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Appendix F ‒ County Property with Greater than Two

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1. Arlington_Outfalls Outfall Desc 3 Eg Chem gt Was Flow Observed Flow Description Heavy v Flow Depth 1 General Outfall Description Comments Field Protocol 8 Oufall Desc 1 outal gt Dutfall Type Closed Pipe y Material Shape Circular of Outlets Single X Closed Pipe Dimensions in H 24 W 24 Open Drainage Dimensions in T Width B Width Depth NM Chem Test EE Flow Obs gt Chem Tests Performed Chlorine 0 Nitrate fo Fouide 0 Nire fo Ammonia o pH Detergents jo Phosphorus p Chemical Test Comments Figure 3 1 Example dialog boxes used to record outfall screening data Information collected at each site will be stored in a geodatabase for subsequent organization and reporting The following screening information will be entered onto field data sheets 1 Background Data Record current date physical location GPS location investigators and other background data 3 3 Q VERSAR Field Protocol 2 Outfall Description Enter information describing the outfall including outfall ID if provided by County whether closed pipe or open channel physical dimensions shape orientation material type etc Indicate 1f water is flowing from the outfall and describe e g yes no intermittent stagnant 3 Quantitative Characterization If flowing water i
2. Bike locks or chain and padlocks 6 Ni Cd battery 7 Floatables monitoring support amp net Meteorology Obtain storm forecast from staff meteorologist The meteorologist should be beforehand made aware of antecedent dry time criteria minimum rainfall depth requirement and lead time required to gather sampling equipment travel to the site obtain ice and place and program sampler Such lead time will vary with distance from equipment storage Deployment 1 Attach bubbler line and suction tubing to sampler Attach suction line other end to low flow strainer in pipe if not already 2 Attach floatables capture net to stainless steel ring support Extend net slack down conduit in the same direction as stormwater flow path 3 Place ice in center of sampler Make sure sampler is level 4 When putting sampler back on top of bottom make sure straps are outside so distributor arm doesn t catch or slip straps between bottle carrier and sampler bottom 5 Program sampler to capture entire flow event Program duration should reflect both the duration of the rain and estimated time allowance for sampling of trailing limb rule of thumb for highly impervious catchments 4 hours To determine sample interval in minutes multiply sum of the rainfall and trailing limb allowance in hours by 2 5 6 Secure samplers to fencing or manhole steps using bike lock Stabilize with line if necessary 7 Attach sampler covers Be sure tha
3. CONTINUED D WET WEATHER SCREENING FIELD DATA SHEETS E CHAIN OF CUSTODY FORM c smicas I WPSHARED DEPT 74 ARLINGTON 5405 R DOC iv List of Tables LIST OF TABLES Table No Page 2 1 GIS layers and data to be used to select industrial commercial parcels for wet NEGO EE 2 7 3 1 Laboratory analytes and detection limits for Arlington County s wet weather screening and industrial high risk monitoring program eene 3 2 3 2 Schedule of Arlington County wet weather screening 3 3 5 1 Laboratory analytes and detection limits for Arlington County s wet weather screening and industrial high risk monitoring program eee 5 1 iii er VERSAR List of Tables iv Q VERSAR Introduction and Purpose 1 0 INTRODUCTION AND PURPOSE Arlington County like other urbanized areas 15 addressing the effects of nonpoint source pollution entering surface waters A major source of pollution is untreated stormwater runoff from impervious surfaces such as roads parking lots loading docks and outdoor storage areas Runoff from these surfaces is carried to surface waters via the storm sewer system The purpose of this plan is to establish the screening methodology for use in implementing 1 B 2 m 2 wet weather screening program of Arlington County s Municipal Separate Storm Sewer System 54 Permit This program plan desc
4. NVCC Arlington 1 89 1 61 0 28 Red Top Cab Transportation Incorporated 0 32 0 27 0 05 Ronald Reagan National Airport 723 07 440 06 283 01 US Department of Defense Pentagon 232 74 157 12 75 62 US NPS George Washington Memorial Pkwy Maint 4 78 1 59 Virginia Concrete Company Inc Shirlington 3 05 1 23 WMATA Four Mile Run Bus Garage 7 0 29 Arlington County Schools 358 33 217 4 2 372 35 1 033 01 1 339 31 b Virginia Department of Transportation In most cases VDOT areas are defined as the area within the right of way except in areas were the right of way includes both VDOT and Arlington County roadways and VDOT and Federal roadways the case of shared right of way VDOT s portions were determined with heads up digitizing using the 2011 topography to determine the area draining into VDOT network Site Area Impervious Area Pervious Area Acres Acres Acres 943 68 545 63 398 04 AS Shared Risht of Wav 2 A n S Y NN 7 A VDOT Right of Way 3 Other State and Federal owned land not permitted Parcels were identified in the tax records and the entire parcel area was subtracted from the service area regardless of drainage patterns for the following ownership Site Impervious Pervious Area Area Area Facility Acres Acres Acres Commonwealth 10 33 6 85 3 48 Federal 710 52 119 3 591 22 Total 720 85 126
5. SERIAL AIR WIM REVIEWED DATE TSJ 04 14 D 3 Q VERSAR Appendix D ARLINGTON COUNTY WET WEATHER SCREENING FLOATABLES MONITORING Sample Collection Crew ___ ___ Date Time Site 1 Name Address Site 2 Name Address Gross Characterization of Net Contents Total Wt Tare Wt Al Glass Plastic Plastic cans bottles bottles bags Site 1 Site 2 plastic Styrofoam Est Wt organic debris Est Wt bedload material pieces amp paper seeds leaves sticks kg bark kg Site 1 Site 2 Photodocumentation Site 1 Site 2 Pipe characterization Scum Oil Other floatable material not captured by net Comments Q VERSAR Appendix E APPENDIX E CHAIN OF CUSTODY FORM E 1 Q VERSAR Appendix E E 2 5 MARTEL CHA N OF CUSTODY SAMPLE INFORMA TION FORM Martel Laboratories ps Inc 1025 Cromwell Bridge Road Baltimore MD 21286 410 825 7790 FAX 410 821 1054 MARTEL Log Client Code Sampler Client Name Phone FAX Project Name Client Address Contract P O Number Invoice Address Sample Turnaround Time Station No Container Description Potentially Hof Sample ID Station Location Matrix Preservation Status Hazardous Containers Date Time Analyses Required Comments Cooler Receipt Information LAB USE ONLY Suffi
6. Type of waste check all that apply 0 Garbage J Construction materials _ Hazardous materials D2 Dumpster condition check all that apply 0 No cover Lid is open _ Damaged poor condition Leaking or evidence of leakage stains on ground _ Overflowin D3 Is the dumpster located near a storm drain inlet Y 1 N L Can t Tell If yes are runoff diversion methods berms curbs lacking L Y Can t Tell E PHYSICAL PLANT N A Skip to part Observed Pollution Source El Building Approximate age yrs Condition of surfaces 0 Clean 0 Stained Dirty 0 Damaged Evidence that maintenance results in discharge to storm drains staining discoloration Y C N Don t know Index O denotes potential pollution source al denotes confirmed polluter evidence was seen A 3 Q VERSAR Appendix A Hotspot Site Investigation E2 Parking Lot Approximate age yrs Condition 7 Clean J Stained Dirty Breaking up Surface material 0 Paved Concrete 0 Gravel 0 Permeable Don t know Do downspouts discharge to impervious surface Y IN Don t know None visible Are downspouts directly connected to storm drains LIN Don t know G2 Are private storm drains located at the facility J N 0 Unknown Is trash present in gutters leading to storm drains If so complete the index below Index Rating for Accumulation in Gutters Sediment 02 13 Organic mat
7. common sense during electrical storms and or when severe conditions e g high wind hail develop The safety of field staff overrides all other considerations Storm sewers contain a variety of water borne bacteria and other harmful chemicals Wash hands or use anti bacterial wipes or hand gels liberally especially prior to lunch breaks etc C1 CONDUCT All field staff are expected to Understand and comply with health and safety policies Each employee is not only responsible and accountable for his her own actions but for those others around him her All employees shall show professional courtesy to fellow employees clients subcontractors regulators and visitors Understand and follow good health and safety practices Horseplay practical joking inattention to work or other inappropriate accident causing behavior will not be tolerated Smoking eating drinking and chewing shall be conducted only in designated areas Use of alcohol or controlled substances is prohibited While traveling to and from the job site employees shall obey all federal state and local regulations regarding seat belt use all traffic laws and any other laws regarding proper conduct in public areas C2 PERSONAL PROTECTIVE EQUIPMENT PPE Engineering and administrative controls will be used as the primary means of exposure control as required by OSHA standards However PPE may also be necessary to further mini mize potential employee exp
8. cover 2 points 30 65 cover 1 5 points 10 30 cover 1 point lt 10 cover 0 5 points Step 4 Determine the age of each property by merging Real Estate tables and joining to the Property Layer A Building Age score will be assigned to each property using the following scoring system Built before 1960 3 points Built between 1960 and 1980 2 points Built after 1980 1 point No building age 0 points Step 5 Determine the property class of each property by joining the Real Estate Inventory table with the Property layer Property classes associated with the auto industry 253 and 254 warehouses 251 retail strips 211 neighborhood centers 214 fast food 216 and non fast food restaurants 212 will be considered high priority Property classes associated with commercial parking 210 and other general commercial activities 215 will be considered medium priority All other property classes will be considered low priority A Property Class score will be assigned to each property using the following scoring system e Property class is either 211 212 214 216 251 253 or 254 3 points 211 Retail strip 212 Restaurant eating facility 214 Neighborhood Center 216 Fast Food 251 Warehouse 253 Service station 254 Auto dealership Q VERSAR Site Selection and Priority Determination e Property class is either 210 or 215 2 points 210 General Comm Parking 215 Gen Comm othe
9. for screening VERSAR Site Selection Protocol Legend e Potential Target Outfalls o Storm Water Junctions Storm Water Mains 0 0 03 0 06 0 09 0 12 Miles Figure 2 1 Shirlington Village commercial district target outfalls 2 2 Q VERSAR Site Selection Protocol e Potentiall Screening Locations o Storm Water Junctions Storm Water Mains Connects to FMR West 0 0 0250 05 0 1 0 15 0 2 Miles Figure 2 2 South Four Mile Run Drive Shirlington Road industrial area north target outfalls 2 3 Q VERSAR Site Selection Protocol Four Mile Run Industrial Area West WON ol sloeuuoo Legend Potential Target Outfalls o Storm Water Junctions Storm Water Mains 0 0 04 0 08 0 16 0 24 0 32 Miles Figure 2 3 South Four Mile Run Drive industrial area west target outfalls 2 4 Q VERSAR Field Protocol 3 0 FIELD PROTOCOL 31 BACKGROUND Dry weather MS4 screening programs involve monitoring both physical and chemical characteristics of dry weather flows Physical indicators of a potentially improper discharge are often evident even when flow is not present such indicators include outfall damage deposits or stains unfavorable colors or odors in plunge pools deposits of material in receiving channels and algal growth in pipes Physical indicators in flowing water include odor color turbidity and the presence of floating material such as oil sewage sud
