Weitzler, Ellen 

From: 

Sent: 

To: 

Subject: 

Attachments: 

Hi Ellen, 

Kavanah, Brian W <Brian.W.Kavanah@maine.gov> 

Monday, July 22, 2013 5:12PM 

Weitzler, Ellen; Margerum, Mark T 

RE: adopted revision of phenol for consumption of water+ organism 

phenol calculation:pdf 

I looked through Bob's rulemaking files and found this. Page 2 has his 

calculations. Please let me know if this clarifies the issue for you. 

Thanks. 

From: Weitzler, Ellen [mailto:Weitzler.EIIen@epa.gov] 

sent: Monday, July 22, 2013 9:52AM 

To: Margerum, Mark T 

Cc: Kavanah, Brian W 

Subject: adopted revision of phenol for consumption of water + organism 

Hi Mark, 

I'm working on the approval letter for acrolein and phenol in state waters. 

Using the EPA methodologies and Maine's fish consumption rate of 32.4 gm/day, I was able to calculate human health 

criteria for acrolein that agreed with Maine's adopted revisions to 3.9 ug/L (for consumption of water+ organisms) and 

5.0 (for consumption of organisms only). I was also able to calculate the human health criteria for phenol for 

consumption of organisms only that agreed with Maine's adopted revision to 462,963 ug/L. 

However, I was not able to derive Maine's adopted revision of the phenol criteria for consumption of water+ organisms 

to 10,514 ug/L. 

Using the following criteria derivation equation for Ambient Water Quality Criteria (AWQC) 

AWQC = RfD x RSC x [ BW/{DI+ {FIx BAF))] (see parameter definitions and values below) 

leads to a criteria of 10,267 ug/L. 

Please let me know if you have made any other assumptions regarding the parameters below or any other revision to 

the methodology to account for the difference. 

Thanks 

Ellen 

Human Health Criteria for Phenol for 

consumption of Water and Organisms 

1 
RfD (Reference Dose) in mg/kg-day 

RSC (Relative Source Contribution to 

account for other sources of exposure) as a 

%of total exposure 

BW (Human Body Weight for average 

adult) in kg 

Dl (Drinking Water Intake for average 

adult) in L/day 

Fl (fish Intake) in kg/day 

BAF (bioaccumulation Factor) in l/kg (or 

BCF if no BAF) 

AWQCin mg/L 

Ellen Weitzler, P.E. 

Water Quality Standards Coordinator 

USEPA-New England Region 1 

5 Post Office Square, Suite 100 

Boston, MA 02109-3912 

Tel 617-918-1582 

0.3 

1 

70 

2 

0.0324 

1.4 

10,267 

2 
2000 Methodology Calculations 

Linear Approach 

Using cancer potency, ql*: 

For consumption of water and organisms: 

(1 o·6tq t *) • 10 kg • 1 ooo iJ.g{mg 

A WQC [IJ.g/L] = ------- ----------------------

(2 Ud + (0.0 175 kg/d • BCP [UkgJ)) 

For consumption of organisms only: 

. . {10~/ql ) • 70 kg • 1000 f.Lg/mg 

A WQC [!,Lg/L] = 

0.0175 kg/d • BCF [Ukg) 

Using Reference Dose: 

For consumption of water and organisms: 

AWQC [f.Lg/L] = [R1D [mglkg-d] • RSC * (70 kg/ 2 Ud+(0.0175 kgfd • BCF [Ukg])) • 1000 flgfmg 

or (- RSC) 

For consumption of organisms only: 

A WQC [f.Lg/L] = [R1D [mglkg-d] • RSC • (70 kg! (0.0 175 kg/d • BCF [Ukg]))] • 1000 f,lg/mg 

( -RSC) . 

Nonlinear Approach (Presented for infOrmation only- no criteria in matrix based on nonlinear approach currently) 

For consumption of water and organisms: 

AWQC [ug/L] = PODIUF • RSC • (BW/DI + (FI e BCF) 

For consumption of organisms only: 

AWQC fug!Ll = PODIUF • RSC • * (BW/(FI •BCF) 

A WQC = Ambient w~~ter quality criteria= national recommended water quality criteria 

ql* =Cancer potency fartor kg-dfmg or per mglkg-da:y 

RSD =Risk specific dose 10 .. /ql * mgllcg-day 

RID = Reference dose mglkg-d 

DI = Drinking water intake 2 Uday 

BW =Human body weight 70 kg 

Fl =Fish intake 0.0175 kg/day 

BCF = Bi~ncentration factor l1kg 

UF"" Uncertainty factor (unitless) 

RSC = Relative source contribution (percentage of subtraction) 

POD= Point of departure mglkg-day 

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