Safety
Who is responsible for safety in the laboratory?
What is the Standard Methods name of the method we use for determining Turbidity in samples?
Nephelometric method
What two physical methods of treatment are used immediately after raw sewage enters the HARRF?
Screenings and grit removal.
What does the acronym TNI stand for?
The Nelac Institute
The HARRF is designed to treat a flow of _______MGD.
18
What order is the only safe way to combine acid and water?
Add acid to water.
How many milligrams of DO must be depleted and how many milligrams of DO must remain after 5 days of incubation for the BOD test?
2.0 mg/L depleted and 1.0 m/L remaining.
What type of treatment does the HARRF use to generate secondary effluent?
Activated sludge
The standards, policies, and instructions to establish a credible laboratory quality assurance program in a laboratory are kept in the ________________.
Quality Manual
The agency that generates our NPDES permits is called _______________.
What is the San Diego Regional Water Quality Control Board?
Name the three personal protective equipment items required while working with chemicals in the lab.
Eye goggle, gloves, lab coat.
Total Chlorine is the sum of what two forms of Chlorine?
Free Chlorine and Combined Chlorine.
What does RAS stand for?
Return Activated Sludge
To perform an MDL, you must analyze ________ portions of a sample over a minimum 3 day period.
Seven.
MFRO stands for what?
Membrane Filtration Reverse Osmosis
What class of fire extinguisher is in the laboratory?
ABC
Drinking water samples for Colilert must be received by the lab within ______hours after collection, and analyzed within ______hours after collection.
6 hours and 30 hours.
The average temperature of the digesters are kept at ________ degrees Farenheit.
98.0 degrees
When a mistake is made in transcribing data on a lab sheet, what four things must be done to legally correct it?
Cross it out in pen, write the correct number, initial it, and date it.
What type of ducks call the HARRF home?
Mallards
How long do you flush your eye with water if it has come in contact with a chemical in the lab?
15 minutes.
The methods for analysis that are approved for use on wastewater samples are found listed in what document?
40 CFR Part 136, Guidelines Establishing Test Procedures for the Analysis of Pollutants
Title 22 tertiary treated water goes through what two processes after secondary treatment?
Sand Filters and Chlorine Contact Chamber.
An _________ is used to demonstrate that the analyst is capable of performing analysis with acceptable precision, accuracy, sensitivity and specificity pertaining to that particular method.
IDC - Initial Demonstration of Capability
What class of Biosolids does the HARRF produce, A, B, or C?
Class B