10. nature of environmental consulting often times requires the investigation of hazardous substances or wastes whose identity is not known Because of the serious personal and environmental consequences of unintentional release of chemicals very specific health and safety procedures must be implemented to monitor ambient conditions mitigate releases to the environment and protect workers from exposure Most of these procedures dovetail with site investigation sampling and remediation techniques outlined by EPA policy and should be included in the project comprehensive work plan C6 BLOODBORNE PATHOGENS Exposure to bloodborne pathogens BBP is possible in the case of certain emergency situations Personnel may be exposed to body fluids such as blood saliva vomit mucus or others These fluids could contain pathogens that have the potential for causing disease in humans Should personnel be required to administer life saving procedures such as CPR the following procedures will be followed to minimize the potential for exposure 1 Wear disposable gloves when hand contact with blood mucus membranes non intact skin or other potentially infectious materials could be involved 2 Use disposable mouthpieces pocket masks or other ventilation devices for administering artificial ventilation 3 Wash hands with soap and water after administering first aid 4 In the case of eye contact flush eyes using an eye wash for at least 15 minutes 5 Re
11. respiratory arrest e Slowed pulse or cardiac arrest e Irrational or stuporous state and e Muscular rigidity First aid for severe hypothermia includes handling the victim very gently rough handling may set off an irregular heart beat Do not attempt to re warm the severely hypothermic victim re warming may cause the development of an irregular heart beat Severe hypothermia is a medical emergency and the victim will be transported to the hospital immediately Prevention of cold stress is a function of whole body protection Adequate insulated clothing will be worn when the air temperature drops below 50 F Reduced work periods may be necessary in extreme conditions to allow adequate periods in a warm area C 8 Q VERSAR APPENDIX D WET WEATHER SCREENING FIELD DATA SHEETS Appendix D Q VERSAR Appendix D D 2 Q VERSAR Appendix D STORM EVENT ARLINGTON COUNTY WET WEATHER SCREENING FIELD DATA CREW Setup Comp STATION YEAR MONTH_DAY SVC AREA ID STORM DURATION hr SAMPLE INTERVAL min SAMPLE BEGIN TIME TOTAL STORM PRECIP in SAMPLE END SLOPE DIAMETER SAMPLE COLLECTION DATA CONSTRUC MAT L ROUGHNESS FIRST FLUSH SAMPLES DATE TIME OF COLLECTION HYDROGRAPH COMPOSITE INFORMATION COMPOSITE SAMPLES DATE TIME OF COLLECTION Bottle Time Interval discharge c Discrete vol INSERT TYPE MANHOLE ID LATITUDE LONGITUDE SAMPLER SERIAL MODULE
12. 15 594 7 ncludes Arlington National Cemetery 10 3 Direct drainage into streams Direct drainage into streams was determined with heads up digitizing using the 2011 topography to determine the areas Direct drainage 15 broken into three categories a Direct drainage Forest Streams forested area that drains directly into streams b Direct Drainage Streams non forested area that drains directly into streams and does not drain into any portion of Arlington County s MS4 system c Direct Drainage Private Streams Areas that have privately owned storm sewer systems that drain directly into a stream and does not drain into any portion of Arlington County s MS4 system Facility Site Impervious Pervious Area Area Area Acres Acres Acres Forest 0 0 0 DD Forest Streams 484 75 6 36 478 39 DD Streams 548 57 38 25 480 32 DD Private Streams 303 71 45 20 248 51 Total 1337 63 89 81 1207 22 1 Although DEQ guidance states that any forest land including forest land that drains to the MS4 can be excluded from the MS4 service area this situation does not exist in Arlington Arlington s forest lands are in stream valleys with direct drainage to the stream There is a very small portion lt 1 acre of forest land that drains to the GW Parkway a permitted property and this small forest area is included in the numbers above for simplicity 11 Examples of each type of direct draina
13. Appendix F County Property with Greater than Two Acres High priority municipal facilities and on County properties with greater than 2 acres of impervious surface with the number of stormwater inlets to have Drain to Stream markers installed Facilities with greater than 2 acres of impervious surface Arlington Health Center Barcroft Park Bluemont Park Fairlington Community Center Fort Ethan Allen Park Four Mile Run Park And Wpc Plant Glencarlyn Park Greenbrier Park Long Bridge Park Lubber Run Park Quincy Park Shirlington Park Thomas Jefferson Community Center Trade Center Virginia Highlands Park Walter Reed Community Center Water Pollution Control Plant High Priority Municipal Facilities Arlington County Trades Center North Side Salt Storage Facility 26 St Leaf Mulch Storage and Distribution Center Department of Parks and Recreation Nursery Quincy Park Recycling Center ART Bus Facility Water Pollution Control Plant is covered under a separate MS4 permit and will not be inspected as part of this permit Appendix G Arlington County Dry Weather Screening Plan ARLINGTON COUNTY DRY WEATHER SCREENING PROGRAM SITE SELECTION AND SCREENING PLAN Prepared for Arlington County Department of Environmental Services Office of Sustainability and Environmental Management 2201 Clarendon Blvd Suite 705 Arlingto
14. Colors Floatables Oil Sheen Suds Excessive Poor pool quality Algae Other Comments O L Brown Orange Green Other Pipe algae growth Comments O L Aluminum 0 Glass bottles 0 Plastic bottles O Paper O Styrofoam Comments SECTION 6 OVERALL OUTFALL CHARACTERIZATION OF ILLICIT DISCHARGE POTENTIAL Unlikely L Suspect gt 1 Section 4 indicator with a severity of 3 C Potential presence of gt 2 Section 5 indicators L Obvious gt 1 WQ indicator SECTION 7 NON ILLICIT DISCHARGE CONCERNS Form adapted from Brown et al 2004 C 4 Appendix H Arlington County Wet Weather Screening Plan ARLINGTON COUNTY WET WEATHER AND HIGH RISK SCREENING PROGRAM SITE SELECTION AND SCREENING PLAN Prepared for Arlington County Department of Environmental Services Office of Sustainability and Environmental Management 2201 Clarendon Blvd Suite 705 Arlington VA 22201 Prepared by Versar Inc 9200 Rumsey Road Columbia MD 21045 June 11 2014 VERSAR Table of Contents TABLE OF CONTENTS Page 10 INTRODUCTION AND PURPOSE 0ss0r000s0n0nnesnsonesnssnsennsnnennsonsnnennsnnssnssnsennsonennennse 1 1 2 0 SITE SELECTION AND PRIORITY DETERMINATION 2 1 2 1 GENERAL FACTORS FOR IDENTIFYING CANDIDATE SITES 2 1 A A 2 1 212 Parking Lot At 2 1 2 1 3 O na 2 2 2 1 Property Class cm 2 2 2 2 SITE SELECTION PR
15. Nitrate EN mg L Fluoride EE mg L Nitrite mg L Ammonia mg L Phosphorus mg L Detergents mg L pH oe ae pH Units Form adapted from Brown et al 2004 C 3 VERSAR Appendix Page 2 of 2 Arlington County VA Dry Weather Screening Outfall ID Today s date SECTION 4 PHYSICAL INDICATORS FOR FLOWING OUTFALLS ONLY CHECK if INDICATOR Present DESCRIPTION O Sewage Rancid sour 0 Petroleum gas Sulfide L Chemical Other Relative Severity 1 Faint O 2 Easily detected 3 Noticeable from a distance Clear Brown O Gray Yellow Green O Orange Red Other Relative Severity 1 za colors e sample bottle O 2 Clearly visible in sample bottle O 3 Clearly visible in outfall flow O See severity Turbidity Relative Severity 0 1 Slight cloudiness O 2 Cloudy 3 Opaque O 0 Sewage Toilet Paper etc Suds Petroleum oil sheen Floatables Relative Severity 0 1 Few slight 2 Some O 3 Widespread SECTION 5 PHYSICAL INDICATORS FOR BOTH FLOWING AND NON FLOWING OUTFALLS CHECK DESCRIPTION INDICATOR if Present COMMENTS Spalling Cracking or Chipping Peeling Paint O Corrosion Outfall Damage Comments O Flow Line Paint Deposits Stains Comments O O Excessive Partially Inhibited Totally Inhibited Abnormal Vegetation Comments Odors
16. OTOCO coincida 2 2 2 2 1 Desktop GIS Site Identification aaa oie 2 2 2 2 2 High Risk Commercial and Non Permitted Industrial Facilities 2 4 2 2 3 Stormwater Infrastructure Verification using GIS esses 2 4 2 2 4 Preliminary Site List Preparatioti siete redes HO Data e 2 5 2 3 FIELD RECONNAISSANCE PROTOCOL Nb 2 5 3 0 FIELD PROTOCOL FOR WET WEATHER SCREENING eerte 3 1 3 1 SAMPLING METHODS cours 3 1 Station Prepatati N tacita 3 1 3 12 o A mU 3 1 SJ 3 2 3 2 ANALYTES 3 3 435 SAMPLING FREQUENCY sans 3 3 3 4 ANTECEDENT DRY PERIOD AND RAINFALL CRITERIA 3 3 33 HEALTH AND SAFETY di 3 4 40 DATA MANAGEMENT QUALITY 4 1 41 DOCUMENTATION OF FIELD MONITORING eee 4 1 42 CHAIN OF CUSTODY nissen ade 4 1 43 ISCO MODEL 6712C PORTABLE AUTOMATED SAMPLER 4 0 NOTIFICATION usa 5 1 60 REFERENCES 6 1 APPENDICES A FIELD RECONNAISSANCE DATA SHEET 2ur00s000s00ssnnesnssonsonssnnsonsnnsnssnnsnnnennnnnnennennne A 1 B EQUIPMENT INSTALLATION OPERATION AND SAMPLING PROCEDURES B 1 C HEALTH AND SAFETY GUIDANCE FOR WET WEATHER SCREENING FIELD 111 VERSAR Table of Contents TABLE OF CONTENTS
17. P 0 12 abs 2 1 69 abs 0 02 e NOTE To convert test results to ppm PO4 multiply test result by 3 06 Detergents Fill zero test tube in detergents test kit with distilled water and wipe dry Insert into sample cell compartment Press and hold button until display reads then 0 00 1 Rinse red tipped dropper bottle with sample 3 times then fill to line with sample 2 While holding ampoule in vertical position snap upper tip using tip breaking tool Invert ampoule and position open end over open dropper bottle Snap upper tip and allow to drain into dropper bottle 4 dropper bottle and shake vigorously with thumb on red cap for 30 seconds Loosen and re tighten cap and then allow to stand undisturbed for 1 minute Layers should separate 6 Remove red cap and slowly invert over a clean test tube Squeeze bottle until all of the clear chloroform layer is in test tube Remaining blue liquid should be disposed of and dropper bottle thoroughly cleaned before next sample 7 Wipe dry and insert into meter Allow test tube to stand undisturbed for 4 minutes 8 Press and release button reading will appear immediately Do NOT hold down button or you will re zero meter FL700 Fluoride Meter Calibration Calibrate meter in the low range 0 to 5 ppm for outfall screening 1 Prepare 0 5 ppm fluoride solution by mixing 10ml of 1 ppm fluoride solution with 10ml of DI water Pour solution in fluoride me
18. Parameter Detection Limit Exceedance Criterion E Coli 1 col 100mL 1173 col 100mL TPHO 5 mg L 15 mg L Nitrate and nitrite 0 02 mg L 0 68 mg L Ammonia 0 2 mg L 19 mg L TSS 1 mg L 100 mg L COD 10 mg L 120 mg L Total phosphorus 0 01 mg L 2 mg L Total Kjeldahl nitrogen 0 5 mg L 1 5 mg L Zinc 20 ug L 120 ug L Cadmium 2 ug L 3 9 ug L Copper 2 ug L 13 Lead 2 ug L 120 ug L Chromium 2 ug L 570 ug L Nickel 2 ug L 180 pg L Hardness 1 mg L N A pH lt 6 or gt 9 pH units Specific Conductivity Virginia State Water Control Board 2009 Virginia State Water Control Board 2011 Value cannot be exceeded in more than 10 of samples in assessment period N A No EPA or Virginia acute standard available 5 1 Q VERSAR Notification 5 2 Q VERSAR References 6 0 REFERENCES Environmental Water Resources Institute 2007 ASCE Guideline for Monitoring Stormwater Gross Solids American Society of Civil Engineers Reston VA Draft June USEPA 2005 Unified Subwatershed And Site Reconnaissance A User s Manual Version 2 0 Prepared for Office of Water Management U S Environmental Protection Agency by Center for Watershed Protection Ellicott City MD USEPA 2002 Urban Stormwater BMP Performance Monitoring Guidance Manual for Meeting the National Stormwater BMP Database Requirements EPA 821 B 02 001 U S Environmental Pro
