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HomeMy WebLinkAboutAgenda Report - February 20, 2019 Public CommentAmanda Lee, member of the public, presented materials (filed) regarding what she believes is an environmental crisis on the Mokelumne River resulting from the impact of the California Department of Transportation (Caltrans) homeless encampment at Highway 99 near the river. Specific topics of discussion in her presentation included background information on the source of Lodi's drinking water; known contaminants in Lodi's water supply; information about Cryptosporidium ("Crypto"); details and photographs about the homeless encampment; call to Caltrans to stop the homeless from polluting the water in the Mokelumne River; interesting findings regarding the homeless; and questions for the City. Ms. Lee further reported there is an individual in the area who has threatened her with an axe, which prompted her to repair the fence because the homeless continue to cut it to go through the neighbor's private property to urinate, defecate, and throw garbage. At this point, Curtis Lee, member of the public, ceded his five minutes to Ms. Lee. She continued that part of the problem is the area has three jurisdictions: San Joaquin County Sherriffs Office, Lodi Police Department, and California Highway Patrol. She encouraged the City and County to collaborate efforts with Caltrans as there seems to be confusion over jurisdictional lines. She pointed out that the dirt along the river is stained red, which could be red phosphorus for methamphetamine production, and she often sees the homeless dumping contaminants in the river. She requested Caltrans evict the homeless tenants, secure the area, and decontaminate the biohazard waste. At this point, Andre Crockett, member of the public, ceded his five minutes to Ms. Lee so she could ask questions of the City as listed in her presentation materials. Public Works Director Charlie Swimley provided answers to Ms. Lee's questions that covered topics such as the Annual Water Quality Report, last environmental impact study, list of contaminated wells, the PCE/TCE cleanup and monitoring report, and ways to protect drinking water from contamination. Travis Kahrs, Water Plant Superintendent, provided information on the water monitoring report sample dates from 2013. City Manager Schwabauer provided information on a broader prospective and detailed the City's efforts to address homelessness, including the many shelters, the Committee on Homelessness, creation of a workforce job training program, application and receipt of grant funds for affordable housing, and participation in the Continuum of Care. He added that homelessness is a complicated, national social problem that no city has solved. He encouraged the public to participate in meetings of the Committee on Homelessness. Mayor Chandler thanked Ms. Lee for providing him a tour of her neighborhood. Afterward, he met with the City Manager and City Attorney, and they came up with a multi -prong approach to outreach with representatives from various agencies. To date, contacts have been made with Assemblymember Jim Cooper to assist with Caltrans and CHP and the Lodi Police Captains to work with Sherriff Whithrow. Mr. Schwabauer encouraged Ms. Lee to speak to Police Chief Tod Patterson about the individual armed with an axe. Mr. Swimley offered to provide a tour to Ms. Lee and her neighbors of the state-of-the-art Water Treatment Facility that was designed to provide high quality, safe drinking water. An unidentified individual and neighbor of Ms. Lee stated she has been dealing with the homeless situation, water contamination, and illegal drugs in the neighborhood for a long time and reported she often sees individuals dumping or dropping off barrels in the middle of the night. As responsive as Lodi Police Department is when she calls the non -emergency line, by the time officers arrive, these individuals leave and there is nothing officers can do. She stated she supports her neighbor and the Police Department and encouraged the City to be more proactive in this matter. Mr. Schwabauer reported there are eight police officers entering the academy who should be ready for patrol in 10 or so months. The City advanced Measure L funds at its last meeting in order to meet the academy deadline which begins in March. One of the officer positions will be a Community Liaison Officer for homeless issues, which will add greater assistance and resources in addressing these types of calls. Craig Troxclair, member of the public, stated he volunteers with Caltrans' Adopt -a -Highway Program and shared his experience