PITT MEADOWS

REPORT REQUEST FOR COUNCIL DECISION

April 14, 2016 FILE: 5700-20-2014-02-E

Department of Engineer and Operations

Implementation Update on the Environmental Consultant Recommendations for 19265

Airport Way and 19451 Sutton Avenue

RECOMMENDATION: THAT Council:

A. Receive the report dated April 13, 2016 from the Director of Engineering and Operations

respecting an update on the implementation of the environmental consultant recommendations

for 19265 Airport Way and 19451 Sutton Avenue for information; AND

B. Authorize the hiring of an environmental consultant to perform a groundwater qualityinvestigation at 19265 Airport Way to be paid for by the developer; OR

At the April 12, 2016 Special Meeting of the City Council, staff was directed to temporarily suspend theDeveloper’s fill permit for 19265 Airport Way until all outstanding environmental recommendations ofDillon’s report dated March 25, 2016 had been corrected.

KEY ISSUE(S)/CONCEPT(S):

On April 13, 2016, the Developer sent a formal response to the CAO (Attachment A). This responseincludes a summary of the work completed to date and provides an action plan and timeline for anyoutstanding items.

Staff forwarded the Developer’s correspondence to Dillon for a third party professional review of thesuggested mitigation actions. On April 14, 2016, Dillon issued a memo in response to the Developer’scorrespondence. (Attachment B)

Additionally, Dillon’s memo provides information on a groundwater quality investigation for Council’sreview. While Dillon agrees that all immediate erosion and settlement control concerns have beenaddressed reasonably in the Developer’s correspondence, it is Dillon’s opinion that in order to fullyunderstand if the fill has introduced any groundwatercontaminants to the region, a quantitative testingprogram would be required. Given the number of source fill sites for 19265 Airport Way is in excess of300 sites, Staff agrees with Dillon’s recommendation. This quantitative data collection and analysis willsupplement the qualitative analysis which was previously performed under Dillon’s contract.

DATE:

FROM:

SUBJECT:

C. Other.

CHIEF ADMINISTRATIVE OFFICER COMMENT/RECOMMENDATION:

BACKGROUND:

#135473v1- 47 -

PITT MEADOWS

In Staffs discussions with Dillon, it was suggested that an initial groundwater quality investigation wouldrequire approximately:

• 1 week to obtain pricing and award a contract• 1 week to mobilize drilling equipment• 1 week to conduct sampling & and obtain the results• 2 weeks to create a draft report

Accordingly, given the extended timeframe required for an initial groundwater investigation, Staffsuggests that the current temporary suspension on the Developer’s Soil Removal and Fill Deposit Permitbe correlated with the implementation of the erosion and settlement control recommendations and notthe groundwater quality investigation.

In addition, at the April 12, 2016 Special Meeting of the City Council Staff were directed to:

• Investigate prohibiting asphalt for fill material, investigate the use of asphalt for temporaryroad base and report back to Council with further information.

Staff Comment: Staff proposes a temporary ban on the use of recycled asphalt as both a fillmaterial and road construction material untilfurther research has been completed andconsultation with the Ministry of Environment has occurred. Staff will bring forward thefinding for Council’s consideration at a future date.

Note: The Developer, has also proposed a recycled asphalt ban at both 19265 Airport Wayand 19451 Sutton Ave in their letter to the CAO.

• Establish a procedure for staff to liaise with the Ministry of Environment and developers as

it relates to the City’s policy regarding fill and report back to Council; AND

Staff Comment: Staff to bring back an administrative policyfor council consideration whichwill establish guidelines for contact with governmental agencies. In anticipation of Council’sreview and comments of the administrative policy, Staff will request to be included in allcommunications with external governmental agencies.

• Review the language in the City’s Soil Removal and Fill Deposit Regulation Bylaw No. 2593

with respect to classifying the type of material, fill site load inspection criteria, identification

of contaminants or invasive species, qualitative testing requirements, and other related

matters as identified, and report back to Council; AND

Staff Comment: Staff to review the City’s Soil Removal and Fill Deposit Regulation Bylaw No.2593 and bring forward the proposed changes for Council’s consideration.