19. SAR Data Management Quality Control VERSAR References 5 0 REFERENCES Brown E Caraco and Pitt 2004 Illicit Discharge Detection and Elimination A Guidance Manual for Program Development and Technical Assessments Center for Watershed Protection Ellicott City MD October Pitt R Lalor Field Adrian and Barb 1993 A User s Guide for the Assessment of Non Stormwater Dischargers into Separate Storm Drainage Systems EPA 600 R 92 238 Risk Reduction Engineering Laboratory U S EPA Cincinnati OH 5 1 Q VERSAR References Q VERSAR Appendix A APPENDIX A FIELD EQUIPMENT CHECKLIST Q VERSAR Appendix A VERSAR Appendix A ARLINGTON COUNTY EQUIPMENT CHECKLIST Table C 1 Checklist of field equipment and supplies for dry weather screening Item Field maps large and small scale of study area GPS antenna GPS display Spare GPS Batteries Field data sheets spare on waterproof paper Pencils Measuring tape Flashlight Insect repellent Chest waders Knee boots First aid kit Outfall water quality screening kit s and procedure manuals Calibrated sonde and display Backpack Orange reflective vests Work gloves County letter of introduction Digital camera Spare batteries for digital camera Swing sampler and extender pole Polypropylene bottles for sharps waste Polypropylene bo
20. ate Extent Stormwater Mains ArlingtonData mdb 2013 Stormwater Junctions and Outfalls ArlingtonData mdb StormWater StormWater node 2013 County County Watersheds ArlingtonData mdb Watershed poly 2013 ArlingtonData mdb GLUP GLUP 2013 Stormwater Mains Table ArlingtonData mdb IMP CW STORM MAINS 2013 Stormwater Junctions and ArlingtonData mdb IMP CW STORMS NODES N A 2013 County Outfalls Table rane ce oan C Table DataExtract2013 mdb ReCommercial N A 2013 County ne O na Table DataExtract2013 mdb ResidentialParcels N A 2013 County Condo Real Estate Table DataExtract2013 mdb 2013 Real Estate Property Addresses DataExtract2013 mdb RePropertyAddress N A 2013 County County Aerial Imagery _ arl mosaic 2011 Iftsid 2011 Denotes Table Denotes MrSID file not associated with a geodatabase VERSAR Site Selection and Priority Determination 2 8 Q VERSAR Field Protocol for Wet Weather Screening 3 0 FIELD PROTOCOL FOR WET WEATHER SCREENING This section details the water chemistry and floatables protocols to be followed during implementation of wet weather screening This section consists of descriptions of sampling equipment analytes sampling frequency and antecedent conditions Specific instructions for operating sampling equipment and health and safety procedures are provided in Appendix B and Appendix C respectively 31 SAMPLING METHODS 3 1 1 Station Preparati
21. bles to rise to top of liquid 8 Wipe ampoule completely dry and wait 15 minutes for color development Continue with directions under Reading Sample Nitrate 1 Using the syringe or pipet measure and dispense 2 mL of the sample to be tested into the reaction tube Dilute to the 15 mL mark with distilled water 2 Empty the contents of one Cadmium Foil Pack into the reaction tube Cap the reaction tube and shake it vigorously for exactly 3 minutes Allow the sample to sit undisturbed for 2 minutes 3 Pour 10 mL of the treated sample into the empty 25 mL sample cup being careful not to transfer any cadmium particles to the sample cup 4 Place ampoule in sample cup and snap tip by pressing on side of cup Allow ampoule to fill 1t will leave a small bubble which facilitates mixing 5 Invert ampoule several times to mix allowing bubble to travel from end to end each time Tap ampoule on hard surface to cause any small bubbles to rise to top of liquid 6 Dry the ampoule and wait 10 minutes for color development 7 Insert the ampoule into the photometer flat end first and obtain a test result Nitrite 1 the sample cup to the 25 mL mark with the sample to be tested B 4 VERSAR Appendix B Place the ampoule tip first into the sample cup Snap the tip The ampoule will fill leaving a bubble for mixing To mix the ampoule invert it several times allowing the bubble to travel from end to end Dry the ampoule a
22. cient ice Yes No If No temp Sample containers pres d Yes No If No explain Custody Seal present intact Yes No Initials Date Q VERSAR Appendix E E 4 Appendix MS4 Service Area Delineation Method Appendix A Method Used to Determine MS4 Service Area Arlington County has estimated is MS4 Service area using the County Boundary in the Geographic Information System GIS and subtracting the following in accordance with DEQ guidance 1 Permitted Facilities including VDOT 2 Other State and Federal owned land not permitted 3 Forests and direct drainage into streams Summary table lands subtracted from MS4 service area Category Total Area Impervious Area Pervious Area Acres Acres Acres Arlington County Area 16 701 04 Permitted 3 316 00 1 578 60 1 737 4 State Federal 720 85 126 15 594 7 Direct Drainage 1 337 63 89 81 1 207 22 MS4 Service Area 11 326 56 5 221 48 6 145 68 1 Permitted Facilities a Parcels were identified in the tax records and the entire parcel area was subtracted from the service area regardless of drainage patterns Impervious Pervious Facility Area Acres Area Acres Arlington County Water Pollution Control Facilit 18 95 22 34 Arlington Hall NFATC 84 94 29 89 55 05 George Mason University Ballston Campus 7 59 4 64 2 95 George Washington Memorial Parkway 626 56 95 53 531 02 Joint Base Myer Henderson Hall 280 79 132 31 148 48
23. cing a compact automated sampler within the manhole or at grade adjacent to the manhole Verify the diameter of the pipe and depth of the hole to determine the need for personnel trained and certified to work in confined spaces and to identify the required inserts for monitoring equipment spring ring scissors ring or weir Traffic control authoriza tion and training may be required Field data sheets are used to document the visual survey performed in Step 1 of the Field Reconnaissance Protocol above Appendix A A hotspot status score is calculated for each site which is based on the total number of elements tallied on the field reconnaissance data sheet Sites with the highest hotspot status scores will be considered to have the highest potential for 2 5 Q VERSAR Site Selection and Priority Determination pollutant discharge to the storm drain system Factors considered in Step 2 of the Field Reconnaissance Protocol could hinder monitoring or eliminate a site from consideration e g inaccessibility blocked infrastructure cannot deploy a sampler The final prioritized list of wet weather screening sites is prepared from hotspot status score and stormwater infrastructure suitability information obtained during field reconnaissance 2 6 LE Table 2 1 GIS layers and data to be used to select industrial commercial parcels for wet weather screening Source Areal Description Geodatabase Feature Dataset Table Feature Class File D
24. cur In the event of adverse weather conditions the Field Team Leader will determine if work can continue without endangering the health and safety of site personnel C11 HEAT AND COLD STRESS This section is applicable to all personnel involved in field work as well as any other workers who may be exposed to temperature stress conditions C11 1 HEAT STRESS Heat stress 15 a significant potential hazard during the warmer months Heat stress manifests itself as one of three conditions heat cramps heat exhaustion or heat stroke Heat cramps are brought about by a prolonged exposure to heat As an individual sweats water and salts are lost by the body triggering painful muscle cramps The signs and symptoms of heat cramps include e Severe muscle cramps usually in the legs and abdomen e Exhaustion often to the point of collapse and e Dizziness or periods of faintness First aid treatment includes shade rest and fluid replacement The individual will drink electrolyte replacement fluids e g Gatorade Squencher 10 K which will be made available to field personnel If the individual has not recovered within 2 hour then he she will be transported to the hospital for medical attention C 6 Q VERSAR Appendix Heat exhaustion usually occurs in a healthy individual who has been exposed to excessive heat while working or exercising Blood collects near the skin in an effort to rid the body of excess heat The signs and symp
25. ed Stored B4 Are vehicles stored and or repaired outside Y CantTell Are these vehicles lacking runoff diversion methods Y JN Tell B5 Is there evidence of spills leakage from vehicles Y JN Cant Tell B6 Are uncovered outdoor fueling areas presen Y JN Cant Tell B7 Are fueling areas directly connected to storm drains Y JN Cant Tell B8 Are vehicles washed outdoors Y Tell Does the area where vehicles are washed discharge to the storm drain JN Cant Tell OUTDOOR MATERIALS N A Skip to part D Observed Pollution Source Are loading unloading operations presen Y ON Cant Tell If yes are they uncovered and draining towards a storm drain inlet ON Cant Tell C2 Are materials stored outside Y N Can t Tell If yes are they Liquid 0 Solid Description Where are they stored _ grass dirt area _ concrete asphalt bermed area C3 Is the storage area directly or indirectly connected to storm drain circle one Y JN Cant Tell C4 Is staining or discoloration around the area visible Y JN Tell C5 Does outdoor storage area lack a cover Can t Tell C6 Are liquid materials stored without secondary containment Y JN Cant Tell C7 Are storage containers missing labels or in poor condition rusting Y Car t Tell D WASTE MANAGEMENT N A Skip to part E Observed Pollution Source D1
26. een less than 0 10 inches of rainfall in the preceding 72 hours Field crews will verify that this dry time criterion has been met before beginning field operations The field staff will obtain and gather the materials listed in Appendix A prior to field work on any given day Standard operating procedures for use calibration maintenance and quality control for all field equipment are provided in Appendix B To facilitate data collection and information management data gathered during the dry weather screening field effort will be recorded in electronic datasheets running on ArcPad 10 software Figure 3 1 In case of instrument failure data will be recorded on pre printed field data sheets Appendix C Datasheets developed by the CWP Brown et al 2004 were used as the basis for the electronic field datasheets Field crews will use this data entry form to record on site information for each outfall using a series of text boxes drop down menus and check boxes 3 2 Q VERSAR Arlington_Outfalls ug General Info 1 ea Outfall ID FMR 001 Time hen inspected Hansen y Form Comp A Hansen y Camera Blue Lumx GPS Unit GeoxXT y Photo pp Arlington_Outfalls Outfall Desc 2 gt Outfall Elevation Elevation Meas ft Suspended Hight y E Protection Rip Rap y Head Wall Cond Good y Erosion Heavy Erosion y Erosion Source
27. ening and industrial high risk monitoring program Detection Constituent units Limit Method Grab 1 SM9223B TPH mg L 5 EPAI664 Nitrate and nitrite mg L Ammonia mg L Composite 20 EPA2008 2 EPA2008 2 EPA2008 Lead ug L Chromium ug L Nickel ug L Hardness mg L 3 1 3 Floatables Floatables monitoring is be carried out at each wet weather screening location at the same sampling point 1 e in line storm sewer pipe as the water quality sampling Field teams install netting apparatus similar in design to a Net Tech Kristar Enterprises Inc Santa Rosa CA gross pollutant trap The trap consists of a support ring and removable net with 4 75 mm mesh Environmental Water Resources Institute 2007 The net may be attached directly to the scissors ring described above to provide an anchor and support The net apparatus is adjustable to enable deployment in conduits of varying standard sizes Floatable debris is collected from the net after each rain event Collected floatables are weighed to obtain total mass of material and then sorted into categories and counted Counts of material are recorded on a field data sheet 3 2 Q VERSAR Field Protocol for Wet Weather Screening 3 2 ANALYTES Pollutants to be tested consist of nutrients hydrocarbons metals bacteria and sediment Each category consists of specific pollutants that provide information about suspended material trans
