F Flint Water Crisis Public Archive

Daryl Gotham

Environmental Engineer at DEQ, Office of Drinking Water and Municipal Assistance / DEQ

16

Emails

Jan 2014–Oct 2015

Archive range

16 emails found.

KWA info.

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Daryl, Can you email me a copy of the Act 399 permit for the KWA — Contract S-4000 (Intake) and S- 4001 (LPS)? | am putting together some basic info. together for tomorrow’s visit from Liane and Richard....thanks! Michael Prysby, P.E. District Engineer Office of Drinking Water and Municipal Assistance 517 290-8817 xxxEND_PAGE:deq11_b182_0974_0974_1

RE: Contract S-4002 100% and S-4003 90% Submttals - MDEQ comments

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That sourds great. Yes | was informed of the testing methodology yesterday. | discussed this with American yesterday and | believe we are doing the magnetic particle testing. Once this is verified | will let you know and send the revised spec, These will either be in the addendum or on the original spec if we get it out prior te bidding. One way or another it will get placed in the spec. 1 xxxEND_PAGE:deq25_b124_1164_1166_1 As for the surge. Yes i spoke to the PM team yesterday and they are in the process of responding. | do not see any problerns with providing a quick response.

RE: Contract S-4002 100% and S-4003 90% Submttals - MDEQ comments

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Matt, We do not have an objection with KWA wanting to use the more conservative leakage formula for the pipeline as opposed to the formula provided in AWWA C-604. We are also not opposed to the exclusion of the welded joints in the formula; however, since this results in a much lower leakage tolerance... all welded joints need to be properly tested. The specification should clearly state an acceptable testing methodology such as radiography, sonograms, or magnetic particle testing. Finally, it is our understanding that we will be receiving a response from Genesee County concerning our questions/comments from the updated surge analysis. Michael Prysby, PLE. District Engineer Office of Drinking Water and Municipal Assistance 517 290-8817 Sent: Tuesday, June 24, 2014 6:05 PM

RE: Contract S-4002 100% and S-4003 90% Submttals - MDEQ comments

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i would like to revisit the conversation this morning regarding the pressure test. The new leakage method based on AWA GIM-11 the 66” nipe would allow 55 gal/mile leakage ina 2 hour pariod. The current specified method in section a2315 would allow roughly 0.2 gal/mile leakage ina 2 hour period depending on the pressure [150 to 350 psi) and the(} number of juints b ger mile to £2 per mile (welded isints do not count so only the valves count on the 66” fine, but if you count the hydrants, and air release valves, which are not normally courted, it could be 6-12 par mile depending on the section}, Note that you would have to have about 165 joints per mile {an average of 1 joint every 32 feet) @ 350 psi te equal the 55 gal per 2 hours allowed bry the new formula. For 150 psi, it would have to have the equivalent of 252 joints per mile to get the 55 gal leakage in 2 hours that is alowed by the new method. The current specification indleates to test ai the pressure equal to the pressure ciass listed on the drawings, where the new version would say test at no more than 125% of the working pressured. The working pressure is not defined anywhere so is that the pressure class of the roe, or the oressure within the pioe that is expected during operation? The 60” would be somewhat similar to the 66°, except the pressures would be lower on the 60" pipe. With that being sald will the MDEQ allow the current specifications to remain or do we need te still reference AWWA 604-41 for testing even though the allowable leakage is well above what we are allowing.

Contract S-4002 100% and S-4003 90% Submittals - MDEQ comments

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We've completed the review of both projects and the only significant issues that resulted were the Leakage Test forrnufas that Mike Pryshy identified in his review of S-4005. When the corrected specs are received, | arn prepared to issue the perrnit for $-4007. ffl have them by early afternoon on Monday, June 23%, Lean bring the permitted plans and specifications to the June 24° meeting. Vn willing to replace the corrected section of the spec inte the previgusly submitted specs if that is easier. Emailing them to me would be fine. Thanks, Daryl J. Gotham, FE. Michigan Denartrnent of Environmental Quality Office of Drinking Water & Municipal Assistance Saginaw-Gay District Office 401 Ketchum Street, Suite 5 Bay Gity, ME 48708 989-420-8146 (Phone) 989-891-9213 (Fax} xxxEND_PAGE:deq25_b161_1514_1515_2

RE: S-4004 MDEO comments

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Dard, | don't know Nyou received my response an the 25" but l want to make sure Vou are aware that | ari taking care of your concerns. On the 25’? laweote that we will Incormorate the drawing modifications into an addendum. Once the addendum is distributed we willce the MOEO. ‘This should address jrenis 2 and 3. Dadi ete PDF of the final POR and provide @ hand cony and tigital coy for your use.

