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 §465, sub-§4, 1[8, 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, 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. In addition, in order to provide additional protection for growth of indigenous fish, dischargers that were issued final discharge licenses or water quality certificates prior to March 16, 2004 that are based on a 6.5 parts per million dissolved oxygen criterion must continue to be licensed using a temperature of 24 degrees centigrade or the ambient temperature of the water body, whichever is lower. Final discharge licenses and water quality Page l-LR280l(2) COMMITTEE AMENDMENT
Maine Legislature, Session 121, LD 1899
Committee Amendment CA_A_S467 (Senate)
Amends: 38 MRSA §465

COMMITTEE AMENDMENT "A, 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 §465, sub-§4, 1[8, 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, 
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. 
In addition, in order to provide additional 
protection for growth of indigenous fish, dischargers that 
were 
issued 
final 
discharge 
licenses 
or 
water 
quality 
certificates prior to March 16, 2004 that are based on a 6.5 
parts per million dissolved oxygen criterion must continue 
to be licensed using a temperature of 24 degrees centigrade 
or the ambient temperature of the water body, whichever is 
lower. 
Final 
discharge 
licenses 
and 
water 
quality 
Page l-LR280l(2) 
COMMITTEE AMENDMENT 
COMMITTEE AMENDMENT ,A .. to S.P. 743, L.D. 1899 
certificates not based on a 6.5 parts per million dissolved 
oxygen criterion prior to March 16, 2004 must be based on a 
6.5 parts per million dissolved 
oxygen criterion at 
a 
temperature 
of 
degrees 
centigrade 
or 
the 
ambient 
temperqture of the water body, whichever is lower. 
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 
per 
milliliters 
or 
an 
instantaneous level of 949 per 100 milliliters. 
The board 
shall 
p!'eHl\iJ:~aee ~ 
rules governing the procedute 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 
majority 
report. 
The 
amendment 
provides that dischargers to Class C waters that were issued 
final discharge licenses or water quality certificates prior to 
March 
16, 
2004 
that are based 
on 
a 
6.5 parts per million 
dissolved oxygen criterion must continue to be licensed using a 
temperature of 24 degrees centigrade or the ambient temperature 
of the water body, whichever is lower. 
Final discharge licenses 
and water quality certificates that were not previously based on 
a 6.5 parts per million dissolved oxygen criterion must, after 
March 15, 2004, be based on a 6.5 parts per million dissolved 
oxygen criterion at a temperature of 22 degrees centigrade or the 
ambient temperature of the water body, whichever is lower. 
COMMITTEE AMENDMENT