with what Caltrans goes through when dealing with homeless encampments, including posting the property for 72 hours, video recording the process in case anything of value is damaged or taken, and the fear of homeless advocate lawyers suing over how the process was handled. He stated Caltrans can do a better job, but he acknowledged it has many hoops to jump through to clean up properties. Further, Mr. Troxclair expressed his strong opposition to smoking and tobacco products and encouraged Council to strengthen no - smoking laws, such as prohibiting smoking in parks and on sidewalks and perhaps even banning cigarette sales. Lisa Hosman, member of the public, reported that her neighborhood has a significant rat problem, which she has tried to address with extermination and conversations with neighbors and county health inspectors. She would like the situation to improve and suggested the City look at a program that Stockton has in which it inspects all rental properties every five years to ensure they are safe and clean. Mushtaq Tahirkheli, member of the public, commented on the Delta College campus that was scheduled to come to Lodi but never came to fruition, stating he and a group of friends are working to continue these discussions with the Delta College Board of Trustees. He asked Council to support his efforts. John Hall, member of the public, stated he too lives in the neighborhood near the Mokelumne River and shared his issues and concerns with the homeless encampments in the area, stating the area went from idyllic and safe to frightening with drugs, vandalism, graffiti, garbage, and human waste. He stated the aggressiveness of the homeless is getting worse and he is afraid someone will be hurt as a result. Chief Patterson shared with the public that recent legislation has tied the hands of police by lowering the thresholds on crimes, which quickly puts criminals back on the streets. He encouraged the public to study legislative bills, such as Propositions 47 and 57, before voting on them because these laws are allowing criminals to stay on the streets. He stated the City is doing all it can to address the homeless situation, as well as organizations such as Take Back Lodi, and everyone needs to work harder to make this successful. He encouraged those in attendance to speak with him further after the meeting. Mayor Pro Tempore Kuehne thanked the neighbors for sharing their concerns and reported on his efforts in working on this issue, including involvement in the Committee on Homeless and the County's Continuum of Care and participation in the HEAP grant application process that brought in $1.25 million for Lodi. The City has helped get over 100 people off of the streets and into rehabilitation centers or shelters; Take Back Lodi is working to address the situation; many people donated their time to volunteer for the point -in -time count; the public donated money to the Police Department for a truck for the Homeless Community Liaison Officer to pick up shopping carts; and Measure L recently passed that will hire more Police Officers and another Homeless Community Liaison Officer. He added the Grand Jury points to Lodi as a role model based on its efforts to address homelessness and that he continues to search out other ideas and programs both locally and nationally. E. Comments by the City Council Members on Non -Agenda items Council Member Mounce concurred with Chief Patterson that legislation, such as Propositions 47 and 57, has downgraded a number of violent crimes that can no longer be prosecuted and realignment has pushed low offenders back onto the streets, mostly criminals who continue to do drugs and commit acts of violence. She shared some of her experiences in dealing with the homeless, including touring sites with trash and human waste, homeless individuals sleeping on her porch, attempted assault against her by a homeless man at Lawrence Park, and her family's rental becoming ransacked and damaged by a group of homeless individuals. As a League of California Cities Board Member, she and her colleagues are working with the new Governor and OFFICE OF ENVIRONMENTAL HEALTH HAZARD ASSESSMENT Public Health Goals Health Risk information for Public Health Goal Exceedance Reports February 2019 Pesticide and Environmental Toxicology Branch Office of Environmental Health Hazard Assessment California Environmental Protection Agency Health Risk Information for Public Health Goal Exceedance Reports Prepared by Office of Environmental Health Hazard Assessment California Environmental Protection Agency February 2019 Under the Calderon -Sher Safe Drinking Water Act of 1996 (the Act), public