/9/06 14:45 Flowing3CAEN14DWMICID 8/9/06 14:45 Flowing3CAEN14DWMICID 8/9/06 14:45 Flowing3CAEN14DWMICID 8/9/06 14:45 Flowing3CAEN14ADWMField Screening 8/9/06 15:00 Flowing2CAEN14ADWMField Screening 8/9/06 15:00 Flowing2CAEN14ADWMField Screening 8/9/06 15:00 Flowing2CAEN14ADWMField Screening 8/9/06 15:00 Flowing2CAEN14ADWMField Screening 8/9/06 15:00 Flowing2CAEN14ADWMField Screening 8/9/06 15:00 Flowing2CAEN14ADWMField Screening 8/9/06 15:00 Flowing2CAEN14ADWMField Screening 8/9/06 15:00 Flowing2CAEN14A DWMICID 8/10/06 8:35 Flowing2CAEN14A DWMICID 8/10/06 8:35 Flowing2CAEN14A DWMICID 8/10/06 8:35 Flowing2CAEN14A DWMICID 8/10/06 8:35 Flowing2CAEN14A DWMICID 8/10/06 8:35 Flowing2CAEN14A DWMICID 8/10/06 8:35 Flowing2CAEN14A DWMICID 8/10/06 8:35 Flowing2CAEN14A DWMICID 8/10/06 8:35 Flowing2CAEN18DWMField Screening 8/7/06 15:00 Flowing8CAEN18DWMField Screening 8/7/06 15:00 Flowing8CAEN18DWMField Screening 8/7/06 15:00 Flowing8CAEN18DWMField Screening 8/7/06 15:00 Flowing8CAEN18DWMField Screening 8/7/06 15:00 Flowing8CAEN18DWMField Screening 8/7/06 15:00 Flowing8CAEN18DWMField Screening 8/7/06 15:00 Flowing8CAEN18DWMField Screening 8/7/06 15:00 Flowing8CAEN19DWMField Screening 8/8/06 12:15 Flowing28CAEN19DWMField Screening 8/8/06 12:15 Flowing2801/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCAEN19DWMField Screening 8/8/06 12:15 Flowing28CAEN19DWMField Screening 8/8/06 12:15 Flowing28CAEN19DWMField Screening 8/8/06 12:15 Flowing28CAEN19DWMField Screening 8/8/06 12:15 Flowing28CAEN19DWMField Screening 8/8/06 12:15 Flowing28CAEN19DWMField Screening 8/8/06 12:15 Flowing28CAEN20DWMField Screening 8/7/06 14:10 Flowing8CAEN20DWMField Screening 8/7/06 14:10 Flowing8CAEN20DWMField Screening 8/7/06 14:10 Flowing8CAEN20DWMField Screening 8/7/06 14:10 Flowing8CAEN20DWMField Screening 8/7/06 14:10 Flowing8CAEN20DWMField Screening 8/7/06 14:10 Flowing8CAEN20DWMField Screening 8/7/06 14:10 Flowing8CAEN20DWMField Screening 8/7/06 14:10 Flowing8CAEN21DWMField Screening 8/7/06 16:00 Flowing1CAEN21DWMField Screening 8/7/06 16:00 Flowing1CAEN21DWMField Screening 8/7/06 16:00 Flowing1CAEN21DWMField Screening 8/7/06 16:00 Flowing1CAEN21DWMField Screening 8/7/06 16:00 Flowing1CAEN21DWMField Screening 8/7/06 16:00 Flowing1CAEN21DWMField Screening 8/7/06 16:00 Flowing1CAEN21DWMField Screening 8/7/06 16:00 Flowing1CAEN21 DWMICID 8/8/06 14:05 Flowing1CAEN21 DWMICID 8/8/06 14:05 Flowing1CAEN21 DWMICID 8/8/06 14:05 Flowing1CAEN21 DWMICID 8/8/06 14:05 Flowing1CAEN21 DWMICID 8/8/06 14:05 Flowing1CAEN21 DWMICID 8/8/06 14:05 Flowing1CAEN21 DWMICID 8/8/06 14:05 Flowing1CAEN21 DWMICID 8/8/06 14:05 Flowing1CAEN23DWMField Screening 8/10/06 9:05 Flowing1CAEN23DWMField Screening 8/10/06 9:05 Flowing1CAEN23DWMField Screening 8/10/06 9:05 Flowing1CAEN23DWMField Screening 8/10/06 9:05 Flowing1CAEN23DWMField Screening 8/10/06 9:05 Flowing1CAEN23DWMField Screening 8/10/06 9:05 Flowing1CAEN23DWMField Screening 8/10/06 9:05 Flowing1CAEN23DWMField Screening 8/10/06 9:05 Flowing1CAEN24DWMField Screening 8/7/06 15:40 Flowing1CAEN24DWMField Screening 8/7/06 15:40 Flowing1CAEN24DWMField Screening 8/7/06 15:40 Flowing1CAEN24DWMField Screening 8/7/06 15:40 Flowing1CAEN24DWMField Screening 8/7/06 15:40 Flowing1CAEN24DWMField Screening 8/7/06 15:40 Flowing1CAEN24DWMField Screening 8/7/06 15:40 Flowing1CAEN24DWMField Screening 8/7/06 15:40 Flowing1CAEN31DWMField Screening 8/8/06 15:30 Flowing2CAEN31DWMField Screening 8/8/06 15:30 Flowing2CAEN31DWMField Screening 8/8/06 15:30 Flowing2CAEN31DWMField Screening 8/8/06 15:30 Flowing2CAEN31DWMField Screening 8/8/06 15:30 Flowing2CAEN31DWMField Screening 8/8/06 15:30 Flowing201/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsCAEN31DWMField Screening 8/8/06 15:30 Flowing2CAEN31DWMField Screening 8/8/06 15:30 Flowing2CAEN31DWMICID 8/9/06 14:30 Flowing2CAEN31DWMICID 8/9/06 14:30 Flowing2CAEN31DWMICID 8/9/06 14:30 Flowing2CAEN31DWMICID 8/9/06 14:30 Flowing2CAEN31DWMICID 8/9/06 14:30 Flowing2CAEN31DWMICID 8/9/06 14:30 Flowing2CAEN31DWMICID 8/9/06 14:30 Flowing2CAEN31DWMICID 8/9/06 14:30 Flowing201/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsAnalyteMethodQualifier Result ReportingLimitUnitAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LConductivityHanna Instruments HI 991None1.920.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None7.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.270.016 mg/LpHHanna Instruments HI 991None8.10.01 pH unitTemperatureHanna Instruments HI 991None24.50.1 oCTurbidityHanna Instruments HI 937None5.430.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None1.630.01 mS/cmMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None9.80.01 pH unitTemperatureHanna Instruments HI 991None33.00.1 oCTurbidityHanna Instruments HI 937None16.630.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None1.600.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None8.50.01 pH unitTemperatureHanna Instruments HI 991None23.00.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None1.470.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None6.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.130.016 mg/LpHHanna Instruments HI 991None7.90.01 pH unitTemperatureHanna Instruments HI 991None21.00.1 oCTurbidityHanna Instruments HI 937None2.790.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None1.000.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.490.016 mg/LpHHanna Instruments HI 991None7.70.01 pH unitTemperatureHanna Instruments HI 991None26.30.1 oCTurbidityHanna Instruments HI 937None25.930.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None2.330.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None301.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA0.070.016 mg/LpHHanna Instruments HI 991None7.80.01 pH unitTemperatureHanna Instruments HI 991None29.30.1 oCTurbidityHanna Instruments HI 937None12.770.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None2.230.01 mS/cm01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None301.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unitTemperatureHanna Instruments HI 991None23.30.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.60.05 mg/LConductivityHanna Instruments HI 991None0.870.