My wife (Rita) keeps close tabs on this message board, and she showed me this thread today. Unfortunately, it no longer amazes me what some people think they can get away with. However, we need more than moral outrage to help fight this. So, I'm sharing some information with you that I hope will help you that are close enough fight a better battle (we live in Arlington, TX, but have a house in the Dune Allen area), one based more on science than emotion.
First, a little about myself. I am an agronomist with the Natural Resources Conservation Service (NRCS), an agency of the U.S. Department of Agriculture. We are the agency that helped develop the Munsell Color Chart used to classify soil color (in an earlier post, someone referred to the Soil Conservation Service - that was us before a reorganization and name change about 10 years ago). My B.S. was in Soil Science, so I am familiar with how soil and soil materials are described and classified. That's not my area of expertise now, but I can point you toward links and resources that may be useful.
For more information on the Munsell Color classification scheme for soils, go to:
http://soils.usda.gov/technical/manual/contents/chapter3f.html
Here is a brief explanation, but you really need to follow the link to see some illustrations of the system.
The Munsell color system uses three elements of color?hue, value, and chroma?to make up a color notation. The notation is recorded in the form: hue, value/chroma?for example, 5Y 6/3.
Hue is a measure of the chromatic composition of light that reaches the eye. The Munsell system is based on five principal hues: red (R), yellow (Y), green (G), blue (B), and purple (P). Five intermediate hues representing midpoints between each pair of principal hues complete the 10 major hue names used to describe the notation. The intermediate hues are yellow-red (YR), green-yellow (GY), blue-green (BG), purple-blue (PB), and red-purple (RP).
Value indicates the degree of lightness or darkness of a color in relation to a neutral gray scale. On a neutral gray (achromatic) scale, value extends from pure black (0/) to pure white (10/). Gray is perceived as about halfway between black and white and has a value notation of 5/.
Chroma is the relative purity or strength of the spectral color. Chroma indicates the degree of saturation of neutral gray by the spectral color. The scales of chroma for soils extend from /0 for neutral colors to a chroma of /8 as the strongest expression of color used for soils.
One of the posts mentioned that a Munsell color of 6.2 was the lowest value that was considered acceptable for sand added to the beach. However, the "6.2", which I assume is a Munsell "value", is meaningless without knowing what hue (the basic color) range this value is in.
The NRCS has offices in almost every county in the country, and our employees are always available to help you with questions about our soil resources. Here is contact information for three people who should be able to answer some or all of your questions. I suggest contacting them in the order they are listed:
Terry Smith
USDA-NRCS
239 John Baldwin Road, Suite 2
DeFuniak springs, FL 32433
850-892-3712 EXT. 3
Terry.Smith@fl.usda.gov
Terry is the District Conservationist in Walton Co., and if he can't answer your questions, he can contact:
Jeff Allen
USDA-NRCS
4155 Hollis Drive
Marianna, FL 32448-2708
850-482-2002 EXT. 111
Jeff.Allen@fl.usda.gov
or
Andrew Williams
USDA-NRCS
c/o Santa Rosa Co. Health Department
Environmental Health Services
5840 Gulf Breeze Parkway
Gulf Breeze, FL 32563
850-932-9824
Andrew.Williams@fl.usda.gov
This is probably way too much information for many of you, but for those of you who will be carrying the fight for our beaches, I hope this is helpful.