Department of the Environment. Annual Report Lead Poisoning Prevention Program

Department of the Environment Childhood Blood Lead Surveillance in Maryland Annual Report 2011 Lead Poisoning Prevention Program MARYLAND DEPARTMENT OF THE ENVIRONMENT 1800 Washington Boulevard Baltimore, MD 21230 www.mde.state.md.us/recycling 410-537-3314 800-633-6101 x3314 TTY Users: 800-735-2258 Martin O Malley, Governor Anthony G. Brown, Lt. Governor Robert Summers, Ph.D., Secretary 1

MARYLAND CHILDHOOD LEAD REGISTRY ANNUAL SURVEILLANCE REPORT 2011 EXECUTIVE SUMMARY The Maryland Department of the Environment s statewide Childhood Lead Registry (CLR) performs childhood blood lead surveillance for Maryland. The CLR receives the reports of all blood lead tests done on Maryland children 0-18 years of age, and the CLR provides blood lead test results to the Department of Health and Mental Hygiene including Medicaid and local health departments as needed for case management and planning. Since 1995, the CLR has released a comprehensive annual report on statewide childhood blood lead testing. This current report presents the childhood blood lead test results for calendar year (CY) 2011. All numbers are based on blood lead testing (venous or capillary) on children. The CLR does not receive any reports on lead screening based on the lead risk assessment questionnaire. With few exceptions all numbers referred to children 0-72 months of age. Maryland CY 2011 Surveillance Highlights: In 2011 a total of 126,554 blood lead tests from 121,524 children 0-18 years were received and processed by the CLR, of which 114,121 tests were from 109,534 children 0-72 months. Of those 109,534 children, 452 (0.4%) were identified with a blood lead level 10 µg/dl (prevalence). Of those 452 children 342 were indentified with their first venous or capillary blood lead level > 10 µg/dl (incidence). Of the 342 incident cases statewide, a total of 292 met the criteria for medical and environmental case management. There were a total of 130 incident cases in Baltimore City and a total of 162 incident cases in the remaining Maryland Counties. The highest testing rates for children 0-72 months were found in jurisdictions that require testing of all children at age 1 and 2 years. These include: Baltimore City (34.2%) Somerset County (31.5%), Allegany County (28.5%), and Worcester County (26.6%). The testing rate statewide for children 0-72 months was 21.9%. Not all children in Maryland are required to be blood lead tested. Based on Maryland s Targeting Plan for Areas at Risk for Childhood Lead Poisoning, children are required to have a blood lead test at ages 1 and 2 years if they meet any of the following criteria; (a) Live in an identified at-risk zip code, (b) Participate in Maryland s Medicaid EPSTD Program, (c) Positive response to Risk Assessment Questionnaire conducted on children up to age six years of age, as required. In Baltimore City, 130 children with the first venous blood lead level > 10 µg/dl received medical and environmental case management. In approximately 82 (63%) of 2

these cases children were living in a pre-1950 residential rental dwelling Affected Property. In the remaining 48 cases, 6 (5%) children were living in a post 1949 residential rental dwelling and 42 (32%) were living in owner occupied properties ( Non- Affected ). In Maryland Counties, 162 children with the first venous blood lead level > 10 µg/dl received medical and environmental case management. In approximately 34 (21%) of these cases children were living in a pre-1950 residential rental dwelling ( Affected Property ). In the remaining 128 cases, 66 (41%) children were living in a post 1949 residential rental dwelling and 62 (38%) were living in owner occupied properties ( Non- Affected ). In 2011, CLR received blood lead reports from 36 laboratories nationwide. Number of reports for the whole year varied from as low as 2 from one laboratory to more than 68,000 from another laboratory. More than 85% of reports however are from three major laboratories. These and five other laboratories sent their reports electronically (91.3%). The average reporting time, from the time sample is drawn to the time the result enters the CLR database is about 6 days. The average time for elevated blood lead results ( 10 µg/dl) is approximately 30 hours. News for 2011 Exposure to lead is still the most significant and widespread environmental hazards for children in Maryland. Children are at the greatest risk from birth to age six while their neurological systems are being developed. Exposure to lead can cause longterm neurological damage that may be associated with learning and behavioral problems and with decreased intelligence. There is no evidence of a blood lead level below which there are no health effects. The Centers for Disease Control and Prevention (CDC) concurs that the evidence shows that there is no threshold level for blood lead that can be considered safe. Since 1990 CDC maintained the blood lead level of 10µg/dL as level of concern. In March 2012, based on recommendation of the CDC s Advisory Committee on Childhood Lead Poisoning Prevention, CDC dropped the concept of a blood lead level of 10µg/dL as the Level of Concern and adopts the blood lead level of 5µg/dL as the new Reference Level. The new criteria is based on NHANES data which shows 97.5% of children aged 1-5 years have blood lead level at or below 5 µg/dl. CDC will update the Reference Value every four years based on the most recent population-based-blood-surveys conducted among children. Sources of Childhood Lead Exposure Lead paint dust from deteriorated lead paint or from renovation is the major source of exposure for children in Maryland. Out of estimated of 2,127,439 occupied residential houses in Maryland 358,068 (16.8%) were built before 1950 and 853,743 (40.1%) between 1950-1979. (Source: US Census Bureau, 2010 American Community Survey, 1-Year Estimates) A significant number of pre-1950 and 1950-1979 residential rental units have been made lead free. Untreated units in those groupings are highly likely and likely to have lead based paint respectively. Water, air, and soil, may provide low-level, background exposure, but rarely may cause childhood lead poisoning. Imported products, parental See Appendix C for a breakdown by jurisdiction on the number of children tested for the first time in 2011 with a blood lead level between 5-9 µg/dl. 3

Primary Prevention Efforts House Bill 644: Reducing the Incidence of Lead Poisoning In May of 2012, Governor Martin O Malley singed House Bill 644 that was passed during the 2012 legislative session in Maryland. House Bill 644 was introduced in repose to a report of findings of a study group designed to evaluate processes to further reduce the incidence of lead poisoning in Maryland. House Bill 644 has various components that relate to lead poisoning. The bill amends provisions of the Environment Article, Title 6, Subtitle 8, Reduction of Lead Risk in Housing Act ("Act) as well as Title 6, Subtitle 10, Accreditation of Lead Paint Abatement Services. Below is an overview of the components of HB 644 targeted at primary prevention HB 644: Expanding the Definition of Affected Property The initial portion of HB 644 seeks to further reduce the incidence of childhood lead poisoning in Maryland by expanding the universe of Affected Properties under the Act to also include residential rental dwelling units built 1950-1978. Because the residential use of lead based paint was not banned until 1978, the bill seeks to expand the primary prevention aspects of the Act that previously only mandated compliance for rental dwelling units built prior to 1950. Phase in-compliance will go into affect January 1, 2015. Issuance of Abatement Orders This portion of HB 644 provides the Department, health departments or other local jurisdictions the authority to order abatements in response to an investigation report of a lead poisoned person at risk. Abatements may be ordered in any residential building, including owner-occupied, rentals, child care facilities or pre-school facilities. The Department may enforce the provisions of the order. This becomes effective on June 1, 2012. Federal Renovation Rule The remaining portion of HB 644 amends the Environment Article Title 6, Subtitle 10, Accreditation of Lead Paint Abatement Services, to expand the definition of Abatement to include renovation, repair and painting (RRP) of lead-containing substances in a residential, public or commercial building built before 1978. It also gives the Department the authority to adopt regulations to carry out the provisions, including the accreditation of lead paint contractors and inspectors. This becomes affective on June 1, 2012. The Department will have to seek authorization from the EPA in order to enforce the RRP. 4

Statistical Report In calendar year 2011, a total of 114,121 children 0-72 months were tested for lead exposure statewide. Table One provides a summary of statewide statistics of blood lead testing in 2011. Table One Calendar Year (CY) 2011 Statistical Report 1 Item Number Percent (%) All Children Number of tests 126,554 Number of children 121,524 Children 0-72 Months Number of tests 114,121 Number of children 109,534 100.0 Age Under One 11,128 10.2 One Year 36,854 33.6 Two Years 29,774 27.2 Three Years 11,934 10.9 Four Years 11,822 10.8 Five Years 8,022 7.3 Sex Female 53,411 48.8 Male 55,601 50.8 Undetermined 522 0.4 Highest 4 106,342 97.1 5-9 2,740 2.5 10-14 267 0.2 15-19 95 0.1 20 90 0.1 Mean BLL (Geometric mean) 1.44 Blood Specimen Capillary 16,842 15.4 Venous 79,205 72.3 Undetermined 2 13,487 12.3 1. For detailed analysis and breakdown of numbers refer to Supplementary Data Tables 1-5. 2. In supplementary data tables blood tests with sample type unknown were counted as capillary. 5

Figure One Number of Children 0-72 Months Tested for Lead and Number Reported to Have Blood Lead Level 10 µg/dl: 1995-2011 Findings Childhood lead exposure further declined, both in the extent and the severity from 2010 to 2011 (Figures One & Two). N umber of Chidlren Tested 140,000 120,000 100,000 80,000 60,000 40,000 20,000 0 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Children Tested Children with BLL >= 10 12,000 10,000 8,000 6,000 4,000 2,000 0 Numbe r of children with BLL >=10 µg/dl * See Appendix D for more detailed chart Figure Two Blood Lead Distribution of Children 0-72 Months Tested for Lead in 2010 and 2011 % of Children with BLL at G ive n Leve l 120 100 80 60 40 20 0 96.5 97.1 2010 2011 3.1 2.5 0.3 0.2 0.1 0.1 0.1 0.1 <=4 5-9 10-1 4 15-19 >=20 6

Table Two provides the breakdown of blood lead testing and the status of children with respect to lead exposure by jurisdiction in 2011. Table Two Blood Lead Testing of Children 0-72 Months by Jurisdiction in 2011 Number of Children with Blood Lead Level 10 µg/dl Population of Children Tested Old Cases 2 New (Incident) Cases 3 Total (Prevalent) Cases 4 County Children 1 Number Percent Number Percent Number Percent Number Percent Allegany 4,766 1,359 28.5 4 0.3 5 0.4 9 0.7 Anne Arundel 47,391 8,162 17.2 1 0.0 7 0.1 8 0.1 Baltimore 66,014 16,375 24.8 7 0.0 19 0.1 26 0.2 Baltimore City 55,681 19,049 34.2 76 0.4 182 1.0 258 1.4 Calvert 7,030 778 11.1 0 0.0 0 0.0 0 0.0 Caroline 3,176 751 23.6 1 0.1 3 0.4 4 0.5 Carroll 12,811 1,287 10.0 3 0.2 11 0.9 14 1.1 Cecil 8,884 1,132 12.7 0 0.0 1 0.1 1 0.1 Charles 13,015 1,904 14.6 0 0.0 1 0.1 1 0.1 Dorchester 2,747 681 24.8 1 0.1 0 0.0 1 0.1 Frederick 20,597 3,241 15.7 5 0.2 7 0.2 12 0.4 Garrett 2,185 438 20.0 0 0.0 3 0.7 3 0.7 Harford 20,720 2,970 14.3 0 0.0 5 0.2 5 0.2 Howard 24,261 2,558 10.5 1 0.0 6 0.2 7 0.3 Kent 1,380 266 19.3 0 0.0 1 0.4 1 0.4 Montgomery 87,595 19,843 22.7 4 0.0 32 0.2 36 0.2 Prince George's 79,810 19,672 24.6 2 0.0 37 0.2 39 0.2 Queen Anne's 3,798 475 12.5 0 0.0 2 0.4 2 0.4 Saint Mary's 10,427 1,602 15.4 0 0.0 0 0.0 0 0.0 Somerset 1,742 549 31.5 1 0.2 1 0.2 2 0.4 Talbot 2,600 655 25.2 1 0.2 3 0.5 4 0.6 Washington 12,462 2,691 21.6 2 0.1 10 0.4 12 0.4 Wicomico 8,427 2,215 26.3 1 0.0 4 0.2 5 0.2 Worcester 3,182 877 27.6 0 0.0 2 0.2 2 0.2 County Unknown 4 0 0 0 Total 500,702 109,534 21.9 110 0.1 342 0.3 452 0.4 1. Adapted from Maryland census population 2010, provided by the Maryland Data Center, Maryland Department of Planning, www.planning.maryland.gov/msdc. 2. Children with a history of an EBL (blood lead level 10 µg/dl). These children may have carried over from 2010 or had an EBL test in previous years. 3. Children with the very first EBL in 2011. These children were either not tested in the past or their blood lead levels were below 10 µg/dl. This definition may not necessarily match the criteria for the initiation of case management. 4. All children with at least one blood lead test 10 µg/dl in 2011. The selection is based on the highest venous or the highest capillary in the absence of any venous test. 5. Of the 342 New Cases, 292 met the criteria for medical and environmental case management. Appendix A provides breakdown of blood lead testing and the status of children by age groups of 0-35 and 36-72 months, and by jurisdiction. Appendix B provides summary results for the past eight (8) years at the State, Baltimore City and Counties levels. For detailed breakdown of blood lead data the reader is referred to supplementary data tables: Supplements 1-5. 7

Statewide activities to reduce (eliminate) childhood lead poisoning The State Elimination Plan calls for zero new cases of EBL. The plan focuses on primary prevention (removal and elimination of lead hazards prior to child access) while maintaining well-established secondary prevention (identifying children who may be at risk of lead exposure) and tertiary prevention (case management of children exposed to lead) efforts in the state. Primary Prevention: Much of the decline in blood lead levels is the result of implementation and enforcement of Maryland s Reduction of Lead Risk in Housing Act (Act). The Act requires owners of pre-1950 rental dwelling units (Affected Properties) to reduce the potential for child exposure to lead paint hazards by performing specific lead risk reduction treatments prior to each change in tenancy. The State Elimination Plan 2010 called for zero new cases of EBL. Though the percentage of children with elevated blood lead levels is consistently lowering in Maryland, there still remains new case incidence. There also continues to be reduction in children indentified with blood lead levels in compliant Affected Properties that have meet the required risk reduction standard required at change in tenancy. Figure Three Percent of Children 0-72 Months with Blood Lead Level 10 µg/dl in 2011 and Age of the Housing Baltimore City CY 2011 Property Status 70% 60% 50% 63% (82) 40% 30% 20% 32% (42) 10% 0% 5% (6) Pre-1950 Rental Post-1949 Rental Owner Occupied Total Baltimore City Cases 130 County CY 2011 Property Status 45% 40% 35% 30% 25% 41 % (66) 38% (62) 20% 15% 21% (34) 10% 5% 0% Pre-1950 Rental Post-1949 Rental Owner Occupied Total County Cases 162 8