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.330.016 mg/LpHHanna Instruments HI 991None7.70.01 pH unitTemperatureHanna Instruments HI 991None23.60.1 oCTurbidityHanna Instruments HI 937None3.460.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.30.05 mg/LConductivityHanna Instruments HI 991None2.030.01 mS/cmMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.260.016 mg/LpHHanna Instruments HI 991None8.00.01 pH unitTemperatureHanna Instruments HI 991None24.70.1 oCTurbidityHanna Instruments HI 937None2.940.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None1.760.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None12.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None8.30.01 pH unitTemperatureHanna Instruments HI 991None25.30.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LConductivityHanna Instruments HI 991None2.290.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None501.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None7.60.01 pH unitTemperatureHanna Instruments HI 991None22.40.1 oCTurbidityHanna Instruments HI 937None0.930.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None2.280.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None501.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unitTemperatureHanna Instruments HI 991None22.50.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None1.50.05 mg/LConductivityHanna Instruments HI 991None3.540.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.820.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unit01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsTemperatureHanna Instruments HI 991None27.70.1 oCTurbidityHanna Instruments HI 937None13.550.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.80.05 mg/LConductivityHanna Instruments HI 991None2.430.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unitTemperatureHanna Instruments HI 991None26.10.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None5.270.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.030.016 mg/LpHHanna Instruments HI 991None7.30.01 pH unitTemperatureHanna Instruments HI 991None27.90.1 oCTurbidityHanna Instruments HI 937None2.910.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None0.800.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None8.40.01 pH unitTemperatureHanna Instruments HI 991None27.70.1 oCTurbidityHanna Instruments HI 937None12.320.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.30.05 mg/LConductivityHanna Instruments HI 991None4.260.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None7.60.01 pH unitTemperatureHanna Instruments HI 991None30.50.1 oCTurbidityHanna Instruments HI 937None7.190.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None1.760.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None3.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.330.016 mg/LpHHanna Instruments HI 991None7.60.01 pH unitTemperatureHanna Instruments HI 991None26.60.1 oCTurbidityHanna Instruments HI 937None2.910.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None2.50.05 mg/LConductivityHanna Instruments HI 991None1.260.01 mS/cmMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None1.100.016 mg/LpHHanna Instruments HI 991None7.30.01 pH unitTemperatureHanna Instruments HI 991None25.00.1 oCTurbidityHanna Instruments HI 937None13.70.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None2.50.05 mg/LConductivityHanna Instruments HI 991None1.320.01 mS/cm01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None7.30.01 pH unitTemperatureHanna Instruments HI 991None24.60.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LConductivityHanna Instruments HI 991None2.940.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.030.016 mg/LpHHanna Instruments HI 991None8.10.01 pH unitTemperatureHanna Instruments HI 991None28.90.1 oCTurbidityHanna Instruments HI 937None0.010.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None2.780.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None3.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.10.016 mg/LpHHanna Instruments HI 991None7.60.01 pH unitTemperatureHanna Instruments HI 991None28.70.1 oCTurbidityHanna Instruments HI 937None23.20.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None1.50.05 mg/LConductivityHanna Instruments HI 991None3.570.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.130.016 mg/LpHHanna Instruments HI 991None7.20.01 pH unitTemperatureHanna Instruments HI 991None23.90.1 oCTurbidityHanna Instruments HI 937None6.560.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.50.05 mg/LConductivityHanna Instruments HI 991None6.540.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None7.40.01 pH unitTemperatureHanna Instruments HI 991None23.20.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None1.580.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None7.70.01 pH unitTemperatureHanna Instruments HI 991None26.50.1 oCTurbidityHanna Instruments HI 937None10.40.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None2.920.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.130.016 mg/LpHHanna Instruments HI 991None7.40.01 pH unit01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsTemperatureHanna Instruments HI 991None25.80.1 oCTurbidityHanna Instruments HI 937None27.480.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LConductivityHanna Instruments HI 991None2.200.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.490.016 mg/LpHHanna Instruments HI 991None8.80.01 pH unitTemperatureHanna Instruments HI 991None24.00.1 oCTurbidityHanna Instruments HI 937None2.170.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None1.900.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.650.016 mg/LpHHanna Instruments HI 991None7.90.01 pH unitTemperatureHanna Instruments HI 991None25.00.1 oCTurbidityHanna Instruments HI 937None3.210.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LConductivityHanna Instruments HI 991None1.630.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None3.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.330.016 mg/LpHHanna Instruments HI 991None7.90.01 pH unitTemperatureHanna Instruments HI 991None24.10.1 oCTurbidityHanna Instruments HI 937None2.370.