HomeMy WebLinkAboutFwd_ EXTERNAL_ BMPs_Erosion Control Canyon Loop trail Improvement ProjectCAUTION: This message originated outside of our City of Diamond Bar network.
**Please exercise caution when opening attachments or clicking links, especially from unknown senders.**
Alan,
Please reach out to Fabian below when you have a chance. I understand from our conversation that this is not likely to be until tomorrow.
Thanks!
Ryan Winkleman
Senior Biologist/Project Manager
949-533-0918
This email was sent from my phone. If you need to immediately reach me, please call the number above.
________________________________
From: Fabian P. Aoun <FAoun@DiamondBarCA.Gov>
Sent: Wednesday, November 30, 2022 2:48:19 PM
To: Winkleman, Ryan <Ryan.Winkleman@mbakerintl.com>
Cc: Ryan Wright <RWright@DiamondBarCA.Gov>; Hal Ghafari <HGhafari@DiamondBarCA.Gov>; Anthony Jordan <AJordan@DiamondBarCA.Gov>
Subject: RE: EXTERNAL: BMPs/Erosion Control Canyon Loop trail Improvement Project
No worries at all, I will be available at that time.
Thanks!
Fabian P. Aoun, P.E. | Associate Engineer
909.839.7038 | faoun@diamondbarca.gov <mailto:faoun@diamondbarca.gov>
From: Winkleman, Ryan <Ryan.Winkleman@mbakerintl.com>
Sent: Wednesday, November 30, 2022 2:44 PM
To: Fabian P. Aoun <FAoun@DiamondBarCA.Gov>
Cc: Ryan Wright <RWright@DiamondBarCA.Gov>; Hal Ghafari <HGhafari@DiamondBarCA.Gov>; Anthony Jordan <AJordan@DiamondBarCA.Gov>
Subject: RE: EXTERNAL: BMPs/Erosion Control Canyon Loop trail Improvement Project
CAUTION: This message originated outside of our City of Diamond Bar network.
**Please exercise caution when opening attachments or clicking links, especially from unknown senders.**
Hi Fabian,
I’m sorry, you called right around the same time as somebody else and I didn’t see your voicemail. I just listened to it. I’m about to leave to pick up my son from school but I can call
you in about an hour or so.
Ryan Winkleman | Project Manager/Senior Biologist/Certified Senior Ecologist
5 Hutton Centre Drive, Suite 500 | Santa Ana, CA 92707 | [O] 949-330-4115 | [M] (949) 533-0918
ryan.winkleman@mbakerintl.com | www.mbakerintl.com <https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flinkprotect.cudasvc.com%2Furl%3Fa%3Dhttps%253a%252f%252fwww.mbakerintl.com%252f%2
6c%3DE%2C1%2CfXAfNOC376humaYGvra9bxEHEq38GEYqbfrn8V1t-uIryBMz3gCnDt1Q20bQkIUx86CknsVFBXfQALk7Oqt2rmSirm63xOOC4TCww3GQ%26typo%3D1&data=05%7C01%7CRyan.Winkleman%40mbakerintl.com%7C40301c22d7a9444d2b100
8dad324fb7f%7C4e1ee3db4df64142b7b9bec15f171ca4%7C0%7C0%7C638054453048640332%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Rwog7Xq5HT
PGM%2BKv8p68Y3jW%2F2uTenI6RU9k1i2UswM%3D&reserved=0>
From: Fabian P. Aoun <FAoun@DiamondBarCA.Gov>
Sent: Wednesday, November 30, 2022 2:42 PM
To: Winkleman, Ryan <Ryan.Winkleman@mbakerintl.com>
Cc: Ryan Wright <RWright@DiamondBarCA.Gov>; Hal Ghafari <HGhafari@DiamondBarCA.Gov>; Anthony Jordan <AJordan@DiamondBarCA.Gov>
Subject: RE: EXTERNAL: BMPs/Erosion Control Canyon Loop trail Improvement Project
Hi Ryan,
I left you a message earlier regarding the email chain below. could you give me a call when you get the chance? I will be out of town starting tomorrow 12/1 and will return on 12/7.
