HomeMy WebLinkAboutLAKE RIDGE TERRACE BLK 2 LT 15A
DEPT. OF ENVIRONMENTAL CONSERVATION
TONYKNOWLE~ GOVERNOR
ANCHORAGEANESTERN PUBIC SERVICE OFFICE
555 CORDOVA STREET
ANCHORAGE, ALASKA 99501
(907) 269-7505
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
P 388 516 621
November 14, 1996
Ms. Rhea Johnstone
14939 West Lake Ridge Drive
Eagle River, AK 99577
RE: Lots 15A and 16A Lake Ridge Terrace Subdivision - 14939 Lake Ridge Drive.
Class "C" PWSID no. 218205. Notice of Violation: Maximum Contaminant
Level (MCL) Violation for Nitrate in Drinking Water.
Dear Ms. Johnstone:
This letter is in response to the laboratory analysis received in this office August 15,
1996, for a water sample submitted to Commercial Testing and Engineering on August
2, 1996, which exceeded the maximum contaminant level (MCL) allowed for nitrate (10
mg/I) as listed under the State Drinking Water Regulations (18 AAC 80.070) for
inorganic chemical contaminants. The sample which was recently analyzed this past
August, reported a value of 14.5 mg/I for nitrate, this is the third consecutive quarter
that testing for nitrates has exceeded the MCL for this particular contaminant. A review
of the information on file in this office indicates that if the nitrate level continues to
increase, treatment to reduce the nitrate level or an alternative source of drinking water
should be examined. The Department requests a response from you within 15 days of
receipt of this letter to further discuss possible options for your water system.
As a precaution, the Department recommends that you notify users of this public water
system with a general health advisory stating the health effects of nitrate. The following
information was provided to you in an earlier letter: Nitrate generally is not considered
toxic to adults and children over the age of six months. However, nitrate has been
associated with a potentially fatal disease of infants called methemoglobinemia, or "blue
baby" disease. In the digestive systemof very young children, nitrate converts to nitrite
which can pass though the intestinal wall into the blood stream. In the bloodstream it
combines with hemoglobin and interferes with the ability of the blood to carry oxygen.
Breast-fed infants of mothers who drink water high in nitrate may also be affected.
Ms. Rhea Johnstone 2 November 14, 1996
The Department looks forward to your cooperation in resolving the above problem. If
there are any questions regarding any of the above items, please do not hesitate to call.
MLU/ph
CC;
Sincerely,
Michael Lu, E.I.T.
Environmental Engineer
Jim Cross, DHHS/On-Site Services