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None2.440.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None3.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.260.016 mg/LpHHanna Instruments HI 991None8.60.01 pH unitTemperatureHanna Instruments HI 991None25.80.1 oCTurbidityHanna Instruments HI 937None4.250.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None2.980.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None3.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.200.016 mg/LpHHanna Instruments HI 991None7.20.01 pH unitTemperatureHanna Instruments HI 991None26.60.1 oCTurbidityHanna Instruments HI 937None11.120.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.30.05 mg/LConductivityHanna Instruments HI 991None1.700.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.130.016 mg/LpHHanna Instruments HI 991None7.60.01 pH unitTemperatureHanna Instruments HI 991None26.40.1 oCTurbidityHanna Instruments HI 937None1640.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None2.560.01 mS/cm01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unitTemperatureHanna Instruments HI 991None26.50.1 oCTurbidityHanna Instruments HI 937None19.330.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None4.00.05 mg/LConductivityHanna Instruments HI 991None1.950.01 mS/cmMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None1.300.016 mg/LpHHanna Instruments HI 991None8.60.01 pH unitTemperatureHanna Instruments HI 991None24.60.1 oCTurbidityHanna Instruments HI 937None16.150.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None1.760.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None7.90.01 pH unitTemperatureHanna Instruments HI 991None24.20.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None10.920.01 mS/cmMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None6.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.200.016 mg/LpHHanna Instruments HI 991None7.80.01 pH unitTemperatureHanna Instruments HI 991None23.30.1 oCTurbidityHanna Instruments HI 937None35.450.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LConductivityHanna Instruments HI 991None6.400.01 mS/cmMBASCHEMetrics CHEMets Kit None0.630.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None7.80.01 pH unitTemperatureHanna Instruments HI 991None25.70.1 oCTurbidityHanna Instruments HI 937None8.520.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LConductivityHanna Instruments HI 991None6.190.01 mS/cmMBASCHEMetrics CHEMets Kit None0.500.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unitTemperatureHanna Instruments HI 991None23.70.1 oCTurbidityHanna Instruments HI 937None7.480.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.90.05 mg/LConductivityHanna Instruments HI 991None1.620.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None2.280.016 mg/LpHHanna Instruments HI 991None7.60.01 pH unit01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsTemperatureHanna Instruments HI 991None25.50.1 oCTurbidityHanna Instruments HI 937None1.420.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.30.05 mg/LConductivityHanna Instruments HI 991None1.080.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.160.016 mg/LpHHanna Instruments HI 991None7.70.01 pH unitTemperatureHanna Instruments HI 991None25.90.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None5.670.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.260.016 mg/LpHHanna Instruments HI 991None8.20.01 pH unitTemperatureHanna Instruments HI 991None23.00.1 oCTurbidityHanna Instruments HI 937None3.500.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None6.890.01 mS/cmMBASCHEMetrics CHEMets Kit None0.500.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None8.10.01 pH unitTemperatureHanna Instruments HI 991None22.30.1 oCTurbidityHanna Instruments HI 937None3.550.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.30.05 mg/LConductivityHanna Instruments HI 991None2.850.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.230.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unitTemperatureHanna Instruments HI 991None25.30.1 oCTurbidityHanna Instruments HI 937None1.040.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None3.980.01 mS/cmMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.980.016 mg/LpHHanna Instruments HI 991None8.60.01 pH unitTemperatureHanna Instruments HI 991None25.50.1 oCTurbidityHanna Instruments HI 937None2.430.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.80.05 mg/LConductivityHanna Instruments HI 991None2.690.01 mS/cmMBASCHEMetrics CHEMets Kit None0.500.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.490.016 mg/LpHHanna Instruments HI 991None8.30.01 pH unitTemperatureHanna Instruments HI 991None24.50.1 oCTurbidityHanna Instruments HI 937None4.090.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None9.980.01 mS/cm01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.490.016 mg/LpHHanna Instruments HI 991None5.60.01 pH unitTemperatureHanna Instruments HI 991None26.00.1 oCTurbidityHanna Instruments HI 937None24.820.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None9.710.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None5.20.01 pH unitTemperatureHanna Instruments HI 991None23.60.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.90.05 mg/LConductivityHanna Instruments HI 991None3.970.01 mS/cmMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.130.016 mg/LpHHanna Instruments HI 991None8.30.01 pH unitTemperatureHanna Instruments HI 991None25.40.1 oCTurbidityHanna Instruments HI 937None7.340.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LConductivityHanna Instruments HI 991None2.240.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None3.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None7.60.01 pH unitTemperatureHanna Instruments HI 991None23.10.1 oCTurbidityHanna Instruments HI 937None1.240.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LConductivityHanna Instruments HI 991None5.630.01 mS/cmMBASCHEMetrics CHEMets Kit None0.500.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.030.016 mg/LpHHanna Instruments HI 991None7.80.01 pH unitTemperatureHanna Instruments HI 991None21.00.1 oCTurbidityHanna Instruments HI 937None2.350.