28. er surfaces have been washed by a prior storm Antecedent dry periods required by discharge permits typically range from 48 hours for BMP effectiveness studies to 72 hours for standard discharge permit monitoring programs U S EPA 1992 A 72 hour antecedent dry period rainfall lt 0 03 will be observed in Arlington County s wet weather screening program 3 3 Q VERSAR Field Protocol for Wet Weather Screening Storms that are forecast to deliver 0 3 in or more of rain within 24 hours are eligible for monitoring A rainfall depth of 0 3 in represents a moderate quantity that should produce suffi cient runoff to allow automated sampling Since the goal of the program 15 to sample a short distance down network from a selected facility a moderate quantity of rain may be needed to deliver sufficient runoff The minimum rainfall depth may be revised if it affords insufficient runoff for automated sampling Eligible storms will be identified by staff meteorologists Meteorologists will notify field staff when an anticipated storm is expected to deliver at least 0 3 in of rainfall at a targeted site Rainfall depth will be estimated from regional rainfall accumulation as determined by Doppler radar or from a local rain gauge identified by the County 35 HEALTH AND SAFETY Ensuring the health and safety of field personnel is the responsibility of every member of the staff for the project The collective effort of all staff members in
29. erial 02 13 4 Litter E12 13 14 INITIAL HOTSPOT STATUS INDEX RESULTS Nota hotspot fewer than 5 circles and no boxes checked Potential hotspot 5 to 10 circles but no boxes checked Confirmed hotspot 10 to 15 circles and or 1 box checked _ Severe hotspot gt 15 circles and or 2 or more boxes checked Follow up Action Refer for immediate enforcement Suggest follow up on site inspection Test for illicit discharge Include in future education effort Check to see if hotspot is an NPDES non filer Onsite non residential retrofit Pervious area restoration complete PAA sheet and record Unique Site ID here Schedule a review of storm water pollution prevention plan u a Notes A a _ u u 4 Q VERSAR Appendix B APPENDIX EQUIPMENT INSTALLATION OPERATION AND SAMPLING PROCEDURES Q VERSAR Appendix B B 2 VERSAR Appendix B WET WEATHER SCREENING EQUIPMENT The automated sampler to be employed will be an ISCO Model 6712C compact portable sampler capable of collecting up to 24 500 mL water samples in polyethylene bottles The size of the samples and number of bottles will assure that several bottles will be filled corresponding to all portions of the storm event hydrograph The automated sampler will be transported to the sampling sites prior to the storm event and removed after event conclusion Th
30. es of a runoff event One grab sample and one composite sample is obtained at each sampling point and transported to an approved Virginia certified analytical laboratory to be tested for the analytes listed in Table 3 1 The grab sample is tested for E coli and TPH The composite automated sample is tested for the remaining parameters Samples obtained by grab and automated means are transferred to laboratory bottles of the required type and containing appropriate preservative Grab samples are taken remotely by using an extender pole with swing sampler attached A Teflon pitcher is attached to the swing sampler Automated samplers ISCO model 6712C or equivalent are attached to the appropriate pipe leading into the MS4 from the selected site of 3 1 Q VERSAR Field Protocol for Wet Weather Screening interest The pipe should be as far upstream in the MS4 as possible so that the parcel is isolated from other pollutant inputs Flow rates are logged at all sampling points to enable flow weighted compositing of samples The flow logging apparatus 15 secured e g with scissors ring within the pipe for the duration of screening at a site i e four storms Individual samples are com bined into a discharge volume weighted composite sample Field technicians measure composite pH and specific conductivity before delivering samples to the laboratory Table 3 1 Laboratory analytes and detection limits for Arlington County s wet weather scre
31. f time spent considering unlikely sites Site selection using GIS employs a two tiered site characterization method that 1 targets commercial and industrial facilities and 2 targets specific parcels that have the greatest potential for contributing polluted runoff via ranking using scoring criteria Properties containing businesses that typically have a high probability of generating polluted runoff including automotive businesses and properties located within the Four Mile Run and Lower Long Branch watersheds will be given higher weighting than other properties Properties containing older buildings and properties with a large amount of parking lot area will also be given more weight Table 2 1 lists Arlington County s GIS coverages and data sets relevant to this effort The desktop GIS site selection procedure 15 detailed below Step 1 Exclude secure federal facilities such as Reagan International Airport and the Pentagon Q VERSAR Site Selection and Priority Determination Step 2 Select only parcels that contain the following land use types Service Commercial 201 General Commercial 202 Service Industry 203 Medium Density Mixed Use 501 High Medium Residential Mixed Use 502 Step 3 Intersect the Property layer with the Parking Lot layer and calculate the percentage of each parcel that is covered by parking lot A Parking Lot Area score will be assigned to each property using the following scoring system gt 65
32. g frost frost bite and freezing or a general cooling hypothermia Personnel working outdoors in temperatures at or below freezing may be subject to local cooling Areas of the body that have a high surface area to volume ratio such as fingers toes and ears are the most susceptible The three categories of local cooling include e Frost nip characterized by a blanching or whitening of the skin e Frost bite skin has a waxy or white appearance and is firm to the touch but the tissue beneath is resilient and e Freezing skin tissue is cold pale and solid Q VERSAR Appendix Frost nip and frost bite first aid includes covering the affected area with warmth and retreating to a warm area Frozen tissue 15 medical emergency and the victim will be transported to the hospital immediately General cooling hypothermia occurs when exposure to cold reduces body temperature With prolonged exposure the body becomes unable to maintain its proper internal temperature Without treatment hypothermia will lead to stupor collapse and death The signs and symptoms of mild hypothermia include e Shivering e Numbness and e Drowsiness First aid for mild hypothermia includes using heat to raise the individual s body temperature Heat may be applied to the victim in the form of heat packs hot water bottles and blankets The signs and symptoms of severe hypothermia include e Unconsciousness e Slowed respiration or
33. g a healthy and safe work environment will minimize or eliminate the potential for accidents The safety of field staff overrides all other considerations In general the following safety protocol will be followed to protect the field staff 1 Bring mobile phone and first aid kit on all field site visits 2 Exercise caution when encountering ants stinging insects ticks snakes raccoons geese mice rats and the like as well as off leash pets 3 Many outfalls are located in remote areas that may be near gathering places for homeless or transient individuals Do not enter a potentially hostile area 3 4 VERSAR Field Protocol 4 Exercise caution when accessing outfall areas and encountering uneven or slippery terrain rip rap steep slopes and possible sharp objects such as broken glass gabion baskets metal fencing needles or any debris with sharp or pointed edges or corners 5 Perform field work in teams of two whenever possible 6 Storm sewer outfalls contain a variety of waterborne bacteria and other harmful chemicals Wash hands or use antibacterial wipes or hand gels liberally especially prior to lunch breaks etc 7 Any work in confined spaces will be performed by technicians who are appropriatel y trained and certified for such work 3 5 Q VERSAR Field Protocol 3 6 VERSAR Data Management Quality Control 40 DATA MANAGEMENT QUALITY CONTROL Data will be captured electronically in the fie
34. ge Direct drainage Forest Streams forested areas that drain directly into streams Example shown below Direct Drainage Forested 12 Direct Drainage Streams non forested area that drains directly into streams and does not drain into any portion of Arlington County s MS4 system 13 Direct Drainage Private Streams Areas that have privately owned storm sewer systems that drain directly into a stream and does not drain into any portion of Arlington County s MS4 system 14
35. ion line and stainless steel low flow strainer Thel mar weir Ratchet set English Sensor carrier Cable ties Confined spaces entry certified personnel see Appendix C and apparatus are to be used if installation is to be within a pipe inlet to a below grade junction pipes greater than gt 15 diameter only for pipes less than 15 see step 3 1 Measure outfall pipe and assemble scissors ring with designated extensions Retract brace by rotating nut counter clockwise with ratchet Install sensor carrier and attach bubbler line to sensor carrier Attach suction line to low flow strainer and attach strainer to sensor carrier using cable ties Insert scissors ring in pipe just upstream of outlet orifice orient scissors ring so that metal bubbler line outlet is in the invert of pipe pointing downstream Inthe case of 15 diameter or less pipes a remote street level installation tool can be used Sensor carrier strainer and tubing are to be attached as described above The tubing can be tied off at the upper step of the closed manhole or threaded through manhole cover and secured on nearby brush until such time as storm event is monitored B2 PREPARATION FOR STORM EVENT Materials Equipment and Supplies qd Programmable automated sampler equipped with flow module 24 500 mL polypropylene bottle configuration Pro hanger and harness for automated sampler Ice B 4 Q VERSAR Appendix B 5
36. is sampler is of a size and configuration that will allow it to be inserted and retrieved from a manhole and suspended using a pro hanger and appropriate harness for manholes 18 to 24 inches in diameter Alternatively the samplers may be secured using rebar loops inserted into the ground and combination bicycle locks to discourage theft During the event each sampler will be covered by a lid to protect it from the effects of weather The samplers will be powered by 12 volt Ni Cd rechargeable batteries Figure 1 Automated sampler placed in manhole using hanger and spring ring Attached to all automated samplers will be an ISCO Model 730 bubbler flow module that will log the water flow rate in the pipes of interest The flow module measures water level within the pipe based on overlying water pressure exerted on bubbles pumped from the module that exit the bubbler tubing at the base of the pipe Flow rates are calculated from the water level measurements based on Manning s Equation The bubbler line is mounted to a spring ring that 15 secured within the pipe B 3 Q VERSAR Appendix B B1 ON SITE EQUIPMENT INSTALLATION Materials Equipment and Supplies 1 SA de Confined Spaces entry apparatus if necessary consisting of tripod winch lanyard harness oxygen meter Scissors ring or spring ring with appropriate extensions where applicable Remote installation tool Bubbler line Suct
