1993-07-14_PERMIT FILE - C1981017

• Permit No: C1981017
• IBM Index Class Name: Permit File
• Doc Date: 7/14/1993
• Doc Name: Phase I Environmental Site Assessment of the Pitkin Iron Limestone Division property Crbondale, Co
• Media Type: D
• Archive: No

TABLE OF CONTENTS
HYDROGEOLOGIST'S TOXIC AND HAZARDOUS SUBSTANCE
LETTER OF OPINION . . . . . . . . . . . . . . . . . . . . .
1. 0 SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . 1
1. 1 TERMS OF REFERENCE . . . . . . . . . . . . . . . . 1
1.2 SUMMARY OF FINDINGS . . . . . . . . . . . . . . . 1
1.2 . 1 Site Description . . . . . . . . . . . . . . 1
1.2.2 Previous Site Use . . . . . . . . . . . . . 4
1. 3 LIMITATIONS OF THIS ASSESSMENT . . . . . . . . . . 6
2 . 0 PURPOSE AND SCOPE OF THIS WORK . . . . . . . . . . . . . 7
2 . 1 PURPOSE . . . . . . . . . . . . . . . . . . . . . . 7
2 . 2 APPROACH . . . . . . . . . . . . . . . . . . . . . 7
2 . 3 SCOPE . . . . . . . . . . . . . . . . . . . . . . . 8
3 . 0 INVESTIGATIVE METHODS . . . . . . . . . . . . . . . . . 9
3 . 1 OVERVIEW . . . . . . . . . . . . . . . . . . . . . 9
3 .2 TASK 1: RECORDS SEARCH . . . . . . . . . . . . . 9
3 .2 . 1 Overview . . . . . . . . . . . . . . . . . . 9
3 . 2 . 2 Subtask 1-1: Review of Regulatory Records 9
3 . 2 . 3 Subtask 1-2 : Review of Water Use, Soil,
Geologic and Hydrogeologic
Records . . . . . . . . . . . 10
3 .2 .4 Subtask 1-3 : Review of Aerial Photographs 10
3 . 2 . 5 Subtask 1-4: Review of Chain-Of-Title . . . . .
Records . . . . . . . . . . . . . . . . . 11
3 . 3 TASK 2 : SITE SURVEY . . . . . . . . . . . . . . 11
3 . 3 . 1 Subtask 2-1: Interviews With Former . . . . . .
Employees . . . . . . . . . . . . . . . . 11
3 . 3 .2 Subtask 2-2 : Site Walk-Through . . . . . . 11
3 .4 TASK 3 : INTERIM REPORTING . . . . . . . . . . . 11
4 . 0 DISCUSSION OF FINDINGS . . . . . . . . . . . . . . . . 13
4. 1 SITE DESCRIPTION . . . . . . . . . . . . . . . . 13
4 . 2 SITE FACILITIES . . . . . . . . . . . . . . . . . 13
4 . 3 NEIGHBORING FACILITIES . . . . . . . . . . . . . 14
4 . 4 REGIONAL GEOLOGY, HYDROGEOLOGY, AND WATER USE . . 15
4. 4. 1 Geology . . . . . . . . . . . . . . . . . 15
4 .4 .2 Hydrogeology . . . . . . . . . . . . . . . 16
4.4. 3 Surface Water . . . . . . . . . . . . . . 16
4.4.4 Public Water Use . . . . . . . . . . . . . 16
4. 5 CURRENT USE OF THE SITE . . . . . . . . . . . . . 18
4 . 6 FORMER USE OF THE SITE . . . . . . . . . . . . . 18
4 . 7 FUEL STORAGE . . . . . . . . . . . . . . . . . . 19
4 .7 . 1 Above-Ground Storage Tanks (ASTs) . . . . 19
4. 7.2 Underground Storage Tanks (USTs) . . . . . 19
4 .8 WASTE HANDLING, STORAGE, AND DISPOSAL . . . . . . 19
4 .8 . 1 Overview . . . . . . . . . . . . . . . . . 19
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