DRINKING WATER CONTAMINANT LEVELS. Table 1: Microorganism Indicators

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1 DRINKING WATER CONTAMINANT LEVELS Table 1: Microorganism Indicators Maximum Level -- HVAC ea FL Sink Sink Total Coliforms 'Negative' b Negative Negative Negative Negative Negative Negative Negative Negative (including fecal coliform and E. Cob) Turbidity < Note a: Maximum Level (MCL) - The highest level of a contaminant that is allowed in drinking water. MCLs are enforceable standards. Note b: Somewhat misleading for individual water source sampling. Goal for individual source sampling would be "negative". For water systems/suppliers, no more than 5.0% samples total coliform-positive (TC-positive) in a month. (For water systems that collect fewer than 40 routine samples per month, no more than one sample can be total coliform-positive per month.) Every sample that has total coliform must be analyzed for either fecal coliforms or E. co/i. If two consecutive IC-positive samples, and one is also positive for E.coli or fecal coliforms, system has an acute MCL violation. Note C: Reported in Nephelometric Turbidity Units (NTUs). Again, misleading for single source sampling. For systems that use conventional or direct filtration, at no time can turbidity (cloudiness of water) go higher than 1 Nephelometric Turbidity Unit (NTU), and samples for turbidity must be less than or equal to 0.3 NTUs in at least 95 percent of the samples in any month. Systems that use filtration other than the conventional or direct filtration must follow state limits, which must include turbidity at no time exceeding 5 NTUs. <#44 Result was below Method Detection Limit and Reporting Limit for the #### Reportable result but below regulatory limits or recommendations. *NW Result above the Method Detection Limit but below Reporting Limit for the Result above the MCL for the analyte. EFI Cm...Woo Sole Sanuas Table 1: Microorganism Indicators 1 of I

2 Table 2: Disinfection Byproducts Ofa_ Water Fountain 2"d FL HVAC Bld Sink 15t FL Sink Bromate < g < Chlorite < < < < < < < < Total Haloacetic Acids (HAA5) N/A C < < < < < Dichloroacetic Acid - 0 < < < < < < < < Trichloroacetic Acid < < ' < < < ' Monochloroacetic Acid < < < < < < < < _ a Monobromoacetic Acid - < < < < < < < < _ a Dibromoacetic Acid - < < < < < < < < Total Trihalomethanes (TTHMs) N/A e Dichlorobromomethane " " " " " h " " Bromoform - 0 < < < < < < < < Chlorodibromomethane < < < < ' < < < Chloroform Note a: Maximum Level (MCL)- The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to MCLGs as feasible using the best available treatment technology and taking cost into consideration. MCLs are enforceable standards. Maximum Level Goal (MCLG) - The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety and are nonenforceable public health goals. Note h: Milligrams per liter, equivalent to parts per million. Note e: Although there is no collective MCLG for this contaminant group, there are MCLGs for some of the individual contaminants: dichloroacetic acid; trichloroacetic acid; and monochloroacetic acid. Note d: Monobromoacetic acid and dibromoacetic acid are regulated with this group but have no individual MCLGs. Note e: Although there is no collective MCLG for this contaminant group, there are MCLGs for some of the individual contaminants: dichlorobromomethane; bromoforrn; chlorodibromomethane; and chloroform. Note f: Analyte concentration was identified above the method detection limit (MDL) but below the reporting limit (RL). Indicated concentration should be considered an estimate. Note g: Analyte concentration was identified above the method detection limit (MDL) but below the reporting limit (RL). Indicated concentration should be considered an estimate. The estimate was above the MCLG, but below the MCL. Note h: Analyte concentration was identified above the method detection limit (MDL) but below the reporting limit (RL). Indicated concentration should be considered an estimate. Although there is no MCL for this chemical, the estimated concentration is above the MCLG. EFI Comb tau. 5o4 Sonnzna <#44# - Result was below Method Detection Limit and Reporting Limit for the ####- Reportable result but below regulatory limits or recommendations. NNW - Result above the MCL for the analyte. Table 2: Disinfection Byproducts 1 of 1