#135473v1- 48 -

PlU MEADOWS

. Include any comments and decisions including chronology of said comments and decisionsfrom the Agricultural Land Commission and the Pitt Meadows Agricultural AdvisoryCommittee with respect to the application to exclude 19 acres of the subject land from theAgricultural Land Reserve.

Staff Comment: Staff will bring forward a reportfor Council’s consideration.

STRATEGIC ALIGNMENT: Community Livability — Promote the conservation and enhancement of ournatural environment

DESIRED OUTCOME: Provide Staff direction to initiate a groundwater quality investigation for 19265Airport Way to ensure the fill site is not contributing contamination to the regions groundwater.

IMPLICATIONS OF RECOMMENDATION: Given that a water quality baseline was not established at thefill site commencement date, if contaminants are present in the samples, it may prove challenging toisolate a contamination source to 19265 Airport Way and determine when the contamination began

IMPLEMENTATION/COMMUNICATION: Staff will present updates at future council meetings.

KATZIE FIRST NATION CONSIDERATIONS: Katzie First Nation share an equal interest in conservationand enhancement of our natural environment

OTHER: None identified by staff.

Submitted by: F. Smith, Director of Engineering and OperationsReviewed by: K. Zanon, Director of Community ServicesApproved by: M. Roberts, CAO

ATIACHMENT(S):

A. Onni Correspondence to CAO dated April 13, 2016

B. Dillon Consulting Memo dated April 14, 2016

#135473v1- 49 -

cnniApril 13, 2016

Mark RobertsCity of Pitt Meadows12007 Harris RoadPitt Meadows, B.C., V3Y 2B5

Subject: Response to Dillon Consulting Recommendations at Onni Pitt Meadows

industrial and townhome site

Mr. Roberts,

Our comments to Dillon’s recommendations below in Italics.

Dillon Consulting Recommendations 19265 Airport Way

1. Increase the frequency of water quality monitoring at the culvert near the southeast

corner of 19265 Airport Way. A suggested frequency is once per week and immediately

after any storm event exceeding 25mm in a 24-hour period.

Onni have arranged for weekly water sampling to lake place as part 0/our weeldv

Erosion and Sediment (Z’ontrol plan monitoring. GeopacifIc Consultants, our ESC

supervisors, will carry out this monitoring. Results will made available to city ofPitt

i’vleadows Upon their request. Onni/Geopacific will monitor I!SC a/icr heavy rail?fOJls and

winds.

2. Address deficiencies such as collapsed silt fences, undercutting, etc. to prevent further

offsite migration of imported fill. Increase monitoring frequency of silt fences and ESC

measures along the perimeter of the site. Weekly monitoring and inspection of ESC

measures is among the control criteria listed on Permit Application Drawing G-SP4.

Deficiencies should be fixed immediately once identified.

This will he reviewed weekly as part ofGeopacific ‘s E.S’C monitoring work, They will

report any deficiencies in their memo, which is forwarded to hugh hiannigan,

Infrastructure Manager at Onni, on the same day Any defIciencies will be recif1ed

iithin 48 hours by dedicated on—site Onni employees which ensure recommendations are

completedfully.

300 -- ¶50i Rth’.or 3.3. PH 306 602 7717

0r.3h Crhi’bi, F-nc 1.01.- F?EAt. ES1AT D’1ELUP61NT

0 .3! PO’ On j ri Ii TIN M r4-. EW

- 50 -

c3nni&

3. Repair perimeter silt fencing at multiple locations at 19265 Airport Way. Toe in silt fence

to a depth of 300mm with the toe oriented upsiope.

This is the typical dc’taii for installing siltfrnce, Geopacfic s ESC monitor will inspect

the silt fencing weekly and we will take photos ofany /iu’ther siltfence that is to he

installed. Silt fence maintenance is an item of emphasis with dedicated on-site Onni

employees.

4. Complete the perimeter silt fencing around the north side of 19265 Airport Way as

detailed in the Permit Application Drawing G-SP 1.

Silt Fence to be installed April 20. Installation should take approximately 2 days.