water systems with more than 10,000 service connections are required to prepare a report every three years for contaminants that exceed their respective Public Health Goals (PHGs).1 This document contains health risk information 'on regulated drinking water contaminants to assist public water systems in preparing these reports. A PHG is the concentration of a contaminant in drinking water that poses no significant health risk if consumed for a lifetime. PHGs are developed and published by the Office of Environmental Health Hazard Assessment (OEHHA) using current risk assessment principles, practices and methods.2 The water system's report is required to identify the health risk category (e.g., carcinogenicity or neurotoxicity) associated with exposure to each regulated contaminant in drinking water and to include a brief, plainly worded description of these risks. The report is also required to disclose the numerical public health risk, if available, associated with the California Maximum Contaminant Level (MCL) and with the PHG for each contaminant. This health risk information document is prepared by OEHHA every three years to assist the water systems in providing the required information in their reports. Numerical health risks: Table 1 presents health risk categories and cancer risk values for chemical contaminants in drinking water that have PHGs. The Act requires that OEHHA publish PHGs based on health risk assessments using the most current scientific methods. As defined in statute, PHGs for non -carcinogenic 1 Health and Safety Code Section 116470(b) 2 Health and Safety Code Section 116365 Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 1 chemicals in drinking water are set at a concentration "at which no known or anticipated adverse health effects will occur, with an adequate margin of safety." For carcinogens, PHGs are set at a concentration that "does not pose any significant risk to health." PHGs provide one basis for revising MCLs, along with cost and technological feasibility. OEHHA has been publishing PHGs since 1997 and the entire list published to date is shown in Table 1. Table 2 presents health risk information for contaminants that do not have PHGs but have state or federal regulatory standards. The Act requires that, for chemical contaminants with California MCLs that do not yet have PHGs, water utilities use the federal Maximum Contaminant Level Goal (MCLG) for the purpose of complying with the requirement of public notification. MCLGs, like PHGs, are strictly health based and include a margin of safety. One difference, however, is that the MCLGs for carcinogens are set at zero because the US Environmental Protection Agency (US EPA) assumes there is no absolutely safe level of exposure to such chemicals. PHGs, on the other hand, are set at a level considered to pose no significant risk of cancer; this is usually no more than a one -in -one -million excess cancer risk (1x10-6) level for a lifetime of exposure. In Table 2, the cancer risks shown are based on the US EPA's evaluations. For more information on health risks: The adverse health effects for each chemical with a PHG are summarized in a PHG technical support document. These documents are available on the OEHHA website (http://www.oehha.ca.gov). Also, technical fact sheets on most of the chemicals having federal MCLs can be found at http://www.epa.gov/your-drinking-waterltable-regulated-drinking-water-contaminants. Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 2 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG (mg/L)2at Cancer Risk3 the PHG California MCL4 (mg/L) Cancer Risk at the California MCL Alachlor carcinogenicity (causes cancer) 0.004 NA5,6 0.002 NA Aluminum neurotoxicity and immunotoxicity (harms the nervous and immune systems) 0.6 NA 1 NA Antimony digestive system toxicity (causes vomiting) 0.02 NA 0.006 NA Arsenic carcinogenicity (causes cancer) 0.000004 (4x10-6) 1x10-6 (one per million) 0.01 2.5x10-3 (2.5 per thousand) Asbestos carcinogenicity (causes cancer) 7 MFL' (fibers >10 microns in length) 1x10-6 7 MFL (fibers >10 microns in length) 1x10-6 (one per million) Atrazine carcinogenicity (causes cancer) 0.00015 1x10-6 0.001 7x10-6 (seven per million) 1 Based on the OEHHA PHG technical support document unless otherwise specified. The categories are the hazard traits defined by OEHHA for California's Toxics Information Clearinghouse (online at: http://oehha.ca.gov/multimedia/green/pdf/GC Regtext011912 . pdf ). 2 mg/L = milligrams per liter of water or parts per million (ppm) 3 Cancer Risk = Upper bound estimate of excess cancer risk from lifetime exposure. Actual cancer risk may be lower or zero. 1 x10-6 means one excess cancer case per million people exposed. 