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.60.05 mg/LConductivityHanna Instruments HI 991None4.410.01 mS/cmMBASCHEMetrics CHEMets Kit None0.500.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.630.016 mg/LpHHanna Instruments HI 991None7.30.01 pH unitTemperatureHanna Instruments HI 991None23.90.1 oCTurbidityHanna Instruments HI 937None3.960.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.80.05 mg/LConductivityHanna Instruments HI 991None1.640.01 mS/cmMBASCHEMetrics CHEMets Kit None0.500.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None6.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.820.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unit01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsTemperatureHanna Instruments HI 991None23.30.1 oCTurbidityHanna Instruments HI 937None5.290.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.60.05 mg/LConductivityHanna Instruments HI 991None15.120.01 mS/cmMBASCHEMetrics CHEMets Kit None0.800.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None101.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.030.016 mg/LpHHanna Instruments HI 991None6.80.01 pH unitTemperatureHanna Instruments HI 991None26.50.1 oCTurbidityHanna Instruments HI 937None1.100.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None15.190.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None101.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None6.60.01 pH unitTemperatureHanna Instruments HI 991None27.40.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LConductivityHanna Instruments HI 991None2.620.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None3.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.200.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unitTemperatureHanna Instruments HI 991None24.50.1 oCTurbidityHanna Instruments HI 937None1.450.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.60.05 mg/LConductivityHanna Instruments HI 991None2.230.01 mS/cmMBASCHEMetrics CHEMets Kit None1.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.330.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unitTemperatureHanna Instruments HI 991None24.90.1 oCTurbidityHanna Instruments HI 937None11.160.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None4.750.01 mS/cmMBASCHEMetrics CHEMets Kit None1.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None7.60.01 pH unitTemperatureHanna Instruments HI 991None25.50.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None3.980.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None3.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.270.016 mg/LpHHanna Instruments HI 991None7.90.01 pH unitTemperatureHanna Instruments HI 991None24.20.1 oCTurbidityHanna Instruments HI 937None3.110.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None4.010.01 mS/cm01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.270.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unitTemperatureHanna Instruments HI 991None23.90.1 oCTurbidityHanna Instruments HI 937None2.750.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NS-990.05 mg/LConductivityHanna Instruments HI 991NS-990.01 mS/cmMBASCHEMetrics CHEMets Kit NS-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NS-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NS-990.016 mg/LpHHanna Instruments HI 991NS-990.01 pH unitTemperatureHanna Instruments HI 991NS-990.1 oCTurbidityHanna Instruments HI 937NS-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None2.180.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.650.016 mg/LpHHanna Instruments HI 991None8.10.01 pH unitTemperatureHanna Instruments HI 991None25.00.1 oCTurbidityHanna Instruments HI 937None3.000.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.60.05 mg/LConductivityHanna Instruments HI 991None1.060.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.260.016 mg/LpHHanna Instruments HI 991None7.80.01 pH unitTemperatureHanna Instruments HI 991None23.40.1 oCTurbidityHanna Instruments HI 937None41.250.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None2.690.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None8.90.01 pH unitTemperatureHanna Instruments HI 991None26.70.1 oCTurbidityHanna Instruments HI 937None3.380.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None4.920.01 mS/cmMBASCHEMetrics CHEMets Kit None1.00.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None501.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit >3.00.016 mg/LpHHanna Instruments HI 991None7.90.01 pH unitTemperatureHanna Instruments HI 991None21.30.1 oCTurbidityHanna Instruments HI 937None1.520.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None5.090.01 mS/cmMBASCHEMetrics CHEMets Kit None1.00.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None501.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.980.016 mg/LpHHanna Instruments HI 991None8.10.01 pH unit01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsTemperatureHanna Instruments HI 991None21.00.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.30.05 mg/LConductivityHanna Instruments HI 991None4.830.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.030.016 mg/LpHHanna Instruments HI 991None7.40.01 pH unitTemperatureHanna Instruments HI 991None22.30.1 oCTurbidityHanna Instruments HI 937None10.820.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit >100.05 mg/LConductivityHanna Instruments HI 991None2.490.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None3.751.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None1.100.016 mg/LpHHanna Instruments HI 991None7.80.01 pH unitTemperatureHanna Instruments HI 991None24.50.1 oCTurbidityHanna Instruments HI 937None760.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None2.50.05 mg/LConductivityHanna Instruments HI 991None1.710.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None7.90.01 pH unitTemperatureHanna Instruments HI 991None24.30.1 oCTurbidityHanna Instruments HI 937None15.930.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None6.50.05 mg/LConductivityHanna Instruments HI 991None4.110.