West Honolulu Watershed Study - Final Report - Prepared for

West Honolulu Watershed Study FINAL REPORT
Streams and Near-Shore Waters: Revised EPA 303(d) Impaired Water Bodies List:
Section 303(d) of the Clean Water Act requires that states periodically submit EPA lists of
waters for which existing technology-based controls are not stringent enough to attain or
maintain state water quality standards and for which total maximum daily loads (TMDLs)
must be prepared. The State of Hawaiÿi submitted its most recent Section 303(d) list in 1998
and the EPA approved that list on August 13, 1998. However, on September 5, 2001, in
Hihiwai Stream Restoration Coalition et al. v. Christine Todd Whitman, the EPA's approval of
Hawaiÿi's 1998 list was ruled to be in error. The EPA was ordered by the Federal District
Court to reconsider the 1998 list. In its November 15 reconsideration decision, the EPA
approved Hawaiÿi's listing of 19 water bodies and associated priority rankings. This revised
list included 92 additional water quality limited segments as well as additional pollutants for
15 of the 19 waters already listed by the State. The EPA identified additional water bodies and
pollutants for inclusion on the 1998 list. The following water bodies in the West Honolulu
Watershed project area are as follows:
Impaired Water Bodies in the West Honolulu Watershed
Stream Pollutants Basis for Listing Priority
Moanalua Stream nutrients, turbidity, trash visual assessment M
Kalihi Stream nutrients, turbidity, trash visual assessment M
Nu‘uanu Stream nutrients, trash visual assessment M
Salt Lake turbidity, trash visual assessment M
Honolulu Harbor and nutrients, pathogens, metals, prior listing L
Shore Areas turbidity, suspended solids
Nearshore waters to
30' from 1 mile NW
of Honolulu Harbor-
Sand Island Channel to
Waikiki Beach
Sand Island Point #2 turbidity nitrogen numeric assessment L
Sand Island Point #3 turbidity nitrogen numeric assessment L
Ke‘ehi Lagoon nutrients, turbidity, numeric assessment L
Lagoon and near-shore suspended solids
waters to 30' from
Lagoon mouth to Pearl
Harbor
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