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Subject: Re: Farewell and coolant-related machine shop question 
Sender: owner-p2tech@great-lakes.net
Precedence: bulk
Reply-To: "Ralph +or Meg Cooper" <rmcooper@flash.net> 
List-Name: P2Tech

Brass frequently contains a small amount of lead, due to contamination in 
the zinc. Buying a lower lead brass may be a solution to consider.
Ralph E. Cooper, Ph.D. 
J.D. expected May 1999 
Case Western University School of Law
14139 Woodstream 
San Antonio, TX 78231 
210-479-5490 (4) 
-----Original Message----- 
From: Vincent R. Perelli <v_perelli@des.state.nh.us> 
To: p2tech@great-lakes.net <p2tech@great-lakes.net> 
Date: Wednesday, February 17, 1999 11:21 AM 
Subject: Farewell and coolant-related machine shop question

>Hi Folks, 
>It is with some sadness that I post my last question to P2 Tech, (at the 
>request of my Supervisor), as I am leaving the NH Pollution Prevention 
>Program to take the Senior Planner position in the Commissioner's Office. 
>After a great run of 10 years, I am leaving a program that I helped to 
>from scratch (along with Paul Lockwood) out of the early days of 
>Hazardous Waste Capacity Assurance (anyone remember working on 
>I've enjoyed working directly with many of you on, and off, this listserve. 
>I have also enjoyed some of the "electronic" relationships I've established 
>with a bunch of you. I have been nothing but impressed with the caliber 
>and depth of knowledge and experience of folks on this listserve (and in 
>the Technical Assistance Community). 
>On to bigger and not necessarily better things. We'll see.... Information 
>requests, P2 conference planning, on-site assessments, and outreach 
>literature are soon to be replaced with Strategic Planning, Performance 
>Partnership Agreements, State of the Environment Report, and a bunch 
>of workgroups, committees, and partnerships. 
>Finally --- the question -- 
>A machine company is sawing brass parts. Following the cutting 
>operation, the parts pass through two rinse tanks. The first rinse is 
>picking up lead and exceeding the 5 ppm limit for hazardous waste 
>determination. Since the rinse is tap water (I told him to check pH), the 
>culprit appears to be the cutting fluid ("Valcool VNT 800" from Cincinnati 
>Milicron). They can't change the brass formulation but could change the 
>coolant. The owner says the longer the parts sit in the rinse water, the 
>higher the lead level. Has anyone heard of a similar problem? Does 
>anyone know of a good, non-aggressive coolant? Are there other 
>possible sources of the lead? 
>Thanks everyone. Keep up the great work that you all do. I'm going to 
>make sure that I maintain the P2 ethic in my new position. Please keep in 
>touch and I'll find opportunities for the same. 
>Vincent Perelli 
>NH Department of Environmental Services 
>Pollution Prevention Program 
>6 Hazen Drive 
>Concord, NH 03301 
>603 271-2902 
>603 271-2456