NC0024945_report_19890418

North Carolina Division of Environmental Management
Water Quality Section / Technical Services Branch
Intensive Survey Unit
18 April 1989
Memorandum
To: Trevor Clements
Thru: Jay Sauberf,
From: Howard Bryant /VIKA
Subject: CMUD Irwin Creek WWTP Longterm BOD Analysis
CMUD Irwin Creek WWTP NC0024945 Mecklenburg County
Receiving Stream: Irwin Creek Sub -basin: 030834
DAY BOD NH3-N TKN-N NOX-N TOTALN REPS
0
5 1 8.7
1 0 63.0
1 5 100.4
20 107.0
25 111.2
30 114.6
35 117.4
40 119.9
45 121.9
50 123.8
55 125.2
60 126.8
1 5.0
1 7.0
7.2
0.07
0.03
15.0
1 7.0
9.7
4.2
0.68
1.8
11.0
19.0
3.3 19.0
ZON-:. 1y5.9f I✓=.OU
NOx : 1?,3NPtp = 8a
C13°L•/g 3.4
16.0
19.0 9
21.0 8
23.0 7
6
6
22.0 6
5
5
5
5
5
Date Collected: 13/14 February 1989 (0900-0900)
Collected By: Ron Phelps
Cary Lab BOD-5: 12 mg/L Total Phosphorus: 0.70 mg/L
pH: 7.9 Sulfite test for chlorine: 3 drops/100 ml 100 % sample was seeded.
Range of BOD-5: 17.0 - 20.1 mg/L
Range of BOD-60: 123.6 - 130.8 mg/L
Test evaluation: good
cc: Central Files