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Mike.. In answer to your questions below: 1.0ur sampling was done at 4 locations within the Flint city water system on Tuesday, January 20th, between 10:40am for our first location and 3:40 pm for our last location. They were not the same sites used for Flint’s stage 2 DDBP monitoring. 2. | collected the samples after receiving instruction from our the independent certified testing lab we used. City certified operators did not collect or oversee the collection of our samples. 3. Sampling protocol: Run tap for 1-2 minutes. Samples were collected in a 40 ml VOA vial with sodium thiosulfate as a dechlorinating agent. Samples were collected with zero head space. VOC's used 40 ml VOA with ascorbic acid then adding hydrochloric acid with zero head space. All other tests wereMDPE containers except bacteria samples were in specific BACT! containers. 4. Lab used was Water Tech in Howell, |ID#0023 5. Method used is EPA524.2 (see above for sampling unit) or as specified on the report. Please let me know if you can comment on our results. | would only provide them to you with the agreement that keep them completely confidential and not release them to anyone before our embargo time of Friday, January 30" at 7 AM. Larry

Larry, We are willing to review the TTHM results of all samples collected within the Flint water system for a limited assessment of the data. Please include the follawing information with the sample results: 1. Sampling location (time ~ was Flint’s Stage 2 DDBP monitoring plan sites used? 2. Who collected the samples? Did city certified operators collect the samples or oversee the sample collection? . Sampling protocol (method) 4. Certified lab used 5. Lab method used & proper sampling unit xxxEND_PAGE:deq16_b5_0892_4900_3689 Michael Prysby, PLE. Mstrict Engineer Office of Drinking Water and Municipal Assistance 517 290-8817

Date: Tuesday, January 27, 2015 10:00:12 AM Larry, We are willing to review the TTHM results of all samples collected within the Flint water system for a limited assessment of the data. Please include the following information with the sample results: 1. Sampling location /time — was Flint’s Stage 2 DDBP monitoring plan sites used? 2. Who collected the samples? Did city certified operators collect the samples or oversee the sample collection? 3. Sampling protocol (method) 4. Certified lab used 5. Lab method used & proper sampling unit Michael Prysby, P.E. District Engineer Office of Drinking Water and Municipal Assistance 517 290-8817

Date: Tuesday, January 27, 2015 10:00:13 AM Larry, We are willing to review the TTHM results of all samples collected within the Flint water system for a limited assessment of the data. Please include the following information with the sample results: 1. Sampling location /time — was Flint’s Stage 2 DDBP monitoring plan sites used? 2. Who collected the samples? Did city certified operators collect the samples or oversee the sample collection? 3. Sampling protocol (method) 4. Certified lab used 5. Lab method used & proper sampling unit Michael Prysby, P.E. District Engineer Office of Drinking Water and Municipal Assistance 517 290-8817

Mike, We have just completed our own independent testing of multiple sites within the Flint water system and wonder if you’d be willing to look them over and give us your professional opinion. | could email you the reports from the testing lab we used. Larry Elliott ABC12 News (810)257-2805 office xxxEND_PAGE:deq16_b5_0892_4900_3690