State laws and regulations with impact on childhood lead poisoning Requirements to perform lead hazard reduction at each turnover in rental housing built before 1950. [Environment Article (EA) 6-8] Outreach programs to parents, health care providers, and property owners, especially in at-risk areas. [EA 6-8, Health Article 18-106] The Department, health departments or other local jurisdictions effective June 1, 2012 have the authority to order abatements in response to an investigation report of a lead poisoned person at risk. Secondary Prevention: The second element of the Elimination Plan is to identify children who may be at risk of lead exposure. In particular, children ages one and two years are more likely to be exposed to lead because of their hand to mouth behavior. Maryland requires that children at ages one and two years who are enrolled in the Medicaid, Early Periodic Screening, Diagnosis, and Treatment (EPSDT) Program or who currently live or have ever lived in one of Maryland's "at-risk" zip codes identified by the Targeting Plan should be tested. The percentage of one and two year old children tested for lead has increased substantially since 2004 (Figure Four). Figure Four Furthermore, children living in at-risk areas, areas with high proportion of pre 1950 housing Percent of Children One and Two Years Old Tested for Lead vs. Children of Other Ages Percent 50 45 40 35 30 25 20 15 10 5 0 One Year Two Years 3-5 Years 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Calendar Year units are more likely to be exposed to lead than children living in other areas. State has a targeted plan that identifies At-Risk areas. Universal blood lead testing applies to Baltimore City children (City Ordinance 20 effective July 2000). Table Three presents blood lead testing in the At-risk and Not At-risk areas of the state. At-risk area includes Baltimore City, Allegany, Caroline, Dorchester, Frederick, Garrett, Somerset, Washington, Wicomico, and Worcester counties. 9

Table Three Blood Lead Testing in At-Risk and Not At-Risk areas in 2011 Children with Status of Cases of EBL Children Tested BLL 10 µg/dl Old Cases New Cases Area Population Number Percent Number Percent Number Percent Number Percent At-Risk 114,966 31,855 27.7 308 1.0 91 0.3 217 0.7 Not At-Risk 385,736 77,679 20.1 144 0.2 19 0.0 125 0.2 Statewide 500,702 109,534 21.9 452 0.4 110 0.1 342 0.3 Another at risk population for lead poisoning is children enrolled in Maryland s Medical Assistance Program. MDE provides childhood blood lead data to the Maryland Department of Health and Mental Hygiene, Office of Medicaid Administration (DHMH), on a quarterly and annual basis to be matched with a list of children enlisted in the states Medical Assistance Program. Based on data provided, DHMH prepares and distributes an annual report of blood lead testing of children under Maryland s Medicaid Program. Identifying Children with Lead Exposure The main goal in preventing childhood lead poisoning is to limit exposure. However, early detection is crucial when a child is identified with an elevated blood lead level. Because there are no specific clinical symptoms, a blood lead test is the most reliable technique to identify children with elevated blood lead levels. Tertiary Prevention: Maryland s Lead Poisoning Prevention Program has well-established case management guidelines and environmental investigation protocols for follow-up of children with elevated blood lead level. A venous blood lead test 10 µg/dl initiates case management and an environmental investigation. Currently, one venous or two capillary blood lead tests 10 µg/dl triggers the Notice of Elevated Blood Lead Level (Notice of EBL) to be sent to the owner of a Pre-1950 residential dwelling unit (Affected Property). Under the Reduction of Lead Risk in Housing Act (Act), an owner who receives a Notice of Elevated Blood Lead Level is required to perform specific lead risk reduction treatments to limit further exposure to a child. Furthermore, effective June 1, 2012 the Department, health departments or other local jurisdictions have the authority to order abatements in response to an investigation report of a lead poisoned person at risk. Tables Four and Five outline the State s protocol for diagnostic and follow up blood lead testing. 10

Table Four Blood Lead Diagnostic and Follow-Up: Confirmation of a Capillary Blood Lead Test BLL (µg/dl) 9 10 19 3 months Confirm with venous blood lead test within Routine blood lead test according to protocol 20 44 1 week to 1 month* 45 59 48 hours 60-69 24 hours 70 Immediately as an emergency lab test * The higher the BLL on the screening test, the more urgent the need for confirmatory testing. * The higher the BLL, the more urgent the need for confirmatory testing. Table Five Blood Lead Diagnostic and Follow-Up: Follow-Up for Venous Blood Lead Testing1 BLL (µg/dl)venous 9 Early follow-up(first 2-4 Late follow-up (After BLL begins tests after identification) to decline) Routine blood lead test according to protocol 10-14 3 months 2 6 9 months 15-19 1-3 months 2 3 6 months 20-24 1-3 months 2 1 3 months 25-44 2 weeks 1 month 1 month 45 As soon as possible Chelation with subsequent follow-up 1. Seasonal variation of BLLs exists and may be more apparent in colder climate areas. Greater exposure in the summer months may necessitate more frequent follow-up. 2. Some case managers or health care providers may choose to repeat blood lead tests on all new patients within a month to ensure that their BLL level is not rising more quickly than anticipated. Tables adapted from: Centers for Disease Control and Prevention. Managing Elevated Blood Lead Levels Among Children: Recommendations from the Advisory Committee on Childhood Lead Poisoning Prevention. Atlanta: CDC, 2002. 11

Educational Burden of Childhood Lead Exposure Childhood lead exposure at early ages (before 3 years of age) may adversely affect children s neurobehavioral development and as such their later educational achievements. The effect may not show up until the child enters school (kindergarten). Table Six presents the extent of history of EBL among children who were tested for lead and would be at kindergarten age on September 1, 2012. Table Six Blood Lead Testing, and Childhood Lead Exposure of Kindergarten Population Children who would be 5 to 6 years old (kindergarten age) on September 1, 2012 and were tested for lead and had BLL >=10 µg/dl Children Children with EBL Tested Number Percent Allegany 741 7 0.9 Anne Arundel 4,989 6 0.1 Baltimore 12,608 33 0.3 Baltimore City 15,365 143 0.9 Calvert 585 0.0 Caroline 517 2 0.4 Carroll 986 8 0.8 Cecil 923 3 0.3 Charles 1,373 0.0 Dorchester 454 3 0.7 Frederick 2,488 12 0.5 Garrett 318 1 0.3 Harford 2,147 3 0.1 Howard 1,633 1 0.1 Kent 198 1 0.5 Montgomery 11,918 30 0.3 Prince George's 12,278 31 0.3 Queen Anne's 378 2 0.5 Saint Mary's 1,121 1 0.1 Somerset 297 0.0 Talbot 368 4 1.1 Washington 1,780 10 0.6 Wicomico 1,491 4 0.3 Worcester 530 3 0.6 County Unknown 65 1 1.5 Statewide 75,551 309 0.4 12

Data Quality The CLR is maintained in the Systematic Tracking of Elevated Lead Levels and Remediation (STELLAR) surveillance system, obtained from CDC Lead Poisoning Prevention Program. CLR staff makes all efforts to further improve data quality with respect to completeness, timeliness, and accuracy. Staff keep daily track of laboratory reporting to make sure laboratories are reporting all blood lead tests no later than biweekly. The law requires blood lead results 20 µg/dl to be reported (fax) within 24 hours after result is known. However, upon CLR request, laboratories agreed to report (fax) the result of all blood lead test 10 µg/dl within 24 hours. For all blood lead tests 10 µg/dl, staff checks the completeness of data in particular with respect to child s and guardian s name, address, and telephone number. In 2011, more than 90% of blood lead tests were reported to the registry electronically. The average reporting time, from the time sample is drawn to time the result enters the CLR database is approximately 6 days. The average time for elevated blood lead results ( 10 µg/dl) is approximately 30 hours. Blood Lead Laboratory Reporting Requirement The amended law and regulations * of 2001 and 2002 require that: 1-The following child s demographic data should be included in each blood lead test reported: Date of Birth Sex Race Address Test date Sample type Blood lead level 2-Blood lead results 20 µg/dl to be reported (fax) within 24 hours after result is known. All other results to be reported every two weeks. 3-Reporting format should comply with the format designed and provided by the Registry. 4-Data should be provided electronically. * EA 6-303, Blood lead test reporting (COMAR 26.02.01, Blood lead test reporting) Table Seven Completeness of Data for 2010 ITEM % Completed Child s name 1 100.0 Date of Birth 1 100.0 Sex/Gender 99.5 Race 49.6 Guardian s name 54.0 Sample type 87.7 Blood lead level 100.0 Address (geocoded) 90.0 Telephone Number 2 94.6 1. Reports with missing (wrong) name and/or date of birth are held by the program until they are corrected. 2. Quality control for telephone umber started in 2009. Migration into New System The Maryland Department of the Environment has partnered with the Maryland Department of Health and Mental Hygiene in the implementation of CDC s: Healthy Homes and Lead Poisoning Surveillance System (HHLPSS). Full implementation of the HHLPSS database is expected sometime in December, 2012. 13

Appendix A Blood Lead Testing of Children 0-72 Months by Major Age Group and Jurisdiction in 2011 Children with Blood Lead Level 10 µg/dl Population of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Children Number Percent Number Percent Number Percent Number Percent Allegany County 0-35 Months 2,409 1,131 46.9 3 0.3 4 0.4 7 0.6 36-72 Months 2,356 228 9.7 1 0.4 1 0.4 2 0.9 Total 4,766 1,359 28.5 4 0.3 5 0.4 9 0.7 Anne Arundel County 0-35 Months 24,295 5,879 24.2 1 0.0 6 0.1 7 0.1 36-72 Months 23,096 2,283 9.9 0 0.0 1 0.0 1 0.0 Total 47,391 8,162 17.2 1 0.0 7 0.1 8 0.1 Baltimore County 0-35 Months 33,786 12,583 37.2 2 0.0 17 0.1 19 0.2 36-72 Months 32,228 3,792 11.8 5 0.1 2 0.1 7 0.2 Total 66,014 16,375 24.8 7 0.0 19 0.1 26 0.2 Baltimore City 0-35 Months 29,933 13,586 45.4 41 0.3 150 1.1 191 1.4 36-72 Months 25,749 5,463 21.2 35 0.6 32 0.6 67 1.2 Total 55,681 19,049 34.2 76 0.4 182 1.0 258 1.4 Calvert County 0-35 Months 3,362 613 18.2 0 0.0 0 0.0 0 0.0 36-72 Months 3,668 165 4.5 0 0.0 0 0.0 0 0.0 Total 7,030 778 11.1 0 0.0 0 0.0 0 0.0 Caroline County 0-35 Months 1,571 626 39.8 1 0.2 2 0.3 3 0.5 36-72 Months 1,605 125 7.8 0 0.0 1 0.8 1 0.8 Total 3,176 751 23.6 1 0.1 3 0.4 4 0.5 Carroll County 0-35 Months 5,993 979 16.3 2 0.2 8 0.8 10 1.0 36-72 Months 6,818 308 4.5 1 0.3 3 1.0 4 1.3 Total 12,811 1,287 10.0 3 0.2 11 0.9 14 1.1 Cecil County 0-35 Months 4,497 792 17.6 0 0.0 1 0.1 1 0.1 36-72 Months 4,387 340 7.7 0 0.0 0 0.0 0 0.0 Total 8,884 1,132 12.7 0 0.0 1 0.1 1 0.1 14

Appendix A Blood Lead Testing of Children 0-72 Months by Major Age Group and Jurisdiction in 2011 Children with Blood Lead Level 10 µg/dl Population of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Children Number Percent Number Percent Number Percent Number Percent Charles County 0-35 Months 6,565 1,343 20.5 0 0.0 0 0.0 0 0.0 36-72 Months 6,450 561 8.7 0 0.0 1 0.2 1 0.2 Total 13,015 1,904 14.6 0 0.0 1 0.1 1 0.1 Dorchester County 0-35 Months 1,438 511 35.5 1 0.2 0 0.0 1 0.2 36-72 Months 1,309 170 13.0 0 0.0 0 0.0 0 0.0 Total 2,747 681 24.8 1 0.1 0 0.0 1 0.1 Frederick County 0-35 Months 10,094 2,200 21.8 2 0.1 5 0.2 7 0.3 36-72 Months 10,503 1,041 9.9 3 0.3 2 0.2 5 0.5 Total 20,597 3,241 15.7 5 0.2 7 0.2 12 0.4 Garrett County 0-35 Months 1,054 325 30.8 0 0.0 2 0.6 2 0.6 36-72 Months 1,131 113 10.0 0 0.0 1 0.9 1 0.9 Total 2,185 438 20.0 0 0.0 3 0.7 3 0.7 Harford County 0-35 Months 10,229 2,096 20.5 0 0.0 3 0.1 3 0.1 36-72 Months 10,490 874 8.3 0 0.0 2 0.2 2 0.2 Total 20,720 2,970 14.3 0 0.0 5 0.2 5 0.2 Howard County 0-35 Months 11,860 1,706 14.4 1 0.1 5 0.3 6 0.4 36-72 Months 12,401 852 6.9 0 0.0 1 0.1 1 0.1 Total 24,261 2,558 10.5 1 0.0 6 0.2 7 0.3 Kent County 0-35 Months 694 204 29.4 0 0.0 1 0.5 1 0.5 36-72 Months 686 62 9.0 0 0.0 0 0.0 0 0.0 Total 1,380 266 19.3 0 0.0 1 0.4 1 0.4 Montgomery County 0-35 Months 44,503 13,741 30.9 0 0.0 21 0.2 21 0.2 36-72 Months 43,091 6,102 14.2 4 0.1 11 0.2 15 0.2 Total 87,595 19,843 22.7 4 0.0 32 0.2 36 0.2 15

Appendix A Blood Lead Testing of Children 0-72 Months by Major Age Group and Jurisdiction in 2011 Children with Blood Lead Level 10 µg/dl Population of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Children Number Percent Number Percent Number Percent Number Percent Prince George's County 0-35 Months 41,573 12,588 30.3 1 0.0 25 0.2 26 0.2 36-72 Months 38,238 7,084 18.5 1 0.0 12 0.2 13 0.2 Total 79,810 19,672 24.6 2 0.0 37 0.2 39 0.2 Queen Anne's County 0-35 Months 1,851 366 19.8 0 0.0 2 0.5 2 0.5 36-72 Months 1,947 109 5.6 0 0.0 0 0.0 0 0.0 Total 3,798 475 12.5 0 0.0 2 0.4 2 0.4 Saint Mary's County 0-35 Months 5,195 1,334 25.7 0 0.0 0 0.0 0 0.0 36-72 Months 5,232 268 5.1 0 0.0 0 0.0 0 0.0 Total 10,427 1,602 15.4 0 0.0 0 0.0 0 0.0 Somerset County 0-35 Months 918 416 45.3 1 0.2 1 0.2 2 0.5 36-72 Months 824 133 16.1 0 0.0 0 0.0 0 0.0 Total 1,742 549 31.5 1 0.2 1 0.2 2 0.4 Talbot County 0-35 Months 1,320 555 42.1 1 0.2 3 0.5 4 0.7 36-72 Months 1,281 100 7.8 0 0.0 0 0.0 0 0.0 Total 2,600 655 25.2 1 0.2 3 0.5 4 0.6 Washington County 0-35 Months 6,226 1,798 28.9 2 0.1 8 0.4 10 0.6 36-72 Months 6,236 893 14.3 0 0.0 2 0.2 2 0.2 Total 12,462 2691 21.6 2 0.1 10 0.4 12 0.4 Wicomico County 0-35 Months 4,347 1,705 39.2 0 0.0 3 0.2 3 0.2 36-72 Months 4,081 510 12.5 1 0.2 1 0.2 2 0.4 Total 8,427 2,215 26.3 1 0.0 4 0.2 5 0.2 Worcester County 0-35 Months 1,620 677 41.8 0 0.0 1 0.1 1 0.1 36-72 Months 1,562 200 12.8 0 0.0 1 0.5 1 0.5 Total 3,182 877 27.6 0 0.0 2 0.2 2 0.2 16

