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    Reference: Note from (I1995055 - IBMMAIL) attached below

Hello everyone,

     Sorry for the re-posting of the attachments, but I wanted to ask for some
clarification (mostly for my own benefit).  I have absolutely no experience
with the types of chemicals used to develop photographs, but the dialogue in
the attached seems to indicate that they are somewhat hazardous (i.e. something
we don't want circulating in our water supply).  If this is true, then
wouldn't the act of mixing the solutions together and flushing them to the
sewer system simply shift the inherent pollution from one place to another
(i.e. from the home developer to the sewage system, possibly even the ground-
water, and ultimately to the sewage treatment plant)?  The hazardous chemicals
and resultant pollution will still need to "cleaned-up" a some later stage, and
so this approach does not seem consistent with the philosophy of Pollution
*Prevention* as I understand it.  If someone could please clarify this point,
I'd greatly appreciate it.  Thanks for your help.

Eric Masanet
Research Assistant - Manufacturing Group
Northwestern University
Evanston, IL

Design Engineer
Caterpillar Inc.
Aurora, IL
-------------------------------- ATTACHED NOTE --------------------------------

From: Santala@aol.com
Date: Tue, 7 Jan 1997 12:25:38 -0500
To: p2tech@great-lakes.net
Subject: Re: No Subject

In a message dated 97-01-07 09:19:16 EST, you write:

>>Does anyone have any P2 ideas or contacts for a resident here who wants to
>>add a dark room to his home? He's on a septic system.

>>I have quite a bit of info for larger photo processors, but many of the P2
>>treatment options (i.e., water recirculation and silver recovery) are
>>infeasible for his scale. Aside from silver (and perhaps hydroquinone?),
>>other typical photo chemicals should he be concerned with for a septic

>From: Chris Rust <crust@ioa.com>
>To: p2tech@great-lakes.net

>Subject: Re: Small photo developer
>I've operated a black & white darkroom in my home, which is serviced by a
>septic system, for nine years without any problems. I got the MSDS's for
>all commonly used chemicals from Kodak and there weren't any that couldn't
>be "flushed to the sewer with adequate rinse water". Good practice is to
>mix spent developer, stop bath, and fixer before discharging in order to
>neutralize the acidic and alkaline components. About the only thing I might
>worry about if I was also drinking from a nearby well is the use of
>selenium toner.
>* * * * * * * * * * * * * * * * * * * * * * * *
>Chris Rust, Waste Reduction Consultant
>310 Upper Laurel Dr., Hendersonville, NC 28739


ALLWAYS check with local authorities before making the decision. What's
legal/acceptable in one area may not be in another. Specifically, there may
be local problems/concerns that would prohibit the 'normal' mode of doing
things. (i.e., If there is a local problem with Se or Ag in groundwater, the
County may have regs prohibiting discharge to septic systems-at ANY

In my area, the County's Dept. of Environmental Health Services would handle
this type of thing. Probably the same for you, but could also be under the
Fire dept., and/or HAZMAT Programs division.

...just a thought.

Scott S. Santala, R.E.A.
Mesa Associates
Environmental Services
PO Box 1163
Nipomo, CA 93444
(805) 929-5565

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