Linkside Place CSWP Inspection 18 February 2004 Highway ... · PDF fileLinkside Place CSWP...

Linkside Place CSWP Inspection 18 February 2004Highway 162, Oroville, Butte County Attachment B

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Picture #1

Picture #2

Gully erosion on down slopes

Sediment laden storm wateroutside of silt fence BMPadjacent to Highway 162

Silt flow outside ofsilt fence BMP atNW corner of LP

Close-up of silt fence BMPfailure NW corner of LPadjacent to south side Hwy 162

No sign of erosion control BMPs

Gully erosion

NW corner of LPNo sign of erosion control BMPs


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Picture #3 No sign oferosioncontrol BMPsentire westernside of LP

Large gullyerosion of fillmaterials NWcorner of LP

Silt flow

Picture #4 No sign of erosion controlBMPs middle section LP

Highway 162 looking south at LP

More gully erosion


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Picture #5

Picture #6

Silt fence BMP removedon eastern side of LP

Table Mountain Golf Course

No sign of erosioncontrol BMPs oneastern side of LP

Dewatering operation ofcul-de-sac (Logan Court)

NEXRADRadar Facility

No sign of erosion controlBMPs on southeastern side ofLP


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Picture #7

Picture #8

Silt fence BMP removed on northeasternside of development; grassy area depictsend of active construction area

Turbid water leaving easternboundary of LP towardsTable Mountain Golf Courseto the east

NE corner of LPNo silt fence BMP observed at NE corner of LP, turbid waterleaving site towards Table Mountain Golf Course to the east

No erosion control BMPs


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Picture #10

Close-up of hazardous materials placardon diesel #2 mobile storage tank asdepicted in this report as Picture #9

Picture #9

No erosioncontrol BMPsobserved inmiddle of LP

No earthen berms were constructedaround either hazardous material tanklocated on site. This was listed as aBMP in the SWPPP.


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Picture #11

Picture #12

Cul-de-sac (Logan Court) onnortheastern side of developmentwas used to collect storm water

Dewatering pump

Table Mountain Golf Course #5 tee box

Petroleum hydrocarbon sheenon turbid storm water at easternside of cul-de-sac (LoganCourt)

Silt fence BMP removedin two locations on eastside of development


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Picture #13

Picture #14

Close-up of petroleumhydrocarbon sheen on turbid stormwater in cul-de-sac (Logan Court)

Dewatering pump was leaking fuel at time ofinspection; sheen located on storm wateradjacent to pump location on the eastern sideof cul-de-sac (Logan Court)


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Picture #15

Picture #16

Looking north at dewatering ofsediment laden storm waterfrom cul-de-sac (Logan Court)

Dewatering sample locationfrom end of pipe

Sample No. 1Total suspended solids: 1900 mg/LTurbidity: 2440 NTUsSettleable solids: <0.1 mL/L/hr


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Picture #17

Picture #18

Looking south at gravel road that runs north-south connecting NEXRAD Radar Facility andHighway 162 on the eastside of LP

Culvert passes under gravelroad, wetland sample locationof Picture #19

LP development

Table MountainGolf Course

Looking north from NEXRAD Radar Facility. The culvert dischargesinto an ephemeral drainage on west side of golf course from LP.Sample No. 2 location is depicted in Picture #19

NEXRADRadar Facilityaccess road

Flow

NEXRADaccess road


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Picture #19

Picture #20

Sample of sediment laden stormwater from LP as it enters ephemeraldrainage on west side of access roadadjacent to west side of golf course,100+’ north of NEXRAD RadarFacility

Sample of water immediately north ofNEXRAD Radar Facility and south ofLP development (Backgroundsample)

Sample No. 3Total suspended solids: 7 mg/LTurbidity: 12.1 NTUsSettleable solids: <0.1 mL/L/hr

Sample No. 2Total suspended solids: 1150 mg/LTurbidity: 1,740 NTUsSettleable solids: 0.1 mL/L/hr

Flow


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Picture #21

Picture #22

Backgroundsample

NEXRADRadar Facility

LP discharge

Distance between samplelocations is 90-100’

Sample comparison

Sample No. 2Total suspended solids: 1150 mg/LTurbidity: 1,740 NTUsSettleable solids: 0.1 mL/L/hr

Sample No. 3Total suspended solids: 7 mg/LTurbidity: 12.1 NTUsSettleable solids: <0.1 mL/L/hr

LP discharge onto golfcourse property

Culvert adjacent to northside of NEXRADfacility (Background)


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Picture #23

Picture #24

Picture of sediment laden storm water bubbling up in wetland area betweenNEXRAD Radar access road (west side) and LP (eastern boundary)

Sediment laden storm water accumulating in grassy wetland onwest side of NEXRAD Radar access road south of LP


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Picture #25

Picture #26

Wetland area on south side of NEXRADRadar Facility that receives storm waterfrom parcel immediately to south of LPdevelopment (Linkside Place Phase II)

Sediment laden storm water flowing aroundsoutheast side of NEXRAD Radar Facility inephemeral drainage located on westside ofTable Mountain Golf Course

Sediment laden storm waterdischarge from LP developmentimpacting ephemeral drainageand wetlands on west side ofTable Mountain Golf Courseimmediately south of NEXRADRadar Facility

Flow

Flow

Flow from undevelopedparcel to the south of LP(Linkside Place Phase II)


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Picture #27

Picture #28

Measuring flow of the dewateringdischarge from LP. To gage flow a ½gallon plastic sample bottle was used. Thetime to fill the bottle was 4-5 seconds.This measurement was repeated 10 timesto ensure that the measurement wasreflective of discharge quantity.

Mr. John Montgomery disclosed on the telephoneimmediately after the site inspection that he had startedthe dewatering operations at 8:00 a.m. the morning ofthe inspection and that he shut down the dewateringoperations at 4:30 p.m. the day of the inspection. Thedewatering therefore lasted for 8½ hours.

At 5 seconds to fill ½gallon, this would equal360 gallon/hr or 3,060gallons for 8½ hrs

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