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.130.016 mg/LpHHanna Instruments HI 991None5.40.01 pH unitTemperatureHanna Instruments HI 991None25.10.1 oCTurbidityHanna Instruments HI 937None26.970.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None100.05 mg/LConductivityHanna Instruments HI 991None2.200.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None6.60.01 pH unitTemperatureHanna Instruments HI 991None22.40.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.80.05 mg/LConductivityHanna Instruments HI 991None6.230.01 mS/cmMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit ND-990.016 mg/LpHHanna Instruments HI 991None6.70.01 pH unitTemperatureHanna Instruments HI 991None25.00.1 oCTurbidityHanna Instruments HI 937None34.830.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.40.05 mg/LConductivityHanna Instruments HI 991None5.120.01 mS/cm01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None7.50.01 pH unitTemperatureHanna Instruments HI 991None25.10.1 oCTurbidityHanna Instruments HI 937None6.050.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.80.05 mg/LConductivityHanna Instruments HI 991None6.040.01 mS/cmMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None7.00.01 pH unitTemperatureHanna Instruments HI 991None24.60.1 oCTurbidityHanna Instruments HI 937None14.850.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.80.05 mg/LConductivityHanna Instruments HI 991None1.170.01 mS/cmMBASCHEMetrics CHEMets Kit None0.750.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None151.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None7.10.01 pH unitTemperatureHanna Instruments HI 991None23.80.1 oCTurbidityHanna Instruments HI 937None6.210.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None1.190.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None7.30.01 pH unitTemperatureHanna Instruments HI 991None23.50.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.60.05 mg/LConductivityHanna Instruments HI 991None3.340.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.260.016 mg/LpHHanna Instruments HI 991None6.90.01 pH unitTemperatureHanna Instruments HI 991None23.40.1 oCTurbidityHanna Instruments HI 937None9.300.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.60.05 mg/LConductivityHanna Instruments HI 991None3.650.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LpHHanna Instruments HI 991None6.70.01 pH unitTemperatureHanna Instruments HI 991None24.50.1 oCTurbidityHanna Instruments HI 937None27.330.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LConductivityHanna Instruments HI 991None6.210.01 mS/cmMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.030.016 mg/LpHHanna Instruments HI 991None6.00.01 pH unit01/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsTemperatureHanna Instruments HI 991None24.00.1 oCTurbidityHanna Instruments HI 937None7.660.01 NTUAmmonia (NH3-N)CHEMetrics CHEMets Kit NA-990.05 mg/LConductivityHanna Instruments HI 991None6.430.01 mS/cmMBASCHEMetrics CHEMets Kit NA-990.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit NA-991.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit NA-990.016 mg/LpHHanna Instruments HI 991None6.20.01 pH unitTemperatureHanna Instruments HI 991None24.20.1 oCTurbidityHanna Instruments HI 937NA-990.01 NTU01/18/2007 Datasharing Format for Dry Weather Monitoring 2. Visual ObservationsField Name Copermittee StationID StationType SampleEventType Date Time Weather Rainfall Odor Color Clarity CAAH03DWMField Screening 7/26/06 11:35 Sunny > 72 hours None None ClearCAAH04DWMICID 8/11/06 8:05 Sunny > 72 hours None Yellow ClearCAAH04 DWMField Screening 8/10/06 16:50 Sunny > 72 hours None Yellow ClearCAAH08DWMField Screening 8/8/06 9:20 Sunny > 72 hours None None ClearCAAH09DWMField Screening 8/9/06 15:45 Partly Cloudy > 72 hours None None Slightly CloudyCAAH10DWMICID 8/3/06 9:10 Overcast > 72 hours None None ClearCAAH10 DWMField Screening 7/28/06 12:30 Overcast > 72 hours None None ClearCAAH11DWMField Screening 8/10/06 10:50 Sunny > 72 hours None Yellow ClearCAAH12DWMField Screening 8/12/06 11:25 Sunny > 72 hours None Yellow ClearCAAH12DWMICID 8/11/06 10:45 Sunny > 72 hours None Yellow ClearCAAH13DWMField Screening 8/10/06 9:45 Sunny > 72 hours None None ClearCAAH13DWMICID 8/11/06 10:05 Sunny > 72 hours None None ClearCAAH18DWMICID 7/28/06 8:45 Partly Cloudy > 72 hours None None ClearCAAH18 DWMField Screening 7/27/06 15:20 Partly Cloudy > 72 hours None None ClearCAAH24DWMField Screening 7/27/06 12:20 Sunny > 72 hours None None ClearCAAH27DWMField Screening 7/28/06 14:45 Sunny > 72 hours None None ClearCAAH28DWMField Screening 7/28/06 15:30 Sunny > 72 hours None Yellow ClearCAAH30DWMField Screening 7/27/06 14:40 Partly Cloudy > 72 hours None Yellow ClearCAAH31DWMField Screening 7/26/06 15:25 Partly Cloudy > 72 hours Musty Yellow ClearCAAH31DWMICID 7/27/06 9:15 Sunny > 72 hours Musty Yellow ClearCAAH32DWMField Screening 7/26/06 16:00 Partly Cloudy > 72 hours None None ClearCAAH45DWMField Screening 7/28/06 11:40 Partly Cloudy > 72 hours None Yellow Slightly CloudyCAAH46DWMField Screening 7/27/06 10:40 Sunny > 72 hours None None ClearCAAH46DWMICID 7/28/06 9:15 Partly Cloudy > 72 hours None None ClearCAAH59DWMField Screening 7/27/06 16:15 Sunny > 72 hours None None ClearCAAH61DWMField Screening 8/11/06 9:10 Sunny > 72 hours None Yellow Slightly Cloudy01/18/2007 Datasharing Format for Dry Weather Monitoring 2. Visual ObservationsCAAH63DWMField Screening 8/9/06 16:25 Partly Cloudy > 72 hours None None ClearCAAH65DWMField Screening 8/9/06 16:55 Partly Cloudy > 72 hours None None ClearCABA02DWMField Screening 8/10/06 14:45 Sunny > 72 hours None None ClearCABA03DWMField Screening 8/11/06 12:15 Partly Cloudy > 72 hours None None ClearCABA04DWMField Screening 8/10/06 15:20 Sunny > 72 hours None None ClearCABA06DWMField Screening 8/9/06 12:40 Sunny > 72 hours None Brown OpaqueCABA06DWMICID 8/10/06 15:45 Sunny > 72 hours None None ClearCABA07DWMField Screening 8/11/06 13:45 Sunny > 72 hours None Yellow ClearCABA07DWMICID 8/11/06 17:45 Partly Cloudy >72 hours None Yellow ClearCABA13DWMField Screening 8/9/06 11:45 Sunny > 72 hours None None Slightly CloudyCABA26DWMField Screening 8/11/06 14:45 Sunny > 72 hours None None ClearCABA27DWMField Screening 8/11/06 13:50 Sunny > 72 hours