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GOVERNMENT RECORDS SEARCHED / DATA CURRENCY TRACKING Date of Government Version:06/19/2007 Source: State Water Resources Control Board Date Data Arrived at EDR:06/20/2007 Telephone: 916-341-5227 Date Made Active in Reports:06/29/2007 Last EDR Contact:05/20/2015 Number of Days to Update:9 Next Scheduled EDR Contact:09/07/2015 Data Release Frequency:Quarterly WIP: Well Investigation Program Case List Well Investigation Program case in the San Gabriel and San Fernando Valley area. Date of Government Version:07/03/2009 Source: Los Angeles Water Quality Control Board Date Data Arrived at EDR:07/21/2009 Telephone: 213-576-6726 Date Made Active in Reports:08/03/2009 Last EDR Contact:06/22/2015 Number of Days to Update: 13 Next Scheduled EDR Contact: 10/12/2015 Data Release Frequency:Varies EDR HIGH RISK HISTORICAL RECORDS EDR Exclusive Records EDR MGP: EDR Proprietary Manufactured Gas Plants The EDR Proprietary Manufactured Gas Plant Database includes records of coal gas plants(manufactured gas plants) compiled by EDR's researchers.Manufactured gas sites were used in the United States from the 1800's to 1950's to produce a gas that could be distributed and used as fuel.These plants used whale oil,rosin,coal,or a mixture of coal,oil,and water that also produced a significant amount of waste.Many of the byproducts of the gas production, such as coal tar(oily waste containing volatile and non-volatile chemicals),sludges,oils and other compounds are potentially hazardous to human health and the environment.The byproduct from this process was frequently disposed of directly at the plant site and can remain or spread slowly,serving as a continuous source of soil and groundwater contamination. Date of Government Version:N/A Source: EDR, Inc. Date Data Arrived at EDR:N/A Telephone: N/A Date Made Active in Reports:N/A Last EDR Contact:N/A Number of Days to Update:N/A Next Scheduled EDR Contact:N/A Data Release Frequency: No Update Planned EDR US Hist Auto Stat: EDR Exclusive Historic Gas Stations EDR has searched selected national collections of business directories and has collected listings of potential gas station/filling station/service station sites that were available to EDR researchers.EDR's review was limited to those categories of sources that might,in EDR's opinion,include gas station/filling station/service station establishments.The categories reviewed included,but were not limited to gas,gas station,gasoline station, - filling station,auto,automobile repair,auto service station,service station,etc.This database falls within a category of information EDR classifies as"High Risk Historical Records",or HRHR.EDR's HRHR effort presents unique and sometimes proprietary data about past sites and operations that typically create environmental concerns, but may not show up in current government records searches. Date of Government Version:N/A Source: EDR, Inc. Date Data Arrived at EDR:N/A Telephone: N/A Date Made Active in Reports:N/A Last EDR Contact: N/A Number of Days to Update:N/A Next Scheduled EDR Contact:N/A Data Release Frequency:Varies EDR US Hist Cleaners: EDR Exclusive Historic Dry Cleaners EDR has searched selected national collections of business directories and has collected listings of potential dry cleaner sites that were available to EDR researchers. EDR's review was limited to those categories of sources that might,in EDR's opinion,include dry cleaning establishments.The categories reviewed included,but were not limited to dry cleaners,cleaners,laundry,laundromat,cleaning/laundry,wash&dry etc.This database falls within a category of information EDR classifies as"High Risk Historical Records",or HRHR.EDR's HRHR effort presents unique and sometimes proprietary data about past sites and operations that typically create environmental concerns,but may not show up in current government records searches. TC4420533.2s Page GR-28