Appendix A Blood Lead Testing of Children 0-72 Months by Major Age Group and Jurisdiction in 2011 Children with Blood Lead Level 10 µg/dl Population of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Children Number Percent Number Percent Number Percent Number Percent County Unknown 0-35 Months 2 0 0 0 36-72 Months 2 0 0 0 Total 4 0 0 0 Statewide 0-35 Months 255,333 77,756 30.5 59 0.1 268 0.3 327 0.4 36-72 Months 245,369 31,778 13.0 51 0.2 74 0.2 125 0.4 Total 500,702 109,534 21.9 110 0.1 342 0.3 452 0.4 17

Appendix B Blood Lead Testing of Children 0-72 Months: 2004-2011 Calendar Blood Lead Tests. BLL 10 µg/dl Lead Poisoning. Year Population Number Percent Number Percent Number Percent 2004 Baltimore City 52,796 18,970 35.9 1183 6.2 147 0.8 Counties 395,310 83,002 21.0 573 0.7 83 0.1 County Unknown 3,577 55 Statewide 448,106 105,549 23.6 1,811 1.7 230 0.2 2005 Prevalent cases Incident cases Baltimore City 53,626 17,943 33.5 854 4.8 534 3.0 Counties 401,888 80,848 20.1 463 0.6 382 0.5 County Unknown 357 14 0 Statewide 455,514 99,148 21.8 1,331 1.3 916 0.9 2006 2007 2008 2009 2010 2011 Baltimore City 54,547 18,363 33.7 843 4.6 573 3.1 Counties 408,784 84,611 20.7 431 0.5 363 0.4 County Unknown 199 21 20 Statewide 463,331 102,974 22.2 1,274 1.2 936 0.9 Baltimore City 55,142 17,670 32.0 624 3.5 435 2.5 Counties 413,248 87,760 21.2 267 0.3 218 0.2 County Unknown 278 1 1 Statewide 468,390 105,708 22.6 892 0.8 654 0.6 Baltimore City 55,959 18,622 33.3 468 2.5 302 1.6 Counties 418,941 87,830 21.0 245 0.3 187 0.2 County Unknown 69 0 0 Statewide 474,900 106,452 22.4 713 0.7 489 0.5 Baltimore City 56,431 19,043 33.7 347 1.8 214 1.1 Counties 422,488 88,368 20.9 206 0.2 165 0.1 County Unknown 5 Statewide 468,390 107,416 22.4 553 0.5 379 0.4 Baltimore City 57,937 19,702 34.0 314 1.6 229 1.2 Counties 433,661 94,650 21.8 217 0.2 170 0.2 County Unknown 477 0 0 0.0 Statewide 491,598 114,829 23.4 531 0.5 399 0.3 Baltimore City 55,681 19,049 34.2 258 1.4 182 1.0 Counties 445,021 90,481 20.3 194 0.2 160 0.2 County Unknown 4 0 0 Statewide 500,702 109,534 21.9 452 0.4 342 0.4 18

Appendix C Children with the First Blood Lead Level of 5-9 µg/dl in 2011 Children 0-72 Months Tested for Lead and Had the First Blood Lead Level 5-9 µg/dl in 2011 Sample Type County Capillary * Venous Total Allegany 47 14 61 Anne Arundel 30 37 67 Baltimore 129 120 249 Baltimore City 309 641 950 Calvert 6 7 13 Caroline 5 8 13 Carroll 5 20 25 Cecil 12 4 16 Charles 4 10 14 Dorchester 3 6 9 Frederick 8 30 38 Garrett 3 6 9 Harford 13 11 24 Howard 10 7 17 Kent 3 4 7 Montgomery 73 85 158 Prince George's 74 147 221 Queen Anne's 4 1 5 Saint Mary's 17 2 19 Somerset 0 10 10 Talbot 6 6 12 Washington 21 120 141 Wicomico 11 31 42 Worcester 1 7 8 County Unknown 0 1 1 Statewide 794 1,335 2,129 * Sample types unknown were counted as capillary Note: If a child ever tested for lead and had a blood lead level 5 µg/dl before 2011 or a blood lead level 10 µg/dl in 2011 is not included in this table. 19

Appendix D %CHILDREN TESTED, BLOOD LEAD >=10MCG/DL 30 25 20 15 10 5 0 23.9 19.8 18 16.5 11.6 MARYLAND DEPARTMENT OF THE ENVIRONMENT CHILDHOOD BLOOD LEAD SURVEILLANCE STATEWIDE 1993-2011 8.7 6.3 4.6 3.7 2.9 2.2 1.7 1.3 1.2 0.8 0.7 0.5 0.5 0.4 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (14,546 10,377 11,585 9,884 7,763 5,068 3,904 3,402 2,841 2,297 1,719 1,811 1,331 1,274 892 713 553 531 452) (60,912 52,391 64,394 59,746 67,118 58,585 61,529 75,516 76,742 79,507 76,721 105,549 99,148 102,974 105,708 106,452 107,416 114,829 109,534) CALENDAR YEAR (Number of Children with BLL>=10mcg/dl) (Number of Children Tested) %CHILDREN TESTED, BLOOD LEAD >=10MCG/DL 40 35 30 25 20 15 10 5 0 33.9 28.1 26.4 26.4 27.9 MARYLAND DEPARTMENT OF THE ENVIRONMENT CHILDHOOD BLOOD LEAD SURVEILLANCE BALTIMORE CITY 1993-2011 22.2 16.7 12.1 9.5 9.4 6.4 6.2 4.8 4.6 3.5 2.5 1.8 1.6 1.4 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 (12,9089,16810,2587,816 5,983 3,949 2,902 2,189 2,027 1,558 1,166 1,183 854 843 624 468 347 314 258) (38,03032,62038,79429,63021,42317,75317,41418,03321,23116,59518,24218,97017,94318,36317,67018,62219,04319,70219,049) CALENDAR YEAR (Number of Children with BLL>=10mcg/dl) (Number of Children Tested) 20

Lead Poisoning Prevention Program Childhood Blood Lead Surveillance in Maryland 2011 Annual Report Blood Lead Level (increment of 5 µg/dl) by age, and county of residence Supplementary Data Tables: Supplement #1 July, 2012

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Allegany County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5-9 10-14 15-19 20-24 25 Total Under One 20 20 One Year 549 19 1 1 1 571 Two Years 516 20 2 2 540 Three Years 74 4 1 1 80 Four Years 84 5 89 Five Years 56 3 59 Total 1,299 51 4 3 1 1 1,359 6-17 Years 66 7 73 Age Group 4 5-9 10-14 15-19 20-24 25 Total Under One 6 6 One Year 79 6 1 1 1 88 Two Years 72 10 2 2 86 Three Years 27 4 1 1 33 Four Years 27 3 30 Five Years 19 2 21 Total 230 25 4 3 1 1 264 6-17 Years 22 1 23 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 2

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Anne Arundel County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5-9 10-14 15-19 20-24 25 Total Under One 486 4 1 491 One Year 3,377 36 1 2 3,416 Two Years 1,949 20 2 1 1,972 Three Years 846 3 849 Four Years 779 3 1 783 Five Years 642 9 651 Total 8,079 75 5 1 0 2 8,162 6-17 Years 649 6 655 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 287 1 1 289 One Year 2,445 26 1 2 2,474 Two Years 1,475 11 2 1 1,489 Three Years 677 1 678 Four Years 626 1 1 628 Five Years 489 6 495 Total 5,999 46 5 1 0 2 6,053 6-17 Years 495 4 499 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 3

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Baltimore County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 1,675 18 1 1,694 One Year 5,543 95 4 3 1 2 5,648 Two Years 5,134 99 4 4 5,241 Three Years 1,466 34 2 1 1,503 Four Years 1,294 26 3 1,323 Five Years 949 16 1 966 Total 16,061 288 11 11 1 3 16,375 6-17 Years 1,491 33 4 1 1 1,530 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 1,047 8 1 1,056 One Year 3,737 45 4 3 1 2 3,792 Two Years 3,356 55 3 4 3,418 Three Years 1,078 18 2 1 1,099 Four Years 980 17 3 1,000 Five Years 714 10 1 725 Total 10,912 153 10 11 1 3 11,090 6-17 Years 1,178 23 4 1 1 1,207 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 4

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Baltimore City Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 1,459 39 3 3 1,504 One Year 6,076 449 61 20 9 5 6,620 Two Years 4,908 464 50 21 10 9 5,462 Three Years 2,146 224 17 14 3 3 2,407 Four Years 1,687 176 18 2 1 3 1,887 Five Years 1,079 84 6 1,169 Total 17,355 1,436 155 60 23 20 19,049 6-17 Years 2,928 149 6 9 3 2 3,097 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 902 22 3 3 930 One Year 4,210 313 50 20 9 5 4,607 Two Years 3,404 330 44 18 10 8 3,814 Three Years 1,649 177 16 13 3 3 1,861 Four Years 1,324 139 17 2 1 3 1,486 Five Years 816 63 5 884 Total 12,305 1,044 135 56 23 19 13,582 6-17 Years 2,316 116 6 9 3 2 2,452 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 5

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Calvert County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 99 1 100 One Year 336 5 341 Two Years 168 4 172 Three Years 70 3 73 Four Years 45 45 Five Years 46 1 47 Total 764 14 0 0 0 0 778 6-17 Years 51 1 1 1 54 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 21 1 22 One Year 144 2 146 Two Years 87 3 90 Three Years 41 2 43 Four Years 29 29 Five Years 33 33 Total 355 8 0 0 0 0 363 6-17 Years 43 1 1 45 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 6

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Caroline County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 13 13 One Year 325 3 2 330 Two Years 272 10 1 283 Three Years 46 3 1 50 Four Years 46 3 49 Five Years 24 2 26 Total 726 21 4 0 0 0 751 6-17 Years 21 1 1 23 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 11 11 One Year 186 3 2 191 Two Years 167 6 1 174 Three Years 41 2 1 44 Four Years 40 2 42 Five Years 20 2 22 Total 465 15 4 0 0 0 484 6-17 Years 15 1 1 17 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 7

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Carroll County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5-9 10-14 15-19 20-24 25 Total Under One 148 2 150 One Year 515 7 4 3 1 530 Two Years 286 11 1 1 299 Three Years 114 2 116 Four Years 102 3 4 109 Five Years 82 1 83 Total 1,247 26 9 3 1 1 1,287 6-17 Years 104 1 105 Age Group 4 5-9 10-14 15-19 20-24 25 Total Under One 109 1 110 One Year 425 6 4 3 1 439 Two Years 234 10 1 1 246 Three Years 105 2 107 Four Years 92 2 4 98 Five Years 75 1 76 Total 1,040 22 9 3 1 1 1,076 6-17 Years 82 1 83 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 8

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Cecil County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 82 3 85 One Year 472 8 1 481 Two Years 222 4 226 Three Years 116 1 117 Four Years 129 1 130 Five Years 93 93 Total 1,114 17 1 0 0 0 1,132 6-17 Years 121 1 122 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 23 23 One Year 184 2 1 187 Two Years 80 1 81 Three Years 26 1 27 Four Years 45 1 46 Five Years 35 35 Total 393 5 1 0 0 0 399 6-17 Years 45 45 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 9

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Charles County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 199 3 202 One Year 625 4 629 Two Years 506 6 512 Three Years 241 2 243 Four Years 204 204 Five Years 113 1 114 Total 1,888 15 1 0 0 0 1,904 6-17 Years 118 118 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 132 2 134 One Year 540 3 543 Two Years 436 4 440 Three Years 228 2 230 Four Years 197 197 Five Years 105 1 106 Total 1,638 11 1 0 0 0 1,650 6-17 Years 106 106 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 10

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Dorchester County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 10 10 One Year 262 3 1 266 Two Years 230 5 235 Three Years 79 3 82 Four Years 60 60 Five Years 27 1 28 Total 668 12 1 0 0 0 681 6-17 Years 26 2 28 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 2 2 One Year 132 2 1 135 Two Years 129 5 134 Three Years 61 1 62 Four Years 47 47 Five Years 21 1 22 Total 392 9 1 0 0 0 402 6-17 Years 20 2 22 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 11

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Frederick County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 141 2 143 One Year 1,421 22 2 1 1,446 Two Years 600 7 3 1 611 Three Years 342 7 2 3 354 Four Years 392 7 399 Five Years 287 1 288 Total 3,183 46 7 1 0 4 3,241 6-17 Years 145 5 1 151 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 97 2 99 One Year 1,252 19 2 1 1,274 Two Years 488 5 3 1 497 Three Years 286 6 2 3 297 Four Years 328 6 334 Five Years 255 1 256 Total 2,706 39 7 1 0 4 2,757 6-17 Years 119 5 1 125 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 12

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Garrett County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 8 8 One Year 158 7 1 166 Two Years 150 1 151 Three Years 41 2 1 44 Four Years 39 39 Five Years 30 30 Total 426 9 2 0 0 1 438 6-17 Years 13 13 439 9 2 1 451 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 6 6 One Year 61 5 1 67 Two Years 65 1 66 Three Years 25 2 1 28 Four Years 24 24 Five Years 14 14 Total 195 7 2 0 0 1 205 6-17 Years 6 6 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 13

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Harford County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 450 4 454 One Year 855 11 1 2 869 Two Years 766 7 773 Three Years 326 6 1 333 Four Years 288 1 1 290 Five Years 249 2 251 Total 2,934 31 2 0 3 0 2,970 6-17 Years 383 6 1 390 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 295 295 One Year 641 6 1 2 650 Two Years 547 6 553 Three Years 267 4 1 272 Four Years 240 1 1 242 Five Years 213 1 214 Total 2,203 18 2 0 3 0 2,226 6-17 Years 333 5 1 339 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 14

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Howard County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 195 195 One Year 898 10 1 909 Two Years 591 6 1 2 2 602 Three Years 314 2 1 317 Four Years 307 1 308 Five Years 226 1 227 Total 2,531 20 3 2 0 2 2,558 6-17 Years 457 2 459 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 153 153 One Year 732 4 1 737 Two Years 453 4 1 2 2 462 Three Years 249 1 250 Four Years 253 1 254 Five Years 187 1 188 Total 2,027 10 3 2 0 2 2,044 6-17 Years 391 1 392 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 15