None None ClearCABA32DWMField Screening 8/11/06 13:10 Sunny > 72 hours None None ClearCABA32DWMICID 8/11/06 18:10 Sunny > 72 hours None None ClearCABA34DWMField Screening 8/11/06 12:20 Partly Cloudy > 72 hours None None ClearCABA36DWMField Screening 8/7/06 9:35 Partly Cloudy > 72 hours None None ClearCABA40DWMField Screening 7/28/06 10:05 Partly Cloudy > 72 hours None None ClearCABA41DWMField Screening 8/11/06 11:10 Sunny > 72 hours None None ClearCABA43DWMField Screening 8/11/06 15:30 Sunny >72 hours None None ClearCABA47DWMField Screening 8/11/06 10:00 Sunny > 72 hours None None ClearCABA47DWMICID 8/11/06 16:10 Sunny > 72 hours None None ClearCABA48DWMField Screening 8/11/06 16:40 Sunny > 72 hours None None ClearCABA49DWMField Screening 8/10/06 14:00 Sunny > 72 hours None None ClearCABA51DWMField Screening 8/7/06 8:50 Partly Cloudy > 72 hours None None ClearCABA52DWMField Screening 8/10/06 16:15 Sunny > 72 hours None None ClearCABV02DWMField Screening 7/26/06 9:20 Partly Cloudy > 72 hours None None ClearCABV04ADWMField Screening 7/26/06 8:45 Overcast > 72 hours None None ClearCABV04ADWMICID 7/27/06 8:30 Sunny > 72 hours None None Clear01/18/2007 Datasharing Format for Dry Weather Monitoring 2. Visual ObservationsCABV06DWMField Screening 7/25/06 11:15 Overcast > 72 hours None None ClearCABV08DWMField Screening 7/25/06 14:30 Overcast > 72 hours Rotten Eggs None ClearCABV08DWMICID 7/26/06 14:00 Overcast > 72 hours Rotten Eggs None ClearCABV09DWMField Screening 7/25/06 13:30 Overcast > 72 hours None None ClearCABV10DWMField Screening 7/25/06 15:25 Overcast > 72 hours None Yellow ClearCABV15DWMField Screening 7/25/06 14:00 Overcast > 72 hoursCABV16DWMField Screening 7/25/06 10:35 Overcast > 72 hours None Yellow ClearCAEN02ADWMField Screening 8/9/06 9:30 Sunny > 72 hours None Brown Slightly CloudyCAEN02BDWMField Screening 8/8/06 10:30 Sunny > 72 hours None Yellow ClearCAEN02CDWMField Screening 8/8/06 11:00 Sunny > 72 hours None None ClearCAEN02CDWMICID 8/9/06 8:50 Sunny > 72 hours None NoneCAEN09DWMField Screening 8/9/06 10:40 Sunny > 72 hours None None ClearCAEN14DWMField Screening 8/8/06 16:20 Sunny > 72 hours None Yellow Slightly CloudyCAEN14DWMICID 8/9/06 14:45 Sunny > 72 hours None Yellow Slightly CloudyCAEN14ADWMField Screening 8/9/06 15:00 Sunny > 72 hours None None Slightly CloudyCAEN14ADWMICID 8/10/06 8:35 Sunny > 72 hours None None Slightly CloudyCAEN18DWMField Screening 8/7/06 15:00 Sunny > 72 hours None Yellow Slightly CloudyCAEN19DWMField Screening 8/8/06 12:15 Sunny > 72 hours None None ClearCAEN20DWMField Screening 8/7/06 14:10 Sunny > 72 hours None Yellow ClearCAEN21DWMField Screening 8/7/06 16:00 Sunny > 72 hours None Yellow ClearCAEN21DWMICID 8/8/06 14:05 Sunny > 72 hours None Yellow ClearCAEN23DWMField Screening 8/10/06 9:05 Sunny > 72 hours None None ClearCAEN24DWMField Screening 8/7/06 15:40 Sunny > 72 hours None Yellow ClearCAEN31DWMField Screening 8/8/06 15:30 Sunny > 72 hours None None ClearCAEN31DWMICID8/9/06 14:30 Sunny > 72 hours None None Clear01/18/2007 Datasharing Format for Dry Weather Monitoring 2. Visual ObservationsFloatables Deposit Vegetation Biology Overland Flow CommentsTrash & Bubbles/Foam None Limited Algae NoSignificant amount of trash and debris around site.None None None Insect & Algae NoSheen None None Insect & Algae NoTrash None Normal Insects NoNone Fine particulate None None NoBubbles/Foam Fine particulate Normal Insect & Algae NoNone Fine particulate Normal Insect & Algae NoTrash Fine particulate Excessive Insects NoA lot of organic debris in channelTrash None Limited None NoTrash None Limited None NoNone Fine particulate Limited Insect & Algae NoNone Fine particulate Limited Insect & Algae NoTrash Fine particulate Excessive Insects NoTrash Fine particulate Excessive Insects NoVery still, stagnant water with a lot of organic debris. Water coming from one line up Valencia, and from Parbe.None Coarse & Fine Normal Insect & Algae & Snail & Fish NoThere is a lot of vegetation and sediment deposition in the channel - trash is caught up in it.None Coarse & Fine Limited Insect & Algae NoNone Fine particulate Limited Insect & Algae & Snail & Fish NoTrash Fine particulate Excessive Insect & Algae NoVery slow moving, stagnant water. Vegetation is excessive.Trash None Excessive Insects NoWater ponded, somewhat brackish, musty, strong smell, a lot of trash.Trash None Excessive Insects NoNone Fine particulate Normal Insect & Algae NoTrash Fine particulate Normal Insect & Algae NoNone Fine particulate Excessive Insect & Algae NoSignificant suspended particles in ammonia ampoule - unclear if ammonia was really that high.None Fine particulate Excessive Insect & Algae NoNone Fine particulate Normal Insects NoNone Coarse & Fine None None No01/18/2007 Datasharing Format for Dry Weather Monitoring 2. Visual ObservationsNone None None None NoNone None None None NoNone None None Algae NoBubbles/Foam None Normal Algae NoAlgae growth on surfaceNone None None None NoBubbles/Foam Fine particulate None None NoVery turbide flow of 8.0 gpm; discharge could not be located. 10 minutes later, flow lessened.None Fine particulate None None NoNone Coarse & Fine None None NoNone Coarse & Fine None None NoNone Fine particulate None Insects NoNone Fine particulate None None NoTrash Fine particulate None Insect & Algae NoNone None None None NoNone None None None NoTrash Fine particulate None Insect & Algae NoBubbles/Foam Fine particulate None Insect & Algae NoTrash Fine particulate Limited Insect & Algae NoSignificant algae and fine particulate deposition.None Coarse & Fine Normal Insect & Algae NoTrash Coarse & Fine Normal Insects NoTrash all around the outletBubbles/Foam Coarse & Fine None None NoNone Coarse & Fine None None NoBubbles/Foam None Normal Algae NoNone None None None NoTrash Fine particulate Normal Insect & Algae NoSome irrigation runoff flowing down AlgaNone None None None NoTrash & Bubbles/Foam Fine particulate Normal Insects NoVery still water, brackish, with a lot of bubbles and trash present.None None None Algae NoNone None None Algae NoGroundwater seepage into pipe under Jefferson St. (photos 19, 20). Other side of street is dry. Explains high conductivity. Crack in pipe