We can touch base next week if we are unable to chat today.
Fabian P. Aoun, P.E. | Associate Engineer
909.839.7038 | faoun@diamondbarca.gov <mailto:faoun@diamondbarca.gov>
From: Anthony Jordan
Sent: Tuesday, November 29, 2022 8:09 AM
To: 'Winkleman, Ryan' <Ryan.Winkleman@mbakerintl.com <mailto:Ryan.Winkleman@mbakerintl.com> >
Cc: Greg Gubman (GGubman@DiamondBarCA.Gov <mailto:GGubman@DiamondBarCA.Gov> ) <GGubman@DiamondBarCA.Gov <mailto:GGubman@DiamondBarCA.Gov> >; Ryan Wright <RWright@DiamondBarCA.Gov <mailto:RWright@Diam
ondBarCA.Gov> >
Subject: RE: EXTERNAL: BMPs/Erosion Control Canyon Loop trail Improvement Project
Ryan,
At the start of the project, some BMPs were installed. These consisted mostly of a gravel bed at the trail entrance (maintenance easement which is being used for project access), to
prevent tracking soil onto the street and into the storm drain system. Additionally, the contractor placed drip pans beneath stationary equipment to contain drips/fluid loss.
Regarding erosion, most if not all of the erosion noted along the trail would have taken place anyway with or without the project. Historically, we deal with these eroded areas a few
times per year after significant rain events. As Dick Fisher stated in an earlier email response, part of the design/improvements are to help reduce if not eliminate trail erosion.
I will discuss this with the contractor and determine what can be done within reason to prevent or reduce this while the project is ongoing. To be fair, it is not reasonable to expect
the contractor to be able to completely prevent this but I will ask that he puts forth a concerted effort.
As we are all aware, one of the main purposes of the BMPs is to prevent sediments and pollutants from entering the storm drains. Given the proximity of the project to any storm drain
elements, there is likely no concern that runoff from the site could potentially impact any storm drains. That being said, as you mentioned below, the side casted material and its impact
on the adjacent vegetation is most likely the focus of this concern. BMPs had not been placed by these material stockpiles at the time of the rain to my knowledge nor am I aware of
any appreciable runoff there. I will be on site today to review and discuss the plan moving forward to mitigate migration of the material into the adjacent vegetation.
Regards,
Anthony Jordan | Maintenance Superintendent City of Diamond Bar | Public Works
909.839.7063
From: Winkleman, Ryan <Ryan.Winkleman@mbakerintl.com <mailto:Ryan.Winkleman@mbakerintl.com> >
Sent: Monday, November 28, 2022 5:26 PM
To: Anthony Jordan <AJordan@DiamondBarCA.Gov <mailto:AJordan@DiamondBarCA.Gov> >
Cc: Ryan Wright <RWright@DiamondBarCA.Gov <mailto:RWright@DiamondBarCA.Gov> >; Richard Fisher <rfisher@rfaland.com <mailto:rfisher@rfaland.com> >
Subject: RE: EXTERNAL: BMPs/Erosion Control Canyon Loop trail Improvement Project
CAUTION: This message originated outside of our City of Diamond Bar network.
**Please exercise caution when opening attachments or clicking links, especially from unknown senders.**
Thank you, Anthony. Would you agree then from your email below that Danny did not implement BMPs previously, if there was significant erosion following previous rain events? I can respond
to FWS that the contractor did not install BMPs previously but will install them prior to the next rain event later this week, I just want to make sure that what I say is accurate and
that you’re in agreement since I’m putting it in writing. I assume the BMPs will include silt fencing, wattles, and other methods to contain soil and/or prevent large rills or erosional
features from developing. Looking at the photos that have been sent to the City and to the agencies, I think the concerns that they’re voicing are that sediment has just been sidecast
into areas that are otherwise supposed to be untouched. I don’t know how to resolve that short of pulling it all back very carefully at the end of the project, but they can at least
attempt to prevent it from going in deeper into the vegetation from rainfall, particularly the larger mounds that have been built up.