4 MCL = maximum contaminant level. 5 NA = not applicable. Cancer risk cannot be calculated. 6 The PHG for alachlor is based on a threshold model of carcinogenesis and is set at a level that is believed to be without any significant cancer risk to individuals exposed to the chemical over a lifetime. MFL = million fibers per liter of water. Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 3 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG (mg/L)2at Cancer Risk3 the PHG California MCL4 (mg/L) Cancer Risk at the California MCL Barium cardiovascular toxicity (causes high blood pressure) 2 NA 1 NA Bentazon hepatotoxicity and digestive system toxicity (harms the liver, intestine, and causes body weight effects8) 0.2 NA 0.018 NA Benzene carcinogenicity (causes leukemia) 0.00015 1x10-6 0.001 7x10-6 (seven per million) Benzo[alpyrene carcinogenicity (causes cancer) 0.000007 (7x10-6) 1x10-6 0.0002 3x10-5 (three per hundred thousand) Beryllium digestive system toxicity (harms the stomach or intestine) 0.001 NA 0.004 NA Bromate carcinogenicity (causes cancer) 0.0001 1x10-6 0.01 1x10-4 (one per ten thousand) Cadmium nephrotoxicity (harms the kidney) 0.00004 NA 0.005 NA Carbofuran reproductive toxicity (harms the testis) 0.0007 NA 0.018 NA 8 Body weight effects are an indicator of general toxicity in animal studies. Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 4 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG (mg/L)2at Cancer Risk3 the PHG California MCL4 (mg/L) Cancer Risk at the California MCL Carbon carcinogenicity (causes cancer) 0.0001 1x10-6 0.0005 5x10-6 (five per million) tetrachloride Chlordane carcinogenicity (causes cancer) 0.00003 1x10-6 0.0001 3x10-6 (three per million) Chlorite hematotoxicity (causes anemia) neurotoxicity (causes neurobehavioral effects) 0.05 NA 1 NA Chromium, carcinogenicity (causes cancer) 0.00002 1x10-6 none NA hexavalent Copper digestive system toxicity (causes nausea, vomiting, diarrhea) 0.3 NA 1.3 (AL9) NA Cyanide neurotoxicity (damages nerves) endocrine toxicity (affects.the thyroid) 0.15 NA 0.15 NA Dalapon nephrotoxicity (harms the kidney) 0.79 NA 0.2 NA Di(2-ethylhexyl) developmental toxicity (disrupts development) 0.2 NA 0.4 NA adipate (DEHA) Diethylhexyl- carcinogenicity (causes cancer) 0.012 1x10-6 0.004 3x10-7 (three per ten million) phthalate (DEHP) 9 AL = action level. The action levels for copper and lead refer to a concentration measured at the tap. Much of the copper and lead in drinking water is derived from household plumbing (The Lead and Copper Rule, Title 22, California Code of Regulations [CCR] section 64672.3). Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 5 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG (mg/L)2at Cancer Risk3 the PHG California MCL4 (mg/L) Cancer Risk at the California MCL 1,2-Dibromo-3- carcinogenicity (causes cancer) 0.0000017 (1.7x10-6) 1x10-6 0.0002 1x10-4 (one per ten thousand) chloropropane (DBCP) 1,2-Dichioro- hepatotoxicity (harms the liver) 0.6 NA 0.6 NA benzene (o -DCB) 1,4-Dichioro- carcinogenicity (causes cancer) 0.006 1x10-6 0.005 8x10-7 (eight per ten million) benzene (p -DCB) 1,1-Dichioro- carcinogenicity (causes cancer) 0.003 1 x10-6 0.005 2x10-6 (two per million) ethane (1,1 -DCA) 1,2-Dichioro- carcinogenicity (causes cancer) 0.0004 1x10-6 0.0005 1x10-6 (one per million) ethane (1,2 -DCA) 1,1-Dichioro- . hepatotoxicity (harms the liver) 0.01 NA 0.006 NA ethylene (1,1-DCE) 1,2-Dichloro- nephrotoxicity (harms the kidney) 0.013 NA 0.006 NA ethylene, cis 1,2-Dichioro- immunotoxicity (harms the immune system) 0.05 NA 0.01 NA ethylene, trans Dichloromethane carcinogenicity (causes cancer) 0.004 1x106 0.005 1x10-6 (one per million) (methylene chloride) Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 6 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG 2 (mg/L) Cancer Risk3 at the PHG California MCL4 (mg/L) Cancer Risk at the California MCL 2,4-Dichloro- hepatotoxicity and nephrotoxicity (harms the liver and kidney) 0.02 NA 0.07 NA phenoxyacetic acid (2,4-D) 1,2-Dichloro- carcinogenicity (causes cancer) 0.0005 1 x 10-6 0.005 1x10-5 (one per hundred thousand) propane (propylene dichloride) 1,3-Dichloro- carcinogenicity (causes cancer) 0.0002 1x10-6 0.0005 2x10-6 (two per million) propene (Telone II®) Dinoseb reproductive toxicity (harms the uterus and testis) 0.014 NA 0.007 NA Diquat ocular toxicity (harms the eye) developmental toxicity (causes malformation) 0.006 NA 0.02 NA Endothall digestive system toxicity (harms the stomach or intestine) 0.094 NA 0.1 NA Endrin neurotoxicity (causes