37. iterion Q VERSAR Site Selection and Priority Determination 2 1 3 Building Age Generally the older a commercial or industrial facility 1s the greater the likelihood of pollution problems developing onsite Building age 15 used to identify those facilities that may not have modern stormwater controls have older sanitary sewer connections or are in a state of disrepair and may be leaching pollutants from onsite structures 2 1 4 Property Class The class of commercial and industrial properties is used to specifically identify types of businesses that are of concern to the County and which are more likely to contribute pollutant loading to the MS4 Commercial properties that have been identified by the County include retail shopping centers restaurants and auto related businesses which are specified in the County s permit are included in this ranking step 2 2 SITE SELECTION PROTOCOL Sites that will undergo wet weather screening are drawn from industrial and commercial facilities identified using a desktop GIS selection protocol and b facility lists maintained by the County 2 2 1 Desktop GIS Site Identification The goal of the GIS based site selection process is to establish a systematic strategy for targeting facilities or sites that have the greatest potential for contributing significant pollutant loading to the MS4 This process increases efficiency of finding possible pollution sources while reducing the amount of staf
38. ld using a data entry form designed specif ically for this effort that is operated with a hand held computer The data entry form is configured to display prompts that prevent the user from leaving key data fields blank The template stores electronic data in a geodatabase The data fields include those used for the county s dry weather screening efforts If the hand held unit fails field crews will complete hardcopy field datasheets Appendix C The electronic datasheet will speed data collection and eliminate the need for post field data entry thereby saving time and preventing errors introduced by data entry mistakes At the conclusion of each field day data recorded on the handheld unit will be backed up to a desktop computer and uploaded to a network computer system This daily backup will lessen the chances of losing data due to theft breakage loss or other failure of the handheld computer If hardcopy field data sheets have been used copies will be stored in a secure location and infor mation will be entered directly into the geodatabase via ArcPad The list of outfall sites visited will be checked periodically against the target list of outfalls to be screened to be sure that none have been missed and no data have been lost A separate field data sheet will be used to record data related to tracking down the source of an improper discharge Appendix C Copies of these field data sheets will be stored in a secure location Q VER
39. move garments contacted by blood or other body fluids as soon as possible 6 Do not eat drink smoke or handle contact lenses in areas with possible BBP exposure and 7 Persons cleaning up an accident scene should not pick up broken glass or other sharp objects by hand AII clothes and other items at the first aid scene should be safely secured prior to leaving Employees who may have been exposed to BBPs should report the incident at once C7 REMOTE AREAS The sampling team may be located in areas not readily accessible by vehicle Radio communication will be maintained from the sampling team to a base station in the event of an emergency C 5 Q VERSAR Appendix HEAVY LIFTING It may be necessary to carry sampling equipment e g coolers sampling containers and equipment during the course of the field activities Care must be taken to avoid injury while carrying equipment to the sampling locations C9 HAND TOOLS Some of the field activities and sampling procedures may require the use of hand tools with sharp edges including machetes scissors clippers knives and razor blades Care must be taken during their use to prevent injuries from cuts C10 WEATHER RELATED HAZARDS Weather related hazards include the potential for heat or cold stress electrical storms treacherous weather related working conditions high winds and limited visibility These hazards correlate with the season in which site activities oc
40. n VA 22201 Prepared by Versar Inc 9200 Rumsey Road Columbia MD 21045 March 14 2014 Q VERSAR Table of Contents TABLE OF CONTENTS Page 1 0 INTRODUCTION coiodi niociotocinnicniocininiocanicccaniocincanincicniocicinnaninciscindocioiacincicodacicenccicnacici n 1 1 2 0 SITE SELECTION PROTOCOL 00000000000000000000000000000000000000000000000000000000000 0000 2 1 3 0 FIELD PROTOCOL 020080585000 00000050406 3 1 3 1 BACKGROUND 3 1 3 2 SELECTED ANALYTES ss ad 3 1 3 3 DRY WEATHER SCREENING PROCEDURE ctn 3 2 3 4 TRACKING DOWN THE SOURCE OF AN IMPROPER DISCHARGE 3 4 3 5 HEALTH AND 5 3 4 4 0 DATA MANAGEMENT QUALITY CONTROL 2020000000000000000000000000000000000000 4 1 5 0 REFERENCES wisssscsccccsccssccsstecccessccsacesstesccacceccaccssteccceseccsscecscocececcsccacescsececeseccssc ssvecccssavs 5 1 APPENDICES A FIELD EQUIPMENT CHECKLIST A 1 B STANDARD OPERATING PROCEDURES FOR DRY WEATHER SCREENING B 1 C DATA SHEETS FOR DRY WEATHER SCREENINQG cernens C 1 iii Q VERSAR Table of Contents 1v VERSAR Introduction 10 INTRODUCTION This plan establishes the screening methodology for use in implementing 1 B 2 m 1 d of Arlington County s Municipal Separate Storm Sewer S
41. nd Safety may be found in Appendix C including information on field staff conduct personal protective equipment confined space entry danger ous flora and fauna unknown hazardous substances and wastes bloodborne pathogens remote areas hand tool safety weather related hazards and heat and cold stress 3 4 Q VERSAR Data Management Quality Control 4 0 DATA MANAGEMENT QUALITY CONTROL 4 1 DOCUMENTATION OF FIELD MONITORING Documentation of wet weather screening efforts will consist of the following e results of field reconnaissance in preparation for the wet weather screening e construction orientation and size of the MS4 conduit that is being used as the sampling point for the site of interest e the unique ID and physical location of the manhole that is being accessed if any e GPS coordinates of the manhole being accessed if it is not on Arlington County s stormwater infrastructure GIS layer e description of hardware inserted into the pipe at sampling point For storm events a dedicated data sheet Appendix D will be used to document sample location rainfall depth date of sampling initiation serial numbers of automated sampler and flow module names of field crew discrete sample interval discharge volume represented by each discrete sample proportional aliquot of discrete sample used in compositing date and time of sample composite For floatables monitoring a dedicated field data sheet is used to document the q
42. nd flow rate data name of level amp flow files will appear as sites Construct table of discharges in the usual way using flow rate data just imported and appropriate sample interval 6 Export table of discharges to another csv file e g sitename discharge date of storm csv 7 Open discharge export file in spreadsheet Copy 1st 24 bottles and times to template file The template file will automatically calculate discrete volumes volumes to add to composite bottle once the formula is corrected to reflect volume at peak discharge discrete volume 500 mL for compact sampler 8 Save the discrete volume file just created in Excel as a new file e g sitename discrete date of storm xls Print the spreadsheet and refer to it when compositing Reduce discrete volumes by a proportional amount if the total volume is greater than the capacity of the 4 L bottle 9 Use graduated cylinders to measure discrete aliquots 10 After compositing wash and rinse plastic bottles with soap 10 nitric acid solution and distilled water Note because of variations in water level in pipe over time a discrete sample may be low or nonexistent despite a measurable discharge volume represented by the discrete sample as measured by the flowmeter This is due to the fixed time frame that the sampler takes samples At the time that the sampler takes the sample there may be insufficient water in the pipe despite the fact that there was s
43. nd wait 10 minutes for color development Insert the ampoule into the photometer flat end first and obtain a reading in ppm mg Liter nitrite nitrogen NO2 N Total Phosphorus 1 2 10 Preheat the digestor to 150 Remove the cap from a Total Phosphate Vial and add 5 mL of the sample to be tested Remove the Oxidizer Powder from the storage bag Replace the flat cap on the bottle of Oxidizer Powder with the powder dispenser cap Open the plug on the top of the powder dispenser cap Position the dispenser above the vial and press the button once to dispense a single dose Securely cap the Total Phosphate vial Invert the vial several times to mix the contents Place the vial into the preheated digestor Allow the vial to heat in the digestor for 30 minutes at 150 Turn the digestor off and remove the hot vial from the digestor and place it in a rack to cool to room temperature Allow at least 30 minutes for the vial to cool e CAUTION The hot vials are under pressure and may shatter if dropped or rapidly cooled Wipe the exterior of the vial until it is clean and dry Place the vial into the photometer sample compartment and zero the instrument Remove the vial from the photometer Using the syringe with tip provided dispense 1 mL of Neutralizer Solution into the vial using care not to touch the syringe tip to sides of the vial Securely cap vial Invert the vial several times to mix the contents e If the s
44. ned space trained per sonnel The Team Leader will provide ongoing real time ambient air monitoring of the locations to be sampled to determine the need for personal protection Entry of the sampling personnel will be allowed if the following criteria are met e Oxygen level greater than 19 5 Atmospheres with oxygen concentrations less than 19 5 are considered oxygen deficient and must be treated as Immediately Dangerous to Life and Health IDLH atmospheres e Lower explosive limit LEL reading is less than 3 C4 DANGEROUS FLORA AND FAUNA During the course of field activities employees may come in contact with a wide range of dangerous or toxic animals and plants Dangerous animals may include black widow and brown recluse spiders fire ants mosquitoes and biting flies bees wasps and hornets ticks and chiggers microbial organisms e g found in water soil and air and on carrier host organisms rabid mammals and poisonous snakes Dangerous plants may include thorny plants poison ivy oak and sumac and molds mildews and fungi which may cause allergic reactions Contact with these organisms can cause effects from simple discomfort such as from thorny bush C 4 Q VERSAR Appendix scratches to severe allergic reactions and possibly death If interactions do occur take appro priate actions related to specific interaction and individual response to interaction C5 UNKNOWN HAZARDOUS SUBSTANCES AND WASTES The