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Kent County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5-9 10-14 15-19 20-24 25 Total Under One 17 17 One Year 102 3 1 106 Two Years 78 3 81 Three Years 31 1 32 Four Years 18 18 Five Years 12 12 Total 258 7 1 0 0 0 266 6-17 Years 9 1 10 Age Group 4 5-9 10-14 15-19 20-24 25 Total Under One 8 8 One Year 63 3 1 67 Two Years 35 1 36 Three Years 17 1 18 Four Years 8 8 Five Years 8 8 Total 139 5 1 0 0 0 145 6-17 Years 2 1 3 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 16

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Montgomery County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 3,670 21 3 2 3,696 One Year 5,005 44 8 3 1 5,061 Two Years 4,942 38 1 3 4,984 Three Years 2,012 17 5 1 2,035 Four Years 2,444 21 2 2 3 1 2,473 Five Years 1,572 21 1 1,594 Total 19,645 162 19 5 5 7 19,843 6-17 Years 1,842 29 2 1 1,874 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 1,706 7 3 2 1,718 One Year 3,738 27 8 3 3,776 Two Years 3,153 22 1 3 3,179 Three Years 1,629 12 5 1 1,647 Four Years 2,068 17 2 2 3 1 2,093 Five Years 1,356 13 1 1,370 Total 13,650 98 19 5 5 6 13,783 6-17 Years 1,601 25 2 1 1,629 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 17

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Prince George s County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 1,868 16 1 2 1 1,888 One Year 5,864 77 7 2 1 5,951 Two Years 4,669 68 8 1 3 4,749 Three Years 2,379 36 3 2,418 Four Years 2,736 30 4 1 2,771 Five Years 1,867 23 4 1 1,895 Total 19,383 250 27 5 3 4 19,672 6-17 Years 2,814 24 5 3 2,846 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 1,242 4 1 2 1 1,250 One Year 4,818 56 7 2 1 4,884 Two Years 3,945 49 7 1 3 4,005 Three Years 2,100 30 3 2,133 Four Years 2,485 21 4 1 2,511 Five Years 1,687 13 4 1 1,705 Total 16,277 173 26 5 3 4 16,488 6-17 Years 2,533 18 5 3 2,559 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 18

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Queen Anne s County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 13 1 14 One Year 208 3 211 Two Years 137 2 2 141 Three Years 40 1 41 Four Years 50 50 Five Years 18 18 Total 466 7 2 0 0 0 475 6-17 Years 19 2 1 22 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 6 6 One Year 136 1 137 Two Years 78 1 2 81 Three Years 27 1 28 Four Years 34 34 Five Years 14 14 Total 295 3 2 0 0 0 300 6-17 Years 14 2 1 17 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 19

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Saint Mary s County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 232 3 235 One Year 624 7 631 Two Years 460 8 468 Three Years 118 1 119 Four Years 101 101 Five Years 47 1 48 Total 1,582 20 0 0 0 0 1,602 6-17 Years 100 100 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 16 16 One Year 95 1 96 Two Years 90 1 91 Three Years 38 38 Four Years 34 34 Five Years 19 19 Total 292 2 0 0 0 0 294 6-17 Years 62 62 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 20

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Somerset County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 29 29 One Year 194 4 1 1 200 Two Years 182 5 187 Three Years 62 62 Four Years 41 1 42 Five Years 29 29 Total 537 10 1 0 1 0 549 6-17 Years 90 1 91 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 23 23 One Year 175 4 1 1 181 Two Years 162 5 167 Three Years 53 53 Four Years 31 1 32 Five Years 25 25 Total 469 10 1 0 1 0 481 6-17 Years 86 1 0 0 0 0 87 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 21

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Talbot County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 13 13 One Year 273 5 1 279 Two Years 253 7 3 263 Three Years 48 2 50 Four Years 35 35 Five Years 15 15 Total 637 14 3 0 1 0 655 6-17 Years 21 21 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 11 11 One Year 132 4 1 137 Two Years 104 3 3 110 Three Years 37 2 39 Four Years 30 30 Five Years 11 11 Total 325 9 3 0 1 0 338 6-17 Years 16 16 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 22

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Washington County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 68 1 69 One Year 934 59 2 1 2 998 Two Years 682 44 2 2 1 731 Three Years 260 13 1 274 Four Years 340 20 1 361 Five Years 241 17 258 Total 2,525 154 5 4 2 1 2,691 6-17 Years 104 7 1 112 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 53 53 One Year 693 45 2 1 2 743 Two Years 494 38 2 2 1 537 Three Years 250 13 1 264 Four Years 331 20 1 352 Five Years 233 17 250 Total 2,054 133 5 4 2 1 2,199 6-17 Years 102 7 1 110 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 23

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Wicomico County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 73 1 74 One Year 857 18 2 877 Two Years 737 16 1 754 Three Years 236 3 239 Four Years 179 6 185 Five Years 82 2 2 86 Total 2,164 46 4 0 1 0 2,215 6-17 Years 184 3 2 189 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 47 47 One Year 720 14 2 736 Two Years 590 12 1 603 Three Years 219 2 221 Four Years 152 5 157 Five Years 78 2 2 82 Total 1,806 35 4 0 1 0 1,846 6-17 Years 167 2 2 171 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 24

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Worcester County Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 24 24 One Year 314 1 1 316 Two Years 332 5 337 Three Years 93 2 1 96 Four Years 69 69 Five Years 34 1 35 Total 866 9 0 0 1 1 877 6-17 Years 69 1 70 Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One 22 22 One Year 260 1 1 262 Two Years 279 4 283 Three Years 77 2 1 80 Four Years 59 59 Five Years 28 1 29 Total 725 8 0 0 1 1 735 6-17 Years 58 1 59 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 25

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence County Unknown Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One One Year 2 2 Two Years Three Years Four Years 2 2 Five Years Total 4 0 0 0 0 0 4 6-17 Years Age Group 4 5 9 10 14 15 19 20 24 25 Total Under One One Year Two Years Three Years Four Years 1 1 Five Years Total 1 1 6-17 Years 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 26

Blood Lead Test of Children 0-72 Months in increment of 5 µg/dl by Age and County of Residence Statewide Criteria: The highest venous or highest capillary in the absence of venous test Age Group 4 5-9 10-14 15-19 20-24 25 Total Under One 10,992 119 8 6 3 11,128 One Year 35,789 900 100 34 16 15 36,854 Two Years 28,770 859 81 33 12 19 29,774 Three Years 11,500 372 35 14 5 8 11,934 Four Years 11,471 304 29 8 6 4 11,822 Five Years 7,820 186 14 1 1 8,022 Total 106,342 2,740 267 95 43 47 109,534 6-17 Years 11,825 280 23 13 8 4 12,153 Age Group 4 5-9 10-14 15-19 20-24 25 Total Under One 6,225 48 8 6 3 6,290 One Year 25,598 598 89 34 16 14 26,349 Two Years 19,923 586 73 30 12 18 20,642 Three Years 9,207 285 34 13 5 8 9,552 Four Years 9,485 237 28 8 6 4 9,768 Five Years 6,455 134 13 1 1 6,604 Total 76,893 1,888 245 91 43 45 79,205 6-17 Years 9,812 214 23 13 8 4 10,074 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 27

Lead Poisoning Prevention Program Childhood Blood Lead Surveillance in Maryland 2011 Annual Report Number and percentage of children with Blood Lead Level 5, 10, 15, 20, and 25 µg/dl By age, and county of residence Supplementary Data Tables: Supplement #2 July, 2012

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Allegany County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 20 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 571 22 3.9 3 0.5 2 0.4 1 0.2 1 0.2 Two Years 540 24 4.4 4 0.7 2 0.4 0 0.0 0 0.0 Three Years 80 6 7.5 2 2.5 1 1.3 1 1.3 0 0.0 Four Years 89 5 5.6 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 59 3 5.1 0 0.0 0 0.0 0 0.0 0 0.0 Total 1,359 60 4.4 9 0.7 5 0.4 2 0.1 1 0.1 6-17 Years 73 7 9.6 0 0.0 0 0.0 0 0.0 0 0.0 Under One 6 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 88 9 10.2 3 3.4 2 2.3 1 1.1 1 1.1 Two Years 86 14 16.3 4 4.7 2 2.3 0 0.0 0 0.0 Three Years 33 6 18.2 2 6.1 1 3.0 1 3.0 0 0.0 Four Years 30 3 10.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 21 2 9.5 0 0.0 0 0.0 0 0.0 0 0.0 Total 264 34 12.9 9 3.4 5 1.9 2 0.8 1 0.4 6-17 Years 23 1 4.3 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 2

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Anne Arundel County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 491 5 1.0 1 0.2 0 0.0 0 0.0 0 0.0 One Year 3,416 39 1.1 3 0.1 2 0.1 2 0.1 2 0.1 Two Years 1,972 23 1.2 3 0.2 1 0.1 0 0.0 0 0.0 Three Years 849 3 0.4 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 783 4 0.5 1 0.1 0 0.0 0 0.0 0 0.0 Five Years 651 9 1.4 0 0.0 0 0.0 0 0.0 0 0.0 Total 8,162 83 1.0 8 0.1 3 0.0 2 0.0 2 0.0 6-17 Years 655 6 0.9 0 0.0 0 0.0 0 0.0 0 0.0 Under One 289 2 0.7 1 0.3 0 0.0 0 0.0 0 0.0 One Year 2,474 29 1.2 3 0.1 2 0.1 2 0.1 2 0.1 Two Years 1,489 14 0.9 3 0.2 1 0.1 0 0.0 0 0.0 Three Years 678 1 0.1 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 628 2 0.3 1 0.2 0 0.0 0 0.0 0 0.0 Five Years 495 6 1.2 0 0.0 0 0.0 0 0.0 0 0.0 Total 6,053 54 0.9 8 0.1 3 0.0 2 0.0 2 0.0 6-17 Years 499 4 0.8 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 3

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Baltimore County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 1,694 19 1.1 1 0.1 1 0.1 0 0.0 0 0.0 One Year 5,648 105 1.9 10 0.2 6 0.1 3 0.1 2 0.0 Two Years 5,241 107 2.0 8 0.2 4 0.1 0 0.0 0 0.0 Three Years 1,503 37 2.5 3 0.2 1 0.1 1 0.1 1 0.1 Four Years 1,323 29 2.2 3 0.2 3 0.2 0 0.0 0 0.0 Five Years 966 17 1.8 1 0.1 0 0.0 0 0.0 0 0.0 Total 16,375 314 1.9 26 0.2 15 0.1 4 0.0 3 0.0 6-17 Years 1,530 39 2.5 6 0.4 2 0.1 1 0.1 1 0.1 Under One 1,056 9 0.9 1 0.1 1 0.1 0 0.0 0 0.0 One Year 3,792 55 1.5 10 0.3 6 0.2 3 0.1 2 0.1 Two Years 3,418 62 1.8 7 0.2 4 0.1 0 0.0 0 0.0 Three Years 1,099 21 1.9 3 0.3 1 0.1 1 0.1 1 0.1 Four Years 1,000 20 2.0 3 0.3 3 0.3 0 0.0 0 0.0 Five Years 725 11 1.5 1 0.1 0 0.0 0 0.0 0 0.0 Total 11,090 178 1.6 25 0.2 15 0.1 4 0.0 3 0.0 6-17 Years 1,207 29 2.4 6 0.5 2 0.2 1 0.1 1 0.1 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 4

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Baltimore City Criteria: The highest venous or the highest capillary in the absence of venous test Under One 1,504 45 3.0 6 0.4 3 0.2 0 0.0 0 0.0 One Year 6,620 544 8.2 95 1.4 34 0.5 14 0.2 5 0.1 Two Years 5,462 554 10.1 90 1.6 40 0.7 19 0.3 9 0.2 Three Years 2,407 261 10.8 37 1.5 20 0.8 6 0.2 3 0.1 Four Years 1,887 200 10.6 24 1.3 6 0.3 4 0.2 3 0.2 Five Years 1,169 90 7.7 6 0.5 0 0.0 0 0.0 0 0.0 Total 19,049 1,694 8.9 258 1.4 103 0.5 43 0.2 20 0.1 6-17 Years 3,097 169 5.5 20 0.6 14 0.5 5 0.2 2 0.1 Under One 930 28 3.0 6 0.6 3 0.3 0 0.0 0 0.0 One Year 4,607 397 8.6 84 1.8 34 0.7 14 0.3 5 0.1 Two Years 3,814 410 10.7 80 2.1 36 0.9 18 0.5 8 0.2 Three Years 1,861 212 11.4 35 1.9 19 1.0 6 0.3 3 0.2 Four Years 1,486 162 10.9 23 1.5 6 0.4 4 0.3 3 0.2 Five Years 884 68 7.7 5 0.6 0 0.0 0 0.0 0 0.0 Total 13,582 1,277 9.4 233 1.7 98 0.7 42 0.3 19 0.1 6-17 Years 2,452 136 5.5 20 0.8 14 0.6 5 0.2 2 0.1 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 5

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Calvert County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 100 1 1.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 341 5 1.5 0 0.0 0 0.0 0 0.0 0 0.0 Two Years 172 4 2.3 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 73 3 4.1 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 45 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 47 1 2.1 0 0.0 0 0.0 0 0.0 0 0.0 Total 778 14 1.8 0 0.0 0 0.0 0 0.0 0 0.0 6-17 Years 54 3 5.6 2 3.7 1 1.9 1 1.9 0 0.0 Under One 22 1 4.5 0 0.0 0 0.0 0 0.0 0 0.0 One Year 146 2 1.4 0 0.0 0 0.0 0 0.0 0 0.0 Two Years 90 3 3.3 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 43 2 4.7 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 29 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 33 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 363 8 2.2 0 0.0 0 0.0 0 0.0 0 0.0 6-17 Years 45 2 4.4 2 4.4 1 2.2 1 2.2 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 6

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Caroline County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 13 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 330 5 1.5 2 0.6 0 0.0 0 0.0 0 0.0 Two Years 283 11 3.9 1 0.4 0 0.0 0 0.0 0 0.0 Three Years 50 4 8.0 1 2.0 0 0.0 0 0.0 0 0.0 Four Years 49 3 6.1 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 26 2 7.7 0 0.0 0 0.0 0 0.0 0 0.0 Total 751 25 3.3 4 0.5 0 0.0 0 0.0 0 0.0 6-17 Years 23 2 8.7 1 4.3 1 4.3 1 4.3 1 4.3 Under One 11 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 191 5 2.6 2 1.0 0 0.0 0 0.0 0 0.0 Two Years 174 7 4.0 1 0.6 0 0.0 0 0.0 0 0.0 Three Years 44 3 6.8 1 2.3 0 0.0 0 0.0 0 0.0 Four Years 42 2 4.8 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 22 2 9.1 0 0.0 0 0.0 0 0.0 0 0.0 Total 484 19 3.9 4 0.8 0 0.0 0 0.0 0 0.0 6-17 Years 17 2 11.8 1 5.9 1 5.9 1 5.9 1 5.9 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 7