5. Maintain silt fence as required including removal of accumulated sediment against

upsiope side when accumulation reaches 50% of the height of fence.

This’ will he monitored daily by Onni staffon-site and rectified immediately i/’necessaly

Ailsiii fence will also he monitored ii’eekly by Geopacific as part of their ESC monitoring

program.

6. Address surface water issue at the south end of 19265 Airport Way so that sediment

laden water is not discharged offsite. The need for a sediment pond described in Soil

Removal and Fill Deposit Permit Application 2014-RP086 should be revisited.

The enriy bridge and asphali area between the hriage and the wheel wash has dei’eloped

a negative grade due to weight ofincoming and outgoing trucks over a number ofyears.

The bridge is being li/led on Friday April 8th and we are re-paving the area between the

bridge and wheel wash on Monday April jjih This work will ensure we have a slope back

towards the site which will prevent water from leaving site. We have also ad(fed2-3 fool

berins on the south side ofthe site beside the entrance to help prevent walerfrom leaving

the site. ESC pond i4’iil be added to ESC design and installed end of.’lpril. Geopacific to

ensure pond is adequately sized to handle capacity.

7. Gravel Check dams within drainage pathways and channels may begin to ameliorate the

situation in places. Check dams should be maintained as stated in Permit Application

Drawing G-SP4.

Suite 300—350 0obsur S1 etce 60/a 652 7711

LI C U Ill ‘ f \ EL ENi

V6B 2137 onriLom F PEFTY & CUNSrFIJCTOi4 MANAGEMEN]

- 51 -

rrT() Li [>

We hare installed numerous gravel check dams, hay bales and sift frncing in all drainage

pathways. This will he reviewed weekly as part of the ESC monitoring inspection.

8. Water accumulating in the makeshift pond near the south end of the site should not be

pumped to grassy area beside the entrance at 19265 Airport Way.

This was a new employee that was unsure ofthe site procedures. All employees haie

since been instructed that no wct!er is to be pumped offsite; We have dedicatedponds

within the middle ofthe site that contain all site water and act as sediment ponds in an

attempt to control sedimeni-laden water. These ponds were created on the

recommendation of Geopaci/ic in lieu qfa designed sediment pond.

9. ESC criteria presented in Permit Application Drawing G-SP4 should be adhered to,

All ESC criteria will be inspected weekly by EVC monitor from GeopacifIc,

Onni have arranged regular site visits with Forrest Smithfrom the City ofPitt Meadows.These visits include inspections of the ESC measures at 19265 Airport Way.Onni receive weeki reports from a dedicated lSC monitor. These reports are made

available to the city at their request.Onni receive monthly reports from our Geotechnical consultant to comment on the JIll

material we accept and how it is dealt i’ith on site. These are made available to the city

at their request.Onni use a computerized tracking system to track all material that is brought into flies ite

at 19265 Airport Way This information is made available to the city at their request.

Onni JO/low strict procedures before accepting mater jul at 19265 Airport Way. This

includes geo technical and environmental assessments of ill that is brought to site.

Onni no longer accepts any asphalt or concrete brought to site. Dedicated landfill

gatekeepers ensure that only pre-appioved material that meets Geotechnical and

Environmental qualification is allowed on-site.

Records.’reports’ for all ESCprocethires available to City ofPitt Meadows at their

request.

Dillon Consulting Recommendations 19451 Sutton Ave

1. Stockpiled soil should be hydroseeded or surrounded with silt fencing to limit the

potential for soil mobilization and offsite conveyance.

— 5Q Rbor. ‘t PrOE 6O/ £d2 771

;cuver. r4utih Ob r;E5;L .STA1 DEV,Pir

-‘ L ‘‘ i1 C_’’ P 1-E t ku 7 ‘i

- 52 -

U1 UUç1rc,& [

Stockpiled soil was hydroseeded in October hut due to the excessively wet winter, ii didnot fully take off All stockpiles will be hydroseeded again in the next two weeks as the

weather conditions should he ideal then. The perimeter of the site is lined withslitface

to pre ‘ent any q%jite conveyance.

