NC0023981_report_19870814

North Carolina Division Of Environmental Management
Water Quality Section / Technical Services Branch
Intensive Survey Unit
14 August 1987
MEMORANDUM
To: Trevor Clements
Thru: Jay Sauber 4. --
From: Howard Bryant H.A14.
Subject: Lenoir's Lower Creek WWTP BOD-Longterm
Date Collected: 6 May 1987 Setup: 7 May 1987
Collector: M. Payne
Sample Description
day BOD Replicates NH3 TKN NOX TOT N
Lenoir Lower Creek is 13.0 17.0 0.12 18.1
Grab 5- 18.5 5
6 May 1987 7 27.0 5 15.0 21.0 1.1 22.1
NBOD = 13 x 4.57 = 59 11 51.0 4
CBOD = 127 - 59 = 68 13 77.8 4
15 95.2 4 0.35 4.9 15.0 19.9
20 101.2 3
24 104.5 3
30 108.5 3 0.05 3.1 17.0 20.1
40 113.3 2 0.04 3.4 15.0 18.4
50 117.5 1
60 120.9 1
70 123.2 1
80 125.4 1
90 126.9 1
Comments:
Cary Lab BOD-5 = 13.0
Sample was dechlorinated- 2 drops thio
pH - 7.05
Test evaluation - Good