An Act To Amend the Dissolved Oxygen Standard for Class C Waters Further amend the bill by striking out everything after the enacting clause and before the summary and inserting in its place the following: Sec. 1. 38 MRSA §46S, sub-§4, ,B, as affected by PL 1989, c. 890, Pt. A, §40 and amended by Pt. B, §63, is further amended to read: B. The dissolved oxygen content of Class C water may be not less than parts per million or 60% of saturation, whichever is higher, and not less than 6,5 parts per million as a 3D-day average whenever the daily water temperature is equal to or less than 24 degrees centigrade or the ambient temperature of the water body, whichever is lower, except that in identified salmonid spawning areas where water quality is sufficient to ensure spawning, egg incubation and survival of early life stages, that water quality sufficient for these purposes must be maintained. Between May 15th and September 30th, the number of Escherichia coli bacteria of human origin in these waters may not exceed a geometric mean of 142 per 100 milliliters or an instantaneous level of 949 per 100 milliliters. The board shall p~9mQ~~a~e ~ rules Page 1-LR2801(3) COMMITTEE AMENDMENT
Maine Legislature, Session 121, LD 1899
Committee Amendment CA_B_S468 (Senate)
Amends: 38 MRSA §46

MAINE STATE LEGISLATURE 
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Reproduced from scanned originals with text recognition applied 
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ttr:. 
"--,. 
L.D. 1899 
DATE: 
(Filing No. s-Ll~~ 
NATURAL RESOURCES 
Reported by: 
MINORITY 
Reproduced and distributed under the direction of the Secretary 
of the Senate. 
SENATE 
1218T LEGISLATURE 
COMMITTEE AMENDMENT 13" to S.P. 743, L.D. 1899, Bill, "An 
Act To 
Amend the Dissolved Oxygen Standard and the Bacteria 
Standard for Class C Waters" 
Amend the bill by striking out the title and substituting 
the following: 
'An Act To Amend the Dissolved Oxygen Standard for Class C Waters' 
Further amend the bill by striking out everything after the 
enacting clause and before the summary and inserting in its place 
the following: 
'Sec. 1. 38 MRSA §46S, sub-§4, ,B, as affected by PL 1989, c. 
890, Pt. A, §40 and amended by Pt. B, §63, is further amended to 
read: 
B. 
The dissolved oxygen content of Class C water may be not 
less 
than 
parts 
per 
million 
or 
60% 
of 
saturation, 
whichever is higher, and not less than 6,5 parts per million 
as a 3D-day average whenever the daily water temperature is 
equal to or less than 24 degrees centigrade or the ambient 
temperature of the water body, whichever is lower, except 
that in identified salmonid 
spawning 
areas 
where 
water 
quality is sufficient to ensure spawning, egg incubation and 
survival of early life stages, that water quality sufficient 
for these purposes must be maintained. 
Between May 15th and 
September 30th, the number of Escherichia coli bacteria of 
human origin in these waters may not exceed a geometric mean 
of 142 per 100 milliliters or an instantaneous level of 949 
per 100 milliliters. 
The board shall p~9mQ~~a~e ~ 
rules 
COMMITTEE AMENDMENT 
COMMITTEE AMENDMENT .(;) to S.P. 743, L.D. 1899 
governing the procedure for designation of spawning areas. 
Those rules must include provision for periodic review of 
designated spawning areas 
and consultation with affected 
persons prior to designation of a stretch of water as a 
spawning area.' 
SUMMARY 
This 
amendment 
is 
the 
minority 
report. 
The 
amendment 
requires all Class C waters to meet a 6.5 parts per million 
dissolved oxygen monthly average standard whenever 
the daily 
water temperature is equal to or less than 24 degrees centigrade 
or the ambient temperature of the water body, whichever is lower. 
COMMITTEE AMENDMENT