2. The use of uncured cement near the top of the bank of Katzie Slough is a high riskpractice that could be deleterious to the adjacent watercourse. Concrete, cement, mortars,grouts and other Portland cement or lime containing construction materials are alkalinematerials. They are highly toxic to fish and must only be used near water with extremecare. (BC MoE, 2004). Adherence to Standards and Best Practices for Instream Worksshould be adhered to if uncured concrete is to be used near a watercourse.

All work was carried out under the superl’isiOn ofcascade Environmental. All Standardsaul Best Practicesfor Insirearn Works were adhered to. There will he no more ue of

uriciired cement in this area

3. Address deficiencies such as collapsed silt fences, undercutting, etc. to prevent furtheroffsite migration of imported fill. Increase monitoring frequency of silt fences and ESCmeasures along the perimeter of the site.

Silt fencing has been fIxed and is being inspected weekly as part of the Geopacifics

weekly monitoring plan.

4. Maintain silt fence as required including removal of accumulated sediment against

upsiope side when accumulation reaches 50% of the height of the fence.

This will he monitored i’eekly as part ofGeopacfic ‘s monitormg plan. Silt will heremoved if it reaches 50% ofthe height ofthe fence.

5. General recommendations regarding ESC measures at 19265 Airport Way are alsoapplicable to 19451 Sutton Avenue.

Geo pacific will he monitoring current ES’C measures at 19451 weekly along with the

ESC measures at 19265 Airport Way.

6. An ESC plan for 19451 Sutton Avenue should be developed and adhered to.

An ESC plan fm-am Geopacific will he implemented and adhered to. Design prepared bymid April. installation toföilow end qfApril.

Si 350 355 Robon St. PKNE t,04 602 7711

Vn:ovcr, ir’it CDiumbi FA> 604 688 7707EAL ESTATE QEVELOPMENI

3 ‘L .i C1I1 LO r.. (,fl IRt H.) ‘1

- 53 -

Onni and Cascade Environmental will train landfill gatekeeper to recognize invasivespecies and will keep a photo board of invasive examples at the gatekeeper stand.

In summary, all outstanding Dillon recommendations have or will be addressed, weatherpermitting. Please feel free to contact me for any further info related to Onni’s Pitt Meadowssites.

Best Regards,

Dionne DelesalleDevelopment ManagerOnni Group of Companies

3JO 5Q Roh;on £t. wow 6O M2 77i

Vc:ojvr, E’rti,h Coumha AX STAr UEVELOPHNT

Crad V63 2D7 onnLorn & CNSTRUGTION MAN&EMENi

- 54 -

Dillon Comments to Onni Responses

DILLONESC measures at 19265 Airport Way and 19541

CONSULTINGSutton Avenue

MEMO DATE: April 14, 2016

ESC AUDITOR: Bimsara Dissanayake, P.E., P.Eng., Dillon Consulting Limited

This memo is prepared in response to the letter prepared by Onni in regards to the Recommendations

provided by Dillon Consulting Limited on February 4, 2015. The recommendations were provided fortwo fill sites at addresses 19265 Airport Way and 19541 Sutton Avenue in Pitt Meadows.