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Carroll County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 150 2 1.3 0 0.0 0 0.0 0 0.0 0 0.0 One Year 530 15 2.8 8 1.5 4 0.8 1 0.2 1 0.2 Two Years 299 13 4.3 2 0.7 1 0.3 1 0.3 0 0.0 Three Years 116 2 1.7 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 109 7 6.4 4 3.7 0 0.0 0 0.0 0 0.0 Five Years 83 1 1.2 0 0.0 0 0.0 0 0.0 0 0.0 Total 1,287 40 3.1 14 1.1 5 0.4 2 0.2 1 0.1 6-17 Years 105 1 1.0 1 1.0 1 1.0 0 0.0 0 0.0 Under One 110 1 0.9 0 0.0 0 0.0 0 0.0 0 0.0 One Year 439 14 3.2 8 1.8 4 0.9 1 0.2 1 0.2 Two Years 246 12 4.9 2 0.8 1 0.4 1 0.4 0 0.0 Three Years 107 2 1.9 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 98 6 6.1 4 4.1 0 0.0 0 0.0 0 0.0 Five Years 76 1 1.3 0 0.0 0 0.0 0 0.0 0 0.0 Total 1,076 36 3.3 14 1.3 5 0.5 2 0.2 1 0.1 6-17 Years 83 1 1.2 1 1.2 1 1.2 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 8

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Cecil County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 85 3 3.5 0 0.0 0 0.0 0 0.0 0 0.0 One Year 481 9 1.9 1 0.2 0 0.0 0 0.0 0 0.0 Two Years 226 4 1.8 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 117 1 0.9 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 130 1 0.8 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 93 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 1,132 18 1.6 1 0.1 0 0.0 0 0.0 0 0.0 6-17 Years 122 1 0.8 0 0.0 0 0.0 0 0.0 0 0.0 Under One 23 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 187 3 1.6 1 0.5 0 0.0 0 0.0 0 0.0 Two Years 81 1 1.2 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 27 1 3.7 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 46 1 2.2 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 35 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 399 6 1.5 1 0.3 0 0.0 0 0.0 0 0.0 6-17 Years 45 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 9

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Charles County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 202 3 1.5 0 0.0 0 0.0 0 0.0 0 0.0 One Year 629 4 0.6 0 0.0 0 0.0 0 0.0 0 0.0 Two Years 512 6 1.2 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 243 2 0.8 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 204 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 114 1 0.9 1 0.9 0 0.0 0 0.0 0 0.0 Total 1,904 16 0.8 1 0.1 0 0.0 0 0.0 0 0.0 6-17 Years 118 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Under One 134 2 1.5 0 0.0 0 0.0 0 0.0 0 0.0 One Year 543 3 0.6 0 0.0 0 0.0 0 0.0 0 0.0 Two Years 440 4 0.9 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 230 2 0.9 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 197 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 106 1 0.9 1 0.9 0 0.0 0 0.0 0 0.0 Total 1,650 12 0.7 1 0.1 0 0.0 0 0.0 0 0.0 6-17 Years 106 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 10

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Dorchester County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 10 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 266 4 1.5 1 0.4 0 0.0 0 0.0 0 0.0 Two Years 235 5 2.1 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 82 3 3.7 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 60 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 28 1 3.6 0 0.0 0 0.0 0 0.0 0 0.0 Total 681 13 1.9 1 0.1 0 0.0 0 0.0 0 0.0 6-17 Years 28 2 7.1 0 0.0 0 0.0 0 0.0 0 0.0 Under One 2 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 135 3 2.2 1 0.7 0 0.0 0 0.0 0 0.0 Two Years 134 5 3.7 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 62 1 1.6 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 47 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 22 1 4.5 0 0.0 0 0.0 0 0.0 0 0.0 Total 402 10 2.5 1 0.2 0 0.0 0 0.0 0 0.0 6-17 Years 22 2 9.1 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 11

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Frederick County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 143 2 1.4 0 0.0 0 0.0 0 0.0 0 0.0 One Year 1,446 25 1.7 3 0.2 1 0.1 0 0.0 0 0.0 Two Years 611 11 1.8 4 0.7 1 0.2 1 0.2 1 0.2 Three Years 354 12 3.4 5 1.4 3 0.8 3 0.8 3 0.8 Four Years 399 7 1.8 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 288 1 0.3 0 0.0 0 0.0 0 0.0 0 0.0 Total 3,241 58 1.8 12 0.4 5 0.2 4 0.1 4 0.1 6-17 Years 151 6 4.0 1 0.7 1 0.7 0 0.0 0 0.0 Under One 99 2 2.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 1,274 22 1.7 3 0.2 1 0.1 0 0.0 0 0.0 Two Years 497 9 1.8 4 0.8 1 0.2 1 0.2 1 0.2 Three Years 297 11 3.7 5 1.7 3 1.0 3 1.0 3 1.0 Four Years 334 6 1.8 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 256 1 0.4 0 0.0 0 0.0 0 0.0 0 0.0 Total 2,757 51 1.8 12 0.4 5 0.2 4 0.1 4 0.1 6-17 Years 125 6 4.8 1 0.8 1 0.8 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 12

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Garrett County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 8 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 166 8 4.8 1 0.6 1 0.6 1 0.6 1 0.6 Two Years 151 1 0.7 1 0.7 0 0.0 0 0.0 0 0.0 Three Years 44 3 6.8 1 2.3 0 0.0 0 0.0 0 0.0 Four Years 39 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 30 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 438 12 2.7 3 0.7 1 0.2 1 0.2 1 0.2 6-17 Years 13 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Under One 6 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 67 6 9.0 1 1.5 1 1.5 1 1.5 1 1.5 Two Years 66 1 1.5 1 1.5 0 0.0 0 0.0 0 0.0 Three Years 28 3 10.7 1 3.6 0 0.0 0 0.0 0 0.0 Four Years 24 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 14 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 205 10 4.9 3 1.5 1 0.5 1 0.5 1 0.5 6-17 Years 6 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 13

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Harford County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 454 4 0.9 0 0.0 0 0.0 0 0.0 0 0.0 One Year 869 14 1.6 3 0.3 2 0.2 2 0.2 0 0.0 Two Years 773 7 0.9 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 333 7 2.1 1 0.3 0 0.0 0 0.0 0 0.0 Four Years 290 2 0.7 1 0.3 1 0.3 1 0.3 0 0.0 Five Years 251 2 0.8 0 0.0 0 0.0 0 0.0 0 0.0 Total 2,970 36 1.2 5 0.2 3 0.1 3 0.1 0 0.0 6-17 Years 390 7 1.8 1 0.3 0 0.0 0 0.0 0 0.0 Under One 295 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 650 9 1.4 3 0.5 2 0.3 2 0.3 0 0.0 Two Years 553 6 1.1 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 272 5 1.8 1 0.4 0 0.0 0 0.0 0 0.0 Four Years 242 2 0.8 1 0.4 1 0.4 1 0.4 0 0.0 Five Years 214 1 0.5 0 0.0 0 0.0 0 0.0 0 0.0 Total 2,226 23 1.0 5 0.2 3 0.1 3 0.1 0 0.0 6-17 Years 339 6 1.8 1 0.3 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 14

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Howard County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 195 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 909 11 1.2 1 0.1 0 0.0 0 0.0 0 0.0 Two Years 602 11 1.8 5 0.8 4 0.7 2 0.3 2 0.3 Three Years 317 3 0.9 1 0.3 0 0.0 0 0.0 0 0.0 Four Years 308 1 0.3 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 227 1 0.4 0 0.0 0 0.0 0 0.0 0 0.0 Total 2,558 27 1.1 7 0.3 4 0.2 2 0.1 2 0.1 6-17 Years 459 2 0.4 0 0.0 0 0.0 0 0.0 0 0.0 Under One 153 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 737 5 0.7 1 0.1 0 0.0 0 0.0 0 0.0 Two Years 462 9 1.9 5 1.1 4 0.9 2 0.4 2 0.4 Three Years 250 1 0.4 1 0.4 0 0.0 0 0.0 0 0.0 Four Years 254 1 0.4 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 188 1 0.5 0 0.0 0 0.0 0 0.0 0 0.0 Total 2,044 17 0.8 7 0.3 4 0.2 2 0.1 2 0.1 6-17 Years 392 1 0.3 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 15

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Kent County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 17 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 106 4 3.8 1 0.9 0 0.0 0 0.0 0 0.0 Two Years 81 3 3.7 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 32 1 3.1 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 18 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 12 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 266 8 3.0 1 0.4 0 0.0 0 0.0 0 0.0 6-17 Years 10 1 10.0 0 0.0 0 0.0 0 0.0 0 0.0 Under One 8 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 67 4 6.0 1 1.5 0 0.0 0 0.0 0 0.0 Two Years 36 1 2.8 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 18 1 5.6 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 8 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 8 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 145 6 4.1 1 0.7 0 0.0 0 0.0 0 0.0 6-17 Years 3 1 33.3 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 16

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Montgomery County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 3,696 26 0.7 5 0.1 2 0.1 2 0.1 0 0.0 One Year 5,061 56 1.1 12 0.2 4 0.1 1 0.0 1 0.0 Two Years 4,984 42 0.8 4 0.1 3 0.1 3 0.1 3 0.1 Three Years 2,035 23 1.1 6 0.3 1 0.0 1 0.0 1 0.0 Four Years 2,473 29 1.2 8 0.3 6 0.2 4 0.2 1 0.0 Five Years 1,594 22 1.4 1 0.1 1 0.1 1 0.1 1 0.1 Total 19,843 198 1.0 36 0.2 17 0.1 12 0.1 7 0.0 6-17 Years 1,874 32 1.7 3 0.2 1 0.1 1 0.1 0 0.0 Under One 1,718 12 0.7 5 0.3 2 0.1 2 0.1 0 0.0 One Year 3,776 38 1.0 11 0.3 3 0.1 0 0.0 0 0.0 Two Years 3,179 26 0.8 4 0.1 3 0.1 3 0.1 3 0.1 Three Years 1,647 18 1.1 6 0.4 1 0.1 1 0.1 1 0.1 Four Years 2,093 25 1.2 8 0.4 6 0.3 4 0.2 1 0.0 Five Years 1,370 14 1.0 1 0.1 1 0.1 1 0.1 1 0.1 Total 13,783 133 1.0 35 0.3 16 0.1 11 0.1 6 0.0 6-17 Years 1,629 28 1.7 3 0.2 1 0.1 1 0.1 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 17

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Prince George s County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 1,888 20 1.1 4 0.2 3 0.2 1 0.1 0 0.0 One Year 5,951 87 1.5 10 0.2 3 0.1 1 0.0 1 0.0 Two Years 4,749 80 1.7 12 0.3 4 0.1 3 0.1 3 0.1 Three Years 2,418 39 1.6 3 0.1 0 0.0 0 0.0 0 0.0 Four Years 2,771 35 1.3 5 0.2 1 0.0 1 0.0 0 0.0 Five Years 1,895 28 1.5 5 0.3 1 0.1 1 0.1 0 0.0 Total 19,672 289 1.5 39 0.2 12 0.1 7 0.0 4 0.0 6-17 Years 2,846 32 1.1 8 0.3 3 0.1 3 0.1 0 0.0 Under One 1,250 8 0.6 4 0.3 3 0.2 1 0.1 0 0.0 One Year 4,884 66 1.4 10 0.2 3 0.1 1 0.0 1 0.0 Two Years 4,005 60 1.5 11 0.3 4 0.1 3 0.1 3 0.1 Three Years 2,133 33 1.5 3 0.1 0 0.0 0 0.0 0 0.0 Four Years 2,511 26 1.0 5 0.2 1 0.0 1 0.0 0 0.0 Five Years 1,705 18 1.1 5 0.3 1 0.1 1 0.1 0 0.0 Total 16,488 211 1.3 38 0.2 12 0.1 7 0.0 4 0.0 6-17 Years 2,559 26 1.0 8 0.3 3 0.1 3 0.1 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 18

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Queen Anne s County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 14 1 7.1 0 0.0 0 0.0 0 0.0 0 0.0 One Year 211 3 1.4 0 0.0 0 0.0 0 0.0 0 0.0 Two Years 141 4 2.8 2 1.4 0 0.0 0 0.0 0 0.0 Three Years 41 1 2.4 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 50 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 18 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 475 9 1.9 2 0.4 0 0.0 0 0.0 0 0.0 6-17 Years 22 3 13.6 1 4.5 0 0.0 0 0.0 0 0.0 Under One 6 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 137 1 0.7 0 0.0 0 0.0 0 0.0 0 0.0 Two Years 81 3 3.7 2 2.5 0 0.0 0 0.0 0 0.0 Three Years 28 1 3.6 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 34 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 14 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 300 5 1.7 2 0.7 0 0.0 0 0.0 0 0.0 6-17 Years 17 3 17.6 1 5.9 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 19

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Saint Mary s County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 235 3 1.3 0 0.0 0 0.0 0 0.0 0 0.0 One Year 631 7 1.1 0 0.0 0 0.0 0 0.0 0 0.0 Two Years 468 8 1.7 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 119 1 0.8 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 101 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 48 1 2.1 0 0.0 0 0.0 0 0.0 0 0.0 Total 1,602 20 1.2 0 0.0 0 0.0 0 0.0 0 0.0 6-17 Years 100 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Under One 16 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 96 1 1.0 0 0.0 0 0.0 0 0.0 0 0.0 Two Years 91 1 1.1 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 38 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 34 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 19 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 294 2 0.7 0 0.0 0 0.0 0 0.0 0 0.0 6-17 Years 62 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 20

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Somerset County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 29 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 200 6 3.0 2 1.0 1 0.5 1 0.5 0 0.0 Two Years 187 5 2.7 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 62 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 42 1 2.4 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 29 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 549 12 2.2 2 0.4 1 0.2 1 0.2 0 0.0 6-17 Years 91 1 1.1 0 0.0 0 0.0 0 0.0 0 0.0 Under One 23 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 181 6 3.3 2 1.1 1 0.6 1 0.6 0 0.0 Two Years 167 5 3.0 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 53 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 32 1 3.1 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 25 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 481 12 2.5 2 0.4 1 0.2 1 0.2 0 0.0 6-17 Years 87 1 1.1 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 21

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Talbot County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 13 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 279 6 2.2 1 0.4 1 0.4 1 0.4 0 0.0 Two Years 263 10 3.8 3 1.1 0 0.0 0 0.0 0 0.0 Three Years 50 2 4.0 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 35 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 15 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 655 18 2.7 4 0.6 1 0.2 1 0.2 0 0.0 6-17 Years 21 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Under One 11 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 137 5 3.6 1 0.7 1 0.7 1 0.7 0 0.0 Two Years 110 6 5.5 3 2.7 0 0.0 0 0.0 0 0.0 Three Years 39 2 5.1 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 30 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 11 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 338 13 3.8 4 1.2 1 0.3 1 0.3 0 0.0 6-17 Years 16 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 22

