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1336-21-6 95-50-1 100-41-4 7553-56-2 8030-30-6 7723-14-0 108-88-3 1330-20-7 60-29-7 299-42-3 7647-01-0 67-63-0 7439-93-2 67-56-1 78-93-3 1310-73-2 7664-93-9 7664-41-7 67-64-1 64-17-5

File Name: 1336-21-6_95-50-1_100-41-4_7553-56-2_8030-30-6_7723-14-0_108-88-3.asp

                                   Washington State Department of Ecology
Guidelines for Characterizing Septic Tank Wastes at CDL Sites
December 27, 2001

This guideline is intended to provide a summary of recommended steps that will lead to safe, legal and environmentally
protective management of wastes generated by cleaning out septic tanks at clandestine drug lab sites.


1. When removed from septic tanks, the contents are solid wastes subject to "designation" as dangerous wastes. Clandestine
lab wastes are not considered household hazardous waste.

2. The most common types of contaminants expected to be discharged into septic systems from clan labs are:
- Solvents (e.g., toluene, xylene, alcohol, acetone),
- Petroleum distillates (e.g., paint thinner, white gas), and
- Liquid corrosives (e.g., sulphuric acid, muriatic acid, sodium hydroxide solutions), and mixtures with residual
ephedrine, methamphetamine, iodine or red phosphorus.

3. Composite samples of tank contents are considered representative of the waste "as generated". Sampling of distinct phases
(scum, floating, clear and sludge) may also be acceptable for the purpose of designating individual phases. (Ref. WAC
173-303-150).

4. Septic tank wastes will typically not qualify to be designated as listed hazardous wastes (P, U, or F-listed) because the
solvents have been used and there is too much uncertainty about the types, sources and original concentrations of solvents
discovered in septic tanks. (Ref. WAC 173-303-080 through ?83).

5. Based upon available sampling information, septic tank wastes will typically not designate as ignitable hazardous waste.
(Ref. WAC 173-303-090(5)). However, under severe conditions, there may be a floating layer of solvents in sufficiently
high concentrations that it represents a fire or explosive hazard and may designate as ignitable hazardous waste if that
layer were removed and managed as a separate liquid phase.

6. Septic tanks will typically not designate as dangerous waste for toxicity or persistence (ref. WAC 173-303-100). See
Attachment 2, Toxicity of Common Drug Lab Chemicals, 5/31/01.

7. Soils and groundwater suspected of being contaminated by clan lab wastes must be managed under Ecology MTCA
(Model Toxics Control Act) regulations (Chapter 173-340 WAC) and programs.



Recommended Management Practices

R1. Continue current practice of local health districts re: required sampling of septic tanks at clan lab sites. Sampling is
required when there are any reasons for concern about dumping of drug lab chemicals into a septic system. Reasons
for concerns may include, but are not limited to:
- Witness statements;
- Stained or etched sinks, bathtubs, toilets;
- Chemical odors coming from the septic system plumbing or tank; and
- Visual observations of unusual conditions within the septic tank ("dead tank"); or, stressed or dead
vegetation in a drain field.

R2. It is appropriate to sample and analyze septic tanks for the most common types of solvents using SW-846 method
8260 for volatile organic compounds (VOC). [Current costs range from $175-200 per sample.]

R3. Samples must be representative of the wastes found in the septic tank. Normal sampling procedures will include the
use of drum thieves, sludge judges or equivalent equipment.

Washington State Department of Ecology
Hazardous Waste and Toxic Reduction Program
December 27, 2001
2



R4. On a case-by-case basis, sampling and analysis of individual layers within a septic tank may be acceptable.

R5. If a composite sample exceeds 10,000 ppm VOC it may designate as a dangerous waste and be subject to regulation
under Washington Dangerous Waste Regulations (Chapter 173-303 WAC). 10,000 ppm represents the concentration
it would take for common drug lab solvents in a septic tank to designate as toxic dangerous waste (WT02).

If tank contents are determined to exceed 10,000 ppm, the appropriate steps for waste management and disposal
include:

a. Determine if the total waste sample is ignitable and manage as dangerous waste (D001).
b. Identify the types of VOC present and whether the mixture designates as DW at 10,000 ppm (contact Ecology for
assistance in designation).
c. If mixture is DW because it exceeds 10,000 ppm,
- Manage the whole tank contents as DW (work with hazardous waste contractor or Ecology) or
alternatively;
- If a phase separated liquid, manage the floating (solvent) phase separately as a dangerous waste (D001
would be most likely waste code).
- Re-test residuals and designate.

R6. If a composite sample exceeds 1000 ppm VOC it may be appropriate to direct that the tank be aerated to further
reduce the levels of VOC. Such treatment will be subject to approval by local air pollution control agencies. 1000
ppm represents 1/10th of the concentration of common drug lab solvents necessary to designate as Washington State
dangerous waste.