i92 65_Airport WayDillon Recommendation Onni Response Dillon Comment

Increase the frequency of water Onni have arranged for weekly water sampling to take Agreed with thequality monitoring at the culvert place as part of our weekly Erosion and Sediment Control response.near the southeast corner of plan monitoring. Geopacific Consultants, our ESC Suggest proper19265 Airport Way. A suggested supervisors, will carry out this monitoring. Results will maintenance offrequency is once per week and made available to city of Pitt Meadows upon their request. theimmediately after any storm Onni/Geopacific will monitor ESC after heavy rainfalls and documentation.event exceeding 25mm in a 24- winds.hour period.Address deficiencies such as This will be reviewed weekly as part of Geopacific’s ESC Agreed with thecollapsed silt fences, monitoring work. They will report any deficiencies in their response.undercutting, etc. to prevent memo, which is forwarded to Hugh Hannigan, Suggest reducingfurther offsite migration of Infrastructure Manager at Onni, on the same day. Any response time toimported fill. Increase deficiencies will be rectified within 48 hours by dedicated 24 hours ifmonitoring frequency of silt on-site Onni employees which ensure recommendations are possible.fences and ESC measures along completed fully.the perimeter of the site. Weeklymonitoring and inspection ofESC measures is among thecontrol criteria listed on PermitApplication Drawing G-SP4.Deficiencies should be fixedimmediately once identified.Repair perimeter silt fencing at This is the typical detail for installing silt fence. Agreed with themultiple locations at 19265 Geopacific’s ESC monitor will inspect the silt fencing response.Airport Way. Toe in silt fence to weekly and we will take photos of any further silt fence thata depth of 300mm with the toe is to be installed. Silt fence maintenance is an item oforiented upslope. emphasis with dedicated on-site Onni employees.Complete the perimeter silt Silt Fence to be installed April 20. Installation should take Agreed with thefencing around the north side of approximately 2 days. response. Provide19265 Airport Way as detailed in documentation to

the Permit Application Drawing the City.G-SP1.Maintain silt fence as required This will be monitored daily by Onni staff on-site and Agreed with theincluding removal of rectified immediately if necessary. All silt fence will also response.accumulated sediment against be monitored weekly by Geopacific as part of their ESC Maintainupsiope side when accumulation monitoring program. documentationreaches 50% of the height of on all repairs.fence.

- 55 -

Response to Comments

19265 Airport Way and 19541 Sutton Avenue April 14, 2016

19 port WayDillon Recommendation Onni Response 1TlIon Comment

Address surface water issue at The entry bridge and asphalt area between the bridge and Agreed with thethe south end of 19265 Airport the wheel wash has developed a negative grade due to response. EnsureWay so that sediment laden weight of incoming and outgoing trucks over a number of alternate ESCwater is not discharged offsite. years. The bridge is being lifted on Friday April 8th and we measures are inThe need for a sediment pond are re-paving the area between the bridge and wheel wash place anddescribed in Soil Removal and on Monday April 1 Ith. This work will ensure we have a functional untilFill Deposit Permit Application slope back towards the site which will prevent water from the sediment2014-RP086 should be revisited, leaving site. We have also added 2-3 foot berms on the pond is installed.

south side of the site beside the entrance to help preventwater from leaving the site. ESC pond will be added to ESCdesign and installed end ofApril. Geopacific to ensure pondis adequately sized to handle capacity.

Gravel Check dams within We have installed numerous gravel check dams, hay bales Agreed with thedrainage pathways and channels and silt fencing in all drainage pathways. This will be response.may begin to ameliorate the reviewed weekly as part of the ESC monitoring inspection. Maintainsituation in places. Check dams documentation.should be maintained as stated inPermit Application Drawing GSP4.Water accumulating in the This was a new employee that was unsure of the site Ensuremakeshift pond near the south procedures. All employees have since been instructed that employees areend of the site should not be no water is to be pumped off site. We have dedicated ponds properly trained.pumped to grassy area beside the within the middle of the site that contain all site water andentrance at 19265 Airport Way. act as sediment ponds in an attempt to control sediment-

laden water. These ponds were created on therecommendation of Geopacific in lieu of a designedsediment pond.

ESC criteria presented in Permit All ESC criteria will be inspected weekly by ESC monitor Ensure properApplication Drawing G-SP4 from Geopacific. Onni have arranged regular site visits with paperwork isshould be adhered to. Forrest Smith from the City of Pitt Meadows. These visits maintained. Each

include inspections of the ESC measures at 19265 Airport load of fillWay. Onni receive weekly reports from a dedicated ESC material broughtmonitor. These reports are made available to the city at on site should betheir request. Onni receive monthly reports from our recorded so thatGeotechnical consultant to comment on the fill material we it can be easilyaccept and how it is dealt with on site. These are made tracked to theavailable to the city at their request. Onni use a source site.computerized tracking system to track all material that isbrought into the site at 19265 Airport Way. Thisinformation is made available to the city at their request.Onni follow strict procedures before accepting material at19265 Airport Way. This includes geotechnical andenvironmental assessments of fill that is brought to site.Onni no longer accepts any asphalt or concrete brought tosite. Dedicated landfill gatekeepers ensure that only preapproved material that meets Geotechnical andEnvironmental qualification is allowed on-site.Records/reports for all ESC procedures available to City ofPitt Meadows at their request.