is visible 01/18/2007 Datasharing Format for Dry Weather Monitoring 2. Visual ObservationsNone Fine particulate Normal Insects NoTrash on banks, but not observed in water. Significant amount of organic debris. Next to parking lot and Firestone Tire Car Care Service Auto shop. Fine sediment deposition, some foamy looking stuff in the sediment deposition.Trash Fine particulate Normal Algae No Elevated detergentsTrash Fine particulate Normal Algae NoNone None None None NoNone Fine particulate None Insect & Algae NoA lot of algae; thick sediment deposits.None None NoNone Fine particulate None None NoTrash, dry leaves to the side of the flow.Bubbles Fine particulate Normal Insects NoNone Fine particulate None Insect & Snail NoNone None None None NoNone None None None NoNone Fine particulate Normal Insect & Fish NoNone Fine particulate None None NoNone Fine particulate None None NoTrash & Bubbles/Foam None None None NoTrash & Bubbles/Foam None None None NoNone Coarse & Fine Normal Insects NoLot of Organic debris and clay in channel.None None None Insect & Algae & Snail & Fish NoTrash Fine particulate None Insect & Algae NoNone None None None NoNone None None None NoBubbles Coarse & Fine None None NoBubbles None None None No Water was brackishNone None None None NoNone None None None No01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site DescriptionField Name Copermittee StationID StationType Location WatershedCAAH Creek-1Inland Surface WaterEl Camino Real and Cannon Rd. intersection, North side of bridgeCarlsbadCABV Creek-1Inland Surface WaterHymar Dr., across from driving range, North of bridgeCarlsbadCAEN Creek-1Inland Surface WaterEast of Paseo Del Norte in Encinas Creek, just E of manhole along Paseo Del Norte, South of Palomar Aiport Rd.CarlsbadCASM Creek-1Inland Surface WaterBetween La Costa Ave. and Costa Del Mart Rd, Approx. 100 ft to the east of bridge on El Camino RealCarlsbad01/18/2007 Datasharing Format for Dry Weather Monitoring 1. Site DescriptionHSALatitude Longitude TBPage TBGrid LandUse_1 LandUse_2 Convey_Type904.31 33.14950 -117.29693 1107B7Residential Open Natural Creek904.21 33.18129 -117.32124 1106H2Open Residential Natural Creek904.4 33.11868 -117.31769 1126J4Open Commercial Natural Creek904.51 33.08822 -117.26659 1147E1Residential Parks Natural Creek01/18/2007 Datasharing Format for Dry Weather Monitoring 4. Analytical ResultsField Name Copermittee StationID StationType SampleEventType Date Time LabSampleMatrix AnalyteCAAH Creek-1Inland Surface Water Inland Surface Water7/27/06 11:45 EnviroMatrix AnalyWaterCadmium DissCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterCadmium DissCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterCadmium DissCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterCadmium DissCAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterChlorpyrifosCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterChlorpyrifosCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterChlorpyrifosCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterChlorpyrifosCAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterCopper DissCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterCopper DissCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterCopper DissCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterCopper DissCAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterDiazinonCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterDiazinonCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterDiazinonCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterDiazinonCAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterEnterococcusCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterEnterococcusCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterEnterococcusCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterEnterococcusCAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterFecal ColiformCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterFecal ColiformCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterFecal ColiformCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterFecal ColiformCAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterHardness Total as CaCO3CABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterHardness Total as CaCO3CAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterHardness Total as CaCO3CASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterHardness Total as CaCO3CAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterLead DissCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterLead DissCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterLead DissCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterLead DissCAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterMBASCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterMBASCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterMBASCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterMBASCAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterOil & GreaseCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterOil & GreaseCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterOil & GreaseCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterOil & GreaseCAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterTotal ColiformCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterTotal ColiformCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterTotal ColiformCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterTotal ColiformCAAH Creek-1Inland Surface Water Field Screening7/27/06 11:45 EnviroMatrix AnalyWaterZinc DissCABV Creek-1Inland Surface Water Field Screening7/26/06 10:40 EnviroMatrix AnalyWaterZinc DissCAEN Creek-1Inland Surface Water Field Screening8/7/06 11:40 EnviroMatrix AnalyWaterZinc DissCASM Creek-1Inland Surface Water Field Screening8/7/06 10:40 EnviroMatrix AnalyWaterZinc Diss01/18/2007 Datasharing Format for Dry Weather Monitoring 4. Analytical ResultsMethod Qualifier Result ReportingLimit Unit %SolidEPA 6020ND-995 ug/L -99EPA 6020ND-995 ug/L -99EPA 6020ND-995 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 6020ND-995 ug/L -99EPA 