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The Silver Creek Cliff Tunnel and adjacent Gitchi-Gami State Trail, Duluth, Minn.

Re the feature "Minnesota Steeps: Stabilizing a Hillside Secures Scenic Value" in the Feb. issue by Donald Obernolte, RLA:

An excellent job of highlighting a wonderful project for Mn/DOT and the state. The photos that you included really help to tell the story of the uniqueness of the site, the quality and complexity of the design and the way in which the public is using and enjoying the trail. Great job.

Carol Reamer, Landscape Architect
Site Development Unit Manager
Mn/DOT, Office of Technical Support
St. Paul, Minn.

Carlisle, a planned community in Franklin, Tenn.

Re "Community Design" (Carlisle, a planned community in Franklin, Tenn., and CrossWynde, an apartment complex in Tampa, Fla.), Stephen Kelly, editor:

Stephen, you forgot to add some important facts about our neighborhood, Carlisle. Carbine Development did not make any provisions to take care of the underground wet weather springs, so houses have water under them like mine, we have sink holes in the sidewalk around the green. Don't forget about the water feature in the Gazebo, it has been shut down, poor design. The lake has been drained several times, poor construction. A pansy planter does not make a landscaper. Enviroscape has been let go. If it's so good here why do we have such a high amount of resales, walk-aways and buy backs? Like to buy my house?

Jim Perkins
Carlisle Neighborhood
Franklin, Tenn.

Editor's note: Jim: Thank's for the insider's view. I could be amenable to a house swap if all your plumbing works, but after seeing the sink hole in Guatemala City I may have to reconsider. --Stephen Kelly, editor

811 "Call Before You Dig"

Editor's note: The Common Ground Alliance (CGA) has launched a national 811 "Call Before You Dig" website ( as a resource for landscape professionals, with free downloadable materials available and an online "tips and tools" forum to share best practices across the industry. The national number will be launched to the public in May of 2007.

811 is the new FCC-designated number created to eliminate confusion of multiple "Call Before You Dig" numbers across the country. An 811 call will send a utility crew to the site to mark the approximate location of underground lines for free.

Knowing where utility lines are buried is important, of course. Pipes or lines installed decades ago may now be at different depths due to subsequent building and construction. CGA estimates there were approximately 680,000 underground line strikes in 2004, resulting in injuries, damages and service outages.

Re 811 "Call Before You Dig" (on Martin Sikorski wrote in with this comment:

To add additional value to this service, mark outs should be performed at the beginning of site development projects. This way the mark outs could be located during the initial survey phase and the information used for design purposes. It is a little too late to find subsurface utilities after the design, approval and permitting process are complete and the contractor is ready to dig. I was informed by a "Call Before You Dig" representative that doing such work was not in their mandate and therefore they couldn't do it. My client's would gladly pay for the service if offered.

Martin Sikorski
Chief of Survey
Vanasse Hangen Brustlinb, Inc.
Edison, New Jersey

The precision cuts of this 18-ft. dia. porcelain mural is via waterjet technology and computer guidance. The orifice diameter of the jet nozzle is .25 mm to .35 mm. The typical assembly consists of a sapphire (ruby or diamond) orifice and a precision stainless steel mount with an abrasive feed chamber, from which garnet or a sand-like substance enters the water stream.

Re "An Ancient Form Made New: Waterjet Fabrication Expands the Designers Repertoire" in the Feb. issue, by Jim Belilove and Ron Blair of Creative Edge:

Excellent story and application of this technology. Ruby technology, when applied into high-pressure fog nozzles utilized in special-effects and humidification fog systems, provides a 20-year life to the nozzle orifice vs. 1,000 hours on ordinary steel nozzles. We patented and successfully applied this 'hard' ruby technology since 1995. Repeatability from nozzle to nozzle is 99.9 percent.

Michael Elkas
Atomizing Systems, Inc.
Ho-Ho-Kus, N.J.

The 1,500 acre traditional neighborhood development (TND) in Franklin, Tenn.

Re "An Urban Concept Grows in Farm Country" in the Jan. issue, by Karen Parr, Southern Land Co.

I am involved with the American Planning Association, Small Towns and Rural areas Division. I have been working on creating a library of photo examples of TND in small towns. This information is shared with small town and rural planners that often don't have such examples nearby and therefore depend on photo examples. (This) project can be a model for other towns across the nation.

Paul Bednar Planning & Design
Elgin,, Ill.

Wasn't all land farm country before being developed? Or rural land, or simply undeveloped land? This same "urban" concept is what developed the Bronx, Brooklyn and Queens into the mini and overcrowded cities they are today. The few beautiful or historically preserved sections are no solace to the overcrowded and once beautiful sections that are no more.

Linda Anthony
Syosset, New York

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June 16, 2019, 10:37 pm PDT

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