Ryan Winkleman | Project Manager/Senior Biologist/Certified Senior Ecologist
5 Hutton Centre Drive, Suite 500 | Santa Ana, CA 92707 | [O] 949-330-4115 | [M] (949) 533-0918
ryan.winkleman@mbakerintl.com <mailto:ryan.winkleman@mbakerintl.com> | www.mbakerintl.com <https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flinkprotect.cudasvc.com%2Furl%3Fa%3Dhttps
%253a%252f%252fwww.mbakerintl.com%252f%26c%3DE%2C1%2C7NFgE16U9f1rZTms44qc9VUT2oGRsfhTOuAchY39J8pbh4R2R0TNK3C7bDVgYKFQmKhUngHvg3Oa_h6cFph_KOms7SQpXM5EaHM9gfrL5-lOamginzwq1Ao%2C%26typo%3D1&data=05%7C01
%7CRyan.Winkleman%40mbakerintl.com%7C40301c22d7a9444d2b1008dad324fb7f%7C4e1ee3db4df64142b7b9bec15f171ca4%7C0%7C0%7C638054453048640332%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBT
iI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=OHLLcC8hwu47WfIP8qHpk0DMOjm8bUNx4Ul0nCXhuRg%3D&reserved=0>
From: Anthony Jordan <AJordan@DiamondBarCA.Gov <mailto:AJordan@DiamondBarCA.Gov> >
Sent: Monday, November 28, 2022 4:19 PM
To: Danny Daher <acecd99@gmail.com <mailto:acecd99@gmail.com> >
Cc: Ryan Wright <RWright@DiamondBarCA.Gov <mailto:RWright@DiamondBarCA.Gov> >; Richard Fisher <rfisher@rfaland.com <mailto:rfisher@rfaland.com> >; Ashimine, Alan <aashimine@mbakerintl.com
<mailto:aashimine@mbakerintl.com> >; Winkleman, Ryan <Ryan.Winkleman@mbakerintl.com <mailto:Ryan.Winkleman@mbakerintl.com> >; Ryan McLean <RMcLean@DiamondBarCA.Gov <mailto:RMcLean@DiamondBarCA.Gov>
>
Subject: EXTERNAL: BMPs/Erosion Control Canyon Loop trail Improvement Project
Good afternoon Danny,
Per the approved plans, specifications and special provisions of the subject project, eroded sediments shall be retained on site. During the most recent rain event on the trail, several
areas experienced significant erosion. As such, please install erosion control measures as required to prevent any further erosion prior to the next rain event. Please reach out to
