View
214
Download
1
Category
Preview:
Citation preview
Stormwater Compliance Training
South County Regional Wastewater Authority
July 2015
Jack RosenburgCH2M / Oakland
2
Why are we here?
• Plant discharges stormwater from areas that are exposed to industrial activity
•Wastewater treatment plants are required to obtain coverage under the Industrial General Stormwater Permit (IGP)
• Plant has had IGP coverage since early 1990s
• New permit took effect on July 1, 2015
•We have new:– Stormwater Pollution Prevention Plan (SWPPP)
– Stormwater Pollution Prevention Team
– Stormwater monitoring program
– Numeric action levels
• Permit and SWPPP require periodic stormwater training
3
What will we cover?
• Background on new permit
• Overview of Stormwater Pollution Prevention Plan
• Stormwater Pollution Prevention Team
• Best Management Practices to keep pollutants out of stormwater
4
Purpose of IGP: keep industrial pollutants out of stormwater
• Identification of potential pollutants and how they might reach stormwater
• Prevention through Best Management Practices
• Inspections and monitoring to verify effectiveness
• Numeric Action Levels (NALs) to measure effectiveness
• Corrective measures if action levels are exceeded
• Online reporting
• Leadership from the Stormwater Pollution Prevention Team
5
IGP is an NPDES Permit issued under the Federal Clean Water Act
• Enforced by Regional Water Board• Can be enforced by third party lawsuits• SWPPP and monitoring data publicly
available online
6
Scope of the permit
• Permit covers discharges to waters of the US of:– Stormwater from industrial activities
– Certain authorized non-stormwater discharges
• Permit does not cover:– Construction activities
– Discharges of treated wastewater
– Unauthorized non-stormwater discharges
7
Focus of stormwater management program
8
Treatment Plant Area
Stormwater discharge to
retention pond
Included in SWPPP to:• Prevent
pollution of groundwater
• In case discharge from retention pond occurs
9
Influent Pump Station
Stormwater from northern portion of IPS flows to storm drain inlets, which flow to Llagas Creek
10
Stormwater Pollution Prevention Team• Thom Vinson: Plant Manager– Provides overall direction and allocates resources for stormwater
compliance; reviews stormwater documents and submittals; Legally Responsible Person for certifying stormwater submittals
• Jack Rosenburg: Team Leader– Oversees SWPPP implementation; performs stormwater inspections,
sampling; and annual compliance evaluation; reviews stormwater sampling data
• Garon Goularte: Team Member– Performs stormwater inspections, sampling; and annual compliance
evaluation; reviews stormwater sampling data
• Operators– Perform stormwater sample collection when necessary
Everyone: use best management practices to prevent stormwater pollution
11
Dick’s new stormwater role
Thanks, Dick
12
Stormwater Pollution Prevention Plan (SWPPP)
• Introduction
• Facility Description & Maps
• Potential Stormwater Pollution Sources
• Stormwater Best Management Practices
•Monitoring Implementation Plan
• Annual Comprehensive Site Compliance Evaluation & Annual Report
• Recordkeeping and Compliance Calendar
13
Industrial materials: potential stormwater pollutants
• Diesel Fuel
• Transformer oil
•Waste oil
• Sodium hypochlorite
• Liquid polymer
• Sodium bisulfite
• Aluminum sulfate (liquid alum)
• Sodium hydroxide
• Raw wastewater
• Secondary treated wastewater
• Grit
• Solids (sewage sludge)
• Hauled septage
14
Potential stormwater pollution sources
• Industrial processes– Wastewater treatment
– Vehicle & equipment cleaning
– Maintenance
– Waste disposal
•Materials loading & unloading– Raw septage delivery
– Bulk chemical & fuel delivery
– Used oil pickup
– Solids loading and transportation
• Storage– Bulk chemicals & fuel
– Used oil
– Grit
– Oil-filled electrical equipment
• Spills & Leaks
• Erosion of unpaved surfaces
• Unauthorized non-stormwater discharges
15
Best management practices (BMPs) to prevent stormwater pollution
• Containment– Secondary containment for bulk chemical and fuel tanks, containers, and