convulsions) hepatotoxicity (harms the liver) 0.0003 NA 0.002 NA Ethylbenzene hepatotoxicity (harms the liver) 0.3 NA 0.3 NA (phenylethane) Ethylene carcinogenicity (causes cancer) 0.00001 1x10-6 0.00005 5x10-6 (five per million) dibromide (1.2- Dibromoethane) Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 7 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG s (mg/L) Cancer Risk3 at the PHG California MCL4 (mg/L) Cancer Risk at the California MCL Fluoride musculoskeletal toxicity 1 NA 2 NA (causes tooth mottling) Glyphosate nephrotoxicity 0.9 NA 0.7 NA (harms the kidney) Heptachlor carcinogenicity 0.000008 1x10-6 0.00001 1x106 (causes cancer) (8x10-6) (one per million) Heptachlor carcinogenicity 0.000006 1 x10-6 0.00001 2x10-6 epoxide (causes cancer) (6x10-6) (two per million) Hexachloroben- carcinogenicity (causes cancer) 0.00003 1x10-6 0.001 3x10-5 (three per hundred thousand) zene Hexachloro- digestive system toxicity (causes stomach lesions) 0.002 NA 0.05 NA cyclopentadiene (HCCPD) Lead developmental 0.0002 <1x10-6 0.015 2x10-6 neurotoxicity (causes neurobehavioral effects in children) cardiovascular toxicity (PHG is not based on this effect) (AL8) (two per million) (causes high blood pressure) carcinogenicity (causes cancer) Lindane carcinogenicity (causes cancer) 0.000032 1x10-6 0.0002 6x10-6 (six per million) ly-BHC) Mercury nephrotoxicity 0.0012 NA 0.002 NA (inorganic) (harms the kidney) Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 8 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG (mg/L)2at Cancer Risk3 the PHG California MCL4 (mg/L) Cancer Risk at the California MCL Methoxychlor endocrine toxicity (causes hormone effects) 0.00009 NA 0.03 NA Methyl tertiary- carcinogenicity (causes cancer) 0.013 1x10-6 0.013 1x10-6 (one per million) butyl ether (MTBE) Molinate carcinogenicity (causes cancer) 0.001 1x10-6 0.02 2x10-5 (two per hundred thousand) Monochioro- nephrotoxicity (harms the kidney) 0.07 NA 0.07 NA benzene (chlorobenzene) Nickel developmental toxicity (causes increased neonatal deaths) 0.012 NA 0.1 NA Nitrate hematotoxicity (causes methemoglobinemia) 45 as nitrate NA 10 as nitrogen (=45 as nitrate) NA Nitrite hematotoxicity (causes methemoglobinemia) 3 as nitrite NA 1 as nitrogen (=3 as nitrite) NA Nitrate and hematotoxicity (causes methemoglobinemia) 10 as nitrogen10 NA 10 as nitrogen NA Nitrite 10 The joint nitrate/nitrite PHG of 10 mg/L (10 ppm, expressed as nitrogen) does not replace the individual values, and the maximum contribution from nitrite should not exceed 1 mg/L nitrite -nitrogen. Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 9 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG (mg/L)2at Cancer Risk3 the PHG California MCLS (mg/L) Cancer Risk at the California MCL N -nitroso- carcinogenicity (causes cancer) 0.000003 (3x10-6) 1 x10-6 none NA dimethyl -amine (NDMAj Oxamyl general toxicity (causes body weight effects) 0.026 NA 0.05 NA Pentachloro- carcinogenicity (causes cancer) 0.0003 1x10-6 0.001 3x10-6 (three per million) phenol (PCP) Perchlorate endocrine toxicity (affects the thyroid) developmental toxicity (causes neurodevelop- mental deficits) 0.001 NA 0.006 NA Picloram hepatotoxicity (harms the liver) 0.166 NA 0.5 NA Polychlorinated carcinogenicity (causes cancer) 0.00009 1 x10-6 0.0005 6x10-6 (six per million) biphenyls (PCBs) Radium -226 carcinogenicity (causes cancer) 0.05 pCi/L 1x10-6 5 pCi/L (combined Ra226+228) 1x10-4 (one per ten thousand) Radium -228 carcinogenicity (causes cancer) 0.019 pCi/L 1x10-6 5 pCi/L (combined Ra226+228) 3x10 - (three per ten thousand) Selenium integumentary toxicity (causes hair Toss and nail damage) 0.03 NA 0.05 NA Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 10 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG (mg/L)2at Cancer Risk3 the PHG California MCL4 (mg/L) Cancer Risk at the California MCL Silvex (2,4,5 -TP) hepatotoxicity (harms the liver) 0.003 NA 0.05 NA Simazine general toxicity (causes body weight effects) 0.004 NA 0.004 NA Strontium -90 carcinogenicity (causes cancer) 0.35 pCi/L 1x10-6 8 pCi/L 2x10-5 (two per hundred thousand) Styrene carcinogenicity (causes cancer) 0.0005 1x106 0.1 2x10-4 (two per ten thousand) (vinylbenzene) 1,1,2,2- carcinogenicity (causes cancer) 0.0001 1x10-6 0.001 1x10-5 (one per hundred thousand) Tetrachloro- ethane 2,3,7,8 -Tetra- carcinogenicity (causes cancer) 5x10-" 1x10-6 3x10.8 6x10-4 (six per ten thousand) chlorodibenzo p- dioxin (TCDD, or dioxin) Tetrachloro- carcinogenicity (causes cancer) 0.00006 1 x10-6 0.005 8x10-5 (eight per hundred thousand) ethylene (perchioro- ethylene, or PCE) Thallium integumentary toxicity (causes hair