PERMFILE119996

• Permit No: M2002111
• IBM Index Class Name: Permit File
• Doc Date: 10/3/2003
• Doc Name: Gilsenite Pit Revised Contingency Plan
• From: CDPHE
• To: DMG
• Media Type: D
• Archive: No

1.0 Introduction
This Waste Management Contingency Plan ( WMCP) has been prepared on behalf of
Fruita Mazketing & Management, Ina (FMM) by Mesa Environmental Inc., (MEI ),
to guide waste management practices during the proposed sand and gravel mining
activities on an approximately 70 acre leased azea of FMM s facility at 1493, Highway 6
& 50, two mile west of Fruita, Colorado. Gravel Mining is expected to commence in
winter 2003/2004 in the azea known as Evaporation Pond No. 9 (Figure 1) and continue
for several yeazs at the site.
The facility, including the azea to be mined, is currently subject to Colorado Department
of Public Health and Environment, Hazazdous Materials and Waste Management
Division (Division) Compliance Order No. 98-06-OS-OI (Order ). In accordance with
the Order, FMM is required to chazacterize soil and groundwater contamination at the
facility. A Soil Chazacterization Plan ( SCP) (Mazch 29, 2001) was submitted and
approved with modifications by the Division on May 7, 2001. The focus of the SCP was
on Area A, the azea within the gravel mining lease boundary as depicted on the Site Plan
(Figure 1). Area A was further subdivided into three Subareas (1-3) (Figure 2). Subazea
3 includes Evaporation Pond No. 9 and the land to the north, and was expedited for
characterization to allow mining to begin in this azea. Soil and groundwater sampling was
conducted in Subarea 3 in the summer of 2001, and the results aze included in the Soil
Chazacterization Data for Evaporation Pond No. 9 (October 29, 2001) and associated
analytical reports.
Gravel Mining will be conducted in Evaporation Pond No. 9 for the first few yeazs, but it
is planned to eventually progress westward to include the area of Oxidation Ponds No 1-3
(Figure 2). However, no mining (or any other related activity) will occur in the area of
these land based RCRA units (Oxidation Ponds 1-3 and associated ditches north of
Oxidation Pond No. 1) until they aze certified clean-closed under the Final Closure Plan
for Waste Pile No 4. In addition, no azeas other than Subazeas 1 and 3 will be mined
until chazacterized in accordance with the SCP and approved by the Division.
Known and potential contaminants include a variety of hydrocarbons and other organic
compounds (e.g. benzene, toluene, ethylbenzene, xylenes [BTEX], methyl tertiary butyl
ether [MTBE], total petroleum hydrocazbons [TPH], semi volatile organic compounds
[SVOCs] and RCRA metals (e.g. chromium and lead). Since environmental media (soil
and groundwater) contaminated with these compounds may be encountered in the gravel
lease area during mining activities, the Division has requested that FMM prepaze this
WMCP.
This WMCP summarizes the methods that will be used to recognize, chazacterize, handle,
store and dispose of contaminated environmental media, solid wastes (scrap metals, old
tires, scrap lumber), asbestos containing building materials (ACBM) or pipe insulation, or
hazazdous wastes encountered in the gravel mining azea. All waste management practices
will be in accordance with the Division s requirements. The WMCP also contains a
groundwater monitoring plan that will be implemented during mining activities.