My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2024-06-28_PERMIT FILE - M2024034 (5)
DRMS
>
Day Forward
>
Permit File
>
Minerals
>
M2024034
>
2024-06-28_PERMIT FILE - M2024034 (5)
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
7/2/2024 10:31:34 AM
Creation date
7/2/2024 9:28:57 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2024034
IBM Index Class Name
Permit File
Doc Date
6/28/2024
Doc Name
Application
From
Asphalt Specialties Co., Inc
To
DRMS
Email Name
NCG
JLE
EL1
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
165
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
Table G-1. Surface Water Discharge Monitoring Requirements in NPDES Discharge <br /> Permit <br /> Parameter Monitoring Frequency Sample Type <br /> Flow Instantaneous, Monthly In-situ <br /> pH 2x/month Grab <br /> Total Suspended 2x/month Grab <br /> Solids <br /> Oil and Grease Visual 2x/month Visual <br /> Oil and Grease Contingent on visibility Grab <br /> of oil and grease <br /> Total Flow Instantaneous, Monthly Calculated <br /> Selenium,Potentially 2x/month Grab <br /> Dissolved <br /> Total Dissolved Solids Quarterly Grab <br /> Note:these are the anticipated analytes based on operator experience at similar sites.CDPHE may issue <br /> different sampling requirements with the permit. <br /> 3. Floodplain <br /> The majority of the site is within the 100-year floodplain and floodway as reported by the <br /> Federal Emergency Management Agency. These boundaries are shown in the Exhibit C and F <br /> maps. The minimum distance maintained from the South Platte River to excavation activities is <br /> 100 feet. Additionally, no stockpiling or filling above the natural grade will occur in the floodway. <br /> Overall, the downstream flood impacts should remain the same or be reduced from activity at <br /> the site as the removal of material results in more storage space for flood water below the <br /> existing grade. A no-rise certification has been provided to Weld County as part of its floodplain <br /> development permit. <br /> In accordance with the Mile High Flood Control District technical guidelines, inflow/outflow <br /> structures will be installed along the riverbank where mining reaches its closest point to the <br /> South Platte River. Details of these designs can be seen on Map G-1. <br /> In the event of flooding at the site, equipment from the active mining floor will be removed and <br /> the pit will be allowed to fill with water. The flooded pit will be pumped only after the flood has <br /> subsided. All fuel will be stored at least one foot above the base flood elevation and in sufficient <br /> secondary containment with 110% carrying capacity. <br /> 4. Wetlands <br /> The National Wetlands Inventory aerial-based mapping indicates the presence of wetlands <br /> within the permit area. They are however limited to a concrete lined ditch and a settling pond at <br /> the end of the ditch. An onsite inventory of potential wetlands will be undertaken before <br /> disturbing these areas. Exhibit C and F maps show the NWI mapped wetlands. <br /> Marcovich Gravel Pit <br /> May 2024 G-2 Lewicki&Associates <br />
The URL can be used to link to this page
Your browser does not support the video tag.