Dillon Consulting Limited Dillon Project # 1 6-3051 Page 2

- 56 -

Response to Comments19265 Airnort Way and 19541 Sutton Avenue ,4nril 14 2016

—

19451 Sutton AvenueDillon Recommendation Onni Response Dillon Comment

Stockpiled soil should be Stockpiled soil was hydroseeded in October but due to Agreed with thehydroseeded or surrounded with - the excessively wet winter, it did not fully take off, response.silt fencing to limit the potential All stockpiles will be hydroseeded again in the nextfor soil mobilization and offsite two weeks as the weather conditions should be idealconveyance, then. The perimeter of the site is lined with silt fence

to prevent any offsite conveyance.The use of uncured cement near All work was carried out under the supervision of Agreed with thethe top of the bank of Katzie Cascade Environmental. All Standards and Best response.Slough is a high risk practice that Practices for Instream Works were adhered to. Therecould be deleterious to the will be no more use of uncured cement in this areaadjacent watercourse. Concrete,cement, mortars, grouts and otherPortland cement or limecontaining construction materialsare alkaline materials. They arehighly toxic to fish and must onlybe used near water with extremecare. (BC MoE, 2004). Adherenceto Standards and Best Practicesfor Instream Works should beadhered to if uncured concrete isto be used near a watercourse.Address deficiencies such as Silt fencing has been fixed and is being inspected Agreed with thecollapsed silt fences, undercutting, weekly as part of the Geopacifics weekly monitoring response. Maintainetc. to prevent further offsite plan. documentation.migration of imported fill.Increase monitoring frequency ofsilt fences and ESC measuresalong the perimeter of the site.Maintain silt fence as required This will be monitored weekly as part of Geopacific’s Agreed with theincluding removal of accumulated monitoring plan. Silt will be removed if it reaches response. Maintainsediment against upslope side 50% of the height of the fence. documentation.when accumulation reaches 50%of the height of the fence.General recommendations Geo pacific will be monitoring current ESC measuresregarding ESC measures at 19265 at 19451 weekly along with the ESC measures atAirport Way are also applicable to 19265 Airport Way.19451 Sutton Avenue.An ESC plan for 19451 Sutton An ESC plan from Geopacific will be implemented Agreed with theAvenue should be developed and and adhered to. Design prepared by mid-April, response. Maintainadhered to. installation to follow end of April. documentation.

Dillon Consulting Limited Dillon Project # 16-3051 Page 3

- 57 -

Response to Comments19265 Airport Way and 19541 Sutton Avenue April 14, 2016

The following cost estimate for groundwater quality investigation is provided for planning purposes if theCity decides to implement a groundwater quality monitoring program at these sites as discussed duringthe Council Meeting on April 12, 2016.

Work Scope for Groundwater Monitoring Well Installation and reporting:• Install four groundwater monitoring wells at each site (one upgradient, one on site and two down-

gradient) to evaluate the groundwater quality.• Collect soil samples (2 from each well) from the borehole installed onsite (One borehole per site)• Collect groundwater samples from each monitoring well• Analyze soil and groundwater samples for benzene, toluene, ethylbenzene, and xylene (BTEX),

metals and polycyclic aromatic hydrocarbons• Provide a report with details of the field program and findings of the sampling program

We estimate a cost of $35,000 for the work program provided above.

Constraints and notes:• The above estimate is for mobilization of an augur drill rig for a day to install eight monitoring

wells.• We assumed groundwater depth of 6 to 8 feet at the site• We understand that concrete rubble was brought onsite as fill material. Therefore, onsite drilling

may be difficult with an augur rig. In such situations Dillon recommends skipping the onsite wellinstallation and conduct groundwater quality investigation based on the background anddowngradient wells.

Dillon Consulting Limited Dillon Project # 1 6-3051 Page 4

- 58 -