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Washington County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 69 1 1.4 0 0.0 0 0.0 0 0.0 0 0.0 One Year 998 64 6.4 5 0.5 3 0.3 2 0.2 0 0.0 Two Years 731 49 6.7 5 0.7 3 0.4 1 0.1 1 0.1 Three Years 274 14 5.1 1 0.4 0 0.0 0 0.0 0 0.0 Four Years 361 21 5.8 1 0.3 1 0.3 0 0.0 0 0.0 Five Years 258 17 6.6 0 0.0 0 0.0 0 0.0 0 0.0 Total 2,691 166 6.2 12 0.4 7 0.3 3 0.1 1 0.0 6-17 Years 112 8 7.1 1 0.9 0 0.0 0 0.0 0 0.0 Under One 53 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 743 50 6.7 5 0.7 3 0.4 2 0.3 0 0.0 Two Years 537 43 8.0 5 0.9 3 0.6 1 0.2 1 0.2 Three Years 264 14 5.3 1 0.4 0 0.0 0 0.0 0 0.0 Four Years 352 21 6.0 1 0.3 1 0.3 0 0.0 0 0.0 Five Years 250 17 6.8 0 0.0 0 0.0 0 0.0 0 0.0 Total 2,199 145 6.6 12 0.5 7 0.3 3 0.1 1 0.0 6-17 Years 110 8 7.3 1 0.9 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 23

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Wicomico County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 74 1 1.4 0 0.0 0 0.0 0 0.0 0 0.0 One Year 877 20 2.3 2 0.2 0 0.0 0 0.0 0 0.0 Two Years 754 17 2.3 1 0.1 1 0.1 1 0.1 0 0.0 Three Years 239 3 1.3 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 185 6 3.2 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 86 4 4.7 2 2.3 0 0.0 0 0.0 0 0.0 Total 2,215 51 2.3 5 0.2 1 0.0 1 0.0 0 0.0 6-17 Years 189 5 2.6 2 1.1 0 0.0 0 0.0 0 0.0 Under One 47 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 736 16 2.2 2 0.3 0 0.0 0 0.0 0 0.0 Two Years 603 13 2.2 1 0.2 1 0.2 1 0.2 0 0.0 Three Years 221 2 0.9 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 157 5 3.2 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 82 4 4.9 2 2.4 0 0.0 0 0.0 0 0.0 Total 1,846 40 2.2 5 0.3 1 0.1 1 0.1 0 0.0 6-17 Years 171 4 2.3 2 1.2 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 24

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Worcester County Criteria: The highest venous or the highest capillary in the absence of venous test Under One 24 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 316 2 0.6 1 0.3 1 0.3 1 0.3 1 0.3 Two Years 337 5 1.5 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 96 3 3.1 1 1.0 1 1.0 1 1.0 0 0.0 Four Years 69 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 35 1 2.9 0 0.0 0 0.0 0 0.0 0 0.0 Total 877 11 1.3 2 0.2 2 0.2 2 0.2 1 0.1 6-17 Years 70 1 1.4 1 1.4 1 1.4 0 0.0 0 0.0 Under One 22 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 262 2 0.8 1 0.4 1 0.4 1 0.4 1 0.4 Two Years 283 4 1.4 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 80 3 3.8 1 1.3 1 1.3 1 1.3 0 0.0 Four Years 59 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 29 1 3.4 0 0.0 0 0.0 0 0.0 0 0.0 Total 735 10 1.4 2 0.3 2 0.3 2 0.3 1 0.1 6-17 Years 59 1 1.7 1 1.7 1 1.7 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 25

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence County Unknown Criteria: The highest venous or the highest capillary in the absence of venous test Under One 0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 2 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Two Years 0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 2 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 4 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 6-17 Years 0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Under One 0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 One Year 0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Two Years 0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Three Years 0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Four Years 1 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Five Years 0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Total 1 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 6-17 Years 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 26

Number and percent of children 0-72 months with blood lead level at or above specific level (µg/dl) By age and county of residence Statewide Criteria: The highest venous or the highest capillary in the absence of venous test Under One 11,128 136 1.2 17 0.2 9 0.1 3 0.0 0 0.0 One Year 36,854 1,065 2.9 165 0.4 65 0.2 31 0.1 15 0.0 Two Years 29,774 1,004 3.4 145 0.5 64 0.2 31 0.0 19 0.1 Three Years 11,934 434 3.6 62 0.5 27 0.2 13 0.0 8 0.1 Four Years 11,822 351 3.0 47 0.4 18 0.2 10 0.1 4 0.0 Five Years 8,022 202 2.5 16 0.2 2 0.0 2 0.0 1 0.0 Total 109,534 3,192 2.9 452 0.4 185 0.2 90 0.1 47 0.0 6-17 Years 12,153 328 2.7 48 0.4 25 0.2 12 0.0 4 0.0 Under One 6,290 65 1.0 17 0.3 9 0.1 3 0.0 0 0.0 One Year 26,349 751 2.9 153 0.6 64 0.2 30 0.1 14 0.1 Two Years 20,642 719 3.5 133 0.6 60 0.3 30 0.0 18 0.1 Three Years 9,552 345 3.6 60 0.6 26 0.3 13 0.0 8 0.1 Four Years 9,768 283 2.9 46 0.5 18 0.2 10 0.1 4 0.0 Five Years 6,604 149 2.3 15 0.2 2 0.0 2 0.0 1 0.0 Total 79,205 2,312 2.9 424 0.5 179 0.2 88 0.1 45 0.1 6-17 Years 10,074 262 2.6 48 0.5 25 0.2 12 0.0 4 0.0 1. County assignment, in the order of available address information, is based on census tract or the zip code of the address. 27

Lead Poisoning Prevention Program Childhood Blood Lead Surveillance in Maryland Annual Report 2011 Number and percentage of incidence and prevalence cases by age and county of residence Supplementary Data Tables: Supplement #3 July, 2012

Number and percentage of incidence and prevalence of blood lead level 10 µg/dl by age and county of residence Allegany County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 832 20 2.4 0 0.0 0 0.0 0 0.0 One Year 775 571 73.6 0 0.0 3 0.5 3 0.5 Two Years 802 540 67.3 3 0.6 1 0.2 4 0.7 Three Years 786 80 10.2 1 1.3 1 1.3 2 2.5 Four Years 831 89 10.7 0 0.0 0 0.0 0 0.0 Five Years 739 59 8.0 0 0.0 0 0.0 0 0.0 Total 4,766 1,359 28.5 4 0.3 5 0.4 9 0.7 6-17 Years 8,959 73 0.8 0 0.0 Anne Arundel County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 8,207 491 6.0 0 0.0 1 0.2 1 0.2 One Year 8,129 3,416 42.0 0 0.0 3 0.1 3 0.1 Two Years 7,959 1,972 24.8 1 0.1 2 0.1 3 0.2 Three Years 7,816 849 10.9 0 0.0 0 0.0 0 0.0 Four Years 7,746 783 10.1 0 0.0 1 0.1 1 0.1 Five Years 7,534 651 8.6 0 0.0 0 0.0 0 0.0 Total 47,391 8,162 17.2 1 0.0 7 0.1 8 0.1 6-17 Years 80,637 655 0.8 0 0.0 Baltimore County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 11,401 1,694 14.9 0 0.0 1 0.1 1 0.1 One Year 11,404 5,648 49.5 1 0.0 9 0.2 10 0.2 Two Years 10,982 5,241 47.7 1 0.0 7 0.1 8 0.2 Three Years 10,956 1,503 13.7 2 0.1 1 0.1 3 0.2 Four Years 10,664 1,323 12.4 2 0.2 1 0.1 3 0.2 Five Years 10,607 966 9.1 1 0.1 0 0.0 1 0.1 Total 66,014 16,375 24.8 7 0.0 19 0.1 26 0.2 6-17 Years 114,179 1,530 1.3 0 0.0 Refer to Page 10 for terms and definitions 2

Number and percentage of incidence and prevalence of blood lead level 10 µg/dl by age and county of residence Baltimore City Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 10,418 1,504 14.4 0 0.0 6 0.4 6 0.4 One Year 10,003 6,620 66.2 13 0.2 82 1.2 95 1.4 Two Years 9,511 5,462 57.4 28 0.5 62 1.1 90 1.6 Three Years 8,973 2,407 26.8 20 0.8 17 0.7 37 1.5 Four Years 8,583 1,887 22.0 11 0.6 13 0.7 24 1.3 Five Years 8,193 1,169 14.3 4 0.3 2 0.2 6 0.5 Total 55,681 19,049 34.2 76 0.4 182 1.0 258 1.4 6-17 Years 81,542 3,097 3.8 0 0.0 Calvert County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 1,116 100 9.0 0 0.0 0 0.0 0 0.0 One Year 1,116 341 30.6 0 0.0 0 0.0 0 0.0 Two Years 1,130 172 15.2 0 0.0 0 0.0 0 0.0 Three Years 1,176 73 6.2 0 0.0 0 0.0 0 0.0 Four Years 1,202 45 3.7 0 0.0 0 0.0 0 0.0 Five Years 1,290 47 3.6 0 0.0 0 0.0 0 0.0 Total 7,030 778 11.1 0 0.0 0 0.0 0 0.0 6-17 Years 16,309 54 0.3 0 0.0 Caroline County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 523 13 2.5 0 0.0 0 0.0 0 0.0 One Year 525 330 62.9 1 0.3 1 0.3 2 0.6 Two Years 524 283 54.0 0 0.0 1 0.4 1 0.4 Three Years 561 50 8.9 0 0.0 1 2.0 1 2.0 Four Years 532 49 9.2 0 0.0 0 0.0 0 0.0 Five Years 512 26 5.1 0 0.0 0 0.0 0 0.0 Total 3,176 751 23.6 1 0.1 3 0.4 4 0.5 6-17 Years 5,361 23 0.4 0 0.0 Refer to Page 10 for terms and definitions 3

Number and percentage of incidence and prevalence of blood lead level 10 µg/dl by age and county of residence Carroll County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 1,906 150 7.9 0 0.0 0 0.0 0 0.0 One Year 2,017 530 26.3 2 0.4 6 1.1 8 1.5 Two Years 2,071 299 14.4 0 0.0 2 0.7 2 0.7 Three Years 2,136 116 5.4 0 0.0 0 0.0 0 0.0 Four Years 2,256 109 4.8 1 0.9 3 2.8 4 3.7 Five Years 2,426 83 3.4 0 0.0 0 0.0 0 0.0 Total 12,811 1,287 10.0 3 0.2 11 0.9 14 1.1 6-17 Years 28,737 105 0.4 0 0.0 Cecil County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 1,481 85 5.7 0 0.0 0 0.0 0 0.0 One Year 1,537 481 31.3 0 0.0 1 0.2 1 0.2 Two Years 1,479 226 15.3 0 0.0 0 0.0 0 0.0 Three Years 1,467 117 8.0 0 0.0 0 0.0 0 0.0 Four Years 1,436 130 9.0 0 0.0 0 0.0 0 0.0 Five Years 1,483 93 6.3 0 0.0 0 0.0 0 0.0 Total 8,884 1,132 12.7 0 0.0 1 0.1 1 0.1 6-17 Years 16,883 122 0.7 0 0.0 Charles County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 2,176 202 9.3 0 0.0 0 0.0 0 0.0 One Year 2,121 629 29.7 0 0.0 0 0.0 0 0.0 Two Years 2,268 512 22.6 0 0.0 0 0.0 0 0.0 Three Years 2,134 243 11.4 0 0.0 0 0.0 0 0.0 Four Years 2,170 204 9.4 0 0.0 0 0.0 0 0.0 Five Years 2,146 114 5.3 0 0.0 1 0.9 1 0.9 Total 13,015 1,904 14.6 0 0.0 1 0.1 1 0.1 6-17 Years 26,328 118 0.4 0 0.0 Refer to Page 10 for terms and definitions 4

Number and percentage of incidence and prevalence of blood lead level 10 µg/dl by age and county of residence Dorchester County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 494 10 2.0 0 0.0 0 0.0 0 0.0 One Year 472 266 56.4 1 0.4 0 0.0 1 0.4 Two Years 473 235 49.7 0 0.0 0 0.0 0 0.0 Three Years 456 82 18.0 0 0.0 0 0.0 0 0.0 Four Years 454 60 13.2 0 0.0 0 0.0 0 0.0 Five Years 399 28 7.0 0 0.0 0 0.0 0 0.0 Total 2,747 681 24.8 1 0.1 0 0.0 1 0.1 6-17 Years 4,495 28 0.6 0 0.0 Frederick County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 3,312 143 4.3 0 0.0 0 0.0 0 0.0 One Year 3,311 1,446 43.7 0 0.0 3 0.2 3 0.2 Two Years 3,471 611 17.6 2 0.3 2 0.3 4 0.7 Three Years 3,465 354 10.2 3 0.8 2 0.6 5 1.4 Four Years 3,544 399 11.3 0 0.0 0 0.0 0 0.0 Five Years 3,495 288 8.2 0 0.0 0 0.0 0 0.0 Total 20,597 3,241 15.7 5 0.2 7 0.2 12 0.4 6-17 Years 39,441 151 0.4 0 0.0 Garrett County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 356 8 2.2 0 0.0 0 0.0 0 0.0 One Year 330 166 50.3 0 0.0 1 0.6 1 0.6 Two Years 368 151 41.0 0 0.0 1 0.7 1 0.7 Three Years 359 44 12.3 0 0.0 1 2.3 1 2.3 Four Years 373 39 10.4 0 0.0 0 0.0 0 0.0 Five Years 399 30 7.5 0 0.0 0 0.0 0 0.0 Total 2,185 438 20.0 0 0.0 3 0.7 3 0.7 6-17 Years 4,540 13 0.3 0 0.0 Refer to Page 10 for terms and definitions 5

Number and percentage of incidence and prevalence of blood lead level 10 µg/dl by age and county of residence Harford County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 3,369 454 13.5 0 0.0 0 0.0 0 0.0 One Year 3,438 869 25.3 0 0.0 3 0.3 3 0.3 Two Years 3,421 773 22.6 0 0.0 0 0.0 0 0.0 Three Years 3,510 333 9.5 0 0.0 1 0.3 1 0.3 Four Years 3,509 290 8.3 0 0.0 1 0.3 1 0.3 Five Years 3,472 251 7.2 0 0.0 0 0.0 0 0.0 Total 20,720 2,970 14.3 0 0.0 5 0.2 5 0.2 6-17 Years 40,610 390 1.0 0 0.0 Howard County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 3,893 195 5.0 0 0.0 0 0.0 0 0.0 One Year 3,892 909 23.4 0 0.0 1 0.1 1 0.1 Two Years 4,074 602 14.8 1 0.2 4 0.7 5 0.8 Three Years 4,036 317 7.9 0 0.0 1 0.3 1 0.3 Four Years 4,090 308 7.5 0 0.0 0 0.0 0 0.0 Five Years 4,276 227 5.3 0 0.0 0 0.0 0 0.0 Total 24,261 2,558 10.5 1 0.0 6 0.2 7 0.3 6-17 Years 51,292 459 0.9 0 0.0 Kent County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 238 17 7.1 0 0.0 0 0.0 0 0.0 One Year 238 106 44.6 0 0.0 1 0.9 1 0.9 Two Years 218 81 37.1 0 0.0 0 0.0 0 0.0 Three Years 230 32 13.9 0 0.0 0 0.0 0 0.0 Four Years 223 18 8.1 0 0.0 0 0.0 0 0.0 Five Years 233 12 5.1 0 0.0 0 0.0 0 0.0 Total 1,380 266 19.3 0 0.0 1 0.4 1 0.4 6-17 Years 2,255 10 0.4 0 0.0 Refer to Page 10 for terms and definitions 6

