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•~ ~ ~ r <br />/ P,05 <br />. f <br />h~~ National Stone Assoclatlon <br />Place. N.VV. ~ V/arhlnptCn, D.C. 20007-2599 ~ 202/342-1100 <br />December 13, 1991 <br />Mr. Craig Grotenhaus <br />Pete Lien & Sons, Inc. <br />P.O. Box 440 <br />Rapid City, South Dakota 57709 <br />Dear craiq: <br />Enclosed as requestefl is a copy of the current version of Part 1 <br />oP NSA's Mining and Quarries Group Application for Storm Water <br />Permits, along with a copy of some additional information we <br />provided EPA on December 6. Xou will find Pete Lian & Sons <br />facilities in Precipitation Zone 9 beginning on page 191 and <br />continuing on pages 192, 194 and 195. <br />As 2 mentioned previously, EPA's requirements for Part 1 of the <br />group application have evolved as we've gone through the <br />application and review process over the past few months. The <br />agency has increased its focus on Part i and has asked for soma <br />data that would not have bean provided until Part 2, under the <br />original requirements. When you submit this to state NPDES <br />regulatory agencies, please be sure and point out to them that <br />this is to be considered an interim version of the application. <br />I will send you a copy of the final version to replace it once we <br />have formal approval of Part 1 from EPA. The final version will <br />incorporate any changes made. <br />If either you or the state regulatory agencies have questions, I <br />would be pleased to answer them. <br />Thanks for participating in the group application, and for your <br />support o£ NSA and its activities. <br />Sincerely,' 4 <br />~~W <br />William C. Ford, P.E. <br />Director of Environmental Programs <br /> <br />