REP36827

• Permit No: M1977215
• IBM Index Class Name: Report
• Doc Date: 4/30/1996
• Doc Name: BULLDOG PROJECT MINERAL CNTY CO LOWER TAILINGS POND REMEDIATION SUMMARY REPORT
• From: HOMESTAKE
• To: DMG
• Media Type: D
• Archive: No

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TABLE 7B
BULLDOG NIINE - CREEDE, COLORADO -LOWER TAIL/NG POND - PIEZOMETER WP-31

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1
1

Sample

Date Ptez°meter
Water
Elevation Free Cyanide

(pp°t) Total Lead

(ppm) Total Zine

(ppm) Total Co er
PP
(ppm)
1 !an 84 8825.50 O.OI 0.49 0.23
6 Feb 84 8826.00 0.01
6 Mar 84 8826.33 O.OI 0.05 0.05
2 Apr 84 8826.60 0.25 0.09 O.IS
8 May 84 8826.60 0.21 0.05 0.15
6 Jun 84 8826.60 0.08 0.09 0.17
3 Jul 84 8826.60 0.09 0.07 O.li
6 Aug 84 8826.80 0.03 0.05 0.21
5 Sep 84 8826.90 0.01 0.05 0.17
I Oct 84 8826.80 O.OI
5 Nov 84 8826.80 0.01
5 Dec 84 8826.70 0.01
7 Jan 85 8826.12 0.01
25 Aug 85 8824.35 0.02 0.03 0.10 O.OI
30 May 86 8823.69 NS NS NS NS
l2 Dec 86 8824.90 <0.01 O.OOI O.OS 0.03
29 May 87 8824.44 <0.01 0.01 0.19 <0.006
10 Dec 87 8824.48 0.0 (• 2.30 0.93 0. I6
6 Apr 88 8823.93 <O.OIM 0.63 0.1 I 0.39
13 JuI83 8822.69 <O.OIk NS NS NS
6 Sep 88 8825.60 <O.OI@ 0.69 0.32 0.14
14 Nov 88 8821.31 <O.O I @ <0.30 <0.03 0.12
IOFeb89 8823.42 <0.01@ 0.98 O.li 0.11
6 May 89 8823.27 <0.01@ NS (I) 0.22 0.03
3 Oct 89 8823.26 <0.01@ 0.27 0.16 0.23
20 Nov 89 8822.32 <0.01@ 0.77 0.80 0.21
4 Jan 90 8822.35 <0.01& 0.25 0.20 0.06
4 Jun 90 8821.77 <0.01& <0.05 0.06 0.02
9 Sep 90 8821.69 <0.01& 0.06 0.08 0.04
6 Dec 90 8822.02 <0.01 & <0.05 <0.01 0.00
30 Apr9I 8822.02 <0.01& <0.05 0.04 0.01
25 June93 ND 0.05 0.06 0.03
' NS: No Sample Collcc[cd. DRY-NS: No Water; Therefore No Sample Collected. (1) Laboratory analysis inadvenendy conducted for iron rather than
lead. Iron concentrations were 37, 10, 2 and ? m~/I, respectively. (EPA Methods for "free" CN): 'Method 312.8, pM11e[hod 331.1, ©Method D-2036-