R7. If a composite sample is below 1000 ppm VOC it may be managed for disposal at a septage treatment facility, sewage
treatment plant or hazardous waste management contractor/facility, subject to acceptance by the facility operator.

R8. Local Health Districts in Ecology's Southwest Region may send lab analysis data to Leslie Morris, Ecology
HWTR/SWRO. Leslie will compile drug lab/septic tank data and communication any significant findings back to
state and local officials. All other local health districts should contact Ecology's HWTR representative in their region.

Ecology's HWTR Program will provide technical and regulatory assistance to local health districts regarding waste designation
and management.




Washington State Department of Ecology
Hazardous Waste and Toxics Reduction Program
December 27, 2001
3

Attachment 2. ACUTE TOXICITY OF COMMON DRUG LAB WASTES
J. Sachet 5/31/01

A. TOXIC CATEGORY: Data is from two sources, the NIOSH Registry of Toxic Effects of Chemical Substances (RTECS), and the EPA Aquatic
Information Retrieval database (AQUIRE). Washington Dangerous Waste Regulations, WAC 173-303-100, say NIOSH RTECS data is the
authority. Use most conservative # within RTECS. If RTECS conflicts with other sources, use RTECS. Testing is always an option.

Notes: Assume LD50 tests were performed on 100% pure chemicals or active ingredients. Washington State Dangerous Waste Toxic Criteria
are X, A, B, C, or D. Recommendations for designation, unless otherwise noted, use the most conservative (highest) toxicity category reported.
None of the clandestine drug lab source chemicals identified in septic tanks were classified as Toxic category X through A chemicals.

Chemical listed below are identified by the toxicity category of "B", "C" or "D", or "None", where no category could be established.
"No data" means no results were reported in AQUIRE or RTECS for the chemical or compound.
"No comp data" means results were reported but not in a manner that is comparable with dangerous waste criteria, therefore, conclusions about
waste designation could not be reached on the basis of this information source.

Chemical/Waste Applicable LD50/Tests DW Toxicity Dangerous Comments
(CAS #) Category Waste Code at
100%
Concentration
Ammonia, Aqueous AQUIRE (salmon, 4 day) 7 ppm C WT02
(1336-21-6) RTECS (oral rat) 350 mg / kg C
Benzene, 1,2-dichloro AQUIRE (salmon, 4 day) 1.52 mg / L C WT02 Compound detected by Thurston Co. in a
(95-50-1) RTECS (oral rat) 500 mg / kg C drug lab septic tank
(inhalation rat 821 ppm / 7H)
(dermal rabbit >10 gm / kg)
Ethyl benzene AQUIRE (salmon, 4 day) 4.20 mg / L C WT02 Compound detected by Thurston.
(100-41-4) RTECS (oral rat) 3500 mg / kg C Co. in a drug lab septic tank.
(inhalation rat 4000 ppm / 4H)
(dermal rabbit 17800 礚 / kg)
Iodine AQUIRE (trout, 4 day) <10 mg / L C WT02
(7553-56-2) RTECS (oral rat) 14000 mg / kg or 14 gm /kg None
(inhalation rat 137 ppm / 1H)
Naphtha - petroleum AQUIRE (trout, 4 day) 8.8 mg / kg C WT02
distillates (8030-30-6) RTECS (oral rat) >5000 mg / kg or >5 gm / kg None
(inhalation rat 1600 ppm / 6H)
(dermal rabbit >3 gm / kg)
Phosphorus, red AQUIRE (trout, 4 day) <1 mg / kg B WT01? Oral rat LD50 is on white phosphorus
(7723-14-0) RTECS (oral rat) 3030 礸 / kg or 3.03 mg / kg A WT02 Category C Recommended.