45. om consideration as potential industrial sites within the industrial area and will be selected using a separate protocol Section 2 2 3 Potential sites within the Four Mile Run Industrial Area are selected separately in a parallel protocol because the County s Permit requires a facility within the area to be included in all screening efforts 2 1 GENERAL FACTORS FOR IDENTIFYING CANDIDATE SITES Categories of criteria that are used to identify potential areas for wet weather screening using the desktop GIS analysis are described below 2 1 1 Land Use Specific land use data are used to identify those industrial and commercial areas that are most likely to be the source of high levels of pollutants entering the storm drain system Specifically commercial service industry and mixed land use categories are used to target site selection efforts 2 1 2 Parking Lot Area The availability of impervious surfaces on a commercial or industrial parcel was identi fied as an indicator of pollution potential Parking areas have the potential to accumulate drips spills waste and other pollutants such as sediment and trash as a result of routine operations accidents or carelessness During precipitation events accumulated material may be transported via stormwater runoff to the storm drain system Parking lot area is used as a surrogate for extent of impervious surfaces The parking lot area as a percentage of total parcel size is used as a ranking cr
46. on An inspection of the outfall from the target facility is conducted by field staff when ancillary equipment is installed Secondary indicators of illicit non stormwater discharge are noted in the installation log Secondary indicators include presence of foul or petroleum odors buildup of stains or deposits along the wetted perimeter of the pipe that are not generally associated with stormwater runoff or presence of floatables on a debris line within the pipe Degradation of outfall material rusting or channelization of pipe is also a secondary indicator of illicit discharge The condition of catch basins or manhole structures into which field staff enter are also considered 3 1 2 Water Chemistry Sampling is conducted using both grab and automated sampling approaches USEPA 2002 The electronic automated sampler collects discrete samples of runoff at fixed intervals throughout a storm Sampling repeatedly throughout a storm is important for many pollutants because various pollutants of interest mobilize and are delivered to the MS4 at different times depending on the rate and duration of rainfall A discharge volume weighted composite sample provides an accurate representation of the overall concentration of given analyte in the runoff from a site A grab sample is taken by hand at a specific point in time during the storm s progress e g during first flush Certain parameters are at their highest concentrations during the initial stag
47. osure All employees shall dress appropriately for the tasks to be 3 Q VERSAR Appendix performed Specialized health and safety equipment including personal protective equipment monitoring equipment and other devices designed to protect the employee shall be issued to the employee on an as needed basis Employees performing field activities and certain laboratory functions have the potential of coming in contact with hazardous materials Many of these hazardous materials can cause significant injury or illness through acute or chronic exposures For field work including industrial operations all field employees are required to wear the following basic PPE e Appropriate work clothing e ANSI approved steel toed steel shank boots e ANSI approved safety glasses e ANSI approved hard hat when overhead hazards exist e Hearing Protection when appropriate e Rain Gear when appropriate C3 CONFINED SPACE ENTRY PROGRAM A confined space is any location not intended for human occupation has limited or no ventilation has the potential for containing dangerous or lethal atmospheres and has limited ingress egress OSHA has addressed confined space entry requirements and procedures in 29 CFR 1910 146 Permit Required Confined Spaces and 1926 651 Excavations Confined space entry if necessary will be performed in accordance with OSHA confined space entry procedures industry standard practices and will be performed by confi
48. our Mile Run Industrial Area Note that several of the geo referenced sites in the lists maintained by the County are located in land use areas that are not included in the categories used in the GIS desktop exercise above 2 2 3 Stormwater Infrastructure Verification using GIS The County s stormwater GIS dataset is used to examine onsite stormwater infrastructure for all properties that received a pollution potential score of 2 375 or higher from the GIS desktop analysis Section 2 2 1 and for all of the sites from the lists of County concern Section 2 2 2 Only properties that contain County owned stormwater infrastructure and a portion of the stormwater infrastructure network that originates within the candidate site are visited for a field assessment Section 2 3 to verify suitability for screening 24 Q VERSAR Site Selection and Priority Determination For the separate Four Mile Run Industrial Area site selection protocol all parcels within the area are examined for availability of infrastructure and suitability for screening 2 2 4 Preliminary Site List Preparation The protocol described above is used to prepare a preliminary list of sites for recon naissance to verify suitability for wet weather screening The list is comprised of the highest ranking sites from the GIS desktop portion of the protocol 50 and sites of County concern 50 that have favorable stormwater infrastructure as determined using GIS stormwater net
49. port contamination of impervious surfaces from heavy metals and deposition and mobiliza tion of nutrients commonly used in detergents and fertilizers 3 3 SAMPLING FREQUENCY The County s permit does not specify the sampling frequency or duration of areas of interest Wet weather sampling of MS4 service areas is intended as a screen not as a long term monitoring effort at a particular site Under this protocol screening will be performed quarterly during one year at two selected non permitted industrial or commercial facilities that are thought to be contributing excessive levels of pollutants to its MS4 Table 3 2 One of the sites will include the Four Mile Run industrial area Each quarter two areas identified on the priority list will be screened HSI 006 Strip Shopping Center 2611 Columbia Pike HSI 032 Various auto repair businesses 4068 4080 S Four July 1 2014 June 30 2015 Mile Run Dr HSI 010 Columbia Pike Shopping Center 5027 Columbia Pike July 1 2015 June 30 2016 HSI 029 Comfort Inn Pentagon 2480 S Glebe Rd HSI 022 Le Auto Services 6970 Fairfax Dr HSI 033 David s Car Wash 4148 S Four Mile Run Dr PES HSI 003 Alamo Rental 2780 Jefferson Davis Hwy HSI 031 Shirlington Self Storage 2710 5 Nelson St pay une ee 34 ANTECEDENT DRY PERIOD AND RAINFALL CRITERIA Sampling after a dry period is beneficial because it reduces the possibility that an effort will be made to sample immediately aft
50. providing a healthy and safe work environment will minimize or eliminate the potential for accidents In general the following safety protocol will be followed to protect the field staff 1 Bring and wear appropriate personal protective equipment safety vests eye protec tion steel toed shoes 2 Perform field work in teams of at least two 3 Bring cell phone and first aid kit on all field site visits 4 Exercise caution when encountering any wildlife off leash pets and hazardous plants In addition many outfalls are located in remote areas that may be near gathering places for homeless or transient individuals Do not enter a potentially hostile area Exercise caution when accessing manholes and outfall areas and when encountering uneven or slippery terrain rip rap steep slopes and possible sharp objects such as broken glass gabion baskets metal fencing needles or any debris with sharp or pointed edges or corners 5 Use common sense during electrical storms and or when severe conditions e g high wind hail develop The safety of field staff overrides all other considerations 6 Storm sewers contain a variety of water borne bacteria and other harmful chemicals Wash hands or use anti bacterial wipes or hand gels liberally especially prior to lunch breaks etc 7 Any work in confined spaces will be performed by technicians who are appropriately trained and certified for such work Additional information on Health a
51. r e other property classes 1 point Step 6 Determine if each property is located within a watershed containing a TMDL or impaired waterway of interest to the County Four Mile Run and Lower Long Branch A TMDL Watershed score will be assigned to each property using the following scoring system e Property is within the Four Mile Run or Lower Long Branch Watershed 2 points e Property is not within the Four Mile Run or Lower Long Branch Watershed 1 point Step 7 Determine an overall pollution potential score by summing the scores calculated in Steps 3 6 and normalizing the sum by the number of available categories 4 categories for properties with an associated building age 3 categories for properties without an associated building age 2 2 2 High Risk Commercial and Non Permitted Industrial Facilities Arlington County maintains a list of non permitted industrial and commercial facilities including automotive repair shops automotive body shops automotive service gas stations and dry cleaning businesses inspected by the County Fire Marshal Office along with a list of restaurants and grocery stores inspected by the County Health Department that are located within the County Properties inspected by the Fire Marshal Office and Health Department that meet the following criteria are selected for a field assessment e Property is located within the Four Mile Run or Lower Long Branch Watershed e Property is not located within the F
52. ribes site selection field reconnaissance and wet weather screening protocols for evaluating high risk commercial and or industrial facilities that may be contributing excessive pollutant loading to the County s 54 This document contains the following e site selection protocol that uses geographic information system GIS data to identify industrial and commercial facilities and to rank them according to their potential to contribute pollutants to the 54 e field reconnaissance protocol and wet weather screening methods to be used for screening a subset of the selected sites 1 1 Q VERSAR Introduction and Purpose 1 2 Q VERSAR Site Selection and Priority Determination 2 0 SITE SELECTION AND PRIORITY DETERMINATION In accordance with its MS4 permit Arlington County will identify areas that are thought to be contributing significant pollutant loads including floatables during wet weather to the 54 The County uses available data to select applicable industrial and commercial parcels for investigation and possible wet weather screening Site selection and prioritization was developed using the following process a conduct desktop GIS analysis to identify sites b geo reference County sites of concern prepare preliminary list of sites for field verification and d prepare final prioritized list from reconnaissance results Any candidate properties located within the Four Mile Run Industrial Area were removed fr