loss) 0.0001 NA 0.002 NA Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 11 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG z (mg/L) Cancer Risk3 at the PHG California MCL4 (mg/L) Cancer Risk at the California MCL Thiobencarb general toxicity (causes body weight effects) hematotoxicity (affects red blood cells) 0.042 NA 0.07 NA Toluene hepatotoxicity (harms the liver) endocrine toxicity (harms the thymus) 0.15 NA 0.15 NA (methylbenzene) Toxaphene carcinogenicity (causes cancer) 0.00003 1x10-6 0.003 1x104 (one per ten thousand) 1,2,4-Trichloro- endocrine toxicity (harms adrenal glands) 0.005 NA 0.005 NA benzene 1,1,1-Trichloro- neurotoxicity (harms the nervous system), reproductive toxicity (causes fewer offspring) hepatotoxicity (harms the liver) hematotoxicity (causes blood effects) 1 NA 0.2 NA ethane 1,1,2-Trichloro- carcinogenicity (causes cancer) 0.0003 1x10-6 0.005 2x10-5 (two per hundred thousand) ethane Trichloro- carcinogenicity (causes cancer) 0.0017 1x10-6 0.005 3x10-6 (three per million) ethylene (TOE) Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 12 Table 1: Health Risk Categories and Cancer Risk Values for Chemicals with California Public Health Goals (PHGs) Chemical Health Risk Category' California PHG (mg/L)2at Cancer Risk3 the PHG California MCL4 (mg/L) Cancer Risk at the California MCL Trichlorofluoro- accelerated mortality (increase in early death) 1.3 NA 0.15 NA methane (Freon 11) 12,3-Trichloro- carcinogenicity (causes cancer) 0.0000007 (7x10-7) 1x10-6 0.000005 (5x10-6) 7x10-6 (seven per million) propane (1,2,3 -TCP) 1,1,2-Trichloro- hepatotoxicity (harms the liver) 4 NA 1.2 NA 1 ,2,2-trifluoro- ethane (Freon 113) Tritium carcinogenicity (causes cancer) 400 pCi/L 1x106 20,000 pCi/L 5x10-5 (five per hundred thousand) Uranium carcinogenicity (causes cancer) 0.43 pCi/L 1x10-6 20 pCi/L 5x10-5 (five per hundred thousand) Vinyl chloride carcinogenicity (causes cancer) 0.00005 1x10-6 0.0005 1x10-5 (one per hundred thousand) Xylene neurotoxicity (affects the senses, mood, and motor control) 1.8 (single isomer or sum of isomers) NA 1.75 (single isomer or sum of isomers) NA Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 13 Table 2: Health Risk Categories and Cancer Risk Values for Chemicals without California Public Health Goals Chemical Health Risk Category' US EPA MCLG2 (mg/L) Cancer Risk3 @ MCLG California MCL4 (mg/L) Cancer Risk @ California MCL Disinfection byproducts (DBPs) Chloramines acute toxicity (causes irritation) digestive system toxicity (harms the stomach) hematotoxicity (causes anemia) 45,6 NA7 none NA Chlorine acute toxicity (causes irritation) digestive system toxicity (harms the stomach) 45,6 NA none NA Chlorine dioxide hematotoxicity (causes anemia) neurotoxicity (harms the nervous system) 0.856 NA none NA 1 Disinfection byproducts: haloacetic acids (HAAS) Monochloroacetic acid (MCA) general toxicity (causes body and organ weight changes8) 0.07 NA none NA Dichloroacetic acid (DCA) carcinogenicity (causes cancer) 0 0 none NA 1 Health risk category based on the US EPA MCLG document or California MCL document unless otherwise specified. 2 MCLG = maximum contaminant level goal established by US EPA. 3 Cancer Risk = Upper estimate of excess cancer risk from lifetime exposure. Actual cancer risk may be lower or zero. 1x10-6 means one excess cancer case per million people exposed. 4 California MCL = maximum contaminant level established by California. 5 Maximum Residual Disinfectant Level Goal, or MRDLG. 6 The federal Maximum Residual Disinfectant Level (MRDL), or highest level of disinfectant allowed in drinking water, is the same value for this chemical. NA = not available. 8 Body weight effects are an indicator of general toxicity in animal studies. Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 14 Table 2: Health Risk Categories and Cancer Risk Values for Chemicals without California Public Health Goals Chemical Health Risk Category1 US EPA CLG2 (mg//L) Cancer Risk3 @ MCLG California MCL4 (mg/L) Cancer Risk Cal fornia MCL Trichloroacetic acid (TCA) hepatotoxicity (harms the liver) 0.02 NA none NA Monobromoacetic acid (MBA) NA none NA none NA Dibromoacetic acid (DBA) NA none NA none NA Total haloacetic acids (sum of MCA, DCA, TCA, MBA, and DBA) general toxicity, hepatotoxicity and carcinogenicity (causes body and organ weight changes, harms the liver and causes cancer) none NA 0.06 NA Disinfection byproducts: trihalomethanes (THMs) Bromodichloro- methane (BDCM) carcinogenicity (causes cancer) 0 0 none NA Bromoform carcinogenicity (causes cancer) 0 0 none NA Chloroform hepatotoxicity and nephrotoxicity (harms the liver and kidney) 