fuel piping
– Plant drain system
– Stormwater retention pond
• Erosion control– Surfacing (pavement, gravel, vegetation, mulch)
– No driving on dirt levees when raining
16
Best management practices (BMPs) to prevent stormwater pollution
• Good housekeeping– All staff have housekeeping responsibilities per Equipment Operating
Procedure #19: Plant Coordination
– Littering prohibited
– Keep materials away from storm drains
– Septage hauler cleanup restricted to area that drains to plant
• Inspections– SWPP Team performs IGP-required inspections (monthly; during
stormwater sampling; annual compliance inspection)
– Regular inspections scheduled by computerized maintenance management system
– Supervisors review inspection reports
17
Best management practices (BMPs) to prevent stormwater pollution
•Maintenance– Automated scheduling; corrective maintenance work orders for
unplanned events
– Maintenance verification by supervisors
– Vehicle washing restricted to areas that drain to plant drain system
– Equipment cleaning restricted to areas that drain to plant drain system or ponds
– All catch basins in the storm drain system are cleaned out and storm drain lines are jetted annually
18
Best management practices (BMPs) to prevent stormwater pollution• Chemical & fuel deliveries– Driver reports to plant office before offloading material
– Must be supervised by plant staff
– Position vehicle within contained area
– Chock wheels; place vehicle in N or P; set parking brake
– Verify receiving tank’s capacity before offloading
– Cover storm drain inlets with rubber mats
– Have spill kit available nearby
– Use drip pans or buckets under hose connection points
– Secure quick connections properly before transfer
– Blow out or drain transfer lines before breaking connection
– Inspect and secure drain outlets on truck before departing
19
Best management practices (BMPs) to prevent stormwater pollution
• Biosolids and grit truck loading– Truck loading and cleaning activities take place in designated areas that
drain to plant drain system
– Trucks must be covered and cleaned prior to leaving facility
• Industrial materials handling– Industrial materials not in ASTs are stored in covered areas or indoors
– All materials are labeled
– Industrial materials that could be mobilized by contact with stormwater not handled outdoors during a rain event
– Pesticide preparation, mixing, and filling only performed in areas that do not drain to storm drain system
– Do not accept delivery of leaking or damaged packaged industrial materials
20
Best management practices (BMPs) to prevent stormwater pollution
• Alarms– Alarms system monitored by plant operators
• Equipment Operating Procedure #18: Plant Alarms
• Equipment Operating Procedure #19: Plant Coordination
• Spill Response Procedures– Emergency Response and Hazardous Waste Contingency Plan
– Spill kits located in key locations throughout plant; annual restocking in November
• Training– Periodic training on the IGP, SWPPP, and BMPs
21
Non-Stormwater Discharges
• Authorized non-stormwater discharges identified in the SWPPP– Fire hydrant flushing
– Electrical vault dewatering
– Clarifier dewatering
• All other non-stormwater discharges are prohibited; if observed, should be reported to SWPP Team
22
Evaluating Stormwater Program Effectiveness (SWPP Team)
•Monthly inspections to check for unauthorized non-stormwater discharges, potential sources of pollution, BMP implementation
• Sample stormwater discharges twice during each half-year– Visual observation of stormwater discharge for evidence of contamination
– Compare results to Numeric Action Levels (NALs) for pH, total suspended solids, oil and grease
– Plant enters Level 1 status if NALs exceeded; must evaluate potential pollutant sources and implement additional BMPs
• Annual comprehensive site compliance evaluation
• Annual reporting via online SMARTS system
23
Who is responsible for keeping pollutants out of stormwater?
24
Who is responsible for keeping pollutants out of stormwater?
25
Recommended