S-4004 MDEQ comments

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Matt, Based on our review, the following isaues remairy a) The Engineers response to our comment #3 indicated that the PDA had been corrected, However, we did nol receive an updated copy of the POR, and thus have no way te confi thet ib was corrected, 2) The Engineers response to aur coranient #6 indicates that the septic tank wes tn be relocated per aur request, The plans that we received show na change in the location of the septic tank, 3) The detail of the tunk overflow was added buck to Sheet P19, however It contains twa dimensions on the overflow weir cone that are listed ac "as req'd”, This iscue is the same as that for the sizing of the tank, MDEC canned issue a permit for “as reas”. Please note thet | will be oul of the office next week and will return on Agri 7). Thanks, Dard J Gotham PE. Michigan Demernaent of Environmental Quality Olice of banking Wailer & Municipal Assistance Saninaw-Bay Distict Ohics 404 Kelchuin Street, Suse b Bay City Bl 48708 BEO-4250.98 146 (Phone) BEU-BAT-821 8 (Fae ee Sent: Monday, March 24, 2014 6:28 AM

S-4004 Intermediate Pump Station 100% review MDEQ Comments

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Attached are the MDEQ review cornments for Contract S-4(4}4. Please forward thern to anyborly that | may have left off the distribution list. See you tornorrow. Daryl J. Gotham, PE. Michigan Depariment of Environmental Quality Office of Drinking Water & Municipal Assistance Saginaw-Bay Disirict Office 401 Keichum Sireei, Sulle B Bay Clty, ME 48708 989-450-8148 (Phone) 989-801-9213 Fax} xxxEND_PAGE:deq11_b411_1884_1884_1

KWA 60% review comments

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Daryl, Attached are LDO’s review comments for Contracts S-4002 and S-4005 for our meeting tomorrow. Our comments to S-4002 are provided for Saginaw Bay Dist to include in their final punchlist. Please provide us with any of your comments for S-4005 and we will prepare a final punchlist for S-4005. | will also be in the office today all day and can discuss our comments in more detail. Michael Prysby, P.E. District Engineer Office of Drinking Water and Municipal Assistance 517 290-8817 xxxEND_PAGE:deq11_b408_1880_1880_1

LHPS, IPS, Flint Transmission main - MDEQ comments

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Attached are MDEQ’s comments for the LHPS & IPS — 90% design for tomorrow’s meeting Also attached are MDEQ’s comments for the Flint Transmission main S-4007 — 60% design for tomorrow's meeting Given Saginaw Bay schedule, it would be best, if possible, to cover the pump station comments first followed by the Flint transmission main comments. See you all at 8:30am. Michael Prysby, P.E. District Engineer Office of Drinking Water and Municipal Assistance 517 290-8817 xxxEND_PAGE:deq11_b398_1839_1839_1

LHI - 90% P.S. - MDEQ comments

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Attached are draft comments for the 90% submittal (IPS and LHPS) based upon our review and subsequent discussion. Feel free, as needed, to edit and/or provide any additional comments. As we discussed, | will contact Jon and Daryl tomorrow at 10am to further discuss our review comments pertaining to the LHPS. Following our discussion and receipt of any additional comments, | will prepare a final punch list for our meeting on Thurs. | will also forward a copy of the punch-list to Genesee County prior to COB tomorrow. | also attached my comments pertaining to the 60% submittal (S-4007 -Flint pipeline) if there is an opportunity for further review of this portion of the project. Michael Prysby, P.E. District Engineer Office of Drinking Water and Municipal Assistance 517 290-8817 xxxEND_PAGE:deq25_b213_3352_3352_1