Number and percentage of incidence and prevalence of blood lead level 10 µg/dl by age and county of residence Montgomery County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 14,892 3,696 24.8 0 0.0 5 0.1 5 0.1 One Year 14,857 5,061 34.1 0 0.0 12 0.2 12 0.2 Two Years 14,755 4,984 33.8 0 0.0 4 0.1 4 0.1 Three Years 14,337 2,035 14.2 1 0.0 5 0.2 6 0.3 Four Years 14,581 2,473 17.0 3 0.1 5 0.2 8 0.3 Five Years 14,173 1,594 11.2 0 0.0 1 0.1 1 0.1 Total 87,595 19,843 22.7 4 0.0 32 0.2 36 0.2 6-17 Years 151,071 1,874 1.2 0 0.0 Prince George's County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 14,353 1,888 13.2 0 0.0 4 0.2 4 0.2 One Year 13,814 5,951 43.1 0 0.0 10 0.2 10 0.2 Two Years 13,406 4,749 35.4 1 0.0 11 0.2 12 0.3 Three Years 13,285 2,418 18.2 1 0.0 2 0.1 3 0.1 Four Years 12,664 2,771 21.9 0 0.0 5 0.2 5 0.2 Five Years 12,289 1,895 15.4 0 0.0 5 0.3 5 0.3 Total 79,810 19,672 24.6 2 0.0 37 0.2 39 0.2 6-17 Years 130,648 2,846 2.2 0 0.0 Queen Anne's County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 630 14 2.2 0 0.0 0 0.0 0 0.0 One Year 612 211 34.5 0 0.0 0 0.0 0 0.0 Two Years 609 141 23.2 0 0.0 2 1.4 2 1.4 Three Years 627 41 6.5 0 0.0 0 0.0 0 0.0 Four Years 644 50 7.8 0 0.0 0 0.0 0 0.0 Five Years 676 18 2.7 0 0.0 0 0.0 0 0.0 Total 3,798 475 12.5 0 0.0 2 0.4 2 0.4 6-17 Years 7,754 22 0.3 0 0.0 Refer to Page 10 for terms and definitions 7

Number and percentage of incidence and prevalence of blood lead level 10 µg/dl by age and county of residence Saint Mary's County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 1,755 235 13.4 0 0.0 0 0.0 0 0.0 One Year 1,729 631 36.5 0 0.0 0 0.0 0 0.0 Two Years 1,711 468 27.4 0 0.0 0 0.0 0 0.0 Three Years 1,795 119 6.6 0 0.0 0 0.0 0 0.0 Four Years 1,739 101 5.8 0 0.0 0 0.0 0 0.0 Five Years 1,698 48 2.8 0 0.0 0 0.0 0 0.0 Total 10,427 1,602 15.4 0 0.0 0 0.0 0 0.0 6-17 Years 17,793 100 0.6 0 0.0 Somerset County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 305 29 9.5 0 0.0 0 0.0 0 0.0 One Year 300 200 66.6 1 0.5 1 0.5 2 1.0 Two Years 314 187 59.6 0 0.0 0 0.0 0 0.0 Three Years 269 62 23.0 0 0.0 0 0.0 0 0.0 Four Years 285 42 14.7 0 0.0 0 0.0 0 0.0 Five Years 270 29 10.7 0 0.0 0 0.0 0 0.0 Total 1,742 549 31.5 1 0.2 1 0.2 2 0.4 6-17 Years 2,828 91 3.2 0 0.0 Talbot County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 399 13 3.3 0 0.0 0 0.0 0 0.0 One Year 465 279 60.1 0 0.0 1 0.4 1 0.4 Two Years 457 263 57.6 1 0.4 2 0.8 3 1.1 Three Years 404 50 12.4 0 0.0 0 0.0 0 0.0 Four Years 419 35 8.3 0 0.0 0 0.0 0 0.0 Five Years 457 15 3.3 0 0.0 0 0.0 0 0.0 Total 2,600 655 25.2 1 0.2 3 0.5 4 0.6 6-17 Years 4,881 21 0.4 0 0.0 Refer to Page 10 for terms and definitions 8

Number and percentage of incidence and prevalence of blood lead level 10 µg/dl by age and county of residence Washington County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 2,066 69 3.3 0 0.0 0 0.0 0 0.0 One Year 2,046 998 48.8 0 0.0 5 0.5 5 0.5 Two Years 2,114 731 34.6 2 0.3 3 0.4 5 0.7 Three Years 2,147 274 12.8 0 0.0 1 0.4 1 0.4 Four Years 1,993 361 18.1 0 0.0 1 0.3 1 0.3 Five Years 2,096 258 12.3 0 0.0 0 0.0 0 0.0 Total 12,462 2,691 21.6 2 0.1 10 0.4 12 0.4 6-17 Years 22,051 112 0.5 0 0.0 Wicomico County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 1,465 74 5.0 0 0.0 0 0.0 0 0.0 One Year 1,470 877 59.6 0 0.0 2 0.2 2 0.2 Two Years 1,411 754 53.4 0 0.0 1 0.1 1 0.1 Three Years 1,462 239 16.3 0 0.0 0 0.0 0 0.0 Four Years 1,271 185 14.6 0 0.0 0 0.0 0 0.0 Five Years 1,348 86 6.4 1 1.2 1 1.2 2 2.3 Total 8,427 2,215 26.3 1 0.0 4 0.2 5 0.2 6-17 Years 14,165 189 1.3 0 0.0 Worcester County Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 542 24 4.4 0 0.0 0 0.0 0 0.0 One Year 546 316 57.9 0 0.0 1 0.3 1 0.3 Two Years 532 337 63.4 0 0.0 0 0.0 0 0.0 Three Years 525 96 18.3 0 0.0 1 1.0 1 1.0 Four Years 533 69 13.0 0 0.0 0 0.0 0 0.0 Five Years 504 35 6.9 0 0.0 0 0.0 0 0.0 Total 3,182 877 27.6 0 0.0 2 0.2 2 0.2 6-17 Years 6,361 70 1.1 0 0.0 Refer to Page 10 for terms and definitions 9

Number and percentage of incidence and prevalence of blood lead level 10 µg/dl by age and county of residence County Unknown Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 0 0 0.0 0 0.0 0 0.0 One Year 2 0 0.0 0 0.0 0 0.0 Two Years 0 0 0.0 0 0.0 0 0.0 Three Years 0 0 0.0 0 0.0 0 0.0 Four Years 2 0 0.0 0 0.0 0 0.0 Five Years 0 0 0.0 0 0.0 0 0.0 Total 4 0 0.0 0 0.0 0 0.0 6-17 Years 0 0 0.0 Statewide Population Number of Children with Blood Lead Level =10 µg/dl of Children Tested Old Cases New (Incident) Cases Total (Prevalent) Cases Age Group Children Number Percent Number Percent Number Percent Number Percent Under One 86,129 11,128 12.9 0 0.0 17 0.2 17 0.2 One Year 85,146 36,854 43.3 19 0.1 146 0.4 165 0.4 Two Years 84,058 29,774 35.4 40 0.1 105 0.4 145 0.5 Three Years 82,913 11,934 14.4 28 0.2 34 0.3 62 0.5 Four Years 81,741 11,822 14.5 17 0.1 30 0.3 47 0.4 Five Years 80,715 8,022 9.9 6 0.1 10 0.1 16 0.2 Total 500,702 109,534 21.9 110 0.1 342 0.3 452 0.4 6-17 Years 879,120 12,153 1.4 0 0.0 Terms and definitions: 1. County assignment in the order of available address information is based on census tract or zip code of the address. 2. Population of children was projected from Maryland census population 2010, provided by the Maryland Data Center, Maryland Department of Planning, www.planning.maryland.gov/msdc. Because of inherent problems with projection, the projected population may not correspond to the number of children tested. In such cases, the percentages are removed and replaced with an astrix *. 3. Old cases of EBL are based on the number of children who have had a blood lead test with blood lead level 10 µg/dl in 2011 and had at least one blood lead test with blood lead level 10 µg/dl in the past. Old cases are not determined for children 6-17 years old. 4. Incidence is based on the number of children with the very first blood lead test with blood lead level 10 µg/dl in 2011. These children may have not been tested for lead in the past or all their previous blood lead tests were below 10 µg/dl. Incidence data is not calculated for children 6-17 years old. 5. Prevalence is the number of children with at least one blood lead test with blood lead level 10 µg/dl in 2011. 10

Lead Poisoning Prevention Program Childhood Blood Lead Surveillance in Maryland Annual Report 2011 Number and percentage of children tested for lead (2002-2011), with number of percentage of those with Elevated Blood Lead (EBL), or Lead Poisoning (2002-2004), and with Prevalence and Incidence Cases (2005-2011) by county of residence Supplementary Data Tables: Supplement # 4 July, 2012

Number and percentage of children 0-72 months tested for lead with the status of those with blood lead level 10 µg/dl by jurisdiction: 2001-2010 (Refer to page 10 for terms and definitions) Allegany County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 4,618 1,183 25.6 29 2.5 2 0.2 2003 4,234 1,315 31.1 30 2.3 5 0.4 2004 4,747 1,329 28.0 24 1.8 3 0.2 Prevalence Cases Incidence Cases 2005 4,821 1,037 21.5 32 3.1 25 2.4 2006 4,904 1,172 23.9 22 1.9 17 1.5 2007 4,957 1,231 24.8 12 1.0 11 0.9 2008 4,966 1,323 26.6 11 0.8 8 0.6 2009 5,007 1,371 27.4 15 1.1 13 0.9 2010 5,141 1,332 25.9 10 0.8 7 0.5 2011 4,766 1,359 28.5 9 0.7 5 0.4 Anne Arundel County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 40,257 5,944 14.8 30 0.5 4 0.1 2003 40,844 5,029 12.3 20 0.4 1 0.0 2004 41,895 6,806 16.2 27 0.4 6 0.1 Prevalence Cases Incidence Cases 2005 42,575 6,631 15.6 20 0.3 18 0.3 2006 43,306 6,422 14.8 20 0.3 16 0.2 2007 43,779 6,615 15.1 19 0.3 16 0.2 2008 44,090 6,817 15.5 7 0.1 6 0.1 2009 44,471 7,333 16.5 7 0.1 5 0.1 2010 45,643 7,982 17.5 14 0.2 12 0.2 2011 47,391 8,162 17.2 8 0.1 7 0.1 Baltimore County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 55,444 10,499 18.9 148 1.4 12 0.1 2003 54,933 10,427 19.0 120 1.2 18 0.2 2004 57,205 14,947 26.1 108 0.7 10 0.1 Prevalence Cases Incidence Cases 2005 58,150 14,505 24.9 110 0.8 84 0.6 2006 59,148 15,344 25.9 85 0.6 69 0.4 2007 59,794 16,255 27.2 62 0.4 52 0.3 2008 60,547 15,837 26.2 36 0.2 31 0.2 2009 61,053 16,139 26.4 28 0.2 21 0.1 2010 62,670 16,732 26.7 34 0.2 25 0.2 2011 66,014 16,375 24.8 26 0.2 19 0.1 2

Number and percentage of children 0-72 months tested for lead with the status of those with blood lead level 10 µg/dl by jurisdiction: 2001-2010 (Refer to page 10 for terms and definitions) Baltimore City Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 52,744 16,595 31.5 1,558 9.4 183 1.1 2003 51,892 18,242 35.2 1,166 6.4 160 0.9 2004 52,796 18,970 35.9 1,183 6.2 147 0.8 Prevalence Cases Incidence Cases 2005 53,626 17,943 33.5 854 4.8 534 3.0 2006 54,547 18,363 33.7 843 4.6 573 3.1 2007 55,142 17,670 32.0 624 3.5 435 2.5 2008 55,959 18,623 33.3 468 2.5 302 1.6 2009 56,431 19,043 33.7 347 1.8 214 1.1 2010 57,937 19,702 34.0 314 1.6 229 1.2 2011 55,681 19,049 34.2 258 1.4 182 1.0 Calvert County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 6,252 899 14.4 8 0.9 2 0.2 2003 6,209 682 11.0 2 0.3 0 0.0 2004 6,504 838 12.9 0 0.0 0 0.0 Prevalence Cases Incidence Cases 2005 6,623 753 11.4 7 0.9 6 0.8 2006 6,737 749 11.1 9 1.2 9 1.2 2007 6,810 785 11.5 1 0.1 1 0.1 2008 6,864 768 11.2 0 0.0 0 0.0 2009 6,920 698 10.1 1 0.1 1 0.1 2010 7,103 717 10.1 1 0.1 1 0.1 2011 7,030 778 11.1 0 0.0 0 0.0 Caroline County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 2,168 699 32.2 48 6.9 3 0.4 2003 2,270 796 35.1 14 1.8 3 0.4 2004 2,379 794 33.4 17 2.1 1 0.1 Prevalence Cases Incidence Cases 2005 2,422 849 35.1 11 1.3 10 1.2 2006 2,463 893 36.3 7 0.8 3 0.3 2007 2,490 856 34.4 8 0.9 5 0.6 2008 2,497 852 34.1 7 0.8 3 0.4 2009 2,516 839 33.3 7 0.8 5 0.6 2010 2,584 870 33.7 9 1.0 6 0.7 2011 3,176 751 23.6 4 0.5 3 0.4 3