53. riteria that are being employed Dedicated single analyte comparator kits will be used for analytes for which photometric analysis is not available Calibration Initial calibration of the photometer is achieved by inserting the zeroing ampoule from the appropriate test kit Photometric solutions and ampoules that are expired shall not be used for field screening There are no specific QC requirements for field photometers except for practicing proper technique in the field in accordance with the manufacturer s instruc tions The portable photometer will be maintained according to the manufacturer s specifica tions Preparing sample Depending on the test the sample is prepared by pouring a measured amount of effluent into a sample cup An appropriate chemical is added to the sample in the cup A testing ampoule from the appropriate kit is inverted into the sample and the tip snapped off against the side of the cup allowing the sample to flow into the ampoule Reading sample The sample is read by wiping the exterior of the ampoule completely dry and inserting it into the sample cell adaptor The mark on the ampoule is lined up with the arrow on the bottom of the adaptor The ampoule is covered with a light shield and the photo meter is instructed to measure the sample The photometer automatically waits the specified development time then displays the result in parts per million ppm of the particular analyte The following step
54. ronic tests of RAM and ROM mechanical tests of sample pump and distributor arm and making sure the knurled knob that holds the distributor arm to the frame is tight Monthly maintenance consists of running the sample pump to check for suction line integrity The suction line at a sampling point is replaced when the apparatus is moved to new site upon completion of sampling The pump tubing 15 replaced annually 4 2 Q VERSAR Notification 5 0 NOTIFICATION Appropriate staff of Arlington County s Department of Environmental Services Office of Sustainability and Environmental Management OSEM will be notified when analytes exceed surface water criteria established in this plan Table 5 1 or otherwise suggest substantial pollutant discharges from a site OSEM will be notified by field personnel in a timely fashion when results are available A description of the location of the facility chemical results and date and time of screening will be conveyed first to OSEM by phone and e mail to Diana Handy 703 228 0772 Dhandy arlingtonva us OSEM will contact DEQ and other county agencies subsequently by phone e mail and or letter as necessary Note If a hazardous material spill is suspected staff will immediately call the County s Fire and Police Non emergency service 703 558 2222 and OSEM Table 5 1 Laboratory analytes and detection limits for Arlington County s wet weather screening and industrial high risk monitoring program
55. s Brown et al 2004 If flowing water is present at outfall during dry weather the quality of the flowing water 1 assessed in the field Water quality testing for possible pollutants and characteristics such as pH temperature and turbidity provides on the spot information to help distinguish between improper discharges and other possible sources of dry weather flow such as groundwater infiltration For the Arlington County field effort screening of outfalls will consist of the following e Locate outfalls using GPS and infrastructure maps in the target areas e Inspect the selected outfalls for physical evidence of illicit discharge e If flowing water is present perform water chemistry tests in the field e If the presence of suspected illicit discharge is detected the Department of Environmental Services Office of Sustainability and Environmental Management DES OSEM will be notified within 24 hours Field procedures for dry weather screening as well as health and safety procedures common to all components are described in Sections 3 3 through 3 7 32 SELECTED ANALYTES Table 3 1 shows the selected analytes and their ability to aid in detecting various kinds of discharges Selection was based primarily on information provided in Brown et al 2004 and County requirements The Arlington County program includes identification of sources of pollutants of concern identified in TMDLs and stream impairment listings applicable to Fo
56. s are specific to Chemetrics test kits for chlorine ammonia nitrate nitrite and phosphorus If other kits are used follow manufacturer instructions Total Chlorine 1 Rinse sample cup from Chlorine Test Kit three times Fill to 25 ml mark with sample 2 Add 5 drops Activator Solution stir briefly with ampoule tip wait 1 minute B 3 VERSAR Appendix B Place ampoule in sample cup and snap tip by pressing on side of cup Allow ampoule to fill 1t will leave a small bubble which facilitates mixing 4 Invert ampoule several times to mix allowing bubble to travel from end to end each time Tap ampoule on hard surface to cause any small bubbles to rise to top of liquid 5 Wipe ampoule completely dry Continue with directions under Reading Sample e Use program number 32 e There will be a 1 minute automatic wait for color development Ammonia 1 Rinse sample cup from Ammonia Test Kit three times 2 Add 5 drops of Stabilizer Solution to the empty sample cup 3 Fill to 25 ml mark with sample 4 Add 2 drops Catalyzer Solution stir briefly with ampoule tip 5 Add 2 drops Activator Solution stir briefly with ampoule tip 6 Immediately place ampoule in sample cup and snap tip by pressing on side of cup Allow ampoule to fill it will leave a small bubble which facilitates mixing 7 Invert ampoule several times to mix allowing bubble to travel from end to end each time Tap ampoule on hard surface to cause any small bub
57. s observed perform water chemistry tests as described in Appendix B 1 4 Physical Indicators for Flowing Outfalls Only Collect information on physical features of flowing outfalls e g odor color turbidity sheens floating materials 5 Physical Indicators for Flowing and Dry Outfalls Collect information on physical features of both flowing and dry outfalls Examine outfall for presence and type of algae abnormal vegetation damage stains sheens and condition of plunge pool if any Structural problems e g cracking holes in corrugated metal pipes dissolved concrete should also be noted 34 TRACKING DOWN THE SOURCE OF AN IMPROPER DISCHARGE No trackdowns will be performed for flowing outfalls with clear flow and typical flow rate for groundwater seepage However upland site conditions e g presence of hotspots or activities that are resulting or may result in improper discharge will be noted by field staff on paper field data sheets photographed and included in the final report County staff DES OSEM will be notified during the screening if any active pollution discharge elevated flow discoloration is evident The final report will include any recommendations for follow up actions based on screening results and field observations 35 HEALTH AND SAFETY Ensuring the health and safety of field personnel is the responsibility of every staff member of the program The collective effort of all staff members in providin
58. t neither the suction line nor the bubbler tubing is pinched between the cover and sampler body Also check the lines to be sure there are no holes 8 If placing sampler in manhole using pro hanger and harness replace manhole cover by gently sliding horizontally over the hole If the angle of the manhole is too great as it nears seating it may press down on the pro hanger with enough force to dislodge it and cause the sampler to drop to the bottom of the manhole B 5 Q VERSAR Appendix B B3 STORM SAMPLE COMPOSITING Figure B 2 Discrete samples collected by automated sampler Materials Equipment and Supplies 1 Laptop PC running Flowlink software 2 Discrete sample bottle caps 3 Ice 4 Graduated cylinders 100 mL and 500 mL 5 Scale Methodology Automated Sampler 1 Open sampler body and examine bottles for presence of liquid Cap each discrete bottle if containing liquid Replenish with ice if necessary Close sampler body and transport it to office laboratory for sample processing 2 Download sampler data to laptop PC Create hydrograph of downloaded level data covering the time that the sampler was onsite in the field Convert continuous level B 6 Q VERSAR Appendix B data to flow rate using Manning s equation and input appropriate coefficients for the specific pipe 3 Export combined level and flow rate data into csv file e g sitename levelflow date of storm csv 4 Import level a
59. tection Agency Office of Water Washington D C April USEPA 1992 NPDES Storm Water Sampling Guidance Document EPA 833 B 92 001 U S Environmental Protection Agency Office of Water Washington D C July Virginia State Water Control Board 2009 General VPDES Permit for Industrial Activity Storm Water Discharges Permit No 5 Fact Sheet Virginia Department of Environmental Quality Richmond VA April Virginia State Water Control Board 2011 9VAC25 260 Virginia Water Quality Standards With Amendments Effective January 6 2011 Virginia Department of Environmental Quality Richmond VA January 6 1 Q VERSAR References 6 2 Q VERSAR APPENDIX A FIELD RECONNAISSANCE DATA SHEET Appendix A Q VERSAR Appendix A A 2 Q VERSAR Appendix A WATERSHED SUBWATERSHED UNIQUE SITE ID DATE _ ASSESSED BY MAP GRID o LMK A SITE DATA AND BASIC CLASSIFICATION Name and Address Category Commercial Industrial Miscellaneous Institutional Municipal 0 Golf Course Transport Related Marina Animal Facility SIC code if available Basic Description of Operation NPDES Status Regulated Unregulated Unknown B VEHICLE OPERATIONS N A Skip to part C Types of vehicles Fleet vehicles 0 School buses Other B2 Approximate number of vehicles Vehicle activities circle all that apply Maintained Repaired Recycled Fueled Wash
60. ter sample cup to 2nd line Add 1 TSIAB reagent tablet in the cup and shake vigorously until 1t dissipates Gently wipe sensor clean with a damp cloth and then dry it B 6 VERSAR Appendix B Place the sensor in the 0 5 solution in the sample cup Press the CAL key and CAL will show up on the display with 0 5 and 5 0 ppm reading 7 Continue holding the CAL key until 0 5 ppm is blinking Release the CAL key once the display stops blinking The unit then enters Hold mode and is ready for use Calibrate every 12 hours or before every batch of samples Use 1 TSIAB reagent tablet for every sample taken Waste Disposal Waste containers containing sharps from the field typically 1 liter polypropylene bottle will be capped marked clearly as glass and placed in ordinary trash at the office Waste containers containing liquid waste from screening tests typically 4 liter glass jugs will be stored in a secure location at the office until a licensed hauler is contracted to remove them written report of the detailed contents of the waste will be provided to the hauler B 7 Q VERSAR Appendix B B 8 Q VERSAR Appendix APPENDIX C DATA SHEETS FOR DRY WEATHER SCREENING 1 Q VERSAR Appendix VERSAR Appendix Page 1 of 2 Arlington County VA Dry Weather Screening SECTION 1 BACKGROUND DATA Watershed Outfall ID Date MM DD Y Y Time Military __ Inves
61. tigators Form completed by Rainfall Last 24 hours O gt 0 1 inches Last 72 hours lt 0 linches 0 1 inches lt 0 1 inches Latitude dd dddd oN Longitude dd dddd GPS Unit Photo s Camera Notes Comments e g origin of outfall if known SECTION 2 OUTFALL DESCRIPTION Location Closed Pipe O Open Drainage Outfall Elevation Outfall Cover Outfall Protection Outlet Erosion Material Dimensions In L RCP L PVC Steel Other 0 Concrete O Earthen Other L CMP L HDPE Terra cotta O Rip Rap Circular O Elliptical Other Arch L Double Trapezoid Parabolic Other Triple Other Dimensions Height Width Depth Top Width Bottom Width Suspended Height ft O Cage O Rip Rap 0 Gabion Basket Submerged Depth In Water ft Steel Grate None Other 0 Concrete 0 None Other None Minimal Erosion Moderate Erosion Heavy Erosion O Silted In Sediment ft Erosion Source Headwall Condition Flow Present Good Fair L No If No Skip to Section 5 L No Headwall Poor Intermittent Stagnant Flow Depth In SECTION 3 QUANTITATIVE CHARACTERIZATION FIELD DATA FOR FLOWING OUTFALLS PARAMETER RESULT UNITS PARAMETER RESULT UNITS Chlorine EE mg L