Washington State Department of Ecology
Hazardous Waste and Toxics Reduction Program
December 27, 2001
4
Chemical/Waste Applicable LD50/Tests DW Toxicity Dangerous Comments
(CAS #) Category Waste Code at
100%
Concentration
Toluene AQUIRE (salmon, 4 day) 5.5 mg / kg C WT02
(108-88-3) RTECS (oral rat) 636 mg/kg D
(inhalation rat 49 gm / m3 / 4H)
(dermal rabbit >14100 礚 / kg)
Xylene AQUIRE (trout, 4 day) 8.2 mg / kg C WT02
(1330-20-7) RTECS (oral rat) 4300 ppm D
(inhalation rat 5000 ppm / 4H)
(dermal rabbit >1700 mg / kg)
Ether AQUIRE (no data) None WT02
(60-29-7) RTECS (oral rat) 1215 mg/kg D
(inhalation rat) 32000 ppm / 4H
(dermal rabbi)t >20 mL / kg
Ephedrine AQUIRE (no data) None WT02
(299-42-3) RTECS (oral rat) 600 mg/kg D
Hydrochloric acid AQUIRE (no comp data) None WT02
(7647-01-0) RTECS (inhalation rat) 3124 ppm/1H None
(Oral rabbit) 900 mg/kg D
Isopropyl alcohol AQUIRE (trout, 4 day) 13 mg/kg D WT02
(67-63-0) RTECS (oral rat) 5045 mg/kg None
(dermal rabbit) 12800 mg/kg D
Lithium AQUIRE (no data) None WT02
(7439-93-2) RTECS (no comp data) None
Lithium battery SAFT America MSDS (oral rat) 2730 mg/kg D
Methyl alcohol AQUIRE (trout, 4 day) 19,000 mg/L None WT02
(67-56-1) RTECS (dermal rabbit) 15,800 mg/kg D
Methyl ethyl ketone AQUIRE (no data) None WT02
(78-93-3) RTECS (oral rat) 2737 mg/kg D
(dermal rabbit) 6480 mg / kg
Sodium hydroxide AQUIRE (no comp data) None None RTECS (oral rabbit) 500 mg/kg suggest D
(1310-73-2) RTECS (no comp data) WT02 recommended
Sulfuric acid AQUIRE (no comp data) None WT02
(7664-93-9) RTECS (oral rat) 2140 mg/kg D
Ammonia, anhydrous AQUIRE (no data) None None Inhalation hazard per USDOT
(7664-41-7) RTECS (inhalation rat) 2000 ppm/4H None WT02 recommended
Hydriotic acid AQUIRE (no data) None None WT02 recommended
(No CAS#) RTECS (no data) None



Washington State Department of Ecology
Hazardous Waste and Toxics Reduction Program
December 27, 2001
5
Chemical/Waste Applicable LD50/Tests DW Toxicity Dangerous Comments
(CAS #) Category Waste Code at
100%
Concentration
Acetone AQUIRE (trout, 4 day) >4000 mg/L None None
(67-64-1) RTECS (oral rat) 5800mg/kg None
(dermal rabbit) 20 mL / kg
Ethyl alcohol AQUIRE (trout, 4 day) 137 mmol/kg None None
(64-17-5) RTECS (oral rat) 7060 mg/kg None
(dermal rabbit) 20 gm / kg




Washington State Department of Ecology
Hazardous Waste and Toxics Reduction Program
December 27, 2001
6
B. EXAMPLES:

Use the Equivalent Concentration Formula from WAC 173-303-100(5): EC (%) = X% + A% + B% + C% + D%
1 10 100 1000 10000

Example 1: Mixture of solvents discharged to septic tank. Tank sample results are

Dichlorobenzene (toxic category C) 600 礸 / L = 0.6 mg / L = .00006 %
Toluene (toxic category C) 1800 礸 / L = 1.8 mg / L = .00018 %
Ethyl benzene (toxic category C) 330 礸 / L = 0.33 mg / L = .000033 %
Xylene (toxic category C) 1800 礸 / L = 1.8 mg / L = .00018 %
Sum .000453 %

EC (%) = .000453 = .000000453 %, which is less than .001%; therefore it is not a dangerous waste.
1000

Example 2: Mixture of 50% mixture of iodine in water (note: this is hypothetical since iodine crystals are not readily soluble in water)

Iodine (toxic category C) 500,000 ppm = 50%

EC (%) = 50% = .05%, which is greater than .001% and less than 1.0%; therefore the mixture is DW, WT02.
1000

Reverse Calculation of DW Designation Levels: How much of a particular toxic category substance (one or a mixture of several) would it take
for septic tank contents to book designate as state-only toxic dangerous waste? Use the equivalent concentration formula for each toxic category.
Calculate the unknown percentage of a substance that it would take to equal or exceed the designation threshold of .001%.

Solution for Category B toxins Solution for Category C toxins Solution for Category D toxins
The designation threshold is .001% The designation threshold is .001% The designation threshold is .001

X = .001% X = .001% X = .001%
100 1000 10,000

X = (.001% X 100). X = (.001% X 1000). X = (.001% times 10,000)

X = 0.1% X = 1% X = 10%

You would have to have at least 0.1% of a You would have to have at least 1% of a You would have to have at least 10% of a
toxic category B substance to designate as toxic category C substance to designate as toxic category D substance before it would
WT02 dangerous waste. This means at least WT02 dangerous waste. This means at least designate as WT02 dangerous waste. This
means at least 100,000 ppm or 100 gallons
1,000 ppm or 1 gallon in a 1000-gallon 10,000 ppm or 10 gallons in a 1000-gallon
septic tank. septic tank. in a 1000-gallon septic tank.

Washington State Department of Ecology
Hazardous Waste and Toxics Reduction Program
December 27, 2001

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