3 Table 3: Inorganic Chemicals Ofica_31LA I. 1 s1 FL Water Fountain Office. HVAC 2" FL. HVAC Bld Sink 1 5t FL Sink Antimony < < < < < < < < Arsenic ? ' ' ' < ' Asbestos (fiber > 10 micrometers) 7 MFL ' 7 MFL c <0.19 MFL c <0.19 MFL c <0.18 MFL c <0.18 MFL c <0.18 MFL c <0.18 MFL c <0.19 MFL c <0.19 MFL c Barium Beryllium < < < < < < < < Cadmium < < < Chromium (total) < < < < < < < < Copper 1.3 Action Level d ' ' ' ' ' ' ' ' Cyanide (as free cyanide) < < < < ' < < < Fluoride Lead " " ' " " " ' ' Action Level e Mercury (inorganic) < < < < < < < < Nitrate (measured as Nitrogen) Nitrite (measured as Nitrogen) 1 1 <0.023 <0.023 <0.023 <0.023 < <0.023 <0.023 Selenium < < < < < < < < Thallium < < < < < < < < Note a: Maximum Level (MCL) - The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to MCLGs as feasible using the best available treatment technology and taking cost into consideration. MCLs are enforceable standards. Maximum Level Goal (MCLG)- The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety and are nonenforceable public health goals. Note h: Reported as milligrams per liter (equivalent to parts per million) unless noted otherwise. Note C: Reported as millions of fibers (longer than 10 microns) per liter. Note d: This is somewhat misleading for single source sampling. Copper is regulated by a requirement for systems (i.e., municipalities, water districts, etc.) to control the corrosiveness of their water. If more than 10% of tap water samples exceed the action level, water systems must take additional steps. For copper, the action level is 1.3 mg/l. Note e: This is somewhat misleading for single source sampling. Lead is regulated by a requirement for systems (i.e., municipalities, water districts, etc.) to control the corrosiveness of their water. If more than 10% of tap water samples exceed the action level, water systems must take additional steps. For lead, the action level is mg/l. Note f: Analyte concentration was identified above the method detection limit (MDL) but below the reporting limit (RL). Indicated concentration should be considered an estimate. The estimate was above the MCLG, but below the MCL. Note Analyte was identified using two separate methods. Note h: Lead concentration was identified above the method detection limit (MDL) but below the reporting limit (RL). Indicated concentration should be considered an estimate. The estimate was above the MCLG, but below the MCL "Action Level" Note `: The detected lead concentration was above the MCLG, but below the MCL "Action Level". EFIe Ca. Inues Woe Result was below Method Detection Limit and Reporting Limit for the #### - Reportable result but below regulatory limits or recommendations. #### - Result above the MCL for the analyte. Table 3: Inorganic Chemicals 1 of 1 EF1 Project

4 Table 4: Organic Chemicals Office 3l_cI 1' FL 2nd FL Sink 1" FL 1" FL 1" FL Sink 1" FL Alachlor c < c < < < < < Atrazine e < e e < < < < Benzene < < < < < < < < Benzo(a)pyrene (PAHs) < < < < < < < < Carbofuran < < < < < < < < Carbon Tetrachloride < < < < < < < < Chlordane < < < < < < < < Chlorobenzene < < < < < < < < ,4,D (2, < < < < < < < < Dichlorophenoxyacetic Acid) Dalapon < < < < < < < < ,2-Dibromo-3-chloropropane < < < < < < < < (DBCP) 1,2-Dichlorobenzene < < < < < < < < ,4-Dichlorobenzene < < < < < < < < ,2-Dichloroethane < < < < < < < < ,1-Dichloroethene < < < < < < < < cis-1,2-dichloroethene < < < < < < < < trans-1,2-dichloroethene < < < < < < < < Methylene chloride < < < < < < < < ,2-Dichloropropane < < < < < < < < Di(2-ethylhexyl) adipate < < < < < < < < Bis(2-ethylhexyl) phthalate < < < < < < < < Dinoseb < < < < < < < < Dioxin (2,3,7,8-TCDD) ND " ND' ND g ND " ND g ND' ND ' ND " Diquat < < < < < < < < Endothall < < < < < < < < Endrin < < < < < < < < Ethylbenzene < < < < < < < < Ethylene dibromide < < < < < < < < Glyphosate < < < < < < < < Heptachlor < < < < < < < < Heptachlor epoxide < < < < < < < < Hexachlorobenzene < < < < < < < < Gamma-BHC (Lindane) < < < < < < < < Methoxychlor < < < < < < < < Oxamyl (Vydate) < < < < < < < < Polychlorinated biphenyls (PCBs) < < < < < < < < EFI Table 4: Organic Chemicals 1 of 2 Comdu Us Sda SeM

