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March 24, 1982

Roberts Exeter Road Epping , New Hampshire 03042

Dear Mr. & Mrs. Roberts:

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We have received copies from the United States Environmental Protec­tion Agency of the results from the analysis of salll'les from your former shallow drinking water supply well. The results indicate that the wel l water exceeds both the World Health Standard for long-tenn exposure (0. 2 micrograms per liter} and the Env1 ronmenta 1 Protection Agency SNARL (25 micrograms per liter) for polynuclear aromatic hydrocarbons . The SNARL0 is defined by the Environmental Protection Agency as "Suggested No Adverse Response Level" .

This office has consul ted Dr. John Horan, State Epidemiolo~ist, Divi­sion of Public Health Services, who recoomends, based on -the results pro­vided by the Environmental Protection Agency , that your shallow well not be used for a drinking water supply. It ts our understanding you no longer use the shal l ow well, and you have no plans to resume use i n the near future . Should you wish to reutilize this water supply, please con­tact this office so that additional water quality testing can be perfo rmed.

Shoul d you have any questions regardi ng the above, please feel f ree to contact thi s office .

Very trul y yours,

tO.-., f.~t_ Dan H. Al l en, P.E., Director Ground Water Permit Division

~~~b~r. Merr111 S. Hohman, EPA J Ms . Roxanna Wolfe, Health Officer, Epping , w/attached results Dr. John Horan, Conmun1cable Di sease Control Mr. Gerald F. Rooney, Citizens Task Force on Hazardous Uaste Mr. Roger Gauthier. Chairman , Board of Sel ectr.~en

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March 24, 1982

Mr. Howard A. Evans Exeter Road Epping, New Hampshire 03042

Dear Mr. Evans:

We have received copies from the United States Environmental Protec­tion Agency of the results from the analysis of samples from your drink­ing water supply well. Further analytical results for your shallow water supply will be forwarded to you as soon as they are availabl e from the Environmental Protection Agency.

0 For your deep well trichlorofluoromethane wu found at levels below 10 micrograms per l iter, which is very low. While the Environmental Protection Agency has a standard of 8 milligrams per liter for a seven­day exposure, no standard has been for-.arded for a 11fetir.~e exposure . Methylene chloride was found in this same sample at a level of 130 mi cro­grams per liter. This is lower than the EnvironMental Protection Agency draft lifetime exposure limit of 150 micrograms per l iter.

We have conferred with Or . John Horan, State Epidemiologist with the Division of Public Health Services . He indicates, and we concur, your water may not be suitable for dri nking at this time. We note that changing environmental conditions, such as the quantity of pollutant, amount of rainfall, and pollutant travel, may have varying affects on your well water quality. Additionally , the Environmental Protection Agency has not established a safe lifetime exposure limit for tr1chloro­fl uoromethane .

Please contact us or Or. Horan at 271-4477 if you have any questions regarding this matter.

Ve(l truly yours, .v-....fr. dt/L._ Dan H. Allen, P. E., Director Ground Water Pennit Division

~~~b~r . Merrill S. Hohman , EPAl Ms. Roxanna Wolfe, Health Officer, Epping, w/attached results Or. John Horan, Conrnunicable Disease Control Mr. Gerald F. Rooney, Citizens Task Force on Hazardous •saste Hr. Roger Gauthier, Chairman , Board of Selectmen Hr. Robert L. Wel don 1.: .'.~ 2 6 !~92

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