0.07 NA none NA Dibromo- chloromethane (DBCM) hepatotoxicity, nephrotoxicity, and neurotoxicity (harms the liver, kidney, and nervous system) 0.06 NA none NA Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 15 Table 2: Health Risk Categories and Cancer Risk Values for Chemicals without California Public Health Goals Chemical Health Risk Category' US EPA MCLG2 (mg/L) Cancer Risk3 @ MCLG California MCL4 (mg/L) Cancer Risk @ California MCL Total trihalomethanes (sum of BDCM, bromoform, chloroform and DBCM) carcinogenicity (causes cancer), hepatotoxicity, nephrotoxicity, and neurotoxicity (harms the liver, kidney, and nervous system) none NA 0.08 NA Radionuclides Gross alpha particles9 carcinogenicity (causes cancer) 0 (210Po included) 0 15 pCi/L10 (includes 226Ra but not radon and uranium) up to 1x10-3 (for 210Po, the most potent alpha emitter Beta particles and photon emitters9 carcinogenicity (causes cancer) 0 (210Pb included) 0 50 pCi/L (judged equiv. to 4 rnrem/yr) up to 2x103 (for 210Pb, the most potent beta - emitter) 9 MCLs for gross alpha and beta particles are screening standards for a group of radionuclides. Corresponding PHGs were not developed for gross alpha and beta particles. See the OEHHA memoranda discussing the cancer risks at these MCLs at http://www.oehha.ca.gov/water/reports/grossab.html. 10 pCi/L = picocuries per liter of water. Office of Environmental Health Hazard Assessment Water Toxicology Section February 2019 16 A Citizen's Inquiry Regarding the Environmental Impact of the CalTrans Homeless Encampment located at Hwy 99 - Mokelumne River February 20, 2019 Background: Source of Lodi's Drinking Water In 2018, treated surface water accounted for approximately 50% of Lodi's drinking water. Surface water is pulled directly off of the Mokelumne River at Lodi Lake and treated at the Surface Water Treatment Plant. w The remaining water demand is met by twenty-three computer controlled wells, located throughout the City, seven of which are equipped with Granular Activated Carbon filtration units to address DBCP contamination. Known Contaminants in Lodi's Water Supply Dibromochloropropane (DBCP) an agricultural chemical to kill nematodes in vineyards. It was banned in California in 1977, but is still present in trace levels in some groundwater. PCE (Tetrachloroethylene) and TCE (Trichloroethylene) Both chemicals have multiple industrial purposes. PCE is also a chemical associated with the manufacture of methamphetamines. Cryptosporidium, according to the City of Lodi 2017 Water Quality Report, is a microbial pathogen. The CDC describes Cryptosporidium as a water borne parasite, capable of causing diarrhea and gastrointestinal distress. More about Cryptosporidium ("Crypto") Crypto is transmitted by coming in contact with the feces of an infected person or animal. Swallowing as few as 10 Crypto germs can cause infection. An infected person can shed 10,000,000 to 100,000,000 Crypto germs in a single bowel movement. 10 Crypto is very resistant to the chlorine -based disinfectants typically used in water treatment and is one of the most common causes of waterborne disease (recreational water and drinking water) in humans in the United States. It can also be spread by touching surfaces or that have been contaminated by feces from an infected person. "The Bottoms" CalTrans Homeless Encampment located at Hwy 99 - Mokelumne River On Tuesday, February 12th, my husband and I risked life and limb repairing the fence that separates the CalTrans Encampment property and our neighbors adjacent property. During the 4 hours we spent at [he fence line, we spoke with many of the residents of the ,encampment and we were faced with some sobering realities about the homeless population and the encampment: mo The current population of the camp is around two dozen people plus about a dozen dogs, which fluctuates daily. Many of the residents feel that having a dog is essential to an individual's personal safety at the encampment. There is no sanitation whatsoever at this encampment (i.e. restroom facility, regular trash collection or dumpster, or clean water for hygiene or drinking). Imagine the volume of human and animal waste that is generated by 20+ humans and 12+ dogs. Untreated water from the Mokelumne River is used by the homeless for drinking and hygiene purposes. The residents of the encampment urinate and defecate on the perimeter of the CalTrans property and adjacent private properties, or directly into the river. The smell of human waste permeates the air, dirt, and water in the area. Feces and used toilet paper litter the ground. 