After-Hour Stormwater After-Hour Stormwater Surveillance Pilot StudySurveillance Pilot Study

Rinta Perkins (City of Walnut Creek)Rinta Perkins (City of Walnut Creek)

Jeff Roubal (City of Concord)Jeff Roubal (City of Concord)

October 9, 2008October 9, 2008

AgendaAgenda

Pilot Study GoalsPilot Study Goals Inspection Description (FY 2003/04, FY Inspection Description (FY 2003/04, FY

2006/07 and FY 2007/08)2006/07 and FY 2007/08) FindingsFindings

City of Walnut CreekCity of Walnut Creek City of ConcordCity of Concord

Lessons LearnedLessons Learned

Pilot Study GoalsPilot Study Goals

Partner with Central Contra Costa Sanitary Partner with Central Contra Costa Sanitary DistrictDistrict

Confirm if and what type of non-Confirm if and what type of non-stormwater discharge activities exist stormwater discharge activities exist

after-hourafter-hour Identify types of illicit discharges and Identify types of illicit discharges and

targeted audiencetargeted audience Follow-up outreach effortsFollow-up outreach efforts

DescriptionDescription First surveillance in FY 2003/04 (Walnut Creek)First surveillance in FY 2003/04 (Walnut Creek) Cost: $4,975Cost: $4,975 2 days in November 2003 and 2 days in May 2004 2 days in November 2003 and 2 days in May 2004

(3:00 – 7:30 am)(3:00 – 7:30 am) Few activities encountered because of time of Few activities encountered because of time of

inspectionsinspections Safety concerns for inspectorsSafety concerns for inspectors

Require 2 inspectorsRequire 2 inspectors Police on-callPolice on-call

Description Description (Continued)(Continued)

Joint surveillance in FY 2006/07 and FY 2007/08 Joint surveillance in FY 2006/07 and FY 2007/08 by cities of Concord and Walnut Creekby cities of Concord and Walnut Creek

Inspections occurred on June (4 days), July (2 Inspections occurred on June (4 days), July (2 day) and August (2 days)day) and August (2 days)

Period: variedPeriod: varied Friday (3:30 until 7:30 am)Friday (3:30 until 7:30 am) Saturday (5:00 until 9:30 am)Saturday (5:00 until 9:30 am) Sunday (6:30 until 11:00 am)Sunday (6:30 until 11:00 am)

Cost: $10,400 (split between Concord and Cost: $10,400 (split between Concord and Walnut Creek)Walnut Creek)

Description Description (Continued)(Continued)

Required only 1 inspector per cityRequired only 1 inspector per city Police Department notifiedPolice Department notified Inspectors provided:Inspectors provided:

After-hours contact listAfter-hours contact list Map of targeted areas or businessesMap of targeted areas or businesses Written instructionsWritten instructions Blank surveillance logsBlank surveillance logs

Separate log sheet for each target area Separate log sheet for each target area (Concord had seven areas)(Concord had seven areas)

Recorded any observation whether Recorded any observation whether there is an event or notthere is an event or not

Provides a source document for follow-Provides a source document for follow-upup

Documents for regulators that we have Documents for regulators that we have not ignored after-hours activitynot ignored after-hours activity

DocumentationDocumentation

FindingsFindings

More washing activities during the time More washing activities during the time periodperiod

Surveillance provides leads to follow-up Surveillance provides leads to follow-up (Concord)(Concord)

More washing activities done by More washing activities done by employees, not contractor (Walnut employees, not contractor (Walnut Creek)Creek)

Findings Findings (Continued)(Continued)

After-hours inspections can enhance the After-hours inspections can enhance the credibility of business inspection programcredibility of business inspection program

Knowledge of washing activities in certain Knowledge of washing activities in certain geographic areas makes for more successful geographic areas makes for more successful surveillancesurveillance

Parking garages not observed to be a problem Parking garages not observed to be a problem during the surveillance events (Concord)during the surveillance events (Concord)

Restaurants remain the biggest challenge Restaurants remain the biggest challenge (Walnut Creek & Concord)(Walnut Creek & Concord)

0

5

10

15

20

Year of Implementation

Comparison After-Hour Surveillances (in Walnut Creek)

Observed Activities

NOV Issued

WN IssuedObserved Activities 16 15 6

NOV Issued 6 5 2

WN Issued 3 1 0

FY 2003/04 FY 2006/07 FY 2007/08

Data AnalysisData Analysis

What Did We Learn?What Did We Learn?

Outreach letters Outreach letters and restaurant and restaurant BMPsBMPs

More employees More employees trainingtraining

Lessons Learned Lessons Learned (Continued)(Continued)

More territories can be surveyed after-More territories can be surveyed after-hourshours

Few supervisory personnel are available Few supervisory personnel are available after-hoursafter-hours

Nothing going on early Sunday morningNothing going on early Sunday morning After-hour surveillance component could After-hour surveillance component could

be built into inspection agreement with be built into inspection agreement with CCCSDCCCSD

Questions & AnswersQuestions & Answers