HYDRO21155

• Permit No: M1992069
• IBM Index Class Name: Hydrology
• Doc Date: 11/19/2001
• Doc Name: OCTOBER 2001 QUARTERLY MONITORING REPORT AGGREGATE INDUSTRIES F ST FACILITY
• From: PARAGON
• To: DMG
• Media Type: D
• Archive: No

RECEIVED
SEP 2 8 2001
Division at Minerals and Geology
September 27, 2001
Ms. Kate Pickford
Envvonmental Protection Specialist
Division of Minerals and Geology
1313 Sherman Street, Room 215
Denver, CO 80203
Re: Permit No. M-1992-069 - 83'~ Joint Venture Pit
Monitoring Inspection of September 20, 2001
Dear Kate:

AGGREGATE
INDUSTRIES
1 am in receipt of your report of the above-referenced inspection and noted items that require additional
information or further clarification. The following, numbered in accordance with the observations set
forth on Page 2 of the report, respond to those items:
2. The contaminated soil from the abatement excavation was placed on a plastic liner. This soil is being
run through the aggregate plant to process material suitable for use in producing asphalt pavement
mix from the on-site asphalt plant. On or about June 4, 2001, Jamie Gaboriau, Environmental
Manager of Aggregate Industries-WCR, Inc., contacted Bob Jorgensen of the Air Pollution Control
Division, Colorado Department of Public Health and Environment, and obtained his approval for
incorporating the contaminated soil into the production of asphalt on the site.
3. The fill material for the abatement excavation came from the overburden stockpile (berm) west of the
excavation, and from clean soil that had been removed from the abatement excavation.
Approximately eight (8) to ten (10) feet of clean soil was excavated above the contaminated soil, and
the clean soil had been stockpiled separately from the contaminated soil,
On June 13, 2001, Scott Rutherford of Paragon Consulting, spoke with Roger Doak of the Hazardous
Materials and Waste Management Division, Colorado Department of Public Health and Environment,
and Mr. Doak was in agreement with backfilling the abatement excavation and mining it out later.
4. Groundwater and free-phase product in the amount of 83,000 gallons was shipped by Key Energy
Services to Arvada Treatment Center for treatment and disposal. The additional groundwater that had
been pumped from the excavation, approximately 20,000 gallons, was used for dust suppression of
aggregate material as it was run through the asphalt plant. Bob Jorgensen (APCD), agreed to allow
the use of that water at the same time that he approved incorporation of the contaminated soil into
asphalt production.
Aggregate Industries
West Central Region, Inc.
3605 South Teller Street
Lakewood, CO 80235
Connie Nickle Davis, Support Services
P. O. Box 337231. Grccley, CO 80633 Please Nole Ad~ess Change for C Davis
970-336fi526 Faz: 970-378fi856
Telephone: [phone] An Equal Opportunity Employer