100% of the residents we spoke to admitted to being frequent drug users, and while we were observing the encampment we witnessed what appeared to be drug trafficking activity. We escorted our Mayor, Mark Chandler, on a walking tour of the area on Sunday, February 17th Here are some photos that were taken between 2/10/2019 and 2/19/2019. Video: West side of highway 99 - CalTrans Encampment 2/10/2019 Video: West side of highway 99 - CalTrans Encampment 2/18/2019 Video: West side of highway 99 - CalTrans Encampment 2/19/2019 It was my understanding that CalTrans conducted a cleaning on 1/26/2019; however, this tent appears to have remained in the same location? Can someone explain the CalTrans clean up/ eviction process? Caltrans, Stop your "tenants" from polluting our water! The encampment's environmental impact to the Mokelumne River Watershed is undeniable. As an issue of health and safety, and to protect the Mokelumne River Watershed, we implore the City to take swift and immediate action to hold CalTrans accountable for their gross negligence in preventing the contamination of our surface water and surrounding properties, by demanding that CalTrans: Take immediate action to evict their "tenants" and prevent further contamination to the Mokelumne River. a Take drastic measures to permanently secure the CalTrans property. We must stop this totally ineffective cycle of semi-monthly "evict - clean-up - repeat" that's currently being used. A Work to clean, decontaminate, and restore the CalTrans property and adjacent properties that have been damaged by squatters. Other interesting findings... m Most of the resources available to the homeless are located in Stockton. We may be able to improve in this area by asking these outreach organizations to make semi-monthly/monthly trips to Lodi to provide services. r, There is no drug detox center in Lodi, or surrounding area. Per my conversation with a representative at Salvation Army, a person must be sober to be accepted into any of the local addiction rehab programs and the nearest drug detox center is in San Francisco, CA. It's my understanding that a detox facility is opening in Stockton, but it will not have an overnight facility. At night, the addicts attempting to detox will be turned loose into the streets. cm Rumor has it that some of the residents of the homeless encampment cannot utilize many of the available resources because they are registered sex offenders. This begs the question, how are these sexual predators monitored and how is the public to be made aware of their presence in the community? Questions for the City of Lodi What is the status of the 2018 Annual Water Quality Report and why does the city seek to approve a water rate increase prior to the release of that report? Can you discuss the findings? When was the last environmental impact study conducted on the CalTrans property? Has the city, county, or state done anything to monitor or measure the impact from the homeless encampment? 15 a water quality report for the Mokelumne River available? Please provide further information regarding the quality of untreated Mokelumne River water. This is important information that the public can use to assess and mitigate their risks when using the Mokelumne River and Lodi Lake for recreation purposes. Which wells are contaminated and where are they located? Con you explain the averages shown on the Water Report? For example, for Arsenic the range is 1 0.0 -ND, wJth an average of 3.7 parts per billion and the public health goal is 0.004 ppb. Hexavalent Chromium, the range is 5.2 -ND and the average is 1.8 ppb and there is no safe amount (maximum contaminant level) for Hexavalent Chromium. How is cryptosporidium being treated? If with chlorine, do you expect to be within the maximum contaminant levels for 2018? Do we have any records to show annual fluctuations in the use of chlorine? s Please explain why the TCE/PCE Clean-up and Monitoring Report and GAC Filtration and DBCP Reports are not published on the city website? Also, per the 2017 Water Quality Report. there is an Unregulated Containments Monitoring Rule. Can you explain this, as some of the sample dates are from 2013 and 2016? Specifically, 1,2,3-Trichloropropane2, a known carcinogenic, which hasn't been tested since 2016. In 2016, it had a range of 47 -ND. What, if anything, does the city plan to do to protect our drinking water from further contamination from homeless encampments? What is CalTrans doing to secure the property to prevent this from happening again? Please explain what the state, county, and city is doing to monitor and disclose homeless sex offenders in compliance with Megan's Law, California Penal Code § 290.46?