me with any questions or concerns. If you would prefer, I am happy to meet with you on site to discuss.
Regards,
<https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.diamondbarca.gov%2F&data=05%7C01%7CRyan.Winkleman%40mbakerintl.com%7C40301c22d7a9444d2b1008dad324fb7f%7C4e1ee3db4df64142b7b9bec1
5f171ca4%7C0%7C0%7C638054453048640332%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=xVh9rL%2BNtsljw%2FzfNtGX%2Fy3w17hPt67m5m6JetYcNA
s%3D&reserved=0>
Anthony Jordan Maintenance Superintendent
City of Diamond Bar | Public Works Department
21810 Copley Drive, Diamond Bar, CA 91765
t 909.839.7063 | 909.839.7000 main | f 909.861.3117
ajordan@diamondbarca.gov <mailto:ajordan@diamondbarca.gov> | www.DiamondBarCA.gov <https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.diamondbarca.gov%2F&data=05%7C01%7CRyan.Winkle
man%40mbakerintl.com%7C40301c22d7a9444d2b1008dad324fb7f%7C4e1ee3db4df64142b7b9bec15f171ca4%7C0%7C0%7C638054453048640332%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJ
XVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=xVh9rL%2BNtsljw%2FzfNtGX%2Fy3w17hPt67m5m6JetYcNAs%3D&reserved=0>
Connect with Us... Facebook <https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.facebook.com%2Fcityofdiamondbarca&data=05%7C01%7CRyan.Winkleman%40mbakerintl.com%7C40301c22d7a9444d2b
1008dad324fb7f%7C4e1ee3db4df64142b7b9bec15f171ca4%7C0%7C0%7C638054453048640332%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=DLiJf%2
BXQ59LwNG95P%2BseGJ0Iglw7%2F7CRdnU0OwgcGc0%3D&reserved=0> |Twitter <https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.twitter.com%2Fdiamondbarcity&data=05%7C01%7CRyan.Winkleman%40m
bakerintl.com%7C40301c22d7a9444d2b1008dad324fb7f%7C4e1ee3db4df64142b7b9bec15f171ca4%7C0%7C0%7C638054453048640332%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn
0%3D%7C3000%7C%7C%7C&sdata=YsJxBK%2BR7MP0bw%2FfbwEYTVcwIJhJr9s8KGXdAk3SI4I%3D&reserved=0> |YouTube <https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.youtube.com%2Fdiamondbarca&dat
a=05%7C01%7CRyan.Winkleman%40mbakerintl.com%7C40301c22d7a9444d2b1008dad324fb7f%7C4e1ee3db4df64142b7b9bec15f171ca4%7C0%7C0%7C638054453048640332%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2lu
MzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=UJPc7ULQ2oeCTFYmXQRRNHfaS%2BTqbqP6eMfU4ten1nw%3D&reserved=0> |Instagram <https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.
instagram.com%2Fcityofdiamondbar&data=05%7C01%7CRyan.Winkleman%40mbakerintl.com%7C40301c22d7a9444d2b1008dad324fb7f%7C4e1ee3db4df64142b7b9bec15f171ca4%7C0%7C0%7C638054453048640332%7CUnknown%7CTWFpbGZs
b3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=nTsojIFcY3ZDKMVZiAzQrHNuZ06bxXFHZfq%2FSmlM0N0%3D&reserved=0>
�礗ੲ郑⽯�ꀘ䂷랠䪀憵㹿㼯䀿湏휏⩟去뜏咗敵ᕳ탯仰浥酢킸㈠ᠹ㋰弰�㠠为ᣠ䶠⿱咈ꃑ濷➦﹗欰삵ᢩ勡뽹⟐翩턦봐硫︼箏耯ڦ⺲܆䀲탺歡톸䂷맽洠⽿㶀꼋묌龂菿ႪಏҺ躯酏츟礼ࡧ㸺鿼꿽；쿿çǟ탯䍑ͣя䪗筇柰邷扵愆阠
箿䟍萦䑀⑽䋢ꃕ䅃뜮纠ฏｿ踏༩ᘪ漒ꪃ鼭ᔪ៷ᤏ⤸鼉Ἀ缴鼧ⷿ⤿⪿⯏ⳟ㯯⽟』？뼿㼲伳弸８༚Ἓꉆ㯲ꌆ圠솇漷䛿㥯ႏ䬥䌴㱟㵿ྏﾞ佐꽀뽁ᄔ�ངὅ⽆䟿䠿䥏孟᷏ḟἯ‿읏弡ῶ逦敪Ə裮䕒›塅ᅔむ䅎橌䉀偍珸䔯䃬낖ꃧ倣ᆶ荀䎠킿歹䲡൯რ氠耀浉䃬뇺ㆷ倠䃬㉧运퇿튟펯풿拏홟겯ｏ徭潛佶彷潸罹轺ῦ紿컟콿溏澿烏ｲ待ή佾彿澀羁ᏽⲫﾅ྇ᾈ⾉㾊例賿赟蹯轿邏鞟菿蒏ﾟ龞従澔羕辖龗꾘뾙驯鯏鳟鷯䇽䃢삷膵䃢ꁯ껀浂溑콢逆€
眠킸悮叧걒떀擀冷껰롐�肫ガ聫邵䂱倠뗠邶튮뀊浧蘒䊰蘒㷠胠깡洤뜔洱渠뵣悮ဨ뜑띀따攃낫淵矔톷끨냀褐甠삸胠걦꽐덆瘐땣ꬠ⧀逆à䆯냺Ůᅭ正抷€䅭毯맡깐♄敀醸Q솰뫿곷捑ꨏꀢ≗벹址끖熵僞뉹洱悱﵁ꇡ歴놑﨑깡녂맡뿲놼䂯ꂫ₵胠끖ꭩｰႪ恓ꆳ膮돁狢胯煥썵淐맣罁鋂닀닃に⁓ꃅ胠塞火쾡�ﾤྦꟿꠟ꤯ꭏ걟쵯齏｟澠꿈뿉쿊�ￍ쿿퀏턟툯鄿♞�匰ａ怦퀌獫逆芲산ზ郡룿놑긠댂쟂랐�⢴潷၂킳덨꽡케넌끫䏃솻睹僺炰
쇿뚠쏰껰꼤녕﹠뉈뚠쇐냴쎀뚠＠쇧틩䆮놱Ǥꃬ톳䀦대昑睥¯浩㗠悰並秱₶胟晡닧�殀枀滱！ꏀ鎹샇®悰䁕₺ﾼ뻷�삯䘥₲傮ǰ닿왑⚡抁切۱浑䀦惕٥�깡ﶠ⋰淠끑욡긡⛀摀땵勥뾰ၢ凶嚴摫悱懥聼捳ꂷ悰惪ᆷ싶뮊ﳡ깑뙠ﾰ釰ꆳꃃ胡퇩ꇆ欢릡썉﹅뚤뇀Ｐય⿲㿳俴◀ᆷǧ邺랯녰륡Ő暡ね꽲쿀ꃁʷዥ鐂扡툄傹旼렰슁왝ġ뿖ℒ䃃脀솲瞹닾ﮑ뗽á꽫댁꿱낐｠ꇄ:₵僚冲䀺ᇿ쟒ۜޏ힟���ﾯ
뿛꼕�ῢ뼛헿혏ᘟᜏᨿﾏ漜缝輞鼟꼠袭抰珺慒胩삯抵ᇽ牱ჸ낱愉㎰ᆷ맿띉뭃널ꇰ넑恫둭²랠뱢睧ꇃ釆臱籇꿁砕ﳽ瑁펲㊹慬騸ᇼ숔뀳낢扠늰⿁䔒숹畲ꀯ猷ᑯ⩿삿긥셃놠＂ჸꆵ냁탤聭�놁뎀럱獄ね꽤﯀䇮聬뉵䑰Dz돡돐ﶰ郇쉷欴Ơ뉑网䁘쇬펻出蕅툂冮�橤懃Ů쁭뭧쒠ʷ鏤ᔾ䊮凾풮ᆷ㻿놵끠덀댒뿆ᅉꍎ놱Ꝋꆼ₺Ѱﻁ䁳䄿䉏쁟댥껡ꯖꏀ⇆뉭毐ꀯ녷Ｑ䁍ǥꇯ뀷냽匲懴륰捱⁅蔿
茽Ɨ殡䒡옓搠釩⇆맿°︳꼷⼱欀ﾰ郤끞熷愲킳ꇁﲀﲑ덐䵁㎃䨇볅７齌燽콓�켥�⣿⫿⬏Ⱏ⸿⽏たｯ伢弣漤彨潩罪轫齬盏滟澿矏㥨砶︰︠牶糿翯煏爯脿､儽㽷佸役潺罻轼齽苿莟蒯薿跏瑯痏铟／쾈�ﾋྍᾎ⾏㾐醿鉏굟옮㭰䫱삡帣粰䴠禵畓딱Π䎁蔺⁚ꆛ뎠䋐醟炤畐쁛⃰ꅗ毀뱓ᾙ髿鬯鰿鵏鹟齯ꁿꆏ膟粓〹⸹㌸킴㟰㘰꠳ꥯꩿꮏ龟꾬뾭쾮�〱憶⿾⢹澂쾽쾱�输铿閟얯뙟뜏렟뤯먿ｏ徻澼迁侀뿄쿀࿑ᛒ礡聙ꃃꑢ㪠쐫㈀
㯐ӗభ瀠䜺ヷ၉䔣�⃢ㅀ〮瑰퐻擰㪲�㰰�羕濄鿓꿔鿂꿃鿛쿅扛奧䁆㨁䳕쯟샊꠩