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April 2017 <br /> FACT SHEET <br /> ,´┐ŻLk e, Lead-Impacted Soil Response Action for Kolekole <br /> HAWAII STATE Gulch Park <br /> DEPARTMENT <br /> Honomu Hawaii <br /> OF HEALTH Honomu, <br /> Hawaii Department of Health, HEER Office <br /> 1582 Kamehameha Avenue, TMK: (3) 2-8-015:015. Old Mamalahoa Highway,Honomu,Hawaii <br /> Hilo, Hawaii 96720-4623 Island <br /> Introduction <br /> This fact sheet provides information on the State of Hawai`i harmful to children than adults because it can accumulate and <br /> Department of Transportation (HDOT) Lead-Impacted Soil persist in their bodies, and young children are more sensitive <br /> Response Action for Kolekole Gulch Park. Under the to its potentially harmful effects. <br /> oversight of the Hawai`i Department of Health (HDOH) The grass cover in the park helps to minimize exposure, but <br /> Hazard Evaluation and Emergency Response Office (HEER mud that may come up through the grass on wet days and any <br /> Office), a response action has begun for assessment of lead- dust generated on dry days would increase potential for <br /> impacted soil found around Kolekole Stream Bridge and within exposure. Additional soil testing and risk assessment is <br /> Kolekole Gulch Park. The County Depaitment of Parks and planned. An evaluation of potential hazards to County <br /> Recreation closed public access to the Kolekole Gulch Park on employees based on exposures to lead in soils at the park will <br /> April 18,2017 pending additional assessment and evaluation of also be made, and any bare soil areas discovered in the park <br /> the lead impacted soil. will be covered.A map showing the areas that have been found <br /> Site Description and Previous Uses to be impacted by lead(i.e. lead in soils below grass or gravel <br /> at surface)during initial testing is provided on the next page. <br /> The Project site is located beneath Kolekole Stream Bridge and The concentrations of lead in the soil in the park are <br /> extends approximately 300 feet in the mauka direction. comparable to levels found along some busy roadsides in urban <br /> Kolekole Stream runs northwest and adjacent to the Project areas, as reported in USEPA documents on lead in soil. In this <br /> site.Access to the Project site is via Old Mamalahoa Highway. case,the lead in soil is suspected to be related to historic,lead- <br /> Kolekole Gulch Park is located southwest and adjacent to based paint used on Kolekole Stream Bridge (during 1950- <br /> Kolekole Stream Bridge. 2000). Lead-based paints were commonly used in the past <br /> Kolekole Stream Bridge was originally part of a railroad that and may have been released to soil as it aged and became <br /> was rebuilt in 1950 to be used by cars.Lead paint removal from weathered or through past maintenance activities.Accidentally <br /> the bridge was completed in 2001. swallowing lead-impacted soil or very small lead containing <br /> paint chips,would be the major route of potential exposure at <br /> Characterization of Contamination the site. Harmful health effects from swallowing the lead <br /> Initial soil sampling and analysis results showed that lead- impacted soil and lead containing paint chips will depend upon <br /> impacted soils are present in the park area under and mauka the levels of lead in the soil and paint,the quantity of soil and <br /> of Kolekole Stream Bridge. Lead was found in soils at paint that were ingested, and the frequency for which the soil <br /> concentrations exceeding the 200 mg/kg lead screening action and paint were ingested. <br /> level established in Hawai`i for residential areas(also used for <br /> public parks)as well as the higher USEPA screening level for The stream banks will be included in the planned additional <br /> residential areas of 400 mg/kg. The average level of lead testing however elevated lead concentrations are not expected <br /> found in soils in the park was 465 mg/kg. Additional risk in the stream or adjacent rocky banks where flowing or rain <br /> evaluation is needed when lead in soil is above HDOH action storm-generated waters over the years would remove any fine <br /> levels and additional precautions are necessary to minimize soils along with very small paint chips. <br /> exposure as cumulative lead exposure has been shown to Response Actions <br /> adversely impact human health. Lead is especially harmful to <br /> children who accidentally eat small amounts of lead-impacted Through HDOT-Highways coordination with the HDOH <br /> soil or lead containing paint on a regular basis. Lead is more HEER Office, various initial response actions for the impacted <br />