6020ND-995 ug/L -99EPA 6020ND-995 ug/L -99EPA 6020ND-995 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 8141AND-990.05 ug/L -99EPA 8141AND-990.05 ug/L -99SM 9230 A, BNone3,00020 MPN/100mL -99SM 9230 A, BNone8020 MPN/100mL -99SM 9230 A, BNone23020 MPN/100mL -99SM 9230 A, BNone13020 MPN/100mL -99SM 9221 B.ENone17,00020 MPN/100mL -99SM 9221 B.ENone13020 MPN/100mL -99SM 9221 B.ENone23020 MPN/100mL -99SM 9221 B.ENone8020 MPN/100mL -99EPA 200.7None892100 mg/L -99EPA 200.7None638100 mg/L -99EPA 200.7None727100 mg/L -99EPA 200.7None1120100 mg/L -99EPA 6020ND-995 ug/L -99EPA 6020ND-995 ug/L -99EPA 6020ND-995 ug/L -99EPA 6020ND-995 ug/L -99SM5540 CND-990.5 mg/L -99SM5540 CND-990.5 mg/L -99SM5540 CND-990.5 mg/L -99SM5540 CND-990.5 mg/L -99EPA 1664ND-995 mg/L -99EPA 1664ND-995 mg/L -99EPA 1664ND-995 mg/L -99EPA 1664ND-995 mg/L -99SM 9221 B.ENone900,000200 MPN/100mL -99SM 9221 B.ENone50,000200 MPN/100mL -99SM 9221 B.ENone50,000200 MPN/100mL -99SM 9221 B.ENone23,000200 MPN/100mL -99EPA 6020ND-9920 ug/L -99EPA 6020ND-9920 ug/L -99EPA 6020None2420 ug/L -99EPA 6020None2020 ug/L -9901/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsField Name Copermittee StationID StationType SampleEventType Date Time Width Depth Velocity WaterFlow FlowRateCAAH Creek-1Inland Surface WaterField Screening 7/27/06 11:45 Flowing332CABV Creek-1Inland Surface WaterField Screening 7/26/06 10:40 Flowing561CAEN Creek-1Inland Surface WaterField Screening 8/7/06 11:40 Flowing15CASM Creek-1Inland Surface WaterField Screening 8/7/06 10:40 Flowing351CAAH Creek-1Inland Surface WaterField Screening 7/27/06 11:45 Flowing332CABV Creek-1Inland Surface WaterField Screening 7/26/06 10:40 Flowing561CAEN Creek-1Inland Surface WaterField Screening 8/7/06 11:40 Flowing15CASM Creek-1Inland Surface WaterField Screening 8/7/06 10:40 Flowing351CAAH Creek-1Inland Surface WaterField Screening 7/27/06 11:45 Flowing332CABV Creek-1Inland Surface WaterField Screening 7/26/06 10:40 Flowing561CAEN Creek-1Inland Surface WaterField Screening 8/7/06 11:40 Flowing15CASM Creek-1Inland Surface WaterField Screening 8/7/06 10:40 Flowing351CAAH Creek-1Inland Surface WaterField Screening 7/27/06 11:45 Flowing332CABV Creek-1Inland Surface WaterField Screening 7/26/06 10:40 Flowing561CAEN Creek-1Inland Surface WaterField Screening 8/7/06 11:40 Flowing15CASM Creek-1Inland Surface WaterField Screening 8/7/06 10:40 Flowing351CAAH Creek-1Inland Surface WaterField Screening 7/27/06 11:45 Flowing332CABV Creek-1Inland Surface WaterField Screening 7/26/06 10:40 Flowing561CAEN Creek-1Inland Surface WaterField Screening 8/7/06 11:40 Flowing15CASM Creek-1Inland Surface WaterField Screening 8/7/06 10:40 Flowing351CAAH Creek-1Inland Surface WaterField Screening 7/27/06 11:45 Flowing332CABV Creek-1Inland Surface WaterField Screening 7/26/06 10:40 Flowing561CAEN Creek-1Inland Surface WaterField Screening 8/7/06 11:40 Flowing15CASM Creek-1Inland Surface WaterField Screening 8/7/06 10:40 Flowing351CAAH Creek-1Inland Surface WaterField Screening 7/27/06 11:45 Flowing332CABV Creek-1Inland Surface WaterField Screening 7/26/06 10:40 Flowing561CAEN Creek-1Inland Surface WaterField Screening 8/7/06 11:40 Flowing15CASM Creek-1Inland Surface WaterField Screening 8/7/06 10:40 Flowing351CAAH Creek-1Inland Surface WaterField Screening 7/27/06 11:45 Flowing332CABV Creek-1Inland Surface WaterField Screening 7/26/06 10:40 Flowing561CAEN Creek-1Inland Surface WaterField Screening 8/7/06 11:40 Flowing15CASM Creek-1Inland Surface WaterField Screening 8/7/06 10:40 Flowing35101/18/2007 Datasharing Format for Dry Weather Monitoring 3. Field MeasurementsAnalyteMethodQualifier Result ReportingLimitUnitAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.20.05 mg/LAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.10.05 mg/LAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.30.05 mg/LAmmonia (NH3-N)CHEMetrics CHEMets Kit None0.30.05 mg/LConductivityHanna Instruments HI 991None2.930.01 mS/cmConductivityHanna Instruments HI 991None2.160.01 mS/cmConductivityHanna Instruments HI 991None2.930.01 mS/cmConductivityHanna Instruments HI 991None3.800.01 mS/cmMBASCHEMetrics CHEMets Kit None0.250.13 mg/LMBASCHEMetrics CHEMets Kit None0.250.13 mg/LMBASCHEMetrics CHEMets Kit None0.50.13 mg/LMBASCHEMetrics CHEMets Kit None0.50.13 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None2.51.25 mg/LNitrate (NO3-N)CHEMetrics CHEMets Kit None1.251.25 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.030.016 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.070.016 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.490.016 mg/LOrthophosphate (PO4-P)CHEMetrics CHEMets Kit None0.100.016 mg/LpHHanna Instruments HI 991None7.90.01 pH unitpHHanna Instruments HI 991None8.10.01 pH unitpHHanna Instruments HI 991None7.30.01 pH unitpHHanna Instruments HI 991None7.70.01 pH unitTemperatureHanna Instruments HI 991None29.20.1 oCTemperatureHanna Instruments HI 991None25.50.1 oCTemperatureHanna Instruments HI 991None22.00.1 oCTemperatureHanna Instruments HI 991None24.20.1 oCTurbidityHanna Instruments HI 937None4.240.01 NTUTurbidityHanna Instruments HI 937None1.730.01 NTUTurbidityHanna Instruments HI 937None8.140.01 NTUTurbidityHanna Instruments HI 937None3.930.01 NTU01/18/2007 Datasharing Format for Dry Weather Monitoring 2. Visual ObservationsField Name Copermittee StationID StationType SampleEventType Date Time Weather Rainfall Odor Color Clarity CAAH Creek-1Inland Surface WaterField Screening 7/27/06 11:45 Sunny >72 hours None None ClearCABV Creek-1Inland Surface WaterField Screening 7/26/06 10:40 Sunny >72 hours None None ClearCAEN Creek-1Inland Surface WaterField Screening 8/7/06 11:40 Sunny > 72 hours None None ClearCASM Creek-1Inland Surface WaterField Screening 8/7/06 10:40 Partly Cloudy > 72 hours None None Clear01/18/2007 Datasharing Format for Dry Weather Monitoring 2. Visual ObservationsFloatables Deposit Vegetation Biology Overland Flow CommentsTrash None Normal Insect & Algae NoPaw prints (visible) from dogs; smelled like dog feces under bridge.None None Normal Insect & Algae & Snail & Fish NoNone None Excessive Insects NoTrash & Bubbles/Foam None Normal Insect & Algae No01/18/2007 Appendix C Field Data Sheets