Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 25 - STATE WATER CONTROL BOARD › Chapter 193 - Virginia Pollutant Discharge Elimination System (VPDES) General Permit for Concrete Products Facilities › Section 9VAC25-193-70 - General permit

Current through Register Vol. 40, No. 24, July 15, 2024
Any owner whose registration statement is accepted by the
				  board will receive coverage under the following general permit and shall comply
				  with the requirements in the general permit and be subject to all requirements
				  of 9VAC25-31-170 of the VPDES Permit
				  Regulation.
General Permit No: VAG11
Effective Date: January 1, 20
				  19
Expiration Date: December 31, 2023
GENERAL PERMIT FOR CONCRETE PRODUCTS FACILITIES AUTHORIZATION
				  TO DISCHARGE UNDER THE VIRGINIA POLLUTANT DISCHARGE ELIMINATION SYSTEM AND THE
				  VIRGINIA STATE WATER CONTROL LAW In compliance with the provisions of the Clean
				  Water Act, as amended, and pursuant to the State Water Control Law and
				  regulations adopted pursuant thereto, owners of concrete products facilities
				  are authorized to discharge to surface waters within the boundaries of the
				  Commonwealth of Virginia, except those specifically named in board regulations
				  that prohibit such discharges.
The authorized discharge shall be in accordance with the
				  information submitted with the registration statement, this cover page, Part
				  I-Effluent Limitations, Monitoring Requirements, and Special Conditions, Part
				  II-Stormwater Management, and Part III-Conditions Applicable to All VPDES
				  Permits, as set forth in this permit.
A. Effluent limitations and monitoring
				requirements.
1. Process wastewater.
During the period beginning with the permittee's coverage
				  under this general permit and lasting until the permit's expiration date, the
				  permittee is authorized to discharge process wastewater that may contain input
				  from vehicle wash water, or vehicle or equipment degreasing activities, and may
				  be commingled with stormwater associated with industrial activity, or both.
				  Samples taken in compliance with the monitoring requirements specified below
				  shall be taken at outfalls:
Such discharges shall be limited and monitored by the
				  permittee as specified below:
EFFLUENT
							 CHARACTERISTICS
DISCHARGE LIMITATIONS
MONITORING REQUIREMENTS
Average
Maximum
Minimum
Frequency(3)
Sample Type
Flow (MGD)
NL
NL
NA
1/3 Months
Estimate
Total Suspended Solids (mg/l)
30
60
NA
1/3 Months
Grab
pH (standard units)
NA
9.0(1)
6.0(1)
1/3 Months
Grab
Total Petroleum
							 Hydrocarbons(2) (mg/l)
NA
15
NA
1/3 Months
Grab
NL = No limitation, monitoring required
NA = Not applicable
(1)Where the Water Quality
							 Standards (9VAC25-260) establish alternate standards for pH in the waters
							 receiving the discharge, those standards shall be the maximum and minimum
							 effluent limitations.
(2)Total Petroleum
							 Hydrocarbons limitation and monitoring are only required where a discharge
							 contains process wastewater generated from the vehicle or equipment degreasing
							 activities. Total Petroleum Hydrocarbons shall be analyzed using EPA SW-846
							 Method 8015 B (1996), 8015C (2000), 8015C (2007), 8015 D (2003) for diesel
							 range organics or EPA 40 CFR Part 136.
(3)1/3 months means one
							 sample collected per calendar quarter with reports due to the DEQ regional
							 office no later than the 10th day of April, July, October, and
							 January.
2.
				Stormwater associated with industrial activity from concrete products
				facilities.
During the period beginning with the permittee's coverage
				  under this general permit and lasting until the permit's expiration date, the
				  permittee is authorized to discharge stormwater associated with industrial
				  activity that does not combine with other process wastewaters prior to
				  discharge. Samples taken in compliance with the monitoring requirements
				  specified below shall be taken at outfalls:
Such discharges shall be limited and monitored by the
				  permittee as specified below:
EFFLUENT
								CHARACTERISTICS
DISCHARGE LIMITATIONS BENCHMARK
								MONITORING
MONITORING
								REQUIREMENTS(3), (5)
Maximum
Minimum
Frequency(4)
Sample Type
Flow (MG)
NL
NA
1/Year
Estimate(1)
Total Suspended Solids (mg/l)
NL(2)
NA
1/Year
Grab(2)
pH (standard units)
NL(2)
NL(2)
1/Year
Grab(2)
NL = No limitation, monitoring required
NA = Not applicable
(1)Estimate of the total
								volume of the discharge during the storm event in accordance with the operation
								and maintenance manual.
(2) If the benchmark
								monitoring for TSS exceeds 100 mg/l maximum or the pH falls outside of the
								range of 6.0-9.0 standard units, the permittee shall evaluate the overall
								effectiveness of the stormwater pollution prevention plan (SWPPP) in
								controlling the discharge of pollutants to receiving waters. Benchmark
								concentration values are not effluent limitations. Exceedance of a benchmark
								concentration does not constitute a violation of this permit and does not
								indicate that violation of a water quality standard has occurred; however, it
								does signal that modifications to the SWPPP are necessary, unless justification
								is provided in the routine facility inspection.
(3)Specific storm event
								data shall be reported with the Discharge Monitoring Report (DMR) in accordance
								with Part II A.
(4)1/year means one
								sample taken per calendar year with the annual DMR due to the DEQ regional
								office no later than the 10th day of January of each year.
(5)Quarterly visual
								monitoring shall be performed and recorded in accordance with Part II
								C.