62. toms of heat exhaustion include Rapid and shallow breathing e Weak pulse Cold and clammy skin with heavy perspiration e Skin appears pale e Fatigue weakness and or dizziness and e Elevated body temperature First aid treatment includes cooling the victim elevating the feet and replacing fluids If the individual has not recovered within 2 hour he she will be transported to the hospital for medical attention Heat stroke occurs when an individual is exposed to excessive heat and their body systems become overwhelmed by heat and begin to stop functioning This condition is a medical emergency requiring the immediate cooling of the victim and transport to the hospital immediately The signs and symptoms of heat stroke include e Victim has stopped sweating e Dry hot red skin e Body temperature approaching or above 105 e Dilated large pupils and e Loss of consciousness victim may lapse into a coma Local weather conditions may produce an environment which will require restricted work schedules in order to protect employees The Field Team Leader will observe workers for any potential symptoms of heat stress Adaptation of work schedules and training in recognition of heat stress conditions will help prevent heat related illnesses from occurring C11 2 COLD STRESS Cold stress is a danger at low temperatures and when the wind chill factor is low Cold stress 15 generally described as a local coolin
63. ttles 500 ml for nutrients sample 250 mL plastic cup 500 mL wash bottle containing distilled water Gallon cubitainer or equivalent containing distilled water Q VERSAR Appendix A VERSAR Appendix B APPENDIX STANDARD OPERATING PROCEDURES FOR DRY WEATHER SCREENING Q VERSAR Appendix B VERSAR Appendix B B 1 Procedures for Water Chemistry Testing Water chemistry and water quality measurements of outfall effluent if present will be obtained by the use of a single analyte meter detergents fluoride and portable photometers all others and multiparameter sondes respectively The photometer and single analyte meter will measure concentrations of targeted specific analytes that will be used to assess whether a possible illicit discharge exists The multiparameter sonde measures water quality parameters such as conductivity pH and temperature as a secondary assessment of illicit discharge potential Samples to be tested for nitrate nitrite and phosphorus will be placed on ice and tested in a controlled location e g a laboratory Photometer or equivalent The water chemistry testing equipment to be used during the field screening will consist of an economical portable battery powered photometer Such photometers are versatile and can be configured to screen for a variety of indicators e g ammonia and chlorine of illicit discharge The detection range is appropriate to the screening c
64. uantity and count of captured floatable material for a given event The field data sheet contains similar storm characteristic information as for water quality monitoring 4 2 CHAIN OF CUSTODY Chain of custody COC forms used for all samples are a permanent record of transfer of sample custody Custom COC forms for this project are preprinted with the analytes and partial laboratory numbers particular to the activity at hand e g composite Appendix D Field staff need only to complete the laboratory numbers complete the columns designated for other information line out any samples that will not be submitted and sign the form When picking up the samples for delivery to the laboratory the laboratory courier signs and dates the COC form in the Received By box and leaves a photocopy for project records 4 3 ISCO MODEL 6712C PORTABLE AUTOMATED SAMPLER The sampler assembly consists of a keypad pump tubing and sample bottle container which holds 24 plastic bottles The 24 bottles are used to contain the discrete samples collected at intervals throughout the storm Required maintenance involves checking the integrity of the suction tubing checking to see that suction tubing is securely attached to the pump tubing when 4 1 Q VERSAR Data Management Quality Control sampler is attached making sure that pump tubing is properly threaded through the distributor arm running the internal electronic maintenance cycle includes elect
65. ufficient water at a different time during the interval between discrete samplings Floatables Detach net from supporting ring Note presence of scum or oily residue at water line of pipe In water quality laboratory measure gross weight of net and contents Remove contents of net and place onto stainless steel analysis tray Determine weight of bedload items Sw oe 05 09 or Count and record quantity of floatable objects of each type e g aluminum cans pieces of plastic paper etc 7 Rinse net with distilled water and obtain tare weight B 7 Q VERSAR Appendix B B 8 Q VERSAR Appendix APPENDIX C HEALTH AND SAFETY GUIDANCE FOR WET WEATHER SCREENING FIELD WORK Q VERSAR Appendix 2 Q VERSAR Appendix GENERAL Health and safety responsibility and accountability involves every employee The collective effort of all employees in providing a healthy and safe work environment will mini mize or eliminate the potential for accidents In general field sampling will require the following safety protocol to protect the field staff 1 2 3 Perform field work in teams of at least two Bring cell phone and first aid kit on all field site visits Exercise caution when encountering any wildlife and hazardous plants In addition many outfalls are located in remote areas that may be near gathering places for homeless or transient individuals Do not enter a potentially hostile area Use
66. ur Mile Run Results of screening tests will be compared to the criteria presented in Table 3 1 to assist in identifying the possible source of a suspected improper discharge or illicit connection Testing results will be included in a monitoring report 3 1 VERSAR Field Protocol Table 3 1 Dry weather screening parameters and action criteria Recommended Recommended Effluent Type Kit or Action Instrument Analyte Indicated Probe Criterion Range IDDE Parameters industrial total chlorine drinking water photometer gt 0 4 mg l 0 to 5 mg l sewage single fluoride tap water analyte gt 0 25 mg l 0 to 10 mg l meter sewage ammonia washwater photometer industrial 2 I mg l 0 2 to 30 single analyte gt 0 25 mg l 0 15 to 1 mg l meter surfactants sewage detergents washwater pH on sonde lt 5 industrial 0 to 14 DL Parameters nitrate fertilizer application photometer 0 2 to 1 5 mg l nitrite fertilizer application photometer A 0 08 to 0 80 mg l total washwater photometer A 0 2 30 mg l phosphorus fertilizer application Exceedance criteria are based on the test range of the field kit 33 DRY WEATHER SCREENING PROCEDURE Initial dry weather screening activities include assessing the physical characteristics of the outfall and any discharge and performing screening chemistry tests on the discharge 1f present Field screening will not proceed unless there has b
67. work coverage Any candidate properties located within the Four Mile Run Industrial Area or any properties that were assigned the incorrect property class code and are associated with businesses that are typically low risk polluters are removed from consideration A separate list of candidate sites within the Four Mile Run Industrial area is prepared based on the results of the GIS verification of stormwater infrastructure 2 3 FIELD RECONNAISSANCE PROTOCOL Sites identified as candidates for screening according to the site selection protocol are visited to obtain additional information regarding ease of access and sampleability Field maps prepared for reconnaissance include streams watersheds outfalls the storm sewer network and major and minor roads Site conditions are photo documented The field reconnaissance proto col consists of the following steps 1 Evaluate the parcel visually for the presence of trash poor housekeeping suspicious spills or stains and the presence or absence and condition of secondary controls USEPA 2005 Record observations on standard hotspot investigation data sheet Appendix A 2 Evaluate site accessibility security of the area and storm network accessibility for the purpose of locating an automated sampler Verify that the stormwater network services the portion of the parcel that experiences the greatest impact from pollution causing activities Open manholes and determine the suitability of pla
68. yringe tip comes in contact with the glass vial the tip will become contaminated and must be cleaned before it is used again Add 3 drops of Stabilizer Solution Securely cap vial Invert the vial several times to mix the contents e For samples with more than 5000 ppm chloride adjust the drops of Stabilizer Solution 5000 10 000 ppm Chloride use 5 drops 10 000 20 000 ppm Chloride use 7 drops 10 While holding the double tipped ampoule in a vertical position snap the upper tip using the tip breaking tool Invert the ampoule and position the open end over the vial Snap the upper tip and allow the contents to drain into the vial Securely cap the vial Invert the vial several times to mix the contents B 5 VERSAR Appendix B 11 Remove the cap from the vial and place the funnel into the neck Remove the Reducer Powder from the storage bag Add 1 full scoop of the Reducer Powder to the Total Phosphate vial Tap the funnel gently on the neck of the vial to make sure that all of the powder falls into the vial 12 Securely cap the Total Phosphate vial Shake the vial vigorously for 10 seconds to dissolve the powder and mix the contents 13 Wipe the exterior of the vial until it is clean and dry and wait 2 minutes for color development Read the vial in your photometer If necessary use the calibration equation below to obtain test results in ppm P Accuracy may be impaired if test results are outside the stated test range e ppm
69. ystem MS4 Permit This Site Selection and Screening Plan establishes the protocol for identifying and screening outfalls draining the designated Shirlington Village commercial district and the South Four Mile Run Drive industrial area for illicit discharge These target areas are screened on an annual basis for presence of illicit discharge as is required by the County s current VPDES MS4 permit This Plan also serves as the field operations and data management manual for the dry weather screening program This dry weather screening program is part of an effort to 1 identify and map MS4 outfalls 2 screen MS4 outfalls for dry weather discharge the presence of pollutants or other visible signs of an illicit connection and 3 isolate and correct the illicit connection 1 1 Q VERSAR Site Selection Protocol 2 0 SITE SELECTION PROTOCOL Both Shirlington Village commercial district and the South Four Mile Run Drive industrial area are located in the southeastern portion of Arlington County abutting Four Mile Run Both areas discharge directly or indirectly to Four Mile Run Maps of the areas as well as the locations of potential outfalls are presented in Figure 2 1 through Figure 2 3 Target outfalls were identified by mapping stormwater conduit infrastructure from County ArcGIS coverage During the intial screening field teams will also conduct a visual survey of drainage channels in the study areas to identify any unmapped outfalls

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