5 Oft3lc li I 1a1 FL 3"1 FL 2nd FL HVAC Bld. Sink 15f FL Sink 15f FL Pentachlorophenol < < < < < < < < Picloram < < < < < < < < Simazine e < < < e Styrene < < < < < < < < Tetrachloroethene < < < < < < < < Toluene 1 1 < < < < < < < < Toxaphene < < < < < < < < Silvex (2,4,5-TP) < < < < < < < < ,2,4-Trichlorobenzene < < < < < < < < ,1,1-Trichloroethane < < < < < < < < ,1,2-Trichloroethane < < < < < < < < Trichloroethene < < < < < < < < Vinyl chloride < < < < < < < < Xylenes (total) _ < < < < < < < < Note a: Maximum Level (MCL) - The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to MCLGs as feasible using the best available treatment technology and taking cost into consideration. MCLs are enforceable standards. Maximum Level Goal (MCLG) - The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety and are nonenforceable public health goals. Note b: Reported as milligrams per liter (equivalent to parts per million) unless noted otherwise. Note C: Analyte was present in low concentration (i.e., above the minimum detection level but below reportable limit for the analysis). This is also greater than the target value of zero. Reported value should be viewed as an estimate. Note d: Reported by the lab as "Non-Detect." In this case, below the estimated detection limit (EDL) of mg/l (or pg/l). Note e: Analyte was present in low concentration (i.e., above the minimum detection level but below reportable limit for the analysis). Reported value should be viewed as an estimate. Note f: Reported by the lab as "Non-Detect." In this case, below the estimated detection limit (EDL) of mg/l (or pg/l). Note g: Reported by the lab as "Non-Detect." In this case, below the estimated detection limit (EDL) of mg/l (or pg/l). Note Reported by the lab as "Non-Detect." In this case, below the estimated detection limit (EDL) of mg/l (or pg/l). Note Reported by the lab as "Non-Detect." In this case, below the estimated detection limit (EDL) of mg/l (or pg/l). Note Reported by the lab as "Non-Detect." In this case, below the estimated detection limit (EDL) of mg/l (or pg/l). Note k: Reported by the lab as "Non-Detect." In this case, below the estimated detection limit (EDL) of mg/l (or pg/l). EFT@ 91obal CIM nun Saha Saucen <### - Result was below Method Detection Limit and Reporting Limit for the #4*## - Reportable result but below regulatory limits or recommendations. #### - Result above the MCL for the analyte. Table 5: General Characteristics (Secondary Standards) 2 of 2

6 Attainment Level (mg/l) a Table 5: General Characteristics (Secondary Standards) HVAC 2da FL Sink HVAC Bld. 1 5t FL Sink Aluminum <0.024 <0.024 <0.024 <0.024 <0.024 < e e Chloride Color 15 Color Units 15 Color Units 15 Color Units 10 Color Units 10 Color Units 10 COlor Units 10 Color Units 15 Color Units 15 Color Units Corrosivity Non-Corrosive t Foaming Agents b 0.5 <0.12 <0.12 <0.12 <0.12 <0.12 <0.12 <0.12 <0.12 Iron < Manganese e e e < e e e Odor 3 TON <1.0 TON <1.0 TON c <1.0 TON <1.0 TON ' <1.0 TON c <1.0 TON c <1.0 TON <1.0 TON ph a a d ri Silver 0.1 < < < < < < < < Sulfates Total Dissolved Solids Zinc General Note: Secondary standards are NOT regulatory standards. They are recommendations by the EPA to achieve a quality water supply. Note a: Reported as milligrams per liter (equivalent to parts per million) unless noted otherwise. Note b: Measured using Methylene Blue Active Substances methodology. Note a: Threshold Odor Number. Note d: Analyte was identified using two separate methods. Note e: Analyte was present in low concentration (i.e., above the minimum detection level but below reportable limit for the analysis). Reported value should be viewed as an estimate. Note f: The reported value is based on the Langelier Index, which is defined as the difference between actual ph (measured) and calculated phs. The magnitude and sign of the LI value show water's tendency to form or dissolve scale and thus inhibit or encourage corrosion. If the actual ph of the water is below the calculated saturation ph, the LSI is negative and the water has a very limited scaling potential. If the actual ph exceeds phs, the LSI is positive, and being supersaturated with CaCO3, the water has a tendency to form scale. At increasing positive index values, the scaling potential increases. In practice, water with an LSI between -0.5 and +0.5 will not display enhanced mineral dissolving or scale forming properties. Water with an LSI below -0.5 tends to exhibit noticeably increased dissolving abilities while water with an LSI above +0.5 tends to exhibit noticeably increased scale forming properties. EFI Complex Issues Stiod Solutins <### - Result was below Method Detection Limit and Reporting Limit for the #### - Reportable result but below regulatory limits or recommendations. WWI - Result above the MCL for the analyte. Table 5: General Characteristics (Secondary Standards) 1 of 1