[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
- From: "Ralph +or Meg Cooper" <email@example.com>
- Date: Thu, 18 Feb 1999 09:20:54 -0500 (EST)
Subject: Re: Farewell and coolant-related machine shop question
Reply-To: "Ralph +or Meg Cooper" <firstname.lastname@example.org>
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
San Antonio, TX 78231
From: Vincent R. Perelli <email@example.com>
To: firstname.lastname@example.org <email@example.com>
Date: Wednesday, February 17, 1999 11:21 AM
Subject: Farewell and coolant-related machine shop question
>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.
>NH Department of Environmental Services
>Pollution Prevention Program
>6 Hazen Drive
>Concord, NH 03301