Number and percentage of children 0-72 months tested for lead with the status of those with blood lead level 10 µg/dl by jurisdiction: 2001-2010 (Refer to page 10 for terms and definitions) Carroll County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 11,888 978 8.2 10 1.0 1 0.1 2003 11,801 1,040 8.8 14 1.3 2 0.2 2004 12,938 1,323 10.2 13 1.0 1 0.1 Prevalence Cases Incidence Cases 2005 13,173 1,460 11.1 5 0.3 3 0.2 2006 13,400 1,378 10.3 7 0.5 5 0.4 2007 13,546 1,404 10.4 3 0.2 2 0.1 2008 13,872 1,343 9.7 8 0.6 7 0.5 2009 13,988 1,342 9.6 7 0.5 6 0.4 2010 14,356 1,368 9.5 7 0.5 6 0.4 2011 12,811 1,287 10.0 14 1.1 11 0.9 Cecil County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 7,104 1,018 14.3 9 0.9 2 0.2 2003 7,127 959 13.5 9 0.9 2 0.2 2004 7,548 1,073 14.2 6 0.6 0 0.0 Prevalence Cases Incidence Cases 2005 7,677 1,046 13.6 7 0.7 6 0.6 2006 7,808 1,058 13.5 6 0.6 6 0.6 2007 7,894 1,186 15.0 6 0.5 4 0.3 2008 7,965 1,265 15.9 6 0.5 4 0.3 2009 8,030 1,212 15.1 4 0.3 2 0.2 2010 8,245 1,302 15.8 1 0.1 0 0.0 2011 8,884 1,132 12.7 1 0.1 1 0.1 Charles County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 10,812 1,790 16.6 8 0.4 0 0.0 2003 11,023 1,391 12.6 2 0.1 0 0.0 2004 11,019 2,040 18.5 9 0.4 1 0.0 Prevalence Cases Incidence Cases 2005 11,212 1,811 16.2 7 0.4 6 0.3 2006 11,404 1,919 16.8 1 0.1 1 0.1 2007 11,529 1,999 17.3 1 0.1 1 0.1 2008 12,001 2,032 16.9 1 0.0 1 0.0 2009 12,101 1,836 15.2 4 0.2 4 0.2 2010 12,418 2,042 16.4 2 0.1 2 0.1 2011 13,015 1,904 14.6 1 0.1 1 0.1 4

Number and percentage of children 0-72 months tested for lead with the status of those with blood lead level 10 µg/dl by jurisdiction: 2001-2010 (Refer to page 10 for terms and definitions) Dorchester County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 1,902 513 27.0 36 7.0 5 1.0 2003 1,952 540 27.7 26 4.8 5 0.9 2004 2,106 629 29.9 17 2.7 1 0.2 Prevalence Cases Incidence Cases 2005 2,141 609 28.5 11 1.8 8 1.3 2006 2,177 684 31.4 11 1.6 8 1.2 2007 2,201 676 30.7 9 1.3 7 1.0 2008 2,266 680 30.0 9 1.3 5 0.7 2009 2,287 730 31.9 3 0.4 2 0.3 2010 2,346 774 33.0 5 0.6 4 0.5 2011 2,747 681 24.8 1 0.1 0 0.0 Frederick County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 17,434 1,584 9.1 22 1.4 2 0.1 2003 17,641 1,630 9.2 16 1.0 2 0.1 2004 17,865 2,796 15.7 22 0.8 2 0.1 Prevalence Cases Incidence Cases 2005 18,172 3,019 16.6 14 0.5 11 0.4 2006 18,484 3,108 16.8 10 0.3 7 0.2 2007 18,686 3,465 18.5 10 0.3 10 0.3 2008 19,184 3,376 17.6 16 0.5 13 0.4 2009 19,349 3,181 16.4 11 0.3 7 0.2 2010 19,859 3,147 15.8 9 0.3 8 0.3 2011 20,597 3,241 15.7 12 0.4 7 0.2 Garrett County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 2,046 297 14.5 3 1.0 0 0.0 2003 2,020 429 21.2 3 0.7 0 0.0 2004 2,323 563 24.2 7 1.2 3 0.5 Prevalence Cases Incidence Cases 2005 2,365 532 22.5 4 0.8 3 0.6 2006 2,406 495 20.6 5 1.0 3 0.6 2007 2,432 541 22.2 2 0.4 2 0.4 2008 2,468 479 19.4 2 0.4 1 0.2 2009 2,490 473 19.0 2 0.4 2 0.4 2010 2,555 517 20.2 1 0.2 1 0.2 2011 2,185 438 20.0 3 0.7 3 0.7 5

Number and percentage of children 0-72 months tested for lead with the status of those with blood lead level 10 µg/dl by jurisdiction: 2001-2010 (Refer to page 10 for terms and definitions) Harford County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 18,530 2,216 12.0 26 1.2 2 0.1 2003 18,482 2,674 14.5 19 0.7 2 0.1 2004 20,032 3,170 15.8 24 0.8 3 0.1 Prevalence Cases Incidence Cases 2005 20,371 2,939 14.4 17 0.6 14 0.5 2006 20,721 3,041 14.7 15 0.5 14 0.5 2007 20,947 3,346 16.0 6 0.2 5 0.1 2008 21,005 3,258 15.5 5 0.2 5 0.2 2009 21,180 3,184 15.0 2 0.1 2 0.1 2010 21,745 3,176 14.6 8 0.3 8 0.3 2011 20,720 2,970 14.3 5 0.2 5 0.2 Howard County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 22,090 1,796 8.1 16 0.9 2 0.1 2003 22,193 1,688 7.6 8 0.5 2 0.1 2004 23,278 2,338 10.0 13 0.6 1 0.0 Prevalence Cases Incidence Cases 2005 23,686 2,273 9.6 7 0.3 4 0.2 2006 24,092 2,188 9.1 8 0.4 6 0.3 2007 24,355 2,334 9.6 3 0.1 2 0.1 2008 24,777 2,493 10.1 5 0.2 4 0.2 2009 24,990 2,503 10.0 1 0.0 1 0.0 2010 25,645 2,631 10.3 3 0.1 2 0.1 2011 24,261 2,558 10.5 7 0.3 6 0.2 Kent County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 1,095 149 13.6 1 0.7 0 0.0 2003 1,041 157 15.1 3 1.9 0 0.0 2004 1,144 208 18.2 6 2.9 4 1.9 Prevalence Cases Incidence Cases 2005 1,164 172 14.8 2 1.2 2 1.2 2006 1,184 257 21.7 4 1.6 4 1.6 2007 1,197 334 27.9 2 0.6 1 0.3 2008 1,242 303 24.4 5 1.7 3 1.0 2009 1,253 323 25.8 2 0.6 0 0.0 2010 1,286 277 21.5 2 0.7 2 0.7 2011 1,380 266 19.3 1 0.4 1 0.4 6

Number and percentage of children 0-72 months tested for lead with the status of those with blood lead level 10 µg/dl by jurisdiction: 2001-2010 (Refer to page 10 for terms and definitions) Montgomery County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 75,588 12,082 16.0 61 0.5 8 0.1 2003 76,648 10,163 13.3 53 0.5 9 0.1 2004 75,867 15,934 21.0 81 0.5 12 0.1 Prevalence Cases Incidence Cases 2005 77,085 16,353 21.2 65 0.4 55 0.3 2006 78,408 17,411 22.2 53 0.3 48 0.3 2007 79,264 18,274 23.1 35 0.2 31 0.2 2008 80,262 18,587 23.2 36 0.2 25 0.1 2009 80,950 18,200 22.5 25 0.1 20 0.1 2010 83,089 20,961 25.2 30 0.1 26 0.1 2011 87,595 19,843 22.7 36 0.2 32 0.2 Prince George's County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 73,365 14,930 20.4 98 0.7 10 0.1 2003 73,788 12,426 16.8 77 0.6 7 0.1 2004 73,498 19,785 26.9 87 0.4 16 0.1 Prevalence Cases Incidence Cases 2005 74,714 17,906 24.0 68 0.4 61 0.3 2006 75,996 18,561 24.4 71 0.4 66 0.4 2007 76,826 18,071 23.5 38 0.2 35 0.2 2008 77,625 18,732 24.1 41 0.2 33 0.2 2990 78,279 19,594 25.0 50 0.3 45 0.2 2010 80,358 21,595 26.9 53 0.2 42 0.2 2011 79,810 19,672 24.6 39 0.2 37 0.2 Queen Anne's County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 3,079 444 14.4 7 1.6 1 0.2 2003 3,123 495 15.8 5 1.0 2 0.4 2004 3,312 453 13.7 4 0.9 0 0.0 Prevalence Cases Incidence Cases 2005 3,367 484 14.4 0 0.0 0 0.0 2006 3,425 659 19.2 4 0.6 4 0.6 2007 3,462 703 20.3 4 0.6 2 0.3 2008 3,583 594 16.6 1 0.2 1 0.2 2009 3,614 607 16.8 4 0.7 4 0.7 2010 3,709 573 15.4 4 0.7 2 0.3 2011 3,798 475 12.5 2 0.4 2 0.4 7

Number and percentage of children 0-72 months tested for lead with the status of those with blood lead level 10 µg/dl by jurisdiction: 2001-2010 (Refer to page 10 for terms and definitions) Saint Mary's County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 7,533 1,059 14.1 10 0.9 0 0.0 2003 7,827 903 11.5 9 1.0 0 0.0 2004 8,006 1,390 17.4 2 0.1 0 0.0 Prevalence Cases Incidence Cases 2005 8,145 1,381 17.0 10 0.7 9 0.7 2006 8,285 1,517 18.3 11 0.7 11 0.7 2007 8,375 1,468 17.5 2 0.1 1 0.1 2008 8,548 1,517 17.7 4 0.3 3 0.2 2009 8,618 1,527 17.7 4 0.3 3 0.2 2010 8,847 1,659 18.8 0 0.0 0 0.0 2011 10,427 1,602 15.4 0 0.0 0 0.0 Somerset County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 1,461 512 35.0 21 4.1 0 0.0 2003 1,457 544 37.3 18 3.3 5 0.9 2004 1,508 477 31.6 10 2.1 3 0.6 Prevalence Cases Incidence Cases 2005 1,534 488 31.8 8 1.6 3 0.6 2006 1,560 506 32.4 9 1.8 5 1.0 2007 1,577 529 33.5 2 0.4 2 0.4 2008 1,521 522 34.3 2 0.4 2 0.4 2009 1,533 497 32.4 4 0.8 3 0.6 2010 1,575 517 32.8 1 0.2 1 0.2 2011 1,742 549 31.5 2 0.4 1 0.2 Talbot County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 2,173 441 20.3 19 4.3 4 0.9 2003 2,111 449 21.3 15 3.3 1 0.2 2004 2,244 488 21.7 6 1.2 0 0.0 Prevalence Cases Incidence Cases 2005 2,286 573 25.1 2 0.3 2 0.3 2007 2,326 636 27.3 5 0.8 5 0.8 2007 2,351 702 29.9 4 0.6 3 0.4 2008 2,399 612 25.5 5 0.8 5 0.8 2009 2,417 675 27.9 4 0.6 3 0.4 2010 2,482 692 27.9 3 0.4 2 0.3 2011 2,600 655 25.2 4 0.6 3 0.5 8

Number and percentage of children 0-72 months tested for lead with the status of those with blood lead level 10 µg/dl by jurisdiction: 2001-2010 (Refer to page 10 for terms and definitions) Washington County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 9,552 1,500 15.7 19 1.3 4 0.3 2003 9,737 1,971 20.2 15 0.8 3 0.2 2004 10,252 3,029 29.5 39 1.3 10 0.3 Prevalence Cases Incidence Cases 2005 10,414 3,235 31.1 21 0.6 18 0.6 2006 10,593 3,012 28.4 18 0.6 15 0.5 2007 10,709 3,064 28.6 8 0.3 6 0.2 2008 11,113 3,041 27.4 13 0.4 11 0.4 2009 11,207 3,006 26.8 9 0.3 9 0.3 2010 11,503 2,544 22.1 9 0.4 6 0.2 2011 12,462 2,691 21.6 12 0.4 10 0.4 Wicomico County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 6,714 1,747 26.0 74 4.2 9 0.5 2003 6,594 2,031 30.8 50 2.5 7 0.3 2004 6,736 1,917 28.5 40 2.1 4 0.2 Prevalence Cases Incidence Cases 2005 6,838 2,096 30.7 29 1.4 18 0.9 2006 6,955 2,440 35.1 22 0.9 16 0.7 2007 7,031 2,975 42.3 23 0.8 14 0.5 2008 6,998 2,420 34.6 20 0.8 13 0.5 2009 7,058 2,248 31.9 10 0.4 6 0.3 2010 7,246 2,342 32.3 9 0.4 5 0.2 2011 8,427 2,215 26.3 5 0.2 4 0.2 Worcester County Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 2,968 542 18.3 34 6.3 4 0.7 2003 3,022 731 24.2 24 3.3 1 0.1 2004 2,904 675 23.2 11 1.6 2 0.3 Prevalence Cases Incidence Cases 2005 2,952 696 23.6 6 0.9 3 0.4 2006 3,002 962 32.0 7 0.7 5 0.5 2007 3,035 947 31.2 7 0.7 5 0.5 2008 3,148 910 28.9 5 0.5 3 0.3 2009 3,177 850 26.8 2 0.2 1 0.1 2010 3,259 900 27.6 2 0.2 2 0.2 2011 3,182 877 27.6 2 0.2 2 0.2 9

Number and percentage of children 0-72 months tested for lead with the status of those with blood lead level 10 µg/dl by jurisdiction: 2001-2010 County Unknown Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 90 2 0 2003 9 1 0 2004 3,577 55 0 Prevalence Cases Incidence Cases 2005 357 14 13 2006 199 21 20 2007 278 1 1 2008 69 0 0 2009 5 0 0 2010 477 0 0 2011 4 0 0 Statewide Blood Lead Tests Elevated Blood Lead Lead Poisoning Calendar Year Population Number Percent Number Percent Number Percent 2002 436,817 79,507 18.2 2,297 2.9 260 0.3 2003 437,968 76,721 17.5 1,719 2.2 237 0.3 2004 448,106 105,549 23.6 1,811 1.7 230 0.2 Prevalence Cases Incidence Cases 2005 455,514 99,148 21.8 1,331 1.3 916 0.9 2006 463,331 102,974 22.2 1,274 1.2 936 0.9 2007 468,390 105,708 22.6 892 0.8 654 0.6 2008 474,900 106,453 22.4 713 0.7 489 0.5 2009 478,919 107,416 22.4 553 0.5 379 0.4 2010 491,598 114,829 23.4 531 0.5 399 0.3 2011 500,702 109,534 21.9 452 0.4 342 0.3 Terms and definitions 1. Population of children for 2002 and 2003 are adapted from the US Census Bureau five-year age-sex-county specific population estimate for 2002 and 2003. The 2004-2010 populations are adapted from US Census Bureau: State Interim Population Projection by Age and Sex: 2000-2030. Population for 2011 was adapted from Maryland census population 2010, provided by the Maryland Data Center, Maryland Department of Planning, www.planning.maryland.gov/msdc. 2. Elevated Blood Lead level (EBL) is defined as a venous or a capillary blood lead level 10 µg/dl 3. Lead Poisoning is defined as a venous blood lead level 20 µg/dl. 4. From 2005 forward the term Prevalence is introduced based on number of children with blood lead level 10 µg/dl who may have one or more EBL in the past, and term Incidence is introduced based on number of children with the very first EBL in that calendar year. 5. County assignment for 2002 and 2003, the child s census tract was the first order of priority followed by child s zip code address, and the provider s zip code address as the last. From 2004 forward county assignment is based on child s address census tract or the zip code. Reports with no or incomplete address were assumed to be from Maryland children with county unknown.

Lead Poisoning Prevention Program Childhood Blood Lead Surveillance in Maryland Annual Report 2011 Age-specific blood lead testing by jurisdiction: Five year data: 2007-2011 Supplementary Data Tables: Supplement #5 July, 2012